Why is this a brilliant move?

Brilliant moves are moves very hard to spot. I have never had one in my analysis. However, in this game, my opponent made a brilliant move that seemed very obvious to make.

https://www.chess.com/analysis/game/live/8568848501?tab=report

Would someone explain how Qxd6 is a brilliant move?

yeah! idk here is one of my brilliancies: https://www.chess.com/analysis/game/live/7447950891

Yeah, it's sometimes weird. Once I got 3 brilliant in a row that seemed regular. https://www.chess.com/analysis/game/daily/289002522?tab=analysis

I'm not sure, maybe it was the best response to the mistake your opponent made and it was the best move that was also hard to find. Good game.

CAPS is honestly really glitchy, and doesn't work very well.  Submit a bug report for this, and eventually chess.com will revamp their system hopefully.  -____-  The taking of a free rook is obviously not brilliant. 

apparently if the computer misses a move at a certain lower depth, once it sees the move it will call it brilliant, regardless of whether it is actually brilliant in a human sense.

Nice answer!

i don't think there is anything wrong with CAPS though...

Computer sees that move immediately for me.  It's literally just taking the rook your opponent handed you. 

There is though.  CAPS is always telling me mundane moves are "brilliant," or that losing moves are actually playable, etc.  If I turn on an engine, it immediately gives me the correct answer, but CAPS misdesignates moves perpetually.  It is honestly very frustrating, which is why I don't use it for any analysis of my games beyond getting a quick idea of tactics missed, etc.

huh, i never noticed this in my own analysis asides from the problem with "brilliant" moves...

There are so many questions in the forums about Chess.com’s game analysis flagging moves as brilliant. The classification should probably be removed from the analysis function, since the assessment rarely makes any sense. In this case, there is nothing brilliant about 14... Qxd6. It’s just an obvious capture of a Rook hanging right in front of the Queen. Impossible to miss it. There are no complex tactics to consider when capturing the Rook either. It’s just sitting there free for the taking. 

Its the only move that doesn't lose and it isn't detected at low depths my take.

Thank you everyone for your answers.

isaacw13467 and 2Kd21, the move isn't brilliant. Yes, it is the best move. But the move is so obvious and is not brilliant. Brilliant moves are very rare and "brilliant" moves. This move was not brilliant.

yeah I only made 1 excellent move in my life of playing chess:to rare

At least it is better than mine

idk why this is briliant please explain i feel like its a very good knight sac https://www.chess.com/analysis/game/live/71737348775?tab=review

I noticed when you sac material for a big advantage that only is obvious in 2+ moves later it gets brilliancies. Greek gift Bxh7 sacs get !! a lot.