Author: Uri Blass
Date: 14:02:49 04/21/04
Go up one level in this thread
On April 21, 2004 at 16:55:17, Sune Fischer wrote: >On April 21, 2004 at 16:44:15, Gerd Isenberg wrote: > >>On April 21, 2004 at 16:11:27, Uri Blass wrote: >> >>>Here is another case when I believe that movei blundered by playing Ba7 when >>>after c5 the black bishop is a joke. >>> >>>I am surprised to see that not only movei has no sense of humor but even the >>>ssdf leader Shredder7.04(A1000, 64 mbytes hash) seems not to have it and cannot >>>find the only logical move(Bd4) even after a long time(the second possibility is >>>that I understand nothing about the position and the fact that the black bishop >>>is out of the game is not important). >>> >>>Resp 0.19 - Movei 0.08.178d >>>[D]1k1r3r/2p1n3/p1pq1p2/1pb1p3/1PP1P1pp/P2P3P/2Q1NPP1/R1BR2K1 b - b3 0 1 >>> >> >>Same for IsiChess MMX, likes Ba7 too all the time. >>I thought i recently had implemented some trapped bishob code ;-) >>Or was it already the AMD64 XMM-version which takes some more time? >> >>I guess there is probably wrong king safety compensation for the trapped bishop. >>May be the closing "c5" makes the black king safer, due to less levers but more >>rams on king related files. Other black pieces and the advanced pawns may be >>ready for a king side attack. Interesting position! >> >>Gerd > >I think the code works :) > >1 469 1 53 1...Nd5 >1 445 1 72 1...Rdf8 >1 383 1 95 1...Rdg8 >1 375 1 224 1...Bxf2+ 2.Kxf2 >1 371 1 369 1...Bxb4 >1 25 1 397 1...Bd4 >2 25 1 1117 1...Bd4 2.Nxd4 >3 25 1 1593 1...Bd4 2.Nxd4 Qxd4 >4 42 5 4237 1...Bd4 2.Nxd4 Qxd4 3.Bb2 >5 74 8 13546 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 >6 98 11 32942 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 4.d4 >7 98 18 82765 1...Bd4 2.Nxd4 Qxd4 3.Bb2 Qd7 4.d4 exd4 >8 81 33 208399 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.gxh3 Rxh3 5.Bb2 Qh2+ 6.Kf1 >9 75 60 430252 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.gxh3 Rxh3 5.Kf1 Rg8 6.c5 >10 61 135 1102037 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 4.d4 gxh3 5.cxb5 cxb5 6.dxe5 >11 56 282 2333824 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 >12 58 608 5088618 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qe6 >13 63 1233 10851144 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qe6 5.gxh3 Rxh3 6.f3 >Qf7 7.Kg2 Rdh8 >14 70 6857 55085739 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qd7 5.gxh3 Rxh3 6.Qe2 >Rg8 7.f3 Rh5 > >But you are right there is something else