ECO A35
3 named openings and variations are classified as A35. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- English Opening: Symmetrical Variation, Four Knights VariationA351. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6
- English Opening: Symmetrical Variation, Four Knights Variation, Keres-Parma SystemA351. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 e6
- English Opening: Symmetrical Variation, Two Knights VariationA351. c4 c5 2. Nc3 Nc6