By buying self-adhesive magnets, I increased the magnetic strength and fixed the piece with the magnet on the wrong side this way. I covered the white lines.
I bought the book for its design – large, easy-to-grip wooden pieces, template attached to the book’s binding.
Weak magnets that don’t hold the pieces on the magnetic part if you use it anywhere other than a table or floor. One piece has the magnet on the opposite side, so you can’t assemble the shapes according to the template.The black silhouette shapes in the template have a thin white line between them, making the puzzle easy to solve.