Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_La_Bourdonnais_Variation
Moves: 1. e4 e6 2. f4 c5 3. Nf3 Nc6 4. Bc4 d5 5. exd5 exd5 6. Bb5 Nf6 7. O-O Be7 8.
Nc3 O-O 9. d3 Bd7 10. Bxc6 Bxc6 11. Ne5 Be8 12. Kh1 d4 13. Ne4 Nd5 14. Ng5 Bxg5
15. fxg5 f6 16. Qf3 Bc6 17. gxf6 Rxf6 18. Qg3 *
Position (FEN): r2q2k1/pp4pp/2b2r2/2pnN3/3p4/3P2Q1/PPP3PP/R1B2R1K b - - 1 18
Black to move.
Themes: Hanging Piece Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 577
Best move: Rxf1#