Chess puzzle (Checkmate)
Moves: 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be3 Bg4 6. Be2 Nc6 7. O-O Qc8 8. Qd2
a6 9. Rad1 e5 10. dxe5 Nxe5 11. Nxe5 Bxe2 12. Qxe2 dxe5 13. Rd2 O-O 14. Rfd1 b5
15. Bc5 Re8 16. Qf3 Qe6 17. a3 Qc4 18. Be3 c5 19. Bg5 Nh5 20. b3 Qe6 21. g4 Nf6
22. Bxf6 Qxf6 23. Qxf6 Bxf6 24. Rd6 Bg7 25. Rd7 Bh6 26. Nd5 Bf4 27. Nf6+ Kg7
28. Nxe8+ Rxe8 29. Ra7 c4 30. bxc4 bxc4 31. Rdd7 Rf8 32. Rxa6 c3 33. Kg2 Bd2
34. f3 Kh6 35. a4 Kg5 36. a5 Kf4 37. h3 Rb8 38. Raa7 Rb2 39. Rxf7+ Ke3 40. Rxh7
Rxc2 41. Rhf7 Ke2 42. Rac7 Kd1 43. Kg3 *
Position (FEN): 8/2R2R2/6p1/P3p3/4P1P1/2p2PKP/2rb4/3k4 b - - 5 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1689
Best move: Be1#