Brain tornado

Brain tornado is a logical puzzle that played on a board. The objective of the game is to place numbers in all the squares on the board. The only rule that must be followed is that every row, column and 3x3 box must contain the numbers l-to-9 and there must be no repetition of any number within any row, column or 3x3 box. The Brain tornado puzzle will give some hints to the user to fill the boxes.