Chess puzzle (Crushing)
Opening: Zukertort_Opening, Zukertort_Opening_Other_variations
Moves: 1. Nf3 d5 2. e3 Nf6 3. b3 Bg4 4. Bb2 c6 5. Nh4 *
Position (FEN): rn1qkb1r/pp2pppp/2p2n2/3p4/6bN/1P2P3/PBPP1PPP/RN1QKB1R b KQkq - 1 5
Black to move.
Themes:  Opening  
Puzzle rating: 872
Best move: Bxd1