502.7. Players must answer honestly any questions regarding public information.
502.8. Players must not represent public or derived information incorrectly.
502.9. Players must point out discrepancies between announced and recorded public information.
502.10. Judges are encouraged to help players determine public information, but not derived information.
502.11. In 2v2, teammates may share Private information, including directly showing each other the cards in their hand as defined by 484.8.e. in the Core Rules.