He’d killed himself so many times that all his jokes about suicide rang hollow in his heart.
But he soldiered on, moving along the probability axis, from one alternate universe to another, killing any of his alternate selves that he found had not lived as worthy a life as his.
No one knew where the puzzle came from, but now you couldn’t go out in public without seeing at least one person trying to solve it.
The first person who solved it committed suicide.
“Their brains are not evolved enough to encompass the 21-dimensional manifold of hyperspace,” concluded the aliens.