[Event "Leiden"]
[Site "Leiden"]
[Date "1970.??.??"]
[Round "4"]
[White "Larsen, Bent"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "C90"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O
9.a3 h6 10.d4 Re8 11.Nbd2 Bf8 12.Ba2 Bd7 13.Qb3 Qe7 14.Qc2 g6 15.b4 Kh7 16.Bb2 Bg7
17.d5 Nd8 18.c4 bxc4 19.Nxc4 Nb7 20.Rac1 Rec8 21.Bb3 a5 22.Bc3 a4 23.Ba2 Bb5
24.Ne3 c6 25.dxc6 Bxc6 26.Nd2 Nd8 27.Qd3 Ne6 28.g3 Rab8 29.h4 Nd4 30.Bxd4 exd4
31.Nd5 Qd7 32.Qf3 Bxd5 33.exd5 Ng4 34.Nc4 Kg8 35.h5 gxh5 36.Bb1 Re8 37.Bf5 Rxe1+
38.Rxe1 Qc7 39.Bd3 Qd7 40.Qf4 Rd8 41.Kg2 Ne5 42.Nb2 Qc7 43.Rc1 Qb7 44.Qe4 Rc8
45.Nc4 Nxc4 46.Rxc4 Rxc4 47.Qe8+ Bf8 48.Bxc4 Qe7 49.Qxa4 Qe4+ 50.f3 Qe3 51.Qb3 Qd2+
52.Kf1 Qc1+ 53.Kf2 h4 54.gxh4 Be7 55.Ke2 Bxh4 56.a4 Be1 57.Kd3 Qe3+ 58.Kc2 Qd2+
59.Kb1 Qxb4 60.Qxb4 Bxb4 61.Kc2 Kg7 62.Kd3 Bc3 63.Ke4 Kg6 64.f4 f5+ 65.Kf3 Kf6
66.Bf1 Bd2 67.Bh3 h5 68.Bf1 h4 69.Bd3 h3 70.Kf2 Be3+ 71.Kf1 Ke7 72.a5 Kd8
73.Bxf5 h2 74.Kg2 Bxf4  1/2-1/2

