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Sudoku is a special puzzle game that has gained a lot of attention in recent years. Nowadays, you can hardly find a newspaper that does not have Sudoku in it. It’s usually played on a 9x9 grid with 3x3 regions by placing the numbers 1-9 into the regions in a logical manner until the grid is completed. There are also Sudoku puzzles made up of a 4x4 grid with 2x2 regions and a 6x6 grid with 2x3 regions. Since it burst into international popularity in 2005, there have been many variants of Sudoku like Kakuro, Killer Sudoku, Windoku, Gattai 5 Sudoku, and others. Here are some Sudoku resources.

How to Play Sudoku

Tips and Tricks

Beginner Sudoku Puzzles

Intermediate Sudoku Puzzles

Advanced Sudoku Puzzles

Expert Sudoku Puzzles