Tuesday, 2 February 2021

Knight v Bishop (part 19)

White has just captured in c3 in Spanton (140) - M Lindley (126), Yorkshire League Division 2 1980. Who stands better, and by how much?
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Black is winning, according to the analysis engines Stockfish12 and Komodo11.01.
30...Kd7 31.Kd2 Kc6 32.Be5?
I do not know what my idea was, but I do know it is not a good one.
32...Nxe5 33.dxe5 b5 34.Ke3 Kd7 35.g5 g6 36.g4 Ke6 37.Kd4 a5 38.h4 a4 39.h5 e3?!
Black is still winning after this, but simpler is 39...Kd7 40.h6 (40.Kxd5 e3) Ke6 etc.
40.Kxe3 Kxe5 41.Kf3?
This is hopeless, but 41.h6, although more challenging, also loses, eg 41...Ke6 42.Kd4 Kd6 43.Ke3 Ke5 44.Kd3 Kf4 45.Kd4 Kxg4 46.Kxd5 Kxg5 47.Kc5 Kf5 48.Kxb5 g5 49.c4 Ke6 50.c5 (50.Kb6 is met by 50...g4 as Black will queen with check unless White spends another tempo moving his king) Kd7 51.Kc4 Kc6 52.Kd4 g4 53.Ke3 Kxc5 etc.
41...d4 42.cxd4+ Kxd4 43.Kf4 b4 44.hxg6 hxg6 0-1

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