[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "1"]
[White "Bertok, Mario"]
[Black "Kieninger, Georg"]
[Result "1/2-1/2"]
[PlyCount "96"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Rb1 Nge7 6. b4 d6 7. b5 Nb8 8. e3
O-O 9. Nge2 Nd7 10. O-O Nb6 11. d3 Rb8 12. a4 Be6 13. Ba3 Nbc8 14. Qc2 Qd7 15.
Nd5 c6 16. bxc6 Nxc6 17. Rfc1 Rd8 18. Nec3 N6e7 19. Nb4 Nb6 20. a5 Na8 21. Nbd5
Bxd5 22. cxd5 Nc7 23. Qb3 Rdc8 24. a6 b6 25. Nb5 Ne8 26. h4 Rxc1+ 27. Rxc1 Rc8
28. Rxc8 Nxc8 29. Qc4 Ne7 30. e4 h5 31. Kh2 Kh7 32. Bh3 f5 33. Kg1 Bf6 34. Qb4
Nc8 35. d4 exd4 36. Nxd4 Ne7 37. exf5 gxf5 38. Ne6 Kg8 39. Nf4 Be5 40. Nxh5 Qc8
41. Qa4 Kf7 42. Nf4 Qc3 43. Bf1 Bxf4 44. gxf4 Qg7+ 45. Bg2 Qa1+ 46. Bf1 Qg7+
47. Kh1 Qa1 48. Kg2 Qg7+ 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "1"]
[White "Crabbendam, H."]
[Black "Kool, Gerard"]
[Result "1-0"]
[PlyCount "51"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Nxd4 6. Qxd4 d6 7. Bg5 Be7 8.
O-O-O h6 9. Bh4 O-O 10. e5 Ne8 11. Bxe7 Qxe7 12. Nd5 Qg5+ 13. f4 dxe5 14. Qc5
exf4 15. h4 Qg4 16. Ne7+ Kh7 17. Bd3+ g6 18. Nxc8 Kg7 19. Ne7 Nf6 20. Qxc7 Rad8
21. Bxg6 Rxd1+ 22. Rxd1 Qe6 23. Bd3 Qxa2 24. Nf5+ Kh8 25. Qxf4 Qa1+ 26. Kd2 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "1"]
[White "Dunkelblum, Arthur"]
[Black "Lehmann, Heinz"]
[Result "1/2-1/2"]
[PlyCount "84"]

1. d4 g6 2. g3 Bg7 3. Bg2 d6 4. c4 Nd7 5. e4 e5 6. Nf3 Ne7 7. Be3 O-O 8. dxe5
dxe5 9. Nc3 Nc6 10. Nd5 Nb6 11. Rc1 Bg4 12. Qd2 f5 13. Ng5 f4 14. gxf4 exf4 15.
Bxf4 h6 16. Nh3 Nd4 17. Ng1 Ne6 18. Bg3 c6 19. Ne3 Bh5 20. b3 Qxd2+ 21. Kxd2
Nc5 22. Kc2 a5 23. Nh3 a4 24. b4 Ne6 25. c5 Nd7 26. Bd6 Rf7 27. f4 Nd4+ 28. Kd2
Re8 29. Rcf1 Nb5 30. e5 Nb8 31. Nc4 Na6 32. a3 Bg4 33. Ne3 Be6 34. Nc2 g5 35.
fxg5 Bf5 36. Rxf5 Rxf5 37. Be4 Rfxe5 38. Bxe5 Rxe5 39. Bd3 hxg5 40. Bxb5 cxb5
41. Rg1 Bh6 42. Nf2 Nc7 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "1"]
[White "Ree, Hans"]
[Black "Hartoch, Rob"]
[Result "1-0"]
[PlyCount "123"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 a6 5. a4 g6 6. f4 Bg7 7. fxe5 Bxe5 8. Nf3 Bg4
9. Bd3 Nd7 10. O-O Ngf6 11. Bh6 Nh5 12. Nxe5 Nxe5 13. Qd2 c4 14. Be2 Bxe2 15.
Qxe2 Qd7 16. a5 Ng4 17. Bd2 Ne5 18. Na4 Rd8 19. Nb6 Qe7 20. Nxc4 Nxc4 21. Qxc4
O-O 22. Bc3 f6 23. Qd4 Rde8 24. Rae1 Qd7 25. h3 g5 26. Rf5 Re5 27. g4 Nf4 28.
Kh2 Qf7 29. Qd1 Rxf5 30. gxf5 Qe7 31. Qf3 Rc8 32. Kh1 Qf7 33. Rg1 Kf8 34. Bb4
Ke7 35. Qa3 Rd8 36. Qf3 Rc8 37. Qa3 Rd8 38. Bd2 Nh5 39. c4 Ke8 40. Qf3 Ng7 41.
b4 Rc8 42. Rc1 Qh5 43. Kg2 Qxf3+ 44. Kxf3 Kd7 45. Be3 h5 46. Bd4 Ne8 47. Bb2
Rb8 48. Ke3 Rc8 49. c5 Rb8 50. Kd3 Rc8 51. Bd4 Rc7 52. Rc4 Rc8 53. Bg1 Rc7 54.
Bh2 h4 55. Bg1 Rc8 56. Bd4 Rc7 57. Rc2 Rc8 58. Rc1 Rc7 59. Rg1 Ke7 60. cxd6+
Kxd6 61. Bc5+ Kd7 62. e5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "1"]
[White "Zuidema, Coen"]
[Black "Rellstab, Ludwig"]
[Result "1-0"]
[PlyCount "65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nge7 7. Nbd2 g6 8. dxe5
Nxe5 9. Nxe5 dxe5 10. b4 Bg7 11. O-O O-O 12. Bxd7 Qxd7 13. Nb3 Qxd1 14. Rxd1
Rfd8 15. Be3 b6 16. a4 Kf8 17. a5 bxa5 18. Nxa5 Rxd1+ 19. Rxd1 Ke8 20. Nb7 Nc6
21. Ra1 Rb8 22. Nc5 a5 23. Na6 Rb7 24. b5 Nb8 25. Kf1 c6 26. Nxb8 Rxb8 27. b6
Bf8 28. Rxa5 f6 29. Ke2 c5 30. Kd3 Bd6 31. Rb5 Kd7 32. Kc4 Kc6 33. Bxc5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "2"]
[White "Hartoch, Rob"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]
[PlyCount "87"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. h3
Qc7 9. Be3 exd4 10. Nxd4 Ne5 11. Be2 Re8 12. f4 Ng6 13. Bd3 Bd7 14. Qf3 a6 15.
b3 c5 16. Nde2 Bc6 17. g4 Bf8 18. g5 Nd7 19. Ng3 Kh8 20. Rae1 Rab8 21. Qe2 Nb6
22. a5 Nc8 23. Ra1 Qd7 24. Kh2 Na7 25. Qd2 Nb5 26. Na4 Nc7 27. Nb6 Qd8 28. c4
Na8 29. Nd5 Nc7 30. Qf2 Nxd5 31. exd5 Bd7 32. Bc2 Qc8 33. f5 Ne5 34. Bf4 f6 35.
