Chess puzzle (Crushing)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 c6 3. h3 Qb6 4. b3 Nf6 5. e3 e6 6. Nf3 Ne4 7. Bd3 Bb4+ 8. Nfd2
Nc3 9. O-O *
Position (FEN): rnb1k2r/pp3ppp/1qp1p3/3p4/1b1P1B2/1PnBP2P/P1PN1PP1/RN1Q1RK1 b kq - 7 9
Black to move.
Themes:  Opening  
Puzzle rating: 981
Best move: Nxd1