Kyle's bloodshot eyes were torn open in absolute focus.
His mind felt like it was burning as he looked at the current puzzle.
He had been looking at this particular puzzle for weeks already.
Whenever he got close to the end, he forgot some of the earlier numbers.
When he tried to recreate those numbers, he forgot the other ones.
At some point, Kyle didn't even see the puzzle anymore.
He just saw different concepts and relations between numbers, and he was trying to create a diagram in his mind that would fulfill all the requirements.
As his mind started burning more, the pain from unlocking the eleventh Cluster also became more pronounced.
Since Kyle needed to use more and more of his focus, he didn't have as much focus left to ignore the pain.
Numbers.
So many numbers.
Eventually, he even stopped looking at the puzzle and just closed his eyes.
The configuration of the unsolved puzzle was already burned into his mind.
