Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 dxc4 3. e3 e5 4. Nf3 exd4 5. Nxd4 c5 6. Nf3 Qxd1+ 7. Kxd1 Nf6 8.
Bxc4 Nc6 9. a3 Be7 10. Nc3 O-O 11. Ke2 Bg4 12. h3 Bd7 13. Bd2 Rad8 14. Nd5 Nxd5
15. Bxd5 Bf6 16. Rab1 b6 17. b4 cxb4 18. axb4 Rfe8 19. Rbc1 Rc8 20. e4 Nd4+ 21.
Nxd4 Bxd4 22. Rxc8 Bb5+ 23. Kf3 Rxc8 24. Rc1 Rxc1 25. Bxc1 Bc3 26. Ba3 Kf8 27.
Ke3 Ke7 28. f4 f6 29. g4 g5 30. Bg8 h6 31. Kf3 Bd2 32. fxg5 fxg5 33. Bb2 Bxb4
34. Bg7 a5 35. e5 Bc6+ 36. Kg3 a4 37. Bxh6 Bd2 38. Kf2 b5 39. Ke2 Bf4 40. Bg7
b4 41. Kd3 Bb5+ 42. Kc2 Bf1 43. Bh7 Bxh3 44. Bf5 Bg2 45. Bf6+ Kf7 46. Bd8 a3
47. e6+ Ke8 48. e7 Bd5 49. Bg6+ Bf7 50. Bd3 b3+ 51. Kc3 Be5+ 52. Kb4 a2 *
Position (FEN): 3Bk3/4Pb2/8/4b1p1/1K4P1/1p1B4/p7/8 w - - 0 53
White to move.
Themes:  Bishop Endgame, Endgame Mate in 1 
Puzzle rating: 689
Best move: Bb5#