Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 Nc6 7. Bb3 Bd7 8.
Be3 g6 9. f3 Bg7 10. Qd2 Rc8 11. O-O-O Ne5 12. h4 b5 13. g4 Nc4 14. Bxc4 Rxc4
15. h5 b4 16. hxg6 bxc3 17. gxf7+ Kxf7 18. bxc3 Qa5 19. Nb3 Qxc3 20. Qe2 Rhc8
21. Rd2 a5 22. Bd4 Qb4 23. g5 Ng8 24. Rxh7 e5 25. Bxe5 Qxd2+ 26. Nxd2 Rxc2+ 27.
Kb1 dxe5 28. Qh2 Be6 29. Qxe5 Rc1+ 30. Kb2 R8c2+ 31. Ka3 *
Position (FEN): 6n1/5kbR/4b3/p3Q1P1/4P3/K4P2/P1rN4/2r5 b - - 4 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1591
Best move: Rxa2#