Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. f4 d6 6. Nf3 O-O 7. f5 a6 8. Bg5 h6
9. Bh4 b5 10. Bb3 Na5 11. Nd5 Nxb3 12. axb3 g5 13. fxg6 fxg6 14. Nxf6+ Rxf6 15.
Bxf6 Qxf6 16. Qd2 Kg7 17. Rf1 Bd7 18. h3 b4 19. O-O-O a5 20. g4 a4 21. g5 hxg5
22. Nxg5 axb3 23. cxb3 Ra1+ 24. Kc2 Qxf1 25. Rxf1 Rxf1 26. Ne6+ Bxe6 27. Qg5
Rf2+ 28. Kc1 Bb6 29. Qe7+ Bf7 30. h4 Rf3 31. Kc2 Rf2+ 32. Kc1 Kg8 33. Qd8+ Kg7
34. Qg5 Bxb3 35. h5 Rf1+ 36. Kd2 Rg1 37. Qe7+ Kh6 38. hxg6 Rg2+ 39. Ke1 Kxg6
40. Qe8+ Bf7 41. Qd7 Rxb2 42. Qg4+ Kf6 43. Qf5+ Ke7 44. Qg5+ Kd7 45. Qf5+ Be6
46. Qh7+ Kc6 47. Qe7 Bg4 48. Qe8+ Kc5 49. Qh8 b3 50. Qg8 Bd7 *
Position (FEN): 6Q1/2pb4/1b1p4/2k1p3/4P3/1p1P4/1r6/4K3 w - - 2 51
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1628
Best move: Qc4#