Chess puzzle (Checkmate)
Moves: 1. c4 e6 2. e3 d5 3. Nf3 Nf6 4. d4 Be7 5. Bd3 O-O 6. O-O a6 7. a4 b6 8. b3 Bb7
9. Nbd2 Nbd7 10. Qc2 c5 11. Bb2 Rc8 12. Qb1 Re8 13. Rd1 Qc7 14. h3 h6 15. a5
bxa5 16. Bc3 cxd4 17. Bxa5 Qb8 18. Nxd4 Qa8 19. cxd5 Nxd5 20. Nc4 Nc5 21. Bf1
Bd8 22. Bxd8 Rcxd8 23. Na5 Nc3 24. Qc2 Nxd1 25. Qxc5 Rc8 26. Qb6 Rb8 27. Rxd1
Bf3 28. Qxb8 Rxb8 29. gxf3 Qd5 30. Nac6 Rb7 31. Bxa6 Rc7 32. Bc4 Qd6 33. Ra1
Rxc6 34. Nxc6 Qxc6 35. f4 g5 36. fxg5 hxg5 37. Ra5 Kg7 38. Rxg5+ Kf6 39. Rg3
Qd6 40. Kg2 Qc6+ 41. Rf3+ Ke7 42. Kg3 Qe4 43. Rf4 Qe5 44. Kg2 Qg5+ 45. Rg4 Qe5
46. h4 Qb2 47. Rg3 f5 48. h5 Qh8 49. Rh3 Qh7 50. h6 Qg6+ 51. Kf3 *
Position (FEN): 8/4k3/4p1qP/5p2/2B5/1P2PK1R/5P2/8 b - - 2 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 768
Best move: Qg4#