[Event "23rd NED-ch playoff"]
[Site "Amsterdam NED"]
[Date "1965.11.06"]
[Round "1"]
[White "Prins, Lodewijk"]
[Black "Zuidema, Coenraad"]
[Result "1/2-1/2"]
[EventDate "1965.11.06"]
[PlyCount "178"]
[ECO "E25"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 Nxd5 8.dxc5
f5 9.Qc2 O-O 10.e4 fxe4 11.fxe4 Qh4+ 12.g3 Qf6 13.Bd3 Qxc3+ 14.Qxc3 Nxc3 
15.Be3 Bd7 16.Ne2 Nxe2 17.Kxe2 Bc6 18.Bf4 Nd7 19.Bd6 Rfd8 20.Ke3 Nf6 21.h3
b6 22.Rhc1 bxc5 23.Bxc5 Be8 24.e5 Nd5+ 25.Kd2 Nb6 26.Bd6 Rac8 27.Ba6 Rc6 
28.Rxc6 Bxc6 29.Rc1 Bg2 30.h4 Rd7 31.Ke3 Rf7 32.Be2 Bd5 33.a4 Bb7 34.a5 
Nd5+ 35.Kd4 Ne7 36.Kc5 a6 37.Bg4 Bc8 38.Kb4 Nd5+ 39.Ka3 Bd7 40.Be2 g6 41.
Rf1 Rxf1 42.Bxf1 Bc8 43.Bc5 Kf7 44.Kb3 Ke8 45.Bd3 Nc7 46.Kc4 Bd7 47.Be4 
Bb5+ 48.Kd4 Nd5 49.Ba3 Be2 50.Bc1 Kd7 51.Kc5 Kc7 52.Bd2 Ne7 53.Be3 Nf5 54.
Bf2 Ne7 55.Be1 Nd5 56.Bc2 Bb5 57.Bd2 Ne7 58.g4 Be2 59.g5 Bb5 60.Be1 Be2 
61.h5 Bb5 62.h6 Nf5 63.Bb3 Kd7 64.Bf2 Ne7 65.Kb6 Nc6 66.Bc2 Nxe5 67.Bg3 
Nd3 68.Bd1 Nb4 69.Bf3 Nd5+ 70.Kc5 Ke7 71.Be4 Kf7 72.Be5 Be2 73.Bc2 Bb5 74.
Bb3 Ke7 75.Bd4 Be2 76.Ba4 Bd3 77.Bc6 Kf7 78.Bb7 Ke7 79.Be5 Bb5 80.Bc8 Ne3 
81.Bd4 Nc4 82.Bf6+ Kf7 83.Bc3 Ke7 84.Bb7 Ke8 85.Be4 Kf7 86.Bb1 Ne3 87.Bd4 
Nc4 88.Bc3 Ne3 89.Be4 Nc4 1/2-1/2

[Event "23rd NED-ch playoff"]
[Site "Amsterdam NED"]
[Date "1965.11.13"]
[Round "2"]
[White "Zuidema, Coenraad"]
[Black "Prins, Lodewijk"]
[Result "1/2-1/2"]
[EventDate "1965.11.06"]
[PlyCount "91"]
[ECO "B17"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bd3 
h6 9.N5f3 c5 10.dxc5 Bxc5 11.Ne5 a6 12.Ngf3 Nbd5 13.a3 Bd6 14.c4 Nb6 15.
O-O Nbd7 16.Nxd7 Bxd7 17.b3 Qa5 18.Bb2 Qh5 19.Ne5 Qxe2 20.Bxe2 Bxe5 21.
Bxe5 Bc6 22.b4 Nd7 23.Bd4 O-O 24.a4 Rac8 25.f3 b6 26.a5 bxa5 27.Rxa5 Bb7 
28.f4 Rfd8 29.Ra3 Nb8 30.Be3 Rd7 31.Rb1 Be4 32.Rb2 Rcd8 33.Kf2 Bd3 34.Bb6 
Bxe2 35.Bxd8 Bxc4 36.Bb6 Nc6 37.Bc5 Rd1 38.Rc3 Bb5 39.Rcc2 Kh7 40.Rd2 Rf1+
41.Kg3 Kg6 42.Rf2 Re1 43.Kh4 Re4 44.g4 Rc4 45.Rbc2 Re4 46.Rb2 1/2-1/2

[Event "23rd NED-ch playoff"]
[Site "Amsterdam NED"]
[Date "1965.11.20"]
[Round "3"]
[White "Prins, Lodewijk"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[EventDate "1965.11.06"]
[PlyCount "73"]
[ECO "C35"]

1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Nc3 Bh4+ 5.Ke2 d5 6.Nxd5 Nf6 7.Nxf6+ Qxf6 8.
e5 Qe7 9.d4 O-O 10.g3 Bg5 11.gxf4 Bh6 12.Qe1 f6 13.Qh4 Qe8 14.Rg1 Kh8 15.
Kf2 fxe5 16.fxe5 Bxc1 17.Rxc1 Bf5 18.Rg3 Nc6 19.c3 Ne7 20.Kg1 h6 21.Re1 
Bh7 22.Qg4 Nf5 23.Rg2 Qe7 24.Rf2 Rad8 25.Bc4 c6 26.a4 Bg8 27.Bxg8 Kxg8 28.
Nd2 Nd6 29.Ref1 Rxf2 30.Rxf2 Ne8 31.Ne4 c5 32.Nxc5 Nc7 33.Nxb7 Rb8 34.Nd6 
Ne6 35.Nf5 Qg5 36.Qxg5 Nxg5 37.Kg2 1-0

[Event "23rd NED-ch playoff"]
[Site "Amsterdam NED"]
[Date "1965.12.04"]
[Round "4"]
[White "Zuidema, Coenraad"]
[Black "Prins, Lodewijk"]
[Result "1/2-1/2"]
[EventDate "1965.11.06"]
[PlyCount "41"]
[ECO "C10"]

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Bd3 b6 8.
Ne5 Bb7 9.Bb5+ c6 10.Qf3 Qd5 11.Qxd5 Nxd5 12.Ba4 Rc8 13.c4 Nf6 14.f3 Bd6 
15.Be3 Ke7 16.Nd3 Ba6 17.Bb3 Nd7 18.Nf4 c5 19.d5 Ne5 20.dxe6 fxe6 21.Kf2 
1/2-1/2
