I would never do this.
The people who own the site could make alt accounts & use inside knowledge on how the algorithm functions to consistently win against other players.
I have seen rigged crypto sites that did similar things in the past.
Years ago there was a website similar to jeopardy where a person could compete with others to win crypto. The guy who owned the website would actively participate and win, because he knew all the answers to the questions.
PvP (player versus player) may not be a good format unless there's real fairness and quality assurance.
PvE (player versus environment) tends to be more fair and I would guess most would prefer it.