Coordination

Pieces have coordination when they support one another and work toward a common objective. Two pieces may be individually active yet poorly coordinated if they attack different areas, obstruct each other, or leave a weakness undefended. The quality of the group matters more than the appearance of one piece.

Coordination appears when several pieces converge on a king or weak pawn, when defenders protect one another, or when one piece controls the square another needs. It also requires clear routes: a rook trapped behind friendly pieces contributes little even if it is protected. Good coordination often sustains a dynamic advantage, a temporary edge based on activity, because threats can arrive quickly.

How to improve it

• Identify the least useful piece and give it a productive role.
• Open or clear lines, such as files and diagonals, without creating a larger weakness.
• Use a maneuver, a sequence that reroutes a piece, when no direct path exists.
• Make sure an attempt at restriction, intended to limit the opponent's options, does not disconnect your own pieces.

Coordination is always task-specific. The best arrangement for defense may not be the best for attack. When the objective changes, the network of support must change as well.