Author: Uri Blass
Date: 02:29:27 09/19/01
Go up one level in this thread
On September 19, 2001 at 03:54:57, Bruce Moreland wrote: >I ran for two minutes per position in K=2 mode, and here is what I came up with. > >It's hard to decide exactly what constitutes a cook. In purest sense, a cook >should be a mate that is no slower than the key allows. > >I think that positions with approximately the same large score could be >confusing, and I found a lot of those. > >I would throw these out, to be safe. > >Your mileage may vary. > >bruce > >--------------- > >Id: ECM.973 >Fen: 2r2bk1/4qp2/3n2p1/2R1p1Np/2p1N3/r6P/1Q3PP1/3R2K1 w - - 0 1 >Qxa3 is +3, the key, Rxc8 is +4. 1.Qxa3 Ne4 2.Nxe4 Rxc5 3.Rd7 Qe6 4.Rd8 Qe7 I believe that 5.Rxf8+ is winning for white but programs need time to find this move and usually prefer at small depthes Re8 that probably leads to a draw If Ferret evalutes 5.Re8 as +3 and not +1 for white then it seems that it has a poblem in it's evaluation function Here is Junior's evaluation for 5.Re8 It needs very small depth and less than 1 second on p200 to understand that the score should not be +3 for white Deep Fritz also does not see +3 score for white. New position [D]3R1bk1/4qp2/6p1/2r1p2p/2p1N3/Q6P/5PP1/6K1 w - - 0 1 Analysis by Junior 7: 5.Rd1 Rb5 µ (-0.91) Depth: 3 00:00:00 5.Ra8 Rc7 6.Nf6+ Qxf6 7.Qxf8+ ² (0.59) Depth: 3 00:00:00 5.Rxf8+ Kxf8 6.Nxc5 Qd8 ± (1.07) Depth: 3 00:00:00 5.Rxf8+ Qxf8 6.Nxc5 Qd8 7.Ne4 ± (0.71) Depth: 6 00:00:00 4kN 5.Re8! ± (1.37) Depth: 6 00:00:00 7kN 5.Re8! Qxe8 6.Nf6+ Kh8 7.Nxe8 Kh7 +- (2.22) Depth: 6 00:00:00 9kN 5.Re8 Qxe8 6.Nf6+ Kh8 7.Nxe8 c3 8.Nf6 c2 9.Qc1 ± (1.06) Depth: 9 00:00:00 37kN 5.Re8 Qxe8 6.Nf6+ Kh8 7.Nxe8 c3 8.Nf6 c2 9.Qc1 Rc6 10.Nd7 Bd6 ± (0.99) Depth: 12 00:00:02 226kN Uri
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