Chess puzzle (Checkmate)
Moves: 1. c4 Nf6 2. d4 d5 3. Nc3 Nc6 4. Nf3 Bg4 5. cxd5 Bxf3 6. exf3 Nxd5 7. Bb5 Qd6
8. Ne4 Qb4+ 9. Bd2 Qxb5 10. a4 Qb6 11. O-O O-O-O 12. a5 Qxd4 13. a6 b6 14. Qc2
Ncb4 15. Qc1 Nd3 16. Qc2 N5f4 17. Ra4 Ne2+ 18. Kh1 Qd7 19. Be3 e5 20. Qxe2 Qxa4
21. Qd2 Bb4 22. Nc3 Bxc3 23. Qxc3 Qxa6 24. h3 f5 25. b4 f4 26. Ra1 Qb5 27. Bd2
Nxf2+ 28. Kh2 Nd3 29. Rxa7 Rhe8 *
Position (FEN): 2krr3/R1p3pp/1p6/1q2p3/1P3p2/2Qn1P1P/3B2PK/8 w - - 1 30
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 840
Best move: Qxc7#