[Event "15th olm final A"]
[Site "Varna BUL"]
[Date "1962.10.04"]
[Round "7"]
[White "Donner, Jan NED"]
[Black "Portisch, Lajos HUN"]
[Result "1/2-1/2"]
[ECO "D29"]
[EventDate "1962.09.16"]
[PlyCount "75"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 
9.Rd1 Nbd7 10.Nc3 Qb8 11.d5 Nxd5 12.Nxd5 Bxd5 13.Bxd5 exd5 14.Rxd5 Be7 15.
e4 Qb7 16.Bg5 Nb6 17.Bxe7 Nxd5 18.Bxc5 Nf4 19.Qe3 Ne6 20.Bd6 f6 21.Qb3 Kf7
22.e5 Rhe8 23.Re1 Rad8 24.g3 Qc6 25.Bb4 Qd5 26.Qxd5 Rxd5 27.exf6 gxf6 28.
Rc1 Ra8 29.Rc6 Rd1+ 30.Kg2 Rd3 31.Bc3 Ra7 32.a3 Rd5 33.Rb6 Ke7 34.Nd2 f5 
35.Nf3 a5 36.Ne5 Nd8 37.Rh6 Ke8 38.f4 1/2-1/2

