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Basics
setting
Height on cue ball : Center
Spin : Maximum
Cue stick position : Parallel to the floor
This system is considered to be
the universal method for carom billiard.
It’s a common fact that in a game of Carom Billiard more than
1/3 of the points will be made with the help of this technique.
The shots shown below are just a few examples of the points
that can be accomplish with this method.
Although the formula is quite simple to memorize, the position
markers are much harder to remember, the values carried over
on the table being different for the 3 parameters (A, S, F).
To remember : Aim
= Start - Finish
If you have difficulties remembering all the diamond system
parameters, for now I suggest you use this method for shots
where the Finish point is between 0 and 40 and the start point
between 35 and 60. When you feel comfortable with these parameters,
go on with the entire set of numbers.
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Efficiency
Limits
This method is
efficient for shots played “Long rail- Short rail” when the
Start value is higher than the finish value.
It’s not possible to apply this method when the player’s ball
is below the 20 marker (2nd diamond on the long rail). Be
patient… there is another method for shots below the 20 marker.
In the diagram below, Start is at 30 and finish is at 50,
which means it’s impossible to accomplish this shot with this
method. At best, one could reach the finish point 30 while
using the aiming point 0.
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Step
1 : Finding the Finish Point
You must keep
in mind the finish lines as they are described in the table
below.
The markers are located on the rail in front of the corresponding
diamond. Note: between the 40 and 90 marker on the long rail,
each set of 10 corresponds to ½ a diamond.
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| Value |
Marker
on the long rail |
Finish |
| 0 |
Diamond
0 (at the corner) |
Front
to the 6th diamond on the long rail |
| 10 |
Front
to the 1st diamond |
Front
to the 7th diamond on the long rail. |
| 20 |
Front
to the 2th diamond |
Diamond
8 (at the corner) |
| 30 |
Front
to the 3th diamond |
5cm
right of the 1st diamond on the short rail |
| 40 |
Front
to the 4th diamond |
Between
1st and 2th diamond on the short rail |
| 50 |
Between
4th and 5th diamond |
Front
to the short rail's central diamond |
| 60 |
Front
to the 5th diamond |
Between
2th and 3th diamond on the short rail |
| 70 |
Between
5th and 6th diamond |
5cm
right of the 3th diamond on the short rail |
| 80 |
Front
to the 6th diamond |
Front
to the 3th diamond on the short rail |
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In
this diagram, the finish value is 20. It must come to the
attention that each point located on this line is the equivalent
of a 20 finish point. There is no difference in calculation
between the diagram above and the one below.
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| LONG
RAIL |
| Value |
Located
on long rail |
| 20 |
2th
diamond |
| 25 |
3th
diamond |
| 30 |
4th
diamond |
| 35 |
5th
diamond |
| 40 |
6th
diamond |
| 45 |
7th
diamond |
| SHORT
RAIL |
| Value |
Located
on short rail |
| 50 |
1st
diamond |
| 60 |
2th
diamond |
| 70 |
3th
diamond |
| 80 |
Between
3th and 4th diamond |
| 90 |
4th
diamond |
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In
this diagram the start value is 50.
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Step
3 : Visualize the cue ball position numbers
It’s now time to apply the magic formula: Aim
= Start - Finish.
Aim = 50 – 20
Aim = 30
The point of aim 30 is given according to the table below.
Note : between the 50 and 90 marker on the long rail, each
set of 10 corresponds to ½ a diamond.
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| Value |
Located
on long rail |
| 0 |
diamond
0 (at the corner of the table) |
| 10 |
1st
diamond |
| 20 |
2th
diamond |
| 30 |
3th
diamond |
| 40 |
4th
diamond |
| 50 |
5th
diamond |
| 60 |
Between
5th and 6th diamond |
| 70 |
6th
diamond |
| 80 |
Between
6th and 7th diamond |
| 90 |
7th
diamond |
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Note
: If the starting point is on the short rail (equal or higher
than 50), aim must be done through the rail (aim at the diamond).
If it starts on the long rail (lower than 50), aim must be
in front of the rail (facing the diamond). In both cases below,
the aiming point value is 20.
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Ball
No 1 is not along the rail
If ball number 1 is not along the rail,
pivot your cue while using your ball’s axis as pivot point
until you reach the right application of the formula : Aim=
Start - Finish.
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Extend
this method to the "Natural Points"
This system can be applied to those
points called "natural". In order to find the point of aim
(or the point of impact on the first rail), one must use the
pivot method to find the right pair Aim/Start corresponding
to the formula. This time, the pivot will be ball number 2
and the pivot line will be the ball’s tangent and not its
axis. You will then need to find the corresponding ball in
order to reach the aiming point obtained. The two examples
below show how to obtain the same aiming point with different
number 1 ball positions.
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| Third
rail numbers (on short rail) |
4th
rail (on long rail) |
5th
rail (on the front long rail) |
| 30 |
7th
diamond |
1st
diamond |
| 40 |
Between
6th and 7th diamond |
Between
1st and 2th |
| 50 |
6th
diamond |
At
the corner of the short rail |
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Extend
formula to realize this shots.
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That’s
it ! And to show you that this method is valid for various
points, here’s how to calculate the famous "umbrella" point
(but be careful it’s still a hard shot to accomplish).
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