In general, Karpov's style has been described by many as a boa constrictor style used to strange opponents depriving them of counterplay until they were only left with bad or losing moves and sometimes virtual zugzwangs.

"Many of Karpov's intentions become understandable to his opponents only when salvation is no longer possible." - Mikhail Tal

"When observing Karpov's play or playing against him, one cannot help thinking that all his pieces are linked by invisible threads. This net moves forward unhurriedly, gradually covering the enemy squares, but, amazingly, not relinquishing its own." – Alexander Roshal

"There are very few madmen who risk employing Pirc or King's Indian against Karpov." - Alexsander Shashin

"Known as a negative player, Karpov sets up deep traps and creates moves that seem to allow his opponent possibilities - but that really don't. He takes no chances, and he gives his opponents nothing. He's a trench-warfare fighter who keeps the game moving just an inch at a time." - Bruce Pandolfini

"At first I found some of his moves not altogether understandable, and only after careful analysis did I discover their hidden strength." – Ljubomir Ljubojevic

"Karpov. uses every piece with maximum effect... Minimal resources always produced maximum effect" - Kasparov on Karpov in Lex Fridman podcast  - went on to say Magnus Carlsen is like Fischer merged with Karpov

"Karpov is very good at boring positions, very good at using the minimal advantages in his position, very good in defending in difficult situations, and not very good in positions with a broken material balance. I was more aggressive in inventing new openings" - Kasparov on Karpov in Bigthink interview

"Karpov isn't so interested in his own plan, but he will keep on foiling yours!"- Vishy Anand