- adapterized (killed trailing spaces/tabs)

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/F0 10/Times-Roman@0 SF(Crafty Command Documentation \(v)195.585 96 Q
(ersion 18\))-.15 E(-----------------------------------------------)
209.745 108 Q .714(Crafty is nothing more than a long-time hobby of min\
e, dating back to Blitz and later Cray Blitz.)72 120 R(People)5.714 E
(ask me ho)72 132 Q 2.5(wIk)-.25 G
(eep doing this, and that is the one question that generally lea)-2.6 E
-.15(ve)-.2 G 2.5(sm).15 G 2.5(ea)-2.5 G 2.5(tal)-2.5 G(oss for w)-2.5 E
(ords.)-.1 E .711(Perhaps the most common question I'm ask)72 156 R .711
(ed is "is this v)-.1 F .711(ersion of Crafty some dumbed-do)-.15 F .712
(wn v)-.25 F .712(ersion of)-.15 F 1.071
(what you play on ICC or what you use at a computer chess e)72 168 R
-.15(ve)-.25 G 3.57(nt?" The).15 F 1.07(answer is a resounding *NO*.)
3.57 F .666(The current v)72 180 R .666(ersion is *e)-.15 F .667
(xactly* what is running on ICC under this v)-.15 F .667(ersion number)
-.15 F 5.667(.N)-.55 G .667(ote that a ne)-5.667 F 3.167(wv)-.25 G(er)
-3.317 E(-)-.2 E .538
(sion can, on occasion, introduce weaknesses or outright b)72 192 R .537
(ugs that were not present in pre)-.2 F .537(vious "gold" v)-.25 F(er)
-.15 E(-)-.2 E 2.82(sions. As)72 204 R 2.82(ar)2.82 G .32
(esult, you should be careful to back up your "f)-2.82 F -.2(avo)-.1 G
.321(rite" before trying the latest and greatest.).2 F(If)5.321 E
(you aren')72 216 Q 2.5(ts)-.18 G(atis\214ed with the ne)-2.5 E 2.5(wv)
-.25 G(ersion, you can then go back to what you belie)-2.65 E .3 -.15
(ve i)-.25 H 2.5(sab).15 G(etter v)-2.5 E(ersion.)-.15 E 1.013
(If you are looking for the strongest playing computer chess program a)
72 240 R -.25(va)-.2 G 1.013(ilable, you should lik).25 F 1.013
(ely look to)-.1 F .704(Fritz, Rebel, T)72 252 R(iger)-.35 E 3.204(,a)
-.4 G .704(nd the other commercial entries.)-3.204 F .705
(There you will \214nd strong opponents with polished)5.705 F(interf)72
264 Q .102(aces that ha)-.1 F .401 -.15(ve b)-.2 H .101
(een tested in a systematic and careful w).15 F(ay)-.1 E 5.101(.I)-.65 G
2.601(fy)-5.101 G .101(ou are looking for a program that plays)-2.601 F
.614(good chess, has a reasonable set of features for you to use, is a)
72 276 R -.25(va)-.2 G .614(ilable in source form, and one where the).25
F .478(author welcomes feedback, code or suggestions, then you are at t\
he right place.)72 288 R 2.978(Iw)5.478 G .478(elcome comments and)
-2.978 F(suggestions, and also feedback from ideas you try yourself tha\
t seem to w)72 300 Q(ork.)-.1 E .031(Crafty is a state-of-the-art compu\
ter chess program, and uses all of the search algorithms you ha)72 324 R
.332 -.15(ve p)-.2 H(robably).15 E 1.016(read about, ne)72 336 R -.05
(ga)-.15 G 1.016(scout search, killer/history mo).05 F 1.315 -.15(ve o)
-.15 H 1.015(rdering, SEE \(Static Exchange Ev).15 F 1.015
(aluation\) quiescence)-.25 F(mo)72 348 Q 1.776 -.15(ve o)-.15 H 1.477(\
rdering and pruning, hash \(transposition/refutation\) tables as well a\
s e).15 F -.25(va)-.25 G 1.477(luation caches, selecti).25 F -.15(ve)
-.25 G -.15(ex)72 360 S .538(tensions, recursi).15 F .837 -.15(ve n)-.25
H(ull-mo).15 E .837 -.15(ve s)-.15 H .537
(earch, and a host of other features that ha).15 F .837 -.15(ve b)-.2 H
.537(een used and are still being).15 F .836
(used in most computer chess programs.)72 372 R .836(If it')5.836 F
3.336(sn)-.55 G .836(ot in Crafty)-3.336 F 3.336(,e)-.65 G .837
(ither it is on the "to do" list, or it has been)-3.336 F
(tried, found w)72 384 Q(anting, and discarded.)-.1 E 1.288(Chess Kno)72
408 R 1.288(wledge is gro)-.25 F 1.288(wing, and suggestions \(or e)-.25
F -.15(ve)-.25 G 3.788(nb).15 G(etter)-3.788 E 3.787(,r)-.4 G 1.287
(eal code\) are welcome.)-3.787 F 1.287(This is the best)6.287 F .661
(place to contrib)72 420 R .661(ute your ideas, because kno)-.2 F .662
(wledge can be used to supplant search and mak)-.25 F 3.162(ei)-.1 G
3.162(tp)-3.162 G .662(lay better)-3.162 F(.)-.55 E .021(The e)72 432 R
-.25(va)-.25 G .021(luation is probably the easiest place to start stud\
ying Crafty because of the comments and simplicity).25 F
(of using bitmaps, *once* you get "into" them.)72 444 Q .241
(My purpose for doing this is an e)72 468 R -.15(xe)-.15 G .242
(rcise in computer chess ef).15 F(\214cienc)-.25 E 4.042 -.65(y. I)-.15
H(can')3.392 E 2.742(tb)-.18 G -.15(eg)-2.742 G .242
(in to count the number of).15 F .156(people I kno)72 480 R 2.656(wt)
-.25 G .155(hat started from scratch to write a chess program.)-2.656 F
(Ev)5.155 E .155(en lar)-.15 F .155(ger is the group that started from)
-.18 F(scratch, and g)72 492 Q -2.25 -.2(av e)-.05 H
(up before \214nishing, because of the basic size of the project.)2.7 E
.83(Crafty of)72 516 R .83(fers e)-.25 F -.15(ve)-.25 G .83(ryone a v)
.15 F .83(ery clean starting point, if you are f)-.15 F .83
(ascinated by the bitmap chess board imple-)-.1 F
(mentation \(as I am\).)72 528 Q
(The search and quiescence code is reasonably straightforw)5 E
(ard, as is the e)-.1 E -.25(va)-.25 G(luation,).25 E .118(It of)72 552
R .117(fers a great starting point, so that if you are interested in tr\
ying a ne)-.25 F 2.617(ws)-.25 G .117(earch e)-2.617 F .117
(xtension, you can be test-)-.15 F .009(ing tomorro)72 564 R 1.309 -.65
(w, r)-.25 H .009(ather than ne).65 F .009(xt year)-.15 F 2.509(,b)-.4 G
.01(ecause you start with a fully functional chess engine that is not a\
 "to)-2.509 F(y")-.1 E .613(application, b)72 576 R .613
(ut is a functional and "dangerous" chess player)-.2 F 5.612(.I)-.55 G
3.112(to)-5.612 G -.25(ff)-3.112 G .612
(ers a rapid start, although you can cer).25 F(-)-.2 E .75
(tainly replace it piece by piece until it is "yours" if you w)72 588 R
3.25(ant. It)-.1 F .75(also of)3.25 F .75(fers a f)-.25 F .75
(airly complete set of com-)-.1 F .958(mands and an interf)72 600 R .957
(ace for a GUI as well as support for chess serv)-.1 F .957(er play)-.15
F 3.457(,s)-.65 G 3.457(ot)-3.457 G .957(hat testing and deb)-3.457 F
(ugging)-.2 E(your ne)72 612 Q 2.5(wi)-.25 G
(deas is greatly simpli\214ed.)-2.5 E 1.244(If you')72 636 R 3.744(dl)
-.5 G(ik)-3.744 E 3.744(em)-.1 G 1.244
(ore information, please check out the read.me document and the crafty)
-3.744 F(.F)-.65 E 2.345 -.55(AQ t)-.74 H 1.245(hat are dis-).55 F(trib)
72 648 Q 1.063(uted with Crafty)-.2 F 6.063(.T)-.65 G 1.062
(hese contain recent ne)-6.063 F 1.062
(ws and speci\214c instructions for commonly ask)-.25 F 1.062
(ed questions,)-.1 F(lik)72 660 Q 2.5(e")-.1 G
(where can I obtain tablebase \214les and ho)-2.5 E 2.5(wd)-.25 G 2.5
(oIu)-2.5 G(se them?")-2.5 E(Ho)246.63 672 Q 2.5(wt)-.25 G 2.5(op)-2.5 G
(lay a g)-2.5 E(ame.)-.05 E(-------------------)256.365 684 Q 1.084
(When you e)72 696 R -.15(xe)-.15 G 1.084(cute Crafty).15 F 3.584(,y)
-.65 G 1.084(ou will immediately be greeted by the prompt string "white\
\(1\): " and Crafty)-3.584 F .79(will w)72 708 R .79(ait for commands.)
-.1 F .79(This prompt means it is white on mo)5.79 F -.15(ve)-.15 G
3.289(,a).15 G .789(nd we are at mo)-3.289 F 1.089 -.15(ve #)-.15 H
3.289(1f).15 G .789(or white.)-3.289 F -1.1(Yo)5.789 G(u)1.1 E .879
(can \214rst use an)72 720 R 3.379(yo)-.15 G 3.379(ft)-3.379 G .879
(he commands from the alphabetic command listing belo)-3.379 F 3.38(wt)
-.25 G 3.38(ot)-3.38 G .88(ailor the g)-3.38 F .88(ame to your)-.05 F EP
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/F0 10/Times-Roman@0 SF .238(liking \(time control, hash table size, bo\
ok randomness, etc.\) and then you ha)72 96 R .538 -.15(ve t)-.2 H .438
-.1(wo c).15 H 2.737(hoices. If).1 F .237(you w)2.737 F .237(ant to)-.1
F .198(play white, just enter your mo)72 108 R -.15(ve)-.15 G 2.698(,a)
.15 G .198(nd Crafty will tak)-2.698 F 2.698(ei)-.1 G 2.698(tf)-2.698 G
.198(rom there and mak)-2.698 F 2.698(eam)-.1 G .498 -.15(ove i)-2.698 H
2.698(nr).15 G 2.698(esponse. Y)-2.698 F .198(ou will)-1.1 F .902
(then be prompted by "white\(2\):" and it is your mo)72 120 R 1.202 -.15
(ve a)-.15 H -.05(ga).15 G 3.402(in. If).05 F .901(you w)3.401 F .901
(ould prefer to play black, just enter)-.1 F .745(either "mo)72 132 R
-.15(ve)-.15 G 3.245("o).15 G 3.245(r")-3.245 G .745
(go" at the prompt and crafty will mo)-3.245 F 1.045 -.15(ve f)-.15 H
.746(or that side rather than accepting a mo).15 F 1.046 -.15(ve f)-.15
H(rom).15 E 2.962(you. After)72 144 R .462(it mak)2.962 F .462
(es its mo)-.1 F .762 -.15(ve f)-.15 H .462(or white, you will then see\
 the prompt "black\(1\): " indicating it is no).15 F 2.962(wt)-.25 G
(ime)-2.962 E .682(for blacks \214rst mo)72 156 R -.15(ve)-.15 G 5.682
(.Y).15 G .682(ou can enter a mo)-6.782 F -.15(ve)-.15 G 3.182(,o).15 G
3.182(ry)-3.182 G .683(ou can once ag)-3.182 F .683(ain enter "mo)-.05 F
-.15(ve)-.15 G 3.183("o).15 G 3.183(r")-3.183 G .683
(go" and Crafty will)-3.183 F(ag)72 168 Q(ain mo)-.05 E .3 -.15(ve f)
-.15 H
(or the current side, change sides, and prompt you for what to do ne).15
E(xt.)-.15 E .669(If you \214nd yourself continually using a set of com\
mands to con\214gure crafty to play as you w)72 192 R .669(ant, you can)
-.1 F .949(put these commands in a startup \214le called .craftyrc \(Un\
ix\) or crafty)72 204 R .949(.rc \(DOS/W)-.65 F(indo)-.4 E 3.449
(ws\). The)-.25 F .949(format for)3.449 F .221(this \214le is just lik)
72 216 R 2.721(ey)-.1 G .221(ou w)-2.721 F .221
(ould type the commands at the k)-.1 F -.15(ey)-.1 G .221
(board, with the requirement that the last line of).15 F 1.069
(the \214le must be "e)72 228 R 1.069(xit" on a line by itself.)-.15 F
1.07(Using this, each time you start Crafty)6.069 F 3.57(,i)-.65 G 3.57
(tw)-3.57 G 1.07(ill \214rst e)-3.57 F -.15(xe)-.15 G 1.07(cute the).15
F(commands from this \214le before it prompts you for input.)72 240 Q
.346(While Crafty is running, you can control what it displays, b)72 264
R .345(ut here')-.2 F 2.845(sac)-.55 G .345(ouple of samples to e)-2.845
F .345(xplain what it)-.15 F(is saying and wh)72 276 Q(y:)-.05 E 5
(depth time score)99.5 300 R -.25(va)10 G(riation \(1\)).25 E(book mo)
102 312 Q -.15(ve)-.15 G 2.5(s{).15 G
(d4, c3, Nc3, d3, b3, c4, g3, b4, Be2, Bb5})-2.5 E 5(book 0.0s)102 324 R
7.5(70% d4)12.5 F(White\(3\): d4)72 348 Q(time used:)102 360 Q(0.01)7.5
E .97
(This is the normal output for those cases where Crafty is in book.)72
384 R .971(The book mo)5.971 F -.15(ve)-.15 G 3.471(sl).15 G .971
(ine gi)-3.471 F -.15(ve)-.25 G 3.471(st).15 G .971(he set of)-3.471 F
.805(book mo)72 396 R -.15(ve)-.15 G 3.305(st).15 G .805
(hat made the \214rst selection cut \(see the book selection e)-3.305 F
.805(xplanation gi)-.15 F -.15(ve)-.25 G 3.305(nl).15 G .805
(ater\), follo)-3.305 F .805(wed by)-.25 F(the mo)72 408 Q .3 -.15(ve a)
-.15 H(ctually played, in this case d4.).15 E
(If Crafty is out of book, then the output looks some)72 432 Q(what dif)
-.25 E(ferent as gi)-.25 E -.15(ve)-.25 G 2.5(nb).15 G(elo)-2.5 E(w:)
-.25 E 5(depth time score)79.5 456 R -.25(va)10 G(riation \(1\)).25 E 5
(4-> 0.81)84.5 468 R 7.5(2.09 6.)10 F(dx)2.5 E(e4 Bx)-.15 E
(e4 7. Rad8 Qf2 8. Qb5)-.15 E 12.5(51)84.5 480 S 7.5(.37 2.41 6.)-12.5 F
(dx)2.5 E(e4 Bx)-.15 E(e4 7. Ne5 Qf4 8. Bx)-.15 E(e4+ Qx)-.15 E
(e4 9. f5)-.15 E 5(5-> 1.88)84.5 492 R 7.5(2.41 6.)10 F(dx)2.5 E(e4 Bx)
-.15 E(e4 7. Ne5 Qf4 8. Bx)-.15 E(e4+ Qx)-.15 E(e4 9. f5)-.15 E 12.5(67)
84.5 504 S 12.5(.38 --)-12.5 F(6. dx)10 E(e4)-.15 E 10(61)84.5 516 S 7.5
(1.90 1.97 6.)-10 F(dx)2.5 E(e4 Bx)-.15 E
(e4 7. Rab8 Qf2 8. Qc7 Nc5 9. Qe5)-.15 E 10(61)84.5 528 S 12.5(2.92 ++)
-10 F(6. Ne5)10 E 10(61)84.5 540 S 7.5(3.71 2.23 6.)-10 F
(Ne5 Qg2 7. Ng6 h5 8. Nh4 Qg4)2.5 E 2.5(6-> 15.59)84.5 552 R 7.5
(2.23 6.)10 F(Ne5 Qg2 7. Ng6 h5 8. Nh4 Qg4)2.5 E(time: 15.60)79.5 564 Q
2.5(cpu:99% mat:1 n:246565 nps:15927)5 F -.15(ex)79.5 576 S
(t-> checks:4706 recaps:1336 pa).15 E(wns:0 1rep:301)-.15 E 2.5
(nodes full:45951 quiescence:200614 e)79.5 588 R -.25(va)-.25 G
(ls:104657).25 E(endg)79.5 600 Q(ame tablebase-> probes done: 0)-.05 E
(successful: 0)5 E(Let')72 624 Q 2.999(st)-.55 G(ak)-2.999 E 2.999(et)
-.1 G .499(his stuf)-2.999 F 2.999(fo)-.25 G .499(ne line at a time.)
-2.999 F .499(Lines that ha)5.499 F .799 -.15(ve s)-.2 H .499
(omething lik).15 F 2.999(e4)-.1 G .499
(-> in the depth column are printed)-2.999 F 1.178
(when that iteration \(depth\) is completely \214nished.)72 636 R 1.178
(The time and score columns should be ob)6.178 F 1.178(vious as to)-.15
F .816(their meaning as is the PV)72 648 R 3.316(,t)-1.29 G .816
(he sequence of mo)-3.316 F -.15(ve)-.15 G 3.316(st).15 G .817
(hat led to this score.)-3.316 F .817(One note about the "score" col-)
5.817 F 2.84(umn. As)72 660 R .34(of v)2.84 F .34
(ersion 18, Crafty displays the score with + v)-.15 F .339
(alues good for white, - v)-.25 F .339(alues good for black, no)-.25 F
.08(matter which side it is playing in the g)72 672 R 2.581(ame. All)
-.05 F .081(output no)2.581 F 2.581(wf)-.25 G(ollo)-2.581 E .081
(ws this con)-.25 F -.15(ve)-.4 G .081(ntion, from playing, to analy-)
.15 F 1.442(sis mode, to annotating your g)72 684 R 1.441
(ames, to whispering/kibitzing on the chess serv)-.05 F 1.441
(ers, and so forth.)-.15 F 1.441(This is)6.441 F(unlik)72 696 Q 3.26(eo)
-.1 G .76(ther engines, b)-3.26 F .76(ut once you get used to it, it is\
 much less confusing when you remember that ne)-.2 F(g-)-.15 E(ati)72
708 Q .3 -.15(ve s)-.25 H
(cores are good for black and bad for white, and vice-v).15 E(ersa.)-.15
E EP
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/F0 10/Times-Roman@0 SF .825(the line that has -- in the score column m\
eans that when we started depth 6, dx)72 96 R .824
(e4 turned out to be w)-.15 F(orse)-.1 E 1.771(than we thought \(notice\
 score dropped from 2.411 last search to 1.972 for this mo)72 108 R
2.072 -.15(ve t)-.15 H 1.772(his search.\)).15 F -.8(To)6.772 G(resolv)
72 120 Q 2.942(et)-.15 G .442(his, Crafty lo)-2.942 F .441(wers the lo)
-.25 F .441(wer search bound \(alpha\) and re-searches the mo)-.25 F
.741 -.15(ve t)-.15 H 2.941<6f8c>.15 G .441(nd the score.)-2.941 F(The)
5.441 E 1.33(line with ++ means that this mo)72 132 R 1.63 -.15(ve \()
-.15 H 1.33(Ne5\) is better than the best mo).15 F 1.63 -.15(ve s)-.15 H
3.83(of).15 G(ar)-3.93 E 3.83(,s)-.4 G 3.83(oC)-3.83 G 1.33
(rafty raises the upper)-3.83 F
(search bound \(beta\) and re-searches this mo)72 144 Q .3 -.15(ve t)
-.15 H 2.5<6f8c>.15 G(nd the ne)-2.5 E 2.5(ws)-.25 G(core.)-2.5 E .544
(the \214rst line of statistics gi)72 168 R -.15(ve)-.25 G 3.044(st).15
G .544(he total time tak)-3.044 F .543
(en for this search, the cpu percentage which should stay at)-.1 F
(98-100% unless your machine is hea)72 180 Q
(vily loaded or unless Crafty is in an endg)-.2 E(ame that is ha)-.05 E
(ving lots of con-)-.2 E .67(tact with endg)72 192 R .67(ame databases.)
-.05 F .67(If this drops belo)5.67 F 3.17(w9)-.25 G .67
(8%, it means that Crafty is not getting full CPU usage)-3.17 F .682
(and will be playing weak)72 204 R .682(er than normal.)-.1 F .683
(The mat:1 is simply the true material score, since Crafty')5.682 F
3.183(sp)-.55 G(osi-)-3.183 E(tional scores are often lar)72 216 Q
(ger than a pa)-.18 E(wn.)-.15 E(Alphabetic Listing of Commands)221.195
240 Q(------------------------------)238.05 252 Q 3.19(1. alarm)72 276 R
(on|of)3.19 E 5.69(fT)-.25 G .69(his command is used to control Crafty')
-5.69 F 3.189(s")-.55 G .689(beep" after it mak)-3.189 F .689(es a mo)
-.1 F -.15(ve)-.15 G 5.689(.T).15 G .689(urning this of)-6.139 F(f)-.25
E .094(will mak)72 288 R 2.594(eC)-.1 G .094
(rafty "quiet" when it plays, b)-2.594 F .094(ut also mak)-.2 F .095
(es it easy to miss a mo)-.1 F .395 -.15(ve i)-.15 H 2.595(fy).15 G .095
(ou are using crafty to play)-2.595 F(in a tournament.)72 300 Q
(This is primarily designed to mak)5 E 2.5(eC)-.1 G
(rafty tolerable during late night matches.)-2.5 E 4.656
(2. analyze This)72 324 R 2.155(command puts crafty into analyze mode.)
