King's Gambit Accepted: Allgaier, Schlechter Defense

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 Nf6

ECO C39

The King's Gambit Accepted: Allgaier, Schlechter Defense is a chess opening line in the King's Gambit Accepted complex, reached after 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 Nf6.

It is catalogued under code C39 in the Encyclopaedia of Chess Openings (ECO).

The defining move Nf6 is chosen by Black on move 5.

Study this line with a grandmaster

This position is covered in the King's Gambit course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.