Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. f4 Nc6 3. d3 d6 4. Nf3 f6 5. Nc3 Bg4 6. h3 Bh5 7. g4 Nd4 8. gxh5
Nxf3+ 9. Qxf3 Qe7 10. fxe5 Qxe5 11. Be3 Ne7 12. Qf4 g5 13. Qxe5 dxe5 14. O-O-O
O-O-O 15. Bxa7 b6 16. Bxb6 cxb6 17. h4 Bh6 18. hxg5 Bxg5+ 19. Kb1 Kc7 20. Bh3
Nc6 21. Bf5 Ra8 22. Nd5+ Kb7 23. h6 Ra6 24. b4 b5 25. Kb2 Ra4 26. a3 Rha8 27.
Ra1 Nd4 28. Bxh7 Rh8 29. Bf5 Rxh6 30. Rxh6 Bxh6 31. Nxf6 Bd2 32. c3 Ne2 33. Rh1
Bxc3+ 34. Kc2 Rxa3 35. Rh7+ Kc6 36. Bd7+ Kd6 37. Bxb5 Ra2+ 38. Kb3 Rb2+ 39. Kc4
*
Position (FEN): 8/7R/3k1N2/1B2p3/1PK1P3/2bP4/1r2n3/8 b - - 4 39
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 679
Best move: Rxb4#