4.656 F 2.155(In this mode, Crafty starts computing for)7.155 F(whiche)
72 336 Q -.15(ve)-.25 G 3.493(rs).15 G .993(ide is on mo)-3.493 F -.15
(ve)-.15 G 3.493(,a).15 G .993(nd it continues computing and sho)-3.493
F .994(wing its analysis until a mo)-.25 F 1.294 -.15(ve i)-.15 H 3.494
(se).15 G(ntered.)-3.494 E .134(This mo)72 348 R .434 -.15(ve i)-.15 H
2.634(sm).15 G .134(ade, Crafty changes sides, and starts thinking and \
printing analysis all o)-2.634 F -.15(ve)-.15 G .934 -.4(r, b).15 H .133
(ut for the other).2 F(side no)72 360 Q -.65(w.)-.25 G .215
(This command is useful to play through a g)72 384 R .215
(ame, because you get instant feedback when you try a mo)-.05 F -.15(ve)
-.15 G 5.216(.I).15 G(f)-5.216 E .881(you w)72 396 R .881
(ant to try a dif)-.1 F .881(ferent mo)-.25 F 1.181 -.15(ve f)-.15 H
.881
(rom the one you just entered, use the "back" command to back up one).15
F(mo)72 408 Q -.15(ve)-.15 G 3.155(,o).15 G 3.155(ru)-3.155 G .655
(se "back <n>" to back up <n> mo)-3.155 F -.15(ve)-.15 G 3.156(s. Note)
.15 F .656(that one mo)3.156 F .956 -.15(ve i)-.15 H 3.156(sas).15 G
.656(ingle mo)-3.156 F .956 -.15(ve f)-.15 H .656(or the last player).15
F(,)-.4 E .192(not a mo)72 420 R .492 -.15(ve f)-.15 H .192
(or both sides.).15 F 1.792 -.8(To u)5.192 H(nmak).8 E 2.692(et)-.1 G
.192(he most recent 2 mo)-2.692 F -.15(ve)-.15 G 2.692(s\().15 G .192
(one for black, one for white\) use "back 2".)-2.692 F 4.232
(3. annotate|annotateh)72 444 R 1.732(<\214lename> <colors|name> <mo)
4.232 F -.15(ve)-.15 G 1.733(s> <mar).15 F 1.733
(gin> <time> This command is used to)-.18 F(annotate \(mak)72 456 Q 2.5
(ec)-.1 G(omments in\) a g)-2.5 E(ame that has already been played.)-.05
E .881(The annotate command produces a \214le with the .can e)72 480 R
.881(xtension added to the original name.)-.15 F .881(This \214le will)
5.881 F .358(contain pure ascii information from the annotation pass.)72
492 R .358("annotateh" produces an HTML \214le instead \(with)5.358 F
.98(the .html e)72 504 R 3.48(xtension\). This)-.15 F .979(includes the\
 normal output, plus a nice bitmapped graphical board display for)3.48 F
-2.15 -.25(ev e)72 516 T(ry position where crafty had ').25 E
(something to say'.)-.55 E .423
(<\214lename> is the name of the \214le that has the g)72 540 R .424
(ame mo)-.05 F -.15(ve)-.15 G 2.924(ss).15 G .424(tored in it.)-2.924 F
.424(This should be a PGN-compatible)5.424 F .756
(\214le, although Crafty can read nearly an)72 552 R 3.255<798c>-.15 G
.755(le with chess mo)-3.255 F -.15(ve)-.15 G 3.255(sa).15 G .755
(nd con)-3.255 F -.15(ve)-.4 G .755(rt it to pgn using the "read" and)
.15 F("sa)72 564 Q -2.25 -.15(veg a)-.2 H
(me" commands to perform the con).15 E -.15(ve)-.4 G(rsion.).15 E .432
(<colors|name> indicates which side Crafty will annotate.)72 588 R .432
(The v)5.432 F .433(alid choices are w)-.25 F 2.933(,b)-.65 G 2.933(,a)
-2.933 G .433(nd wb/bw for white)-2.933 F(only)72 600 Q 2.748(,b)-.65 G
.248(lack only)-2.748 F 2.748(,a)-.65 G .248(nd both, respecti)-2.748 F
-.15(ve)-.25 G(ly).15 E 5.248(.C)-.65 G .247
(rafty will search and produce results for the indicated color only)
-5.248 F(,)-.65 E(making mo)72 612 Q -.15(ve)-.15 G 2.5(sf).15 G
(or the other side silently as the)-2.5 E 2.5(ya)-.15 G(re read in.)-2.5
E(Alternati)72 636 Q -.15(ve)-.25 G(ly).15 E 2.797(,y)-.65 G .297
(ou can specify the player')-2.797 F 2.797(sn)-.55 G .297
(ame \(useful if you w)-2.797 F .297(ant to annotate se)-.1 F -.15(ve)
-.25 G .297(ral of your o).15 F .298(wn g)-.25 F(ames)-.05 E 1.072
(in one lar)72 648 R 1.072(ge pgn \214le, for e)-.18 F 1.072
(xample, and you alternated colors so that you can')-.15 F 3.571(tp)-.18
G 1.071(ick the right one easily\).)-3.571 F .741
(Crafty will then \214gure out which side to annotate for in each g)72
660 R 3.242(ame. Note)-.05 F .742(that the name is case-sensiti)3.242 F
-.15(ve)-.25 G(,).15 E -.2(bu)72 672 S 2.557(tt).2 G .057
(hat you only ha)-2.557 F .357 -.15(ve t)-.2 H 2.557(oe).15 G .057
(nter a string that is unique in the name \214eld.)-2.557 F .056
(IE if one name is "Anatoly Karpo)5.057 F(v")-.15 E .878
(and the other is "unkno)72 684 R .878(wn" then specifying Karpo)-.25 F
3.378(va)-.15 G 3.378(st)-3.378 G .878(he name w)-3.378 F .878
(ould be suf)-.1 F 3.379(\214cient. If)-.25 F .879(the same ')3.379 F
(string')-.55 E(appears in both names, Crafty will complain.)72 696 Q
(<mo)72 720 Q -.15(ve)-.15 G .766(s> indicates the mo).15 F -.15(ve)-.15
G 3.266(st).15 G .765(hat should be annotated.)-3.266 F .765
(If this is a single inte)5.765 F(ger)-.15 E 3.265(,a)-.4 G .765
(nnotation starts at this)-3.265 F EP
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/F0 10/Times-Roman@0 SF(mo)72 96 Q 1.547 -.15(ve n)-.15 H 1.247
(umber \(for the color gi).15 F -.15(ve)-.25 G 3.747(na).15 G(bo)-3.747
E -.15(ve)-.15 G 3.747(\)a).15 G 1.248
(nd proceeds for the rest of the g)-3.747 F 3.748(ame. If)-.05 F 3.748
(ar)3.748 G 1.248(ange is gi)-3.748 F -.15(ve)-.25 G 1.248(n, as).15 F
1.779(\(20-33\), then only mo)72 108 R -.15(ve)-.15 G 4.279(s2).15 G
1.779(0-33 inclusi)-4.279 F 2.079 -.15(ve a)-.25 H 1.779(re annotated.)
.15 F 3.379 -.8(To a)6.779 H 1.778(nnotate the complete g).8 F 1.778
(ame, you can use)-.05 F(1-999.)72 120 Q(<mar)72 144 Q .94(gin> gi)-.18
F -.15(ve)-.25 G 3.44(sas).15 G .94(core "windo)-3.44 F .94
(w" that controls whether Crafty will produce comments \(see belo)-.25 F
3.44(w\). The)-.25 F(lar)72 156 Q .062(ger this number this number)-.18
F 2.562(,t)-.4 G .062(he fe)-2.562 F .062
(wer annotations Crafty will produce.)-.25 F 2.562(An)5.062 G -2.25 -.15
(eg a)-2.562 H(ti).15 E .362 -.15(ve n)-.25 H .061(umber will result in)
.15 F(an annotation for e)72 168 Q -.15(ve)-.25 G(ry mo).15 E .3 -.15
(ve s)-.15 H(elected.).15 E .683
(<time> indicates the time limit for each search.)72 192 R .684
(Since each mo)5.684 F .984 -.15(ve s)-.15 H .684(elected requires tw)
.15 F 3.184(os)-.1 G .684(earches, you can)-3.184 F(tak)72 204 Q 3.04
(et)-.1 G .54(he number of mo)-3.04 F -.15(ve)-.15 G .54
(s, double this number and multiply by <time> to determine ho).15 F 3.04
(wl)-.25 G .54(ong the annota-)-3.04 F(tion process will tak)72 216 Q
2.5(e. This)-.1 F(time is in seconds.)2.5 E(Ho)72 240 Q 2.599(wi)-.25 G
2.599(tw)-2.599 G 2.599(orks. Suppose)-2.699 F .099
(you use the command "annotate g)2.599 F .1
(ame1 w 1-999 1.000 30" This asks Crafty to read)-.05 F .596
(the \214le "g)72 252 R .596(ame1", and annotate the white mo)-.05 F
-.15(ve)-.15 G 3.096(sf).15 G .596(or the entire g)-3.096 F 3.096
(ame. The)-.05 F(mar)3.096 E .596(gin is 1 pa)-.18 F .595
(wn and the search)-.15 F .133(time limit is 30 seconds.)72 264 R .134(\
The output for the annotate command is found in <\214lename>.can, in th\
is case this)5.134 F(is g)72 276 Q(ame1.can.)-.05 E 2.022
(Crafty \214rst searches the mo)72 300 R 2.322 -.15(ve a)-.15 H 2.022
(ctually played in the g).15 F 2.022(ame to determine the score for it.)
-.05 F 2.021(Crafty then)7.021 F .556(searches the same position, b)72
312 R .556(ut tries all le)-.2 F -.05(ga)-.15 G 3.056(lm).05 G -.15(ove)
-3.056 G 3.056(s. If).15 F .556(the score for the best mo)3.056 F .856
-.15(ve f)-.15 H .556(ound in this search is).15 F .398
(greater than the score for the mo)72 324 R .698 -.15(ve a)-.15 H .397
(ctually played plus the mar).15 F .397
(gin, then a comment is added to the output)-.18 F 2.708(\214le. This)72
336 R .208(output \214le is quite short, with all the g)2.708 F .209
(ame mo)-.05 F -.15(ve)-.15 G 2.709(s\().15 G .209(plus an)-2.709 F
2.709(yP)-.15 G .209(GN tags in the original, for identi\214-)-2.709 F
(cation purposes\) plus the brief comments.)72 348 Q
(An annotation looks lik)5 E 2.5(et)-.1 G(his:)-2.5 E({real_v)72 372 Q
(alue \(depth:best_v)-.25 E(alue PV mo)-.25 E -.15(ve)-.15 G(s\)}).15 E
(real_v)72 396 Q 1.349(alue is the score for the mo)-.25 F 1.648 -.15
(ve a)-.15 H 1.348(ctually played.).15 F 1.348
(depth is the depth Crafty searched to produce the)6.348 F(best_v)72 408
Q .547(alue and PV for what it thinks is the best sequence of mo)-.25 F
-.15(ve)-.15 G 3.047(sf).15 G .547(or both sides.)-3.047 F .547
(If you set <mar)5.547 F .547(gin> to)-.18 F .187
(1.000, you are asking Crafty to only annotate mo)72 420 R -.15(ve)-.15
G 2.687(st).15 G .187(hat either lost a pa)-2.687 F .187
(wn or more, or mo)-.15 F -.15(ve)-.15 G 2.687(st).15 G .187(hat f)
-2.687 F .187(ailed to)-.1 F .389(win a pa)72 432 R .389(wn or more.)
-.15 F .389(If you set <mar)5.389 F .389
(gin> to .300, you are asking for annotations for an)-.18 F 2.889(ym)
-.15 G .689 -.15(ove t)-2.889 H .389(hat mak).15 F(es)-.1 E
(the score drop about 1/3 of a pa)72 444 Q(wn belo)-.15 E 2.5(wt)-.25 G
(he v)-2.5 E(alue for the best mo)-.25 E .3 -.15(ve C)-.15 H
(rafty found.).15 E .184(If you ha)72 468 R .484 -.15(ve o)-.2 H .183
(ther mo).15 F -.15(ve)-.15 G 2.683(sy).15 G .183(ou w)-2.683 F .183
(ould lik)-.1 F 2.683(et)-.1 G 2.683(os)-2.683 G .183
(ee analyzed during this annotate process, at the point where the)-2.683
F(mo)72 480 Q .796 -.15(ve c)-.15 H .497(an be played, insert it into t\
he PGN \214le as an analysis comment, surrounded by \(\) or {} characte\
rs.).15 F .916(Crafty will produce analysis for this mo)72 492 R 1.215
-.15(ve a)-.15 H 3.415(sw).15 G 3.415(ell. If)-3.415 F .915
(more than one mo)3.415 F 1.215 -.15(ve a)-.15 H .915
(ppears inside a single set of).15 F .397
(delimiters, only the \214rst will be analyzed.)72 504 R 1.998 -.8(To f)
5.398 H .398(orce Crafty to analyze more than one mo).8 F -.15(ve)-.15 G
2.898(,e).15 G .398(nter them lik)-2.898 F(e)-.1 E 2.5(this: \(mo)72 516
R -.15(ve)-.15 G(1\) \(mo).15 E -.15(ve)-.15 G(2\) as though the).15 E
2.5(yw)-.15 G(ere tw)-2.5 E 2.5(os)-.1 G(eparate comments.)-2.5 E 3.659
(4. ANSI)72 540 R(on|of)3.659 E 6.159(fT)-.25 G 1.158(his command is us\
ed to control whether or not Crafty attempts to display its mo)-6.159 F
1.458 -.15(ve i)-.15 H(n).15 E(re)72 552 Q -.15(ve)-.25 G 1.243
(rse video or not.).15 F -.15(Fo)6.243 G 3.743(rP).15 G(C')-3.743 E
1.243(s, Linux, and most Unix box)-.55 F 1.244(es, this w)-.15 F 1.244
(orks \214ne.)-.1 F 1.244(Should you \214nd yourself)6.244 F .993(playi\
ng crafty via a dumb terminal, this might hose the terminal and interfe\
re with your ability to see or)72 564 R .428(input mo)72 576 R -.15(ve)
-.15 G 2.928(s. If).15 F(mo)2.928 E -.15(ve)-.15 G 2.928(sa).15 G .428
(re not displayed in re)-2.928 F -.15(ve)-.25 G .428(rse video, it').15
F 2.928(sp)-.55 G .429(robably wise to turn this of)-2.928 F 2.929(ft)
-.25 G 2.929(oa)-2.929 G -.2(vo)-3.129 G .429(id hang-).2 F
(ing the terminal you are using.)72 588 Q 2.533(5. black|white This)72
612 R .033(command simply toggles the side on mo)2.533 F -.15(ve)-.15 G
5.033(.i).15 G 2.533(fi)-5.033 G 2.533(ti)-2.533 G 2.532(sw)-2.533 G
.032(hite to mo)-2.532 F -.15(ve)-.15 G 2.532(,a).15 G .032
(nd you enter white,)-2.532 F .46(nothing happens.)72 624 R .46
(If it is white to mo)5.46 F .76 -.15(ve a)-.15 H .461
(nd you enter black, then it becomes blacks turn to mo).15 F .761 -.15
(ve i)-.15 H(mmedi-).15 E(ately from the same position.)72 636 Q
(Used only infrequently)5 E(.)-.65 E 2.523(6. book)72 660 R .022
(\(see the book e)2.523 F .022
(xplanation near the end of this document for a full e)-.15 F .022
(xplanation of this command and)-.15 F .53(its man)72 672 R 3.03(yo)-.15
G 3.03(ptions.\) Note)-3.03 F .53(that there are special commands a)3.03
F -.25(va)-.2 G .53(ilable \(*only* on the command line, *not* in).25 F
1.004(the crafty)72 684 R 1.004(.rc/.craftyrc \214les\) to direct craft\
y to speci\214c directories for the book \214les \(bookpath=/a/b/c\), t\
he)-.65 F .808(tablebase \214les \(tbpath=/i/j/k\) and the log \214les \
\(logpath=/x/y/z\).)72 696 R .808
(Note that these commands can *only* be)5.808 F .376
(used on the command line, because the)72 708 R 2.876(ym)-.15 G .376
(ust be e)-2.876 F -.15(xe)-.15 G .376
(cuted before the engine is initialized.).15 F .375(Putting them in)
5.376 F(the crafty)72 720 Q
(.rc/.craftyrc \214le will produce error messages without af)-.65 E
(fecting ho)-.25 E 2.5(wt)-.25 G(he \214les are opened.)-2.5 E EP
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/F0 10/Times-Roman@0 SF 8.002(If you need to specify multiple directori\
es \(tbpath only\) you may do so by using)72 96 R 1.431
("tbpath=path1:path2:path3:etc" or else use the more Unix- lik)72 108 R
3.931(e")-.1 G 1.431(tbpath=\(path1:path2:path3:etc\)" instead.)-3.931 F
1.048(The paths are separated by ":" \(colon\) characters and e)72 120 R
-.15(ve)-.25 G 1.048(rything is case-sensiti).15 F 1.348 -.15(ve a)-.25
H 3.548(su).15 G 3.548(sual. F)-3.548 F 1.048(or dos/win-)-.15 F(do)72
132 Q
(ws users, the separator can be a semi-color \(;\) or a comma\(,\) to a)
-.25 E -.2(vo)-.2 G(id the dri).2 E .3 -.15(ve d)-.25 H
(esignation ambiguity).15 E(.)-.65 E 3.078(7. cache=N This)72 156 R .577
(command is used to alter the cache size used for endg)3.078 F .577
(ame database probes.)-.05 F 3.077(Nc)5.577 G .577(an be a)-3.077 F .395
(simple inte)72 168 R(ger)-.15 E 2.895(,r)-.4 G .395(epresenting the nu\
mber of bytes to use or it can be speci\214ed as nK or nM representing \
n *)-2.895 F 1.315(1024 bytes or n * 1024 * 1024 bytes.)72 180 R 1.315
(This should be in multiples of the database "chunk" size, which)6.315 F
(might v)72 192 Q(ary)-.25 E 5(.U)-.65 G
(sing the nM form guarantees that you will ha)-5 E .3 -.15(ve a r)-.2 H
(easonable number).15 E(.)-.55 E 2.632(8. clock)72 216 R .133
(<ctime> <otime>)2.633 F .133(This command is primarily intended for us\
e when Crafty is playing in a tourna-)5.133 F .531
(ment, such as the WMCCC or WCCC e)72 228 R -.15(ve)-.25 G 3.031
(nts. If).15 F .531(the operator is some)3.031 F .531(what slo)-.25 F
3.031(wi)-.25 G 3.031(ne)-3.031 G .531(ntering mo)-3.031 F -.15(ve)-.15
G .531(s, or for).15 F(-)-.2 E .026
(gets to stop the clock after making a mo)72 240 R .326 -.15(ve f)-.15 H
.026(or Crafty).15 F 2.526(,t)-.65 G .026(he chess clock for the g)
-2.526 F .027(ame will drift from the v)-.05 F(alues)-.25 E .426
(that Crafty maintains internally)72 252 R 5.426(.<)-.65 G .425(ctime> \
is the time \(in minutes or hh:mm format\) crafty has left until the)
-5.426 F(ne)72 264 Q .421(xt time control, and <otime> is the opponent')
-.15 F 2.922(sr)-.55 G .422(emaining clock time.)-2.922 F .422
(This command can be used at an)5.422 F(y)-.15 E .287(time, b)72 276 R
.287(ut will only af)-.2 F .287(fect the time per mo)-.25 F .586 -.15
(ve *)-.15 H .286(after* crafty mak).15 F .286(es the current mo)-.1 F
.586 -.15(ve a)-.15 H .286(nd starts to think about).15 F
(what the opponent might do ne)72 288 Q(xt.)-.15 E 4.108
(9. computer This)72 312 R 1.608
(command usually comes from xboard/winboard, b)4.108 F 1.608
(ut can be used at an)-.2 F 4.108(yt)-.15 G 1.609(ime to tell)-4.108 F
.746(Crafty it is playing a computer)72 324 R 5.746(.T)-.55 G .746
(his will pre)-5.746 F -.15(ve)-.25 G .746
(nt some things from happening, such as a dra).15 F 3.246(ws)-.15 G .746
(core that)-3.246 F -.25(va)72 336 S
(ries, as well as adjusting the book selection code to be more selecti)
.25 E .3 -.15(ve i)-.25 H 2.5(nw).15 G(hat it plays.)-2.5 E 3.031
(10. display this)72 360 R .531(command is used to display the g)3.031 F
.531(ame board.)-.05 F .531(This board is displayed using the ICS style)
5.531 F .229(#1 type of ASCII display)72 372 R 2.729(,w)-.65 G .229
(ith white al)-2.729 F -.1(wa)-.1 G .228
(ys at the bottom of the screen, black at the top.).1 F -1.11(Ve)5.228 G
.228(ry unusable to)1.11 F(play a g)72 384 Q(ame with, b)-.05 E
(ut good to v)-.2 E(erify a position after it has been set up.)-.15 E
.857(This command is also used to display the v)72 408 R .858
(arious piece/square tables, by typing "display <piece>" where)-.25 F
.07(<piece> is replaced by pa)72 420 R .07
(wn, knight, bishop, rook, queen or king.)-.15 F .069
(The board is oriented in the same w)5.069 F .069(ay as)-.1 F .508(the \
display board with a one-to-one correspondence between the squares.)72
432 R .508(Perhaps useful for curiosity)5.508 F 3.008(,b)-.65 G(ut)
-3.208 E(not for an)72 444 Q(ything else.)-.15 E(These v)5 E
(alues can not be modi\214ed by the user)-.25 E(.)-.55 E 1.022
(The \214nal v)72 468 R 1.022(ersion of this command is used to control\
 what kind of output you will see when crafty runs.)-.15 F
(Currently the follo)72 480 Q(wing options are a)-.25 E -.25(va)-.2 G
(ilable.).25 E 1.066(display time:)113 504 R 1.067(this will mak)6.066 F
3.567(eC)-.1 G 1.067(rafty display the amount of time each side tak)
-3.567 F 1.067(es after making a)-.1 F(mo)108 516 Q -.15(ve)-.15 G(.).15
E 1.058(display changes:)113 540 R 1.058(this will mak)6.058 F 3.558(eC)
-.1 G 1.058
(rafty display the PV each time it changes during the search,)-3.558 F
(including when a mo)108 552 Q .3 -.15(ve f)-.15 H
(ails high or becomes a ne).05 E 2.5(wb)-.25 G(est mo)-2.5 E -.15(ve)
-.15 G(.).15 E .148(display v)108 576 R 2.648(ariation: this)-.25 F .149
(will mak)2.649 F 2.649(eC)-.1 G .149
(rafty display the PV at the end of each iteration, b)-2.649 F .149
(ut it will only)-.2 F(sho)108 588 Q 2.5(wt)-.25 G
(he best PV for the entire iteration, not all of the changes.)-2.5 E
(display stats:)108 612 Q(this enables basic search statistics output i\
ncluding time, nodes and so forth.)5 E .82(display e)108 636 R 3.32
(xtstats: this)-.15 F .819(enables e)3.319 F .819
(xtended search stats including the hashing statistics, search e)-.15 F
(xten-)-.15 E(sion statistics and so forth.)108 648 Q .268(display mo)
108 672 R -.15(ve)-.15 G .268(num: causes all PV output to ha).15 F .569
-.15(ve m)-.2 H .569 -.15(ove n).15 H .269
(umbers embedded in them to mak).15 F 2.769(et)-.1 G .269(he PV)-2.769 F
.383(possibly easier to read.)108 684 R .383
(This causes the PV to look lik)5.383 F 2.883(et)-.1 G 2.883(his: 12.)
