Hyper Sudoku puzzle 21 - Extreme Hyper Sudoku 9x9

Posted on January 29, 2015

Solving a Hyper Sudoku puzzle is really fun for the brain. Try it and enjoy!

How to play Hyper Sudoku: The goal of Hyper Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. Furthermore, Hyper Sudoku contains four colored regions, each colored region contains each number exactly once.