これ幸さいわい

expression

this is my chance; what an opportunity

An exclamatory phrase used when a favorable opportunity arises, often followed by と or とばかりに to indicate seizing the moment.

• これ幸さいわいとばかりに、彼かれはその場ばを離はなれた。

  Seizing the opportunity, he left the scene.

• 相あい手てのミスを見みて、これ幸さいわいと攻せめ込こんだ。

  Seeing the opponent's mistake, they took the chance and attacked.