Author(s): Telegraph Media Group

Puzzles

Griddlers are the ultimate tests of deduction for puzzle enthusiasts - one mistake and the whole picture could fall apart! Using the numbers alongside each grid, you must figure out which squares need to be filled in, which when completed reveal a final image. Challenging and addictive, and a great excuse for frantically scribbling and shading away, you'll never be more glad to be going square-eyed.