[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "1"]
[White "Tatai, Stefano"]
[Black "Cortlever, Nicolaas"]
[Result "1-0"]
[ECO "C81"]
[PlyCount "80"]
[EventDate "1970.07.13"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. Qe2 Be7 10. Rd1 Nc5 11. Nc3 Nxb3 12. cxb3 O-O 13. h3 Qd7 14. Bg5 h6 15.
Bxe7 Nxe7 16. Ne4 Rad8 17. Nc5 Qc8 18. Nd4 Nf5 19. Rac1 Nxd4 20. Rxd4 Rfe8 21.
Qd2 c6 22. f4 Bf5 23. b4 f6 24. exf6 gxf6 25. g4 Be4 26. f5 Qc7 27. Qh2 Qe5 28.
Qxe5 fxe5 29. Rd2 Bf3 30. Kf2 e4 31. Ke3 Rd6 32. Nb3 Kf7 33. Nd4 Kf6 34. Rdc2
Ke5 35. Rxc6 Bg2 36. Rxd6 Kxd6 37. Rc6+ Kd7 38. Rxh6 Rc8 39. Rh7+ Kd6 40. g5
Rc1 1-0

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "2"]
[White "Tatai, Stefano"]
[Black "Timman, Jan Hendrik"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "81"]
[EventDate "1970.07.13"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. Nf3 Nf6 5. Nbd2 O-O 6. Be2 Nc6 7. O-O e5 8. dxe5
Nxe5 9. Nxe5 dxe5 10. Qc2 b6 11. Re1 Bb7 12. Bf1 Qd7 13. Nc4 Rfe8 14. f3 a5 15.
Be3 Qc6 16. Na3 Red8 17. Rad1 Bf8 18. Bb5 Qe6 19. Qb3 Qxb3 20. axb3 c6 21. Rxd8
Rxd8 22. Bxb6 Rd2 23. Nc4 Rc2 24. Ba4 Nd7 25. Be3 Nc5 26. Rc1 Rxc1+ 27. Bxc1
Nd3 28. Be3 Ba6 29. Nxa5 Nxb2 30. Nxc6 Nd1 31. Bb6 Nxc3 32. Nxe5 Bd6 33. Ng4
Bd3 34. e5 Be7 35. Ne3 Bg5 36. Bc6 Bf4 37. Nd5 Ne2+ 38. Kf2 Bxh2 39. f4 Nxf4
40. Nf6+ Kg7 41. Ng4 1-0

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "3"]
[White "Marovic, Drazen"]
[Black "Tatai, Stefano"]
[Result "1-0"]
[ECO "D80"]
[PlyCount "61"]
[EventDate "1970.07.13"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bh4 c5 6. cxd5 Nxc3 7. bxc3 Qxd5 8.
e3 Bg7 9. Qf3 Be6 10. Bb5+ Kf8 11. Qxd5 Bxd5 12. Nf3 Nc6 13. O-O a6 14. Be2
cxd4 15. cxd4 e5 16. dxe5 Nxe5 17. Nd4 Nc6 18. Nxc6 Bxc6 19. Rac1 h6 20. Bf3
Bxf3 21. gxf3 g5 22. Bg3 Bf6 23. Rc7 Kg7 24. Rxb7 Rhd8 25. Rc1 h5 26. h3 h4 27.
Bh2 Rd2 28. Rcc7 Rxa2 29. Rxf7+ Kg6 30. f4 Rd8 31. f5+ 1-0

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "4"]
[White "Tatai, Stefano"]
[Black "Van Geet, Dirk Daniel"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "63"]
[EventDate "1970.07.13"]

1. e4 Nc6 2. Nf3 e5 3. Bb5 Nf6 4. O-O Bc5 5. c3 O-O 6. d4 Bb6 7. Bxc6 dxc6 8.
Nxe5 Nxe4 9. Re1 Nd6 10. Bf4 Qf6 11. Qd2 h6 12. Na3 Be6 13. Nd3 Rad8 14. Be5
Qf5 15. Nf4 Nc4 16. Qe2 Nxa3 17. Nxe6 Qxe6 18. bxa3 Rfe8 19. Qf1 Qf5 20. Qc4 c5
21. dxc5 Rxe5 22. Rxe5 Qxe5 23. cxb6 axb6 24. h3 Rd2 25. Rf1 Rc2 26. Qa4 Rxa2
27. Qa8+ Kh7 28. Qxb7 Rxa3 29. c4 Rc3 30. Qc6 Qf4 31. Qd5 Qxc4 32. Qf5+ 0-1

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "5"]
[White "Adorjan, Andras"]
[Black "Tatai, Stefano"]
[Result "1-0"]
[ECO "B99"]
[PlyCount "71"]
[EventDate "1970.07.13"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. a3 Rb8 14. h4 b4 15.
axb4 Rxb4 16. Bh3 Nc5 17. f5 Qb7 18. fxe6 fxe6 19. Rhf1 Rf8 20. Qe3 Rxf1 21.
Rxf1 Qb6 22. Qf2 Rxd4 23. Nd5 Rxd5 24. exd5 Na4 25. Qxb6 Nxb6 26. dxe6 h6 27.
Rf7 hxg5 28. h5 Nd5 29. Rxg7 Bf8 30. Rg8 Ke7 31. Rh8 Nf6 32. Bf5 g4 33. Kd2 g3
34. Ke2 Bb7 35. h6 Nh5 36. Rh7+ 1-0

