In our classic Sudoku puzzles, the grid is 9 squares wide and 9 squares deep. The lines of squares running horizontally are called rows, and the lines running vertically are called columns. The grid is further divided by the thicker lines into nine 3 X 3 square boxes.
To help you on your way, some of the boxes have already been filled in. The aim of the puzzle is to fill the blank squares with the correct numbers. Each row, column and box must end up containing all of the numbers from 1 to 9. Each number can only appear once in a row, column or box.
If we take a look at the bottom middle box, the number “2” can only go into “G5” as the row “H” already has a number “2” in it.
The number “1” in row “I” can only go into “I7”. This is because there is already a number “1” in the bottom left box and a number one in “A8”.
Scan each row, column and 3 x 3 box, filling in the answers as you find them.