In order to make the game better , each column, each row nine 3 x 3 boxes ( blocks or also name of the area ) that contains numbers between 1 and 9 you need to fill a 9 x 9 grid. A cell is one of the smallest building blocks in the game. In the region between row and column is composed of 81 cells and 9 cells computer the entire game. There are thick lines around certain bolgelerder. This just shows that the game makes it easier.
Different Sudoku games to play : Web Sudoku