The TietzeGraph() command constructs the Tietze graph.

The Tietze graph is a cubic graph with 12 vertices and 18 edges, named after Heinrich Franz Friedrich Tietze.

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

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

$F≔\mathrm{TietzeGraph}\left(\right)$

$F≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 12\; vertices\; and\; 18\; edges}$

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

$\mathrm{false}$

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

$3$

$\mathrm{DrawGraph}\left(F\right)$

"Tietze graph", Wikipedia. http://en.wikipedia.org/wiki/Tietze_graph

The GraphTheory[SpecialGraphs][TietzeGraph] command was introduced in Maple 2019.

For more information on Maple 2019 changes, see Updates in Maple 2019.