Play a free Sudoku puzzle game every day online to give your brain a daily workout. One new Sudoku puzzles is provided online every day for each of 5 different skill levels. They are all free. Have you played a Sudoku game today?
Each online daily Sudoku puzzle has a printable version. Simply print it out and bring it with you. Then you can play Sudoku daily anywhere even when you are not online. The printable Sudoku puzzles are absolutely free.
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Pencil marking mode will be activated when this option is checked AND at least 2 digits are entered in a square. You may use background highlight option when making a guess. These two options are very useful when solving difficult puzzles with advanced techniques.
Use mouse to select (click on) a digit on the right side bar first and then click on the square where you want to place the digit in the grid. To switch to keyboard (the default mode), simply press the keyboard button. When finished, press 'Done'.