Did you know? The name Sudoku comes from Japan and consists of the Japanese characters Su (meaning ‘number’) and Doku (meaning ‘single’) however, the famous puzzle apparently was not invented in Japan. Sudoku’s origins began in Switzerland, travelling to Japan by way of America.
How to play Sudoku
To solve Sudoku, every number from 1 to 9 must appear in:
• Each of the nine vertical columns
• Each of the nine horizontal rows
• Each of the nine 3 x 3 boxes
Click/Tap the pencil icon to toggle between the practice-number panel and the correct-numbers panel.
Click/Tap a square to highlight it then use the number panel to add/remove a number in that square. Alternatively, you can use your device keyboard.
In landscape view, the correct numbers panel is on the left and the practice number panel is on the right.
When you have correctly completed a line, column or a 3 x 3 box it will be highlighted and any practice numbers will disappear.
Looking for more brain teasers?
Try our Code Cracker here
Try our Crossword here
Try our Word Search here