Very Hard — logic-grid deduction puzzle
At closing time in 1911, four attendants each cleaned one room of the Harrogate Turkish baths and picked up something a bather had left behind, but one line in the lost-property book was false.
Harrogate, 1911. It was closing time on a busy Saturday at the town's Turkish baths. Four rooms ran in a row from the entrance, each one hotter than the one before, from the first room to the fourth. Albert, Walter, Harold and Percy went round one last time. Each of them cleaned a different room with a different tool, and each picked up one thing a bather had left behind. The manager's clerk wrote down what they reported in the lost-property book. But it had been a long day, and three of the lines the clerk wrote are in doubt. One of those three is false. Sort out what really happened, and every lost thing can go back to its owner.
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