-2.883 F .382(... Nx)2.882 F .382(e4 13. Bx)-.15 F .382
(e4 h6 rather than)-.15 F .484(simply Nx)108 696 R .484(e4 Bx)-.15 F
.484(e4 h6.)-.15 F .484(This is v)5.484 F .484
(ery helpful when playing on a serv)-.15 F .485
(er and whispering or kibitzing)-.15 F 3.643(analysis. It)108 708 R
1.142(will also be useful when crafty is run from within a database pro\
gram as the mo)3.643 F -.15(ve)-.15 G
(numbers will sync up with the actual g)108 720 Q(ame.)-.05 E EP
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/F0 10/Times-Roman@0 SF .415(display mo)108 96 R -.15(ve)-.15 G 2.915
(s: will).15 F .415(display each root mo)2.915 F .715 -.15(ve a)-.15 H
2.915(si).15 G 2.915(ti)-2.915 G 2.915(ss)-2.915 G .415
(earched, along with updating the search time)-2.915 F
(at the bottom of the screen, so you can see what mo)108 108 Q .3 -.15
(ve i)-.15 H 2.5(sc).15 G(urrently being analyzed.)-2.5 E 1.727
(display general:)108 132 R 1.727
(will display general information messages whene)6.727 F -.15(ve)-.25 G
4.227(rC).15 G 1.726(rafty w)-4.227 F 1.726(ants to tell you)-.1 F
(something \(ie "clearing hash tables" or other such things lik)108 144
Q 2.5(e")-.1 G(Mate in n mo)-2.5 E -.15(ve)-.15 G(s.").15 E
(If you put a "no" in front of an)72 168 Q 2.5(yo)-.15 G 2.5(ft)-2.5 G
(hese options, that will disable that particular type of output.)-2.5 E
2.818(11. dra)72 192 R 5.319(wo)-.15 G -.25(ff)-5.319 G .319
(ers Crafty a dra).25 F 4.119 -.65(w. I)-.15 H 2.819(tg).65 G .319
(enerally will look at the v)-2.819 F .319
(alue returned by the last search, and compare)-.25 F .493
(it with the v)72 204 R .493(alue returned by an internal function Dra)
-.25 F 2.993(wScore\(\). If)-.15 F .493(the search v)2.993 F .492
(alue is not abo)-.25 F .792 -.15(ve t)-.15 H .492(his result,).15 F
.705(then Crafty will accept the dra)72 216 R 4.505 -.65(w. I)-.15 H
3.205(ft).65 G .705(he search v)-3.205 F .705(alue is abo)-.25 F 1.005
-.15(ve t)-.15 H .705(he theoretical v).15 F .706(alue for a dra)-.25 F
2.006 -.65(w, C)-.15 H .706(rafty will).65 F .628(decline the dra)72 228
R 4.428 -.65(w. N)-.15 H .628(ote that crafty will of).65 F .628
(fer dra)-.25 F .628(ws based on internal analysis.)-.15 F .628
(When it of)5.628 F .627(fers a dra)-.25 F 1.927 -.65(w, y)-.15 H(ou).65
E(can respond with "dra)72 240 Q(w" although the g)-.15 E
(ame does not really end until you e)-.05 E(xit Crafty)-.15 E(.)-.65 E
2.977(12. dra)72 264 R .477(wscore N sets the dra)-.15 F 2.977(ws)-.15 G
.477(core \(or contempt f)-2.977 F .477(actor\) to N.)-.1 F .477
(If you w)5.477 F .477(ant crafty to a)-.1 F -.2(vo)-.2 G .477(id dra).2
F .477(ws, set this)-.15 F .843(number to something that is ne)72 276 R
-.05(ga)-.15 G(ti).05 E -.15(ve)-.25 G 5.843(.I).15 G 3.343(E-)-5.843 G
.843(50 says that a repetition \(dra)-3.343 F .842
(w\) is the same as being 1/2 pa)-.15 F(wn)-.15 E(do)72 288 Q 3.415
(wn. Setting)-.25 F .915(it to +100 will mak)3.415 F 3.416(ei)-.1 G
3.416(tt)-3.416 G .916(ry v)-3.416 F .916(ery hard to dra)-.15 F 3.416
(wb)-.15 G .916(ecause that looks lik)-3.416 F 3.416(ei)-.1 G 3.416(ti)
-3.416 G 3.416(sw)-3.416 G .916(inning a pa)-3.416 F(wn)-.15 E .395
(when it does so.)72 300 R .394(Note that this is dangerous \(either w)
5.394 F .394(ay\) as a -50 in a king and pa)-.1 F .394(wn ending is v)
-.15 F .394(ery lik)-.15 F(ely)-.1 E(dead lost...)72 312 Q
(and a repetition is better)5 E(.)-.55 E 2.703(13. echo)72 336 R(<te)
2.703 E 2.703(xt> This)-.15 F .203(command is normally used inside a co\
mmand \214le that you are going to use to "feed")2.703 F .328
(crafty some positions for analysis or whate)72 348 R -.15(ve)-.25 G
3.928 -.55(r. S).15 H .328
(ince crafty depends on the operating system to echo com-).55 F .546
(mands as the)72 360 R 3.046(ya)-.15 G .547
(re typed, commands read in from a \214le are "in)-3.046 F 3.047
(visible." This)-.4 F(gi)3.047 E -.15(ve)-.25 G 3.047(sy).15 G .547
(ou the ability to insert)-3.047 F .264(commands into such a \214le so \
that crafty displays a message on the screen to gi)72 372 R .563 -.15
(ve y)-.25 H .263(ou an idea of where it is).15 F
(in processing the \214le.)72 384 Q 3.888(14. edit This)72 408 R 1.389
(command has been "cloned" from GnuChess to pro)3.888 F 1.389
(vide an interf)-.15 F 1.389(ace with Xboard.)-.1 F(After)6.389 E .402
(entering the "edit" command, you are in "edit.white" mode, where an)72
420 R 2.902(yp)-.15 G .402(iece/square combination you enter)-2.902 F
1.18(will add the indicated white piece on the gi)72 432 R -.15(ve)-.25
G 3.681(ns).15 G 3.681(quare. Piece/squares)-3.681 F 1.181
(are entered as "qa3", or "bc4" for)3.681 F -.15(ex)72 444 S 2.904
(ample. This).15 F .404
(puts a white queen on a3 and a white bishop on c4.)2.904 F .403
(Once all white pieces are entered, typ-)5.403 F .306(ing a "c" changes\
 to "edit.black" mode where piece/square combinations no)72 456 R 2.807
(wp)-.25 G .307(lace black pieces.)-2.807 F -.8(Ty)5.307 G .307(ping a)
.8 F("." character e)72 468 Q(xits edit mode.)-.15 E 1.6 -.8(To c)5 H
(lear the board initially).8 E 2.5(,y)-.65 G(ou use the "#" character)
-2.5 E(.)-.55 E(Here')72 492 Q 3.541(sas)-.55 G 1.041(ample to set up t\
he original starting position, after white has played 1. e4, b)-3.541 F
1.04(ut no other mo)-.2 F -.15(ve)-.15 G(s).15 E(ha)72 504 Q .3 -.15
(ve b)-.2 H(een played.).15 E(edit)77 528 Q(#)77 540 Q
(ra1 nb1 bc1 qd1 k)77 552 Q(e1 bf1 ng1 rh1)-.1 E
(pa2 pb2 pc2 pd2 pe4 pf2 pg2 ph2)77 564 Q(c)77 576 Q(ra8 nb8 bc8 qd8 k)
77 588 Q(e8 bf8 ng8 rh8)-.1 E(pa7 pb7 pc7 pd7 pe7 pf7 pg7 ph7)77 600 Q
(.)77 612 Q .246(Note that input is free form, so piece/squares can be \
entered one per line or all on one line.)72 636 R .247(Ditto for the #,)
5.247 F .206(c, and . special characters.)72 648 R .206
(Note also that there is no w)5.206 F .205
(ay to enter castling status here.)-.1 F .205(It is f)5.205 F .205
(ar better to use)-.1 F .785
(the "setboard" command which uses a FEN-lik)72 660 R 3.286(es)-.1 G
.786(yntax and allo)-3.286 F .786
(ws you to set both castling and enpassant)-.25 F(status.)72 672 Q 3.774
(15. e)72 696 R 3.774(gtb This)-.15 F 1.274(command enables the endg)
3.774 F 1.274(ame databases.)-.05 F 1.274
(Crafty will use the "tbpath" directory \(if pro-)6.274 F 1.123
(vided\) to locate and re)72 708 R 1.124
(gister all of the databases you ha)-.15 F 1.424 -.15(ve d)-.2 H -.25
(ow).15 G 3.624(nloaded. It).25 F 1.124(will report the lar)3.624 F
1.124(gest class it)-.18 F 1.301
(found, as in "5 piece tablebase \214les found" if you do)72 720 R 1.3
(wnloaded at least one 5-piece \214le.)-.25 F 1.3(If you use this)6.3 F
EP
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/F0 10/Times-Roman@0 SF 1.233(command to enable databases, you should a\
lso consider using the "cache" command to specify the e)72 96 R(gtb)-.15
E(cache size.)72 108 Q 2.645(16. end|quit These)72 132 R .144
(commands are used to terminate crafty)2.644 F 5.144(.N)-.65 G .144
(ote that you can resume a g)-5.144 F .144(ame later without)-.05 F(ha)
72 144 Q .748(ving to replay the mo)-.2 F -.15(ve)-.15 G .748
(s, by starting Crafty using the "crafty c" command.).15 F .749
(It will immediately read in)5.748 F .185(the mo)72 156 R -.15(ve)-.15 G
2.685(sf).15 G .185(or the last g)-2.685 F .184
(ame, although you will ha)-.05 F .484 -.15(ve t)-.2 H 2.684(os).15 G
.184(et the time controls and clock time remaining your)-2.684 F(-)-.2 E
(self.)72 168 Q 2.5(17. e)72 192 R -.25(va)-.25 G(luation option <v).25
E 2.5(alue> This)-.25 F(command is used to modify the e)2.5 E -.25(va)
-.25 G(luation scores.).25 E .69(The option "asymmetry" is used to mak)
72 216 R 3.191(ec)-.1 G .691(rafty e)-3.191 F -.25(va)-.25 G .691
(luate king safety dif).25 F .691(ferently for each side.)-.25 F("e)
5.691 E -.25(va)-.25 G(luation).25 E .18(asymmetry 25" will increase th\
e king safety scores for the opponent only)72 228 R 2.68(,m)-.65 G .18
(eaning it will pay less attention)-2.68 F .762(to its o)72 240 R .763
(wn king safety than to that of its opponent.)-.25 F .763(This will mak)
5.763 F 3.263(ei)-.1 G 3.263(tp)-3.263 G .763(lay more aggressi)-3.263 F
-.15(ve)-.25 G(ly).15 E 5.763(.")-.65 G -.25(eva)-5.763 G(luation).25 E
.306(asymmetry -25" will reduce the king safety scores for for the oppo\
nent by 25%, making it care more about)72 252 R(its o)72 264 Q
(wn king safety than that of its opponent.)-.25 E(This will mak)5 E 2.5
(ei)-.1 G 2.5(tp)-2.5 G(lay more defensi)-2.5 E -.15(ve)-.25 G(ly).15 E
(.)-.65 E .117(The "bscale" option will adjust the scores for block)72
288 R .118(ed pa)-.1 F 2.618(wns. The)-.15 F(def)2.618 E .118(ault v)-.1
F .118(alue is 100.)-.25 F .118(Increasing this will)5.118 F 1.006
(tend to mak)72 300 R 3.506(eC)-.1 G 1.006(rafty dislik)-3.506 F 3.506
(eb)-.1 G(lock)-3.506 E 1.006(ed pa)-.1 F 1.005
(wn positions more, which will lead to more open positions.)-.15 F(Note)
6.005 E 1.271(that this only af)72 312 R 1.272(fects mo)-.25 F -.15(ve)
-.15 G 3.772(s_).15 G 1.272(after_ the opening book has been follo)
-3.772 F 1.272(wed, which means that the position)-.25 F(might be block)
72 324 Q(ed before the e)-.1 E -.25(va)-.25 G
(luation term has a chance to af).25 E(fect the g)-.25 E(ame.)-.05 E .73
(The "kscale" option will adjust all king safety scores based on the ')
72 348 R -.25(va)-.5 G .729(lue' entered.).25 F -.15(Fo)5.729 G 3.229
(re).15 G .729(xample, "e)-3.379 F -.25(va)-.25 G(lua-).25 E .063(tion \
kscale 50" will reduce all king safety scores to 50% of their normal v)
72 360 R 2.563(alue. "e)-.25 F -.25(va)-.25 G .063
(luation kscale 133" will).25 F
(increase all king safety scores to 133% of their normal v)72 372 Q
(alues.)-.25 E .095
(The option "tropism" is used to scale king tropism scores.)72 396 R
.094(This will attract pieces to)5.094 F -.1(wa)-.25 G .094(rd kings.).1
F 2.594(Av)5.094 G .094(alue of)-2.844 F .535(100 means no change.)72
408 R .535(other v)5.535 F .535(alues are treated as a percentage \(lik)
-.25 F 3.036(es)-.1 G .536(cale\) to increase \(> 100\) or decrease)
-3.036 F(\(<100\) the king tropism scores.)72 420 Q
(When you use this command, you will see something lik)72 444 Q 2.5(et)
-.1 G(his:)-2.5 E(modi\214ed king-safety v)72 468 Q(alues:)-.25 E 5
(white: 0 4)72 480 R 2.5(16 26 39 45 58 77 87 90 93 96)5 F
(100 103 106 109)2.5 E
(112 116 119 122 125 128 128 128 128 128 128 128 128 128 128 128)89.5
492 Q 5(black: 0 5)72 516 R 2.5(20 32 48 56 72 96)5 F
(108 112 116 120 124 128 132 136)2.5 E
(140 144 148 152 156 160 160 160 160 160 160 160 160 160 160 160)89.5
528 Q .477(Those v)72 552 R .477(alues represent the king-safety e)-.25
F -.25(va)-.25 G .476(luation as the king gets more and more e).25 F
2.976(xposed. This)-.15 F .476(is al)2.976 F -.1(wa)-.1 G(ys).1 E .303
(based on the f)72 564 R .304(ast that "crafty" will be the side on mo)
-.1 F .604 -.15(ve w)-.15 H .304(hen the search starts.).15 F .304
(In the abo)5.304 F -.15(ve)-.15 G 2.804(,i).15 G 2.804(tw)-2.804 G .304
(as white')-2.904 F(s)-.55 E(mo)72 576 Q 1.196 -.15(ve w)-.15 H .896
(hen this w).15 F .896
(as typed, meaning that it appears that crafty will be playing black.)
-.1 F .895(Notice that white')5.896 F(s)-.55 E .725
(king safety numbers are scaled by 20% to mak)72 588 R 3.225(ei)-.1 G
3.225(ts)-3.225 G .725(lightly more cautious about its o)-3.225 F .726
(wn king.)-.25 F .726(If you type)5.726 F .789
("go" in this position, the scores get re)72 600 R -.15(ve)-.25 G .788
(rsed as Crafty').15 F 3.288(ss)-.55 G .788(cores are al)-3.288 F -.1
(wa)-.1 G .788(ys left alone \(with the asymmetry).1 F
(option\) and the opponent')72 612 Q 2.5(ss)-.55 G(cores are scaled do)
-2.5 E(wn as indicated.)-.25 E -1.1(Yo)72 636 S 3.434(uw)1.1 G .934
(ill see similar numbers \(b)-3.434 F .934(ut not black and white sets\
\) that represent the actual scores produced for)-.2 F .72
(king tropism.)72 648 R .72
(Note that pieces interact to choose which element of this v)5.72 F .72
(ector is used, b)-.15 F .72(ut in general, the)-.2 F
(more pieces are close to the king, the lar)72 660 Q
(ger the element from this array)-.18 E(.)-.65 E 1.064
(The "pscale" option is used to scale normal pa)72 684 R 1.065
(wn structure scoring in the same w)-.15 F 1.065
(ay as the other scaling)-.1 F 2.5(options. 100)72 696 R(is the def)2.5
E 2.5(ault. V)-.1 F(alues less than 100 reduce this term, v)-1.11 E
(alues o)-.25 E -.15(ve)-.15 G 2.5(r1).15 G(00 in\215ate it.)-2.5 E
1.651(The "ppscale" option is used to scale some passed pa)72 720 R 1.65
(wn scoring in the same w)-.15 F 1.65(ay as the other scaling)-.1 F EP
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/F0 10/Times-Roman@0 SF 3.127(options. 100)72 96 R .627(is the def)3.127
F 3.127(ault. V)-.1 F .627(alues less than 100 reduce this term, v)-1.11
F .627(alues o)-.25 F -.15(ve)-.15 G 3.127(r1).15 G .628
(00 in\215ate it.)-3.127 F .628(This mainly)5.628 F(ef)72 108 Q .932
(fects outside passed pa)-.25 F .932(wns/protected passed pa)-.15 F
3.432(wns. The)-.15 F .931(normal pa)3.431 F .931
(wn scoring computes the v)-.15 F .931(alue of a)-.25 F .711(passed pa)
72 120 R 3.211(wn. This)-.15 F .711
(term is then used to scale those terms that modify this v)3.211 F .711
(alue further)-.25 F 3.211(,s)-.4 G .711(uch as tw)-3.211 F 3.212(oc)-.1
G(on-)-3.212 E(nected passed pa)72 132 Q(wns on the 6th, or a passed pa)
-.15 E(wn with the king supporting it in an endg)-.15 E(ame.)-.05 E 2.5
(18. e)72 156 R(xtensions type v)-.15 E(alue)-.25 E 1.152
(This command is used to control the e)72 180 R 1.152
(xtension depth for the v)-.15 F 1.152(arious e)-.25 F 1.152
(xtensions done in Crafty')-.15 F 3.651(ss)-.55 G(earch.)-3.651 E .206
(The e)72 192 R .207(xtensions are set as decimel numbers that represen\
t plies \(or fractions of plies\) to e)-.15 F .207(xtend for each par)
-.15 F(-)-.2 E .933(ticular reason.)72 204 R .933(Most def)5.933 F .933
(ault to 1.0 and .75, b)-.1 F .933(ut an)-.2 F 3.433(yv)-.15 G .932
(alue can be used.)-3.683 F .932(Note that v)5.932 F .932
(alue > 1.0 are _v)-.25 F(ery_)-.15 E .062(dangerous as the)72 216 R
2.562(yc)-.15 G .062(an cause the search to become non-terminating \(cr\
afty will stop when it runs out of time)-2.562 F(for the mo)72 228 Q
-.15(ve)-.15 G 2.5(,b).15 G(ut it might not be able to get an)-2.7 E
(ything useful from such a search\).)-.15 E .585(These e)72 252 R .585
(xtensions are presently limited to a maximum of one ply of e)-.15 F
.585(xtensions at an)-.15 F 3.084(yp)-.15 G .584(oint in the tree.)
-3.084 F(IE)5.584 E(no matter what you set these v)72 264 Q
(alues to, the)-.25 E 2.5(yc)-.15 G(an not e)-2.5 E
(xceed one ply at present.)-.15 E 3.518(incheck This)72 288 R 1.019
(is the amount to e)3.519 F 1.019(xtend when the side on mo)-.15 F 1.319
-.15(ve m)-.15 H(ak).15 E 1.019(es a mo)-.1 F 1.319 -.15(ve t)-.15 H
1.019(hat lea).15 F -.15(ve)-.2 G 3.519(st).15 G 1.019(he opponent in)
-3.519 F 2.883(check. Note)72 300 R .383(that Crafty e)2.883 F .383
(xtends on the ply where the check is played, not on the ne)-.15 F .383
(xt ply where the oppo-)-.15 F(site side is in check.)72 312 Q 3.179
(onerep This)72 336 R .679(is the one-reply-to-check e)3.179 F .68
(xtensions, and is done at the point where one side is in check and)-.15
F(has e)72 348 Q(xactly one le)-.15 E -.05(ga)-.15 G 2.5(lm).05 G .3
-.15(ove t)-2.5 H 2.5(oe).15 G(scape from the check.)-2.5 E 2.5
(pushpp This)72 372 R(is the e)2.5 E
(xtension used for certain passed pa)-.15 E(wn pushes in the endg)-.15 E
(ame.)-.05 E 2.744(recapture This)72 396 R .244(is the recapture e)2.744
F .243(xtension, and is applied when the current mo)-.15 F .543 -.15
(ve r)-.15 H .243(ecaptures an equal-v).15 F(alued)-.25 E .829
(piece that made a capture at the pre)72 408 R .829(vious ply)-.25 F
5.829(.I)-.65 G 3.329(EB)-5.829 G .829(xN, PxB.)-3.329 F .829
(Note that this can only be applied once for)5.829 F -2.15 -.25(ev e)72
420 T(ry tw).25 E 2.5(op)-.1 G(lies so that BxN, BxB, NxB, NxN w)-2.5 E
(on')-.1 E 2.5(tl)-.18 G(ook lik)-2.5 E 2.5(et)-.1 G(hree recaptures.)
