ChessRanger
Strategy

Restriction

Limiting the mobility of an enemy piece — especially a knight — before you attack it.

Nimzowitsch's principle: before you win a piece or a square, first restrict the opponent's ability to do anything about it. Take away a knight's good squares with your pawns, and it becomes a spectator.

Restriction and prophylaxis go together: you make the opponent passive, then convert the bind at leisure.

Why it matters

Positional wins usually come from restriction first — a cramped opponent runs out of useful moves and eventually cracks.

The mistake everyone makes

Rushing to attack a piece that still has good squares, when a quiet restraining move would have left it with nowhere to go.

Related terms

Prophylaxis
Preventing the opponent's ideas before pursuing your own.
Outpost
A square in or near enemy territory, protected by a pawn, where a piece can sit untouchable.
Weak square
A square that can no longer be defended by a pawn, inviting an enemy piece to settle there.
Overprotection
Defending a key point more times than strictly necessary so the pieces doing it gain strength.

See Restriction in your own games

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