CLAYTON CA. CONTRA COSTA CHESS CLUB (USCF ID A6024746). Affiliate Type: Club. Wednesdays 6:00 pm - 9:00 pm. STARBUCKS, 1536 KIRKER PASS RD, CLAYTON. Contact: John Treshler. Contact Phone: 925-334-0081. Club Phone: 925-334-0081. Address: 1508 HAVILAND CT, CLAYTON, CA, 94517. email: jtresbienxxx@aol.com. Web Site: www.ccchess.com, Club Membership Not Required, Casual Play, USCF Rated Events, Blitz Events, Matches, Clocks Available, Private Lessons Offered, Simuls Offered, Under Age 18 Welcome, Beginners Welcome, Refreshments, Handicap Accessible