It’s Your Move: daily chess puzzle # 113

Black to play and win

Bubis v Ciocaltea, Netanya 1965

Solution

On one level, fairly easy: 1…Rh1+! is fairly obvious, with a standard manoeuvre following after 2 Kh1.

2…Qe1+ 3 Kh2[] Bg1+, 4…Bf2+, 5…Qg1 mate.

White can though spoil the fun, playing 2 Kg3, when Black is winning (2…h5) but not with particular force. The reason I say the puzzle is only easy on one level is because my engine tells me that 1…Bg1+! is forced mate in six: 2 Kg3 Qe1+ mates, apparently- and playing through a few lines confirms this, though to me it isn't calculable, and I would fear the white king slipping away.

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