I wonder what depth does the engine classify a move as a brilliant move
Brilliant Moves in New Game Analysis Report

With best play you can still lose the computer is just letting you know it was a great move the 2800 computer blundered later so this brilliant move let me sac the rook and then mate the king
Your game history shows all wins no loses, many in under 10 moves, many to the same "opponents". You need to be banned along with your other dummy accounts.
you're funny my account isnt fake. one the game I posted was against the engine. also clearly you didnt look hard enough because I have lost many games. Hell I post most of them to instagram. You need to try and make someone feel small online nice try faith_dream_happiness go take a look for yourself I'll make a story about how big of keyboard Warrior you are
Guys guys guys. A brilliant move is move that is better than the “best move” the computer showed. A brilliant move is shown after it has been played.


Brilliant move is the best move which the engine can find only after certain depth is reached. So it is difficult to find for the engine.
Does that mean that in a chess game most of the best moves are easy to find? This again means that playing a perfect game is pretty easy since the best moves are easy?
For a computer, best moves are VERY easy to find. Mr. Jalaal in the discussion earlier seems to heavily underestimate them the computer finds them in a blink. When a computer says 'best move' it's something like 'good boy human!' but the brilliant moves, those are the real ones. The computer will need significant processing power to find them, because they are more multiparametric in the multidimensional collective pathfinding search space. Papers on it are open source, for a reference. Just imagine that an engine like AlphaZero can already see the outcome of the game right from the start. It just adapts its pathways to take, to find the quickest route to checkmate. It is nothing 'hard' for the computer, easy vs. hard are human terms. To understand brilliant 'computer' chess, we have to leave everything human behind. It is something (still) alien.

a brilliant move is a move that the engine doesn't see at first
I'm a frayed knot.
Alas for us mortals, computers are far superior at deterministic stuff like chess.
When it reads a 'brilliant' move, it is more an encouragement for us, like 'I wouldn't have expected that from a human'. The computers sees the games from start to end with all its multiple pathways to mate.

did you know that Lasker-Bauer used the Bird's opening?
Larsen also did. It's actually not bad up to a certain level say up to 2500. But after that, it becomes easy to demolish because of weaker endgame structures. His own system also couldn't beat Spassky, these are systems to become a GM maybe but after that, it's down to business.
More on-topic, the depth is being stated as determining the brilliancy of a move.
I would have to add that what defines brilliancy further should be the gains and the means to get there, both materialistically and positionally. If we can gain a rook with a reinforcement + interference + sac + check that's four pro-level maneuvers in one routine, that's better than just the best move to checkmate.
I wonder how this is programmed but I heard the chess.com engines are pretty up to speed.
For example the Bd2 move in front of the queen mentioned at the start of the topic is quite brilliant because it prevents the exchange since the queen is part of an upcoming knight fork. And there are possibly more of these possible routines. Overall white does not want to exchange pieces here because its endgame structure will be much weaker. It is paramount to play for win by piece play and tactics.

I just played this game and both me and my opponent got a brilliant?
I think I played rather badly to be honest
https://www.chess.com/analysis/game/live/5086060570?tab=report
Would you choose either of these as brilliant moves?
Both of you two played badly, yes. I didn’t even look at the game, just the highlighted moves.... lots of reds and orange and yellow lol.
You stumbled upon one
This is because now the queen takes care of the light squares, with a dark sq. bishop available this leads to checkmate even being down in material like that. You always need multiple pieces to mate and that's the way to do it for that game. Always go for the win!

In this game, I played a brilliant move, although I'm not sure why is it not just another best move. Can anyone explain?
My guess is that in this situation the move means that while you were losing, now the tides turned and you are winning.

I don’t really know about either brilliant moves or best moves. If you need information on lousy moves versus terrible moves, reach out to me

"Brilliant" moves are really just cool moves that are tricky to find. They sometimes, although rarely appear in puzzles if you try to analyze them.
Brilliant moves outranks best moves.
Best moves are the moves found and assessed as best by the engine (whether you played it or not)
Hence brilliant moves are only made by the human player.
The engine assesses a move to be brilliant only after it is played (can never be proposed as mentioned above).
The engine was capable to assess a move to be brilliant in comparison to its best move when it is played by finding the outcome to be better than the engine proposed (its best move).
Hence a brilliant move is one that is proven to be best only if the engine had gone into a depth that is further than the depth it traverses, but it does not. This is why it can only figure it out after it is played by the human player.
You're correct, I do not see any contradictory statements in your answer.
You stated, "Best moves are the moves found and assessed as best by the engine." Only after a move is played can the system process the new possibilities and deem the move 'brilliant.'
@Hikarunaku, I believe I can see where you went wrong, but please reread the statement Jalaal wrote. Pay attention to the word after in, "The engine assesses a move to be brilliant only after it is played." What Jalaal is saying the computer doesn't notice the move until a human player plays the move.
-Sorry for how messy my statement is. :')