[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Cseh, Andor"]
[Black "Hacsak, Istvan"]
[Result "0-1"]
[ECO "E94"]
[PlyCount "110"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. e4 d6 6. Be2 e5 7. dxe5 dxe5 8. 0-0 Nbd7 9. Qc2 c6 10. Rd1 Qe7 11. b3 a5 12. a4 Nc5 13. Ba3 b6 14. Ne1 Ne8 15. Nd3 Nc7 16. Bf3 N7e6 17. Ne2 Ng5 18. Ne1 f5 19. Ng3 Nge6 20. Rab1 Nd4 21. Qd2 Qh4 22. Bxc5 bxc5 23. Qc3 Bd7 24. Qd3 f4 25. Nf1 Rf7 26. g3 Qg5 27. Bg2 Raf8 28. Rb2 f3 29. Nxf3 Rxf3 30. Bxf3 Rxf3 31. Ne3 Bh6 32. Kg2 Rf8 33. h3 Qe7 34. Re1 Be6 35. Qd1 Nf3 36. Rh1 Ng5 37. Ng4 Bg7 38. Qe2 h5 39. Ne3 Nxe4 40. Qe1 Qf7 41. h4 Qf3+ 42. Kg1 Bh6 43. Nf1 Bg7 44. Re2 Nd6 45. Re3 Qf7 46. Nd2 Bg4 47. f3 Bc8 48. Ne4 Nxe4 49. fxe4 Qd7 50. Qe2 Qd4 51. Qd3 Bh6 52. Qxd4 cxd4 53. Re2 d3 54. Rb2 d2 55. Kg2 Bg4 0-1

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Dozsa, Paul"]
[Black "Hacsak, Istvan"]
[Result "1/2-1/2"]
[ECO "C68"]
[PlyCount "33"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Bg4 7. Qxd8+ Rxd8 8. Be3 Nf6 9. Nbd2 Bb4 10. c3 Be7 11. Ne5 0-0 12. f3 Be6 13. Kf2 Ne8 14. Rhd1 f6 15. Nec4 Nd6 16. Nxd6 cxd6 17. Bb6 1/2-1/2

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Daroczy, Bela"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "123"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Bg5 Qxe2+ 8. Bxe2 Be7 9. Nc3 Bd7 10. 0-0 h6 11. Bh4 Nc6 12. Rad1 g5 13. Bg3 0-0-0 14. d4 g4 15. Nh4 Nh5 16. Nd5 Rde8 17. Nc3 Nxg3 18. hxg3 Bxh4 19. gxh4 f5 20. Rfe1 f4 21. Nd5 f3 22. gxf3 gxf3 23. Bxf3 Rxe1+ 24. Rxe1 Nxd4 25. Bg2 Re8 26. Rxe8+ Bxe8 27. c3 Ne2+ 28. Kf1 Nc1 29. Ne7+ Kd8 30. Nf5 h5 31. Bxb7 Nd3 32. b4 Bb5 33. Kg2 Bc4 34. Ng3 Bf7 35. Kf3 Ne5+ 36. Kf4 Nd3+ 37. Ke3 Ne5 38. a4 c6 39. Ba6 Ng4+ 40. Kf3 Bd5+ 41. Ke2 Bf7 42. Bd3 Kc7 43. f4 Nf6 44. Kf3 Bb3 45. a5 c5 46. bxc5 dxc5 47. c4 Ba4 48. f5 Be8 49. Kf4 Kd6 50. Ne4+ Nxe4 51. Bxe4 Bf7 52. Bd3 Bg8 53. Kg5 Ke5 54. Kxh5 Kf6 55. Kg4 Bf7 56. h5 Bg8 57. h6 Bh7 58. Be4 Bg8 59. Bd5 Bh7 60. Be6 Ke5 61. Kg5 a6 62. Bc8 1-0

