It’s Sudoku by Ponoko!!
Anyways…. ;-) This idea combines wood puzzles and the traditional numbers game in a whole new way. The rules are the same as the original. This one started out as “Extreme Difficulty” but becomes a little easier in the melding of the two forms. Don’t be fooled though, it’ll still give the grey matter a workout.
Minor assembly required to glue the main back piece to the rest of the board. Current design has the same puzzle repeated 4 times.
Custom puzzles are available.