World Chess Championship 1966

The 1966 World Chess Championship was played between Tigran Petrosian and Boris Spassky in Moscow from April 9 to June 9, 1966. Petrosian won.

Qualification

  Quarterfinals Semifinals Finals
                           
    Boris Spassky 6  
  Paul Keres 4  
    Boris Spassky 5½  
    Efim Geller 2½  
  Vassily Smyslov 2½
    Efim Geller 5½  
      Boris Spassky 6½
    Mikhail Tal 3½
    Bent Larsen 5½  
  Borislav Ivkov 2½  
    Bent Larsen 4½
    Mikhail Tal 5½  
  Lajos Portisch 2½
    Mikhail Tal 5½  

The World Championship match

The match was played as best of 24 games. If it ended 12-12, Petrosian, the holder, would retain the Championship.

World Chess Championship Match 1966
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Points
 Tigran Petrosian (Soviet Union) ½ ½ ½ ½ ½ ½ 1 ½ ½ 1 ½ ½ 0 ½ ½ ½ ½ ½ 0 1 ½ 1 0 ½ 12½
 Boris Spassky (Soviet Union) ½ ½ ½ ½ ½ ½ 0 ½ ½ 0 ½ ½ 1 ½ ½ ½ ½ ½ 1 0 ½ 0 1 ½ 11½

Petrosian retained his title.

External links

pre-FIDE
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Split title
Classical
FIDE
FIDE