Chess puzzle (Checkmate)
Moves: 1. d4 g6 2. e3 Bg7 3. Bd3 Nf6 4. f4 d6 5. Nf3 O-O 6. O-O a6 7. Nbd2 b5 8. e4
Bb7 9. e5 dxe5 10. fxe5 Nd5 11. Nb3 Nb4 12. c3 Nxd3 13. Qxd3 Nd7 14. Ng5 Nb6
15. e6 f6 16. Nf3 Qd6 17. Nc5 Bxf3 18. Qxf3 Nc4 19. Bf4 Qd8 20. Qg3 Nxb2 21.
Bxc7 Qc8 22. Nd7 Re8 23. Nb6 Qxe6 24. Nxa8 Rxa8 25. Qf3 Rc8 26. Ba5 Nc4 27. Bb4
Nd2 28. Qd1 Qe3+ 29. Kh1 Nxf1 30. Qxf1 f5 31. Re1 Qd2 32. Rxe7 Qxa2 33. Re2 Qb3
34. Qe1 h5 35. h3 Qa4 36. Qb1 a5 37. Ra2 Qxa2 38. Qxa2+ Kh7 39. Bxa5 Ra8 40.
Qa3 Bf8 41. Qa2 Bd6 42. Qf7+ Kh6 43. Bb4 *
Position (FEN): r7/5Q2/3b2pk/1p3p1p/1B1P4/2P4P/6P1/7K b - - 8 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 538
Best move: Ra1#