Chess puzzle (Advantage)
Opening: Zukertort_Opening, Zukertort_Opening_Black_Mustang_Defense
Moves: 1. Nf3 Nc6 2. e3 e5 3. Bc4 e4 4. Bxf7+ *
Position (FEN): r1bqkbnr/pppp1Bpp/2n5/8/4p3/4PN2/PPPP1PPP/RNBQK2R b KQkq - 0 4
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 891
Best move: Kxf7