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Openings

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

Type

First move

Played with

Has a study11

11 families

ECO E616…e5Tabiya: 8…Ne7119 lines
King's Indian Defense
- Semi-closed games
- Fianchetto
- Sharp play
- Closed centre
Let White build the centre: it will become a target
Study opening
ECO D80Article3…d5Tabiya: 6…Bg759 lines
Grünfeld Defense
- Semi-closed games
- Sharp play
- Big pawn centre
- Hypermodern
Give up the centre, then take it apart
Study opening
ECO D434…e6Tabiya: 9…c570 lines
Semi-Slav Defense
- Closed games
- Sharp play
The bishop is shut in, but not for long
Study opening
ECO A801…f5Tabiya: 6…d669 lines
Dutch Defense
- Semi-closed games
- Fianchetto
- Sharp play
- Closed centre
One pawn step, and e4 is in the fist
Study opening
ECO A565.cxd5Tabiya: 7…Bg761 lines
Benoni Defense
- Semi-closed games
- Sharp play
- Asymmetry
White gets the centre, Black gets the wing and the diagonal
Study opening
ECO A573…b5Tabiya: 8…g624 lines
Benko Gambit
- Semi-closed games
- Gambits
- Sharp play
- Asymmetry
A pawn for open files
Study opening
ECO A401…e5Tabiya: 6.Nc316 lines
Englund Gambit
- Semi-closed games
- Gambits
- Sharp play
A pawn on credit, the queen on a raid
Study opening
ECO D004.f3Tabiya: 5…c649 lines
Blackmar-Diemer Gambit
- Closed games
- Gambits
- Sharp play
- Big pawn centre
A pawn for time and an open f-file
Study opening
ECO D013.Bf4Tabiya: 4…Na64 lines
Rapport-Jobava System
- Closed games
- Sharp play
- Set-up systems
A London with a knight eyeing c7
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 E104…b5Tabiya: 6…d54 lines
Blumenfeld Countergambit
- Semi-closed games
- Gambits
- Sharp play
A wing pawn for the centre
Study opening