Chess puzzle (Crushing)
Opening: Russian_Game, Russian_Game_Classical_Attack
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. Qd2 *
Position (FEN): rnbqk2r/ppp1bppp/8/3p4/3Pn3/3B1N2/PPPQ1PPP/RNB1K2R b KQkq - 3 7
Black to move.
Themes:  Opening  
Puzzle rating: 689
Best move: Nxd2