Chess puzzle (Advantage)
Moves: 1. e4 d5 2. e5 Bf5 3. h3 d4 4. Qf3 Qc8 5. Bd3 Bxd3 6. Qxd3 Nc6 7. Nf3 Qd7 8.
O-O e6 9. b3 f6 10. exf6 Nxf6 11. Bb2 e5 12. Qc4 O-O-O 13. Ng5 Nd5 14. d3 h6
15. Ne4 Bb4 16. a3 Na5 17. axb4 Nxc4 18. bxc4 Nxb4 19. Rxa7 Kb8 20. Nc5 Qf5 *
Position (FEN): 1k1r3r/Rpp3p1/7p/2N1pq2/1nPp4/3P3P/1BP2PP1/1N3RK1 w - - 3 21
White to move.
Themes: Queenside Attack Middlegame  
Puzzle rating: 1351
Best move: Rxb7+