Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 c6 8. Qc2
Nbd7 9. Nf3 Re8 10. O-O Nf8 11. Ne5 N6d7 12. Bxe7 Qxe7 13. Nf3 Nf6 14. a3 Bg4
15. Ne5 Be6 16. f4 Ng4 17. Rae1 Nxe5 18. fxe5 c5 19. Rf4 c4 20. Be2 a6 21. Ref1
Ng6 22. R4f2 Qg5 23. e4 Nxe5 24. dxe5 d4 25. Nd5 d3 26. Bxd3 cxd3 27. Qxd3 Qxe5
28. Qf3 f6 29. Nf4 Bc4 30. Re1 f5 31. b3 fxe4 32. Qg3 Bb5 33. a4 Bc6 34. Qg4
Rad8 35. Nh5 Rd6 36. Rf5 Qd4+ 37. Kh1 Rg6 38. Rg5 Qd2 39. Nf6+ Kh8 40. Qh4 Rh6
41. Rh5 e3 42. Rxh6 *
Position (FEN): 4r2k/1p4pp/p1b2N1R/8/P6Q/1P2p3/3q2PP/4R2K b - - 0 42
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1525
Best move: Qxg2#