According to the official website, NHK announced an original TV anime "Phi Φ Brain ~Kami no Puzzle". The 25 episode series will start next autumn.
Phi Brain official website
Original work: Yatate Hajime
Director: Sato Junichi
Series composition: Sekijima Mayori
Production Studio: Sunrise
Daimon Kaito is a high school boy, who loves puzzles. One day, the president of the student council gives him a mobile device and it leads him to an underground ruin buried in the school. He challenges an " insoluble puzzle" hidden in the ruin with his girlfriend Nonoha, but the puzzle turns out to be a dangerous "The Puzzle of Sage" created by a black society "POG". He manages to solve the puzzle but it's the beginning of the puzzle battle against POG.