kingscrusher: 20...Qe3 puts White in the driving seat
Here is the concrete stuff for 20...Bc5 which seem to indicate with best (super-human play!) that Black in theory would have been winning: Mikhail Tal - Jan Hein Donner 1-0 7.0, Hoogovens Wijk aan Zee NED 1973
 click for larger viewAnalysis by Stockfish 14:
1. -+ (-2.63): 21.Kc1 Ba3+ 22.Kd2 Be6 23.Rhf1 Qc5 24.Qxc5 Bxc5 25.Bc4 Kc8 26.Rf3 g5 27.g3 Kb8 28.Kc1 Ba3+ 29.Kb1 Ne3 30.Bxe6 Nxd1 31.Rxf7 Kxa8 32.Kc2 Ne3+ 33.Kb3 Bc5 34.Bd7 Rf8 35.Rxh7 g4 36.e6 2. -+ (-5.16): 21.Qxd5+ Kc8 22.Nb6+ Bxb6 23.Qf3 Be3+ 24.Qxe3 Rd8+ 25.Qd4 Rxd4+ 26.cxd4 Bg4 27.Rc1+ Kb8 28.Rhe1 Qxd4+ 29.Bd3 Be6 30.Re4 Qd5 31.Ke3 a6 32.Bc4 Qc6 33.Kd4 Qb6+ 34.Kd3 Bf5 35.Rf1 Bxe4+ 36.Kxe4 3. -+ (-8.61): 21.Rc1 Qe3+ 22.Kd1 Qxe5 23.Ke1 Ne3 24.Qh4+ Kc8 25.Qg3 Re8 26.Qxe5 Rxe5 27.g4 Bg6 28.Rg1 Nc2+ 29.Rxc2 Bxg1 30.Rb2 Be3 31.Nb6+ Bxb6 32.Rxb6 axb6 33.Kf2 b5 34.c4 b4 35.Bf3 4. -+ (-9.81): 21.Ra1 Qe3+ 22.Ke1 Nf4 23.Rd1+ Kc8 24.Rd4 Kb8 25.Rxf4 Qc1+ 26.Bd1 Rd8 27.Rd4 Rxd4 28.cxd4 Qxc4 29.dxc5 Qc3+ 30.Kf2 Qd4+ 31.Kf3 g5 32.h3 Qf4+ 33.Ke2 Qxe5+ 34.Kf2 Qd4+ 35.Ke1 Qe3+ 36.Be2 5. -+ (-11.23): 21.Qxc5 Qxc5 22.Ke1 Ke7 23.Rxd5 Qxd5 24.Nb6 axb6 25.Rf1 Qxe5 26.Kf2 Qxh2 27.Rd1 Qf4+ 28.Bf3 Kf6 29.g3 Qc7 30.Rf1 Qxc3 31.Kg2 Qd2+ 32.Kg1 Qe3+ 33.Kg2 g5 34.Bxb7 6. -+ (-12.88): 21.Rb1 Qe3+ 22.Ke1 Nxc3 23.Rd1+ Nxd1 24.Qd5+ Kc8 25.Qf3 Bb4+ 26.Kf1 Qd2 27.g4 Ne3+ 28.Kf2
Black has a decisive advantage
(Gavriel, 08.09.2021) |