Help, I play on chess.com mobile app

What about it?

I'm not sure why I got this, and I only play on mobile where I don't believe I can get extensions. I don't want to be banned, I'm not sure what to do.

why brilliant?

Artemisia should Google it (she's black)

Can you find mate in 4? White to move.

Opponent resigned after taking their knight

Aesthetic mate in 1

Why is castling here brilliant move?

How do I win from this position as black?

What about it?

Is it possible to win from this possition as black?

It’s may look like white is easily winning in this position, but can you find the game changing move for black?

Studying London system has finally paid off! 95.5 accuracy game

Got a great mate because opponent didn't play en passant