Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. g3 g6 5. Bg2 Bg7 6. d3 e6 7. f4 Nge7 8. O-O
O-O 9. Be3 Nd4 10. g4 f5 11. h3 Rb8 12. Ng3 b5 13. Qd2 b4 14. Nd1 a5 15. c3
bxc3 16. bxc3 Ndc6 17. Nf2 Bd7 18. Rfb1 a4 19. Qc2 Qa5 20. Bd2 Qa7 21. Rxb8
Rxb8 22. Rb1 Na5 23. Kf1 c4 24. d4 Rb6 25. gxf5 exf5 26. e5 Qb8 27. Rxb6 Qxb6
28. Bc1 Nc8 29. Qb2 dxe5 30. Bd5+ Kh8 31. dxe5 Qxb2 32. Bxb2 Nb6 33. Bf7 Bf8
34. e6 Bc6 35. Ne2 Kg7 36. Nd4 Bb7 37. Nd1 Be7 38. Ne3 Nd5 39. Nxd5 Bxd5 40.
Bc1 Kf6 41. Be3 Nc6 42. Nxc6 Bxc6 *
Position (FEN): 8/4bB1p/2b1Pkp1/5p2/p1p2P2/2P1B2P/P7/5K2 w - - 0 43
White to move.
Themes:  Bishop Endgame, Endgame Mate in 1 
Puzzle rating: 700
Best move: Bd4#