-2.5 E 3.351(mate This)72 444 R .851(is the mate threat e)3.351 F .851
(xtensions and is applied when a null mo)-.15 F 1.15 -.15(ve s)-.15 H
.85(earch returns -MA).15 F .85(TED, which)-1.11 F .241
(means that doing nothing gets the side on mo)72 456 R .542 -.15(ve m)
-.15 H 2.742(ated. The).15 F .242(opponent must ha)2.742 F .542 -.15
(ve s)-.2 H .242(ome sort of serious mate).15 F
(threat in such a position.)72 468 Q 3.199(19. \215ag)72 492 R(on|of)
3.199 E 5.699(fT)-.25 G .699
(his command is used to force crafty to end a g)-5.699 F .699
(ame where the opponent runs out of time)-.05 F
(with winboard/xboard \(on\) or to ignore this \(of)72 504 Q
(f\) if desired.)-.25 E 2.91(20. force)72 528 R([mo)2.91 E -.15(ve)-.15
G 5.41(]T).15 G .41(his command is used to force Crafty to play a mo)
-5.41 F .711 -.15(ve t)-.15 H .411(hat is dif).15 F .411
(ferent from the one cho-)-.25 F .087
(sen and played by the tree search.)72 540 R .087(If [mo)5.087 F -.15
(ve)-.15 G 2.587(]i).15 G 2.587(sg)-2.587 G -2.15 -.25(iv e)-2.587 H
.087(n, and it is a le).25 F -.05(ga)-.15 G 2.587(lm).05 G -.15(ove)
-2.587 G 2.587(,C).15 G .086(rafty will retract its last mo)-2.587 F
-.15(ve)-.15 G .521(and mak)72 552 R 3.021(et)-.1 G .521(his mo)-3.021 F
.821 -.15(ve i)-.15 H 3.021(nstead. It).15 F .521
(does not change the side on mo)3.021 F -.15(ve)-.15 G 3.021(,b).15 G
.521(ut does change the position of course.)-3.221 F(If [mo)72 564 Q
-.15(ve)-.15 G 2.5(]i).15 G 2.5(sn)-2.5 G(ot gi)-2.5 E -.15(ve)-.25 G
(n, Crafty will prompt you for a mo).15 E .3 -.15(ve t)-.15 H 2.5(om).15
G(ak)-2.5 E(e.)-.1 E 3.487(21. help This)72 588 R .987(command displays\
 multiple pages of one-line help, one command per line.)3.487 F .986
(If a line ends)5.986 F(with [help], then you can use help follo)72 600
Q(wed by the speci\214c command to get detailed help.)-.25 E 3.055
(22. history This)72 624 R .555(command displays the history in a v)
3.055 F .555(ertical column with one mo)-.15 F .855 -.15(ve f)-.15 H
.555(or white and one per).15 F .561(black per line.)72 636 R .561
(There are other w)5.561 F .561(ays to display the current g)-.1 F .56
(ame mo)-.05 F -.15(ve)-.15 G 3.06(sa).15 G .56(nd also to sa)-3.06 F
.86 -.15(ve t)-.2 H .56(hem in \214les that).15 F(are e)72 648 Q
(xplained later)-.15 E(.)-.55 E 3.428(23. hash=x)72 672 R .928
(and hashp=x)3.428 F .928(These commands are used to adjust the size of\
 the hash tables in Crafty)5.928 F 5.929(.h)-.65 G(ash)-5.929 E 1.591(m\
odi\214es the size of the transposition/refutation table, while hashp m\
odi\214es the size of the pa)72 684 R 1.59(wn struc-)-.15 F .92
(ture/king safety hash table.)72 696 R .92
(The sizes may be entered as one of the follo)5.92 F .92(wing tw)-.25 F
3.42(ot)-.1 G .92(ypes of v)-3.42 F .92(alues: nnnK)-.25 F .053
(where nnn is an inte)72 708 R .052(ger indicating ho)-.15 F 2.552(wm)
-.25 G(an)-2.552 E 2.552(yK)-.15 G .052
(bytes Crafty should use for this hash table; nnnM where nnn)-2.552 F
(is an inte)72 720 Q(ger indicating ho)-.15 E 2.5(wm)-.25 G(an)-2.5 E
2.5(yM)-.15 G(bytes Crafty should use.)-2.5 E EP
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/F0 10/Times-Roman@0 SF 1.511
(The transposition/Refutation table is the most critical of the tw)72 96
R 1.512(o, because it directly af)-.1 F 1.512(fects search ef)-.25 F
<8c2d>-.25 E(cienc)72 108 Q 1.689 -.65(y, p)-.15 H .389
(articularly in the endg).65 F 2.889(ame. F)-.05 F .389
(or this reason this should be maximized.)-.15 F .388(The most ef)5.389
F(fecti)-.25 E .688 -.15(ve s)-.25 H .388(ize for).15 F .043
(this hash table is 3/4 of your a)72 120 R -.25(va)-.2 G .044
(ilable memory).25 F 5.044(.I)-.65 G 2.544(fy)-5.044 G .044(ou don')
-2.544 F 2.544(tk)-.18 G(no)-2.544 E 2.544(wh)-.25 G .544 -.25(ow t)
-2.544 H 2.544<6f8c>.25 G .044(gure this out, b)-2.544 F .044(ut kno)-.2
F 2.544(wt)-.25 G .044(hat you)-2.544 F(ha)72 132 Q .884 -.15(ve 1)-.2 H
3.084(6m).15 G -.15(eg)-3.084 G 3.084(sf).15 G .583(or e)-3.084 F .583
(xample, the)-.15 F 3.083(yy)-.15 G .583
(ou can say hash=16M and crafty will round that do)-3.083 F .583
(wn to 12M, which is)-.25 F .108(3/4 of a po)72 144 R .108(wer of tw)
-.25 F 2.608(os)-.1 G 2.608(ize. If)-2.608 F .108(you study the sizes t\
hat are possible, you will \214nd 3M, 6M, 12M, 24M, 48M,)2.608 F .423
(and so forth.)72 156 R(An)5.423 E .423(ything up to, b)-.15 F .423
(ut not including, the ne)-.2 F .423(xt size will be rounded do)-.15 F
.423(wn to the ne)-.25 F .423(xt lo)-.15 F .423(wer size.)-.25 F .298
(hashp should be set to approximately 1/2 of what is left.)72 168 R -.15
(Fo)5.298 G 2.799(re).15 G .299
(xample, the P6 Crafty runs on when playing)-2.949 F .071
(on ICC often uses hash=48M and hashp=8M.)72 180 R .071
(The only thing to w)5.071 F .07(atch for is that if you mak)-.1 F 2.57
(et)-.1 G .07(his too lar)-2.57 F(ge,)-.18 E .029
(particularly under windo)72 192 R .029(ws, performance will suf)-.25 F
.029(fer badly because of paging I/O o)-.25 F -.15(ve)-.15 G 2.53
(rhead. When).15 F .03(Crafty is)2.53 F .473
(searching in a normal \(non-book, non-endg)72 204 R .473
(ame database\) position, the disk light should *not* be on, indi-)-.05
F(cating lots of I/O.)72 216 Q .493
(There is no danger in making this table too lar)72 240 R .493
(ge, although you ha)-.18 F .793 -.15(ve t)-.2 H 2.993(ow).15 G .494
(atch out because if Crafty barely)-3.093 F .029(\214ts in memory)72 252
R 2.529(,d)-.65 G .028
(oing something else on the machine can cause Crafty to be sw)-2.529 F
.028(apped out completely or par)-.1 F(-)-.2 E(tially)72 264 Q 3.106(,d)
-.65 G .606(epending on the operating system you are using.)-3.106 F
.606(If you are going to use the machine for an)5.606 F(ything)-.15 E
.069(else while Crafty is running, it is better to "pretend" that the m\
achine only has 1/2 of the memory it actually)72 276 R
(does when computing the size of the hash tables you w)72 288 Q
(ant to use.)-.1 E 3.207(24. import)72 312 R .707(<\214lename> [clear])
3.207 F .708(This command is used to import an)5.707 F 3.208(ys)-.15 G
.708(ort of learning data that Crafty sup-)-3.208 F 1.397(ports, which \
currently includes book learning data and position learning data.)72 324
R 1.397(This command reads the)6.397 F .899(appropriate <\214lename> an\
d imports that learned data, just as though Crafty had learned it by pl\
aying the)72 336 R -.05(ga)72 348 S 2.709(mes. The).05 F .209([clear] o\
ption, if speci\214ed, caused all old learned results to be cleared bef\
ore the import opera-)2.709 F(tion, otherwise the imported data is simp\
ly added to what is already present.)72 360 Q 2.821(25. input)72 384 R
2.821(<\214lename> This)2.821 F .321
(command is used to redirect the console input I/O stream from the k)
2.821 F -.15(ey)-.1 G .322(board to).15 F 2.831<618c>72 396 S 2.831
(le. Crafty)-2.831 F .331
(will then read commands from this \214le, rather than from the k)2.831
F -.15(ey)-.1 G .33(board, and e).15 F -.15(xe)-.15 G .33
(cute them just).15 F 1.667(as though the)72 408 R 4.167(yw)-.15 G 1.667
(ere typed in.)-4.167 F 1.668
(Such a command \214le *must* be terminated by an "e)6.667 F 1.668
(xit" command \(no)-.15 F .906
(quotes\) as the last command in the \214le.)72 420 R .906(This re)5.906
F -.15(ve)-.25 G .906(rts the input stream back to the k).15 F -.15(ey)
-.1 G .906(board, and prompts).15 F(you for another command or mo)72 432
Q -.15(ve)-.15 G(.).15 E .186(This command might be used to con\214gure\
 crafty for a speci\214c time control, by putting the appropriate time)
72 456 R(control commands in the \214le, or to customize the hash table\
 sizes as needed.)72 468 Q 2.95(26. info This)72 492 R .449
(command is used to display information about Crafty and the current g)
2.95 F 2.949(ame. Such)-.05 F .449(things as)2.949 F(the time control, \
the time left on the clocks and other information is sho)72 504 Q(wn.)
-.25 E 3.457(27. learn)72 528 R 3.457(nc)3.457 G .958
(ontrols the learning f)-3.457 F .958(acilities in crafty)-.1 F 5.958
(.C)-.65 G .958(urrently this is a 3-bit boolean switch,)-5.958 F .958
(bit 1 \(001\))5.958 F 1.913(controls book learning, bit 2 \(010\) cont\
rols position learning, and bit 3 \(100\) controls result learning.)72
540 R 1.008
(learn=0 disables all learning, learn=1 enables book learning only)72
552 R 3.509(,l)-.65 G 1.009(earn=2 enables position learning only)-3.509
F(,)-.65 E 1.325(and learn=4 enables result learning.)72 564 R 1.325
(Add the v)6.325 F 1.325
(alues together to turn on more than one type of learning)-.25 F(\(def)
72 576 Q(ault=7 to enable e)-.1 E -.15(ve)-.25 G(rything\).).15 E 2.891
(28. le)72 600 R -.15(ve)-.25 G 2.891(l<).15 G .391(m> <t> <inc>)-2.891
F .391(This command w)5.391 F .391(as tak)-.1 F .392
(en directly from GnuChess so that the Xboard/W)-.1 F(inBoard)-.4 E
(interf)72 612 Q 1.405(ace w)-.1 F 1.405(ould interf)-.1 F 1.405
(ace with Crafty)-.1 F 6.405(.T)-.65 G 1.405(here are other better w)
-6.405 F 1.404(ays to set the time, b)-.1 F 1.404(ut this one is well-)
-.2 F(kno)72 624 Q 2.707(wn. The)-.25 F .207
(three parameters are <m> \(number of mo)2.707 F -.15(ve)-.15 G 2.707
(si).15 G 2.707(nt)-2.707 G .207(he g)-2.707 F 2.707(ame\) <t>)-.05 F
.208(initial time on the clock.)2.707 F(After)5.208 E .79(<m> mo)72 636
R -.15(ve)-.15 G 3.29(sa).15 G .79
(re made, this amount of time is added to the clock ag)-3.29 F 3.289
(ain. <inc>)-.05 F .789(is the Fischer)3.289 F .789(-Clock incre-)-.2 F
(ment that is added back to each clock after a mo)72 648 Q .3 -.15(ve i)
-.15 H 2.5(sm).15 G 2.5(ade. It)-2.5 F
(may be zero for a non-increment g)2.5 E(ame.)-.05 E(Examples:)72 672 Q
(le)72 696 Q -.15(ve)-.25 G 22.5 2.5(l050 \().15 H(ICS 5 0 g)-2.5 E
(ame\))-.05 E(le)72 708 Q -.15(ve)-.25 G 22.5 2.5(l053 \().15 H
(ICS 5 3 g)-2.5 E(ame\))-.05 E(le)72 720 Q -.15(ve)-.25 G 2.5(l01).15 G
2.5(53)-2.5 G 25(0\()-2.5 G(ICS 15 30 g)-25 E(ame\))-.05 E EP
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/F0 10/Times-Roman@0 SF 2.824(29. list)72 96 R 2.824(GM|IM|C|AK|S +name)
2.824 F .324([+name ...] -name [-name ...])2.824 F .325
(This command is used to maintain the inter)5.324 F(-)-.2 E .199(nal "l\
ists" Crafty uses to auto-tune itself when playing on a chess serv)72
108 R(er)-.15 E 5.199(.T)-.55 G .199(here are three lists, GM, IM and)
-5.199 F 3.965(C. If)72 120 R(Crafty')3.965 E 3.965(so)-.55 G 1.465
(pponent is in an)-3.965 F 3.965(yo)-.15 G 3.965(ft)-3.965 G 1.465
(hese lists, Crafty adjusts internal controls that af)-3.965 F 1.466
(fect ho)-.25 F 1.466(w/when it)-.25 F 1.422(resigns or of)72 132 R
1.422(fers dra)-.25 F 1.422(ws, and ho)-.15 F 3.922(wr)-.25 G 1.422
(andomly it will choose mo)-3.922 F -.15(ve)-.15 G 3.922(sf).15 G 1.422
(rom the opening book.)-3.922 F -.15(Fo)6.421 G 3.921(re).15 G(xample,)
-4.071 E 1.411(Crafty resigns much sooner ag)72 144 R 1.412
(ainst a GM, because it assumes he kno)-.05 F 1.412(ws ho)-.25 F 3.912
(wt)-.25 G 3.912(ow)-3.912 G 1.412(in a rook-up ending,)-3.912 F(re)72
156 Q -.05(ga)-.15 G 1.694(rdless of ho).05 F 4.193(wm)-.25 G 1.693
(uch time is left.)-4.193 F 1.693(By the same tok)6.693 F 1.693
(en, when playing ag)-.1 F 1.693(ainst computers, Crafty will)-.05 F(al)
72 168 Q -.1(wa)-.1 G .097(ys assume that a dra).1 F 2.597(wi)-.15 G
2.597(s0)-2.597 G .097(.000, so that it doesn')-2.597 F 2.597(tw)-.18 G
.098(reck its position trying to a)-2.597 F -.2(vo)-.2 G .098
(id repeating a position.).2 F .322
(The AK list will automatically kibitz scores/PV')72 192 R 2.822(si)-.55
G 2.822(ft)-2.822 G .321(he opponent is in this list.)-2.822 F .321
(The S list will turn on spe-)5.321 F
(cial scoring for opponents in this list.)72 204 Q
(The only current member is "mercilous".)5 E .209(The syntax +name1 +na\
me2 simply adds these players to the speci\214ed list.)72 228 R 1.809
-.8(To r)5.209 H(emo).8 E .509 -.15(ve a n)-.15 H .209(ame, use -name1)
.15 F 3.078(-name2. Y)72 240 R .578
(ou can use one command per name to remo)-1.1 F .878 -.15(ve o)-.15 H
3.077(ra).15 G .577(dd, or you can use one command to add and)-3.077 F
(remo)72 252 Q .708 -.15(ve m)-.15 H .408(ultiple names.).15 F .409
(Note that all names must be entered in lo)5.408 F .409
(wercase characters, using an)-.25 F 2.909(yu)-.15 G(ppercase)-2.909 E
(characters will break the matching algorithm.)72 264 Q 2.741(30. log)72
288 R(of)2.741 E 2.741(f|on|<n> This)-.25 F .241
(command is used to disable logging.)2.741 F .24(The def)5.241 F .24
(ault is log on, which causes crafty to)-.1 F .341(produce a ne)72 300 R
2.841(wl)-.25 G .341(og.nnn \214le for each g)-2.841 F .341(ame played.)
-.05 F .342(If you are running Crafty on a serv)5.341 F(er)-.15 E 2.842
(,y)-.4 G .342(ou might use log)-2.842 F(of)72 312 Q .911
(f, which disables creating these \214les as well as the g)-.25 F .91
(ame.nnn \214les used to restart a g)-.05 F .91(ame after you e)-.05 F
(xit)-.15 E .252(crafty and come back later)72 324 R 5.252(.I)-.55 G
2.752(fy)-5.252 G .253(ou use the form "log n" crafty will simply displ\
ay the last n lines of the log)-2.752 F .035(on the screen.)72 336 R
.035(If you use "log n \214le" crafty will cop)5.035 F 2.535(yt)-.1 G
.034(he last n lines of the log to "\214le" which could be your)-2.535 F
(hard dri)72 348 Q -.15(ve)-.25 G 2.5(,o).15 G 2.5(ra\215)-2.5 G(opp)
-2.5 E -.65(y.)-.1 G .325(Note that if you run with log of)72 372 R .325
(f, you will be unable to \214nd out what Crafty w)-.25 F .326
(as thinking about since there)-.1 F .567(is no other record of the g)72
384 R 3.067(ame. Y)-.05 F .567(ou will al)-1.1 F -.1(wa)-.1 G .566
(ys see a g).1 F .566(ame.001 because as crafty plays a g)-.05 F .566
(ame, this con-)-.05 F .127(tains all the real mo)72 396 R -.15(ve)-.15
G 2.628(sp).15 G .128(layed so f)-2.628 F .128
(ar so that you can back up if needed.)-.1 F .128
(you will also see a log.001 \214le, b)5.128 F(ut)-.2 E
(it will be empty)72 408 Q(.)-.65 E 3.067(31. ls)72 432 R .567(<\214len\
ame> will list all the \214les that match the \214lename wildcard \(the\
 wildcards depend on the sys-)3.067 F .061(tem you are using, b)72 444 R
.061(ut generally *, ? will w)-.2 F .061(ork \214ne.)-.1 F .062
(you can also supply path information in the \214lename if)5.062 F .241
(you w)72 456 R .241(ant to list the contents of a dif)-.1 F .241
(ferent directory)-.25 F 5.241(.J)-.65 G .241
(ust use the same syntax you w)-5.241 F .241(ould if you were using)-.1
F("ls" under unix or "dir" under windo)72 468 Q(ws.)-.25 E 4.373
(32. mode)72 492 R 4.374(tournament|normal This)4.373 F 1.874
(command is primarily used to put Crafty into "tournament" mode,)4.374 F
.085
(which is intended for use when Crafty is playing in computer chess e)72
504 R -.15(ve)-.25 G 2.584(nts. It).15 F .084(accomplishes tw)2.584 F
2.584(ot)-.1 G 2.584(hings: \(1\))-2.584 F(mak)72 516 Q .261(es all dra)
-.1 F .261(ws return a score of 0.000, and \(2\) mak)-.15 F .261
(es crafty issue a message after each mo)-.1 F .561 -.15(ve s)-.15 H(ho)
.15 E .262(wing the)-.25 F 1.026(internal chess clock time, and request\
ing that that operator check and adjust as needed using the "clock")72
528 R 3.415(command. This)72 540 R .915(primarily mak)3.415 F .915
(es Crafty comply with computer chess rules that say the operator can')
-.1 F 3.416(td)-.18 G(o)-3.416 E(an)72 552 Q
(ything not speci\214cally requested by the program.)-.15 E 4.769
(33. name)72 576 R 4.769(<name> This)4.769 F 2.268
(command is an ICS-play speci\214c command.)4.769 F(Xboard/W)7.268 E
2.268(inBoard uses this to)-.4 F .676(inform Crafty of the opponent')72
588 R 3.176(sn)-.55 G 3.176(ame. Crafty)-3.176 F .676
(uses the name, and looks it up in its GM/IM/C lists, and if)3.176 F
1.369(found, adjusts itself accordingly)72 600 R 6.369(.T)-.65 G 1.368
(his is not used by the PGN code and this will not cause the players)
-6.369 F(<name> to sho)72 612 Q 2.5(wu)-.25 G 2.5(pi)-2.5 G 2.5(nt)-2.5
G(he PGN tag section.)-2.5 E 3.207(34. ne)72 636 R 5.707(wT)-.25 G .707
(his command wipes e)-5.707 F -.15(ve)-.25 G .707
(rything out and starts a brand ne).15 F 3.207(wg)-.25 G 3.207(ame. It)
-3.257 F .708(closes the old log-\214le and)3.207 F -.05(ga)72 648 S
.865(me-\214le, and opens the ne).05 F .864
(xt sequential numbered \214le.)-.15 F .864(It also resets the g)5.864 F
.864(ame to the be)-.05 F .864(ginning and pre-)-.15 F .219
(pares to start a brand ne)72 660 R 2.719(wg)-.25 G 2.719(ame. This)
-2.769 F -.1(wa)2.719 G 2.719(sa).1 G .22(dded for Xboard, b)-2.719 F
.22(ut it turns out that Xboard does not use this,)-.2 F 1.05
(rather it starts Crafty fresh for each ne)72 672 R 3.55(wg)-.25 G 1.05
(ame by \214rst terminating the old cop)-3.6 F 3.55(yt)-.1 G 1.05
(hen starting a ne)-3.55 F 3.55(wo)-.25 G(ne.)-3.55 E .031
(Not nearly as ef)72 684 R .031(\214cient as using "ne)-.25 F .031(w" b)
-.25 F .031(ut lik)-.2 F .031(ely safer it a program can')-.1 F 2.531
(tb)-.18 G 2.531(es)-2.531 G .031(ure of resetting e)-2.531 F -.15(ve)
-.25 G .032(rything back).15 F(to the initial state.)72 696 Q 4.516
(35. noise)72 720 R 4.516(<n> This)4.516 F 2.016
(command sets the "noise" le)4.516 F -.15(ve)-.25 G 4.516(li).15 G 4.516
(nC)-4.516 G(rafty)-4.516 E 7.015(.B)-.65 G(asically)-7.015 E 4.515(,u)
-.65 G 2.015(ntil <n> nodes ha)-4.515 F 2.315 -.15(ve b)-.2 H(een).15 E
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(searched, crafty will be silent and not display analysis.)72 96 Q .201
(This is useful in tw)72 120 R 2.701(ow)-.1 G 2.701(ays. First,)-2.801 F
.201(in end-g)2.701 F .201
(ames, 20+ ply searches are not uncommon, and the search analy-)-.05 F
.194(sis for the \214rst fe)72 132 R 2.694(wp)-.25 G .194(lies arri)
-2.694 F -.15(ve)-.25 G 2.693(ss).15 G 2.693(oq)-2.693 G .193
(uickly that it is distracting.)-2.693 F .193(Second, when observing g)
5.193 F .193(ames \(ne)-.05 F 2.693(wi)-.25 G(nter)-2.693 E(-)-.2 E -.1
(fa)72 144 S .587(ce only\) on ICS serv).1 F .587
(ers, this can be used to a)-.15 F -.2(vo)-.2 G .587(id ha).2 F .587
(ving Crafty generate too man)-.2 F 3.088(ya)-.15 G .588
(nalysis kibitzes.)-3.088 F(A)5.588 E -.25(va)72 156 S 1.682
(lue of 100000 will basically shut of).25 F 4.182(fa)-.25 G 1.982 -.15
(ny o)-4.182 H 1.681
(utput for the \214rst second or so \(on a P6/200\).).15 F(Similarly)
6.681 E(,)-.65 E .325(1000000 will eliminate an)72 168 R 2.825(yo)-.15 G
.326(utput for about the \214rst 10 seconds.)-2.825 F .326(When w)5.326
F .326(atching and kibitzing g)-.1 F .326(ames lik)-.05 F(e)-.1 E .186
(the W)72 180 R .186(orld Championship g)-.8 F .186(ames on ICC, I gene\
rally use 5000000, which is almost one minute of silence so)-.05 F
(that the \214rst PV it kibitzes is a pretty deep search.)72 192 Q .098
(noise 0 will cause *all* analysis to be displayed, which on a f)72 216
R .098(ast machine causes no problems.)-.1 F .098(On a slo)5.098 F(wer)
-.25 E .621(machine, or o)72 228 R -.15(ve)-.15 G 3.121(ras).15 G(lo)
-3.121 E 3.121(wp)-.25 G .621
(hone connection, this might cause a big communication backlog.)-3.121 F
.62(The def)5.62 F .62(ault is)-.1 F
(roughly one second on a P6/200 \(100000\) b)72 240 Q
(ut can be modi\214ed by this command.)-.2 E 2.792(36. operator)72 264 R
2.792(<n> Another)2.792 F .293(command intended for use when Crafty is \
playing in a tournament, operated by)2.792 F 2.68(ah)72 276 S 2.68
(uman. This)-2.68 F .18
(tells crafty to "hide" <n> minutes of time and not use them.)2.68 F .18
(This time is basically allocated)5.18 F .465(to the operator to mak)72
288 R 2.965(eu)-.1 G 2.965(pf)-2.965 G .465(or the time it tak)-2.965 F
.466(es to type in mo)-.1 F -.15(ve)-.15 G 2.966(sa).15 G .466
(nd/or correct mistak)-2.966 F 2.966(es. At)-.1 F .466(the WMCCC)2.966 F
-2.15 -.25(ev e)72 300 T .529(nts, the normal v).25 F .529
(alue we use is 5.)-.25 F .528(Playing on a serv)5.528 F(er)-.15 E 3.028
(,t)-.4 G .528(his is not needed, as it is not needed if you are)-3.028
F(playing Crafty yourself.)72 312 Q 3.067(37. perf This)72 336 R .568
(command is primarily used in optimizing Crafty)3.067 F 3.068(,o)-.65 G
3.068(rt)-3.068 G 3.068(ot)-3.068 G .568(est the speed of the mo)-3.068
F .868 -.15(ve g)-.15 H(enerator).15 E .06(and Mak)72 348 R(eMo)-.1 E
-.15(ve)-.15 G(\(\)/UnMak).15 E(eMo)-.1 E -.15(ve)-.15 G .06
(\(\) on dif).15 F .059(ferent platforms.)-.25 F .059(It produces tw)
5.059 F 2.559(or)-.1 G .059(esults, the mo)-2.559 F -.15(ve)-.15 G 2.559
(si).15 G 2.559(tc)-2.559 G .059(an generate)-2.559 F .171
(per second, and the mo)72 360 R -.15(ve)-.15 G 2.671(si).15 G 2.671(sc)
-2.671 G .172(an generate and mak)-2.671 F(e/unmak)-.1 E 2.672(ep)-.1 G
.172(er second.)-2.672 F .172(While this is not a perfect perfor)5.172 F
(-)-.2 E .51(mance indicator)72 372 R 3.01(,i)-.4 G 3.01(td)-3.01 G .51
(oes gi)-3.01 F .81 -.15(ve a)-.25 H 3.01(n").15 G .51
(approximation" for ho)-3.01 F 3.01(wf)-.25 G .51(ast Crafty might run.)
