time-stealing tesuji
Difficulty: Introductory Keywords: Tesuji, Strategy
The "time-stealing tesuji" is a colloquial expression that refers to playing in such a way that the opponent is "forced" to use up much time, for example, starting a huge ko or a speculative invasion. This can obviously be useful if the opponent is short on time. There are perennial and unresolved arguments about the ethics of such tactics and how tournaments should address them.
A move that saves the flag from falling is called a time tesuji."