Rae1 Be7 36. Bxe5 dxe5 37. gxf6 gxf6 38. Ne4 Qc7 39. Rd1 Qxa5 40. d6 Bd8 41.
Rg1 Bb6 42. Qh4 Rf8 43. Nxf6 Rf7 44. Qg5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "2"]
[White "Kieninger, Georg"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[PlyCount "149"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nf6 5. d3 Qe7 6. O-O O-O 7. Bg5 h6 8. Bc1
d6 9. Nbd2 Nd8 10. Ba4 c6 11. Bc2 Bb6 12. Nc4 Bc7 13. Ne3 g6 14. Re1 Nh7 15.
Nf1 Kg7 16. Qd2 g5 17. Ng3 Kg8 18. Qe2 Qf6 19. Nd2 Ne6 20. Ndf1 Nf4 21. Qd1 g4
22. Ne3 h5 23. Nef5 Qg5 24. d4 h4 25. Nf1 Bxf5 26. exf5 Rfe8 27. g3 hxg3 28.
fxg3 Nh3+ 29. Kg2 Qg7 30. dxe5 dxe5 31. Qe2 Nf6 32. Be3 Nf4+ 33. gxf4 exf4 34.
Qf2 fxe3 35. Rxe3 Bb6 36. Rxe8+ Rxe8 37. Qd2 Qh7 38. Kh1 Qh3 39. Ng3 Re3 40.
Qg2 Qxg2+ 41. Kxg2 Bc7 42. Rf1 Nd5 43. Bb3 Bxg3 44. Bxd5 Bxh2 45. Kxh2 cxd5 46.
Rd1 Re2+ 47. Kg3 Rxb2 48. Kxg4 Kg7 49. Kg5 Rg2+ 50. Kf4 Rxa2 51. Rxd5 Kf6 52.
Rd6+ Ke7 53. Rd3 Ra4+ 54. Kg5 f6+ 55. Kh5 Rf4 56. Rd5 Rc4 57. Rd3 b5 58. Re3+
Kd7 59. Kg6 Rc6 60. Kf7 a5 61. Re7+ Kd8 62. Re6 Rxc3 63. Kxf6 a4 64. Ra6 a3 65.
Ke6 b4 66. Ra8+ Kc7 67. Ra4 Rc6+ 68. Ke7 Rb6 69. f6 Kc6 70. f7 Rb7+ 71. Ke6
Rxf7 72. Kxf7 Kb5 73. Ra8 Kc4 74. Ke6 b3 75. Ra4+ 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "2"]
[White "Lehmann, Heinz"]
[Black "Crabbendam, H."]
[Result "1-0"]
[PlyCount "57"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. O-O Nc6 8. c4
d6 9. Nc3 Nf6 10. Bf4 h6 11. Qd2 Ne5 12. Be2 Qc7 13. Rfd1 Ke7 14. Rac1 Bd7 15.
c5 dxc5 16. Na5 b6 17. Nc4 Nxc4 18. Bxc4 e5 19. Nd5+ Nxd5 20. exd5 Kf8 21. d6
Qd8 22. Bxe5 b5 23. Bd5 Rb8 24. Re1 Rh7 25. Bc3 Qg5 26. Re7 Qxd2 27. Rxf7+ Kg8
28. Rxg7+ Kf8 29. Rg8# 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "2"]
[White "Rellstab, Ludwig"]
[Black "Kool, Gerard"]
[Result "1-0"]
[PlyCount "47"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Na6 6. Bd2 Bxc5 7. a3 O-O 8. b4
Be7 9. e4 d5 10. Nf3 dxe4 11. Nxe4 b6 12. Bd3 Bb7 13. O-O h6 14. Rfd1 Qc7 15.
Rac1 Rfd8 16. Bc3 Qf4 17. Be5 Qg4 18. h3 Qh5 19. Bxf6 Rxd3 20. Qxd3 Bxf6 21.
Nxf6+ gxf6 22. Rc3 Kh8 23. Qd4 e5 24. Qg4 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "2"]
[White "Zuidema, Coen"]
[Black "Bertok, Mario"]
[Result "0-1"]
[PlyCount "88"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8.
O-O-O Bd7 9. f4 b5 10. Bxf6 gxf6 11. f5 Nxd4 12. Qxd4 Bh6+ 13. Kb1 Bf4 14. fxe6
fxe6 15. Be2 h5 16. Qf2 Be5 17. Rd3 Ke7 18. Rh3 Be8 19. g4 b4 20. Nd1 Bg6 21.
Qe3 hxg4 22. Bxg4 a5 23. Nf2 Qc7 24. Rxh8 Rxh8 25. h4 Qc5 26. Qxc5 dxc5 27. h5
Bh7 28. Bf3 c4 29. Rg1 Bd4 30. Rg7+ Kd6 31. Ng4 f5 32. e5+ Bxe5 33. Nxe5 Kxe5
34. Ra7 f4 35. Kc1 Kd4 36. Rxa5 e5 37. Kd2 c3+ 38. bxc3+ bxc3+ 39. Ke2 Bxc2 40.
Rd5+ Kc4 41. Rxe5 Bd3+ 42. Kd1 Rb8 43. Re4+ Bxe4 44. Bxe4 Kd4 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "3"]
[White "Bertok, Mario"]
[Black "Rellstab, Ludwig"]
[Result "1/2-1/2"]
[PlyCount "39"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Nxe4
Bxe4 9. d5 exd5 10. cxd5 c5 11. Bf4 d6 12. Ne1 Bxg2 13. Nxg2 Bg5 14. Qd2 Bxf4
15. Qxf4 Nd7 16. Qxd6 Nf6 17. Qf4 Re8 18. Ne3 Nxd5 19. Nxd5 Qxd5 20. Rfd1
1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "3"]
[White "Crabbendam, H."]
