[Event "Clare Benedict Cup 12th"]
[Site "Berlin West FRG"]
[Date "1965.04.06"]
[EventDate "1965.04.04"]
[Round "3"]
[Result "1/2-1/2"]
[White "Marcel Markus"]
[Black "Coenraad Zuidema"]
[ECO "C46"]
[WhiteElo "?"]
[BlackElo "?"]
[Source "Olimpbase"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 4.Bc4 Bg7 5.O-O d6 6.d3 Nf6 7.Bg5
h6 8.Be3 O-O 9.a3 Qe7 10.h3 Be6 11.Nd5 Bxd5 12.exd5 Nb8 13.Qd2
Kh7 14.Rae1 Ng8 15.Nh2 f5 16.f4 Nd7 17.b4 Qf7 18.Bb3 Rae8
19.Nf3 Ngf6 20.c4 exf4 21.Bxf4 Nh5 22. Bh2 b6 23.Rxe8 Rxe8
24.g4 Nhf6 25.gxf5 gxf5 26.Nh4 Ne5 27.Qf4 Qh5 28.Qxf5+ Ng6
29.Qxg6+ Qxg6+ 30.Nxg6 Kxg6 31.c5 bxc5 32.bxc5 Bf8 33.Bc4 Rb8
34.Kg2 Rb2+ 35.Rf2 Rxf2+ 36.Kxf2 Nd7 37.d4 dxc5 38.Bxc7 cxd4
39.Bb5 Nf6 40.Bd3+ Kf7 41.d6 1/2-1/2