[Event "CZE-chTV 0001"]
[Site "Czech Republic"]
[Date "2000.??.??"]
[Round "3"]
[White "Petras, Jan"]
[Black "Ambroz, Antonin"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2109"]
[PlyCount "22"]
[EventDate "2000.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 a6 6. Bf4 Nc6 7. e3 e6 8. h3 Bd6 9. Bxd6 Qxd6 10. Bd3 0-0 11. 0-0 e5 1/2-1/2

[Event "CZE-chTV 9900"]
[Site "Czech Republic"]
[Date "2000.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Dotlacil, Ladislav"]
[Result "1/2-1/2"]
[ECO "A55"]
[WhiteElo "2125"]
[BlackElo "2100"]
[PlyCount "74"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 c6 5. e4 e5 6. Be2 Be7 7. 0-0 0-0 8. Re1 a6 9. a4 a5 10. Bf1 Re8 11. g3 Bf8 12. Bg2 Qc7 13. h3 g6 14. Be3 exd4 15. Nxd4 Nc5 16. Qc2 Ne6 17. Rad1 Bg7 18. f4 Nxd4 19. Bxd4 Be6 20. b3 Nh5 21. Bf2 Rad8 22. Ne2 Bc8 23. g4 Nf6 24. Ng3 Nd7 25. Be3 Nc5 26. g5 b6 27. Qf2 Nd7 28. f5 Be5 29. Nf1 Nc5 30. Re2 Qb8 31. f6 Be6 32. Qh4 Kh8 33. Qh6 Rg8 34. Bxc5 dxc5 35. Red2 Rxd2 36. Rxd2 Bd4+ 37. Kh1 Qf8 1/2-1/2

[Event "CZE-chT2"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Gdovin, Jan"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C08"]
[WhiteElo "2235"]
[BlackElo "2125"]
[PlyCount "95"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. Be2 Nc6 7. dxc5 Bxc5 8. Nb3 Be7 9. 0-0 0-0 10. c3 Be6 11. Nbd4 Qd6 12. Bg5 Rad8 13. Re1 Ng4 14. Bxe7 Nxe7 15. Bd3 Ng6 16. h3 Nh6 17. Qc2 Bc8 18. Rad1 f5 19. c4 Nf4 20. Bf1 dxc4 21. Bxc4+ Kh8 22. Ne6 Nxe6 23. Rxd6 Rxd6 24. Bxe6 Rxe6 25. Rxe6 Bxe6 26. Qc5 Ra8 27. a3 a5 28. Nd4 Bg8 29. Nxf5 Nxf5 30. Qxf5 a4 31. Qb5 Bb3 32. Qxb7 Rd8 33. Kh2 h6 34. Kg3 Rd2 35. Qb8+ Kh7 36. Qe5 Bc2 37. f3 Bb3 38. h4 Kh8 39. Kh3 Rf2 40. Qd4 Rc2 41. g4 Kh7 42. f4 Rc4 43. Qd3+ Kg8 44. f5 Rc5 45. g5 hxg5 46. hxg5 Rc8 47. g6 Bc2 48. Qd5+ 1-0

[Event "CZE-chTV 9900"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Hrubant, Ivan"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2216"]
[BlackElo "2125"]
[PlyCount "49"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be7 6. d5 d6 7. e4 e5 8. Be2 0-0 9. 0-0 a5 10. Ne1 Na6 11. Be3 Nc5 12. f3 Ne8 13. b4 axb4 14. axb4 Na6 15. Nd3 f6 16. Rb1 Bc8 17. Qb3 Kh8 18. Ra1 Rb8 19. Ra3 g6 20. Rfa1 Ng7 21. Rxa6 Bxa6 22. Rxa6 Ra8 23. Qa4 Rxa6 24. Qxa6 Qa8 25. b5 1-0

[Event "CZE-chT2"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Eretova, Jana"]
[Result "1/2-1/2"]
[ECO "D59"]
[WhiteElo "2125"]
[BlackElo "2145"]
[PlyCount "61"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 0-0 6. e3 h6 7. Bh4 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Bd3 Bb7 11. 0-0 Nd7 12. Rc1 c5 13. Nxd5 exd5 14. b3 Rac8 15. Re1 Nf6 16. Ne5 Rfd8 17. Bf5 Rc7 18. Qc2 g6 19. Bh3 Ne4 20. g3 Bc8 21. Bg2 Ng5 22. f4 Bf5 23. Qb2 Ne4 24. g4 Bc8 25. dxc5 bxc5 26. Bxe4 dxe4 27. Qg2 Bb7 28. Rcd1 Rcc8 29. Qf1 Kg7 30. Qf2 Qe6 31. Qg2 1/2-1/2

[Event "CZE-chT2"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Hajek, Jan"]
[Result "1/2-1/2"]
[ECO "E42"]
[WhiteElo "2125"]
[BlackElo "2220"]
[PlyCount "102"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 cxd4 6. exd4 d5 7. a3 Be7 8. cxd5 exd5 9. Nf4 Nc6 10. Be2 0-0 11. Bf3 Be6 12. 0-0 Qd7 13. Nxe6 fxe6 14. Re1 Rae8 15. b4 Kh8 16. Bb2 Bd6 17. g3 Qf7 18. Bg2 e5 19. Nb5 Bb8 20. dxe5 Nxe5 21. Bd4 Nc6 22. Bc5 Rxe1+ 23. Qxe1 Re8 24. Qd1 Ne4 25. Bxe4 dxe4 26. Nd6 Bxd6 27. Qxd6 Rd8 28. Qf4 Qxf4 29. gxf4 a6 30. Re1 g6 31. Rxe4 Kg7 32. a4 Rd5 33. Be3 Kf7 34. Kg2 b5 35. axb5 axb5 36. Bc5 Rd3 37. Re3 Rd1 38. Re4 Rd3 39. Re3 Rd1 40. Ra3 Rd7 41. Ra6 Rc7 42. Kf3 h5 43. Ke4 Nxb4 44. Bxb4 Rc4+ 45. Ke5 Rxb4 46. Ra7+ Kf8 47. Rb7 Kg8 48. f3 Kf8 49. f5 gxf5 50. Rh7 Rh4 51. Rb7 Rxh2 1/2-1/2

[Event "CZE-chTV 9900"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Kolar, Pavel"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2125"]
[BlackElo "2145"]
[PlyCount "55"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be7 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 0-0 10. 0-0 Nbd7 11. Rae1 Ne4 12. Bxe7 Qxe7 13. Nd2 Nxd2 14. Qxd2 Nf6 15. f3 Rad8 16. Re2 h6 17. Rd1 Rfe8 18. e4 dxe4 19. fxe4 Qb4 20. a3 Qa5 21. Qf4 Qh5 22. Qf3 Qg5 23. e5 Nd5 24. Rf2 Qg6 25. Ne4 Re7 26. Nd6 f6 27. Re2 Nf4 28. Qxf4 1/2-1/2

[Event "CZE-chTV 9900"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Straka, Jaroslav"]
[Result "0-1"]
[ECO "A56"]
[WhiteElo "2125"]
[PlyCount "67"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 c5 2. d5 d6 3. e4 g6 4. c4 Bg7 5. Nc3 Nf6 6. Bf4 0-0 7. Be2 a6 8. a4 b6 9. Qd2 Ra7 10. Nf3 Ne8 11. 0-0 Nd7 12. Bh6 e5 13. dxe6 fxe6 14. Bxg7 Kxg7 15. Ng5 Qf6 16. f4 h6 17. e5 dxe5 18. Nce4 Qe7 19. Nh3 Bb7 20. Bd3 Bxe4 21. Bxe4 Nd6 22. Rae1 Nxe4 23. Rxe4 exf4 24. Nxf4 e5 25. Qe2 Qd6 26. Nd3 Rxf1+ 27. Kxf1 Ra8 28. Nxe5 Nxe5 29. Rxe5 Rf8+ 30. Ke1 Rf7 31. Qe3 Qf6 32. Qc3 Kh7 33. Kd1 Qf1+ 34. Re1 0-1

[Event "CZE-chT2"]
[Site "Czech Republic"]
[Date "1999.??.??"]
[Round "?"]
[White "Schmid, Jaroslav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C03"]
[BlackElo "2125"]
[PlyCount "37"]
[EventDate "1999.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nh6 4. c3 Be7 5. Bd3 f5 6. Qh5+ Nf7 7. exf5 exf5 8. Nh3 g6 9. Qe2 0-0 10. 0-0 Re8 11. Nf3 Bf6 12. Qc2 Nc6 13. Kh1 Be6 14. Be3 Qd7 15. Nhg5 Kg7 16. Rae1 Nd6 17. Nxe6+ Rxe6 18. Qc1 Ne4 19. Re2 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Kolin, Julius"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2205"]
[PlyCount "49"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. g3 0-0 6. Bg2 c5 7. 0-0 Nc6 8. cxd5 Nxd5 9. d4 b6 10. dxc5 Bxc5 11. Nc3 Bb7 12. Nxd5 exd5 13. Qd3 Re8 14. Rfd1 f6 15. e3 Qd6 16. a3 a5 17. Qxd5+ Qxd5 18. Rxd5 Rad8 19. Rad1 Rxd5 20. Rxd5 Bc8 21. Nd2 Ne7 22. Rd3 Ba6 23. Rd7 Bb5 24. Rc7 Rd8 25. Bd4 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Peltan, Zdenek"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "116"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 Nf6 6. Ngf3 Be7 7. 0-0 0-0 8. c3 Rb8 9. e5 Nd7 10. d4 cxd4 11. cxd4 f6 12. exf6 Bxf6 13. Nb3 Re8 14. Bf4 Ra8 15. Re1 Nf8 16. Ne5 Nxe5 17. Bxe5 Ng6 18. Bxf6 gxf6 19. h4 b6 20. Re3 Bd7 21. Qe2 Rc8 22. Re1 Rc4 23. Bxd5 exd5 24. Rxe8+ Bxe8 25. Qxe8+ Qxe8 26. Rxe8+ Kf7 27. Ra8 a5 28. Kf1 a4 29. Nd2 Rxd4 30. Ke2 Ne5 31. Ra7+ Kg6 32. b3 axb3 33. axb3 b5 34. Rb7 Rb4 35. Kd1 Nd3 36. h5+ Kh6 37. f3 Nc5 38. Rb6 Nxb3 39. Rxf6+ Kg7 40. Rf5 Rd4 41. Kc2 Nxd2 42. Kc3 Nxf3 43. Rxf3 Rg4 44. Rd3 Kf6 45. Rxd5 Rxg3+ 46. Kd4 Rg5 47. Rd7 Rxh5 48. Rb7 Rg5 49. Ke4 Kg6 50. Kf4 Rf5+ 51. Kg4 h5+ 52. Kh4 Rc5 53. Rb6+ Kf7 54. Rh6 Ke7 55. Kg3 Rf5 56. Kh4 Kd7 57. Rg6 Kc7 58. Re6 b4 0-1

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Belaska, Premysl"]
[Result "0-1"]
[ECO "E81"]
[BlackElo "2265"]
[PlyCount "80"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 c6 7. Qd2 a6 8. Bd3 Nbd7 9. Nge2 b5 10. g4 e5 11. d5 b4 12. Nd1 cxd5 13. cxd5 Nc5 14. Bc2 a5 15. Ng3 Ba6 16. Nf2 Qb6 17. h4 Rfc8 18. h5 Nfd7 19. Be3 Qb5 20. g5 b3 21. axb3 Nxb3 22. Bxb3 Qxb3 23. Ra3 Qc4 24. hxg6 hxg6 25. Rxa5 Nc5 26. Bxc5 Rxc5 27. Rxc5 Qxc5 28. Nd1 Rb8 29. Ne2 Rb3 30. Nec3 Rb4 31. Qf2 Rd4 32. Rh2 Qb4 33. Qg3 Rd3 34. Qh3 Qc4 35. Qh7+ Kf8 36. Qh3 Kg8 37. Qh7+ Kf8 38. Qh3 Qd4 39. Rf2 Kg8 40. Qd7 Rd2 0-1

