[Event "18th olm qual. group 4"]
[Site "Lugano SUI"]
[Date "1968.10.22"]
[Round "5"]
[White "Casa, Alexander MNC"]
[Black "Portisch, Lajos HUN"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1968.10.17"]
[PlyCount "81"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.a3 Bb7 7.Be3 d6 8.Bd3 Nf6 
9.O-O Nbd7 10.f4 Rc8 11.Qe2 Be7 12.Kh1 O-O 13.Bg1 Nc5 14.e5 dxe5 15.fxe5 
Nfd7 16.Nf3 Nxd3 17.cxd3 Nc5 18.Rad1 Qd7 19.d4 Na4 20.Nxa4 bxa4 21.Rc1 Qb5
22.Qxb5 axb5 23.Be3 Bd5 24.Bd2 Bc4 25.Rfe1 Rfd8 26.Bc3 h6 27.Kg1 Rd7 28.
Kf2 Bd8 29.Rcd1 Bb6 30.Rd2 Kh7 31.h4 Bd5 32.h5 Rcd8 33.Red1 f6 34.Kg3 Bc7 
35.Kf4 Rf7 36.Ke3 Rg8 37.Nh4 Bb6 38.Rf2 Rc8 39.Ng6 Rcc7 40.Rdf1 Bc4 41.Rd1
1/2-1/2

