Reference position: 50 − 30 = 20Start: 50Arrival: 20Aim: 30Start at corner 50, arrival 20 on the 3rd cushion. Aim = 50 − 20 = 30 (3rd diamond of the right long cushion). With a start from 50 there is no correction; the ball follows the 20 track line to the bottom-right corner.
Diamond System · Drill cards
Aim = Start − Arrival
50 − 20 = 30Start: 50Arrival: 30Aim: 20Start 50, arrival 30 on the 3rd cushion (3rd diamond). Aim = 50 − 30 = 20. The ball follows the 30 track line to the 1st diamond from the right on the bottom short cushion.
Start from the long cushion: 40 − 20 = 20Start: 40Arrival: 20Aim: 20Start 40 on the left long cushion (2nd diamond from the bottom), arrival 20. Aim = 40 − 20 = 20. Up to the 3rd cushion the calculation holds exactly; on the 4th cushion the ball comes up slightly short from this start.
Start from the long cushion: 30 − 10 = 20Start: 30Arrival: 20Aim: 10Start 30 (middle diamond), arrival 20. Aim = 30 − 20 = 10 (1st diamond). 50 − 30, 40 − 20 and 30 − 10 go to the same 3rd-cushion point.
Start from the short cushion: 70 − 50 = 20Start: 70Arrival: 20Aim: 50Start 70 at the middle diamond of the bottom short cushion, arrival 20. Aim = 70 − 20 = 50 (5th diamond). On the 4th cushion the ball runs slightly long from this start.
Long arrival: 90 − 10 = 80Start: 90Arrival: 80Aim: 10Start 90 (1st diamond from the right on the bottom short cushion), arrival 80 on the 3rd cushion (6th diamond). Aim = 90 − 80 = 10. Because the arrival is above 40, the 3rd-cushion values are half a diamond apart.
Cue ball away from the cushion: 46.5 − 16.5 = 30Start: 46.5Arrival: 30Aim: 16.5Arrival 30. The first try, the line 45 − 15 = 30, does not pass through the cue ball; when the line is turned over the ball, the start becomes 46.5 and the aim 16.5: 46.5 − 30 = 16.5.
4th cushion, start from the long cushion: 30 → cornerTarget on the 4th cushion (track correction): YesStart: 30Arrival: 20Aim: 5Target 20 on the 4th cushion (bottom-right corner). Basis: 30 − 20 = 10. Since the start is 30, the track correction is (30 − 50) / 4 = −5 → aim 5. The ball comes to 25 on the 3rd cushion and, with its tendency to come up short, reaches the corner.
4th cushion, start from the short cushion: 70 → cornerTarget on the 4th cushion (track correction): YesStart: 70Arrival: 20Aim: 55Target 20 on the 4th cushion (bottom-right corner). Basis: 70 − 20 = 50. Since the start is 70, the track correction is (70 − 50) / 4 = +5 → aim 55. The ball comes to 15 on the 3rd cushion and, with its tendency to run long, reaches the corner.