Sunday Telegraph Third Book of Griddlers

Appearing weekly in the Sunday Telegraph, Griddlers are tests of skill and logic - finding patterns and pictures in a grid - that can easily become addictive. This third collection of Griddlers contains over 80 puzzles, many of them previously unpublished. As always, if frustration finally sets in, the solutions are included at the back.

James Dalgety is one of the world's leading Metagrobologists. For fifteen years he ran his own puzzle manufacturing company. He helped set up Bristol Exploratory as Britain's first hands-on Science Centre. He has also established PuzzleQuest, a permanent exhibition of large interactive puzzles at Techniquest in Cardiff, and he designs puzzles for toy companies, advertising promotions and interactive exhibitions. He lives in Honiton, Devon.