Some lines above you can see the same question;-)... Isn't a row the same as "on one line"? "11:12" and "11:21" are on the same and only line/row of these digital digits... Perhaps it's a "language problem" - i think there will be many "misunderstandings";-)...

12:11 doesn't have 3 same digits in a row, so the description looks OK to me in this respect.

Ok, have it... please update your description, it's a simple kata with a unclear description;-)...

Your description is very unclear, and testcases don't help... For example you mean same numbers directly behind, so 12:11 is not correct, but has three same numbers...