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The position
What English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense puts on the board
Material is level, with white to move.
Black has central pawns on d5.
White can still castle either side; Black can still castle either side.
White’s plan
What White is trying to build
Develop naturally while preserving pressure on d5.
Use cxd5 or e4 only when the resulting centre suits the pieces.
Black’s plan
How Black challenges it
Develop the light-squared bishop outside the pawn chain when the move order allows.
Prepare …c5 or …e5 to free the position.
The idea
The tactical pattern to recognise
The c4 pawn can be taken, but holding it may cost development.
Breaks on c5 and e5 determine whether Black’s position stays cramped.
The mistake
What to check before committing
Winning c4 and then spending too many tempi defending it.
Closing in the c8 bishop without a route back into the game.
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Reference links and alternate move orders
Related variations
- English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3
- English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit
- English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto
- English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation
- English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System
- English Opening: King's English Variation, Closed System, Full Symmetry
- English Opening: King's English Variation, Four Knights Variation, Bradley Beach Variation
- English Opening: King's English Variation, Four Knights Variation, Fianchetto Line
- English Opening: King's English Variation, Four Knights Variation, Flexible Line
- English Opening: King's English Variation, Four Knights Variation, Korchnoi Line
- English Opening: King's English Variation, Four Knights Variation, Quiet Line
- English Opening: King's English Variation, Two Knights Variation, Fianchetto Line