The Gosei title is decided in a best of five match.
The challenger is decided in a large knockout tournament
starting with about 40 players. The
will give you an idea of the current tournament structure.
The Gosei tournament formula initially consisted of a knockout
preliminaries to qualify for the challenger league. In case of
tied 1st place a challenger playoff would decide the challenger
of the title holder.
is a good example of this formula.
The formula changed again with the
A challenger knockout tournament decides the two players who
will compete in a best-of-three match the challenger for the
The Japanese Title Overview
page shows what's available.