Author: Uri Blass
Date: 02:17:03 09/14/02
Go up one level in this thread
On September 14, 2002 at 04:35:55, Uri Blass wrote: >On September 14, 2002 at 04:27:44, Kurt Utzinger wrote: > >>Hi Uri >> >>I have analysed this position some years ago and came to the conclusion that to >>say Qxa2 would be wrong is a typical wrong human thinking. Anyway, I did not >>find advantage for White: Black is simply better. >> >>Kind regards >>Kurt > >I agree > >I also suggested it in the winboard forum in the discussion with >Vladimir Yelin. > >Black has no simple win after Qxa2 but black also has no simple win after Qxf3. > >Uri I am still not sure if black has the advantage and it is possible that the postion is equal and black missed a win in previous moves. Note that if I continue to let Deep fritz to play against itself then it seems that white can improve it's position The problems is that most of the moves are not forced so even if there is a draw proving it is not simple A possible line is 23...Qb3 24.Rfd1 Rae8 25.Kg2 Rf5 26.R1d6 and now G.Kasparov - Genius3 [D]4r1k1/1p1R2bp/p1pR2p1/5r2/6Q1/1q2BP1P/1P3PK1/8 b - - 0 1 Analysis by Deep Fritz: 26...Qxe3-- ² (0.53) Depth: 1/3 00:00:00 26...Qxe3-- 27.fxe3 +- (4.87) Depth: 1/9 00:00:00 26...Rxe3! +- (3.00) Depth: 1/9 00:00:00 26...Rxe3! 27.fxe3 = (0.03) Depth: 1/9 00:00:00 26...Qxb2! = (0.00) Depth: 1/9 00:00:00 26...Qxb2! 27.Qc4+ -+ (-2.31) Depth: 1/9 00:00:00 26...Qxb2 27.Bd4 Bxd4 -+ (-2.28) Depth: 2/6 00:00:00 26...Qxb2 27.Bd4 Bxd4 28.Rxd4 Rff8 -+ (-2.25) Depth: 3/10 00:00:00 26...Qxb2 27.Rd2 Qb3 28.Bd4 Bxd4 -+ (-2.34) Depth: 4/14 00:00:00 2kN 26...Qxb2 27.Rd2 Qb3 28.Bd4 Be5 29.Bxe5 -+ (-2.34) Depth: 5/15 00:00:00 13kN 26...Qxb2 27.Bd4 Bxd4 28.Rxd4 c5 29.R4d6 Rfe5 -+ (-2.38) Depth: 6/18 00:00:00 43kN 26...Qxb2 27.Bd4 Bxd4 28.Rxd4 c5 29.Qh4 Rh5 30.Re4 Rxe4 -+ (-2.28) Depth: 7/21 00:00:00 125kN 26...Qxb2 27.Bd4 Bxd4 28.Rxd4 c5 29.Qh4 Rh5 30.Re4 Rf8 -+ (-2.13) Depth: 8/23 00:00:00 344kN 26...Qxb2 27.Qc4+ Kh8 28.Re6 Rxe6 29.Rd8+ Rf8 30.Rxf8+ Bxf8 31.Bd4+ Qxd4 32.Qxd4+ -+ (-2.06) Depth: 9/26 00:00:02 1395kN 26...Qxb2 27.Qc4+ Kh8 28.Re6 Rxe6 29.Rd8+ Rf8 30.Rxf8+ Bxf8 31.Bd4+ Qxd4 32.Qxd4+ -+ (-1.91) Depth: 10/27 00:00:04 2967kN 26...Qxb2-- -+ (-1.59) Depth: 11/27 00:00:08 6108kN 26...Qxb2-- 27.Qc4+ Kh8 28.Rxg7 Qxg7 29.Bd4 Rg5+ 30.Kh2 Rge5 31.f4 Re4 32.Qf7 ± (0.81) Depth: 11/29 00:00:14 10020kN 26...b6! ± (0.78) Depth: 11/29 00:00:17 12644kN 26...b6! 27.Rxc6 Qb5 28.Rcc7 Bxb2 = (0.25) Depth: 11/30 00:00:37 26659kN 26...c5! = (0.22) Depth: 11/30 00:00:41 29297kN 26...c5! 27.Rd8 Qb5 28.Qe4 Rfe5 29.Rxe8+ Rxe8 30.Qd5+ Kh8 µ (-1.00) Depth: 11/31 00:00:54 37971kN 26...Bf6! µ (-1.03) Depth: 11/32 00:01:19 49364kN 26...Bf6! 27.Bd4 Rg5 28.Bxf6 Rxg4+ 29.hxg4 h5 30.Bd4 µ (-1.25) Depth: 11/32 00:01:26 51851kN 26...Bf6 27.Bd4 Rg5 28.Bxf6 Rxg4+ 29.fxg4 Qb4 30.Rd4 µ (-1.06) Depth: 12/33 00:02:17 69108kN 26...c5! µ (-1.09) Depth: 12/33 00:03:01 84228kN 26...c5-- µ (-0.78) Depth: 13/34 00:07:14 172270kN 26...c5-- 27.Rc7 b6 28.Rdd7 Bf8 29.Rxh7 Re6 30.Bh6 µ (-0.72) Depth: 13/35 00:07:50 194196kN 26...Bf6! µ (-0.75) Depth: 13/35 00:08:19 211712kN 26...Bf6! 27.Bd4 Rg5 28.Bxf6 Rxg4+ µ (-0.88) Depth: 13/35 00:08:44 228113kN 26...Bf6 27.h4 Qb5 28.Rc7 Rd8 29.Rxd8+ Bxd8 30.Rd7 Bf6 µ (-0.72) Depth: 14/37 00:15:09 454498kN (blass, tel-aviv 14.09.2002) Uri
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