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| White has just captured on f2 in Yasser Tello (159) - Spanton (168), Bradford U171 2019. Who, if anyone, stands better, and by how much? |
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Black is winning, according to the analysis engines Stockfish12 and Komodo11.01.
77...Ke4 78.Be3
The engines' 78.f5!? makes the win much less clear, eg 78...Kxf5 79.Bh6 Ke4 80.Bg7 f5 81.Ke2 g5 82.Bf6 Bf3+ 83.Kd2 f4 84.g4! Bxg4 85.Bxg5 Bh5 86.Bh6, when White seems to be holding, although Komodo11.01 disagrees. If White is holding, then it seems the diagrammed position is drawn.
78...Kd3?!
Almost certainly better is 78...f5, and if 79.Ke2 then 79...Bf1+!
79.g4
79.f5!? seems to draw, although after 79...gxf5 both engines reckon Black is winning. However after the further 80.Bh6 Kxd4 81.Bg7 Kc4 (81...Ke5 82.Ke3) 82.Bxf6 Kxb4 83.Ke2 there seems no way for Black to make progress, eg 83...Ka3 84.Kd2 b4 85.Bd4 b3 86.Kc1.
79...Kc3 80.f5 g5??
This turns a winning position into a losing one.
81.Ke2??
Returning the compliment; 81.Bxg5 wins.
81...Be4 82.Kf2 Kxb4 83.Kg3 Kc4 84.Kxh3 b4 85.Kg3 b3 86.Bc1 Kxd4 87.Bb2+ Kc4!?
This probably wins, but 87...Ke3 is clearer.
88.Bxf6
White had to try 88.h4, when 88...d4 (Komodo11.01 for quite some time prefers 88...gxh4, but the text seems better) 89.hxg5 fxg5 90.f6 Bd5 91.Kf2 Kd3 92.Ke1 Bc4 93.Kf2 Ke4 94.Ke1 Ke3 95.Bc1+ Kf3 96.Bb2 d3 97.Kd2 Kxg4 98.Kc3 Be6 99.Kxd3 Kf3 is a tablebase win, but this is a long line so there may be hope in it somewhere for White.
88...d4 0-1
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