Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. f4 Nc6 3. Nf3 h5 4. Bc4 e6 5. d3 h4 6. Be3 h3 7. g3 a6 8. a4 b6 9.
Nbd2 Bb7 10. Qe2 Nf6 11. O-O-O Nb4 12. c3 b5 13. Bb3 Nxd3+ 14. Qxd3 c4 15. Bxc4
bxc4 16. Qxc4 Rc8 17. Qb3 Nxe4 18. Qxb7 Nxc3 19. bxc3 Rxc3+ 20. Kb2 Rxe3 21.
Nc4 Re2+ 22. Kb3 d5 23. Nce5 Qd6 24. Ra1 Re3+ 25. Kb2 Qb4+ 26. Qxb4 Bxb4 27.
Rhc1 Ke7 28. Nc6+ Kf6 29. Nxb4 Rb8 30. Ra3 Rxb4+ 31. Ka1 *
Position (FEN): 8/5pp1/p3pk2/3p4/Pr3P2/R3rNPp/7P/K1R5 b - - 1 31
Black to move.
Themes: Hanging Piece Endgame Mate in 1 
Puzzle rating: 891
Best move: Rxa3#