Phi Brain: Kami no Puzzle (ファイ・ブレイン 神のパズル) is a 2011 Japanese anime television series produced by Sunrise which will air on The Public Television Network, NHK-Educational, in October 2011. The series is directed by Junichi Sato with script supervision by Mayori Sekijima. Hajime Yatate, the collective pen-name for the creative staff at Sunrise, is credited for the original story. The official site of Phi Brain has unveiled the first intro theme; Brain Diver.
Kaito Daimon, a puzzle-loving high school freshman, is selected as a candidate for "Phi Brain". He and his friend Nonoha find an "unsolvable puzzle" near their school. The puzzle turns out to be a life-threatening "Philosopher's Puzzle" created by the mysterious group POG. After successfully solving the puzzle, Kaito designates himself as a Solver and is joined by other Solvers as they battle POG all over the world by solving other "Philosopher's Puzzles".