Mikhail Botvinnik vs Donner, Jan Hein

[Event "Munich olm prel"]
[Site "Munich"]
[Date "1958.??.??"]
[Round "1"]
[White "Botvinnik, Mikhail"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.Qd2 Nc6
9.e4 Nb6 10.Bb5 Bd7 11.Ne2 Na5 12.Rb1 Rc8 13.Bd3 Ba4 14.O-O O-O 15.dxc5 Nd7
16.Nd4 Nxc5 17.Be2 Qf6 18.Qe3 Rfd8 19.Bb2 Qg6 20.c4 b6 21.Bc3 Nc6 22.Rb2 Nxd4
23.Bxd4 f6 1/2-1/2