Queen's Gambit Accepted: Old Variation, Billinger Gambit

1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bxc4 exd4 5.Qb3 Qe7 6.a3

ECO D20

The Queen's Gambit Accepted: Old Variation, Billinger Gambit is a chess opening line in the Queen's Gambit Accepted complex, reached after 1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bxc4 exd4 5.Qb3 Qe7 6.a3.

It is catalogued under code D20 in the Encyclopaedia of Chess Openings (ECO).

The defining move a3 is chosen by White on move 6.

Study this line with a grandmaster

This position is covered in the Beat the Queen's Gambit Accepted 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.