Soduku Scientist: 9x9 Very Easy

Soduku Rules:You can use only numbers from 1 to 9.Each 3×3 block can only contain numbers from 1 to 9.Each vertical column can only contain numbers from 1 to 9.Each horizontal row can only contain numbers from 1 to 9.Each number in the 3×3 block, vertical column or horizontal row can be used only once.The game is over when the whole Sudoku grid is correctly filled with numbers.