二に段だんバネ

noun

double hane

A Go move where a player plays a hane (a diagonal attachment) on both sides of an opponent's stone, often used to apply pressure or build influence.

See also: ハネ

• この局きょく面めんでは二に段だんバネが有ゆう効こうな手てだ。

  In this position, a double hane is an effective move.