Borg Defense: Borg Gambit

1.d4 g5

ECO A40

The Borg Defense: Borg Gambit is a chess opening line in the Borg Defense complex, reached after 1.d4 g5.

It is catalogued under code A40 in the Encyclopaedia of Chess Openings (ECO).

The defining move g5 is chosen by Black on move 1.

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

• Catalan Opening
• King's Indian Defense with ...e5

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