diagonal attachment; kosumi-tsuke
A Go term for a diagonal contact play, specifically a move that attaches to an opponent's stone diagonally. Often referred to by the Japanese name in English Go literature.
White played a diagonal attachment.
In this position, the diagonal attachment is the vital point.
Katakana spelling is standard for this Go term; usually written in kana.
Rare kanji form; it is rarely used.
Compound of コスミ (kosumi, 'diagonal move') and ツケ (tsuke, 'attachment'), both Go terms.