Author: Paul
Date: 07:23:52 04/17/01
Go up one level in this thread
On April 17, 2001 at 10:14:17, Heiner Marxen wrote: >On April 16, 2001 at 10:32:20, Paul wrote: > >>On April 16, 2001 at 09:13:33, leonid wrote: >> >>>Hello! >>> >>>If you like to solve a mate then this could be the one: >>> >>>[D]1Q1r2kr/1nq1q1pp/q1b1n1N1/3NbQq1/QB4BQ/q3Q3/3q1q2/1K1Q4 w - - >>> >>>Please indicate your result. >>> >>>Don't forget name your program and hardware. >>> >>>Thanks, >>>Leonid. >> >>I do! :) These are the results from Amsterdam, a mate in 9: >> >>00:38 WM9 09 Ngxe7+ Qgxe7 Nxe7+ Qxe7 Qxe6+ Qff7 Qxf7+ Qxf7 Qbxd8+ Nxd8 Qxd8+ >>Qxd8 Qxd8+ Be8 Qdxe8+ Qxe8 Qxe8# > >Actually, there are two key moves for a mate in 9 according to Chest >(K7/600, 350MB hash, 33 seconds): > >Ndxe7+ =*= Nxe7+ Qxe7 Qxe6+ Qff7 Qxf7+ Qxf7 Qhxd8+ Nxd8 Qxd8+ Qxd8 Qxd8+ Be8 >Qdxe8+ Qf8 Qxf8# > >Ngxe7+ =*= Nxe7+ Qxe7 Qxe6+ Qff7 Qxf7+ Qxf7 Qhxd8+ Nxd8 Qxd8+ Qxd8 Qxd8+ Be8 >Qdxe8+ Qf8 Qxf8# > >Chest is so fast here, because black has easy mate threats, itself. >Such threats quite effectively cut down search tree size. Chest searches >less than 2M nodes, here. > >Heiner Ok, that does it ... beaten by Chest on time also ... I quit! :) Paul
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