[Event "Zuerich"]
[Site "Zuerich"]
[Date "1961.??.??"]
[Round "6"]
[White "Kupper, Josef"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "C73"]
[Opening "Ruy Lopez: Morphy Defense, Modern Steinitz Defense"]
[PlyCount "82"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.Be3 Rb8 8.b3 Ne7 9.Nc3 Ng6 10.Qd3 Be7 11.O-O-O a5 12.h4 Bd7 13.h5 Nf8 14.Nh4 a4 15.f4 axb3 16.cxb3 Ne6 17.d5 cxd5 18.exd5 Nxf4 19.Bxf4 exf4 20.h6 g5 21.Ng6 Kf7 22.Nxh8+ Qxh8 23.Qd4 f5 24.Qxh8 Rxh8 25.Rd4 Rc8 26.Rc4 c5 27.dxc6 Be6 28.Rb4 Rxc6 29.Kd2 Bf6 30.Ne2 Bd5 31.Rg1 Be4 32.Rc4 Rxc4 33.bxc4 Bd8 34.Nc3 Ba5 35.Rc1 Bxg2 36.Kd3 Ke6 37.a4 g4 38.c5 dxc5 39.Ne2 Be4+ 40.Kc4 f3 41.Nf4+ Kf6 0-1