Author: Enrique Irazoqui
Date: 02:38:34 02/28/01
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On February 28, 2001 at 05:11:30, Sune Larsson wrote: > > [D]8/1p3p1p/p4P1k/P4P1p/6pP/6Pq/5P2/5K2 w - - 0 1 > > > True story this time. The above position happened in a free game between > Dr J. Perlis and N.N., many years ago, in Germany I think. The good doctor > was a generous man and played without a queen from the start. So it's not > strange that he is missing one in the above position. And since we are > careful, scientific people we shall have a closer look at it with Fritz. > > Okey, white is a queen down, is standing in check right now, Fritz gives > 3 ways to go: > > 1.Ke2 -19.44 > 1.Ke1 -19.75 > 1.Kg1 -19.12 > > Guess it's time for a new game... In fact it is - because after > 1.Kg1! *black* is mated in 6 moves. > > Sune Deep Fritz doesn't get it with normal settings. Try with Selectivity 0 and you will avoid null-move blindness. New position 8/1p3p1p/p4P1k/P4P1p/6pP/6Pq/5P2/5K2 w - - 0 1 Analysis by DEEP FRITZ : 1.Ke2 -+ (-8.62) Depth: 1/2 00:00:00 1.Ke2 Qg2 -+ (-8.62) Depth: 2/4 00:00:00 1.Kg1! -+ (-8.03) Depth: 2/4 00:00:00 1.Kg1! b5 2.axb6 -+ (-7.37) Depth: 2/4 00:00:00 1.Kg1 b5 2.axb6 -+ (-7.37) Depth: 3/4 00:00:00 1.Kg1 b5 2.axb6 a5 -+ (-7.37) Depth: 4/5 00:00:00 1.Kg1 b5 2.axb6 a5 3.b7 -+ (-7.09) Depth: 5/8 00:00:00 1.Kg1! -+ (-2.00) Depth: 6/8 00:00:00 1.Kg1! b5 2.axb6 a5 3.b7 a4 4.b8Q ³ (-0.66) Depth: 6/8 00:00:00 1.Kg1 b5 2.axb6 a5 3.b7 a4 4.b8Q ³ (-0.66) Depth: 7/9 00:00:00 1.Kg1! ± (1.34) Depth: 8/10 00:00:00 1kN 1.Kg1! b5 2.axb6 a5 3.b7 a4 4.b8Q Qxh4 5.gxh4 +- (6.78) Depth: 8/14 00:00:00 1kN 1.Kg1 b5 2.axb6 a5 3.b7 a4 4.b8Q Qxh4 5.gxh4 +- (6.78) Depth: 9/16 00:00:00 2kN 1.Kg1! +- (7.13) Depth: 10/12 00:00:00 3kN 1.Kg1! b5 2.axb6 a5 3.b7 Qxh4 4.gxh4 g3 5.fxg3 a4 6.b8Q +- (8.94) Depth: 10/17 00:00:00 4kN 1.Kg1 Qxh4 2.gxh4 g3 3.fxg3 b5 4.axb6 a5 5.b7 a4 6.b8Q +- (8.94) Depth: 11/15 00:00:00 8kN 1.Kg1! +- (#7) Depth: 12/14 00:00:00 11kN (Irazoqui, Cadaqués 28.02.2001) Deep Shredder's analysis: 1.00 0:00 -11.46 1.Ke2 (1) 0.1 1.00 0:00 +M7++ 1.Kg1 Qxh4 (3) 0.3 1.00 0:00 +M7 1.Kg1 Qxh4 (4) 0.4 2.00 0:00 +M7 1.Kg1 Qxh4 (5) 0.5 3.00 0:00 +M7 1.Kg1 Qxh4 (10) 1.0 4.00 0:00 +M7 1.Kg1 Qxh4 (29) 2.9 5.00 0:00 +M7 1.Kg1 Qxh4 (78) 7.8 6.00 0:00 +M7 1.Kg1 Qxh4 (170) 17.0 7.01 0:00 +M7 1.Kg1 Qxh4 (395) 39.5 8.01 0:00 +M7 1.Kg1 Qxh4 (754) 75.4 9.01 0:00 +M7 1.Kg1 Qxh4 (1.261) 97.0 10.01 0:00 +M7 1.Kg1 Qxh4 (3.040) 53.3 11.01 0:00 +M7 1.Kg1 Qxh4 (5.853) 92.9 12.01 0:00 +M7 1.Kg1 Qxh4 (10.902) 131.3 13.01 0:00 +M7 1.Kg1 Qxh4 (18.756) 172.0 best move: Kf1-g1 time: 0:00.178 min n/s: 248.993 nodes: 40.586 Enrique
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