The problem of the three houses on a torus
The problem of the three houses on a torus. You can see other versions of the problem.
You can also try to solve this problem online with the interactive animation Paths without crossings.
Exhibit of matemilano, section "Topology".
© matematita
The image belongs to the sections...:
From the exhibition matemilano (Topology)
Jordan's theorem and the three houses problem (Topology)
The torus (Topology)
Images from the topology section (From the exhibitions of matematita)