碁ご打うちに時ときなし

expression

go players have no concept of time

Proverb meaning that go players become so absorbed in the game that they lose track of time. Rare and somewhat literary.

• 「碁ご打うちに時ときなし」という言こと葉ばがあるように、彼かれは夜よる遅おそくまで碁ごを打うち続つづけた。

  As the saying goes, 'go players have no concept of time,' and he continued playing go late into the night.