Plain-English Definition
Development is a dynamic imbalance. If you do not use it quickly, the opponent will finish development and the edge disappears.
Why It Matters
It explains why time can outweigh material in openings.
Common Signs in Games
- Opponent king remains in the center.
- Your pieces can open lines with tempo.
- A pawn break punishes slow development.
Common Mistakes
- Winning a pawn while the attack evaporates.
- Trading active pieces too early.
- Letting the opponent castle for free.