All subsections
Openings
- Chess Atlas Subsections
- VOL. I • Chess HistoryFrom Chaturanga to Neural Engines
- VOL. II • Classic ChessPieces, Notation & Rules
- VOL. III • Legendary PlayersPantheon of Chess Immortals
- VOL. IV • Great GamesInteractive game studies
- VOL. V • OpeningsOriginal CAISSORA Opening Articles
- VOL. VI • Tactics & StrategyForks, Pins & Board Geometry
Chess Atlas Codex
Codex of Opening Systems
All 126 opening families in one catalogue: search by name, move or player, and filter by the kind of position.
126families
Key set-ups
10 families
ECO C001…e6Tabiya: 7.Be3212 linesFrench Defense
- Semi-open games
- Solid
- Pawn chain
Chain against chain
Study opening- ECO B104…Bf5Tabiya: 7…Nd7110 lines
Caro-Kann Defense
- Semi-open games
- Solid
The bishop first, the pawn after
Study opening - ECO D102…c6Tabiya: 8…Nbd752 lines
Slav Defense
- Closed games
- Solid
A pawn on c6, a bishop at large
Study opening - ECO C41Article2…d6Tabiya: 7…c644 lines
Philidor Defense
- Open games
- Solid
A fortress around e5
Study opening - ECO B011…d5Tabiya: 7…e645 lines
Scandinavian Defense
- Semi-open games
- Solid
The queen goes first
Study opening - ECO C422…Nf6Tabiya: 7…Nc650 lines
Petrov's Defense
- Open games
- Solid
- Symmetry
A counterpunch instead of a defence
Study opening - ECO C473…Nf6Tabiya: 8…Qe749 lines
Four Knights Game
- Open games
- Solid
- Classical
- Symmetry
Four knights, no hurry
Study opening - ECO A502…c6Tabiya: 3…d52 lines
Slav Indian
- Semi-closed games
- Solid
Slav or Indian: Black has not decided yet
Study opening - ECO B073…c6Tabiya: 5…e51 lines
Czech Defense
- Semi-open games
- Solid
A Pirc without …g6: c6 first, the rest later
Study opening - ECO E113…Bb4+Tabiya: 7…Ne421 lines
Bogo-Indian Defense
- Semi-closed games
- Solid
A bishop check that sidesteps the big theory
Study opening