what does it take to get a brilliant move!

Anyone can get them not matter their rating.

If you want to see examples you can check out my library: https://www.chess.com/c/2UohNWBoC

I have never gotten a brilliant move.

https://support.chess.com/article/2965-how-are-moves-classified-what-is-a-blunder-or-brilliant-and-etc

this link explains how moves are classified

AND HE SACRIFICES THE ROOOOOOOOOOOOOOOOOK!

ive only had like 3 in my life, with all my different accounts

I've only had 1, sac'd queen for rook, then took his queen with my rook, isolating his pawn in the center.

Zunayed..... still trying to find it....it was a rapid, I think. I play some daily, too,... daily is really fun, but awfully high maintenance!

Brilliancies by chess.com are usually sacs. One time, I had a queen and a rook stacked on a file, and I got a brilliancy for simply sacking it like the first puzzles of a puzzle rush lol.

Usually?

Part of the definition (that chess.com uses) is that it has to be a sacrifice.

Found it...it was me vs. jayhennem on Dec. 20th.

Oh Okay.

GM Seirawan wrote a whole book about real life examples of how to define it when they actally happen. I think the bot heres standard is very low. I remember having 2 or 3 of them and my opponents about as often. On non sensational moves. It may be like the screwy tactic puzzle rating that calls me 2015 at anything haha.

I have never ever found a definition that requires sac having to be involved. Though it more than likely there may often be one. The popular definition seems to be a move a computer doesnt see when it runs at normal ply depth. Then after loooong review a computer will accept it was best move. Being a bot that ordains such things in Game Review I will go with that answer.

I've had a whopping one and only one double-!! so far playing the bots to 1700-level in two months of playing chess. It occurred at the 1400 level (the last available Intermediate bot) by ramming my bishop into a corner, exposing the castled enemy King to a subsequent Queen attack. I think the game still would have been strongly in my favor had the engine declined to take the sac. Part of my learning experience has come from playing with "tools," and selecting a suggested move that ostensibly sacrifices a piece and that has tremendous benefit whether the sac is taken or not have also turned up marked double-!!. I have not seen one from a computer opponent. 
I'll get single - !'s far more often, for as simple of a move as a basic knight fork on a king and a rook to sacs that my ego felt should have earned two !!'s. It will also happen if I do something that "looks unconventional," such as risking a piece by placing it diagonal from a pawn pinned to the King or a higher-valued piece. I am pretty sure these are earned from selecting any far-superior move in numeric value, as long as it's not something basic like recapturing in a position where any in-between is pretty obviously useless. While undoubetdly hard to program, some of the single-! I have seen have left me scratching my head.

That's it Josh.... thanks.... I'm not sure how to post games here yet.....ty!

(responding to #15) I wonder how thats a brilliant move if you are now in a more worse position ( there is a -3.67, arent brilliant moves supposed to make you chances of winning higher?