Chess puzzle (Checkmate)
Moves: 1. Nf3 e6 2. c4 Nf6 3. g3 Be7 4. Bg2 O-O 5. O-O d5 6. d4 dxc4 7. Qa4 a6 8. Qxc4
b5 9. Qc2 Bb7 10. Bd2 Nbd7 11. Ba5 Rc8 12. Nbd2 Nb6 13. b4 Qd7 14. Rac1 Bd5 15.
e4 Bc4 16. Rfd1 Qc6 17. Ne5 Qb7 18. Nexc4 bxc4 19. e5 Nfd5 20. Nxc4 Nxc4 21.
Qxc4 c6 22. a3 Qb5 23. Bf1 f5 24. Rc2 f4 25. Rdc1 fxg3 26. hxg3 Qa4 27. Qa2 Rf3
28. Bxa6 Rcf8 29. Qc4 Qxa3 30. Qxc6 Rxg3+ 31. fxg3 Qxg3+ 32. Kh1 Qh3+ 33. Kg1
Bg5 34. Rh2 Qg3+ 35. Kh1 Qf3+ 36. Rg2 Bxc1 37. Qxe6+ Kh8 38. Qg4 Qf1+ 39. Rg1
Qxa6 *
Position (FEN): 5r1k/6pp/q7/B2nP3/1P1P2Q1/8/8/2b3RK w - - 0 40
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 439
Best move: Qxg7#