[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Alon, Levi"]
[Black "Tiefenbacher, Richard"]
[Result "1/2-1/2"]
[ECO "B30"]
[EventDate "1978.09.10"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. b3 d6 4. Bb2 Nf6 5. d3 g6 6. g3 Bg7 7. Bg2 O-O 8. O-O
Rb8 9. Re1 Bg4 10. h3 Bxf3 11. Bxf3 Ne8 12. c3 b5 13. d4 cxd4 14. cxd4 Rc8
15. Na3 a6 16. Qd2 e6 17. Rac1 Qb6 18. Bg2 Nf6 19. d5 exd5 20. exd5 Nb8 21. Nc2
Ne4 22. Rxe4 Bxb2 23. Rd1 Nd7 24. Nd4 Bxd4 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Baretić, Dragoljub"]
[Black "Atanasov, Venko"]
[Result "1-0"]
[ECO "B33"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+
8. Nxc3 d5 9. exd5 exd5 10. Bd3 O-O 11. O-O d4 12. Ne2 Nd5 13. Be4 Nde7 14. b4
Qb6 15. Bb2 Rd8 16. Qd3 f5 17. Qb3+ Kh8 18. Bxc6 Nxc6 19. Rad1 Re8 20. Nxd4 Nxd4
21. Rxd4 Qg6 22. Qf3 Qf7 23. Rg4 Rg8 24. Rh4 Be6 25. Qh3 Qg6 26. Rh6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Boerefijn, Martinus"]
[Black "Vidinha, António"]
[Result "1-0"]
[ECO "B50"]
[EventDate "1978.09.10"]
[Opening "Sicilian defence: Kopec variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 d6 3. d3 Nc6 4. Nbd2 g6 5. g3 Bg7 6. Bg2 e5 7. O-O Nf6 8. Re1
O-O 9. Nf1 Bg4 10. h3 Bxf3 11. Bxf3 Nd4 12. Bg2 Re8 13. Ne3 Qc7 14. c3 Ne6
15. Bd2 Nf8 16. Rc1 b6 17. f4 exf4 18. gxf4 Rad8 19. Qf3 N8d7 20. Ng4 Nxg4
21. hxg4 f6 22. Kf2 Nf8 23. Rh1 Qf7 24. b3 Re7 25. Bf1 Bh8 26. d4 Ne6 27. Bc4
Kf8 28. f5 gxf5 29. gxf5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Burdio Gracía, Delfín"]
[Black "Hansen, Åge"]
[Result "1-0"]
[ECO "A48"]
[EventDate "1978.09.10"]
[Opening "King's Indian: East Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. Nf3 g6 3. c3 d5 4. Bg5 Bg7 5. Nbd2 O-O 6. e3 Nbd7 7. Be2 b6 8. O-O
Bb7 9. Bf4 Nh5 10. Ne5 Nxf4 11. exf4 Nxe5 12. fxe5 e6 13. f4 f5 14. Nf3 Rc8
15. Qa4 a5 16. Rac1 c6 17. Rfd1 b5 18. Qc2 Qe7 19. a3 a4 20. Bd3 Bh6 21. Qd2 Kh8
22. Kf2 Rg8 23. h4 Ba6 24. Rh1 Rc7 25. Rh3 Bc8 26. Rch1 Bd7 27. Qe3 Rcc8 28. Be2
Rcf8 29. Ng5 Bg7 30. h5 Rc8 31. hxg6 h6 32. Nf7+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Erős, Pál"]
[Black "Svensson, Roger"]
[Result "1-0"]
[ECO "A58"]
[EventDate "1978.09.10"]
[Opening "Benko gambit: fianchetto variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. Nf3 g6 8. g3
Bg7 9. Bg2 O-O 10. O-O Nbd7 11. Re1 Qc7 12. e4 Ng4 13. Bf1 Bxf1 14. Rxf1 Rfb8
15. Qe2 c4 16. Bg5 Nde5 17. Nd4 Nf6 18. Ndb5 Qd7 19. a4 Ne8 20. Kg2 Nc7 21. Nxc7
Qxc7 22. Nb5 Qd7 23. Rfc1 Rc8 24. Rc2 Nd3 25. Bc1 Ne5 26. Ra3 Rcb8 27. f4 Nd3
28. Rxc4 Nxc1 {Black lost on time.} 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Fesche, Svein Tore"]
[Black "Walisiak, Roman"]
[Result "1-0"]
[ECO "A22"]
[EventDate "1978.09.10"]
[Opening "English: Carls' Bremen system"]
[Source "365chess.com"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bb4 5. Nf3 d6 6. O-O O-O 7. d4 e4 8. Nd2
Bxc3 9. bxc3 Bf5 10. Re1 Qd7 11. Nf1 h6 12. Ne3 Bh3 13. Bh1 Rae8 14. Qc2 Nd8
15. Ba3 b6 16. c5 dxc5 17. dxc5 Qe7 18. c4 c6 19. Qa4 bxc5 20. Rab1 Ne6 21. Qxc6
Rc8 22. Qb7 Rc7 23. Qb2 Rd8 24. Qe5 Qd6 25. Qxd6 Rxd6 26. Rb8+ Kh7 27. Nd5 Nxd5
28. Bxe4+ f5 29. Bxd5 Nd4 30. Bb2 Re7 31. Bxd4 cxd4 32. Rb3 Ra6 33. a3 Kg6
34. f3 Re3 35. Rxe3 dxe3 36. Ra1 Kf6 37. f4 Ke7 38. Bg2 Bxg2 39. Kxg2 Kd6
40. Kf3 Kc5 41. Kxe3 Kxc4 42. g4 Re6+ 43. Kf2 fxg4 44. Rc1+ Kd4 45. Rc7 Ra6
46. Rxg7 Rxa3 47. Re7 Ra5 48. e3+ Kd3 49. Kg3 h5 50. e4 Kd4 51. f5 Ra3+ 52. Kf4
Rh3 53. Rd7+ Kc5 54. Rd2 Rf3+ 55. Ke5 h4 56. f6 g3 57. hxg3 hxg3 58. Rg2 a5
59. Ke6 Kd4 60. e5 Re3 61. Rd2+ Rd3 62. Ra2 Re3 63. Ra4+ Kd3 64. Rxa5 g2 65. Ra1
Kd4 66. Ra4+ Kd3 67. Rg4 Re4 68. Rxg2 Kd4 69. Rd2+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Free, Terry"]
[Black "Jennen, Herman"]
[Result "1/2-1/2"]
[ECO "B00"]
[EventDate "1978.09.10"]
[Opening "KP: Nimzovich defence"]
[Source "365chess.com"]

1. e4 Nc6 2. Nf3 g6 3. d4 Bg7 4. Nc3 d6 5. Be3 e5 6. d5 Nce7 7. Qd2 f5 8. exf5
Nxf5 9. Bg5 Bf6 10. Ne4 Bxg5 11. Nexg5 Qe7 12. Bb5+ Bd7 13. Bxd7+ Qxd7 14. Ne6
Ng7 15. Nfg5 Nf6 16. c4 Nxe6 17. Nxe6 Nh5 18. Qa5 b6 19. Qb5 Ke7 20. Qb3 Rag8
21. Qe3 c5 22. f4 Qa4 23. b3 Qb4+ 24. Kd1 e4 25. Qxe4 Qc3 26. Nxc5+ Kf7 27. Rc1
Qb2 28. Qe6+ Kg7 29. Qe7+ Kh6 30. Qg5+ Kg7 31. Ne6+ Kf7 32. f5 Nf6 33. Qd2 Qxd2+
34. Kxd2 gxf5 35. g3 Ne4+ 36. Ke3 Rg4 37. Rhf1 Kg6 38. Rf4 Rxf4 39. Kxf4 h5
40. Rc2 Nf6 41. Nd4 Re8 42. Re2 Rxe2 43. Nxe2 Ng8 44. Nd4 Ne7 45. Nc6 Nc8
46. Nd4 Ne7 47. Nb5 Nc8 48. a4 a5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Rudenskij, Nikolai"]
[Black "Krylov, Sergey"]
[Result "1/2-1/2"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Pelikan, Chelyabinsk variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 d6 7. Bf4 e5
8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Nxe7 Nxe7 12. Bxf6 gxf6 13. Qf3 f5 14. exf5
d5 15. O-O-O Bxf5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Surjanto, Edy"]
[Black "Carlin, Geoffrey"]
[Result "1/2-1/2"]
[ECO "C02"]
[EventDate "1978.09.10"]
[Opening "French: advance variation"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Ne7 5. dxc5 Nec6 6. Qe2 Bxc5 7. Be3 Nd7
8. Bxc5 Nxc5 9. f4 Qb6 10. Na3 a6 11. Rb1 Ne4 12. Nh3 Qa5 13. Qe3 b5 14. Nf2
Nxf2 15. Qxf2 b4 16. Qg3 bxa3 17. Qxg7 Rf8 18. b4 Qb6 19. b5 Qe3+ 20. Kd1 Rb8
21. Qg3 Qxg3 22. hxg3 axb5 23. Bxb5 Bd7 24. Rxh7 Ke7 25. Bd3 Rxb1+ 26. Bxb1 Rb8
27. Kc1 Rb2 28. g4 Rxg2 29. g5 Rg1+ 30. Kc2 Na5 31. g6 Rxg6 32. Kd2 Rg3 33. Ke2
Bb5+ 34. Kf2 Rxc3 35. Bg6 Be8 36. f5 exf5 37. Bxf5 Nc4 38. e6 Nd6 39. exf7 Bxf7
40. Bg6 Kf6 41. Bxf7 Nxf7 42. Rh4 Rc2+ 43. Ke3 Rxa2 44. Ra4 Ke5 45. Re4+ dxe4
1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Tonteri, Ari"]
[Black "Florián, Jaromír"]
[Result "0-1"]
[ECO "C62"]
[EventDate "1978.09.10"]
[Opening "Ruy Lopez: old Steinitz defence"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 f6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8. c4 a3
9. Nxa3 Ne7 10. Qa4 Be6 11. Nc2 g6 12. O-O Bg7 13. Ne3 O-O 14. Nd5 Bf7 15. Be3
Be8 16. Nxe7+ Qxe7 17. Rac1 Bf7 18. b4 f5 19. Qc2 f4 20. Bd2 g5 21. a4 g4
22. Ne1 Be6 23. b5 Qf7 24. a5 Rfb8 25. Qd3 h5 26. Bb4 Bf8 27. Rc3 Kg7 28. f3 Rd8
29. Qe2 Rab8 30. Nc2 Be7 31. Na3 Bf6 32. Rd1 Kh6 33. Rdc1 Rg8 34. Kh1 g3
35. R3c2 gxh2 36. Kxh2 Rg3 37. Be1 Rg7 38. Rb1 h4 39. Qf1 Rbg8 40. b6 Qh5 41. b7
h3 42. gxh3 Rb8 43. Rbb2 Bh4 44. Bxh4 Qxh4 45. Kh1 Rg3 46. Rh2 Qh5 47. Ra2 Rbg8
48. Ra1 Bxh3 49. Qe2 Rg2 50. Qe1 Rxh2+ 51. Kxh2 Bf1+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Vaccani, Mario"]
[Black "Slagle, James Robert"]
[Result "1-0"]
[ECO "C02"]
[EventDate "1978.09.10"]
[Opening "French: advance, Milner-Barry gambit"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 c4 7. Nbd2 Bd7 8. g3 Na5
9. b4 cxb3 10. Bb2 Bb5 11. Rc1 Rc8 12. Bxb5+ Qxb5 13. a4 Qd3 14. Ng1 Ne7 15. Ne2
Nc4 16. Nxc4 Qxd1+ 17. Rxd1 Rxc4 18. Ra1 Nc6 19. a5 Be7 20. Nc1 a6 21. Nxb3 Na7
22. Nd2 Rc6 23. Ra4 O-O 24. Ke2 Nb5 25. c4 dxc4 26. Rxc4 Rxc4 27. Nxc4 Rc8
28. Rc1 Rc6 29. Kd3 Kf8 30. f4 Ke8 31. g4 Bb4 32. h4 Ke7 33. f5 Rc8 34. Rf1 g6
35. f6+ Kd8 36. g5 Kc7 37. h5 Rg8 38. Rh1 Kd7 39. hxg6 hxg6 40. Ke4 Kc6 41. Rc1
b6 42. Nd6+ Kd7 43. Nxf7 Rf8 44. Nh6 bxa5 45. d5 Nc7 46. d6 Nd5 47. Ng4 Bd2
48. Rd1 Bxg5 49. Rxd5 exd5+ 50. Kxd5 Rb8 51. e6+ Ke8 52. f7+ Kf8 53. Ba3 a4
54. Ne5 Rb5+ 55. Ke4 Rxe5+ 56. Kxe5 Kg7 57. d7 Bf6+ 58. Kd5 Be7 59. Bxe7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Winkelmann, Max"]
[Black "Zeitler, Hans Jürgen"]
[Result "0-1"]
[ECO "E67"]
[EventDate "1978.09.10"]
[Opening "King's Indian: fianchetto (with...Nd7)"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. h3 e5 8. e4
exd4 9. Nxd4 Re8 10. O-O Nc5 11. Re1 a5 12. Nb3 Ne6 13. Be3 a4 14. Nd2 a3
15. Qc2 axb2 16. Rab1 Nd7 17. Rxb2 Nd4 18. Bxd4 Bxd4 19. Nb3 Bg7 20. Rbb1 c6
21. Ne2 Qe7 22. Rbd1 Nb6 23. Nbd4 Qc7 24. Qb3 Na4 25. Qc2 Nc5 26. Nb3 Ne6
27. Qd2 Ra4 28. Rc1 Nc5 29. Nxc5 dxc5 30. Red1 Be6 31. Qd3 Rxa2 32. Nf4 Bc8
33. Qb3 Qa5 34. Rb1 Bd4 35. Nd3 b5 36. Rdc1 Qd2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.10"]
[Round "1"]
[White "Wünsche, Klaus Peter"]
[Black "Schmeisser, André"]
[Result "1-0"]
[ECO "A96"]
[EventDate "1978.09.10"]
[Opening "Dutch: classical variation"]
[Source "365chess.com"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 d6 7. Nc3 a5 8. b3 Na6
9. e3 Qe8 10. Bb2 Qh5 11. Ne1 e5 12. dxe5 dxe5 13. Nd5 Qe8 14. Bxe5 Nxd5
15. Qxd5+ Kh8 16. Nf3 Nb4 17. Qd2 Bf6 18. Qc3 Nc6 19. Bxf6 Rxf6 20. Rad1 Be6
21. Nd4 Nd8 22. Nxe6 Rxe6 23. Rd5 Rf6 24. Rxa5 Rxa5 25. Qxa5 Qe7 26. Rd1 g6
27. Qa8 Rf8 28. Bxb7 Ne6 29. Qa5 Ng5 30. Qc3+ Rf6 31. Rd7 Qf8 32. Rxc7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Atanasov, Venko"]
[Black "Svensson, Roger"]
[Result "1-0"]
[ECO "B07"]
[EventDate "1978.09.10"]
[Opening "Pirc defence"]
[Source "365chess.com"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 Bg7 5. Be3 c6 6. Qd2 b5 7. Bd3 O-O 8. Nge2
Nbd7 9. O-O Nb6 10. b3 b4 11. Nd1 a5 12. a3 c5 13. c3 bxc3 14. Ndxc3 Ba6
15. Bxa6 Rxa6 16. dxc5 dxc5 17. Qxd8 Rxd8 18. Bxc5 e6 19. Rad1 Rxd1 20. Rxd1
Nbd7 21. Be7 Bf8 22. Bxf8 Kxf8 23. b4 axb4 24. axb4 Ke7 25. Kf2 Rd6 26. Ke3 Rxd1
27. Nxd1 Ne8 28. Kd4 Nc7 29. Ndc3 Kd6 30. b5 e5+ 31. Kc4 Nb6+ 32. Kb4 Ne6
33. Nd1 Nd8 34. Ne3 Nb7 35. Ng4 h5 36. Ne3 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Carlin, Geoffrey"]
[Black "Alon, Levi"]
[Result "0-1"]
[ECO "D86"]
[EventDate "1978.09.10"]
[Opening "Gruenfeld: exchange, classical variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5
8. Ne2 Nc6 9. Be3 cxd4 10. cxd4 Qa5+ 11. Bd2 Qa3 12. Rb1 O-O 13. O-O Qd6 14. Be3
Rd8 15. e5 Qc7 16. Qc1 Bf5 17. Rb2 Rac8 18. Bb3 Qb8 19. Qe1 Bd3 20. Rd2 Ba6
21. f4 Nb4 22. f5 Nd5 23. Qg3 Bc4 24. Bd1 Rc6 25. Bc2 Qc7 26. Be4 Ra6 27. h4 Qb6
28. h5 Nxe3 29. Qxe3 Bxe5 30. fxg6 fxg6 31. hxg6 hxg6 32. Bxg6 Bxd4 33. Nxd4
Qxg6 34. Qxe7 Rad6 35. Rf5 R8d7 36. Qh4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Erős, Pál"]
[Black "Baretić, Dragoljub"]
[Result "0-1"]
[ECO "E77"]
[EventDate "1978.09.10"]
[BlackElo "2305"]
[Opening "King's Indian: four pawns attack"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f4 d6 6. Nf3 c5 7. d5 e6 8. Be2 Re8
9. O-O exd5 10. e5 Ng4 11. exd6 Qxd6 12. cxd5 a6 13. a4 Nd7 14. a5 b5 15. axb6
Nxb6 16. Ra5 Nf6 17. Ne5 Bb7 18. Be3 Nfxd5 19. Bxc5 Qc7 20. Bd4 Rad8 21. Qb3
Nxc3 22. bxc3 Nc8 23. Rc5 Qe7 24. Bc4 Nd6 25. Ra1 Nxc4 26. Qxc4 Rc8 27. Rb1 Bxe5
28. fxe5 Qd7 29. Rb6 Rxc5 30. Qxc5 Be4 31. Rf6 Qg4 32. Rf2 Rb8 33. g3 Qd1+
34. Rf1 Qe2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Fesche, Svein Tore"]
[Black "Rudenskij, Nikolai"]
[Result "0-1"]
[ECO "A31"]
[EventDate "1978.09.10"]
[Opening "English: symmetrical variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. e4 Bg7 7. Be2 Nxe4
8. Nxc6 Bxc3+ 9. bxc3 dxc6 10. Qc2 Qa5 11. O-O Nc5 12. Bh6 Bf5 13. Qb2 O-O-O
14. Qb4 Qxb4 15. cxb4 Ne6 16. Be3 Nd4 17. Bxd4 Rxd4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Florián, Jaromír"]
[Black "Burdio Gracía, Delfín"]
[Result "1-0"]
[ECO "B21"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Grand Prix attack"]
[Source "365chess.com"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. Bb5 a6 5. Bxc6+ bxc6 6. O-O e6 7. d3 Be7 8. Nc3
d5 9. Qe1 d4 10. Na4 Nf6 11. Bd2 a5 12. Ne5 Bd7 13. Nc4 O-O 14. Nab6 Ra7
15. Bxa5 Qb8 16. a4 Bd8 17. Nxd7 Nxd7 18. Bxd8 Rxd8 19. a5 e5 20. f5 f6 21. g4
Nf8 22. h4 Qc7 23. Qg3 Qe7 24. g5 Nd7 25. Kf2 Kh8 26. Rg1 Re8 27. Ke2 Nb8
28. Qg4 Na6 29. Qh5 Rf8 30. Kd2 Nc7 31. Rg2 Ne8 32. Rag1 Nd6 33. gxf6 Nxc4+
34. dxc4 Qxf6 35. Kd3 Kg8 36. Qg5 Qxg5 37. Rxg5 Rff7 38. h5 Rxa5 39. f6 Rxf6
40. Rxg7+ Kf8 41. Rg8+ Ke7 42. R1g7+ Ke6 43. Rxh7 Ra1 44. Rgg7 Rf8 45. Rh6+ Rf6
46. Rxf6+ Kxf6 47. Rg6+ Ke7 48. Rxc6 Rh1 49. Rxc5 Rxh5 50. b4 Kd6 51. Rd5+ Kc6
52. Kd2 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Hansen, Åge"]
[Black "Tonteri, Ari"]
[Result "0-1"]
[ECO "C37"]
[EventDate "1978.09.10"]
[Opening "KGA: Salvio gambit, Anderssen counter-attack"]
[Source "365chess.com"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. Ne5 Qh4+ 6. Kf1 Nh6 7. d4 d6 8. Nd3
f3 9. Nf4 fxg2+ 10. Kxg2 Rg8 11. Rf1 g3 12. h3 Nc6 13. Qh5 Bxh3+ 14. Kg1 Qxh5
15. Nxh5 O-O-O 16. Rf6 Rg6 17. Rxg6 fxg6 18. Nf4 Bd7 19. c3 Bg7 20. Na3 Re8
21. Bd3 Ng4 22. Kg2 Nf2 23. Kxg3 Nxd3 24. Nxd3 Rxe4 25. Bd2 Bf5 26. Re1 Rxe1
27. Nxe1 Ne7 28. Nac2 Nd5 29. Ne3 Nxe3 30. Bxe3 Kd7 31. Nf3 Ke6 32. Ng5+ Kd5
33. Nxh7 Ke4 34. Bg5 Kd3 35. Bd8 c6 36. Be7 d5 37. Kf4 Kc2 38. Bf6 Bxf6 39. Nxf6
Kxb2 40. Ne8 Kxa2 41. Nd6 a5 42. Nxb7 a4 43. Na5 a3 44. Nxc6 Kb2 45. Nb4 Kxc3
46. Nxd5+ Kxd4 47. Nb4 Kc3 48. Nd5+ Kb2 49. Nb6 a2 50. Nc4+ Kc3 51. Na3 a1=Q
52. Nb5+ Kb4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Krylov, Sergey"]
[Black "Free, Terry"]
[Result "1-0"]
[ECO "C85"]
[EventDate "1978.09.10"]
[Opening "Ruy Lopez: exchange variation doubly deferred"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. d3 Bg4
8. h3 Bxf3 9. Qxf3 g6 10. Nd2 Qd6 11. Nc4 Qe6 12. Bh6 Rg8 13. Bd2 Nd7 14. a4
O-O-O 15. b4 f5 16. Rfb1 f4 17. b5 g5 18. bxa6 bxa6 19. Qg4 Qxg4 20. hxg4 Bf6
21. Na5 Nb8 22. Rxb8+ Kxb8 23. Nxc6+ Kb7 24. Nxd8+ Rxd8 25. Rb1+ Kc6 26. Kf1 Rd4
27. Rb4 Kc5 28. Rxd4 exd4 29. Ke2 Kd6 30. Bb4+ c5 31. Ba5 Kc6 32. Kd2 Kb7 33. c3
Kc6 34. Kc2 Kd6 35. Kb3 Kc6 36. Kc4 Be5 37. f3 Bf6 38. cxd4 Bxd4 39. Bc3 Be3
40. Bf6 Kd6 41. Bxg5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Slagle, James Robert"]
[Black "Surjanto, Edy"]
[Result "1/2-1/2"]
[ECO "A16"]
[EventDate "1978.09.10"]
[Opening "English: Anglo-Gruenfeld defence"]
[Source "365chess.com"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 c6 5. Bg2 g6 6. Qb3 e6 7. e3 Nb4 8. d4
Qb6 9. Nge2 Nd3+ 10. Kf1 Qxb3 11. axb3 Nxc1 12. Nxc1 Nd7 13. Nd3 Bg7 14. Ra5 Ke7
15. Ke2 a6 16. b4 Rb8 17. Bh3 Nb6 18. Rc1 Rd8 19. Ne4 Nd5 20. Ng5 f6 21. Nf3 h5
22. Bg2 g5 23. h4 g4 24. Nd2 Bf8 25. Bxd5 exd5 26. Nf4 Kf7 27. Ra4 Bd6 28. Nxh5
Kg6 29. Nf4+ Bxf4 30. gxf4 Rh8 31. Rh1 Bf5 32. Raa1 Rh5 33. Rh2 Rbh8 34. Rah1
Be4 35. f3 gxf3+ 36. Nxf3 Kf5 37. Kf2 Ke6 38. Rh3 Kd6 39. Rg1 Bxf3 40. Kxf3 Rxh4
41. Rxh4 Rxh4 42. Rg7 Rh3+ 43. Ke2 Rh2+ 44. Kd3 Rxb2 45. Rxb7 Rb3+ 46. Kd2 a5
47. Rf7 Ke6 48. Rc7 axb4 49. Rxc6+ Kf5 50. Rd6 Ke4 51. Re6+ Kf5 52. Rd6 Ke4
1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Tiefenbacher, Richard"]
[Black "Jennen, Herman"]
[Result "1/2-1/2"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. Ne5 Nbd7 7. Nc4 Qc7
8. g3 e6 9. Bf4 Qd8 10. Bg2 Nb6 11. Ne3 Be7 12. O-O O-O 13. Ne2 Nbd5 14. Nxd5
exd5 15. Bg5 Bg4 16. f3 Bf5 17. c3 Qc7 18. Qd2 Rae8 19. Rae1 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Vaccani, Mario"]
[Black "Wünsche, Klaus Peter"]
[Result "0-1"]
[ECO "B30"]
[EventDate "1978.09.10"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d3 d6 4. g3 g6 5. c3 Bg7 6. Nbd2 e5 7. Bg2 Nge7 8. O-O
Rb8 9. Re1 O-O 10. Nf1 h6 11. h4 Be6 12. N3h2 f5 13. Qe2 Qd7 14. Ne3 Rf7 15. Nd5
Rbf8 16. Be3 Kh7 17. Rad1 f4 18. gxf4 exf4 19. Bc1 Ng8 20. Nf3 Bg4 21. Kh2 Nf6
22. Nxf4 Nh5 23. Nxg6 Kxg6 24. e5 Bxf3 25. Bxf3 Rxf3 26. Qe4+ Qf5 27. Rg1+ Kh7
0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Vidinha, António"]
[Black "Winkelmann, Max"]
[Result "0-1"]
[ECO "E40"]
[EventDate "1978.09.10"]
[Opening "Nimzo-Indian: 4.e3"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Bxc3+ 5. bxc3 b6 6. Nf3 Bb7 7. Be2 O-O
8. O-O d5 9. Re1 Nbd7 10. Rb1 c5 11. cxd5 Nxd5 12. Qd3 N5f6 13. Ba3 Be4 14. Qd2
Bxb1 15. Rxb1 Rc8 16. Bd3 Re8 17. Qc2 h6 18. e4 cxd4 19. Nxd4 Nc5 20. Bb5 Nfd7
21. Rd1 Qc7 22. Bxc5 Nxc5 23. Bxe8 Rxe8 24. Nb5 Qe7 25. f3 a6 26. Nd4 Qc7
27. Ne2 b5 28. Ng3 Rd8 29. Ne2 Na4 30. Rd3 Rd6 31. a3 Qc5+ 32. Kh1 Qxa3 33. c4
Qc5 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Walisiak, Roman"]
[Black "Schmeisser, André"]
[Result "1-0"]
[ECO "C05"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, closed variation"]
[Source "365chess.com"]

