[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "3"]
[White "Petrosian, Tigran V"]
[Black "Spassky, Boris V"]
[Result "1/2-1/2"]
[WhiteElo "2640"]
[BlackElo "2655"]
[ECO "D36"]

1.c4 e6 2.d4 d5 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Na6 7.e3 Nb4 8.Qd2 Bf5
9.Rc1 a5 10.a3 Na6 11.Nge2 Be7 12.Nf4 O-O 13.Bd3 Bxd3 14.Nxd3 Nd7 15.Bxe7 Qxe7
16.O-O Nb6 17.Rfe1 Nc4 18.Qd1 f5 19.Nb1 Nc7 20.a4 Na6 21.Nd2  1/2-1/2

