L.A. Times Problem No. 284 by A.D. Gibbs, Long Beach, California. First publication. White mates in two.
FEN 1n1b2K1/7p/2n2p2/R2N1kpQ/B7/1b2RPBr/4pp2/5q2 w - - 0 1
Key: Q-B7/Qf7
The White N is pinned by the Black bishop, making 1. N-K7 double check impossible. 1. K-N2 defeated by N-K4.
L.A. Times Problem No. 285 by S. Mlotkowski, Camden, New Jersey. Bethlehem Globe-Times, February, 1930. White mates in three.
FEN 8/8/6B1/8/2P5/pP6/PpRP1N2/bk2K3 w - - 0 1
Key: N-Q3/Nd3
If KxR; 2. N-B4ch. If KxP; 2. N-Bch.