by Serhiy Grabarchuk Jr
6 matchsticks are arranged into the stylized image of a pinwheel. The pinwheel spins clockwise.
How many matchsticks have to be moved to a new position in order to make the pinwheel rotating counterclockwise?
The shape of the new pinwheel has to be identical to the initial one, only mirrored.
The two matchsticks have to be moved as is shown in the diagram.