External and Internal Ko
Keywords: Theory
Preliminary Definitions
The locale of a ko is the set of its and its adjacent intersections.
For a ko, a closed killer is a closed player who moving first can virtual-force uncapturable life of his on the ko.
For a ko, a strong killer is a closed player who moving first can virtual-force uncapturable life of his on the locale.
Definitions of Ko Types
A ko is external if a closed killer exists that is not a strong killer.
A ko is internal unless it is external.
Links
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