Chess puzzle (Advantage)
Moves: 1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nd2 Nbd7 5. c3 Nh5 6. Bg3 Nxg3 7. hxg3 g6 8. f4
Bg7 9. g4 Nf6 10. g5 Nd7 11. Ngf3 Qe7 12. Bd3 b6 13. Nh4 Bb7 14. g4 O-O-O 15.
Qa4 Kb8 16. Ba6 c5 17. b4 cxb4 18. Bxb7 bxc3 19. Qc6 cxd2+ 20. Kxd2 Nf8 *
Position (FEN): 1k1r1n1r/pB2qpbp/1pQ1p1p1/3p2P1/3P1PPN/4P3/P2K4/R6R w - - 1 21
White to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 2108
Best move: Ba6