Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 Nc6 6. e3 b6 7. f3 Ba6 8. Bd3
Na5 9. e4 Bxc4 10. Bxc4 Nxc4 11. Ne2 d5 12. e5 Ng8 13. O-O Ne7 14. Ng3 Qd7 15.
a4 O-O-O 16. a5 Nxa5 17. f4 Kb7 18. Rf2 Ka8 19. Rfa2 Nec6 20. Qa4 Nc4 21. Ba3
N6a5 22. Qc2 h5 23. Bb4 h4 24. Nf1 h3 25. Nd2 Nxd2 26. Qxd2 Nc6 27. Qd3 Rb8 28.
Qb5 Rb7 29. g3 Nxe5 30. Qa6 Nc4 31. Re2 Qc6 32. Qa2 g6 33. Qc2 Rhb8 34. Qd1 a5
35. Rea2 Ra7 36. Qf1 Rbb7 37. Qxh3 axb4 38. Qh8+ Rb8 *
Position (FEN): kr5Q/r1p2p2/1pq1p1p1/3p4/1pnP1P2/2P3P1/R6P/R5K1 w - - 2 39
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 855
Best move: Rxa7#