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Openings
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- VOL. I • Chess HistoryFrom Chaturanga to Neural Engines
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- VOL. III • Legendary PlayersPantheon of Chess Immortals
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- VOL. V • OpeningsOriginal CAISSORA Opening Articles
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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
65 families
ECO B001…Nh6Tabiya: 5…O-O2 linesHippopotamus Defense
- Semi-open games
- Set-up systems
- Offbeat
A knight on the rim and a bet on patience
Study opening- ECO B001…Na6Tabiya: 3…e61 lines
Lemming Defense
- Semi-open games
- Offbeat
A knight to the rim and a bet on doubled pawns
Study opening - ECO B001…Nc6Tabiya: 5.Be243 lines
Nimzowitsch Defense
- Semi-open games
- Hypermodern
The knight before the pawns
Study opening - ECO B001…b6Tabiya: 4…c58 lines
Owen Defense
- Semi-open games
- Fianchetto
- Hypermodern
A bishop on b7 and a hope that the opponent is unprepared
Study opening - ECO B001…a6Tabiya: 4…e64 lines
St. George Defense
- Semi-open games
- Offbeat
Give up the centre and strike from the wing
Study opening - ECO B001…a5Tabiya: 3…Bb72 lines
Ware Defense
- Semi-open games
- Offbeat
A rook pawn move in place of a fight for the centre
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 B073…Nbd7Tabiya: 6…c66 lines
Lion Defense
- Semi-open games
- Hypermodern
A Philidor that came in through the Pirc door
Study opening - ECO C402…d5Tabiya: 4…Nf64 lines
Elephant Gambit
- Open games
- Gambits
- Sharp play
- Open centre
A big bite with nothing behind it
Study opening - ECO C402…Qe7Tabiya: 4…d61 lines
Gunderam Defense
- Open games
- Offbeat
The queen guards the pawn and blocks the bishop
Study opening - ECO C402…f5Tabiya: 6…Qg626 lines
Latvian Gambit
- Open games
- Gambits
- Sharp play
A King's Gambit in reverse, and a move late
Study opening - ECO D323…c5Tabiya: 7…Be727 lines
Tarrasch Defense
- Closed games
- Sharp play
- Isolated pawn
A weak pawn for free pieces
Study opening - ECO D7016 lines
Neo-Grünfeld Defense
- Semi-closed games
- Fianchetto
- Hypermodern
Study opening - ECO E104…b5Tabiya: 6…d54 lines
Blumenfeld Countergambit
- Semi-closed games
- Gambits
- Sharp play
A wing pawn for the centre
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