The second season of Phi Brain: Kami no Puzzle.
 
The puzzles get tougher and even more deadly as Kaito Daimon continues his battle against the power hungry Givers of the POG. And with one team member already switching sides, will Kaito have what it takes to keep solving the deadly puzzle traps put before him and reach the fabled Puzzle of God? More importantly, will he be able to solve the puzzles AND maintain his sanity? 
(Source: Sentai Filmworks)

Episode 1 - A Pact Concealed Within a Maze

Episode 2 - Philosopher's Reward

Episode 3 - The Boy Genius’ Melancholy

Episode 4 - The Girl in the Secret Room

Episode 5 - Invitation from a Nightmare

Episode 6 - Restoration Towards the Light

Episode 7 - Nonoha's Title

Episode 8 - Crab! Hot Springs! The Puzzle King!

Episode 9 - The Fallen Apple & the Path's Continuation

Episode 10 - Welcome to the Queen's Country

Episode 11 - The Queen Strikes Back

Episode 12 - Puzzle Time at Reunion

Episode 13 - The Tower of Parting

Episode 14 - The Right of Friendship

Episode 15 - Blue Sun, Red Moon

Episode 16 - Labyrinth of Condemnation

Episode 17 - The Truth

Episode 18 - Rebellion Against the Light

Episode 19 - The Proof of Betrayal

Episode 20 - The Speeding Challenger

Episode 21 - Glistening Tears

Episode 22 - That Which Inherits Principles

Episode 23 - The Choice Left Remaining

Episode 24 - The Eternal Being

Episode 25 - Let's Begin Puzzle Time

Sunrise

NHK Enterprises

Sentai Filmworks

Phi Brain ~ Puzzle of God: The Opheus Order