RULE AND SUDOKU PUZZLE

Animation toexplain what is a sudoku puzzle and rule.<br /> A Sudoku puzzle is made of 9 lines.<br /> A Sudoku puzzle is made of 9 columns.<br /> A Sudoku puzzle is made of 9 areas (carr&eacute;s de 3x3 cases).<br /> The puzzle contains digits from 1 to 9 and empty squares.<br /> The aim of this game is to fill in empty squares using digits from 1 to 9, according to the 3 following conditions :<br /> Each digit must be found Once and only once per line .<br /> Each digit must be found Once and only once per column.<br /> Each digit must be found Once and only once per area.<br />