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TOURNAMENT STANDINGS
Amsterdam IBM-B Tournament
Heinz Lehmann7.5/9(+6 -0 =3)[games]
Mario Bertok5/9(+2 -1 =6)[games]
Rob Hartoch5/9(+3 -2 =4)[games]
Coenraad Zuidema5/9(+3 -2 =4)[games]
Georg Kieninger4.5/9(+1 -1 =7)[games]
Hans Ree4.5/9(+3 -3 =3)[games]
H Crabbendam3.5/9(+3 -5 =1)[games]
Arthur Dunkelblum3.5/9(+0 -2 =7)[games]
Ludwig Rellstab3.5/9(+1 -3 =5)[games]
Gerard J Kool3/9(+2 -5 =2)[games]
*

Chessgames.com Chess Event Description
Amsterdam IBM-B (1963)

Amsterdam, the Netherlands, 28 August - 7 September 1963

             Age  1 2 3 4 5 6 7 8 9 0
—————————————————————————————————————————
 1 Lehmann    41  • ½ 1 1 ½ 1 1 ½ 1 1  7½
=2 Bertok     34  ½ • ½ 1 ½ ½ 1 ½ ½ 0  5
=2 Hartoch    16  0 ½ • ½ ½ 0 1 1 ½ 1  5
=2 Zuidema    21  0 0 ½ • ½ 1 1 ½ 1 ½  5
=5 Kieninger  61  ½ ½ ½ ½ • ½ 1 ½ ½ 0  4½
=5 Ree        18  0 ½ 1 0 ½ • 0 ½ 1 1  4½
=7 Crabbendam --  0 0 0 0 0 1 • 1 ½ 1  3½
=7 Dunkelblum 57  ½ ½ 0 ½ ½ ½ 0 • ½ ½  3½
=7 Rellstab   58  0 ½ ½ 0 ½ 0 ½ ½ • 1  3½
10 Kool       25  0 1 0 ½ 1 0 0 ½ 0 •  3
—————————————————————————————————————————
Nine rounds in 11 days, starting on Wednesday 28 August. Rest days 1 & 6 September. Lehmann vs Zuidema 1-0 (Round 7) is missing (= 44 games). Lehmann won with 7½/9.

Photo (Lehmann): https://upload.wikimedia.org/wikipe...

Sources
Dutchbase (https://maxeuwe.nl/files-dutchbase/...)
Magyar Sakkélet, 10/1963, p. 149 (https://adt.arcanum.com/en/view/Sak...)
Belgian Chess History, 3rd IBM tournament (https://www.belgianchesshistory.be/...)
Dutch newspapers (available at https://www.delpher.nl/nl/kranten)

Next: Amsterdam IBM-B (1964). See also Amsterdam IBM (1963)

 page 1 of 2; games 1-25 of 44  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. H Ree vs R Hartoch  1-0621963Amsterdam IBM-BA44 Old Benoni Defense
2. C Zuidema vs L Rellstab  1-0331963Amsterdam IBM-BC75 Ruy Lopez, Modern Steinitz Defense
3. A Dunkelblum vs H Lehmann  ½-½421963Amsterdam IBM-BA40 Queen's Pawn Game
4. M Bertok vs G Kieninger  ½-½481963Amsterdam IBM-BA25 English
5. H Crabbendam vs G Kool  1-0261963Amsterdam IBM-BC47 Four Knights
6. C Zuidema vs M Bertok  0-1441963Amsterdam IBM-BB67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7
7. L Rellstab vs G Kool  1-0241963Amsterdam IBM-BE38 Nimzo-Indian, Classical, 4...c5
8. H Lehmann vs H Crabbendam  1-0291963Amsterdam IBM-BB42 Sicilian, Kan
9. G Kieninger vs H Ree  ½-½751963Amsterdam IBM-BC64 Ruy Lopez, Classical
10. R Hartoch vs A Dunkelblum  1-0441963Amsterdam IBM-BC41 Philidor Defense
11. H Crabbendam vs R Hartoch  0-1611963Amsterdam IBM-BC53 Giuoco Piano
12. M Bertok vs L Rellstab  ½-½201963Amsterdam IBM-BE17 Queen's Indian
13. A Dunkelblum vs G Kieninger  ½-½171963Amsterdam IBM-BD26 Queen's Gambit Accepted
14. G Kool vs H Lehmann  0-1471963Amsterdam IBM-BD86 Grunfeld, Exchange
15. H Ree vs C Zuidema  0-1481963Amsterdam IBM-BC86 Ruy Lopez, Worrall Attack
16. R Hartoch vs G Kool  1-0631963Amsterdam IBM-BC67 Ruy Lopez
17. G Kieninger vs H Crabbendam  1-0561963Amsterdam IBM-BB28 Sicilian, O'Kelly Variation
18. L Rellstab vs H Lehmann  0-1431963Amsterdam IBM-BB93 Sicilian, Najdorf, 6.f4
19. C Zuidema vs A Dunkelblum  ½-½241963Amsterdam IBM-BB18 Caro-Kann, Classical
20. M Bertok vs H Ree  ½-½601963Amsterdam IBM-BC64 Ruy Lopez, Classical
21. H Ree vs L Rellstab  1-0411963Amsterdam IBM-BC64 Ruy Lopez, Classical
22. H Lehmann vs R Hartoch  1-0611963Amsterdam IBM-BC95 Ruy Lopez, Closed, Breyer
23. H Crabbendam vs C Zuidema  0-1431963Amsterdam IBM-BC55 Two Knights Defense
24. A Dunkelblum vs M Bertok  ½-½241963Amsterdam IBM-BA39 English, Symmetrical, Main line with d4
25. G Kool vs G Kieninger  1-0401963Amsterdam IBM-BA44 Old Benoni Defense
 page 1 of 2; games 1-25 of 44  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2)  

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