A move made by one player (especially in the context of the analysis of play made by a chess-playing computer program).
〔棋〕一方棋手所走的一步（尤指计算机下棋程序分析棋局时用语）
Example sentencesExamples
In other words, there is no sense looking 10 ply (half-moves) down a line where the 3rd or 4th reply is implausible instead of considering either.
Change its thinking depth to one or two ply (half-moves) or only a few seconds (Menu ‘Play’ ‘Set up Game Details’ use ‘Different Time Controls’ and set them to a low value).
Definition of half-move in US English:
half-move
nounˈhafˌmo͞ov
Chess
A move made by one player (especially in the context of the analysis of play made by a chess-playing computer program).
〔棋〕一方棋手所走的一步（尤指计算机下棋程序分析棋局时用语）
Example sentencesExamples
In other words, there is no sense looking 10 ply (half-moves) down a line where the 3rd or 4th reply is implausible instead of considering either.
Change its thinking depth to one or two ply (half-moves) or only a few seconds (Menu ‘Play’ ‘Set up Game Details’ use ‘Different Time Controls’ and set them to a low value).