Heyawake is a binary-determination logic puzzle published by what Japanese publisher that specializes in games, and especially, logic puzzles?
Heyawake Heyawake (Japanese: へやわけ, "divided rooms") is a binary-determination logic puzzle published by Nikoli. As of 2013, five books consisting entirely of "Heyawake" puzzles have been published by Nikoli. It first appeared in "Puzzle Communication Nikoli" #39 (September 1992).
Sekai Project Sekai Project is an American company and video game publisher. They are known for licensing and translating Japanese visual novels into English, but they also publish original English visual novels developed outside Japan, manga, and other non–visual novel video games.