Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. d3 Nf6 5. Qe2 Qe7 6. Bd2 Nc6 7. Nxc6 Qxe2+
8. Bxe2 dxc6 9. O-O b5 10. Re1 Be7 11. Ba5 Nd5 12. c4 bxc4 13. dxc4 Nb6 14. Bf3
Bb7 15. Nc3 Nxc4 16. Bxc7 Rc8 17. Bf4 Kf8 18. b3 Nd6 19. Rad1 Rd8 20. a4 a5 21.
Be3 Nc8 22. Rxd8+ Bxd8 23. Nb5 Be7 24. Rc1 Nd6 25. Nxd6 Bxd6 26. Bxc6 Ba6 27.
Bb6 g6 28. Bxa5 Kg7 29. Bc3+ f6 30. b4 Bf4 31. Re1 Bc4 32. Re4 Rd8 33. g3 Rd1+
34. Kg2 Bf1+ 35. Kf3 Rd3+ 36. Kxf4 Rxc3 37. b5 Bd3 38. Rd4 g5+ 39. Kg4 h5+ 40.
Kh3 f5 41. a5 f4 42. a6 f3 43. a7 *
Position (FEN): 8/P5k1/2B5/1P4pp/3R4/2rb1pPK/5P1P/8 b - - 0 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1930
Best move: Bf1#