double ko
A Go term for a situation where two separate ko fights exist simultaneously on the board, often leading to complex strategic implications.
See also: 紅
This position has become a double ko, and the game won't be decided until one of them is resolved.
Double ko is a rare shape and is seldom seen even in professional games.
Kanji spelling using 劫 for ko; less common than the mixed-katakana form.
Compound of 両 (ryō, 'both') and コウ (kō, 'ko'), a Go term referring to a repeated capture situation. The exact origin of コウ is uncertain, but it is a specialized term in the game of Go.