Play unlimited sudoku puzzles online. Four levels from Easy to Evil. Compatible with all browsers, tablets and phones including iPhone, iPad and Android.

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This guide will teach you how to play Sudoku at 247 Sudoku - we’ll cover the basics as well as some killer strategies to help you win more consistently (and a lot faster!).

Play Sudoku online for free with Easy, Medium, Hard and Very Hard levels. Track your time, use hints and notes, print puzzles with answers, and try our Daily Sudoku.

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Solve sudoku puzzles online, 100% free. Play unlimited games and choose difficulty levels. To play, place numbers 1 through 9 in boxes, columns, and rows.

Play Sudoku for free. No downloads, no signup. Unlimited games, full screen, responsive graphics, three difficulty levels, notes, and timer.

You can print Sudoku puzzles, share them, get help while trying to solve a puzzle, and get detailed statistics for the Sudoku puzzles you have solved. If you wish, you can even compete …

Play hard level Sudoku online on Sudoku.com. Our daily difficult web sudoku puzzles are suitable for people, who possess an excellent knowledge of sudoku game and know how to build a …

Play Microsoft Sudoku for free on MSN and enjoy the classic puzzle game.