Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c5 4. e3 Qb6 5. b3 Nc6 6. d5 Qb4+ 7. c3 Nxc3 8. Qd2
Nxd5 9. Qxb4 Ndxb4 10. Na3 a6 11. Nf3 d6 12. Be2 Bg4 13. O-O g6 14. Nc4 b5 15.
Ncd2 Bg7 16. Rad1 Nxa2 17. h3 Bd7 18. e4 Nc3 19. Rde1 Nxe2+ 20. Rxe2 Nd4 21.
Nxd4 Bxd4 22. Kh2 f6 23. f4 O-O 24. e5 dxe5 25. fxe5 Bxe5+ 26. Kh1 g5 27. Bxg5
fxg5 28. Rxf8+ Rxf8 29. Rxe5 Rf5 30. Rxe7 Rf7 31. Re5 Rf5 32. Re7 Rd5 33. Ne4
Rd1+ 34. Kh2 Bc6 35. Nxg5 Rd2 36. Kg3 Rxg2+ 37. Kf4 Rf2+ 38. Kg4 Rb2 39. Nxh7
Rxb3 40. Nf6+ Kf8 41. Rc7 Rb4+ 42. Kg5 Bg2 43. Kg6 Bxh3 *
Position (FEN): 5k2/2R5/p4NK1/1pp5/1r6/7b/8/8 w - - 0 44
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1727
Best move: Rf7#