Each Sudoku has a unique solution that can be reached logically without guessing. You should enter digits from 1 to 9 into the blank spaces so that every row, every column and every 3 x 3 square contains the numbers 1 to 9 inclusive.
How To Play
We give you a set of starting numbers which appear in black type and cannot be altered. Click in any blank cell and input your own numbers - these will be shown in orange. If you have enabled "Pencil Markings" (click the "Options" button for details) you can input more than one number in each cell until you make up your mind which is the correct one but when you finish you must have only one number in each cell. You can delete any orange number by highlighting it (with the mouse) and pressing the Delete key on your computer keyboard.
"How am I Doing" Button
Click this and a message will appear just below the grid that informs you of any errors.
"Start Again" Button
Click this and all of the numbers that you have input will be removed so that you can start the quiz again.
Click this and you will be taken to a screen that allows you to print the page.
Click this and you will be taken to a page where you can set your preferences for playing Sudoku. Full instructions are given at the page.
"Show a Solution" Button
Click this and the solution to the Sudoku will be revealed. Please note that you cannot reveal a solution to today's quiz BUT you will be able to see it tomorrow!