Originally posted by Tyrannosauruschex
That is why some strong players who use engines to "save them the bother" can go unchecked for a long time - they have some OTB credentials already and often are quite capable of playing their own moves or finishing a game off once the engine has got them an advantage.
I, of course, did not address the strong player using an engine.
Of course such a player is unlikely to be losing when he turns the engine on. Such players will use books and DBs, will be quite capable of visualising middle game tactics and strategy and will be good end game players.
They don't need an engine to play but rather they choose their own moves and only use it to "blunder check" and providing their move does not change the assessment from winning to losing they make their move.
Such players are almost impossible to catch but they are already very strong and can probably beat everyone here below 2200 fairly easily.
Can they be caught? Only if they get careless or lazy.
Are they among us? I cannot name names but there are supicions that some of the top ten players do exactly this.