[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Donner, Jan"]
[Black "Muehring, Willem"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "59"]
[ECO "E61"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.b3 Re8 
9.e3 exd4 10.Nxd4 Nc5 11.Qc2 a5 12.Ba3 c6 13.Rad1 Qc7 14.Rfe1 a4 15.b4 Ne6
16.Bc1 Qb6 17.b5 Nxd4 18.exd4 Bg4 19.Rxe8+ Nxe8 20.Re1 Bxd4 21.Nxa4 Qa5 
22.Bd2 Qxa4 23.Rxe8+ Kg7 24.Bh6+ Kxh6 25.Qd2+ g5 26.Rxa8 Qxa8 27.Qxd4 Bf5 
28.Qf6+ Bg6 29.h4 gxh4 30.g4 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Henneberke, Franciscus"]
[Black "Stumpers, Louis"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "94"]
[ECO "A12"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 Bf5 4.O-O e6 5.d3 h6 6.Nbd2 Nbd7 7.c4 c6 8.b3 Bc5 
9.Bb2 O-O 10.Qe1 Bh7 11.e4 dxe4 12.dxe4 Qe7 13.e5 Ne8 14.Ne4 Ba3 15.Bc3 
Nc5 16.Nxc5 Bxc5 17.Rd1 a5 18.Qd2 Nc7 19.Qd7 Rfe8 20.Qxe7 Rxe7 21.Rd2 Bb4 
22.Bxb4 axb4 23.Rfd1 Kf8 24.Ne1 Na6 25.Kf1 Nc5 26.Ke2 Ree8 27.Ke3 Ra5 28.
Bf1 Ne4 29.Rd7 Nc3 30.R1d4 Rxe5+ 31.Kd2 Ne4+ 32.Kd1 Nxf2+ 33.Kd2 Ne4+ 34.
Kd1 Ra5 35.Rxb7 Rxa2 36.Nd3 Rea8 37.Nc1 Nc3+ 38.Ke1 Rc2 39.Ne2 Ne4 40.Bg2 
Ra1+ 41.Rd1 Rxe2+ 42.Kxe2 Nc3+ 43.Ke3 Nxd1+ 44.Kd4 Ra5 45.c5 e5+ 46.Kc4 e4
47.Kd4 Ra8 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Kramer, Haije"]
[Black "Euwe, Machgielis"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "118"]
[ECO "A07"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bf5 4.b3 Nf6 5.Bb2 e6 6.d3 Bb4+ 7.Nbd2 O-O 8.O-O 
Nbd7 9.c4 a5 10.a3 Be7 11.Nh4 Bg6 12.Nxg6 hxg6 13.d4 Qc7 14.Qc2 Rfd8 15.
cxd5 exd5 16.Qc3 Nf8 17.Rfb1 Ne6 18.e3 Qb6 19.Qc2 Ne8 20.Nf3 Nd6 21.Ne5 
Bf6 22.Nd3 Ne4 23.b4 axb4 24.Nxb4 Nd6 25.Nd3 Nc4 26.Bc3 Qc7 27.a4 Be7 28.
Bb4 Bxb4 29.Rxb4 Ra7 30.Nb2 Qa5 31.Qc3 Nxb2 32.Qxb2 b5 33.Rb3 bxa4 34.Rba3
Rda8 35.Rxa4 Qxa4 36.Rxa4 Rxa4 37.Qb7 Ra1+ 38.Bf1 Ng5 39.h4 Ne4 40.Kg2 
R8a2 41.Qb8+ Kh7 42.Qf4 Rxf2+ 43.Qxf2 Nxf2 44.Kxf2 Ra2+ 45.Kf3 Ra3 46.Bh3 
Kg8 47.Kf4 Kf8 48.Bg2 Ke7 49.Bh3 Ra4 50.Kf3 Kf6 51.Bd7 Rc4 52.Ke2 g5 53.h5
Ke7 54.Bf5 Rc1 55.Kf3 c5 56.dxc5 Rxc5 57.g4 Rc3 58.Ke2 Kd6 59.Kd2 Ra3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Orbaan, Constant"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "90"]
[ECO "C68"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 Bb4 6.Nxe5 Qg5 7.Nf3 Qxg2 8.
Rg1 Qh3 9.Rxg7 Bg4 10.Ng1 Bxd1 11.Nxh3 Bxc2 12.f3 Ne7 13.d4 Bd3 14.Bg5 h6 
15.Be3 Bc4 16.Nf4 O-O-O 17.Kf2 Rdg8 18.Rxg8+ Rxg8 19.Nce2 f5 20.a3 Ba5 21.
Rc1 Bf7 22.Rc5 Bb6 23.Re5 Kd7 24.exf5 Re8 25.Nc3 Ng8 26.Ne4 Ba7 27.Nd3 b6 
28.Rxe8 Bxe8 29.Kg3 a5 30.Kf4 a4 31.Ke5 Ke7 32.Nf4 Bb8 33.Ne6 Bd7 34.Ng7 
Kf7 35.f6 c5 36.d5 Bc8 37.Nf5 Kg6 38.Ne7+ Nxe7 39.fxe7 Kf7 40.Bxh6 Kxe7 
41.f4 Bh3 42.f5 Bg2 43.f6+ Ke8 44.Ng5 c6+ 45.d6 Bd5 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Spanjaard, Eduard"]
[Black "Cortlever, Nicolaas"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "49"]
[ECO "D31"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 a5 8.axb5 Bxc3 
9.Bxc3 cxb5 10.b3 Bb7 11.d5 Nf6 12.bxc4 b4 13.Bxf6 Qxf6 14.Qa4+ Nd7 15.Nd4
Ke7 16.d6+ Kxd6 17.Rd1 Rhd8 18.c5+ Nxc5 19.Qb5 Rdc8 20.Nf5+ Ke5 21.Nd6 Qe7
22.Qc4 Nd3+ 23.Qxd3 Bd5 24.Nxc8 Rxc8 25.Qd4+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.17"]
[Round "1"]
[White "Van Scheltinga, Theodore"]
[Black "Van den Berg, Carel"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "E69"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6 
9.h3 exd4 10.Nxd4 a5 11.Be3 Nb6 12.b3 a4 13.Qc2 axb3 14.axb3 Rxa1 15.Rxa1 
Nfd7 16.Rd1 Qf6 17.Nde2 Nc5 18.b4 Ncd7 19.c5 dxc5 20.bxc5 Na8 21.Bd4 Qe7 
22.Bxg7 Kxg7 23.Na4 Nc7 24.Nd4 Re8 25.Nb3 Nf8 26.f4 Rd8 27.Qc3+ Kg8 28.
Rxd8 Qxd8 29.Qd4 Qxd4+ 30.Nxd4 Nb5 31.Nb3 Be6 32.Na5 Nd7 33.e5 Nd4 34.Nxb7
f6 35.exf6 Nxf6 36.Na5 Nd7 37.Nxc6 Nb3 38.Nd8 Nbxc5 39.Nxc5 Nxc5 40.Nxe6 
Nxe6 41.Bd5 Kf7 42.Kf2 Kf6 43.Bxe6 Kxe6 44.Kf3 Kd5 45.Ke3 h5 46.Kd3 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Barendregt, Johan"]
[Black "Spanjaard, Eduard"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "83"]
[ECO "E21"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Qb3 Qe7 6.Bf4 Bxc3+ 7.Qxc3 d6 8.g3 
Bb7 9.Bg2 Nbd7 10.O-O O-O 11.Rad1 Rae8 12.b3 e5 13.Bc1 Ne4 14.Qc2 f5 15.
Bb2 a5 16.Ba1 Ng5 17.dxe5 Nxf3+ 18.exf3 Nxe5 19.f4 Nf3+ 20.Bxf3 Bxf3 21.
Rc1 Qd7 22.Rfe1 Re4 23.Qd3 Rfe8 24.Re3 Rxe3 25.fxe3 Be4 26.Qd4 Re7 27.Kf2 
Qe8 28.h4 Qg6 29.Qd1 Qe6 30.Qe2 Bb7 31.Rg1 Qe4 32.Bb2 Bc6 33.Bd4 h6 34.g4 
fxg4 35.Qxg4 Qc2+ 36.Qe2 Qf5 37.Qg4 Qe4 38.Qe2 Bb7 39.Ba1 Qe6 40.Rg3 Qf5 
41.Qb2 Qf7 42.Qd4 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Cortlever, Nicolaas"]
[Black "Henneberke, Franciscus"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "123"]
[ECO "C49"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 
Qe7 9.Re1 Nd8 10.d4 c6 11.Bd3 b6 12.Nh4 h6 13.Bc1 Bg4 14.f3 Nh7 15.g3 Bh3 
16.Bf1 Bd7 17.a4 Nb7 18.Qd3 Rfd8 19.Bd2 c5 20.f4 Qf6 21.Bg2 Rab8 22.fxe5 
dxe5 23.dxe5 Qe7 24.Qe2 Rbc8 25.Nf5 Qxe5 26.Bf4 Qf6 27.Nxh6+ gxh6 28.e5 
Qe6 29.Bxb7 Rc7 30.Bg2 Bc6 31.Bxc6 Rxc6 32.Rad1 Qe7 33.Rd6 Rcxd6 34.exd6 
Qxe2 35.Rxe2 Ng5 36.Kg2 Ne6 37.Bxh6 Rxd6 38.Rd2 Rxd2+ 39.Bxd2 c4 40.Be3 
Nc7 41.Kf3 f5 42.g4 fxg4+ 43.Kxg4 Nd5 44.Bd4 a6 45.Kf5 b5 46.axb5 axb5 47.
Ke5 Ne7 48.Kd6 Kf7 49.Kc5 Ke6 50.Kxb5 Kd5 51.h4 Ng6 52.h5 Nf8 53.h6 Nh7 
54.Bg7 Ng5 55.Kb6 Kd6 56.Bf8+ Kd5 57.Ba3 Nh7 58.Kc7 Nf6 59.Be7 Nh7 60.Kd7 
Ke5 61.Kc6 Ke6 62.Ba3 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Kramer, Haije"]
[Black "Van Scheltinga, Theodore"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "B19"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.Bd3 
Bxd3 9.Qxd3 e6 10.Bd2 Qb6 11.O-O-O O-O-O 12.Qe2 Ngf6 13.Ne5 Nxe5 14.dxe5 
Nd7 15.f4 Be7 16.Ne4 Nc5 17.Be3 Qa5 18.Bxc5 Bxc5 19.Kb1 Be7 20.c4 Rxd1+ 
21.Rxd1 Rd8 22.h5 Qb4 23.Rxd8+ Kxd8 24.Qd2+ Qxd2 25.Nxd2 f5 26.exf6 gxf6 
27.f5 exf5 28.Nf3 Kd7 29.Nd4 Bf8 30.Kc2 Kd6 31.Nf3 f4 32.Kd3 f5 33.Nh4 Ke6
34.Ng6 Bd6 35.Nh4 Be7 36.Nf3 Bf6 37.b3 Kd6 38.Ne1 Kc5 39.Nc2 a5 40.Ke2 Bh4
41.Kd3 Bf6 42.Ke2 b5 43.cxb5 cxb5 44.Kd3 Be5 45.Ke2 Bc3 46.Kf3 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Muehring, Willem"]
[Black "Euwe, Machgielis"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "96"]
[ECO "E25"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 Nxd5 8.Qd2 
Qa5 9.Bb2 Nb6 10.e3 Na4 11.Rb1 Nxb2 12.Qxb2 Nc6 13.Kf2 O-O 14.Bb5 Qc7 15.
Ne2 Na5 16.dxc5 Qxc5 17.Qb4 Qc7 18.Rhd1 b6 19.Qh4 e5 20.Qb4 Be6 21.Rd6 Nb7
22.Rd2 Nc5 23.Ng3 Rac8 24.Be2 f5 25.Bc4 Bxc4 26.Qxc4+ Qf7 27.Qxf7+ Rxf7 
28.Rbd1 g6 29.Ne2 Kg7 30.Rd8 Rxd8 31.Rxd8 Rc7 32.Ke1 Kf6 33.Kd2 Nb7 34.Rd3
Na5 35.Kc2 Nc4 36.Kb3 e4 37.fxe4 fxe4 38.Rd4 Nxe3 39.Rxe4 Nxg2 40.Nd4 Rd7 
41.Kb4 Kg5 42.c4 Nh4 43.Kb5 Nf5 44.Nf3+ Kf6 45.Kc6 Rd3 46.Ne5 Rxa3 47.Nd7+
Kg5 48.Nf8 Rh3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Stumpers, Louis"]
[Black "Donner, Jan"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "60"]
[ECO "D77"]

