Sweden had a dream start to the match.
Alexander Galante Carlström, who made his 100th cap for Sweden, and Linus Nordgren each had a goal as Sweden raced into a 2-0 lead.
But in the second period they invited the Czech Republic back into the match.
2-0 suddenly became 2-2 after two quick goals.
- Strong from the Czech Republic, we will see how toxic, fast and creative they are, says expert Mattias Samuelsson.
Disturbing pictures of the cog
In the same period, Sweden also suffered a heavy blow.
Rasmus Enström fell over the edge and grinned badly when he grabbed one knee.
Enström then did not play in the third period.
- We have no idea how the injury is, but he is not playing and that is worrying, says commentator Chris Härenstam.
Sweden incurred large amounts of deportations, which in the end became costly.
The Czech Republic made it 3-2 in a four-on-three game.
However, the equalizer came in the final minutes.
Once again, it was Galante Carlström who found the net.
3-3 was also the final score, a result that secured the group victory for Sweden.
Can be pitted against Finland
The group victory means that Sweden can face Finland already in the semi-finals, this after Finland lost against Switzerland.
Finland's group will be decided tomorrow.
Sweden and Finland have faced each other in eight straight finals, now one of the teams can already leave in the semis.