Sudoku puzzle 137 - Extreme Sudoku 16x16

Posted on May 7, 2017

I always find it gratifying when I finally solve a Sudoku puzzle. I felt thrilled when I solved this Sudoku puzzle.

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.