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| Caribbean-Central American zonal 1 | Caribbean-Central American zonal 2 | South American zonal | West Asian zonal | Asian Pacific zonal | Mediterranean-African zonal ||
|| Riga interzonal | Rio de Janeiro interzonal || Candidates QF | Candidates SF | Candidates F || WCh match ]

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Abano Terme (Italy), 2nd - 24th August 1980 name Elo flag pts 1 2 3 4 5 6 7 8 9 10 11 ⇑ GM Hübner, Robert 2600 6½ ½ ½ ½ ½ ½ ½ ½ ½ 1 1 ½ GM Portisch, Lajos 2655 4½ ½ ½ ½ ½ ½ ½ ½ ½ 0 0 ½

Buenos Aires (Argentina), 21st July - 20th August 1980 name Elo flag pts 1 2 3 4 5 6 7 8 9 10 11 12 P1.1 P1.2 ⇑ GM Kortschnoj, Viktor 2695 7½ ½ ½ ½ 1 ½ 0 ½ 1 ½ ½ ½ 0 ½ 1 GM Polugaevsky, Lev 2635 6½ ½ ½ ½ 0 ½ 1 ½ 0 ½ ½ ½ 1 ½ 0

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