G410       No de-scoring. A ROBOT may not de-score a CORAL scored on the opponent’s REEF.

G406       *ROBOTS: use SCORING ELEMENTS as directed. A ROBOT may not deliberately use a SCORING ELEMENT in an attempt to ease or amplify a challenge associated with a FIELD element.

G409       1 of each at a time. A ROBOT may not simultaneously CONTROL more than 1 CORAL and 1 ALGAE either directly or transitively through other objects. A ROBOT is in CONTROL of a SCORING ELEMENT if

G421       1 defender at a time. No more than 1 ROBOT may be on the opponent’s side of the FIELD (i.e. containing the opponent REEF) with its BUMPERS fully outside and beyond the BARGE ZONES.