Back around: check the kiss risk first
Watch the first object ball as well as the cue ball, and compare the risk of the balls meeting again with the conditions that avoid it.
For beginners · about 20 min of practice · Based on a video by 방수좋아 당구TV
One thing to remember today
Even if the paths cross, the balls miss if they pass at different times. Watch both balls together.
Written and edited by TTBoys · How we write and check sources · Report an error
A kiss (often called "jjong" in Korean) is an unwanted collision between balls during a shot. This back-around lesson looks at the risk of the cue ball and the first object ball meeting again. If you only watch the cue ball's path to the last ball, it is easy to miss the risk. Also check where the first object ball moves and when it comes back.
1. Start with the original scene
If playback is blocked or you want to see the scene again, watch from 2:00 on YouTube ↗
The scene buttons jump to the times we checked. Keep watching for the full explanation and the actual shot.
2. Sum it up in a diagram and check the conditions
- Source layout
- At 4:00 the first object ball is about 1–2 balls off the cushion and the second object ball is near the corner. The source presents a condition where the cue ball, the first object ball and the opposite corner are close to one line.
- Risk labels
- The 99% in the title and the 50, 70 and 90% on screen are the creator's ways of stressing the risk. We could not confirm a measurement method or sample, so we don't use them as statistical collision probabilities.
- Correction conditions
- At 7:00 the cue ball is in a layout off the earlier risk line. Don't apply its explanation of avoiding the kiss with a thickness and tip position combination directly to the earlier aligned layout.
- What to watch
- Check not only the paths of the cue ball and the first object ball but also when they pass each other. The diagram below shows the order of observation; it is not a prediction of actual ball paths.
3. Follow the steps
Find the collision scene first
Play back and forth around 2:00 and see which two balls meet again and where. Tell the planned first object ball contact apart from the unwanted second collision.
Write down the risk conditions in three parts
At 4:00, check the gap between the first object ball and the cushion, the second object ball's position near the corner, and the alignment of the cue ball, the first object ball and the corner. Don't judge it the same risk just because it is a similar back around.
Keep the other layout's solution separate
From 7:00, first check how the cue ball position changed. Record the thickness and tip position examples that follow as conditions of that layout, and don't memorize "just add more spin and it's solved."
Record each ball's path
Repeat the same layout and write down the cue ball's cushion order and the section where the first object ball comes back. If you avoided the kiss but lost the scoring path, the solution isn't complete.
If it isn't working, start here
Thinking crossing paths always means a kiss
Balls collide only if they overlap at the same moment. Look at which ball passes first as well.
Calling it a success just because there was no kiss
The drill's observation goal and scoring are different. After avoiding the kiss, check separately whether the cue ball heads to the intended cushion and the second object ball.
A drill suggested by TTBoys
4. Risky layout 5 shots + comparison layout 5 shots
Shots 1–5: Using the source's risky layout as a guide, predict whether the two balls will meet again and check.
Shots 6–10: Using the other cue ball position example at 7:00 as a guide, record the conditions from scratch and compare.
This drill teaches prediction, so a shot that kissed still counts as done if it matched your prediction. The two sets use different layouts, so they don't prove a single correction effect or a collision probability.
It's done when your prediction of whether a kiss happens matches the actual result. Note kisses and scoring separately.
Tap a number to cycle: not recorded → hit → needs work.
0/10 recorded · goal hit 0 times
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Related reading
Sources and what was checked
뒤돌려치기 99％ 쫑입니다! | 방수좋아 당구레슨 66탄
방수좋아 당구TV · Published 2023-02-13 · Checked 2026-10-10
Why this video: #9 by popularity on the 방수좋아 당구TV Videos tab · 1,153,615 views (checked 2026-10-03). This is not an overall ranking including Shorts and live streams, and views and order can change.
Ninth in the official channel's Videos tab sorted by popularity. We checked the description and the screens at 2:00, 4:00, 6:00, 7:00 and 9:00. We did not turn the risk percentages into verified statistics, and we kept the stroke conditions of the different layouts apart.
We checked the video description and the selected scenes. We did not verify the full transcript or measure anything on a real table. The steps, diagrams and 10-shot drill are TTBoys' editing and do not imply review or partnership by the creator.