Logic Grid Puzzle Generator
Settings
Unlock 4×4 Advanced & 4×5 Expert
3×4 and 3×5 grids free with watermark, at every difficulty and theme. Upgrade for 4-category grids, print-ready PDF with answer key, batch ZIP, and no watermark.
Upgrade from $27Preview
Click Generate Logic Grid or press G
Read the clues, then mark the grid until every person has exactly one match.
How to play a logic grid puzzle
A logic grid (also called an Einstein or zebra puzzle) hides one match between each person and one value from every other category. The clues are all you need.
- Read a clue and mark the grid: an ✕ where a pairing is ruled out, a ● where it is confirmed.
- Each row and column of a sub-grid has exactly one ●, so a confirmed match rules out the rest of its row and column.
- Carry what you learn across sub-grids until every person has one value in every category.
What is a logic grid puzzle?
A logic grid puzzle, also called an Einstein puzzle or a zebra puzzle, is a deduction puzzle. A short story introduces a few people and some categories, such as pets, ages or times. Each person matches exactly one item in every category, and a numbered list of clues gives you just enough to work out every match by reasoning alone.
How to solve one
- The staircase grid pairs every category with every other one. Each small square stands for one possible match.
- Mark ✕ for a pair a clue rules out and ● for a pair you have proved. One ● per row and column of a sub-grid, so a ● crosses out the rest of its row and column.
- Deduce across categories: if the dog owner is Ana and Ana is not the 9 am walker, the dog owner is not the 9 am walker either.
- Re-read the clues after each new ●. A clue that told you nothing at first often settles a square later.
Built for puzzle books and the classroom
KDP adult puzzle books
4 grid sizes and 3 difficulty levels make a natural progression for a brain-teaser book. Every puzzle comes with a matching answer key, the Business puzzle book collects a whole set into one print-ready PDF, and the Activity Book mixes logic grids with other puzzles at KDP trim sizes such as 6×9.
Classroom reasoning worksheets
Logic grids teach careful reading, elimination and if-then reasoning. Start a class on the 3×4 Starter grid at Easy, then move to order clues and bigger grids as students build confidence. 6 friendly themes, from pets to a bake sale, keep it fun.
No AI in these puzzles
Every clue is written from fixed sentence templates bundled with each theme, and a constraint solver picks only the clues the puzzle needs. Each puzzle is then checked to have exactly one solution before you see it. Nothing is written by an AI model.
Logic grid FAQ
Is a logic grid puzzle the same as an Einstein or zebra puzzle?
Yes. Logic grid puzzles are also called Einstein puzzles or zebra puzzles. Each one hides a single set of matches, and the clues give you just enough to find it by deduction.
Does every puzzle have exactly one solution?
Yes. A constraint solver works the puzzle out from its clues alone, and a separate search confirms there is exactly one solution before the puzzle is shown, so it can always be solved by reasoning alone.
Which sizes and difficulty levels can I choose?
4 grid sizes (3×4 Starter, 3×5 Standard, 4×4 Advanced and 4×5 Expert, categories by values), 3 difficulty levels (Easy, Medium, Hard) and 6 themes. Easy uses direct clues only, Medium adds order clues such as earlier or cheaper, and Hard needs trial-and-error reasoning.
Can I print an answer key?
Yes. Tick Show solution in the settings to render the same puzzle with its solution table filled in, ready to use as the answer page of a book or worksheet.