Answer
The answer is as follows. 
Katrielle and the Millionaires' Conspiracy walkthrough
Puzzle Location: Lipski's pâtisserie (Lipski brothers)
Can you find your way through the maze?
To get from the starting point at the bottom-left to the goal at the top-right, you need to break through two sections of wall.
Slide the circle over the section of wall that you think needs to be destroyed.
You cannot destroy the corner section of a path.
The maze is divided into eight separate, self-contained areas.
focus on the areas that connect with the starting point and the goal.
Try to find an area that links the starting point area and the goal area.
At the top-right of the starting piont area, there are two walls that connect to the right-hand side.
Destroying one of these will connect the path to the goal area.
Destroy the wall to the right one step before the end of the starting point area.
Then all you need to do is connect the newly accessed area to the goal area.
The answer is as follows.