"The 2nd Denou-Sen: All About HUMAN VS COMPUTER" Shogi Association of Japan Price: ¥1480 This book, published in 2013, is about the 2nd Denou-Sen. I think you can understand the early Denou-Sen well from this book. There are some minor scuffs on the bottom of the book, but otherwise, there is no noticeable damage. However, this book has been stored at home. Please consider purchasing if you don't mind. #ShogiAssociationofJapan #Denousen #Book #Lifestyle/Hobbies&Entertainment #Mynavi