Chess puzzle (Crushing)
Opening: English_Opening, English_Opening_Caro-Kann_Defensive_System
Moves: 1. c4 c6 2. Nc3 Nf6 3. d4 d5 4. e3 Bg4 5. f4 *
Position (FEN): rn1qkb1r/pp2pppp/2p2n2/3p4/2PP1Pb1/2N1P3/PP4PP/R1BQKBNR b KQkq - 0 5
Black to move.
Themes:  Opening  
Puzzle rating: 898
Best move: Bxd1