U++ Sumobot, using compact large wheel design and
sloping front and back panels. Outstanding design adapted from a book.
KingBot Sumobot, using classic "tankbot" design

Closeup of
KingBot reduction gearing system. Nice!
Quit Now... We Won Sumobot, their narrow robot was
difficult to push from the side.
Team Grievous Sumobot, which used the "wait for contact
before attack" strategy.
The has an outstanding "worm gear" design. Best gear system I've seen.
The Karel heading toward the ring boundary.
Pastor downloading a fresh java program.
Robot.win() ready for battle.
Null String downloading code.