Test your chess: Reitstein problem 180

Black to play and win

C Wolpe v M Henning 1984

Solution

I think this is one of those problems that is easy if you see it, and not if you don't. 1…Bc1! came to my mind more or less instantly, once I saw that white had c1 twice covered, and also seeing the Bf5 Qc2 battery in b1.

Oddly, I can't think which of Purdy's mantras best suits here. Maybe the motif is to identify nets, and here the threat of back rank mate makes one look for ways to disrupt white's defence of c1 and b1.

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