1.Nf3 d5 2.g3 c5 3.Bg2 g6 4.d4 Nf6 5.O-O Bg7 6.c4 O-O 7.dxc5 dxc4 8.Nc3 
Qa5 9.Qd4 Nc6 10.Qxc4 Be6 11.Qh4 Rad8 12.Ng5 Bc8 13.Nce4 h5 14.Nxf6+ Bxf6 
15.e4 Ne5 16.h3 Kg7 17.a3 Qxc5 18.Be3 Qb5 19.a4 Qa5 20.Rfb1 Nd3 21.b4 Nxb4
22.e5 Bxe5 23.g4 Bxa1 24.gxh5 Nc2 25.hxg6 Rh8 26.Qc4 Nxe3 27.Qxf7+ Kh6 28.
g7 Qxg5 29.gxh8=Q+ Bxh8 30.fxe3 Bxh3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.18"]
[Round "2"]
[White "Van den Berg, Carel"]
[Black "Orbaan, Constant"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "63"]
[ECO "C13"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 Nd7 8.c3
Qe7 9.Bd3 b6 10.Nxf6+ Nxf6 11.Ne5 O-O 12.Qf3 Bd7 13.Qh3 Rfd8 14.O-O c5 15.
Qh4 h6 16.dxc5 Qxc5 17.Rfe1 Be8 18.Re3 Rd5 19.Rae1 Rad8 20.h3 Qc7 21.Bc2 
Rd2 22.Bb3 Rxb2 23.Nc4 Rxb3 24.axb3 Bc6 25.Ne5 Ba8 26.Rg3 Kf8 27.Qb4+ Kg8 
28.Ng4 Nh5 29.Nxh6+ Kh7 30.Qh4 Nxg3 31.Nxf7+ Kg6 32.Nxd8 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Donner, Jan"]
[Black "Cortlever, Nicolaas"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "43"]
[ECO "D96"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 c6 6.cxd5 cxd5 7.Bg5 Nc6 8.e3 e6
9.Ne5 O-O 10.Nxc6 bxc6 11.Be2 Qb6 12.Qa3 a5 13.Na4 Qb4+ 14.Qxb4 axb4 15.
Nc5 Nd7 16.Nd3 b3 17.Bf4 Ba6 18.a3 Bxd3 19.Bxd3 e5 20.dxe5 Nxe5 21.Bxe5 
Bxe5 22.O-O-O 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Euwe, Machgielis"]
[Black "Van Scheltinga, Theodore"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "75"]
[ECO "E68"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6 
9.b3 exd4 10.Nxd4 Nc5 11.f3 Re8 12.Be3 a5 13.Qc2 Nfd7 14.Bf2 Ne5 15.Rad1 
Qe7 16.h3 a4 17.f4 axb3 18.axb3 Ned7 19.b4 Na6 20.b5 Nb4 21.Qb3 c5 22.Nc2 
Bxc3 23.Qxc3 Nxc2 24.Qxc2 Nb6 25.Rfe1 Be6 26.Bf1 f6 27.g4 Ra4 28.e5 dxe5 
29.fxe5 f5 30.Rd6 Rxc4 31.Bxc4 Nxc4 32.Rd3 fxg4 33.Re4 Qf7 34.hxg4 Ra8 35.
Rd1 Nxe5 36.Rxe5 Ra2 37.Qxc5 Qf3 38.Rd8+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Henneberke, Franciscus"]
[Black "Barendregt, Johan"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "D37"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.e3 Be7 5.Nc3 O-O 6.b3 a6 7.Be2 c5 8.dxc5 dxc4 
9.Qxd8 Rxd8 10.Ba3 cxb3 11.axb3 Nbd7 12.c6 Bxa3 13.c7 Rf8 14.Rxa3 Ne8 15.
Nb5 Nb6 16.Nbd4 Nxc7 17.O-O Rd8 18.Rc1 Ncd5 19.Bc4 Bd7 20.Ne5 Be8 21.Bxd5 
Nxd5 22.Ra5 Rac8 23.Rac5 Rxc5 24.Rxc5 Ne7 25.Kf1 Rc8 26.Rxc8 Nxc8 27.Nc4 
Kf8 28.Ke2 Ke7 29.f4 Kd8 30.Kd3 Kc7 31.f5 exf5 32.Nxf5 g6 33.Nh6 Nd6 34.
Ne5 f5 35.g4 Bd7 36.gxf5 Bxf5+ 37.Kd4 Be6 38.b4 b6 39.Nf3 Nf5+ 40.Nxf5 
Bxf5 41.Ng5 h6 42.Nf7 Be6 43.Nh8 g5 44.Ng6 Kc6 45.Nf8 Bf7 46.Nh7 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Muehring, Willem"]
[Black "Stumpers, Louis"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "35"]
[ECO "D45"]

