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Spaced repetition: each system comes back just before you would forget it. Fast, correct answers stretch the interval; a miss brings it back the same day.
Free practice: South System (사우스 시스템)Score 0/0
South System (사우스 시스템)
Spin = Start + Aim + Arrival (+ Correction)
Your ball:White(cue ball · 1)
Other balls:YellowRed
Expected shot:South System (사우스 시스템)Ball firstCushion orderShort → Long → Short
The cue ball hits ball 2 first, then travels the cushions in order to ball 3.
Given:
Aim0Start0Arrival0
In this position, what is Spin?
Task: put the given values into the system's formula and calculate Spin. Enter the answer as a spin value (number of tips).