First line
Path: Know Your Lines =>
Keywords: Go term
The first line is the entire outside line defining the playing area on the go board.
A play on the first line is rarely good by itself. Such plays are made, usually, in combination with existing stones on the second line. Playing unsupported stones on the first line is a typical novice's mistake (or a clicko, as in the case of Shin Jinseo's first line move in the final of the 2020 Samsung Cup).
Plays on the first line become common during endgame, and in life and death
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