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Volume 2 of Sudoku 16x16 brings even more large puzzles for fans of bigger Sudoku. And with each puzzle being 7 inches wide, there's plenty of room to solve on the page too. Each of these 50 carefully-crafted puzzles has full 8-way symmetry and a guaranteed sensible logical solution. All puzzles can be solved by scanning the rows, columns and 4x4 boxes, without any requirement to write pencil marks into the grid.