1. d4 e6 2. e4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ngf3 Qb6 8. Nb3
cxd4 9. Nbxd4 Bc5 10. b4 Bxd4 11. Nxd4 Nxd4 12. Qxd4 Qxd4 13. cxd4 O-O 14. a4 f6
15. exf6 Nxf6 16. Bd3 Bd7 17. O-O Rac8 18. Bd2 Rc7 19. b5 Rfc8 20. Rfc1 Be8
21. Rxc7 Rxc7 22. Rc1 Rxc1+ 23. Bxc1 Bg6 24. Bxg6 hxg6 25. Bd2 a6 26. bxa6 bxa6
27. Kf1 Ne4 28. Bb4 g5 29. fxg5 Nxg5 30. Ke2 Ne4 31. Kf3 Kf7 32. Kf4 Nf2 33. Ba3
Kf6 34. h4 Ne4 35. g4 Nc3 36. g5+ Kf7 37. a5 Nb5 38. Bc5 Nc7 39. h5 Kg8 40. Ke5
Kf7 41. Kd6 Nb5+ 42. Kd7 Nc3 43. Bd6 Ne4 44. Bf4 Nf2 45. Be5 Ng4 46. g6+ Kg8
47. Kxe6 Ne3 48. Bc7 Kf8 49. Bd6+ Kg8 50. Bf4 Nc4 51. Kxd5 Nxa5 52. Ke6 Nb3
53. d5 a5 54. d6 Kf8 55. d7 Nc5+ 56. Kd6 Nb7+ 57. Kc7 a4 58. Bd6+ Kg8 59. Kxb7
1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.11"]
[Round "2"]
[White "Zeitler, Hans Jürgen"]
[Black "Boerefijn, Martinus"]
[Result "1-0"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bd7 7. O-O e6
8. d5 exd5 9. Re1+ Ne7 10. Bxd7+ Nxd7 11. Nxd5 c6 12. Nxe7 Bxe7 13. Bf4 Nf6
14. Rxe7+ Kxe7 15. Qd6+ Ke8 16. Re1+ Qxe1+ 17. Nxe1 Rd8 18. Qc5 h6 19. Nd3 Nd5
20. Bd6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Alon, Levi"]
[Black "Rudenskij, Nikolai"]
[Result "0-1"]
[ECO "A07"]
[EventDate "1978.09.10"]
[Opening "Reti: King's Indian attack, Pachman system"]
[Source "365chess.com"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. d3 d5 5. O-O Ne7 6. Nbd2 O-O 7. e4 c6 8. Re1
Qc7 9. c3 h6 10. Qe2 Nd7 11. d4 exd4 12. Nxd4 Nc5 13. exd5 Nxd5 14. N2b3 Nxb3
15. Nxb3 Be6 16. c4 Nb6 17. Bf4 Qd8 18. Rad1 Qf6 19. Rd4 Rfe8 20. Re4 Qxb2
21. Qxb2 Bxb2 22. Nc5 g5 23. Bc7 Nxc4 24. Nxb7 Rec8 25. Nd6 Rxc7 26. Nxc4 Bf6
27. Rxe6 fxe6 28. Rxe6 Kf7 29. Rxc6 Rxc6 30. Bxc6 Rd8 31. Kf1 Ke6 32. Ke2 Rd4
33. Ne3 Be7 34. Bb5 Bc5 35. f3 Rb4 36. Bc4+ Kd6 37. Bb3 Bxe3 38. Kxe3 a5 39. h3
a4 40. Bf7 Rb7 41. Bg8 Rg7 42. Bc4 Kc5 43. Bd3 Rb7 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Boerefijn, Martinus"]
[Black "Fesche, Svein Tore"]
[Result "1-0"]
[ECO "B28"]
[EventDate "1978.09.10"]
[Opening "Sicilian: O'Kelly variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 a6 3. g3 e6 4. Bg2 d5 5. exd5 exd5 6. O-O Nf6 7. d3 Be7 8. Nc3
Nc6 9. h3 O-O 10. Nh2 d4 11. Ne2 Nd5 12. Re1 Re8 13. Nf4 Nxf4 14. Bxf4 Be6
15. Nf3 Qd7 16. Kh2 Bf6 17. a3 Bd5 18. Qd2 h6 19. g4 g5 20. Bg3 Bg7 21. Rxe8+
Rxe8 22. Ne1 f5 23. f4 Bxg2 24. Nxg2 fxg4 25. hxg4 Qxg4 26. Re1 Rf8 27. Re4 Qh5+
28. Kg1 Qf3 29. Qe1 a5 30. fxg5 hxg5 31. Bd6 Rf5 32. Re8+ Kh7 33. Qe6 Qf1+
34. Kh2 Rf7 35. Qh3+ Kg6 36. Re6+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Burdio Gracía, Delfín"]
[Black "Krylov, Sergey"]
[Result "0-1"]
[ECO "A48"]
[EventDate "1978.09.10"]
[Opening "King's Indian: East Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. Nf3 g6 3. c3 b6 4. Bg5 Ne4 5. Bh4 Bb7 6. e3 Bg7 7. Bd3 Nd6 8. Nbd2
c5 9. O-O O-O 10. Ne5 Nc6 11. f4 Qe8 12. Qg4 f5 13. Qh3 Rc8 14. Rae1 Nd8
15. Ndf3 Ne6 16. Ng5 Nxg5 17. Bxg5 Be4 18. Rd1 Bxd3 19. Nxd3 Rc7 20. Bh6 Qf7
21. Bxg7 Kxg7 22. Ne5 Qxa2 23. dxc5 bxc5 24. g4 Qe6 25. g5 Rb8 26. Qg2 Ne4
27. Rfe1 Rcb7 28. Re2 d6 29. Nd3 Qb3 30. Rde1 Qc4 31. Nc1 a5 32. h4 a4 33. h5
gxh5 34. Qh3 Rxb2 35. Qxh5 Qe6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Florián, Jaromír"]
[Black "Zeitler, Hans Jürgen"]
[Result "1/2-1/2"]
[ECO "B40/03"]
[EventDate "1978.09.10"]
[Opening "Sicilian (Nimzovich-Rossolimo & Kan)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d3 Nc6 5. g3 Nf6 6. Bg2 d5 7. Nd2 Be7 8. O-O d4
9. Ne2 e5 10. Nf3 Nd7 11. Bd2 b5 12. Ne1 c4 13. c3 Nc5 14. cxd4 cxd3 15. dxc5
dxe2 16. Qxe2 Be6 17. b3 Bxc5 18. Nc2 Nd4 19. Nxd4 Bxd4 20. Rad1 Qb6 21. Kh1 O-O
22. f4 f6 23. f5 Bd7 24. Be3 b4 25. Bxd4 exd4 26. Qd2 Bb5 27. Rfe1 Rad8 28. Qxb4
a5 29. Qd2 Rfe8 30. h4 Re5 31. Qf2 Qd6 32. Rd2 d3 33. Kh2 Rc5 34. Red1 Rdc8
35. Kh3 Qe5 36. Rxd3 Bxd3 37. Rxd3 Rc2 38. Qb6 h5 39. Rd8+ Rxd8 40. Qxd8+ Kh7
41. Qd1 Rxa2 42. Qxh5+ Kg8 43. Bf1 Rc2 44. Qg4 Qa1 45. Qf3 Rc3 46. Bc4+ Kf8
47. Qf4 Qh1+ 48. Kg4 Qd1+ 49. Kh3 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Jennen, Herman"]
[Black "Vaccani, Mario"]
[Result "1-0"]
[ECO "D26"]
[EventDate "1978.09.10"]
[Opening "QGA: classical variation (6.O-O)"]
[Source "365chess.com"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. Nc3 a6 8. dxc5
Qa5 9. Qe2 Bxc5 10. Bd2 Qc7 11. Rac1 O-O 12. e4 b5 13. Bd3 Bb7 14. e5 Ng4
15. Bxh7+ Kh8 16. Be4 f5 17. exf6 Rxf6 18. g3 Raf8 19. Nd1 Nce5 20. Nxe5 Qxe5
21. Qxg4 Bxe4 22. Rxc5 Qxc5 23. Qxe4 Rd8 24. Bc3 Rxd1 25. Rxd1 Qxf2+ 26. Kh1 Rf8
27. Bd4 Qf7 28. Be5 Qh5 29. Qh4 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Schmeisser, André"]
[Black "Vidinha, António"]
[Result "1-0"]
[ECO "B22"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Alapin's variation (2.c3)"]
[Source "365chess.com"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d6 5. Nf3 Bg4 6. d5 Ne5 7. Nxe5 Bxd1
8. Bb5+ Qd7 9. Bxd7+ Kd8 10. Nxf7+ Kxd7 11. Kxd1 Nf6 12. Nxh8 Nxe4 13. Ke2 Ke8
14. f3 Nf6 15. Nc3 g6 16. Bg5 Bg7 17. Bxf6 Bxf6 18. Nxg6 hxg6 19. Nb5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Slagle, James Robert"]
[Black "Carlin, Geoffrey"]
[Result "0-1"]
[ECO "A21"]
[EventDate "1978.09.10"]
[Opening "English closed (with ...f5)"]
[Source "365chess.com"]

1. c4 e5 2. Nc3 d6 3. g3 f5 4. Bg2 Nf6 5. e3 Be7 6. Nge2 c6 7. d4 e4 8. d5 Na6
9. O-O O-O 10. Rb1 c5 11. a3 b6 12. f4 exf3 13. Bxf3 g5 14. Bd2 Nd7 15. b3 Ne5
16. Bg2 Nc7 17. Qc2 Ne8 18. e4 Ng7 19. exf5 Bxf5 20. Ne4 Qd7 21. Bc3 Bf6 22. Qb2
Rae8 23. Rbd1 Bd8 24. Nc1 h6 25. Rfe1 Nh5 26. Nf2 Bf6 27. Ne4 Bg7 28. Kh1 Bg4
29. Rd2 Nf3 30. Bxf3 Bxf3+ 31. Kg1 Rxe4 32. Rxe4 Bxe4 33. Bxg7 Nxg7 34. Ne2 Qh3
35. Nf4 gxf4 36. g4 Qxg4+ 37. Kf1 Nf5 38. Rf2 Qd1# 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Surjanto, Edy"]
[Black "Free, Terry"]
[Result "0-1"]
[ECO "B42"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Kan (5.Bd3)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Ne2 d6 7. O-O Be7 8. c3
Qc7 9. Nd2 Nf6 10. Nf3 e5 11. Bg5 h6 12. Bxf6 Bxf6 13. Ng3 g6 14. Ne1 Be6
15. Nc2 h5 16. Ne3 Ne7 17. Qc2 O-O-O 18. a4 h4 19. Ne2 g5 20. b4 Ng6 21. Nd5
Bxd5 22. exd5 Nf4 23. Nxf4 gxf4 24. Be2 Rdg8 25. Qf5+ Qd7 26. Qe4 Rg5 27. c4
Rhg8 28. Bf3 Bh8 29. c5 f5 30. c6 bxc6 31. dxc6 Qc7 32. Qc4 e4 33. Qxa6+ Kd8
34. Rae1 Be5 35. a5 Ke7 36. Qb7 Qxb7 37. cxb7 d5 38. a6 Bb8 39. Rc1 Kd7 40. Rfd1
Kd6 41. Rc8 exf3 42. Rxb8 Rxg2+ 43. Kh1 Rxb8 44. a7 Rgg8 45. axb8=Q+ Rxb8
46. Rd3 Rxb7 47. Rxf3 Ke5 48. Kg2 Ke4 49. Rb3 d4 50. b5 f3+ 51. Kh3 Rb6 52. Kxh4
Rh6+ 53. Kg5 Rxh2 54. b6 Rh8 55. Kf6 d3 {White lost on time.} 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Svensson, Roger"]
[Black "Hansen, Åge"]
[Result "0-1"]
[ECO "E20"]
[EventDate "1978.09.10"]
[Opening "Nimzo (plus QGD, Benoni)"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Be7 4. Bg5 d6 5. Nf3 O-O 6. e3 b6 7. Bd3 Bb7 8. O-O
Nbd7 9. Re1 Re8 10. e4 Nf8 11. a3 c5 12. d5 e5 13. Bc1 h6 14. Nd2 Ng6 15. Ne2
Bc8 16. f3 Qd7 17. Nb1 Nh4 18. Ng3 Ng6 19. Nc3 Nh7 20. Be3 Bg5 21. Bxg5 hxg5
22. Bf1 Nf4 23. Re3 g6 24. Nge2 Kg7 25. g4 Rh8 26. Ng3 Nf6 27. b3 Rh4 28. Ra2
Ba6 29. a4 Rah8 30. Rd2 Bc8 31. Qc2 Qe8 32. Bd3 R8h6 33. Nf1 Qh8 34. Nb5 Rh3
35. Nxd6 Bd7 36. Nb5 a6 37. Nc3 R6h4 38. Rf2 Rh7 39. Rd2 R3h4 40. d6 Ne6 41. Nd5
Nd4 42. Qb2 Rh3 43. Nxf6 Kxf6 44. Rf2 a5 45. Qa2 Ke6 46. Bb1 Qf6 47. Ng3 Qf4
48. Nf1 Nxf3+ 49. Rexf3 Rxf3 50. Rxf3 Qxf3 51. Qc2 Qxg4+ 52. Qg2 Qxg2+ 53. Kxg2
Kxd6 54. Ne3 Be6 55. Bd3 Rh3 56. Kf2 Rxh2+ 57. Kf3 Rb2 58. Bc2 f5 59. exf5 gxf5
0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Tonteri, Ari"]
[Black "Erős, Pál"]
[Result "1-0"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sveshnikov variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6
8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. exf5 Bxf5 12. Bd3 e4 13. Be2 Bg7 14. c3
O-O 15. Nc2 Ne5 16. Nce3 Be6 17. O-O Rc8 18. a4 f5 19. Nf4 Bd7 20. Qxd6 Rc6
21. Qd5+ Kh8 22. axb5 Rh6 23. Rxa6 Qe7 24. Rd1 Rxa6 25. bxa6 Bh6 26. g3 Rg8
27. Nc4 Bxf4 28. Nxe5 Be6 29. Qd4 Qg7 30. Ng6+ hxg6 31. gxf4 Kh7 32. Qxg7+ Kxg7
33. Rd6 Kf7 34. Rxe6 g5 35. Bc4 gxf4+ 36. Rg6+ Kxg6 37. Bxg8 e3 38. Kf1 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Walisiak, Roman"]
[Black "Atanasov, Venko"]
[Result "0-1"]
[ECO "B35"]
[EventDate "1978.09.10"]
[Opening "Sicilian: accelerated fianchetto, Uogele variation (Bc4)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 Qa5
8. O-O O-O 9. Bb3 d6 10. f3 Bd7 11. Qd2 Rac8 12. Nxc6 bxc6 13. Nd5 Qd8 14. Nxf6+
Bxf6 15. c3 c5 16. Bc4 Rb8 17. Rab1 a5 18. b4 Qc7 19. Rfc1 Rfd8 20. Qc2 Kg7
21. b5 e6 22. a4 Be8 23. Qd2 Qe7 24. Re1 Qb7 25. Rbd1 Rd7 26. Bg5 Bxg5 27. Qxg5
f6 28. Qg3 e5 29. Bd5 Qc7 30. c4 Bf7 31. h4 Rf8 32. h5 g5 33. Qg4 Re7 34. Kf2
Be8 35. Rh1 Bd7 36. h6+ Kh8 37. Qg3 Be6 38. Ke3 Qd8 39. Bxe6 Rxe6 40. Rd5 f5
41. exf5 Rxf5 42. Rhd1 Rf4 43. Qh3 g4 44. Qh5 Qf6 45. Rxd6 Rxf3+ 46. Ke4 Rf4+
47. Ke3 Rd4 48. Rxe6 Qf4+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Winkelmann, Max"]
[Black "Tiefenbacher, Richard"]
[Result "1/2-1/2"]
[ECO "E00"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn game"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. g3 Ne4 4. Bg2 Bb4+ 5. Nd2 f5 6. a3 Bxd2+ 7. Bxd2 O-O
8. Nf3 b6 9. O-O Bb7 10. Rc1 Nc6 11. e3 Ne7 12. Bb4 a5 13. Bxe7 Qxe7 14. Nd2
Nxd2 15. Qxd2 Bxg2 16. Kxg2 d6 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.12"]
[Round "3"]
[White "Wünsche, Klaus Peter"]
[Black "Baretić, Dragoljub"]
[Result "0-1"]
[ECO "E97"]
[EventDate "1978.09.10"]
[BlackElo "2305"]
[Opening "King's Indian: orthodox, Aronin-Taimanov variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5
Ne7 9. Nd2 c5 10. Rb1 b6 11. b4 cxb4 12. Rxb4 Nd7 13. Rb1 f5 14. Nb3 fxe4
15. Nxe4 Nf6 16. Ng5 Bf5 17. Ne6 Bxe6 18. dxe6 Qc7 19. Bb2 Rae8 20. Bf3 e4
21. Be2 Nc6 22. Nd4 Nxd4 23. Bxd4 Rxe6 24. Rb5 Kh8 25. a4 Ne8 26. Be3 Qc6 27. a5
bxa5 28. Rxa5 a6 29. Qa4 Qxa4 30. Rxa4 Nc7 31. Bb6 Re7 32. Bxc7 Rxc7 33. Rxa6
Be5 34. g3 Rb7 35. Ra2 Bd4 36. Kg2 Rbf7 37. f3 e3 38. Bd3 Rb7 39. Rb1 Rxb1
40. Bxb1 Rb8 41. Be4 Rb4 42. Bd5 Kg7 43. f4 Kf6 44. Kf3 Ke7 45. Ke4 Bc5 46. Bg8
h6 47. Bd5 Rb1 48. Rg2 Rf1 49. Kd3 Kf6 50. Ke4 g5 51. fxg5+ hxg5 52. Bc6 Rd1
53. Kf3 Ke5 54. h4 gxh4 55. gxh4 Rf1+ 56. Kg3 Kd4 57. h5 Kxc4 58. h6 Bd4 59. h7
Rf8 60. Bb7 Kd3 61. Ba6+ Ke4 62. Bb7+ d5 63. Bc6 Rh8 64. Ba4 Kd3 65. Rh2 Rc8
66. Bd7 Rf8 67. Ra2 Ke4 68. Kg2 Rf7 69. Bg4 Rxh7 70. Bf3+ Ke5 71. Ra5 Kf4
72. Be2 Rg7+ 73. Kf1 Ke4 74. Ra4 Rf7+ 75. Ke1 Rb7 76. Bd1 Rb2 77. Ra3 Be5
78. Be2 Rb1+ 79. Bd1 d4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Alon, Levi"]
[Black "Burdio Gracía, Delfín"]
[Result "0-1"]
[ECO "A39"]
[EventDate "1978.09.10"]
[Opening "Reti/English: symmetrical, main line knight exchange"]
[Source "365chess.com"]

