The Detective’s DeskAria Vale
Recorded packet handler
“Establish my packet, location and event from the verified custody record.”
HARD · CASE FILE
The cheaper safe route
Hard · WILLOW NIGHT DISPATCH
A dispatch must reach the vault within eleven minutes. The cheapest route by toll is preferred among routes that meet every safety and time constraint. The archive retained the competing reconstructions in separate packets. Rebuild their custody events, identify the proposal supported by the analytical records, then name that packet’s recorded handler. The packet events form a separate ordered register; do not substitute a calculated clock time for a review-slot label.
Read the case file below, or open the interactive desk to examine records, keep notes and submit your reasoning. These are the case materials, without the solution.
Your assignment
Who handled the packet containing the supported reconstruction?
- The analytical records answer the analytical question; worksheet records establish the packet custody reconstruction. Candidate proposals and supplementary recollections are claims to test.
- There are 5 ordered events. Use each listed person, location and item once in its column. “A immediately before B” means A is in the row directly above B, with no row between them.
- 6 verified records support the complete submission. Keep the separate context note out of the proof.
- No outside facts or unstated exceptions are required. The complete board and report are assessed together.
People and accounts
Inez Shore
Recorded packet handler
“Establish my packet, location and event from the verified custody record.”
Cora Reed
Recorded packet handler
“Establish my packet, location and event from the verified custody record.”
Dev Holt
Recorded packet handler
“Establish my packet, location and event from the verified custody record.”
Beni Moss
Recorded packet handler
“Establish my packet, location and event from the verified custody record.”
Case records
Read each record on its own terms. A claim made by a person is different from a fact established by an independent record.
VERIFIED RECORD C
Closure notice
Route S is closed all night. P, Q and R are open. The objective is minimum toll among open routes meeting the deadline, not minimum time.
Exclude S before optimising the remaining feasible routes.
CONTEXT NOTE
Dispatch weight
The envelope weighs 40 grams; all route times already apply to it.
This describes the setting; it does not establish the requested result.
VERIFIED RECORD A
Route choices
Route P takes 8 min and costs 7 credits. Q takes 10 min and costs 4. R takes 12 min and costs 1. S takes 9 min and costs 3. These are complete route totals.
Retain route time and toll together.
VERIFIED RECORD B
Deadline
The dispatch leaves at 21:00 and must arrive no later than 21:11. Arrival exactly at the deadline is permitted.
Discard any complete route longer than eleven minutes.
RECONSTRUCTION RECORD
Packet proposal index
This is the same investigation’s packet custody record. There are 5 ordered events, labelled Review 1, Review 2, Review 3, Review 4, Review 5. Each listed person, location and item occurs exactly once. These slots describe record order, not times from the analytical problem. Each packet contains the proposed reconstruction shown in the index. Solve the original three analytical records to identify the supported proposal, then trace its packet to its handler. Control packets have no proposal and cannot be the target.
- The event handled by Dev Holt occupies slot 4 (Review 4).
- The event at Seal station occurs earlier than the event handled by Beni Moss, without claiming they are consecutive.
- The event involving “Packet Elm” occurs earlier than the event handled by Dev Holt, without claiming they are consecutive.
- The event at Reading desk and the event involving “Packet Birch” are exactly 2 positions apart, with 1 intervening event; this alone gives no direction.
| Packet | Proposed analytical answer |
|---|---|
| Packet Amber | Route Q |
| Packet Birch | Route S |
| Packet Cedar | Route R |
| Packet Dune | Route P |
| Packet Elm | Control packet: no analytical proposal |
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
RECONSTRUCTION RECORD
Custody sequence
The relationships below were verified independently. “A immediately before B” means A is in the row directly above B, with no row between them. Keep relationships from all worksheet sources together.
- The event at Review bench occupies slot 5 (Review 5).
- The event at Dispatch shelf is the same event as the event involving “Packet Amber”.
- The event handled by Cora Reed and the event involving “Packet Amber” are exactly 3 positions apart, with 2 intervening events; this alone gives no direction.
- The event at Reading desk occurs immediately before the event at Intake counter (consecutive rows, with no event between them).
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
RECONSTRUCTION RECORD
Cross-check and accounts
The relationships below were verified independently. “A immediately before B” means A is in the row directly above B, with no row between them. Keep relationships from all worksheet sources together.
- The event at Intake counter and the event at Review bench are exactly 3 positions apart, with 2 intervening events; this alone gives no direction.
- The event involving “Packet Amber” and the event involving “Packet Cedar” are exactly 2 positions apart, with 1 intervening event; this alone gives no direction.
- The event handled by Aria Vale and the event involving “Packet Elm” are exactly 2 positions apart, with 1 intervening event; this alone gives no direction.
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
Questions to resolve
Which complete route is the cheapest permitted choice?
Reconstruct the file or item order through the verified register.
Which packet contains the supported analytical answer?
Use the interactive case desk to select your finding and cite the records that support it. The answer is checked there, and your progress stays in your browser.
Build your finding
Compare the records with each account. Work out what the evidence establishes, then separate that finding from anything it does not prove.