noun
fast go; speed go
A variant of the board game Go played with very short time limits, emphasizing quick thinking.
早碁の大会では、一手10秒で打たなければならない。
In a fast go tournament, you must play each move within 10 seconds.
彼は早碁が得意で、短時間で的確な手を打つ。
He is good at fast go, making accurate moves in a short time.