[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "12"]
[White "Shamkovich, Leonid"]
[Black "Jongsma, Alexander"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "B33"]

1.e4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 e5 6.Ndb5 d6 7.Bg5 a6 8.Bxf6 gxf6
9.Na3 d5 10.Nxd5 Bxa3 11.bxa3 Be6 12.Bc4 Qa5+ 13.Qd2 O-O-O 14.Rd1 Qxa3 15.O-O Rhg8
16.Qe3 Qxe3 17.fxe3 Rg4 18.Bd3 f5 19.Nf6 Rh4 20.exf5 Bxa2 21.Be4 Bc4 22.Rxd8+ Kxd8
23.Rd1+ Kc8 24.g3 Rh6 25.Ng8 Rh5 26.h4 Kc7 27.Kf2 a5 28.Ra1 f6 29.Nxf6 Rh6
30.Nd5+ Bxd5 31.Bxd5 b6 32.Kf3 Nb4 33.Be6 Kd6 34.c3 Na6 35.Rd1+ Kc6 36.Ke4 Nc5+
37.Kxe5 b5 38.Rd8 b4 39.cxb4 axb4 40.Rb8 b3 41.Kd4 Nxe6+ 42.fxe6 Rxe6 43.Rxb3 h5
44.e4 Rg6 45.Ke5 Rg4 46.Rd3 Kc7 47.Kf5  1-0