1.d4 Nf6 2.c4 c6 3.Nc3 d5 4.e3 e6 5.Nf3 a6 6.Qc2 c5 7.a3 cxd4 8.exd4 dxc4 
9.Bxc4 b5 10.Be2 Bb7 11.O-O Be7 12.Bg5 Nbd7 13.Ne5 Rc8 14.Qd3 Nxe5 15.dxe5
Qxd3 16.Bxd3 Nd7 17.Bxe7 Kxe7 18.f4 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Orbaan, Constant"]
[Black "Kramer, Haije"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "50"]
[ECO "B24"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 e6 6.Be3 Qa5 7.Ne2 Nd4 8.O-O Ne7 
9.a3 Nec6 10.Rb1 d6 11.b4 Qc7 12.Kh1 O-O 13.Qd2 Bd7 14.f4 f5 15.Ng1 Rab8 
16.Rfc1 b5 17.Nd1 e5 18.c3 Ne6 19.exf5 Rxf5 20.fxe5 Nxe5 21.c4 Ng4 22.Ne2 
Bc6 23.Nf4 Nxf4 24.Bxf4 Be5 25.Bxe5 Rf1# 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.19"]
[Round "3"]
[White "Spanjaard, Eduard"]
[Black "Van den Berg, Carel"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "36"]
[ECO "E29"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 Nc6 7.Bd3 d6 8.Ne2 
O-O 9.e4 Ne8 10.e5 dxe5 11.dxe5 g6 12.f4 b6 13.Ng3 Bb7 14.Ne4 Nxe5 15.Ke2 
Qxd3+ 16.Qxd3 Nxd3 17.Kxd3 Rd8+ 18.Ke3 Nd6 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Barendregt, Johan"]
[Black "Donner, Jan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "83"]
[ECO "C50"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4 d6 5.dxe5 dxe5 6.Qxd8+ Bxd8 7.Be3 Nf6 8.
Nc3 Ng4 9.Bd2 Nd4 10.Nxd4 exd4 11.Nb5 Ne5 12.Bb3 Bd7 13.Nxd4 c5 14.Nf3 
Nxf3+ 15.gxf3 Bf6 16.Bd5 O-O-O 17.O-O-O Be6 18.Be3 b6 19.c4 Rd7 20.Rd2 Re8
21.Rhd1 Rdd8 22.Rd3 g6 23.Ra3 Re7 24.Rad3 Red7 25.Kc2 Kc7 26.Bxe6 fxe6 27.
Rxd7+ Rxd7 28.Rxd7+ Kxd7 29.b3 Kc6 30.Kd3 h5 31.Ke2 Kd7 32.Bh6 Ke8 33.f4 
Bd4 34.Kf3 Bb2 35.Bg5 Kd7 36.Bh4 Bc1 37.Bf6 Bd2 38.Be5 Ke7 39.a4 Be1 40.
Ke2 Bb4 41.Ke3 Be1 42.Kf3 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Cortlever, Nicolaas"]
[Black "Muehring, Willem"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "65"]
[ECO "C50"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6 5.d3 d6 6.Bg5 Na5 7.Bxf6 gxf6 8.Nh4 
Nxc4 9.dxc4 f5 10.Nxf5 Bxf5 11.exf5 Qh4 12.Qf3 Qxc4 13.Qxb7 Kd7 14.Qb3 
Qxb3 15.axb3 Rhg8 16.g3 Rg5 17.Ne4 Rxf5 18.Nxc5+ dxc5 19.Ke2 a5 20.Ra4 Kc6
21.Rh4 h5 22.Ra1 Kb5 23.Re4 f6 24.h4 Rd8 25.Rea4 Rd4 26.Rxa5+ Kc6 27.R1a4 
Kb6 28.Ra6+ Kb7 29.R6a5 Kb6 30.Ra7 Kc6 31.c3 Rd7 32.f3 Rg7 33.R4a6+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Euwe, Machgielis"]
[Black "Stumpers, Louis"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "75"]
[ECO "A30"]

1.Nf3 Nf6 2.g3 b6 3.Bg2 Bb7 4.c4 e6 5.O-O c5 6.Nc3 Be7 7.b3 Ne4 8.Bb2 Nxc3
9.Bxc3 O-O 10.d4 Bf6 11.Qc2 Nc6 12.Rad1 cxd4 13.Nxd4 Bxd4 14.Bxd4 Nxd4 15.
Rxd4 Bxg2 16.Kxg2 Rc8 17.Rfd1 Rc7 18.Qd3 Qa8+ 19.f3 Rd8 20.Rh4 f5 21.Qd6 
Qc8 22.Rhd4 Rf8 23.h4 Rf7 24.h5 h6 25.Qf4 Kf8 26.R1d3 Ke8 27.g4 fxg4 28.
Qxg4 Rc5 29.Kf1 Rg5 30.Qe4 e5 31.Rd5 Qc7 32.Qh7 Qc6 33.b4 Qf6 34.Rd6 Qf4 
35.Qg8+ Rf8 36.Qd5 Qc1+ 37.Rd1 Qe3 38.Re6+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Kramer, Haije"]
[Black "Spanjaard, Eduard"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "60"]
[ECO "E94"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.Be2 Nbd7 7.O-O e5 8.d5 a5 
9.Ne1 Nc5 10.Bg5 h6 11.Bxf6 Qxf6 12.Nd3 Nxd3 13.Qxd3 Qe7 14.b3 f5 15.a3 
fxe4 16.Nxe4 Bf5 17.Bf3 Qf7 18.Qe2 b6 19.b4 Qe7 20.Qe3 Rfb8 21.Rfb1 Kh7 
22.g3 Qf8 23.h4 axb4 24.axb4 Rxa1 25.Rxa1 Ra8 26.Ra3 Qd8 27.Qc3 Rxa3 28.
Qxa3 Bf8 29.Qa7 Kg7 30.Bg2 Be7 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Van Scheltinga, Theodore"]
[Black "Orbaan, Constant"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "121"]
[ECO "D65"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Bg5 Be7 5.Nc3 O-O 6.e3 Nbd7 7.Rc1 c6 8.Qc2 a6 
9.cxd5 Nxd5 10.Bxe7 Qxe7 11.Nxd5 exd5 12.Bd3 g6 13.O-O Nf6 14.Qc5 Qxc5 15.
Rxc5 Ne8 16.b4 Nd6 17.a4 Bd7 18.Ne5 Be8 19.f3 f6 20.Ng4 Bd7 21.Nf2 f5 22.
Nh3 Kh8 23.Rc3 a5 24.b5 cxb5 25.Rc7 Rfd8 26.axb5 a4 27.Nf4 Bxb5 28.Nxd5 
Ne8 29.Bxb5 Nxc7 30.Nxc7 Ra5 31.Bd3 Rd6 32.Ra1 a3 33.Kf2 f4 34.Nb5 fxe3+ 
35.Kxe3 Rda6 36.Kd2 Rb6 37.Kc3 a2 38.Kb4 Ra8 39.Bc4 Rba6 40.Nc3 Rb6+ 41.
Bb5 Rc8 42.Nd5 Rd6 43.Bc4 Rdc6 44.Bb3 Ra8 45.Nc3 Rb6+ 46.Nb5 Rba6 47.Bd5 
Ra4+ 48.Kb3 R8a5 49.Bc4 Kg7 50.Nc3 Ra3+ 51.Kb4 Kf8 52.Bb3 b5 53.Rxa2 Rxa2 
54.Bxa2 Ra7 55.Bd5 g5 56.Nxb5 Ra1 57.h3 Rg1 58.f4 gxf4 59.Nc3 Ke7 60.Ne2 
Rd1 61.Kc4 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.20"]
[Round "4"]
[White "Van den Berg, Carel"]
[Black "Henneberke, Franciscus"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "A98"]

