New for 2026: As the event growns and to allow everything to run smoothly, we now require that every sumo bot entered has a designated team member running it. The same team member cannot be part of the group running the robot in the Unearthed table runs. This way we do not have people run between table and sumo runs.
Embedded Files
Join us for a fun Saturday at the 7th Annual Atomic City Invitational on January 17, 2026 at Jefferson Middle School, 200 Fairbanks Rd, Oak Ridge, TN 37830. The Invitational offers regional FLL teams to compete in the following events. On site registration will open at 8:30am and the closing ceremony will start at approximately 4:00pm.
Unearthed
Unearthed
This is your chance to try or re-try the Lego Unearthed Challenge. We will run the table competition according to official FLL rules. This gives everyone a chance to be hands on with the robot.
Unearthed - Alliance Challenge
Unearthed - Alliance Challenge
Each alliance has 90 seconds to score as many points on the table as possible running two robots. Each team must use their own team robot. All robots must start in base but they can be picked up at any time without penalty. Each alliance can have 4 people at the table running their respective robots. Two tables will run simultaneously -- four teams / two alliances at a time. Referees add up the points at the end of each match and determine a winner for that match -- no questions asked. Team pairings will be determined based on round one challenge scores. The alliance challenge will run on a single elimination bracket.
Sumo Bot Challenge
Sumo Bot Challenge
Named after the famous Japanese competition, in the Lego Sumo Bot challenge, robots attempt to force one another out of a 4' diameter circular ring (dohyo) by pushing or disabling one's opponent. Please check the competition rules carefully for details on robot design restrictions, weight limits and allowed moves. May the best robot win.
Brick Building Competition
Brick Building Competition
Build your own Leog creation to illustrate a concept or idea you've learned in Science, Art, Math, Reading or Social Studies. Open to all students. Check out the flyer and pre-register at julie@hartye.com.
Volunteers
Volunteers
Thank you so much for your interest in volunteering at the Atomic City Invitational. Please complete this online volunteer registration form and we will contact you with more information as the event gets closer. This event would not be possible without all our wonderful volunteers. Thank you.
Organizers: Janie and Harold Shanafield, Thomas Proffen
Supported by the the Jefferson Middle School FLL Teams
Page updated
Google Sites
Report abuse