Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. g3 c5 5. Bg2 Be7 6. dxc5 Bxc5 7. O-O O-O 8. Qc2
d4 9. a3 a5 10. Nbd2 Nc6 11. Nb3 Ba7 12. Bf4 Qe7 13. Ne5 Nxe5 14. Bxe5 Rd8 15.
Nxa5 d3 16. exd3 Bxf2+ 17. Qxf2 Rxa5 18. d4 Ng4 19. Qe1 b6 20. b4 Ra7 21. d5
exd5 22. Bb8 Rb7 23. Qxe7 Rxe7 24. Bxd5 Be6 25. Bxe6 Rxe6 26. Bf4 Ne3 27. Rfe1
Nxc4 28. Rxe6 fxe6 29. Rc1 Nxa3 30. Rc7 Nb5 31. Rb7 Nd4 32. Kf2 Rf8 33. Kg2 b5
34. Be5 Nf5 35. Kh3 h5 36. Rxb5 Ne3 37. Rb8 g5 38. b5 Nd5 39. g4 h4 40. Rxf8+
Kxf8 41. Bd4 *
Position (FEN): 5k2/8/4p3/1P1n2p1/3B2Pp/7K/7P/8 b - - 1 41
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 409
Best move: Nf4#