International Conference on Combinatorial Game Theory in Japan
March 19–22, 2026 | Waseda University, Tokyo, Japan
Welcome to CGT Japan 2026!
Welcome to CGT Japan 2026! This is the first international conference on Combinatorial Game Theory to be held in Japan.
We welcome original research in all areas of Combinatorial Game Theory, including, but not limited to, its connections with algorithms, computational complexity, informatics, economics, education, history, and related fields. We look forward to your participation!
Latest News
Quick Links
📝 Registration
The registration fee is free.The dinner fee will be approximately JPY 3,000–7,000 per person.
Details about the venue and the dinner fee will be announced soon.
🎤 Invited Speakers
📢 Call for Talks
📅 Program
Coming Soon！
📍 Venue&Accomodation
🔗 Contact
For all inquiries, please use the contact form 👉 [click here]
Important Dates
Presentation application deadline: December 31
Abstract submission deadline: December 31
Conference dinner registration deadline: December 31
General registration deadline: February 28
Invited Talks
Name: Urban Larsson
Affiliation: IEOR, IIT Bombay
Talk Title: Additive Sink Subtraction
Name: Ryohei Miyadera
Affiliation: Keimei Gakuin Junior & Senior High School
Talk Title: Twenty Years of My Research on Combinatorial Game Theory with High School Students
— Chocolate Games, Games with a Pass, and Variants of Wythoff’s Game —
Name: Ko Sakai
Affiliation: Kanagawa University
Talk Title: TBA
Name: Carlos Pereira dos Santos
Affiliation: ISCTE – University Institute of Lisbon & NovaMath, FCT NOVA, Portugal
Talk Title: The Discovery of the Surreal Numbers
Name: Takenobu Takizawa
Affiliation: Waseda University
Talk Title: Mathematical Go Endgames
— Some Rogue Positions —