Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. d4 cxd4 5. cxd4 d6 6. Bb5 Bg4 7. Be2 Bxf3 8.
Bxf3 Nxd4 9. Be3 Qa5+ 10. Nc3 Nxf3+ 11. Qxf3 Rc8 12. O-O Nf6 13. Rfd1 Qb4 14.
Rab1 b6 15. a3 Qb3 16. Qf5 Rc4 17. f3 Be7 18. Bg5 O-O 19. Bxf6 Bxf6 20. Nd5 Bd8
21. Qd7 Rc2 22. Qxd6 Rxb2 23. Rxb2 Qxb2 24. Ne7+ Bxe7 25. Qxe7 a5 26. Rd8 Qc1+
27. Kf2 Qc5+ 28. Qxc5 bxc5 29. Rd5 Rc8 30. Ke3 f6 31. f4 exf4+ 32. Kxf4 c4 33.
Ke3 c3 34. Rd1 c2 35. Rc1 Rc3+ 36. Kd2 Rxa3 37. Rxc2 Ra4 38. Ke3 Ra3+ 39. Kd4
Kf7 40. Kd5 a4 41. h4 Rg3 42. Ra2 a3 43. e5 fxe5 44. Kxe5 Kg6 45. Kf4 Rb3 46.
g3 Kh5 47. Ra1 h6 48. Ra2 g5+ 49. Kf5 gxh4 *
Position (FEN): 8/8/7p/5K1k/7p/pr4P1/R7/8 w - - 0 50
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1021
Best move: g4#