Question: How often does the curling stone turn?
About the article "Curling", section "Delivery".

Candidate passages:
  Raise : A shot in which the delivered stone bumps another stone forward  Raise takeout : A shot in which the delivered stone bumps a second stone which in turn knocks a third stone out of play.
Also called a runback  Reading the ice : When a curler considers how the condition of a sheet of ice will influence the path of a thrown stone, similar to how a golfer reads the undulations and texture of a green before determining where and how hard to hit a putt  Reverse handle : When a stone is thrown with a particular turn, but it eventually stops and begins to rotate in the opposite direction; usually the result of a pick or poor ice conditions.
Sometimes it may even reverse twice in one shot, creating unpredictable shots that follow an S-shaped path.
Right off!
: A call given by the skip to tell the sweepers to neither sweep nor clean the rock; as compared to off!, which tells the sweepers to stop sweeping but not necessarily to stop cleaning  Rings : The house  Rink   A curling team.
Often used with a location ("the Manitoba rink") or the name of the skip ("the Smith rink").
A building housing the ice sheets ("the curling rink")  Sometimes used as a synonym for sheet  Roaring Game, The : Slang for the game of curling, it is the sound a stone makes while sliding along the ice  Rock : The device thrown by curlers during the game.
It is made of granite and has a standard weight of 19.6 kg (44 lb).
Also called a stone  Roll : Any movement of a stone after striking another  Rotation : Description of a spinning rock  Rub : When a moving stone barely touches another stationary stone; less contact than a chip  Run : A section of the curling sheet that is dipped or troughed that can prevent a stone to curl or draw down its normal path of travel  Runback: See raise takeout  Running surface : The part of the rock which comes in contact with the ice.
It is about 7 mm wide (0.25 inches)  Runthrough: See raise takeout  
Curling is a sport in which players slide stones on a sheet of ice towards a target area which is segmented into four concentric rings.
It is related to bowls, boules and shuffleboard.
Two teams, each of four players, take turns sliding heavy, polished granite stones, also called "rocks", across the ice "curling sheet" towards the "house", a circular target marked on the ice.
Each team has eight stones.
The purpose is to accumulate the highest score for a "game"; points are scored for the stones resting closest to the centre of the house at the conclusion of each "end", which is completed when both teams have thrown all of their stones.
A game may consist of ten or eight ends.
The curler can induce a curved path by causing the stone to slowly turn as it slides, and the path of the rock may be further influenced by two sweepers with brooms who accompany it as it slides down the sheet, using the brooms to alter the state of the ice in front of the stone.
A great deal of strategy and teamwork go into choosing the ideal path and placement of a stone for each situation, and the skills of the curlers determine how close to the desired result the stone will achieve.
This gives curling its nickname of "chess on ice". 
  Across the face : On a hit, refers to the shooter hitting the object stone on the opposite side from where the broom was placed.
Since this imparts less speed to the object stone and takes less speed away from the shooter, it is a very efficient way of making a tick.
This is seldom used for normal hits since it is harder to execute, unless necessary because a guard prevents using the other turn  Anti-freeze : A very rare and extremely difficult shot in which a stone is delivered so that it will come to rest behind another stone already in play, created the same effect as if one stone had been frozen to the other  Anti-slider : Synonymous with gripper  Arena ice : Temporary curling ice made quickly on a hockey rink or the like, most often used by curling clubs without dedicated curling facilities; usually of lower quality than that of a dedicated facility, but when created for televised events or events with large numbers of spectators, the ice quality can rival or even exceed that of a dedicated facility  Around the horn : A double or triple where the shooter ends up coming back up the rings  
Curling has been adapted for wheelchair users and people otherwise unable to throw the stone from the hack.
These curlers may use a device known as a "curler's cue" or "delivery stick".
The cue holds on to the handle of the stone and is then pushed along by the curler.
At the end of delivery, the curler pulls back on the cue, which releases it from the stone.
The Canadian Curling Association "Rules of Curling" allows the use of a delivery stick in club play but does not permit it in championships. 
André Ferland (born in Drummondville, Quebec) is a Canadian curling coach.
He is an inductee in the Canadian Curling Hall of Fame in the builder category, and is often known in curling circles as "Monsieur Curling."