Use clues and deduction to figure out which items belong together. 20 puzzles across 4 difficulty levels.
Logic grid puzzles are deduction games where you use a set of clues to figure out which items from different categories belong together. You are given a grid that crosses every category against every other category, and you mark cells as Yes or No based on what the clues tell you. No math is required — just careful reading and logical elimination.
Each puzzle gives you several categories (like People, Pets, and Colors) with the same number of items in each. Your job is to match every item in one category with exactly one item in every other category. Read the clues, mark definite matches with a green check, and eliminate impossibilities with a red X. When you place a Yes in a cell, the rest of that row and column in the sub-grid are automatically marked No. Work through all the clues and use cross-referencing between sub-grids to find the one unique solution.
Start with the most definitive clues — ones that directly tell you a specific person has a specific item. Mark that cell as Yes and the grid will automatically X out the rest of that row and column. Then work through indirect clues, using elimination to narrow down possibilities until every category pair has exactly one Yes per row and column.
Look for clues that directly link two items first — these give you immediate Yes marks. Next, find negative clues that eliminate possibilities. Pay attention to transitive logic: if A goes with B, and B goes with C, then A goes with C. Cross-reference between sub-grids to find hidden deductions. When a row or column has only one empty cell left, that must be a Yes.
Yes, studies show that logic puzzles improve critical thinking, working memory, and pattern recognition. A 2019 study in the International Journal of Geriatric Psychiatry found that people who regularly engage in word and number puzzles have sharper cognitive function. Logic grid puzzles specifically exercise deductive reasoning — the same skill used in scientific analysis, programming, and everyday decision-making.
Last updated: March 2026