1. Nf3 g6 2. d4 Bg7 3. g3 Nf6 4. c4 O-O 5. Bg2 c5 6. Nc3 cxd4 7. Nxd4 Nc6
8. O-O Qb6 9. Be3 Qd8 10. h3 Nxd4 11. Qxd4 d6 12. Qd2 a6 13. Nd5 Nxd5 14. cxd5
b5 15. a4 bxa4 16. Rxa4 Bd7 17. Rh4 f5 18. Bh6 Bxh6 19. Qxh6 Rf7 20. e4 Qb6
21. e5 dxe5 22. d6 e4 23. dxe7 Rxe7 24. Re1 Qxb2 25. Rexe4 fxe4 26. Bxe4 Rf7
27. Bd5 Qxf2+ 28. Kh1 Qe1+ 29. Kh2 Qe2+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Atanasov, Venko"]
[Black "Boerefijn, Martinus"]
[Result "1/2-1/2"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bd7 7. d5 Nb4
8. Bxd7+ Nxd7 9. Nd4 Nxd5 10. Nb3 Nxc3 11. Qxd7+ Kxd7 12. Nxa5 b6 13. Nc4 Ne4
14. Bf4 Nd6 15. O-O-O f6 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Baretić, Dragoljub"]
[Black "Krylov, Sergey"]
[Result "1/2-1/2"]
[ECO "B33"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3 d5 7. Bg2 dxe4
8. Nxc6 Qxd1+ 9. Kxd1 bxc6 10. Nxe4 Nxe4 11. Bxe4 Bd7 12. Ke2 f5 13. Bg2 e5
14. b3 O-O-O 15. Bb2 Re8 16. Rhd1 Bc5 17. Kf1 Re7 18. Rd2 Rhe8 19. Rad1 Rf7
20. Re2 e4 21. Bd4 Bxd4 22. Rxd4 Kc7 23. Re3 Bc8 24. f3 Ref8 25. fxe4 fxe4+
26. Ke1 Rf2 27. Rd2 Rxd2 28. Kxd2 Bg4 29. Rxe4 Rf2+ 30. Ke3 Rxg2 31. Rxg4 Rxh2
32. Rxg7+ Kb6 33. Kd3 h5 34. Kc3 h4 35. gxh4 Rxh4 36. b4 Rh3+ 37. Kb2 a6 38. c3
Rh5 39. Kb3 a5 40. bxa5+ Rxa5 41. a4 Rf5 42. Rg6 Re5 43. Rg8 Rf5 44. Rb8+ Kc7
45. Rb4 Rg5 46. Ka3 Rh5 47. Rb1 Rg5 48. Kb4 Kb6 49. Kc4+ Kc7 50. Ra1 Kb6 51. a5+
Rxa5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Fesche, Svein Tore"]
[Black "Slagle, James Robert"]
[Result "1-0"]
[ECO "E70"]
[EventDate "1978.09.10"]
[Opening "King's Indian: Kramer system"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nge2 O-O 6. Ng3 c5 7. d5 a6 8. Be2
Bd7 9. h4 b5 10. cxb5 axb5 11. Bxb5 Bxb5 12. Nxb5 Qa5+ 13. Nc3 Nbd7 14. O-O Rfb8
15. Qe2 Ne8 16. Nd1 Rb7 17. f4 Rab8 18. h5 Nc7 19. hxg6 hxg6 20. Bd2 Qa7 21. Bc3
Nb5 22. Bxg7 Kxg7 23. e5 Nd4 24. Qg4 c4 25. Rf2 Rxb2 26. Nxb2 Rxb2 27. Rxb2 Nc2+
28. Kh2 Nxa1 29. Nf5+ Kf8 30. Qh4 Kg8 31. Nxe7+ Kg7 32. Qg5 c3 33. Nf5+ Kg8
34. Rb1 Qxa2 35. Qd8+ Nf8 36. Qxf8+ Kxf8 37. Rb8# 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Free, Terry"]
[Black "Winkelmann, Max"]
[Result "1/2-1/2"]
[ECO "C02"]
[EventDate "1978.09.10"]
[Opening "French: advance, Wade variation"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Bd3 Bb5 7. O-O Bxd3 8. Qxd3
Nc6 9. dxc5 Bxc5 10. b4 Be7 11. Be3 Qc7 12. Nbd2 a6 13. Rfe1 Bd8 14. Bc5 Nge7
15. c4 O-O 16. cxd5 exd5 17. Ng5 g6 18. Qh3 h5 19. Ndf3 Qc8 20. Rad1 Qxh3
21. Nxh3 Re8 22. Nf4 Bc7 23. Nxd5 Nxd5 24. Rxd5 Rad8 25. Rxd8 Rxd8 26. Kf1 Rd5
27. e6 fxe6 28. Rxe6 Kf7 29. Re1 b6 30. Be3 Nxb4 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Hansen, Åge"]
[Black "Erős, Pál"]
[Result "0-1"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Pelikan (Lasker-Sveshnikov) variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bb4 7. Bd2 d5
8. exd5 Nxd5 9. Nxd5 Qxd5 10. Nc3 Qd4 11. Be2 Be6 12. O-O O-O 13. Bd3 Bg4
14. Qe1 Rad8 15. a3 Be7 16. Be3 Qd7 17. Ne2 Rfe8 18. Rd1 Qe6 19. f3 Bf5 20. Bxf5
Qxf5 21. Qc3 Qe6 22. Ng3 f5 23. Bf2 Bf6 24. Qb3 Qxb3 25. cxb3 g6 26. Ne2 Nd4
27. Nxd4 exd4 28. Rd3 Re2 29. Rb1 Rc8 30. Re1 Rxe1+ 31. Bxe1 Kf7 32. Kf2 Ke6
33. Ke2 Kd5 34. Kd1 Bg5 35. Bd2 Bf6 36. Be1 Bg5 37. Bd2 Bxd2 38. Rxd2 a5 39. Rc2
Rc6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Jennen, Herman"]
[Black "Tonteri, Ari"]
[Result "1/2-1/2"]
[ECO "D00"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn game"]
[Source "365chess.com"]

1. d4 d5 2. f3 Nc6 3. Nc3 e6 4. e3 Nf6 5. Nge2 Be7 6. g3 O-O 7. Bg2 b6 8. O-O
Bb7 9. Kh1 Na5 10. e4 dxe4 11. fxe4 c5 12. Be3 Nc4 13. Qc1 Nxe3 14. Qxe3 cxd4
15. Qxd4 Qc7 16. Bf3 Bc6 17. Qf2 Qb7 18. Qg2 Nd7 19. Nd4 Ne5 20. Nxc6 Qxc6
21. Be2 Bb4 22. Bb5 Qc5 23. Qf2 Qxf2 24. Rxf2 Bxc3 25. bxc3 Rac8 26. c4 Nxc4
27. Raf1 Ne5 28. Rd1 Rcd8 29. Rfd2 Rxd2 30. Rxd2 g6 31. Kg2 Rc8 32. Re2 Kg7
33. Ba4 Rd8 34. Bb3 Nc6 35. Kf2 Na5 36. Ke3 Nxb3 37. cxb3 Rc8 38. Kd4 Rc5 39. e5
a6 40. g4 h6 41. h4 a5 42. g5 h5 43. a4 Kf8 44. Re3 Ke7 45. Rc3 Rxc3 46. Kxc3
Kd7 47. Kd4 Kc7 48. Kc3 Kb7 49. Kd4 Kc7 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Rudenskij, Nikolai"]
[Black "Zeitler, Hans Jürgen"]
[Result "1/2-1/2"]
[ECO "B09"]
[EventDate "1978.09.10"]
[Opening "Pirc: Austrian attack (6.Bd3)"]
[Source "365chess.com"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Na6 7. O-O c5 8. d5
Nc7 9. a4 e6 10. dxe6 Bxe6 11. f5 Bd7 12. Bc4 Bc6 13. Bg5 Qd7 14. e5 dxe5
15. Nxe5 Qd4+ 16. Qxd4 cxd4 17. Nb5 Nxb5 18. axb5 Bd5 19. fxg6 Bxc4 20. gxf7+
Rxf7 21. Nxc4 Ne4 22. Rxf7 Kxf7 23. Bh4 Rc8 24. b3 d3 25. Rf1+ Ke6 26. cxd3 Bd4+
27. Kh1 Nc5 28. Re1+ Kd5 29. Re7 Rf8 30. g4 Nxd3 31. Rd7+ Ke4 32. Nd6+ Kf3
33. Nf5 Nf2+ 34. Bxf2 Bxf2 35. h3 Rc8 36. Rd3+ Ke2 37. Rd7 Kf3 38. Kh2 Rc2
39. Rd3+ Be3+ 40. Kh1 Rc1+ 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Schmeisser, André"]
[Black "Surjanto, Edy"]
[Result "0-1"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian: Mieses-Kotrvc gambit"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qd4 6. Nf3 Qd8 7. d4 g6
8. Bf4 Bg7 9. Bc4 c6 10. O-O Nf6 11. Ne5 O-O 12. Qd2 Nbd7 13. Rfe1 Nxe5 14. Bxe5
Nd5 15. Bxg7 Kxg7 16. Ne4 Qc7 17. Qg5 Qf4 18. Bxd5 Qxg5 19. Nxg5 cxd5 20. Rxe7
Kf6 21. Re5 Rd8 22. Nxh7+ Kg7 23. Ng5 Rd6 24. Nf3 b6 25. Re7 Be6 26. Re1 Rc6
27. Ng5 Kf6 28. Nxe6 fxe6 29. Rd7 Rxc2 30. Rd6 Re8 31. g3 Rd2 32. Rxd5 Rxa2
33. Rd6 Kf7 34. Rd7+ Re7 35. Rxe7+ Kxe7 36. d5 Rd2 37. Rxe6+ Kf7 38. Rd6 Ra2
39. Rc6 b5 40. Rc7+ Kf6 41. Rb7 a6 42. Rb6+ Ke5 43. Rxg6 Kxd5 44. h4 b4 45. h5
b3 46. h6 b2 47. Rb6 Ra1+ 48. Kg2 b1=Q 49. Rxb1 Rxb1 50. g4 Ke5 51. g5 Kf5
52. f4 a5 53. Kg3 a4 54. Kh4 a3 55. h7 a2 56. h8=Q Rh1+ 57. Kg3 Rxh8 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Svensson, Roger"]
[Black "Vidinha, António"]
[Result "1-0"]
[ECO "E20"]
[EventDate "1978.09.10"]
[Opening "Nimzo-Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Be7 5. Bg5 d5 6. e3 O-O 7. Nf3 Nbd7 8. Rc1
c5 9. cxd5 Nxd5 10. Bxe7 Nxc3 11. Bxd8 Nxd1 12. Rxd1 Rxd8 13. dxc5 a6 14. Be2
Re8 15. b4 Nf6 16. O-O Bd7 17. Ne5 Ba4 18. Rd4 Red8 19. Rxd8+ Rxd8 20. Bf3 Nd5
21. Rc1 Bc6 22. Rd1 Ba4 23. Rd2 Kf8 24. e4 f6 25. Nc4 Bb5 26. Na5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Tiefenbacher, Richard"]
[Black "Carlin, Geoffrey"]
[Result "1-0"]
[ECO "C06"]
[EventDate "1978.09.13"]
[Opening "French: Tarrasch, closed variation, main line"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4
f6 9. Nf4 Qe7 10. exf6 Nxf6 11. Nf3 Qf7 12. O-O Be7 13. Re1 Nh5 14. Nxd5 O-O
15. Nxe7+ Nxe7 16. Bxh7+ Kh8 17. Bc2 Nf4 18. Bxf4 Qxf4 19. Re4 Qf6 20. Rh4+ Kg8
21. Qd2 Bd7 22. Bh7+ Kf7 23. Rf4 Nf5 24. Ne5+ Ke8 25. Nxd7 Kxd7 26. d5 g6
27. dxe6+ Kxe6 28. Re1+ Kf7 29. Qd7+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Vaccani, Mario"]
[Black "Walisiak, Roman"]
[Result "1-0"]
[ECO "C58"]
[EventDate "1978.09.10"]
[Opening "Two knights defence: Paoli variation"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6
8. Qf3 Qc7 9. Bd3 Be7 10. Nc3 O-O 11. O-O h6 12. Nge4 Nxe4 13. Qxe4 f5 14. Qe2
Be6 15. Ba6 Rae8 16. d4 e4 17. a3 Bf6 18. b4 Bxd4 19. Bb2 Qe5 20. Rfd1 Bxc3
21. Bxc3 Qxc3 22. bxa5 Rd8 23. Qe1 Qxc2 24. Rdc1 Qa4 25. Qc3 Rd6 26. Be2 Rfd8
27. h3 Qb3 28. Qb4 Qxb4 29. axb4 Rd2 30. Bc4 Bxc4 31. Rxc4 Rd1+ 32. Rxd1 Rxd1+
33. Kh2 Rd6 34. Kg3 a6 35. Kf4 g6 36. h4 Kf7 37. g4 Kf6 38. gxf5 gxf5 39. Rc5
Kg6 40. h5+ Kg7 41. Kxf5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.13"]
[Round "4"]
[White "Wünsche, Klaus Peter"]
[Black "Florián, Jaromír"]
[Result "1-0"]
[ECO "E94"]
[EventDate "1978.09.10"]
[Opening "King's Indian: orthodox variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. Be3
Ne8 9. dxe5 dxe5 10. Bc5 Nd6 11. Bxd6 cxd6 12. Qxd6 Qa5 13. Qd2 Nc5 14. Rab1 Ne6
15. b4 Qc7 16. Nd5 Qd8 17. Qc2 Bd7 18. c5 Rc8 19. Bc4 b6 20. Ba6 Rc6 21. Bb7
bxc5 22. Bxc6 Bxc6 23. bxc5 Kh8 24. Nb4 Bb5 25. Rfd1 Qe8 26. c6 f5 27. exf5 gxf5
28. a4 e4 29. Ne1 Bd3 30. Nexd3 exd3 31. Rxd3 a5 32. Nd5 Nd4 33. Rxd4 Bxd4
34. c7 Rg8 35. Rc1 Qd7 36. c8=Q Qxd5 37. Qxg8+ Kxg8 38. Qc4 Qxc4 39. Rxc4 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Baretić, Dragoljub"]
[Black "Rudenskij, Nikolai"]
[Result "0-1"]
[ECO "B95"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Sicilian: Najdorf (6...e6)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qf3 Be7 8. Be2
Qa5 9. Bd2 Qc7 10. O-O O-O 11. Qg3 b5 12. Bh6 Ne8 13. Be3 b4 14. Na4 Bd7 15. b3
Bxa4 16. bxa4 Nc6 17. Nb3 Ne5 18. f4 Nc4 19. Bd4 Bf6 20. Rad1 e5 21. fxe5 Bxe5
22. Bxe5 dxe5 23. Bxc4 Qxc4 24. Qxe5 Nf6 25. Qd4 Rac8 26. e5 Ng4 27. Rfe1 Rfe8
28. Qxc4 Rxc4 29. h3 Nh6 30. Re2 Nf5 31. Rd3 h5 32. Kf2 h4 33. Na5 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Burdio Gracía, Delfín"]
[Black "Jennen, Herman"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1978.09.10"]
[Opening "King's Indian: East Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 d6 5. Nbd2 Nbd7 6. e3 O-O 7. Be2 c5 8. O-O
Qc7 9. Rc1 a6 10. h3 b5 11. Nh2 Bb7 12. Bf3 e5 13. Bxb7 Qxb7 14. dxc5 dxc5
15. e4 c4 16. Qf3 Qc6 17. Be3 Nc5 18. Bxc5 Qxc5 19. Rfd1 Qc6 20. Ng4 Nxg4
21. hxg4 Qf6 22. Qxf6 Bxf6 23. Nf3 Rfd8 24. Kf1 Kf8 25. Ke2 Ke7 26. Rxd8 Rxd8
27. Rh1 Rh8 28. g3 h6 29. g5 hxg5 30. Rxh8 Bxh8 31. Nxg5 Bf6 32. Nf3 Kd6 33. Kd2
Kc5 34. Kc2 Kd6 35. Ne1 Bd8 36. Kd1 Bb6 37. Ke2 Bd8 38. Nc2 a5 39. f4 Bb6
40. Na3 exf4 41. gxf4 Kc5 42. Nc2 Kd6 43. e5+ Kd5 44. Kf3 Bc5 45. a3 Bg1 46. Ne1
g5 47. Ng2 gxf4 48. Kxf4 Bh2+ 49. Kf5 Bxe5 50. Ne3+ Kd6 51. a4 Bg7 52. axb5 Kc5
53. b6 Kxb6 54. Nxc4+ Kb5 55. Nd6+ Kc5 56. Nxf7 Bxc3 57. bxc3 a4 58. Ne5 a3
59. Nd3+ Kc4 60. Nc1 Kxc3 61. Ke4 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Carlin, Geoffrey"]
[Black "Fesche, Svein Tore"]
[Result "0-1"]
[ECO "A40"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn: Keres defence"]
[Source "365chess.com"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. g3 f5 5. Bg2 Nf6 6. O-O Be7 7. Nc3 O-O 8. Qc2
Qe8 9. Ne1 Bxg2 10. Nxg2 Nc6 11. e3 a6 12. f3 Nb4 13. Qe2 d5 14. a3 Nc6 15. b4
Qd7 16. Bb2 Nd8 17. Rac1 Nf7 18. Nf4 c6 19. cxd5 cxd5 20. Nd3 Rfc8 21. Rc2 Ne8
22. Ne5 Nxe5 23. dxe5 Rc4 24. Rfc1 Rac8 25. Nd1 b5 26. Bd4 a5 27. Nb2 Rxc2
28. Rxc2 Rxc2 29. Qxc2 axb4 30. axb4 Bxb4 31. Nd3 Be7 32. Qb3 Qc6 33. Qb1 Nc7
34. Kg2 Qc4 35. h4 b4 36. Nf4 b3 37. Qa1 Bc5 38. Bb2 Bxe3 39. Qa3 Bxf4 40. gxf4
h6 41. Kg3 d4 42. Qe7 d3 43. Qd8+ Kh7 44. Ba3 Nd5 45. Bf8 Qxf4+ 46. Kg2 Qxe5
47. Bd6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Erős, Pál"]
[Black "Winkelmann, Max"]
[Result "1-0"]
[ECO "C08"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, open (4.exd5 exd5)"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. Bb5+ Bd7 7. Bxd7+ Qxd7
8. O-O cxd4 9. Re1+ Be7 10. Ne5 Qd8 11. Ndf3 O-O 12. Nxd4 Nbd7 13. Bg5 h6
14. Bf4 a6 15. Nec6 bxc6 16. Nxc6 Qb6 17. Nxe7+ Kh8 18. Nxd5 Qxb2 19. c4 Rac8
20. Re2 Qb7 21. Rb1 Qa8 22. Bd6 Rfd8 23. Be7 Nxd5 24. Bxd8 Rxd8 25. Qxd5 Qxd5
26. cxd5 Nf6 27. Rd1 Rxd5 28. Rxd5 Nxd5 29. Re8+ Kh7 30. Ra8 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Free, Terry"]
[Black "Vaccani, Mario"]
[Result "0-1"]
[ECO "B60"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Richter-Rauzer"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Qa5 7. Bxf6 gxf6
8. Bb5 Bd7 9. Nb3 Qc7 10. Nd5 Qb8 11. Nf4 a6 12. Be2 f5 13. exf5 Bxf5 14. c3 Qd8
15. Nh5 e5 16. Qd2 d5 17. Qxd5 Qg5 18. Qf3 O-O-O 19. Ng3 Be6 20. O-O f5 21. Rfd1
Bd6 22. Bxa6 e4 23. Bxb7+ Kxb7 24. Qe2 Kc7 25. Nd4 Nxd4 26. Rxd4 Bxg3 27. hxg3
Rxd4 28. cxd4 Rc8 29. Qb5 Kd8 30. Qb6+ Ke7 31. a4 Rc1+ 32. Rxc1 Qxc1+ 33. Kh2
Qc4 34. Qc5+ Qxc5 35. dxc5 Kd7 36. b4 Kc6 37. Kh3 f4+ 38. Kh2 e3 39. fxe3 fxe3
40. Kg1 Bd7 41. Kf1 Kd5 42. Ke2 Kd4 43. b5 Bg4+ 44. Ke1 Kxc5 45. Kf1 Kd4 46. a5
Bd7 47. b6 Bb5+ 48. Ke1 Ba6 49. Kd1 h5 50. Ke1 Kd3 51. Kd1 Bb7 52. Ke1 e2 53. g4
hxg4 54. g3 Ba6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Hansen, Åge"]
[Black "Schmeisser, André"]
[Result "0-1"]
[ECO "C05"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, closed variation"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3
cxd4 9. cxd4 f6 10. exf6 Nxf6 11. O-O Bd6 12. Bc2 O-O 13. Rb1 Bd7 14. Bg5 Nb4
15. Bxf6 Rxf6 16. Bb3 Raf8 17. a3 Nc6 18. Bc2 Rh6 19. Ng3 Kh8 20. b4 Rf4 21. Ba4
Nxd4 22. Bxd7 Nxf3+ 23. gxf3 Rfh4 24. Rc1 Bc7 25. Qd3 Rxh2 26. Bxe6 Qxe6
27. Rxc7 Rg2+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Krylov, Sergey"]
[Black "Florián, Jaromír"]
[Result "1-0"]
[ECO "C62"]
[EventDate "1978.09.14"]
[Opening "Ruy Lopez: old Steinitz defence"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. O-O Nge7 6. c3 Ng6 7. Bc4 Be7 8. b4
O-O 9. b5 Na5 10. Bd3 c5 11. bxc6 Nxc6 12. Na3 Bf6 13. Be3 Bg4 14. d5 Nce7
15. h3 Bc8 16. Rb1 Nf4 17. c4 b6 18. Nb5 Qd7 19. Bxf4 exf4 20. Qd2 Ng6 21. Rfd1
Ne5 22. Qxf4 Qd8 23. Nxe5 Bxe5 24. Qe3 g5 25. Nd4 Bd7 26. Bf1 Re8 27. g3 Qf6
28. Rd2 Rac8 29. Nf3 h6 30. Nxe5 Rxe5 31. f4 Ree8 32. Re1 Qg7 33. Kh2 f6 34. Qd4
Re7 35. Bd3 Rc5 36. Rde2 Ra5 37. Qb2 Qf7 38. e5 fxe5 39. fxe5 Qf3 40. Re3 Qh5
41. e6 Be8 42. Rf1 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Surjanto, Edy"]
[Black "Alon, Levi"]
[Result "1-0"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sveshnikov variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6
8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. exf5 Bxf5 12. c3 Bg7 13. Qf3 Bd7 14. Bd3
O-O 15. O-O f5 16. Bc2 e4 17. Qe3 Ne5 18. Bb3 Kh8 19. Rfd1 Ng4 20. Qh3 f4
21. Qh5 Rf5 22. Qxg4 Rxd5 23. Qxf4 Rh5 24. Qxd6 Ra7 25. Rd5 Rh6 26. Qf4 Rh4
27. Qg3 Bf6 28. Rad1 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Tiefenbacher, Richard"]
[Black "Atanasov, Venko"]
[Result "1/2-1/2"]
[ECO "B41"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Kan, Maroczy bind (Reti variation)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Qc7 6. Nc3 Nf6 7. Be3 d6 8. Be2
Be7 9. O-O O-O 10. Rc1 Nbd7 11. f4 b6 12. Bf3 Bb7 13. f5 e5 14. Nde2 Rfc8 15. g4
Qd8 16. Nd5 Nxd5 17. cxd5 Bg5 18. Qd2 Bxe3+ 19. Qxe3 b5 20. Kg2 Qb6 21. Qxb6
Nxb6 22. Rxc8+ Rxc8 23. Rc1 b4 24. Rxc8+ Bxc8 25. b3 a5 26. Nc1 Ba6 27. Be2 Bxe2
28. Nxe2 Kf8 29. Kf3 Ke7 30. g5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Tonteri, Ari"]
[Black "Boerefijn, Martinus"]
[Result "0-1"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com."]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bd7 7. O-O O-O-O
8. a3 Nxd4 9. b4 Nxf3+ 10. Qxf3 Qb6 11. Be3 Qe6 12. h3 a6 13. Bxd7+ Qxd7 14. Bf4
e6 15. Ne2 Bd6 16. Bg5 Be7 17. Qb3 Kb8 18. Nc3 Nd5 19. Bxe7 Qxe7 20. Na4 b6
21. c4 Nf4 22. Qf3 Qg5 23. Rfd1 e5 24. Nc3 f5 25. Nd5 Ng6 26. Kh2 Nh4 27. Qg3
Qxg3+ 28. Kxg3 Ng6 29. Rd2 c6 30. Rc1 cxd5 31. cxd5 Rd6 32. Rdc2 Rhd8 33. Rc7
R8d7 34. Rc8+ Kb7 35. Re8 Rc7 36. Rd1 Rc8 37. Re6 Rcd8 38. Rxd6 Rxd6 39. h4 Ne7
40. f4 e4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Vidinha, António"]
[Black "Slagle, James Robert"]
[Result "0-1"]
[ECO "C02"]
[EventDate "1978.09.10"]
[Opening "French: advance, Milner-Barry gambit"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O
Nxd4 9. Nxd4 Qxd4 10. Qf3 Ne7 11. Nc3 a6 12. Re1 Nc6 13. Qg3 Be7 14. Qxg7 O-O-O
15. Qg3 Rdg8 16. Qe3 Qxe3 17. fxe3 Nxe5 18. Bf1 Nf3+ 19. Kf2 Nxe1 20. Kxe1 Bc6
0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Walisiak, Roman"]
[Black "Svensson, Roger"]
[Result "1-0"]
[ECO "A05"]
[EventDate "1978.09.10"]
[Opening "Reti: Nimzovich-Larsen attack"]
[Source "365chess.com"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O c5 7. d3 Nc6 8. Nbd2
Bd7 9. e4 Qc8 10. Re1 Bg4 11. c3 Ne5 12. Qc2 Nxf3+ 13. Nxf3 Bh3 14. Bh1 Bd7
15. e5 dxe5 16. Nxe5 Bf5 17. Qe2 Re8 18. Rad1 Ng4 19. c4 Nxe5 20. Bxe5 Bg4
21. f3 Bxe5 22. Qxe5 Bd7 23. f4 e6 24. h4 h5 25. Bf3 Bc6 26. Be2 b6 27. d4 cxd4
28. Rxd4 Rd8 29. Red1 Rxd4 30. Qxd4 Qf8 31. Qd6 Qxd6 32. Rxd6 Be4 33. Kf2 Kf8
34. Ke3 Ke7 35. Rd4 Bf5 36. Bf3 Rd8 37. Rxd8 Kxd8 38. Kd4 f6 39. b4 Kc7 40. c5
bxc5+ 41. Kxc5 Bc2 42. a3 e5 43. fxe5 fxe5 44. Kd5 e4 45. Bxe4 Bxe4+ 46. Kxe4
Kc6 47. a4 Kd6 48. Kf4 Kd5 49. Kg5 Kc4 50. Kxg6 Kxb4 51. Kxh5 Kxa4 52. g4 a5
53. g5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.14"]
[Round "5"]
[White "Zeitler, Hans Jürgen"]
[Black "Wünsche, Klaus Peter"]
[Result "1-0"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Pelikan (Lasker-Sveshnikov) variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. a4 h6 8. Bc4
a6 9. Na3 Be6 10. O-O Rc8 11. f4 exf4 12. Bxf4 Ne5 13. Bxe6 fxe6 14. Qe1 Qb6+
15. Be3 Qxb2 16. Ne2 d5 17. Qg3 Bxa3 18. Bd4 Bc5 19. Qxe5 Qb6 20. exd5 O-O
21. Rab1 Qa7 22. dxe6 Bxd4+ 23. Qxd4 Qxd4+ 24. Nxd4 Rfd8 25. Nf5 Rxc2 26. Rxb7
Ne8 27. Re7 Rc7 28. Rxc7 Nxc7 29. e7 Rd5 30. e8=Q+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Atanasov, Venko"]
[Black "Wünsche, Klaus Peter"]
[Result "0-1"]
[ECO "D00"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn: stonewall attack"]
[Source "365chess.com"]

