Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb2 Bg4 6. Nbd2 cxd4 7. exd4 e6 8. h3
Bh5 9. Bd3 Bd6 10. O-O Qb6 11. Re1 Nxd4 *
Position (FEN): r3k2r/pp3ppp/1q1bpn2/3p3b/3n4/1P1B1N1P/PBPN1PP1/R2QR1K1 w kq - 0 12
White to move.
Themes:  Middlegame  
Puzzle rating: 1593
Best move: Bxd4