[ Competition summary || European zonal 1 | European zonal 2 | European zonal 3 | Soviet zonal | US zonal | Canadian zonal |
| 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 ]

<< [ Final Standings || Quarterfinal || Information ] >>

Bad Lauterberg (Germany), 16th March - 9th April 1980 name Elo flag pts 1 2 3 4 5 6 7 8 9 10 ⇑ GM Hübner, Robert 2600 5½ ½ ½ 1 ½ 1 0 ½ ½ ½ ½ GM Adorján, Andras 2550 4½ ½ ½ 0 ½ 0 1 ½ ½ ½ ½

Alma-Ata (Soviet Union), 24th March - 12th April 1980 name Elo flag pts 1 2 3 4 5 6 7 8 ⇑ GM Polugaevsky, Lev 2635 5½ 1 1 ½ ½ ½ ½ 1 ½ GM Tal, Mikhail 2705 2½ 0 0 ½ ½ ½ ½ 0 ½

Mexico City, Xalapa, Mexico City (Mexico), 30th March - 3rd May 1980 name Elo flag pts 1 2 3 4 5 6 7 8 9 10 P1.1 P1.2 P2.1 P2.2 GM Spassky, Boris 2615 7 0 ½ ½ ½ ½ ½ ½ ½ 1 ½ ½ ½ ½ ½ ⇑ GM Portisch, Lajos 2655 7 1 ½ ½ ½ ½ ½ ½ ½ 0 ½ ½ ½ ½ ½

Portisch qualified because he had more wins with Black (1 vs 0)

Velden (Austria), 8th - 25th March 1980 name Elo flag pts 1 2 3 4 5 6 7 8 9 ⇑ GM Kortschnoj, Viktor 2695 5½ ½ ½ ½ ½ 1 ½ ½ ½ 1 GM Petrosian, Tigran 2615 3½ ½ ½ ½ ½ 0 ½ ½ ½ 0

Information