Logic Grid Puzzle Generator
Make printable logic grid puzzles in seconds. Use the clues to figure out which color and which animal belongs to each name, at a 3×3 or 4×4 size. Every puzzle's clue set is proven, by exhaustive search, to have exactly one solution — never an unsolvable puzzle and never an ambiguous one. Print or download a PDF with a matching answer key. Free, no sign-up, and everything stays in your browser.
PDF puts the answer key on its own page.
Logic Grid Puzzle
3×3 · Standard (3×3) · 3 problems
Name: ______________________ Date: ____________
Clues
1. Cleo has blue.
2. The one with green has cat.
3. Ben has bird.
Fill in the table
| Name | Color | Animal |
|---|---|---|
| Ana | ||
| Ben | ||
| Cleo |
How to use the logic grid puzzle generator
- 1Choose a difficulty — 3×3 or 4×4.
- 2Read the clues and fill in the table to match each name to its color and animal.
- 3Press Regenerate for a fresh puzzle anytime.
- 4Print the puzzle, or download a PDF with the answer key on its own page.
When this is useful
Deductive reasoning practice
Practice combining direct clues and cross-category clues to eliminate possibilities and find the unique answer.
Early logic puzzles
The 3×3 size is a gentle introduction to logic grid puzzles for students who haven't solved one before.
A harder challenge
The 4×4 size adds a fourth name, color, and animal for a longer, more demanding puzzle.
Fast finishers and enrichment
A self-contained puzzle that needs no extra materials — perfect for students who finish other work early.
Logic and critical thinking centers
Run a standalone reasoning center with a fresh, guaranteed-solvable puzzle every time.
Examples to try
A 3×3 logic grid puzzle
Match 3 names to 3 colors and 3 animals using a short set of clues.
A 4×4 logic grid puzzle
Match 4 names to 4 colors and 4 animals using a longer set of clues, for a harder challenge.
An answer key with the full solution
Download the PDF to get the filled-in table on its own page, showing the exact color and animal for every name.
Tips for better results
Start with direct clues
Direct clues that name a person outright are the easiest place to start filling in the table.
Use cross-category clues to eliminate, not just confirm
A clue like "the one with the red spinner has a dog" links two categories directly — use it to rule out combinations even before you know which name is involved.
No clue is ever extra
Every clue is proven necessary — removing any single one would leave the puzzle with more than one possible answer, so if you're stuck, re-read all of them.
Regenerate for a fresh puzzle
Press Regenerate for a brand-new puzzle with a different, equally solvable clue set.
How the logic grid puzzle generator works
The generator picks a random solution — which color and which animal goes with each name — then builds a set of true clues about it. Clues are added one at a time from every true statement about the solution, skipping any clue that doesn't narrow down the possibilities, until an exhaustive search across every possible matching confirms exactly one solution is consistent with the clues so far.
The clue set is then pruned: any clue that turns out to not be needed once the others are in place is removed, so the final puzzle never includes a clue that adds no information.
Everything is generated on your device, so you can make as many fresh puzzles as you like, instantly and for free. Press Regenerate for a brand-new puzzle using the same settings.
Private by design
- No account and no sign-up. Just open it and start.
- Everything runs on your device, so the worksheet settings you choose and the puzzle and answers you create stays with you.
- Nothing you create is uploaded. No values, names, scores, or generated content are sent to our servers.
- We use Google Analytics only for basic, anonymous pageview counts. It never receives what you enter into the tool.
Frequently asked questions
Is the logic grid puzzle generator free?
Yes, completely free, with no account and no limit on how many puzzles you make. There's no watermark on the printed sheet.
Can I print logic grid puzzles?
Yes. Use the Print button to send the puzzle straight to your printer.
Can I download a PDF?
Yes. Download a clean PDF built on your device, with the clues and blank table on the first page and the filled-in answer key on its own page.
Is every puzzle actually solvable?
Yes. Every puzzle's clue set is checked by an exhaustive search over every possible matching, confirming exactly one solution is consistent with all the clues — never zero, and never more than one.
Are there ever extra clues that aren't needed?
No. The clue set is pruned so every remaining clue is necessary — removing any one of them would make the puzzle ambiguous.
Are worksheet settings or answers uploaded or saved anywhere?
No. The puzzle is built entirely on your device, and the PDF is created there too — nothing is ever uploaded or stored on a server.
Helpful supplies for this activity
Optional supplies that can make printed classroom materials easier to reuse, organize, or share.
Some links may be affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Dry erase pockets
Slide worksheets into reusable sleeves for quick practice and small groups.
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