Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Bc4 e6 3. Nc3 b6 4. Nf3 Bb7 5. d3 a6 6. Bg5 Be7 7. Qd2 b5 8. Bb3 d6
9. O-O Nd7 10. Rfe1 Ne5 11. Bxe7 Nxf3+ 12. gxf3 Nxe7 13. Qg5 O-O 14. Kh1 Ng6
15. Qg3 Qf6 16. Rg1 Rfd8 17. Ne2 Qxb2 18. Nf4 Qf6 19. Nxg6 fxg6 20. h4 Rd7 21.
Kh2 Rad8 22. Qg4 Re7 23. Rae1 Bc8 24. f4 Kh8 25. e5 dxe5 26. fxe5 Qxf2+ 27. Qg2
Qxh4+ 28. Qh3 Qxh3+ 29. Kxh3 Rf8 30. Kg2 Ref7 31. Ref1 Rxf1 32. Rxf1 Rxf1 33.
Kxf1 g5 34. a4 Bd7 35. axb5 axb5 36. Kf2 h5 37. Kg3 Kh7 38. c3 Kg6 39. Bc2 Kf5
*
Position (FEN): 8/3b2p1/4p3/1pp1Pkpp/8/2PP2K1/2B5/8 w - - 3 40
White to move.
Themes: Discovered Attack Bishop Endgame, Endgame Mate in 1 
Puzzle rating: 860
Best move: d4#