sudoku

The 36 officers problem

Euler may not have cracked this problem completely, but it led to a lot of important work, including on what we today know as sudoku.

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The chaos of sudoku

Struggling to solve today's sudoku? Is your tried and tested method hitting a brick wall and you feel like you are going around in circles? New research might make you feel a bit better: you might not necessarily be stuck... perhaps you are just in a patch of transient chaos on your way to the solution.

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Solving sudokus - colouring by numbers
Graph theory helps answer Sudoku questions
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Forget Sudoku and smile for the camera
An algorithm for solving Sudoku puzzles from an unexpected source
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Anything but square: from magic squares to Sudoku
Get on a commuter train these days and you can virtually see people's brains crunching away at filling the numbers from 1 to 9 into a square grid. As the Sudoku craze shows no sign of slowing, Hardeep Aiden investigates its relatives and predecessors.
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