[Black "Hartoch, Rob"]
[Result "0-1"]
[PlyCount "122"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 O-O 6. b4 Bb6 7. a4 a6 8. Bg5 d6
9. Nbd2 Be6 10. O-O Ne7 11. Bxe6 fxe6 12. d4 exd4 13. Nxd4 Qd7 14. Qb3 Bxd4 15.
cxd4 Kh8 16. f3 Ng6 17. Rac1 Rac8 18. Rc3 Nh5 19. g3 Nf6 20. Rfc1 d5 21. e5 Ng8
22. Qc2 Rf7 23. Be3 Qe8 24. Kg2 N6e7 25. Bf2 Nf5 26. f4 Qf8 27. Qb1 g5 28. Nf3
gxf4 29. gxf4 Ngh6 30. h3 Ng7 31. Ng5 Nhf5 32. Nxf7+ Qxf7 33. Qd3 Nh5 34. Qf3
Rg8+ 35. Kh2 c6 36. b5 Nhg3 37. bxc6 Nh4 38. Qe3 Nhf5 39. Qd2 Ne4 40. Qe1 Nxc3
41. Rxc3 bxc6 42. Bh4 h6 43. Bf6+ Kh7 44. Rxc6 Nxd4 45. Qb1+ Nf5 46. Qc2 Qg6
47. Rc7+ Ng7 48. Qg2 Qxg2+ 49. Kxg2 Kg6 50. Ra7 Nh5 51. Kf3 Kf5 52. Bh4 Rb8 53.
Rxa6 Rb3+ 54. Kf2 Rxh3 55. Be7 Nxf4 56. Bd6 Ke4 57. a5 Rh2+ 58. Kg1 Ra2 59. Ra8
d4 60. a6 d3 61. Bb4 d2 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "3"]
[White "Dunkelblum, Arthur"]
[Black "Kieninger, Georg"]
[Result "1/2-1/2"]
[PlyCount "34"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. dxc5 Qxd1 8.
Rxd1 Bxc5 9. a3 a6 10. b4 Ba7 11. Bb2 b5 12. Be2 Bb7 13. Nbd2 O-O 14. Nb3 Rfd8
15. Kf1 Kf8 16. Rxd8+ Nxd8 17. Rc1 Rc8 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "3"]
[White "Kool, Gerard"]
[Black "Lehmann, Heinz"]
[Result "0-1"]
[PlyCount "94"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8.
Ne2 b6 9. O-O Ba6 10. Bxa6 Nxa6 11. Qa4 Qc8 12. Be3 c5 13. Nf4 cxd4 14. cxd4
Qb7 15. Rac1 Rfc8 16. Qb5 Rxc1 17. Rxc1 Rc8 18. Nd5 Kf8 19. e5 Nb8 20. Rxc8+
Qxc8 21. Bg5 Nc6 22. Qc4 Qd7 23. Qb5 Ke8 24. Be3 Na5 25. Nc3 e6 26. h4 Bf8 27.
Qd3 Nc6 28. Qc4 Bb4 29. Ne4 Be7 30. h5 gxh5 31. f3 Nb4 32. Bg5 Qc6 33. Qb3 Bxg5
34. Qxb4 Be7 35. Qd2 Qc4 36. Kh2 a5 37. Qf4 Qxa2 38. Qh6 Qd5 39. Qxh7 Qxd4 40.
Qxh5 Kd7 41. Qh8 Kc7 42. Kh3 Qd1 43. Kh2 Qd8 44. Qh6 a4 45. Qc1+ Kb7 46. Qc4 a3
47. Qa4 Qc7 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "3"]
[White "Ree, Hans"]
[Black "Zuidema, Coen"]
[Result "0-1"]
[PlyCount "95"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Qe2 b5 7. Bb3 d6 8. c3
Na5 9. Bc2 c5 10. d4 Qc7 11. Rd1 O-O 12. Bg5 Re8 13. dxe5 dxe5 14. Nbd2 Nh5 15.
Be3 Bb7 16. g3 Rad8 17. Nf1 Nc4 18. b3 Na3 19. Ne1 Nxc2 20. Qxc2 c4 21. b4 Nf6
22. f3 Nd7 23. Qf2 Bc6 24. Rd2 Ra8 25. a3 a5 26. Rda2 Ra6 27. Nc2 Rea8 28. Nd2
Bb7 29. Nb1 Nb6 30. Kg2 Na4 31. Ne1 Rd8 32. Rd2 Rf8 33. Raa2 axb4 34. axb4 f5
35. exf5 Rxf5 36. Qf1 Raf6 37. Rf2 Rf8 38. Qe2 R5f7 39. Rc2 e4 40. f4 Bf6 41.
Kg1 Rd7 42. Rc1 Rd3 43. Nxd3 exd3 44. Qf1 Qc6 45. Qg2 Qd7 46. Qf1 Re8 47. Bd2
Bd8 48. Re1 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "4"]
[White "Bertok, Mario"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[PlyCount "120"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nf6 5. d4 Bb6 6. dxe5 Nxe4 7. O-O O-O 8.
Qd5 Nc5 9. Bg5 Qe8 10. Re1 a6 11. Bc4 Qe6 12. Na3 Qxd5 13. Bxd5 Nd3 14. Re2 h6
15. Bh4 Nf4 16. Rd2 Re8 17. Bg3 Nxd5 18. Rxd5 Ne7 19. Rd2 Nf5 20. Nc4 Bc5 21.
a4 Nxg3 22. hxg3 f6 23. exf6 gxf6 24. Nd4 d5 25. Ne3 c6 26. b4 Bd6 27. a5 Re4
28. Re1 Bd7 29. Nec2 Rae8 30. Rxe4 Rxe4 31. Kf1 Bc7 32. Re2 c5 33. Rxe4 dxe4
34. bxc5 Bxa5 35. Nb4 Kf7 36. Ke2 Bc7 37. c6 bxc6 38. Nxa6 Bd6 39. Nb3 Be6 40.
Nac5 Bc4+ 41. Ke3 f5 42. Kd4 Bf1 43. Na5 Bxg2 44. Nc4 Bf8 45. Ne5+ Kg8 46. Ne6
Bd6 47. Nc4 e3 48. Nxe3 Be4 49. Nc5 Bb1 50. Nc4 Bc7 51. Ne5 Bb6 52. Nxc6 f4 53.
g4 h5 54. gxh5 Kg7 55. Ne7 Kh6 56. Nd5 Bxc5+ 57. Kxc5 Kxh5 58. Nb6 Kg4 59. Kd4
Kf3 60. Ke5 Ba2 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "4"]
[White "Hartoch, Rob"]
[Black "Kool, Gerard"]
[Result "1-0"]
[PlyCount "125"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5
8. Qxd8+ Kxd8 9. Nc3 Ke8 10. Bf4 Be6 11. Rfd1 h6 12. h3 Bb4 13. g4 Ne7 14. Nd4
Bxc3 15. Nxe6 fxe6 16. bxc3 g5 17. Bg3 Ng6 18. Rd4 Rd8 19. Ra4 Ra8 20. Rc4 Ne7
21. f4 Rd8 22. Ra4 gxf4 23. Bh4 Ra8 24. Bf6 Rg8 25. Rxf4 Rd8 26. Raf1 Nd5 27.
