Source: wikibot/icosian
= Icosian
{wiki=Icosian}
Icosian refers to a type of mathematical problem or puzzle related to a specific graph known as the icosahedron. The term is often associated with the Icosian game, which involves finding a Hamiltonian cycle in the graph representing the vertices and edges of an icosahedron. In graph theory, a Hamiltonian cycle is a cycle that visits every vertex exactly once and returns to the starting vertex.