ECO: A06

An opening move in chess begining with White moving his g1 Knight to f3. This is a weak variant of the King's Indian Attack:

1.Nf3 d5
2.e4

A questionable gambit, in the spirit of a reversed Budapest Gambit. With colors reversed, the move c4 has already been played, and the weaknesses it creates are part of the point of the gambit.