-3.11 F .51(In general, the higher the)5.51 F .29
(numbers, the better the program will play)72 384 R 2.79(,a)-.65 G .29
(lthough machines are certainly dif)-2.79 F 2.79(ferent. It')-.25 F 2.79
(sn)-.55 G .29(ot uncommon to)-2.79 F
(\214nd a machine that searches slo)72 396 Q(wer than another)-.25 E 2.5
(,b)-.4 G(ut has a higher "perf" v)-2.7 E(alue.)-.25 E 3.072(38. perft)
72 420 R 3.072(<depth> This)3.072 F .571
(command is generally used to con\214rm that the mo)3.072 F .871 -.15
(ve g)-.15 H .571(enerator and bitmap opera-).15 F .989(tors are w)72
432 R .989(orking properly)-.1 F 5.989(.I)-.65 G 3.489(ts)-5.989 G .989
(imply tak)-3.489 F .989(es the current position, and generates/mak)-.1
F(es/unmak)-.1 E .99(es mo)-.1 F -.15(ve)-.15 G 3.49(sa).15 G(nd)-3.49 E
.938(counts them.)72 444 R(Man)5.938 E 3.438(yp)-.15 G .938
(rograms use this from a "standard" position to mak)-3.438 F 3.437(es)
-.1 G .937(ure that their mo)-3.437 F 1.237 -.15(ve g)-.15 H(enerator)
.15 E .703(does not miss generating odd mo)72 456 R -.15(ve)-.15 G 3.203
(sl).15 G(ik)-3.203 E 3.204(ee)-.1 G .704
(npassant/promotions and also to con\214rm that the mak)-3.204 F
(e/unmak)-.1 E(e)-.1 E .267(code correctly updates the board so that th\
e totals remain constant across dif)72 468 R .267
(ferent machines and programs,)-.25 F .039
(since there is no alpha/beta or e)72 480 R -.25(va)-.25 G .039
(luation things done.).25 F .039
(if <depth> is greater than 5 or 6, it will tak)5.039 F -5.038 2.539
(ea *)-.1 H(long*)-2.539 E .416
(time, since this is basically a minimax tree tra)72 492 R -.15(ve)-.2 G
.416(rsal that will visit *e).15 F -.15(ve)-.25 G .416
(ry* node within the <depth> search).15 F(horizon.)72 504 Q 2.668
(39. pgn)72 528 R .169(<tag> <v)2.668 F 2.669(alue> This)-.25 F .169
(command is used to set the usual PGN tags to meaningful v)2.669 F 2.669
(alues. The)-.25 F(recog-)2.669 E .434(nized tags are Ev)72 540 R .433(\
ent, Site, Round, Date, White, WhiteElo, Black, BlackElo, and Result, a\
nd the tags *are*)-.15 F .01(case sensiti)72 552 R -.15(ve)-.25 G 5.01
(.T).15 G .01(he <v)-5.01 F .01(alue> can be an)-.25 F 2.51(yv)-.15 G
.011(alid input and blanks and special characters are allo)-2.76 F 2.511
(wed. Note)-.25 F(that)2.511 E .615
(the date is clearly speci\214ed in the PGN standard and must be yyyy)72
564 R .614(.mm.dd with no v)-.65 F 3.114(ariance. V)-.25 F .614
(alid results)-1.11 F(are 1-0 \(white w)72 576 Q(on\), 0-1 \(black w)-.1
E(on\), 1/2-1/2 \(dra)-.1 E(wn\) and * \(unkno)-.15 E 2.5(wn\). Some)
-.25 F -.15(ex)2.5 G(amples:).15 E(pgn Ev)72 600 Q(ent 14th W)-.15 E
(orld MicroComputer Chess Championship)-.8 E(pgn Date)72 612 Q
(1996.10.8)5 E(pgn Site)72 624 Q(Jakarta, Indonesia)5 E(pgn Round 1)72
636 Q(pgn White Crafty)72 648 Q(pgn WhiteElo 2400)72 660 Q
(pgn Black assassin)72 672 Q(pgn BlackElo 2400)72 684 Q(pgn Result 1-0)
72 696 Q .528(Setting these v)72 720 R .528
(alues will result in a proper PGN \214le when using the sa)-.25 F -2.25
-.15(veg a)-.2 H .529(me command.).15 F .529(Note that if you)5.529 F EP
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/F0 10/Times-Roman@0 SF .972(use the "read" command to input a PGN g)72
96 R .972(ame, these v)-.05 F .971(alues will be e)-.25 F .971
(xtracted from that g)-.15 F .971(ame if the)-.05 F 3.471(ya)-.15 G(re)
-3.471 E(gi)72 108 Q -.15(ve)-.25 G(n.).15 E 3.753(40. ponder)72 132 R
(of)3.753 E(f|on|<mo)-.25 E -.15(ve)-.15 G 6.253(>T).15 G 1.253
(his command serv)-6.253 F 1.253(es tw)-.15 F 3.753(op)-.1 G 3.753
(urposes. First,)-3.753 F 1.253(it can be used to disable \(of)3.753 F
1.254(f\) or)-.25 F 1.873(enable \(on\) thinking on the opponent')72 144
R 4.373(st)-.55 G 1.872(ime \(or pondering as it is called in man)-4.373
F 4.372(yp)-.15 G 1.872(rograms including)-4.372 F(Crafty)72 156 Q 3.911
(.\) T)-.65 F 1.411(urning it of)-.45 F 3.911(fw)-.25 G 1.411(ill weak)
-3.911 F 1.412(en Crafty since it will not use an)-.1 F 3.912(ym)-.15 G
1.412(achine time while w)-3.912 F 1.412(aiting on the)-.1 F .286
(opponent to mo)72 168 R -.15(ve)-.15 G 5.286(.I).15 G 2.786(ti)-5.286 G
2.786(ss)-2.786 G .286(ometimes useful, ho)-2.786 F(we)-.25 E -.15(ve)
-.25 G 1.086 -.4(r, w).15 H .286(hen playing Crafty ag).4 F .286
(ainst another computer and the)-.05 F .912(machines are not equal.)72
180 R .912(If crafty is on a f)5.912 F .913
(aster machine, and you attempt to adjust for this by gi)-.1 F .913
(ving the)-.25 F .283(opponent more time than Crafty)72 192 R 2.783(,i)
-.65 G 2.783(td)-2.783 G(oesn')-2.783 E 2.783(tw)-.18 G .282
(ork quite as e)-2.883 F .282
(xpected, because while the opponent is thinking,)-.15 F .12
(so is Crafty)72 204 R 2.62(,w)-.65 G .12(hich lets it use the e)-2.62 F
.12(xtra opponent time in an une)-.15 F .12(xpected w)-.15 F(ay)-.1 E
5.12(.I)-.65 G 2.62(ns)-5.12 G .12(uch a case, it')-2.62 F 2.62(sb)-.55
G .12(est to stop)-2.62 F(pondering in both programs.)72 216 Q .836
(If <mo)72 240 R -.15(ve)-.15 G 3.336(>i).15 G 3.336(sg)-3.336 G -2.15
-.25(iv e)-3.336 H .835(n, it directs Crafty to use that <mo).25 F -.15
(ve)-.15 G 3.335(>t).15 G 3.335(op)-3.335 G(onder)-3.335 E 3.335(,r)-.4
G .835(ather than the one from the pre)-3.335 F(vious)-.25 E 2.755
(search. Most)72 252 R .255(commonly this is used to set the right mo)
2.755 F .555 -.15(ve t)-.15 H 2.755(op).15 G .256
(onder after Crafty has been stopped and then)-2.755 F .284
(restarted, assuming that it is the opponent')72 264 R 2.784(st)-.55 G
.284(urn to mo)-2.784 F .584 -.15(ve w)-.15 H .284(hen this happens.).15
F .284(Otherwise, it is probably bet-)5.284 F .228
(ter to not try to in\215uence things, although if you are w)72 276 R
.228(atching and suddenly w)-.1 F .228(onder "what w)-.1 F .228
(ould Crafty do)-.1 F .305(if the opponent plays mo)72 288 R .605 -.15
(ve ')-.15 H .305
(X'?", you can answer this by simply typing "ponder X" and then w).15 F
.305(atching the)-.1 F 2.5(analysis. Y)72 300 R
(ou should reset the correct ponder mo)-1.1 E .3 -.15(ve a)-.15 H
(fter you do this of course.).15 E 2.875(41. reset)72 324 R 2.875
(<n> This)2.875 F .375(command lets you back up in the current g)2.875 F
.376(ame to an)-.05 F 2.876(ym)-.15 G .676 -.15(ove o)-2.876 H 2.876(fy)
.15 G .376(our choice.)-2.876 F .376(reset <n>)5.376 F .348
(backs up the g)72 336 R .348(ame to mo)-.05 F .648 -.15(ve <)-.15 H
.348(n> with the same side on mo).15 F -.15(ve)-.15 G 5.348(.I).15 G
2.848(fy)-5.348 G .348(ou w)-2.848 F .347
(ant to \214rst change the side to mo)-.1 F -.15(ve)-.15 G(,).15 E .183
(use the white/black command, then use the reset command to back up to \
the right mo)72 348 R -.15(ve)-.15 G 5.183(.N).15 G .183
(ote that you can)-5.183 F(also go forw)72 360 Q
(ard as well, just so there are mo)-.1 E -.15(ve)-.15 G 2.5(si).15 G 2.5
(nt)-2.5 G(he current g)-2.5 E(ame history)-.05 E(.)-.65 E 3.045
(42. resign)72 384 R 3.045(<n> This)3.045 F .545
(command sets the resign threshold.)3.045 F .544
(When running on ICC I typically use "resign 9")5.545 F .897
(which will mak)72 396 R 3.397(ec)-.1 G .897(rafty resign roughly \214v)
-3.397 F 3.397(em)-.15 G -.15(ove)-3.397 G 3.397(sa).15 G .897
(fter the score drops belo)-3.397 F 3.397(w-)-.25 G 3.397(9.000. F)
-3.397 F .897(or IM')-.15 F -5.896 3.397(sI c)-.55 H(hange)-3.397 E .286
(this to 6, and for GM')72 408 R 2.786(sIo)-.55 G .286
(ften use 3, so that it will resign quick)-2.786 F .285
(er and not drag a lost g)-.1 F .285(ame out unnecessar)-.05 F(-)-.2 E
(ily)72 420 Q(.)-.65 E 2.653(43. read/reada)72 444 R 2.653
([<\214lename>] This)2.653 F .154(command will read input, and e)2.653 F
.154(xtract the chess mo)-.15 F -.15(ve)-.15 G 2.654(sa).15 G .154
(nd mak)-2.654 F 2.654(et)-.1 G .154(hem to)-2.654 F .722
(set up the position at the end of the g)72 456 R 3.221(ame. It)-.05 F
.721(\214rst resets the chess board to the initial position \(read com-)
3.221 F .409(mand only\) and then e)72 468 R .409
(xtracts the PGN tags \(if present\) from the front of the input.)-.15 F
.41(The rest of the input is)5.41 F .029(parsed for chess mo)72 480 R
-.15(ve)-.15 G 2.529(s\().15 G .029
(comments and similar things are culled automatically\) and the mo)
-2.529 F -.15(ve)-.15 G 2.528(sa).15 G .028(re made and)-2.528 F .646
(added to the g)72 492 R .646(ame history)-.05 F 5.646(.O)-.65 G .646
(nce this is done, you can back up, go forw)-5.646 F .646
(ard, or play from an)-.1 F 3.147(yp)-.15 G .647(oint in the)-3.147 F
-.05(ga)72 504 S 3.388(me. If).05 F .888(you specify a <\214lename> e)
3.388 F -.15(ve)-.25 G .887
(rything is read from the \214le, otherwise it is read from the console)
.15 F -.1(ke)72 516 S(yboard.)-.05 E .32(The reada command reads mo)72
540 R -.15(ve)-.15 G .32(s, b).15 F .321
(ut appends them to the current g)-.2 F .321
(ame history/ position rather than reset-)-.05 F .535
(ting to the initial chess position.)72 552 R .535
(This lets you read in a g)5.535 F .535
(ame, then use reada to manually add some more)-.05 F(mo)72 564 Q -.15
(ve)-.15 G 2.5(st).15 G 2.5(os)-2.5 G(ee the resulting position.)-2.5 E
3.388(44. sa)72 588 R -2.25 -.15(veg a)-.2 H .888(me <\214lename>).15 F
.889(This command is used to sa)5.888 F 1.189 -.15(ve t)-.2 H .889
(he current g).15 F .889(ame in a PGN-compliant \214le with)-.05 F .469
(the PGN tags included.)72 600 R .469(Note that the def)5.469 F .469
(ault T)-.1 F 1.269 -.4(AG v)-.93 H .469(alues might not be what you w)
.15 F .469(ant if you do not either)-.1 F
(use the pgn command to set them or else input a v)72 612 Q
(alid PGN \214le with the tags already \214lled in.)-.25 E .167(Be a)72
636 R -.1(wa)-.15 G .167(re that this command doesn').1 F 2.667(tc)-.18
G .168(heck the \214lename for le)-2.667 F -.05(ga)-.15 G .168
(lity since an).05 F .168(ything goes in UNIX.)-.15 F .168(In DOS,)5.168
F .906(you might produce a bad \214lename with either too man)72 648 R
3.406(yc)-.15 G .906(haracters, too man)-3.406 F 3.406(yp)-.15 G .906
(eriods, or whate)-3.406 F -.15(ve)-.25 G 1.705 -.4(r, s).15 H 3.405(ob)
.4 G(e)-3.405 E .25(careful with the name you choose.)72 660 R .25
(Note also that this \214le will be o)5.25 F -.15(ve)-.15 G .251
(rwritten if it already e).15 F .251(xists, so be sure)-.15 F(to choose\
 a name that is not the name of a \214le that has something you conside\
r important in it.)72 672 Q 3.625(45. sa)72 696 R -.15(ve)-.2 G 1.125
(pos <\214lename>).15 F 1.124
(This command writes a single line into <\214lename> in FEN-lik)6.125 F
3.624(en)-.1 G 3.624(otation. This)-3.624 F 1.119(lets you sa)72 708 R
1.419 -.15(ve a p)-.2 H 1.119(osition, and then come back later to re-e)
.15 F 1.12(xamine it.)-.15 F -1.1(Yo)6.12 G 3.62(uw)1.1 G 1.12
(ould use the "in <\214lename>")-3.72 F
(command to input this \214le and set the position up.)72 720 Q EP
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/F0 10/Times-Roman@0 SF 3.382(46. search)72 96 R(<mo)3.382 E -.15(ve)
-.15 G 5.882(>T).15 G .882(his command allo)-5.882 F .882
(ws you to specify one particular mo)-.25 F 1.182 -.15(ve f)-.15 H .881
(or the side on mo).15 F -.15(ve)-.15 G 3.381(,a).15 G(nd)-3.381 E .574
(then when you tell Crafty to search this position, this is the only mo)
72 108 R .875 -.15(ve t)-.15 H .575(hat will be searched.).15 F .575
(This is used)5.575 F .763(internally by the annotate command, b)72 120
R .763(ut can be used to in)-.2 F -.15(ve)-.4 G(stig).15 E .763
(ate one speci\214c mo)-.05 F -.15(ve)-.15 G 5.763(.I).15 G 3.262(ft)
-5.763 G .762(he mo)-3.262 F 1.062 -.15(ve i)-.15 H 3.262(sn).15 G(ot)
-3.262 E .176(the best mo)72 132 R -.15(ve)-.15 G 2.676(,an).15 G .176
(ormal search w)-2.676 F(on')-.1 E 2.676(ts)-.18 G(ho)-2.676 E 2.676(wy)
-.25 G .176(ou wh)-2.676 F 2.676(yi)-.05 G 2.676(ti)-2.676 G 2.676(sb)
-2.676 G .176(ad, b)-2.676 F .176(ut this will.)-.2 F .176
(It is also quite a bit f)5.176 F .177(aster since)-.1 F(the other mo)72
144 Q -.15(ve)-.15 G 2.5(si).15 G 2.5(nt)-2.5 G
(he position are not searched at all.)-2.5 E 3.95(47. settc)72 168 R
(<mo)3.95 E -.15(ve)-.15 G 1.45(s> <ctime> <otime>).15 F 1.45
(This command is primarily used in tournaments, and is an error)6.45 F
(-)-.2 E(reco)72 180 Q -.15(ve)-.15 G .459(ry command.).15 F .459
(If the machine crashes and corrupts the g)5.459 F .46
(ame history \214le, frequently the operator will)-.05 F(ha)72 192 Q
.634 -.15(ve t)-.2 H 2.834(os).15 G .333(imply set the position using t\
he setboard command, and then use the settc command to restore the)
-2.834 F .996(time control v)72 204 R 3.496(alues. <mo)-.25 F -.15(ve)
-.15 G .996(s> is mo).15 F -.15(ve)-.15 G 3.497(su).15 G .997
(ntil the ne)-3.497 F .997(xt time control \(from Crafty')-.15 F 3.497
(sp)-.55 G(erspecti)-3.497 E -.15(ve)-.25 G 3.497(,b).15 G 3.497(ec)
-3.497 G(areful)-3.497 E .84(and don')72 216 R 3.34(tl)-.18 G .84
(ook at the opponent')-3.34 F 3.34(sm)-.55 G -.15(ove)-3.34 G 3.34(st)
.15 G 3.34(ot)-3.34 G .84(ime control by accident.\))-3.34 F .84
(<ctime> is minutes left on Crafty')5.84 F(s)-.55 E
(clock, <otime> is minutes left on the opponent')72 228 Q 2.5(sc)-.55 G
(lock.)-2.5 E 3.533(48. setboard)72 252 R 1.033(<FEN input>)3.533 F
1.034(This command is used to set a chess position up for analysis and \
is the pre-)6.033 F .65(ferred w)72 264 R .65
(ay to do this, rather than using the gnu EDIT interf)-.1 F 3.149
(ace. It)-.1 F .649(uses a classic F)3.149 F(orsythe-lik)-.15 E 3.149
(en)-.1 G .649(otation to)-3.149 F(encode the position and also has pro)
72 276 Q(visions for castling status and enpassant capture status.)-.15
E .678(the standard piece codes p,n,b,r)72 300 R .679
(,q,k are used to denote the type of piece on a square, upper/lo)-.4 F
.679(wer case are)-.25 F
(used to indicate the color of the piece \(uppercase=white pieces, lo)72
312 Q(wercase=black pieces\).)-.25 E .145
(the pieces are entered from the classic chess diagram')72 336 R 2.645
(so)-.55 G .145(rientation of a8 being the upper)-2.645 F .145
(-left-hand corner of)-.2 F .6
(the board, and this square is entered \214rst, follo)72 348 R .6
(wed by the remainder of the 8th rank left to right.)-.25 F 2.2 -.8
(To i)5.6 H(ndi-).8 E .195
(cate empty squares, use a number between 1 and 8 to indicate ho)72 360
R 2.695(wm)-.25 G(an)-2.695 E 2.695(ya)-.15 G .195
(djacent squares are empty)-2.695 F 5.195(.u)-.65 G .195(se a)-5.195 F
2.678(/t)72 372 S 2.678(ot)-2.678 G .178
(erminate each rank after all of the pieces for that rank ha)-2.678 F
.478 -.15(ve b)-.2 H .178(een entered.).15 F .179
(Note that you do not ha)5.178 F .479 -.15(ve t)-.2 H(o).15 E
(account for all 8 squares on a gi)72 384 Q -.15(ve)-.25 G 2.5(nr).15 G
(ank, although man)-2.5 E 2.5(yt)-.15 G(est suites do this for clarity)
-2.5 E(.)-.65 E(the follo)72 408 Q
(wing input will setup the board position that gi)-.25 E -.15(ve)-.25 G
2.5(nb).15 G(elo)-2.5 E(w:)-.25 E(k2r/ppp////Q/5PPP/7K/ B)87 432 Q(this\
 assumes that k represents a white king and -q represents a black queen\
.)72 456 Q 2.5(-k * *)127 480 R 2.5(-r * * * *)2.5 F(-p -p -p)127 492 Q
5(*****)5 G 5(********)129.5 504 S 5(********)129.5 516 S 5(********)
129.5 528 S 5(q*******)129.5 540 S 5(*****ppp)129.5 552 S 5(*******k)
129.5 564 S 3.153(*t)259.5 576 S .653
(he \214eld after the \214nal "/" should be either b or w to indi-)
-3.153 F .927(cate which side is "on mo)72 588 R -.15(ve)-.15 G 3.427
(." after).15 F .927(this side-to-mo)3.427 F 1.227 -.15(ve \214)-.15 H
.927(eld an).15 F 3.427(yo)-.15 G 3.427(ft)-3.427 G .927(he follo)-3.427
F .927(wing characters can appear to)-.25 F .776(indicate the follo)72
600 R 3.276(wing: KQ:)-.25 F .775
(white can castle king-side/queen-side/both;)3.276 F .775
(kq: same for black;)5.775 F .775(a1-h8: indi-)5.775 F
(cates the square occupied by a pa)72 612 Q
(wn that can be captured enpassant.)-.15 E 3.815(49. score This)72 636 R
1.315(command simply gi)3.815 F -.15(ve)-.25 G 3.815(st).15 G 1.316
(he positional score for the current position.)-3.815 F 1.316
(This score is from)6.316 F .367(whites perspecti)72 648 R -.15(ve)-.25
G 2.867(,s).15 G 2.867(oa+)-2.867 G .366
(score is good for white, a - score is good for black.)-.001 F .366
(Crafty also breaks the score)5.366 F(do)72 660 Q 2.169
(wn into major cate)-.25 F 2.169(gories \(from Ev)-.15 F 2.169
(aluate\(\)\) to indicate things lik)-.25 F 4.669(ep)-.1 G -.15(aw)
-4.669 G 4.67(ns).15 G 2.17(tructure, piece e)-4.67 F -.25(va)-.25 G
(luation,).25 E .802(passed pa)72 672 R .802(wns, de)-.15 F -.15(ve)-.25
G .802(lopment, and so forth.).15 F .801(Note that some of Crafty')5.801
F 3.301(se)-.55 G -.25(va)-3.551 G .801
(luation is asymmetric, so that if).25 F .227(you simply change sides w\
ith the white/black command and then enter "score" ag)72 684 R .227
(ain, you may get a dif)-.05 F(fer)-.25 E(-)-.2 E(ent v)72 696 Q 2.5
(alue. This)-.25 F(is *not* a b)2.5 E 2.5(ug. :\))-.2 F 2.724(50. sd)72
720 R 2.724(<n> This)2.724 F .224(command lets you specify a speci\214c\
 search depth limit that Crafty can not e)2.724 F 2.723(xceed. It)-.15 F
(still)2.723 E EP
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/F0 10/Times-Roman@0 SF .114(pays attention to the clock, ho)72 96 R(we)
-.25 E -.15(ve)-.25 G .914 -.4(r, s).15 H 2.614(oo).4 G .115
(ften you will use the st <n> command \(belo)-2.614 F .115
(w\) in conjunction with)-.25 F .262(this if the search is going to tak)
72 108 R 2.762(ea)-.1 G 2.761(ne)-2.762 G .261(xtended amount of time.)
