The break was using a template rack on a 7 foot table. The plan was for the rear ball to go to the foot rail and straight back to hit the 9 ball which remains where it was racked. My technique was setting the cueball approximately 2 inches off center and hitting the one ball square so whitey pops straight back. The 2 inch shift moves the path of the rear ball just enough that when it returns to the 9 ball it has a chance of going to the upper corner. Maybe even the side but the intention is the corner. It's a dangerous break because the 1 ball goes in the same direction making a 1-9 possible. if no.ball is pocketed my opponent could like it. Making another ball would be lucky. In my practice it was about 1 in 3 making another ball. Making the 9 ball is longer odds, maybe 1 in 10 or longer.

The 1 and 9 being close together gave a second chance at "I got lucky"
If another ball is made. This time I got lucky and made it on the snap. Playing a Professional leads me to employing that break. I would not use it against a Banger.
I got lucky but it was a calculated rolling of the dice.