Medium — logic-grid deduction puzzle
Four inspectors each checked one tram at a Lisbon depot, and the foreman's scattered ledger needs putting back together.
It was early morning at the tram depot in Lisbon, and four inspectors, Amadeu, Rosalia, Vasco and Isaura, each had one tram to check before it rolled out. Every tram ran a different line and wore its own paint. The foreman wrote it all down in his ledger, but a gust of wind through the open doors sent the loose pages flying across the yard. Now he needs your help to put the morning back in order.
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