Just when you thought it was safe to pick up a pencil Killer Su Doku is based on the original Su Doku grid, with the same rules and numbers—1 to 9—but with

Indexes the Times, Sunday times and magazine, Times literary supplement, Times educational supplement, Times educational supplement Scotland, and the Times high

The Rough Guide Book of Brain Training contains 100 days' worth of puzzles designed to give your brain a thorough work-out. Just 5 puzzles a day will lead to a

The latest volume in the hugely popular Killer Su Doku series from the puzzle suppliers to The Times, featuring the highest-quality puzzles with an extra elemen

Game & Puzzle Design is a peer-reviewed research journal publishing high quality work on all aspects of game and puzzle design. The journal is published twice a