Business Sponsors

tesuji.net is a proud Platinum sponsor of the 2026 US Go Congress.

PlayGo is building the premier online platform for Go, with the goal of becoming the “Chess.com for Go.” One of our core missions is to transform Go into a compelling spectator sport that can reach mainstream audiences. To that end, we regularly host online showcase matches featuring the world’s top professional players. Our most recent event featured a showdown between world #1 Shin Jinseo and world #2 Ding Hao. You can learn more about our tournaments and upcoming events on our Events page. 

Eric’s Go Shirts

Fun and original tees made for the Go community.

Sold and worn at the US Go Congress!

The Yushima Go Cafe offers casual play, beginner-friendly lessons, and a strong sense of community. Open Wednesday through Saturday, it provides both in-person and online programs for adults and children, including group classes, private instruction, and correspondence-based tutoring.

The cafe also runs online leagues, regular tournaments, and unique social events that blend go with food, music, and Japanese culture. Whether you’re looking to study seriously or just enjoy a friendly game over drinks, it’s a great place to connect. English-friendly, with flexible scheduling and a laid-back vibe.

Kifubara is a free set of tools to organize, analyze and review your games. It includes a searchable database of categorized professional games with KataGo analysis, study tools, and casual play — against bots, or in the ongoing Hot Potato matches.

We’re glad to support the US Go Congress this year. Enjoy the games!

BetterBaduk is a new go server where you can play on OGS and KGS with a unified interface, record your tournament games, and analyze them with KataGo for free.