David Kampf and Roman Cervenka scored 69 seconds apart in the second period, and Czechia beat Denmark 3-2 on Tuesday to advance to a quarterfinal showdown with Canada.
Czechia gets a second shot at the tournament favorite after losing to Canada 5-0 last week in their opener. They play on Wednesday.
Martin Necas also scored for the Czechs in a busy second period when the Colorado Avalanche forward one-timed a slap shot past goalie Frederik Andersen on a power play to open the scoring.
Denmark tied it at 1-1 on Alexander True's goal at 29:02, but Kampf quickly put the Czechs back in front, and Cervenka's goal 69 seconds later made it 3-1.
Nick Olesen's power-play goal closed the gap before the end of the second, but Czechia held on.