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Gdovin, Jan"]
[Result "0-1"]
[ECO "C18"]
[BlackElo "2240"]
[PlyCount "68"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 a5 10. Bd2 Nbc6 11. Nxc7+ Qxc7 12. b5 Nb8 13. Nxd4 Nd7 14. Bd3 Nb6 15. a4 Nc4 16. Qe2 Bd7 17. 0-0 Nf5 18. Nxf5 exf5 19. Bc1 Rc8 20. Qh5 0-0 21. Rf3 Qb6+ 22. Kh1 Rfe8 23. c3 d4 24. cxd4 Qxd4 25. Rb1 Be6 26. Rg3 Qf2 27. Rf3 Qe1+ 28. Rf1 Qc3 29. Qe2 Red8 30. Rd1 Rd7 31. Bxc4 Bxc4 32. Qe1 Bb3 33. Rxb3 Rxd1 34. Qxd1 Qxb3 0-1

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Kukacka, Martin"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2060"]
[PlyCount "94"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. e3 Bg4 4. Be2 e6 5. h3 Bxf3 6. Bxf3 f5 7. a3 Nf6 8. b4 a6 9. Bb2 Be7 10. Nd2 0-0 11. c4 Qd7 12. cxd5 exd5 13. Qb3 Kh8 14. Be2 Nd8 15. Nf3 c6 16. Ne5 Qc7 17. g4 Ne4 18. Nf3 Ne6 19. Rf1 f4 20. Bc1 fxe3 21. Bxe3 a5 22. Rb1 axb4 23. axb4 Ra7 24. Nd2 Nxd2 25. Kxd2 Rfa8 26. Rfc1 Ra3 27. Qc2 Ra2 28. Rb2 Bxb4+ 29. Kd1 Rxb2 30. Qxb2 Ba3 31. Ra1 Qa5 32. Qb3 b5 33. f4 Qa4 34. Kc2 b4 35. Qxa4 Rxa4 36. f5 Nc7 37. Bf4 Ra7 38. Re1 Kg8 39. Bd3 Kf7 40. g5 b3+ 41. Kxb3 Be7 42. h4 Ra3+ 43. Kc2 Nb5 44. Be5 Ra2+ 45. Kb3 Ra3+ 46. Kc2 Ra2+ 47. Kb3 Ra3+ 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Meszaros, Ludek"]
[Result "1/2-1/2"]
[ECO "A75"]
[BlackElo "2290"]
[PlyCount "59"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bf4 a6 8. a4 Bg7 9. Be2 0-0 10. Nf3 Bg4 11. 0-0 Qe7 12. Nd2 Bxe2 13. Qxe2 Nh5 14. Be3 Nd7 15. a5 Rae8 16. Rfe1 f5 17. exf5 Rxf5 18. g4 Bxc3 19. gxf5 Bxd2 20. Qxd2 Ne5 21. Qe2 Qh4 22. f4 Ng4 23. Qd2 gxf5 24. Bxc5 Rxe1+ 25. Rxe1 dxc5 26. d6 Ngf6 27. d7 Qg4+ 28. Kf1 Qh3+ 29. Kg1 Qg4+ 30. Kf1 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Petras, Jan"]
[Black "Petras, Milan"]
[Result "1/2-1/2"]
[ECO "A40"]
[BlackElo "2210"]
[PlyCount "68"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nh6 5. Nc3 0-0 6. e4 b6 7. f3 f5 8. 0-0-0 Bb7 9. d5 Na6 10. Bd3 Kh8 11. Nh3 fxe4 12. Bxe4 Nc5 13. Bc2 Qh4 14. b3 Nf5 15. Ng5 e5 16. Nxh7 Qxh7 17. g4 Nd4 18. Bxh7 Ncxb3+ 19. axb3 Nxb3+ 20. Kc2 Nxd2 21. Kxd2 Kxh7 22. Ke3 Rf4 23. Ne4 Raf8 24. Rhf1 Kg8 25. h4 a5 26. h5 Ba6 27. Rc1 c6 28. dxc6 dxc6 29. Rf2 b5 30. cxb5 cxb5 31. Rc5 a4 32. Rxe5 Bb7 33. Ng5 Bc6 34. Rc5 R4f6 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Richtr, Zdenek"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2265"]
[PlyCount "86"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. a4 a6 7. a5 Ba7 8. Nc3 Nf6 9. Be2 d6 10. 0-0 Be6 11. Ra4 h6 12. Nd5 Bxd5 13. exd5 Ne5 14. Rb4 Qc8 15. Be3 Bxe3 16. fxe3 Nfd7 17. Bg4 Rb8 18. Rbf4 Qd8 19. Nd4 g6 20. Bxd7+ Qxd7 21. Nf3 0-0 22. Nxe5 dxe5 23. Rf6 Rbd8 24. e4 Qe7 25. Qf3 Kg7 26. Qc3 Rd6 27. Qb4 Qd7 28. R6f3 b5 29. b3 c6 30. c4 cxd5 31. cxd5 f6 32. Rc3 Rd8 33. Rfc1 Qa7+ 34. Kh1 R8d7 35. h3 Qd4 36. Qxd4 exd4 37. Rd3 f5 38. Rxd4 fxe4 39. Rxe4 Rxd5 40. Rc6 R5d6 41. Re6 Rxe6 42. Rxe6 Rd3 43. Rxa6 Rxb3 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Trmal, Jaroslav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "A90"]
[WhiteElo "2255"]
[PlyCount "56"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 d5 5. 0-0 Bd6 6. c4 b6 7. Nc3 c6 8. Ne5 Bb7 9. cxd5 exd5 10. Qc2 Ne4 11. Nxe4 fxe4 12. f3 exf3 13. Rxf3 Bxe5 14. dxe5 Qe7 15. Qf5 g6 16. Qf6 Qxf6 17. exf6 Kf7 18. Bh6 Nd7 19. Bh3 Nc5 20. b4 Ne4 21. Rc1 Bc8 22. Bg2 Bd7 23. Re3 Rhe8 24. Bxe4 Rxe4 25. Rxe4 dxe4 26. Rd1 Be6 27. Rd6 Kxf6 28. Rxc6 Rc8 1/2-1/2

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Vorisek, Jaroslav"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "E02"]
[WhiteElo "2235"]
[PlyCount "43"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Be7 6. Qa4+ Nbd7 7. 0-0 a6 8. Qxc4 Rb8 9. Bf4 Nd5 10. Bd2 b5 11. Qb3 c5 12. e4 c4 13. Qd1 Nb4 14. Bf4 Rb6 15. Ne1 Nf6 16. Nc3 0-0 17. a3 Nc6 18. d5 exd5 19. e5 Ng4 20. Nxd5 Ngxe5 21. Qe2 Ng6 22. Bc7 1-0

[Event "CZE-chT1c 9697"]
[Site "Czech Republic"]
[Date "1997.??.??"]
[Round "?"]
[White "Zigo, Viktor"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C98"]
[WhiteElo "2285"]
[PlyCount "140"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. h3 0-0 11. d4 Qc7 12. Nbd2 Nc6 13. d5 Nd8 14. a4 Rb8 15. axb5 axb5 16. Nf1 Ne8 17. Ng3 g6 18. b4 Ng7 19. Bb2 f6 20. Qe2 Nf7 21. Ra5 Bd7 22. Rea1 Rfc8 23. Bd3 c4 24. Bc2 Rb7 25. Nh2 Bd8 26. Bc1 Rcb8 27. h4 Qc8 28. Ra6 h5 29. Be3 Bb6 30. Bxb6 Rxb6 31. Ra7 R6b7 32. R7a5 Qd8 33. Nhf1 Rc7 34. Ne3 Rcc8 35. Qf3 Ne8 36. Ne2 Nh6 37. Qg3 Kh7 38. f4 Ng4 39. f5 Qb6 40. Nd4 exd4 41. Ra6 Qd8 42. fxg6+ Kg8 43. cxd4 Ra8 44. Bd1 Rxa6 45. Rxa6 Ra8 46. Rxa8 Qxa8 47. Nxg4 hxg4 48. Bxg4 f5 49. Qf2 Nf6 50. Bxf5 Bxf5 51. Qxf5 Qa1+ 52. Kh2 Qxd4 53. Qe6+ Kg7 54. Qf7+ Kh6 55. Qf8+ Kxg6 56. Qxd6 Qxe4 57. h5+ Kg5 58. h6 Qh4+ 59. Kg1 Qd4+ 60. Kf1 Kxh6 61. Qc6 c3 62. d6 Ne4 63. d7+ Kg7 64. Qxe4 Qxe4 65. d8Q c2 66. Qc7+ Kf6 67. Qd8+ Ke5 68. Qc7+ Kd4 69. Qd7+ Kc3 70. Qg7+ Qd4 0-1

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "5"]
[White "Babula, Milan"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C27"]
[PlyCount "51"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nb5 g6 7. Qf3 f5 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6 11. d3 Bb7 12. Nxb6 axb6 13. Qf3 Nd4 14. Qh3 e4 15. Be3 exd3 16. 0-0-0 Nxc2 17. Bxb6+ Kc8 18. Qxd3 Bh6+ 19. Kb1 Na3+ 20. Ka1 Ndb5 21. Nf3 Be4 22. Rhe1 Re8 23. Rxe4 fxe4 24. Qd5 Nc7 25. Bxc7 exf3 26. Bd6 1-0

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "3"]
[White "Dobrovolsky, Ladislav"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C70"]
[PlyCount "49"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. 0-0 d6 7. d4 exd4 8. Nxd4 Bb7 9. Bd2 Nxb3 10. axb3 Ne7 11. Re1 Qd7 12. c4 c5 13. Nf5 bxc4 14. bxc4 Nxf5 15. exf5+ Be7 16. Qe2 Kf8 17. Nc3 h5 18. Nd5 Bf6 19. Nxf6 gxf6 20. Bf4 d5 21. Ra3 h4 22. Rb3 Bc6 23. Qg4 dxc4 24. Rd1 Re8 25. Re3 1-0

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "7"]
[White "Kraner, Petr"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C77"]
[PlyCount "108"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. Nbd2 d6 8. Nf1 Na5 9. Ne3 0-0 10. 0-0 Nxb3 11. axb3 Re8 12. Bd2 Bf8 13. c4 Bd7 14. Qc2 c6 15. Rfc1 Qb8 16. Ba5 Qb7 17. b4 Rac8 18. Nd2 g6 19. Nb3 Be6 20. Nf1 bxc4 21. dxc4 c5 22. bxc5 Nxe4 23. cxd6 Nxd6 24. Nbd2 Nxc4 25. Nxc4 Bxc4 26. Bc3 Bg7 27. Ne3 Bb5 28. Qb3 h6 29. Rd1 Rcd8 30. h3 Kh7 31. Ng4 Rxd1+ 32. Rxd1 f5 33. Ne3 f4 34. Nd5 Rd8 35. Nb4 Rxd1+ 36. Qxd1 Qe4 37. Qd6 a5 38. Nd5 Qf5 39. Qb8 Bc4 40. Ne7 Qg5 41. Qc8 Bf7 42. Qb7 f3 43. g4 h5 44. Nf5 gxf5 45. Qxf7 fxg4 46. h4 Qc1+ 47. Kh2 Qf4+ 48. Qxf4 exf4 49. Bxa5 Bxb2 50. Bc7 Bc1 51. Kg1 Kg6 52. Kh2 Kf5 53. Bd6 Bb2 54. Kg1 Bf6 0-1

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "2"]
[White "Petras, Jan"]
[Black "Gross, Stefan"]
[Result "1-0"]
[ECO "E74"]
[PlyCount "91"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Bf4 0-0 7. Be2 a6 8. a4 Qa5 9. Bd2 e6 10. Nf3 exd5 11. exd5 Bg4 12. 0-0 Qc7 13. h3 Bxf3 14. Bxf3 Nbd7 15. Qc2 Rae8 16. Rfe1 Nb6 17. b3 Nbd7 18. Rxe8 Rxe8 19. Re1 Re5 20. Be2 Ne8 21. f4 Re7 22. Bf3 Bd4+ 23. Kf1 Ndf6 24. Qd3 Ng7 25. g4 Rxe1+ 26. Kxe1 Qe7+ 27. Qe2 Qd8 28. Kd1 h5 29. Kc2 hxg4 30. hxg4 Nfe8 31. Qe1 Nc7 32. Ne2 Bf6 33. g5 Be7 34. Bg4 f5 35. gxf6 Bxf6 36. Ng3 b5 37. Ba5 bxc4 38. bxc4 Nge8 39. Be6+ Kg7 40. Qg1 Qb8 41. Nh5+ Kh6 42. Nxf6 Nxe6 43. dxe6 Nxf6 44. Qg5+ Kh7 45. Qxf6 Qa8 46. Bc3 1-0

