Author: Heiner Marxen
Date: 10:35:36 08/05/02
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On August 03, 2002 at 08:03:46, leonid wrote: >Hi, > >In next position mate for black side is almost instant and for whites 8 moves >deeper. Position is, probably, very easy. > >[D]qnkNqRqB/7Q/3PnPpb/3q3P/3Q3R/3QrBqp/7P/qbKNqQrQ w - - Yes, comparatively easy for Chest. After 79.19 seconds on Athlon 1500+ with 350 MB hash table Chest solves as mate in 10 with a unique key move: PV: Q3c4+ Nc6 d7+ Kc7 dxe8=N+ Kc8 Qd7+ Qxd7 Qxd7+ Kxd7 Bxc6+ Kxd8 Qhd5+ Qd6 Qxd6+ Kc8 Bxa8+ Nc7 Qdxc7# Timing shows a really small EBF (drops below 3): # 4 0.04s [ 2.00] 6kN [ 7.29] 1.06 613- 0 # 5 0.26s [ 6.50] 26kN [ 4.69] 1.21 3070- 0 # 6 1.01s [ 3.88] 98kN [ 3.72] 1.60 11559- 0 # 7 3.49s [ 3.46] 335kN [ 3.43] 2.38 43028- 0 # 8 10.82s [ 3.10] 1087kN [ 3.24] 3.51 140889- 0 # 9 29.16s [ 2.70] 2945kN [ 2.71] 5.18 385345- 1 # 10 79.18s [ 2.72] 8036kN [ 2.73] 6.52 1096332- 278 Cheers, Heiner
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