Sudoku puzzle 61 - Extreme Sudoku 15x15

Posted on November 22, 2015

Today you get another great workout for your brain by trying to solve this Sudoku puzzle. A Sudoku puzzle a day keeps the doctor away :)

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