Yugi continues his duel with Leon, who is using the Golden Castle of Stromberg card that Zigfried gave to him. Leon wants to get rid of the card because its affects and how Zigfried was only helping him cheat. Yugi puts together a strategy to get rid of it by summoning Jack's Knight, Queen's Knight, and king's knight. Then he used a magic card that sacrificed all three monsters in order to summon Royal Card Knight. By discarding a monster, each of the first five levels, the knight can destroy every card on the field, but when the smoke clears it turns out the castle is also immune to monster special abilities as well. But then Yugi points out that because he only has one card in his deck, he can't discard half of his deck to keep the castle on the field, therefore, the castle is ruined. Leon doesn’t want to finish because he felt liked he cheated but Yugi convinces him to continue, and with one card left, Yugi summons Dark Magician and uses Diffusion Wave Motion to destroy all of Leon’s monsters and wipe out his life points. Yugi won the tournament and he hoped to see Leon again so they can duel fair. Afterwards, Yugi and his friends left by private plane to go back home where Yugi hopes to finally recover the pharaoh’s memories.
Yugi affronte Léo en duel et doit trouver un moyen de se débarrasser d'une carte que Zigfried a modifiée pour la rendre invincible. La tâche s'avère difficile.
Il KC Gran Prix si conclude
Mientras el Duelo continúa, el virus sigue expandiéndose. Yugi trata de destruir el "Castillo Dorado de Stromberg" pero es invencible y cada vez se queda sin cartas. Leon se siente muy mal por haber activado esa carta pero Zigfried le ordena continuar. Yugi logra destruir esa carta y Kaiba eliminar el virus. Finalmente, Yugi logra Invocar a "Mago Oscuro" para vencer a Leon y quedarse con el título de campeón mundial.
「シュトロームベルクの金の城」に不正な細工したジークの狙いは、ウイルスで海馬コーポレーションのシステムを破壊することだった。金の城に苦戦する遊戯は維持コストも支払うため、ターン毎にデッキが半減する。
Leon scheint Recht zu behalten: Mit einer einzigen Karte infiziert er alle Duel Disks dieser Welt mit einem Virus, um die Kaiba Corp. so zu zerstören. Wenn es Yugi nicht gelingt, diese Karte zu vernichten, droht das endgültige Aus für Kaibaland.
يواصل يوغي مبارزته مع ليون، الذي يستخدم بطاقة قلعة سترومبيرج الذهبية التي أعطاها له زكفيرد. ليون يريد التخلص من البطاقة بسبب تأثيرها وكيف أن زكفيرد كان يساعده من خلال الغش فقط.
