[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.25"]
[Round "13"]
[White "Jaros, Martin"]
[Black "Polak, JAJ"]
[Result "1-0"]
[ECO "B75"]
[PlyCount "47"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 g6 7. f3 Bg7 8. Be3 0-0 9. Qd2 Qc7 10. Bb3 Re8 11. 0-0-0 Nbd7 12. g4 Nc5 13. Kb1 Nxb3 14. cxb3 Be6 15. h4 h5 16. gxh5 gxh5 17. Bh6 Bh8 18. Nd5 Qc5 19. Rc1 Qa7 20. Qg5+ Kh7 21. Nxf6+ Bxf6 22. Qxh5 Bg4 23. fxg4 Bxd4 24. Rcf1 1-0

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.24"]
[Round "12"]
[White "Polak, JAJ"]
[Black "Enders, J."]
[Result "1-0"]
[ECO "C70"]
[PlyCount "71"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. d4 Nxb3 7. axb3 exd4 8. Qxd4 Ne7 9. Bg5 f6 10. Bf4 Nc6 11. Qd5 Nb4 12. Qd2 Bb7 13. c3 Nc6 14. 0-0 d6 15. c4 bxc4 16. bxc4 Ne5 17. Qe2 Qd7 18. Nd4 Be7 19. Nc3 0-0 20. Rfd1 Qg4 21. Qxg4 Nxg4 22. Ne6 Rfc8 23. Nd5 Bxd5 24. cxd5 c5 25. Rd3 Rab8 26. Rg3 h5 27. h3 g5 28. hxg4 gxf4 29. Nxf4 h4 30. Rh3 Rxb2 31. Rxa6 f5 32. gxf5 Bf6 33. Rxd6 Be5 34. Rg6+ Kf7 35. Rxh4 Ra8 36. Rh7+ 1-0

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.23"]
[Round "11"]
[White "Polak, JAJ"]
[Black "Riha, Jaroslav"]
[Result "1/2-1/2"]
[ECO "A16"]
[PlyCount "67"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nxc3 6. bxc3 Bg7 7. Qb3 Nc6 8. Nf3 0-0 9. a4 Na5 10. Qc2 c5 11. Ba3 Qc7 12. Rb1 b6 13. c4 Bb7 14. 0-0 Rad8 15. Bb2 e5 16. d3 Rfe8 17. Nd2 Bxg2 18. Kxg2 f5 19. f3 Re6 20. Bc3 Nc6 21. Rf2 Bh6 22. Nf1 e4 23. fxe4 fxe4 24. dxe4 Nd4 25. Qd3 Qc6 26. e3 Rxe4 27. exd4 Re3+ 28. d5 Rxd3 29. dxc6 Rxc3 30. a5 Rxc4 31. axb6 axb6 32. Rxb6 Re4 33. c7 Rc8 34. Rc6 1/2-1/2

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.22"]
[Round "10"]
[White "Prucha, Karel"]
[Black "Polak, JAJ"]
[Result "1/2-1/2"]
[ECO "E92"]
[PlyCount "90"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 Nfd7 8. 0-0 Nc5 9. Nd2 a5 10. Qc2 Bh6 11. Nb3 Bxc1 12. Raxc1 Nbd7 13. Nd2 Qg5 14. Nb5 Na6 15. Nf3 Qh6 16. Qd2 Qxd2 17. Nxd2 Ndc5 18. b3 f5 19. f3 Rf7 20. a3 Bd7 21. Rb1 fxe4 22. fxe4 Raf8 23. Nc3 Rxf1+ 24. Bxf1 Kf7 25. b4 axb4 26. axb4 Na4 27. Nxa4 Bxa4 28. Ra1 Bd7 29. c5 Nxb4 30. cxd6 c5 31. dxc6 Nxc6 32. Bc4+ Kg7 33. Rb1 Na5 34. Bd5 Rf6 35. Bxb7 Rxd6 36. Bd5 Bc6 37. Rb6 Rd8 38. Bxc6 Nxc6 39. Nf3 Rd6 40. Rb7+ Kf6 41. Rxh7 Nd4 42. Kf2 Ra6 43. Rb7 Nxf3 44. gxf3 Ra1 45. Rb5 Kg5 1/2-1/2

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.21"]
[Round "9"]
[White "Polak, JAJ"]
[Black "Brychta, Vladimir"]
[Result "1-0"]
[ECO "A30"]
[PlyCount "103"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. 0-0 d6 7. d4 Nbd7 8. Re1 Rc8 9. d5 Be7 10. e4 exd5 11. cxd5 0-0 12. e5 Ne8 13. Nb5 a6 14. Na7 Rc7 15. Nc6 Bxc6 16. dxc6 Rxc6 17. Nd4 Rc7 18. Nc6 Rxc6 19. Bxc6 Nxe5 20. Bg2 Nc7 21. Rb1 Bf6 22. f4 Ng6 23. b4 Nb5 24. Bb2 Nc3 25. Bxc3 Bxc3 26. Re2 cxb4 27. Qd3 b5 28. h4 Qb6+ 29. Kh2 Rd8 30. h5 Nf8 31. Re7 Bf6 32. Rb7 Qc5 33. Bd5 Rd7 34. Rb8 Re7 35. Kh3 Qc7 36. Ra8 Qd7+ 37. g4 Qc7 38. Rxb4 Re1 39. Re4 Rc1 40. Ree8 Be7 41. Be4 g6 42. Rac8 Qxc8 43. Rxc8 Rxc8 44. Bd5 Bf6 45. Qe4 Rc7 46. g5 Re7 47. Qb4 Re3+ 48. Kg2 Bc3 49. Qxd6 gxh5 50. Qc7 Ne6 51. Bxe6 fxe6 52. Qb8+ 1-0

