Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Max_Lange_Defense
Moves: 1. e4 e5 2. Nc3 Nc6 3. h4 h5 4. Nf3 Nf6 5. Ng5 Ng4 6. Bb5 Bb4 7. Nd5 Nd4 8. b3
c6 9. Nxb4 cxb5 10. Qf3 f6 11. Nh3 Qe7 12. O-O Nxf3+ 13. gxf3 Qxb4 14. Bb2 Qxd2
15. Rfd1 Qxf2+ 16. Nxf2 Ne3 17. Rd5 Nxc2 18. Rad1 Nb4 19. Rxb5 a6 *
Position (FEN): r1b1k2r/1p1p2p1/p4p2/1R2p2p/1n2P2P/1P3P2/PB3N2/3R2K1 w kq - 0 20
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1270
Best move: Rxb4