Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 Nc6 3. e3 Nf6 4. Bd3 Ne4 5. Nd2 f5 6. c3 Bd7 7. Ngf3 e6 8. Ne5
Bd6 9. f3 Nxd2 10. Qxd2 Bxe5 11. dxe5 Ne7 12. Qf2 c5 13. b3 Qa5 14. Qd2 d4 15.
exd4 cxd4 16. b4 dxc3 17. Qxc3 Qb6 18. Qd2 Nd5 19. Bg3 Rc8 20. Bf2 Qxb4 21.
Qxb4 Nxb4 22. Be2 Rc2 23. a3 Nd5 24. Bd1 Rb2 25. O-O O-O 26. Re1 Nf4 27. Bd4
Rxg2+ 28. Kh1 Rg6 29. Bxa7 Nh3 30. Rb1 Rb8 31. Bxb8 *
Position (FEN): 1B4k1/1p1b2pp/4p1r1/4Pp2/8/P4P1n/7P/1R1BR2K b - - 0 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1013
Best move: Nf2#