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ECO A35

ECO A00–A99 — Flank openings: 1.c4, 1.Nf3, 1.f4 and other first moves, plus early Indian and Benoni systems.

3 named opening lines are classified under ECO code A35.

English Opening: Symmetrical Variation, Four Knights Variation — 1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6
English Opening: Symmetrical Variation, Four Knights Variation, Keres-Parma System — 1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.g3 e6
English Opening: Symmetrical Variation, Two Knights Variation — 1.c4 c5 2.Nc3 Nc6