Author: John Merlino
Date: 10:46:06 07/31/04
Go up one level in this thread
On July 31, 2004 at 07:24:15, Mark Young wrote: >[d]3q3r/4b1k1/4P1p1/rpp2p1p/1nn2Q2/5N1P/P4PP1/RBB1R1K1 w >Another GM sac refuted by computers? > >This position is from... > >GM Fischer - GM Leonid Stein >Interzonal, Sousse 1967 > >GM Fischer played the (so called) winning move Bxf5! Annotators claim GM Fischer >wins easily after Bxf5! gxf5 Qg3+ Kh7 Ng5+ Bxg5 Bxg5 Qe8(or Qd3). > >For this reason GM Stein played Qf8? and lost...but Bxf5 gxf5! seems to more >then hold the position. Do any computers or humans disagree. > >Example line. >Bxf5 gxf5! Qg3+ Kh7 Ng5+ Bxg5 Bxg5 Ra3!. After Ra3 Qxa3 Nxa3 Bxd8 Rxd8, CM9_SKR on a P4-2.4 says that Black has a slight advantage: Time Depth Score Positions Moves 0:00 1/4 0.14 967 7.e7 Re8 8.Rac1 Nd3 0:00 1/5 0.22 5538 7.e7 Re8 8.Re2 Nc4 9.Rd1 0:00 1/5 0.44 12008 7.Re5 c4 8.Rxf5 Kg6 9.e7 Rc8 0:00 2/6 0.53 27812 7.Re5 Re8 8.Rxc5 Rxe6 9.Rxf5 Kg6 0:00 2/7 0.49 67447 7.Re5 Nd3 8.Rxf5 c4 9.Rxh5+ Kg6 10.Rh4 c3 0:00 2/8 0.47 159361 7.Re5 Nd3 8.Rxf5 c4 9.Rxh5+ Kg6 10.Rh4 Kf6 11.Rh6+ Ke5 0:01 3/9 0.40 374027 7.Re5 Nd3 8.Rxf5 Kg6 9.e7 Re8 10.Rf3 c4 11.Re3 Kf7 0:04 3/10 0.33 847288 7.Re5 Nd3 8.Rxf5 Kg6 9.Rf3 c4 10.Rd1 b4 11.e7 Re8 12.Re3 0:11 3/11 0.27 2574940 7.Re5 c4 8.Rxf5 Kg6 9.Rf3 Nac2 10.Rb1 Nxa2 11.e7 Re8 12.Rxb5 Rxe7 0:24 4/12 0.02 5564934 7.Re5 c4 8.Rxf5 Kg6 9.Rf3 Nd3 10.Rd1 b4 11.Kf1 Rd6 12.Re3 Kf6 1:11 5/13 0.11 17091831 7.Re5 c4 8.Rxf5 Kg6 9.Rf3 Nd3 10.Rd1 Re8 11.Rg3+ Kh6 12.Re3 Nc2 13.Re4 Ncb4 3:07 6/14 -0.23 46961100 7.Re5 c4 8.Rxf5 Kg6 9.Rf3 Nd3 10.Rd1 Re8 11.Rfxd3 cxd3 12.Rxd3 Nc4 13.Rd5 Rxe6 14.Rxb5 Re2 jm
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