Chess puzzle (Crushing)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Normal_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. e3 Bb4 5. Bd3 Nbd7 6. f4 c5 7. Nf3 O-O 8. O-O
Bxc3 9. bxc3 b6 10. e4 Bb7 11. e5 Ne4 12. Qd2 *
Position (FEN): r2q1rk1/pb1n1ppp/1p2p3/2ppP3/2PPnP2/2PB1N2/P2Q2PP/R1B2RK1 b - - 2 12
Black to move.
Themes:  Opening  
Puzzle rating: 625
Best move: Nxd2