[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.10"]
[Round "1"]
[White "Sosonko, Gennadi"]
[Black "Enklaar, Bertus"]
[Result "1-0"]
[BlackElo "2410"]
[EventDate "1973.09.10"]
[PlyCount "129"]
[ECO "A44"]

1.d4 Nf6 2.Nf3 c5 3.d5 d6 4.Nc3 e5 5.e4 Be7 6.Be2 O-O 7.O-O Ne8 8.Nd2 Bg5 
9.Nc4 Bxc1 10.Qxc1 Nd7 11.a4 b6 12.a5 Rb8 13.Nb5 Qh4 14.Nbxd6 Nxd6 15.Nxd6
bxa5 16.Rxa5 Rb6 17.g3 Qh3 18.Nf5 Nf6 19.Ne7+ Kh8 20.Nxc8 Rxc8 21.f3 Nh5 
22.Rf2 Nxg3 23.Bf1 Nxf1 24.Qxf1 Qd7 25.b3 Qc7 26.Qa1 Rb7 27.Ra6 Qe7 28.Rg2
c4 29.d6 Qh4 30.b4 Qf4 31.Qc3 h5 32.Qd2 Qxd2 33.Rxd2 c3 34.Rd5 f6 35.Rc5 
Rd8 36.Rxc3 Rxb4 37.Rc7 Rb1+ 38.Kf2 Rb2 39.Ke3 Kh7 40.Raxa7 Rxd6 41.Rxg7+ 
Kh8 42.Rh7+ Kg8 43.Rag7+ Kf8 44.Rc7 Kg8 45.Rxh5 Rb1 46.Rh6 Rg1 47.Rh3 Rh1 
48.Rg3+ Kf8 49.Rh3 Kg8 50.Rg3+ Kf8 51.Rg2 Rf1 52.Rf2 Rg1 53.c3 Re1+ 54.Re2
Rf1 55.Ra2 Rfd1 56.Ra8+ Rd8 57.Rxd8+ Rxd8 58.f4 exf4+ 59.Kxf4 Rd2 60.h4 
Rf2+ 61.Kg4 Rg2+ 62.Kf5 Rf2+ 63.Kg6 Rf4 64.h5 Rxe4 65.h6 1-0

[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.11"]
[Round "2"]
[White "Zuidema, Coenraad"]
[Black "Sosonko, Gennadi"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[EventDate "1973.09.10"]
[PlyCount "95"]
[ECO "B67"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 b5 10.Bxf6 gxf6 11.Nxc6 Bxc6 12.Qe3 Qe7 13.Bd3 h5 14.Rhf1 Bh6 15.
Kb1 h4 16.Qh3 O-O-O 17.f5 Kb8 18.Ne2 Rdg8 19.fxe6 fxe6 20.Qxh4 Rxg2 21.
Qxf6 Qxf6 22.Rxf6 Bg7 23.Rxe6 Be5 24.Ng3 Rgxh2 25.Nf1 Rh1 26.c3 Rg8 27.Ne3
Rxd1+ 28.Nxd1 Rg1 29.Kc2 Rg2+ 30.Kb3 Rd2 31.Bc2 a5 32.Ne3 Bf4 33.Nf5 a4+ 
34.Ka3 Bd7 35.Re7 Bxf5 36.exf5 Rxc2 37.f6 d5 38.Re6 Bc1 39.Rb6+ Kc7 40.
Rxb5 Kc6 41.Kxa4 Rf2 42.Rb8 Rxf6 43.Rc8+ Kb6 44.Rd8 Rf5 45.c4 dxc4 46.Kb4 
Rf4 47.b3 Kc7 48.Rd1 1/2-1/2

[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.12"]
[Round "3"]
[White "Enklaar, Bertus"]
[Black "Zuidema, Coenraad"]
[Result "0-1"]
[WhiteElo "2410"]
[BlackElo "2430"]
[EventDate "1973.09.10"]
[PlyCount "102"]
[ECO "C95"]

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.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.Nf1 Bf8 14.Ng3 g6 15.a4 c5 
16.d5 c4 17.Bg5 h6 18.Be3 Nc5 19.Qd2 Kh7 20.Ra3 Rb8 21.Rea1 Bc8 22.axb5 
axb5 23.Qc1 Re7 24.Ra7 Rxa7 25.Rxa7 Nfd7 26.Qa1 Qb6 27.Nd2 Rb7 28.Ra8 Qc7 
29.Ne2 Nb6 30.Ra3 f5 31.f3 f4 32.Bf2 Nd3 33.b4 Nxf2 34.Kxf2 Be7 35.Ra6 Bd7
36.Nf1 Bd8 37.Ng1 Nc8 38.Ne2 Ra7 39.Ke1 Qb6 40.Rxa7 Nxa7 41.Qa5 Qxa5 42.
bxa5 Bxa5 43.Nd2 h5 44.Kd1 Bb6 45.Bb1 Kh6 46.Ba2 Kg5 47.Ke1 Bc5 48.Kf1 Nc8
49.Ke1 Nb6 50.Kd1 Kh4 51.Kc2 Bxh3 0-1

