Author: Mike S.
Date: 17:23:50 05/07/03
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On May 07, 2003 at 06:30:23, Enrique Irazoqui wrote: >Except Junior 7, all engines I tried fail to see Bb4 in less than 5 minutes. > >Rashkovsky,N (2530) - Rublevsky,S (2525) >Kurgan Kurgan, 1993 >[Lisenko] >[D]8/2q1k2p/Q2bpp2/6p1/P1pP4/2P3P1/4PP1P/6K1 b - a3 0 23 >23...Bb4!! 24.cxb4 c3 25.Qd3 c2 26.Qxh7+ Kd6-+ 0-1 Great move! I chose The King to test, because this engine is a passed-pawn-lover more than others. King 3.23, sel. 12, ks 150/150 (P3/700 MHz 32 MB hash): 1...e5 2.e3 g4 3.Da8 µ (-0.87) Tiefe: 3 00:00:00 1...h5 2.a5 g4 3.Db5 µ (-0.89) Tiefe: 3 00:00:00 µ (-0.97) Tiefe: 4 00:00:00 1...e5 2.e3 g4 3.a5 µ (-1.00) Tiefe: 4 00:00:00 1...Kd7 2.a5 Dc6 3.Da7+ Lc7 4.a6 e5 5.dxe5 fxe5 µ (-1.18) Tiefe: 4 00:00:00 µ (-1.06) Tiefe: 7 00:00:01 75kN 1...Lb4 2.d5 exd5 3.cxb4 c3 4.Dd3 c2 5.De3+ Kd6 6.Dc1 Dc4 7.a5 Dxe2 8.a6 -+ (-2.08) Tiefe: 7 00:00:01 105kN µ (-1.18) Tiefe: 11 00:00:51 4782kN (sorry, forgot to switch to english. L=B, D=Q) The King finds 1...Bb4 very quickly, and doesn't expect White to capture immediatly. As it seems, 2.d5 introduces a defensive fork idea (Qe3+ against e7 and the promotion square c1). Maybe this positions is not yet lost for White... although, I let the engine calculate after the pv (after 5...Kd6) too, and the eval was very bad for White. Regards, Mike Scheidl
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