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ECO E22

ECO E00–E99 — Indian Defenses: 1.d4 Nf6 with the Nimzo-Indian, Queen's Indian, Catalan and King's Indian complexes.

1 named opening lines are classified under ECO code E22.

Nimzo-Indian Defense: Spielmann Variation — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3