What qualifies as a brilliancy?

Recently i got my first brilliancy but it was a simple endgame pawn break when each side has 3 pawns and you push the middle pawn and create a passed pawn. What is counted as a “brilliancy” in a game?

dunno. once i just took a free pawn and it was a brilliant

A brilliancy is the best move that the computer didn't see.

The computer saw my move 

They said f6 was brillliant

That was a simple pawn break

Yeah, a brilliancy is a move that the computer didn't think that was the best move, but then it realized that it was the best move. And the computer doesn't know concepts like "the typical pawn break" or "the rule of the square". So it didn't see the best move, which was the "typical pawn break".

It sys best now, so it must have been a bug

I guess the computer learnt from the move, idk

computers can't learn if you don;t teach them as of yet...

There are like 10 engines that can learn. Fritz did that, Leela did that, DeepMind created the original Alpha, and even Stockfish can do that. Komodo has MCTS, which is basically a weaker version of NN that can work on CPU's

This wasn’t an actual game in the board i showed you i will give you the link to the game

https://www.chess.com/live/game/5232111879

See the computer sees it it says +9.77 as the top engine move

A brilliancy has to fulfill the following requirements (in my opinion):
1. Most people can't see it
2. It has to change the dynamic of the game pretty drastically (save a lost position, win spectacularly, etc.)
3. It can't be a pattern that has been played before, it has to be relativiely original.

For those reasons I think your pawn move @Master49er is a great one, but its not a brilliancy. It's just the only move in the position that wins, as hxg5 does not win. Hope that helped!

Yeah it said it was a brilliancy though for some reason probably bc it was the only winning move to save a lost position

Why is a brilliancy called a brilliancy?