This is a sudoku puzzle.
It is made up of a 6x6 picture grid.
Some of the pictures are already in place in the grid.
The others are in a pile to the left of the grid.
Your task is to input the missing pictures.
Each row and each column have the same pictures [1] [2] [3] [4] [5] [6].
Inputted pictures have a blue frame around them.
You can move the inputted pictures around within the frames at any time.
* Take care, when you add the last one the grid becomes "frozen".
To start the activity again simply refresh the page.