ECO volume D
ECO D openings
Closed & semi-closed games (1.d4 d5, Grünfeld). This volume contains 566 exact named move-order records in the reference catalogue. The 7 guides below concentrate on the major families: their characteristic structures, plans for both sides, pawn breaks, piece placement, tactical warnings, and the practical differences between branches.
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Grünfeld Defense
The Grünfeld through pressure on White’s pawn centre, the ...c5 counterstrike, the g7 diagonal, and the tactical targets on d4 and c3.
ECO coverage in this volume: D80, D81, D82, D83, D84 … D96, D97, D98, D99 · 57 exact move-order records
London System
The London System through its d4–e3–c3 triangle, the e4 and c4 breaks, Black’s ...c5 and ...Qb6 pressure, and the adjustments required against a kingside fianchetto.
ECO coverage in this volume: D02 · 1 exact move-order record
Queen's Gambit Accepted
The Queen’s Gambit Accepted through temporary control of c4, White’s e4 centre, Black’s ...c5 and ...e5 breaks, and the structures after recovery of the pawn.
ECO coverage in this volume: D20, D21, D22, D23, D24, D25, D26, D27, D28, D29 · 51 exact move-order records
Queen's Gambit Declined
A guide to Queen’s Gambit Declined structures: the Carlsbad minority attack, central e4 and ...c5 breaks, piece placement, and major branches.
ECO coverage in this volume: D02, D06, D07, D08, D09 … D66, D67, D68, D69 · 171 exact move-order records
Semi-Slav Defense
The Semi-Slav through its d5–c6–e6 triangle, the ...c5 and ...e5 releases, Meran queenside expansion, and the forcing choices after Bg5.
ECO coverage in this volume: D30, D31, D43, D44, D45, D46, D47, D48, D49 · 68 exact move-order records
Slav Defense
The Slav through its supported d5-pawn, active c8-bishop, ...c5 and ...e5 releases, and the practical difference between main-line and Exchange structures.
ECO coverage in this volume: D10, D11, D12, D13, D14, D15, D16, D17, D18, D19 · 52 exact move-order records
Tarrasch Defense
The Tarrasch through its immediate ...c5 challenge, the isolated d5-pawn, active-piece compensation, the ...d4 advance, and White’s blockade strategy.
ECO coverage in this volume: D32, D33, D34 · 26 exact move-order records