I think that in that case, it will remain on the cheater's conscience, and the prize can be considered received by that very player, who simply decided to remain anonymous. I don't think anyone would agree to pay money to someone and deprive themselves of the pleasure of the game for the sake of a game disc that they already have and respect on the forum ;)
I'll repeat my question to the organizer. "Will the fact that he submitted the save earlier affect the evaluation of the winner?" I sincerely hope not :)
You are absolutely right about cheating, as well as about the evaluation of the save file;)
It doesn't matter when the save file is submitted!!!. As long as it's within the time frame specified in the rules!