1. d4 Nf6 2. e3 d5 3. Bd3 c5 4. c3 Nc6 5. f4 Bg4 6. Nf3 e6 7. Nbd2 Bh5 8. O-O
Bd6 9. g3 Rc8 10. Kg2 a6 11. Qe1 Bg6 12. Bxg6 hxg6 13. dxc5 Bxc5 14. e4 d4
15. Nb3 Ba7 16. Bd2 dxc3 17. Bxc3 Ng4 18. Kh1 Qd3 19. h4 Ne3 20. Rf2 Nc2 21. Qf1
Qxf1+ 22. Raxf1 Bxf2 23. Rxf2 Ne3 24. Re2 Ng4 25. Nc5 b6 26. Nxa6 O-O 27. Nb4
Nxb4 28. Bxb4 Rfd8 29. Bc3 Rd3 30. Kg2 Ne3+ 31. Kh3 Nd1 32. Ne5 Nxc3 33. bxc3
Rdxc3 34. Rb2 Rb8 35. Nd7 Rb7 36. Nxb6 Rc6 37. Nc4 Rxb2 38. Nxb2 Rc2 39. Nd3
Rxa2 40. e5 f6 41. exf6 gxf6 42. Nc5 Kf7 43. Kg4 Ra3 44. Kh3 Ke7 45. Ne4 Re3
46. Nf2 Re2 47. Kg2 Ra2 48. g4 Kd6 49. h5 gxh5 50. gxh5 Ra3 51. h6 Ra8 52. Ne4+
Ke7 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Boerefijn, Martinus"]
[Black "Rudenskij, Nikolai"]
[Result "0-1"]
[ECO "A42"]
[EventDate "1978.09.10"]
[Opening "Modern defence: Averbakh system"]
[Source "365chess.com"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nd7 5. Be3 e5 6. d5 Ne7 7. g4 O-O 8. h4 f5
9. gxf5 gxf5 10. exf5 Nxf5 11. Bg5 Nf6 12. Bd3 h6 13. Bxf6 Qxf6 14. Ne4 Qg6
15. Ng3 e4 16. h5 Qf6 17. Nxe4 Qxb2 18. Rb1 Qxa2 19. Ne2 Qa5+ 20. Qd2 Qxd2+
21. Kxd2 b6 22. Nf4 Nd4 23. Ng6 Rf7 24. Ke3 a5 25. Rhg1 a4 26. Rg2 a3 27. Rbg1
Nf5+ 28. Kd2 a2 29. Nf6+ Rxf6 30. Bxf5 Bxf5 31. Ne7+ Kf8 32. Rxg7 a1=Q 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Carlin, Geoffrey"]
[Black "Svensson, Roger"]
[Result "1/2-1/2"]
[ECO "A57"]
[EventDate "1978.09.10"]
[Opening "Benko gambit: Zaitsev system"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 d6 7. Bxb5+ Bd7 8. Qe2
g6 9. Nf3 Bg7 10. e5 dxe5 11. Nxe5 Bxb5 12. Qxb5+ Nfd7 13. Nc6 Qb6 14. Qxb6 Nxb6
15. Nxb8 Rxb8 16. Bf4 Rb7 17. Rc1 O-O 18. O-O Ra8 19. Rfd1 Na4 20. Nxa4 Rxa4
21. d6 Bd4 22. dxe7 Rxe7 23. Bd6 Re2 24. Bxc5 Bxc5 25. Rxc5 Rxb2 26. Rcc1 Raxa2
27. Rf1 Kg7 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Fesche, Svein Tore"]
[Black "Tiefenbacher, Richard"]
[Result "1-0"]
[ECO "E00"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn game"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. g3 Ne4 4. a3 f5 5. Bg2 b6 6. Nh3 Bb7 7. O-O Be7 8. Nd2
O-O 9. Qc2 Nd6 10. Bxb7 Nxb7 11. e4 Nc6 12. Nf3 fxe4 13. Qxe4 Nd6 14. Qd3 Nf7
15. Re1 Bf6 16. Nf4 e5 17. dxe5 Ncxe5 18. Nxe5 Bxe5 19. Bd2 Bxf4 20. Bxf4 d6
21. Re4 Qf6 22. Qe2 g5 23. Be3 Ne5 24. f4 Qg6 25. Bd2 gxf4 26. Bxf4 Nf7 27. Rd1
Kh8 28. Re6 Qg7 29. Rd5 Ne5 30. Bxe5 dxe5 31. Rdxe5 Rad8 32. Re8 Rdxe8 33. Rxe8
Rxe8 34. Qxe8+ Qg8 35. Qxg8+ Kxg8 36. Kf2 Kf7 37. Ke3 Ke6 38. Ke4 h6 39. g4 c5
40. h4 a6 41. b3 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Florián, Jaromír"]
[Black "Surjanto, Edy"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1978.09.10"]
[Opening "French: Chigorin variation"]
[Source "365chess.com"]

