Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. c4 Bd6 6. c5 Be7 7. Nc3 O-O 8. Bd3
Re8 9. O-O Bg4 10. h3 Bh5 11. Bf4 c6 12. Be5 Nbd7 13. Re1 Nxe5 14. Rxe5 Bg6 15.
Bxg6 hxg6 16. Qe2 Bf8 17. Re1 Rxe5 18. Nxe5 Qc7 19. g4 b6 20. g5 Nh5 21. Qf3
bxc5 22. Nxd5 cxd5 23. Nxg6 Bd6 24. Qxh5 fxg6 25. Qxg6 Rf8 26. Qe6+ Qf7 27. g6
Qxe6 28. Rxe6 Rd8 29. Kg2 cxd4 30. Kf3 Bf8 31. Ke2 Rd6 32. Rxd6 Bxd6 33. Kd3
Be5 34. f4 Bf6 35. h4 Kf8 36. h5 Ke7 37. f5 Kd6 38. b4 a6 39. a4 Kc6 40. Ke2
Kd6 41. Kd3 Ke5 42. a5 Kd6 43. Kc2 Kc6 44. Kb3 Kb5 45. Ka3 Kc4 46. h6 gxh6 47.
Ka4 d3 48. b5 Bb2 49. g7 d2 50. g8=Q *
Position (FEN): 6Q1/8/p6p/PP1p1P2/K1k5/8/1b1p4/8 b - - 0 50
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 680
Best move: axb5#