Author: leonid
Date: 09:17:00 04/15/01
Go up one level in this thread
On April 15, 2001 at 08:20:55, Gian-Carlo Pascutto wrote: >On April 14, 2001 at 10:37:06, leonid wrote: > >>Hello! >> >>If you like to solve one mate (or if you want to selebrate Passover by >>crucifying your solfware) then this position is just for you: >> >>[D]1qRr2bk/Q1P1q1bq/4Qn1N/3qq1Qn/KRQ1Qq1N/B2B4/6Qq/2q3r1 w - - >> > >Not found by Sjeng using proof number search within reasonable time. > >Now trying with proof number 2 search... > >-- >GCP What is the "proof number search"? The most probable this position don't have mate in 11 moves. Only 12 is still under question mark. I tried 11 moves during the night and probably was very close to official response "no" when I disconnected search. I needed my computer. Big jump in branching factor, starting with move 10, make very slow search for mate (by brute force) 11 moves deep. Leonid.
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