A breakthrough in a situation; breaking a deadlock — actions or measures that change and resolve a difficult or stuck situation.
交渉は難航していたが、新案で局面打開に成功した。
Negotiations had been difficult, but the new proposal succeeded in breaking the deadlock.
監督は選手交代で試合の局面打開を狙った。
The coach aimed to change the game's situation by substituting players.
経営陣は売上低迷の局面打開のため、抜本的な改革を決めた。
Management decided on radical reforms to break the deadlock of declining sales.