The U.S. Chess Championship is an annual tournament that determines the national champion of chess in the United States. It features top players from across the country, including grandmasters and rising stars, competing in a series of games. The event is organized by the Saint Louis Chess Club and has been held since 1938, showcasing the best talent in American chess. The championship typically follows a round-robin format, where each participant plays against every other player. The winner is awarded the title of U.S. Chess Champion and often earns a spot in international competitions, further promoting chess in the U.S.