Heyawake is a binary-determination logic puzzle published by what Japanese publisher that specializes in games, and especially, logic puzzles?
Nikoli (publisher): Nikoli Co., Ltd. (Japanese: 株式会社ニコリ , Hepburn: Kabushiki-gaisha , Nikori) is a Japanese publisher that specializes in games and, especially, logic puzzles. "Nikoli" is also the nickname of a quarterly magazine (whose full name is "Puzzle Communication Nikoli") issued by the company in Tokyo.
i don't know