Phi Brain: Kami no Puzzle
English title: Phi-Brain ~ Puzzle of God
Japanese title: ファイ・ブレイン 神のパズル
Alternative titles: Phi Φ Brain: Kami no Puzzle
Type: TV
Source: Original
Episodes: 25
Status: Finished Airing
Aired: Oct 2, 2011 to Apr 1, 2012
Broadcast: Sundays at 17:30 (JST)
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Sunrise
Producers: NHK
Licensors: Sentai Filmworks
Genres: Action, Mystery, Suspense
Themes: High Stakes Game, Strategy Game

Kaito Daimon would be a completely average high school student except for one thing: he's a "demon" at solving puzzles. Kaito is so brilliant, in fact, that when he's asked to take some 'special' tests of his unique ability, he immediately suspects that the test itself is a test. Kaito suddenly finds himself caught up in a lethal Philosopher's Puzzle made by the sinister group POG, a murderous maze of trap upon trap, where failing to solve the secret correctly will result in death! Fortunately, Kaito's skills prove up to the first test, both for himself and his childhood friend Nanoha, who is also caught up in the deadly scheme. But now that he has been designated as a Solver, he is pulled into a new life where he must travel the world with other Solvers, attempting to solve the latest deadly riddles left by POG. There's a new conundrum around every corner and each deception could lead to death, but once a riddle has been posed, you can count on Kaito to unfold, unravel and unlock it!

(Source: Sentai Filmworks)