Test your brain power with Sudoku puzzles from PermissionResearch! This addictive game of logic has millions of fans around the world. Now as a member of PermissionResearch, you can play a new online puzzle everyday. Whether you’re a Sudoku novice or master, we’ll have a puzzle for you. Our Sudoku puzzles range from easy-to-solve to head-scratching hard.

If you’re new to Sudoku, it’s easy to get started – no math skills are required. The rules for solving a Sudoku puzzle are simple: Each row, column and 3x3 box must contain the numbers 1 through 9 exactly once. And there’s only one solution. Warning: Sudoku is addictive so you may get hooked!

Feed your Sudoku addiction here! Another free benefit for all PermissionResearch members.