Sudoku to 3-Tsu no Puzzle - Nikoli no Puzzle Variety / release r24ayec3 / correction
Suggest a correction 数独と3つのパズル~ニコリのパズルバラエティ~, Nintendo 3DS, JP
Corrections are GitHub issues on the public data repository, so each one is in the open with its evidence. This page fills the issue in; on GitHub you say what kind of evidence it is and submit (a GitHub account is needed). How corrections are checked.