Sudoku
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It's easy to learn Sudoku. Digits from 1 to 9 are placed in each empty cell. Every row, column, and 3 x 3 box should contain one of each digit.
Click on each cell with your mouse and enter a number from 1 to 9 using your keyboard. If you're just starting out, selecting "pencilmarks" and/or "validity"
might make things easier, and if you get stuck you can ask for a hint, or even a full solution.
Math.com Sudoku posts five new puzzles every day. Each puzzle has a unique solution and can be solved with pure logic. Guessing is not required.
To learn more about Sudoku, see here. Bookmark this page to play a new game of Sudoku every day!
Shop for Sudoku merchandise at our store.
The Sudoku Archive contains hundreds of puzzles, each graded from Easy to Fiendish.
