a brilliant move is a move where it is the only good move in a position and you have to play a correct combination of moves to guarantee yourself an advantage. it has nothing to do with whether or not the engine saw the move or if it is better than the best move
wrong the brilliant move is a move that the engine had to go higher depth to see why it is so good wich means its better than the best move
That's just what some people think; not an established fact. My own opinion is that "brilliant move" is awarded randomly. Best move is often what it says but not usually, because the computer isn't set for deep analysis. An excellent move may be poor and a good move could be the losing move.
Computer will change analysis sometimes and don't think it is better than the world champion of people some people beat it
In my understanding, an excellent move must be better than best move but the frase "Best move" must be by definition the best move, even better than excellent. Which is it????
The analysis is complete bollox. If you take the time to actually analyze your game on your own or with engine assistance you will find moves that are called inaccurate, good, or even blunder when your analysis concludes that it was the best move. Conversely, you will see moves called best that turn out to be stinkers upon further analysis. Also, engines are dumb and have no concept of strategy (except maybe Alpha Zero and Leela) I wouldn't even use the feature to be completely honest with you, it's a waste of time. It is wrong there are people better than the analysis