Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. f4 c6 5. a4 d5 6. e5 Ng8 7. Bd3 h5 8. Nce2 Nh6
9. Nf3 Bg4 10. Ng3 Bxf3 11. Qxf3 e6 12. f5 Nxf5 13. Bxf5 exf5 14. O-O Bg7 15.
a5 h4 16. Ne2 Nd7 17. Nf4 Nf8 18. e6 Nxe6 19. Re1 Qd7 20. a6 b6 21. b4 O-O-O
22. Ra3 Nxd4 23. Qf2 Rhe8 24. Rd1 g5 25. Nd3 Re2 26. Qf1 h3 27. g3 Rg2+ 28. Kh1
Nxc2 29. Rc3 d4 30. Ne1 Qd5 31. Rf3 Nxe1 32. Rxe1 g4 33. Rxf5 Qd7 34. Rf4 Re8
35. Rxe8+ Qxe8 36. Rxg4 Bf8 37. Rxd4 c5 38. Rh4 Qc6 39. Qf5+ Kb8 40. Bf4+ Ka8
41. b5 Rg1+ 42. Kxg1 *
Position (FEN): k4b2/p4p2/Ppq5/1Pp2Q2/5B1R/6Pp/7P/6K1 b - - 0 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 669
Best move: Qg2#