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Szekely, Jeno"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "107"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nb1 Nc6 6. d3 Nf6 7. Nf3 e5 8. 0-0 h6 9. Nbd2 Bg4 10. h3 Be6 11. Nc4 Qc7 12. Qe2 b5 13. Ncd2 Qd7 14. Kh2 Bd6 15. Nh4 Nb4 16. Nb3 a5 17. a3 Nc6 18. Nf5 Bf8 19. Nd2 g6 20. Nh4 c4 21. dxc4 b4 22. f4 exf4 23. gxf4 Qc7 24. e5 Nh5 25. Bd5 Nxf4 26. Rxf4 g5 27. Bxe6 fxe6 28. Ng6 Bg7 29. Nxh8 gxf4 30. Qh5+ Kf8 31. Ng6+ Kg8 32. Nf3 Kh7 33. Bxf4 bxa3 34. bxa3 Ne7 35. Rg1 Nxg6 36. Qxg6+ Kh8 37. Bxh6 Bxe5+ 38. Nxe5 Qxe5+ 39. Qg3 Qxg3+ 40. Rxg3 Rc8 41. Bg7+ Kh7 42. Bxd4 Rxc4 43. c3 Ra4 44. Bc5 Rc4 45. Bb6 Ra4 46. Bc5 Rc4 47. Be7 e5 48. Kg2 e4 49. Kf2 Kh6 50. Bf6 a4 51. Ke3 Kh5 52. Bd4 Kh4 53. Rg6 Kxh3 54. Kxe4 1-0

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Szigeti, Miklos"]
[Result "1/2-1/2"]
[ECO "B01"]
[PlyCount "82"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Bc4 g6 5. Nf3 Bg7 6. d3 Nh6 7. Bf4 c6 8. 0-0 Nd7 9. Re1 0-0 10. Qe2 Nf5 11. Rab1 b5 12. Bb3 a5 13. a3 Nc5 14. Ba2 b4 15. Ne4 Ne6 16. Be5 Bxe5 17. Nxe5 Nfd4 18. Qd2 Qc7 19. Ng3 Rb8 20. axb4 axb4 21. Bc4 Kg7 22. c3 bxc3 23. Qxc3 c5 24. Bxe6 Bxe6 25. b4 Rfc8 26. Nf3 Kg8 27. Nxd4 cxd4 28. Qxd4 Rd8 29. Qe4 Qc3 30. Re3 Rd4 31. Qe5 Rbxb4 32. Rxb4 Qxb4 33. h3 Rd5 34. Qa1 Ra5 35. Qe1 Qc5 36. Ne4 Qa7 37. Qc3 Ra3 38. Qb4 Ra4 39. Qc3 Ra3 40. Qd2 Qd4 41. Ng5 Bd5 1/2-1/2

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Szobi, Tibor"]
[Result "1-0"]
[ECO "A10"]
[PlyCount "99"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. g3 d5 5. Bg2 c6 6. 0-0 Nbd7 7. b3 Bd6 8. Ba3 Bxa3 9. Nxa3 Qe7 10. Nc2 Ne4 11. Nce1 g5 12. Nd3 g4 13. Nfe5 Ng5 14. cxd5 exd5 15. Qd2 Nxe5 16. Nxe5 Be6 17. f3 gxf3 18. exf3 Nf7 19. Rae1 0-0-0 20. Qf4 Qd6 21. Nd3 Qxf4 22. Nxf4 Bd7 23. Re7 Nd6 24. a4 Rde8 25. Rfe1 Kd8 26. Rxe8+ Rxe8 27. Rxe8+ Nxe8 28. Kf2 Kc7 29. Ke3 Kb6 30. Nd3 Kc7 31. Kf4 Kd6 32. Kg5 b6 33. Kh6 c5 34. Kxh7 c4 35. Nb2 c3 36. Nd3 b5 37. a5 Nc7 38. Nb4 Ne6 39. Nc2 Be8 40. Kh6 f4 41. Bh3 Nxd4 42. Nxd4 Ke5 43. Nc2 fxg3 44. hxg3 d4 45. Bf1 Bc6 46. f4+ Ke4 47. Bg2+ Kd3 48. Nb4+ Kd2 49. Bxc6 d3 50. Bxb5 1-0

