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ECO D81

ECO D00–D99 — Closed and Semi-Closed Games: 1.d4 d5 queen's pawn openings and the Grünfeld Defense.

1 named opening lines are classified under ECO code D81.

Grünfeld Defense: Russian Variation, Accelerated Variation — 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3