Author: Bas Hamstra
Date: 08:36:38 01/29/02
Go up one level in this thread
I wonder what is going on here. Is the qsearch doing part of the job? There is no way I can make Tao solve this in 11 ply with normal extensions, and even with maximum extending. Mine solves it in 12 ply. This makes me kind of curious how you get this is 11 ply without mating extensions. If you turn SE off, you still get it at 11? Best regards, Bas. On January 28, 2002 at 09:20:07, Vincent Diepeveen wrote: >On January 27, 2002 at 09:09:05, Ed Schröder wrote: > >>On January 27, 2002 at 06:20:59, Bas Hamstra wrote: >> >>>[D]r2r1bk1/ppqb1ppp/2p1p3/6P1/2PPN3/PB3Q2/1P3P1P/1K1RR3 w - - Nf6!! >>> >>>Tao solves this in a couple of minutes (I believe 4 minutes to resolve the fail >>>high). But with futility pruning turned on it doesn't. I am curious how it >>>affects Fritz solution time. Fritz and CM see it pretty quick, in about 2 >>>minutes. >> >>55 seconds for Rebel Century 4 (WB), A-1400, 60 Mb hash. >> >>Ed >> >>=========================================== >> >>00:00:00.8 0,84 6 151310 Bc2 Be7 Qh5 g6 Qh6 a5 >>00:00:01.9 0,76 7 288905 Bc2 Be7 Qh5 g6 Qh6 b5 Nf6+ Bxf6 >>00:00:01.0 0,76 8 728845 Bc2 Be7 Qh5 g6 Qh6 b5 Nf6+ Bxf6 >>00:00:03.5 0,67 9 1881667 Bc2 Be7 Qh5 g6 Qh6 Qf4 Re3 Bf8 >>00:00:12.6 0,73 10 7730501 Bc2 Be7 Re3 b5 Qh5 g6 Qh6 Qf4 >>00:00:25.5 0,75 11 17509807 Bc2 Be7 Re3 c5 >>00:00:45.6 0,77 11 31601510 g6 hxg6 Ng5 f6 >>00:00:55.7 0,77 11 38494175 Nf6+ >>00:01:20.2 1,61 11 55729659 Nf6+ gxf6 gxf6 Bh6 Re5 Kh8 Qh3 > >diep also needs 11 ply but because of lower nps it takes of course longer >to get there, bit more than a minute for fail high. research takes another >minute. > >00:05 0 0 436744 (108671) 7 -0.161 h2-h4 Bf8-e7 Ne4-c5 b7-b5 Kb1-a1 Be7-d6 Nc5-a >6 >++ f3-g4 >00:08 0 0 787005 (182417) 7 -0.074 Qf3-g4 Bd7-e8 h2-h4 b7-b6 Bb3-c2 b6-b5 c4-c5 >00:20 0 0 2031839 (863240) 8 -0.036 Qf3-g4 b7-b5 c4xb5 c6xb5 Ne4-f6 Kg8-h8 g5-g6 > Qc7xh2 g6xf7 >++ g5-g6 >00:25 0 0 2617045 (966166) 8 0.574 g5-g6 f7xg6 Ne4-g5 Bd7-c8 c4-c5 Rd8-d5 Bb3xd5 > e6xd5 >00:29 0 0 3072237 (991036) 9 0.578 g5-g6 f7xg6 Ne4-g5 Rd8-e8 c4-c5 Qc7-d8 Qf3-f7 > Kg8-h8 Ng5xe6 Qd8-e7 >00:41 0 0 4389685 (1107408) 10 0.599 g5-g6 f7xg6 Ne4-g5 Rd8-e8 d4-d5 c6xd5 Qf3-f >7 Kg8-h8 Ng5xe6 Qc7-d6 c4xd5 >01:14 0 0 8252472 (1188758) 11 0.751 g5-g6 f7xg6 Ne4-g5 Rd8-e8 d4-d5 c6xd5 c4xd5 > Kg8-h8 Qf3-h3 h7-h6 Ng5xe6 >++ e4-f6 >02:38 0 0 17103480 (2124274) 11 1.599 Ne4-f6 g7xf6 g5xf6 Bf8-h6 Re1-e4 Qc7-a5 Qf >3-h3 Qa5-f5 Qh3xh6 Qf5-g6 Qh6-f4 Kg8-f8 >03:11 0 0 20863077 (2280172) 12 1.599 Ne4-f6 g7xf6 g5xf6 Bf8-h6 Re1-e4 Qc7-a5 Qf >3-h3 Qa5-f5 Qh3xh6 Qf5-g6 Qh6-f4 Kg8-f8 >09:17 0 0 59717146 (4349876) 13 2.986 Ne4-f6 g7xf6 g5xf6 Bf8-h6 Re1-g1 Kg8-h8 Bb >3-c2 Rd8-g8 Rg1xg8 Ra8xg8 Qf3-h5 Rg8-g2 Qh5xh6 Qc7xh2 Qh6-f8 Rg2-g8 > >Note that diep has no mating extensions yet. this version only has singular >extensions and check extensions and a few other stupid extensions that might >not give anything here. > >>>Best regards, >>>Bas.
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