Sudoku Flow - Increase Focus

Sudoku Flow provides loads of fun 9x9 Sudoku puzzles! Improve your focus and your working memory while challenging yourself with this number placing puzzle. HOW TO PLAY Fill the 9×9 grid with digits so that each row, column, and the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9. CHANGE DIFFICULTY Choose different difficulty levels to find the right level of challe…