Author: Uri Blass
Date: 02:59:23 12/26/02
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On December 26, 2002 at 05:17:03, Sune Fischer wrote: >On December 25, 2002 at 23:23:48, Drexel,Michael wrote: > >>[D] Q2Q2Q1/1R6/3BR3/3k3N/2RB2Q1/5R2/Q2Q2Bp/3N3K w - - 0 1 >> >>Problem: >>White to move >>If white gives check it has to be mate in one. >>Find a legal position with the highest number of possible checks. >> >>I discovered this 5 years ago. Took me about 16 hours to find it. >>I think it is possible to find a proof that it is not possible to find more: >> >>85 mates in one! :-) > >Are you sure, I "only" count 78 mates?? > >Mates ply 0........: 0 >Mates ply 1........: 78 >Mates ply 2........: 0 >Mates ply 3........: 468 >Mates ply 4........: 0 >Mates ply 5........: 9538 > >how did you count them? > >>I must have been crazy. > >Yes, you will fit right in here :) > >-S. modified perft of movei agree with your numbers. It counts 1380065-10084 mates at ply 7 and 0 mates in ply 8 Number of stalemates 52 at depth 1 781-52 at depth 3 12034-781 at depth 5 2095567-12034 at depth 7 Can you check that these numbers are correct? Uri
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