Sudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 squares . Each row, column and square (9 spaces each) needs to be filled out with the countries flag, without repeating any flags within the row, column or square Learning about the country flags. It increases their mental ability as well as focus on each and every part of the puzzle. This game has something to learn so it promotes healthy competition among childrens and improves problem-solving skills.