Think it through.

01Arts & Culture · Easy

The Compass Crate Mix-Up

Three crate labels identify three exhibits, leaving one careful final deduction for the missing compass.

Open case → 02Places & Travel · Easy

The Journal on Platform Four

Four departures form a tight sequence, and the journal owner occupies the only open place in it.

Open case → 03Arts & Culture · Medium

The Key by the Library Window

A fixed row of reading desks turns three location clues into one unambiguous hiding place.

Open case → 04Science & Nature · Medium

The Greenhouse Power Drop

Crop assignments, sensor parity, and one confirmed online pod isolate the greenhouse power fault.

Open case → 05Everyday Logic · Easy

The Bakery Label Swap

Three known fillings and a no-repeat rule reveal which pastry carries the swapped label.

Open case → 06Places & Travel · Medium

The Lighthouse Arrival Log

A damaged harbor log can be rebuilt from relative arrival times and one fixed final boat.

Open case → 07Science & Nature · Hard

The Aquarium Access Badge

Morning research assignments and one ray-zone restriction identify who left the temporary aquarium badge.

Open case → 08Science & Nature · Medium

The Observatory Lens Case

Case contents and two explicitly identified latch finishes isolate the observatory’s polished lens.

Open case → 09Arts & Culture · Medium

The Missing Festival Reel

Three couriers are matched to three film titles, leaving one restored reel without an assigned name.

Open case → 10Science & Nature · Medium

The Conservatory Seed Envelope

Four numbered shelves and one immediate-above clue locate the conservatory’s moonflower envelope.

Open case → 11Science & Nature · Medium

The Weather Station Sensor

Three channel assignments reveal which rooftop sensor reported rain during a calm, dry hour.

Open case → 12Places & Travel · Medium

The Suitcase on the Island Ferry

Three passengers have identified bag types, leaving one traveler for the ferry’s striped suitcase.

Open case → 13Everyday Logic · Medium

The Clockmaker’s Brass Gear

A spring, two screws, and a wooden pin occupy three trays, leaving one place for the brass gear.

Open case → 14Arts & Culture · Medium

The Blue Paint Footprints

The cleanup log contains statements that can all be true for only one student’s paint station.

Open case → 15Science & Nature · Medium

The Robotics Lab Cable

Three robot positions determine Atlas’s bay and the location of its high-capacity charging cable.

Open case → 16Arts & Culture · Medium

The Archaeology Tent Photo Card

Folder contents and the timing of photography identify where the excavation memory card was filed.

Open case → 17Arts & Culture · Hard

The Music Hall Score

Stand positions and rehearsal movements locate the score left behind after the ensemble packed up.

Open case → 18Games & Community · Medium

The Chess Club’s Lucky Rook

Two player assignments and one board checked during setup reveal where the lucky rook is hidden.

Open case → 19Places & Travel · Easy

The Flashlight in Pine Cabin

A packing checklist accounts for three supply bins and leaves one exact place for the flashlight.

Open case → 20Arts & Culture · Medium

The Note in the First Edition

Bookmark colors and one book’s sale time narrow a hidden thank-you note to a single display title.

Open case → 21Everyday Logic · Medium

The Flower Market Order

The market’s opening order and an immediate-before clue locate the stall selling lilies.

Open case → 22Science & Nature · Medium

The Community Garden Watering Can

Three returned tools are logged at three sheds, leaving one shed for the copper watering can.

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