going on over on the white kingside. > >If I force Ba7 the score on c5 starts to drop: > >1 234 0 754 2.c5 >2 228 0 857 2.c5 Qe6 >3 208 0 1341 2.c5 Qe6 3.Qa2 >4 211 0 2504 2.c5 Qd7 3.d4 gxh3 >5 184 3 6823 2.c5 Qd7 3.hxg4 a5 4.g5 >6 184 6 20139 2.c5 Qd7 3.hxg4 a5 4.g5 axb4 >7 163 13 71345 2.c5 Qe6 3.hxg4 a5 4.g5 axb4 5.gxf6 >8 154 25 188141 2.c5 Qe6 3.hxg4 a5 4.g5 axb4 5.gxf6 b3 >9 111 81 656987 2.c5 Qe6 3.hxg4 a5 4.d4 axb4 5.axb4 Qxg4 6.Bb2 >10 104 247 2141619 2.c5 Qe6 3.hxg4 Qxg4 4.f3 Qh5 5.d4 a5 6.f4 axb4 >11 72 786 6918271 2.c5 Qd7 3.Kh2 a5 4.bxa5 gxh3 5.gxh3 Ka8 6.a4 Rhg8 7.axb5 >11 73 1372 11915791 2.hxg4 >11 85 2061 17836812 2.hxg4 Qe6 3.g5 h3 4.c5 a5 5.gxh3 Qxh3 6.Ng3 Qh2+ 7.Kf1 >axb4 >12 69 3134 27100571 2.hxg4 Qe6 3.c5 Qxg4 4.f3 Qg7 5.f4 a5 6.Kf2 axb4 7.axb4 >Qg4 >13 63 7731 66687997 2.hxg4 Qe6 3.c5 Qxg4 4.f3 Qg6 5.Kf2 a5 6.bxa5 Rhg8 7.Rg1 >Rd6 >13 64 8845 75640779 2.c5 > >-S. I do not know if there is something else but movei lost the game and I suspect that Ba7 is quilty. I think that the right plan of white is to trade all the pieces and get a winning endgame. [Event "WBEC7 2nd Division"] [Site "ATHLON-MP2200"] [Date "2004.04.20"] [Round "7.4"] [White "Resp 0.19"] [Black "Movei 0.08.178d"] [Result "1-0"] [PlyCount "189"] [EventDate "2004.??.??"] [TimeControl "40/2400:0"] 1. Nf3 Nc6 2. e4 e5 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bg4 6. h3 Bxf3 7. Qxf3 Qf6 8. Qg4 h5 9. Qg3 h4 10. Qe3 b6 11. d3 Bc5 12. Qd2 Qe6 13. O-O O-O-O 14. Qe2 Kb8 15. Na4 Bd6 16. c4 b5 17. Nc3 Bc5 18. Bg5 f6 19. Bc1 Ne7 20. Qc2 Qd6 21. Rd1 g6 22. Ne2 g5 23. a3 g4 24. b4 Ba7 25. c5 Qe6 26. Kh2 Rhg8 27. Bb2 Rg6 28. f3 gxf3 29. gxf3 Rdg8 30. Rg1 Rxg1 31. Rxg1 Rxg1 32. Nxg1 Ng6 33. Bc1 Qg8 34. Be3 Ne7 35. d4 Ng6 36. Qg2 Kb7 37. d5 cxd5 38. exd5 Kb8 39. Qg4 Ne7 40. Qxg8+ Nxg8 41. Bf2 Ne7 42. d6 cxd6 43. cxd6 Nc6 44. Bxh4 f5 45. Bf6 Kc8 46. h4 Be3 47. h5 Bh6 48. Kh3 Kd7 49. Kh4 Kxd6 50. Bg5 Bg7 51. h6 Bh8 52. Be3 Bf6+ 53. Kh5 e4 54. fxe4 fxe4 55. h7 Ke6 56. Nh3 Kf5 57. Nf4 Ne5 58. Nd5 Nf7 59. Nxf6 Kxf6 60. Bd4+ Kf5 61. Bf2 Kf6 62. h8=R Nxh8 63. Bd4+ Kf5 64. Bxh8 e3 65. Bc3 Kf4 66. Kh4 Ke4 67. Kg4 Kd3 68. Be1 Ke2 69. Bg3 Kd2 70. Kf3 e2 71. Ke4 Kc2 72. Kd5 Kb2 73. Kc6 Kxa3 74. Be1 Kb2 75. Kb6 Kc2 76. Kxa6 Kd1 77. Bh4 Kd2 78. Kxb5 Kc3 79. Kc5 Kd3 80. Be1 Ke3 81. b5 Kf3 82. Bd2 Ke4 83. Kc4 Ke5 84. b6 Kd6 85. Kb5 Kd7 86. Ka5 Kc6 87. Be1 Kd7 88. b7 Kc7 89. Ka6 Kd6 90. b8=Q+ Ke6 91. Qf4 Kd7 92. Qf6 Ke8 93. Qg7 Kd8 94. Bh4+ Ke8 95. Qe7# 1-0 Uri
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