ECO D26

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

6 named opening lines are classified under ECO code D26.

• Queen's Gambit Accepted: Classical Defense — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5
• Queen's Gambit Accepted: Classical Defense, Normal Line — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O
• Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development Variation — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6
• Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Exchange Variation — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O cxd4
• Queen's Gambit Accepted: Classical, Furman Variation — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.Qe2 a6 7.dxc5 Bxc5 8.O-O Nc6 9.e4 b5 10.e5
• Queen's Gambit Accepted: Normal Variation, Traditional System — 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6