Aka：Logic Room - Der Tod ist unberechenbar / Западня Ферма / La habitación de Fermat / La Cellule de Fermat / Kapan / O Quarto de Fermat / 페르마의 밀실 / 极限空间 / 數學謀殺案 / A sala de fermat / Fermatův pokoj / L’habitació de Fermat / ห้องของแฟร์มาต์ / Fermatova soba
Summary：4 mathematicians are invited to solve an enigma. Once there, they're locked in a mechanically shrinking room and given 1 minute to solve each puzzle via cellphone while also figuring out why they're there.
