what defines a brilliant move?

I want to know if the brilliant is any sac that makes you win or if it is the move that changes the flow of the game, for example in move 23 in this game I was already winning but sac-ing my rook for a mate didn't give me a brilliant so what is matter here 

@1

"the brilliant is any sac that makes you win"
++ More or less on chess.com, even depends on rating...

"it is the move that changes the flow of the game"
++ You cannot change the flow for the better, only for the worse

sac-ing my rook for a mate didn't give me a brilliant
++ A logical definition of a brilliant move involves 4 criteria:

1. It is a move that wins: drawing or losing moves are not brilliant
2. It is the only move that wins: when two moves win, then none is brilliant
3. It involves a sacrifice: sacrifices are aesthetically pleasing
4. It is a quiet move: no check (+) or capture (x) as these are too obvious to be brilliant

In this case 23...Rxg2+ satisfies criteria 1 and 3, but fails criteria 2 and 4.

I don't think the criteria 4 is true , let's take for example the famous queen back rank sac for mat , the engine always consider it as a brilliant

A brilliant move is one in which does 3-4 things at once, turns an equal position into a winning position and allows you to transition to a +3 advantage imo. You will know when you play a brilliant move.

THE ROOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOK!

The definition that tygxc gave is his own definition. It has nothing to do with what chess.com uses. In chess.com, the definition is "a sacrifice that's good". Or close.

Also, "the engine" does not use adjectives like "brilliant" at all. This is done by chess.com's own software (probably a simplistic script). The engine considers nothing as brilliant.

In all seriousness, if you worried more about your play and the results than trying to farm meaningless "brilliant" moves (something put in place by chess.com to massage your egos), you'd likely improve much faster. Ignore the noise.

You are 100% right, but when I look for brilliant moves, it's not I am looking for them themselves, it's just to know if my sac to keep attacking or checkmating is the right move in the position, the reason behind this forum is to understand what chess.com consider as brilliant, because as I mentioned before a lot of times you play the right sacrificial move which considered as the best move, but it's not brilliant.

I believe there's another criteria: if you are way ahead (winning by a lot) then no "brilliant" label is awarded. In the game above, black is up a rook and a piece, so almost all moves win.

In the example that I presented, there is a mate, so that's not the case as I see.

That's maybe the most reasonable reason I saw until now.

Brilliant move is a move that is forcing opponent to respond accuretly. This move can decide game outcome since you could force checkmate or material advantage. It is usually but not always involving sacrificing it is the move that human brain would not consider instantly rather it would try to look for more "logical" variation. It is tough move to find at first and it is very precisely calculated.

Was this written by ChatGPT?

None of it is true.

Dear magipi, thank you for your feedback. However, I would like you to answer me to questions:
1. Why do you care who wrote this post?
2. Where is your proof my post is not true?
Please answer this questions without unecessary discussion or your subjective opionion. I didnt use any software to respond since I have experience in the game of chess. However, again it is none of your buisness to discuss sorce of this post. Answer with proofs or do not answer

Dear Steak-mate11, thank you for your feedback. However, I would like you to answer me my QUESTIONS now clearly.
Who are you to deide who am I going to listen?
Why do you spread false information that he is 2700 GM when he is not. I f you have nothing smart to comment, then dont comment on my comment.

Mn

In this case the sac is too obvious. You are already up so much in material that a sacrifice is a standard move to reduce the king's defenses.