Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. e5 Nc6 3. d4 Bf5 4. c3 e6 5. f4 Nge7 6. Bd3 Qd7 7. Nf3 Bxd3 8. Qxd3
Nf5 9. g4 Nfe7 10. Nh4 a6 11. O-O b5 12. f5 exf5 13. gxf5 f6 14. e6 Qd6 15. Bf4
Qd8 16. a4 g5 17. axb5 Nb8 18. bxa6 Nxa6 19. Qb5+ c6 20. Qb7 gxf4 21. Rxa6 Rg8+
22. Kh1 Rb8 23. Qd7+ Qxd7 24. exd7+ Kxd7 25. Ra7+ Kc8 26. b4 Rb7 27. Ra8+ Rb8
28. Rxb8+ Kxb8 29. Rxf4 Bh6 30. Rf2 Be3 31. Re2 *
Position (FEN): 1k4r1/4n2p/2p2p2/3p1P2/1P1P3N/2P1b3/4R2P/1N5K b - - 4 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 525
Best move: Rg1#