Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nf6 5. d4 Nc6 6. Nc3 Qd7 7. d5 Nb4 8.
a3 Nbxd5 9. Bb5 c6 10. Nxd5 Nxd5 11. Bc4 e6 12. Be2 Bc5 13. Ne5 Bxe2 14. Qxe2
Qc7 15. O-O O-O 16. c4 Nf6 17. Qf3 Qxe5 18. Bf4 Qh5 19. Qg3 Ne4 20. Qb3 Qf5 21.
Be3 Bxe3 22. fxe3 Qc5 23. Qxb7 Qxe3+ 24. Kh1 Nf2+ 25. Kg1 Nh3+ 26. Kh1 Qg1+ 27.
Rxg1 *
Position (FEN): r4rk1/pQ3ppp/2p1p3/8/2P5/P6n/1P4PP/R5RK b - - 0 27
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 1033
Best move: Nf2#