Clueless-Sudoku Puzzles

Stretch your brain and keep your mind young with the challenging Clueless Sudoku puzzles.


Clueless Sudoku is an addictive Sudoku variant, it has 9 separate Sudoku grids (not overlapping), with a tenth grid formed from the central 3x3 boxes of the other nine grids. It is called, "Clueless" as there are never any given numbers in those central boxes. Of course, all Sudoku rules apply to the tenth grid as no repetition in rows or columns or blocks. The numbers found in one puzzle give clues for another.


Solving the Clueless Sudoku is a travel adventure between the grids, are you ready?

For easier readability, the font and the size of the puzzle are as big as possible, which unfortunately made the margins tight so you may need an external piece of paper for working out the puzzles if you want. Features:

Size: 8 x 11.5 inch (large size) with softcover and paperback binding. Pages: 158 pages with full-page 100+Clueless Sudoku puzzles. Plus the solutions of all the puzzles at the end. One Puzzle Per Page; this book is great for seniors because of the fairly large font of the puzzle so it is easy to read.


Scientific research has shown that solving logic puzzles as Sudoku keeps your mind younger and your memory sharper.
Stretch your brain with this unique selection of fun Sudoku Variation. Scroll up and order your copy.