Author: leonid
Date: 14:16:45 05/30/01
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On May 30, 2001 at 17:05:30, Heiner Marxen wrote: >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. This surprise me the most! >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: Probably my program had worst result possible. It took for mine 2 hours and 12 min to say that there are no mate in 7. I speak about brute froce search. Only at night (now I can't occupy my computer for so long) will try to see 8 moves. It should take at least few hours. Cheers, Leonid. >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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