Chess puzzle (Advantage)
Moves: 1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. Be2 O-O 6. Bg5 Nbd7 7. Qd2 e5 8. d5
Nc5 9. f3 a5 10. h4 c6 11. h5 Qb6 12. dxc6 bxc6 13. h6 Bh8 14. Qxd6 Be6 15. Qd2
Rfd8 16. Qc2 Rd7 17. Be3 Rad8 18. a3 Nd3+ 19. Qxd3 Qxb2 20. Rb1 Rxd3 21. Rxb2
Rxe3 22. Nd1 *
Position (FEN): 3r2kb/5p1p/2p1bnpP/p3p3/2P1P3/P3rP2/1R2B1P1/3NK1NR b K - 1 22
Black to move.
Themes:  Middlegame  
Puzzle rating: 2090
Best move: Rxa3