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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...c6
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Gunderam gambit C40 King's knight opening
2...c6?! · Gunderam gambit
There is not 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.
/3. Nxe5/ is the most critical move. White captures a free pawn and challenges Black to prove compensation. However, there is one trap. After 3...Nf6, a careless 4. d3?? loses to 4...Qa5+! forking king and knight.
/3. Bc4/ fails to capitalize on Black's weak move. This is surprisingly the most common amateur move.
/3. g3/ is a sideline which tries to fianchetto the bishop despite it already having a clear diagonal.
References
See also