SEATTLE WA. SOUTH SOUND CHESS (USCF ID A7790405). Affiliate Type: Club. South King County Locations, Seattle. Contact Phone: 206-552-8335. Club Phone: ‪(425) 835-2541‬. email: kyle@southsoundchess.com. Web Site: https://www.southsoundchess.com, Casual Play, USCF Rated Events, Blitz Events, Matches, Sets Available, Clocks Available, Under Age 18 Welcome, Beginners Welcome, An informal group of chess players who want to make low-cost (free if possible) USCF rated events available in the South Sound and South Seattle regions of King County!.