Killer Sudoku Level 3: Hard Vol. 3: Play Killer Sudoku With Solutions 9x9 Grids Hard Level Volumes 1-40 Sudoku Variation Travel Paper Logic Games ... Challenge All Ages Kids to Adult Gift

Let's Play Killer Sudoku! Killer Sudoku is a variation of the traditional Sudoku grid. The puzzle must be solved using the rules of Sudoku. However, the sum of each cell (dotted lines) must also be maintained. This logic based combinatorial number puzzle game using math and arithmetic skills is super fun, kills boredom, great for taking on the go when you travel by road, plane or train! Help your brain get smarter with this paper based Japanese number puzzle. Killer Sudoku comes in 3 levels: Level 1: Easy Vol. 1 - 40, Level 2: Medium Vol. 1 - 40, Level 3: Hard Vol. 1 - 40. Collect all 40 volumes of each level and solve them all! Achieve Sudoku greatness!