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Vajay, Lajos"]
[Result "1-0"]
[ECO "E68"]
[PlyCount "79"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. d4 Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Nc5 10. f3 a5 11. Ndb5 Be6 12. b3 Nfd7 13. Be3 Ne5 14. f4 Ng4 15. Bd4 Bxd4+ 16. Qxd4 Bd7 17. h3 Ne6 18. Qd2 Nf6 19. Nd4 c6 20. Kh2 Qc7 21. Rae1 Rad8 22. f5 Nc5 23. Qg5 Kg7 24. fxg6 fxg6 25. e5 Ng8 26. e6 Rxf1 27. Bxf1 Bc8 28. Nf5+ Kh8 29. e7 Re8 30. Qf4 Bxf5 31. Qd4+ Nf6 32. Qxf6+ Kg8 33. Bg2 Qd7 34. Nd5 Nd3 35. Rf1 h5 36. g4 hxg4 37. hxg4 Ne5 38. gxf5 cxd5 39. Bxd5+ Kh7 40. Qh4+ 1-0

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Kalmar"]
[Black "Hacsak, Istvan"]
[Result "1/2-1/2"]
[ECO "B05"]
[PlyCount "39"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Bc4 dxe5 6. h3 Bh5 7. g4 Nb6 8. Bb3 e4 9. gxh5 exf3 10. Qxf3 e6 11. Qxb7 Qxd4 12. Be3 Qe5 13. Ba4+ N8d7 14. Bxd7+ Kxd7 15. Nc3 Bd6 16. 0-0-0 Rab8 17. Qe4 Qxe4 18. Nxe4 Ke7 19. h6 gxh6 20. Bxh6 1/2-1/2

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "51"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. exd5 Qxd5 5. d4 cxd4 6. Qxd4 Nf6 7. Bc4 Qxd4 8. Nxd4 Bg7 9. Nb5 Na6 10. Be3 b6 11. h3 0-0 12. Nd2 Bb7 13. 0-0 Nc5 14. Rfe1 e6 15. a4 Nfe4 16. Nxe4 Nxe4 17. f3 Nc5 18. a5 Rfc8 19. Nd6 Rc7 20. axb6 axb6 21. Nxb7 Rxa1 22. Rxa1 Rxb7 23. Ra8+ Bf8 24. Bh6 Nd7 25. Bb5 Rb8 26. Rxb8 1-0

