Introduction to Sudoku - 9X9 - Level 4 (10+ years)

This is the 4th level in the series of 9X9 sudoku puzzles. These puzzles are all different, but the rules are the same. They are 9X9 grids, with the numbers 1 to 9 on every row and every column. With more than 100 puzzles, your child will have hours of non-stop fun.

The objective of the game is to fill in the numbers so that each row, column, and 3x3 box (box being a 3x3 square) contains only one of each number.