Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Napoleon_Attack
Moves: 1. e4 e5 2. Qf3 Qf6 3. Qc3 b6 4. Qxc7 *
Position (FEN): rnb1kbnr/p1Qp1ppp/1p3q2/4p3/4P3/8/PPPP1PPP/RNB1KBNR b KQkq - 0 4
Black to move.
Themes: Defensive Move Opening  
Puzzle rating: 1849
Best move: Nc6