This puzzle is a variation of peg solitaire. I don’t know the origin of this puzzle but this problem included in a lot of math puzzle book. The aim of the puzzle is exchanging two color marbles. A marble can move forward to an empty space or can jump over one peg if the back side of this peg is empty. Moving backward is forbidden. It’s more difficult than it looks. This puzzle hasn’t a replay value as the majority of mechanical puzzles. I made this one in a India made pencil box. For board I cut a thin (3mm) pine. I drilled 8 mm holes and used 13 mm small marbles. You can make easily your own puzzle in a few hour and up cycle your empty pencil boxes. you can find the solution from Jim Storer web site.