Author: Heiner Marxen
Date: 15:30:08 07/06/01
Go up one level in this thread
On July 06, 2001 at 09:40:31, Heiner Marxen wrote: >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 - - There is not even one in 9 moves, here (again, according to Chest). Heiner >Where did I go wrong? Or did I misunderstand? > >Heiner
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