Orlando Chess Open: Hosted by the University Club of Winter Park. Co-organizers: Valencia Chess Club, Florida Junior Chess Club, Orlando Chess Association, Orlando Chess Club. $500 total prize money guaranteed for rated sections.

Proceeds will benefit the Boys and Girls Clubs of Central Florida’s Levy-Hughes Clubhouse. Tournament format: 5 rounds of 25-minute games with 5 seconds of delay. Chess sets are provided, but we are requesting players to bring their chess clocks if you have one.

9 a.m. Aug.

10, The University Club of Winter Park, 841 N. Park Ave., Winter Park, $25-$40, www.

orlandochessopen.org/. Citizen Civics “Examining the Bill of Rights” lecture: Valencia College Professor Tyler Branz will discuss the first amendments to the Constitution, what we call “The Bill of Rights.

” 1-2:30 p.m. Aug.

10, Winter Park Library, Edyth Bush Theatre, 1052 W. Morse Blvd., Winter Park, free, 407-623-3300.

Walk: The Mid-Florida Milers Walking Club, a member of the American Volkssport Association, is sponsoring a walk at Cranes Roost Park in Altamonte Springs. Two distances available: 11K (6.8 miles) or 5K (3.

1 miles). Start between 8:30-9:15 a.m.

Aug. 17, Starbucks in Renaissance Centre, 355 E. Altamonte Drive, #1700, Altamonte Springs, $4 per person, free for walkers ages 12 or younger who do not want credit, midfloridamilers.

org, 917-881-8358. A Night of the Mystical Arts Festival: A festival dedicated to the spiritual, the unexplained, and the impossible. It is Seminole .