How to Play Curling? Guide and Rules for the Ice Sport

When you think of curling, the image that often comes to mind is that of a curious sport, almost hypnotic and often underestimated, where athletes armed with brushes slide on the ice guiding heavy granite stones.
But behind this appearance lies a discipline of extraordinary precision, deep strategy and growing popularity, especially in its most dynamic and spectacular variant: mixed doubles.

Curling, “chess on ice”

Nicknamed “chess on ice,” curling is a team sport played on a surface frozen specially prepared, call SheetThe aim is to slide smooth granite stones, called stone, as close as possible to the center of a target area circular, called property (house in English).

Curling is a game of strategy and skill

What makes curling so exciting is its deeply strategic natureEach throw is the result of a thoughtful decision, taking into account the position of your own and your opponent's stones, the ice conditions, and the phase of the game.
Unlike the traditional four-player version, mixed doubles, with its specific rules, makes the game even faster and more unpredictable. The precision in throwing, the ability to impart to the stone the right rotation (curl) and the force with which it is pushed are fundamental skills, but it is the strategy that makes the difference between a good team and a winning team.

For this reason, the nickname “chess on ice” is particularly fitting: every move must be carefully planned, anticipating the opponent's possible reactions.

The history of Curling in brief

The origins of curling are ancient and take us back to 16th-century Scotland. The first written evidence dates back to the 1541, but the most tangible evidence is a curling stone, found after draining a pond in Dunblane, which it bears the date 1511 engraved on it. Some paintings by the Flemish painter Pieter Bruegel the Elder, dated 1565, also depict scenes that closely resemble curling, testifying to the strong commercial and cultural ties between Scotland and the Netherlands at the time.

Initially practiced outdoors on frozen lakes and ponds, curling has evolved over the centuries. first club official, the Kilsyth Curling Club, was founded in Scotland in 1716With Scottish emigration, the sport spread throughout the world, particularly to Canada.
The founding of the Royal Caledonian Curling Club in 1838 It was a crucial step in the standardization of the rules. Curling made its appearance at the Winter Olympic Games as official discipline starting from 1998 Nagano OlympicsMixed doubles, on the other hand, is a more recent innovation, introduced into the Olympic programme. starting from the 2018 PyeongChang Games, immediately winning over the public with its fast pace and spectacular nature.

The playing field: the “sheet”

The curling rink, or sheet, is a rectangular surface of ice meticulously prepared to be perfectly flat and level. Its dimensions are internationally standardized, with a length ranging between 45 and 46 meters and a width of approximately 4,4 meters.

Ice size and preparation

Making ice is an art that requires great experience. The surface is not smooth like that of hockey or figure skating, but it is made slightly rough through a process called pebbling.

Before each game, the icemaker sprays the surface with very fine water droplets, which, as they freeze, form small bumps. This layer of pebbles reduces friction This allows the stone to glide more smoothly and curve more predictably. The ice temperature is kept constantly at around -5°C to ensure optimal playing conditions.

What are the home, button, and main lines?

The scoring areas and lines that regulate the game are drawn on both ends of the sheet.

The “house” and the “button”

The house is the target at which the stones are thrown.

It is made up of a series of colored concentric rings.

• The outermost ring, usually blue in color, has a diameter of 3,7 metres (12 ft);
• the middle, white ring has a diameter of 2,4 metres (8 ft);
• The innermost, red ring has a diameter of 1,2 metres (4 feet).

At the exact center of the house is the button, a small circle that represents the most valuable point on the pitch.

The “hog lines”, “tee lines” and “back lines”

Several transversal lines mark the field.

The tee line It is the line that crosses horizontally the center of the house, passing through the button.
The hog line It is a fundamental line located 10 meters from the starting stirrups: players must release the stone before it completely passes the nearest hog line.

For a shot to be valid, the stone must then completely pass the hog line further away and stop before crossing the back line, the line at the back of the house.

The “hacks”

At both ends of the field, behind the house, hacks are found, rubber stirrups stuck in the ice. The players brace one foot against the hack to give yourself a push necessary at the moment of launch, generating the force that will allow the stone to travel the entire length of the field.

The curler's equipment

Curling equipment is specific and designed to optimize performance on the ice, and is the same for both traditional curling and mixed doubles.

The stone: the heart of the game

The stone is the iconic element of curling. It is a granite disc weighing between 17 and 20 kilograms, equipped with a handle on the top.

Features and materials

Not just any granite can be used to make stone. The material must be extremely dense, durable, and non-porous to prevent water from penetrating and freezing, causing cracks.

The finest granites for curling come from only two places in the world: Ailsa Craig Island in Scotland and Trefor quarry in Wales. This is a very special granite with very few impurities due to the very small amount of aluminum present.

The lower part of the stone it's not flat, but concave, and the only surface in contact with the ice is a thin ring called the running band or crown. The handles are colored, usually red and yellow, to distinguish the two teams' stones.

