White is on the right; yellow and red form a vertical pair on the left. The layout supports a comparison of side-spin directions after a cushion, without prescribing a universally “correct” amount of reverse spin.
Actual starting layout
Ball centres on the 2.84 × 1.42 m reference table. The link loads this layout with white as the cue ball; it does not play a scoring shot. Coordinates start at the lower-left corner.
| Ball coordinates · cm | x | y |
|---|---|---|
| White | 230 | 40 |
| Yellow | 40 | 40 |
| Red | 40 | 105 |
What to compare
Keep the same aiming line and pace, then compare opposite side-spin settings. Note the rebound direction and the first object-ball contact. Use the incoming direction at the cushion to decide which spin is running and which opposes that motion.
Record a baseline, restore the same layout and change one control. Record the first contact, cushion order, any unintended ball collision and final arrival. Keep the speed fixed when comparing side spin; keep the spin fixed when comparing speed.
How to interpret the result
Do not change the target and spin together when comparing the rebound. A missed first object ball is not evidence that the final system number is wrong. On a real table, cue elevation and stroke delivery add variables absent from a simple control comparison.
A three-cushion point requires both object balls and at least three cushion contacts before the second object ball. A preset name is not a certified scoring route. Compare model results with your own table; no universal hit rate or player endorsement is claimed.