Jeff Heldt

Ying - Yang Puzzles Jeff Heldt

Yin-Yang consists of a rectangular or square grid with white and black circles in some cells. The aim is to place a black or white circle in each empty cell so that all circles of same color are connected to each other, vertically or horizontally. Additionally, no 2 x 2 group of cells can contain circles of the same color.

maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge