Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. Nf3 Bb4 5. a3 Bxc3+ 6. bxc3 d6 7. Bg5 f6 8. Bh4
Nd7 9. e3 Qe7 10. Be2 O-O-O 11. O-O h5 12. h3 g5 13. Bg3 g4 14. Nh4 gxh3 15.
gxh3 Qg7 16. Bf3 f5 17. Bxb7+ Kxb7 18. Qf3+ Kb8 19. Kh2 Ne7 20. Rg1 Qf6 21. a4
a5 22. Rab1 e5 23. Rb5 Rdf8 24. Rgb1 f4 25. exf4 exf4 26. Rxa5 fxg3+ 27. Qxg3
Rhg8 28. Qe3 Qxh4 29. Rb2 Nf5 30. Qf3 Nxd4 *
Position (FEN): 1k3rr1/2pn4/1p1p4/R6p/P1Pn3q/2P2Q1P/1R3P1K/8 w - - 0 31
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 820
Best move: Ra8#