Chess puzzle (Checkmate)
Moves: 1. d4 e5 2. dxe5 Nc6 3. Nf3 d6 4. exd6 Bxd6 5. c4 Nf6 6. Nc3 O-O 7. Bg5 Qe7 8.
e3 Qe6 9. Bd3 Nb4 10. Be2 Ne4 11. Nxe4 Qxe4 12. O-O Bg4 13. Nd4 Bxe2 14. Qxe2
Qe5 15. Bf4 Qf6 16. Bxd6 Qxd6 17. a3 Nc6 18. Nb5 Qe5 19. f4 Qe7 20. Rad1 a6 21.
Nc3 h6 22. Nd5 Qd6 23. Nb6 Qc5 24. Nxa8 Rxa8 25. b4 Qe7 26. c5 Qf6 27. Ra1 Re8
28. g3 Nd4 29. Qd3 Nf5 30. Rfe1 Nxe3 31. Rac1 c6 32. Rxe3 Rxe3 33. Qxe3 Qb2 34.
Rd1 Qc2 35. Rd8+ Kh7 36. Rb8 Qd1+ 37. Kg2 Qc2+ 38. Kh3 Qf5+ 39. g4 Qd7 40. Re8
h5 41. Qe4+ g6 42. Re7 *
Position (FEN): 8/1p1qRp1k/p1p3p1/2P4p/1P2QPP1/P6K/7P/8 b - - 1 42
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 870
Best move: Qxg4#