hyperactive position
Hyperactive is a term coined by Prof. Berlekamp.
A hyperactive position is one whose count depends on who is komaster. Examples: Approach ko, Ten thousand year ko.
An active position is one whose count remains the same no matter who is komaster, but the value of a play differs. (Term coined by Bill Spight.)
A ko whose count does not depend on who is komaster is called placid.
- Karl Knechtel: Why say "hyperactive position" rather than "hyperactive ko"?
- Bill: There are hyperactive positions where a placid ko is threatened.
(Later.) See Some Endgame Problem 4, where no ko is actually played.