-2.911 F .261(<n> is the depth \(in plies or 1/2 mo)5.261 F -.15(ve)-.15
G .261(s\) that).15 F 1.305(the search must reach.)72 120 R 1.305(Note \
that if Crafty is pondering, it still honors this limit and will stop a\
 ponder)6.305 F 1.281
(search after this depth has been completed as well.)72 132 R 1.281
(This is *not* the w)6.281 F 1.281(ay to mak)-.1 F 3.781(eC)-.1 G 1.281
(rafty play weak)-3.781 F(er)-.1 E(,)-.4 E(although this will be co)72
144 Q -.15(ve)-.15 G(red in a later section of this document.).15 E
3.017(51. sho)72 168 R 3.017(w<)-.25 G(cate)-3.017 E 3.017(gory> This)
-.15 F .518(command forces Crafty to display additional information abo\
ut certain actions)3.017 F .428(it tak)72 180 R 2.928(es. Currently)-.1
F .428(the only <cate)2.928 F .428(gory> is "book" which will mak)-.15 F
2.927(ec)-.1 G .427(rafty display information about all the)-2.927 F
.923(book mo)72 192 R -.15(ve)-.15 G 3.423(si).15 G 3.423(tf)-3.423 G
.923(ound in the database.)-3.423 F .923(More is gi)5.923 F -.15(ve)-.25
G 3.423(na).15 G .924
(bout this information in the BOOK section later in)-3.423 F
(this \214le.)72 204 Q 2.806(52. smpmt=n This)72 228 R .306(command is \
used to set the number of threads to use on a machine with more than on\
e)2.806 F(processor)72 240 Q 6.46(.F)-.55 G 1.46(or optimal performance\
, "n" should be set to the number of processors you ha)-6.61 F -.15(ve)
-.2 G 3.96(,a).15 G(lthough)-3.96 E .147(using fe)72 252 R .147
(wer will reduce the load on your machine.)-.25 F -.15(Fo)5.147 G 2.647
(rt).15 G .147(his command to w)-2.647 F .146(ork, Crafty must ha)-.1 F
.446 -.15(ve b)-.2 H .146(een com-).15 F .172(piled with SMP de\214ned.)
72 264 R .173(When compiled with SMP enabled, mt=0 ef)5.172 F(fecti)-.25
E -.15(ve)-.25 G .173(ly disables the SMP code com-).15 F(pletely)72 276
Q(.)-.65 E .718(This command also has tw)72 300 R 3.218(ot)-.1 G .717
(hat are closely related.)-3.218 F .717(smpmin and smpmax.)5.717 F .717
(Both accept single numerical)5.717 F(ar)72 312 Q 3.333(guments. smpmin)
-.18 F .833(is used to control the minimum tree depth required at a nod\
e for it to be eligible for)3.333 F .356(parallel searching.)72 324 R
.356(IE smpmin 2 says don')5.356 F 2.855(ts)-.18 G .355
(plit unless at least tw)-2.855 F 2.855(om)-.1 G .355
(ore plies are left to search belo)-2.855 F 2.855(wt)-.25 G(his)-2.855 E
2.569(node. smpmax)72 336 R .069
(sets the maximum for the same idea, is smpmax 10 says don')2.569 F
2.569(ts)-.18 G .069(plit if more than 10 plies are)-2.569 F
(remaining belo)72 348 Q 2.5(wt)-.25 G(his node.)-2.5 E 3.164(53. sn)72
372 R 3.164(<n> This)3.164 F .664
(command is similar to the sd command, b)3.164 F .663
(ut instead of setting a speci\214c search depth, it)-.2 F .53
(sets a number of nodes to search.)72 384 R .531
(Once the search has searched this number of nodes \(+ maybe one more)
5.53 F(second of searching to check the time\) the search will e)72 396
Q(xit.)-.15 E 3.41(54. st)72 420 R 3.41(<n> This)3.41 F .91
(command lets you specify a speci\214c search time limit for Crafty)3.41
F 5.909(.A)-.65 G -.05(ga)-5.909 G .909(in, this is not the).05 F .241
(preferred w)72 432 R .241(ay to set a time per mo)-.1 F -.15(ve)-.15 G
2.741(,b).15 G .241(ecause this limit is absolute and Crafty will ne)
-2.741 F -.15(ve)-.25 G 2.741(rg).15 G 2.741(oo)-2.741 G -.15(ve)-2.891
G 2.741(rt).15 G .241(his limit,)-2.741 F -2.15 -.25(ev e)72 444 T 3.436
(ni).25 G 3.436(fi)-3.436 G 3.436(ts)-3.436 G .936
(ees that it is losing or getting mated.)-3.436 F .935
(Setting the time control with the usual "time" or "le)5.935 F -.15(ve)
-.25 G(l").15 E .696(command is *much* better)72 456 R 5.696(.<)-.55 G
.696(time> is gi)-5.696 F -.15(ve)-.25 G 3.197(ni).15 G 3.197(ns)-3.197
G .697(econds, although it may also be entered as mm:ss if pre-)-3.197 F
(ferred.)72 468 Q 2.837(55. swindle)72 492 R(on|of)2.837 E 5.337(fT)-.25
G .337(his command gi)-5.337 F -.15(ve)-.25 G 2.837(sy).15 G .337
(ou control o)-2.837 F -.15(ve)-.15 G 2.837(r").15 G .337
(swindle mode.")-2.837 F .337(When on, and playing a g)5.337 F(ame,)-.05
E 1.023(Crafty will try to win dra)72 504 R 1.023(wn endings \(accordin\
g to the tablebases\) if it has winning chances \(lik)-.15 F 3.524(eK)
-.1 G 3.524(Rv)-3.524 G(s)-3.524 E .056(KB, for e)72 516 R 2.556
(xample\). This)-.15 F .055(will put up v)2.556 F .055(ery stif)-.15 F
2.555(f")-.25 G .055(resistance" to accepting the dra)-2.555 F 1.355
-.65(w, w)-.15 H .055(hile with this mode of).65 F .055(f, it)-.25 F
.762(may be v)72 528 R .763(ery easy to dra)-.15 F 3.263(wap)-.15 G .763
(osition once the tablebases say "dra)-3.263 F 3.263(wn." This)-.15 F
.763(mode is automatically turned)3.263 F("of)72 540 Q .224
(f" during analysis or when annotating a g)-.25 F .224
(ame, and is only used when actually playing a g)-.05 F .223(ame ag)-.05
F .223(ainst an)-.05 F 2.5(opponent. If)72 552 R
(there are no tablebases then this has no ef)2.5 E(fect on the g)-.25 E
(ame at all.)-.05 E 2.58(56. tags This)72 576 R .08(command will simply\
 display the current PGN tags \(you can edit them with the v)2.58 F .08
(arious PGN)-.25 F(commands\).)72 588 Q 3.06(57. test)72 612 R .56(<\
\214lename> [n] This command will run a suite of positions \(the \214le\
 must be in "Crafty" format as)3.06 F -.15(ex)72 624 S .532
(plained belo).15 F .532(w\) and produce a summary of ho)-.25 F 3.032
(wm)-.25 G(an)-3.032 E 3.032(yi)-.15 G 3.032(tg)-3.032 G .532
(ot right, wrong, etc.)-3.032 F .532(It uses the time per mo)5.532 F
-.15(ve)-.15 G 1.258(you set with the \(typically\) st <n> command.)72
636 R 1.257(The optional parameter [n] is the "early e)6.258 F 1.257
(xit" counter)-.15 F 6.257(.I)-.55 G(f)-6.257 E .455
(Crafty \214nds, and holds the solution mo)72 648 R .755 -.15(ve f)-.15
H .455(or n iterations, it will terminate the search.).15 F 2.955(Iu)
5.455 G .455(se this to mak)-2.955 F 2.955(ea)-.1 G .517
(win at chess run tak)72 660 R 3.016(e<1)-.1 G 3.016(5m)-3.016 G .516
(inutes, e)-3.016 F -.15(ve)-.25 G 3.016(nt).15 G .516
(hough the time per position is set to 1 minute, by setting n to 2.)
-3.016 F .683(After tw)72 672 R 3.183(oc)-.1 G .683
(orrect iterations, Crafty goes on to the ne)-3.183 F .684(xt problem.)
-.15 F -.15(Fo)5.684 G 3.184(ra).15 G .684
(bsolutely correct results, this is not)-3.184 F .925
(advisable as it could ob)72 684 R .925
(viously change its mind later on, b)-.15 F .924
(ut for performance analysis, this sa)-.2 F -.15(ve)-.2 G 3.424(sal).15
G .924(ot of)-3.424 F(time.)72 696 Q(The test suite contains the follo)
72 720 Q(wing lines:)-.25 E(\(this is a sample from my test suite for W)
5 E(in At Chess.\))-.4 E EP
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/F0 10/Times-Roman@0 SF(title w)72 96 Q(ac299)-.1 E
(setboard 1n2rr2/1pk3pp/pNn2p2/2N1p3/8/6P1/PP2PPKP/2RR4 w)72 108 Q
(solution Nca4)72 120 Q(title w)72 144 Q(ac300)-.1 E
(setboard b2b1r1k/3R1ppp/4qP2/4p1PQ/4P3/5B2/4N1K1/8 w)72 156 Q
(solution g6)72 168 Q(end)72 192 Q .322(The title command simply displa\
ys this message in the log \214le so you can look at the output and \
\214gure out)72 216 R(which position it goes with.)72 228 Q
(This is optional, b)5 E(ut useful.)-.2 E
(The setboard command sets the position as e)72 252 Q(xplained before.)
-.15 E .883(The solution command gi)72 276 R -.15(ve)-.25 G 3.383(st).15
G .883(he set of solution mo)-3.383 F -.15(ve)-.15 G 3.382(s\().15 G
.882(one or more mo)-3.382 F -.15(ve)-.15 G 3.382(st).15 G .882
(hat are separated by blanks\))-3.382 F 1.57
(and/or a set of "anti-solution" mo)72 288 R -.15(ve)-.15 G 4.07(s\().15
G(mo)-4.07 E -.15(ve)-.15 G 4.07(st).15 G 1.571
(hat must not be played to count the position as correct.\))-4.07 F
("anti-solution" mo)72 300 Q -.15(ve)-.15 G 2.5(sa).15 G
(re simply follo)-2.5 E(wed by a "?" character)-.25 E 2.5(,f)-.4 G(or e)
-2.5 E(xample:)-.15 E(solution Bxa7?)72 324 Q .856
(The solution command supplies a set of k)72 348 R 1.156 -.15(ey m)-.1 H
-.15(ove).15 G .856(s, and then starts the search.).15 F .856
(If, after the search termi-)5.856 F .152(nates, one of the k)72 360 R
.452 -.15(ey s)-.1 H .152(olution mo).15 F -.15(ve)-.15 G 2.652(sw).15 G
.152(as chosen \(or none of the anti-solution mo)-2.752 F -.15(ve)-.15 G
2.653(sw).15 G .153(ere chosen\) the posi-)-2.653 F
(tion is counted as correct.)72 372 Q(The \214nal line should be "end" \
although end-of-\214le or EOF will also be detected in this case.)72 396
Q 2.62(57. time)72 420 R(CPU|elapsed|<v)2.62 E 2.62(alues> This)-.25 F
.12(command controls whether the program uses CPU time or w)2.62 F
(all-clock)-.1 E .248(time for timing.)72 432 R .249
(for tournament play)5.249 F 2.749(,i)-.65 G 2.749(ti)-2.749 G 2.749(ss)
-2.749 G .249(afer to use w)-2.749 F .249
(all-clock timing, for testing it may be more consis-)-.1 F(tent to use\
 CPU timing if the machine is used for other things concurrently with t\
he tests being run.)72 444 Q
(time is also used to set the basic search timing controls.)72 468 Q
(the general form of the command is as follo)5 E(ws:)-.25 E(time nmo)87
492 Q -.15(ve)-.15 G(s/ntime/[nmo).15 E -.15(ve)-.15 G
(s/ntime]/[increment]).15 E(nmo)72 516 Q -.15(ve)-.15 G .32
(s/ntime represents a traditional \214rst time control when nmo).15 F
-.15(ve)-.15 G 2.819(si).15 G 2.819(sa)-2.819 G 2.819(ni)-2.819 G(nte)
-2.819 E .319(ger representing the number)-.15 F .53(of mo)72 528 R -.15
(ve)-.15 G 3.03(sa).15 G .53(nd ntime is the total time allo)-3.03 F .53
(wed for these mo)-.25 F -.15(ve)-.15 G 3.03(s. the).15 F .53
([optional] nmo)3.03 F -.15(ve)-.15 G .53(s/ntime is a traditional).15 F
.999(secondary time control.)72 540 R .999(increment is a feature relat\
ed to ICS play and emulates the Fischer clock where)5.999 F
(<increment> is added to the time left after each mo)72 552 Q .3 -.15
(ve i)-.15 H 2.5(sm).15 G(ade.)-2.5 E .365(as an alternati)72 576 R -.15
(ve)-.25 G 2.865(,n).15 G(mo)-2.865 E -.15(ve)-.15 G 2.865(sc).15 G .366
(an be "sd" which represents a sudden death time control of the remaind\
er of the)-2.865 F -.05(ga)72 588 S .942(me played in ntime.).05 F .941
(the optional secondary time control can be a sudden-death time control\
, as in the)5.941 F(follo)72 600 Q(wing e)-.25 E(xample:)-.15 E
(time 60/30/sd/30)92 624 Q 1.876(this sets 60 mo)72 648 R -.15(ve)-.15 G
4.376(si).15 G 4.376(n3)-4.376 G 4.376(0m)-4.376 G 1.876(inutes, then g)
-4.376 F 1.876(ame in 30 additional minutes.)-.05 F 1.876
(an increment can be added if)6.876 F(desired.)72 660 Q(One \214nal e)72
684 Q(xample is the follo)-.15 E(wing:)-.25 E(time sd/15)92 708 Q EP
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/F0 10/Times-Roman@0 SF .95(which is a simple g)72 96 R .95
(ame/15 setting.)-.05 F .95
(This command can also be used to perform the same function as the)5.95
F("le)72 108 Q -.15(ve)-.25 G(l" command.).15 E -.15(Fo)5 G 2.5(re).15 G
(xample, to set up a classic ICS 2 12 g)-2.65 E(ame, the follo)-.05 E
(wing w)-.25 E(ould w)-.1 E(ould w)-.1 E(ork:)-.1 E(time sd/2/12)92 132
Q 3.086(59. trace)72 156 R 3.086(<n> This)3.086 F .586
(command is used to mak)3.086 F 3.086(ec)-.1 G .586
(rafty display the tree as it searches a position.)-3.086 F .586
(Due to the)5.586 F .343
(incredible speed at which this program can search, ho)72 168 R(we)-.25
E -.15(ve)-.25 G 1.142 -.4(r, t).15 H .342
(his is less than useful since it can sw).4 F .342(amp an)-.1 F(y)-.15 E
(kno)72 180 Q(wn display dri)-.25 E -.15(ve)-.25 G 2.5(ra).15 G(nd mak)
-2.5 E 2.5(et)-.1 G(hings scroll impossibly f)-2.5 E(ast.)-.1 E 1.037(A\
lso note that this command usually is disabled, because Crafty is gener\
ally compiled with the -DF)72 204 R(AST)-.74 E .547(\215ag, which remo)
72 216 R -.15(ve)-.15 G 3.047(st).15 G .547
(he trace output code from the search to mak)-3.047 F 3.047(et)-.1 G
.546(hings slightly f)-3.047 F(aster)-.1 E 5.546(.Y)-.55 G .546
(ou will ha)-6.646 F .846 -.15(ve t)-.2 H(o).15 E .78
(recompile, without the -DF)72 228 R(AST)-.74 E 3.28(,i)-.74 G 3.28(fy)
-3.28 G .78(ou w)-3.28 F .78(ant to use this.)-.1 F(It')5.78 E 3.28(su)
-.55 G .78(tility is limited, e)-3.28 F .78(xcept for deb)-.15 F .78
(ugging, an)-.2 F(y-)-.15 E -.1(wa)72 240 S -.65(y.).1 G 3.078
(60. usage)72 264 R .578(<n> is simply a w)3.078 F .578
(ay to modify Crafty')-.1 F 3.078(st)-.55 G .578
(ime usage to \214t your tastes.)-3.078 F -1.1(Yo)5.578 G 3.078(uc)1.1 G
.578(an "suggest" a time)-3.078 F 1.044(limit with an)72 276 R 3.544(yo)
-.15 G 3.544(ft)-3.544 G 1.044(he options discussed pre)-3.544 F
(viously)-.25 E 3.544(,b)-.65 G 1.044(ut if you use an)-3.744 F 1.044
(ything other than the "st" command,)-.15 F .356
(Crafty will do its best to use time as you suggest, b)72 288 R .356
(ut it also anticipates that it will sa)-.2 F .656 -.15(ve s)-.2 H .355
(ome time by pon-).15 F .884
(dering, etc., and will therefore be more aggressi)72 300 R 1.184 -.15
(ve a)-.25 H 3.384(tt).15 G .884(rying to use time.)-3.384 F .884
(if <n> is a positi)5.884 F 1.184 -.15(ve i)-.25 H(nte).15 E(ger)-.15 E
3.384(,i)-.4 G 3.384(ti)-3.384 G(s)-3.384 E(tak)72 312 Q .923(en as a p\
ercentage and crafty will compute the time limit it thinks is appropria\
te for the current clock)-.1 F .726
(settings, then increase this limit by this percentage \(50 w)72 324 R
.726(ould mak)-.1 F 3.226(ei)-.1 G 3.226(tt)-3.226 G(ak)-3.226 E 3.226
(e1)-.1 G .726(.5 times longer than normal.\))-3.226 F(-50 w)72 336 Q
(ould mak)-.1 E 2.5(ei)-.1 G 2.5(tt)-2.5 G(ak)-2.5 E 2.5(e1)-.1 G
(/2 the time it w)-2.5 E(ould normally tak)-.1 E(e.)-.1 E .1
(Crafty adjusts the usage internally based on time left, opponent')72
360 R 2.6(st)-.55 G .1(ime left, ho)-2.6 F 2.6(wq)-.25 G .1
(uickly or slo)-2.6 F .1(wly the oppo-)-.25 F(nent is mo)72 372 Q
(ving, etc.)-.15 E(Further modifying things with this is dangerous, b)5
E(ut possible.)-.2 E 2.807(61. whisper/kibitz)72 396 R 2.807(<n> These)
2.807 F .307(commands are used to control what Crafty will whisper or k\
ibitz on a chess)2.807 F(serv)72 408 Q(er)-.15 E 5.834(.T)-.55 G .833(h\
e options are \(1\) only whispers or kibitzes mate announcements; \(2\)\
 adds time, score, depth to)-5.834 F .507(the pre)72 420 R .507
(vious option, b)-.25 F .507(ut no PV or mo)-.2 F -.15(ve)-.15 G 3.007
(s. \(3\)).15 F .507(adds the PV)3.007 F 5.507(.\()-1.29 G .508
(4\) adds book mo)-5.507 F .808 -.15(ve i)-.15 H .508
(nformation to the output.).15 F .737(The remaining tw)72 432 R 3.236
(oo)-.1 G .736
(ptions generate a lot of output and should be used with caution.)-3.236
F .736(\(5\) displays the PV)5.736 F .075
(after each iteration completes.)72 444 R 2.575(Iu)5.075 G .076
(se this when using my custom interf)-2.575 F .076
(ace to let Crafty observ)-.1 F .076(e/comment on)-.15 F -.05(ga)72 456
S 1.528(mes in progress on ICC.).05 F 1.528(Noise can be used to pre)
6.528 F -.15(ve)-.25 G 1.527(nt shallo).15 F 4.027(ws)-.25 G 1.527
(earches from generating output and)-4.027 F -.1(ke)72 468 S .263
(eping "noise" do).1 F .263(wn on the g)-.25 F .263(ames being w)-.05 F
2.764(atched. \(6\))-.1 F .264(basically will whisper/kibitz nearly e)
2.764 F -.15(ve)-.25 G .264(rything you).15 F 1.303
(see on the console from a search, each PV when it changes, f)72 480 R
1.302(ail highs and f)-.1 F 1.302(ail lo)-.1 F 1.302(ws, etc.)-.25 F
3.802(As)6.302 G(igni\214cant)-3.802 E(amount of output that should be \
carefully weighed before turning it "loose.")72 492 Q 4.5
(62. xboard This)72 516 R 2.001(command turns on Xboard/W)4.501 F 2.001
(inBoard compatibility mode, and mak)-.4 F 2.001(es Crafty beha)-.1 F
-.15(ve)-.2 G(some)72 528 Q .138(what lik)-.25 F 2.638(eG)-.1 G 2.638
(nuChess. This)-2.638 F .137
(is designed to be used *only* when Crafty is interf)2.638 F .137
(acing with Xboard/W)-.1 F(in-)-.4 E 2.607(Board. Crafty)72 540 R .107
(will not w)2.607 F .107(ork with these tw)-.1 F 2.607(oG)-.1 G .107
(UIs without this option, and really w)-2.607 F(on')-.1 E 2.608(tw)-.18
G .108(ork v)-2.708 F .108(ery well with)-.15 F
(this option if it is not connected to one of them.)72 552 Q 3.336
(63. There)72 576 R .836(are other commands that are not documented.)
