Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 d5 3. c4 Bf5 4. Nc3 e6 5. e3 Nc6 6. Be2 Bb4 7. a3 Be7 8. O-O
O-O 9. Nh4 Bg6 10. Nxg6 fxg6 11. Bd3 e5 12. c5 e4 13. Bb5 a6 14. Bxc6 bxc6 15.
b4 Rb8 16. Rb1 Qd7 17. h3 Nh5 18. Ne2 Bh4 19. Nf4 Nxf4 20. exf4 Rf5 21. Qg4 Bf6
22. f3 a5 23. fxe4 Bxd4+ 24. Kh1 dxe4 25. Rd1 Rd5 26. Qxd7 Rxd7 27. Bb2 Rbd8
28. Rxd4 Rxd4 29. Bxd4 Rxd4 30. bxa5 Ra4 31. Kg1 Rxa5 32. Rb8+ Kf7 33. Rb7 Kf6
34. Rxc7 Rxc5 35. Kf2 Rc3 36. a4 Ra3 37. Rxc6+ Kf5 38. g3 Rxa4 39. Rc5+ Kf6 40.
Ke3 h6 41. Rc6+ Kf5 *
Position (FEN): 8/6p1/2R3pp/5k2/r3pP2/4K1PP/8/8 w - - 2 42
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1259
Best move: g4#