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "4"]
[White "Petras, Jan"]
[Black "Modr, Bretislav"]
[Result "1/2-1/2"]
[ECO "D86"]
[PlyCount "35"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Be3 Nc6 9. Ne2 cxd4 10. cxd4 b5 11. Bxb5 Qa5+ 12. Nc3 Qxc3+ 13. Bd2 Qxd4 14. Bxc6+ Bd7 15. Bxa8 Qxa1 16. Qxa1 Bxa1 17. 0-0 0-0 18. Rxa1 1/2-1/2

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "11"]
[White "Petras, Jan"]
[Black "Neckar, Lubomir"]
[Result "1-0"]
[ECO "E18"]
[PlyCount "105"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Ne1 Bxg2 10. Nxg2 d5 11. cxd5 exd5 12. Qd3 Nd7 13. Rd1 Nf6 14. Bg5 Ne4 15. Bxe7 Qxe7 16. Nf4 c6 17. Qe3 Qf6 18. f3 Nd6 19. Qf2 Rfe8 20. Rac1 Nf5 21. Rc3 Rac8 22. e3 g5 23. Ng2 Re6 24. e4 dxe4 25. fxe4 Ne7 26. Qxf6 Rxf6 27. d5 Rd6 28. Ne3 f6 29. Rdc1 Kf7 30. g4 Ke8 31. b4 b5 32. Nf5 Nxf5 33. gxf5 Kd7 34. Kf2 Re8 35. dxc6+ Kc7 36. Ke3 Rb8 37. e5 fxe5 38. Ke4 Re8 39. Rd3 Rxd3 40. Kxd3 e4+ 41. Ke3 a6 42. a3 Re5 43. Rc5 Re8 44. Rc2 Re5 45. f6 Re8 46. Rc1 h6 47. Rc2 h5 48. Rc1 g4 49. Kf4 e3 50. Kf5 e2 51. Re1 Kxc6 52. f7 Re3 53. Kg6 1-0

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "13"]
[White "Petras, Jan"]
[Black "Plhal, Petr"]
[Result "1/2-1/2"]
[ECO "C00"]
[PlyCount "28"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 e6 3. Qe2 Be7 4. g3 Nc6 5. Bg2 d5 6. d3 Nf6 7. 0-0 0-0 8. c3 Qc7 9. e5 Nd7 10. Bf4 b5 11. Nbd2 Ba6 12. a4 b4 13. c4 dxc4 14. dxc4 Rad8 1/2-1/2

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "8"]
[White "Petras, Jan"]
[Black "Ruckschloss, Karol"]
[Result "1-0"]
[ECO "A42"]
[PlyCount "145"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nd7 3. c4 e5 4. Nc3 g6 5. e4 Bg7 6. Be2 Ne7 7. 0-0 0-0 8. Be3 h6 9. dxe5 dxe5 10. Qc2 c6 11. Rad1 Qc7 12. Qd2 Kh7 13. Nh4 Nf6 14. Bc5 g5 15. Nf3 Ne8 16. Qd8 Bf6 17. Qxc7 Nxc7 18. Nxe5 Ne6 19. Bxe7 Bxe7 20. Rfe1 f6 21. Nf3 Nf4 22. Nd4 Bc5 23. Bf1 Bg4 24. Rd2 Rad8 25. Nb3 Rxd2 26. Nxd2 Bd4 27. Nb3 Be5 28. f3 Bc8 29. Rd1 Ne6 30. g3 Rd8 31. Rxd8 Nxd8 32. Kf2 Kg6 33. Ke3 b6 34. Nd4 c5 35. Nde2 Nc6 36. f4 Bd4+ 37. Kd2 Bf2 38. Nd1 Bd4 39. Nxd4 Nxd4 40. Be2 Kf7 41. Nf2 Ba6 42. b3 Bb7 43. Bd1 Kg6 44. Ke3 Kf7 45. Nd3 Nc6 46. a3 a5 47. Nb2 gxf4+ 48. gxf4 f5 49. Na4 fxe4 50. Nxb6 Nd4 51. Nd5 Ke6 52. Kxe4 Kd6 53. a4 Ne6 54. Kf5 Bxd5 55. cxd5 Kxd5 56. Bf3+ Kd6 57. Ke4 c4 58. bxc4 Nc5+ 59. Kf5 Nxa4 60. Kg6 Nc5 61. Bd1 a4 62. Bc2 a3 63. Bb1 Ke7 64. f5 Ne4 65. Kg7 h5 66. h4 Nf6 67. c5 Ne4 68. c6 Nf6 69. Ba2 Ne8+ 70. Kg6 Nd6 71. f6+ Kd8 72. Kxh5 Nf5 73. c7+ 1-0

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "6"]
[White "Petras, Jan"]
[Black "Votruba, Pavel"]
[Result "0-1"]
[ECO "E18"]
[PlyCount "44"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 d5 8. cxd5 exd5 9. Bg5 Nbd7 10. Rc1 c6 11. Qc2 Re8 12. Rfd1 h6 13. Bxf6 Nxf6 14. Ne5 Nd7 15. e4 Nxe5 16. exd5 Nc4 17. dxc6 Ba6 18. c7 Qxc7 19. Bxa8 Rxa8 20. Qe4 Qd8 21. Nd5 Bd6 22. b3 Na5 0-1

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "9"]
[White "Prandstetter, Eduard"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "B45"]
[PlyCount "57"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bc5 7. Bf4 0-0 8. Be2 Ne8 9. 0-0 a6 10. Nd6 Qc7 11. e5 f6 12. Nce4 fxe5 13. Nxc8 Rxf4 14. Nxc5 Rxc8 15. c3 Rf7 16. Qd2 Nd8 17. Ne4 d5 18. Ng5 Re7 19. f3 Nf7 20. Bd3 Nf6 21. Nxf7 Rxf7 22. Rae1 Rcf8 23. Qe2 e4 24. fxe4 dxe4 25. Bxe4 Nxe4 26. Qxe4 Qb6+ 27. Qd4 Qxb2 28. Rxf7 Rxf7 29. a4 1/2-1/2

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "12"]
[White "Privara, Igor"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C80"]
[PlyCount "35"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. Nxe5 Nxe5 9. dxe5 c6 10. c3 Bc5 11. Nd2 Bf5 12. a4 Nxd2 13. Bxd2 0-0 14. Qf3 Be4 15. Qg3 Qe7 16. Rfe1 Rfe8 17. Be3 Bf5 18. h3 1/2-1/2

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "10"]
[White "Skacel, Bohuslav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C49"]
[PlyCount "29"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 h6 10. Bh4 Nd8 11. d4 Ne6 12. Bg3 Ng5 13. Nd2 Bg4 14. f3 Bc8 15. Bf1 1/2-1/2

[Event "Harrachov"]
[Site "Harrachov"]
[Date "1970.??.??"]
[Round "1"]
[White "Vokoun, Jan"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C70"]
[PlyCount "92"]
[EventDate "1970.08.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. d4 exd4 7. Qxd4 Bb7 8. Bd2 Nxb3 9. axb3 Qf6 10. 0-0 Qxd4 11. Nxd4 Nf6 12. e5 Ne4 13. Be3 0-0-0 14. b4 d6 15. exd6 Bxd6 16. f3 Nf6 17. c3 Nd5 18. Bg5 f6 19. Bd2 Rhe8 20. Na3 Nf4 21. Bxf4 Bxf4 22. Nac2 g6 23. Rfe1 Bd2 24. Rxe8 Rxe8 25. Kf2 Kb8 26. g3 Bh6 27. Nb3 Ka7 28. h4 Kb6 29. f4 Bf8 30. Rd1 Bc8 31. Ne3 c6 32. Nc2 Bg4 33. Re1 Rxe1 34. Kxe1 Bd6 35. Kf2 Bd1 36. Ncd4 Bg4 37. Nd2 Bd7 38. Ne4 Be7 39. Nb3 Be6 40. Nec5 Bg4 41. Ke3 Bd1 42. Kd4 Bc2 43. Nd7+ Kc7 44. Ndc5 Kb6 45. Nd7+ Kc7 46. Ndc5 Kb6 1/2-1/2

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1969.01.05"]
[Round "11"]
[White "Petras, Jan"]
[Black "Hlousek, Zdenek"]
[Result "1/2-1/2"]
[ECO "D14"]
[PlyCount "42"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bg3 0-0 11. 0-0 Bxg3 12. hxg3 Qb6 13. Qb5 Qxb5 14. Nxb5 Rfd8 15. Rfd1 Rac8 16. Rac1 Ne4 17. Nc3 Nxc3 18. Rxc3 Ne7 19. Rdc1 Rxc3 20. Rxc3 Rc8 21. Rxc8+ Nxc8 1/2-1/2

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1969.01.04"]
[Round "10"]
[White "Neckar, Lubomir"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C69"]
[PlyCount "63"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 f6 6. d4 exd4 7. Nxd4 c5 8. Nb3 Qxd1 9. Rxd1 Bd6 10. Na5 b5 11. c4 Ne7 12. Be3 Rb8 13. Nd2 Be6 14. Rac1 Kf7 15. Ndb3 Rhd8 16. Bxc5 Bxc5 17. Nxc5 Bxc4 18. Rxd8 Rxd8 19. Nxc4 bxc4 20. f3 a5 21. Nb7 Rd2 22. Nxa5 Rxb2 23. a3 Ra2 24. Nxc4 Nc6 25. Ne3 Rxa3 26. Nd5 Nd4 27. Rxc7+ Kf8 28. Nf4 Ra1+ 29. Kf2 Ra2+ 30. Ke3 Nc2+ 31. Kd2 Nb4+ 32. Kc3 1-0

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1969.01.03"]
[Round "9"]
[White "Petras, Jan"]
[Black "Pesout, Jan"]
[Result "1-0"]
[ECO "D52"]
[PlyCount "103"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 c6 6. Qc2 Nbd7 7. e3 Qa5 8. Bxf6 Nxf6 9. Nd2 Bd7 10. Bd3 Rc8 11. a3 c5 12. Nb3 Bxc3+ 13. bxc3 Qa4 14. Nxc5 Qxc2 15. Bxc2 b6 16. Nxd7 Kxd7 17. cxd5 Nxd5 18. Kd2 Nxc3 19. Rhc1 Nd5 20. Ba4+ Ke7 21. e4 Nf6 22. f3 Rhd8 23. Ke3 Nd7 24. Bb5 Nb8 25. a4 a6 26. Bd3 Rc6 27. Rxc6 Nxc6 28. Rc1 Nb4 29. Rc7+ Rd7 30. Rc4 Nxd3 31. Kxd3 g6 32. h4 f5 33. g4 fxg4 34. fxg4 h6 35. e5 Rb7 36. Rc6 Kd7 37. Rd6+ Ke7 38. d5 exd5 39. Rxg6 Kf8 40. Rxh6 b5 41. a5 Rc7 42. Rxa6 Rc4 43. Rd6 Rxg4 44. Rxd5 b4 45. Rd4 Rg3+ 46. Kc2 Ra3 47. Rd5 Ke7 48. Rb5 Ke6 49. h5 Rh3 50. h6 Kf5 51. a6 Rxh6 52. e6+ 1-0

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1969.01.02"]
[Round "8"]
[White "Babula, Milan"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "81"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d3 Nf6 6. d4 d5 7. Bd3 Bd6 8. 0-0 0-0 9. Nc3 Bg4 10. h3 Bxf3 11. Qxf3 Nc6 12. Ne2 Re8 13. Bg5 Be7 14. c3 Ne4 15. Be3 Bg5 16. Nf4 Bxf4 17. Qxf4 Qd7 18. Qh4 f5 19. Rae1 Ne7 20. Bc1 Ng6 21. Qh5 Re7 22. Re2 Rf8 23. Rfe1 Qd6 24. Bc2 Nf4 25. Bxf4 Qxf4 26. Qf3 Qd6 27. Qd3 Rd7 28. Qd1 Qg6 29. Bxe4 fxe4 30. Re3 Rdf7 31. Rg3 Qd6 32. Qg4 g6 33. Re2 Kh8 34. Qg5 Rf5 35. Qe3 Qf6 36. b3 Kg7 37. c4 c6 38. cxd5 cxd5 39. Qd2 Rc8 40. Rc3 Rc6 41. b4 1/2-1/2