The importance of rotation (curl)

Upon release, the player imprints the stone a slight rotation, clockwise or counterclockwise. This movement, called curl, is what causes the stone's trajectory to curve rather than straight.

The physics behind this phenomenon is complex, this is because objects normally curve in the opposite direction to the rotation one, instead the curling stones they curve in the direction of rotation.
The reason for this difference has been the subject of numerous studies and analyses by scientists and physicists around the world and to date has only been partially explained.

Controlling the curl is one of the most difficult and crucial skills in the game.

The broom: much more than just a tool

The broom (bromine (or brush) is another indispensable tool, used not to clean the ice, but to actively influence the trajectory of the stone.

How the sweep works

The action of vigorously sweeping ice in front of a moving stone (sweeping) generates heat through frictionThis heat temporarily melts the ice in the pebble, creating a very thin layer of water which acts as a lubricant.

The main effect is twofold: the stone travels a greater distance and its trajectory curves differently. The team, and especially the player not throwing, decides when and how hard to sweep to guide the stone to the desired spot with the greatest possible precision.

Shoes: slip and stick

Even the footwear is highly specialized. A curling player WEAR IT shoes with different soles.

A shoe, called slider, has an extremely smooth sole (usually made of Teflon) that allows it to slide on the ice during the launch phase. The other shoe, called seize, has a soft rubber sole that ensures maximum grip to give you a push from the hack and to move safely on the ice.

The rules of mixed doubles in detail

Mixed doubles introduces several innovations compared to traditional curling, designed to make the game faster and more tactically complex.

The match: 8 ends and 5 stones each

A mixed doubles match it is divided into 8 ends, unlike the 10 of the traditional discipline. In each end, each team throws 5 stonesA structure that reduces the total number of throws and shortens the length of the game, which has a thinking time of 22 minutes per team.

The team and roles

The team is composed of two players, a man and a woman. Roles are flexible. In each end, one player throws the team's first and last stones (the 1st and 5th), while their teammate throws the three middle stones (the 2nd, 3rd, and 4th). The two players can swap this order between ends. The player not throwing acts as the skip from the house, indicating the strategy, and can then move to sweep.

The big news: the positioned stones

The most distinctive feature of mixed doubles is the presence of two pre-positioned stones at the beginning of each end, before the first throw is even made. One stone belongs to each team.

Their position is fixed and depends on which team has the right to choose (usually the one that lost the previous end).

• A stone is placed on the center line, halfway between the hog line and the top of the house.
• The other stone is placed as a guard, still on the center line, but inside the house, just behind the tee line.

Fixed stones cannot be removed from play until the fourth throw of the end. Their presence immediately creates a complex tactical situation, eliminating the initial planning phases and forcing teams to immediately get into the thick of the action, both offensively and defensively.

The “Power Play”: a strategic move

Another rule unique to mixed doubles is the Power Play. Each team can use it only once. per game, in an end where he doesn't have the hammer.

When a team calls a Power Play, the two pre-positioned stones, instead of being placed on the center line, are moved laterally.
One is placed to guard the edge of the house, and the other is placed on the tee at the corner of the house. This move completely opens up the game, creating different shot angles and increasing the chances of scoring more points, but also the risks.

The score in mixed doubles

The scoring system is the same as traditional curling: at the end of each end, The team with the stone closest to the button wins the end and marks a point for each of its stones that is closer to the center than the opponent's best-placed stone.
With 5 stones thrown and one already placed, the theoretical maximum score in a single end is 6 points.

The hammer

As in traditional curling, the hammer (that is, being able to play the last stone of the end) It is a crucial advantageIt is awarded to the team that didn't score in the previous end. If an end ends with no points (blank end), the hammer passes to the other team, unlike in the traditional game where it remains with the same team. This rule was created to discourage teams from deliberately seeking a blank end, encouraging a consistently proactive play.

Strategy and tactics in mixed doubles

The specific rules of mixed doubles require different strategies than the four-player version.

Exploit the placed stones

The presence of pre-positioned stones is the cornerstone of the tactic. The attacking team will try to use their pre-positioned stone as a base to accumulate more, protecting it with guards. The defending team will try to neutralize the opposing stone, perhaps with a freeze (a shot that perfectly lands on an opposing stone without moving it) or by trying to promote their guard toward the center.

When to use Power Play

The decision to use the Power Play is one of the key moments of the match. It is usually called when a team is at a disadvantage and he needs a bold move to try to score more points and turn the score around. Using it correctly at the right time can change the outcome of an entire match.

Communication in couples

With just two players, communication and understanding must be perfect. Both players must be well-rounded, skilled with both precision and power throws, and capable of reading the ice and strategy at all times. Mutual trust and the ability to make quick decisions are even more important than in a four-man game.

Mixed doubles and Italy: a success story

Mixed doubles holds a special place in the hearts of Italian athletes. Stefania Constantini and Amos Mosaner's incredible run at the 2022 Beijing Olympics, culminating in a historic and undefeated gold medal, has put the discipline in the spotlight and created enormous anticipation for the next Winter Games.