expression
in any game, skill differences can be large
A yojijukugo (four-character idiom) meaning that even in the same game or competition, individual skill levels can vary greatly. Rare and literary; not used in everyday conversation.
「相碁井目」ということわざは、同じ碁を打っていても実力差は大きいという意味だ。
The proverb 'aigo seimoku' means that even when playing the same game of Go, the difference in skill can be substantial.