1.d4 f5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Qc2 Qh5 
9.Bg5 h6 10.Bxf6 Bxf6 11.e3 Nc6 12.Rad1 Bd7 13.a3 a6 14.b4 Nd8 15.a4 c6 
16.c5 d5 17.Ne5 Qe8 18.Rb1 Kh7 19.f4 Nf7 20.Nxf7 Qxf7 21.Bf3 Ra7 22.Be2 
Rb8 23.b5 axb5 24.axb5 Qe8 25.Rb4 Qd8 26.Na4 cxb5 27.Nb6 Qe8 28.g4 g6 29.
gxf5 gxf5 30.Kh1 Bc6 31.Rg1 Qf7 32.Rbb1 Ra3 33.Qd2 Rg8 34.Rxg8 Qxg8 35.Rg1
Qd8 36.Bh5 Be8 37.Bxe8 Qxe8 38.Qf2 b4 39.Qg3 Bxd4 40.Nd7 Bc3 41.Ne5 Bxe5 
42.fxe5 Qf7 43.Qf4 Qh5 44.Qg3 Qg4 45.Qxg4 fxg4 46.Rxg4 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Donner, Jan"]
[Black "Van den Berg, Carel"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "66"]
[ECO "D22"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.h3 Bh5 6.g4 Bg6 7.Ne5 Be4 8.f3 Bxb1 
9.Rxb1 e6 10.Bxc4 c6 11.e4 b5 12.Bb3 Bb4+ 13.Kf1 Ne7 14.Be3 Nd7 15.Nd3 Ba5
16.f4 f5 17.gxf5 exf5 18.Qh5+ g6 19.Qh6 fxe4 20.Qg7 Rf8 21.Ne5 Nxe5 22.
Qxe5 Bc7 23.Qxe4 Bxf4 24.Kg2 Qd6 25.Rhe1 Kd7 26.d5 cxd5 27.Qd3 Rf5 28.Rbc1
Rg5+ 29.Kh1 Rg3 30.Qd2 Rxh3+ 31.Kg1 Rf8 32.Bxf4 Rxf4 33.Qg2 Rhh4 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Henneberke, Franciscus"]
[Black "Kramer, Haije"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "134"]
[ECO "A07"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bf5 5.d3 e6 6.Nbd2 Be7 7.c3 h6 8.b3 Nbd7 
9.c4 O-O 10.Bb2 a5 11.Nd4 Bh7 12.e4 Nc5 13.Qe2 dxe4 14.dxe4 Qb6 15.Bc3 
Rfd8 16.Rfd1 Rd7 17.e5 Ne8 18.Nf1 Rad8 19.Nf3 Nd3 20.Bd2 Bc5 21.Be3 Nc7 
22.Rd2 Bxe3 23.Nxe3 Nxe5 24.Rxd7 Nxf3+ 25.Bxf3 Rxd7 26.Rd1 Rd4 27.Qe1 e5 
28.Ng4 Rxd1 29.Qxd1 Qd4 30.Qxd4 exd4 31.Ne5 f6 32.Nd7 Na6 33.Kf1 Kf7 34.
Ke1 Ke7 35.Nb6 Nc5 36.Kd2 Bf5 37.Bd1 Ne4+ 38.Ke1 Nc3 39.c5 Nxa2 40.Nc4 Nb4
41.Be2 a4 42.bxa4 Nd3+ 43.Bxd3 Bxd3 44.Nd6 Ke6 45.Nxb7 Kd5 46.Kd2 Ba6 47.
Nd6 Kxc5 48.Nf5 Bc8 49.Nxg7 Kb4 50.Ne8 c5 51.Nxf6 c4 52.Ne4 Kxa4 53.Nd6 
c3+ 54.Kc2 Be6 55.f4 Kb4 56.f5 Bb3+ 57.Kd3 Kc5 58.Ne4+ Kd5 59.Nf2 Bc4+ 60.
Kc2 Ke5 61.g4 Kf4 62.h3 Ke3 63.Nd1+ Kf3 64.Nxc3 dxc3 65.Kxc3 Ba2 66.Kd4 
Kf4 67.f6 Bb3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Muehring, Willem"]
[Black "Barendregt, Johan"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "76"]
[ECO "D53"]

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.Nc3 Be7 5.Bg5 O-O 6.Bxf6 Bxf6 7.e4 dxe4 8.Nxe4
Nc6 9.Nxf6+ Qxf6 10.Qd2 Rd8 11.O-O-O Nxd4 12.Qe3 c5 13.Ne5 Bd7 14.Bd3 Bc6 
15.Nxc6 bxc6 16.f4 Rab8 17.Rd2 Rb7 18.Re1 Rbd7 19.Qe5 Nb3+ 20.axb3 Rxd3 
21.Rxd3 Rxd3 22.Qxf6 gxf6 23.Kc2 Rd7 24.Ra1 e5 25.Re1 Re7 26.Rd1 exf4 27.
Rd8+ Kg7 28.Kd2 Re3 29.Rd3 Rxd3+ 30.Kxd3 Kg6 31.Ke4 Kg5 32.Kf3 Kf5 33.Kf2 
Ke4 34.Ke2 a5 35.h3 h5 36.h4 f5 37.Kf2 f3 38.gxf3+ Kd3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Orbaan, Constant"]
[Black "Euwe, Machgielis"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "70"]
[ECO "C65"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Nc3 Bd7 6.a3 g6 7.Bg5 h6 8.Be3 Bg7 
9.h3 Ne7 10.Bxd7+ Qxd7 11.d4 exd4 12.Bxd4 Nc6 13.Be3 O-O 14.O-O Rfe8 15.
Qd3 Qe6 16.Qb5 Rab8 17.Rfe1 Nxe4 18.Nxe4 Qxe4 19.Bxh6 Qxc2 20.Bxg7 Kxg7 
21.Rxe8 Rxe8 22.Qxb7 Rb8 23.Qxc7 Rxb2 24.Rf1 Qc5 25.Ng5 Qxg5 26.Qxc6 Qc5 
27.Qxc5 dxc5 28.Rc1 Rb5 29.h4 Kf6 30.g4 Ke5 31.a4 Ra5 32.Rc4 Kd5 33.Rf4 c4
34.h5 c3 35.h6 c2 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Spanjaard, Eduard"]
[Black "Van Scheltinga, Theodore"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "64"]
[ECO "D44"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Nf6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.
exf6 gxh4 10.Ne5 Qxf6 11.Be2 Nd7 12.O-O Nxe5 13.dxe5 Qd8 14.Bf3 Qb6 15.a4 
Bb7 16.a5 Qc7 17.a6 Rd8 18.Qe2 Bc8 19.Qe4 Bd7 20.Qf4 Bg7 21.Rfe1 O-O 22.
Qxh4 Bxe5 23.Qxh6 Bg7 24.Qh4 f5 25.Re3 Bc8 26.Be2 Rd4 27.g4 Rf6 28.Rg3 b4 
29.Nd1 f4 30.Rf3 Qe5 31.Bf1 Qd5 32.g5 Rg6 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.21"]
[Round "5"]
[White "Stumpers, Louis"]
[Black "Cortlever, Nicolaas"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "53"]
[ECO "B73"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 g6 7.O-O Bg7 8.Be3 
O-O 9.Qd2 Ng4 10.Bxg4 Bxg4 11.f4 Nxd4 12.Bxd4 e5 13.Be3 exf4 14.Rxf4 Be6 
15.Raf1 Rc8 16.R4f3 Rc4 17.Nd5 f5 18.Bg5 Rxc2 19.Qxc2 Qxg5 20.Nf4 Bf7 21.
Nh3 Qf6 22.exf5 Qxb2 23.Qxb2 Bxb2 24.fxg6 hxg6 25.Ng5 Bg7 26.Rxf7 Rxf7 27.
Nxf7 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Barendregt, Johan"]
[Black "Stumpers, Louis"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "82"]
[ECO "D58"]

1.c4 Nf6 2.Nc3 d5 3.d4 e6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5
9.Bxe7 Nxe7 10.Rc1 Bb7 11.Bd3 Nd7 12.O-O c5 13.Qe2 cxd4 14.Nxd4 Nc5 15.Bb1
Nd5 16.Rfd1 Nxc3 17.Rxc3 Qe7 18.e4 Rfd8 19.Rg3 Rd7 20.b4 Rad8 21.Qe3 Qh4 
22.f4 Qh5 23.Rd2 e5 24.Rh3 Qg4 25.fxe5 Nxe4 26.Rd3 Rxd4 27.Qxd4 Rxd4 28.
Rxd4 Qe2 29.Rd8+ Kh7 30.Rf3 Qe1+ 31.Rf1 Qe3+ 32.Kh1 Ba6 33.Rfd1 g6 34.Bxe4
Qxe4 35.R8d7 Kg7 36.Rxa7 Bb7 37.Rg1 Bd5 38.b5 Qxe5 39.a4 h5 40.a5 h4 41.h3
Qg3 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Cortlever, Nicolaas"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "119"]
[ECO "C45"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Nc2 Bb6 8.Be2
Qg6 9.Bf3 Ne5 10.O-O Nxf3+ 11.Qxf3 O-O 12.Nd2 d6 13.Qg3 f5 14.Qxg6 Nxg6 
15.Bxb6 axb6 16.Nd4 Ne5 17.b3 Bd7 18.exf5 Bxf5 19.Nxf5 Rxf5 20.a4 Nd3 21.
Rad1 Re8 22.Nf3 Nc5 23.Nd4 Rfe5 24.g3 d5 25.Kg2 c6 26.Rd2 g6 27.Ra1 Re4 
28.Rdd1 Ne6 29.Nxe6 R8xe6 30.a5 bxa5 31.Rxa5 Re2 32.Rd3 Rf6 33.Rf3 Rxf3 
34.Kxf3 Rc2 35.c4 dxc4 36.bxc4 Rxc4 37.Ra7 Rb4 38.Ke3 Kf7 39.f4 Kf6 40.Ra8
Rb2 41.Rb8 Kf5 42.h3 Rb3+ 43.Kf2 c5 44.Rc8 b6 45.Rh8 h5 46.Rf8+ Ke4 47.
Re8+ Kd4 48.Rd8+ Kc3 49.Rd6 c4 50.Rxg6 Kb2 51.Rc6 c3 52.f5 c2 53.f6 Rc3 
54.Rxc3 Kxc3 55.f7 c1=Q 56.f8=Q Qd2+ 57.Kf3 Qd5+ 58.Kf2 b5 59.Qa3+ Kc2 60.
Qb4 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Kramer, Haije"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "62"]
[ECO "C02"]

