Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. f4 Ne7 7. Be3 Nf5 8. Bf2
Nd7 9. g4 Nh6 10. h3 Be7 11. Nd2 Bh4 12. Qf3 Bxf2+ 13. Qxf2 Qb6 14. O-O-O a5
15. a4 Qb4 16. b3 Qa3+ 17. Kb1 b5 18. axb5 cxb5 19. c4 bxc4 20. Kc2 cxb3+ 21.
Nxb3 Rc8+ 22. Kd2 Qxb3 23. Ke1 Rc2 24. Ne2 O-O 25. Kf1 Rfc8 26. Kg1 a4 27. Qe1
Qe3+ 28. Kf1 Ra8 29. Rh2 a3 30. Ra1 Qb3 31. Nc1 Rxh2 32. Nxb3 Rh1+ 33. Ke2
Rxe1+ 34. Kxe1 Nb6 35. Rc1 Nc4 36. Rb1 f6 37. Nc5 Kf7 38. exf6 gxf6 39. Rb7+
Kg6 40. Nxe6 a2 *
Position (FEN): r7/1R5p/4Npkn/3p4/2nP1PP1/7P/p7/4K3 w - - 0 41
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 928
Best move: Rg7#