the biggest comeback in chess history

The greatest comeback in chess history is widely considered Bobby Fischer’s in the 1972 World Championship, where he started the match by forfeiting Game 2 and falling behind 0–2, then surged back to win the title; other famous contenders include Viktor Korchnoi’s near-miracle rally from 2–5 to 5–5 against Karpov in 1978, Magnus Carlsen recovering after losing Game 8 in 2016 to win in tiebreaks, and Kasparov’s turnaround against Deep Blue in 1996 after losing the first game.