Dr. Alexey Root showed the Greenhill School chess club students the rules for Battleship Chess, which is a drill from her first book Children and Chess: A Guide for Educators. As students played battleship chess with each other, Dr. Root pulled aside one student at a time for individual testing. She individually tested beginners on the king and two rooks checkmate.

 Dr. Root individually tested the intermediate students on the king and queen versus king checkmate and the advanced students on the king and rook versus king checkmate.