R4f3 Rd7 28. Kh2 Rf7 29. Kg3 Rg6 30. c4 Nxf6 31. exf6 e5 32. Rf5 Kd7 33. h4 Ke6
34. g5 b5 35. Kg4 Rg8 36. R5f3 a5 37. cxb5 cxb5 38. Rc3 Rd7 39. Rc6+ Kf7 40.
Kf5 e4 41. Rc5 c6 42. Rg1 Rg6 43. Kxe4 Rd6 44. Rf1 Re6+ 45. Kd3 Rg8 46. Rf4
Rge8 47. Rd4 hxg5 48. hxg5 Re3+ 49. Kd2 Re2+ 50. Kc1 Re1+ 51. Kb2 R8e6 52. Rd7+
Kf8 53. g6 Rxf6 54. g7+ Kg8 55. Rg5 Re8 56. Rh5 Rf7 57. Rxf7 Kxf7 58. Rh8 Rg8
59. Rxg8 Kxg8 60. Kc3 c5 61. Kd3 Kxg7 62. Ke4 Kf7 63. Kd5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "4"]
[White "Kieninger, Georg"]
[Black "Crabbendam, H."]
[Result "1-0"]
[PlyCount "111"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. g3 b5 6. Bg2 Bb7 7. O-O Qc7 8. Re1
d6 9. c3 Nd7 10. a4 bxa4 11. Qxa4 Ngf6 12. Nd2 e5 13. N4b3 Bc6 14. Qa2 Nb6 15.
Na5 Bd7 16. c4 Na4 17. b4 Be7 18. Qb3 Nb6 19. Bb2 O-O 20. Rec1 Be6 21. Nf1 Rfc8
22. Ne3 Qb8 23. Qd3 Ra7 24. Bc3 Rac7 25. Bd2 h6 26. h3 Bf8 27. Kh2 g6 28. Qe2
Kg7 29. Nd5 Nfxd5 30. exd5 Bd7 31. Nc6 Bxc6 32. dxc6 Ra7 33. Ra5 f5 34. Rca1 e4
35. b5 d5 36. cxd5 Nxd5 37. Rxa6 Rxa6 38. Rxa6 Re8 39. Qc4 Qe5 40. Ra7+ Kh8 41.
Rd7 Nb6 42. Qc3 Bg7 43. Qxe5 Bxe5 44. Ba5 Nc4 45. Bc7 e3 46. fxe3 Bxc7 47. Rxc7
Rxe3 48. Rd7 g5 49. c7 Nb6 50. Rd6 Rc3 51. Rxh6+ Kg7 52. Rxb6 Rxc7 53. Rb7 Rxb7
54. Bxb7 Kf6 55. b6 Ke5 56. Bc8 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "4"]
[White "Rellstab, Ludwig"]
[Black "Lehmann, Heinz"]
[Result "0-1"]
[PlyCount "86"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 g6 8. Nf3
Bg7 9. O-O O-O 10. Kh1 Nbd7 11. Qe1 e5 12. fxe5 dxe5 13. Qh4 b5 14. Bh6 Bb7 15.
Ng5 Rae8 16. Rae1 Nh5 17. Bxg7 Kxg7 18. Nxh7 Rh8 19. Ng5 Nf4 20. Qg3 Nc5 21.
Nd5 Bxd5 22. exd5 Ncxd3 23. cxd3 Qc5 24. Qf3 Rh5 25. Nh3 Rhh8 26. Rxe5 Rxe5 27.
Nxf4 Qe7 28. h3 Rf5 29. g4 Rxf4 30. Qxf4 Rxh3+ 31. Kg2 Rxd3 32. Rf2 Rxd5 33.
Qf3 Rd4 34. Qg3 Qe4+ 35. Kh2 Rd3 36. Qc7 Qd5 37. Qf4 Rd1 38. Qf6+ Kg8 39. Rg2
Qe4 40. a3 Qe1 41. Qf2 Qh1+ 42. Kg3 Rd3+ 43. Kf4 Qc1+ 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "4"]
[White "Zuidema, Coen"]
[Black "Dunkelblum, Arthur"]
[Result "1/2-1/2"]
[PlyCount "47"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. Bd3
Bxd3 9. Qxd3 Qc7 10. Bd2 e6 11. O-O-O Ngf6 12. Kb1 O-O-O 13. c4 c5 14. Qe2 Bd6
15. Ne4 Nxe4 16. Qxe4 Nf6 17. Qe2 Kb8 18. Bc3 cxd4 19. Nxd4 a6 20. Rc1 Ka8 21.
Rc2 Rd7 22. c5 Qxc5 23. Nxe6 fxe6 24. Bxf6 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "5"]
[White "Crabbendam, H."]
[Black "Zuidema, Coen"]
[Result "0-1"]
[PlyCount "86"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O d6 6. c3 O-O 7. Nbd2 Na5 8. Re1
Nxc4 9. Nxc4 Re8 10. d4 exd4 11. Nxd4 d5 12. exd5 Nxd5 13. Qf3 c6 14. Bf4 Bc5
15. Bd6 Rxe1+ 16. Rxe1 Bxd4 17. cxd4 Be6 18. Be5 Qg5 19. a3 Nf6 20. Bxf6 gxf6
21. Nd6 Kg7 22. Ne4 Qg6 23. Ng3 Rd8 24. Nh5+ Kh8 25. Nxf6 Rxd4 26. h3 Rd3 27.
Qf4 Kg7 28. Re5 h6 29. Nh5+ Kf8 30. Ng3 Bd5 31. Re1 h5 32. Qb8+ Kg7 33. Qe5+
Kh6 34. Nf5+ Kh7 35. Ng3 h4 36. Ne4 Bxe4 37. Rxe4 Rxh3 38. Qd4 Qg5 39. f4 Qg6
40. Qe5 Rg3 41. Re2 h3 42. f5 Rxg2+ 43. Kf1 Qg4 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "5"]
[White "Dunkelblum, Arthur"]
[Black "Bertok, Mario"]
[Result "1/2-1/2"]
[PlyCount "47"]

1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. Nc3 Nf6 5. g3 O-O 6. Bg2 Nc6 7. O-O cxd4 8.
