Borg Defense — opening family
5 catalogued lines · ECO A40–B00
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; explore the full tree below and play any branch against the engine.
Variations tree of the Borg Defense family
Click any move to jump to that position; switch branches at any point with the alternative moves. Test your knowledge plays the shown position against the engine.
Start
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 |