Albert Einsteins Logic Puzzle, Maybe - David Pace, PhD, MBA - Free Printable

This is a classic logic puzzle known as the “Einstein’s Riddle” or “Zebra Puzzle.” The goal is to figure out who owns the fish, based on a set of clues (even though you didn’t list them here — this grid is standard for that puzzle).

Since you’re using a worksheet with checkboxes and house icons, we’ll solve it step by step using logical deduction.

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Step 1: Understand the setup
There are 5 houses in a row. Each house has:
- A color (Red, Green, White, Yellow, Blue)
- A nationality (British, Swedish, Danish, Norwegian, German)
- A drink (Tea, Coffee, Milk, Beer, Water)
- A pet (Dogs, Birds, Cats, Horse, Fish)
- A cigarette brand (Pall Mall, Dunhill, Blend, Bluemaster, Prince)

We need to match each attribute to one house so that all clues fit.

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Step 2: Use common starting points from the classic puzzle

Clue 1: The Norwegian lives in the first house.
→ So House 1 = Norwegian

Clue 2: The Norwegian lives next to the blue house.
→ Since he’s in House 1, House 2 must be Blue.

Clue 3: The green house is immediately to the left of the white house.
→ Possible pairs: Houses 1&2? No, because House 2 is Blue.
Houses 2&3? House 2 is Blue → no.
Houses 3&4? Maybe.
Houses 4&5? Also possible.
But wait — another clue says: The person in the green house drinks coffee.
And the British person lives in the red house.

Also, the Dane drinks tea.

Let’s try placing colors:

House 1: ?
House 2: Blue
House 3: ?
House 4: ?
House 5: ?

If Green is left of White, and House 2 is Blue, then Green can’t be House 1 or 2.

Try Green = House 4, White = House 5 → Then House 4 drinks Coffee (from clue).

Then what about Red? The Brit lives in Red. Can’t be House 2 (Blue), not House 4 (Green), not House 5 (White). So Red could be House 1 or 3.

But House 1 is Norwegian → so if Red is House 1, then Brit = Norwegian → contradiction.

So Red must be House 3 → Brit = House 3.

Then House 1 must be Yellow (only color left).

So far:

House 1: Yellow, Norwegian
House 2: Blue
House 3: Red, Brit
House 4: Green, Coffee
House 5: White

Now check: Is there any other constraint?

The person who smokes Pall Mall keeps birds.
The Swede keeps dogs.
The German smokes Prince.
The person who smokes Blends lives next to the one who keeps cats.
The person who keeps horses lives next to the one who smokes Dunhill.
The person who smokes Blends has a neighbor who drinks water.
The person who smokes Bluemasters drinks beer.
The Dane drinks tea.

Where does the Dane go? Not House 1 (Norwegian), not House 3 (Brit). Could be House 2, 4, or 5.

Drinks: We have Coffee in House 4. Tea is drunk by Dane. Milk? One clue says: The person in the middle house (House 3) drinks milk.

Wait — yes! Classic clue: The person in the center house (House 3) drinks milk.

So House 3: Milk

Then Dane drinks tea → can’t be House 3.

House 4 drinks coffee → not tea.

So Dane must be House 2 or 5.

Say House 2: Dane, Tea

Then House 5: ? Drink left: Beer, Water

Bluemaster smoker drinks beer → so whoever drinks beer smokes Bluemaster.

Water drinker? Clue: Blends smoker has neighbor who drinks water.

Also, Norwegian (House 1) — what does he smoke? What drink?

Drinks assigned:
House 2: Tea
House 3: Milk
House 4: Coffee
Left: Beer, Water → for House 1 and 5.

Suppose House 1 drinks Water → then neighbor (House 2) must smoke Blends (because Blends smoker has neighbor who drinks water).

So House 2 smokes Blends.

Then House 5 must drink Beer → so smokes Bluemaster.

Now cigarettes:

House 2: Blends
House 5: Bluemaster
Left: Pall Mall, Dunhill, Prince

German smokes Prince → German not placed yet.

Nationalities:
House 1: Norwegian
House 2: Dane
House 3: Brit
Left: Swedish, German → for House 4 and 5.

Swede keeps dogs.

Pets: Unknown yet.

Cigarettes left: Pall Mall, Dunhill, Prince → for House 1, 3, 4.

German smokes Prince → so German must be House 4 or 5.

If German is House 4 → smokes Prince.

Then House 5 is Swede → keeps dogs.

House 4: German, Green, Coffee, Prince

House 5: Swede, White, Beer, Bluemaster, Dogs

Now House 1: Norwegian, Yellow, Water, ??? cigarette

House 3: Brit, Red, Milk, ??? cigarette

Cigarettes left: Pall Mall, Dunhill

Pall Mall smoker keeps birds.

Who can that be? House 1 or 3.

Also, horse owner lives next to Dunhill smoker.

And Blends smoker (House 2) is next to cat owner → so cat owner is House 1 or 3.

Let’s assign:

Suppose House 1 smokes Dunhill → then horse owner is next to him → House 2 has horse.

Then House 3 smokes Pall Mall → keeps birds.

Then House 1: Norwegian, Yellow, Water, Dunhill, ??? pet

House 2: Dane, Blue, Tea, Blends, Horse

House 3: Brit, Red, Milk, Pall Mall, Birds

House 4: German, Green, Coffee, Prince, ??? pet

House 5: Swede, White, Beer, Bluemaster, Dogs

Pets left: Cats, Fish

Cat owner must be next to Blends smoker (House 2) → so House 1 or 3.

House 3 has birds → so House 1 must have cats.

Then House 4 gets fish.

Check all clues:

✔ Norwegian in House 1
✔ Next to blue (House 2)
✔ Green (4) left of White (5)
✔ Brit in Red (3)
✔ Middle house (3) drinks milk
✔ Dane drinks tea (2)
✔ German smokes Prince (4)
✔ Pall Mall (3) → birds
✔ Swede (5) → dogs
✔ Blends (2) → next to cats (1)
✔ Horse (2) → next to Dunhill (1)
✔ Blends (2) → next to water (1)
✔ Bluemaster (5) → drinks beer
✔ Fish in House 4 → owned by German

All clues satisfied!

Final Answer:
The German owns the fish.