noun
joseki; standard sequence of moves
Go term: a well-studied, locally optimal sequence of moves, especially in a corner.
この定石はプロの対局でもよく使われる。
This joseki is often used even in professional games.
noun
standard practice; established tactic; formula
Figurative extension from Go: a conventional, reliable way of handling a situation.
There is a standard approach to solving this problem.
彼は定石通りに交渉を進めた。
He proceeded with the negotiation by the book.