Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_McConnell_Defense
Moves: 1. e4 e5 2. Nf3 Qf6 3. Nc3 c6 4. Bc4 b5 5. Bb3 Bc5 6. O-O h6 7. d4 exd4 8. e5
Qg6 9. Nxd4 a5 10. a4 b4 11. Ncb5 cxb5 12. Nxb5 Bb7 *
Position (FEN): rn2k1nr/1b1p1pp1/6qp/pNb1P3/Pp6/1B6/1PP2PPP/R1BQ1RK1 w kq - 1 13
White to move.
Themes:  Middlegame  
Puzzle rating: 2111
Best move: Bd5