Author: blass uri
Date: 02:29:59 04/08/00
I am interested in tactical blunders of chess programs.
In part of the cases there are tactical blunders because of bugs or tactical
holes that the programmers do not know about.
I think that analyzing ssdf games can help programmers to know about tactical
holes.
I think that it is possible to use the analysis to generate a test suite when
the target is to avoid tactical mistakes.
I analyzed one game by hiarcs7.32 to discover blunders of at least 0.99 pawn(5
minutes per move, check blunder only on pIII450).
Hiarcs did not discover in this case tactical blunders (what hiarcs described as
tactical blunders 25...b4 and 28...Qb8 could not change the result of the game
and the line of 25...c3 26.bxc3 is not best for white and better is 26.Qh6 but
hiarcs needs almost an hour to discover the line 25...c3 26.Qh6).
Here is the game analyzed by hiarcs7.32
[Event "SSDF 40-2"]
[Site "DK-Albertslund"]
[Date "2000.01.02"]
[Round "1"]
[White "Junior 6.0 K6-2 450, 100MB."]
[Black "Shredder 2 P200MMX, 24+8 MB."]
[Result "1-0"]
[ECO "D44"]
[WhiteElo "2706"]
[BlackElo "2498"]
[Annotator "Test: HC Lykke"]
[PlyCount "58"]
[EventDate "2000.01.02"]
{99MB, jbook.ctg. P200MMX} 1. d4 {0} 1... Nf6 {2} 2. c4 {0} 2... e6 {2} 3. Nc3
{0} 3... d5 {2} 4. Nf3 {0} 4... dxc4 {2} 5. e4 {0} 5... Bb4 {2} 6. Bg5 {0} 6...
b5 {2} 7. a4 {0} 7... c6 {251} 8. e5 {0} 8... h6 {226} 9. exf6 {0} 9... hxg5 {
461} 10. fxg7 {0} 10... Rg8 {195} 11. h4 {0} 11... gxh4 {178} 12. Rxh4 {0}
12... Nd7 {last book move 194} 13. axb5 {0.32/16 683} 13... cxb5 {300} 14. Rh8
{0.60/17 446} 14... Ke7 {2} 15. Qd2 {0.59/15 283} 15... f6 {143} 16. d5 {
0.81/15 144} 16... Rxh8 {182} 17. gxh8=Q {1.02/14 29} 17... Qxh8 {277} 18. dxe6
{1.06/16 1} 18... Nb6 {190} 19. Nd4 {1.37/14 186} 19... Bxc3 {44} 20. Qxc3 {
1.67/15 800} 20... Bxe6 {150} 21. Qe3 {1.67/15 1} 21... Qc8 {202} 22. Nf5+ {
2.27/15 67} 22... Kd8 {334} 23. Rd1+ {1.87/15 1} 23... Bd7 {253} 24. Be2 {
1.86/16 1} 24... Qc7 {731} 25. Nd6 {2.73/15 1} 25... b4 {165} ({
11.13 Hiarcs 7.32:} 25... c3 26. bxc3 {4.73/10}) 26. Bf3 {6.69/14 492} 26... c3
{87} 27. Qd4 {7.60/14 313} 27... Ke7 {602} 28. Qxb4 {7.99/15 1} 28... Qb8 {617}
({#13 Hiarcs 7.32:} 28... Kd8 29. Nb7+ Qxb7 30. Bxb7 c2 31. Rc1 Rb8 32. Be4 Be8
33. Qd6+ Nd7 34. Rxc2 Rb6 35. Qc7+ Ke7 36. Qxa7 {10.73/9}) 29. Nf5+ {
13.17/13 252} 29... Kd8 {adjud. 107} 1-0
Uri
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