World Chess Championship 1969

The 1969 World Chess Championship was played between Tigran Petrosian and Boris Spassky in Moscow from April 14 to June 17, 1969. This was the second consecutive time Petrosian and Spassky played for the world title. Spassky reversed the previous result; winning the world title and becoming the tenth World Chess Champion.

1967 Interzonal
The 1967 Interzonal Tournament was played in Sousse, Tunisia in October and November. The first six placegetters qualified for the Candidates, along with Boris Spassky and Mikhail Tal who were seeded into the Candidates matches as finalists of the previous tournament.

A major controversy occurred when Bobby Fischer, who was leading the tournament with seven wins and three draws in ten rounds, abandoned the event over a dispute with the organisers. Because Fischer withdrew before he had played half his games, the results of his games were not included in his opponents' totals.

Bent Larsen went on to win, with Korchnoi, Geller, Gligorić, and Portisch taking the next four places.

There was a three-way tie for sixth place among Samuel Reshevsky, Vlastimil Hort, and Leonid Stein, who played a round-robin playoff to determine the final place in the Candidates matches. In the event of a tie, the player with the best Sonneborn-Berger tie break from the Interzonal would qualify. The playoff ended in a three-way tie, so Reshevsky qualified.


 * {| class="wikitable"

! !! !! 1 !! 2 !! 3 !! 4 !! 5 !! 6 !! 7 !! 8 !! 9 !! 10 !! 11 !! 12 !! 13 !! 14 !! 15 !! 16 !! 17 !! 18 !! 19 !! 20 !! 21 !! 22 !! Total !! Tie break
 * + 1967 Sousse Interzonal Tournament
 * - style="background:#ccffcc;"
 * 1 || align=left|🇩🇰 Bent Larsen (DNK) || - || 0 || ½ || ½ || 0 || 1 || 1 || 1 || 1 || ½ || 1 || 1 || 1 || ½ || 0 || 1 || ½ || 1 || 1 || 1 || 1 || 1 || 15½ ||
 * - style="background:#ccffcc;"
 * 2 || align=left|Viktor Korchnoi || 1 || - || ½ || ½ || 1 || ½ || ½ || ½ || 0 || ½ || 0 || 0 || ½ || 1 || 1 || 1 || 1 || 1 || 1 || 1 || ½ || 1 || 14 || 136.00
 * - style="background:#ccffcc;"
 * 3 || Efim Geller || ½ || ½ || - || ½ || ½ || 0 || 1 || ½ || 1 || ½ || ½ || 1 || ½ || ½ || 1 || ½ || ½ || 1 || ½ || 1 || 1 || 1 || 14 || 135.75
 * - style="background:#ccffcc;"
 * 4 || align=left|Svetozar Gligorić || ½ || ½ || ½ || - || ½ || ½ || ½ || 1 || ½ || ½ || ½ || ½ || ½ || 1 || 1 || ½ || ½ || ½ || 1 || 1 || 1 || 1 || 14 || 135.00
 * - style="background:#ccffcc;"
 * 5 || align=left|🇭🇺 Lajos Portisch (HUN) || 1 || 0 || ½ || ½ || - || ½ || ½ || 1 || 0 || ½ || ½ || ½ || ½ || 1 || 1 || ½ || 1 || ½ || ½ || 1 || 1 || 1 || 13½ ||
 * - style="background:#ccffcc;"
