Test your chess: Reitstein problem 92

White to play and win

F Korostenski v C Meiboom 1980

Solution

Knowing it is a problem, and with Reitstein giving the hint that white played 1 Rc1? but missed a better move, this one didn't take me long. Clearly, the black queen is in a net, using Purdy's term, and it can also be seen that 1 Rc1 prepares 2 Bd1 but that black's queen can slip to a2. So 1 Ra1! and the trap is complete.

Black's best is to lose the exchange by 1…Nb6 (freeing d5 after Bd1) 2 Nc6 but it is pretty hopeless, with white retaining back rank mate threats, and black's pieces being uncoordinated.

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