Another of Creative Crafthouse's unique designs and this one has 2 puzzles in 1. The object of both puzzles is to turn the 6 hardwood wheels such that all columns add to 100 at the same time. There is a SUPER difficult side with 12 columns of numbers. There are over 248,000 possible permutations with 1 possible solution. A hard level 5 puzzle. The flip side has 6 columns of numbers. It is still quite challenging (level 4) with over 7700 permutations with only 1 possible solution. The numbers are all deeply laser engraved into the puzzle. Woods used are rubberwood, maple, or ash (all light colored wood that lasers well).