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Logic Puzzle Solver Grid – Online Interactive Deduction

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Logic Puzzle Solver Grid

Interactive deduction grid – click cells to mark relationships

Preset Puzzles
🐾 Classic Pet Puzzle
3 people, 3 pets – beginner
☕ Drink Preference
4 people, 4 drinks – intermediate
🏠 House Colors
4 owners, 4 colors – intermediate
✏️ Custom Puzzle
Define your own categories
Categories
Clues 3
Alice does not have the Dog.
Bob's pet is not the Fish.
Carol has the Cat.

Click a clue to mark it as used

Person × Pet
Yes: 0 No: 0 ?: 0
Tap: Empty ✓ Yes/Match ✗ No/Exclude ? Maybe Click to cycle · Right-click reverse
Frequently Asked Questions
What is a Logic Puzzle Grid?

A logic puzzle grid is a visual deduction tool that helps you track relationships between items in different categories. By marking cells as yes (match), no (exclude), or maybe, you systematically eliminate possibilities until only the correct pairings remain. It's widely used for solving Einstein-style riddles and LSAT logic games.

How does the Auto-Deduce feature work?

Auto-Deduce applies constraint propagation rules: if a row has a ✓ match, all other cells in that row and column are automatically marked ✗. If only one possible cell remains in a row or column, it's marked ✓. This mimics the logical reasoning process and helps catch deductions you might have missed.

Can I create my own custom puzzle?

Yes! Select the Custom Puzzle preset, then edit the category names and item lists. You can have 2–8 items per category. Enter your own clues in the clues panel and use the grid to solve your unique logic puzzle. Great for teachers creating classroom activities.

What do the different cell states mean?

✓ (Green) = Confirmed match between the two items. ✗ (Red) = Definitely not a match. ? (Yellow) = Possibly a match, still under consideration. Empty = Not yet evaluated. Cycling through states helps you methodically work through each clue.

Tips for solving logic puzzles faster

1) Start with the most restrictive clues. 2) After each mark, check the affected row and column for new deductions. 3) Use the Auto-Deduce button to catch cascading implications. 4) If stuck, look for rows/columns with only one empty cell remaining. 5) The "maybe" state is useful for temporary hypotheses.

Is this tool mobile-friendly?

Absolutely! The grid is fully responsive with touch-optimized cells on mobile devices. The layout stacks vertically on smaller screens, and cells remain large enough for comfortable tapping. You can solve logic puzzles on your phone or tablet with ease.

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