1.d4 e6 2.e4 d5 3.e5 c5 4.c3 Ne7 5.Nf3 Nbc6 6.Bd3 cxd4 7.cxd4 Nf5 8.Bxf5 
exf5 9.Nc3 Be6 10.Ne2 Qd7 11.Nf4 O-O-O 12.Bd2 Kb8 13.Rc1 h6 14.h4 g6 15.a3
Be7 16.b4 Rdg8 17.b5 Nd8 18.Qb3 g5 19.Nd3 gxh4 20.Nxh4 Bxh4 21.Rxh4 Rxg2 
22.Rxh6 Rxh6 23.Bxh6 Qe7 24.Qc3 Rg1+ 25.Ke2 Rxc1 26.Qxc1 Bd7 27.Bg5 Qe8 
28.Bxd8 Qxd8 29.Qc5 Be6 30.Nf4 b6 31.Qc6 Qh4 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Orbaan, Constant"]
[Black "Spanjaard, Eduard"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "82"]
[ECO "B26"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 e6 6.Be3 d6 7.Nge2 Nd4 8.O-O Ne7 
9.Kh1 O-O 10.Ng1 Rb8 11.Qd2 b5 12.Rac1 b4 13.Nd1 Ba6 14.Bh6 f5 15.Bxg7 
Kxg7 16.c3 bxc3 17.bxc3 Ndc6 18.exf5 gxf5 19.Nh3 Ne5 20.Nf4 Qd7 21.Re1 Bb7
22.d4 Bxg2+ 23.Kxg2 Qb7+ 24.Kh3 Nf3 25.Nxe6+ Kh8 26.Qb2 Rf6 27.Qxb7 Rh6+ 
28.Kg2 Nxe1+ 29.Kf1 Rxb7 30.Nd8 Nd3 31.Ra1 Rb6 32.Nf7+ Kg7 33.Nxh6 Kxh6 
34.Ne3 cxd4 35.cxd4 Kg5 36.Rd1 Nb4 37.Rc1 Nbd5 38.Re1 Kf6 39.Nxd5+ Nxd5 
40.Re8 Ra6 41.Rf8+ Ke6 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Van Scheltinga, Theodore"]
[Black "Henneberke, Franciscus"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "74"]
[ECO "A98"]

1.Nf3 f5 2.d4 e6 3.g3 Nf6 4.Bg2 Be7 5.c4 d6 6.O-O O-O 7.Nc3 Qe8 8.Qc2 Qh5 
9.Bg5 h6 10.Bxf6 Bxf6 11.Rad1 c6 12.d5 Bxc3 13.Qxc3 exd5 14.cxd5 c5 15.b4 
b6 16.bxc5 bxc5 17.Qa5 Na6 18.Ne5 dxe5 19.d6 e4 20.d7 Bxd7 21.Rxd7 Qxe2 
22.Rfd1 Nb4 23.Qc7 Qb2 24.Qxc5 Rac8 25.Qxa7 Nd3 26.Bf1 Ra8 27.Qe3 Rxa2 28.
Bxd3 exd3 29.R1xd3 Qe2 30.Qxe2 Rxe2 31.Rc3 Re6 32.Kg2 Ref6 33.Rcc7 R6f7 
34.Kf3 Rxd7 35.Rxd7 g5 36.h4 Rf7 37.Rd6 Kg7 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.22"]
[Round "6"]
[White "Van den Berg, Carel"]
[Black "Muehring, Willem"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "56"]
[ECO "D58"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1 h6 7.Bh4 b6 8.cxd5 exd5
9.Nf3 Be6 10.Bd3 Nbd7 11.O-O c5 12.Bb1 Qc7 13.dxc5 bxc5 14.b4 c4 15.Qa4 
Qb7 16.b5 Nc5 17.Qd1 a6 18.bxa6 Rxa6 19.Nd4 Rd8 20.Bf5 Bxf5 21.Nxf5 Nd3 
22.Rb1 Qd7 23.Qf3 Kh7 24.Nxe7 Qxe7 25.Rb5 g5 26.Bg3 Qe6 27.Rfb1 d4 28.exd4
Rxd4 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Cortlever, Nicolaas"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "121"]
[ECO "D79"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d4 d5 6.c4 c6 7.cxd5 cxd5 8.Nc3 
Nc6 9.Ne5 e6 10.Nxc6 bxc6 11.Na4 Nd7 12.Be3 Nb6 13.Rc1 Nxa4 14.Qxa4 Bd7 
15.Qa3 Re8 16.Rfd1 Qe7 17.Qxe7 Rxe7 18.Bf4 Be8 19.Bd6 Rb7 20.Rd2 Bf8 21.
Bxf8 Kxf8 22.e3 Rab8 23.b3 Ke7 24.Bf1 Kd6 25.Be2 Rc7 26.Rdc2 a5 27.Rc5 Ra7
28.f3 Rb4 29.Kf2 Rb8 30.h4 h6 31.g4 Bd7 32.R5c3 Rg8 33.Rh1 Rc7 34.Rc5 Ra7 
35.f4 Raa8 36.Bf3 Ra7 37.e4 Raa8 38.e5+ Ke7 39.Bd1 Kf8 40.Rh3 Kg7 41.Bc2 
Rgf8 42.Ke3 Ra7 43.Rg3 Raa8 44.f5 Ra7 45.Rc3 Rb7 46.a3 Rb6 47.Kd2 Ra8 48.
fxg6 fxg6 49.Rgf3 Be8 50.Rf6 Bf7 51.h5 g5 52.Rcf3 Rb7 53.Bg6 Bg8 54.Rc3 
Ra6 55.Bd3 Rab6 56.Rg6+ Kf8 57.Bc2 Rf7 58.Rxh6 Rf2+ 59.Kc1 Bf7 60.Rf6 Rxf6
61.exf6 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Donner, Jan"]
[Black "Van Scheltinga, Theodore"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "97"]
[ECO "E22"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 Nc6 5.Nf3 Ne4 6.e3 O-O 7.Bd3 f5 8.O-O 
Bxc3 9.bxc3 b6 10.Nd2 Nxd2 11.Bxd2 Ba6 12.Qd1 Na5 13.Qe2 d5 14.cxd5 Bxd3 
15.Qxd3 exd5 16.Rae1 Qd6 17.Re2 Nc4 18.Be1 Rae8 19.f3 c6 20.Bg3 Qg6 21.
Rfe1 Re6 22.Bf4 Rfe8 23.Kf2 Qf6 24.h3 h5 25.Bh2 b5 26.Bf4 g6 27.Bh2 Qe7 
28.Bf4 Qf6 29.Bh2 Kf7 30.Bf4 a5 31.Bh2 a4 32.Bf4 Kg8 33.Bg3 h4 34.Bh2 g5 
35.Qc2 Kf7 36.Qd3 Ke7 37.Qb1 Kd7 38.Qd3 g4 39.Bf4 R6e7 40.Rf1 Rg8 41.Ke1 
gxh3 42.gxh3 Reg7 43.Bh2 Rg2 44.Rxg2 Rxg2 45.Rf2 Rg7 46.Kf1 Qg5 47.Re2 a3 
48.Ke1 Re7 49.Kf2 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Euwe, Machgielis"]
[Black "Spanjaard, Eduard"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "A14"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.c4 O-O 6.b3 d4 7.Bb2 c5 8.b4 Nfd7 
9.bxc5 e5 10.e3 Bxc5 11.exd4 exd4 12.d3 Qb6 13.Qb3 Nc6 14.Nbd2 Nf6 15.Qxb6
axb6 16.Nb3 Bf5 17.Rfd1 Rfd8 18.a3 h6 19.h3 Kf8 20.Ne1 Rd7 21.Rd2 Re8 22.
Nc2 Ne5 23.Rad1 Bg6 24.Bxd4 Bxd4 25.Ncxd4 Red8 26.f4 Nxd3 27.Rxd3 Bxd3 28.
Rxd3 Rc8 29.Rc3 Rdc7 30.Nd2 Rd7 31.N4b3 Ra8 32.Rc2 Rxa3 33.Kf2 Ke7 34.Rb2 
Kd8 35.Nb1 Ra4 36.N3d2 Kc7 37.Nc3 Ra8 38.Nd5+ Nxd5 39.cxd5 Ra4 40.h4 Rd8 
41.Ne4 Re8 42.Nc3 Ra5 43.Nb5+ Kd8 44.d6 Kc8 45.Bh3+ Kd8 46.Rc2 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Henneberke, Franciscus"]
[Black "Orbaan, Constant"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "103"]
[ECO "E14"]

