Chess puzzle (Advantage)
Moves: 1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. e3 e6 5. a3 Be7 6. Bh4 O-O 7. Bd3 c5 8. Bxf6
Nxf6 9. dxc5 Bxc5 10. Nf3 a6 11. Ng5 h6 12. Nf3 b5 13. g4 Nxg4 14. Rg1 e5 15.
Nxd5 Bb7 16. Rxg4 Bxd5 17. Nxe5 Be6 18. Rg1 Qf6 19. Ng4 Bxg4 20. Qxg4 b4 21.
Qe4 g6 22. Rg4 bxa3 23. Rxa3 *
Position (FEN): r4rk1/5p2/p4qpp/2b5/4Q1R1/R2BP3/1PP2P1P/4K3 b - - 0 23
Black to move.
Themes:  Middlegame  
Puzzle rating: 1374
Best move: Bxa3