| 21st Dutch Chess Championship :: The Hague 1961 |
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| pos. | name | flag | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | pts | + | = | - |
| 1. | Hiong Liong Tan | ● | 1 | 1 | 0 | 1 | ½ | ½ | ½ | 1 | 1 | 1 | 7½ | 6 | 3 | 1 | ||
| 2.-4. | GM Donner, Jan | 0 | ● | ½ | 1 | 1 | 1 | 1 | 0 | 0 | ½ | 1 | 6 | 5 | 2 | 3 | ||
| 2.-4. | Roessel, Fritz | 0 | ½ | ● | 1 | 1 | ½ | ½ | 1 | 0 | 1 | ½ | 6 | 4 | 4 | 2 | ||
| 2.-4. | Van den Berg, Carel | 1 | 0 | 0 | ● | 0 | ½ | ½ | 1 | 1 | 1 | 1 | 1 | 6 | 5 | 2 | 3 | |
| 5.-6. | Langeweg, Christian | 0 | 0 | 0 | 1 | ● | ½ | 1 | 1 | 1 | 0 | 1 | 5½ | 5 | 1 | 4 | ||
| 5.-6. | Van de Pol, Jan | ½ | 0 | ½ | ½ | ½ | ● | 0 | ½ | 1 | 1 | 1 | 5½ | 3 | 5 | 2 | ||
| 7.-8. | De Rooi, Paul | ½ | 0 | ½ | ½ | 0 | 1 | ● | 1 | 0 | 1 | ½ | 0 | 5 | 3 | 4 | 3 | |
| 7.-8. | Jongsma, Alexander | ½ | 1 | 0 | 0 | 0 | ½ | 0 | ● | 1 | 1 | 1 | 0 | 5 | 4 | 2 | 4 | |
| 9. | Van Donk, Henk | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | ● | 0 | 1 | 1 | 4 | 4 | 0 | 6 | |
| 10. | Branicki, Ignacy | 0 | ½ | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ● | 1 | 3½ | 3 | 1 | 6 | ||
| 11. | Jonkman, Meinard | 0 | 0 | ½ | 0 | 0 | 0 | ½ | 0 | 0 | 0 | ● | 1 | 0 | 2 | 8 | ||
| DNF | Spanjaard, Eduard | 0 | 1 | 1 | 0 | ● | Withdrawn. | |||||||||||
| 1st round — 29th April 1961 | |||||||||
| Spanjaard, Eduard | 1 - 0 | Jongsma, Alexander | |||||||
| GM Donner, Jan | 0 - 1 | Hiong Liong Tan | |||||||
| Jonkman, Meinard | ½ - ½ | De Rooi, Paul | |||||||
| Roessel, Fritz | 1 - 0 | Van den Berg, Carel | |||||||
| Van de Pol, Jan | 1 - 0 | Van Donk, Henk | |||||||
| 1.-5. Hiong Liong Tan, Roessel, Van de Pol, Branicki, Spanjaard 1; 6.-7. De Rooi, Jonkman ½; 8.-12. Donner, Van den Berg, Langeweg, Jongsma, Van Donk 0; | |||||||||
| 2nd round — 30th April 1961 | |||||||||
| Van den Berg, Carel | 1 - 0 | Spanjaard, Eduard | |||||||
| De Rooi, Paul | ½ - ½ | Roessel, Fritz | |||||||
| Langeweg, Christian | 1 - 0 | Jongsma, Alexander | |||||||
| Hiong Liong Tan | ½ - ½ | Van de Pol, Jan | |||||||
| Van Donk, Henk | 1 - 0 | Jonkman, Meinard | |||||||
| 1.-4. Hiong Liong Tan, Roessel, Van de Pol, Branicki 1½; 5.-9. Van den Berg, Langeweg, De Rooi, Van Donk, Spanjaard 1; 10.-11. Donner, Jonkman ½; 12. Jongsma 0; | |||||||||
| 3rd round — 1st May 1961 | |||||||||
| Spanjaard, Eduard | 1 - 0 | De Rooi, Paul | |||||||
| Jongsma, Alexander | 0 - 1 | Van den Berg, Carel | |||||||
| Jonkman, Meinard | 0 - 1 | Hiong Liong Tan | |||||||
| Roessel, Fritz | 0 - 1 | Van Donk, Henk | |||||||
| Van de Pol, Jan | 1 - 0 | Branicki, Ignacy | |||||||