Nxd4 Nxd4 9. Qxd4 d6 10. Qd3 Qa5 11. e4 Bd7 12. Bd2 Qh5 13. f3 Rfc8 14. Be3 Qa5
15. Bd4 a6 16. Rfc1 b5 17. cxb5 axb5 18. f4 Rab8 19. a3 b4 20. axb4 Qxb4 21. e5
Bf5 22. Qd1 dxe5 23. fxe5 Bg4 24. Qd3 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "5"]
[White "Kool, Gerard"]
[Black "Kieninger, Georg"]
[Result "1-0"]
[PlyCount "79"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Bd3 Ne7 5. Bg5 a6 6. a4 Qc7 7. Nd2 Ng6 8. Ne2 Nd7
9. c4 h6 10. Be3 Be7 11. O-O Bg5 12. Nf3 Nf4 13. Bxf4 exf4 14. h4 Bf6 15. Nxf4
Bxb2 16. Ra2 Be5 17. Nh5 O-O 18. Nxe5 Nxe5 19. f4 Bg4 20. Be2 Bxh5 21. fxe5
Bxe2 22. exd6 Bxd1 23. dxc7 Bg4 24. Rb1 Ra7 25. Rb6 f6 26. Rab2 Rf7 27. d6 Bc8
28. Rd2 Kf8 29. Rd5 Ke8 30. Rxc5 Kd7 31. a5 Ke6 32. Rd5 Kd7 33. Kf2 Rf8 34. Ke3
Ra8 35. Rd1 Re8 36. Kd4 Re5 37. c5 Ra7 38. g4 Ra8 39. Rg1 Re8 40. g5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "5"]
[White "Lehmann, Heinz"]
[Black "Hartoch, Rob"]
[Result "1-0"]
[PlyCount "121"]

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 Nb8 10. d4 Nbd7 11. c4 c6 12. c5 Qc7 13. cxd6 Bxd6 14. Bg5 Bb7 15.
Nc3 exd4 16. Qxd4 c5 17. Qd2 c4 18. Bc2 Rfe8 19. Rad1 Be5 20. Nxe5 Qxe5 21. f4
Qc5+ 22. Kh2 h6 23. Bxf6 Nxf6 24. e5 Nh7 25. Ne4 Bxe4 26. Bxe4 Ra7 27. Qd6 Qf2
28. Bf3 Nf8 29. Re2 Qh4 30. Bc6 Rc8 31. g3 Qe7 32. a4 Qxd6 33. Rxd6 b4 34. Rc2
c3 35. bxc3 b3 36. Rb2 Rac7 37. Bd5 Rxc3 38. Bxb3 Re3 39. Bd5 a5 40. Ra6 Rc5
41. Rd2 Rcc3 42. Ra8 g5 43. Bg2 gxf4 44. gxf4 Red3 45. Rf2 Re3 46. Bf1 f6 47.
Bg2 Rcd3 48. Rxa5 Kg7 49. Ra7+ Rd7 50. Rxd7+ Nxd7 51. Bc6 Nc5 52. Rg2+ Kf8 53.
exf6 Re6 54. Bb5 Rxf6 55. Kg3 Ke7 56. Kg4 Rg6+ 57. Kf3 Rd6 58. f5 Rd5 59. Kf4
Nxa4 60. Re2+ Kf6 61. Re6+ 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "5"]
[White "Ree, Hans"]
[Black "Rellstab, Ludwig"]
[Result "1-0"]
[PlyCount "82"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 Qe7 8.
Na3 Nf6 9. Nc4 O-O 10. Bg5 d6 11. Ba4 exd4 12. cxd4 Qxe4 13. Bxf6 gxf6 14. Bc2
Qxd4 15. Qh5 f5 16. Ne3 Qg7 17. Rad1 Bxe3 18. fxe3 Qg4 19. Qh6 Qg6 20. Qh4 Kh8
21. Rf3 Rg8 22. Rg3 Qe6 23. Qd4+ Qe5 24. Qxe5+ dxe5 25. Rxg8+ Kxg8 26. Rd8+ Kg7
27. Bxf5 Bxf5 28. Rxa8 a6 29. Rb8 Be6 30. Rxb7 Bxa2 31. Rxc7 Bb1 32. Kf2 Bd3
33. Ke1 Kg6 34. Kd2 Bb5 35. Kc3 h5 36. Kb4 f6 37. Kc5 Bf1 38. g3 Kf5 39. Kd5
Bg2+ 40. Kd6 Ke4 41. Rc3 Bf1 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "6"]
[White "Bertok, Mario"]
[Black "Crabbendam, H."]
[Result "1-0"]
[PlyCount "87"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. cxd5 exd5 6. Nc3 c6 7. Nf3 Be7 8.
O-O O-O 9. Qc2 Re8 10. Bf4 Nf8 11. Ne5 Ne6 12. Rad1 Nxf4 13. gxf4 Bd6 14. Kh1
Ng4 15. Qd3 f6 16. Nxg4 Bxg4 17. f5 Bc7 18. h3 Bh5 19. Rde1 Qd6 20. f4 Rad8 21.
a3 Rd7 22. Bf3 Bxf3+ 23. Rxf3 Rde7 24. Rg1 b5 25. e3 b4 26. Na4 Bb6 27. Rc1 Re4
28. Kg2 bxa3 29. bxa3 Qd7 30. Kf2 Qxf5 31. Nxb6 axb6 32. Rxc6 Qd7 33. Qb5 f5
34. Rxb6 Qd8 35. Qc5 h6 36. Rd6 Qh4+ 37. Ke2 Qh5 38. Qxd5+ Kh7 39. Kf2 Qh4+ 40.
Kg2 Qe1 41. Qxf5+ Kh8 42. Rg3 Qe2+ 43. Kh1 R4e7 44. Rxh6+ 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "6"]
[White "Kieninger, Georg"]
[Black "Lehmann, Heinz"]
[Result "1/2-1/2"]
[PlyCount "100"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bc4 c6 5. a4 Nf6 6. Bb3 O-O 7. Nge2 Nbd7 8. f3
e5 9. Be3 Qe7 10. Qd2 Re8 11. O-O Nf8 12. Rad1 b6 13. Rfe1 Bb7 14. d5 c5 15.
