World Championship Game #1 Spassky vs Petrosian, 1966  (B18) Caro-Kann, Classical, 37 moves, 1/2-1/2 World Championship Game #2 Petrosian vs Spassky, 1966  (D59) Queen's Gambit Declined, Tartakower, 50 moves, 1/2-1/2 World Championship Game #3 Spassky vs Petrosian, 1966  (B14) Caro-Kann, Panov-Botvinnik Attack, 43 moves, 1/2-1/2 World Championship Game #4 Petrosian vs Spassky, 1966  (E08) Catalan, Closed, 44 moves, 1/2-1/2 World Championship Game #5 Spassky vs Petrosian, 1966  (B14) Caro-Kann, Panov-Botvinnik Attack, 79 moves, 1/2-1/2 World Championship Game #6 Petrosian vs Spassky, 1966  (D40) Queen's Gambit Declined, Semi-Tarrasch, 15 moves, 1/2-1/2 World Championship Game #7 Spassky vs Petrosian, 1966  (A46) Queen's Pawn Game, 43 moves, 0-1 World Championship Game #8 Petrosian vs Spassky, 1966  (A33) English, Symmetrical, 23 moves, 1/2-1/2 World Championship Game #9 Spassky vs Petrosian, 1966  (B14) Caro-Kann, Panov-Botvinnik Attack, 26 moves, 1/2-1/2 World Championship Game #10 Petrosian vs Spassky, 1966  (E63) King's Indian, Fianchetto, Panno Variation, 30 moves, 1-0 World Championship Game #11 Spassky vs Petrosian, 1966  (C10) French, 26 moves, 1/2-1/2 World Championship Game #12 Petrosian vs Spassky, 1966  (A00) Uncommon Opening, 39 moves, 1/2-1/2 World Championship Game #13 Spassky vs Petrosian, 1966  (B18) Caro-Kann, Classical, 91 moves, 1-0 World Championship Game #14 Petrosian vs Spassky, 1966  (A05) Reti Opening, 57 moves, 1/2-1/2 World Championship Game #15 Spassky vs Petrosian, 1966  (A07) King's Indian Attack, 55 moves, 1/2-1/2 World Championship Game #16 Petrosian vs Spassky, 1966  (A00) Uncommon Opening, 49 moves, 1/2-1/2 World Championship Game #17 Spassky vs Petrosian, 1966  (A07) King's Indian Attack, 29 moves, 1/2-1/2 World Championship Game #18 Petrosian vs Spassky, 1966  (E17) Queen's Indian, 33 moves, 1/2-1/2 World Championship Game #19 Spassky vs Petrosian, 1966  (C11) French, 68 moves, 1-0 World Championship Game #20 Petrosian vs Spassky, 1966  (E59) Nimzo-Indian, 4.e3, Main line, 41 moves, 1-0 World Championship Game #21 Spassky vs Petrosian, 1966  (C11) French, 39 moves, 1/2-1/2 World Championship Game #22 Petrosian vs Spassky, 1966  (A40) Queen's Pawn Game, 35 moves, 1-0 World Championship Game #23 Spassky vs Petrosian, 1966  (C11) French, 31 moves, 1-0 World Championship Game #24 Petrosian vs Spassky, 1966  (E60) King's Indian Defense, 77 moves, 1/2-1/2 24 games