 * 6 || align=left|🇺🇸 Samuel Reshevsky (US) || 0 || ½ || 1 || ½ || ½ || - || ½ || ½ || 1 || ½ || ½ || 1 || ½ || ½ || ½ || ½ || 1 || 1 || 0 || 1 || 1 || ½ || 13 || 129.75
 * 7 || align=left|Vlastimil Hort || 0 || ½ || 0 || ½ || ½ || ½ || - || 1 || ½ || ½ || 1 || ½ || ½ || ½ || ½ || ½ || ½ || 1 || 1 || 1 || 1 || 1 || 13 || 120.25
 * 8 || align=left|Leonid Stein || 0 || ½ || ½ || 0 || 0 || ½ || 0 || - || ½ || ½ || ½ || 1 || 1 || ½ || 1 || 1 || 1 || 1 || 1 || 1 || 1 || ½ || 13 || 117.00
 * 9 || align=left|Milan Matulović || 0 || 1 || 0 || ½ || 1 || 0 || ½ || ½ || - || 0 || 1 || 1 || ½ || 1 || 0 || ½ || ½ || 1 || 1 || ½ || 1 || 1 || 12½ ||
 * 10 || align=left|Aleksandar Matanović || ½ || ½ || ½ || ½ || ½ || ½ || ½ || ½ || 1 || - || ½ || 1 || ½ || ½ || ½ || ½ || 1 || ½ || 0 || 1 || ½ || ½ || 12 ||
 * 11 || align=left|Borislav Ivkov || 0 || 1 || ½ || ½ || ½ || ½ || 0 || ½ || 0 || ½ || - || 0 || ½ || ½ || 1 || ½ || 1 || ½ || 1 || 0 || 1 || 1 || 11 || 103.50
 * 12 || align=left|🇧🇷 Henrique Mecking (BRA) || 0 || 1 || 0 || ½ || ½ || 0 || ½ || 0 || 0 || 0 || 1 || - || 1 || 1 || 1 || ½ || ½ || ½ || 1 || ½ || 1 || ½ || 11 || 102.50
 * 13 || Aivars Gipslis || 0 || ½ || ½ || ½ || ½ || ½ || ½ || 0 || ½ || ½ || ½ || 0 || - || ½ || 0 || 1 || ½ || 0 || 1 || ½ || 1 || 1 || 10 || 93.75
 * 14 || Lubomir Kavalek || ½ || 0 || ½ || 0 || 0 || ½ || ½ || ½ || 0 || ½ || ½ || 0 || ½ || - || ½ || 1 || ½ || 1 || 0 || 1 || 1 || 1 || 10 || 90.00
 * 15 || 🇨🇦 Duncan Suttles (CAN) || 1 || 0 || 0 || 0 || 0 || ½ || ½ || 0 || 1 || ½ || 0 || 0 || 1 || ½ || - || ½ || 1 || 0 || ½ || 1 || ½ || 1 || 9½ ||
 * 16 || 🇭🇺 István Bilek (HUN) || 0 || 0 || ½ || ½ || ½ || ½ || ½ || 0 || ½ || ½ || ½ || ½ || 0 || 0 || ½ || - || ½ || ½ || 1 || 0 || 1 || 1 || 9 ||
 * 17 || 🇭🇺 László Barczay (HUN) || ½ || 0 || ½ || ½ || 0 || 0 || ½ || 0 || ½ || 0 || 0 || ½ || ½ || ½ || 0 || ½ || - || ½ || 1 || ½ || ½ || 1 || 8 ||
 * 18 || 🇺🇸 Robert Byrne (US) || 0 || 0 || 0 || ½ || ½ || 0 || 0 || 0 || 0 || ½ || ½ || ½ || 1 || 0 || 1 || ½ || ½ || - || 1 || ½ || ½ || 0 || 7½ ||
 * 19 || 🇨🇴 Miguel Cuéllar (COL) || 0 || 0 || ½ || 0 || ½ || 1 || 0 || 0 || 0 || 1 || 0 || 0 || 0 || 1 || ½ || 0 || 0 || 0 || - || 0 || 1 || 1 || 6½ || 61.00
 * 20 || 🇲🇳 Lhamsuren Myagmarsuren (MNG) || 0 || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 1 || ½ || ½ || 0 || 0 || 1 || ½ || ½ || 1 || - || 0 || 1 || 6½ || 54.50
 * 21 || 🇳🇿 Ortvin Sarapu (NZL) || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 0 || 0 || 0 || ½ || 0 || ½ || ½ || 0 || 1 || - || ½ || 4 ||
 * 22 || 🇹🇳 Slim Bouaziz (TUN) || 0 || 0 || 0 || 0 || 0 || ½ || 0 || ½ || 0 || ½ || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 1 || 0 || 0 || ½ || - || 3½ ||
 * }
 * 15 || 🇨🇦 Duncan Suttles (CAN) || 1 || 0 || 0 || 0 || 0 || ½ || ½ || 0 || 1 || ½ || 0 || 0 || 1 || ½ || - || ½ || 1 || 0 || ½ || 1 || ½ || 1 || 9½ ||
