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Miscellaneous Problems

Solution

W. Langstaff
The Chess Amateur, 1922

[4k2r/8/5B1P/3R1KpP/8888]

5+3. (RV) Mate in 2

Analysis: If Black's O-O is still legal, then his last move was 0 .. g7-g5 and an en passant capture is legal. Following the PRA stipulation, we consider the two possibilities in turn.

Solution: