Who did Spassky lose against in an unofficial rematch in 1992?
Garry Kasparov
Bobby Fischer
Vladimir Kramnik
Magnus Carlsen
Answer
In 1992, Bobby Fischer defeated Boris Spassky in an unofficial rematch, 10.5–5.5. The match was held in Yugoslavia in spite of the United States government's efforts to stop it, as Yugoslavia was under international sanctions at the time.
The Mastermind of Chess: Unveiling Boris Spassky's Legacy