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1969.01.01"]
[Round "7"]
[White "Petras, Jan"]
[Black "Novak, Ivan"]
[Result "1-0"]
[ECO "D41"]
[PlyCount "65"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 Nf6 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 0-0 11. Bc4 Nc6 12. 0-0 b6 13. Rac1 Na5 14. Bd3 Bb7 15. Rfd1 Qe7 16. Qf4 Qf6 17. Qe3 Qh6 18. Ng5 Rfd8 19. Rc7 Rf8 20. Rdc1 Rac8 21. e5 g6 22. Be4 Rxc7 23. Rxc7 Rc8 24. Rxb7 Nxb7 25. Bxb7 Rc2 26. a3 Ra2 27. g3 Qf8 28. d5 Rxa3 29. Qf4 Qe7 30. Bc6 h6 31. Ne4 Kg7 32. d6 Qd8 33. d7 1-0

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.31"]
[Round "6"]
[White "Modr, Bretislav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C49"]
[PlyCount "40"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 Bxc3 7. bxc3 Qe7 8. Bg5 h6 9. Bh4 Nd8 10. a4 d6 11. Nd2 Ne6 12. Bxf6 Qxf6 13. Qf3 Qxf3 14. Nxf3 Ng5 15. Nxg5 hxg5 16. Bc4 Re8 17. a5 Be6 18. Bxe6 Rxe6 19. c4 Ree8 20. Rfb1 Reb8 1/2-1/2

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.30"]
[Round "5"]
[White "Petras, Jan"]
[Black "Banas, Jan"]
[Result "1/2-1/2"]
[ECO "E62"]
[PlyCount "95"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 c6 7. 0-0 a6 8. a4 a5 9. e4 Na6 10. Re1 Bg4 11. h3 Bxf3 12. Bxf3 Nd7 13. Bg5 Nb4 14. Qd2 Qe8 15. Rad1 e5 16. d5 cxd5 17. Nxd5 Nxd5 18. Qxd5 Nb6 19. Qxd6 Nxc4 20. Qc7 Qxa4 21. Qxb7 Rab8 22. Qd5 Nxb2 23. Rb1 Qb3 24. Qxb3 Rxb3 25. Bd1 Rbb8 26. Be2 Rb7 27. Be7 Rxe7 28. Rxb2 Ra7 29. Bc4 Rc8 30. Bd5 Bf8 31. Reb1 Bb4 32. Rb3 Kg7 33. Kg2 Rc2 34. R1b2 Rac7 35. Kf1 Rxb2 36. Rxb2 Kf6 37. h4 Ke7 38. Ke2 f6 39. Bg8 Kf8 40. Bb3 Ke7 41. Rc2 Rxc2+ 42. Bxc2 Kd6 43. g4 Kc5 44. Kd3 Be1 45. Bb3 Bxf2 46. Bg8 Bxh4 47. Bxh7 Kb4 48. Bxg6 1/2-1/2

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.29"]
[Round "4"]
[White "Petras, Jan"]
[Black "Votruba, Pavel"]
[Result "0-1"]
[ECO "E33"]
[PlyCount "32"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. a3 Bxc3+ 7. Qxc3 Qe7 8. b3 e5 9. dxe5 dxe5 10. Bb2 Ne4 11. Qe3 Bf5 12. g3 Qc5 13. Bg2 Qa5+ 14. Kf1 0-0-0 15. g4 Bg6 16. Nh4 Qd2 0-1

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.28"]
[Round "3"]
[White "Prandstetter, Eduard"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C35"]
[PlyCount "46"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Nf6 5. e5 Ng4 6. Nc3 d6 7. exd6 Bxd6 8. Qe2+ Qe7 9. Qxe7+ Bxe7 10. Nd5 Bd6 11. d4 0-0 12. 0-0 Be6 13. Ng5 Nc6 14. Nxe6 fxe6 15. Ne7+ Bxe7 16. Bxe6+ Kh8 17. Bxg4 Nxd4 18. Bxf4 Nxc2 19. Rac1 Nb4 20. Rce1 Rae8 21. Bxc7 Bc5+ 22. Kh1 Rxe1 23. Rxe1 Nd3 0-1

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.27"]
[Round "2"]
[White "Petras, Jan"]
[Black "Hausner, Ivan"]
[Result "1-0"]
[ECO "E67"]
[PlyCount "91"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 0-0 6. Bg2 c5 7. 0-0 Nbd7 8. e4 a6 9. Re1 cxd4 10. Nxd4 Rb8 11. h3 Qc7 12. Qe2 Nc5 13. Be3 Bd7 14. Rac1 Ne6 15. Nd5 Nxd5 16. cxd5 Nxd4 17. Rxc7 Nxe2+ 18. Rxe2 Rfd8 19. Ba7 Rbc8 20. Rxb7 Rc1+ 21. Kh2 Bb5 22. Rd2 Bh6 23. f4 Rd7 24. Rb8+ Kg7 25. Bd4+ f6 26. h4 Rdc7 27. Bc3 Kf7 28. Rf2 Bc4 29. Bh3 Bf8 30. Be6+ Kg7 31. a4 Bd3 32. Rb4 Rc4 33. Rxc4 Bxc4 34. Kg2 h5 35. Kf3 Kh7 36. Rg2 Bh6 37. Ke3 Rd1 38. Rd2 Rg1 39. Kf2 Rc1 40. Rd4 Rc2+ 41. Ke3 Bf1 42. Rd1 Bc4 43. Rd4 Bf1 44. Rb4 Rg2 45. Rb8 Re2+ 46. Kf3 1-0

[Event "CSR-ch U26"]
[Site "Cihak"]
[Date "1968.12.26"]
[Round "1"]
[White "Fiala, Jiri"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C90"]
[PlyCount "152"]
[EventDate "1968.12.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. 0-0 d6 8. c3 Na5 9. Bc2 c5 10. Re1 Qc7 11. Bg5 h6 12. Bh4 g5 13. Bg3 Bg4 14. Nbd2 Nc6 15. Qb1 Nd7 16. a3 a5 17. Bd1 Nb6 18. Be2 a4 19. d4 Bxf3 20. Nxf3 c4 21. dxe5 dxe5 22. Qc2 Bd6 23. Rad1 0-0-0 24. h3 f6 25. Nh2 h5 26. Nf1 Bc5 27. Bh2 h4 28. Bg4+ Kb7 29. Kh1 Rxd1 30. Rxd1 Rd8 31. Bg1 Qe7 32. Rxd8 Qxd8 33. Qd2 Qd3 34. Qxd3 cxd3 35. Be6 Na5 36. f3 Kc6 37. Bxc5 Kxc5 38. Ne3 Nbc4 39. Nd1 Nb3 40. Kg1 Nc1 41. Kf2 Ne2 42. Bf7 Nf4 43. Bg8 d2 44. Bf7 Nd6 45. Bg8 f5 46. exf5 Nxf5 47. Bf7 Nd6 48. Bg8 Nc4 49. Bf7 Nd5 50. Ke2 Kd6 51. Bg8 Kc6 52. Bf7 Nf4+ 53. Kf2 Nd6 54. Bg8 Kc5 55. Ba2 Nc4 56. Kf1 Nd3 57. b4+ axb3 58. Bxb3 Nxa3 59. Bg8 Nf4 60. Kf2 Nc4 61. Bf7 Kb6 62. Bxc4 bxc4 63. Ke3 Nxg2+ 64. Kxd2 Kb5 65. Nf2 Nf4 66. Ke3 Ka4 67. Ke4 Kb3 68. Kf5 Kxc3 69. Kxg5 Kd4 70. Kxh4 c3 71. Ne4 c2 72. Nd2 Ke3 73. Nb3 Kxf3 74. Kg5 Ne6+ 75. Kf6 Nc5 76. Nc1 e4 0-1

[Event "CSR-chT"]
[Site "Harrachov"]
[Date "1968.??.??"]
[Round "1"]
[White "Kupka, Slavoj"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "D90"]
[PlyCount "90"]
[EventDate "1968.09.29"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 g6 4. cxd5 cxd5 5. Nf3 Nf6 6. Bf4 Bg7 7. e3 0-0 8. Be2 Nc6 9. 0-0 Bf5 10. Ne5 Nxe5 11. Bxe5 Ne4 12. Bxg7 Nxc3 13. bxc3 Kxg7 14. Qb3 Qd7 15. c4 dxc4 16. Bxc4 Rac8 17. a4 Rc7 18. Bd3 Bxd3 19. Qxd3 Rfc8 20. Qb5 Qd6 21. Rab1 b6 22. a5 bxa5 23. Qxa5 Qe6 24. h3 Rd7 25. Rb2 Qe4 26. Ra1 f6 27. Rb5 Rdc7 28. Qa3 h5 29. Rc5 Rxc5 30. dxc5 Qe5 31. Rc1 Rc7 32. Qa5 g5 33. Rc4 Rb7 34. Rc1 Rc7 35. Qb4 Kf7 36. Qc4+ Kg7 37. c6 Qd6 38. Qc3 Qd5 39. Qa3 Kf7 40. Qc3 Kg7 41. Qc4 h4 42. Qa4 a5 43. Rc4 Qd2 44. Qa1 a4 45. Rd4 Qc2 1/2-1/2

[Event "WchT Students 14th final A"]
[Site "Harrachov"]
[Date "1967.07.24"]
[Round "5.4"]
[White "Petras, Jan"]
[Black "Zara, Dan"]
[Result "0-1"]
[ECO "C10"]
[PlyCount "82"]
[EventDate "1967.07.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia"]
[BlackTeam "Romania"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "ROU"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. Qe2 Be7 8. a3 Ngf6 9. c4 0-0 10. Nxf6+ Bxf6 11. Be3 Qe7 12. Qc2 g6 13. 0-0-0 Bxf3 14. gxf3 c5 15. dxc5 Nxc5 16. Be2 Rac8 17. Kb1 a6 18. Rc1 Rfe8 19. b3 b5 20. Ka2 bxc4 21. Bxc4 Nxb3 22. Bxb3 Rxc2+ 23. Rxc2 Rb8 24. a4 Qd7 25. Rhc1 Qb7 26. Rb1 Qxf3 27. Bh6 Rd8 28. Re1 Qh5 29. Bf4 Kg7 30. Rc7 Qf3 31. Be3 Kg8 32. Rec1 Be5 33. R7c6 Bxh2 34. Bg5 Rd6 35. Rxd6 Bxd6 36. Bh6 Qb7 37. Rd1 Qc7 38. Rc1 Qb7 39. Bd1 Bf8 40. Bf3 Qxf3 41. Rc8 Qa3+ 0-1

