A small ball is used instead of a puck and teams of 11 play on ice rinks with curved sticks.
However, it was William who won bragging rights during the pair's penalty shoot-out, scoring two goals to the five-months-pregnant Duchess' one.
At one point, they took a break to chat with young players on the ice, who filled them in on how the sport became so popular in their country.
Associate professor of modern British history at Boston University, Arianne Chernock said, "If you look at the names of their two children - 18th century Hanoverian names with George and Charlotte - you see they're very classic, very traditional, so I would expect them to maintain that deference to tradition".
He said: "They also revealed that they have Ikea pieces for the children's rooms". The Sunday Express reports she and Wheeler secretly gave all seven inches of her cut hair to the Little Princess Trust, an organization that makes wigs from real hair and donates them to children who've lost their hair from chemotherapy treatments.
Pregnant Kate Middleton Competes With Prince William in a Hockey Shootout
No stranger to royal tours, Kate has become the master of mixing home-grown British brands with local labels and designers and always dressing impeccably for the occasion - whethere it's a state function or a casual meet-and-greet.
Following their athletic morning, Catherine and William visited Stockholm's Royal Palace for lunch with King Carl XVI Gustaf, Queen Silvia, and other members of the royal court.
Crown Princess Victoria and Prince Daniel also accompanied them to the Stockholm's Nobel Museum where they learnt more about science. "We hope that this donation will encourage others to consider supporting the charity in the same way". While William stuck with a signature black suit and bow tie, Middleton opted to take a rare fashion risk in a floor-length bright golden yellow gown with a high neck by Erdem.
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