An Ill-Fated Moment
Isumi has gone on undefeated, while Hikaru has lost only one game so far. The time finally comes for them to play each other, and only one of them can win.
Aired 10/07/2002EP 39 - An Ill-Fated Moment

2001
Hikaru no Go
With a two-tone hairstyle and a streak of immaturity, Hikaru Shindou finds an old Go board with a hidden surprise - trapped within the Go Board is Fujiwara-no-Sai, the ghost of an ancient Go master! In the blink of an eye, Sai becomes part of Hikaru's consciousness and soon begins to learn the true essence behind this ancient game of skill and strategy.
(Source: VIZ Media)