Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. c4 Bb7 5. Be2 Bb4+ 6. Bd2 Be7 7. Nc3 O-O 8. O-O
c5 9. Ne5 d6 10. Bf3 Qc7 11. Bxb7 Qxb7 12. Qf3 Qxf3 13. Nxf3 Nbd7 14. Rfd1 Rac8
15. d5 exd5 16. Nxd5 Nxd5 17. cxd5 Bf6 18. Bc3 b5 19. a4 b4 20. Bxf6 Nxf6 21.
b3 Ne4 22. Nd2 Nxd2 23. Rxd2 c4 24. bxc4 Rxc4 25. Rb1 a5 26. Kf1 Rfc8 27. Ke2
f5 28. f3 Kf7 29. Rb3 Kf6 30. f4 Rc3 31. Rdb2 Rxb3 32. Rxb3 Rc2+ 33. Kf3 Ra2
34. h3 Rxa4 35. g4 g6 36. Rb2 Ra3 37. Rc2 b3 38. Rc7 a4 *
Position (FEN): 8/2R4p/3p1kp1/3P1p2/p4PP1/rp2PK1P/8/8 w - - 0 39
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1082
Best move: g5#