Author: Heiner Marxen
Date: 14:05:30 05/30/01
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On May 30, 2001 at 06:47:33, leonid wrote: >Hello! > >If you like to solve "usual" mate then try this: > >[D]q2k2q1/2nqn2b/1n1P1n1b/2rnr2Q/1NQ1QN1Q/3Q3B/2RQR2B/Q2K2Q1 w - - > >Take care, if you will go to solve this position on some good professional >program. There could be some problem. Just before coming here, I printed this >position for me on one excellent program. Then, just by curiosity, I pushed >button to make program look into it. Instantly, some kind of error massage came >as response. Initial number of moves for this position is not even 100 to run >program wild. I have no idea about the possible reason. You have posted wilder positions, already, this one starts with 98 legal moves. Chest was not fast, compared with the other programs. In 1.6 hours on a K7/600 with 350MB hash it found two key moves that lead to mate-in-8: Qxa8+ Nbxa8 dxe7+ Kc8 Qgxc5 Kb8 Q4b5+ Nxb5 Qcxb5+ Nab6 Qhxe5+ Ka8 Qc6+ =*= Qa6# dxe7+ Kc8 Qxa8+ Nbxa8 Qgxc5 Kb8 Q4b5+ Nxb5 Qcxb5+ Nab6 Qhxe5+ Ka8 Qc6+ =*= Qa6# The hash here did not help as much: Chest estimates a factor 1.73. Cheers, Heiner
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