| 1.-2. Hiong Liong Tan, Van de Pol 2½; 3.-5. Van den Berg, Van Donk, Spanjaard 2; 6.-8. Donner, Roessel, Branicki 1½; 9.-10. Langeweg, De Rooi 1; 11. Jonkman ½; 12. Jongsma 0; | |||||||||
| 4th round — 3rd May 1961 | |||||||||
| Van Donk, Henk | 1 - 0 | Spanjaard, Eduard | |||||||
| De Rooi, Paul | 1 - 0 | Jongsma, Alexander | |||||||
| GM Donner, Jan | 1 - 0 | Van de Pol, Jan | |||||||
| Langeweg, Christian | 1 - 0 | Van den Berg, Carel | |||||||
| Hiong Liong Tan | 1 - 0 | Roessel, Fritz | |||||||
| Spanjaard, Eduard | Withdrew after this round. | ||||||||
| 1. Hiong Liong Tan 3½; 2. Van Donk 3; 3.-5. Donner, Van de Pol, Branicki 2½; 6.-9. Van den Berg, Langeweg, De Rooi, Spanjaard 2; 10. Roessel 1½; 11. Jonkman ½; 12. Jongsma 0; | |||||||||
| 5th round — 5th May 1961 | |||||||||
| Jongsma, Alexander | 1 - 0 | Van Donk, Henk | |||||||
| Jonkman, Meinard | 0 - 1 | GM Donner, Jan | |||||||
| Roessel, Fritz | 1 - 0 | Branicki, Ignacy | |||||||
| Van de Pol, Jan | ½ - ½ | Langeweg, Christian | |||||||
| Van den Berg, Carel | ½ - ½ | De Rooi, Paul | |||||||
| Hiong Liong Tan | |||||||||
| 1.-2. Hiong Liong Tan, Donner 3½; 3. Van de Pol 3; 4.-7. Roessel, Langeweg, De Rooi, Branicki 2½; 8.-9. Van Donk, Spanjaard 2; 10. Van den Berg 1½; 11. Jongsma 1; 12. Jonkman ½; | |||||||||
| 6th round — 6th May 1961 | |||||||||
| GM Donner, Jan | ½ - ½ | Roessel, Fritz | |||||||
| Langeweg, Christian | 1 - 0 | De Rooi, Paul | |||||||
| Hiong Liong Tan | ½ - ½ | Jongsma, Alexander | |||||||
| Van Donk, Henk | 0 - 1 | Van den Berg, Carel | |||||||
| Van de Pol, Jan | 1 - 0 | Jonkman, Meinard | |||||||
| Branicki, Ignacy | |||||||||
| 1.-3. Hiong Liong Tan, Donner, Van de Pol 4; 4. Langeweg 3½; 5. Roessel 3; 6.-8. Van den Berg, De Rooi, Branicki 2½; 9.-10. Van Donk, Spanjaard 2; 11. Jongsma 1½; 12. Jonkman ½; | |||||||||
| 7th round — 7th May 1961 | |||||||||
| De Rooi, Paul | 0 - 1 | Van Donk, Henk | |||||||
| Jongsma, Alexander | 1 - 0 | Branicki, Ignacy | |||||||
| Jonkman, Meinard | 0 - 1 | Langeweg, Christian | |||||||
| Roessel, Fritz | ½ - ½ | Van de Pol, Jan | |||||||
| Van den Berg, Carel | 1 - 0 | Hiong Liong Tan | |||||||
| GM Donner, Jan | |||||||||
| 1.-2. Langeweg, Van de Pol 4½; 3.-4. Hiong Liong Tan, Donner 4; 5.-6. Roessel, Van den Berg 3½; 7. Van Donk 3; 8.-10. De Rooi, Jongsma, Branicki 2½; 11. Spanjaard 2; 12. Jonkman ½; | |||||||||
| 8th round — 8th May 1961 | |||||||||
| Branicki, Ignacy | 0 - 1 | Van den Berg, Carel | |||||||
| GM Donner, Jan | 0 - 1 | Jongsma, Alexander | |||||||
| Jonkman, Meinard | ½ - ½ | Roessel, Fritz | |||||||
| Langeweg, Christian | 1 - 0 | Van Donk, Henk | |||||||
| Hiong Liong Tan | ½ - ½ | De Rooi, Paul | |||||||
| Van de Pol, Jan | |||||||||
