I posted this a while back on the Laker Board.
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Wikipedia -- The Triangle offense, also known as the Triple-Post offense, is an offensive strategy in basketball. Its basic ideas were initially established by Hall of Fame coach Sam Barry at the University of Southern California, and his system was later refined by former Kansas State University head basketball coach and former Los Angeles Lakers consultant Tex Winter, who played for Barry in the late 1940s.
The system's most important feature is the sideline triangle created between the center, who stands at the low post; the forward, at the wing, and the guard at the corner. The team's other guard stands at the top of the key and the weak-side forward is on the weak-side high post — together forming the "two-man game".
The goal of the offense is to fill those five spots, which creates good spacing between players and allows each one to pass to four teammates. Every pass and cut has a purpose and everything is dictated by the defense.
The offense starts when the ballhandler passes to the wing and cuts to the strong-side corner. The triangle is created from a post player on the strong-side block, the strong-side corner, and the extended strong-side wing, who gains possession on the first pass. The desired initial option in the offense is to pass to the strong-side post player on the block in good scoring position. From there the player has the options of looking to score or pass to one of the perimeter players whom are exchanging from strong-side corner and wing, a dive cut down the lane, or the opposite wing flashing to the top of the key which initiates another common option known as the "pinch post".
If a pass to the block is not possible, the second option is to either to pass to the weak-side guard who flashes top of the key from the weak-side wing position or passing to the strong-side corner. If the ball is passed to the corner the options are either shoot, pass to the strong-side block, or pick and pop with the wing. If it is passed to the weak-side guard it initiates the "pinch post" option. There are two options. The first and most common is to pass to the weak-side forward who flashes to the elbow (corner of the key at the free throw line) to receive the pass. When he does the options are a rub handoff, back door cut by guard without the ball, post up of the guard on a smaller player, or face up and attack. The second option is a pick and roll with the forward. The advantage to the first option is there are so many weapons to attack the defense it opens up a lot of freedom and ability to score effectively. The advantage on the second option is that the player who has the ball and uses the screen now has the entire side of the floor to work with to go one on one. Meanwhile, on the other side, the wing sets a screen for the corner guard on the triangle split. If the hand-off is not available, the forward or the guard can pass to the corner guard coming off the screen. If the defense overplays or expects the split, both the wing and the corner guard can back cut to the basket. During all of this time the original strong-side block player is able to establish position for an easy shot while the defender is lured by all of the movement and cutting by the other players.
If the strong-side wing-to-guard pass is not possible, the third option is for the weak-side forward to flash to the strong-side elbow, take the pass, and cut to the basket on the trademark backdoor play of the offense. Meanwhile, the wing and corner guard exchange on a down screen. The forward with the ball can pass to the cutting guard or to the corner guard coming off the wing's screen. If nothing's available, he can shoot the basketball himself.
The offense also has a variety of options if there's heavy pressure from the defense. If the initial wing-pass by the guard isn't available, the triangle can be created on the other side by passing to the other guard, who then passes to the weak-side forward (who then becomes the strong-side wing). The guard, who initially had the ball, then cuts to the other corner. The center or the pressured wing can flash to the opposite post.
If the guard-to-guard pass is not available, the weak-side forward can make a similar flash cut that was mentioned earlier. That also creates many cutting opportunities. If there is heavy pressure on everybody, the center can release the pressure by cutting to the high post for a pass by the ballhandling guard. That would also create space for possible cuts.
Most critics of the triangle offense cite its high level of difficulty and longer-than-average learning process.
Proponents argue that, when learned, the triangle becomes very natural and is structured so as to make sense. The guiding philosophy behind the offense is to pursue the path of least resistance.
Head coach Phil Jackson, with help from assistant coach Tex Winter, has utilized the triangle offense to great success. The Chicago Bulls under Jackson won six NBA titles in the 1990s playing in the triangle. Jackson's Los Angeles Lakers later won three championships employing the triangle.
NBA greats Michael Jordan, Scottie Pippen, Shaquille O'Neal, and Kobe Bryant never won NBA championship titles before their teams adopted the triangle system (Shaquille O'Neal later won an NBA championship without the triangle offense in 2006 as captain of the Miami Heat). Other teams, such as the New Jersey Nets and Indiana Pacers, have adopted certain elements of the offense, but in NBA history, only teams coached by Phil Jackson have used the arsenal of the offense in its entirety. In addition to 9 championships, Jackson has won over 1000 total games during his Hall of Fame career (regular season victories and playoff victories combined) as an NBA head coach.
Winter has worked for Jackson as an assistant for all of Jackson's NBA head coaching career.
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And now for play sets.
Offensive Basketball Play #1: TRIANGLE PRINCIPLES

