Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 g6 5. O-O Bg7 6. d3 O-O 7. h3 Nc6 8. Bf4 a6
9. a3 b5 10. b4 Bb7 11. Nbd2 Nh5 12. Bh2 Bxc3 13. g4 Ng7 14. Rc1 cxb4 15. axb4
Bxb4 16. Qb3 Bc5 17. Qb2 Rc8 18. d4 Bb6 19. Nb3 Na5 20. Ng5 Nxb3 21. Qxb3 Bxd4
22. Rcd1 Bf6 23. f4 Qb6+ 24. Kh1 Bxg5 25. fxg5 Bxe4+ 26. Bf3 Bxf3+ 27. Rxf3 Qc5
28. Rdf1 Qc4 29. Qe3 Ne6 30. Bf4 Nxf4 31. Rxf4 Qc7 32. Qb3 e6 33. Kh2 d5 34.
Rf2 Qc3 35. Qd1 b4 36. R4f3 Qc5 37. Qf1 Qc7+ 38. Kg2 a5 39. Qa1 Qc1 40. Qf6 Qc7
41. h4 Qd8 42. Qe5 Qc7 43. Qf6 Qd8 44. Qe5 Rc3 45. h5 Rxf3 46. Rxf3 Qb8 47. Qf6
Qd8 48. Qe5 Qe7 49. h6 a4 *
Position (FEN): 5rk1/4qp1p/4p1pP/3pQ1P1/pp4P1/5R2/6K1/8 w - - 0 50
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 971
Best move: Qg7#