I don't understand if it is true. I was looking for some games on the Alekhine defence, when I found 2 which are strange, and the same player is involved, in the first is clear that White would have won. In the second strangely Black doesn't get White's queen winning the game. Since the players in question are 2500+, it doesn't make sense. But another guy said that in Poland is common bribing during a tournament. I don't know if it is true, or someone can corroborate on the subject.
Here the games:
This is the second game, which doesn't make sense, since at move 20th Houdini coonfirms Black wins if he takes in D3: