Chess puzzle (Checkmate)
Moves: 1. Nf3 c5 2. g3 e6 3. Bg2 Nc6 4. d4 c4 5. b3 cxb3 6. axb3 Nf6 7. O-O d5 8. c4
Bd6 9. c5 Be7 10. Nc3 O-O 11. Qc2 b6 12. Nb5 a6 13. Nd6 Bxd6 14. cxd6 Qxd6 15.
Bf4 Qd7 16. Rfd1 Ne4 17. Ne5 Nb4 18. Qxe4 dxe4 19. Nxd7 Bxd7 20. Bxe4 Rad8 21.
Bd2 Nc6 22. Bxc6 Bxc6 23. Bb4 Rfe8 24. Rxa6 Rb8 25. e3 Bf3 26. Rc1 Rbc8 27.
Rxc8 Rxc8 28. Kf1 Rc1+ 29. Be1 Rc2 30. Rxb6 h6 31. b4 Be2+ 32. Kg2 Bd3 33. b5
Rc1 34. Ba5 Be4+ 35. Kh3 g5 36. Rb8+ Kh7 37. Bd8 Rg1 38. f4 Bf5+ 39. g4 *
Position (FEN): 1R1B4/5p1k/4p2p/1P3bp1/3P1PP1/4P2K/7P/6r1 b - - 0 39
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1334
Best move: Bxg4#