1. e4 e6 2. Qe2 c6 3. f4 d5 4. d3 dxe4 5. dxe4 Nd7 6. Nf3 Ngf6 7. Nc3 Be7
8. Bd2 Qc7 9. g3 b6 10. Bh3 Nc5 11. O-O-O a5 12. f5 exf5 13. Bf4 Qa7 14. exf5
Ba6 15. Qe3 O-O 16. Nd4 Rac8 17. Rhe1 Rfe8 18. Qf3 Qa8 19. Bg2 Bb7 20. g4 b5
21. g5 Nfd7 22. f6 gxf6 23. Rxe7 Rxe7 24. gxf6 Nxf6 25. Nf5 Nd5 26. Nxd5 cxd5
27. Nxe7+ Kf8 28. Nxc8 Qxc8 29. Bh6+ Ke8 30. Qf6 Qg4 31. Bxd5 Bxd5 32. Bg5 Qxd1+
33. Kxd1 Bf3+ 34. Kc1 Kd7 35. Qxf7+ Kd6 36. Qxf3 b4 37. Qd3+ Nxd3+ 38. cxd3 a4
39. Kd2 a3 40. b3 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Jennen, Herman"]
[Black "Erős, Pál"]
[Result "1/2-1/2"]
[ECO "E75"]
[EventDate "1978.09.16"]
[Opening "King's Indian: Averbakh, main line"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. d5 e6 8. Qd2 Qa5
9. Nf3 exd5 10. exd5 Bg4 11. O-O Nbd7 12. h3 Bxf3 13. Bxf3 Rfe8 14. Rae1 a6
15. a4 Qd8 16. Bd1 Rxe1 17. Rxe1 Qf8 18. Ne4 Re8 19. Nxf6+ Bxf6 20. Rxe8 Qxe8
21. Be3 Qf8 22. b3 Qg7 23. Bh6 Bc3 24. Qf4 Qe5 25. Qxe5 Bxe5 26. Kf1 f5 27. Bd2
Kf7 28. f4 Bd4 29. Ke2 Nf6 30. Bc2 Ne8 31. Kf3 Kf6 32. g4 Ng7 33. Ba5 Ke7
34. gxf5 gxf5 35. Kg3 Bf6 36. Bd1 Kd7 37. Be2 Ke8 38. Bd2 Kf7 39. b4 cxb4
40. Bxb4 Be7 41. Bd3 Kg6 42. Bc2 Ne8 43. a5 Nf6 44. Ba4 Kh5 45. Bc2 Kg6 46. Kf3
Ne8 47. Ba4 Kf7 48. Bd7 Bd8 49. Bc8 b6 50. axb6 Bxb6 51. Bxa6 Bc5 52. Bc3 Nf6
53. Bc8 Ne4 54. Be1 Kg6 55. Bd7 Ba3 56. Ba4 Bc1 57. Bb5 Nd2+ 58. Kg3 Ne4+
59. Kf3 Nd2+ 60. Kg3 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Schmeisser, André"]
[Black "Free, Terry"]
[Result "1-0"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian: Kiel variation"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb4 5. Qa4+ N8c6 6. d5 b5 7. cxb5 Nd4
8. Na3 Qxd5 9. Qxb4 Qe4+ 10. Kd1 Bg4+ 11. f3 Rd8 12. Bd2 Bh5 13. Ne2 Qd5
14. Nxd4 Qxd4 15. Qxd4 Rxd4 16. Rc1 Kd8 17. Rc4 e5 18. Rxd4+ exd4 19. Nc4 f6
20. Bd3 Bf7 21. Na5 Kd7 22. Bf5+ Be6 23. Bxe6+ Kxe6 24. Re1+ Kd7 25. Nc6 Bc5
26. b4 Bd6 27. Nxa7 Ra8 28. Nc6 Rxa2 29. Nxd4 Ra1+ 30. Ke2 Rxe1+ 31. Bxe1 Bxh2
32. g3 Bg1 33. Bf2 Bxf2 34. Kxf2 g6 35. Ke3 Kd6 36. Kd3 Kd5 37. Nc6 f5 38. f4
Kd6 39. Kd4 h6 40. Ne5 g5 41. Nf7+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Slagle, James Robert"]
[Black "Alon, Levi"]
[Result "1-0"]
[ECO "A34"]
[EventDate "1978.09.10"]
[Opening "English: symmetrical, three knights system"]
[Source "365chess.com"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. cxd5 Nxd5 5. e4 Nb4 6. Bc4 Be6 7. Bxe6 Nd3+
8. Kf1 fxe6 9. Ng5 Qd7 10. Qf3 Ne5 11. Qh3 Qd3+ 12. Qxd3 Nxd3 13. Ke2 Nf4+
14. Kf1 h6 15. Nf3 Nd3 16. Ke2 Nb4 17. d4 Nc2 18. Rb1 cxd4 19. Nb5 d3+ 20. Kxd3
Nb4+ 21. Ke2 N8a6 22. a3 Nc6 23. Rd1 g5 24. Be3 Bg7 25. b4 g4 26. Nfd4 Nxd4+
27. Bxd4 Bxd4 28. Rxd4 e5 29. Rd5 Rc8 30. Rbd1 Rf8 31. R1d2 Rf4 32. Rxe5 Kf7
33. Nxa7 Rc4 34. Nb5 Kf6 35. Rf5+ Rxf5 36. exf5 Nb8 37. Nd4 Ke5 38. Ke3 h5
39. f3 Nd7 40. fxg4 hxg4 41. Nc6+ bxc6 42. Rxd7 Rc3+ 43. Kd2 Rxa3 44. Rxe7+ Kxf5
45. g3 Ra2+ 46. Kc3 Rxh2 47. Re3 Ra2 48. Kd4 Rc2 49. Re5+ Kf6 50. Rc5 Rd2+
51. Ke4 Rd6 52. Rf5+ Kg6 53. Rc5 Kf6 54. Rc4 Kg5 55. Rc5+ Kf6 56. Rc4 Kg5
57. Rc5+ Kf6 58. Rf5+ Kg6 59. Rf8 Kg5 60. Rg8+ Kh5 61. Ra8 Kg5 62. Ra6 Kf6
63. Rb6 Kg5 64. b5 Re6+ 65. Kd3 Rd6+ 66. Kc3 Rf6 67. bxc6 Kf5 68. c7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Tonteri, Ari"]
[Black "Burdio Gracía, Delfín"]
[Result "0-1"]
[ECO "B57"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sozin, not Scheveningen"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qa5 7. f3 g6 8. Be3
Bg7 9. Qd2 Qb4 10. Bb5 Bd7 11. a3 Qa5 12. Nb3 Qc7 13. Bg5 O-O 14. O-O-O Be6
15. Nd5 Bxd5 16. exd5 Ne5 17. Rhe1 a6 18. Bf1 Rac8 19. f4 Nc4 20. Bxc4 Qxc4
21. Rxe7 Qxb3 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Vaccani, Mario"]
[Black "Baretić, Dragoljub"]
[Result "0-1"]
[ECO "A04/11"]
[EventDate "1978.09.10"]
[BlackElo "2305"]
[Opening "Neo-closed Sicilian: King's Indian attack"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d3 d6 4. g3 g6 5. Bg2 Bg7 6. O-O e5 7. c3 Nge7 8. Nbd2
O-O 9. Re1 h6 10. h3 Be6 11. Nf1 Qd7 12. g4 Rad8 13. Ng3 f5 14. Nh2 fxg4
15. hxg4 Qe8 16. Qe2 Qf7 17. Be3 b6 18. Rf1 Kh7 19. f4 exf4 20. Bxf4 Qe8 21. Rf2
Qd7 22. Ngf1 Ne5 23. Ne3 Ng8 24. d4 cxd4 25. cxd4 Nc6 26. d5 Nd4 27. Qf1 Bf7
28. Nc4 Qe7 29. Bxd6 Rxd6 30. Nxd6 Qxd6 31. Re1 Qg3 32. Kh1 Be5 33. Bh3 Bxd5
34. Qg2 Rxf2 35. Qxg3 Bxg3 36. Nf1 Bc4 37. Nxg3 Nf3 38. Bg2 Nxe1 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Vidinha, António"]
[Black "Hansen, Åge"]
[Result "0-1"]
[ECO "B88"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sozin, Leonhardt variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Bc4 Nf6 6. Nc3 e6 7. O-O Be7
8. Be3 O-O 9. f4 a6 10. a4 Qc7 11. f5 Nxd4 12. Qxd4 e5 13. Qd3 b6 14. Bb3 Bb7
15. Rad1 Ng4 16. Bd2 Qc5+ 17. Kh1 Bd8 18. Qg3 Nf6 19. Bh6 Ne8 20. f6 g6 21. Bxf8
Kxf8 22. Qg5 Qc7 23. Qh6+ Kg8 24. Rf3 Nxf6 25. Rdf1 Ng4 26. Bxf7+ Qxf7 27. Rxf7
Nxh6 28. Rxb7 Rc8 29. Rf3 g5 30. Rd7 g4 31. Rg3 Bh4 32. Rd3 Nf7 33. g3 Rd8
34. Rxd8+ Bxd8 35. Nd5 Ng5 36. Ne3 h5 37. Rxd6 Be7 38. Rxb6 Bc5 39. Rb8+ Kf7
40. Rb7+ Ke6 41. Nc4 Nxe4 42. Ra7 Bxa7 43. Na5 Kd5 44. c4+ Kc5 45. b4+ Kd6
46. c5+ Bxc5 47. b5 axb5 48. axb5 Kc7 49. Nc4 Bd4 50. b6+ Kb7 51. Kg2 Ng5
52. Nxe5 Bxe5 53. Kh1 Kxb6 54. Kg2 Kc5 55. Kh1 Kd4 56. Kg2 Ke4 57. Kh1 Kf3
58. Kg1 Bxg3 59. Kh1 Bxh2 60. Kxh2 g3+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Winkelmann, Max"]
[Black "Walisiak, Roman"]
[Result "0-1"]
[ECO "D10"]
[EventDate "1978.09.10"]
[Opening "QGD Slav defence: exchange variation"]
[Source "365chess.com"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nc6 5. e3 Nf6 6. Bd3 e6 7. O-O Bd6 8. Nc3
O-O 9. b3 a6 10. Bb2 b5 11. a3 Bb7 12. Rc1 Rc8 13. b4 Qe7 14. Qe2 Rfe8 15. Rfe1
e5 16. dxe5 Nxe5 17. Nxe5 Qxe5 18. g3 Qe6 19. Qf1 Be5 20. Ba1 Bxc3 21. Bxc3 Ne4
22. Bxe4 dxe4 23. Qe2 Qh3 24. Qf1 Qh6 25. Qe2 Bd5 26. Bd4 Be6 27. f4 Qg6 28. Rc5
Rxc5 29. Bxc5 h5 30. Qf2 h4 31. Rd1 Bc4 32. Rd6 Qg4 33. Qg2 h3 34. Qf2 Bd3
35. Rxd3 exd3 36. Qd2 Qf3 37. Bd4 Re4 38. Qb2 Rxe3 39. Bxe3 Qxe3+ 40. Qf2 Qc1+
41. Qf1 d2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.16"]
[Round "6"]
[White "Zeitler, Hans Jürgen"]
[Black "Krylov, Sergey"]
[Result "0-1"]
[ECO "B30"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Nimzovich-Rossolimo attack"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Na3 g6 5. c3 Bg7 6. O-O Nf6 7. e5 Nd5 8. d4
cxd4 9. cxd4 O-O 10. Bc4 Nc7 11. Be3 d5 12. exd6 exd6 13. d5 Qxb2 14. dxc6 Qxa3
15. cxb7 Bxb7 16. Rb1 Be4 17. Rb3 Qa4 18. Bd3 Bd5 19. Rb8 Qxa2 20. Rxf8+ Rxf8
21. Qc1 Ne6 22. Rd1 a5 23. Bb1 Qb3 24. Nd4 Qb7 25. f3 a4 26. Nxe6 fxe6 27. Qa3
Qb3 28. Qxb3 axb3 29. Be4 Bxe4 30. fxe4 b2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Alon, Levi"]
[Black "Vidinha, António"]
[Result "1-0"]
[ECO "C47"]
[EventDate "1978.09.10"]
[Opening "Four knights: Belgrade gambit"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 d6 6. Nxd4 Be6 7. Bg5 Bxd5
8. exd5 Ne5 9. Bb5+ Ned7 10. O-O Be7 11. Bxf6 Bxf6 12. Re1+ Kf8 13. Re4 a6
14. Ba4 b5 15. Nc6 Qc8 16. Bb3 Bxb2 17. Rb1 Bf6 18. Qd2 Nc5 19. Re2 Qf5 20. Rbe1
g6 21. Qh6+ Bg7 22. Qe3 Qd7 23. Qf4 h6 24. Re7 Qf5 25. Qe3 Qd7 26. Rxd7 Nxd7
27. Qe7+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Atanasov, Venko"]
[Black "Vaccani, Mario"]
[Result "1-0"]
[ECO "B22"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Alapin (...d5 exd5...Qxd5)"]
[Source "365chess.com"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e5 5. dxe5 Qxe5+ 6. Be2 Nc6 7. Nf3 Qc7
8. O-O Nf6 9. Na3 a6 10. Nc4 Be7 11. a4 b6 12. Qc2 O-O 13. Bg5 Be6 14. Ne3 Rad8
15. Bxa6 Ng4 16. Bxe7 Qxe7 17. Rfe1 Qf6 18. Bd3 h5 19. Nxg4 hxg4 20. Nd2 Ne5
21. Bf1 Qf4 22. Qe4 Qg5 23. Qxe5 Qxd2 24. Qe2 Qg5 25. b4 cxb4 26. cxb4 Rd2
27. Qa6 Qd8 28. a5 bxa5 29. bxa5 Qd4 30. Qb6 Qxb6 31. axb6 Rb8 32. Reb1 Rd6
33. b7 Rdd8 34. g3 Bd5 35. Bg2 Bxg2 36. Kxg2 Kf8 37. Ra5 Ke7 38. Rg5 g6 39. Rxg4
Rd7 40. Rgb4 Kd8 41. Kf3 Rd6 42. R1b2 Rc6 43. Kg4 Kc7 44. h4 Rc5 45. Rb5 Rc6
46. Kg5 Kd7 47. Ra5 Rc7 48. Kf6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Baretić, Dragoljub"]
[Black "Zeitler, Hans Jürgen"]
[Result "1-0"]
[ECO "B43"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Sicilian: Kan (5.Nc3)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. O-O Nc6
8. Kh1 Nxd4 9. Qxd4 Bc5 10. Qd3 b5 11. f4 d6 12. e5 dxe5 13. fxe5 Nd7 14. Ne4
Nxe5 15. Qc3 Bb6 16. Qa3 Qe7 17. Nd6+ Kf8 18. Bg5 Qxg5 19. Nxc8+ Kg8 20. Nxb6
Rb8 21. Qc5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Erős, Pál"]
[Black "Boerefijn, Martinus"]
[Result "1/2-1/2"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bd7 7. O-O O-O-O
8. Qe2 Bg4 9. Bxc6 bxc6 10. h3 Bh5 11. g4 Bg6 12. Ne5 Qb6 13. a4 e6 14. Be3 Nd5
15. a5 Qb7 16. a6 Qa8 17. Qc4 Rd6 18. Na4 f6 19. Nd3 Nxe3 20. fxe3 Bxd3 21. cxd3
h5 22. g5 Rd5 23. h4 Kd7 24. e4 Rb5 25. Nc5+ Bxc5 26. dxc5 Ke7 27. Qc3 Rf8
28. Rf2 Qc8 29. Raf1 e5 30. Rf5 Qe6 31. Qc2 Qa2 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Free, Terry"]
[Black "Carlin, Geoffrey"]
[Result "1-0"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Qxd4 6. O-O-O h5 7. Qh4 Be7 8. Bg5 Bxg5+ 9. Qxg5 Qf6 10. Qg3 c6 11. Nxe4 Qh6+ 12. Kb1 Nf6 13. Nd6+ Ke7 14. Qa3 Nd5 15. Nf5+ Kf6 16. Nxh6 Rxh6 17. Bd3 Nd7 18. Ne2 h4 19. Nc3 Nxc3+ 20. Qxc3+ Ke7 21. Qxg7 Rf6 22. Qg5 Nb6 23. Qxh4 Bd7 24. Qb4+ Ke8 25. h4 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Hansen, Åge"]
[Black "Slagle, James Robert"]
[Result "1-0"]
[ECO "C07"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, open variation"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. exd5 Qxd5 6. Ndf3 cxd4 7. Nxd4 Nxd4
8. cxd4 Nf6 9. Nf3 Be7 10. Be2 O-O 11. O-O Rd8 12. Be3 Bd7 13. a3 Bb5 14. Re1
Rac8 15. Bxb5 Qxb5 16. Re2 Nd5 17. h3 Rc7 18. Rc2 Rdc8 19. Rxc7 Rxc7 20. Rc1 Qd7
21. Ne5 Qc8 22. Rxc7 Qxc7 23. Qa4 Qc8 24. Qxa7 Nxe3 25. fxe3 Qc1+ 26. Kh2 h5
27. Qxb7 Qxe3 28. Qf3 Qxd4 29. Qxf7+ Kh7 30. Qxh5+ Kg8 31. Qf7+ Kh7 32. Qg6+ Kg8
33. Qxe6+ Kh7 34. Qxe7 Qf4+ 35. Kg1 Qe3+ 36. Kf1 Qc1+ 37. Kf2 Qd2+ 38. Kg3 Qe3+
39. Kg4 Qe4+ 40. Kg5 Qxg2+ 41. Ng4 Qxh3 42. Qe4+ Kg8 43. Qe8+ Kh7 44. Qh5+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Krylov, Sergey"]
[Black "Fesche, Svein Tore"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1978.09.10"]
[Opening "French: King's Indian attack"]
[Source "365chess.com"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 b6 5. c3 Bb7 6. e5 Nfd7 7. Be2 c5 8. O-O
Nc6 9. d4 Be7 10. Re1 Rc8 11. Nf1 cxd4 12. cxd4 Bb4 13. Bd2 Bxd2 14. Qxd2 Qe7
15. Rac1 O-O 16. Bd3 Nb4 17. Bb1 Rxc1 18. Rxc1 Rc8 19. Rxc8+ Bxc8 20. a3 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Rudenskij, Nikolai"]
[Black "Florián, Jaromír"]
[Result "1-0"]
[ECO "C62"]
[EventDate "1978.09.10"]
[Opening "Ruy Lopez: old Steinitz defence"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 f6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8. c4 a3
9. Nxa3 Ne7 10. Qa4 Kf7 11. Nc2 Qe8 12. Nb4 Bg4 13. Be3 a5 14. Nd5 Qxc6 15. Qxc6
Nxc6 16. Nxc7 Rb8 17. Nb5 Nb4 18. O-O-O Nxa2+ 19. Kb1 Nb4 20. Nxd6+ Bxd6
21. Rxd6 Rhc8 22. Rc1 Be6 23. Nd2 a4 24. Rc3 Nc6 25. Ra3 Ra8 26. b3 Ne7 27. Rxa4
Rxa4 28. bxa4 Bxc4 29. Nxc4 Rxc4 30. a5 Rxe4 31. a6 Ra4 32. a7 Nc8 33. Rd2 Nxa7
34. Rd7+ Kg6 35. Rxa7 Rc4 36. Kb2 f5 37. Kb3 Rc6 38. Rb7 f4 39. Rb6 Rxb6+
40. Bxb6 Kf5 41. Kc4 g5 42. Kd5 h5 43. f3 g4 44. Bc7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Surjanto, Edy"]
[Black "Tonteri, Ari"]
[Result "0-1"]
[ECO "B50"]
[EventDate "1978.09.10"]
[Opening "Sicilian: 2...d6 3.Bc4"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. O-O Nf6 5. d3 e6 6. Nc3 Be7 7. d4 cxd4 8. Nxd4
O-O 9. Nf3 a6 10. a3 b6 11. Bd3 Bb7 12. Ne2 Qc7 13. Nf4 Ne5 14. Re1 Rfd8 15. Bd2
Nxf3+ 16. Qxf3 d5 17. e5 Ne4 18. Bc3 Bc5 19. Bxe4 dxe4 20. Qg3 Kh8 21. Nh5 Rg8
22. Qf4 Rad8 23. Red1 Bd5 24. Qg3 Qb7 25. Bd2 Be7 26. Nf4 Qc7 27. Rac1 Bb7
28. b4 Rd7 29. Nh3 Rgd8 30. Ng5 Bxg5 31. Qxg5 Rd5 32. c3 h6 33. Qe3 Qd7 34. Rc2
Rd3 35. Qe2 Qd5 36. Rb2 Qxe5 37. Qe1 Qd5 38. h3 e3 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Svensson, Roger"]
[Black "Winkelmann, Max"]
[Result "0-1"]
[ECO "E28"]
[EventDate "1978.09.10"]
[Opening "Nimzo-Indian: Saemisch variation"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc3 b6 7. Bd3 Bb7 8. f3
c5 9. Ne2 d6 10. O-O Nc6 11. Qc2 e5 12. Rd1 Qe7 13. Ng3 Qc7 14. Ne4 Nxe4
15. Bxe4 h6 16. dxc5 dxc5 17. Bd5 Rad8 18. e4 Kh8 19. Be3 Ne7 20. Bxb7 Qxb7
21. Rxd8 Rxd8 22. Rd1 Qc7 23. Rxd8+ Qxd8 24. Qd2 Qxd2 25. Bxd2 Nc6 26. Kf2 Na5
27. Ke2 Nxc4 28. Bc1 b5 29. h4 Kg8 30. Kd3 Kf8 31. a4 a6 32. axb5 axb5 33. g4 f6
34. Ke2 Kf7 35. Kf2 Ke6 36. Kg3 b4 37. cxb4 cxb4 38. g5 hxg5 39. hxg5 b3
40. gxf6 gxf6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Tiefenbacher, Richard"]
[Black "Schmeisser, André"]
[Result "1/2-1/2"]
[ECO "C06"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, closed variation, main line"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4
Qb6 9. Nf3 f6 10. exf6 Nxf6 11. O-O Bd6 12. Nf4 O-O 13. Re1 Re8 14. Ng5 Bxf4
15. Bxf4 Bd7 16. Be5 Re7 17. Re3 Rf8 18. Bd6 e5 19. Bxe7 Nxe7 20. Rxe5 Ng6
21. Bxg6 hxg6 22. Qd2 Ng4 23. Nf3 Nxe5 24. Nxe5 Bb5 25. a4 Qa6 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Walisiak, Roman"]
[Black "Jennen, Herman"]
[Result "0-1"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. Bd2 Qc7 7. a4 Bf5
8. Bc4 e6 9. O-O Be7 10. Ne2 Nbd7 11. Bf4 Bd6 12. Bxd6 Qxd6 13. c3 h6 14. Ng3
Bh7 15. Re1 O-O 16. Ne5 Rad8 17. Qb3 Qc7 18. Nxd7 Rxd7 19. Re5 Rfd8 20. Rae1 Ng4
21. R5e2 Nf6 22. Qa3 b6 23. b4 Rc8 24. Qb3 c5 25. bxc5 bxc5 26. d5 exd5 27. Bxd5
Bg6 28. Bc4 Rcd8 29. f3 Kh7 30. Qa3 Rd1 31. Nf1 Rxe1 32. Rxe1 Nh5 33. g3 Qc6
34. Kf2 f5 35. Re5 Rc8 36. Bd5 Qd6 37. f4 Nf6 38. Ne3 Ne4+ 39. Rxe4 fxe4 40. c4
Rb8 41. a5 Rb4 42. Qc3 Qb8 43. f5 Rb2+ 44. Kg1 Rb1+ 45. Kg2 Qb2+ 46. Qxb2 Rxb2+
47. Kh3 Be8 48. Bxe4 Re2 49. f6+ Kh8 50. fxg7+ Kxg7 51. Nf5+ Kf6 52. Bf3 Rf2
53. Nh4 Ra2 54. g4 Bd7 55. Kg3 Rxa5 56. Bd5 Ra1 57. Nf3 a5 58. h4 a4 59. Kf4 Rf1
60. g5+ hxg5+ 61. hxg5+ Kg7 62. Ke5 Rxf3 63. Bxf3 Kg6 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.17"]
[Round "7"]
[White "Wünsche, Klaus Peter"]
[Black "Burdio Gracía, Delfín"]
[Result "1-0"]
[ECO "E91"]
[EventDate "1978.09.10"]
[Opening "King's Indian: 6.Be2"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 c6 7. O-O Nbd7 8. e5
Ne8 9. e6 fxe6 10. Ng5 Ndf6 11. Bd3 Nc7 12. Qe2 Qe8 13. Bd2 Bd7 14. a4 Rd8
15. Rad1 Bc8 16. b3 b6 17. Nce4 e5 18. dxe5 dxe5 19. Bc3 Nxe4 20. Bxe4 Rxd1
21. Rxd1 Ne6 22. Nxe6 Bxe6 23. Bf3 e4 24. Bxg7 exf3 25. Qxe6+ Kxg7 26. Rd7 Rf7
27. Rxa7 fxg2 28. Qe5+ Kh6 29. Qe3+ Kg7 30. Qd4+ Rf6 31. Qxb6 Re6 32. Qd4+ Kh6
33. Kxg2 Qf7 34. Rd7 g5 35. h3 Qg6 36. Qd3 Qf6 37. Rd4 Re1 38. Re4 Qg6 39. Re3
Qxd3 40. Rxd3 Rb1 41. Re3 Kg6 42. Re6+ Kf5 43. Rxc6 Rxb3 44. a5 Ra3 45. a6 h5
46. Rb6 g4 47. h4 e5 48. c5 Ra5 49. c6 Ke6 50. c7+ Kd7 51. Rc6 Kc8 52. Rh6 Kxc7
53. Rxh5 Rxa6 54. Rxe5 Kd7 55. Kg3 Rf6 56. Re2 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Boerefijn, Martinus"]
[Black "Baretić, Dragoljub"]
[Result "0-1"]
[ECO "B90"]
[EventDate "1978.09.10"]
[BlackElo "2305"]
[Opening "Sicilian: Najdorf, Adams attack"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 g6 7. Be3 Bg7 8. Qd2
Nc6 9. Bc4 O-O 10. f3 Bd7 11. g4 Qa5 12. Nde2 Ne5 13. Kf2 Nxc4 14. Qc1 Nxe3
15. Qxe3 Bc6 16. h4 Qc5 17. h5 Nd7 18. Rh3 Ne5 19. g5 f5 20. hxg6 hxg6 21. Rh4
Ng4+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Burdio Gracía, Delfín"]
[Black "Tiefenbacher, Richard"]
[Result "1/2-1/2"]
[ECO "A82"]
[EventDate "1978.09.18"]
[Opening "Dutch: Staunton gambit"]
[Source "365chess.com"]

