Regular Jigsaw Puzzle
Regular Jigsaw Puzzle is an old twentieth century tabletop board game created by John Spilsbury. the goal is to recreate the an innocuous photograph of a singular color using 4369 jigsaw pieces.
Regular Jigsaw Piece has a connection to this. He's probably Spilsbury's grandson, or something.
[Muscle Man has been erased.]
Trivia
It's arguably harder than The Toy Where You Solve Complex Mathematical Problems.