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

Staff roles, entry times, and a restricted doorway identify who could have dropped the aquarium badge.

Open case → 08Science & Nature · Medium

The Observatory Lens Case

Only one telescope station can make the technicians’ statements agree with the lens inventory.

Open case → 09Arts & Culture · Medium

The Missing Festival Reel

Delivery notes place four volunteers in sequence and reveal who carried the restored film reel.

Open case → 10Science & Nature · Medium

The Conservatory Seed Envelope

Room numbers and adjacency constraints narrow a misplaced seed envelope to one conservatory bench.

Open case → 11Science & Nature · Medium

The Weather Station Sensor

Wind direction, maintenance status, and one impossible reading expose the faulty weather sensor.

Open case → 12Places & Travel · Medium

The Suitcase on the Island Ferry

Ticket colors and destination records match one traveler to the suitcase left on the island ferry.

Open case → 13Everyday Logic · Medium

The Clockmaker’s Brass Gear

Three completed mechanisms account for three gear sets, leaving one clock with the missing 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

Power readings and charging dependencies point to the robotics bay that lost its cable.

Open case → 16Arts & Culture · Medium

The Archaeology Tent Photo Card

Catalog order and drawer contents identify where an unlabeled excavation photo card belongs.

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

Board numbers and piece-color conditions reveal which club table is missing a rook.

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

Shelf sections and catalog categories determine which book contains the first-edition note.

Open case → 21Everyday Logic · Medium

The Flower Market Order

A florist’s pickup sequence and neighboring stalls identify where the special order was collected.

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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