Color Sudoku Vol. 9: Play 9x9 Grid Color Sudoku Easy Volume 1-40 Coloring Book Pencil Crayons Play Them All Become A Sudoku Expert Paper Logic Games Become Smarter Brain Teaser Numbers Math Puzzle Genius All Ages Boys and Girls Kids to Adult Gifts

Let's Play Color Sudoku! This logic based combinatorial number puzzle game is super fun, kills boredom, great for taking on the go when you travel by road, air plane or train! Help your brain get smarter with this paper based puzzle. Like a coloring book, use coloring pencils or crayons for a fun colorful experience. Collect all 40 volumes of the each level and solve them all! You'll be on your way to Sudoku greatness!