Borg Defense — opening family
5 catalogued lines · ECO A40–B00
♞ View the head line Explore the full tree (5 lines) 🎓 Train this family
The shortest catalogued line of the family runs 1. d4 g5 — the position below. The continuation chips count how many catalogued lines extend this head with each next move; any branch can be explored on the interactive tree and played against the engine from there.
All 5 lines
| Name | ECO | Main line length |
|---|---|---|
| Borg Defense: Borg Gambit | A40 | 2 plies |
| Borg Defense | B00 | 2 plies |
| Borg Defense: Zilbermints Gambit | B00 | 4 plies |
| Borg Defense: Borg Gambit | B00 | 4 plies |
| Borg Defense: Troon Gambit | B00 | 6 plies |