[Event "West Berlin"] [Site "West Berlin"] [Round "12"] [White "Ulf Andersson"] [Black "Jan Hein Donner"] [Result "1/2-1/2"] [ECO "B50"] [Opening "Sicilian: 2.Nf3 d6 3.Nc3"] 1.e4 c5 2.Nf3 d6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 Nf6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.Be2 b5 11.Bxf6 Nxf6 12.e5 Bb7 13.exf6 Bxf3 14.Bxf3 Bxf6 15.Bxa8 Bxd4 16.Rxd4 d5 17.Bxd5 exd5 18.Re1+ Kf8 19.Re5 g6 20.Nxd5 Qb8 21.Rde4 Kg7 22.f5 gxf5 23.Rxf5 Rd8 24.Rg4+ Kh8 25.Rh4 Qa7 26.b3 Kg7 27.Rg4+ Kh8 28.Rh4 Rd6 29.Kb2 Qd7 30.Rhh5 Kg7 31.g4 Rg6 32.h3 Rd6 33.a3 h6 34.b4 Qc6 35.Re5 Qc4 36.Nc3 Qf1 37.Rd5 Re6 38.Rd7 Qg2 39.Nd5 Rc6 40.Ne3 Qf2 41.Nf5+ Kh8 42.Nd4 Rf6 43.Re5 Kh7 44.Re8 Qd2 45.Re2 Qd1 46.Ree7 Qf1 47.h4 Qf4 48.g5 hxg5 49.hxg5 Qxg5 50.Rxf7+ Rxf7 51.Rxf7+ Kg8 52.Rf8+ Kh7 53.c3 Qg2+ 54.Nc2 Qg6 55.Rf2 Kg7 56.Nd4 Qg1 57.Rf5 Kg6 58.Re5 Kf7 59.Re2 Qf1 60.Rd2 Qe1 61.Rh2 Qd1 62.Nb3 Qd6 63.Re2 Qc6 64.Nc5 Qd6 65.a4 bxa4 66.Nxa4 Qd3 67.Rf2+ Ke7 68.Nc5 Qc4 69.Nb3 Qd3 70.Rd2 Qf1 71.Nc5 Qc4 72.Nb3 Qf1 73.Rd4 Qe2+ 74.Nd2 Qg2 75.Kb3 Qh1 76.Nc4 Qb1+ 77.Nb2 Qf1 78.Rd1 Qe2 79.Ra1 Kd7 80.Nc4 Kc7 81.Rg1 Kb8 82.Ra1 Kb7 83.Na5+ Kc7 84.Rc1 Qd3 85.Kb2 Qe2+ 86.Rc2 Qf1 87.Nb3 Qc4 88.Rg2 Qf1 89.Rd2 Qe1 90.Rd4 Qe2+ 91.Ka3 Qc2 92.c4 Qc3 93.Rg4 Qc2 94.Rg7+ Kb8 95.c5 Qc4 96.Rb7+ Kc8 97.Rb6 Qd3 98.Rd6 Qf1 99.Rd2 Kc7 100.Rd6 {#d} 1/2-1/2