File status: open

Confidential candidate assessment

You have reached a restricted assessment file.

The Proof Ledger Unit is reviewing candidates through reconstructed investigation cases.

Not a novel. A case file.

A free logic investigation test from The Proof Ledger series.

Candidate file
Assessment unit Ref. PL–A01

Preliminary review

Pattern Recognition
ClearanceCandidate
Duration10 minutes
MaterialsOne page
Confidential

01 / The method

The evidence is ordinary.
The pattern is not.

The Proof Ledger is a series of logic-based investigation books. Each case contains a set of clues and a large administrative record: a hotel register, a cruise manifest, a museum inventory, an auction register...

Your task is to search the records, eliminate false leads, and find the hidden pattern.

01Observe

Read every clue. Assume every detail may matter.

02Cross-reference

Search the records and test each possible link.

03Eliminate

Discard false leads until the pattern remains.

02 / Entry protocol

Preliminary
Assessment

Before entering the full Argos Hotel case, you may complete a short preliminary assessment.

  • 01 One page.
  • 05 Five clues.
  • ? One hidden pattern.
Candidate clearance

If you can solve it, you are ready to search the full hotel register.

Start the Assessment No prior knowledge required.
Case 001
Cover of The Proof Ledger: The Hotel Register
Evidence volume / 01

03 / Full investigation

Case 001 now available

The Proof Ledger: The Hotel Register

Four hotel rooms.

Four stolen objects.

No reliable dates.

Somewhere in a year of reservations, the same thief appears four times under four false identities.

Follow the clues. Search the ledger. Find the pattern.

View the Case on Amazon

04 / Communications

Contact

Candidate responses and case inquiries may be sent to:

contact@theproofledger.com