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ECO D09

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

4 named opening lines are classified under ECO code D09.

Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation — 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3
Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line — 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Be6
Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line — 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bf5
Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 Line — 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bg4