[Event "Madrid zt"]
[Site "Madrid"]
[Date "1960.??.??"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "E31"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3 exd5 8.cxd5 Nbd7
9.Bd3 Qa5 10.Ne2 Nxd5 11.O-O Bxc3 12.bxc3 Nxc3 13.Nxc3 Qxc3 14.Be2 O-O 15.Qxd6 a6
16.Rfd1 Re8 17.Rac1 Qb2 18.Bc4 Qe5 19.Qg6 Rf8 20.Bg3 Qg5 21.Qe4 Nf6 22.Qe7 Bg4
23.Bf4 Qh4 24.f3 b5 25.Bf1 Rfe8 26.Qxc5 Be6 27.a3 Nd5 28.Bg3 Qg5 29.Bf2 Qf6
30.Qd4 Qxd4 31.Rxd4 Rec8 32.Rxc8+ Rxc8 33.e4 Nc3 34.Rd6 a5 35.Be1 b4 36.axb4 axb4
37.Ba6 Rc5 38.Rb6 b3 39.Bxc3 Rxc3 40.Kf2 Rc2+ 41.Kg3 Rd2 42.Bb7  1/2-1/2

