What does "excellent" "brilliant" and "great" mean in analysis?

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Avatar of Nomen-Nonatur

Sometimes I play without logging in and then I always see this "analysis". My moves are - if mentioned at all - usually "best", "brilliant", "great" or "good" with the occasional "miss" or "blunder" for good measure.

"Blunder", "miss" and "best" I can understand.

What does "great" mean? Obviously this is not a "best" move, so what is it? A subpar move that doesn't ruin as much as a blunder would?

And what is "brilliant"? Is that a move that achieves something similar to what the "best" move would do, just in a very complicated and unobvious way?

Furthermore, what is "good"? My interpretation (which could be wrong) is that it is a bad move which gives away most but not all of the advantage.

I'd be glad if someone could explain this exactly. Or is this analysis feature (which can't be switched off when not logged in) just the chess.com version of annoying advertisements so that one is nudged to creating an account?

Avatar of Josh11live
Great means you played the only move that doesn’t lose or the only move that keeps the advantage while best means you had many good alternatives and brilliants are sacrifices and these only count if you wouldn’t have a good advantage if you didn’t see the brilliant and if the opponent is forced to take it or all lines are leading to a winning position
Avatar of DreamscapeHorizons

It means excellent, brilliant, aaaand great.

Ask me another question, this is fun.

Avatar of Fr3nchToastCrunch

Excellent — a move that is very close to the best (usually second-best) to the point that there really isn't much of a difference.

Great — The only move in a position that... (see below)

- Equalizes the game in a formerly losing position

- Gains an advantage in a formerly drawn or equal position

- Wins in an already winning position

- Doesn't lose in a drawn position

- Causes the player's position to go from losing to winning

Brilliant — There are two different definitions:

- Chess.com: a good move that leaves a piece hanging. (No, seriously. That's it.)

- OTB: a surprising and unintuitive move which is extremely difficult to find and often looks like a horrific blunder at first glance, but is actually very strong and typically leaves the opponent in a position where every move loses. It can also rarely be used for unexpected moves in a "losing" position that allow the player to escape with a draw.

Avatar of TetrisFrolfChess

Cool

Avatar of Martin_Stahl

https://support.chess.com/en/articles/8572705-how-are-moves-classified-what-is-a-blunder-or-brilliant-etc

Avatar of Nomen-Nonatur

Many thanks for the answers and special thanks to @Martin_Stahl for the link to these exhaustive answers. I have searched for exactly this but not found it.