How can you estimate the cut angle for a shot?

On Vol. I of the Video Encyclopedia of Pool Shots, we show how to use your hand to recognize 1/4-ball, 1/2-ball, and 3/4-ball hits. We also show how to calibrate your hand so you can judge these shots (and the corresponding cut angles) fairly accurately. Knowing these three angles well can help you estimate the angle required for any shot. “HAPS – Part I: Fractional-Ball Aiming” (BD, November, 2014) also has diagrams and illustrations that help you visualize and practice standard ball-hit fractions. The cut angles for various ball-hit fractions can be found at the end of TP A.23.

A simple way to visualize and estimate cut angles is to imagine an analog clock face (or use one on your wrist). If noon (12) is straight (0°), 11 and 1 are at 30° (1/2-ball hit), 10 and 2 are at 60° (about an 1/8-ball hit), and each minute is 6°. For example, halfway between 12 and 1 ( at 2 1/2 minutes) is 15° (about a 3/4-ball hit), and halfway between 1 and 2 is 45° (about a 1/4-ball hit).

Other methods for visualizing cut angles can be found on the fractional-ball aiming resource page. Here’s a diagram from Patrick Johnson illustrating the where the ball-hit fractions are relative to clock hours:

Below is a template posted by “oldschool1478” (in AZB post) that can be useful to estimate cut angles and required aim points when practicing. Here’s a printable PDF version. If the center of the cutout is placed over the necessary ghost-ball position with the arrow pointed back to the cue ball, sighting to the pocket gives the necessary cut angle, clock position, ghost-ball overlap, and aim point (center of small circle) relative to the object ball. For example, the required aim for a 30° cut (assuming no throw) is through the edge of the object ball. The dashed ghost-balls in the small illustrations are useful to get a sense for the amount of ball overlap required on a particular shot.

AimPro Billiards has a similar easy-to-use plastic template and system called AimRight that can be used to estimate cut angles, ball-hit fractions, and CB directions. CueAndMe also has useful templates and a system for estimating cut angles by visualizing rectangles of different proportions.

from Patrick Johson (in AZB post):

These approaches work when breaking for a straight pool game too. For 9 ball, you want to aim straight into the center of the 1 ball. It can also help to place the cue ball in a position such that you are hitting the 1 ball on a slight angle. Unlike an 8-ball break, you do not want to make that angle too much. This video demonstrates how to deal with an opponent's ball that is directly blocking the pocket. In order to put one of your own balls into the pocket, it may be necessary to shoot your object ball at the one blocking the pocket, making them both go in. Pocket your ball when it is blocked by opponent's ball. 8 ball pool problem MUST FIX I am a god at 8 ball and I play in game pigeon with my friends, but the last match I played I got the last ball in that was my colour (solid) and on the same go got the 8 ball in somehow by all this bouncing the 8 ball clearly got in the hole after my last solid ball but since it was counted on the same go I LOST! How to Play 8-Ball Tool on iMessage. Jerry Cook; Updated on 2020-11-11 to iPhone Data; A new feature of iOS 10 is the games in iMessage. GamePigeon, one of the hottest iMessage app, allows user to play 8 ball pool on iMessage as well as other games with their friends. 8-ball is a game played with a clue 15 'object balls'. This first break is the most simple because it doesn't require you to apply any spin to the ball.

1-to-1 slope = 45-degree cut = 1/4 ball fraction

1-to-2 slope = ~30° cut = ~1/2 ball fraction
[Actual: 1.15-to-2 slope = 30° cut]

1-to-4 slope = ~15-degree cut = ~3/4 ball fraction
[Actual: 1.07-to-4 slope = 15° cut]

from unknown source:

from Bob Jewett (in AZB post):

If you place your tip at the center of the ghost ball and pivot around it from the line to the pocket to the line of the shot (over the cue ball), the number of inches the bumper on the cue travels is the number of degrees of the cut angle.

To be precise, you should measure the distance around the arc of the travel of the bumper, but for cut angles up to 30 degrees the straight-line distance between the two positions of the bumper is pretty close.

The tip of the cue is at the center of the ghost ball. The distance X is the base of an isosceles triangle. If X is measured in quarter inches, it gives the angle, pretty nearly.

