[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1955.12.27"]
[Round "1"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "47"]
[ECO "D35"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 c5 7.a3 Be7 8.Nf3 
O-O 9.Bd3 Qc7 10.O-O Nc6 11.d5 Ne5 12.Bf4 Nxf3+ 13.Qxf3 e5 14.Bd2 c4 15.
Bc2 Bc5 16.Kh1 Bd6 17.Qh5 b5 18.f4 g6 19.Qh6 f6 20.f5 gxf5 21.exf5 Bb7 22.
Be4 Qf7 23.Rf3 Kh8 24.Rh3 1/2-1/2

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1955.12.28"]
[Round "2"]
[White "Donner, Jan"]
[Black "Euwe, Machgielis"]
[Result "0-1"]
[EventDate "1955.12.27"]
[PlyCount "66"]
[ECO "C81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 Nc5 11.Be3 O-O 12.c4 bxc4 13.Bxc4 Na5 14.b4 Nxc4 15.
Bxc5 Bxc5 16.bxc5 Qe7 17.c6 Qc5 18.Nc3 Rab8 19.Nd4 Nb2 20.Nb3 Rxb3 21.axb3
Qxc3 22.Rdc1 Qd4 23.Ra2 Nd3 24.Rd1 Bf5 25.Rad2 Nf4 26.Qe3 Qxe3 27.fxe3 Ne6
28.Ra1 Rb8 29.Rxa6 g5 30.Rb2 Rb4 31.h3 h5 32.Ra1 Rb6 33.Rc1 Nd8 0-1

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1955.12.29"]
[Round "3"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1-0"]
[EventDate "1955.12.27"]
[PlyCount "77"]
[ECO "D36"]

1.c4 Nf6 2.d4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Be7 7.Qc2 Nbd7 8.Bd3 
Nh5 9.Bxe7 Qxe7 10.Nge2 g6 11.O-O-O f5 12.Nf4 Nxf4 13.exf4 Qd6 14.Rhe1+ 
Kf7 15.g3 Nf6 16.Ne2 Be6 17.Ng1 Rac8 18.Nf3 Kg7 19.Kb1 Rhe8 20.Rc1 Ne4 21.
Ne5 Qb4 22.f3 Nd6 23.Qf2 Nb5 24.Bxb5 Qxb5 25.Rc3 Qb4 26.Rb3 Qe7 27.Nd3 b6 
28.Rc3 Qd6 29.Rec1 Rc7 30.Qc2 Bd7 31.b4 b5 32.a3 Re3 33.Ne5 Rxc3 34.Qxc3 
Be8 35.Kb2 Kf8 36.Re1 Re7 37.Re3 Qf6 38.Qc5 Kg8 39.Ng4 1-0

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1955.12.30"]
[Round "4"]
[White "Donner, Jan"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "60"]
[ECO "C81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 Nc5 11.Be3 O-O 12.c4 bxc4 13.Bxc4 Na5 14.Bxd5 Bxd5 
15.b4 Bxf3 16.gxf3 Qc8 17.Bxc5 Bxc5 18.bxc5 Re8 19.Nc3 f6 20.f4 fxe5 21.
fxe5 Qf5 22.Re1 Nc6 23.Qe4 Qxe4 24.Rxe4 Rxe5 25.Rxe5 Nxe5 26.Rd1 Rf8 27.
Rd5 Ng4 28.Rd7 Rxf2 29.Rxc7 Rc2 30.Ne4 h6 1/2-1/2

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.02"]
[Round "5"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "37"]
[ECO "B10"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O Nc6 8.a3 cxd4 
9.exd4 dxc4 10.Bxc4 Be7 11.Be3 a6 12.Ba2 b5 13.d5 exd5 14.Nxd5 Be6 15.
Nxe7+ Qxe7 16.b4 Rfd8 17.Qc1 Bxa2 18.Rxa2 Ne5 19.Nxe5 1/2-1/2

