The KittellGraph() command constructs the Kittell graph.

The Kittell graph is a planar graph with 23 vertices and 63 edges.

$\mathrm{with}\left(\mathrm{GraphTheory}\right)\:$

$\mathrm{with}\left(\mathrm{SpecialGraphs}\right)\:$

$K≔\mathrm{KittellGraph}\left(\right)$

$K≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 23\; vertices\; and\; 63\; edge(s)}$

$\mathrm{IsPlanar}\left(K\right)$

$\mathrm{true}$

$\mathrm{ChromaticNumber}\left(K\right)$

$4$

$\mathrm{DrawPlanar}\left(K\right)$

"Kittell graph", Wikipedia. http://en.wikipedia.org/wiki/Kittell_graph

The GraphTheory[SpecialGraphs][KittellGraph] command was introduced in Maple 2021.

For more information on Maple 2021 changes, see Updates in Maple 2021.