What are the rules of curling?: Understanding curling as a sport

What are the rules of curling?: Understanding curling as a sport

Samuel Lisubila
updated at April 12, 2023 at 8:23 PM

Curling is a sport played on ice, where teams take turns sliding stones made of granite towards a target known as a House. It was invented in Scotland in the 16th century, where it was played on ponds and lochs. The sport's unorthodox nature might often cause its rules to get lost in translation for new fans. Read on to find out what are the rules of curling and how to understand it as a sport.

What are the rules of curling?
Han Yu of China competes against Japan on Day 10 of the Beijing 2022 Winter Olympic Games at the National Aquatics Centre on 14 February 2022 in Beijing, China. Photo: Mao Jianjun
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Curling is one of the oldest sports and has gained popularity worldwide. While it might not be the most popular sport, it has gained recognition in major tournaments, including the Olympic and Paralympic winter sport, with medal disciplines for Women's, Men's, Mixed Doubles and mixed Wheelchair teams. With that said, here are the major rules of curling.

Rules of curling

The sport is not one of the most popular, but its rules make it simple and easier to embrace. With a bit of effort and research, the sport is more exhilarating as it attracts millions of fans worldwide. Some of the basic rules of the game are highlighted below.

Players, Equipment and ice specifications.

What are the rules of curling in the Olympics?
From left: Oskar Eriksson, Rasmus Wranaa and Christoffer Sundgren of Sweden during the Beijing Winter Olympics at the National Aquatics Centre on 19 February 2022 in Beijing, China. Photo: Cui Nan
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Curling is played on a flat, smooth surface of ice measuring 45-46m long and 4.4-5m wide, with two teams having four players each. Eight granite stones, also called rocks weighing between 17 to 20 kgs, with a maximum circumference of three feet (36 inches) wide and a minimum height of 4.5 inches tall, are used.

A circular target is made up of a blue outer circle with a 12ft diameter known as the 'House'. Inside the House is a ring, four rings which help define which curling stones are closest to the centre, commonly known as the Button. Other additional pieces of equipment include brooms, footwear and optional stabilisers, which are subject to review by organisers if required.

Throwing order rules

As it is for batting orders in baseball or softball, there is a certain order in which curling throws are made within each team. The order follows: The lead, second, vice, then skip. The hardness of the throw increases from the lead to the skip, respectively, as by the time it is the skip's turn to attempt, there are already several stones on the ice.

However, in mixed doubles, there are two players, but only five stones are thrown. One player throws the first and last stones while the other throws the second, third and fourth stones.

Hog line rule

What are the rules of mixed doubles curling?
Sgt. Bud Perry of Metro police blows the whistle for a curling rules infraction on skip Paul Savage, who is over the hog line. Photo: Dickson Darrell
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There are two hog lines in front of each House for the teams. One indicates when the rock must have left the thrower's hand. If the player releases the stone too late, it must be eliminated before reaching the House and other placed stones. The other hog line plays a similar role as the tee line, indicating the 'Free Guard Zone'.

Burning a stone

After a rock is thrown, a sweeper might accidentally hit it, or a hat might fall on it. This is what is called burning a stone. When this happens, the opposing team have three choices to choose from. They might either remove the stone from play, ignore the foul or rearrange the stones in the position they think they would have ended up if it had not been touched.

Tee Line rule

The Tee Line rule is a restriction given during sweeping on who and where to sweep. The Tee Line runs through the centre of the House and is parallel to the hog lines and back lines. The Tee Line rule states that only one player is allowed to sweep when the rock is past this line. This should be any one player from the delivering team but only the skip or vice-skip from the opposing team.

Five Rock Rule

What is a draw in curling?
Brad Gushue of Canada during Day 5 of the Turin 2006 Winter Olympic Games on 15 February 2006 at the Pinerolo in Turin, Italy. Photo: Robert Laberge
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The Five Rock rule is also known as the Free Guard Zone rule. The Free Guard zone is the area between the hog line and the tee line, excluding the front half of the House. The rule dictates that stones in the Free Guard zone cannot be taken out of play until five rocks have been thrown on an end.

Scoring rules

Curling aims to score points by throwing the stones as close as possible to the Button, which is the centre of the House. For every rock closer to the Button than the opposing team's closest stone awards a point. One or both teams can fail to score in a round, but both teams cannot.

Time limit rules

Curling is a game that requires a lot of thinking and strategy, hence requires a lot of time to come up with an attacking formula. Because of this, games might take too long, which might be problematic for fans and curlers with multiple games to play. A regular game might take up to three hours. This includes a fixed thinking time of 38 minutes for traditional ten-end games and 30 minutes for eight-end games.

Conceding a game

What are the scoring rules in curling?
Canada's Marc Kennedy during their Vancouver Winter Olympic men's curling match against the US at the Vancouver Olympic Centre, on 22 February 2010. Photo: Toshifumi Kitamura
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Unlike most games, curling allows players to concede a match whenever they are way down or know their competitors overmatch them. However, most competitions give a certain amount of rounds a team can play before forfeiting, forcing them to give their best efforts before giving up.

What are the rules of curling in the Olympics?

The game's primary objective is to get rocks as close to the target as possible. Points are only awarded for stones that touch the House, and the team with the most points after ten ends emerges victorious.

What are the rules of mixed doubles curling?

Mixed doubles is similar to regular curling, only with a slight difference. Here, only two players are on each team (a man and a woman) rather than four. Also, there are only five stones at each end, with eight ends per game, making it shorter than the regular game.

What are the scoring rules of curling?

Scoring occurs when a team's rock is closest to the House than the opponent's rock. This goes on after every round of earning a point to the eighth round. The team with the most points are the winner.

Why are Olympic curling stones so expensive?
From left: Canada's Brett Gallant, USA's John Shuster and Christopher Plys, Canada's Geoff Walker and Brad Gushue at the National Aquatics in Beijing on 18 February 2022. Photo: Lillian Suwanrumpha
Source: Getty Images

What are the rules of the hammer in curling?

A hammer is earned by a team that does not score a point during an end. The team earns the hammer in the next round and throws the final stone, a significant advantage commonly known as the Last Stone Advantage (LSA). By this, they get an advantage to deliver the last rock of an end and can probably earn at least one point to win that end.

What is a draw in curling?

A draw is a shot designed to move directly without touching other rocks to the target. They are unlike Takeouts, designed to remove other rocks from the field of play.

Why are Olympic curling stones so expensive?

A certified Olympic rock costs over $600. Summing up the full set of 16 stones, they add up to over $9,600. They are made of dense, polished granite from Ailsa Craig, Scotland. The rare material and restrictions permitted by the World Curling Federation and the Olympic Committee make them that expensive.

When was curling invented?

Curling was invented in the 16th century and is one of the oldest team sports worldwide. It was first played in the Olympics in 1998 in Nagano, Japan, after being a demonstration sport at three subsequent Olympic Winter Games.

When was curling invented?
From left: Marc Kennedy, John Morris, Kevin Martin, Ben Hebert and Adam Enright of Canada after the Gold medal game at Vancouver Olympic Centre on 27 February 2010. Photo: Cameron Spencer
Source: Getty Images

After reading carefully, one will get the answer to their question, what are the rules of curling? Highlighted above will explain how the game came into existence and how it is played. As it gets popularity over time, it will soon be one of the most-watched games worldwide.

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Authors
Samuel Lisubila photo
Samuel Lisubila