Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc2 g6 6. Nc3 Bg7 7. g3 O-O 8.
Bg2 d6 9. O-O Be6 10. Ne3 Rc8 11. Qd2 Ne5 12. b3 Nfg4 13. Nxg4 Nxg4 14. Bb2 Qb6
15. Rac1 Bh6 16. Qd3 Bxc1 17. Bxc1 Ne5 18. Qe4 Bf5 19. Qh4 Rfe8 20. Be3 Qa5 21.
Nd5 Nc6 22. g4 Be6 23. Nf4 Qxa2 24. Qh6 Qxb3 25. Bd5 Bxd5 26. cxd5 Ne5 27. h3
Rc3 28. Bd4 Rxh3 29. Nxh3 Nxg4 *
Position (FEN): 4r1k1/pp2pp1p/3p2pQ/3P4/3B2n1/1q5N/4PP2/5RK1 w - - 0 30
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 818
Best move: Qg7#