Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. c4 Be7 7. Nc3 O-O 8.
O-O c6 9. Bd2 Nbd7 10. cxd5 cxd5 11. Rac1 a6 12. Ne2 Bd6 13. Ng3 e5 14. dxe5
Nxe5 15. Nxe5 Bxe5 16. Ne2 Bxb2 17. Rb1 Ba3 *
Position (FEN): r2q1rk1/1p3ppp/p4n2/3p4/8/b2QP3/P2BNPPP/1R3RK1 w - - 2 18
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1111
Best move: Qxa3