1
In the triangle offense 4 and 5 are the only players to play the post position. 1,2 and 3 are interchangeable at the various perimeter positions (point guard, strong-side wing, weak-side wing and corner position).
The shape of a triangle is formed on the ball side by the post player, the wing player and the corner man. The triangle can be formed on either the right or left side; it can be initiated by either a pass from the point guard to one of the wing men or by the point guard dribbling over to one of the wing positions.
Whichever player ends up with the ball in the strong-side wing position becomes the "trigger man" - what he does with the ball determines the offensive movement.
The offense begins with 4 and 5 located at the elbows and the two wing players on the lower blocks, as shown. When the point guard reaches the bottom of the mid-circle, 4 and 5 then downpick for 2 and 3 to get them open in the wing areas for a pass from 1, as shown in the diagram.

2
Another way to begin the triangle is to have 1 dribble to either wing position with the wing player then v-cutting down to the corner position and the strong-side post player moving to the high-post elbow position, as shown here.
(We'll be showing only the wing pass entry in our play option examples, but all plays can also be initiated by the point guard dribbling over).

3
Either of these two ways to begin the offense will result in the triangle being set up. In this example, where 1 has passed to 3 on the wing then cut through to the corner, the triangle is set on the right side with 3 on the wing as the trigger man, 1 in the corner and 5 in the ball-side high post area.
2 moves up to the point area for defensive protection and 4 moves out to the weak side wing area.
(All of the triangle offense options shown in the following pages can be run from either the right side or the left side - it doesn't matter which side the play begins on.)
Offensive Basketball Play #2: CIRCLE-OPTION

1
When the trigger man calls out "CIRCLE" then the corner man knows to run quickly and "circle around" to the opposite side corner. In this example, 3 is the trigger man. Upon calling out "CIRCLE", 1 runs to the opposite corner leaving 3 and 4 alone on the left side.
("Circle" can also be called out by the point guard. In this case if the point guard calls "CIRCLE" and he then passes to the wing, he will then cut through to the basket and continue out to the opposite corner area. If the point guard instead dribbles to the wing then the wing man clears out to the opposite corner area.)

This results in a 2 on 2 game. 4 then sets a screen on the baseline side of 3's defender, then rolls to the basket after setting the screen. 3 dribbles off the screen from 4 and can either look for his own shot or pass to 4 rolling to the basket.
1 and 5 look to CRASH the boards if a shot is taken. 2 stays at the point for defensive protection.
Offensive Basketball Play #3: C-OPTION

The "C" option stands for Clear. When the trigger man, 2 in this example, calls this from the triangle position then 5 and 1 immediately and quickly go to the other side of the floor. They "clear-out" to the opposite side leaving 2 to take his man one-on-one to the basket.
(Remember, we must be good actors in basketball so 5 might act like he's screening for 4, and 4 might act like he's screening for 1, who could act like he's coming off the screen from 4 - you don't want to just turn and watch 2 with the ball because the defense will then quickly figure out the play).
If a shot is taken, 1, 4 and 5 CRASH the boards while 3 stays at the point for defensive protection.
("C" can also be called out by the point guard. In this case if the point guard passes to the wing then he cuts through to the basket and continues out to the opposite corner area. If the point guard dribbles to the wing then the wing man clears out to the opposite corner area.)

2 takes his man one-on-one trying to get all the way to the basket.
If he can't beat his man then the triangle is reset, either on the same side or on the opposite side.
(Another option may be, instead of calling out "C" every time for this play would be to start the clear out play by calling out any color.)
Offensive Basketball Play #4: CORNER-OPTION

The corner option begins as always with the two post men down-screening for the wing players. 2 & 3 come off the screens out to the their respective wing areas.

1 passes to the open wing (who then becomes the "trigger" man). 5 steps up and sets a screen at the elbow for 1 who v-cuts off 5's screen looking for the pass from 2 for a layup. If 1 does not get the ball he v-cuts out to the corner area and 5 remains in the high post elbow area.
3 then replaces 1 at the point position and 4 goes out to the opposite wing area.