[Event "WchT Students 14th Group2"]
[Site "Harrachov"]
[Date "1967.07.16"]
[Round "1.4"]
[White "Petras, Jan"]
[Black "Georgiev, Jeko"]
[Result "1/2-1/2"]
[ECO "B45"]
[PlyCount "50"]
[EventDate "1967.07.16"]
[EventType "team-tourn"]
[EventRounds "3"]
[EventCountry "CZE"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia"]
[BlackTeam "Bulgaria"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "BUL"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 c5 10. c4 Nb6 11. Bd3 Bb7 12. Qe2 Be7 13. b3 0-0-0 14. a4 f5 15. a5 fxe4 16. axb6 axb6 17. Bxe4 Bxe4 18. Qxe4 Qb7 19. Qxb7+ Kxb7 20. Bb2 Ra8 21. Ke2 Rhf8 22. Rxa8 Rxa8 23. Ra1 Rf8 24. g3 g6 25. h4 h5 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.14"]
[Round "17"]
[White "Hora, Vratislav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C28"]
[PlyCount "23"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Bb4 5. Bg5 h6 6. Bxf6 Bxc3+ 7. bxc3 Qxf6 8. Ne2 d6 9. 0-0 g5 10. d4 Bd7 11. Qd3 Na5 12. Bb3 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.13"]
[Round "16"]
[White "Petras, Jan"]
[Black "Vesely, Jiri"]
[Result "1/2-1/2"]
[ECO "D13"]
[PlyCount "27"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. cxd5 cxd5 5. Nf3 Nc6 6. Bf4 e6 7. e3 Be7 8. Bd3 Nh5 9. Rc1 Nxf4 10. exf4 Bf6 11. Bb5 Bd7 12. 0-0 0-0 13. Ne5 Rc8 14. Qd2 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.11"]
[Round "15"]
[White "Seifert, Milan"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "B30"]
[PlyCount "39"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. 0-0 a6 5. Bxc6 Qxc6 6. Nc3 e6 7. Re1 Qc7 8. d4 cxd4 9. Nxd4 b5 10. Bg5 Bb4 11. Qg4 Bxc3 12. bxc3 h5 13. Qf3 Bb7 14. a4 bxa4 15. Rxa4 f6 16. Bd2 f5 17. Qd3 fxe4 18. Rxe4 Bxe4 19. Qxe4 Rb8 20. Nb3 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.09"]
[Round "14"]
[White "Petras, Jan"]
[Black "Marsalek, Josef"]
[Result "1/2-1/2"]
[ECO "E69"]
[PlyCount "65"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d6 5. 0-0 0-0 6. c4 Nbd7 7. Nc3 e5 8. e4 c6 9. Re1 a6 10. a4 a5 11. h3 exd4 12. Nxd4 Nc5 13. Be3 Re8 14. Qc2 Qe7 15. Rad1 Be6 16. b3 Rad8 17. Nxe6 Nxe6 18. Bb6 Ra8 19. Qd2 Nd7 20. Be3 Ndc5 21. Qc2 Qf6 22. Ne2 Qb2 23. Qxb2 Bxb2 24. Rb1 Bf6 25. Red1 Red8 26. f4 Rab8 27. Bd2 Nd4 28. Nxd4 Bxd4+ 29. Kf1 b6 30. Be1 Bf6 31. g4 g5 32. fxg5 Be5 33. Ke2 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.07"]
[Round "13"]
[White "Cibulka, Vladimir"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "116"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nf3 d6 7. Nc3 dxe5 8. dxe5 e6 9. Bd3 Bb4 10. Bd2 Nxc3 11. Bxc3 Bxc3+ 12. bxc3 Qa5 13. 0-0 Nxe5 14. Nxe5 Qxe5 15. Re1 Qc7 16. Qh5 Bd7 17. Rab1 g6 18. Qh6 0-0-0 19. Qe3 Bc6 20. Bf1 Kb8 21. Rb4 Rd7 22. c4 Qd6 23. c5 Qc7 24. Reb1 Rhd8 25. Qb3 Rd4 26. a3 Qd7 27. Qg3+ Ka8 28. h3 Rd1 29. Rxd1 Qxd1 30. Qc7 Qd7 31. Qf4 Qe7 32. Rd4 Rxd4 33. Qxd4 e5 34. Qc3 f6 35. Be2 a6 36. Kh2 e4 37. Qd4 Ka7 38. Bc4 h6 39. Be2 f5 40. Bc4 g5 41. Be2 f4 42. Kg1 Qd7 43. Qb4 f3 44. gxf3 exf3 45. Bf1 Ka8 46. Kh2 Qd5 47. a4 Qd1 48. Qb6 Qd4 49. Kg1 g4 50. hxg4 Qxg4+ 51. Kh2 Qh4+ 52. Kg1 Qg5+ 53. Kh2 Bxa4 54. Qd6 Bc6 55. Bh3 Qh4 56. Qc7 Qxf2+ 57. Kh1 Qxc5 58. Kh2 f2 0-1

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.06"]
[Round "12"]
[White "Petras, Jan"]
[Black "Smejkal, Jan"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "60"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. exd6 e6 8. Nc3 Bxd6 9. Nxd5 exd5 10. Be2 0-0 11. 0-0 Qb6 12. b3 Bg4 13. Bb2 Rfe8 14. Bc3 Re6 15. Qd2 Rae8 16. Rfe1 Bb4 17. h3 Bxc3 18. Qxc3 Bxf3 19. Bxf3 Nxd4 20. Bg4 Nb5 21. Rxe6 fxe6 22. Qe1 g6 23. Rd1 h5 24. Bf3 Rf8 25. Qe5 Rf5 26. Qg3 Kg7 27. Rc1 Qd6 28. Qh4 Qf4 29. Qe7+ Rf7 30. Qc5 Rc7 0-1

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.05"]
[Round "11"]
[White "Alster, Ladislav"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "D58"]
[PlyCount "99"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 h6 5. Bh4 Bb7 6. Nc3 Be7 7. Qc2 d5 8. Bxf6 Bxf6 9. cxd5 exd5 10. e3 0-0 11. 0-0-0 Nd7 12. h4 g6 13. h5 g5 14. Qf5 Bg7 15. Nxd5 Bxd5 16. Qxd5 c5 17. Kb1 cxd4 18. Nxd4 Nc5 19. Qf5 Qe7 20. Bd3 Nxd3 21. Rxd3 Rac8 22. Rd2 Rc5 23. Qd3 Rfc8 24. Nf5 Qc7 25. a3 Bf8 26. g4 a5 27. Ka2 b5 28. Qd7 Qe5 29. Rhd1 R8c7 30. Qd4 Qe6+ 31. Kb1 b4 32. axb4 axb4 33. Nd6 Ra5 34. Rc2 Rca7 35. Rc6 Ra1+ 36. Kc2 Rxd1 37. Kxd1 Rd7 38. Qxb4 Bxd6 39. Qa4 Bb4+ 40. Kc1 Bd2+ 41. Kb1 Qd5 42. Rxh6 Rd8 43. Rc6 Qd3+ 44. Ka2 Rb8 45. Rc5 Kh7 46. Qc2 Ra8+ 47. Kb1 Qxc2+ 48. Kxc2 Be1 49. Rf5 Ra7 50. Kd1 1-0

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.04"]
[Round "10"]
[White "Petras, Jan"]
[Black "Machacek, Petr"]
[Result "1/2-1/2"]
[ECO "D14"]
[PlyCount "32"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bb5 Bb4 9. 0-0 Bxc3 10. Bxc6+ bxc6 11. bxc3 0-0 12. Bg5 Bg4 13. h3 Bxf3 14. Qxf3 h6 15. Bxf6 Qxf6 16. Qxf6 gxf6 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.02"]
[Round "9"]
[White "Augustin, Josef"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C81"]
[PlyCount "67"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[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 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 0-0 11. c4 bxc4 12. Bxc4 dxc4 13. Rxd8 Rfxd8 14. Nc3 Nxc3 15. bxc3 h6 16. Bf4 Rd3 17. Ne1 Rd5 18. Rd1 Rad8 19. Rxd5 Rxd5 20. h3 Na7 21. Kh2 Nb5 22. a4 Nxc3 23. Qxc4 Rc5 24. Qxa6 Rc4 25. Bg3 Nxa4 26. Qa8+ Kh7 27. f4 Nb6 28. Qe8 Bb4 29. Nf3 Bd5 30. f5 Rc2 31. Nh4 Nc4 32. e6 Ne3 33. exf7 Nxg2 34. Qg8# 1-0

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.11.01"]
[Round "8"]
[White "Petras, Jan"]
[Black "Pithart, Frantisek"]
[Result "1/2-1/2"]
[ECO "E19"]
[PlyCount "81"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 d6 10. Qc2 f5 11. d5 e5 12. e4 Bc8 13. Ne1 Bg5 14. Bxg5 Qxg5 15. f4 exf4 16. Rxf4 Nd7 17. Nf3 Qh6 18. exf5 Ne5 19. Re1 g5 20. fxg6 Nxg6 21. Rxf8+ Qxf8 22. Nd4 Bd7 23. Be4 Qf6 24. Qf2 Qxf2+ 25. Kxf2 Rf8+ 26. Kg2 Ne5 27. b3 a5 28. a4 Kg7 29. h3 h5 30. Ne2 Kh6 31. Nf4 Rf6 32. Bc2 h4 33. Rf1 hxg3 34. Kxg3 Rf8 35. Kh2 Rf6 36. Rf2 Kg5 37. Kg3 Rh6 38. Rh2 Rf6 39. Rf2 Rh6 40. Be4 Rh4 41. Bc2 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.31"]
[Round "7"]
[White "Fichtl, Jiri"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C70"]
[PlyCount "82"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[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 b5 5. Bb3 Na5 6. 0-0 d6 7. d4 exd4 8. Qxd4 Bb7 9. Qc3 Nxb3 10. Qxb3 Be7 11. a4 Bxe4 12. axb5 axb5 13. Rxa8 Qxa8 14. Qxb5+ Qc6 15. Qb8+ Kd7 16. Re1 Qb7 17. Qxb7 Bxb7 18. Ng5 Ke8 19. Ne4 h6 20. Nbc3 Kd7 21. Be3 f5 22. Ng3 g6 23. f3 Rh7 24. Rd1 Rf7 25. Nge2 Bf6 26. Bd4 Bd8 27. Nf4 g5 28. Nd3 Kc8 29. Re1 Re7 30. Ra1 c5 31. Bf2 Re6 32. Nb5 Ne7 33. b4 cxb4 34. Nxb4 d5 35. Nd4 Rf6 36. Re1 Kd7 37. Nd3 Bb6 38. Ne5+ Kc8 39. Nd3 Kd7 40. Ne5+ Kc8 41. Nd3 Kd7 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.30"]
[Round "6"]
[White "Petras, Jan"]
[Black "Florian, Jaromir"]
[Result "0-1"]
[ECO "E44"]
[PlyCount "68"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[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 b6 5. Nge2 Bb7 6. a3 Be7 7. Nf4 d6 8. d5 e5 9. Nd3 c6 10. e4 b5 11. dxc6 Nxc6 12. cxb5 Nd4 13. f3 0-0 14. Nb4 d5 15. Bd3 dxe4 16. fxe4 Bc5 17. Be3 Qd6 18. h3 Rad8 19. 0-0 Nf5 20. Rxf5 Bxe3+ 21. Kh2 Bc5 22. Rf3 Nh5 23. Nbd5 f5 24. b4 Bd4 25. Qb3 Kh8 26. Raf1 Nf6 27. Bb1 fxe4 28. Bxe4 Nxd5 29. Nxd5 Rxf3 30. Rxf3 h6 31. Nc3 Bxc3 32. Bxb7 e4+ 33. Rg3 Be5 34. Bxe4 Rc8 0-1

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.28"]
[Round "5"]
[White "Petras, Jan"]
[Black "Janata, Michael"]
[Result "1-0"]
[ECO "E33"]
[PlyCount "53"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[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. Qc2 Nc6 5. Nf3 0-0 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 d5 9. e3 Bd7 10. Bd3 f5 11. b3 a5 12. Bb2 Be8 13. h4 Bh5 14. Ng1 Qf6 15. f3 Qh6 16. Bc1 Qg6 17. g4 fxg4 18. fxe4 g3 19. exd5 g2 20. Rh3 Rf1+ 21. Kd2 Qf6 22. Kc3 Rxg1 23. dxc6 Bf3 24. Qf2 Rd1 25. Rxf3 Rxd3+ 26. Kc2 Qg6 27. Rg3 1-0

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.27"]
[Round "4"]
[White "Opocensky, Karel"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "72"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. Nc3 Qb6 5. Nd5 Qd8 6. Nf3 e6 7. Nc3 cxd4 8. Qxd4 Nc6 9. Qh4 f5 10. Qxd8+ Kxd8 11. e4 fxe4 12. Nxe4 d5 13. Neg5 Ke7 14. c3 f6 15. Nh3 e5 16. g3 Be6 17. Bg2 Bh6 18. 0-0 Rhd8 19. Rfe1 Rac8 20. Nh4 f5 21. Nf4 Bxf4 22. gxf4 e4 23. Bh3 Kf6 24. f3 Na5 25. Kf2 Nc4 26. Re2 Rg8 27. fxe4 fxe4 28. Bxe6 Kxe6 29. b3 Nd6 30. Re3 Rg4 31. Ng2 d4 32. Rg3 Rxg3 33. hxg3 Rxc3 34. g4 Rf3+ 35. Kg1 d3 36. Rd1 Kd5 0-1

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.26"]
[Round "3"]
[White "Petras, Jan"]
[Black "Novak, Ervin"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "24"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Be7 6. Bf4 d6 7. Nxd4 0-0 8. Nb5 Nxd5 9. exd5 Ne5 10. Be2 Ng6 11. Bg3 Bf6 12. Nc3 Be5 1/2-1/2

