Test your chess: Reitstein problem 78

Black to play and win

H Durhan v H Meihuizen 1910

Solution

It is clear that a way is needed to remove white's queen's defence of h2, or a way to find a back rank mate. After trying various alternatives, I found the solution without too much difficulty: 1..Bf2! and 2 Nf2 Qh2 mate, or 2 Rc8+ Kh7 3 Nf6+ gf 4 Qe4+ f5 0-1.

Gata Kamsky would have found the solution in a split second. Why? Because as soon as I had solved the problem, I remembered his recent game from Gibraltar.

23…Nf2! is the same interference theme.

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