Feedback | Home

MIT Mystery Hunt Puzzle Index: Keyword Data

black and white (logic puzzle)

In the standard form of this puzzle type, a grid is given with black circles in some squares and white circles in others, but mostly blank. To solve it you must fill in either a white circle or a black circle in each box so that all the white circles form a single orthogonally connected group, and the black circles also form such a group, and no 2x2 region is all the same color.

Also called: Yin-Yang logic puzzle


MIT Mystery Hunt 2015 Polyglot
MIT Mystery Hunt 2023 Make Love or War


Nikoli-style logic
Puzzle Types