Chess puzzle (Checkmate)
Moves: 1. Nf3 Nc6 2. b3 Nf6 3. g3 g6 4. Bg2 Bg7 5. Bb2 d5 6. O-O Bd7 7. d4 e6 8. Nbd2
h5 9. h4 Ng4 10. Ng5 Bf6 11. Ndf3 Bxg5 12. Nxg5 f6 13. Nf3 g5 14. Bc1 gxh4 15.
Nxh4 f5 16. Qd3 Nb4 17. Qd2 Nc6 18. a3 Qe7 19. Qd3 O-O-O 20. Ng6 Qg7 21. Nxh8
Rxh8 22. Bf4 h4 23. gxh4 Rxh4 24. Qg3 Nxd4 25. Qxh4 b6 26. f3 Nxe2+ 27. Kh1
Nxf4 28. fxg4 Ne2 29. gxf5 Ng3+ 30. Kg1 Nxf1 31. Rxf1 exf5 32. Qh5 d4 33. Qf3
c6 34. b4 c5 35. Qa8+ Kc7 36. Qxa7+ Kd6 37. Qxb6+ Ke7 38. Qxc5+ Ke6 39. Qxf5+
Kd6 40. Qd5+ Ke7 41. Re1+ Kd8 42. Qa8+ Kc7 43. Qa7+ Kd6 44. Qb6+ Bc6 45. b5 *
Position (FEN): 8/6q1/1Qbk4/1P6/3p4/P7/2P3B1/4R1K1 b - - 0 45
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 521
Best move: Qxg2#