Checkmate

Amy tries to teach Serena chess- - unsuccessfully. After the lesson, she headed for Chess Tower. Birdie is the only sister to express concern over Catsy. Rubeus sends her to convert the crystal point at Chess Tower. Lyta and Serena accompany Amy to Chess Tower, a chess-themed museum and tournament house. Amy is a member and friends with the owner. He's confident Amy will win the upcoming tournament, just as Birdie files her application. Amy spots Birdie sneaking into the tourney room and confronts her. Birdie blasts her with a freeze attack. To counter it, Amy becomes Sailor Mercury. When Jupiter joins the attack, Birdie leaves. At the spaceship, Avery and Prisma tease Birdie over her defeat. The day of the tourney, the girls come to cheer Amy on. Catsy is with them and recognizes Birdie. Amy meets Birdie in the finals, though Birdie is in disguise. Birdie substitutes rigged pieces. Birdie is winning until she makes a mistake, allowing Amy to check. Transforming to her Negamoon form, Birdie destroys the TV monitors and attacks. The Scouts go to help, but Birdie traps them in an energy bubble. She'll release them only if Mercury can beat her in the chess game. However, for every piece Mercury loses, a part of her body becomes frozen. Avery and Prisma show up to watch. Mercury continues doggedly on until a red rose shatters the board and frees the Scouts. Avery and Prisma abandon Birdie to the Scouts. Angry at the betrayal, Birdie tries to destroy the scouts and her with her own ice powers. Catsy manages to talk her out of it. Birdie begs Sailor Moon to turn her human like Catsy and Sailor Moon eagerly agrees.

Serena/Sailor Moon, Luna, Amy/Sailor Mercury, Raye/Sailor Mars, Makoto (Lita)/Jupiter, Mina/Sailor Venus, Darien/Tuxedo Mask, Rubeus, Catsy, Birdie, Avery, Prisma

This is an English reworking of Japanese episode number 71.