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| White has just captured on d4 in Spanton (169) - Angus French (183), Central London League 2017. Who stands better, and by how much? |
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This position illustrates how big a factor having the more-active king can be. The analysis engines Stockfish12 and Komodo12.1.1 agree Black is better, but differ as to how much (+1.28, according to Stockfish12; +.68, according to Komodo12.1.1). But they agree that only one move maintains Black's advantage.
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41...Kb5 42.b3?!
This hardly helps.
However, desperately defending the d4 pawn with 42.Ke2 Kc4 43.Nb3 leaves White in zugzwang after 43...h5 44.h3 h4.
Best, according to the engines is 42.Nd3 Kc4 43.Ne5+ Kxd4 44.Nxf7 Bc1, but Black's advantages - the better minor piece, the more-active king and the only passed pawn - are probably enough for victory.
42...Kb4 43.Na6+?
Better, but still losing, is 43.Na4.
43...Kc3 44.Nc7 Kxd4 45.Nb5+ Kd3 46.Nxa7?? Be3+ 0-1
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