Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nf6 3. Bf4 e6 4. Nc3 Bd6 5. Bxd6 Qxd6 6. e3 O-O 7. Nf3 Nc6 8. a3
h6 9. c5 Qe7 10. b4 a5 11. b5 Nd8 12. a4 c6 13. bxc6 Nxc6 14. Bb5 Nb4 15. O-O
Bd7 16. Ne5 Bxb5 17. Nxb5 Nd7 18. Nd3 b6 19. Nxb4 axb4 20. cxb6 Nxb6 21. Qb3
Rfc8 22. Rfc1 Rxc1+ 23. Rxc1 Rxa4 24. h3 Ra5 25. Nc3 Ra3 26. Qb2 Nc4 27. Qe2 b3
28. Rb1 b2 29. Kh2 Qd6+ 30. g3 Ra1 31. Rxb2 Nxb2 32. Qxb2 Qa6 33. Kg2 Qf1+ 34.
Kf3 Qh1+ 35. Kg4 h5+ 36. Kh4 Rf1 37. Qb8+ Kh7 38. Qf4 f6 39. e4 Qxe4 40. Nxe4
dxe4 41. Qxe4+ f5 42. Qxe6 Rxf2 43. d5 f4 44. Qf5+ g6 45. Qf7+ Kh6 46. d6 *
Position (FEN): 8/5Q2/3P2pk/7p/5p1K/6PP/5r2/8 b - - 0 46
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1352
Best move: g5#