Katsura reveals to Kondo that he got himself caught on purpose, and tells him about his ingenious scheme.
The rock I dug out of the flooring in 
preparation for the escape sure came in handy.
أفدتني الصخرة التي استخرجتها من الأرض عندما كنت أستعد لهروبنا
La piedra que arranqué del piso
para intentar escapar fue útil.
A rocha que eu cavei do piso, em 
preparação para uma fuga veio a calhar.