Reverse Spin (Contraefecto)The last-resort system — always maximum reverse spin

Cushion orderL→L→SDifficulty PRO🖨 Drill cards ✓ Exam on this system PRO 📐 Measure on your table PRO

ScalesReference linePath

Reference positionArrival 10Start 40Aim 45

Spinside +4 · center

—

Ball fractionNot specified

SpeedNot specified

⧉ Project on table ▭ Show on wall

✎ Editor's note: The diagram shows '3.25 diamonds' along the first leg and along the green line drawn from the top-left corner; the black line from ball 2 down to the right cushion is parallel (≈) to the green line. These lines are not explained separately.

Start 40, Arrival 10: 40 + 10 / 2 = 40 + 5 = 45. No compensation. Maximum spin (4).

Reverse spin is a very delicate system: by the time we decide to use it, the balls are usually in an awkward position. It is most likely used as a last option, when we cannot see the shot clearly with another method using natural spin.

When? When no clear solution can be found with natural-spin systems, and the cue ball is to travel to the target off the right long cushion, the left long cushion and the top short cushion.

✓ 3/3 examples verified by the formula

Calculate

Aim = Start + Arrival / 2 (± compensation)

Start

Arrival

Aim45

Base: Start + Arrival / 245
Aim45

✓ Example: Start 40, Arrival 10

Voice coach

PRO

The voice coach is part of the Pro and Club plans.

See plans

Watch outAlways played with maximum spin.

Watch outIt is a very delicate system; use it as a last option when you cannot see another solution with natural spin.