Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Nc6 6. Bc4 Bg4 7. Bd2 O-O-O
8. O-O Nxd4 9. Be2 Nxe2+ 10. Qxe2 Bxf3 11. gxf3 Qh5 12. Bf4 e5 13. Qxe5 Qxe5
14. Bxe5 Rd2 15. Rad1 Rxd1 16. Rxd1 Nd7 17. Bg3 h5 18. h4 c6 19. Ne4 Be7 20.
Ng5 Bxg5 21. hxg5 h4 22. Bd6 f5 23. Re1 Kd8 24. Be7+ Kc8 25. Bd6 Kd8 26. Kg2
h3+ 27. Kh2 Rh5 28. f4 Nb6 29. b3 Nd5 30. c4 Nc3 31. f3 Kd7 32. Ba3 b5 33. Be7
bxc4 34. bxc4 Nxa2 35. Bc5 Nc3 36. Re7+ Kd8 37. Rxg7 Ne2 38. Rxa7 Nxf4 39. Bd6
Ng6 40. f4 Nh4 41. Ra2 Nf3+ 42. Kh1 h2 43. Rf2 Rh3 44. Bc5 Ke8 45. g6 Rg3 46.
g7 *
Position (FEN): 4k3/6P1/2p5/2B2p2/2P2P2/5nr1/5R1p/7K b - - 0 46
Black to move.
Themes:  Endgame Arabian Mate, Mate in 1 
Puzzle rating: 628
Best move: Rg1#