Now the triangle offense is established on the right side with 5 in the high-post area, 1 in the corner, and 2 who is the trigger man with the ball - what he does next with the ball will dictate the appropriate offensive movement. 3 has now moved up to the point for defensive protection and 4 has moved out to the weak side wing area.
As previously described in the "Triangle Principles" section, this triangle can also be set up by having 1 dribble to the wing - now 1 becomes the trigger man - and 2 v-cuts down to the corner with 5 going to the high-post elbow area. If 1 is having difficulty passing to the wing, he has this option to dribble to either side to begin the offensive movement.

The corner option then is where 2 passes to 1, 5 then steps up to set a screen on 2's defender, and 2 v-cuts off of 5's screen looking for the pass from 1 for a layup.

If 2 does not get the ball he goes through the lane to the weak side where 4 and 3 are coming down to set a double screen on 2's defender.
5 then steps up to set a screen on 1's defender. 1 dribbles off the screen and has the following options: a) jump shoot, b) pass to 5 rolling to the basket after setting the screen, or c) pass to 2 inside the free throw line coming off the double screen from 4 and 3.

4 and 3 must read what 1 decides to do. If 1, 2, or 5 get the shot then 4 and 3 must CRASH the boards. 2 or 1 must be sure to stay back for defensive protection.

If neither 1, 2 nor 5 get the shot then 4 sets up at the high-post area, 3 moves out to the corner and 2 becomes the wing trigger man. 1 passes to 2 to set up the offense, then goes to the point for defensive protection. Now the triangle has been established on the left side of the floor to begin the offense again. The trigger man, 2, will now control the offensive movement by what he decides to do with the ball.
1 stays at the top of the key and 5 takes the weak side wing position.
Offensive Basketball Play #5: TRIANGLE POST-OPTION

In this example 1 has passed to 3 then cut to the left corner, 4 has taken the high-post position so now the triangle is set up on the left side. 3 is the trigger man and decides to pass the ball to 4 at the high-post.

4 pivots facing the basket in a triple threat position, then has various options: a) Pass to 2 at the basket for a layup, who has received a back-screen from 5 at the right elbow area. b) Jump shot or drive to the basket.

If 2 does not get the pass he must then move out to a position out to the right of the lower block.
c) Pivot back around so your back is to the basket, then make the back-door pass to 1 for a layup who has v-cut to the baseline side. (2 must stay out to the right of the block area to keep his defender away from the basket).

If 1 does not receive the pass from 4 then 1 continues on through the lane and looks for the double screen on the weak side from 2 and 5.
4 can then either: d) Pass back out to 3 on the wing who can then pass to 1 around the free throw line for the open shot, coming off the double screen from 2 and 5. Or.....

e) Pass to 1 around the free throw line for the open shot (this may take too long and could result in a 5 second call, so the better option of d and e is probably going to be option d).
If a shot is taken all players except 3 should CRASH the boards. 3 must stay back for defensive protection.

If this doesn't produce a shot then 1 can dribble over to the right wing area, 2 can break out to the corner area, 5 goes to the high-post area, 3 takes the defensive protection area at the top of the key and 4 slides out to the weak side wing.

The triangle has now be re-established on the right side of the floor. 1 is now the trigger man - what he does with the ball will determine the offensive movement.
Offensive Basketball Play #6: REVERSE-OPTION

In this example the triangle is set up on the right side. 2, the trigger man, reverses the ball to 3 who quickly passes to 4 on the weak side wing.
As 3 is beginning to pass to 4, 5 steps up to set a screen on 2's defender. 2 v-cuts and flashes across the lane looking for the pass from 4 and the shot.
If 2 shoots everyone except 3 CRASHES the boards. 3 stays back for defensive protection.

If 2 doesn't get the ball he continues through the lane to the left side corner.
After screening for 2, 5 then sets a screen on 1's defender. 1 v-cuts across the lane looking for the pass from 4 and the shot.
If 1 shoots, everyone except 3 CRASHES the boards.

If 1 is not open, then 4's final option is to pass to 5 who, after screening for 1, then rolls to the basket looking for the pass.
If 4 does pass to 1 and he is not open for a shot, then 1 has the option to pass to 5 who is rolling to the basket. If 5 does not get the pass he then stays inside looking to get good rebounding position.
http://www.basketball-drills-and-plays. ... fense.html**
Make sense?