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Logic Grid puzzles give you a set of people, a set of items and a list of clues, and ask you to work out who goes with what. They are also called Einstein puzzles or zebra puzzles. Nothing is guessed — every puzzle is solvable by pure elimination, and the grid exists so you can record what you have ruled out.
Read the categories and the clues.
Mark the grid: a cross for a ruled-out pairing, a tick for a confirmed one.
A confirmed pairing rules out the rest of that row and column.
Work through the clues repeatedly — later passes reveal more than the first.
The puzzle is complete when every pairing is determined.
There are 50 hand-made puzzles, each with three people, three items and three clues, played in order. Assign one item to each person and press Check.
A correct grid counts as solved, earns 25 XP and moves you to the next puzzle. A wrong grid flashes red and lets you try again straight away — there is no penalty, because the aim is to reason it out rather than guess quickly.
Formal deductive reasoning and the discipline of recording negative information. The grid is the point: people fail these puzzles by forgetting what they ruled out, not by failing to reason. More logic games to try next: Safe Cracker and Star Battle.
Logic grid puzzles — also called Einstein or zebra puzzles — are exercises in deduction: every answer follows from the clues without guessing. The famous 'Zebra Puzzle' appeared in Life International in 1962 and is often misattributed to Einstein.
The grid is the important part. Deductive reasoning research consistently finds that errors come less from faulty logic than from overloaded working memory — losing track of what has already been ruled out. Writing down negatives ('Alice does not have the cat') offloads memory onto the page, which is a transferable habit for any multi-constraint problem.
Mark every negative. An unrecorded elimination is an elimination you will redo.
Read the clue list twice through before marking anything. Some clues only make sense in combination.
When you confirm a pairing, immediately cross out the rest of its row and column. That cascade is where most progress comes from.
If you are stuck, look for the category with the fewest open options. The constraint you need is usually attached to it.
No. Every puzzle here is solvable by elimination alone. If you are guessing, there is a clue you have not fully used.
A popular story attributes a famous version to Einstein and claims only 2% of people can solve it. There is no evidence he wrote it and the statistic is invented. It is just a good puzzle.
That pairing is fixed, so nothing else in that row or column can be true. Propagating that is most of the work.
Speed comes from marking negatives automatically rather than deciding each time. It becomes mechanical with practice.