Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 d5 3. Nf3 c6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 h6 7. Bh4 O-O 8. Bd3
Nbd7 9. O-O Nb6 10. cxd5 cxd5 11. Ne5 Nbd7 12. a4 a6 13. Rb1 Qc7 14. f4 Nxe5
15. fxe5 Nh7 16. Bxe7 Qxe7 17. b4 Bd7 18. b5 axb5 19. Nxb5 Bxb5 20. Rxb5 f5 21.
exf6 Rxf6 22. Bxh7+ Kxh7 23. Rxf6 gxf6 24. Qb3 Rb8 25. a5 Qc7 26. a6 b6 27.
Qb1+ Kg7 28. Rb2 Qa7 29. Ra2 b5 30. Qb4 Kg6 31. Ra5 Rb6 32. Rxb5 Rxa6 33. Rb7
Ra1+ 34. Kf2 Qa2+ 35. Kg3 Qe2 36. Qe7 Qxe3+ 37. Kh4 Qf4+ 38. Kh3 Qe3+ 39. g3
Qe4 40. Qg7+ Kf5 41. Qh7+ Kg5 42. Rg7+ Kh5 43. Qxe4 dxe4 *
Position (FEN): 8/6R1/4pp1p/7k/3Pp3/6PK/7P/r7 w - - 0 44
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 818
Best move: g4#