Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5
9. Nxg5 hxg5 10. Bxg5 Be7 11. exf6 Bxf6 12. Bxf6 Qxf6 13. Be2 Bb7 14. Qd2 Na6
15. a3 O-O-O 16. O-O-O Nc7 17. Bf3 Nd5 18. Ne4 Qf4 19. Nc5 a6 20. Kb1 Qf5+ 21.
Be4 Qg4 22. f3 Qg7 23. g4 Nf6 24. Nxb7 Kxb7 25. Bc2 Nd5 26. a4 Qf6 27. Rde1
Qxf3 28. Rhf1 Qxg4 29. Rxf7+ Kb6 *
Position (FEN): 3r3r/5R2/pkp1p3/1p1n4/P1pP2q1/8/1PBQ3P/1K2R3 w - - 1 30
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1269
Best move: a5#