Sudoku puzzles

Learn all about Sudoku puzzles with our in-depth information about Sudoku, its fascinating origins, solution strategies (up to advanced level) and theory.

Let our animated guides take you step-by-step through the many and varied strategies for solving Sudokus.

Every day we publish unique, free puzzles on this site (Standard, Word, Samurai and Jigsaw types) that can also be picked up automatically with your news reader.

A unique variation of the basic puzzle is provided here, each Sudoku can include the Sudoku Stripe - which adds a new twist to solving Sudokus.

Today's Dragon Tip

Possibility coding
Our unique display grid not only shows you what allocations are possible for each square but also uses color coding to let you see immediately why an allocation is or is not possible.
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Sudoku puzzle solver

Our message board forums is full of help and you can join for free and help out other puzzle solvers.

Today’s Quotation

“Man has such a predilection for systems and abstract deductions that he is ready to distort the truth intentionally, he is ready to deny the evidence of his senses only to justify his logic.”

Dostoevsky (Notes from Underground) 1864 Constance Garnett

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