Ke failed to place captured stones in the designated stone container lid on two occasions during the second game of the 29th LG Cup finals in accordance to the latest Go rules in South Korea. This marks the first time a rule violation has led to a loss in a world-class Go tournament final.

These terms are often referred to as 黑话. Just fancier jargons.

Personally, I would reserve Black Speech (the literal meaning of 黑话) for VPs and the PR department.

https://en.wikipedia.org/wiki/Black_Speech