Adds Zebra/Murdle/Einstein/Grid Style Puzzles

[Miserlou]

Ex:

This is a logic puzzle. There are 4 houses (numbered 1 on the left, 4 on the right), from the perspective of someone standing across the street from them. Each has a different person in them. They have different characteristics:
 

    Each person has a unique name: arnold, peter, alice, eric
    The people are of nationalities: norwegian, swede, dane, brit
    Everyone has something different for lunch: stew, pizza, spaghetti, grilled cheese
    Each person has a favorite color: white, red, yellow, green


    The Dane is in the third house.
    The Swedish person is in the second house.
    The person whose favorite color is red is Arnold.
    The person who loves yellow is Alice.
    Eric is in the fourth house.
    Alice and the person who loves white are next to each other.
    Arnold is in the first house.
    The Dane is the person who is a pizza lover.
    Peter is directly left of the person who loves the stew.
    The British person is the person who loves the spaghetti eater.

Puzzle generation from https://github.com/nouhadziri/faith-and-fate, hacked up slightly and added as contrib. Visualization code is unused but included in case it's useful in the future.

Oneshotted by DS-R1 in 120 seconds. Configurable difficulty with 'm' and 'k' parameters from 2 to 7.

[andreaskoepf]

minor comments

[andreaskoepf]

This looks like a leftover for Game of Life?

[andreaskoepf]

Thank you very much, Rich!