Ouza

Ouza
Title
王座
Established
1952
Title Matches Played
October through December
Sponsor
Nihon Keizai Shinbun
Affiliation
Nihon Ki-in
Kansai Ki-in
Purse
¥14,000,000
Best of
5
Time Allotted (Title)
3 hours
Byouyomi (Title)
5 minutes
Time Allotted (League)
-
Byouyomi (League)
-


Tournament

The Ouza tournament is a Japanese professional go competition featuring a challenge against the Ouza for his title.

C through B Preliminaries

Players from the Tokyo main branch of the Nihon Ki-in compete in a set of single-knockout preliminaries, advancing from C to B. The top 26 players qualify for the A preliminary.

Players from the Kansai Ki-in and the Chuubu branch of the Nihon Ki-in compete in a separate set of single-knockout preliminaries, advancing from C to B. The top 10 players qualify for the A preliminary.

A Preliminary

50 players from the Tokyo main branch of the Nihon Ki-in's B preliminary compete in a single-knockout preliminary. The top 13 players advance to the last preliminary.

19 players from the Kansai Ki-in and the Chuubu branch of the Nihon Ki-in's A preliminary compete in a separate single-knockout preliminary. The top 5 players advance to the last preliminary.

Last Preliminary

The last preliminary is a single-knockout tournament comprised of 34 players, including:

  • The 13 players who qualified in the A preliminary held by the Nihon Ki-in for players of its Tokyo main branch.
  • The 5 players who qualified in the A preliminary held jointly by the Kansai Ki-in for its players and the Nihon Ki-in for the players of its Chuubu branch.

The top 11 players progress to the main tournament.

Main Tournament

The main tournament is a single-knockout tournament comprised of 16 players:

  • The 11 players who qualified in the last preliminary

The winner advances to the title challenge.

Title Challenge

The winner of the playoff challenges the Ouza for his title in a best-of-5 series. The winner of the series gains (or retains) the title of Ouza, and will await next year's challenger.

Title

"Ouza" may be assumed as an honourary title by players who have won the title 10 times in a row, or at the age of 60 or at retirement by players who have mounted 5 successful sequential defences of the title.

Progression

It takes 21 months to progress from Preliminary C to the final title match.

  • Preliminary C
    • April through June (first year)
  • Preliminary B
    • July through September (first year)
  • Preliminary A
    • October through December (first year)
  • Last Preliminary
    • January through March (second year)
  • Main Tournament
    • April through September (second year)
  • Title Matches
    • October through December (second year)

Schedule

January Last Preliminary
February Last Preliminary
March Last Preliminary
April C Preliminary Main Tournament
May C Preliminary Main Tournament
June C Preliminary Main Tournament
July B Preliminary Main Tournament
August B Preliminary Main Tournament
September B Preliminary Main Tournament
October A Preliminary Title Matches
November A Preliminary Title Matches
December A Preliminary Title Matches

Titleholders

Title Challengers

References