Sorry guys for this mistake...
Remember, I posted a blog- https://www.chess.com/blog/DrWolfeKrishnasis060814/wait-what-an-invisible-unknown-piece-style-in-between-in-my-phone-a-glitch Now I have come to know that it is a very common thing! Blindfold is not a myth... It is just a different kind of mode. Forgive me because I displayed it as a TOP SECRET. I'm sorry and admit my mistake. I didn't know it correctly... 😞