L.A. Times Problem No. 87 by R.B. Green, Council Bluffs, Iowa. First publication. White mates in two.
FEN 1N6/8/3p4/4p3/1Nk1p3/4B3/8/QK6 w - - 0 1
Key: N-Q5/Nd5
Four mates by Q of which two are pure, meaning no square in the black king's field is commanded by more than one piece.
L.A. Times Problem No. 88 by Percy Bowater, Pasadena, California. First publication. White mates in three.
FEN 8/1b2B3/p3P3/p1Nk4/5K2/1P3n2/p7/Q7 w - - 0 1
Key: Q-R/Qh1. If K-Q5; 2. Q-Qch, if K-B6; 3. N-R4 mate! If others; 2. QxNch, etc.