Round 1 Huebner vs Petrosian, 1971  (B10) Caro-Kann, 41 moves, 1/2-1/2 Round 2 Petrosian vs Huebner, 1971  (D58) Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst, 42 moves, 1/2-1/2 Round 3 Huebner vs Petrosian, 1971  (B86) Sicilian, Fischer-Sozin Attack, 28 moves, 1/2-1/2 Round 4 Petrosian vs Huebner, 1971 (D55) Queen's Gambit Declined, 24 moves, 1/2-1/2 Round 5 Huebner vs Petrosian, 1971 (B50) Sicilian, 14 moves, 1/2-1/2 Round 6 Petrosian vs Huebner, 1971  (D53) Queen's Gambit Declined, 15 moves, 1/2-1/2 Round 7 Huebner vs Petrosian, 1971  (B82) Sicilian, Scheveningen, 40 moves, 0-1 7 games