Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 h6 7. Be3 Nbd7 8. Qd2
Kh7 9. Nh3 c5 10. d5 a6 11. a4 Ne8 12. Nf2 Nc7 13. Be2 Rb8 14. a5 b5 15. axb6
Rxb6 16. O-O e5 17. Nd3 Qe7 18. Rae1 h5 19. Bd1 Ne8 20. Bc2 Nef6 21. b3 Ng8 22.
g3 Ndf6 23. Na4 Rb8 24. Naxc5 dxc5 25. Bxc5 Qe8 26. Bxf8 Bxf8 27. f4 Bh3 28.
Rf2 Ng4 29. Rfe2 N8f6 30. fxe5 Nxe5 31. Qf4 Nxd3 32. Bxd3 Bc5+ 33. Kh1 Rxb3 34.
Bc2 Rb6 35. e5 Ng4 36. e6 f6 37. Qc7+ Qe7 38. d6 Bxd6 39. Qxb6 Ne5 40. Qe3 Bg4
41. Rf2 Bc5 42. Qxe5 Bxf2 43. Qe4 Qxe6 44. Qxe6 *
Position (FEN): 8/7k/p3Qpp1/7p/2P3b1/6P1/2B2b1P/4R2K b - - 0 44
Black to move.
Themes:  Endgame Double Bishop Mate, Mate in 1 
Puzzle rating: 866
Best move: Bf3#