Wait, so what's with the 'point system' here? Why's shdon answer for backrefs 199 and yours 201? (and while you're at it, could you briefly explain (...).*\1 for the regex newbies?)
(...) # Match exactly 3 (the dots) characters and save them as a group (the parenthesis)
.* # Match any character (the dot) 0 or more times (the asterisk)
\1 # Reuse the first groupisn't working !! ain't I back referencing the first group which is (...) ?
You're reusing the regex and not the match. Back referencing essentially means that you'll match whatever is matched the first time, rather than reusing the regex pattern.
I hope that made a little sense. Grouping, capturing, matching and backreferences is part of what makes regex tricky and very powerful. You might want to use some of the online tools, which can help explain the regex visually.