Ocean Liner Logic Grid Puzzle Book, 45 Printable Whodunit Cases (PDF Download)

Instant download · 145-page PDF · US Letter · print it as often as you like

45 murder cases aboard an ocean liner, each solved with a grid, a pencil and nothing else. Nobody bleeds, nothing is described, and not one case needs a guess.

Same file structure as Volume One, a new ship and 45 new cases. The clue list and the scene are on one page; the grid, with lines for notes, is on the next.

WHAT'S IN THE FILE

- 45 cases, each on two pages — story and clues, then the grid.
- Three tiers of fifteen: Warm-Up, Investigation, Cold Case, ordered by how much work the solving takes.
- 4, 5 or 6 suspects (10, 19 and 16 cases). 27 cases match four things; 18 add a fifth column, Ordered — what each passenger ordered — 7 in Investigation and 11 in Cold Case.
- 721 clues in all, 6 to 28 per case (median 15), in the same seven forms.
- A full solution for every case, pages 100–145, with the reasoning written out clue by clue.
- 35 rooms and 40 objects below and above deck — the mail room, the barber shop, the engine room, the ballroom, the kennels, the wireless cabin, the purser's office; a roll of ticker tape, a copper kettle, a deck quoit.
- The paperback's teaching pages, 5–9, carried over unchanged.

GRIDS 21% BIGGER THAN THE PAPERBACK'S

Every page enlarged 21% from the 6 × 9 in paperback: grid squares measure 4.90 mm to 8.56 mm in this file against 4.04–7.06 mm in the book.

ONE ANSWER, AND NO GUESSING — CHECKED, NOT CLAIMED

Exactly one answer, proved twice by two independent counters; reachable by deduction alone, proved by a solver that only uses the steps a person makes on paper; and no redundant clue — drop any one and the case stops having a single answer. 59 cases were generated for this volume and 14 were thrown out for needing a guess. Page 2 of the file reproduces the paperback's own statement of this word for word.

PRINTING

US Letter, portrait, single-sided, equal margins. 100% / "Actual size", "Fit to page" off. Page 3 is the print guide: how to solve 5–9, cases 10–99, solutions 100–145; Case n is pages 2n + 8 and 2n + 9, its solution page n + 100.

WHAT YOU MAY DO WITH IT

Print as often as you like for yourself and your household, and copies for one group you run — a classroom, a care-home activity hour, a library club. No reselling or sharing the file, no selling the printed pages. Full licence on page 4.

WHAT THIS IS NOT

- A PDF to print. Not a physical book, not an app.
- Not a murder-mystery party kit — no roles, no host script.
- Not editable on screen.
- Also sold as a paperback on Amazon. Separate purchases.
- Every case in this volume is its own: no case and no case title is repeated anywhere in the six volumes. Some character names do recur between Volumes One and Two, which share a name pool.

HOW THESE PUZZLES WERE MADE

Generated, solved and checked by a computer program written for this series; the case text came from the same program's written templates with the help of an AI assistant. Page 2 of the file carries the paperback's own disclosure.