Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. d4 f6 3. dxe5 fxe5 4. Nf3 Nc6 5. Bb5 a6 6. Bxc6 bxc6 7. Nxe5 Qe7 8.
Nf3 Qxe4+ 9. Qe2 Qxe2+ 10. Kxe2 d5 11. Re1 Be7 12. Kf1 a5 13. Bg5 Ba6+ 14. Kg1
Nf6 15. Ne5 O-O 16. c3 Bc5 17. Bxf6 Rxf6 18. Rf1 Raf8 19. Nd7 Bxf2+ 20. Rxf2
Rxf2 21. Nxf8 *
Position (FEN): 5Nk1/2p3pp/b1p5/p2p4/8/2P5/PP3rPP/RN4K1 b - - 0 21
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1179
Best move: Rf1#