 * 16 || 🇭🇺 István Bilek (HUN) || 0 || 0 || ½ || ½ || ½ || ½ || ½ || 0 || ½ || ½ || ½ || ½ || 0 || 0 || ½ || - || ½ || ½ || 1 || 0 || 1 || 1 || 9 ||
 * 17 || 🇭🇺 László Barczay (HUN) || ½ || 0 || ½ || ½ || 0 || 0 || ½ || 0 || ½ || 0 || 0 || ½ || ½ || ½ || 0 || ½ || - || ½ || 1 || ½ || ½ || 1 || 8 ||
 * 18 || 🇺🇸 Robert Byrne (US) || 0 || 0 || 0 || ½ || ½ || 0 || 0 || 0 || 0 || ½ || ½ || ½ || 1 || 0 || 1 || ½ || ½ || - || 1 || ½ || ½ || 0 || 7½ ||
 * 19 || 🇨🇴 Miguel Cuéllar (COL) || 0 || 0 || ½ || 0 || ½ || 1 || 0 || 0 || 0 || 1 || 0 || 0 || 0 || 1 || ½ || 0 || 0 || 0 || - || 0 || 1 || 1 || 6½ || 61.00
 * 20 || 🇲🇳 Lhamsuren Myagmarsuren (MNG) || 0 || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 1 || ½ || ½ || 0 || 0 || 1 || ½ || ½ || 1 || - || 0 || 1 || 6½ || 54.50
 * 21 || 🇳🇿 Ortvin Sarapu (NZL) || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 0 || 0 || 0 || ½ || 0 || ½ || ½ || 0 || 1 || - || ½ || 4 ||
 * 22 || 🇹🇳 Slim Bouaziz (TUN) || 0 || 0 || 0 || 0 || 0 || ½ || 0 || ½ || 0 || ½ || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 1 || 0 || 0 || ½ || - || 3½ ||
 * }
 * 20 || 🇲🇳 Lhamsuren Myagmarsuren (MNG) || 0 || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 1 || ½ || ½ || 0 || 0 || 1 || ½ || ½ || 1 || - || 0 || 1 || 6½ || 54.50
 * 21 || 🇳🇿 Ortvin Sarapu (NZL) || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 0 || 0 || ½ || 0 || 0 || 0 || 0 || ½ || 0 || ½ || ½ || 0 || 1 || - || ½ || 4 ||
 * 22 || 🇹🇳 Slim Bouaziz (TUN) || 0 || 0 || 0 || 0 || 0 || ½ || 0 || ½ || 0 || ½ || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 1 || 0 || 0 || ½ || - || 3½ ||
 * }
 * 22 || 🇹🇳 Slim Bouaziz (TUN) || 0 || 0 || 0 || 0 || 0 || ½ || 0 || ½ || 0 || ½ || 0 || ½ || 0 || 0 || 0 || 0 || 0 || 1 || 0 || 0 || ½ || - || 3½ ||
 * }
 * }


 * {| class="wikitable"

! !! !! 1 !! 2 !! 3 !! Total
 * + 1968 Los Angeles playoff
 * - style="background:#ccffcc;"
 * 1 || align=left|🇺🇸 Samuel Reshevsky (US) || align=center|- || ==== || ==== || 4
 * 2 || align=left|Vlastimil Hort || ==== || align=center|- || =0=1 || 4
 * 3 || align=left|Leonid Stein || ==== || =1=0 || align=center|- || 4
 * }
 * 3 || align=left|Leonid Stein || ==== || =1=0 || align=center|- || 4
 * }

1968 Candidates matches
Spassky won the Candidates Tournament – as he did in the 1966 cycle – earning the right to challenge Petrosian for the World Championship a second time.

Larsen and Tal contested a third place playoff in the Dutch town of Eersel in March 1969, which Larsen won 5½–2½.

1969 Championship match
The match was played as best of 24 games. If it ended 12-12, Petrosian, the title holder, would retain the Championship.

Spassky won.