- Dwango Co., Ltd., Wakara Co., Ltd., Sugakubunka Co., Ltd., Timeintermedia, Inc.
- 280 total number
- Japan (Chofu)
The largest multi-sudoku puzzle consists of 280 sudoku grids and was achieved by Timeintermedia, Inc., Sugakubunka Co., Ltd., Wakara Co., Ltd. and Dwango Co., Ltd. (all Japan) in Chofu, Tokyo, Japan, on 7 October 2018.
The attempt was taken place as a part of a math event called MATH POWER since 2016.