Author: Heiner Marxen
Date: 10:11:53 02/12/01
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On February 12, 2001 at 07:29:02, leonid wrote: >Hi! > >If you like to solve a mate, try this position: > >[D]rQ1Q1rnk/q4qbp/3nQqbB/q1Q1NnNn/5QQ1/b2Q4/1QB3Q1/1K1R3R w - - > >Please, indicate your result. > >In dispite that this position is not that deep and difficult, if your program >don't know how to deel with white crowd it could be in serious trouble. My was >deadly slow in searching for mate even by selective search. Reason - white have >142 initial moves and goes beyond 150 during the search for mate. Good challenge >for every chess program! > >Thanks for responding, >Leonid. Hmmm, not deep? Not difficult? "There is no mate in 6" by Chest burns nearly 18 minutes on a K6-3/400 with 50MB hash. I have started depth=7, but I expect at least 3 hours to complete it, and may be more. At least I can confirm the 142 initial legal moves. Heiner
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