Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Qe7 5. Be2 Nxe4 6. Nc3 Nxc3 7. dxc3 Be6
8. Bf4 Nc6 9. Qd2 h6 10. h3 g5 11. Bg3 Bg7 12. O-O-O O-O-O 13. Kb1 f5 14. Rhe1
Qf7 15. b3 Qf6 16. Kb2 Nb4 17. Nd4 Nd5 18. c4 Ne7 19. c3 Bf7 20. f3 Rhe8 21.
Bd3 d5 22. cxd5 Nxd5 23. Bxf5+ Kb8 24. Rxe8 Bxe8 25. Be4 Bf7 26. Qd3 Ka8 27.
Nb5 Rd7 28. Nxc7+ Nxc7 29. Qxd7 Qxc3+ 30. Ka3 Qa5+ 31. Qa4 *
Position (FEN): k7/ppn2bb1/7p/q5p1/Q3B3/KP3PBP/P5P1/3R4 b - - 3 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1444
Best move: Nb5#