Chess puzzle (Crushing)
Opening: Russian_Game, Russian_Game_Modern_Attack
Moves: 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Qxd4 Nc6 5. Qc3 *
Position (FEN): r1bqkb1r/pppp1ppp/2n2n2/8/4P3/2Q2N2/PPP2PPP/RNB1KB1R b KQkq - 2 5
Black to move.
Themes: Pin Opening  
Puzzle rating: 1464
Best move: Bb4