Test your chess: Reitstein problem 203

White to play and win

D Friedgood v F Koronstenski 1977

Solution

In the game, white repeated by Rc8+ Rd8+ Rc8+ and the game was drawn. But 1 Ke3! and if 1…b2(Q) 2 Rc8+ and the K must move to the b file, when Rb8+ skewers king and queen: so white can promote a pawn.

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