Test your chess: Reitstein problem 69

White to play and win

K Dreyer v S Arsinowitz 1937

Solution

Not too hard, especially if you consider all biffs and look at 1 Ng6+.

Then, 1…fg leads to mate by 2 Qe6+ Kf8[] 3 Qf7mate.

Black's only other alternative is 1…Ke8 which loses the queen after 2 Bb5+ Rd7 3 Qd2, the pinned rook meaning that the queen is LPDO.

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