World Championship Challenge

▼Tournament Outline ▼Pre-registration ▼On-site Registration ▼Post-Declaration Process

Tournament Outline

Tournament System

The winner will be determined as the highest-ranking player among the "Monaco Declaration" participants in the "Japan Open 2025."
However, if the top two players have the same number of match wins in the "Japan Open 2025," a championship match will be held.

Monaco Declaration:
Players can declare participation at the time of application for the "Japan Open 2025."
The list of declared participants will be published after the registration deadline.

Match Format

If a championship match is required
9-point match
18 minutes & 12 seconds delay
Eligible for JBS rating matches

Schedule

Registration Period
Pre-registration: April 1, 2025 – April 28, 2025
On-site registration: May 3, 2025
Championship Match (if necessary): May 5, 2025

Eligibility

Only JBS members are eligible.
Associate members and visitors are not allowed to participate.

Entry Fee

JBS Members
¥20,000

Prizes

Champion
The prize will be awarded upon confirmation of participation.
¥600,000 support fund for participation in the "World Championship 2025"

Pre-registration

Registration Period

April 1, 2025 – April 28, 2025
Register via this special website.

How to Apply

Submit the declaration along with the pre-registration for the "Japan Open 2025."

On-site Registration

Registration Period

May 3, 2025, 10:30 AM – 1:00 PM
Conducted at the "BACKGAMMON FESTIVAL" general reception

Entry Procedure

Apply together with the "Japan Open 2025."
Fill out the registration form with your name and pay the declaration fee.
Only cash payments are accepted.

Post-Declaration Process

Confirmation of Declaration Registration

At 1:00 PM on May 3, 2025, the final list of "Monaco Declaration" participants will be published on this special website.
Please verify that your name is listed. If your name is missing, please contact the event committee immediately.

Championship Match (if necessary)

If a championship match is required, the event committee will notify the eligible participants.
Potential participants should remain at the venue.

The match will begin as soon as both players are present.
The winner must report the result to the event committee.

Awards Ceremony

The champion will be awarded at the ceremony starting at 6:50 PM on May 5, 2025.
Please attend.