Chess puzzle (Advantage)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Other_variations
Moves: 1. e4 Nc6 2. f4 d5 3. e5 Nd4 4. Nf3 Bg4 5. Nxd4 *
Position (FEN): r2qkbnr/ppp1pppp/8/3pP3/3N1Pb1/8/PPPP2PP/RNBQKB1R b KQkq - 0 5
Black to move.
Themes:  Opening  
Puzzle rating: 822
Best move: Bxd1