They baffle, delight, and frustrate millions of people around the world on a daily basis. But even the most dedicated Sudoku-solver might have never spotted this secret pattern. Mathematicians have ...

Sudoku is an extremely elegant puzzle, and this crucial to its appeal. The rules are simple to understand and the grid – with given numbers usually presented in a symmetric pattern – is striking. Yet ...

Sudoku players that have been left frustrated by the latest puzzle they're trying out should turn to the handy X-wing technique. Named after the iconic Star Wars spaceship, the X-wing technique can ...

Sudoku players that have been left scratching their heads at the latest puzzle they're trying need to know a handy and helpful trick. Sudoku experts have revealed a number of secrets about the ...

Sudoku games have evolved a lot since they first appeared in newspapers. Now, puzzle apps use artificial intelligence to ...

The appeal of sudoku has spread to the prokaryotic world. A strain of Escherichia coli bacteria can now solve the logic puzzles – with some help from a group of students at the University of Tokyo, ...

Earlier today I set you three ‘clueless’ Sudoku and an ‘almost clueless’ Killer Sudoku. For discussion and tips you can read the original column here. For a printable page of all the puzzles click ...