Chess puzzle (Advantage)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Bc5 5. Nc3 d6 6. h3 Na5 7. Be2 Bb4 8. a3
Bxc3 9. dxc3 b6 10. b4 Nc6 11. Bb5 Bb7 12. Bg5 h6 13. Bxf6 Qxf6 14. Qd5 Kd7 15.
Rad1 a6 16. Nxe5+ Kc8 17. Bxc6 Bxc6 18. Qxc6 Rb8 19. Nd7 Qe7 20. Rxd6 Qxd6 21.
Nxb6+ *
Position (FEN): 1rk4r/2p2pp1/pNQq3p/8/1P2P3/P1P4P/2P2PP1/5RK1 b - - 0 21
Black to move.
Themes:  Endgame  
Puzzle rating: 1034
Best move: Rxb6