Nb5 Reb8 16. Bh6 Bc8 17. c4 Ne8 18. Bc2 Bd7 19. Na3 Nc7 20. Nc3 Bxh6 21. Qxh6
f6 22. Qd2 a6 23. Bd3 g5 24. b3 Ng6 25. g3 Rb7 26. Ra1 Rf8 27. Rf1 Ne8 28. Nc2
Ng7 29. Ne3 Qd8 30. Nf5 Bc8 31. Kg2 Ne7 32. Nxg7 Kxg7 33. Rh1 Ng6 34. Nd1 Bd7
35. Ne3 Ne7 36. Nf5+ Nxf5 37. exf5 Qc8 38. g4 b5 39. axb5 axb5 40. h4 h6 41.
hxg5 hxg5 42. Rh5 bxc4 43. Bxc4 Qe8 44. Rah1 Rg8 45. Rh7+ Kf8 46. Kg3 Bc8 47.
Rxb7 Bxb7 48. Rh7 Rg7 49. Rh8+ Rg8 50. Qh2 Qd7 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "6"]
[White "Ree, Hans"]
[Black "Dunkelblum, Arthur"]
[Result "1/2-1/2"]
[PlyCount "53"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Bd3 Bxd3 8.
Qxd3 e6 9. Nf3 Nd7 10. Bf4 Ngf6 11. O-O-O Nd5 12. Bd2 Qc7 13. c4 N5f6 14. Kb1
O-O-O 15. Bc3 Bd6 16. Ne4 Be7 17. Rde1 Nxe4 18. Qxe4 Bf6 19. c5 Be7 20. Qc2 b6
21. cxb6 axb6 22. Rc1 Kb7 23. Qb3 Qf4 24. Nd2 Rhe8 25. Nc4 Qf5+ 26. Ka1 Qb5 27.
g3 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "6"]
[White "Rellstab, Ludwig"]
[Black "Hartoch, Rob"]
[Result "1/2-1/2"]
[PlyCount "125"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. Ng5
O-O 9. f4 Nd4 10. Nf3 Bg4 11. Kh1 Nh5 12. fxe5 dxe5 13. Be3 Bxf3 14. gxf3 Nxb3
15. axb3 Bg5 16. Bxg5 Qxg5 17. Nc3 Nf4 18. Qd2 c6 19. Qf2 Rfe8 20. Ne2 Nxe2 21.
Qxe2 Re6 22. Rf2 c5 23. Rg2 Qe7 24. Rag1 Rg6 25. Qe3 Qd6 26. Rxg6 hxg6 27. Rf1
Qd4 28. Qxd4 cxd4 29. b4 a5 30. bxa5 Rxa5 31. Kg2 g5 32. Kf2 b4 33. Ke2 Ra2 34.
Rb1 Kh7 35. Kf2 Kh6 36. Kg3 Kh5 37. Kh3 Ra6 38. b3 Ra2 39. Rc1 g6 40. Kg3 f5
41. h3 Ra5 42. Rb1 Rc5 43. Rb2 Ra5 44. Rb1 Ra2 45. Rc1 Rb2 46. Kg2 Kh4 47. Kf2
g4 48. hxg4 fxg4 49. fxg4 Kxg4 50. Ke2 g5 51. Rg1+ Kh5 52. Rh1+ Kg6 53. Kd2 Ra2
54. Rh8 g4 55. Re8 Ra5 56. Ke2 Rc5 57. Kf2 Rxc2+ 58. Kg3 Rc3 59. Rxe5 Rxb3 60.
Rb5 Rxd3+ 61. Kxg4 b3 62. Kf4 Re3 63. Rb4 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "6"]
[White "Zuidema, Coen"]
[Black "Kool, Gerard"]
[Result "1/2-1/2"]
[PlyCount "112"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5
8. Qxd8+ Kxd8 9. Nc3 Ke8 10. Ne2 Be6 11. Nf4 Bd5 12. Nxd5 cxd5 13. g4 Ne7 14.
Bf4 c6 15. Rad1 h6 16. Bg3 g5 17. Nd4 h5 18. h3 hxg4 19. hxg4 Ng6 20. Rfe1 Bc5
21. Nf5 Rh7 22. e6 fxe6 23. Rxe6+ Ne7 24. Rde1 Kd7 25. Nxe7 Rxe7 26. Rxe7+ Bxe7
27. Kg2 Bf6 28. f4 gxf4 29. Bxf4 b5 30. b3 Rg8 31. Kf3 a5 32. g5 Bc3 33. Rh1
Bg7 34. Kg4 Ke6 35. Re1+ Kf7 36. Kf5 Bc3 37. Re6 Rc8 38. Bd6 a4 39. Re7+ Kg8
40. Rc7 Rxc7 41. Bxc7 axb3 42. axb3 c5 43. Be5 Bd2 44. Bf4 Bc3 45. Be5 Bd2 46.
Bf4 Bc3 47. Ke6 c4 48. bxc4 dxc4 49. Kd5 Kf7 50. Kc5 b4 51. Kxc4 Kg6 52. Kd3
Bg7 53. Bd2 Bf8 54. Kc4 Be7 55. Bxb4 Bxg5 56. Kd5 Kf7 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "7"]
[White "Crabbendam, H."]
[Black "Ree, Hans"]
[Result "1-0"]
[PlyCount "63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Nxe5 Nd4 5. Be2 Qg5 6. Ng4 d5 7. exd5 f5 8.
c3 fxg4 9. cxd4 Bd6 10. Bb5+ c6 11. Qe2+ Ne7 12. dxc6 O-O 13. Nc3 bxc6 14. Bc4+
Kh8 15. Ne4 Qg6 16. Nxd6 Qxd6 17. Qe5 Qg6 18. O-O Re8 19. b3 Nf5 20. Qf4 Nd6
21. Ba3 Nxc4 22. bxc4 Ba6 23. Rac1 Re4 24. Qc7 Rxd4 25. Bc5 Rxd2 26. Qa5 Qg5
27. Qa3 Bb7 28. Be3 Qd8 29. Bxd2 Qxd2 30. Rfd1 Qf4 31. Qd6 Qg5 32. Rb1 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "7"]
[White "Dunkelblum, Arthur"]
[Black "Rellstab, Ludwig"]
[Result "1/2-1/2"]
[PlyCount "48"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. d4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2
