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Ages 8–10 · Est. 35–50 minutes · 2–6 players

Clockmaker Birthday Repair

The clock repair cards must be returned to an order that allows every check to happen. Work together to reconstruct the clock repair schedule.

6 clues, gradual hints and a complete paper finish. Choose a reader, a recorder and a checker, then work through the mission together.

See every player clue ↓

Clockmaker Birthday Repair: Arrange the four event cards using every witness note. "Immediately before" means there is no event between them. Report the requested position after the whole order has been checked.

Your mission

Work together to reconstruct the clock repair schedule.

Welcome to the clockmaker workshop. The clock repair cards must be returned to an order that allows every check to happen. Your team has the original records on the table. First recover five pieces of information, then use the final plan to reconstruct the clock repair schedule. Keep every result beside its badge so another teammate can check your reasoning.

How your team will think

Combine before/after reports and work-and-travel windows.

Keep event names, times and badge labels together. Test the printed before, after and availability rules before accepting a schedule.

Set up in one room

  1. Print the six player sheets and two record sheets for each team. Keep answers and hints with the host.
  2. Lay out Event cards, Departure windows (minutes after opening), the remaining clue sheets and the final plan. All task records are printed inside the sheets; no extra prop is needed.
  3. After each clue, pass roles one seat clockwise. With two players, combine Reader with Recorder and Checker with Builder. With five or six, add a second checker and a source finder; everyone explains one decision.

Bring to the table

  • One complete player set and record set per team
  • One pencil per child
  • One adult host with the answer and hint pages

Print and sorting checklist · Plan the player roles

Ages and durations are design estimates. Choose the pace and reading support that suit your group.

Look before you print

See all 6 player clues

These are the actual figures and instructions from the player pack. Read the final page’s rule along with the earlier clues.

Clue 1 of 6

Order

Arrange the four event cards using every witness note. "Immediately before" means there is no event between them. Report the requested position after the whole order has been checked.

Clockmaker Birthday Repair: Arrange the four event cards using every witness note. "Immediately before" means there is no event between them. Report the requested position after the whole order has been checked.
Read this clue in text

Event cards A: Open case B: Fit spring C: Stop clock D: Clean wheel Witness notes D is immediately before B. A is before D. C is immediately before A. Report the event ID in position 3.

Clue 2 of 6

Window

The team needs time for both the job and the journey. It cannot start before the earliest time, leave a window unfinished, or arrive after the deadline. Which departure window works? Times are minutes after opening.

Clockmaker Birthday Repair: The team needs time for both the job and the journey. It cannot start before the earliest time, leave a window unfinished, or arrive after the deadline. Which departure window works? Times are minutes after opening.
Read this clue in text

Departure windows (minutes after opening) EARLY: start 15; window ends 30 MID: start 25; window ends 40 LATE: start 35; window ends 55 Work and travel Earliest start 20; job 7 min. Travel 5 min; arrival deadline 40. Job + travel must both fit inside one window. Report the only possible window ID.

Clue 3 of 6

Parts

Parts desk: A return entry lost its amount. Use the opening and closing stock to find the missing return. Apply DONE entries; ignore the CANCELLED plan.

Clockmaker Birthday Repair: Parts desk: A return entry lost its amount. Use the opening and closing stock to find the missing return. Apply DONE entries; ignore the CANCELLED plan.
Read this clue in text

Opening stock: 10. Closing stock: 16. Received: +3 DONE Planned: +7 CANCELLED Issued: -3 DONE Returned: ? DONE Missing return = ? units. Ignore cancelled plans.

Clue 4 of 6

Repairer

Repairer desk: Each person has ONE different item. Use all four NOT rules. Find Kit's item and copy its digit.

Clockmaker Birthday Repair: Repairer desk: Each person has ONE different item. Use all four NOT rules. Find Kit's item and copy its digit.
Read this clue in text

Gear digit 9 Spring digit 2 Hand digit 5 People: Tess, Raj, Kit Tess does NOT have Hand. Raj does NOT have Gear. Raj does NOT have Spring. Kit does NOT have Gear. Find Kit's item. Each item is used once.

Clue 5 of 6

Face

Face desk: Compare the two records at matching numbered positions. Count different pairs once each; ignore box outlines.

Clockmaker Birthday Repair: Face desk: Compare the two records at matching numbered positions. Count different pairs once each; ignore box outlines.
Read this clue in text

Strip A: square, circle, star, diamond, heart, cross, hexagon, triangle. Strip B: square, diamond, star, diamond, hexagon, cross, hexagon, circle. Compare the same numbered position.

Clue 6 of 6

Final

Each recorded result recovers one order note. Use all five notes to put the six named events in order. A>B means A happens before B. Write all six event IDs from first to last; check that every note is satisfied.

Clockmaker Birthday Repair: Each recorded result recovers one order note. Use all five notes to put the six named events in order. A>B means A happens before B. Write all six event IDs from first to last; check that every note is satisfied.
Read this clue in text

Run sheet A: Open case B: Fit spring C: Stop clock D: Test chime E: Clean wheel F: Close case Recovered order notes Order: A=A>C; D=C>A Window: MID=A>E; EARLY=E>A Parts: 13=B>E; 6=E>B Repairer: 2=B>F; 9=F>B Face: 0=D>F; 3=F>D Order rule A>B means A happens before B. Use all five notes. Report all six event IDs in order, with hyphens.

Start after: Order, Window, Parts, Repairer, Face

A different kind of mystery next

Keep the habit of sharing evidence and try a new reasoning task.