[Event "Lone Pine"] [Site "Lone Pine, CA USA"] [Date "1978.04.05"] [Round "4"] [White "Rubens A Filguth"] [Black "Herman Claudius van Riemsdijk"] [Result "1/2-1/2"] [ECO "B40"] [Opening "Sicilian: Open, 2...e6, 4.Nxd4"] 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Bd3 Qb6 6.Nb3 Nc6 7.O-O Be7 8.c4 Ne5 9.Nc3 a6 10.Bf4 d6 11.Rc1 Nfd7 12.Be3 Qc7 13.f4 Nxd3 14.Qxd3 b6 15.Bd4 O-O 16.Rf3 Bb7 17.Rh3 Rfd8 18.Nd2 Bf6 19.Nf3 Bxd4+ 20.Nxd4 Rac8 21.b3 b5 22.cxb5 Nc5 23.Qe3 Nxe4 24.bxa6 Ba8 25.Nde2 Nf6 26.Nd5 Bxd5 27.Rxc7 Rxc7 28.Qb6 Rcc8 29.Rc3 Rb8 30.Qa5 h6 31.b4 Be4 32.a7 Ra8 33.b5 Nd5 34.Rc1 Rd7 35.b6 Nxb6 36.Qxb6 Rdxa7 37.Nc3 Rb7 38.Qxd6 Rc8 39.Qd2 Rbc7 40.Ne2 Rxc1+ 41.Nxc1 Rc2 42.Qe3 Rxg2+ 43.Kf1 Bd5 44.a4 Rxh2 45.a5 h5 46.Qc3 h4 47.f5 h3 48.Qc7 Rh1+ 49.Kf2 Rxc1 50.Qd8+ Kh7 51.Qh4+ Kg8 52.Qd8+ Kh7 53.Qh4+ Kg8 54.Qxh3 Rc2+ 55.Ke1 Ra2 56.Qh4 f6 57.Qd4 Rxa5 58.fxe6 Rb5 59.Qa4 Bc6 60.Qc4 Re5+ 61.Kf2 Bd5 62.Qc8+ Kh7 63.e7 Rxe7 64.Qf5+ Kh6 65.Qxd5 Re5 {#d} 1/2-1/2