Watch Fermat's Room (2007) HD Full Movie Free on solarmovie.do. Watch Fermat's Room (2007) online free. 4 mathematicians are invited to solve an enigma. Once there, they're locked in a mechanically shrink...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.