[Event "IBM Reserve A"]
[Site "Amsterdam"]
[Date "1962.08.17"]
[Round "4"]
[White "De Rooi, Paul"]
[Black "Prahl, Gerard"]
[Result "1-0"]
[ECO "C15"]
[PlyCount "81"]
[EventDate "1962.08.14"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Be7 6. Nxe4 Nf6 7. N2c3 0-0 8. Be3 Nbd7 9. Bd3 b6 10. Qf3 Rb8 11. Qh3 Nxe4 12. Nxe4 f5 13. Nc3 Nf6 14. Ne2 Bd6 15. Bg5 Qe8 16. Bxf6 Rxf6 17. f4 Bb7 18. Rg1 Rh6 19. Qg3 c5 20. 0-0-0 Rc8 21. c3 b5 22. h3 Bd5 23. Kd2 a5 24. Rc1 c4 25. Bc2 b4 26. axb4 axb4 27. cxb4 Qb5 28. Nc3 Qxb4 29. Qe3 Rh4 30. g4 g5 31. Rcf1 fxg4 32. f5 Bf4 33. Rxf4 gxf4 34. Qxf4 h6 35. f6 Kf7 36. Qg3 Rxh3 37. Qxg4 Rh2+ 38. Kd1 Rg2 39. Rxg2 Bxg2 40. Qg7+ Ke8 41. f7+ 1-0

[Event "Warsaw Legion Team-ch"]
[Site "Warsaw"]
[Date "1959.06.27"]
[Round "4.6"]
[White "Marszalek, Rafal"]
[Black "Prahl, Gerard"]
[Result "1/2-1/2"]
[ECO "B45"]
[PlyCount "41"]
[EventDate "1959.06.23"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "POL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Warsaw Legion"]
[BlackTeam "Amsterdam CC"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 Bb4 7. Nxc6 dxc6 8. Qxd8+ Kxd8 9. Bf3 e5 10. Bg5 Be6 11. 0-0 Ke7 12. a3 Bxc3 13. bxc3 h6 14. Be3 b6 15. a4 Nd7 16. Be2 a5 17. Rfb1 Rhb8 18. Rb2 Nc5 19. f3 Kd6 20. Kf2 Kc7 21. Ke1 1/2-1/2

[Event "Warsaw Legion Team-ch"]
[Site "Warsaw"]
[Date "1959.06.26"]
[Round "3.4"]
[White "Prahl, Gerard"]
[Black "Olejarczyk, Bogdan"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "75"]
[EventDate "1959.06.23"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "POL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam CC"]
[BlackTeam "Warsaw Maraton"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 c6 5. e3 Bd6 6. Bg3 Bxg3 7. hxg3 Nbd7 8. Nf3 Qe7 9. Qc2 h6 10. cxd5 exd5 11. Bd3 c5 12. b3 0-0 13. Rd1 cxd4 14. Nxd4 Nc5 15. Be2 Bd7 16. Bf3 Rac8 17. Nxd5 Nxd5 18. Bxd5 Na4 19. Qg6 Bb5 20. Qxg7+ Kxg7 21. Nf5+ Kf6 22. Nxe7 Kxe7 23. bxa4 Bxa4 24. Rb1 b5 25. Rxh6 Rc5 26. e4 a5 27. Rc6 Rc8 28. Rxc8 Rxc8 29. Kd2 Rc2+ 30. Ke3 b4 31. Rh1 Bd7 32. Rd1 a4 33. Rd2 Rxd2 34. Kxd2 Be6 35. Bxe6 fxe6 36. Kd3 Kd6 37. Kc4 Ke5 38. f3 1-0

[Event "Warsaw Legion Team-ch"]
[Site "Warsaw"]
[Date "1959.06.25"]
[Round "2.5"]
[White "Prahl, Gerard"]
[Black "Zinn, Lothar"]
[Result "0-1"]
[ECO "D31"]
[PlyCount "68"]
[EventDate "1959.06.23"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "POL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam CC"]
[BlackTeam "Lipsk Rotation"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "DDR"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 Qb6 8. Qc2 a5 9. axb5 cxb5 10. b3 Bxc3 11. Qxc3 b4 12. Qxc4 Ba6 13. Qc2 Nc6 14. Rc1 Nge7 15. Bxa6 Rxa6 16. Qc5 Qxc5 17. Rxc5 a4 18. bxa4 Rxa4 19. Ke2 Kd7 20. Rb5 Rha8 21. e4 R8a5 22. Rxa5 Rxa5 23. Kd3 f5 24. exf5 Nxf5 25. Re1 Ra3+ 26. Ke4 Nd6+ 27. Kf4 Nc4 28. Rb1 Rxf3+ 29. gxf3 Nxd2 30. Rb2 Nc4 31. Rb1 Kd6 32. Rg1 b3 33. Rxg7 b2 34. Rb7 Nxd4 0-1

[Event "Warsaw Legion Team-ch"]
[Site "Warsaw"]
[Date "1959.06.24"]
[Round "1.6"]
[White "Prahl, Gerard"]
[Black "Ostojic, Predrag"]
[Result "1-0"]
[ECO "E85"]
[PlyCount "79"]
[EventDate "1959.06.23"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "POL"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam CC"]
[BlackTeam "Belgrade Zemun"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "YUG"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Nd5 Nxd5 10. cxd5 c6 11. Bc4 b5 12. Bb3 Bb7 13. Rc1 cxd5 14. Rc7 Rd7 15. Rxb7 Rxb7 16. Bxd5 Rc7 17. Bxa8 Rc2 18. Ne2 Rxb2 19. Bd5 Na6 20. Bc1 Rb1 21. 0-0 Bf8 22. Be3 Rb2 23. Nc1 Nc5 24. f4 exf4 25. Bxf4 Ne6 26. Nd3 Re2 27. Bc1 Bg7 28. Nf4 Nxf4 29. Bxf4 Bd4+ 30. Kh1 Kg7 31. h3 f6 32. Rc1 g5 33. Bd6 Bb6 34. Kh2 h5 35. Bc5 Bc7+ 36. Kg1 Bf4 37. Rb1 a6 38. Kf1 Rd2 39. Bb4 Rd3 40. Bb7 1-0

