Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. d4 Bg4 6. h3 Qh5 7. Be2 e6 8.
Qd3 Nc6 9. Bf4 Bb4 10. O-O-O Bf5 11. Qb5 O-O 12. g4 Bxg4 13. hxg4 Qxg4 14. Rh4
Qg2 15. Rg1 Nxd4 16. Rxg2 Nxb5 17. Nxb5 c6 18. Nbd4 g6 19. Be5 Nd5 20. Rxh7 f6
21. Rh6 fxe5 22. Rgxg6+ Kf7 23. Nxe6 Rg8 24. Nxe5+ Ke7 25. Rh7+ Kd6 26. Rd7+
Kxe5 27. f4+ Ke4 28. Bd3+ Ke3 29. Rxg8 Rxg8 30. c3 Kxd3 31. cxb4 *
Position (FEN): 6r1/pp1R4/2p1N3/3n4/1P3P2/3k4/PP6/2K5 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 792
Best move: Rg1#