L.A. Times Problem No. 69 by George Hume, Nottingham, Eng. Good Companions, 1923. From Alain C. White's 1928 Christmas series, 'The Properties of Castling'. White mates in two.
FEN 4k2r/2p1p2p/2p1P2p/2K2P1P/2PR4/3P4/6Q1/8 w - - 0 1
Key: Q-N2/Qb2
If Castles; 2. NxP mate. Other; 2. Q or R mates. 1. QxP defeated by BxK!
L.A. Times Problem No. 70 by Alain C. White, Litchfield, Ct. Deutsches Wochenschach, 1911. Another from 'The Properties of Castling'. White mates in two.
FEN 4k2r/2p1p3/2N3P1/b6q/1Q1B1pBp/6P1/2P5/R3K2R w - - 0 1
Key: Castles(K) If Castles; 2. NxP mate. Others; 2. Q or R mates. 1. QxPch defeated by BxK!