Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. f4 e5 3. Nf3 exf4 4. d3 g5 5. Be2 Bg7 6. O-O d6 7. Nc3 Nc6 8. a3
Ne5 9. Nd5 Be6 10. c3 Bxd5 11. exd5 Ne7 12. Nxg5 Nxd5 13. Ne4 f5 14. Bh5+ Ng6
15. Qa4+ Kf8 16. Qb3 Nde7 17. Bxf4 fxe4 18. Be5+ Ke8 19. Bxg7 Rg8 20. Bf6 Rf8
21. Bg5 Rxf1+ 22. Rxf1 d5 23. Qxb7 Rb8 24. Bxg6+ hxg6 25. Qxa7 c4 26. Bxe7 Qb6+
27. Qxb6 Rxb6 28. Bb4 cxd3 29. Rd1 Rf6 30. Bc5 Kd7 31. Be3 Kd6 32. b4 Rf7 33.
a4 d4 34. a5 dxc3 35. b5 Kd5 36. a6 c2 37. Rc1 Kc4 38. b6 Kc3 39. a7 d2 40.
Bxd2+ Kxd2 41. Rxc2+ Kxc2 42. a8=Q e3 43. b7 e2 44. Qa2+ Kd1 45. Qxe2+ Kxe2 46.
b8=Q *
Position (FEN): 1Q6/5r2/6p1/8/8/8/4k1PP/6K1 b - - 0 46
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 400
Best move: Rf1#