Here are x (in) x (in/4) actual angle and error:
1 4 3.82 0.18
2 8 7.65 0.35
3 12 11.48 0.52
4 16 15.32 0.68
5 20 19.19 0.81
6 24 23.07 0.93
7 28 26.99 1.01
8 32 30.93 1.07
9 36 34.92 1.08
10 40 38.94 1.06
11 44 43.02 0.98
12 48 47.16 0.84
13 52 51.36 0.64
14 56 55.64 0.36
15 60 60.00 0.00
16 64 64.46 -0.46
17 68 69.04 -1.04
18 72 73.74 -1.74
19 76 78.59 -2.59

from Dead Crab:

I have a way of estimating cut angles to within a degree. It works for me. Estimating to within 5° would be a cinch.
1. Place a small piece of tape (blue painter’s tape is good) on your cue shaft 15″ from the tip
2. Place tip of cue on the CB-OB line so that the 15″ mark on the cue is over the top of the CB (obviously, not touching it).
3. Leaving the tip stationary, swing the butt of the cue so that the alignment of the cue long axis is parallel to the line of the OB-intended pocket.
4. Estimate the distance (in inches) from the tape mark on the cue to the CB-OB line (i.e. drop a perpendicular to the CB-OB line from the mark on the cue. Multiply this distance by 4. That is your cut angle, in °.
With a little practice, the difference between 3.5″ and 4″ is obvious, and clearly distinguishes a 14 degree from a 16 degree cut angle. For longer shots, you can use the cue joint rather than the 15″ mark, and multiply by 2 instead of 4 to get the cut angle.

From a practical viewpoint, it is important to note that the tip of the cue need not be at the GB center. Since the GB center may be 7′ away, a more practical approach is to place the 15″ mark on your cue over the CB, with the tip on the estimated CB-GB line (as discussed, for long shots the CB-OB line is often adequate for longer shots). Then pivot the cue around the tip until it lies parallel to the OB-pocket line. Estimate the base of the triangle in inches, multiply by 4, and you are done. For really close shots the method can be used by extending the estimated CB-OB line “behind” the CB. This saves a lot of reaching. For intermediate and long shots, the 30″ point of the cue is often easiest to use (just 1″ above joint), and then the multiplier is 2 instead of 4.

If you know the cut angle, you know where to aim from the CB center. 1mm per degree up to 30° and above that, 0.8mm/degree off ball edge over 30° covers it pretty well. Ball landmarks come in handy. A visible gap becomes apparent between cloth and ball at about 10mm off center (napped), 7-8 mm worsted. A 20 degree cut can be aimed at 7:30 or 4:30 on the clock face, a 25 degree shot at 8:00 or 4:00. A 23 degree cut is 2mm shy of a 25 and 3mm more than a 20.

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Game rules 8-Ball Pool

Aim of the game

Pot all of the balls of your color (solids or stripes) and finally pot the black 8 ball in order to win the game.

Gameplay

At the start of the game, the break will determine who goes first. In order to decide this, both players hit the white ball against the cushion at the right-hand side of the screen (the bottom cushion) and aim to finish with the white ball as close to the cushion at the left-hand side (the top cushion) as possible. The player whose ball stops closest to the top cushion wins the break and starts the game.

In duels with more than one round, the player who lost the previous round gets to break in the new round.

The white cue ball can be placed anywhere in the left third of the table for the break.

If at least one ball is potted during the break, the player continues. Each player continues playing as long as he continues potting balls of his colour.

Pay particular attention to the information in the message box. You receive information in this box regarding the current standings.

How To Hit A Ball In Game Pigeon Pool

If at least one ball is potted during the break, the player continues. Each player continues playing as long as he continues potting balls of his color.

Controls

1. Aiming

At all times you can see two direction indicators. One of these shows which direction the ball which you hit will go in. The other indicator shows roughly which direction the white ball will go in after colliding with the other ball.

The 'ghost ball' is there to help you aim. This shows where the white ball will connect. In order to place the ghost ball, there are two options:

  1. Move the cue by clicking and holding the left mouse button down until the ghost ball is in the desired position.
  2. Click on the place where you would like to place the ghost ball.
  3. Move the 'ghost ball' by holding down the mouse button and moving it to the desired position.

Of course you can combine all of the techniques. Firstly, click roughly near the ball which you would like to hit and then move the queue to the correct position.

2. Fine adjustment

Use the left and right arrow keys on your keyboard in order to adjust the direction of the shot more finely.

3. Shot power

You can set the power as you wish. Click the shot power box in the desired position. Alternatively you can use the arrow keys on your keyboard to increase or decrease the power.

The shot power will be reset to a medium pace after each shot.

Tip: The shot power does not increase at a constant rate. This means that when setting a low shot power, smaller increments are possible.

4. Spin

Use spin in order to influence the direction of the white ball after collision. In order to add spin, move the red point by dragging it to the desired position or simply by clicking directly on the desired position.

The results of the spin depend on several factors, such as the shot power and the distance between the white ball and the ball which is hit. In general, the following applies:

  • The further towards the edge that you hit the white ball, the larger the effect of the spin.
  • If the white ball is hit on the top (top spin), it continues rolling forward after the collision. The distance in which the ball will rebound off the ball it hits is reduced.
  • If you hit the white ball on the bottom (back spin), the distance in which the ball will rebound is greater. The white ball stops quicker, stops or may even roll backwards.
  • The further the ball which you wish to hit is away, the less the effect of the spin.

