If you had read the rules of the blitz tournament correctly, and specifically those for stage six, there would be no such questions.
Now to the point:
To unearth the Grail, you need to visit all the obelisks and save a game with the visited obelisks but without having unearthed the Grail yet. This rule has not been canceled.
In stage six, it was allowed to dig up the Grail in one day.
That is, before digging up the Grail, the hero can run around a bit...
How this is done is written here.
Sincerely.
And it says anything. So, it means that you can dig it up without visiting the obelisk. Please correct this.
So Yaroogle carefully read the rules, and there is nothing to blame him for.