What is the fastest brilliant move you can get in a game?

here is the fastest brilliant move I think (it's the knight sack it opens up the queen)

I found that damiano's defense gives a brilliant move in two moves.

FYI: The legendary knight sac in the Daminao Defense allegedly stops receiving a "brilliant" tag when you reach a certain ranking. It's a common pattern and pretty well-known by anyone who is at least decently experienced with the game (plus, virtually no one past "complete noob" skill level plays 2. f6 anyway), so it kind of loses its value as a result.

its a brilliant i tried it

I can't imagine how this wasn't mentioned 2 years ago when this topic was fresh.

Oh wait.

I think that there is this this trap in the Italian where you castle instead of protecting your knight

sacrifice the knight on damiano defense, 3rd move

you win a rook pretty soon after Qh5+

if g6 then you immediately win it, if they go Ke2 it takes a while but you still win it

It's called the Damiano Gambit and it's usually good for white

Yes, it is the combination you posted. I got it as a brilliancy in a game and it played out very well.