Einstein's five houses riddle
Let us assume that there are five houses of different colors next to each other on the same road. In each house lives a man of a different nationality. Every man has his favorite drink, his favorite brand of cigarettes, and keeps pets of a particular kind.
1)The Englishman lives in the red house.
2)The Swede keeps dogs.
3)The Dane drinks tea.
4)The green house is just to the left of the white one.
5)The owner of the green house drinks coffee.
6)The Pall Mall smoker keeps birds.
7)The owner of the yellow house smokes Dunhills.
8)The man in the center house drinks milk.
9)The Norwegian lives in the first house.
10)The Blend smoker has a neighbor who keeps cats.
11)The man who smokes Blue Masters drinks bier.
12)The man who keeps horses lives next to the Dunhill smoker.
13)The German smokes Prince.
14)The Norwegian lives next to the blue house.
15)The Blend smoker has a neighbor who drinks water.
The question to be answered is: Who keeps fish?
This not my original question but one of the questions I like the most.It was designed by THE GREAT ALBERT EINSTEIN
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1 solution
a) We know that Norwegian lives in the 1st house (Hint: #9) and next to him lives a guy who stays in a blue house (Hint: #14). So far we have the following:
1st House 2nd House Norwegian Blue House
b) We know that the green house is on the left of the white house (Hint: 4), therefore we can form a new group with the Green and White house next to each other.
Green House White House
c) Now think carefully the combination of (a) and (b). We should reach to the conclusion that the Norwegean guy who lives in the first house, he either lives in the Red or Yellow house since the Green & White houses group can only have a position of either 3-4 or 4-5.
d) Since the Brit is the guy who lives in the Red house (Hint: 1), now we definitely know that the Norwegian lives in the Yellow house. So far we have the following information:
1st House 2nd House Norwegian
Yellow
Blue
British Red
Group:
Green House White House
e) Next, we know that the owner of the Green house drinks coffee (Hint: 5) and the man living in the center house drinks milk (Hint: 8). As a result, we conclude that the group of Green and Yellow house are the 4th and 5th house in order and that the center house (number 3) is the Brit.
1 2 3 4 5 Norwegian British
Yellow Blue
Red
Green White Milk Coffee
f) Hint 7 gives us another information on the first house (The owner of the yellow house smokes Dunhill). In-addition, the man who keeps the horse lives next to the man who smokes Dunhill (Hint 11), therefore the man living in house #2 keeps horses.
House 1 2 3 4 5 Nation Norwegian British
Color Yellow Blue
Red
Green White Drink Milk Coffee
Pet Horses
Smoke Dunhill
g) Hint 15 states that "The man who smokes Blend has a neighbor who drinks water." We conclude that only 2 people can have a neighbor who drinks water (House 1&2), but since House #1 already smokes Dunhill that means that House #2 smokes Blend and House #1 drinks water.
House 1 2 3 4 5 Nation Norwegian British
Color Yellow Blue
Red
Green White Drink Water Milk Coffee
Pet Horses
Smoke Dunhill Blend
h) Hint 12 states "The owner who smokes Bluemaster drinks beer." See the table above and you will notice that we are missing the drink only for houses 2 and 5 but since we already know that the owner of house 2 smokes Blend, then the combination of Hint 12 applies to house #5.
House 1 2 3 4 5 Nation Norwegian British
Color Yellow Blue
Red
Green White Drink Water Milk Coffee Beer Pet Horses
Smoke Dunhill Blend Bluemaster
i) Hint 3 states that "The Dane drinks tea.". We are missing only the drink for house #2 therefore this applies to house #2.
House 1 2 3 4 5 Nation Norwegian Danish British
Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Horses
Smoke Dunhill Blend Bluemaster
j) Hint 10 states "The man who smokes Blend lives next to the one who keeps cats." As a result, house #1 keeps cats since house #2 has the owner who smokes Blend.
House 1 2 3 4 5 Nation Norwegian Danish British
Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Cats Horses
Smoke Dunhill Blend Bluemaster
k) Hint #13 states that "The German smokes prince". We are missing the nationalities of the owners who live in house #4 and #5 but since the owner of house #5 smokes Bluemaster, this hint applies to house #4.
House 1 2 3 4 5 Nation Norwegian Danish British German
Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Cats Horses
Smoke Dunhill Blend Prince Bluemaster
l) Hint #6 states that "The person who smokes Pall Mall rears birds". We are only missing the tabacco of House #3 therefore:
House 1 2 3 4 5 Nation Norwegian Danish British German
Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Cats Horses Birds
Smoke Dunhill Blend Pall Mall Prince Bluemaster
m) Finally hint #2 states that "The Swede keeps dogs as pets". This combination can only be applied to house #5.
House 1 2 3 4 5 Nation Norwegian Danish British German Swedish Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Cats Horses Birds Dogs Smoke Dunhill Blend Pall Mall Prince Bluemaster
n) Now who owns the fish? The German owns the fish!!!
Congratulations, according to Einstein you now belong to the 2% of the people who can solve this riddle!!!
House 1 2 3 4 5 Nation Norwegian Danish British German Swedish Color Yellow Blue
Red
Green White Drink Water Tea Milk Coffee Beer Pet Cats Horses Birds FISH Dogs Smoke Dunhill Blend Pall Mall Prince Bluemaster
So, the German has the fish, where there is an empty spot. This is a solution I found, with the help of 2 other friends. Please let us know if this was helpful. I am just getting used to Brilliant, so I don't know how to add tables and all that, so please pardon me if this was messy.