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ECO A30

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

5 named opening lines are classified under ECO code A30.

English Opening: Symmetrical Variation — 1.c4 c5
English Opening: Symmetrical Variation, Hedgehog Defense — 1.c4 e6 2.Nf3 Nf6 3.Nc3 c5 4.g3 b6 5.Bg2 Bb7 6.O-O Be7
English Opening: Symmetrical Variation, Napolitano Gambit — 1.c4 c5 2.Nf3 Nf6 3.b4
English Opening: Symmetrical, Hedgehog, Flexible Formation — 1.c4 e6 2.Nf3 c5 3.Nc3 Nf6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7
English Opening: Wing Gambit — 1.c4 c5 2.b4