WELCOME TO CHESSATHON

PLAY COMPETE ENJOY REPEAT

Chess Tournaments for Bay Area Kids

USCF-rated tournaments, board game nights, and community events for grades K-8. All levels welcome, including first-timers.

USCF-Rated - Official ratings for rated sections

International-Arbiter

Events overseen by IA Abel Talamantez

Marin-County

Hosted at The Branson School

Grades K-8

Four sections by grade level

Next Tournament

Sunday, October 18, 2026

10:00 AM to 3:00 PM

Branson School

All levels welcome
K-8

Four rounds, Swiss system, G/30;d5. USCF rated.

K-1Grades. 2-4Grades 5-8Grades. Open (rated)

Trophies for top finishers in every section, plus prizes and a medal for every player.

TOURNAMENT DETAILS

This tournament is also a fundraiser

100% of donations go to rebuilding earthquake-damaged schools in rural Risaralda, Colombia, a cause our founder saw firsthand this summer.

READ WHY

Chess is better with a crowd

Chessathon brings kids together through community events where they can play, learn, and compete.

We host tournaments, board game nights, and special chess events across the Bay Area. Each one gives kids a chance to challenge themselves, build confidence, and enjoy the game.

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Founded by a player who competes

Chessathon was started by Sebby Suarez, a junior at The Branson School, the reigning 10th grade National Champion, ranked #8 in the United States in his age group and among the top 80 juniors worldwide.

READ SEBBY STORY

Chessathon Foundation / Mill Valley

Chessathonfoundation@gmail.com

Chessathon is a 501(c)(3) tax-exempt nonprofit organization. EIN: 42-3231726. Donations are tax-deductible to the extent allowed by law.