In the final state where white resigns, it looks like the king could simply capture the queen instead. Wasn't it unprotected?
> My brain was clearly too melted by that point -- I got my hex diagonals confused. CURSE YOU DIAGONALS!
[0]: https://www.youtube.com/watch?v=bgR3yESAEVE&lc=Ugz_oSLguMoeaVkugGN4AaABAg.9s-LI3bFJ389s-M7pcbfF2