Chess Investigation Finds That U.S. Grandmaster ‘Likely Cheated’ More Than 100 Times
An internal report reviewed by The Wall Street Journal alleges a previously unknown pattern of likely widespread cheating by Hans Moke Niemann, the player whose September victory over Magnus Carlsen has rocked the chess world.
It sounds like if it is online, cheaters will use a computer algorithm to tell them what move to make. I suppose one would need an ear piece or someone communicating the move to make. In that case, the accomplice would be using the computer algorithm and simply passing on the move to the cheater by earpiece or maybe hand signals or something.
The article goes into more details as well.