The 7th Cho Chikun Judan Cup 42.195 Marathon Go Championship
Cho Chikun (25th Honinbo)

Cho Chikun Judan

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Popular event 42.195 Marathon Championship was well received so we organize it again this year.
You have 42 days and 19.5 hours to play your games, as many as possible (with a minimum percentage).

However, this year there are some minor changes in the basic rules of Marathon Go Championship: We believe in "Health First" policy. Therefore, the playing time is limited to 8 hours a day (please refer to the details below)

Cho Chikun Judan, the referee of the event always tries to spread the game of Go.

About the tournament
official sponsor:PANDANET
special support:Japan Pair Go Association
Referee:Cho Chikun Judan
Winner:Player with most games and at least 30% winning percentage
Period : July 20th through August 31st (IGS time)
Registration period
Registration period :3rd till 17th of July (IGS Japan Time)
How to register:click the green button above or below
Entry fee:free of charge
Participants:all members of IGS-PandaNet
Tournament rules
In Marathon Go event, you compete for the number of games played in the designated period. However the following games will not be counted:
  • The maximum playing-time per day is 8 hours and any game starting after this time limit will not be counted (In case of a game played over two days in IGS Japan Time, it shall be counted in the date it has started).
  • A game not started within the designated period
  • A game which was interrupted due to disconnection by both players
  • A game played on other than 19x19 board
  • A game played against Robot (Robots' User IDs begin with "Robot")
  • A game that does not meet the following time requirements:
    (1) Pandanet style: at least 5 minutes for 25 moves
    (2) Byoyomi style: at least 20 seconds per move
    (3) No Byoyomi: at least 30 minutes for one game
  • A game with less than 40 moves
  • A game which Organizing Committee considered to be inappropriate

[ Ranking ]

Participants with the winning percentage of 30% or more are subject to the final ranking and the winners will be decided as follows:
  1. A player with largest number of games played, if the tie remains, then:
  2. A player with better winning percentage, if the tie remains, then:
  3. A player with larger moves (the sum of all games), if the tie remains, then:
  4. These players are considered co-winners
The Organizing Committee reserves the right to disqualify any player who is excessively discourteous to other players.
Prizes and prize giving
Prize winner will be announced on the IGS-PandaNet website
A high-ranking prizewinner(1-5 rank) winners will receive a trophee and a diploma signed by Cho Chikun from the Japan Pair Go Association

Result updates
Results will be published once on the PandaNet website in middle of the period
The final results will be published in September
The results will not be subject for any discussions

The deadline for applications has passed.

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