Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. a3 c5 6. Be3 cxd4 7. Bxd4 Nc6 8. Nb5
a6 9. Nd6+ Bxd6 10. exd6 Nxd4 11. Qxd4 Nf6 12. Qc5 Rc8 13. d7+ Qxd7 14. Qb4
Rxc2 15. Nf3 Qc7 16. Be2 Rc1+ 17. Rxc1 Qxc1+ 18. Bd1 Bd3 19. Ne5 Bc2 20. O-O
Bxd1 21. Qd6 Qc8 22. Rxd1 Ne4 23. Qb4 Qc5 24. Qxb7 O-O 25. Nd7 Qxf2+ 26. Kh1
Qe2 27. Rc1 Nf2+ 28. Kg1 Qe3 29. Rf1 Nh3+ 30. Kh1 Qg1+ 31. Rxg1 *
Position (FEN): 5rk1/1Q1N1ppp/p3p3/3p4/8/P6n/1P4PP/6RK b - - 0 31
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 900
Best move: Nf2#