1.c4 Nf6 2.d4 e6 3.Nc3 d5 4.Nf3 Be7 5.e3 b6 6.cxd5 exd5 7.Bd3 O-O 8.Ne5 c5
9.O-O Bb7 10.b3 Ne4 11.Bb2 cxd4 12.exd4 Nd7 13.Re1 Bb4 14.Bxe4 dxe4 15.
Nxd7 Qxd7 16.a3 Bxc3 17.Bxc3 f5 18.f4 exf3 19.gxf3 Qc6 20.Bb4 Rfe8 21.
Rxe8+ Rxe8 22.d5 Qxd5 23.Qxd5+ Bxd5 24.Kf2 a5 25.Bc3 Bxb3 26.Rb1 a4 27.Re1
Rxe1 28.Bxe1 f4 29.Bb4 Kf7 30.Bd6 g5 31.Bb4 Kg6 32.Bd6 Kf5 33.Bb4 Be6 34.
Bd6 h5 35.Bb4 g4 36.fxg4+ hxg4 37.Be7 b5 38.Bb4 Kg5 39.Be7+ Kh5 40.Bd6 Kg5
41.Be7+ Kf5 42.Bd6 Bd5 43.Bb4 Bb7 44.Bc5 Kg5 45.Be7+ Kh5 46.Bd6 Kh4 47.
Bxf4 b4 48.axb4 a3 49.b5 a2 50.Be5 Kg5 51.Ke3 Kf5 52.Bc3 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Muehring, Willem"]
[Black "Kramer, Haije"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "46"]
[ECO "E33"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.a3 Bxc3+ 7.Qxc3 a5 8.b3 
Ne4 9.Qc2 f5 10.Bb2 O-O 11.g3 Qe7 12.Bg2 e5 13.d5 Nd8 14.O-O Bd7 15.b4 b6 
16.Nd2 Nxd2 17.Qxd2 f4 18.c5 bxc5 19.bxc5 Bb5 20.a4 Ba6 21.cxd6 cxd6 22.
Ba3 fxg3 23.hxg3 Nf7 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.24"]
[Round "7"]
[White "Stumpers, Louis"]
[Black "Van den Berg, Carel"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "78"]
[ECO "A95"]

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.c4 c6 6.O-O O-O 7.Nc3 d5 8.Ne5 Nbd7 
9.cxd5 cxd5 10.Nd3 Ne4 11.f3 Nxc3 12.bxc3 Nb6 13.Qb3 Bd7 14.a4 Qc7 15.a5 
Nc4 16.Bf4 Bd6 17.Bxd6 Qxd6 18.Ra2 a6 19.Rb1 Bb5 20.Qb4 Qc7 21.Nc5 Rae8 
22.e4 f4 23.Bh3 Rf6 24.e5 Rh6 25.Bf1 fxg3 26.hxg3 Qf7 27.Bg2 Qg6 28.Kf2 
Rf8 29.Rh1 Qg5 30.Re2 Rg6 31.Rh3 h5 32.Nxb7 h4 33.g4 Nd2 34.c4 Nxc4 35.Kg1
Rf7 36.Nc5 Ne3 37.Rb2 Nxg4 38.Nxe6 Qe3+ 39.Kh1 Qc1+ 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Euwe, Machgielis"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "53"]
[ECO "E07"]

1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.d4 O-O 6.O-O c6 7.Nbd2 b6 8.b3 Bb7 
9.Bb2 Nbd7 10.Ne5 c5 11.Nxd7 Qxd7 12.dxc5 Bxc5 13.Bxf6 gxf6 14.cxd5 Bxd5 
15.Ne4 Be7 16.Nc3 Rad8 17.Nxd5 exd5 18.Qd4 Qe6 19.Rad1 Qe5 20.Bxd5 Qxd4 
21.Rxd4 f5 22.Rfd1 Kg7 23.Rf4 Rc8 24.Bc4 Rc5 25.Rd7 Bg5 26.Rf3 a5 27.Rb7 
1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Kramer, Haije"]
[Black "Stumpers, Louis"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "133"]
[ECO "D79"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 g6 4.O-O Bg7 5.d4 O-O 6.c4 c6 7.cxd5 cxd5 8.Nc3 
Ne4 9.Qb3 e6 10.Nxe4 dxe4 11.Ng5 Qd5 12.Nxe4 Qxb3 13.axb3 Bxd4 14.Rd1 Nc6 
15.Ra4 f5 16.Nd6 e5 17.Bh6 Be6 18.Bxf8 Bxb3 19.Bh6 Bxd1 20.Bd5+ Kh8 21.
Nf7+ Kg8 22.Nd6+ Kh8 23.Nf7+ Kg8 24.Nxe5+ Kh8 25.Nf7+ Kg8 26.Ng5+ Kh8 27.
Nf7+ Kg8 28.Nd6+ Kh8 29.b3 Bg7 30.Nf7+ Kg8 31.Ng5+ Kh8 32.Nf7+ Kg8 33.Nd8+
Kh8 34.Bxg7+ Kxg7 35.Nxb7 Rc8 36.Nd6 Rd8 37.Bxc6 Rxd6 38.Rxa7+ Kh6 39.Ba4 
Bxe2 40.Rd7 Re6 41.f4 Bf3 42.Kf2 Be4 43.Rd2 g5 44.fxg5+ Kxg5 45.b4 Ra6 46.
Bd1 Kf6 47.Be2 Ra1 48.Rb2 Rh1 49.h4 f4 50.gxf4 Rxh4 51.Kg3 Rh1 52.b5 Rg1+ 
53.Kf2 Rg2+ 54.Ke3 Kf5 55.b6 Rg3+ 56.Kf2 Rg2+ 57.Ke3 Rg3+ 58.Kf2 Rg2+ 59.
Ke1 Rg7 60.Rb4 Rf7 61.Kf2 Bb7 62.Bf3 Ba6 63.b7 Bxb7 64.Bxb7 h5 65.Bc8+ Kg6
66.Rb6+ Kg7 67.Rb7 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Orbaan, Constant"]
[Black "Donner, Jan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "C68"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 f6 6.d3 Bd6 7.Ng1 Ne7 8.Nge2 
Ng6 9.O-O O-O 10.f4 exf4 11.Nxf4 Bc5+ 12.Kh1 Ne5 13.Qe1 Re8 14.Be3 Bf8 15.
Qg3 Kh8 16.Rae1 c5 17.Nce2 c4 18.d4 Ng4 19.h3 Nxe3 20.Qxe3 c6 21.c3 b5 22.
Rf2 Ra7 23.Ng3 Bd6 24.Ref1 Rae7 25.Qf3 Kg8 26.Nfh5 Rc7 27.Nf5 Bf8 28.Nh6+ 
Kh8 29.Ng4 Be6 30.Qg3 Bd6 31.e5 fxe5 32.Nxe5 Rf8 33.Nf4 Bf5 34.Qe3 Re8 35.
g4 Bc8 36.Ng2 Be6 37.Nf4 Bg8 38.Kg1 c5 39.Qe4 g6 40.Re2 Rce7 41.Rfe1 Kg7 
42.Nfxg6 hxg6 43.Qxg6+ Kh8 44.Qf6+ Kh7 45.Qg6+ Kh8 46.Qf6+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Spanjaard, Eduard"]
[Black "Henneberke, Franciscus"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "39"]
[ECO "A54"]

