Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nxc6 Bxc6 7. Nc3 Qf6 8.
Nd5 Bxd5 9. exd5 O-O-O 10. O-O Ne7 11. Re1 g5 12. Bd2 Qxb2 13. Rb1 Qd4 14. Bb3
Nxd5 15. Qe2 Nf4 16. Qg4+ Kb8 17. Rbd1 h5 18. Qxg5 Bh6 19. Qa5 Rhe8 20. Be3
Qxd1 21. Qxa7+ Kc8 22. Rxd1 Ne2+ 23. Kf1 Bxe3 24. fxe3 Nc3 25. Rd3 Nb5 26. Qa8+
Kd7 27. Qxb7 Rb8 28. Qf3 Kc8 29. Qxf7 Kb7 30. Bd5+ Ka6 31. Bc4 Rf8 32. Bxb5+
Kxb5 33. Rb3+ Ka5 34. Rxb8 Rxf7+ 35. Ke2 c6 36. Rd8 d5 37. Rd6 Kb5 38. a4+ Kc5
39. Rh6 Ra7 40. Rxh5 Rxa4 41. Kd3 Ra3+ 42. c3 Ra2 43. g3 Ra1 44. e4 Rd1+ 45.
Kc2 Rh1 46. exd5 cxd5 47. g4 Kc4 48. g5 Rg1 49. h4 Rg2+ 50. Kd1 Kd3 51. Rh8 *
Position (FEN): 7R/8/8/3p2P1/7P/2Pk4/6r1/3K4 b - - 4 51
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 930
Best move: Rg1#