Chess puzzle (Advantage)
Opening: Modern_Defense, Modern_Defense_Other_variations
Moves: 1. d4 g6 2. Bf4 Bg7 3. Nf3 d6 4. h3 Nf6 5. e3 O-O 6. Nbd2 c5 7. dxc5 dxc5 8. c3
Nc6 9. Nb3 Re8 10. Nxc5 e5 11. Bg5 Qxd1+ 12. Rxd1 e4 13. Nd4 Nxd4 14. cxd4 Nd5
15. a3 b6 16. Bc4 bxc5 17. Bxd5 Rb8 18. dxc5 *
Position (FEN): 1rb1r1k1/p4pbp/6p1/2PB2B1/4p3/P3P2P/1P3PP1/3RK2R b K - 0 18
Black to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 2206
Best move: Ba6