The Einstein Problem-Lite
Simple
English ES RU

The Einstein's Puzzle is a well-known logic puzzle. It is often called Einstein's Puzzle because it is said to have been invented by Albert Einstein as a boy. However, there is no known evidence for Einstein's or Carroll's authorship. This puzzle can be modified with various conditions to produce a variety of similar puzzles. For starters, we will solve a simplified version of the puzzle.

There are 5 houses on street which are painted 5 different colors: blue , green , red , white and yellow .
In each house lives a person of a different nationality: Brit , Dane , German , Norwegian and Swede .
These people drink a certain beverage: beer , coffee , milk , tea and water .
Smoke a certain brand of cigarettes: Rothmans , Dunhill , PallMall , Winfield and Marlboro .
They keep a certain pet: cat , bird , dog , fish and horse .

None of the owners have the same pet, smoke the same brand of cigarette, or drink the same beverage.

You are given a set of "relations". Each relation connects two identifiers in the owner relationships. For example: "Norwegian-Dunhill" indicates that the Norwegian smokes only Dunhill. "5-dog" indicates that the owner of the 5th house also owns a dog. Similar to Einstein's version of the problem, we will use only these types of relations.

The second argument is a question which you need to answer. The question is represented as two words separated by dash. The first word is a characteristic of the owner while the second is a characteristic ( number, color,nationality, beverage, cigarettes or pet ) you need to determine based on the first characteristic. For example: "horse-cigarettes" asks"What the cigarettes do the owner of the horse smoke?" or "green-number" asks "What is the street number of the green house?".

Input: Two arguments. Relations as a tuple of strings and a question as a string.

Output: The answer as a string.

How it is used: This mission teaches you something about constraint satisfaction problems within the classic context of an Einstein riddle.

Precondition:
All questions have only one possible answer.

## Become Awesome

• No Limits
• More Content
Settings
Code:
Other:
CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

`pip3 install checkio_client`

`checkio --domain=py config --key=`

Sync solutions into your local folder

`checkio sync`

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

`checkio serv -d`

Alternatevly, you can install Chrome extension or FF addon

`checkio install-plugin`
`checkio install-plugin --ff`
`checkio install-plugin --chromium`

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.