A comprehensive explanation of the effects of spin is not possible here. Experiment in different situations with different amounts of spin in order to get a feeling for how much spin is required in each situation.

Spin, however, does not affect the direction of the ball which is hit.

5. Shooting

Once you are happy with your settings, take your shot. To do this, press either the 'space bar' or the 'Enter' key on your keyboard or click on the 'Shoot' button.

Ball in hand

Normally you take your shot with the balls as they are on the table when it's your turn. If your opponent has committed a foul, for example by potting the white ball, however, then you receive ball in hand.

Ball in hand means that the white ball can be placed anywhere on the table. There are no restrictions, as with 'bar pool' (such as playing the white ball over the center line), except when a foul is committed on the break.

In order to place the white ball, drag the ball to the correct position by clicking and holding the left mouse button. You can also change the position once you have let go of the ball.

Shot time (and game time)

For each shot you have a limited amount of time. The clock begins counting down as soon as it's your turn. If you do not take a shot before the time runs out, your shot will be counted as a foul. Your opponent will receive ball in hand.

If you exceed the allotted time twice in a row or more than three times in total, you lose the game!

Current Scores

Click on this button in the grey bar at the top of the screen in order to see the current game standings.

Controls and Rules

Click on this button in the grey bar at the top of the screen in order to get an overview of the instructions and the most important rules.

Chat

You can send your opponent a message with the chat button.

There are three options when sending a message:

  • Smilies or Emoticons (A picture says a thousand words)
  • Standard answers (Your opponent receives this message in their own language. This is particularly useful if you speak a different language to that of your opponent).
  • Free text. Simply enter a message and send this by pressing the 'Enter' key on your keyboard.

Rules

GameDuell's 8-ball billiards is predominantly based on the official 8-ball rules of the DBU (German Billiards Union).

How To Hit A Ball In Game Pigeon Pool

The game is therefore not played according to pub rules but rather in accordance with the professional rules.

The following terms will be used for the following:

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  • Stripes = the striped balls 9, 10, 11, 12, 13, 14 and 15
  • Solids = the colored balls 1, 2, 3, 4, 5, 6 and 7
  • Color = Solid or Stripe
  • White = the white ball which must be struck using the cue
  • Pocket = the six holes in the corners and in the middle of the long cushions

1. Choice of ball color

After breaking, the table is always 'open', i.e. it remains undecided who is 'solids' and who is 'stripes'. The decision is made after the first ball is potted.

2. Conditions for valid shots and fouls

At least one of the following requirements must be fulfilled for a valid shot:

  • You pot a ball of your color (solid or stripe) and the white remains on the table (A foul occurs if the white is potted > the opponent receives ball in hand)
  • A ball of your color must be hit first (A foul occurs if an opponent's ball is hit first > the opponent receives ball in hand)
  • If no ball is potted, the white or another cue ball must hit one of the cushions after the collision (A foul occurs if no balls hit one of the cushions > the opponent receives ball in hand)

3. Play the black 8 ball

  • If the black is potted on the break, it is placed back on the table.
  • As long as the table is 'open', i.e. the color has not yet been decided, the black ball can be hit first, e.g. in order to pot another ball.
  • Once it has been decided who is solids and who is stripes, the 8 ball cannot be the first ball played. If this happens, however, this is a foul and the opponent receives ball in hand.
  • If the 8 ball is mistakenly potted before the conditions for this have been fulfilled, the game is lost.
  • The 8 ball can only be played and potted once all balls of your color have been potted. It is also not possible to pot the last ball of your color and the black ball in the same shot. This also results in the game being lost.
  • The 8 ball is the only ball which must be 'declared'. This means that the pocket in which the 8 ball should be pocketed must be clicked before the shot. If the black ball is potted into another pocket, the game is lost.

4. Ball in hand

  • If the white is potted on the break, the opponent gets ball in hand (in the left third of the table). A ball which is not in the top third of the table must be played first.
  • For all other fouls, ball in hand means that the white ball can be placed anywhere on the whole table.

Summary of the rules

Here are the most important differentiations from the standard rules for 'bar pool':

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  • The table is 'open' even if a ball is potted on the break. Who is solids and who is stripes is only decided once the first ball is purposefully potted.
  • If no ball is potted, the white ball or another ball must hit a cushion after the collision.
  • Ball in hand means a free choice of position on the whole table apart from when the foul was committed on the break.
  • The black 8 ball can be potted anywhere, however, it must be declared beforehand.
  • Potting one of your opponent's balls is not a foul as long as a permitted shot was played (playing your own ball first).