SUDOKU
Difficulty: hard
You are given a 9x9 grid which has been divided up into nine 3x3 boxes. The aim of the game is very simple: to fill each row, column and 3x3 box with the numbers from 1 to 9 inclusive.
You are given a 9x9 grid which has been divided up into nine 3x3 boxes. The aim of the game is very simple: to fill each row, column and 3x3 box with the numbers from 1 to 9 inclusive.