Maki Kaji, a creator of the popular numbers puzzle Sudoku whose life's work was spreading the joy of puzzles, has died, his Japanese company said Tuesday. He was 69 and had bile duct cancer. Known as ...

A growing interest in calm, routine mental engagement is reshaping how older adults spend quiet moments each day. Many ...

TOKYO — Maki Kaji, the creator of the popular numbers puzzle Sudoku whose life's work was spreading the joy of puzzles, has died, his Japanese company said Tuesday. He was 69 and had bile duct cancer.

Try your hand at these tricky visual puzzles and give your brain a boost!

For anyone who has ever struggled while attempting to solve a Sudoku puzzle, mathematicians are coming to the rescue. They can not only explain why some Sudoku puzzles are harder than others, they ...

Dr. Sudoku has a decent set of features and a lot of prebuilt puzzles, but a D pad and buttons isn't the ideal way to play. Sudoku is sudoku, regardless of where you play it. The popular ...

Sudoku is a word that's quickly becoming this century's "Scrabble," but without all the messy legality wranglings of a trademarkable word. Every newspaper in the world prints up one or two Sukoku ...