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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: The Tüzül methodScore 0/0
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On the table, the ringed ball is your ball (1).
The Tüzül method
Table value = Aim + Arrival − Start · Aim = Table value + Start − Arrival
Your ball:White(cue ball · 1)
Other balls:YellowRed
Expected shot:The Tüzül methodMixedCushion orderShort → Long → Short
Given:
SpinSpin 4Arrival10Start15Table value15
In this position, what is Aim?

Task: put the given values into the system's formula and calculate Aim. Enter the answer as the number read on the table's Aim scale.