| 1. Langeweg 5½; 2.-4. Hiong Liong Tan, Van den Berg, Van de Pol 4½; 5.-6. Donner, Roessel 4; 7. Jongsma 3½; 8.-9. De Rooi, Van Donk 3; 10. Branicki 2½; 11. Spanjaard 2; 12. Jonkman 1; | |||||||||
| 9th round — 10th May 1961 | |||||||||
| De Rooi, Paul | 1 - 0 | Branicki, Ignacy | |||||||
| Jongsma, Alexander | ½ - ½ | Van de Pol, Jan | |||||||
| Roessel, Fritz | 1 - 0 | Langeweg, Christian | |||||||
| Van Donk, Henk | 0 - 1 | Hiong Liong Tan | |||||||
| Van den Berg, Carel | 0 - 1 | GM Donner, Jan | |||||||
| Jonkman, Meinard | |||||||||
| 1.-2. Hiong Liong Tan, Langeweg 5½; 3.-5. Donner, Roessel, Van de Pol 5; 6. Van den Berg 4½; 7.-8. De Rooi, Jongsma 4; 9. Van Donk 3; 10. Branicki 2½; 11. Spanjaard 2; 12. Jonkman 1; | |||||||||
| 10th round — 11th May 1961 | |||||||||
| Branicki, Ignacy | 1 - 0 | Van Donk, Henk | |||||||
| GM Donner, Jan | 1 - 0 | De Rooi, Paul | |||||||
| Jonkman, Meinard | 0 - 1 | Jongsma, Alexander | |||||||
| Langeweg, Christian | 0 - 1 | Hiong Liong Tan | |||||||
| Van de Pol, Jan | ½ - ½ | Van den Berg, Carel | |||||||
| Roessel, Fritz | |||||||||
| 1. Hiong Liong Tan 6½; 2. Donner 6; 3.-4. Langeweg, Van de Pol 5½; 5.-7. Roessel, Van den Berg, Jongsma 5; 8. De Rooi 4; 9. Branicki 3½; 10. Van Donk 3; 11. Spanjaard 2; 12. Jonkman 1; | |||||||||
| 11th round — 13th May 1961 | |||||||||
| De Rooi, Paul | 1 - 0 | Van de Pol, Jan | |||||||
| Jongsma, Alexander | 0 - 1 | Roessel, Fritz | |||||||
| Hiong Liong Tan | 1 - 0 | Branicki, Ignacy | |||||||
| Van Donk, Henk | 1 - 0 | GM Donner, Jan | |||||||
| Van den Berg, Carel | 1 - 0 | Jonkman, Meinard | |||||||
| Langeweg, Christian | |||||||||
| 1. Hiong Liong Tan 7½; 2.-4. Donner, Roessel, Van den Berg 6; 5.-6. Langeweg, Van de Pol 5½; 7.-8. De Rooi, Jongsma 5; 9. Van Donk 4; 10. Branicki 3½; 11. Spanjaard 2; 12. Jonkman 1; | |||||||||
| 21st Dutch Chess Championship | |
| Dates: | 29th April - 13th May 1961 |
| City: | The Hague (Netherlands) |
| Venue: | Caltex office building |
| Organizers: | |
| Chief Arbiter: | |
| Players participating: | 12 (incl. 1 GM) |
| Games played: | 59 |
| Competition format: | Round Robin |
| Tie-breaks: | none |
| Time control: | |
| Other websites: | Wikipedia NL Liquipedia 1961 Max Euwe Centre |
| PGN game file: | ned-1961.pgn |
|
Only seven of the fifteen players who are entitled to participate in the Dutch Championship take advantage of this. But Donner (as grandmaster the only title holder among the participants) is unable to become champion again against the weaker field. It is the Indonesian-born mathematics student Hoan Liong Tan who conquers the title in the Caltex office building in The Hague – partly thanks to a victory over Donner in the first round. |