L.A. Times Problem No. 131 by Murray Marble, Literary Digest, October 1901. White mates in two.
FEN 1n6/1K2R3/2N1p1Qb/2Pk3r/B1pP3r/7b/n2pR3/3N4 w - - 0 1
Key: R-QB7/Rc7
Some good tries defeated by RxP.
Problem by J. Halumbirek, first prize, Austrian Chess Association tourney, 1929. White mates in four.
FEN b7/8/p7/1p1p4/5b2/8/1Q3p1p/5K1k w - - 0 1
Key: Rather simple four mover, probably as easy as a heavy two-er, but so many of our solvers voted against anything over two moves that we are giving the solution: 1. Q-R8/Qh8, the only key. If B-N2; 2. Q-N7, B-N6; 3. QxQB, etc. If B-B3; 2. Q-B3, B-K6; 3. QxQB etc. If B-N; 2. Q-R, B-R2; 3. Q-Q P-Q5; 4. KxP mate. The 'try' 1. Q-R is defeated by B-K6; 2. QxP, B-R2!