The goal of Sudoku is to fill a 9x9 (4x4, 6x6) grid with numbers, so that each row, column, and 3x3 part of the grid contains all numbers between 1 and 9. Sudoku, as a logical puzzle, can also serve as an intellectual exercise. If you play Sudoku every day, it will help improve your attention, overall intelligence, and logical reasoning ability. Come and join us, lets do Sudoku together~~