Panex Galaxy

Panex Galaxy is an extended version of the classic Panex puzzle, invented by Toshio Akanuma and manufactured by Tricks Company in Japan in the 1980's. Whereas the original Panex puzzle has two columns of pieces that need to be switched and an empty one, Panex Galaxy has three columns of pieces and an empty one. The challenge of the puzzle is to swap the silver and gold columns. If you can solve the classic Panex puzzle, you can solve this puzzle as well. However, the solution for the classic Panex is highly inefficient for this one, so you may want to find a more efficient solution. The staircase design assures that each color can only be moved down to its specific depth.