Author: Laurence Chen
Date: 06:36:03 12/19/00
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On December 19, 2000 at 08:05:42, Uri Blass wrote: >On December 19, 2000 at 07:53:09, Laurence Chen wrote: > >>On December 19, 2000 at 06:12:00, Enrique Irazoqui wrote: >> >>>I think this is a forced line and black has a won ending. >>> >>>1...Bg7 2.Ng1 Rxg3 3.Ne2 Rf3 4.Ng1 Ned3+ 5.Kc4 Nxb2+ 6.Kxb4 Bc3+ 7.Ka3 b5 8.Qd4 >>>Bxd4 9.Nxf3 Bc3 10.b4 Nc4+ 11.Kb3 Bxa1 >>> >>>Enrique >>Yes, this is the main forced line which wins for Black. Therefore 1.... Bg7 >>deserves !!, and it's a very difficult move for a chess engine to find. > >I am not sure if it is a good test position because the main question is if it >is the only winning move. > >Uri The problem is after 1. ... Bg7, a lot of chess engines think that White has a shot for a draw, and evaluates the position as positive for White. It takes some chess engines a long time to realize that 1. ... Bg7 is winning for Black. I believe that 1. ... Bg7 leads to a forced win in the shortest path. 1. ... c5+ is possible, but White can put a lot of resistance. This position was taken from a game played by an IM and a GM in Sochi in 1958, IM R. Nezhmet and GM Polugaevsky. I'll post the whole game later. This position is very complex, and the labirynth of complicated variations is a little too much for the chess engines to resolve. Regards, Laurence
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