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Logic Grid

Logic Grid

Solve deduction puzzles using logical reasoning. Can you crack Einstein's Riddle?

Ready to Play?

Use logic to match items across categories. Only one correct solution!

Easy • 3 categories, 3 items each
Medium • 4 categories, more complex
Einstein's Riddle • The famous puzzle!

What is Einstein's Riddle?

Einstein's Riddle (also called the Zebra Puzzle) is a famous logic puzzle allegedly created by Albert Einstein as a boy.

He reportedly claimed that only 2% of the population could solve it!

The puzzle presents a set of clues about five houses, their owners, and various attributes. Your goal: figure out who owns the fish.

How to Play Logic Grid Puzzles

📖

Read the Clues

Each clue tells you a relationship between items in different categories.

✓✕

Mark the Grid

Click cells to mark ✓ (yes, match) or ✕ (no, doesn't match).

🧠

Deduce the Solution

Use elimination and logic to find the one correct combination!

About Logic Grid Puzzles

Logic grid puzzles, also known as logic problems or zebra puzzles, are a type of constraint satisfaction puzzle. You're given a set of categories and clues, and must determine the unique solution through deduction.

These puzzles test your logical reasoning skills and ability to track multiple possibilities simultaneously. The grid helps you visualize which combinations are possible and which have been eliminated.

Popular variations include the Zebra Puzzle, Einstein's Riddle, and countless themed puzzles involving houses, jobs, pets, and more!