Chess Opening Theory/1. e4/1...e5/2. Nf3/2...c6

There is not really much to say about this. The Gunderam Gambit, characterized by the move 2...c6!?, is considered a very dubious response to the King's Knight Opening as it blocks the knight on b8 from developing to its natural square, and sacrifices a center pawn for almost no compensation.

1.e4 e5 2.Nf3 c6!?

/3. Nxe5/ /3._g3/