The <a href="https://en.wikipedia.org/wiki/Foster_graph" class="extiw" title="en:Foster graph">Foster graph</a> is <a href="https://en.wikipedia.org/wiki/Hamiltonian_graph" class="extiw" title="en:Hamiltonian graph">Hamiltonian</a>.
Claudio Rocchini
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>