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "6"]
[White "Tatai, Stefano"]
[Black "Westerinen, Heikki M.J."]
[Result "1-0"]
[ECO "C69"]
[PlyCount "84"]
[EventDate "1970.07.13"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 Bg4 7. c3 Bd6 8. Be3
Nh6 9. dxe5 fxe5 10. h3 Bh5 11. Nbd2 Nf7 12. Qb3 Qc8 13. c4 c5 14. Qa4+ c6 15.
b4 b5 16. Qb3 cxb4 17. c5 Bc7 18. Qxb4 a5 19. Qb2 a4 20. Nh4 Qd7 21. Nf5 O-O-O
22. Nc4 Qd3 23. Nb6+ Kb7 24. Ng3 Bg6 25. Nxa4 h5 26. Nc3 Ba5 27. Rfc1 Ka6 28.
Qb3 Rhe8 29. Nd5 Qxb3 30. axb3 cxd5 31. b4 d4 32. Bd2 h4 33. Rxa5+ Kb7 34.
Rxb5+ Kc7 35. Nf5 Bxf5 36. exf5 Rb8 37. Ra5 Kc6 38. Ra6+ Kd5 39. f3 Re7 40. c6
Rc7 41. Rc5+ Kd6 42. Kf2 Nd8 1-0

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "7"]
[White "Prins, Lodewijk"]
[Black "Tatai, Stefano"]
[Result "1/2-1/2"]
[ECO "B54"]
[PlyCount "32"]
[EventDate "1970.07.13"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 Nc6 6. c4 e6 7. Nc3 Be7 8. Be3
O-O 9. Be2 d5 10. cxd5 exd5 11. exd5 Nxd5 12. Nxd5 Qxd5 13. Nxc6 Qxc6 14. O-O
Bc5 15. Bxc5 Qxc5+ 16. Kh1 Be6 1/2-1/2

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "8"]
[White "Tatai, Stefano"]
[Black "Bednarski, Jacek B."]
[Result "1/2-1/2"]
[ECO "C03"]
[PlyCount "27"]
[EventDate "1970.07.13"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 e5 5. exd5 Qxd5 6. Ngf3 exd4 7. Bc4 Qh5 8.
O-O Nf6 9. cxd4 Be7 10. Be2 Qd5 11. Nc4 O-O 12. Ne3 Qd6 13. Bc4 Na5 14. Bd3
1/2-1/2

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "9"]
[White "Van der Weide, Piet"]
[Black "Tatai, Stefano"]
[Result "0-1"]
[ECO "B93"]
[PlyCount "74"]
[EventDate "1970.07.13"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 Nbd7 8.
O-O b5 9. a4 b4 10. Na2 Bb7 11. Qe2 g6 12. Kh1 e5 13. Nb3 a5 14. c3 Bg7 15.
cxb4 axb4 16. Nxb4 O-O 17. f5 Rfb8 18. fxg6 hxg6 19. Bd2 d5 20. exd5 Nxd5 21.
Bb5 Nf4 22. Bxf4 exf4 23. Qd2 f3 24. gxf3 Ne5 25. Rac1 Qb6 26. Nd5 Qe6 27. Rc5
Rd8 28. Rd1 Nxf3 29. Qd3 Qh3 30. Qe2 Nd4 31. Nxd4 Rxd5 32. Bc6 Bxc6 33. Nxc6
Rxc5 34. Qe4 Rf8 35. b4 Rh5 36. Qf4 Qb3 37. Rd2 Qxa4 0-1

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "10"]
[White "Tatai, Stefano"]
[Black "Hamann, Svend"]
[Result "0-1"]
[ECO "B94"]
[PlyCount "36"]
[EventDate "1970.07.13"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qa5 8.
Qd2 e6 9. O-O-O b5 10. Bd5 exd5 11. exd5 Nc5 12. Rhe1+ Kd7 13. Nc6 Qb6 14. b4
Na4 15. Qd3 Nxc3 16. Qxc3 Ng4 17. Bd8 Qxf2 18. Rf1 Qe3+ 0-1

[Event "Torneo Internazionale B IBM"]
[Site "Amsterdam NED"]
[Date "1970.07.??"]
[Round "11"]
[White "Piket, Joop J."]
[Black "Tatai, Stefano"]
[Result "0-1"]
[ECO "E26"]
[PlyCount "65"]
[EventDate "1970.07.13"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b6 7. Bd3 Bb7 8. f3
O-O 9. e4 Ne8 10. Ne2 Nc6 11. d5 Ne5 12. f4 Nxd3+ 13. Qxd3 f5 14. e5 d6 15.
dxe6 Qe7 16. O-O Qxe6 17. Ng3 Rd8 18. Re1 Ba6 19. Qd5 Bxc4 20. Qxe6+ Bxe6 21.
exd6 Rxd6 22. a4 a5 23. Bb2 g6 24. c4 Bxc4 25. Re7 Re6 26. Rxe6 Bxe6 27. Be5
Nf6 28. Nf1 Nd7 29. Bd6 Rc8 30. Re1 Kf7 31. Nd2 Rc6 32. Be5 Nxe5 33. Rxe5 0-1

