Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Halloween_Gambit
Moves: 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Nxe5 Nxe5 5. d4 Ng6 6. e5 Ng8 7. Bc4 d5 8.
Bxd5 N8e7 9. Bb3 Nc6 10. Qf3 Ngxe5 11. dxe5 Nxe5 12. Qe2 Bd6 13. f4 O-O 14.
fxe5 Re8 15. O-O Bxe5 16. Bxf7+ Kh8 17. Bxe8 Qxe8 18. Qxe5 Qxe5 *
Position (FEN): r1b4k/ppp3pp/8/4q3/8/2N5/PPP3PP/R1B2RK1 w - - 0 19
White to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 491
Best move: Rf8#