Author: Dieter Buerssner
Date: 01:42:06 11/20/01
Go up one level in this thread
On November 19, 2001 at 16:32:15, Dan Andersson wrote:
>[D]8/6p1/k6p/8/K7/7P/8/8 b - - 0 1
>This position is interesting if you only use 3 and 4 piece TBs. Does Yace have a
>search depth limit, Dieter? Yace runs smack to ply 62 in this position. Because
>the program have to be able to evaluate this kind of position accurately.
Yes, 62 is the limit (it gives many datastructures the size of 64). Well, the
evaluation of this position of Yace is a bit embarassing - seeig +3.x for a long
time ...
Without 5-men TBs and doubling the search depth limit, I get:
22095666 3:42.9 3.17110t 1...Ka7 2. Ka5 g5 3. Kb5 h5 4. Kc5 h4 5. Kd5 g4
6. Ke4 g3 7. Kf3 Kb8 8. Ke3 Kc7 9. Kf3 Kb8H 10.
Ke3H Kc7H 11. Kf3H Kb8HR {80}
22167750 3:44.6 3.17110. 1...Ka7 2. Ka5 g5 3. Kb5 h5 4. Kc5 h4 5. Kd5 g4
6. Ke4 g3 7. Kf3 Kb8 8. Ke3 Kc7 9. Kf3 Kb8 10.
Ke3 Kc7 11. Kf3 Kb8 {80}
22494547 3:50.3 2.28111-- 1...Ka7 2. Ka5 Kb7 3. Kb5 Kc7 4. Kc5 g6 5. Kd5
Kd7 6. Ke5 Kd8 7. Kf4 Kd7 8. Kf3 Kc7 9. Kf4 Kb8
10. Kf3 Kc8 11. Ke2 Kb7 12. Ke3 g5 13. Kf3 Ka7
14. Ke2 Kb7 15. h4 g4 16. h5 g3 17. Ke3 Kb8 18.
Kf3 Kb7 19. Ke2 Ka7 20. Ke1 Ka6 21. Kf1 Ka5 22.
Ke1 Kb4 23. Kf1 Kb5 24. Ke1 Kc4 25. Kf1 Kb4 26.
Ke1 Kb5 27. Kf1 Kb6 28. Ke1 Kb7 29. Kf1 Kc7 30.
Ke1 Kc6 31. Kf1 Kb7 32. Ke1 Kb6 33. Kf1 Ka6 34.
Ke1 Ka7 35. Kf1 Kb8 36. Ke1 Kc8 37. Kf1 Kd8 38.
Ke1 Ke8 39. Kf1 Kf8 40. Ke1 Ke7 41. Kf1 Kd7 42.
Ke1 Ke6 43. Ke2 Kd6 44. Ke3 Kc5 45. Kf3 Kc6 46.
Ke2 Kd7 47. Ke3 Kd6 48. Kf3 Kc5 49. Ke2 Kb6 50.
Ke3 Kc6 51. Kf3 Kb5 52. Ke2 Kb4 53. Ke3 Kc4 54.
Kf3 Kb4 55. Ke2 Kc4 56. Ke3 Kd5 {80}
23589927 4:06.8 1.28111-- 1...Ka7 2. Ka5 Kb7 3. Kb5 Kc7 4. Kc5 Kd7 5. Kd5
Ke7 6. Ke5 Ke8 7. Kf4 Kf8 8. Ke4 Kg8 9. Ke3 Kh8
10. Kf3 Kg8 11. Ke2 Kh8 12. h4 Kg8 13. Kf2 Kh8
14. Kf3 Kg8 15. Ke2 Kh8 16. Kf2 Kg8 17. Kf3 Kh8
18. Kf4 Kg8 19. Ke4 Kf7 20. Ke3 Kf8 21. Kf3 Ke8
22. Kf4 Kd8 23. Ke4 Kc8 24. Ke3 Kb8 25. Kf3 Ka8
26. Ke4 Kb7 27. Ke5 Ka7 28. Ke4 Kb8 29. Ke3 Ka8
30. Kf3 Ka7 31. Ke2 Ka8 32. Kf2 Ka7 33. Kg2 Kb7
34. Kf3 Kb6 35. Kf4 Kb5 36. Ke4 Ka4 37. Ke3 Kb4
38. Kf4 Ka3 39. Ke4 Ka2 40. Ke3 Kb2 41. Ke4 Kb1
42. Ke3 Kc2 43. Ke4 Kb3 44. Ke3 Ka4 45. Kf3 Kb5
46. Kf4 Kc6 47. Ke4 Kd7 48. Ke3 Ke7 49. Kf3 Kd8
50. Ke2 Kc8 51. Kd2 h5 52. Kc2 g6 53. Kd2 Kb8
54. Kc2 Ka8 55. Kb2 Ka7 56. Kc2 Kb6 {80}
24675163 4:23.8 0.00111t 1...Ka7 2. Ka5 Kb7 3. Kb5 Kc7 4. Kc5 Kd7 5. Kd5
Ke7 6. Ke5 Ke8 7. Kf4 Kf8 8. Ke4 Kg8 9. Ke3 Kh8
10. Kf3 h5 11. Ke2 g6 12. Ke3 Kh7 13. Kf3 Kg7H
14. Ke3H g5H 15. Ke2H Kg6H 16. Ke3H h4H 17.
Kf3H g4+H 18. hxg4H {EGTB} 18...h3 19. g5 h2
20. Kg2! h1=Q+ 21. Kxh1! Kg7 22. g6 Kg8 23. g7
Kxg7 {No mating material} {0}
24735045 4:26.2 0.00111. 1...Ka7 2. Ka5 Kb7 3. Kb5 Kc7 4. Kc5 Kd7 5. Kd5
Ke7 6. Ke5 Ke8 7. Kf4 Kf8 8. Ke4 Kg8 9. Ke3 Kh8
10. Kf3 h5 11. Ke2 g6 12. Ke3 Kh7 13. Kf3 Kg7
14. Ke3 g5 15. Ke2 Kg6 16. Ke3 h4 17. Kf3 g4+
18. hxg4 {EGTB} 18...h3 19. g5 h2 20. Kg2!
h1=Q+ 21. Kxh1! Kg7 22. g6 Kg8 23. g7 Kxg7 {No
mating material} {0}
And keeps this until the end. The display is missing a space between the score
and the depth. KPPKP is useful for analysing (some) pawn endgames ...
Regards,
Dieter
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.