I don't usually write reviews for much of anything. However, at the moment I feel as if rambling is the best and only way to iterate the immense disappointment that I feel after watching Phi Brain: Kami no Puzzle.
I should start by stating that I loved the premise of this anime, and I was also impressed by the fact that it dared to be artistically different. Having said those things, I was really excited about Kami no Puzzle, and, although the pilot episode made it clear to me that it was a Shounen anime, I actually liked what I saw in the beginning.
I suppose that my fancy little clincher and hastily written summation of the anime's pros lead up to this statement: Somewhere along the line, the ball was dropped, and it hit the ground with a thunderous smack. Suddenly, the relaxing pace became a race to tie up the story. The rush, in my opinion, only made it more obvious that some earlier episodes could have been swapped out with episodes that better contributed to plot progression. To add fuel to my fire, the story's primary and secondary conflicts were poorly addressed, if they were ever really addressed at all.
I suppose that if you really like Shounen, then Kami no Puzzle's formula won't bother you as much as it did me. Besides, even with all of the humbug obstructing my view, I could see that it had potential and possibly still has that potential. It's all just a matter of execution.