Hikaru no Go (illustrated by Ohbata Takeshi) #manga
Blanc et Noir (French for "White and Black") was the sole Death Note Artbook illustrated by Takeshi Obata. It was never released outside of Japan. Aside from Death Note art, the book contains various other works by Obata that have nothing to do with the series.
Takeshi Obata, Hikaru no Go, Sai - Hikaru no Go Illustrations, Hikaru Shindo
Hikaru no Go Manga Poster
Takeshi Obata sai] - Google Search
ヒカルの碁 完全版 表紙 - Google 検索
Takeshi Obata's "Black et Noir" Artbook: Hikaru no Go