ERRATA
The following is a list of typos in the paper
 P. Selinger. "On the combinatorial value of Hex positions". Integers
 22:G3, 2022.
Note: these typos are only present in the published journal paper,
which is also the ArXiv paper; the version on my website has already
been corrected.
 * Page 18, line 9:
 "M" ----> "G"
 Thanks to Mason Mackaman for pointing out this typo.