1.d4 Nf6 2.Nf3 d6 3.g3 Nbd7 4.Bg2 e5 5.O-O c6 6.c4 Be7 7.Nc3 Qc7 8.b3 O-O 
9.Bb2 Re8 10.Qc2 Nf8 11.h3 Ng6 12.Rac1 Bd7 13.Rfd1 Rad8 14.Rd2 Qa5 15.dxe5
dxe5 16.Rcd1 Bc8 17.Ng5 Rxd2 18.Rxd2 Rd8 19.Rxd8+ Bxd8 20.a3 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Van Scheltinga, Theodore"]
[Black "Muehring, Willem"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "91"]
[ECO "D57"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Bg5 Be7 5.Nc3 O-O 6.e3 h6 7.Bh4 Ne4 8.Bxe7 
Qxe7 9.cxd5 Nxc3 10.bxc3 exd5 11.Bd3 c5 12.O-O Nc6 13.Re1 Qd6 14.Rb1 b6 
15.dxc5 Qxc5 16.Qd2 Rd8 17.Rbc1 Bg4 18.Nd4 Ne5 19.Ba6 Rd6 20.f4 Nc4 21.Qd3
Bd7 22.Bxc4 dxc4 23.Qe2 b5 24.Qf2 Bc6 25.e4 Re8 26.e5 Rg6 27.Nxc6 Qxf2+ 
28.Kxf2 Rxc6 29.Rb1 a6 30.Red1 f6 31.Rd5 fxe5 32.fxe5 Rce6 33.Re1 Kf7 34.
Kf3 Rb8 35.a3 Ke7 36.Red1 Rb7 37.Kf4 Rg6 38.g4 a5 39.Rc5 Rgb6 40.h3 Ke6 
41.Ke4 Rf7 42.Rd6+ Rxd6 43.exd6 Rb7 44.Rc7 Rxc7 45.dxc7 Kd7 46.Kd5 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.25"]
[Round "8"]
[White "Van den Berg, Carel"]
[Black "Cortlever, Nicolaas"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "59"]
[ECO "D72"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb4 7.d5 c6 8.Ne2 O-O 
9.O-O cxd5 10.exd5 Bf5 11.Nbc3 Qd7 12.Nf4 N8a6 13.a3 Nc2 14.Ra2 Nd4 15.b4 
Rac8 16.Nfe2 Nxe2+ 17.Nxe2 Bh3 18.Bxh3 Qxh3 19.Be3 Qd7 20.Bxa7 Ra8 21.Bd4 
Qxd5 22.Rd2 Bxd4 23.Rxd4 Qf3 24.Qd3 Qxd3 25.Rxd3 Rfd8 26.Rfd1 Rxd3 27.Rxd3
Kf8 28.Rd7 Rb8 29.Nc3 Ke8 30.Rd3 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Barendregt, Johan"]
[Black "Van den Berg, Carel"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "47"]
[ECO "C49"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Bg5 
Qe7 9.Re1 Nd8 10.d4 Ne6 11.Bc1 c5 12.d5 Nc7 13.Bd3 b5 14.c4 Bd7 15.Bg5 h6 
16.Bh4 Rfb8 17.Nd2 Nce8 18.f3 b4 19.Bf2 Bc8 20.g3 Nd7 21.f4 Nef6 22.Be3 
Nh7 23.Nf3 f6 24.f5 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Cortlever, Nicolaas"]
[Black "Kramer, Haije"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "40"]
[ECO "B59"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Bg5 Nxe4 10.Nxe4 Bxg5 11.Qxd6 Be7 12.Qxd8 Rxd8 13.Rfd1 Bf5 14.Bf3 
Rxd1+ 15.Rxd1 Rd8 16.Rxd8+ Nxd8 17.Kf1 Kf8 18.c3 Bc8 19.Nec5 f5 20.Be2 Bf6
1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Donner, Jan"]
[Black "Spanjaard, Eduard"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "67"]
[ECO "D44"]

1.d4 d5 2.c4 e6 3.Nf3 c6 4.Nc3 Nf6 5.Bg5 dxc4 6.a4 Bb4 7.e4 h6 8.Bxf6 Qxf6
9.Bxc4 O-O 10.O-O Nd7 11.Qe2 e5 12.Nxe5 Nxe5 13.dxe5 Qxe5 14.f4 Qc5+ 15.
Kh1 Bg4 16.Bxf7+ Rxf7 17.Qxg4 Bxc3 18.bxc3 Qxc3 19.Qe6 Rf8 20.Rad1 Kh7 21.
f5 Rf6 22.Qd7 R6f7 23.Qd6 Qc2 24.Qg6+ Kh8 25.Rde1 Qc3 26.g4 Qh3 27.e5 Rd7 
28.Rf2 Qc3 29.Ref1 Qh3 30.f6 Rg8 31.Qf5 Rd4 32.f7 Rf8 33.e6 Rxg4 34.Qf3 
1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Henneberke, Franciscus"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "97"]
[ECO "C50"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 d6 5.Nc3 Nf6 6.Bg5 h6 7.Bxf6 Qxf6 8.Nd5 
Qd8 9.c3 a6 10.O-O O-O 11.a4 Ba7 12.Qe2 Ne7 13.Ne3 Ng6 14.g3 Bh3 15.Rfd1 
c6 16.Kh1 Qf6 17.Ng1 Be6 18.Qf3 Qxf3+ 19.Nxf3 d5 20.Ba2 dxe4 21.dxe4 Bxa2 
22.Rxa2 Bxe3 23.fxe3 Rfd8 24.Raa1 f6 25.Rd2 Kf7 26.Rad1 Ke7 27.Rxd8 Rxd8 
28.Rxd8 Kxd8 29.Nd2 Nf8 30.Kg2 Ne6 31.Kf3 h5 32.h4 g5 33.Ke2 g4 34.b4 b5 
35.axb5 axb5 36.Kd3 c5 37.Nb1 c4+ 38.Ke2 Nc7 39.Na3 Kd7 40.Kd2 Kc6 41.Nb1 
Ne8 42.Ke2 Nd6 43.Nd2 Kd7 44.Ke1 Ke6 45.Kf2 f5 46.exf5+ Kxf5 47.e4+ Nxe4+ 
48.Nxe4 Kxe4 49.Ke2 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Muehring, Willem"]
[Black "Orbaan, Constant"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "79"]
[ECO "D61"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 c6 8.Rd1 a6 
9.a3 Re8 10.Bd3 h6 11.Bh4 b5 12.c5 e5 13.dxe5 Ng4 14.Bg3 Bf8 15.e6 fxe6 
16.Bg6 Bxc5 17.Bxe8 Qxe8 18.O-O e5 19.Ne2 e4 20.Nfd4 Bb7 21.b4 Ba7 22.Qc3 
Bb8 23.Nf5 Be5 24.Bxe5 Qxe5 25.Qxe5 Ngxe5 26.Ned4 g6 27.Nd6 Ra7 28.f3 c5 
29.bxc5 Nxc5 30.fxe4 Nc4 31.Nxc4 dxc4 32.e5 Be4 33.Rf6 Nd7 34.Rd6 Kf8 35.
Rf1+ Ke7 36.Rf4 Ba8 37.Rxg6 c3 38.Rg7+ Kd8 39.e6 c2 40.Nxc2 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.26"]
[Round "9"]
[White "Stumpers, Louis"]
[Black "Van Scheltinga, Theodore"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "90"]
[ECO "D45"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Nf6 5.e3 a6 6.c5 b6 7.cxb6 Nbd7 8.Bd2 Nxb6 
9.Na4 Nbd7 10.Rc1 Bb7 11.a3 Bd6 12.Bb4 Bxb4+ 13.axb4 O-O 14.Be2 a5 15.b5 
cxb5 16.Bxb5 Ba6 17.Bxa6 Rxa6 18.O-O Qb8 19.Qe2 Ra7 20.Rc6 Qb4 21.Qc2 Ne4 
22.Ne1 Nd2 23.Nd3 Qb7 24.Rc1 Nc4 25.Rxc4 dxc4 26.Qxc4 Nb6 27.Nxb6 Qxb6 28.
b3 h6 29.h3 Rb8 30.Nc5 Rc7 31.Ra1 e5 32.Qd5 exd4 33.exd4 Re7 34.Qc4 Qd8 
35.d5 Rc8 36.Qd4 Qd6 37.Ne4 Qb4 38.Qxb4 axb4 39.f3 Rd7 40.Ra4 f5 41.Ng3 
Rxd5 42.Rxb4 Rc1+ 43.Kh2 Rc2 44.Nf1 Re2 45.Kg3 Rd1 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Henneberke, Franciscus"]
[Black "Donner, Jan"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "62"]
[ECO "C50"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 d6 6.Bg5 h6 7.Bxf6 Qxf6 8.Nd5 
Qd8 9.c3 a6 10.a4 Ba7 11.O-O O-O 12.Kh1 Kh7 13.Ne3 Ne7 14.d4 f6 15.Ng1 Qe8
16.Ne2 Bd7 17.f3 Rd8 18.Qb3 Bc8 19.Be6 Bxe6 20.Qxe6 d5 21.Nxd5 Nxd5 22.
exd5 Qxe6 23.dxe6 Rfe8 24.dxe5 Rxe6 25.Rad1 Rxd1 26.Rxd1 Rxe5 27.Nc1 Ra5 
28.b3 b5 29.axb5 axb5 30.g3 Ra1 31.Re1 Bf2 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Kramer, Haije"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "72"]
[ECO "A49"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 c5 6.d4 cxd4 7.Qxd4 Nc6 8.Qh4 
Qb6 9.Nc3 Re8 10.Rb1 d6 11.Bg5 Be6 12.b3 Qa5 13.Bd2 Qh5 14.Qxh5 Nxh5 15.
Nd5 Rac8 16.Rbc1 Nf6 17.Nf4 Bf5 18.Bc3 Red8 19.Rfd1 h6 20.Nd2 Bg4 21.f3 
Bd7 22.e4 Ne8 23.Nb1 Kf8 24.Kf2 Nc7 25.Bxg7+ Kxg7 26.Nc3 Nb4 27.Bf1 a5 28.
a3 Nba6 29.Nfd5 Nxd5 30.Nxd5 Kf8 31.Nb6 Rc6 32.Nxd7+ Rxd7 33.c5 Rxc5 34.
Bxa6 Rxc1 35.Rxc1 bxa6 36.Rc8+ Kg7 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Orbaan, Constant"]
[Black "Stumpers, Louis"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "32"]
[ECO "C65"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Nc3 Bd7 6.a3 Be7 7.Nd5 O-O 8.Nxe7+ 
Nxe7 9.Bxd7 Nxd7 10.d4 Ng6 11.dxe5 Ndxe5 12.Nxe5 dxe5 13.Qxd8 Rfxd8 14.Be3
Nf8 15.Ke2 Ne6 16.Rhd1 c5 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Spanjaard, Eduard"]
[Black "Muehring, Willem"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "71"]
[ECO "E94"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O exd4 8.Nxd4 
Re8 9.f3 Nc6 10.Be3 a5 11.Ndb5 Nb4 12.a3 Na6 13.Qd2 Nd7 14.Rac1 Ndc5 15.
Rf2 f5 16.Bg5 Qd7 17.Nd5 fxe4 18.b4 axb4 19.axb4 e3 20.Bxe3 Ne6 21.f4 b6 
22.Bg4 h5 23.Bh3 Qc6 24.Qd3 Nf8 25.Bxc8 Raxc8 26.Na7 Qd7 27.Nxc8 Qxc8 28.
Bd4 Qd7 29.Qc3 Nxb4 30.Bxg7 Nxd5 31.cxd5 Qxg7 32.Qxg7+ Kxg7 33.Rcc2 Nh7 
34.Rxc7+ Kh6 35.Rd7 Re4 36.Rxd6 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Van Scheltinga, Theodore"]
[Black "Cortlever, Nicolaas"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "48"]
[ECO "D74"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.Nf3 O-O 7.O-O Na6 8.e4 
Nb6 9.Nc3 Bg4 10.d5 Qd7 11.Qe2 e5 12.a4 Nc8 13.b3 Nd6 14.Ba3 Rfe8 15.Qe3 
f5 16.Nd2 f4 17.Qd3 Nf7 18.f3 Bh3 19.g4 Bxg2 20.Kxg2 Bf8 21.Bxf8 Kxf8 22.
Nc4 Nc5 23.Qc2 Nd6 24.Nxd6 cxd6 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.27"]
[Round "10"]
[White "Van den Berg, Carel"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "20"]
[ECO "C48"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxd4 exd4 6.e5 dxc3 7.exf6 Qxf6 8.
dxc3 Qe5+ 9.Qe2 Qxe2+ 10.Bxe2 d5 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Barendregt, Johan"]
[Black "Van Scheltinga, Theodore"]
[Result "0-1"]
[EventDate "1950.07.17"]
[PlyCount "60"]
[ECO "D22"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.Qb3 Bxf3 8.gxf3 
b5 9.Be2 c5 10.dxc5 Nd7 11.c6 Nc5 12.Qc2 Rc8 13.a4 Rxc6 14.Bd2 b4 15.Bxb4 
Nd3+ 16.Qxd3 Rc1+ 17.Kd2 Qxd3+ 18.Bxd3 Rxh1 19.Bc3 Nf6 20.Bxa6 Nd5 21.Bb5+
Kd8 22.Ba5+ Kc8 23.e4 Nc7 24.Bd3 Be7 25.b4 Rd8 26.f4 Rd4 27.Ke3 e5 28.fxe5
Ne6 29.Ba6+ Kb8 30.b5 Rdd1 0-1

