What is a brilliant move in chess?
On Chess.com, a brilliant move is "when you find a good piece sacrifice," in the words of its Help Center. The move must be the best or nearly best one, you must not be in a bad position afterwards, and you must not have been completely winning without it. Brilliant is a Chess.com label; Lichess doesn't use it (how the two reviews differ).
Below are the official conditions, two real positions from my games that show the difference between a sacrifice and an ordinary good move, and what to do when your sacrifice doesn't get the badge.
Chess.com's conditions for a brilliant move
From Chess.com's Help Center article How are moves classified? (dated February 9, 2026, checked November 2026):
| Condition | What it means in practice |
|---|---|
| A good piece sacrifice | You give up material on purpose, and it works |
| Best or nearly best move | The engine agrees it's (almost) the top choice |
| Not in a bad position afterwards | The sacrifice can't leave you worse off |
| Not already completely winning | If any sensible move wins, the sacrifice isn't special |
| Rating matters | Chess.com is "more generous in defining a piece sacrifice for newer players" |
The same article describes a Great move as one that was critical to the outcome of the game, such as turning a losing position into an equal one, again with more generosity for newer players. A Best move is the engine's top choice, losing 0.00 expected points.
Chess.com doesn't publish the exact sacrifice test, so I won't guess at it. What's clear from the wording: no sacrifice, no Brilliant, however strong the move is.
A real sacrifice: giving the rook back with check
February 29, 2024. I'm White (982) against celo84 (1009) in a 20-minute game (game on Chess.com). Black's bishop on e5 was attacking my rook in the corner on a1, and my other rook on e4 was in front of Black's king.
I took the bishop with my rook, with check, even though the king could take the rook. Stockfish agrees it's the best move, and it's the only one that keeps the game about equal: after the king takes, my knight jumps in with check and then takes the rook on h8. The two alternatives the engine checks next, another rook check or grabbing a pawn, leave Black winning: in both lines Black's bishop takes one of my rooks.
That's the shape of a sacrifice: I gave the rook for a bishop and got the material back a move later. Whether Chess.com marked it Brilliant I can't tell you, because my data doesn't include Chess.com's move labels. The position was about equal before and after, so it doesn't break the "completely winning" rule.
A strong move that isn't a sacrifice
October 21, 2025. I'm White (1193) against 99NoahC (1214) in a 10-minute game (game on Chess.com). My knight could jump to c6 with check.
This is a fork, one piece attacking two things at once: the king and the rook on d8. The pawn on b7 looks like it can take the knight, but it can't: my queen on b3 lines up with Black's king behind it, so the pawn is pinned (it can't move without exposing its king). The king has to step aside and my knight takes the rook.
It's the engine's best move and it wins material, but nothing was sacrificed, and I was already clearly better before it. By Chess.com's written rules, that's a good move, not a Brilliant one. I went on to lose this game, which is a reminder that one good move doesn't decide much.
Why your sacrifice didn't get Brilliant
- It wasn't really a sacrifice. If the piece can't actually be taken, or taking it loses, you gave nothing up.
- You were already completely winning. The badge rewards moves that matter.
- It wasn't the best or nearly best move. A sacrifice that works against a weak reply can still be a mistake.
- It left you worse. Then it's a gamble, not a Brilliant move.
- The analysis changed. Chess.com says its quick game-over analysis and full Game Review can classify moves differently (explanation).
For the other end of the scale, see inaccuracy vs mistake vs blunder.
How Chess Coach handles good moves
Chess Coach, a connector for Claude and ChatGPT, reviews finished Chess.com and Lichess games with Stockfish on our own server. It doesn't give Brilliant badges. Among the key moments ①②③ it can include a good move you found, next to your mistakes, and your assistant explains in plain words why it worked, like the knight fork above. On the board you can step through the line and press "Why?" to ask more. The free plan includes one in-depth review a day. Connect Chess Coach, or compare it with Chess.com's Game Review.
Frequently asked questions
What counts as a brilliant move on Chess.com?
Chess.com's Help Center says a Brilliant move is when you find a good piece sacrifice. It must be the best or nearly best move, you shouldn't be in a bad position afterwards, and you shouldn't have been completely winning without it.
Why didn't my sacrifice get Brilliant?
Usually one of the conditions fails: the sacrifice wasn't the best or nearly best move, you were already completely winning, or you ended up in a bad position. A move that wins material without giving anything up isn't a sacrifice at all.
What is the difference between a Brilliant and a Great move?
On Chess.com, Brilliant is about a good piece sacrifice. Great moves are moves that were critical to the outcome, such as turning a losing position into an equal one.
Does Lichess have brilliant moves?
No. Lichess's computer analysis only marks inaccuracies, mistakes and blunders (?!, ? and ??).
Is it easier to get a Brilliant at a low rating?
Yes, according to Chess.com. Its Help Center says it is more generous in defining a piece sacrifice for newer players than for higher-rated ones.