1. d4 f5 2. e4 fxe4 3. Nc3 g6 4. Nxe4 Bg7 5. Nf3 d5 6. Ng3 Bg4 7. Be3 Nf6
8. Bd3 O-O 9. Qd2 Bxf3 10. gxf3 Nc6 11. O-O-O e5 12. h4 exd4 13. Bh6 Ne5
14. Bxg7 Nxd3+ 15. Qxd3 Kxg7 16. h5 Qd6 17. Qxd4 c5 18. Qd2 Rh8 19. Qg5 Kf7
20. hxg6+ hxg6 21. Rhg1 Rag8 22. Rh1 d4 23. Ne4 Nxe4 24. fxe4 b6 25. f4 Qe7
26. Rxh8 Rxh8 27. Qg2 Qh4 28. Rf1 Qh3 29. Qe2 Qe3+ 30. Qxe3 dxe3 31. Kd1 Rh2
32. Re1 Rd2+ 33. Kc1 Rf2 34. Rxe3 Rxf4 35. Kd2 Rg4 36. a4 Ke6 37. b3 Ke5 38. Kd3
g5 39. c3 Rf4 40. Re1 g4 41. Rh1 Rf3+ 42. Kc4 Kxe4 43. Rh7 Rf6 44. Rxa7 Rg6
45. a5 bxa5 46. Rxa5 g3 47. Ra1 Rg5 48. b4 cxb4 49. cxb4 g2 50. Rg1 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Carlin, Geoffrey"]
[Black "Vidinha, A"]
[Result "1-0"]
[ECO "E40"]
[EventDate "1978.09.10"]
[Opening "Nimzo-Indian: 4.e3"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bxc3+ 6. bxc3 Nbd7 7. a4 O-O
8. Nf3 Re8 9. Be2 c6 10. O-O Qc7 11. Ba3 e5 12. cxd5 Nxd5 13. Qb3 N7b6 14. Nxe5
Be6 15. c4 Nf6 16. Rac1 Ne4 17. Qc2 Nf6 18. Rfd1 Rad8 19. Nf3 Qc8 20. a5 Nbd7
21. Qa4 a6 22. d5 Bf5 23. Nd4 Nb8 24. Qb3 Bg6 25. Bf3 Be4 26. Bxe4 Nxe4 27. Bb2
Re5 28. Nf3 Rh5 29. dxc6 Rxd1+ 30. Rxd1 Nxc6 31. Qb6 Rxa5 32. Ne5 Rc5 33. Nxc6
1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Fesche, Svein Tore"]
[Black "Erős, Pál"]
[Result "1/2-1/2"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sveshnikov variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6
8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. exf5 Bxf5 12. c3 Bg7 13. Qf3 Be6 14. Bd3
O-O 15. g4 Bxd5 16. Qxd5 Ne7 17. Qe4 Ng6 18. Nc2 d5 19. Qf5 e4 20. Be2 Nh4
21. Qh5 Ng2+ 22. Kf1 Nf4 23. Qf5 Qc7 24. Rd1 Nxe2 25. Kxe2 Qc4+ 26. Ke1 Qxa2
27. Ne3 Qxb2 28. Nxd5 Rad8 29. Kf1 Rfe8 30. Kg2 e3 31. Nxe3 Qxc3 32. Nd5 Qe5
33. Qxe5 Bxe5 34. Rhe1 Kf8 35. f4 Bg7 36. Nc7 Bc3 37. Nxe8 Rxd1 38. Rxd1 Kxe8
39. Rd6 a5 40. Rd5 a4 41. Rxb5 a3 42. Rb8+ Kd7 43. Ra8 Bb2 44. Kf3 Kd6 45. Ke4
Kc5 46. Kd3 Kb4 47. Kc2 Kc4 48. Ra4+ Kd5 49. Ra7 f5 50. Rxh7 fxg4 51. Rh4 Bf6
52. Rh5+ Ke4 53. Ra5 Kxf4 54. Rxa3 Be5 55. Kd1 Ke4 56. Ra2 Kf3 57. Ke1 g3
1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Florián, Jaromír"]
[Black "Walisiak, Roman"]
[Result "1-0"]
[ECO "C41"]
[EventDate "1978.09.10"]
[Opening "Philidor's defence"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nc6 4. d4 exd4 5. Nxd4 g6 6. Nc3 Bg7 7. Be3 Nge7
8. Qd2 a6 9. O-O O-O 10. f4 Kh8 11. f5 gxf5 12. exf5 Ng8 13. f6 Bxf6 14. Rxf6
Nxf6 15. Bg5 h6 16. Bh4 Kg7 17. Rf1 Ne4 18. Qf4 Ng5 19. Nd5 f6 20. Bd3 Nxd4
21. Qxd4 c6 22. Nf4 c5 23. Qc3 Qe7 24. Ng6 Qf7 25. Nxf8 Qxf8 26. Bxg5 hxg5
27. h4 g4 28. h5 Bd7 29. h6+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Jennen, Herman"]
[Black "Krylov, Sergey"]
[Result "0-1"]
[ECO "A98"]
[EventDate "1978.09.10"]
[Opening "Dutch: Ilyin-Genevsky variation (with Qc2)"]
[Source "365chess.com"]

1. d4 e6 2. Nf3 f5 3. c4 Nf6 4. g3 Be7 5. Bg2 d6 6. Nc3 O-O 7. O-O Qe8 8. Qc2
Nh5 9. e4 f4 10. e5 dxe5 11. dxe5 fxg3 12. hxg3 Nc6 13. Be3 Bd7 14. Qe4 Nb4
15. Nd4 Bc5 16. Qxb7 Rb8 17. Qe4 Bxd4 18. Bxd4 Bc6 19. Qe2 Bxg2 20. Kxg2 Qg6
21. Qe4 Nf4+ 22. Kg1 Qxe4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Rudenskij, Nikolai"]
[Black "Wünsche, Klaus Peter"]
[Result "1-0"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Sveshnikov variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6
8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. exf5 Bxf5 12. c3 Bg7 13. Nc2 O-O 14. Nce3
Be6 15. Bd3 f5 16. O-O Ra7 17. f4 e4 18. Bc2 Kh8 19. Qh5 Ne7 20. Rad1 Nxd5
21. Nxd5 Qd7 22. Bb3 a5 23. Ne3 b4 24. Bxe6 Qxe6 25. c4 Bxb2 26. Rd5 a4 27. Rfd1
Ra6 28. Rb5 b3 29. Rb7 Bg7 30. a3 Qh6 31. Qe2 Qxf4 32. Rf1 Qg5 33. h4 Qf6
34. Nxf5 b2 35. Qxe4 Bh6 36. Ng3 Qg6 37. Qd4+ Kg8 38. Qd5+ Kh8 39. Qd4+ Kg8
40. Qd5+ Kh8 41. Rxf8+ Bxf8 42. Qd4+ Kg8 43. Qd5+ Kh8 44. Qd4+ Kg8 45. Ne4 Bg7
46. Qd5+ Kf8 47. Rb8+ Ke7 48. Qb7+ Ke6 49. Ng5+ Ke5 50. Qd5+ Kf4 51. Qf3+ Ke5
52. Qe3+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Schmeisser, André"]
[Black "Tonteri, Ari"]
[Result "0-1"]
[ECO "C68/12"]
[EventDate "1978.09.10"]
[Opening "Ruy Lopez: exchange (5...Qd6)"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Qd6 6. d4 exd4 7. Nxd4 Bd7
8. Be3 O-O-O 9. Qf3 Qg6 10. Nd2 h5 11. Nc4 f6 12. e5 Bg4 13. Qf4 Qf7 14. b3 g5
15. Qg3 Nh6 16. f3 Bd7 17. exf6 c5 18. Ne5 Qxf6 19. Bxg5 Qd6 20. Bxd8 Qxd4+
21. Kh1 Nf5 22. Qg5 Bh6 23. Qf6 Bg7 24. Qf7 Qxe5 25. Rad1 Rxd8 26. Rfe1 Qf6
27. Qxh5 Ng3+ 28. hxg3 Rh8 29. Qxh8+ Bxh8 30. Rd5 Qh6+ 31. Kg1 Bd4+ 32. Kf1 Qh1+
33. Ke2 Qxg2+ 34. Kd3 Qxf3+ 35. Kd2 Qxd5 36. Kc1 Qg5+ 37. Kb1 Qd2 38. Rf1 Bf5
39. Rc1 Qc3 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Slagle, James Robert"]
[Black "Free, Terry"]
[Result "1/2-1/2"]
[ECO "D11/11"]
[EventDate "1978.09.10"]
[Opening "QGD Slav: 4.e3"]
[Source "365chess.com"]

1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Bd3 O-O 7. O-O Nbd7 8. Qe2
Re8 9. Rd1 Nb6 10. b3 Bg4 11. h3 Bxf3 12. Qxf3 e5 13. dxe5 Rxe5 14. Bb2 Qe7
15. Na4 Re6 16. Nxb6 axb6 17. cxd5 Nxd5 18. Bxg7 Kxg7 19. Bc4 Rf6 20. Qg4 h5
21. Qd4 Nb4 22. Qb2 b5 23. Be2 Nd5 24. Qd4 Kg8 25. Bxb5 Nxe3 26. Qxe3 Qxe3
27. fxe3 cxb5 28. Rd5 Rb6 29. Kf2 b4 30. Rd4 Rba6 31. Rxb4 Rxa2+ 32. Rxa2 Rxa2+
33. Kf3 Ra7 34. Ke4 Kf8 35. g3 Ke7 36. Rb6 Kd7 37. b4 Kc8 38. Ke5 Ra1 39. Rf6
Rg1 40. Rf3 Rb1 41. Rxf7 Rxb4 42. Rg7 Rb6 43. e4 Ra6 44. Kd5 b5 45. Kc5 b4
46. Kxb4 Re6 47. Kc3 Rxe4 48. Rxg6 h4 49. Kd3 Ra4 50. Ke2 Ra2+ 51. Kf1 Ra1+
52. Kg2 Ra2+ 53. Kf3 Ra3+ 54. Kf4 Ra4+ 55. Ke5 Ra5+ 56. Kd4 Ra4+ 57. Kc5 Ra3
58. gxh4 Rxh3 59. Rg4 Kd7 60. Kd5 Ke7 61. Rf4 Rh1 62. Ke5 Re1+ 63. Kd4 Ke6
64. Rf8 Ke7 65. Rf3 Re6 66. h5 Rf6 67. Rg3 Rh6 68. Rg5 Kf6 69. Re5 Kg7 70. Ke4
Rf6 71. Rd5 Kh6 72. Ke5 Rf1 73. Ke6 Rf3 74. Re5 Rf1 75. Kd5 Rf3 76. Ke6 Rf1
77. Rf5 Rxf5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Svensson, Roger"]
[Black "Alon, Levi"]
[Result "0-1"]
[ECO "D88"]
[EventDate "1978.09.10"]
[Opening "Gruenfeld: Spassky variation, main line (10...cxd4 11.cxd4)"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5
8. Ne2 Nc6 9. Be3 O-O 10. O-O cxd4 11. cxd4 Bg4 12. f3 Na5 13. Bb5 Be6 14. Qa4
a6 15. Bd3 b5 16. Qb4 Nc6 17. Qb2 Qb6 18. Bf2 Rfd8 19. e5 Bd5 20. a4 b4 21. Rac1
Rac8 22. Rc5 e6 23. Rfc1 Bf8 24. R5c2 b3 25. Rd2 Nb4 26. Nf4 Na2 27. Rxc8 Rxc8
28. Nxd5 Rc1+ 29. Qxc1 exd5 30. Qb1 Nc3 31. Qb2 Nxa4 {White lost on time.} 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Vaccani, Mario"]
[Black "Hansen, Åge"]
[Result "1-0"]
[ECO "B59"]
[EventDate "1978.09.18"]
[Opening "Sicilian: Boleslavsky variation (7.Nb3)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 e5 6. Nb3 Nf6 7. Be2 Be7
8. Be3 O-O 9. O-O b6 10. f4 Bb7 11. Qe1 Nb4 12. fxe5 dxe5 13. Rd1 Qc8 14. Qg3
Re8 15. Bh6 g6 16. Qxe5 Bc5+ 17. Qxc5 bxc5 18. Rxf6 Bxe4 19. Nxe4 Rxe4 20. Bf3
Qe8 21. Bxe4 Qxe4 22. Rdf1 Qd5 23. Kh1 Rf8 24. Bxf8 Kxf8 25. Rxf7+ Qxf7
26. Rxf7+ Kxf7 27. Nxc5 Nxc2 28. Kg1 Nd4 29. Kf2 Kf6 30. b4 Nc2 31. Nd3 Kf5
32. Kf3 h5 33. a4 g5 34. h3 g4+ 35. hxg4+ hxg4+ 36. Kg3 Ne3 37. b5 Nd5 38. a5
Ke4 39. Nc5+ Kd4 40. Nd7 Ne7 41. b6 axb6 42. axb6 Nf5+ 43. Kxg4 Nd6 44. Kf4 Kd5
45. g4 Kc6 46. Ne5+ Kxb6 47. g5 Kc7 48. g6 Ne8 49. Kf5 Kd6 50. Nf3 Ke7 51. Ke5
Kf8 52. Nh4 Kg7 53. Ke6 Nc7+ 54. Kf5 Nd5 55. Kg5 Nc7 56. Nf5+ Kg8 57. Kf6 Ne6
58. Kxe6 Kf8 59. Kf6 Kg8 60. Ne7+ Kh8 61. g7+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Winkelmann, Max"]
[Black "Surjanto, Edy"]
[Result "1/2-1/2"]
[ECO "D06"]
[EventDate "1978.09.10"]
[Opening "QGD: Marshall defence"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 d5 3. Nf3 Bg4 4. Qb3 b6 5. Ne5 dxc4 6. Qxc4 Be6 7. Qa4+ Bd7
8. Nxd7 Qxd7 9. Qxd7+ Nbxd7 10. Nc3 e6 11. g3 Bb4 12. Bd2 Bxc3 13. Bxc3 O-O
14. Bg2 Rab8 15. O-O Nd5 16. Bd2 c5 17. e4 Ne7 18. dxc5 Nxc5 19. Bb4 Nc6
20. Bxc5 bxc5 21. b3 Nd4 22. Rfd1 e5 23. Bf1 Rfd8 24. Kg2 g6 25. Rac1 Rdc8
26. Rc3 Rb6 27. Rdc1 Rbc6 28. Bc4 Kg7 29. h4 h6 30. Bf1 g5 31. hxg5 hxg5 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.18"]
[Round "8"]
[White "Zeitler, Hans Jürgen"]
[Black "Atanasov, Venko"]
[Result "1/2-1/2"]
[ECO "B42"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Kan (5.Bd3)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. O-O Nf6 7. Qe2 d6 8. f4
Nbd7 9. c4 Be7 10. Nc3 O-O 11. Nf3 Rd8 12. e5 Ne8 13. Ne4 Nf8 14. Be3 b6
15. Rad1 Rb8 16. Bd4 d5 17. cxd5 exd5 18. Ng3 Bc5 19. Rc1 Bg4 20. Kh1 Qa7
21. Bxc5 bxc5 22. f5 c4 23. Bb1 Qb6 24. Qf2 Qxf2 25. Rxf2 Bxf3 26. gxf3 Rb5
27. Rg1 Rdb8 28. Rgg2 Kh8 29. f4 a5 30. Re2 a4 31. Bc2 Ra5 32. Bd1 Nd7 33. e6
fxe6 34. fxe6 Ndf6 35. Nf5 a3 36. b3 cxb3 37. Bxb3 Nh5 38. Rgf2 Rc5 39. Nd4 Nef6
40. Kg2 Ne4 41. Rf3 Nhf6 42. Rd3 g6 43. Kf3 Re8 44. f5 Kg7 45. h4 gxf5 46. Kf4
Kf8 47. Kxf5 Ke7 48. Rg2 Nd6+ 49. Kf4 Nh5+ 50. Ke3 Kf6 51. Rg5 Ng7 52. Rxd5 Rxd5
53. Bxd5 Ndf5+ 54. Nxf5 Kxf5 55. Be4+ Kxe6 56. Rxa3 Nf5+ 57. Kf4 Rf8 58. Ra6+
Nd6+ 59. Ke3 Rc8 60. Bxh7 Rh8 61. Ra7 Nc8 62. Rg7 Ne7 63. Be4 Rxh4 64. Rg5 Rh3+
65. Kd4 Ra3 66. Bb1 Kd6 67. Kc4 Nc6 68. Rd5+ Kc7 69. Rb5 Ra6 70. Kc5 Ra5
71. Rxa5 Nxa5 72. Bd3 Nb7+ 73. Kb5 Nd6+ 74. Ka6 Nb7 75. Bf1 Nc5+ 76. Kb5 Ne4
77. a3 Nd6+ 78. Ka6 Nb7 79. Bg2 Nd6 80. Bd5 Nc8 81. Bb3 Nb6 82. Be6 Kc6 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Alon, Levi"]
[Black "Free, Terry"]
[Result "1/2-1/2"]
[ECO "A05"]
[EventDate "1978.09.10"]
[Opening "Reti: King's Indian attack"]
[Source "365chess.com"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. Nc3 Nbd7 7. e4 c6 8. a3
a6 9. h3 Re8 10. Be3 Nf8 11. Nd2 e5 12. f4 exf4 13. gxf4 Nh5 14. f5 Qh4 15. Nf3
Qe7 16. fxg6 fxg6 17. Bg5 Qc7 18. Qd2 Ne6 19. Be3 Rf8 20. Nh2 Bd7 21. Ng4 Nef4
22. Bxf4 Nxf4 23. Rxf4 Rxf4 24. Qxf4 Qb6+ 25. Kh1 Qxb2 26. Rf1 Rf8 27. Nd1 Rxf4
28. Nxb2 Rxf1+ 29. Bxf1 Bxb2 30. Kg2 Kg7 31. a4 Bc3 32. Ne3 Be6 33. Kf3 Kf6
34. Ng4+ Kg7 35. Kf4 h5 36. Ne3 Kf6 37. Nd1 g5+ 38. Ke3 Ba5 39. d4 Bd7 40. Nb2
Bc7 41. Bg2 g4 42. hxg4 Bxg4 43. Nd3 Bd7 44. Kf4 b5 45. axb5 cxb5 46. Nb4 Ba5
47. e5+ dxe5+ 48. dxe5+ Kg7 49. Nxa6 h4 50. Nc5 Bd2+ 51. Kf3 Bc6+ 52. Ne4 Bg5
53. Kg4 Be7 54. Kf5 b4 55. Bf3 Ba4 56. Bd1 h3 57. Kf4 h2 58. Ng3 Kg6 59. Nh1
Bg5+ 60. Kg3 Bc6 61. Kxh2 Bf4+ 62. Kg1 Bxe5 63. Nf2 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Baretić, Dragoljub"]
[Black "Florián, Jaromír"]
[Result "1-0"]
[ECO "C62"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Ruy Lopez: old Steinitz defence"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 Nge7 6. Be3 Ng6 7. Qd2 Be7 8. d5
Nb8 9. Bd3 O-O 10. h4 h5 11. Ng5 Na6 12. Be2 Bg4 13. f3 Bd7 14. g3 Qc8 15. f4
exf4 16. gxf4 Bg4 17. O-O-O f5 18. exf5 Bxf5 19. Bxh5 Bxg5 20. hxg5 Nb4 21. a3
Nxc2 22. Bf2 Qd7 23. Be2 Na1 24. Bc4 b5 25. Ba2 a5 26. Rde1 b4 27. Ne4 bxa3
28. Bd4 Nc2 29. Qxc2 Rfe8 30. bxa3 Rab8 31. Bc4 Qf7 32. Nf6+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Boerefijn, Martinus"]
[Black "Burdio Gracía, Delfín"]
[Result "0-1"]
[ECO "B10"]
[EventDate "1978.09.10"]
[Opening "Caro-Kann: closed (Breyer) variation"]
[Source "365chess.com"]