Nxd2 9. Qxd2 d6 10. Ne1 Bxg2 11. Nxg2 d5 12. cxd5 exd5 13. Rfd1 c6 14. Rac1 Re8
15. Qd3 Bg5 16. f4 Be7 17. e4 dxe4 18. Nxe4 a6 19. d5 cxd5 20. Qxd5 Qxd5 21.
Rxd5 Ra7 22. Kf1 Kf8 23. Kf2 Nd7 24. Kf3 Nf6 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "7"]
[White "Hartoch, Rob"]
[Black "Kieninger, Georg"]
[Result "1/2-1/2"]
[PlyCount "38"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nf3 Ne7 5. Bg5 Qd7 6. Be2 c5 7. c3 Ba6 8. Bxa6
Nxa6 9. Bxe7 Bxe7 10. O-O Nc7 11. Nbd2 f5 12. exf6 gxf6 13. c4 dxc4 14. Nxc4
O-O-O 15. dxc5 Bxc5 16. Qb3 Qd3 17. Qxd3 Rxd3 18. Rac1 Rhd8 19. a3 Kb7 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "7"]
[White "Kool, Gerard"]
[Black "Bertok, Mario"]
[Result "1-0"]
[PlyCount "75"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. Nge2 Nc6 8. d5
Ne7 9. Qd2 c5 10. g4 a6 11. Bh6 Qa5 12. Ng3 Re8 13. Bxg7 Kxg7 14. h4 Nd7 15. h5
Nf8 16. Nf5+ Bxf5 17. exf5 f6 18. hxg6 hxg6 19. Qh6+ Kf7 20. fxg6+ Nexg6 21.
Bd3 Nf4 22. O-O-O Ke7 23. Qg7+ Kd8 24. Rh8 Qc7 25. Qxf8 Rxf8 26. Rxf8+ Ke7 27.
Rxa8 Nxd3+ 28. Rxd3 f5 29. Rh8 Kf6 30. gxf5 Kg7 31. Rh4 Qf7 32. Ne4 Qxf5 33.
Kc2 b5 34. cxb5 c4 35. Rg4+ Kf8 36. Ra3 axb5 37. Ra8+ Kf7 38. Rag8 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "7"]
[White "Lehmann, Heinz"]
[Black "Zuidema, Coen"]
[Result "*"]
[PlyCount "0"]

 *

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "8"]
[White "Bertok, Mario"]
[Black "Lehmann, Heinz"]
[Result "1/2-1/2"]
[PlyCount "46"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 O-O 5. O-O d5 6. c4 dxc4 7. Na3 c5 8. dxc5
Nfd7 9. Nxc4 Nxc5 10. Be3 Nba6 11. Rc1 Ne6 12. Qb3 Qe8 13. Nfe5 Nec5 14. Qa3
Qb5 15. Nd3 Nxd3 16. exd3 Bf5 17. d4 Rad8 18. Rfd1 Be6 19. b3 Rfe8 20. d5 Bxd5
21. Bxd5 Rxd5 22. Rxd5 Qxd5 23. Bxa7 h5 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "8"]
[White "Dunkelblum, Arthur"]
[Black "Crabbendam, H."]
[Result "0-1"]
[PlyCount "98"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nbd7 7. Nc3 Nb6 8. Qd3
c6 9. b3 Bf5 10. e4 Nxe4 11. g4 Nxf2 12. Qe2 Nxg4 13. Bb2 e6 14. h3 Nf6 15.
Rad1 d5 16. Ne5 Nbd7 17. Kh2 Qc7 18. cxd5 exd5 19. Kh1 Ne4 20. Nxe4 Bxe4 21.
Bxe4 dxe4 22. Qxe4 f5 23. Qe2 Nf6 24. Qc4+ Nd5 25. Rc1 Qe7 26. Rce1 Qh4 27. Kh2
f4 28. Re2 Qg3+ 29. Kh1 Qxh3+ 30. Rh2 Qf5 31. Nf3 Rae8 32. Ne5 Qe4+ 33. Kg1
Bxe5 34. dxe5 Qxc4 35. bxc4 Ne3 36. Rc1 Ng4 37. Re2 f3 38. Re4 h5 39. e6 g5 40.
Rd1 Nf6 41. Re5 g4 42. e7 Rf7 43. Rg5+ Kh7 44. Rd6 Rfxe7 45. Bxf6 f2+ 46. Kxf2
Re2+ 47. Kf1 Re1+ 48. Kg2 R8e2+ 49. Kg3 Rg1+ 0-1

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "8"]
[White "Ree, Hans"]
[Black "Kool, Gerard"]
[Result "1-0"]
[PlyCount "77"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 d6 5. d4 Bg4 6. d5 a6 7. dxc6 axb5 8.
cxb7 Rb8 9. Qxb5+ Bd7 10. Qe2 Rxb7 11. c4 Be7 12. Nc3 Bg4 13. h3 Bh5 14. O-O
O-O 15. g4 Bg6 16. Rd1 Qa8 17. Nh4 Qa6 18. Nf5 Bd8 19. Be3 Nd7 20. b3 Re8 21.
Rac1 Nf8 22. c5 Qxe2 23. Nxe2 dxc5 24. Rxc5 f6 25. Nc3 Bf7 26. Rc6 Rb8 27. Nd5
Re6 28. Bc5 Ng6 29. Rxe6 Bxe6 30. Nb4 Bxf5 31. Nc6 Bxe4 32. Nxb8 Be7 33. Bxe7
Nxe7 34. Rd7 Nd5 35. Na6 c6 36. Nc5 Bf3 37. a4 h5 38. gxh5 f5 39. a5 1-0

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "8"]
[White "Rellstab, Ludwig"]
[Black "Kieninger, Georg"]
[Result "1/2-1/2"]
[PlyCount "44"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 Ne4 7. Bxe7 Qxe7 8. Qb3
Nxc3 9. Qxc3 c6 10. Nf3 O-O 11. Bd3 dxc4 12. Bxc4 b6 13. O-O Bb7 14. Be2 Nd7
15. Rfd1 Rfc8 16. Rac1 Kf8 17. Qe1 c5 18. dxc5 Rxc5 19. Qb4 Rxc1 20. Qxe7+ Kxe7
21. Rxc1 Rc8 22. Rxc8 Bxc8 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "8"]
[White "Zuidema, Coen"]
[Black "Hartoch, Rob"]
[Result "1/2-1/2"]
[PlyCount "96"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5
O-O 9. Nxe7+ Qxe7 10. c3 Be6 11. Bc2 d5 12. exd5 Bxd5 13. d4 exd4 14. Nxd4 Nxd4
15. Qxd4 Bc4 16. Rd1 Rad8 17. Qe3 Rxd1+ 18. Bxd1 Rd8 19. Bf3 Qd7 20. Qe1 Bd5
21. Bxd5 Nxd5 22. Bg5 f6 23. Be3 Nxe3 24. Qxe3 Qd1+ 25. Qe1 Qxe1+ 26. Rxe1 Rd2
27. Rb1 Kf7 28. g3 Ke6 29. Kg2 Kd5 30. Kf3 Kc4 31. Ke3 Rc2 32. h4 h5 33. f4 f5
34. Rd1 Rxb2 35. Rd7 c5 36. Rxg7 b4 37. cxb4 cxb4 38. Rc7+ Kd5 39. Rb7 Kc6 40.
Rf7 Rxa2 41. Rf6+ Kd7 42. Rxf5 b3 43. Kd3 a5 44. Rxh5 b2 45. Kc2 a4 46. Kb1 Ra3
47. g4 Rg3 48. Kxb2 Rxg4 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "9"]
[White "Crabbendam, H."]
