Source google image: https://us.123rf.com/450wm/ravennka/ravennka1803/ravennka180300019/98277810-sudoku-for-kids-with-solution-puzzle-for-children-to-complete-each-row-or-column-with-just-one-of-ea.jpg?ver=6
Resoudre puzzle coulissant
Source google image: https://us.123rf.com/450wm/ravennka/ravennka1803/ravennka180300019/98277810-sudoku-for-kids-with-solution-puzzle-for-children-to-complete-each-row-or-column-with-just-one-of-ea.jpg?ver=6