Categories Rules Double Sudoku Post author By SudokuMix Post date 2015-02-27 No Comments on Double Sudoku A double sudoku is made up of two standard sudoku puzzles overlapping. Each of them cannot be solved on its own; you have to use clues from one puzzle to solve the other, and vice versa. A double sudoku—two overlapping puzzles. Tags double ← Killer Sudoku → Extra Group Sudoku Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website