The Pneumatic Post Line — Daily puzzle for 2026-07-18

Hard — logic-grid deduction puzzle

Avery, Blake, Colin, and Hazel must reconcile a contradictory inspection log before the depot reopens.

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.

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