Rat Defense — opening family
11 catalogued lines · ECO A41–C00
♞ View the head line Explore the full tree (11 lines) 🎓 Train this family
The shortest catalogued line of the family runs 1. e4 d6 2. f4 — 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.
Main continuations
All 11 lines
| Name | ECO | Main line length |
|---|---|---|
| Rat Defense: Harmonist | B00 | 3 plies |
| Rat Defense: Petruccioli Attack | B00 | 3 plies |
| Rat Defense: Spike Attack | B00 | 3 plies |
| Rat Defense: English Rat | A41 | 4 plies |
| Rat Defense: Balogh Defense | A82 | 4 plies |
| Rat Defense: Small Center Defense | C00 | 4 plies |
| Rat Defense: Antal Defense | B00 | 4 plies |
| Rat Defense: Accelerated Gurgenidze | B06 | 6 plies |
| Rat Defense: English Rat, Lisbon Gambit | A41 | 6 plies |
| Rat Defense: English Rat, Pounds Gambit | A41 | 6 plies |
| Rat Defense: Fuller Gambit | B00 | 6 plies |