A position is overstretched or overdeveloped when the emphasis is too much on development of stones, i.e. on territory or influence, and not enough on the stability of the stones. Mostly their connectivity is low, having too many defects.
- Overdeveloped stones are also called thin.
- Overdeveloped stones are the opposite of overconcentrated stones.
- A Japanese term for overdeveloped stones is amarigatachi, which, as usual with Japanese terms, has a more precise and dynamic notion.
JohnF. Overdeveloped doesn't mean thin or overstretched - the very opposite in fact, and so almost the same as overconcentrated. Two examples of proper usage. (1) Too much cycling gives you overdeveloped calf muscles. Thick, muscle-bound legs, not legs that look like floppy spaghetti. (2) The Costa del Sol is overdeveloped. It has too many buildings crammed together.