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.25"]
[Round "2"]
[White "Blatny, Frantisek"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C70"]
[PlyCount "79"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[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 b5 5. Bb3 Na5 6. Qe2 d6 7. c3 Nxb3 8. axb3 Bb7 9. c4 b4 10. d4 exd4 11. Nxd4 Qe7 12. f3 g6 13. Nc2 a5 14. Ne3 Bg7 15. Qd3 Nf6 16. 0-0 0-0 17. Nd2 c6 18. Rd1 Nd7 19. Ndf1 Nc5 20. Qc2 h5 21. Ng3 Rfd8 22. Bd2 Be5 23. Ne2 Kf8 24. Be1 Kg8 25. Bf2 Qf6 26. Rd2 a4 27. bxa4 b3 28. Qc1 Rxa4 29. Rxa4 Nxa4 30. Nd1 Re8 31. Be3 Qe6 32. Nf4 Bxf4 33. Bxf4 Rd8 34. h4 Ba6 35. Ne3 Rd7 36. Qa1 Nc5 37. Qd1 Bxc4 38. Rxd6 Rxd6 39. Qxd6 Qxd6 40. Bxd6 1-0

[Event "CSR-ch34"]
[Site "Pardubice"]
[Date "1965.10.24"]
[Round "1"]
[White "Petras, Jan"]
[Black "Jankovec, Ivan"]
[Result "1/2-1/2"]
[ECO "D42"]
[PlyCount "40"]
[EventDate "1965.10.24"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 Be7 8. 0-0 Ncb4 9. Bb1 0-0 10. a3 Nc6 11. Nxd5 exd5 12. b3 Bg4 13. Bb2 f5 14. Bd3 Rc8 15. Be2 Bf6 16. Rc1 cxd4 17. Nxd4 Bxe2 18. Qxe2 Nxd4 19. Bxd4 Bxd4 20. exd4 Qd6 1/2-1/2

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.18"]
[Round "9"]
[White "Petras, Jan"]
[Black "Plachetka, Jan"]
[Result "0-1"]
[ECO "E63"]
[PlyCount "36"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 Nc6 7. Nc3 a6 8. h3 Rb8 9. e4 b5 10. Qe2 e5 11. cxb5 Nxd4 12. Nxd4 exd4 13. Nd5 axb5 14. Bg5 c6 15. Nxf6+ Bxf6 16. Bxf6 Qxf6 17. Rac1 c5 18. e5 Qe7 0-1

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.16"]
[Round "7"]
[White "Bellin, Jana"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "A74"]
[PlyCount "51"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 g6 6. e4 d6 7. Nf3 Bg7 8. Be2 0-0 9. 0-0 a6 10. a4 Qe7 11. Qc2 Nbd7 12. Nd2 Rb8 13. f4 Ne8 14. Nc4 Bd4+ 15. Kh1 Ng7 16. Bd2 f5 17. Rae1 Bxc3 18. Bxc3 fxe4 19. Bg4 Nf6 20. Bxc8 Rbxc8 21. Bxf6 Qxf6 22. Rxe4 Rce8 23. Rfe1 Qxf4 24. h3 Rxe4 25. Qxe4 Qg3 26. Qe3 1/2-1/2

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.15"]
[Round "6"]
[White "Petras, Jan"]
[Black "Janata, Michael"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "107"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Be2 0-0 7. 0-0 Na6 8. Nd2 Nc7 9. a4 Bd7 10. Nc4 b5 11. axb5 Nxb5 12. Nxb5 Bxb5 13. Na5 a6 14. Re1 Qb6 15. Bc4 Nd7 16. f4 Rfe8 17. c3 Qc7 18. Be3 Nb6 19. Bxb5 axb5 20. Nc6 Rxa1 21. Qxa1 e6 22. Qa7 Qxa7 23. Nxa7 exd5 24. Nxb5 Rxe4 25. Nxd6 Re6 26. Kf2 Na4 27. Nb7 Nxb2 28. Nxc5 Bxc3 29. Re2 Rc6 30. Nb3 Rc4 31. Kf3 Kg7 32. g4 Rb4 33. Nd4 Bxd4 34. Bxd4+ Rxd4 35. Rxb2 Rd3+ 36. Kf2 h5 37. g5 Kf8 38. Re2 Rh3 39. Kg2 Rd3 40. Kf2 Ra3 41. Re5 d4 42. Re4 Ra2+ 43. Kf3 d3 44. Ke3 Rxh2 45. Kxd3 Ra2 46. Ke3 Ra3+ 47. Kf2 Ra6 48. Kf3 f6 49. gxf6 Kf7 50. Re5 Ra3+ 51. Kg2 Kxf6 52. Ra5 h4 53. Rc5 Rg3+ 54. Kf2 1/2-1/2

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.14"]
[Round "5"]
[White "Tichy, Vladimir"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "A26"]
[PlyCount "85"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. e4 e5 5. Bg2 0-0 6. Nge2 Nc6 7. 0-0 d6 8. h3 Be6 9. d3 Qd7 10. Kh2 Ne8 11. Be3 h6 12. f4 f5 13. exf5 gxf5 14. Qd2 Kh7 15. b3 Bg8 16. Rac1 Nf6 17. d4 e4 18. d5 Nb4 19. Nxe4 Nbxd5 20. Nxf6+ Nxf6 21. Bd4 Rae8 22. Nc3 Kh8 23. Rfe1 b6 24. Rcd1 Rxe1 25. Rxe1 Re8 26. Re3 Rxe3 27. Qxe3 c5 28. Bxf6 Bxf6 29. Bd5 Qg7 30. Bxg8 Bxc3 31. Bd5 Ba1 32. h4 Qd7 33. Qe6 Qxe6 34. Bxe6 Kg7 35. Bxf5 Kf6 36. Be4 Ke6 37. g4 Bc3 38. g5 hxg5 39. hxg5 Bd2 40. Kg3 Kf7 41. Kg4 Bc1 42. f5 Bd2 43. Bd5+ 1-0

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.13"]
[Round "4"]
[White "Petras, Jan"]
[Black "Novak, Ervin"]
[Result "0-1"]
[ECO "A30"]
[PlyCount "62"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. 0-0 g6 6. c4 Bg7 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Re1 Qc8 10. d5 d6 11. Bf1 Bf5 12. e4 Bg4 13. Bg2 0-0 14. Qc2 Na6 15. Bd2 e5 16. dxe6 fxe6 17. Nh4 Bd4 18. Be3 g5 19. Qd2 gxh4 20. Bxd4 cxd4 21. Qg5+ Kh8 22. Qxg4 hxg3 23. hxg3 e5 24. Qh5 Qxc4 25. Bf1 d3 26. Rad1 Nc5 27. Re3 Qd4 28. Bxd3 Qxb2 29. Re2 Qb4 30. f4 Nxd3 31. Rh2 Qd4+ 0-1

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.12"]
[Round "3"]
[White "Smejkal, Jan"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "101"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. h4 h5 9. Qf3 Nxh4 10. Qh3 Ng6 11. Bd3 Ne7 12. Qf3 Ba6 13. Bxa6 Nxa6 14. Rxh5 Kd7 15. Qxf7 Rxh5 16. Qxh5 Qh8 17. Qxh8 Rxh8 18. Nh3 Nb8 19. Bg5 Nf5 20. Ke2 Nc6 21. Nf4 Rh7 22. g4 Nfe7 23. Nh5 Ke8 24. Rg1 Na5 25. Rg3 Nc4 26. Nf4 Kd7 27. Rf3 Nxa3 28. Bxe7 Kxe7 29. Ng6+ Kd8 30. Nf8 Rh4 31. Nxe6+ Kd7 32. Nxg7 Rxg4 33. Rf7+ Kc6 34. e6 Nc4 35. e7 Re4+ 36. Kf1 Nd6 37. f3 Re3 38. Kf2 Rxc3 39. Rf6 Rxc2+ 40. Ke3 Kd7 41. Rxd6+ Kxe7 42. Nf5+ Kf7 43. Rxd5 a5 44. Kd3 Rf2 45. Ke4 Re2+ 46. Kf4 a4 47. Rd7+ Kf8 48. Rxc7 a3 49. Ra7 a2 50. d5 Ke8 51. Nd4 1-0

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.11"]
[Round "2"]
[White "Petras, Jan"]
[Black "Ferenc, Peter"]
[Result "1/2-1/2"]
[ECO "E65"]
[PlyCount "110"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 c5 6. d5 d6 7. Nc3 a6 8. 0-0 Nbd7 9. h3 Rb8 10. a4 b6 11. e4 Qc7 12. Qe2 Ne8 13. Bg5 Ne5 14. Ne1 f6 15. Be3 Bd7 16. f4 Nf7 17. Nd3 e5 18. dxe6 Bxe6 19. Ne1 Qc8 20. g4 Nc7 21. f5 Bd7 22. Nd3 g5 23. Rfd1 b5 24. axb5 axb5 25. b3 b4 26. Nb1 Bc6 27. Nd2 Qb7 28. Bf2 Rfe8 29. Bg3 Bf8 30. Nf2 Ra8 31. Nf1 Rxa1 32. Rxa1 Ra8 33. Qb2 Rxa1 34. Qxa1 Ne5 35. Bxe5 dxe5 36. Qa5 Bd6 37. Ne3 Qa6 38. Qxa6 Nxa6 39. Kf1 Kf7 40. Ke2 Nc7 41. Kd2 Ke7 42. Bf1 Bb7 43. Bd3 Ba6 44. Nfd1 Bb7 45. Kc2 Na6 46. Nd5+ Kf7 47. Nb2 Nb8 48. Be2 Nd7 49. Kd3 Bc6 50. Na4 Bb7 51. Ke3 Bc6 52. Kd3 Bb7 53. Nab6 Nxb6 54. Nxb6 Ke8 55. Nd5 Kf7 1/2-1/2