1. e4 c6 2. d3 g6 3. g3 Bg7 4. Bg2 d5 5. Nd2 dxe4 6. dxe4 Nf6 7. Ngf3 O-O
8. O-O Qc7 9. Qe2 Nbd7 10. e5 Ng4 11. e6 Nde5 12. Nxe5 Nxe5 13. f4 Bxe6 14. fxe5
Bxe5 15. Kh1 Rad8 16. Nf3 Bg7 17. Re1 Qa5 18. Bd2 Qc5 19. Be3 Qa5 20. c3 Bd5
21. Qf2 b6 22. Nd4 Bxd4 23. cxd4 Rfe8 24. Rf1 h5 25. Bxd5 Qxd5+ 26. Qf3 e5
27. dxe5 Rxe5 28. Kg2 Rxe3 29. Qxd5 Rxd5 30. Rf2 Red3 31. Raf1 Rd2 32. Kh3 Rxf2
33. Rxf2 Kg7 34. Kh4 Rd4+ 35. Kh3 f6 36. Re2 g5 37. Re7+ Kg6 38. Re2 c5 39. Kg2
Kf5 40. Kf3 h4 41. Kg2 hxg3 42. hxg3 Kg4 43. Rc2 f5 44. b3 Rd3 45. Rc4+ f4
46. gxf4 gxf4 47. Rc2 Rg3+ 48. Kf2 Rh3 49. Kg1 f3 50. Rc4+ Kg3 51. Rc2 f2+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Erős, Pál"]
[Black "Rudenskij, Nikolai"]
[Result "0-1"]
[ECO "E41"]
[EventDate "1978.09.10"]
[Opening "Nimzo-Indian: 4.e3 c5"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Ne2 b6 7. O-O O-O 8. f4
cxd4 9. exd4 d5 10. a3 Be7 11. b4 dxc4 12. Bxc4 Nd5 13. Nxd5 exd5 14. Bb5 Bb7
15. f5 Bf6 16. Bf4 Re8 17. Bxc6 Bxc6 18. Ng3 Bb5 19. Rf2 g6 20. Qd2 Rc8 21. fxg6
hxg6 22. h3 Rc4 23. Be5 Rxe5 24. dxe5 Bxe5 25. Raf1 Bd4 26. Kh1 Bxf2 27. Qxf2
Qc7 28. Qf6 Rc6 29. Qf4 Bxf1 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Hansen, Åge"]
[Black "Carlin, Geoffrey"]
[Result "0-1"]
[ECO "C07"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, open variation"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. exd5 exd5 6. dxc5 Bxc5 7. Ngf3 Nf6
8. Be2 O-O 9. O-O Re8 10. Re1 Bg4 11. h3 Bh5 12. b4 Bb6 13. Bb2 Qd6 14. Nc4
Bxf2+ 15. Kxf2 Ne4+ 16. Kg1 dxc4 17. Bxc4 Qg3 18. Qd5 Qf2+ 19. Kh2 Qg3+ 20. Kg1
Qf2+ 21. Kh2 Bg6 22. Re2 Qg3+ 23. Kg1 Rad8 24. Qb5 Re7 25. Rae1 Rde8 26. Bd5 Qc7
27. Qc4 Qb6+ 28. Kh2 Qc7+ 29. Kg1 Qb6+ 30. Kh2 Nd6 31. Rxe7 Rxe7 32. Rxe7 Nxe7
33. Qb3 Nxd5 34. Qxd5 Be4 35. Qd1 h6 36. a4 Nf5 37. Qe2 Qc7+ 38. Kg1 Qf4 39. Qf1
a6 40. Bc1 Qd6 41. Qe2 Ng3 42. Qe1 Bxf3 43. gxf3 Qg6 44. Kh2 Nf5 45. Bf4 Nd6
46. Bxd6 Qxd6+ 47. Kg2 Qg6+ 48. Kh1 Qc6 49. Qe4 Qxa4 50. Qxb7 Qa1+ 51. Kg2 Qxc3
52. Qxa6 Qxb4 53. Qc8+ Kh7 54. Qf5+ Kg8 55. Qc8+ Qf8 56. Qg4 Qd8 57. Qe4 Qg5+
58. Kf2 f5 59. Qc4+ Kh7 60. h4 Qd2+ 61. Kg3 Qe1+ 62. Kg2 Qe5 63. f4 Qe4+
64. Qxe4 fxe4 65. h5 g5 66. Kg3 Kg7 67. Kh3 gxf4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Jennen, Herman"]
[Black "Fesche, Svein Tore"]
[Result "0-1"]
[ECO "A40"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn: Keres defence"]
[Source "365chess.com"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. g3 f5 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 Nf6
8. O-O O-O 9. e3 Qe8 10. Rc1 d6 11. c5 Bd5 12. cxd6 cxd6 13. Rc3 Nc6 14. Qe2 Rc8
15. Rfc1 Qd7 16. a3 Ne7 17. Nb1 Ne4 18. Rxc8 Rxc8 19. Rxc8+ Qxc8 20. Qd1 Qc6
21. Nfd2 Nxf2 22. Bxd5 Nxd1 23. Bxc6 Nxc6 24. e4 Nxd4 25. exf5 Nxf5 26. b4 d5
27. Nf3 Nfe3 28. Nd4 e5 29. Nc6 e4 30. Nxa7 d4 31. Nb5 Nc2 32. Kf1 d3 33. Nd2 e3
34. Nf3 e2+ 35. Kg1 d2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Krylov, Sergey"]
[Black "Wünsche, Klaus Peter"]
[Result "1-0"]
[ECO "B31"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Nimzovich-Rossolimo attack (with...g6, without...d6)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 Nf6 6. h3 O-O 7. e5 Nd5 8. Bxc6
dxc6 9. d3 Nc7 10. Nc3 Ne6 11. a4 a5 12. Be3 Nd4 13. Bxd4 cxd4 14. Ne4 Qc7
15. Ng3 c5 16. Qe2 b6 17. Nf1 Bf5 18. b3 Rad8 19. N1d2 Bh6 20. Nc4 Rb8 21. Nh2
Bg7 22. Nf1 Qd7 23. Ng3 Be6 24. f4 Bh6 25. Rf1 Bxc4 26. dxc4 f5 27. Rad1 Qc7
28. Rd3 Rbd8 29. Qf3 Rd7 30. h4 e6 31. Ne2 Rfd8 32. Rfd1 Bf8 33. Qg3 Kg7 34. h5
Be7 35. Kf2 Qc8 36. Rh1 Rh8 37. Qh2 Rdd8 38. Rh3 g5 39. fxg5 Bxg5 40. Rg3 h6
41. Nf4 Kh7 42. Ng6 Rhe8 43. Rf3 Be3+ 44. Ke2 Qb7 45. Qh4 Rd7 46. Rd1 Bg5
47. Qg3 Qe4+ 48. Kf1 Rf7 49. Rfd3 Be3 50. Qf3 Qxf3+ 51. gxf3 f4 52. Ke2 Rf5
53. Rh1 Rg5 54. Rdd1 Kg7 55. Rh2 Rc8 56. Kd3 Rc7 57. Rdh1 Rf7 58. Ke4 Rff5
59. Rh4 Kf7 60. R1h2 Ke8 61. Kd3 Bc1 62. Rh1 Be3 63. Ke4 Rg2 64. R1h3 Rgg5
65. Rg4 Rxh5 66. Rgh4 Rxh4 67. Rxh4 h5 68. Rh2 Rg5 69. Nxf4 Bxf4 70. Kxf4 Rg7
71. Rxh5 Rg2 72. Rh8+ Ke7 73. Rh7+ Ke8 74. Rb7 Rxc2 75. Rxb6 Ke7 76. Rb7+ Kd8
77. Rb6 Ke7 78. Rc6 Rc3 79. Rxc5 Rxb3 80. Rxa5 Rc3 81. c5 d3 82. Ra7+ Kd8
83. Ra6 Ke7 84. c6 Kd8 85. Ke3 d2+ 86. Kxd2 Rxf3 87. Ra7 Rf5 88. Rd7+ Kc8 89. a5
Rxe5 90. a6 Rc5 91. a7 Rxc6 92. a8=Q+ Kxd7 93. Kd3 Rd6+ 94. Ke4 Rd5 95. Qb7+ Ke8
96. Qc7 Rf5 97. Qd6 Kf7 98. Qd7+ Kf6 99. Qe8 Re5+ 100. Kd4 Rd5+ 101. Kc4 Ke5
102. Qf8 Ke4 103. Qf6 Re5 104. Qf7 Ke3 105. Qf1 Ke4 106. Qf6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Slagle, James Robert"]
[Black "Svensson, Roger"]
[Result "1/2-1/2"]
[ECO "E81"]
[EventDate "1978.09.10"]
[Opening "King's Indian: Saemisch (6...Na6)"]
[Source "365chess.com"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 Na6 7. Bd3 c5 8. d5 Nc7
9. Nge2 a6 10. Qd2 Bd7 11. g4 b5 12. Ng3 bxc4 13. Bxc4 Nb5 14. Nce2 a5 15. a4
Nc7 16. h4 Bc8 17. h5 Nd7 18. Rc1 Ne5 19. Kf2 Nxc4 20. Rxc4 Ba6 21. Rc2 Bxe2
22. Kxe2 e5 23. Bh6 Bxh6 24. Qxh6 Qe7 25. Ke1 Ra7 26. Rch2 Ne8 27. Ne2 Rd7
28. Ng1 g5 29. Ne2 f6 30. Ng3 Qg7 31. Nf5 Qxh6 32. Nxh6+ Kg7 33. Nf5+ Kf7
34. Ne3 Ra7 35. Rc2 Nc7 36. Nc4 Ke7 37. Kd2 Rb8 38. Kc3 Na8 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Surjanto, Edy"]
[Black "Atanasov, Venko"]
[Result "0-1"]
[ECO "B41"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Kan variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. f4 d6 6. Bd3 Nf6 7. O-O Nbd7 8. Kh1
Be7 9. Nc3 Qc7 10. Qe2 O-O 11. Bd2 b5 12. Rae1 Nc5 13. e5 Ne8 14. Rf3 Nxd3
15. Qxd3 Qc4 16. Qxc4 bxc4 17. Nc6 Bh4 18. Re2 Bb7 19. Rh3 Bxc6 20. Rxh4 d5
21. Nd1 Nc7 22. Nf2 Rfb8 23. Bc1 a5 24. Re3 Ne8 25. Kg1 g6 26. Reh3 h5 27. g4
Ng7 28. gxh5 Nxh5 29. Ng4 Kg7 30. Nf2 Kf8 31. Ng4 Ke7 32. Nf2 a4 33. Ra3 Ng7
34. Rhh3 Nf5 35. b3 Nd4 36. Be3 Nxc2 37. Bc5+ Kd8 38. Rh8+ Kd7 39. Rh7 Nxa3
40. Rxf7+ Kc8 41. Bd6 axb3 42. axb3 Nb5 43. Bxb8 Kxb8 44. Rf8+ Kb7 45. Rxa8 Kxa8
46. bxc4 dxc4 47. Kf1 Bf3 48. Ke1 Kb7 49. Kd2 Kc6 50. Nh3 Bg4 51. Nf2 Bf5 52. h4
c3+ 53. Kc1 Nd4 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Tiefenbacher, Richard"]
[Black "Vaccani, Mario"]
[Result "1-0"]
[ECO "B76"]
[EventDate "1978.09.10"]
[Opening "Sicilian: dragon, Yugoslav attack (7...O-O)"]
[Source "365chess.com"]

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. h4 Rc8 11. Bb3 Ne5 12. O-O-O Nc4 13. Bxc4 Rxc4 14. h5 Qc7
15. hxg6 fxg6 16. Nde2 Rc8 17. Bg5 Nxe4 18. fxe4 Bg4 19. Kb1 Rxc3 20. Nxc3 Qb6
21. Qd5+ Kh8 22. Qb3 Qa5 23. Rd5 Qc7 24. Rd3 b5 25. Nd5 Qb7 26. Nxe7 Qxe4
27. Re3 Qc4 28. Nxg6+ Kg8 29. Ne7+ Kf7 30. Rf1+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Tonteri, Ari"]
[Black "Zeitler, Hans Jürgen"]
[Result "0-1"]
[ECO "B09"]
[EventDate "1978.09.10"]
[Opening "Pirc: Austrian attack"]
[Source "365chess.com"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 O-O 6. Be2 c5 7. dxc5 Qa5 8. O-O
Qxc5+ 9. Kh1 Nc6 10. Nd2 a5 11. Nb3 Qb6 12. a4 Nb4 13. Bf3 Be6 14. Nd4 Bc4
15. Re1 Ng4 16. Bxg4 Qxd4 17. Bd2 f5 18. exf5 gxf5 19. Bf3 e5 20. Qc1 e4 21. Be3
Qf6 22. Be2 Qe6 23. Ra3 Bxe2 24. Rxe2 Qc4 25. Rd2 d5 26. Qd1 Rfd8 27. Nb5 Bxb2
28. Rb3 Bf6 29. Nd4 Qc8 30. Qh5 Bxd4 31. Bxd4 Ra6 32. Rg3+ Rg6 33. Rxg6+ hxg6
34. Qxg6+ Kf8 35. Bg7+ Ke7 36. Bf6+ Kd7 37. Bxd8 Kxd8 38. Qg8+ Kc7 39. Qxc8+
Kxc8 40. Rd4 e3 41. Kg1 e2 42. Kf2 Nxc2 43. Rc4+ dxc4 44. Kxe2 b5 45. Kd2 Nd4
46. axb5 a4 47. Kc3 a3 48. h3 Nxb5+ 49. Kc2 Nd4+ 50. Kb1 c3 51. g4 c2+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Vidinha, António"]
[Black "Walisiak, Roman"]
[Result "0-1"]
[ECO "B33"]
[EventDate "1978.09.10"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Qb6 7. Nxc6 dxc6
8. Bb3 Bg7 9. O-O O-O 10. Be3 Qc7 11. h3 b5 12. a3 Bb7 13. Qe2 a6 14. Bc5 Rfe8
15. Rfd1 Nd7 16. Bd4 Bf8 17. Qg4 e6 18. f4 c5 19. Bf2 Nf6 20. Qf3 b4 21. axb4
cxb4 22. Ne2 Nxe4 23. Rd4 Nxf2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.19"]
[Round "9"]
[White "Winkelmann, Max"]
[Black "Schmeisser, André"]
[Result "0-1"]
[ECO "A96"]
[EventDate "1978.09.10"]
[Opening "Dutch: classical variation"]
[Source "365chess.com"]

1. d4 f5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 a5 8. b3 Qe8
9. e3 Na6 10. Bb2 Qh5 11. Ne1 c6 12. Qxh5 Nxh5 13. Nf3 Bd7 14. Rad1 d5 15. Ne5
Nf6 16. Rfe1 Bd6 17. Nxd7 Nxd7 18. Bf1 Nf6 19. a3 Ne4 20. Kg2 Nxc3 21. Bxc3 Bxa3
22. Bxa5 Bb4 23. Bxb4 Nxb4 24. Re2 Ra3 25. Rb2 Rfa8 26. Rdb1 Ra2 27. Be2 R8a3
28. h3 Kf7 29. Kf1 Kf6 30. Ke1 g5 31. Kd1 Ra1 32. Rxa1 Rxa1+ 33. Kd2 b6 34. Kc3
c5 35. cxd5 exd5 36. Bf3 Ke6 37. dxc5 bxc5 38. Rd2 Ke5 39. Bg2 h5 40. f4+ gxf4
41. gxf4+ Kd6 42. Bf3 h4 43. Rg2 Rc1+ 44. Kd2 Rc2+ 45. Ke1 Rc3 46. Kd2 d4
47. Re2 Rxb3 48. Bh5 Rd3+ 49. Ke1 Rxe3 50. Rxe3 dxe3 51. Ke2 Nd5 52. Bf3 Nxf4+
53. Kxe3 Ke5 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Alon, Levi"]
[Black "Winkelmann, Max"]
[Result "1/2-1/2"]
[ECO "A08/05"]
[EventDate "1978.09.10"]
[Opening "Neo-Sicilian: King's Indian attack, phantom line"]
[Source "365chess.com"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. c3 dxe4 6. dxe4 Nf6 7. Qc2 Qc7 8. a4
Be7 9. Bd3 h6 10. O-O O-O 11. Nc4 e5 12. h3 Be6 13. Ne3 Rad8 14. Bc4 Bxc4
15. Nxc4 Rd7 16. Be3 Rfd8 17. a5 Ne8 18. Qb3 Nf6 19. Nfd2 Rb8 20. f4 Bd6
21. Nxd6 Qxd6 22. Nc4 Qe6 23. f5 Qe7 24. Qc2 Rc8 25. g4 Nh7 26. Qf2 Nb8 27. Qg3
f6 28. h4 Na6 29. Rfd1 Rcd8 30. b3 Nf8 31. Kf1 Qf7 32. Ke2 Nc7 33. Rxd7 Rxd7
34. Rd1 Nb5 35. Rxd7 Nxd7 36. Kd2 Kh8 37. Bf2 b6 38. axb6 axb6 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Atanasov, Venko"]
[Black "Rudenskij, Nikolai"]
[Result "1-0"]
[ECO "A28"]
[EventDate "1978.09.10"]
[Opening "English: Nenarokov variation"]
[Source "365chess.com"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Bg5 h6 7. Bh4 Bxc3+
8. bxc3 Ne5 9. f4 Ng6 10. Bxf6 Qxf6 11. g3 O-O 12. e4 d6 13. Qd3 a5 14. Bg2 a4
15. a3 Ra5 16. Rb1 Qe7 17. O-O d5 18. exd5 Qxa3 19. Rb4 c5 20. dxc6 bxc6
21. Bxc6 Rd8 22. Be4 Bh3 23. Rfb1 Qa2 24. Qd1 Qa3 25. Qe1 Re8 26. Nc2 Rxe4
27. Nxa3 Rxe1+ 28. Rxe1 Bd7 29. Ra1 Rc5 30. Nb5 Ne7 31. Raxa4 Nc6 32. Rb1 g5
33. fxg5 hxg5 34. Nd6 Ne5 35. Ne4 Nf3+ 36. Kg2 Rf5 37. Ra6 Be6 38. Rb5 Ne1+
39. Kg1 Rf3 40. Nxg5 Bxc4 41. Nxf3 Nxf3+ 42. Kf2 Bxb5 43. Rb6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Burdio Gracía, Delfín"]
[Black "Zeitler, Hans Jürgen"]
[Result "1-0"]
[ECO "A48"]
[EventDate "1978.09.10"]
[Opening "King's Indian: East Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 d6 5. Nbd2 Nbd7 6. e3 O-O 7. Be2 e5 8. O-O
h6 9. dxe5 dxe5 10. Bh4 Qe8 11. Qc2 Nd5 12. Bc4 N7b6 13. Bb3 Kh8 14. Rad1 Qc6
15. Bg3 Qe8 16. Bxd5 Nxd5 17. Qe4 Nf6 18. Qxe5 Qa4 19. Qxc7 Qxa2 20. Be5 Nd5
21. Qc5 f6 22. Bd6 Rd8 23. Ra1 Qxb2 24. Qxd5 Bf8 25. Qf7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Carlin, Geoffrey"]
[Black "Boerefijn, Martinus"]
[Result "0-1"]
[ECO "D06/05"]
[EventDate "1978.09.10"]
[Opening "QGD: Grau (3.Nf3)"]
[Source "365chess.com"]

1. d4 d5 2. c4 Bf5 3. Nf3 e6 4. e3 c6 5. Qb3 Qb6 6. Qxb6 axb6 7. Nc3 Nf6 8. Bd2
Nbd7 9. Nh4 Bg6 10. Nxg6 hxg6 11. f3 Nh5 12. Kf2 Bd6 13. Bd3 Nhf6 14. g3 dxc4
15. Bxc4 b5 16. Bd3 Nb6 17. e4 Be7 18. b3 Ba3 19. Rab1 Bb4 20. Rb2 Ba3 21. Rc2
Be7 22. Kg2 Rd8 23. Be3 Na8 24. Rd1 Nc7 25. Bf1 O-O 26. Bf4 Na6 27. Rcd2 Bb4
28. Rd3 Ra8 29. Bc1 Bxc3 30. Rxc3 Nb4 31. a3 Na2 32. Rcd3 Nxc1 33. Rxc1 Rxa3
34. Rdc3 Rd8 35. Rd1 Ra2+ 36. Kh3 Rb2 37. g4 g5 38. Kg3 Ra8 39. Re3 Ra3 40. Rdd3
Ra1 41. Re2 Rbb1 42. Bg2 Ra3 43. Ree3 Ra2 44. h4 gxh4+ 45. Kxh4 Rxg2 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Fesche, Svein Tore"]
[Black "Baretić, Dragoljub"]
[Result "0-1"]
[ECO "E70"]
[EventDate "1978.09.10"]
[BlackElo "2305"]
[Opening "King's Indian: Kramer system"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nge2 O-O 6. Ng3 c6 7. Be2 Nbd7 8. Be3
e5 9. d5 cxd5 10. cxd5 Nb6 11. h4 h6 12. a4 Nbd7 13. h5 g5 14. Nf5 Nc5 15. Nxg7
Kxg7 16. f3 Qa5 17. Bd2 Qd8 18. b4 Na6 19. Bxa6 bxa6 20. g4 Bd7 21. Be3 Qc8
22. Qd3 Qb7 23. Rb1 Rfc8 24. O-O Rc7 25. Qd2 Qc8 26. Rfc1 Bxg4 27. Bxg5 Ng8
28. Be3 Bxf3 29. Kf2 Bxh5 30. Rg1+ Kh7 31. Rxg8 Kxg8 32. Bxh6 Rxc3 33. Qg5+ Bg6
34. Qf6 Rc2+ 35. Kg1 Qg4+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Florián, Jaromír"]
[Black "Erős, Pál"]
[Result "0-1"]
[ECO "B00"]
[EventDate "1978.09.10"]
[Opening "King's pawn opening"]
[Source "365chess.com"]

