Chess puzzle (Checkmate)
Moves: 1. b4 Nc6 2. b5 Nd4 3. e3 Nf5 4. Bb2 e6 5. Nf3 Be7 6. g4 Nd6 7. Bxg7 Bf6 8.
Bxh8 Bxh8 9. c3 Nc4 10. Bxc4 d5 11. Bd3 Nf6 12. h3 Ne4 13. h4 Bd7 14. a4 Qe7
15. Bxe4 dxe4 16. Nd4 e5 17. Nb3 O-O-O 18. g5 f5 19. c4 f4 20. Nc3 fxe3 21.
fxe3 Qf7 22. Qe2 Be6 23. Nc5 Bxc4 24. Qg4+ Kb8 25. N5xe4 Be6 26. Qe2 Bc4 27.
Qf2 Qd7 28. Nf6 Qd3 29. Rc1 e4 30. Nfxe4 Bxc3 31. Nxc3 Qd6 32. d4 Qa3 33. Qc2
Re8 34. Kd2 Bb3 35. Qxh7 Qb2+ 36. Kd3 c5 37. Qd7 *
Position (FEN): 1k2r3/pp1Q4/8/1Pp3P1/P2P3P/1bNKP3/1q6/2R4R b - - 1 37
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1474
Best move: c4#