[Event "Debrecen"]
[Site "Debrecen"]
[Date "1956.??.??"]
[Round "?"]
[White "Rieger"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "D27"]
[PlyCount "59"]
[EventDate "1956.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 cxd4 4. exd4 d5 5. Nc3 dxc4 6. Bxc4 e6 7. Nf3 Be7 8. 0-0 0-0 9. Bg5 Nc6 10. Rc1 a6 11. Bd3 Nb4 12. Bb1 b5 13. Qe2 Bb7 14. Rfd1 Rc8 15. a3 Nbd5 16. Ne4 Nxe4 17. Qxe4 g6 18. Bh6 Re8 19. Qd3 Nb6 20. Rxc8 Bxc8 21. Ne5 Qd5 22. Qg3 Bd6 23. f4 Bxe5 24. fxe5 Bb7 25. b3 Rc8 26. h4 Rc3 27. Qg5 Re3 28. Rd2 Re1+ 29. Kh2 Rf1 30. Qe7 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Binet Tapaszto, Laszlo"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "A45"]
[PlyCount "71"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. f3 Nf6 5. Nc3 Bf5 6. Nh3 e6 7. Qd2 c6 8. Nf2 Bb4 9. a3 Qa5 10. Rb1 Bxc3 11. Qxc3 Qxc3+ 12. bxc3 b5 13. Kd2 Nbd7 14. g4 Bg6 15. h4 h5 16. g5 Ng8 17. a4 Nb6 18. axb5 cxb5 19. Rxb5 Nc4+ 20. Ke1 Bxc2 21. e4 Ba4 22. Rb4 Bd7 23. Bxc4 dxc4 24. Rxc4 a5 25. Kd2 a4 26. Nd3 a3 27. Ra1 Ne7 28. Ne5 Ng6 29. Nxg6 fxg6 30. Bd6 a2 31. Rb4 Bc6 32. Rb3 Kd7 33. Be5 Rhf8 34. c4 Ba4 35. Ra3 Bc6 36. Rxa8 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Grob, Gedeon"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "C61"]
[PlyCount "71"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 c6 6. Bc4 d6 7. d3 Nf6 8. c3 dxc3 9. bxc3 Be7 10. Bb3 0-0 11. Bg5 Re8 12. Bh4 a5 13. Nd2 b5 14. a4 Qc7 15. Bg3 Bg4 16. f3 Bc8 17. f4 bxa4 18. Bxa4 Ba6 19. Nb3 Nd7 20. Nd4 Bf6 21. e5 dxe5 22. Nxc6 e4 23. Ne5 Bxe5 24. fxe5 Bxd3 25. Rxf7 Qa7+ 26. Bf2 e3 27. Qxd3 exf2+ 28. Rxf2 Nc5 29. Qd5+ Re6 30. Bc2 Kh8 31. Raf1 Rg8 32. Rf7 Qb6 33. Kh1 Qc6 34. Qd8 Ree8 35. Qh4 h6 36. R1f6 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Barczay, Laszlo"]
[Result "1/2-1/2"]
[ECO "A30"]
[PlyCount "40"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Nc3 Bb7 5. Bg2 c5 6. 0-0 Be7 7. d4 cxd4 8. Nxd4 Bxg2 9. Kxg2 Qc8 10. Qa4 Na6 11. Nb3 0-0 12. Bf4 Nc5 13. Nxc5 bxc5 14. Rfd1 Rd8 15. f3 d6 16. e4 Rb8 17. Rd2 Rb7 18. b3 h6 19. Re1 Qd7 20. Qxd7 Rbxd7 1/2-1/2

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Erdy, Bela"]
[Result "0-1"]
[ECO "C53"]
[PlyCount "60"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. d4 Bb6 6. d5 Nd8 7. d6 Qxd6 8. Qxd6 cxd6 9. Bd5 Ne7 10. Na3 Nxd5 11. exd5 f6 12. 0-0 Nf7 13. Be3 Bxe3 14. fxe3 Ke7 15. Nh4 g6 16. Rf2 Ng5 17. c4 b6 18. Nb5 Ne4 19. Rc2 a6 20. Nc3 Nxc3 21. Rxc3 b5 22. e4 bxc4 23. Rxc4 a5 24. Kf2 Ba6 25. Rc7 Rhc8 26. Rac1 Kd8 27. R7c3 Rxc3 28. Rxc3 Rb8 29. Rb3 Rb4 30. Ke3 f5 0-1

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Gereben, Erno"]
[Result "1/2-1/2"]
[ECO "B63"]
[PlyCount "35"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Nxd4 9. Qxd4 0-0 10. e5 dxe5 11. Qh4 Nd5 12. Bxe7 Qxe7 13. Qg3 Nxc3 14. Qxc3 Qg5+ 15. Kb1 Rd8 16. Rxd8+ Qxd8 17. Be2 Qf6 18. Rd1 1/2-1/2

