- Place: Prague
- Year: 1970
- 12 games
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Cross table
| Player | 1 | 2 | 3 | 4 | Points | |
|---|---|---|---|---|---|---|
| 1 | Portisch, Lajos | ½ ½ | 1 ½ | ½ 1 | 4 | |
| 2 | Ivkov, Borislav | ½ ½ | 1 0 | ½ 1 | 3½ | |
| 3 | Smejkal, Jan | 0 ½ | 0 1 | 0 1 | 2½ | |
| 4 | Andersson, Ulf | ½ 0 | ½ 0 | 1 0 | 2 |
with Whitewith Black
Standings
| Place | Player | Elo | Games | + = − | Points | % |
|---|---|---|---|---|---|---|
| 1 | Portisch, Lajos | – | 6 | +2 =4 −0 | 4 | 67 % |
| 2 | Ivkov, Borislav | – | 6 | +2 =3 −1 | 3½ | 58 % |
| 3 | Smejkal, Jan | – | 6 | +2 =1 −3 | 2½ | 42 % |
| 4 | Andersson, Ulf | – | 6 | +1 =2 −3 | 2 | 33 % |
The 12 games
| Round | White | Black | Result | ECO | Moves |
|---|---|---|---|---|---|
| Smejkal, Jan | Andersson, Ulf | 0-1 | A53 | 29 | |
| Andersson, Ulf | Ivkov, Borislav | 1/2-1/2 | B82 | 53 | |
| Andersson, Ulf | Smejkal, Jan | 0-1 | C73 | 35 | |
| Andersson, Ulf | Portisch, Lajos | 1/2-1/2 | C85 | 28 | |
| Smejkal, Jan | Ivkov, Borislav | 0-1 | C87 | 40 | |
| Ivkov, Borislav | Smejkal, Jan | 0-1 | C88 | 24 | |
| Smejkal, Jan | Portisch, Lajos | 0-1 | C91 | 73 | |
| Ivkov, Borislav | Portisch, Lajos | 1/2-1/2 | C95 | 18 | |
| Portisch, Lajos | Ivkov, Borislav | 1/2-1/2 | D37 | 56 | |
| Portisch, Lajos | Smejkal, Jan | 1/2-1/2 | D77 | 12 | |
| Portisch, Lajos | Andersson, Ulf | 1-0 | E51 | 51 | |
| Ivkov, Borislav | Andersson, Ulf | 1-0 | E92 | 40 |