The Czechs have won their first match in the 2019 World Junior Championship, beating the Swiss team by 2-1.
The decisive goal by David Kvasnička came just shy of a minute into overtime play.
The Czechs have a day off before taking on Russia on Friday.
The Swiss, meanwhile, on Thursday play Canada, hosts of the U-20 Ice Hockey World Cup in Vancouver.
Karel Gott to get funeral with state honours as singer’s death is mourned at home and abroad
Beijing ends agreement with Prague – but can spat harm Czech capital?
Karel Gott’s Mona Lisa to be put up for auction
Czechs observe day of mourning for pop idol Karel Gott
Thousands pay tribute to deceased national pop icon Karel Gott