The Korean version of four-ball billiards (사구) involves contacting the two red object balls without touching the opponents cue ball. Picture taken by me.
<a href="//commons.wikimedia.org/w/index.php?title=User:Countakeshi&amp;action=edit&amp;redlink=1" class="new" title="User:Countakeshi (page does not exist)">Countakeshi</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>