Einstein Riddle Answer: Who Owns the Fish? (Step by Step)

7 min read · IQ Tester

The Einstein riddle who owns the fish answer is: the German, who lives in the green house (house 4), drinks coffee and smokes Prince. You get there by placing the "fixed" clues first (Norwegian in house 1, milk in the middle, blue in house 2), then chaining deductions until only one spot is left for the fish. Below are all 15 clues and the full solving path, not just the answer.

If long logic chains make you lose track halfway, IQ Tester shows whether it's logic, memory or focus that's slipping and gives you a daily drill: Find my weak spots.

The riddle (all 15 clues)

There are 5 houses in a row, each painted a different color. In each house lives a person of a different nationality. Each owner drinks a different drink, smokes a different brand of cigar and keeps a different pet.

The question: who owns the fish?

The Einstein riddle clues:

1. The Brit lives in the red house.
2. The Swede keeps dogs as pets.
3. The Dane drinks tea.
4. The green house is on the immediate left of the white house.
5. The green house's owner drinks coffee.
6. The person who smokes Pall Mall rears birds.
7. The owner of the yellow house smokes Dunhill.
8. The man living in the center house drinks milk.
9. The Norwegian lives in the first house.
10. The man who smokes Blends lives next to the one who keeps cats.
11. The man who keeps horses lives next to the man who smokes Dunhill.
12. The owner who smokes BlueMaster drinks beer.
13. The German smokes Prince.
14. The Norwegian lives next to the blue house.
15. The man who smokes Blends has a neighbor who drinks water.

(The puzzle dates from an era of cigar ads. Some modern versions swap brands for snacks or sports, but the logic is identical.)

Houses are numbered 1 to 5 from left to right. "Immediate left" means directly next door, one number lower.

Set up the grid

The fastest way to solve the 5 houses Einstein riddle is a simple table: houses across the top, categories down the side.

Use pencil (or a notes app). You'll write facts in and cross options out. If you've never used a logic grid, our guide on how to solve logic grid puzzles covers the X-and-dot method in detail.

Clues that solve themselves first

Einstein riddle tip #1: start with clues that name an exact position. They need no guessing.

• Clue 9: Norwegian → house 1.
• Clue 8: Milk → house 3.
• Clue 14: Norwegian (house 1) is next to blue. House 1 only has one neighbor, so blue → house 2.

Three facts, zero thinking. That's the foothold.

The chain of deductions, step by step

Here's the Einstein riddle solution, one link at a time. Each step uses only facts you already have.

Step 1: find green and white

Clue 4 says green is directly left of white. Possible pairs: 1-2, 2-3, 3-4, 4-5.

• 1-2 and 2-3 are out, because house 2 is blue.
• 3-4 is out, because green drinks coffee (clue 5) and house 3 drinks milk.
• So green → house 4, white → house 5.

Step 2: red, yellow and the Brit

The colors left are red and yellow, for houses 1 and 3. The Brit lives in red (clue 1), but house 1 is the Norwegian. So red → house 3 (with the Brit), and yellow → house 1.

Step 3: Dunhill and horses

Yellow smokes Dunhill (clue 7), so house 1 smokes Dunhill. Horses live next to Dunhill (clue 11). House 1's only neighbor is house 2, so horses → house 2.

Step 4: what house 1 drinks

Drinks: tea, coffee, milk, beer, water.

• Not milk (house 3) and not coffee (house 4, green).
• Not tea: the Dane drinks tea (clue 3), and house 1 is the Norwegian.
• Not beer: beer goes with BlueMaster (clue 12), and house 1 smokes Dunhill.

So house 1 drinks water.

Step 5: Blends

Clue 15: the Blends smoker has a neighbor who drinks water. Only house 2 is next to house 1, so house 2 smokes Blends.

Step 6: tea, beer and the Dane

Drinks left: tea and beer, for houses 2 and 5. House 2 smokes Blends, so it can't be the beer drinker (beer = BlueMaster). So house 2 drinks tea (and is the Dane, clue 3), and house 5 drinks beer and smokes BlueMaster.

Step 7: German and Swede

Nationalities left: German and Swede, for houses 4 and 5. The German smokes Prince (clue 13), but house 5 smokes BlueMaster. So German → house 4 (Prince) and Swede → house 5 (dogs, clue 2).

Step 8: Pall Mall and birds

The only smoke left is Pall Mall, for house 3. Pall Mall rears birds (clue 6), so birds → house 3.

Step 9: cats

Clue 10: Blends (house 2) lives next to cats. Neighbors are houses 1 and 3, and house 3 has birds. So cats → house 1.

Nine steps, each depending on the last one. This is where most people lose the thread and start guessing. Holding a chain like this in your head uses working memory and logic, and it's hard to judge which one is your bottleneck alone. IQ Tester's logic and pattern questions check that for you and point to a short daily drill for whichever is weaker. Find my weak spots

The answer: who owns the fish

Only one pet is left (the fish) and one house without a pet: house 4.

The German owns the fish.

The full grid, solved:

Double-check against any clue you like. They all hold. That's the Einstein riddle who owns the fish explanation, start to finish.

Did Einstein really write it?

Almost certainly not. There's no evidence Albert Einstein wrote this puzzle. A version called the "Zebra Puzzle" was published in Life International magazine in 1962, years after Einstein died, and it's been retold with different details ever since.

The claim that "only 2% of people can solve it" also has no known source. It's a viral hook, not a statistic. The truth is more encouraging: anyone patient with a grid can solve it.

Similar puzzles to try

Einstein riddle tips that transfer to every logic puzzle:

• Place fixed positions first.
• Look for "only one option left" moments.
• Use "not" clues to eliminate, not just "is" clues to confirm.
• Write everything down. Memory is the enemy here.

Next up:

• River crossing puzzles: the fox, chicken and corn, plus harder versions.
• Lateral thinking puzzles for teens: the opposite skill, where step-by-step logic isn't enough.
• Cognitive reflection test questions: short traps that punish your first answer.

Train the logic chain behind the fish

The Einstein riddle who owns the fish answer is the German, but the real win is the method: fixed facts first, then one deduction at a time. If you lost the chain halfway, that's a trainable skill. IQ Tester's 20 untimed questions give you a free score band and three of your four reasoning strengths in a few minutes, and its guides turn your weak spot into a short daily drill.

Find my weak spots

FAQ

Who owns the fish in the Einstein riddle?

The German owns the fish. He lives in the green house (house 4), drinks coffee and smokes Prince.

How many clues are in the Einstein riddle?

The classic version has 15 clues about 5 houses, with 5 categories: color, nationality, drink, smoke and pet. Some versions change the categories, but the structure is the same.

Did Einstein actually create the Einstein riddle?

There's no evidence he did. A version known as the Zebra Puzzle appeared in Life International in 1962, and the Einstein name seems to have been added later to make it sound harder.

Is it true only 2% of people can solve the Einstein riddle?

There's no known source for that number. It's a viral claim. With a grid and patience, most people can solve it.

What's the best way to solve the Einstein riddle 5 houses puzzle?

Draw a 5-by-5 grid, place the position clues first (Norwegian in house 1, milk in house 3), then use each new fact to unlock the next clue. Write every deduction down so you don't have to hold it in memory.