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Hajtun, Jozsef"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "86"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 Bg4 5. c3 Nf6 6. d5 Nb8 7. h3 Bd7 8. Bd3 Be7 9. 0-0 0-0 10. Bg5 Nxd5 11. Bxe7 Nxe7 12. Qb3 b6 13. Nbd2 Ng6 14. Rfd1 a5 15. a4 Na6 16. Bc4 Nc5 17. Qc2 Qf6 18. b4 Ne6 19. Bd5 Ra7 20. g3 Ng5 21. Nxg5 Qxg5 22. Nf3 Qh5 23. Rd3 Bxh3 24. Nh2 Bd7 25. b5 Ne7 26. Bc4 Qg6 27. Nf3 Be6 28. Bxe6 Qxe6 29. Kg2 h6 30. c4 Raa8 31. Rad1 f5 32. Re3 f4 33. Red3 fxg3 34. fxg3 Qg4 35. Re3 Ng6 36. Nh2 Qg5 37. Qd2 Kh8 38. Kh1 Rf6 39. Nf3 Qg4 40. Qg2 Raf8 41. Rf1 Qh5+ 42. Kg1 Nf4 43. gxf4 exf4 0-1

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Kluger, Gyula"]
[Result "1/2-1/2"]
[ECO "C56"]
[PlyCount "146"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxd4 Nxd4 10. Qxd4 Be6 11. Qxe4 0-0-0 12. Bf4 Bc5 13. Rab1 Bd4 14. b4 Qh5 15. Na4 Bxa2 16. Rbc1 Be6 17. c3 Bf6 18. Nc5 Bd5 19. Qe3 Qg6 20. Qh3+ Kb8 21. c4 Bxg2 22. Qxg2 Qxg2+ 23. Kxg2 Kc8 24. Ne4 Be7 25. Nc5 Bxc5 26. bxc5 Rhe8 27. Be3 Re6 28. Rcd1 Rxd1 29. Rxd1 Re5 30. Rd4 Re6 31. Rh4 h6 32. Kf3 a5 33. Re4 Ra6 34. Re8+ Kd7 35. Rf8 Rf6+ 36. Ke2 Kc6 37. Kd3 Rf5 38. Ra8 Rh5 39. Rxa5 Rxh2 40. Ra8 Rh5 41. Rg8 g6 42. Rh8 Rh3 43. Rxh6 Rxh6 44. Bxh6 Kxc5 45. Bf8+ Kc6 46. Ke4 b5 47. cxb5+ Kxb5 48. Ke5 Kc4 49. Kf6 Kd3 50. Kxf7 g5 51. Kg6 Ke2 52. Bc5 g4 53. Kg5 Kf3 54. Kh4 Kf4 55. Ba7 Kf3 56. Be3 g3 57. fxg3 Kxe3 58. g4 c5 59. g5 c4 60. g6 c3 61. g7 c2 62. g8Q Ke2 63. Qa2 Kd1 64. Qd5+ Kc1 65. Qb3 Kd2 66. Qb2 Kd1 67. Qb3 Kd2 68. Qb4+ Kd1 69. Qd6+ Kc1 70. Qb8 Kd2 71. Qd8+ Kc1 72. Qb6 Kd2 73. Qf2+ Kc1 1/2-1/2

