Click the SU-DO-KU then it display the table which is 9 X 9 rows and columns. In this table some numbers are exist either row or column to help the user to complete the game. Click the “hint button” it automatically fills some numbers in table to help the user to solve su-do-ku. The game is over when all the rows and columns are filled with correct numbers, i.e. no repeated number in square boxes and if any number exists in column or row the same number should not exist in corresponding that column or row(9X9 matrix). If you fill correct numbers then you win the game and submit the time to be taken to fill the numbers in matrix.