Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Qxd4 Nc6 5. Qc3 Nf6 6. e5 *
Position (FEN): r1bqkb1r/pp1p1ppp/2n1pn2/4P3/8/2Q2N2/PPP2PPP/RNB1KB1R b KQkq - 0 6
Black to move.
Themes: Pin Opening  
Puzzle rating: 1539
Best move: Bb4