[Black "Rellstab, Ludwig"]
[Result "1/2-1/2"]
[PlyCount "80"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. c3
d6 9. h3 Nb8 10. d4 Nbd7 11. a4 Bb7 12. axb5 axb5 13. Rxa8 Qxa8 14. Bc2 Nxe4
15. Qe2 Nef6 16. Nbd2 Bc6 17. Qf1 Re8 18. dxe5 dxe5 19. Nxe5 Nxe5 20. Rxe5 Bd6
21. Rxe8+ Qxe8 22. Nb3 Qe5 23. f4 Qe8 24. Bd3 Bd7 25. Nd4 c6 26. Nf5 Bf8 27.
Ng3 Nd5 28. Qf2 Qb8 29. Ne4 Be7 30. Be3 Nxe3 31. Qxe3 Qf8 32. Kh2 c5 33. Ng3 g6
34. f5 Bd6 35. Kh1 c4 36. Bc2 Qa8 37. f6 Bc6 38. Be4 Bxg3 39. Bxc6 Qxc6 40.
Qxg3 Qxf6 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "9"]
[White "Hartoch, Rob"]
[Black "Bertok, Mario"]
[Result "1/2-1/2"]
[PlyCount "112"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2
Nc6 9. Bc4 Bd7 10. O-O Ne5 11. Bb3 Rc8 12. Rad1 Nc4 13. Bxc4 Rxc4 14. Kh1 Qb8
15. b3 Rcc8 16. Bg5 Rfe8 17. Nde2 Be6 18. Nd5 Nxd5 19. exd5 Bd7 20. c3 Qc7 21.
Rc1 b5 22. Bh6 Bf6 23. Be3 Qb7 24. Ng3 Rc7 25. Rfd1 Bh8 26. Qe1 f5 27. Bd4 e5
28. dxe6 Rxe6 29. Qd2 Bxd4 30. Qxd4 Rc5 31. h3 Bc6 32. Kh2 Qe7 33. c4 b4 34. f4
h5 35. Rd2 h4 36. Nf1 d5 37. Kg1 Re4 38. Qf2 dxc4 39. bxc4 Rcxc4 40. Rxc4 Rxc4
41. Ne3 Rc5 42. Rd4 a5 43. Qd2 Rc3 44. Nd5 Bxd5 45. Rxd5 Qe3+ 46. Qxe3 Rxe3 47.
Rxa5 Re4 48. a3 bxa3 49. Rxa3 Rxf4 50. g3 hxg3 51. Kg2 Kg7 52. Kxg3 Re4 53. Rb3
Kh6 54. Ra3 Kg5 55. Rc3 Re3+ 56. Rxe3 f4+ 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "9"]
[White "Kieninger, Georg"]
[Black "Zuidema, Coen"]
[Result "1/2-1/2"]
[PlyCount "86"]

1. e4 e5 2. Bc4 Nc6 3. d3 Nf6 4. Nc3 Bc5 5. f4 d6 6. Nf3 Bg4 7. Na4 Bb6 8. Nxb6
axb6 9. O-O O-O 10. h3 Bxf3 11. Qxf3 Nd4 12. Qf2 b5 13. Bb3 Nxb3 14. cxb3 Nd7
15. f5 f6 16. Be3 c5 17. b4 Rf7 18. Qc2 Rc8 19. Rfc1 Rc6 20. Qb3 Qc7 21. bxc5
Nxc5 22. Qd5 b4 23. Rc4 Na6 24. Rac1 Nb8 25. Qb5 Rxc4 26. Rxc4 Nc6 27. Bb6 Qb8
28. a4 bxa3 29. bxa3 Rd7 30. a4 Qe8 31. a5 Nb8 32. Rc7 Kf8 33. Qd5 Na6 34. Rc4
g6 35. fxg6 hxg6 36. Rc1 Qf7 37. Qb5 d5 38. Qb2 dxe4 39. dxe4 Kg7 40. Qf2 Qe6
41. Kh2 Nb4 42. Qh4 Nc6 43. Be3 g5 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "9"]
[White "Kool, Gerard"]
[Black "Dunkelblum, Arthur"]
[Result "1/2-1/2"]
[PlyCount "50"]

1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. Nf3 Nc6 7. O-O e5 8. d3
Be7 9. b3 O-O 10. Bb2 f6 11. Rc1 Be6 12. Nd2 Qd7 13. Nc4 Rac8 14. Re1 b6 15.
Qc2 Nd5 16. Nxd5 Bxd5 17. Bxd5+ Qxd5 18. Ne3 Qe6 19. Qc4 Kf7 20. Nf5 Qxc4 21.
dxc4 Rfd8 22. Nxe7 Kxe7 23. Red1 Rxd1+ 24. Rxd1 Rd8 25. Rxd8 Kxd8 1/2-1/2

[Event "Amsterdam IBM II "]
[Site "Amsterdam IBM II "]
[Date "1963.??.??"]
[Round "9"]
[White "Lehmann, Heinz"]
[Black "Ree, Hans"]
[Result "1-0"]
[PlyCount "71"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. d4 cxd5 5. Nc3 g6 6. Bg5 dxc4 7. Bxc4 Bg7 8.
Nf3 O-O 9. O-O h6 10. Bf4 Nbd7 11. Re1 Nb6 12. Bb3 e6 13. Qd2 g5 14. Be5 Nfd5
15. Bc2 f6 16. Qd3 Rf7 17. Qh7+ Kf8 18. Bg6 Re7 19. Bg3 f5 20. Be5 Bxe5 21.
Qxh6+ Bg7 22. Qxg5 Bd7 23. h4 Bf6 24. Qh6+ Bg7 25. Qg5 Be8 26. h5 Bxg6 27. hxg6
Re8 28. Qg3 Qc7 29. Ne5 Nxc3 30. bxc3 Rac8 31. Rac1 Nc4 32. f4 Bxe5 33. fxe5
Qg7 34. Qg5 Qe7 35. Qh5 Kg7 36. Qh7+ 1-0

