Free Daily 12×12 Giant Sudoku
Daily 12×12 Giant Sudoku for Thursday 21st August 2014
All-time 12×12 Sudoku leaderboard
Monthly 12×12 Sudoku leaderboard
Register for free
Here are some great benefits to registering for free at Puzzle Madness!
- Save your progress on any puzzle at any time.
- We will keep track which puzzles you have done, so that you don't end up doing the same puzzle twice.
- It's free!
How to play
- This page will automatically play our 12×12 Giant Sudoku puzzle of the day. If you wish to play a 12×12 Giant Sudoku from a different day, go to the archive page.
- To enter a number/letter, click on a cell and type in the number/letter you want. Since our Giant Sudoku grids have more than 9 numbers, we also use A-C (12*12 grids), and A-F (16*16 grids).
- To enter pencil marks, press Shift, Ctrl, or Alt as you enter the number/letter; Shift is usually the best to use as the other keys can do other things on your browser. To remove the pencil mark, repeat the process again!
- Use the buttons on the right side to reset the grid, automatically generate and clear the pencil marks.