Free Printable Logic Grid Puzzles PDF (with Answer Keys)
Logic grid puzzles are classic binary constraint satisfaction puzzles where each cell on the grid is logically either TRUE or FALSE. By cross-referencing clues across standard categories, solvers deduce the one correct configuration of the grid.
The puzzles provided on this page feature a traditional format: 3 categories (such as Suspects, Locations, and Motives) and a set of 4 targeted clues each. The optimal solving approach begins by marking all negative constraints (the "cheapest" marks), then aggressively propagating positives via the transitive rule across the grid's quadrants. Advanced solvers will occasionally need to branch-test either/or scenarios.
These puzzles are highly recommended for adults, seniors, puzzle enthusiasts, logic lovers, and for classroom use to develop critical thinking skills. This particular printable collection features a Medium–Hard difficulty level.
Instructions: Use the Print button below or press Ctrl+P to generate the PDF. The print layout is fully optimised for US Letter or A4 sizes. The solutions are printed upside-down at the bottom of each page to prevent accidental spoilers.
For a complete solving masterclass, read our Logic Grid Strategy Guide. Want a faster-paced digital challenge? Sharpen your deduction speed with LexiGrid — a free browser puzzle.
Puzzle 1 — The Gallery Heist
A priceless painting vanished from the Whitmore Gallery. Three suspects were present at the time. Match each suspect to their location during the heist and their potential motive.
- The person in storage was not motivated by financial debt.
- Marcus was not on the rooftop.
- The one with a personal vendetta was at the front entrance.
- Elena did not commit insurance fraud.
| Locations | Motives | ||||||
|---|---|---|---|---|---|---|---|
| Rooftop | Storage | Front Ent. | Fin. Debt | Ins. Fraud | Vendetta | ||
| Suspects | Marcus | ○ | ○ | ○ | ○ | ○ | ○ |
| Diana | ○ | ○ | ○ | ○ | ○ | ○ | |
| Elena | ○ | ○ | ○ | ○ | ○ | ○ | |
| Motives | Fin. Debt | ○ | ○ | ○ | |||
| Ins. Fraud | ○ | ○ | ○ | ||||
| Vendetta | ○ | ○ | ○ | ||||
Puzzle 2 — The Missing Heirloom
A family heirloom was stolen while three guests were travelling. Determine each guest's profession and the city they visited.
- The chef did not visit Rome.
- Theo is not the artist.
- Clara visited Oslo.
- The pilot visited Rome.
| Professions | Cities | ||||||
|---|---|---|---|---|---|---|---|
| Chef | Artist | Pilot | Rome | Oslo | Lima | ||
| Suspects | Oliver | ○ | ○ | ○ | ○ | ○ | ○ |
| Clara | ○ | ○ | ○ | ○ | ○ | ○ | |
| Theo | ○ | ○ | ○ | ○ | ○ | ○ | |
| Cities | Rome | ○ | ○ | ○ | |||
| Oslo | ○ | ○ | ○ | ||||
| Lima | ○ | ○ | ○ | ||||
Puzzle 3 — The Lakehouse Incident
Three individuals were seen around the lakehouse. Deduce what time of day each person was present and the piece of evidence they left behind.
- Reid was not there in the morning.
- The glove was found in the afternoon session.
- Sasha left a receipt.
- Fern was there in the morning.
| Times | Items | ||||||
|---|---|---|---|---|---|---|---|
| Morning | Afternoon | Evening | Keycard | Glove | Receipt | ||
| Suspects | Reid | ○ | ○ | ○ | ○ | ○ | ○ |
| Sasha | ○ | ○ | ○ | ○ | ○ | ○ | |
| Fern | ○ | ○ | ○ | ○ | ○ | ○ | |
| Items | Keycard | ○ | ○ | ○ | |||
| Glove | ○ | ○ | ○ | ||||
| Receipt | ○ | ○ | ○ | ||||
Love these puzzles? Get "The 10-Minute Detective"
15 true crime logic puzzles with escalating difficulty. Perfect for dedicated sleuths.
Buy Now — $9.99 (Instant PDF)Frequently Asked Questions
Are these logic grid puzzles free to print?
Yes — all 3 puzzles on this page are completely free. Print directly from your browser or save as PDF using the Print button above.
What difficulty level are these logic grid puzzles?
Medium to hard. Each puzzle has 3 categories with 4 clues. Ideal for adults and experienced solvers who enjoy deductive reasoning challenges.
Do the printable logic grids include answer keys?
Yes. The solution key is printed upside down at the bottom of each grid sheet to prevent accidental spoilers before you finish.
What paper size do these logic grids print on?
Optimised for US Letter (8.5x11 in) and A4. The print stylesheet hides all navigation and fits each puzzle neatly on one page.