Logic Games For Adults: Kohi Gyunyu Logic Puzzles with Answers (Paperback) (ISBN-13: 9781717782144)

Kohi Gyunyu (from Japanese, literally "coffee milk") consists of white, black and gray circles. The aim is to connect circles by horizontal and vertical lines. All connected circles form a group. Each group must contain exactly one gray circle and equal amounts of white and black circles. The lines must not cross other lines. White and black circles cannot be directly connected.

logic puzzles for adults - logic puzzle books for adults - logic puzzle books - logic puzzle adult - logic puzzle books for adults variety - logic puzzle for adults - logic puzzle game - logic puzzle grid - logic puzzle workbook adults - logic puzzle workbook