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Cortlever, Nicolaas"]
[Black "Orbaan, Constant"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "92"]
[ECO "E07"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.O-O Be7 5.b3 O-O 6.Bb2 Nbd7 7.c4 c6 8.d4 Qb6 
9.Nbd2 Rd8 10.Qc2 Bf8 11.Rad1 Qa6 12.Ne5 Nxe5 13.dxe5 Ne8 14.e4 d4 15.Nf3 
c5 16.Ne1 g6 17.f4 Ng7 18.Rf2 Rb8 19.Bf1 Qc6 20.Bd3 b6 21.Nf3 Be7 22.h3 
Kh8 23.Kh2 Rg8 24.Bc1 Bd8 25.Rdf1 Bd7 26.Qd2 Rb7 27.Kg1 Qc8 28.Nh2 f5 29.
exf6 Nh5 30.g4 Nxf6 31.Nf3 Bc6 32.Qe2 Rbg7 33.Ne5 Bb7 34.g5 Nd7 35.Ng4 Qc6
36.Kh2 Bc7 37.e5 Bd8 38.Qe1 Re8 39.Re2 Qc8 40.Qh4 Nf8 41.Nf6 Ree7 42.Qh6 
Bc7 43.Kg3 Nd7 44.h4 Ref7 45.h5 Nf8 46.Rh2 gxh5 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "83"]
[ECO "C89"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3 15.Be3 
Bg4 16.Qd3 f5 17.f4 Kh8 18.Bxd5 cxd5 19.Nd2 Rg8 20.Qf1 Qh5 21.a4 Qe8 22.
axb5 Qxb5 23.Qxb5 axb5 24.Kf2 Bh5 25.Nf3 Rgb8 26.Bd2 Bf7 27.h3 Kg8 28.g4 
fxg4 29.hxg4 Be8 30.f5 h5 31.Ne5 hxg4 32.Kg3 g6 33.Kxg4 gxf5+ 34.Kxf5 Rxa1
35.Rxa1 b4 36.Rg1+ Kh7 37.Rh1+ Kg8 38.cxb4 Bxb4 39.Bg5 Rb7 40.Bf6 Rh7 41.
Ra1 Rb7 42.Rg1+ 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Muehring, Willem"]
[Black "Henneberke, Franciscus"]
[Result "1/2-1/2"]
[EventDate "1950.07.17"]
[PlyCount "48"]
[ECO "A98"]

1.d4 f5 2.g3 e6 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.c4 d6 7.Nc3 Qe8 8.Qc2 Qh5 
9.Bg5 h6 10.Bxf6 Bxf6 11.Rad1 c6 12.e4 Nd7 13.exf5 exf5 14.d5 c5 15.Nb5 
Be5 16.Nxe5 Nxe5 17.f4 Nf7 18.Nc7 Rb8 19.Rfe1 Qg6 20.Qc3 Nd8 21.Re7 Rf7 
22.Rde1 Bd7 23.R7e3 Rc8 24.Ne6 Qf6 1/2-1/2

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Stumpers, Louis"]
[Black "Spanjaard, Eduard"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "87"]
[ECO "B59"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Be3 Be6 10.Bf3 Ne8 11.Qd2 f5 12.exf5 Bxf5 13.Rad1 Nf6 14.Nd5 e4 15.
Be2 Nxd5 16.Qxd5+ Kh8 17.c3 Qe8 18.Nd4 Nxd4 19.Bxd4 Qg6 20.Rfe1 b6 21.Bf1 
Rad8 22.Bb5 Rb8 23.Rd2 h5 24.f4 h4 25.Ba4 Qg4 26.Rf2 Qg6 27.Bc2 Rbe8 28.
Bxe4 Bf6 29.Rfe2 Bxe4 30.Rxe4 Rxe4 31.Qxe4 Qg4 32.Be3 h3 33.g3 Bh4 34.Bf2 
Bf6 35.Qe2 Qf5 36.Qe6 Qh5 37.g4 Qh7 38.g5 Bd8 39.Re3 Qb1+ 40.Re1 Qxb2 41.
Qxh3+ Kg8 42.g6 Rxf4 43.Qh7+ Kf8 44.Qh8# 1-0

[Event "15th NED-ch"]
[Site "Amsterdam NED"]
[Date "1950.07.28"]
[Round "11"]
[White "Van den Berg, Carel"]
[Black "Kramer, Haije"]
[Result "1-0"]
[EventDate "1950.07.17"]
[PlyCount "49"]
[ECO "E33"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.a3 Bxc3+ 7.Qxc3 a5 8.b3 
O-O 9.Bb2 Ne4 10.Qc2 f5 11.g3 Qe8 12.Bg2 e5 13.dxe5 dxe5 14.Rd1 Nf6 15.Qc3
e4 16.Nd4 Nxd4 17.Rxd4 Bd7 18.O-O Bc6 19.e3 Qf7 20.Rfd1 Nd7 21.b4 axb4 22.
axb4 Ne5 23.b5 Bd7 24.Rd5 Nd3 25.R5xd3 1-0
