Im just testing different books for Crafty. I am using the book.bin and bookc.bin from Bob Hyatt's site. Also I've build my own book based on a collection of GM games. In my first tests I found out that Crafty was performing slightly better playing _without_(!) the computer book. To test this I played about 100 games at fast time controls. All games was played on my Dual Cel 2*520 MHz. Ponder was on. Crafty.rc included "book random 1", "book width 2" and "computer" allways. All 3+4 and some 5-men tablebases were in use. Hashsize was 24+8 MB.
For my personal amusement and to test the different books against strong opponents I played a little tournament after this. Time control was game in 30 minutes for each engine. Computer was the same, each engine got about 32 MB hash. Crafty_hb was using the book.bin from Bob Hyatt's site, Crafty_hbc was using the bookc.bin also, Crafty_nb was using my book. Amy07_4 is the executable dated 000327 from Dann Corbit's site. Comet_B18-2 was used because of the popup window B20 is opening at the beginning of a match. This tournament was controlled by a *.bat file and I wasn't around all the time when Comet started to close that window. Here are the results:
No. Name 1 2 3 4 5 6 7 8 9 10 Score
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1 Amy07_4 xx =0 11 0= == == 11 11 10 00 10.0
2 AnMon506 =1 xx 0= 0= 10 == 11 00 =1 11 10.0
3 Comet_B18-2 00 1= xx 00 0= 00 00 00 =0 10 3.5
4 Crafty1710_hb 1= 1= 11 xx =1 == 11 =0 10 11 13.0
5 Crafty1710_hbc == 01 1= =0 xx == =1 0= 01 =0 8.5
6 Crafty1710_nb == == 11 == == xx 11 10 01 1= 11.5
7 Gromit_30 00 00 11 00 =0 00 xx 01 11 0= 6.0
8 LG2000V25 00 11 11 =1 1= 01 10 xx 0= 00 9.5
9 Phalanx22 01 =0 =1 01 10 10 00 1= xx 00 7.5
10 SOS_991103 11 00 01 00 =1 0= 1= 11 11 xx 10.5
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No. Name Win Draw Loss Unf. Score Games % SOP
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1 Crafty1710_hb +10 =6 -2 *0 13.0 18 72.2% 154.0
2 Crafty1710_nb +7 =9 -2 *0 11.5 18 63.9% 157.0
3 SOS_991103 +9 =3 -6 *0 10.5 18 58.3% 159.0
4 Amy07_4 +7 =6 -5 *0 10.0 18 55.6% 160.0
4 AnMon506 +7 =6 -5 *0 10.0 18 55.6% 160.0
6 LG2000V25 +8 =3 -7 *0 9.5 18 52.8% 161.0
7 Crafty1710_hbc +4 =9 -5 *0 8.5 18 47.2% 163.0
8 Phalanx22 +6 =3 -9 *0 7.5 18 41.7% 165.0
9 Gromit_30 +5 =2 -11 *0 6.0 18 33.3% 168.0
10 Comet_B18-2 +2 =3 -13 *0 3.5 18 19.4% 173.0
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Start Elo: 2400
Program Score % Av.Op. Elo + - Draws
1 Crafty1710_hb : 13.0/ 18 72.2 2386 2552 145 149 33.3 %
2 Crafty1710_nb : 11.5/ 18 63.9 2392 2491 157 104 50.0 %
3 SOS_991103 : 10.5/ 18 58.3 2396 2455 167 165 16.7 %
4 Amy07_4 : 10.0/ 18 55.6 2398 2437 172 129 33.3 %
4 AnMon506 : 10.0/ 18 55.6 2398 2437 172 129 33.3 %
6 LG2000V25 : 9.5/ 18 52.8 2400 2420 178 156 16.7 %
7 Crafty1710_hbc : 8.5/ 18 47.2 2404 2385 100 178 50.0 %
8 Phalanx22 : 7.5/ 18 41.7 2408 2350 165 167 16.7 %
9 Gromit_30 : 6.0/ 18 33.3 2414 2294 198 153 11.1 %
10 Comet_B18-2 : 3.5/ 18 19.4 2427 2180 224 135 16.7 %
Total Games: 90
White Wins: 34 (37.8%)
Black Wins: 31 (34.4%)
Draws: 25 (27.8%)
Unfinished: 0 (0.0%)
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Amy was really surprising me. It seems to be much stronger than I expected. I'm going to play another tournament with same settings but some changes: Comet_B18 will be replaced by DerBringer. B20 is stronger but I cannot use it when I'm not around. Amy will be updated by the new version which is using some assembly routines.
BTW: does anybody know what is necessary to build a bookc.bin for Crafty properly? "Bookc create ..." seems to be not enough. I have allready downloaded the brainy.zip file from Dann's site but I don't know what to do with it

To download the games please visit my games archive.
Best wishes
Volker
my games archive