[Event "Teesside"] [Site "Thornaby-on-Tees ENG"] [Date "1972.05.02"] [Round "13"] [White "Ulf Andersson"] [Black "Georgi Tringov"] [Result "1/2-1/2"] [ECO "B90"] [Opening "Sicilian: Najdorf"] 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Nbd7 7.f4 g6 8.O-O Bg7 9.a4 b6 10.Bf3 e5 11.Nb3 Qc7 12.f5 Bb7 13.g4 h6 14.fxg6 fxg6 15.g5 hxg5 16.Bxg5 O-O 17.Qd3 Nc5 18.Nxc5 dxc5 19.Qc4+ Kh8 20.Rad1 Nh7 21.Be3 Rf7 22.Bg4 Rxf1+ 23.Rxf1 Rf8 24.a5 Rxf1+ 25.Kxf1 bxa5 26.Qxc5 Qf7+ 27.Kg2 Nf6 28.Bf3 Nh5 29.Qxa5 Nf4+ 30.Bxf4 exf4 31.Qd8+ Kh7 32.Qh4+ Kg8 33.Qd8+ Kh7 34.Qh4+ Kg8 35.Nd5 Bxd5 36.exd5 Qf5 37.Qd8+ Kh7 38.Qh4+ Kg8 39.Qd8+ Kh7 40.Qc7 Qe5 41.Qxe5 Bxe5 42.c3 Kg7 43.Be2 a5 44.Kf3 Kf6 45.Ke4 a4 46.h4 a3 47.bxa3 Bxc3 48.Kxf4 Bd2+ 49.Kg4 Ke5 50.Bf3 Bc1 51.a4 Bd2 52.Bg2 Kf6 53.Be4 Bb4 54.Bc2 Bd2 55.Bd3 Bb4 56.Bb1 Bd2 57.Bc2 Bb4 58.Kf4 Be1 59.Bb3 Bd2+ 60.Kg4 Ke5 61.Ba2 Bb4 62.Kg5 Be7+ 63.Kxg6 Bxh4 64.Kf7 Kd6 65.a5 Bd8 66.a6 Bb6 67.Ke8 Kc7 68.Ke7 Bc5+ 69.Ke6 Kb6 {#d} 1/2-1/2