Test your chess: Reitstein problem 19

White to play and win

P Kroon v P Samak, 1971

Solution

This one took me a while. How to get the queen out? Then I realised:

• The b7 square is a weakness for black
• The blackqueen is tied to defending the a7 pawn.

So, biff the black queen by 1 R6d3!, and if it moves off the g1-a7 diagonal, take on a7; and if it moves say to c5, then Rb3! frees the queen. Finally, the queen is also freed after 1…Rd7 2 Rd7+ Nd7 and say 3 Qh8.

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