How to Play

What is a Logic Grid Puzzle?

Logic grid puzzles (also known as Einstein puzzles) are deductive reasoning challenges where you use clues to match items across different categories. Your goal is to figure out which items belong together by systematically eliminating possibilities.

The Objective

Use the provided clues to determine the correct relationships between items in different categories. For example, if the categories are "Names" and "Pets", you need to figure out which person owns which pet.

Example: If there are 4 people (Alice, Bob, Carol, Dave) and 4 pets (Cat, Dog, Bird, Fish), you need to match each person to their pet using logical deduction.

Using the Logic Grid

The logic grid is your main tool for solving puzzles. Each cell represents a possible relationship between two items.

Grid Interaction Mechanics

Click any cell to cycle through three states:

Blank
Unknown relationship
✓
Checkmark
Items match (positive relationship)
✕
X Mark
Items don't match (negative relationship)
💡 Tip: When you mark a checkmark in one cell of a row or column, you should mark X's in all other cells of that row and column, since each item can only match with one item from another category.

Solving Strategy

  1. 1
    Read all clues carefully - Start by reading through all the clues to understand what information you have.
  2. 2
    Mark direct relationships - If a clue directly states a relationship (e.g., "Alice owns the cat"), mark a checkmark in that cell.
  3. 3
    Eliminate impossibilities - If a clue rules out a relationship (e.g., "Bob doesn't own the dog"), mark an X in that cell.
  4. 4
    Use deductive reasoning - If you know Alice owns the cat, then Bob, Carol, and Dave don't own the cat. Mark X's accordingly.
  5. 5
    Look for patterns - Sometimes combining multiple clues reveals new information through logical deduction.
  6. 6
    Work systematically - Go through each clue multiple times, as new information often reveals additional deductions.

Helpful Features

💡

Hints

Stuck? Use the hint button to get AI-powered guidance on your next logical step. You get 3 hints per puzzle.

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Auto-Save

Your progress is automatically saved in your browser. You can leave and come back anytime without losing your work.

🎯

Difficulty Levels

Choose from Easy, Medium, or Hard puzzles. Adjust your difficulty preference anytime to match your skill level.

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Daily Puzzle

A fresh puzzle is generated every day at your preferred difficulty level. Challenge yourself daily!

Example Walkthrough

Scenario: Four people (Alice, Bob, Carol, Dave) each own one pet (Cat, Dog, Bird, Fish).

Clue 1: "Alice owns the cat."

→ Mark a checkmark at Alice-Cat
→ Mark X's at Bob-Cat, Carol-Cat, Dave-Cat (others don't own the cat)
→ Mark X's at Alice-Dog, Alice-Bird, Alice-Fish (Alice doesn't own other pets)

Clue 2: "Bob doesn't own the dog or the bird."

→ Mark X's at Bob-Dog and Bob-Bird
→ Since Bob already has X at Bob-Cat, Bob must own the Fish
→ Mark a checkmark at Bob-Fish

Continue this process with all clues until every cell is marked!

Keyboard Navigation

For a faster solving experience, you can use keyboard shortcuts:

  • Tab - Navigate between interactive elements
  • Arrow Keys - Move between grid cells
  • Enter or Space - Toggle cell state
  • Escape - Close modals and overlays

Ready to Play?

Now that you know how to play, it's time to put your logic skills to the test!

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