Probably Garry Kasparov
Miguel Najdorf is arguably the best Argentine chess player in history.
nigel
Bobby Fischer.
Sven Magnus Carlsen
kini towa!
She is an international chess player, one of the best in the world.
Judith Polgar
gary kasporov
Gary Kasparov
No, but I'd rank him in the top 5.
Based on current FIDE rankings the strongest player would be Magnus Carlsen with an ELO of 2837.
The best chess program is Rybka 3.