World Championship 26th
Moscow 1966| Date | Players | Type | Elo Average | Games | Rounds |
| Apr 11, 1966 | 2 | Match | 24 | 24 |
| Name | ELO | Points | ||
 |
Petrosian, Tigran V | 12.5 | ||
 |
GM Spassky, Boris V | 11.5 | ||
World Championship 26th Games
| White | Black | Result | Round | Date | Opening | View |
| Spassky, B | Petrosian, T | ½-½  |
1 | Apr 11, 1966 | B19 Caro-Kann, classical, 7...Nd7 |   |
| Petrosian, T | Spassky, B | ½-½ |
2 | Apr 13, 1966 | D59 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5 |   |
| Spassky, B | Petrosian, T | ½-½ |
3 | Apr 15, 1966 | D26 Queen's Gambit Accepted, 4...e6 | |
| Petrosian, T | Spassky, B | ½-½ |
4 | Apr 18, 1966 | E08 Catalan, closed, 7.Qc2 | |
| Spassky, B | Petrosian, T | ½-½ |
5 | Apr 20, 1966 | B14 Caro-Kann, Panov-Botvinnik attack, 5...e6 | |
| Petrosian, T | Spassky, B | ½-½ |
6 | Apr 22, 1966 | D41 Queen's Gambit Declined, Semi-Tarrasch, 5.cd | |
| Spassky, B | Petrosian, T | 0-1 |
7 | Apr 25, 1966 | D03 Torre attack (Tartakower variation) | |
| Petrosian, T | Spassky, B | ½-½ |
8 | Apr 27, 1966 | A33 English, symmetrical variation | |
| Spassky, B | Petrosian, T | ½-½ |
9 | Apr 29, 1966 | D42 Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 | |
| Petrosian, T | Spassky, B | 1-0 |
10 | May 02, 1966 | E66 King's Indian, fianchetto, Yugoslav Panno | |
| Spassky, B | Petrosian, T | ½-½ |
11 | May 04, 1966 | C10 French, Paulsen variation | |
| Petrosian, T | Spassky, B | ½-½ |
12 | May 06, 1966 | A42 Modern defence, Averbakh system | |
| Spassky, B | Petrosian, T | 1-0 |
13 | May 11, 1966 | B19 Caro-Kann, classical, 7...Nd7 | |
| Petrosian, T | Spassky, B | ½-½ |
14 | May 13, 1966 | A05 Reti opening | |
| Spassky, B | Petrosian, T | ½-½ |
15 | May 16, 1966 | B25 Sicilian, closed | |
| Petrosian, T | Spassky, B | ½-½ |
16 | May 18, 1966 | B06 Robatsch (modern) defence | |
| Spassky, B | Petrosian, T | ½-½ |
17 | May 20, 1966 | B25 Sicilian, closed | |
| Petrosian, T | Spassky, B | ½-½ |
18 | May 23, 1966 | E12 Queen's Indian defence | |
| Spassky, B | Petrosian, T | 1-0 |
19 | May 27, 1966 | C11 French defence | |
| Petrosian, T | Spassky, B | 1-0 |
20 | May 30, 1966 | E59 Nimzo-Indian, 4.e3, main line | |
| Spassky, B | Petrosian, T | ½-½ |
21 | Jun 01, 1966 | C13 French, classical | |
| Petrosian, T | Spassky, B | 1-0 |
22 | Jun 03, 1966 | A40 Queen's pawn | |
| Spassky, B | Petrosian, T | 1-0 |
23 | Jun 06, 1966 | C13 French, classical | |
| Petrosian, T | Spassky, B | ½-½ |
24 | Jun 08, 1966 | E61 King's Indian defence, 3.Nc3 | |
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