Author: José Carlos
Date: 10:42:17 08/13/01
Go up one level in this thread
On August 13, 2001 at 12:06:59, Uri Blass wrote: >On August 13, 2001 at 09:43:13, José Carlos wrote: > >>On August 13, 2001 at 07:43:09, Uri Blass wrote: >> >>>On August 13, 2001 at 07:14:11, Eduard Nemeth wrote: >>> >>>>On August 13, 2001 at 06:44:56, Eduard Nemeth wrote: >>>> >>>>>Fritz 6b (Engine from 200.12.16) played strong, but he chrashed me not! >>>>> >>>>>Endposition: >>>>> >>>>>[D]6k1/1bb2rp1/p3r2p/2p1n1pP/PpPpPpP1/1P1P1P1R/2BN1N2/1K5R w - - >>>>> >>>>>Fritz played no more a5. He makes a draw with Kg8 and a score +1.80 for >>>>>him!? >>>>> >>>>> >>>>>[Event "Blitz 30'"] >>>>>[Site "?"] >>>>>[Date "2001.??.??"] >>>>>[Round "?"] >>>>>[White "Nemeth,Eduard"] >>>>>[Black "Fritz 6b,64MB,P600"] >>>>>[ECO "C20"] >>>>>[Result "1/2-1/2"] >>>>> >>>>>1. e4 e5 2. Qf3 Nc6 3. c3 Nf6 4. Bc4 Na5 5. Bb5 a6 6. Ba4 >>>>>b5 7. Bc2 c5 8. b3 d5 9. d3 d4 10. c4 Nc6 11. a3 Bd6 12. g3 >>>>>O-O 13. h3 Be6 14. Bg5 Qa5+ 15. Bd2 Qb6 16. Bc1 Bc7 17. Qe2 >>>>>b4 18. a4 Qa5 19. f3 Nh5 20. Qf2 Ne7 21. g4 Nf4 22. Bxf4 >>>>>exf4 23. Nd2 Rad8 24. O-O-O Rfe8 25. Ne2 Qb6 26. Kb2 Rd7 >>>>>27. h4 Qc6 28. h5 f6 29. Rde1 h6 30. Rhg1 Qb6 31. Qh2 Qd6 >>>>>32. Ra1 Nc6 33. Qg2 Qe5 34. Qf1 Rde7 35. Rg2 Bc8 36. Ng1 >>>>>Bb7 37. Nh3 Kh7 38. Nf2 Kh8 39. Qh1 Re6 40. Qh4 Kh7 41. Rh1 >>>>>Qg5 42. Qxg5 fxg5 43. Rgg1 R6e7 44. Rh3 Ne5 45. Rgh1 Rd8 >>>>>46. R3h2 Re6 47. Kc1 Kg8 48. Kd1 Rdd6 49. Kc1 Re8 50. Kd1 >>>>>Rde6 51. Kc1 Kh7 52. Kd1 R8e7 53. Kc1 Kh8 54. Kb1 Kg8 >>>>>55. Kc1 Rf6 56. Kd1 Re8 57. Kc1 Rf7 58. Kb1 Rfe7 59. Kc1 >>>>>Bc6 60. Kb2 Kh7 61. Kc1 Rf8 62. Kb2 Ree8 63. Kb1 Re6 >>>>>64. Kc1 Rf7 65. Kb2 Rfe7 66. Rh3 Rd7 67. Kc1 Re8 68. Kd1 >>>>>Rde7 69. Kc1 Rd8 70. Kb2 Ra8 71. Kb1 Bb7 72. Ka2 Re6 >>>>>73. Kb2 Rae8 74. Kc1 Bc6 75. Kb2 Kg8 76. Kc1 Kh8 77. Kd1 >>>>>Ba8 78. Kc1 R8e7 79. R1h2 Kg8 80. Kb2 Bb7 81. Kc1 Bc6 >>>>>82. Kb2 Re8 83. Kb1 Rf8 84. Kb2 Bb7 85. Kb1 Kh8 86. Kb2 >>>>>Rfe8 87. Kb1 Kh7 88. Kb2 Ba8 89. Kb1 R8e7 90. Kb2 Bb7 >>>>>91. Kb1 Rf7 92. Rh1 Kg8 1/2-1/2 >>>>> >>>>>Eduard >>>> >>>>Fritz 6b makes a draw with 50-rules move 92...Kg8 (score was -1.75!), I can this >>>>not understand? >>> >>>Fritz simply does not consider the 50 move rule in the evaluation. >>>I believe that it helps him to search more nodes per second >>>and the demage is not big because in most of the cases >>>when fritz needs a pawn move or a capture in order to avoid the >>>50 move rule draw, >>>avoiding the 50 move rule draw is only going to make the game longer >>>without changing the result. >>> >>>It is not clear if knowledge about the 50 move rule is productive >>>in terms of rating points. >>> >>>Uri >> >> Not very often, but sure it is, specially if you're the weak side, and find a >>way to block pawns or something like that. But, in terms of rating points, must >>be very small difference. >> However, computing it is almost free: increment an integer value and testing >>if >100. I don't think this costs even 1 node per minute to Fritz. > >Do you evaluate checkmate after exactly 100 plies without conversion as a draw >or as a checkmate? >Note that checkmate after exactly 100 plies is a win and not a draw. I don't catch the checkmate then, because I detect a checkmate when I want to move, have no legal moves, and I'm in check (this is, the next ply). I don't care anyway. My program is too weak to bother with such a rare case. José C. >You cannot use only the number of plies because using 101 is also not correct >and if there is no checkmate after 100 plies it is a draw and a capture in the >next move is not relevant. > >Uri >> >> José C.
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