[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.13"]
[Round "4"]
[White "Enklaar, Bertus"]
[Black "Sosonko, Gennadi"]
[Result "1-0"]
[WhiteElo "2410"]
[EventDate "1973.09.10"]
[PlyCount "157"]
[ECO "B36"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 
Bg7 9.O-O O-O 10.Bg5 Qa5 11.Bd2 Be6 12.b3 Qc5 13.Qd3 Bg4 14.Rac1 Bxe2 15.
Qxe2 a6 16.Rfd1 Qh5 17.Qxh5 Nxh5 18.Nd5 Rae8 19.Bg5 f6 20.Bd2 f5 21.exf5 
gxf5 22.Bc3 Kf7 23.Bxg7 Nxg7 24.Rc3 Rc8 25.a4 Rc6 26.a5 Rd8 27.Rh3 h5 28.
Nb6 Rc5 29.b4 Re5 30.Kf1 Rg8 31.Rh4 Rh8 32.c5 Ne8 33.Nc4 Re6 34.Rd5 Kg6 
35.cxd6 Nxd6 36.Nxd6 Rxd6 37.Rxd6+ exd6 38.Rc4 Rh7 39.Ke2 Kf6 40.Kd3 Ke5 
41.Rh4 Kf6 42.g3 b6 43.axb6 Rb7 44.Rxh5 Rxb6 45.Rh6+ Kg5 46.Rh4 Rb5 47.Rd4
d5 48.h4+ Kf6 49.Rf4 Ke5 50.h5 a5 51.bxa5 Rxa5 52.h6 Ra3+ 53.Kc2 Ra2+ 54.
Kb3 Ra8 55.h7 Rh8 56.Rh4 f4 57.gxf4+ Ke4 58.Kc3 Rc8+ 59.Kd2 Rh8 60.f3+ Kf5
61.Kd3 Kf6 62.Kd4 Kg7 63.f5 Kf6 64.Kxd5 Kxf5 65.Kd4 Kg5 66.Rh3 Kf4 67.Kd3 
Rd8+ 68.Ke2 Rh8 69.Kf2 Kg5 70.Kg3 Kf5 71.Rh5+ Kf6 72.Kg4 Kg6 73.Rh1 Kf6 
74.Rh6+ Kg7 75.Kg5 Kf7 76.f4 Kg7 77.f5 Kf7 78.Ra6 Kg7 79.Ra7+ 1-0

[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.14"]
[Round "5"]
[White "Sosonko, Gennadi"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[BlackElo "2430"]
[EventDate "1973.09.10"]
[PlyCount "77"]
[ECO "E05"]

1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Be7 5.g3 O-O 6.Bg2 dxc4 7.O-O c5 8.dxc5 
Nc6 9.Qa4 Qa5 10.Qxc4 Qxc5 11.Qxc5 Bxc5 12.Bf4 Bd7 13.Rac1 Rac8 14.Nb5 Na5
15.Bd6 Bxd6 16.Nxd6 Rc6 17.Rxc6 Bxc6 18.b4 Rd8 19.Nxf7 Kxf7 20.bxa5 Ke7 
21.Rc1 a6 22.e3 Ne8 23.h4 Kf6 24.Nd4 Bxg2 25.Kxg2 Rd5 26.Nb3 Nd6 27.Rc7 
Rb5 28.g4 h6 29.f4 g5 30.fxg5+ hxg5 31.h5 Nf7 32.Kg3 Nh6 33.Nc5 Rb4 34.e4 
Rb1 35.Rh7 Nf7 36.Nd7+ Ke7 37.Ne5 Kf6 38.Nxf7 Rg1+ 39.Kf2 1-0

[Event "29th NED-ch playoff"]
[Site "Leeuwarden NED"]
[Date "1973.09.15"]
[Round "6"]
[White "Zuidema, Coenraad"]
[Black "Enklaar, Bertus"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2410"]
[EventDate "1973.09.10"]
[PlyCount "117"]
[ECO "B85"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.Be2 Nf6 7.O-O Be7 8.Be3 
O-O 9.f4 a6 10.Qe1 Nxd4 11.Bxd4 b5 12.a3 Bb7 13.Qg3 g6 14.Bd3 Rc8 15.Kh1 
Re8 16.f5 e5 17.Be3 Qd7 18.Qh3 Rxc3 19.bxc3 Nxe4 20.c4 Rc8 21.cxb5 axb5 
22.Rae1 Nc3 23.Qh6 Bf8 24.Qg5 Be7 25.f6 Bf8 26.Bf5 Qc6 27.Bxc8 Qxc8 28.Qh4
h5 29.Bd2 Qc6 30.Rf2 Na4 31.Bb4 Nb6 32.Re3 Nc4 33.Rg3 Qe4 34.Qxh5 Nxa3 35.
Qg4 Nxc2 36.Qxe4 Bxe4 37.Rg4 Bd3 38.Bc3 e4 39.Rg3 d5 40.Rd2 b4 41.Rgxd3 
exd3 42.Be5 d4 43.Rxd3 Bc5 44.Kg1 Kf8 45.Kf2 Ke8 46.Ke2 Kd7 47.Kd2 Ke6 48.
Kxc2 Kxe5 49.Rf3 Ke4 50.h4 Bd6 51.Rb3 Be5 52.Rxb4 Bxf6 53.Rb7 Bxh4 54.Rxf7
Ke3 55.Kd1 g5 56.Rf3+ Ke4 57.Ke2 g4 58.Rf8 d3+ 59.Kd1 1/2-1/2
