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ECO D11

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

5 named opening lines are classified under ECO code D11.

Slav Defense: Bonet Gambit — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Bg5
Slav Defense: Breyer Variation — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nbd2
Slav Defense: Modern Line — 1.d4 d5 2.c4 c6 3.Nf3
Slav Defense: Quiet Variation — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3
Slav Defense: Quiet Variation, Pin Defense — 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4