[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "de Rooi, Paul"]
[Black "Dunkelblum, Arthur"]
[Result "1/2-1/2"]
[ECO "C15"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 dxe4 5. a3 Be7 6. Nxe4 Nf6 7. N2g3 O-O
8. Be3 Nc6 9. Nxf6+ Bxf6 10. c3 e5 11. d5 Ne7 12. c4 Nf5 13. Bd3 Nxe3 14. fxe3
e4 15. Bxe4 Bxb2 16. Bxh7+ Kxh7 17. Qc2+ f5 18. Qxb2 f4 19. Qe5 fxg3 20. hxg3+
Kg8 21. Qh5 Bf5 22. Qh8+ Kf7 23. Qh5+ 1/2-1/2

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Donner, Jan Hein"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "E57"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 e6 5. d4 d5 6. a3 cxd4 7. exd4 dxc4
8. Bxc4 Be7 9. O-O O-O 10. Re1 b6 11. Qd3 Bb7 12. Bg5 h6 13. Bf4 Re8 14. Rad1
Rc8 15. Ba2 Nb8 16. Ne5 Bf8 17. Bb1 Ba6 18. Qc2 g5 19. Nxf7 Kxf7 20. Qg6+ Ke7
21. Be5 Nbd7 22. Nd5+ 1-0

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "Bobotsov, Milko Georgiev"]
[Result "0-1"]
[ECO "E62"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[Source "ChessBase"]
[Round "?"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 Bg4 8. Be3
Nd7 9. Qd2 e5 10. dxe5 dxe5 11. Rad1 Nb6 12. Qxd8 Rfxd8 13. b3 Nd4 14. h3 Bxf3
15. Bxf3 c6 16. Bg2 f5 17. Bc1 e4 18. f3 exf3 19. exf3 Nxb3 20. axb3 Bxc3
21. Be3 Kf7 22. Kf2 Bf6 23. Bxb6 axb6 24. Rxd8 Rxd8 25. Ke2 Ra8 26. Rd1 Ke6
27. f4 Bc3 28. Kd3 Bb4 29. Ke3 Ra3 30. Rd3 Ra2 31. Kf3 h5 32. Bf1 Bc5 33. Be2
Rb2 34. Rd1 Rxb3+ 35. Bd3 Rb2 36. g4 h4 37. gxf5+ gxf5 38. Be2 Rc2 39. Rd8 Rc3+
40. Rd3 Rxc4 41. Re3+ Re4 42. Rxe4+ fxe4+ 43. Kxe4 Be7 44. Bg4+ Kd6 45. Kf5 b5
46. Kg6 b4 47. Bd1 c5 48. f5 Ke5 0-1

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "Darga, Klaus Viktor"]
[Result "0-1"]
[ECO "D30"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. e3 Be7 5. Nbd2 O-O 6. Bd3 c5 7. O-O cxd4
8. exd4 Nc6 9. b3 dxc4 10. Nxc4 Nb4 11. Bb1 b6 12. a3 Nbd5 13. Bb2 Bb7 14. Qd2
Rc8 15. Bd3 Nh5 16. Be4 f5 17. Bc2 Ndf4 18. Ne1 Bh4 19. Ne3 Qg5 20. f3 Ba6
21. Bd3 Bxe1 0-1

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "Filip, Miroslav"]
[Result "0-1"]
[ECO "D77"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[Source "ChessBase"]
[Round "?"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. d4 dxc4 7. Na3 Nc6
8. Nxc4 Be6 9. Nce5 Bd5 10. Nxc6 Bxc6 11. Ne1 Bxg2 12. Nxg2 c6 13. Qb3 Qb6
14. Qxb6 axb6 15. Ne1 Rfd8 16. Nc2 c5 17. e3 Ne4 18. f3 Nd6 19. dxc5 bxc5
20. a3 Nc4 21. Ra2 Nd2 22. Bxd2 Rxd2 23. Rf2 Rd3 24. Re2 b5 25. Kf2 b4 26. Ne1
Rd1 27. a4 b3 28. Ra3 c4 29. a5 Rd5 30. a6 Rd6 31. Ra4 Rc6 32. Rd2 Bf6 33. f4
Raxa6 34. Rxa6 Rxa6 35. e4 c3 36. bxc3 Bxc3 37. Rd8+ Kg7 38. Rb8 Ra1 0-1

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "Nei, Iivo"]
[Result "0-1"]
[ECO "D35"]
[WhiteTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. cxd5 exd5 6. Bg5 Be7 7. e3 Bf5
8. Bd3 Bxd3 9. Qxd3 O-O 10. O-O Nbd7 11. Nd2 h6 12. Bxf6 Bxf6 13. Rab1 a5
14. Rfc1 Re8 15. Na4 Be7 16. a3 Bd6 17. Nc3 a4 18. Ne2 Nf6 19. Nf1 g6 20. Re1
Qc7 21. f3 c5 22. dxc5 Bxc5 23. Nd4 Qb6 24. Red1 Nd7 25. b4 Bxd4 26. Qxd4 Qxd4
27. Rxd4 Nb6 28. Rc1 Rac8 29. Rc5 Nc4 30. e4 b6 31. Rxc8 Rxc8 32. exd5 Nxa3
33. b5 Ra8 34. Ne3 Nxb5 35. Rb4 Nc3 36. d6 b5 37. Nc2 Rd8 0-1

