Chess puzzle (Checkmate)
Moves: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nxc3 7. bxc3 Bc5 8.
O-O O-O 9. d4 exd4 10. cxd4 Nxd4 11. Bb2 Nxf3+ 12. Bxf3 Qxd1 13. Raxd1 c6 14.
e3 Be6 15. a3 Rfd8 16. Rxd8+ Rxd8 17. Rb1 Bf5 18. Rc1 Bb6 19. Rc4 Bd3 20. Rg4
f6 21. Bxf6 Rd7 22. Bd4 c5 23. Bc3 Ba6 24. Re4 Rd3 25. Bb2 Rb3 26. Re8+ Kf7 27.
Bd5+ Kxe8 28. Bxb3 c4 29. Bc2 Ba5 30. Bxg7 Bd2 31. Kf1 c3+ 32. Kg2 Kf7 33. Bd4
Ke6 34. Kf3 b6 35. Bxh7 Kd5 36. Bc2 Bb7 37. Ke2 Ba6+ 38. Kd1 Ke6 39. h4 Bb7 40.
h5 *
Position (FEN): 8/pb6/1p2k3/7P/3B4/P1p1P1P1/2Bb1P2/3K4 b - - 0 40
Black to move.
Themes:  Bishop Endgame, Endgame Mate in 1 
Puzzle rating: 641
Best move: Bf3#