Schulze-Müller Gambit

The Schulze-Müller Gambit gives up a knight for a single pawn with 3. Nxe5 and follows with 4. d4, building a broad pawn center while gaining a tempo on the black knight. Black usually retreats with 4...Ng6 or 4...Nc6. After 4...Nc6 5. d5 Ne5 6. f4 the knight is driven back and still ends up on g6. The engine gives Black a large advantage, and Black also scores well in practice.