Is the page exposing solution to the game?

[rf_rf]

I'm a game dev for a long while, and have a strong argument that I've just encountered a cheater (also, no way to report cheating currently, which is violation of rules).
Game replay: https://boardgamearena.com/tableview?table=935404828
And final situation (answer given at 1/6th chance)


Should this be reportable? Or investigated? Or am I just chasing demons online?