Easy — logic-grid deduction puzzle
Spilled coffee has smudged the repair café's sign-in sheet, so four visitors' check-in times, tags and items need sorting out again.
Every Saturday the repair café opens its doors, and people bring in the things they want fixed. This morning four visitors came in one at a time, and each one carried something different. A volunteer wrote down when each person checked in and gave each of them a tag of a different color. A chart on the table showed the tag colors from coolest to warmest: violet, blue, green, amber. Then somebody knocked over a cup of coffee, and it ran all over the sign-in sheet. The visitors are already waiting for their repairs. Can you use the notes that are left to work out who came when, which tag they got and what they brought?
Read the clues, rule out what cannot be, and prove what must be. Every GRIDIGMA puzzle is verified by a solver that shows the reasoning behind each step, so a solution is never a guess.
Logic grid puzzles: how to solve them, with a worked example