Question: When does a shot earn three points?
About the article "Basketball", section "Rules and regulations".

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A three-point field goal (also known as a three-pointer, three, or trey) is a field goal in a basketball game made from beyond the three-point line, a designated arc surrounding the basket.
A successful attempt is worth three points, in contrast to the two points awarded for shots made inside the three-point line.
In 3x3, a formalized version of half-court basketball, shots from outside the arc are worth 2 points, with all other successful shots worth 1 point.
A three-point field goal is distinguished from a "three-point play" or an "and-1", which occurs when a shooter successfully scores a two-point basket while being fouled, and then makes the ensuing free throw.
If such a foul occurs on a successful three-point shot, the resulting free throw gives the player a chance to earn a four-point play.
If a player gets fouled while shooting a three-point shot but does not score they get three free throws.
In 3x3, a defensive foul on an unsuccessful shot from behind the arc results in two free throws.
Three-point field goal percentage is a measure of three-point shooting accuracy calculated by the ratio of three-point field goals made to three-point field goals attempted. 
This title, when compared to other titles, is unorthodox due to the nature of how a team earns a title shot.
A team becomes eligible to challenge for the Campeonatos de Parejas as soon as they earn three points.
Teams rack up points by winning tag team matches.
As soon as they get the three points, they can challenge the reigning Campeones for the title.
However, if they lose a match, the team loses all of their points and must start again.
Essentially, when a duo wins three tag team matches in a row, they are eligible to have a title shot.
Per Lucha Libre tradition, title defenses are Campeones vs. Retadores in Two out of Three Falls match. 
Kontiola made his international debut for Finland at the 2004 World Junior Championships in Helsinki scoring 2 points in 7 games to help earn a Bronze medal.
Kontiola was named to the men's 2007 IIHF World Championship team in Russia to make his senior debut.
He finished among the Finnish leaders with 7 points in 9 games as Finland lost in the Final to Canada to earn Silver.
Petri returned to the Finnish team three year later when he was selected in the 2010 IIHF World Championship team at Germany.
In seven games he scored 3 goals before suffering elimination on 20 May 2010, when he missed a penalty-shot in the quarterfinal shoot-out against the Czech Republic. 
Bumper Stars is described as a hybrid of pool and arcade games.
While the aiming process is similar to billiards, the resulting character action mimics pinball.
The player clicks the Star, drags the mouse to aim, and then releases the Star.
The object of the game is for a player’s "Star" (character) to consume as much available food product as possible within three shots, while hitting the "bumpers"(large, round, stationary items on the screen) to earn additional points.
Special bumpers add a multiplier to the player’s score when hit.
Players looking to maximize scores will try to hit as many special bumpers in a single shot as possible.
Bonus points are earned when all special bumpers disappear and when the player clears a level in a single or two shots.
Special bumpers add a multiplier to the player’s score when hit.
Players attempting to maximize scores will try to hit as many special bumpers in a single shot as possible.
Bonus points are earned when all special bumpers disappear and when the player clears a level in a single or two shots.
Players will earn credits in solo games each time they play (once a day for starting the game) and for achieving a new high score.
In challenge games the winner receives credits based on the number of challenge participants. 
Common additional rules include:  Regional variations may include: A field goal counting for 2 points and the 3-point shot (which is only two in street basketball) counting for 3 points, Going back to zero at 11, and/or having to win by a certain number of points  Allowing the starting shot to score points for the shooter if it goes in  Inverting scoring values such that a field goal is worth 1 and a free throw worth 2  Forcing a player to take a fourth free throw and intentionally miss if he has made all 3 free throws, instead of just returning the ball to him  A player can attempt a 3-pointer instead of attempting three free throws   Variations on what a score is reset to if 21 is exceeded (7, 10, 11, 13, and 15 are common)  "Tips" or "Taps" : With these rules, if a player jumps up, gets a rebound in the air and makes a shot before touching the ground, the player who initially shot the ball is said to have been "tipped."
or "tapped", and their score is reset to zero (or sometimes to 11 if their score is 12 or greater).
The tipper then gets awarded the ball but does not earn points for tapping the free-throw shooter out.
In some games, if a player gets tipped 3 times, or if their score is already zero, they are out of the game.
In another variation, if a player is tapped using only one hand, they are immediately eliminated.
If a player who has 11 points misses the next shot, regardless of whether it is a free throw, then that player's points revert to 0.
This is referred to as "poison points".
Players with fewer than 11 points at the end of a game keep their points into the next game (a sort of handicapping system for when there is a wide variation in skill between the players).
After exactly 21 points are reached, the player must make a final 3 pointer.
If the game was started without a traditional jump ball, then the person who didn't receive the ball first receives 1 chance to even the game  If the player is at 20 in twenty one the player must hit the front of the rim only, if the player sinks the ball, hits the backboard or hits the inside rim the player goes back to 11.
"Breaking the ice" : There is no penalty for going over 21, but if a player scores 21 or more with a two or three point shot, the player must first hit a free throw successfully.
If he does so, he then shoots a 3-pointer to win the game.
If he misses the free throw, he does not lose any points, and the game continues.
If he makes the free throw but misses the 3-pointer, his score is reset to a lower value (e.g.
13, as above) and the game continues.