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.03"]
[Round "6"]
[White "Donner, Jan"]
[Black "Euwe, Machgielis"]
[Result "0-1"]
[EventDate "1955.12.27"]
[PlyCount "44"]
[ECO "E68"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.O-O Nbd7 7.Qc2 e5 8.Rd1 Re8
9.Nc3 c6 10.e4 Qc7 11.h3 b5 12.c5 dxc5 13.dxe5 Nxe5 14.Nxe5 Qxe5 15.f4 Qh5
16.e5 Bxh3 17.exf6 Bxf6 18.Ne4 Rxe4 19.Bxe4 Re8 20.Be3 Bf5 21.Qxc5 Rxe4 
22.Rd2 Qf3 0-1

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.04"]
[Round "7"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1-0"]
[EventDate "1955.12.27"]
[PlyCount "107"]
[ECO "D78"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 c6 5.O-O O-O 6.b3 Ne4 7.d4 d5 8.Bb2 a5 9.
Nfd2 Nxd2 10.Nxd2 dxc4 11.Nxc4 Nd7 12.d5 Bxb2 13.Nxb2 cxd5 14.Qxd5 Nb6 15.
Qxd8 Rxd8 16.Rfd1 Rxd1+ 17.Rxd1 Be6 18.Bxb7 Ra7 19.Bc6 Rc7 20.Be4 Kg7 21.
Kf1 g5 22.Ke1 Nd7 23.Bd5 Bf5 24.Nc4 Nf6 25.Ne3 Bc8 26.Bc4 e6 27.f3 Nd7 28.
Bb5 Ne5 29.Nc4 Nxc4 30.bxc4 e5 31.Kd2 Kf6 32.Kc3 Ke7 33.f4 gxf4 34.gxf4 
Rc5 35.Rf1 exf4 36.Rxf4 Rh5 37.h4 Be6 38.Kd4 Kd6 39.e4 Re5 40.a3 f5 41.
exf5 Bxf5 42.Bc6 Re1 43.Rxf5 Rd1+ 44.Kc3 Kxc6 45.Rxa5 Rc1+ 46.Kb3 Rb1+ 47.
Kc2 Rh1 48.Rh5 Rh3 49.a4 Kb6 50.Kb2 h6 51.Rxh6+ Ka5 52.c5 Kxa4 53.c6 Kb4 
54.Kc2 1-0

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.05"]
[Round "8"]
[White "Donner, Jan"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "32"]
[ECO "A11"]

1.Nf3 Nf6 2.c4 c6 3.Nc3 d5 4.e3 e6 5.b3 Nbd7 6.Be2 e5 7.cxd5 cxd5 8.O-O a6
9.d4 e4 10.Nd2 Bd6 11.Bb2 Qe7 12.Qe1 b5 13.a3 O-O 14.f4 exf3 15.Bxf3 Bb7 
16.e4 dxe4 1/2-1/2

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.06"]
[Round "9"]
[White "Euwe, Machgielis"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "70"]
[ECO "A56"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Be2 a6 7.f4 exf4 8.Bxf4 Nbd7 
9.Nf3 Ng4 10.h3 Nge5 11.Nxe5 Nxe5 12.Bxe5 dxe5 13.O-O Bd6 14.Bg4 O-O 15.
Bxc8 Qxc8 16.Qg4 Qxg4 17.hxg4 Kg7 18.Rf3 Rab8 19.a4 b6 20.Raf1 f6 21.Kf2 
Rb7 22.Ke2 Rbb8 23.Kd3 Rb7 24.Ra1 Ra8 25.Kc2 Rab8 26.Ra3 Rd7 27.Rb3 Rdb7 
28.Nb1 Bf8 29.Na3 Bd6 30.Rh3 Kg8 31.Nb1 Kg7 32.Nd2 Rf7 33.Rh1 Rfb7 34.Rbh3
Kg8 35.Nf3 Rf8 1/2-1/2

[Event "18th NED-ch"]
[Site "The Hague NED"]
[Date "1956.01.07"]
[Round "10"]
[White "Donner, Jan"]
[Black "Euwe, Machgielis"]
[Result "1/2-1/2"]
[EventDate "1955.12.27"]
[PlyCount "25"]
[ECO "D14"]

1.Nf3 d5 2.c4 c6 3.d4 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Qb3 
Bb4 9.Bb5 O-O 10.O-O Bxc3 11.Bxc6 Bxb2 12.Bxb7 Bxa1 13.Rxa1 1/2-1/2
