Chess puzzle (Checkmate)
Moves: 1. d4 d6 2. Nf3 Nf6 3. Bf4 c5 4. e3 cxd4 5. exd4 Qa5+ 6. c3 Bg4 7. Nbd2 Nbd7 8.
Bd3 e5 9. dxe5 dxe5 10. Bg3 O-O-O 11. Qc2 Nc5 12. Bf5+ Bxf5 13. Qxf5+ Kb8 14.
O-O Ka8 15. Nc4 Qc7 16. Ncxe5 Nce4 17. Nd4 Nxg3 18. fxg3 Rd5 19. Qf4 Bd6 20.
Ndf3 Re8 21. Qg5 Bxe5 22. Nxe5 Rdxe5 23. Qxg7 Ne4 24. Qxh7 Qc5+ 25. Kh1 Nf2+
26. Kg1 Nh3+ 27. Kh1 Qg1+ 28. Rxg1 *
Position (FEN): k3r3/pp3p1Q/8/4r3/8/2P3Pn/PP4PP/R5RK b - - 0 28
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 922
Best move: Nf2#