The app’s umbrella layout has white below two nearby object balls. Yellow and red form a close pair, making the order and timing of their contacts a useful study question. They are not placed at two fixed long-rail diamond numbers.
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 | 110 | 30 |
| Yellow | 130 | 110 |
| Red | 150 | 118 |
What to compare
Try the two object-ball orders from the same starting layout. Record the departure after the first object ball and whether that ball later crosses the cue-ball route. Compare a small change in contact thickness before changing spin.
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
A return collision and a wrong final arrival are different errors. Use replay to identify the first event that diverges from your plan; a blanket “half-tip” recipe cannot diagnose both.
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.