Today’s case

Daily Evidence Chain Logic Puzzle

Six events. One true sequence. No guessing required.

Goal Arrange all six events from first to last.

Archive workspace

Evidence chain

0 / 6 confirmed
00:00

Crawlable case record

Evidence from The Book That Returned Itself

A forbidden volume reappeared in a locked archive. Restore six access records to discover how it crossed the room.

Logged events

  • Librarian scans inThe archive door accepts one card.
  • Book lift descendsThe service lift reaches the stacks.
  • Return cart movesA floor tag passes the east reader.
  • Archive clock resetsThe wall clock corrects itself.
  • Shelf sensor changesA gap closes on row seven.
  • Reading room opensThe public lock releases.

Exact clues

  1. The librarian's scan was first.
  2. The return cart moved immediately after the book lift descended.
  3. The clock reset three positions after the librarian scanned in.
  4. The cart moved before the shelf sensor changed.
  5. The reading room opened immediately after the shelf sensor changed.
Read the closed-case resolution

The book arrived on the automated return cart before the archive clock corrected itself. No one crossed the locked room; the service lift did.

The rule in ten seconds

How to play

Read. Each clue gives an exact relationship.

Reorder. Select two events to swap them.

Check. Confirmed positions stay marked.

Prefer a classic logic grid? Play Case Grid. Prefer numbers? Play Kakuro.