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "D11"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[Source "ChessBase"]
[Round "?"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bg4 5. O-O Nbd7 6. Bb2 e6 7. c4 Bd6 8. d4
O-O 9. Ne5 Bf5 10. Nxd7 Qxd7 11. Nd2 Rfd8 12. Nf3 h6 13. Rc1 Qe7 14. cxd5 exd5
15. Ne5 Re8 16. e3 Bxe5 17. dxe5 Ng4 18. Qd4 Qxe5 19. Qxg4 Bxg4 20. Bxe5 Rxe5
21. b4 Be2 22. Rfe1 Bb5 23. Red1 a5 24. a3 axb4 25. axb4 Ra4 26. Rd4 g6 27. h4
Kg7 28. Bf3 Ra2 29. g4 Re6 30. Rc5 Rf6 31. Bxd5 Ra1+ 32. Kh2 Rxf2+ 33. Kg3 Re2
34. Kf4 Rf1+ 35. Ke5 Rxe3+ 36. Kd6 b6 37. Rxc6 Rf6+ 38. Kc7 Rxc6+ 39. Bxc6 Rc3
40. Rd6 Bxc6 41. Rxc6 Rxc6+ 42. Kxc6 f5 43. gxf5 gxf5 44. Kd5 Kg6 45. Ke5 b5
46. Kf4 Kf6 47. h5 Ke6 48. Kf3 Ke5 0-1

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "van Scheltinga, Theo Daniël"]
[Result "1/2-1/2"]
[ECO "E16"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. c4 Nf6 2. Nf3 e6 3. d4 Bb4+ 4. Bd2 Qe7 5. Nc3 b6 6. g3 Bb7 7. Bg2 O-O
8. O-O d6 9. a3 Bxc3 10. Bxc3 Ne4 11. Qc2 Nd7 12. Ng5 Qxg5 13. Bxe4 Bxe4
14. Qxe4 d5 15. cxd5 exd5 16. Qf3 Nf6 17. Rfc1 Rfd8 18. Bb4 Rd7 19. a4 a5
20. Be1 Re8 21. Rc2 Re4 22. Bd2 Qg6 23. Rac1 h5 24. e3 Ne8 25. Rc6 Re6 26. Rxe6
fxe6 27. Qd1 Rf7 28. Qc2 Qg4 29. Qd1 Qf5 30. Qe2 Nd6 31. Be1 Ne4 32. f4 Nf6
33. Qc2 Ng4 34. Qxf5 exf5 35. Bd2 Kf8 36. h3 Nf6 37. Kg2 Ke8 38. b4 1/2-1/2

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Dunkelblum, Arthur"]
[Black "van den Berg, Carel Benjamin"]
[Result "1/2-1/2"]
[ECO "A35"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. e3 Nf6 7. Be2 O-O
8. O-O b6 9. Bf3 Bb7 10. b3 Qb8 11. Bb2 Re8 12. Qe2 e5 13. Nxc6 dxc6 14. e4 Nd7
15. Rfd1 Nc5 16. Bg4 Bc8 17. Bxc8 Qxc8 18. Qe3 Ne6 19. Ne2 Qc7 20. Rd2 Rad8
21. Rad1 Rxd2 22. Rxd2 Rd8 23. f3 Bf8 24. Kf1 f6 25. Bc3 Bc5 26. Rxd8+ Qxd8
27. Qd2 Qxd2 28. Bxd2 Kf7 29. Bc3 Be3 30. Ke1 Ke7 1/2-1/2

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Ivkov, Borislav"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "D43"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 h6 5. Bxf6 Qxf6 6. Nc3 c6 7. e3 Bd6 8. Bd3
O-O 9. O-O Nd7 10. e4 dxe4 11. Nxe4 Qe7 12. Re1 Rd8 13. Qe2 b6 14. a3 Bb7
15. Rad1 Bc7 16. Bb1 Nf6 17. Qc2 g6 18. Qc1 Kg7 19. b4 Rd7 20. Nxf6 Qxf6
21. Ne5 Rdd8 22. c5 Rd5 23. f4 Rad8 24. Qe3 Bxe5 25. fxe5 Qg5 26. Qf2 R5d7
27. Re4 Ba6 28. h4 Qe7 29. Rf4 bxc5 30. bxc5 Bc4 31. h5 g5 32. Qc2 Rh8 33. Rf6
Ba6 34. Rd2 Kf8 35. Qe4 Bb7 36. Qf3 Kg7 37. Rf2 Rf8 38. Qe4 Rh8 39. Qg6+ fxg6
40. Rxg6+ Kh7 41. Rxg5# 1-0

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Keres, Paul"]
[Black "Dunkelblum, Arthur"]
[Result "1/2-1/2"]
[ECO "C98"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

