Chess puzzle (Advantage)
Opening: Bishops_Opening, Bishops_Opening_Other_variations
Moves: 1. e4 e5 2. Bc4 Nc6 3. Nc3 Qg5 4. Qf3 Nf6 5. d3 Qg6 6. a3 *
Position (FEN): r1b1kb1r/pppp1ppp/2n2nq1/4p3/2B1P3/P1NP1Q2/1PP2PPP/R1B1K1NR b KQkq - 0 6
Black to move.
Themes:  Opening  
Puzzle rating: 1059
Best move: Nd4