Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. dxc5 Bxc5 5. Nc3 Nc6 6. Bb5 Ne7 7. Na4 *
Position (FEN): r1bqk2r/pp2nppp/2n1p3/1BbpP3/N7/8/PPP2PPP/R1BQK1NR b KQkq - 5 7
Black to move.
Themes:  Opening  
Puzzle rating: 1338
Best move: Qa5+