When I were a lad, billiards was 3 for potting|in-off the red, 2 for potting|in-off the white, 2 for a cannon. Can't recall the penalty for a miss - too rare!
But on Eurosport today I saw the modern version.
Not a 12foot table - 9? 2.5metres? Somewhere around that.
So it's just cannons. And they score just 1. And...
The cue ball has to hit at least 3 cushions before hitting the second object ball.
First to 50 for a quarter final.