Hgiga mailsherlock

A clever reference!

"Hgiga" is a play on the word "huge" and "Giga", a prefix meaning "gigantic" or "enormous". And "Mailsherlock" is a nod to the famous fictional detective Sherlock Holmes, known for his extraordinary abilities of observation and deduction.

So, I'm assuming you're asking me to solve a puzzle or mystery, and you're hinting that it's a "huge" or "enormous" challenge?

Please go ahead and provide the puzzle or mystery, and I'll do my best to help you solve it!