3.336 F(The)5.835 E 3.335(ya)-.15 G .835
(re part of the xboard protocol and really)-3.335 F .091
(should not be used by the normal user)72 588 R 5.091(.Y)-.55 G .092
(ou can \214nd all the commands in option.c should you be interested.)
-6.191 F(Opening Book Setup and Usage)223.84 600 Q
(----------------------------)241.38 612 Q(Crafty uses tw)72 636 Q 2.5
(op)-.1 G(re-compiled opening books, called "book.bin" and "books.bin".)
-2.5 E .209(The \214le book.bin is usually b)72 660 R .209
(uild from a lar)-.2 F .209(ge te)-.18 F .209
(xt \214le containing PGN g)-.15 F .209(ames, often tak)-.05 F .208
(en from collections)-.1 F .063(of GM g)72 672 R 2.564(ames. Building)
-.05 F .064(book.bin is a simple e)2.564 F -.15(xe)-.15 G .064
(rcise and requires nothing other than the ra).15 F 2.564(wi)-.15 G .064
(nput \214le you)-2.564 F .06(are going to use.)72 684 R .06(Generally \
this will be either medium.zip or the set of four \214les lar)5.06 F .06
(ge[1-4].zip, all of which)-.18 F
(are stored on the ftp machine ftp.cis.uab)72 696 Q(.edu/pub/h)-.4 E
(yatt/.)-.05 E 4.472 -.8(To c)72 720 T 2.872
(reate the \214le book.bin, you need a PGN g).8 F 2.873
(ame collection that is a *real* PGN-compliant \214le.)-.05 F EP
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/F0 10/Times-Roman@0 SF(Supposing this \214le is called "lar)72 96 Q
(ge.pgn" you w)-.18 E(ould use the follo)-.1 E(wing command:)-.25 E
(book create lar)72 120 Q(ge.pgn <m> [n] [wpct])-.18 E .163
(The only thing you ha)72 144 R .463 -.15(ve t)-.2 H 2.663(os).15 G .163
(upply is <m>, a number indicating ho)-2.663 F 2.663(wm)-.25 G(an)-2.663
E 2.663(ym)-.15 G -.15(ove)-2.663 G 2.663(sf).15 G .163(rom each g)
-2.663 F .163(ame are to be)-.05 F 1.938
(stored in the book.bin database.)72 156 R 4.439(It)6.939 G 1.939
(ypically use 60, which stores the \214rst 60 mo)-4.439 F -.15(ve)-.15 G
4.439(sf).15 G 1.939(rom each g)-4.439 F(ame.)-.05 E 1.293(Increasing t\
his number slightly increases the probability that Crafty will stay in \
book longer)72 168 R 3.792(,b)-.4 G 1.292(ut it also)-3.992 F 1.064
(increases the probability that it will follo)72 180 R 3.564(wag)-.25 G
1.064(ame too f)-3.614 F(ar)-.1 E 3.564(,s)-.4 G 3.564(ot)-3.564 G 1.064
(hat it be)-3.564 F 1.065(gins to reach positions where the)-.15 F(mo)72
192 Q 2.258 -.15(ve a)-.15 H 1.957
(ctually played might not be the best mo).15 F -.15(ve)-.15 G 4.457(,l)
.15 G 1.957(etting it f)-4.457 F 1.957(all into a bad hole.)-.1 F 1.957
(Increasing this also)6.957 F
(increases the size of the database as well.)72 204 Q -1.1(Yo)72 228 S
2.631(uc)1.1 G .131(an decrease the size of the book, and also reduce t\
he number of ugly mo)-2.631 F -.15(ve)-.15 G 2.631(sb).15 G 2.631(ys)
-2.631 G .131(pecifying <n>, which)-2.631 F 1.862(says that unless a mo)
72 240 R 2.162 -.15(ve i)-.15 H 4.362(sp).15 G 1.862
(layed in at least N g)-4.362 F 1.862(ames, the mo)-.05 F 2.161 -.15
(ve i)-.15 H 4.361(sd).15 G 4.361(iscarded. This)-4.361 F 1.861
(will substantially)4.361 F 1.492
(decrease the size of the book.bin \214le, and also eliminate single g)
72 252 R 1.492(ame mo)-.05 F -.15(ve)-.15 G 3.992(st).15 G 1.492
(hat often ha)-3.992 F 1.792 -.15(ve s)-.2 H(igni\214cant).15 E
(errors or blunders.)72 264 Q -1.1(Yo)72 288 S 2.507(uc)1.1 G .007(an i\
ncrease the quality of book lines by specifying <wpct> which is the "wi\
nning percentage".)-2.507 F .006(This is)5.006 F .091
(speci\214ed as a percentage of lost g)72 300 R .091
(ames, and is used to discard mo)-.05 F -.15(ve)-.15 G 2.592(st).15 G
.092(hat led to mostly losses.)-2.592 F 2.592(As)5.092 G .092(afe v)
-2.592 F(alue)-.25 E .91
(is 50, which says that if a particular opening mo)72 312 R 1.21 -.15
(ve d)-.15 H(idn').15 E 3.41(tw)-.18 G .91(in at least 50% as man)-3.41
F 3.41(yg)-.15 G .91(ames as it lost, the)-3.46 F(mo)72 324 Q .671 -.15
(ve i)-.15 H 2.871(sc).15 G 2.871(ulled. A)-2.871 F -.25(va)2.871 G .371
(lue of 100 w).25 F .371(ould mean that mo)-.1 F -.15(ve)-.15 G 2.871
(sa).15 G .371(re culled if the)-2.871 F 2.871(yp)-.15 G .371
(roduced more losses than wins,)-2.871 F
(and is really a strict criterion.)72 336 Q 2.134
(After creating book.bin, you need to create books.bin.)72 360 R 2.134
(This is a small v)7.134 F 2.133(ersion of book.bin, which is)-.15 F
.374(intended to gi)72 372 R .674 -.15(ve y)-.25 H .374
(ou more control o).15 F -.15(ve)-.15 G 2.875(rt).15 G .375(he mo)-2.875
F -.15(ve)-.15 G .375(s/openings Crafty will play).15 F 5.375(.T)-.65 G
.375(his is usually b)-5.375 F .375(uilt from the)-.2 F .569
(\214le start.pgn on the ftp machine, b)72 384 R .568
(ut you can modify this \214le to suit your taste easily)-.2 F 5.568(.T)
-.65 G 3.068(ob)-6.368 G .568(uild books.bin,)-3.268 F
(you use the follo)72 396 Q(wing command:)-.25 E
(books create start.pgn 60)72 420 Q(Ag)72 444 Q .159
(ain, 60 is what I use, b)-.05 F .159
(ut none of my start.pgn lines go an)-.2 F .159(ywhere near that man)
-.15 F 2.659(ym)-.15 G -.15(ove)-2.659 G 2.659(s. The).15 F .159
(main point)2.659 F .557
(here is that in start.pgn, you can append a "!" to an)72 456 R 3.056
(ym)-.15 G .856 -.15(ove y)-3.056 H .556(ou w).15 F .556
(ant, and when it is Crafty')-.1 F 3.056(st)-.55 G .556(urn to mo)-3.056
F -.15(ve)-.15 G 1.255(for that color)72 468 R 3.755(,i)-.4 G 3.755(tw)
-3.755 G 1.255(ill play from the set of mo)-3.755 F -.15(ve)-.15 G 3.755
(sw).15 G 1.256(ith "!" if there are an)-3.755 F 2.556 -.65(y, i)-.15 H
1.256(gnoring the rest of the book).65 F(mo)72 480 Q -.15(ve)-.15 G 2.5
(s. If).15 F(you only w)2.5 E(ant it to play 1. e4 as white, you w)-.1 E
(ould just enter the short g)-.1 E(ame:)-.05 E
([Crafty only plays 1. e4] 1. e4!)72 504 Q .431
(and you are \214nished!.)72 528 R -1.1(Yo)5.431 G 2.931(uc)1.1 G .431
(an enter as man)-2.931 F 2.931(ya)-.15 G 2.931(sy)-2.931 G .43(ou w)
-2.931 F 2.93(ant. If)-.1 F .43(on the other hand there is a mo)2.93 F
.73 -.15(ve y)-.15 H .43(ou don').15 F(t)-.18 E -.1(wa)72 540 S .319
(nt Crafty to play).1 F 2.819(,t)-.65 G .319(hen follo)-2.819 F 2.819
(wt)-.25 G .319(hat mo)-2.819 F .619 -.15(ve w)-.15 H .32
(ith a "?" and it will ne).15 F -.15(ve)-.25 G 2.82(rp).15 G .32
(lay it.)-2.82 F(Mo)5.32 E -.15(ve)-.15 G 2.82(si).15 G 2.82(nb)-2.82 G
.32(ooks.bin that are)-2.82 F(not \215agged with ! or ? don')72 552 Q
2.5(th)-.18 G -2.25 -.2(av e)-2.5 H(an)2.7 E 2.5(yi)-.15 G
(n\215uence on Crafty')-2.5 E 2.5(sc)-.55 G(hoice at all.)-2.5 E(Here')
72 576 Q 3.31(sh)-.55 G 1.31 -.25(ow t)-3.31 H .81(he \214les are used.)
.25 F .809
(When searching a position, Crafty \214rst enumerates the set of mo)5.81
F -.15(ve)-.15 G 3.309(si).15 G 3.309(tc)-3.309 G(an)-3.309 E 1.172
(\214nd in the opening database.)72 588 R 1.172
(It then does the same for the books.bin database, and performs a "mer)
6.172 F(ge")-.18 E .609(operation to combine the ? and ! \215ags...)72
600 R .608(The purpose of the books.bin \214le is to gi)5.609 F .908
-.15(ve y)-.25 H .608(ou a small database).15 F .182
(that you can easily modify)72 612 R 2.682(,r)-.65 G(eb)-2.682 E .182
(uild, and repeat this process o)-.2 F -.15(ve)-.15 G 2.682(ra).15 G
.182(nd o)-2.682 F -.15(ve)-.15 G 3.782 -.55(r. S).15 H .182
(ince it tak).55 F .182(es a fraction of a sec-)-.1 F .758
(ond to completely reb)72 624 R .758(uild this \214le, it is v)-.2 F
.757(ery easy to modify this to control what Crafty will play)-.15 F
3.257(,w)-.65 G(ithout)-3.257 E(ha)72 636 Q(ving to reb)-.2 E
(uild the lar)-.2 E(ge database.)-.18 E 1.486(One important characteris\
tic of the PGN input is the Result tag must be speci\214ed in most of t\
he lines,)72 660 R .588(because Crafty counts wins, losses and dra)72
672 R .588(ws for each book mo)-.15 F .888 -.15(ve a)-.15 H .587
(nd uses these counts with some of the).15 F(book selection options gi)
72 684 Q -.15(ve)-.25 G 2.5(nb).15 G(elo)-2.5 E -.65(w.)-.25 G(Ho)72 708
Q 2.5(wt)-.25 G(he \215ags are used.)-2.5 E EP
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/F0 10/Times-Roman@0 SF .612(The ! and ? \215ags should only appear in \
the small books.bin \214le, although there is no reason wh)72 96 R 3.113
(yt)-.05 G(he)-3.113 E 3.113(yc)-.15 G(an)-3.113 E .273
(not appear in the lar)72 108 R .273(ge \214le as well.)-.18 F -.15(Fo)
5.273 G 2.773(rt).15 G .273(his discussion, it doesn')-2.773 F 2.772(tm)
-.18 G .272(atter since Crafty tak)-2.772 F .272(es the mo)-.1 F -.15
(ve)-.15 G 2.772(sf).15 G(rom)-2.772 E(both \214les and "mer)72 120 Q
(ges" the \215ags/etc into one entry for each mo)-.18 E -.15(ve)-.15 G
(.).15 E .847(Quite simply)72 144 R 3.347(,i)-.65 G 3.347(fa)-3.347 G
1.147 -.15(ny b)-3.347 H .847(ook le).15 F -.05(ga)-.15 G 3.347(lb).05 G
.847(ook mo)-3.347 F 1.147 -.15(ve h)-.15 H .848
(as a ! \215ag, then Crafty will only play mo).15 F -.15(ve)-.15 G 3.348
(sf).15 G .848(rom the set of)-3.348 F(mo)72 156 Q -.15(ve)-.15 G 2.576
(sw).15 G .076(hich all ha)-2.576 F .376 -.15(ve t)-.2 H .076
(he ! \215ag.).15 F .076(If a mo)5.076 F .376 -.15(ve h)-.15 H .076
(as a ? \215ag, then that mo).15 F .376 -.15(ve i)-.15 H 2.576(si).15 G
.076(mmediately remo)-2.576 F -.15(ve)-.15 G 2.576(df).15 G .075
(rom the set)-2.576 F .257(of possible book mo)72 168 R -.15(ve)-.15 G
2.757(s. If).15 F .257(the only le)2.757 F -.05(ga)-.15 G 2.757(lb).05 G
.257(ook mo)-2.757 F .557 -.15(ve h)-.15 H .258
(as a ? \215ag, it will not be played as a book mo).15 F .558 -.15(ve a)
-.15 H(nd).15 E .487
(Crafty will simply pretend that it found no book mo)72 180 R -.15(ve)
-.15 G 2.987(sa).15 G .487(nd will e)-2.987 F -.15(xe)-.15 G .486
(cute a normal tree search.).15 F .486(Pretty sim-)5.486 F(ple.)72 192 Q
(Ho)72 216 Q 2.5(wt)-.25 G 2.5(oc)-2.5 G(ontrol the frequenc)-2.5 E 2.5
(yo)-.15 G 2.5(fo)-2.5 G(pening mo)-2.5 E .3 -.15(ve s)-.15 H(election.)
.15 E 2.585(An)72 240 S .585 -.25(ew f)-2.585 H .085(eature in v).25 F
.085(ersion 15.15 and be)-.15 F .085(yond allo)-.15 F .085
(ws you to append a PGN comment to an)-.25 F 2.586(ym)-.15 G .386 -.15
(ove i)-2.586 H 2.586(nat).15 G -.15(ex)-2.586 G 2.586<748c>.15 G(le)
-2.586 E .105(used to create books.bin, of the form {play nn%}.)72 252 R
.105(This will force the mo)5.105 F .405 -.15(ve i)-.15 H 2.605(tf).15 G
(ollo)-2.605 E .105(ws to be played that per)-.25 F(-)-.2 E
(centage of the time, re)72 264 Q -.05(ga)-.15 G
(rdless of the normal book-ordering v).05 E(alues based on frequenc)-.25
E 2.5(ya)-.15 G(nd so forth.)-2.5 E .021
(Note that {play 0%} will not pre)72 288 R -.15(ve)-.25 G .021(nt a mo)
.15 F .321 -.15(ve f)-.15 H .021
(rom being played at all, as this will look just lik).15 F 2.522(eam)-.1
G .322 -.15(ove w)-2.522 H(ith).15 E(no percent speci\214ed.)72 300 Q
1.6 -.8(To a)5 H -.2(vo).6 G(id playing a mo).2 E -.15(ve)-.15 G 2.5(,u)
.15 G(se the ? \215ag.)-2.5 E(Ho)72 324 Q 2.5(wd)-.25 G
(oes Crafty choose book mo)-2.5 E -.15(ve)-.15 G(s?).15 E(Crafty')72 348
Q 3.169(sb)-.55 G .669(ook selection algorithm depends on tw)-3.169 F
3.169(ou)-.1 G(ser)-3.169 E .669(-de\214ned v)-.2 F .669
(alues that can be set at an)-.25 F 3.168(yt)-.15 G .668(ime during a)
-3.168 F -.05(ga)72 360 S(me:).05 E(book random <n>)72 384 Q
(book width <w>)72 408 Q .254
(The selection algorithm \214rst \214nds the set of le)72 432 R -.05(ga)
-.15 G 2.754(lb).05 G .254(ook mo)-2.754 F -.15(ve)-.15 G 2.754(sa).15 G
2.754(sa)-2.754 G(bo)-2.754 E -.15(ve)-.15 G 5.254(.T).15 G .254
(his set will either be all ! mo)-5.254 F -.15(ve)-.15 G(s,).15 E 1.359
(or will ha)72 444 R 1.658 -.15(ve n)-.2 H 3.858(o!m).15 G -.15(ove)
-3.858 G 3.858(si).15 G 3.858(ni)-3.858 G 3.858(t. This)-3.858 F 1.358
(set is then sorted based on the setting of book random.)3.858 F(Here')
6.358 E 3.858(st)-.55 G(he)-3.858 E(options:)72 456 Q .538
(book random 0.)72 480 R .538
(This is a special case for book selection.)5.538 F .539
(Crafty simply tak)5.538 F .539(es the set of book mo)-.1 F -.15(ve)-.15
G .539(s, and).15 F 1.131(searches only these mo)72 492 R -.15(ve)-.15 G
3.631(su).15 G 1.131(sing a normal alpha/beta search, b)-3.631 F 1.13
(ut with a shorter than usual time limit.)-.2 F(It)6.13 E .437
(then plays the mo)72 504 R .737 -.15(ve t)-.15 H .437
(hat produces the best search v).15 F 2.937(alue. This)-.25 F .437
(has one serious disadv)2.937 F .438(antage in that there is)-.25 F .394
(no randomness to this at all.)72 516 R .393(It will al)5.393 F -.1(wa)
-.1 G .393(ys play the same mo).1 F .693 -.15(ve i)-.15 H 2.893(nt).15 G
.393(he same position, unless the e)-2.893 F -.25(va)-.25 G(luation).25
E .533(is modi\214ed, or the time per mo)72 528 R .833 -.15(ve i)-.15 H
3.033(sd).15 G(if)-3.033 E .533
(ferent enough to let the search \214nd a dif)-.25 F .533(ferent mo)-.25
F .833 -.15(ve f)-.15 H .533(rom the book).15 F(mo)72 540 Q .3 -.15
(ve s)-.15 H(et.).15 E .959(book random 1.)72 564 R .959
(This enables a random form of book mo)5.959 F 1.258 -.15(ve s)-.15 H
.958(election, b).15 F .958(ut you ha)-.2 F 1.258 -.15(ve a l)-.2 H .958
(ot of control o).15 F -.15(ve)-.15 G(r).15 E(ho)72 576 Q 4.343(wm)-.25
G -.15(ove)-4.343 G 4.343(sa).15 G 1.843(re randomly chosen.)-4.343 F
1.843(The mo)6.843 F -.15(ve)-.15 G 4.343(sa).15 G 1.843
(re ordered, based on 4 parameters:)-4.343 F(frequenc)6.844 E 4.344(yo)
-.15 G 4.344(fp)-4.344 G(lay)-4.344 E(,)-.65 E .374
(win/lose ratio, static e)72 588 R -.25(va)-.25 G .374
(luation and learned results.).25 F .374(Normally these are f)5.374 F
.374(actored into the v)-.1 F .373(alue used to sort)-.25 F 2.263
(the mo)72 600 R -.15(ve)-.15 G 2.263(s, based on def).15 F 2.263(ault \
settings that you can modify by using the command "bookw option N")-.1 F
("option" should be "freq", "ratio", "e)72 612 Q -.25(va)-.25 G
(l" and "learn".).25 E 2.5(Ns)5 G(hould be a number between 0 and 1.)
