Restriction

Restriction reduces the opponent's useful options. It may limit a piece's mobility, prevent a pawn break, an advance or capture that changes the pawn formation, deny an important square, or cut down counterplay, meaning active chances to create threats. A restricted piece may still have legal moves, but none of them meaningfully improves its position.

Common methods

• Control the squares a piece needs in order to become active.
• Fix a pawn so it cannot advance or free itself easily.
• Create a blockade by placing a piece in front of a pawn to stop its advance.
• Exchange the opponent's active piece and leave the remaining pieces with few useful roles.
• Occupy an outpost, a protected square in enemy territory that opposing pawns cannot easily attack.

Restriction is strongest when it is stable and your own pieces can keep improving. If it requires too many passive defenders or unsupported pawn advances, it may turn against the restricting side. Coordination, the way several pieces support one another in a common task, is essential: they should maintain control without becoming tied to one role.

Prophylaxis, anticipating an opponent's plan in order to prevent it, often reveals which plan should be restricted. The aim is not to stop every move, but to remove the opponent's most useful resources while preparing your own operation. A weak square, one that pawns cannot defend easily, may serve as an entry point for a restricting piece or as the escape square the opponent is trying to reach.