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Meszaros, Gyula2222"]
[Result "1-0"]
[ECO "A30"]
[PlyCount "67"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 f5 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. Bg5 Bg7 7. e3 Nc6 8. Be2 0-0 9. 0-0 a6 10. Qd2 e6 11. Rad1 Qe8 12. Nxc6 dxc6 13. e4 e5 14. exf5 gxf5 15. Bh6 Be6 16. Bxg7 Kxg7 17. Qd6 Bf7 18. Qc7 Qb8 19. Qb6 Re8 20. Na4 Re7 21. Rd2 Qc7 22. Rfd1 Rc8 23. Qe3 Ne4 24. Nb6 f4 25. Qxe4 Qxb6 26. Qf5 Rce8 27. Qg5+ Kf8 28. Qh6+ Kg8 29. Bh5 Bxh5 30. Qxh5 Qc7 31. Rd7 Qb8 32. Qg5+ Kf7 33. R1d6 Rxd7 34. Qf6+ 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Hacsak, Istvan"]
[Black "Tipary, Lajos"]
[Result "0-1"]
[ECO "B11"]
[PlyCount "76"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d3 Nf6 7. g3 Bb4 8. Bd2 d4 9. Nb1 Bxd2+ 10. Nxd2 Qc7 11. Bg2 c5 12. 0-0 Nc6 13. Nc4 Ne5 14. Nxe5 Qxe5 15. Qe2 Qc7 16. c4 Nd7 17. Qh5 0-0 18. f4 e5 19. f5 f6 20. g4 Qd8 21. h4 Qe8 22. Qxe8 Rfxe8 23. g5 a6 24. Bf3 b5 25. Rfc1 Reb8 26. Rab1 Ra7 27. Bd1 Kf8 28. Bb3 Ke7 29. Kf2 Kd6 30. Rg1 Nb6 31. gxf6 gxf6 32. Rg3 bxc4 33. Bxc4 Nxc4 34. dxc4 a5 35. b3 a4 36. a3 Rab7 37. Ke2 Rxb3 38. Rgxb3 Rxb3 0-1

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Honfi, Karoly"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "91"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. Ng5 d5 6. exd5 Qe7+ 7. Kf1 Ne5 8. Qxd4 Nxc4 9. Qxc4 Qc5 10. Qxc5 Bxc5 11. Nc3 0-0 12. Bf4 Bb6 13. Nge4 Bf5 14. Nxf6+ gxf6 15. Na4 Rfd8 16. Nxb6 axb6 17. d6 cxd6 18. c3 Re8 19. Be3 Bd3+ 20. Ke1 Bc4 21. a3 f5 22. g3 Ra5 23. Rd1 d5 24. Kd2 Bb3 25. Rde1 b5 26. Rhg1 Ra6 27. g4 f4 28. Bxf4 Rae6 29. Be3 f6 30. Rg3 Kf7 31. Reg1 Rg8 32. Rf3 Ke7 33. Rgg3 Bc4 34. Rh3 Rg7 35. Rh6 Bf1 36. Rf4 Rf7 37. Rf5 Kd6 38. Rfh5 Ree7 39. g5 Ke6 40. Bd4 Kd7 41. gxf6 Re2+ 42. Kc1 Re1+ 43. Kc2 Bg2 44. Kd2 Rb1 45. Rxh7 Rxb2+ 46. Ke3 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Jenei, Ferenc"]
[Black "Hacsak, Istvan"]
[Result "1/2-1/2"]
[ECO "D37"]
[PlyCount "84"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Be7 5. Qb3 0-0 6. Bg5 dxc4 7. Qxc4 a6 8. e3 b5 9. Qb3 Nbd7 10. Rd1 Bb7 11. Be2 c5 12. 0-0 Qc7 13. a3 c4 14. Qc2 h6 15. Bh4 Qc6 16. e4 g5 17. d5 exd5 18. exd5 Qc5 19. Bg3 Nxd5 20. Nxd5 Bxd5 21. b4 Qc6 22. Nd4 Qf6 23. Nf5 Be6 24. Nxe7+ Qxe7 25. Bd6 Qf6 26. Bxf8 Nxf8 27. Bf3 Ra7 28. Bd5 a5 29. Bxe6 Nxe6 30. Rd5 axb4 31. axb4 Ra1 32. Rxa1 Qxa1+ 33. Qd1 Qb2 34. Rxb5 c3 35. Rb8+ Kg7 36. Rc8 Qd2 37. Qa1 Nd4 38. h3 Qb2 39. Qa8 Qc1+ 40. Kh2 Qf4+ 41. Kg1 Qc1+ 42. Kh2 Qf4+ 1/2-1/2

