The observatory connection
Choose one feeder train and one onward shuttle. Give both train IDs and the time you reach the observatory. No other travel is permitted.
COOPERATIVE FOLIO 03 / ENGLISH LAUNCH EDITION
The Last Timetable.
A railway connection puzzle for two people with different timetables.
The last delivery must reach the observatory before its doors close. One of you has the station ledger; the other has the operating orders. Compare information aloud to arrange a connection, reconcile three clocks, and restore the final departure board.
Exactly 2 players · Three fixed-answer cases · English only
Different papers. One shared deduction.
The five-page sample contains a short setup, both private roles, two optional hints and the complete explained answer. It is Case 01 of the paid edition, with the same answer. You can finish it without buying anything.
- Print one copy. Give page 2 to Dispatcher (Player A) and page 3 to Signalkeeper (Player B).
- Talk freely and make shared notes, but keep your role sheets private.
- Cover pages 4-5 until you want a hint or the solution. Use two pencils and scrap paper; no cutting, glue or app.
Three cases to compare and solve.
Three clocks, one departure
A card records the same departure instant on three station clocks. Find the only valid card that satisfies the operating order, and give the real departure time.
The final departure board
Restore all six trains to six slots. Each train departs once, each slot holds one train. Give the six names in chronological order.
One ZIP includes the same complete 12-page game in A4 and US Letter layouts, plus a README. Separate role sheets, progressive hints and explained answers are included. This launch edition is English only. The answers stay fixed on replay; these are standalone cases, with no purchase of another game required.
Buy the complete game on itch.io · US$3.90 ↗One-time digital purchase. itch.io handles payment, receipts, applicable taxes and full downloads. Clicking this link does not make a purchase.
Keep a place for the next puzzle.
The complete edition includes this free first case plus two more. If you would rather return later, open the game on itch.io and choose Add to collection. To hear about future releases, follow our creator account on itch.io. Saving a game and following its creator are separate, optional actions; the sample stays free.
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About this edition.
Original puzzle text and solution checks were prepared with AI assistance. Cover illustration: Gemini; layout direction: Google Stitch, implemented and checked by Codex. Solutions were checked computationally; independent human playtesting and measured playtime are not claimed. Try the complete free case before buying.
Personal-use printing and partner sharing permitted. No resale or public redistribution. Recreational deduction, with no IQ score.
Also try The Glasshouse Relay, with free samples in four languages, or browse all paper games.