Chess puzzle (Crushing)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Colorado_Countergambit_Accepted
Moves: 1. e4 Nc6 2. Nf3 f5 3. exf5 d5 4. Bb5 Bxf5 5. d3 Nf6 6. Nd4 Bd7 7. Qe2 *
Position (FEN): r2qkb1r/pppbp1pp/2n2n2/1B1p4/3N4/3P4/PPP1QPPP/RNB1K2R b KQkq - 4 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 863
Best move: Nxd4