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Negyesy, Gyorgy"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "E53"]
[PlyCount "43"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 0-0 6. Bd3 b6 7. a3 Bxc3+ 8. bxc3 Ba6 9. cxd5 Bxd3 10. Qxd3 exd5 11. 0-0 c5 12. dxc5 bxc5 13. c4 Nc6 14. Bb2 dxc4 15. Qxc4 Na5 16. Qa4 Rb8 17. Bc3 Nb3 18. Rab1 Qb6 19. Nd2 c4 20. Nxc4 Qb5 21. Qxb5 Rxb5 22. Bb4 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Pogats, Jozsef"]
[Black "Hacsak, Istvan"]
[Result "1/2-1/2"]
[ECO "C90"]
[PlyCount "49"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. d3 d6 9. c3 Na5 10. Bc2 c5 11. Nbd2 Qc7 12. Nf1 Bd7 13. Ne3 Rfc8 14. h3 b4 15. Nh2 Be6 16. Nhf1 Rab8 17. g4 g6 18. Ng3 Qb7 19. Kh2 Rd8 20. Qf3 d5 21. g5 dxe4 22. Qxe4 Ne8 23. h4 Nc7 24. Kg2 Nb5 25. Ne2 1/2-1/2

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Somogyi, Istvan"]
[Black "Hacsak, Istvan"]
[Result "1-0"]
[ECO "A31"]
[PlyCount "69"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 c5 4. Bg2 Nc6 5. Nf3 Bg7 6. 0-0 d6 7. d4 cxd4 8. Nxd4 Bd7 9. Nc2 Rc8 10. b3 h5 11. Bb2 Ne5 12. h3 h4 13. g4 Nexg4 14. hxg4 h3 15. Bxb7 h2+ 16. Kh1 Bxg4 17. Nd5 Bh3 18. Nxf6+ exf6 19. Ne3 Rc5 20. Bg2 Rg5 21. Qd3 Qd7 22. Rad1 Bxg2+ 23. Nxg2 d5 24. cxd5 Rh3 25. Qe4+ Kf8 26. d6 Kg8 27. Qa4 Qb7 28. f3 Rhg3 29. d7 Rxg2 30. d8Q+ Kh7 31. Qh4+ Rh5 32. Qxh5+ gxh5 33. Kxg2 Qb5 34. Qd3+ Qxd3 35. Rxd3 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1955.??.??"]
[Round "?"]
[White "Weinberger, Tibor"]
[Black "Hacsak, Istvan"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "104"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "HUN"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Be2 Nf6 4. d3 d5 5. Nbd2 Be6 6. c3 Qd7 7. 0-0 Bc5 8. b4 Bd6 9. Qc2 0-0 10. Nb3 Ne7 11. Nc5 Qc8 12. Nxe5 Bxe5 13. f4 Bd6 14. Nxe6 Qxe6 15. e5 Bxe5 16. fxe5 Qxe5 17. Bf4 Qe6 18. Qd2 Qd7 19. Bg5 Ne8 20. Rf3 f6 21. Raf1 Ng6 22. Be3 Ne5 23. Rh3 Nd6 24. Qe1 Rae8 25. Qh4 g5 26. Qh5 Ng6 27. Bd1 b6 28. c4 d4 29. Bd2 Qg7 30. c5 Nb5 31. Qg4 Ne5 32. Qg3 Re7 33. a4 Nc3 34. Bxc3 dxc3 35. d4 Ng6 36. Qxc3 f5 37. Re3 Rxe3 38. Qxe3 Nf4 39. g3 Ng6 40. Bc2 f4 41. Qe4 bxc5 42. bxc5 c6 43. d5 Qc3 44. dxc6 Qxc5+ 45. Kg2 Rf6 46. Bb3+ Kg7 47. Be6 Ne5 48. gxf4 gxf4 49. Bd5 Rg6+ 50. Kh1 Ng4 51. c7 Nf2+ 52. Rxf2 Qc1+ 0-1

