Author: Vincent Diepeveen
Date: 16:10:49 08/21/02
Go up one level in this thread
On August 21, 2002 at 18:11:26, Uri Blass wrote: >[D]4r3/p2q2k1/2pp4/2p4b/QrP1P2b/1P1P1Pp1/P3N1R1/3RN2K w - - 0 36 bm Qa5 > >Questions: >1)Is Qa5 winning? >2)Is Qa5 the only win? this position is not interesting IMHO, usually engines make way bigger mistakes than such ones. >I will be happy if somebody with fast hardware can analyze for some hours >the possible alternatives Qa3 Qa5 and Qa6. > >Movei played Qa3 that is probably enough only for a draw > > >[D]6k1/6r1/2Q3N1/2p5/2P1P1qb/1P1P2p1/P5R1/3b2K1 w - - 0 46 bm Qa8+ Qe8+ >am Qd5+,Nxh4 > >Movei lost by Nxh4 I get draw score for Nxh4, also at bigger search depths. 00:00 125 0k 0 0 5 (2) 1 (0,0) 0.455 Ng6xh4 Qg4xh4 Qc6xc5 00:00 4800 5k 0 0 432 (2) 2 (0,7) 0.455 Ng6xh4 Qg4xh4 Qc6xc5 00:00 8721 9k 0 0 1221 (2) 3 (0,43) 0.455 Ng6xh4 Qg4xh4 Qc6xc5 00:00 23210 23k 0 0 4642 (2) 4 (1,85) 0.377 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h7 Qc8xc5 00:00 38323 38k 0 0 14946 (2) 5 (2,147) 0.527 Ng6xh4 Qg4xh4 Qc6xc5 Rg7-h7 Kg1- f1 00:00 58975 59k 0 0 38334 (2) 6 (5,221) 0.771 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-f7 Qc8x c5 Bd1-f3 Qc5-f5 Qh4-f6 Qf5xf6 Kf7xf6 ++ c6-d5 00:00 58143 58k 0 0 45352 (2) 6 (5,239) 0.798 Qc6-d5 Kg8-h7 Ng6xh4 Qg4xh4 Qd5x c5 Rg7-f7 d3-d4 00:01 72993 73k 0 0 83942 (2) 7 (5,304) 0.001 Qc6-d5 Kg8-h7 Ng6xh4 Qg4xh4 Qd5x c5 Rg7-f7 b3-b4 Qh4-f4 ++ g6-h4 00:02 69057 69k 0 0 145711 (2) 7 (33,412) 0.350 Ng6xh4 Qg4xh4 Qc6xc5 Rg7-f7 Qc 5-b6 Qh4-f4 Qb6-g6 Rf7-g7 Qg6-e8 Kg8-h7 00:03 81023 81k 0 0 279530 (2) 8 (53,576) 0.017 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h7 Qc 8xc5 Rg7-f7 b3-b4 Bd1-f3 Qc5-d5 00:07 102641 103k 0 0 722596 (2) 9 (100,851) 0.001 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h7 Q c8-f5 Kh7-g8 Qf5xc5 Rg7-f7 Qc5-b6 Qh4-f4 Qb6-d8 Rf7-f8 b3-b4 00:11 127475 127k 0 0 1420078 (2) 10 (115,1099) 0.000 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h 7 Qc8-f5 Kh7-g8 Qf5-c8 00:21 148919 149k 0 0 3148165 (2) 11 (132,1359) 0.000 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h 7 Qc8-f5 Kh7-g8 Qf5-c8 00:34 160815 161k 0 0 5474162 (2) 12 (147,1673) 0.000 Ng6xh4 Qg4xh4 Qc6-c8 Kg8-h 7 Qc8-f5 Kh7-g8 Qf5-c8 00:59 170556 171k 0 0 10062816 (2) 13 (173,2077) 0.000 Ng6xh4 Qg4xh4 Qc6-c8 Kg8- h7 Qc8-f5 Kh7-g8 Qf5-c8 02:12 174082 174k 0 0 23052044 (2) 14 (206,2599) 0.000 Ng6xh4 Qg4xh4 Qc6-c8 Kg8- h7 Qc8-f5 Kh7-g8 Qf5-c8 >Again I will be happy if someone can analyze the positions for many hours to >find if the bm draw when the am lose. > >Uri
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