Review queue

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: Sunrise–Sunset System (일출일몰 시스템)Score 0/0
6543210-1-2-3-4-5-3-2-101234012345123
On the table, the ringed ball is your ball (1). 2 = the ball your cue ball hits first, 3 = the last ball to hit for the point.
Sunrise–Sunset System (일출일몰 시스템)
Spin = Start + Aim + Arrival (+ Correction)
Your ball:White(cue ball · 1)
Ball 2RedBall 3Yellow
Expected shot:Sunrise–Sunset System (일출일몰 시스템)Ball firstCushion orderLong → Short → Long

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).