Author: Dieter Buerssner
Date: 09:32:13 10/22/05
Go up one level in this thread
On October 22, 2005 at 12:03:58, Günther Simon wrote: >thanks for the extra infos. I think we have to agree though, what >a significant score means here? The answer will depend on the engine and the position. >I mean every engine will show here a huge plus, but nevertheless >it will not be capable of winning the game without tablebases, >or may be even not with tablebases below 6 men? Yace showed +13 in under 1 minute, so it is capable of winning this without 6-men TVs. I never saw it to be wrong with such a huge score (not in games and not in studies). >What score could be called as likely to win the game, when really >_playing_ this position? Will > +10 be sufficient for most cases? Yes. In positions of practical games, the hugest errornos scores I remember from Yace are from wQ vs. bPa7/c7/f7/h7 type positions. These scores are lower 10. One example: [D] 8/8/6p1/6Q1/2K4p/6kP/5p2/8 b - - 0 55 [Event "?"] [Site "Beersheba ,CBM 09"] [Date "1988.??.??"] [Round "?"] [White "Kortchnoi, V."] [Black "Rechlis, G."] [WhiteElo "2640"] [BlackElo "2475"] [ECO "A15"] [Result "1/2-1/2"] 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 O-O 7. O-O c5 8. Qa4 Nc6 9. Qc4 Nxc3 10. bxc3 b6 11. Qh4 Bb7 12. Rb1 e6 13. c4 Qxh4 14. Nxh4 Rab8 15. Nf3 Nb4 16. Bb2 Rfd8 17. Bxg7 Kxg7 18. Rb2 Rd6 19. d3 Re8 20. a3 Na6 21. Ra1 e5 22. Nd2 Bxg2 23. Kxg2 f5 24. a4 Nb4 25. a5 Re7 26. f3 h5 27. h3 Kf6 28. axb6 axb6 29. Ra8 Rdd7 30. Rb1 Ra7 31. Ra1 Nc6 32. Nb1 Rxa1 33. Rxa1 Ra7 34. Rxa7 Nxa7 35. Nc3 Ke6 36. Nd5 b5 37. Nc7+ Kd7 38. Nxb5 Nxb5 39. cxb5 Kc7 40. f4 exf4 41. gxf4 h4 42. Kf2 Kb6 43. Ke3 Kxb5 44. Kd2 Kb4 45. Kc2 c4 46. Kb2 cxd3 47. exd3 Kc5 48. Kc3 Kd5 49. d4 Ke4 50. Kc4 Kxf4 51. d5 Kg3 52. d6 f4 53. d7 f3 54. d8=Q f2 55. Qg5+ 1/2-1/2 Joachim mentioned, that new Fruit has knowledge about this theme. Does it evalute the above position correctly? Regards, Dieter
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