Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nc3 g6 6. Nf3 Bg7 7. Be2 O-O 8.
O-O Nc6 9. Be3 Bg4 10. d5 Bxf3 11. Bxf3 Ne5 12. Be2 Nec4 13. Bc1 c6 14. a4 cxd5
15. exd5 a5 16. Qb3 Rc8 17. Bf4 Nxb2 18. Rac1 Bxc3 19. Rxc3 Rxc3 20. Qxc3 Nxd5
21. Qxb2 Nxf4 22. Bf3 b6 23. g3 Nd3 24. Qc3 Nc5 25. Rb1 Qd6 26. Qc4 Rb8 27. Qb5
Qd3 28. Kg2 Qxb5 29. axb5 Rd8 30. h4 e5 31. Bc6 Rd2 32. Kf3 a4 33. Ke3 Rc2 34.
Rd1 a3 35. Rd8+ Kg7 36. Ra8 a2 37. Bd5 Rc3+ 38. Ke2 Rc2+ 39. Kf3 Nd3 40. Bxa2
f5 41. Ra7+ Kf6 *
Position (FEN): 8/R6p/1p3kp1/1P2pp2/7P/3n1KP1/B1r2P2/8 w - - 2 42
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 803
Best move: Rf7#