-2.5 E .241(Crafty \214nds the min and max v)72 636 R .241(alues for ea\
ch of the 4 parameters, and then maps this into the range 0-1000)-.25 F
1.079(for each parameter)72 648 R 6.079(.E)-.55 G 1.079
(ach parameter is multiplied by the corresponding "weight" you ha)-6.079
F 1.38 -.15(ve a)-.2 H 1.08(ssigned, and).15 F .388(this is used as a v)
72 660 R .388(alue to sort the mo)-.25 F -.15(ve)-.15 G 2.888(sf).15 G
.388(rom lo)-2.888 F 2.888(wt)-.25 G 2.888(oh)-2.888 G 2.888(igh. Note)
-2.888 F .388(that the \214rst sort v)2.888 F .387(alue is al)-.25 F -.1
(wa)-.1 G .387(ys the "play).1 F .539(percent" to mo)72 672 R .839 -.15
(ve t)-.15 H .539(hem to the top of the list.).15 F -.15(Fo)5.539 G 3.04
(rm).15 G -.15(ove)-3.04 G 3.04(sw).15 G .54(ith equal "play percent" v)
-3.04 F .54(alues, the normal sort-)-.25 F -.25(va)72 684 S .253
(lue is used as the second-le).25 F -.15(ve)-.25 G 2.753(ls).15 G .253
(ort v)-2.753 F .253(ariable \(if no mo)-.25 F -.15(ve)-.15 G 2.753(sh)
.15 G -2.25 -.2(av e)-2.753 H 2.753(ap)2.953 G .253
(lay-percent, then this second-le)-2.753 F -.15(ve)-.25 G 2.752(lv).15 G
(ari-)-3.002 E(able is the only one used, of course.\))72 696 Q 1.188
(Once Crafty has sorted the mo)72 720 R -.15(ve)-.15 G 3.688(sa).15 G
3.688(sg)-3.688 G -2.15 -.25(iv e)-3.688 H 3.688(na).25 G(bo)-3.688 E
-.15(ve)-.15 G 3.688(,i).15 G 3.688(tn)-3.688 G -.15(ex)-3.688 G 3.688
(te).15 G 1.188(xcludes an)-3.838 F 3.689(yb)-.15 G 1.189(ook mo)-3.689
F -.15(ve)-.15 G 3.689(sw).15 G 1.189(hich ha)-3.689 F 1.489 -.15
(ve 0 w)-.2 H(ins.).15 E EP
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/F0 10/Times-Roman@0 SF .591(This culls the odd lines where a player ch\
ose a bad line and lost quickly)72 96 R 5.59(.W)-.65 G .59
(ith zero wins, it will ne)-5.99 F -.15(ve)-.25 G 3.09(rb).15 G(e)-3.09
E .961(chosen, although Crafty will happily follo)72 108 R 3.462(wi)-.25
G 3.462(tf)-3.462 G .962(rom the other side.)-3.462 F 3.462(:\) This)
5.962 F .962(is not an)3.462 F .962(ywhere near perfect,)-.15 F(ho)72
120 Q(we)-.25 E -.15(ve)-.25 G .8 -.4(r, b).15 H
(ecause an opening could ha).4 E .3 -.15(ve 1 w)-.2 H
(in and 19 losses and that still w).15 E(ould stay in the list.)-.1 E
.222(If a mo)72 144 R .522 -.15(ve h)-.15 H .222(as a learned v).15 F
.221(alue of > 100, this mo)-.25 F .521 -.15(ve i)-.15 H 2.721(se).15 G
(le)-2.721 E -.25(va)-.25 G .221(ted in priority to that of a ! mo).25 F
-.15(ve)-.15 G 2.721(,s).15 G .221(ince it appears)-2.721 F
(to win material instantly)72 156 Q 5(.I)-.65 G 2.5(fav)-5 G
(alue is < -100, it is gi)-2.75 E -.15(ve)-.25 G 2.5(na?s).15 G
(ince it appears to be a lemon.)-2.5 E .426
(After this, the setting for "book width <w>" is used to k)72 180 R .427
(eep the \214rst <w> mo)-.1 F -.15(ve)-.15 G 2.927(si).15 G 2.927(nt)
-2.927 G .427(he list, after the abo)-2.927 F -.15(ve)-.15 G 1.012
(culling has been completed.)72 192 R 1.012(The smaller you mak)6.012 F
3.512(e<)-.1 G 1.012(w> the less randomness you get, b)-3.512 F 1.011
(ut the chance of)-.2 F(Crafty popping out a really bizarre book mo)72
204 Q .3 -.15(ve g)-.15 H(ets smaller as well.).15 E .311
(After sorting, the \214nal step is to fold in an)72 228 R 2.811(ym)-.15
G .311(andatory "play percent" v)-2.811 F 2.811(alues. What)-.25 F .311
(this step does is that it)2.811 F .757(\214nds all the mo)72 240 R -.15
(ve)-.15 G 3.257(si).15 G 3.257(nt)-3.257 G .757(he "playable mo)-3.257
F 1.057 -.15(ve s)-.15 H .757(et" just computed, which ha).15 F 1.057
-.15(ve n)-.2 H 3.257(op).15 G .757(ercent-to-play v)-3.257 F .757
(alue set.)-.25 F(It)5.757 E .382(sums the sort-v)72 252 R .382
(alues for these mo)-.25 F -.15(ve)-.15 G .382
(s, then adjusts the sort-v).15 F .382(alues for the other mo)-.25 F
-.15(ve)-.15 G 2.883(ss).15 G 2.883(ot)-2.883 G .383(hat their percent-)
-2.883 F(ages will be honored.)72 264 Q .072
(Once this has been done, crafty simply uses the "sort v)72 288 R .071
(alue" for each mo)-.25 F .371 -.15(ve t)-.15 H 2.571(oc).15 G .071
(ompute a total for all mo)-2.571 F -.15(ve)-.15 G(s.).15 E .177(It the\
n generates a random number between 1 and this limit, and chooses the m\
o)72 300 R .477 -.15(ve t)-.15 H .177(hat this probability dis-).15 F
(trib)72 312 Q(ution matches.)-.2 E(This will certainly e)5 E -.2(vo)
-.25 G(lv).2 E 2.5(eo)-.15 G -.15(ve)-2.65 G 2.5(rt).15 G(ime as ne)-2.5
E 2.5(wi)-.25 G(deas are de)-2.5 E -.15(ve)-.25 G(loped.).15 E -.15(Fo)
72 336 S 3.349(rm).15 G 3.349(yp)-3.349 G .849
(lay on ICC, I use book random 1, and book width 5 normally)-3.349 F
3.349(,a)-.65 G .849(lthough for titled players this is)-3.349 F .54
(reduced to book width 3.)72 348 R -.15(Fo)5.54 G 3.04(rc).15 G .541(om\
puters, I reduce this further to 2, to try to play reasonable openings \
and)-3.04 F(cull the g)72 360 Q(ambits and things that don')-.05 E 2.5
(tw)-.18 G(ork out.)-2.6 E(Ho)72 384 Q 2.5(wd)-.25 G
(oes book learning w)-2.5 E(ork and ho)-.1 E 2.5(wc)-.25 G
(an I share learned results?)-2.5 E 3.943(1. *all*)72 408 R 1.443
(of crafty')3.943 F 3.943(s")-.55 G 1.443(learned kno)-3.943 F 1.442
(wledge" is in the book.bin \214le.)-.25 F 1.442(It k)6.442 F 1.442
(eeps the learned v)-.1 F 1.442(alue and learned)-.25 F .414
(count right in the book \214le for speed.)72 420 R -1.1(Yo)5.414 G
2.914(uc)1.1 G(an')-2.914 E 2.914(tm)-.18 G .414
(odify it, although "sho)-2.914 F 2.914(wb)-.25 G .414(ook" will mak)
-2.914 F 2.914(ec)-.1 G .414(rafty display)-2.914 F(all the book stuf)72
432 Q 2.5(fb)-.25 G(efore it mak)-2.5 E(es a mo)-.1 E -.15(ve)-.15 G(.)
.15 E 3.206(2. the)72 456 R .706(book.lrn \214le has tw)3.206 F 3.206
(op)-.1 G 3.206(urposes: \(a\))-3.206 F .706(to serv)3.206 F 3.206(ea)
-.15 G 3.205(sal)-3.206 G .705(og for your prying e)-3.205 F .705
(yes, so you can see what it')-.15 F(s)-.55 E .012(learned, ag)72 468 R
.012(ainst whom, and what the score w)-.05 F .012
(as that got its attention in the \214rst place.)-.1 F .012(The v)5.012
F .012(alues on the end)-.25 F
(of each book line, inside the {} characters are as follo)72 480 Q(ws:)
-.25 E({v)82 492 Q 1.703(alue, depth, rating_dif)-.25 F 1.703
(ference} v)-.25 F 1.703(alue is the v)-.25 F 1.703(alue of the "k)-.25
F -.15(ey)-.1 G 4.202("s).15 G 1.702
(earch that comes from the \214rst 10)-4.202 F(mo)72 504 Q -.15(ve)-.15
G 2.849(so).15 G .349(ut of book.)-2.849 F(it')5.349 E 2.849(si)-.55 G
2.849(nc)-2.849 G(entipa)-2.849 E .349(wns, and + is good - is bad.)-.15
F .35(depth is the depth the search reached at this)5.35 F("k)72 516 Q
-.15(ey)-.1 G 3.151("p).15 G .651
(osition, the deeper the search, the more the v)-3.151 F .651
(alue is "trusted.")-.25 F(rating_dif)5.65 E .65(ference is crafty')-.25
F 3.15(sr)-.55 G .65(ating -)-3.15 F(opponent')72 528 Q 3.08(sr)-.55 G
.58(ating a ne)-3.08 F -.05(ga)-.15 G(ti).05 E .88 -.15(ve v)-.25 H .58
(alue means pay more attention to the score since the opponent is bette\
r than)-.1 F(crafty)72 540 Q 2.973(,ap)-.65 G(ositi)-2.973 E .773 -.15
(ve v)-.25 H .473(alue means to tak)-.1 F 2.973(et)-.1 G .473
(he score with a grain of salt, because the opponent w)-2.973 F .472
(as weak)-.1 F .472(er than)-.1 F(Crafty)72 552 Q(.)-.65 E -1.1(Yo)72
576 S 3.544(uc)1.1 G 1.044(an delete this \214le at an)-3.544 F 3.544
(yt)-.15 G 1.044(ime, and it has no ef)-3.544 F 1.045(fect on learning.)
-.25 F 1.045(As I mentioned, the learning tak)6.045 F(es)-.1 E .943(pla\
ce in book.bin... this is mainly for you to peek at if you are interest\
ed.)72 588 R(Ho)5.942 E(we)-.25 E -.15(ve)-.25 G 1.742 -.4(r, t).15 H
.942(his is the "portable).4 F .437
(learning data \214le" also, and can be gi)72 600 R -.15(ve)-.25 G 2.937
(nt).15 G 2.937(oo)-2.937 G .437(thers to import into their crafty)
-2.937 F 2.937(,w)-.65 G .437(here it will af)-2.937 F .437
(fect the open-)-.25 F .341(ing book just lik)72 612 R 2.841(et)-.1 G
.341(heir crafty had played the openings and got the same scores.)-2.841
F .341(There are tw)5.341 F 2.841(ow)-.1 G .341(ays to use)-2.941 F
(such "lrn" \214les:)72 624 Q 2.567(1. "import)72 648 R .067
(<\214lename>" will read <\214lename> and import the kno)2.567 F .068
(wledge therein into your book.bin.)-.25 F .068(Since I)5.068 F .614
(use the same learning code as is used when playing g)72 660 R .614
(ames, this information also gets appended to *your*)-.05 F .548
(book.lrn \214le as well, so that your book.lrn al)72 672 R -.1(wa)-.1 G
.548(ys re\215ects *e).1 F -.15(ve)-.25 G .548
(rything* your program has learned, so long).15 F .696(as you don')72
684 R 3.196(te)-.18 G -.15(ve)-3.446 G 3.196(rr).15 G(emo)-3.196 E .996
-.15(ve t)-.15 H .696(his \214le.).15 F .696(It w)5.696 F .696
(ould be a mistak)-.1 F 3.196(et)-.1 G 3.196(ou)-3.196 G .696
(se this command on your o)-3.196 F .696(wn book.lrn \214le,)-.25 F
(because the things w)72 696 Q
(ould get counted twice, which might or might not be a good thing.)-.1 E
2.688(2. "import)72 720 R .188
(<\214lename> clear" will read <\214lename\) and import the kno)2.688 F
.188(wledge as abo)-.25 F -.15(ve)-.15 G 2.688(,b).15 G .189
(ut \214rst clears *all*)-2.888 F EP
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/F0 10/Times-Roman@0 SF .817(learned results from book.bin.)72 96 R .817
(you will w)5.817 F .817
(ant to do this if you import my book.lrn, *and*, you ha)-.1 F 1.116
-.15(ve c)-.2 H(on-).15 E(trib)72 108 Q .025
(uted to my book.lrn data by sending me yours.)-.2 F(I')5.025 E .025
(ll tak)-.1 F 2.525(ec)-.1 G .025
(are of eliminating duplicates if you scre)-2.525 F 2.526(wu)-.25 G
2.526(pi)-2.526 G(n)-2.526 E .373(what you send me, b)72 120 R .373
(ut once you send me something, you run the risk of getting it "back ag)
-.2 F .373(ain" later)-.05 F 5.373(.T)-.55 G(his)-5.373 E 1.676
(is going to be a problem until e)72 132 R -.15(ve)-.25 G 1.676
(ryone gets used to sharing something that is rather "v).15 F 1.677
(apid" lik)-.25 F 4.177(et)-.1 G(his)-4.177 E("learned info" is...)72
144 Q .761(Other than that, we are no)72 168 R 3.261(w")-.25 G .761
(open for b)-3.261 F 3.261(usiness"... when)-.2 F .761(the ur)3.261 F
.761(ge strik)-.18 F .761(es you, email me your .lrn \214le, I')-.1 F
(ll)-.1 E -.1(ke)72 180 S .772(ep a lar).1 F .773
(ge master here and update it on occasion.)-.18 F .773
(Probably the best thing to do is to send me your .lrn)5.773 F .211
(and at the same *instant* delete yours.)72 192 R .211
(This will capture an)5.211 F .211
(ything learned *after* you send me the \214le, b)-.15 F(ut)-.2 E(you')
72 204 Q .283(ll get it all right back with the ne)-.1 F .283(xt v)-.15
F .283(ersion of book.lrn that I distrib)-.15 F 2.783(ute. after)-.2 F
.284(getting this ne)2.783 F 2.784(wb)-.25 G(ook.lrn)-2.784 E
(back, here')72 216 Q 2.5(sw)-.55 G(hat you should do:)-2.5 E 2.5
(1. rename)72 240 R(your old book.lrn to something else.)2.5 E(I')5 E
(ll call it "book.lrn.old" here.)-.1 E 4.559(2. cop)72 264 R 4.559(ym)
-.1 G 4.559(yb)-4.559 G 2.059(learn.dat to your machine, b)-4.559 F
2.058(ut *do not* put it in the directory with your book.bin and)-.2 F
.352(books.bin \214le because it will get confusing v)72 276 R .353
(ery quickly if you do.)-.15 F .353(put it some)5.353 F .353
(where else, because you are)-.25 F(going to remo)72 288 Q .3 -.15(ve i)
-.15 H 2.5(tq).15 G(uickly an)-2.5 E(yw)-.15 E(ay)-.1 E 5(.I)-.65 G -.1
('l)-5 G 2.5(lc).1 G(all it ne)-2.5 E -.65(w.)-.25 G(lrn for this e).65
E(xample.)-.15 E 2.5(3. import)72 312 R(ne)2.5 E -.65(w.)-.25 G
(lrn clear).65 E(import book.lrn.old)82 324 Q .139
(and you are ready to rumble ag)72 348 R 2.639(ain. The)-.05 F .139
(\214rst command clears the learned v)2.639 F .139
(alues, sucks in my ne)-.25 F 2.639(wl)-.25 G .138(earn \214le)-2.639 F
1.086(and updates e)72 360 R -.15(ve)-.25 G 3.586(rything. the).15 F
1.086(second command re-learns e)3.586 F -.15(ve)-.25 G 1.086
(rything you').15 F 1.387 -.15(ve l)-.5 H 1.087
(earned since you sent me the).15 F .227(last book.lrn \214le.)72 372 R
.226(After doing this your book.lrn will ha)5.226 F .526 -.15(ve m)-.2 H
2.726(y.).15 G .226(lrn stuf)-2.726 F .226(f, plus your old.lrn stuf)
-.25 F .226(f, just w)-.25 F(aiting)-.1 E(to be sent to me ag)72 384 Q
(ain...)-.05 E .561(If this is confusing, I can probably add an automat\
ic command to do all of this by renaming book.lrn, etc.)72 408 R
(Hopefully this is not too error)72 420 Q(-prone for the time being an)
-.2 E(yw)-.15 E(ay)-.1 E(...)-.65 E(What is this ne)72 444 Q 2.5(wP)-.25
G(osition Learning I')-2.5 E .3 -.15(ve h)-.5 H(eard about?).15 E .73
(Crafty no)72 468 R 3.23(wh)-.25 G .73
(as a "permanent" hash table that is k)-3.23 F .729(ept from g)-.1 F
.729(ame to g)-.05 F 3.229(ame. A)-.05 F .729
(position gets into this "hash)3.229 F(\214le" when Crafty e)72 480 Q
-.15(xe)-.15 G(cutes a search and the search v).15 E
(alue is signi\214cantly lo)-.25 E(wer than the last search v)-.25 E
(alue.)-.25 E .197(When this happens, Crafty stores the current informa\
tion for this position in the permanent hash \214le, which)72 504 R .24
(can hold up to 65536 positions.)72 516 R .24
(Once it \214lls up, the positions are replaced on a FIFO basic al)5.24
F -.1(wa)-.1 G .24(ys k).1 F(eeping)-.1 E(the most recent 64K entries.)
72 528 Q .439(Each time crafty starts a search, the positions/scores fr\
om this \214le are stuf)72 552 R .44(fed into the normal transposition)
-.25 F .752(table, and used during the search just lik)72 564 R 3.252
(ea)-.1 G 1.052 -.15(ny o)-3.252 H .752(ther table entry).15 F 5.752(.H)
-.65 G(ere')-5.752 E 3.252(sh)-.55 G 1.252 -.25(ow i)-3.252 H 3.252(th)
.25 G 3.252(elps: In)-3.252 F 3.252(ag)3.252 G .752(ame that w)-3.302 F
(as)-.1 E(played, the follo)72 576 Q(wing mo)-.25 E -.15(ve)-.15 G 2.5
(sa).15 G(nd scores were found by crafty \(playing white\):)-2.5 E 2.5
(1. Ng5)72 600 R 2.5(\(+.277\) h6)2.5 F 2.5(2. Nh7)2.5 F 2.5
(\(+.321\) Kg8)2.5 F 2.5(3. Qh5)2.5 F 2.5(\(+.133\) Qg7)2.5 F 2.5
(4. Ng5)2.5 F(\(-2.122\) hxg5)2.5 E 2.004
(So, the knight got trapped at h7, and at mo)72 624 R 2.305 -.15(ve 4 c)
-.15 H 2.005(rafty disco).15 F -.15(ve)-.15 G 2.005
(red that this is gross and "learns" this).15 F(result/position.)72 636
Q 2.311 -.8(We p)72 660 T .711(lay the e).8 F .711(xact same g)-.15 F
.711(ame ag)-.05 F 3.211(ain: e)-.05 F .711(xcept that tw)-.15 F 3.211
(ot)-.1 G .71(hings can happen here.)-3.211 F .71
(It might be that Ng7 is the)5.71 F .399
(*only* square the knight can mo)72 672 R .699 -.15(ve t)-.15 H 2.899
(oh).15 G .399(ere, which means this whole thing is forced.)-2.899 F
.399(the \214rst search w)5.399 F(ould)-.1 E(\214nd:)72 684 Q 3.088
(1. Ng5)72 708 R .588
(\(-2.122\) if the search can reach 8 plies deep, which happens e)3.088
F -.15(ve)-.25 G 3.088(ni).15 G 3.088(n5s)-3.088 G .588(econd g)-3.088 F
3.087(ames. It')-.05 F 3.087(sl)-.55 G(earned)-3.087 E .023
(that Ng5 is bad.)72 720 R .024(It stores *this* position in the perman\
ent hash \214le also, and the ne)5.023 F .024(xt time you try this same)
-.15 F EP
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/F0 10/Times-Roman@0 SF .447(trap, it will disco)72 96 R -.15(ve)-.15 G
2.947(r4).15 G .447(-5 mo)-2.947 F -.15(ve)-.15 G 2.947(se).15 G .447
(arlier that if the knight gets to g5 it is in trouble.)-2.947 F .446
(Each g)5.446 F .446(ame will di)-.05 F -.15(ve)-.25 G -.18(rg).15 G(e)
.18 E(from the \214rst g)72 108 Q(ame 3-4 mo)-.05 E -.15(ve)-.15 G 2.5
(se).15 G(arlier)-2.5 E 5(.S)-.55 G(imple and ef)-5 E(fecti)-.25 E -.15
(ve)-.25 G(.).15 E 3.507(2. Ng5)72 132 R 1.007
(might not be forced, and if not, it kno)3.507 F 1.007
(ws Ng5 loses a piece for a pa)-.25 F 1.008
(wn, so it will promptly play)-.15 F(something else, which is e)72 144 Q
(xactly what is desired.)-.15 E .81(This is implemented with tw)72 168 R
3.31(o\()-.1 G .81(count 'em, tw)-3.31 F .81(o\) \214les.)-.1 F .81
(One \214le "position.bin" is a binary \214le that contains)5.81 F .03
(the hash table entries, and it right at one me)72 180 R -.05(ga)-.15 G
.03(byte in size, *max*.).05 F .03
(\(16 bytes per hash entry X 65536 entries)5.03 F 2.517(=e)72 192 S .017
(xactly one me)-2.667 F .017(g, b)-.15 F .017(ut I ha)-.2 F .317 -.15
(ve 8 ex)-.2 H .016
(tra bytes for the FIFO queue implementation and to see ho).15 F 2.516
(wm)-.25 G(an)-2.516 E 2.516(ye)-.15 G(ntries)-2.516 E
(are currently in the \214le if it is not full.)72 204 Q 1.773(The seco\
nd \214le is "position.lrn" and is, you guessed it, a \214le that can b\
e shared with others, just lik)72 228 R(e)-.1 E 3.08(book.lrn. It)72 240
R .58(contains all information needed to reconstruct the position, the \
score, the depth, etc.)3.08 F .58(and also)5.58 F
(included the pgn tags for who w)72 252 Q(as what color and when the g)
-.1 E(ame w)-.05 E(as played...)-.1 E 1.099
(This data can be imported with the ne)72 276 R 3.599(w")-.25 G 1.1
(import" command \(the old book learn <\214lename> is no longer)-3.599 F
.104(around\) which will import either book.lrn type data or position.l\
rn type data and can tell them apart without)72 288 R .005(your ha)72
300 R .005(ving to do an)-.2 F 2.505(ything. The)-.15 F .005
(<clear> option is still there, should you w)2.505 F .006
(ant to use it, and simply remo)-.1 F -.15(ve)-.15 G(s).15 E(the positi\
on.lrn and position.bin \214les before starting the import process for \
position learning.)72 312 Q .976(This can be turned of)72 336 R .975
(f, if you lik)-.25 F .975
(e, by checking out the "learn" command, which gi)-.1 F -.15(ve)-.25 G
3.475(sy).15 G .975(ou the ability to)-3.475 F .035(turn of)72 348 R
2.535(fb)-.25 G .036(ook learning \(as it presently w)-2.535 F .036
(orks\), position learning, and the ne)-.1 F .036
(xt book learning stage which will)-.15 F(add to the book in addition t\
o learning which book lines are good and bad.)72 360 Q(What is this ne)
72 384 Q 2.5(w")-.25 G(result" learning?)-2.5 E .386(Result learning w)
72 408 R .386(orks just lik)-.1 F 2.886(en)-.1 G .386
(ormal book learning, e)-2.886 F .386
(xcept that if Crafty is checkmated or resigns, it will)-.15 F .548(ste\
p back through the book line to \214nd the last point where it had more\
 than one mo)72 420 R .848 -.15(ve t)-.15 H 3.048(oc).15 G .549
(hoose from.)-3.048 F(It)5.549 E(will \215ag the mo)72 432 Q .3 -.15
(ve i)-.15 H 2.5(tc).15 G(hose as "ne)-2.5 E -.15(ve)-.25 G 2.5(rp).15 G
(lay ag)-2.5 E(ain".)-.05 E .151
(This handles the case where the \214rst ten non-book mo)72 456 R -.15
(ve)-.15 G 2.651(sp).15 G .151(roduce reasonable scores, b)-2.651 F .151
(ut the position is one)-.2 F .398(that Crafty simply can')72 468 R
2.898(th)-.18 G .398(andle v)-2.898 F .398(ery well.)-.15 F .399
(If it loses such a g)5.398 F .399(ame, it will still v)-.05 F .399
(ary the ne)-.25 F .399(xt time this open-)-.15 F 1.843
(ing is played, as otherwise it w)72 480 R 1.842
(ould possibly repeat the same opening, and w)-.1 F 1.842
(ould certainly repeat the)-.1 F(remainder of the g)72 492 Q(ame.)-.05 E
.33(All three learning modes are turned on by def)72 516 R .33
(ault, although an)-.1 F 2.83(yo)-.15 G 2.83(ft)-2.83 G .33
(hem can be disabled with the appropri-)-2.83 F
(ate command option to "learn".)72 528 Q EP
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