9th European Go Congress 1965
Mnosek pod Brdy, Czechoslovakia, 25.07.1965-07.08.1965 

Championship Tournament
                                Mat Reb Due Eka Mac Vri Wim Vuk Koc  Pt
1 Juergen Mattern       Ger 3d    X   0   0   1   1   1   1   1   1   6
2 Max Rebattu           Nld 3d    1   X   0   0   1   1   1   1   1   6
3 Juergen Dueball       Ger 3d    1   1   X   1   1   1   0   0   1   6
4 Eduard Ekart          Yug 3d    0   1   0   X   0   1   0   1   1   4
5 Machata               Aut 3d    0   0   0   1   X   0   1   1   1   4
6 Henk de Vries         Nld 3d    0   0   0   0   1   X   1   1   1   4
7 Manfred Wimmer        Aut 3d    0   0   1   1   0   0   X   1   1   4
8 Vuksanovic            Yug 3d    0   0   1   0   0   0   0   X   1   2
9 Kocandrle             Cze 3k    0   0   0   0   0   0   0   0   X   0

If the first play-off Mattern beat Dueball, Rebattu beat Mattern, Dueball beat Rebattu.
In the second play-off in Berlin Mattern won both games (and Rebattu beat Dueball).
So Mattern was the Champion.