Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nxd4 6. Qxd4 e6 7. Be2 Nf6 8.
Bg5 Be7 9. e5 dxe5 10. Qxe5 h6 11. Bh4 O-O 12. O-O Bd7 13. Rad1 Qc8 14. Bf3 Bc6
15. Bxc6 Qxc6 16. Rfe1 Nd7 17. Qd4 Bxh4 18. Qxh4 Nf6 19. Rd3 Rfd8 20. Rg3 Kh8
21. h3 Nd5 22. Nxd5 Rxd5 23. Qg4 Rg5 24. Qe4 Qxe4 25. Rxe4 Rxg3 26. fxg3 Rc8
27. c3 Kg8 28. Rb4 b6 29. Ra4 a5 30. Rd4 Kf8 31. Kf2 Ke7 32. Kf3 f6 33. g4 e5
34. Rd5 Ke6 35. Rd3 f5 36. gxf5+ Kxf5 37. Rd6 Rb8 38. h4 e4+ 39. Ke3 g6 40.
Rd5+ Kg4 41. Kxe4 Kxh4 42. Kf3 g5 43. Rd4+ Kh5 44. Kg3 Re8 45. Rd6 Rb8 46. Kh3
b5 *
Position (FEN): 1r6/8/3R3p/pp4pk/8/2P4K/PP4P1/8 w - - 0 47
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 838
Best move: g4#