[Event "Harrachov U26"]
[Site "Harrachov"]
[Date "1965.04.10"]
[Round "1"]
[White "Seifert, Milan"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "107"]
[EventDate "1965.04.10"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. g3 Ba6 9. Bxa6 Nxa6 10. h4 h5 11. Qe2 Nb8 12. Nh3 Nc6 13. 0-0 Na5 14. Bg5 Qd7 15. f4 Nc6 16. f5 exf5 17. Rae1 Nf8 18. Qf3 Ne7 19. Bxe7 Kxe7 20. Qxf5 Qxf5 21. Rxf5 Ne6 22. Ref1 Raf8 23. Ng5 Nxg5 24. hxg5 c6 25. Kg2 b5 26. Kh3 a5 27. Kh4 a4 28. Kh3 Ke6 29. Kh4 Ke7 30. R5f4 Ke8 31. R1f2 Ke7 32. Kh3 Ke8 33. Kh4 Ke7 34. Kh3 Ke8 35. R2f3 Ke7 36. Kg2 Ke6 37. Kh2 Ke7 38. Kg2 Ke6 39. Kh2 Ke7 40. Kh3 Ke8 41. Kh4 Ke7 42. Rf2 Ke6 43. g6 f6 44. exf6 Rxf6 45. Re2+ Kd6 46. Rxf6+ gxf6 47. g4 hxg4+ 48. Kxg4 c5 49. Kf5 cxd4 50. cxd4 Rh3 51. Rg2 Rf3+ 52. Kg4 Rc3 53. g7 Rc8 54. Kf5 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "4"]
[White "Cibulka, Vladimir"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C28"]
[PlyCount "36"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 d6 4. d3 Nc6 5. Nge2 Be7 6. 0-0 Na5 7. Bb3 Be6 8. f4 exf4 9. Nxf4 Bxb3 10. axb3 Nc6 11. h3 a6 12. Nh5 Nxh5 13. Qxh5 0-0 14. Be3 Ne5 15. d4 Ng6 16. Rae1 Qd7 17. Bg5 Bxg5 18. Qxg5 Rae8 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "8"]
[White "Drapal, Robert"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C70"]
[PlyCount "84"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. 0-0 d6 7. d4 exd4 8. Nxd4 Nf6 9. Bd5 Bb7 10. Bd2 c6 11. Bxa5 Qxa5 12. Bxc6+ Bxc6 13. Nxc6 Qc7 14. Nb4 Be7 15. Nc3 0-0 16. Nbd5 Qb7 17. Rb1 Rfe8 18. f3 Rac8 19. Nxf6+ Bxf6 20. Nd5 Be5 21. c3 g6 22. Qd2 Bg7 23. Rbd1 Rc5 24. Qf4 Re6 25. g4 a5 26. g5 b4 27. cxb4 Rc2 28. Rf2 Rxf2 29. Kxf2 axb4 30. Qe3 Qd7 31. b3 Re8 32. Nxb4 Qh3 33. Kg1 Rc8 34. Qe2 Rc3 35. Nd3 Bd4+ 36. Nf2 Bc5 37. Kh1 Qh5 38. Rd3 Rc1+ 39. Rd1 Rxd1+ 40. Nxd1 Qxg5 41. Nf2 Bd4 42. a4 h5 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "6"]
[White "Goeth, Jiri"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "D55"]
[PlyCount "22"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 Be7 6. Qc2 d5 7. e3 0-0 8. Rc1 Nbd7 9. cxd5 exd5 10. Bd3 h6 11. Bh4 Ne4 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "2"]
[White "Hruska, Tomas"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "E26"]
[PlyCount "150"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b6 7. Ne2 Ba6 8. Ng3 Qc7 9. Bb2 0-0 10. Rc1 Nc6 11. Bd3 Na5 12. Qe2 Ne8 13. e4 Rc8 14. 0-0 cxd4 15. cxd4 Bxc4 16. d5 f5 17. exf5 exd5 18. Nh5 d6 19. f6 Nxf6 20. Nxf6+ gxf6 21. Rc3 Rce8 22. Qh5 Re5 23. Bf5 d4 24. Rg3+ Kh8 25. Qh6 Qf7 26. Bg6 Qg7 27. Qxg7+ Kxg7 28. Bd3+ Kf7 29. Bxc4+ Nxc4 30. Bxd4 Re4 31. Ba1 Rfe8 32. Rd3 Re2 33. g3 Nd2 34. Rd1 Re1+ 35. Rxe1 Rxe1+ 36. Kg2 Rxa1 37. Rxd2 Rxa3 38. Rxd6 b5 39. Rd7+ Kg6 40. h4 a5 41. h5+ Kh6 42. g4 f5 43. gxf5 Kxh5 44. Rg7 Rc3 45. f6 Rc5 46. Ra7 Kg6 47. f7 Rf5 48. Rxa5 Kxf7 49. Ra7+ Kg6 50. Rb7 h5 51. f4 Rc5 52. Kf3 Kf5 53. Rf7+ Ke6 54. Rb7 Kd6 55. Ke4 Kc6 56. Rb8 Kc7 57. Rh8 b4 58. Kd4 Rf5 59. Kc4 Rxf4+ 60. Kc5 h4 61. Rh7+ Kc8 62. Kc6 Kd8 63. Kd6 Ke8 64. Ke6 Kf8 65. Ke5 Kg8 66. Rb7 Rc4 67. Kf6 h3 68. Rb8+ Kh7 69. Rb7+ Kh6 70. Rb8 Kh5 71. Kf5 Kh4 72. Rh8+ Kg3 73. Rg8+ Kf3 74. Rh8 Rc5+ 75. Ke6 Kg4 0-1

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "14"]
[White "Mojzis, Jaroslav"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "D14"]
[PlyCount "25"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Nf3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bb5 Bd6 9. Bxd6 Qxd6 10. Bd3 Bxd3 11. Qxd3 0-0 12. 0-0 Rfc8 13. Rfc1 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "13"]
[White "Petras, Jan"]
[Black "Fiser, Jiri"]
[Result "1-0"]
[ECO "E66"]
[PlyCount "55"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 a6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Rb1 Bd7 13. Bb2 Qc7 14. Nce4 Nxe4 15. Bxe4 Bxb2 16. Rxb2 bxc4 17. bxc4 Rxb2 18. Qxb2 Rb8 19. Qc3 Rb4 20. a3 Rb8 21. Bc2 e5 22. f4 Nb7 23. fxe5 dxe5 24. Ne4 f5 25. d6 Nxd6 26. Nf6+ Kf7 27. Qxe5 Ne8 28. Qxc7 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "3"]
[White "Petras, Jan"]
[Black "Hora, Vratislav"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "51"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g4 g6 4. Bg2 Bg7 5. d3 d6 6. g5 h5 7. h4 Nd4 8. Nce2 Qb6 9. c3 Nc6 10. Nf4 e6 11. Qc2 Nge7 12. Nge2 e5 13. Nd5 Nxd5 14. exd5 Ne7 15. Ng3 Bg4 16. Be4 0-0-0 17. b4 Kb8 18. Rb1 Bc8 19. Nf1 Nf5 20. Nd2 Qc7 21. Nc4 f6 22. Qa4 Bd7 23. Qa3 Rc8 24. bxc5 Qxc5 25. Qa6 b6 26. Ba3 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "5"]
[White "Petras, Jan"]
[Black "Schuster, Petr"]
[Result "1-0"]
[ECO "B05"]
[PlyCount "79"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6 6. h3 Bxf3 7. Bxf3 dxe5 8. dxe5 e6 9. 0-0 Nd7 10. Qe2 g6 11. c4 N5b6 12. Nc3 Bg7 13. Bf4 Qc7 14. Rfe1 0-0 15. b3 Rfe8 16. Qe3 Nc8 17. Rad1 Ne7 18. g4 Rad8 19. Kg2 g5 20. Bxg5 Nxe5 21. Ne4 Rxd1 22. Bxd1 N5g6 23. Nf6+ Bxf6 24. Bxf6 Qf4 25. Qxf4 Nxf4+ 26. Kg3 Nfg6 27. Bc2 Kf8 28. Rd1 Rb8 29. h4 Ng8 30. Bd4 Ke8 31. h5 Nf8 32. Be5 Rc8 33. Bg7 Rc7 34. Bxf8 Kxf8 35. Bxh7 Nf6 36. Bc2 e5 37. h6 Rd7 38. h7 Kg7 39. Rh1 Rd8 40. g5 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "15"]
[White "Petras, Jan"]
[Black "Sevcak, Frantisek"]
[Result "0-1"]
[ECO "C49"]
[PlyCount "78"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 Bxc3 6. bxc3 0-0 7. Qe2 Re8 8. d3 d5 9. h3 h6 10. Re1 a6 11. Ba4 b5 12. Bb3 Bb7 13. Bxd5 Nxd5 14. exd5 Qxd5 15. Qe4 Qxe4 16. dxe4 f6 17. a4 Na5 18. axb5 axb5 19. Nd2 Bc6 20. f3 Kf7 21. Kf2 Nb7 22. Ba3 Ra4 23. Nb3 Rea8 24. Bb4 Bd7 25. Rad1 Be6 26. Nc5 Nxc5 27. Bxc5 Rc4 28. Be3 Rxc3 29. Rd2 Ra2 30. Rc1 c5 31. Ke2 b4 32. h4 Bc4+ 33. Kf2 Bb5 34. h5 Ba4 35. Ke2 Bxc2 36. Rd7+ Kg8 37. Rd8+ Kh7 38. Rb8 Ba4+ 39. Kf1 Rxc1+ 0-1

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "9"]
[White "Petras, Jan"]
[Black "Sorsak, Jozef Sr"]
[Result "1-0"]
[ECO "B18"]
[PlyCount "85"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Bd6 8. Bc4 Nf6 9. Bb3 Qc7 10. Qf3 Nbd7 11. Bd2 e5 12. Nxg6 hxg6 13. dxe5 Nxe5 14. Qe3 Nfg4 15. Qe2 0-0-0 16. 0-0-0 c5 17. Bd5 c4 18. Bc3 Rhe8 19. Ne4 Bf8 20. Rd4 f5 21. Rhd1 Kb8 22. f4 Rxd5 23. Rxd5 Nc6 24. Be5 Ngxe5 25. fxe5 fxe4 26. Qxe4 b6 27. e6 c3 28. Rd7 cxb2+ 29. Kb1 Qc8 30. Qxg6 Ka8 31. Qe4 Bc5 32. Qd5 Kb8 33. Re1 Re7 34. a4 a5 35. Re4 g6 36. Rc4 Rxd7 37. exd7 Qc7 38. Re4 Ka7 39. Re8 Nd8 40. Kxb2 Kb8 41. g4 Ka7 42. h4 Kb8 43. Qg5 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "11"]
[White "Petras, Jan"]
[Black "Suchanek, Ladislav"]
[Result "1-0"]
[ECO "C46"]
[PlyCount "47"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ 5. Kxf2 Nxe5 6. d4 Qf6+ 7. Kg1 Ng4 8. Qd2 Ne7 9. h3 Nh6 10. g4 d6 11. Rh2 Bxg4 12. hxg4 Nxg4 13. Rg2 h5 14. Nb5 Kf8 15. Qg5 Qf3 16. Qf4 Qd1 17. b3 Ng6 18. Qg3 a6 19. Bb2 h4 20. Qxg4 Qxg4 21. Rxg4 axb5 22. Bxb5 c6 23. Bd3 h3 24. a4 1-0

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "7"]
[White "Petras, Jan"]
[Black "Volf, Jaroslav"]
[Result "0-1"]
[ECO "C79"]
[PlyCount "62"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. 0-0 exd4 8. cxd4 Be7 9. Nc3 b5 10. Bb3 0-0 11. e5 dxe5 12. dxe5 Ne8 13. Bf4 Bf5 14. Qxd8 Rxd8 15. Rad1 Rxd1 16. Bxd1 f6 17. exf6 Bxf6 18. Be2 Nd6 19. Nd1 Nd4 20. Nxd4 Bxd4 21. Bxd6 cxd6 22. a4 bxa4 23. Bxa6 Ra8 24. Bb5 Kf7 25. g3 Ra5 26. Bc4+ Be6 27. Bxe6+ Kxe6 28. Re1+ Kd7 29. Re4 Bxb2 30. Nxb2 a3 31. Nc4 a2 0-1

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "1"]
[White "Petras, Jan"]
[Black "Zajic, Jiri"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "62"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 c5 3. d5 d6 4. e4 g6 5. Nf3 Bg7 6. Be2 0-0 7. Bf4 b5 8. Nxb5 Nxe4 9. 0-0 Bxb2 10. Bh6 a6 11. Rb1 Bg7 12. Bxg7 Kxg7 13. Qd3 Bf5 14. Na3 Nf6 15. Qc3 Kg8 16. Rfd1 Be4 17. Bc4 Nbd7 18. Ng5 Bf5 19. Rb7 h6 20. Nh3 Ne5 21. Qe3 Bc8 22. Rb3 Kg7 23. Be2 Bf5 24. f3 a5 25. g4 Bd7 26. Nf2 Ba4 27. f4 Ned7 28. Rb7 Rb8 29. Rxb8 Nxb8 30. g5 Ng8 31. Qc3+ Kh7 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "16"]
[White "Seifert, Milan"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C70"]
[PlyCount "45"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. 0-0 d6 7. d4 exd4 8. Nxd4 Bb7 9. Nf3 Be7 10. Re1 Nf6 11. Nc3 0-0 12. Nd5 Nxd5 13. exd5 Nxb3 14. axb3 Bf6 15. c3 Qd7 16. Qd3 Qg4 17. c4 bxc4 18. bxc4 Bc8 19. Ra3 Bf5 20. Qe2 h5 21. Nd2 Qxe2 22. Rxe2 a5 23. Nf1 1/2-1/2

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "10"]
[White "Urbanec, Miroslav"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C70"]
[PlyCount "44"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. 0-0 d6 7. Nc3 Bb7 8. Re1 Nf6 9. d4 exd4 10. e5 Nxb3 11. exf6+ Kd7 12. axb3 dxc3 13. Ne5+ Kc8 14. Qg4+ Kb8 15. Nd7+ Ka7 16. Be3+ c5 17. Rad1 Qc8 18. Qg3 gxf6 19. Rxd6 Rg8 20. Qxg8 Bxd6 21. Qxf7 Qc6 22. f3 Rd8 0-1

[Event "CSR Army-ch12"]
[Site "Prague"]
[Date "1965.??.??"]
[Round "12"]
[White "Vavruska, Antonin"]
[Black "Petras, Jan"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "32"]
[EventDate "1965.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Nxe4 6. Qe2 f5 7. Ng5 d3 8. cxd3 Nd4 9. Qh5+ g6 10. Qh4 c6 11. dxe4 cxd5 12. exd5 Qa5+ 13. Bd2 Qa4 14. Qg3 Nc2+ 15. Ke2 Nd4+ 16. Ke1 Nc2+ 1/2-1/2

