Test your chess: Reitstein problem 208

White to play and win

S Lewis v R Rubin 1962

Solution

1 Qd7! Is a double attack on two LPDOs, so black must either take the queen, when 1…Qd7 2 ed Rb8 3 Re8+ and white wins trivially, by slowly advancing his pawns. So 1…Rc7 is forced, except that 2 Qc7! Qc7 3 e7! is another double attack, so the pawn promotes.

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