King's Gambit Accepted: Allgaier, Cook Variation

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.d4 d5 8.Bxf4 dxe4 9.Bc4+ Kg7 10.Be5+

ECO C39

The King's Gambit Accepted: Allgaier, Cook Variation 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 h6 6.Nxf7 Kxf7 7.d4 d5 8.Bxf4 dxe4 9.Bc4+ Kg7 10.Be5+.

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

The defining move Be5+ is chosen by White on move 10.

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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.