hyperactive position

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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.

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.


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