Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Levitsky_Attack
Moves: 1. d4 d5 2. Bg5 Nf6 3. e3 Bf5 4. c3 e6 5. Bb5+ c6 6. Bd3 Bxd3 7. Qxd3 Be7 8.
Nd2 a5 9. Nb3 b5 10. Ne2 b4 11. h3 bxc3 12. bxc3 Qb6 13. a4 *
Position (FEN): rn2k2r/4bppp/1qp1pn2/p2p2B1/P2P4/1NPQP2P/4NPP1/R3K2R b KQkq - 0 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 821
Best move: Qxb3