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "16"]
[White "Blazek, Josef"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C70"]
[PlyCount "93"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5 5. d4 exd4 6. exf5 Nf6 7. 0-0 Be7 8. Bxc6 bxc6 9. Nxd4 0-0 10. Nc3 c5 11. Nde2 d5 12. Ng3 d4 13. Nce2 a5 14. Nf4 Ra6 15. Qe2 Rb6 16. Re1 Re8 17. Qc4+ Kh8 18. b3 Bd6 19. Bd2 Ba6 20. Qf7 Rf8 21. Ne6 Rxf7 22. Nxd8 Rd7 23. Ne6 a4 24. Ne4 axb3 25. axb3 Nxe4 26. Rxe4 h6 27. g4 Bb7 28. Ree1 Bf3 29. Bf4 Rb8 30. h3 h5 31. Kh2 Bd5 32. Bxd6 cxd6 33. Nf4 Bf7 34. Re2 d5 35. Rd1 c4 36. Rxd4 cxb3 37. cxb3 Rxb3 38. Rc2 hxg4 39. hxg4 Rdb7 40. g5 R7b4 41. Rc8+ Bg8 42. Rxb4 Rxb4 43. Nxd5 Re4 44. Kg3 Kh7 45. g6+ Kh8 46. f6 Re6 47. Ne7 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "14"]
[White "Hora, Vratislav"]
[Black "Petras, Jan"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "11"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 Be7 5. dxe5 dxe5 6. Qd5 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "13"]
[White "Petras, Jan"]
[Black "Goeth, Jiri"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "35"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 b6 5. Bg5 Be7 6. cxd5 Nxd5 7. Nxd5 Qxd5 8. Bxe7 Kxe7 9. Rc1 Na6 10. Qd2 c5 11. e3 Rd8 12. Bc4 Qe4 13. 0-0 Bb7 14. Qe2 cxd4 15. Bxa6 d3 16. Rc7+ Kf8 17. Bxd3 Rxd3 18. Rxf7+ 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "15"]
[White "Petras, Jan"]
[Black "Kollar, Jan"]
[Result "1-0"]
[ECO "A53"]
[PlyCount "81"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. d5 c6 6. f3 cxd5 7. cxd5 Be7 8. Be3 0-0 9. Qd2 Ne8 10. Nge2 f5 11. exf5 Rxf5 12. Ng3 Rf8 13. Bd3 Ndf6 14. h4 e4 15. Ngxe4 Nxe4 16. Nxe4 Bf5 17. 0-0-0 a5 18. Kb1 Rb8 19. Ng5 h6 20. Bxf5 Rxf5 21. g4 Re5 22. Ne6 Qd7 23. Bf4 Rxe6 24. dxe6 Qxe6 25. Qd5 Qxd5 26. Rxd5 b5 27. g5 h5 28. Bd2 Nc7 29. Rd3 b4 30. Rc1 Nb5 31. Rd5 Nc3+ 32. Bxc3 bxc3 33. Rxc3 Kf7 34. Re3 a4 35. Ra5 a3 36. Rexa3 Rb7 37. Re3 Kg6 38. f4 Bd8 39. f5+ Kh7 40. Ra8 Rd7 41. Re8 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "6"]
[White "Petras, Jan"]
[Black "Neustupa, Vaclav"]
[Result "1-0"]
[ECO "C12"]
[PlyCount "85"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. Bc1 Nxc3 10. Bd3 Na4 11. h4 Qe7 12. h5 g5 13. Nh3 Nc6 14. Rb1 Bd7 15. f4 gxf4 16. Qxf4 Nb4 17. Rb3 Nxd3+ 18. cxd3 0-0-0 19. Ba3 Qe8 20. 0-0 Rh7 21. Nf2 Qg8 22. Ng4 Rg7 23. Ne3 Re8 24. Qh4 Rg5 25. Kh2 Qh7 26. Rf6 Reg8 27. Rf4 Qg7 28. g4 c5 29. dxc5 Bc6 30. d4 Kd7 31. Kh3 Qh7 32. Qf2 Ke7 33. Bb4 a6 34. Be1 Rc8 35. Qd2 Qg8 36. Bh4 Ke8 37. Bxg5 Qxg5 38. Qf2 Qg7 39. Qh4 Bb5 40. Qf6 Qh7 41. g5 hxg5 42. Qxg5 Kd7 43. Ng4 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "4"]
[White "Petras, Jan"]
[Black "Poisl, Arnost"]
[Result "1-0"]
[ECO "D01"]
[PlyCount "71"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. f3 e6 5. e4 Be7 6. e5 Ng8 7. f4 Bxg5 8. fxg5 Qxg5 9. Qd3 a6 10. Nf3 Qe7 11. Be2 c5 12. 0-0 cxd4 13. Qxd4 Qc5 14. Qxc5 Nxc5 15. Rae1 f5 16. exf6 Nxf6 17. b4 Nce4 18. Nxe4 dxe4 19. Ng5 Ke7 20. Bc4 Rd8 21. c3 b5 22. Bb3 a5 23. bxa5 Rxa5 24. Nxe4 Rd3 25. Nc5 Rxc3 26. Nxe6 Bxe6 27. Rxe6+ Kf8 28. Rb6 Rc7 29. Rf5 Ra8 30. h3 Re8 31. Rbxb5 h6 32. a4 Re1+ 33. Kh2 Rcc1 34. Rb7 Ke8 35. a5 Ne4 36. Ba4+ 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "2"]
[White "Petras, Jan"]
[Black "Seifert, Milan"]
[Result "1/2-1/2"]
[ECO "E81"]
[PlyCount "68"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. f3 d6 6. Bg5 Nbd7 7. Bd3 c5 8. d5 a6 9. Qd2 Re8 10. Nh3 Ne5 11. Be2 Bxh3 12. gxh3 b5 13. cxb5 axb5 14. Nxb5 Qd7 15. 0-0 c4 16. a4 Reb8 17. Kg2 Nh5 18. f4 Nd3 19. Bxd3 cxd3 20. f5 gxf5 21. Qxd3 Bxb2 22. Rae1 f6 23. Bh6 f4 24. Qf3 Qe8 25. Kh1 Kh8 26. Rg1 Qf7 27. Rg4 Rc8 28. Rb1 Rxa4 29. Rh4 Ng7 30. Rg1 Ra1 31. Rxa1 Bxa1 32. Bxf4 Bb2 33. Qb3 Bc1 34. Na7 Rc5 1/2-1/2

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "17"]
[White "Petras, Jan"]
[Black "Szakall, Frantisek"]
[Result "1-0"]
[ECO "D32"]
[PlyCount "49"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nbd7 8. dxc5 Bxc5 9. Bd3 Be7 10. 0-0 h6 11. Bh4 g5 12. Bg3 Rg8 13. Nb5 h5 14. Nfd4 Bg4 15. f3 h4 16. Nc7+ Kf8 17. fxg4 Nc5 18. Be5 Rc8 19. Rc1 Rxc7 20. Bxc7 Qxc7 21. b4 Qe5 22. Nf5 Bd6 23. Nxd6 Qxe3+ 24. Kh1 Nxd3 25. Rc8+ 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "8"]
[White "Petras, Jan"]
[Black "Tulajdan, Vasil"]
[Result "1/2-1/2"]
[ECO "A02"]
[PlyCount "137"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 b6 6. Be2 Bb7 7. 0-0 d6 8. d3 Re8 9. e4 Nbd7 10. c4 e5 11. fxe5 Ng4 12. Qc1 Bh6 13. Qc3 Be3+ 14. Kh1 Ndxe5 15. h3 Nf2+ 16. Kh2 c5 17. Qc2 Nxf3+ 18. Bxf3 Qh4 19. Qc3 Re5 20. Bc1 Qf4+ 21. g3 Qxf3 22. Bxe3 Qxe3 23. Qc2 Nxd3 24. Nc3 Rg5 25. Qg2 Qd4 26. Nb5 Qe5 27. Qf3 Bxe4 28. Qxf7+ Kh8 29. Qf6+ Qxf6 30. Rxf6 Rf5 31. Rxf5 gxf5 32. Nxd6 Nb4 33. g4 Kg7 34. gxf5 Bc2 35. Re1 Rd8 36. Re7+ Kg8 37. Nf7 Rf8 38. Nh6+ Kh8 39. Rxa7 Bxf5 40. a3 Nd3 41. Rb7 Be4 42. Rxb6 Rf2+ 43. Kg3 Rg2+ 44. Kh4 Kg7 45. Ng4 Bg6 46. Rb7+ Bf7 47. b4 Nf4 48. Kg5 Nxh3+ 49. Kh4 Nf4 50. bxc5 Rc2 51. Ne3 Rc3 52. Kg4 Rxe3 53. Kxf4 Rxa3 54. c6 Rc3 55. Ke5 Rxc4 56. c7 Rc6 57. Ra7 h5 58. Kf4 Kf6 59. Ra6 Rxa6 60. c8Q Ra4+ 61. Ke3 Rg4 62. Qh8+ Kg6 63. Qc8 Kg7 64. Qc3+ Kh7 65. Qf6 Kg8 66. Qf5 Rg6 67. Kf4 Kg7 68. Qe5+ Kg8 69. Qxh5 1/2-1/2

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "11"]
[White "Petras, Jan"]
[Black "Volf, Jaroslav"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "55"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. Nc3 Nf6 5. d4 exd4 6. Nxd4 0-0 7. 0-0 Nc6 8. Nxc6 bxc6 9. b3 Ng4 10. Be2 Bf6 11. Bb2 Nxh2 12. Kxh2 Be5+ 13. f4 Qh4+ 14. Kg1 Bxf4 15. Rxf4 Qxf4 16. Qd4 c5 17. Qd3 Re8 18. Rf1 Qe5 19. Qf3 f5 20. Bb5 Rf8 21. Nd1 Qe7 22. Bc6 Rb8 23. Ne3 fxe4 24. Qxf8+ Qxf8 25. Bd5+ Be6 26. Bxe6+ Kh8 27. Rxf8+ Rxf8 28. Nf5 1-0

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "1"]
[White "Rehak, Jan"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "C72"]
[PlyCount "108"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. 0-0 Bg4 6. c3 Qf6 7. d3 Nge7 8. Be3 Bxf3 9. Qxf3 Qxf3 10. gxf3 g5 11. Nd2 h6 12. Rfd1 Bg7 13. Nf1 f5 14. Bxc6+ bxc6 15. d4 f4 16. Bc1 exd4 17. cxd4 Ng6 18. Rd3 Nh4 19. Nd2 Rb8 20. b3 a5 21. Bb2 a4 22. Kf1 Kd7 23. Bc3 axb3 24. Nxb3 Rb6 25. Ke2 Ra8 26. Rd2 Ke7 27. Rc1 Rba6 28. Rcc2 Ra4 29. Ba1 R8a6 30. Bc3 Ng6 31. Nc1 Nf8 32. d5 Bxc3 33. Rxc3 c5 34. Rb2 Nd7 35. Rb7 Ra7 36. Rxa7 Rxa7 37. Kf1 Ne5 38. Kg2 Ra4 39. h4 g4 40. fxg4 f3+ 41. Rxf3 Nxf3 42. Kxf3 Rc4 43. Ne2 Rc2 44. a4 Ra2 45. g5 hxg5 46. hxg5 Rxa4 47. Ng3 Ra3+ 48. Kf4 c4 49. Nf5+ Kf7 50. e5 dxe5+ 51. Kxe5 c3 52. Nd4 Ra4 53. Nc2 Ra2 54. Nb4 Rxf2 0-1

[Event "CSR Army-ch"]
[Site "Prague"]
[Date "1964.??.??"]
[Round "9"]
[White "Sorsak, Jozef Sr"]
[Black "Petras, Jan"]
[Result "0-1"]
[ECO "E30"]
[PlyCount "40"]
[EventDate "1964.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "CSR"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nc6 5. Bg5 h6 6. Bh4 d6 7. Qc2 g5 8. Bg3 g4 9. Nd2 Nxd4 10. Qd3 e5 11. e4 Nd7 12. Na4 a6 13. Rc1 Qg5 14. Nc3 Nc5 15. Qb1 f5 16. h4 gxh3 17. Rxh3 fxe4 18. Bh4 Qf4 19. Bg3 Qf7 20. Rh2 Bf5 0-1