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 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Nc6 13. dxc5 dxc5 14. Nf1 Rd8
15. Qe2 Rb8 16. Ne3 g6 17. Nh2 Be6 18. Nhg4 Rd6 19. a4 c4 20. axb5 axb5 21. Qf3
Nxg4 22. hxg4 Rbd8 23. g5 Na5 24. Qg3 R6d7 25. Nd5 Bxd5 26. exd5 Rxd5 27. Be3
b4 28. Qf3 bxc3 29. bxc3 Bc5 30. Be4 R5d7 31. Ra4 Bxe3 32. Qxe3 Nb3 33. g3 Nd2
34. Kg2 Nxe4 35. Qxe4 Rc8 36. Rb4 Qc5 37. Re3 Qd5 38. Kh2 Qxe4 39. Rxe4 Rd3
1/2-1/2

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Larsen, Bent"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "A03"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. f4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d5 5. c3 O-O 6. d3 c5 7. a4 Nc6 8. Na3 d4
9. Qc2 Be6 10. O-O Rc8 11. Ng5 Bf5 12. Nc4 Nd5 13. Bd2 Qd7 14. Qb3 h6 15. Ne4
Nd8 16. Ne5 Bxe5 17. fxe5 Kg7 18. Nxc5 Rxc5 19. cxd4 Be6 20. dxc5 Nf4 21. Qb5
Nxe2+ 22. Kh1 Nc6 23. Bc3 a6 24. Qb6 Nxc3 25. bxc3 Qxd3 26. Rad1 Qxc3 27. Qxb7
Nxe5 28. Qxe7 Ng4 29. Qd6 Qe3 30. Qd4+ Kg8 31. h3 Qxd4 32. Rxd4 Ne3 33. Rc1 Rb8
34. c6 Rb2 35. Re4 1-0

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Lengyel, Levente"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "A08"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. g3 c5 2. Bg2 Nf6 3. Nf3 g6 4. O-O Bg7 5. d3 d5 6. Nbd2 O-O 7. e4 Qc7 8. c3
Nc6 9. Re1 e6 10. e5 Nd7 11. d4 b6 12. a3 Ba6 13. Nf1 Rac8 14. Ne3 cxd4
15. cxd4 Na5 16. b4 Nc6 17. h4 Ne7 18. h5 Rfe8 19. hxg6 fxg6 20. a4 Nf5
21. Nxf5 gxf5 22. b5 Bb7 23. Ng5 Nf8 24. g4 h6 25. Nh3 Qf7 26. Qf3 Ng6 27. Qg3
Rc4 28. gxf5 Qxf5 29. Bb2 Kf7 30. Ra3 Qc2 31. Rf3+ Kg8 32. Bf1 Ne7 33. Nf4 Nf5
34. Qg6 Re7 35. Nxe6 Nh4 36. Rf8# 1-0

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Parma, Bruno"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "B11"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nd7 5. Bc4 e6 6. Qe2 Be7 7. d4 Ngf6
8. Nxf6+ Nxf6 9. Bd2 Qc7 10. O-O-O O-O 11. g4 b5 12. Bd3 Bb7 13. g5 Nh5 14. Ne5
g6 15. Rhg1 Rac8 16. Kb1 Rfd8 17. Rg4 c5 18. dxc5 Bxc5 19. Bc1 Rd5 20. Re1 Bxf2
21. Qxf2 Rxe5 22. Rf1 Rd5 23. Rh4 Ng7 24. Rf4 Nf5 25. h4 Qc5 26. Qh2 Rd4
27. Rxd4 Qxd4 28. h5 gxh5 29. b3 h4 30. Re1 Ng3 31. Bb2 Qf4 32. Rf1 Qxg5
33. Bxh7+ Kf8 34. Re1 Rd8 35. Bd3 Rd5 36. Qf2 Qd8 37. Bf6 Qd6 38. Qxa7 Bc6
39. Qe3 Ke8 40. Qh6 Qf8 41. Qxh4 Nf5 42. Qh7 Kd7 43. Be4 Rc5 44. Rd1+ Nd6
45. Bb2 b4 46. Qh4 Bxe4 47. Qxe4 Qb8 48. Be5 Rc6 49. Qf4 f5 50. Qh4 Qb6
51. Qh7+ Kc8 52. Qg8+ Kb7 53. Qxe6 Qc5 54. Qd5 Qxc2+ 55. Ka1 Qe4 56. Bxd6 1-0

[Event "26th Hoogoven tournament"]
[Site "Beverwijk"]
[Date "1964.01.??"]
[White "Zuidema, Coenraad"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[ECO "C16"]
[BlackTitle "IM"]
[Source "ChessBase"]
[Round "?"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Ne2 b6 6. Nf4 Ne7 7. Qg4 g6 8. Bd3
Nf5 9. Bxf5 exf5 10. Qf3 c6 11. O-O O-O 12. Ncxd5 cxd5 13. Nxd5 Bb7 14. Nf6+
Kh8 15. Qh3 h5 16. Qe3 1-0