Author: Uri Blass
Date: 18:44:19 12/05/05
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On December 05, 2005 at 19:14:46, Martin Giepmans wrote: >[D] 8/3N4/8/8/1pp5/brpp4/qpprp3/1nkbK3 w - - 3 13 > >I guess many other engines will also not find it. Mine only finds it when I >enable verification search (which is default off). >It's a null move problem. > >Martin A bad guess because Rybka solve the following problem that is about the same idea. New game, [D]8/3N4/8/8/1pp5/brpp3p/qpprp2P/1nkbK3 w - - 0 1 Analysis by Rybka 1.0 Beta 32-bit: 1.Ne5 = (0.00) Depth: 3 00:00:00 1.Ne5 = (0.00) Depth: 4 00:00:00 1.Ne5 Qa1 2.Nd7 = (0.00) Depth: 5 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 6 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 7 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 8 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 9 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 10 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 11 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 12 00:00:00 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 13 00:00:00 1kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 14 00:00:00 2kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 15 00:00:00 3kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 16 00:00:00 4kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 17 00:00:00 5kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 18 00:00:00 7kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 19 00:00:00 9kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 20 00:00:00 12kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 21 00:00:00 16kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 22 00:00:00 21kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 23 00:00:01 26kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 24 00:00:01 34kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 25 00:00:01 43kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 26 00:00:02 56kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 27 00:00:02 70kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 28 00:00:02 89kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 29 00:00:02 112kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 30 00:00:02 140kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 31 00:00:02 176kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 32 00:00:02 220kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 33 00:00:02 274kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 34 00:00:02 341kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 35 00:00:02 423kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 36 00:00:02 525kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 37 00:00:02 649kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 38 00:00:02 803kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 39 00:00:02 993kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 40 00:00:02 1229kN 1.Ne5 Qa1 2.Nd7 Qa2 = (0.00) Depth: 41 00:00:02 1518kN 1.Ne5 Qa1 2.Nxc4 +- (320.00) Depth: 42 00:00:02 1664kN (, 06.12.2005) Uri
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