The Fried Liver Attack is a wild variation in which White sacrifices a knight in exchange for a dangerous -- if not completely sound -- attack. The diagram above is a key position in the Fried Liver Attack, and is reached by the moves 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+.