Author: Heiner Marxen
Date: 06:40:31 07/06/01
Go up one level in this thread
On July 03, 2001 at 05:47:02, Angrim wrote: >On July 02, 2001 at 15:10:18, leonid wrote: > >>Hi! >> >>This mate could be fun to resolve: >> >>[D]R1N1N2k/2qqqqbb/1nQ2q1r/2Q2qQ1/1nQ2q2/1QQQQq1r/1BB5/K5QR w - - >> >>Please indicate your result. According to Chest there is no mate in 10 moves (K7/600, 350MB hash, 12.8 hrs). >>Thanks, >>Leonid. >proved that move g5xg7 wins, 11 turns >PN2:2020634 evals, 39222 expands, 13.15 seconds > >pv starts with g5xg7+ f7xg7 c4g8+ g7xg8 b3xg8+ >Angrim I tried to verify this, but failed. I assume "11 turns" does mean a mate in 11 moves. After the above 5 plies there is only one legal move left. Hence I started Chest after 1.Qxg7+ Q7xg7 2.Qg8+ Qxg8 3.Qbxg8+ Bxg8, searching for a mate in 8 (8 == 11-3). But according to Chest, there is no mate in 8 (K7/600, 350 MB hash, 435 secs). I have used this FEN: R1N1N2k/2qqqqbb/1nQ2q1r/2Q2qQ1/1nQ2q2/1QQQQq1r/1BB5/K5QR w - - Where did I go wrong? Or did I misunderstand? Heiner
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