1. e4 d6 2. f4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bc4 O-O 6. d3 Nc6 7. a3 e5 8. fxe5
dxe5 9. Be3 Nd4 10. Qd2 Be6 11. Bxe6 Nxe6 12. O-O-O Ng4 13. Kb1 Nxe3 14. Qxe3 a5
15. h4 Rb8 16. h5 b5 17. Ne2 c5 18. Nd2 a4 19. hxg6 hxg6 20. Qh3 Re8 21. Rdf1
Kf8 22. Qh7 Nf4 23. Nc3 b4 24. Nxa4 bxa3 25. b3 Qa5 26. Nc4 Qxa4 27. Ka2 Qb4
28. g3 Qc3 29. Rh2 Rb4 30. gxf4 Rxc4 31. Rb1 Qxc2+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Free, Terry"]
[Black "Hansen, Åge"]
[Result "1-0"]
[ECO "B59"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Boleslavsky variation (7.Nb3)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 e5 6. Nb3 Nf6 7. Be2 Be7
8. Be3 O-O 9. h3 b6 10. Bf3 Bb7 11. O-O Rc8 12. Qe2 Qd7 13. a4 Nb4 14. Rfd1 d5
15. exd5 Bxd5 16. Bxd5 Nfxd5 17. Nxd5 Rxc2 18. Nxe7+ Qxe7 19. Rd2 Rfc8 20. Rad1
h6 21. Qf3 e4 22. Qg4 Kh7 23. Nd4 Rxd2 24. Bxd2 Nd3 25. Qxc8 g6 26. Bc3 Qg5
27. Ne6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Krylov, Sergey"]
[Black "Tiefenbacher, Richard"]
[Result "1-0"]
[ECO "A04/11"]
[EventDate "1978.09.10"]
[Opening "Neo-closed Sicilian: King's Indian attack"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 e6 6. O-O Nge7 7. Re1 O-O 8. c3
d6 9. d4 cxd4 10. cxd4 Qb6 11. d5 exd5 12. exd5 Ne5 13. Nxe5 Bxe5 14. Nd2 Qc7
15. Ne4 Bf5 16. Bh6 Rfe8 17. Qd2 Bxe4 18. Bxe4 Qd7 19. Rac1 Rac8 20. b3 Nf5
21. Bf4 Bxf4 22. Qxf4 Ng7 23. Rxc8 Rxc8 24. Bd3 a6 25. Kg2 Re8 26. Rc1 Re5
27. Qc4 Ne8 28. a4 Kg7 29. h3 Nf6 30. Qc7 Rxd5 31. Qxd7 Nxd7 32. Be4 Rc5 33. Rd1
Rc3 34. Rxd6 Rc7 35. Bd5 Nf6 36. Bf3 Nd7 37. g4 Kf8 38. Rd4 b6 39. g5 Nc5
40. Rb4 Nd7 41. Bg4 a5 42. Rb5 Nc5 43. Rxb6 Rb7 44. Rxb7 Nxb7 45. Bf3 Nc5
46. Bd5 Kg7 47. Kf3 f6 48. Ke3 fxg5 49. Kd4 Nd7 50. Bc6 Nb8 51. Bb5 g4 52. hxg4
Kf6 53. Kc5 h5 54. gxh5 gxh5 55. Kb6 Ke7 56. Kc7 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Schmeisser, André"]
[Black "Jennen, Herman"]
[Result "1/2-1/2"]
[ECO "A02"]
[EventDate "1978.09.10"]
[Opening "Bird: From gambit"]
[Source "365chess.com"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Bg4 5. e4 Nc6 6. Bb5 Ne7 7. d4 O-O
8. O-O Bxf3 9. Rxf3 Nxd4 10. Rh3 Nxb5 11. Qh5 f6 12. Qxh7+ Kf7 13. Qh5+ Ng6
14. Qd5+ Ke8 15. Qxb5+ c6 16. Qh5 Bc5+ 17. Be3 Bxe3+ 18. Rxe3 Qd4 19. Qxg6+ Rf7
20. Kf2 Qxb2 21. Rb3 Qxa1 22. Rxb7 Qxa2 23. Qh5 Qxc2+ 24. Ke3 Qc1+ 25. Kf2 Qf4+
26. Kg1 Qc1+ 27. Kf2 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Svensson, Roger"]
[Black "Vaccani, Mario"]
[Result "1-0"]
[ECO "A15"]
[EventDate "1978.09.10"]
[Opening "English opening"]
[Source "365chess.com"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 c5 5. d4 d6 6. dxc5 Qa5+ 7. Nbd2 Qxc5
8. e3 Nc6 9. g3 Bf5 10. Bg2 Bd3 11. Nd4 Nb4 12. a3 Nc6 13. Nxc6 bxc6 14. Bd4 Qa5
15. Bxc6+ Kf8 16. Bxa8 e5 17. Bb2 Nd7 18. Bg2 Bf6 19. b4 Qc7 20. Rc1 Kg7 21. Ne4
Bxe4 22. Bxe4 Rb8 23. O-O h5 24. Qd2 a5 25. Rfd1 Be7 26. c5 d5 27. Qxd5 Nf6
28. Qxe5 Qa7 29. Qd5 Kf8 30. Bxf6 Bxf6 31. Qc6 axb4 32. Qxf6 bxa3 33. Rd8+ Rxd8
34. Qxd8+ Kg7 35. Qb6 Qa4 36. Qb1 a2 37. Qa1+ Kh7 38. Bd5 Qa3 39. Bxa2 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Vidinha, António"]
[Black "Surjanto, Edy"]
[Result "0-1"]
[ECO "B01"]
[EventDate "1978.09.10"]
[Opening "Scandinavian (centre counter) defence"]
[Source "365chess.com"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 e6
8. O-O Nf6 9. Bd2 Qc7 10. Ne2 Be7 11. c3 O-O 12. Qc2 Nbd7 13. Bf4 Bd6 14. Bxd6
Qxd6 15. Rfe1 Nd5 16. Bxd5 cxd5 17. Ng3 g6 18. Qd2 Rfc8 19. Rf1 a5 20. Ne2 Nf6
21. Qf4 Qxf4 22. Nxf4 a4 23. a3 Ne4 24. Rac1 Ra6 25. Ne2 Rb6 26. Rc2 Nd6 27. Nc1
Nc4 28. Nd3 Na5 29. Nc5 Nb3 30. Nxa4 Ra6 31. Nc5 Nxc5 32. dxc5 Rxc5 33. Rd1 Rb5
34. Rdd2 Rxa3 35. g3 Rab3 36. Kg2 e5 37. Kf3 f5 38. Ke3 d4+ 39. Kd3 R5b4 40. Ke2
dxc3 41. bxc3 Re4+ 42. Kf3 Rd4 43. Ke3 Rxd2 44. Kxd2 b5 45. Kd3 b4 46. Kc4 Rxc3+
47. Rxc3 bxc3 48. Kxc3 Kf7 49. Kd3 Ke6 50. f3 Kd5 51. h4 f4 52. g4 h6 53. Ke2 e4
54. fxe4+ Kxe4 55. Kf2 f3 56. h5 g5 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Walisiak, Roman"]
[Black "Slagle, James Robert"]
[Result "1-0"]
[ECO "C17"]
[EventDate "1978.09.10"]
[Opening "Queen's pawn: French, Winawer, advance (5.a3)"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. Qg4 Ne7 7. b4 cxd4 8. Nb5
Bc7 9. Nf3 Nbc6 10. Bf4 Ng6 11. Bd3 O-O 12. Qh5 f6 13. Nxc7 Qxc7 14. Bg3 Qf7
15. O-O Bd7 16. b5 Na5 17. Nxd4 Rfc8 18. exf6 gxf6 19. f4 Ne7 20. Qg4+ Kh8
21. Rae1 Nc4 22. Nxe6 Nxa3 23. Ng5 fxg5 24. Qxd7 Re8 25. fxg5 Qh5 26. Be5+ Kg8
27. Qe6+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.20"]
[Round "10"]
[White "Wünsche, Klaus Peter"]
[Black "Tonteri, Ari"]
[Result "1-0"]
[ECO "D58"]
[EventDate "1978.09.10"]
[Opening "QGD: Tartakower (Makagonov-Bondarevsky) system"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 b6 8. Rc1
Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. b4 Qe7 12. Qb3 Rd8 13. Be2 c6 14. O-O Nd7
15. b5 Nf8 16. bxc6 Bxc6 17. Ba6 Bb7 18. Qa4 Rac8 19. Nb5 Ne6 20. Bxb7 Qxb7
21. Qxa7 Qxa7 22. Nxa7 Ra8 23. Nc6 Rd7 24. Rc2 Nd8 25. Nxd8 Bxd8 26. Ne5 Rda7
27. Nc6 Ra4 28. Rb1 Bf6 29. Rxb6 Rxa2 30. Rxa2 Rxa2 31. g3 Ra1+ 32. Kg2 Bg5
33. h4 Bf6 34. Rb5 Ra6 35. Nb4 Rd6 36. Nxd5 Bd8 37. Nf4 Kf8 38. Rd5 Rxd5
39. Nxd5 Ke8 40. h5 Kd7 41. f3 Kd6 42. e4 Bg5 43. f4 Bd8 44. g4 Bh4 45. Kf3 Be1
46. Ne3 Bc3 47. e5+ Kd7 48. Ke4 Bd2 49. Nf5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Atanasov, Venko"]
[Black "Krylov, Sergey"]
[Result "0-1"]
[ECO "A27"]
[EventDate "1978.09.10"]
[Opening "English: three knights system"]
[Source "365chess.com"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. d4 e4 5. Nd2 Nf6 6. e3 Be7 7. Be2 O-O 8. O-O
Bb4 9. Qc2 d6 10. f3 Bxc3 11. Qxc3 Re8 12. f4 a5 13. b3 d5 14. a3 Be6 15. Bb2
Bf7 16. b4 axb4 17. axb4 Rxa1 18. Rxa1 dxc4 19. Bxc4 Bxc4 20. Qxc4+ Qd5 21. b5
Qxc4 22. Nxc4 Nb4 23. Ra7 Rb8 24. Bc3 Nbd5 25. Bd2 Kf7 26. h3 Ke6 27. Na5 b6
28. Nc6 Rc8 29. Ra2 Ne8 30. Ne5 Nd6 31. Rb2 Ra8 32. Kf2 Ra4 33. Ke2 g6 34. Kd1
Ra3 35. Ke2 Ra1 36. Kf2 Ra4 37. Ke2 Nc4 38. Nxc4 Rxc4 39. Ra2 Nf6 40. Kd1 Ne8
41. Ra8 Nd6 42. g4 Kf7 43. Rd8 h5 44. Rd7+ Ke6 45. Rg7 Kf6 46. Rh7 fxg4 47. hxg4
hxg4 48. Be1 Nf5 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Baretić, Dragoljub"]
[Black "Burdio Gracía, Delfín"]
[Result "0-1"]
[ECO "B30"]
[EventDate "1978.09.10"]
[WhiteElo "2305"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 Nc6 3. d3 d6 4. Nbd2 Nf6 5. g3 e6 6. Bg2 Be7 7. O-O O-O 8. Re1
Qc7 9. Nf1 Rb8 10. Nh4 b5 11. f4 a5 12. c3 Bb7 13. Nf3 b4 14. Ne3 Rbd8 15. f5
Bc8 16. g4 Ne5 17. g5 Nxf3+ 18. Qxf3 Nd7 19. Qg3 Rfe8 20. Ng4 Bf8 21. fxe6 Rxe6
22. Rf1 Ne5 23. Ne3 Nxd3 24. Nd5 Nxc1 25. Nxc7 Ne2+ 26. Kf2 Nxg3 27. Nxe6 Nxe4+
28. Bxe4 Bxe6 29. Rfc1 d5 30. Bf3 Be7 31. h4 h6 32. gxh6 Bxh4+ 33. Ke2 Bg5
34. hxg7 Bxc1 35. Rxc1 bxc3 36. Rxc3 c4 37. Ra3 Rb8 38. Rxa5 Rxb2+ 39. Ke3 Kxg7
40. a4 Rb3+ 41. Ke2 d4 42. Bd5 Rb2+ 43. Kd1 Rb1+ 44. Kd2 c3+ 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Boerefijn, Martinus"]
[Black "Schmeisser, André"]
[Result "1/2-1/2"]
[ECO "B30"]
[EventDate "1978.09.10"]
[Opening "Sicilian defence"]
[Source "365chess.com"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3 Nc6 6. Bg2 b5 7. O-O Bb7 8. Re1 Be7 9. exd5 exd5 10. Nf1 O-O 11. Ne3 d4 12. Nf5 Nd5 13. Nxe7+ Ncxe7 14. Ng5 Qc7 15. Nf3 Ng6 16. h4 Rae8 17. h5 Ne5 18. Nh2 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Erős, Pál"]
[Black "Wünsche, Klaus Peter"]
[Result "0-1"]
[ECO "D56"]
[EventDate "1978.09.10"]
[Opening "QGD: Lasker defence"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7
Qxe7 9. Qb3 Nxc3 10. bxc3 Rd8 11. cxd5 exd5 12. c4 dxc4 13. Bxc4 Nc6 14. Be2 Rd6
15. O-O Be6 16. Qc3 Bd5 17. Nd2 Nxd4 18. Qxd4 Bxg2 19. Qc3 Rg6 20. f4 Bc6+
21. Kf2 Qh4# 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Florián, Jaromír"]
[Black "Carlin, Geoffrey"]
[Result "1-0"]
[ECO "D56"]
[EventDate "1978.09.10"]
[Opening "QGD: Lasker defence"]
[Source "365chess.com"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 c5 5. Bg2 Nc6 6. Nh3 e5 7. O-O Be7 8. c3 dxe4 9. dxe4 b6 10. Qc2 Ba6 11. Qa4 Qc8 12. Re1 b5 13. Qc2 b4 14. Nf1 c4 15. Ne3 Rb8 16. Nf5 Bf8 17. Bg5 h6 18. Bxf6 gxf6 19. Qe2 bxc3 20. bxc3 Ba3 21. Rad1 Qc7 22. Qg4 Ne7 23. Qg7 Rg8 24. Qxh6 Nxf5 25. exf5 Ke7 26. Nf4 Rgd8 27. Ng6+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Jennen, Herman"]
[Black "Alon, Levi"]
[Result "0-1"]
[ECO "D84"]
[EventDate "1978.09.10"]
[Opening "Gruenfeld: Gruenfeld gambit accepted"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. cxd5 Nxd5 7. Nxd5 Qxd5
8. Bxc7 Na6 9. Bxa6 bxa6 10. Nf3 Bd7 11. Qb3 Qxb3 12. axb3 Rfc8 13. Rc1 Rab8
14. Rc3 Rb7 15. Ba5 Rxc3 16. Bxc3 Rxb3 17. Kd2 a5 18. Ra1 a4 19. Ne1 e6 20. Nd3
Bf8 21. Nc5 Bxc5 22. dxc5 Kf8 23. Ra3 Rb7 24. Kc2 Ke7 25. b3 axb3+ 26. Rxb3 0-1

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Rudenskij, Nikolai"]
[Black "Walisiak, Roman"]
[Result "1-0"]
[ECO "D84"]
[EventDate "1978.09.10"]
[Opening "Gruenfeld: Gruenfeld gambit accepted"]
[Source "365chess.com"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. h3 Nc6 13. d5 Nd8 14. a4 Rb8 15. axb5 axb5 16. b4 c4 17. Nf1 Ne8 18. N3h2 f6 19. f4 g6 20. f5 g5 21. h4 gxh4 22. Qg4+ Ng7 23. Qxh4 Nf7 24. Ng4 Kh8 25. Nxf6 h5 26. Ng3 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Surjanto, Edy"]
[Black "Svensson, Roger"]
[Result "1-0"]
[ECO "B00"]
[EventDate "1978.09.10"]
[Opening "King's pawn opening"]
[Source "365chess.com"]

1. e4 d6 2. Nc3 Nf6 3. f4 g6 4. Nf3 Bg7 5. Bc4 O-O 6. O-O c5 7. Kh1 Nc6 8. d4
cxd4 9. Nxd4 Bd7 10. Nde2 a6 11. Ng3 b5 12. Bd3 Bg4 13. Be2 Bxe2 14. Ncxe2 Qb6
15. Ng1 Rac8 16. c3 b4 17. Bd2 bxc3 18. Bxc3 Qb5 19. a4 Qb7 20. f5 Nb8 21. e5
dxe5 22. fxg6 hxg6 23. Bxe5 Nbd7 24. Bc3 Nb6 25. Nh3 Nbd5 26. Qf3 Qc6 27. Bxf6
Nxf6 28. Ng5 Qxf3 29. Nxf3 e6 30. h3 Nd5 31. Rab1 Rc2 32. Ne1 Rxb2 33. Rxb2 Bxb2
34. Nd3 Bg7 35. Nc5 a5 36. Nb7 Rb8 37. Nxa5 Ra8 38. Nb3 Rxa4 39. Ne2 Ra2
40. Nec1 Rc2 41. Re1 Nf4 42. Re4 Nh5 43. Kh2 Bh6 44. Re2 Bf4+ 45. Kg1 Rxc1+
46. Nxc1 Bxc1 47. Kf2 Bg5 48. Re4 Nf6 49. Re5 Bf4 50. Ra5 Nd5 51. Kf3 Bc7
52. Ra4 Kg7 53. g4 g5 54. Ra8 Nf4 55. Ra7 Be5 56. Ra5 Kf6 57. Ke4 Bc3 58. Ra3
Nd5 59. Ra8 Be1 60. Ra1 Bf2 61. Rf1 Nc3+ 62. Kd3 Nd5 63. Rxf2+ Ke7 64. Rf3 f6
65. Ke4 Nc7 66. Rb3 Nd5 67. Kd4 Kd6 68. Ra3 Nc7 69. Rb3 Nd5 70. Rb1 Nf4 71. Rh1
e5+ 72. Ke4 Ke6 73. Ra1 Nxh3 74. Ra6+ Ke7 75. Kf5 Nf2 76. Rxf6 Nxg4 77. Rg6 Ne3+
78. Kxe5 g4 79. Kf4 Nc4 80. Rxg4 Nd6 81. Rg6 Nc4 82. Ke4 Nd2+ 83. Kd5 Kf7
84. Rg3 Nb1 85. Rb3 Nd2 86. Rb2 {Black lost on time.} 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Tiefenbacher, Richard"]
[Black "Free, Terry"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1978.09.10"]
[Opening "Sicilian: Kan, Maroczy bind (Reti variation)"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6
8. Nxc6 Bxc3+ 9. bxc3 bxc6 10. O-O d5 11. e5 Nd7 12. Qg4 Qc7 13. f4 g6 14. Be3
O-O 15. Rf3 f5 16. Qh4 Rf7 17. g4 Nf8 18. Bc5 Nd7 19. Bd6 Qa7+ 20. Kf1 Nc5
21. gxf5 exf5 22. Qd8+ Kg7 23. e6 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Tonteri, Ari"]
[Black "Slagle, James Robert"]
[Result "1-0"]
[ECO "C09/17"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, open variation, main line"]
[Source "365chess.com"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5
8. O-O Ne7 9. Nb3 Bd6 10. Bg5 O-O 11. Re1 Qc7 12. h3 Bf5 13. c3 Rfe8 14. Bxe7
Rxe7 15. Qxd5 Be6 16. Qd2 Bxb3 17. axb3 Rd8 18. Rxe7 Nxe7 19. Qe2 a6 20. Bd3 Nd5
21. Qe4 Nf6 22. Qc4 h6 23. b4 Qb6 24. Bc2 Qc7 25. Bb3 Kf8 26. b5 Qxc4 27. Bxc4
axb5 28. Bxb5 Ne4 29. Re1 f5 30. Nd4 Ra8 31. Nxf5 Nxf2 32. Nxd6 Nd3 33. Bxd3 Rd8
34. Rf1+ 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Vaccani, Mario"]
[Black "Vidinha, A"]
[Result "1-0"]
[ECO "C09/17"]
[EventDate "1978.09.10"]
[Opening "French: Tarrasch, open variation, main line"]
[Source "365chess.com"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 d5 4. e3 Nbd7 5. Bd3 c5 6. c3 cxd4 7. cxd4 g6 8. O-O Bg7 9. Re1 O-O 10. b3 a6 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Nf6 14. Bd3 b5 15. a4 Bd7 16. Ne5 Re8 17. Qf3 Qa5 18. Bg5 1-0

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Winkelmann, Max"]
[Black "Hansen, Åge"]
[Result "1/2-1/2"]
[ECO "A53"]
[EventDate "1978.09.10"]
[Opening "Old Indian defence"]
[Source "365chess.com"]

1. d4 Nf6 2. c4 d6 3. Nf3 e6 4. g3 Be7 5. Nc3 O-O 6. Bg2 c6 7. O-O Nbd7 8. Qc2
Re8 9. b3 d5 10. cxd5 exd5 11. e3 Nf8 12. Bb2 Bd6 13. Nd2 Ne6 14. Rfe1 Ng5
15. Nf3 Nxf3+ 16. Bxf3 Bh3 17. Bg2 Qd7 18. Qd3 Re7 19. Bxh3 Qxh3 20. Qf1 Qh6
21. Kg2 Rae8 22. Rad1 Bb4 23. a3 Bxc3 24. Bxc3 Re4 25. Bd2 Qg6 26. Bc1 R4e6
27. Qd3 Qxd3 28. Rxd3 h6 29. f3 Kh7 30. Rdd1 g6 31. Bd2 h5 32. h4 a6 33. Kf2 Ng8
34. Bc1 Nf6 35. Bd2 Kg7 36. Bc3 Kh7 37. Rc1 1/2-1/2

[Event "4th IBCA world championship"]
[Site "Bruges"]
[Date "1978.09.21"]
[Round "11"]
[White "Zeitler, Hans Jürgen"]
[Black "Fesche, Svein Tore"]
[Result "1-0"]
[ECO "B28"]
[EventDate "1978.09.10"]
[Opening "Sicilian: O'Kelly variation"]
[Source "365chess.com"]

1. e4 c5 2. Nf3 a6 3. c3 e6 4. d4 cxd4 5. cxd4 Nf6 6. Bd3 Bb4+ 7. Bd2 Bxd2+
8. Nbxd2 d6 9. Qa4+ Bd7 10. Qa3 O-O 11. Qxd6 Bb5 12. Qa3 Nc6 13. Bxb5 axb5
14. Qd3 Nb4 15. Qb3 Qa5 16. O-O Nxa2 17. Rfe1 Qa4 18. Re3 Ng4 19. Qxa4 Rxa4
20. Rb3 b4 21. Ne1 Rc8 22. Nd3 Rc2 23. Nf1 h6 24. f3 Nf6 25. Ne3 Rc7 26. Nc5 Ra7
27. Rxb4 Nxb4 28. Rxa7 Nc6 29. Rxb7 Rxb7 30. Nxb7 Nxd4 31. Nc5 Kf8 32. Kf2 Ke7
33. Nc4 Nd7 34. Nxd7 Kxd7 35. Ke3 Nb5 36. Kd3 f6 37. Ne3 Kc6 38. f4 Kc5 39. Nc4
Nc7 40. Kc3 Nb5+ 41. Kd3 Nc7 42. Ne3 Nb5 43. Nc2 Nc7 44. b4+ Kb5 45. Kc3 g5
46. Nd4+ Kb6 47. g3 gxf4 48. gxf4 h5 49. Kc4 e5 50. fxe5 fxe5 51. Nf3 Kc6
52. Nxe5+ Kd6 53. Nd3 Ke6 54. b5 1-0

