This guide will teach you how to find and play brilliants in your games. To get a brilliant, you have to e very good sacrifice or move. Sometimes, it can be a blunder, or it can be a brilliant. So, you have to think 10 steps ahead of your opponent.
You aren't correct. A blunder can never be a brilliant move.
If you look at chess.com’s definition of a brilliant move , it says brilliant moves are a good piece sacrifice and are always or nearly always the best move.
10 step calculations aren't required. For most of them, two move calculation is sufficient.

Put your Brilliants here!!