L.A. Times Problem No. 81 by H. Weenink, Good Companions, April 1919. White mates in two.
FEN 8/3KN3/8/2p1k3/7Q/3P4/8/8 w - - 0 1
Key: N-Q5/Nd5
L.A. Times Problem No. 82 by H.F.L. Meyer. From Rayner's Chess Problems. Showing a single pawn promoted to Q, R, B or N, depending on Black's defense. Problem laws do not license P equals P or K when reaching eighth rank. White mates in three.
FEN 4b3/3PB2R/4k3/7p/PP2P2P/4N3/8/1K6 w - - 0 1
Key: 1. B-Q6/Bd6 If B-B2; 2. P-Q8 (Q) etc. If KxB; 2. PxB (R) etc. If K-B3; 2. PxB (B) etc. If B-N3; 2. P-Q8 (N) ch. etc. If BxP; 2. P-K5, etc. Showing P promotion to Q, R, B or N according to black's defense. Pawn promotion to K, P or piece of opposite color is not allowed, except in Christmas or April Fool puzzles problems.