Why?
Player using PCs destroy this site.

Chess.com takes cheating very seriously: see https://support.chess.com/customer/en/portal/articles/1444879-fair-play-on-chess-com-what-you-need-to-know?b_id=12321 and https://www.chess.com/blog/DanielRensch/cheating-on-chesscom.
Having said that, public accusations in the open forums is not acceptable, so I am locking this thread; please report any suspected cheating to the Support team via https://support.chess.com/customer/portal/emails/new and trust that it will be examined, even if there is no immediate visible action.
To learn more about cheat detection, please join the Cheat Detection Club at https://www.chess.com/club/cheating-forum
Thanks,
David ~ Chess.com moderator
Where is the shame!