Test your chess: Reitstein problem 43

Black to play and win

PJS Robbertse v K Jankovsky 1976

Solution

The first move I looked at was 1…Rd2, but I couldn't make it work; so once I gave up on it (once being an operative word: I kept returning to it, trying to make it work) I quickly settled on the move which is the solution, 1…Qe5. Black's queen comes into c3 with winning effect.

I found the solution in a haphazard way: by way of process, first I could have followed Purdy's maxim to ignore all threats, and decide what you would otherwise wish to do if the threat could not possibly be executed: so, here, ignore threat of Pb4*Nc5. It is harder to fit Qe5 into one of his maxims, but I bet it could be said to be a threat to biff: really, it is simply improving a piece.

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