Putting central pressure to make the opponent compensate

I really like this subtle thing, that the Swedes did against the Finns in the semifinal in the U19 WFC. It makes the Finnish players have to compensate a lot, and opens up for good positions in the offensive zone as a result of that domino effect.
It works especially well against systems playing one forward, like the 2-2-1.
Videomaterial from the IFF broadcast.
0:00
/2:33