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
11 families
ECO A401…Na6Tabiya: 3…d51 linesAustralian Defense
- Semi-closed games
- Offbeat
A knight on the rim at move one
Study opening- ECO A401…e6Tabiya: 4…Be72 lines
Horwitz Defense
- Semi-closed games
- Offbeat
A waiting move: French, Queen's Gambit or Dutch, to be decided later
Study opening - ECO A402…Bb4+Tabiya: 4…d52 lines
Kangaroo Defense
- Semi-closed games
- Offbeat
Check on move two and a flexible plan
Study opening - ECO A401…Nc6Tabiya: 5.Nf34 lines
Mikenas Defense
- Semi-closed games
- Offbeat
The knight steps out before White has shown a plan
Study opening - ECO A402…Nb8Tabiya: 4…e61 lines
Montevideo Defense
- Semi-closed games
- Offbeat
The knight goes out and comes straight back
Study opening - ECO A401…b5Tabiya: 2…Bb72 lines
Polish Defense
- Semi-closed games
- Offbeat
The flank pawn goes first, the centre can wait
Study opening - ECO A404…Ng8Tabiya: 4…Ng81 lines
Zaire Defense
- Semi-closed games
- Offbeat
Two knights stepped out and came straight back
Study opening - ECO A412…Bg4Tabiya: 4…e51 lines
Wade Defense
- Semi-closed games
- Offbeat
The bishop comes out first; the pawns can wait
Study opening - ECO A462…Ne4Tabiya: 4…d51 lines
Döry Defense
- Semi-closed games
- Offbeat
A knight jump to e4 on move two
Study opening - ECO A502…Nc6Tabiya: 4…Bb42 lines
Mexican Defense
- Semi-closed games
- Offbeat
A knight on c6 where a pawn usually goes
Study opening - ECO A563…Ne4Tabiya: 5…Nd61 lines
Vulture Defense
- Semi-closed games
- Offbeat
The knight bolts ahead while everyone else is still at home
Study opening