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.20"]
[Round "8"]
[White "Malcanek, Oldrich"]
[Black "Polak, JAJ"]
[Result "0-1"]
[ECO "E66"]
[PlyCount "74"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 c5 7. d4 Nc6 8. d5 Na5 9. Qd3 a6 10. Nd2 Bd7 11. a4 Qc7 12. h3 Rfb8 13. f4 b5 14. axb5 axb5 15. cxb5 c4 16. Qf3 Bxb5 17. Nxb5 Rxb5 18. e4 Rab8 19. f5 Nb3 20. Nxb3 Rxb3 21. Qf2 Qb6 22. Ra7 Qxf2+ 23. Rxf2 Nh5 24. Rd2 Nxg3 25. Kf2 gxf5 26. Rxe7 fxe4 27. Rc2 Bd4+ 28. Ke1 Bxb2 29. Rxc4 Bxc1 30. Rxc1 Rb2 31. Bf1 Rb1 32. Rec7 Rxc1+ 33. Rxc1 Nxf1 34. Kxf1 Rb5 35. Rd1 Rb3 36. Kg2 Kg7 37. Rf1 Kg6 0-1

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.19"]
[Round "7"]
[White "Polak, JAJ"]
[Black "Blatny, Frantisek"]
[Result "0-1"]
[ECO "C70"]
[PlyCount "66"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5 5. d4 exd4 6. e5 Bc5 7. 0-0 Nge7 8. Re1 d5 9. Bxc6+ Nxc6 10. Bg5 Be7 11. Bxe7 Qxe7 12. Nxd4 Nxd4 13. Qxd4 Be6 14. b4 0-0 15. Nd2 b6 16. Nb3 Rfc8 17. Rab1 c5 18. bxc5 bxc5 19. Qa4 Qc7 20. c3 Rcb8 21. f4 Rb5 22. Nd2 Qb7 23. Rb3 c4 24. Rxb5 axb5 25. Qb4 d4 26. cxd4 Rxa2 27. Nf3 h6 28. Qd6 Kf7 29. Rd1 Qd5 30. Qc7+ Kg6 31. Qe7 Kh7 32. Qb4 Qe4 33. Re1 Qc2 0-1

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.18"]
[Round "6"]
[White "Schumann, J."]
[Black "Polak, JAJ"]
[Result "1/2-1/2"]
[ECO "E63"]
[PlyCount "55"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. d4 0-0 5. Nc3 d6 6. Bg2 Nc6 7. 0-0 a6 8. h3 Bd7 9. Be3 Rb8 10. Qd2 Re8 11. d5 Na5 12. b3 c5 13. dxc6 Nxc6 14. Rad1 b5 15. cxb5 axb5 16. Nd4 Nxd4 17. Bxd4 b4 18. Bxf6 exf6 19. Ne4 Bxh3 20. Nxd6 Bxg2 21. Kxg2 Re6 22. Nc4 Qe8 23. e3 Ra6 24. Qd5 Rxa2 25. Ra1 Rba8 26. Rxa2 Rxa2 27. Rc1 Qa8 28. Nb6 1/2-1/2

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.17"]
[Round "5"]
[White "Polak, JAJ"]
[Black "Fichtl, Jiri"]
[Result "1-0"]
[ECO "E08"]
[PlyCount "55"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. b3 Nbd7 7. Bb2 c6 8. Qc2 b6 9. d4 a5 10. Nbd2 Ba6 11. e4 Rc8 12. Rfe1 c5 13. exd5 exd5 14. Rad1 cxd4 15. Nxd4 b5 16. Qf5 bxc4 17. bxc4 g6 18. Qg5 Bxc4 19. Rxe7 Qxe7 20. Nf5 Qe6 21. Bh3 Qe2 22. Nh6+ Kg7 23. Bg4 Qxd1+ 24. Bxd1 Rfe8 25. Bg4 Rb8 26. Nxc4 dxc4 27. Bc3 Rb1+ 28. Kg2 1-0

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.16"]
[Round "4"]
[White "Vesely, Jiri"]
[Black "Polak, JAJ"]
[Result "1-0"]
[ECO "E74"]
[PlyCount "67"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 c5 7. d5 Na6 8. Nf3 Nc7 9. a4 Rb8 10. Nd2 a6 11. f4 Nfe8 12. 0-0 Bd7 13. Bh4 b5 14. axb5 axb5 15. e5 dxe5 16. Nce4 Bf5 17. Nxc5 exf4 18. Nf3 bxc4 19. Bxc4 Bxb2 20. Nd4 Qd6 21. Ra5 Bg4 22. Qd2 Nf6 23. Nc6 Ncxd5 24. Bxd5 Rb6 25. Bxf6 Bxf6 26. Ne4 Qc7 27. Ra7 Rb7 28. Nxf6+ exf6 29. Ne7+ Qxe7 30. Rxb7 Qc5+ 31. Kh1 f3 32. Bxf3 Bxf3 33. Rxf3 Kg7 34. h3 1-0

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.15"]
[Round "3"]
[White "Polak, JAJ"]
[Black "Crha, Josef"]
[Result "1/2-1/2"]
[ECO "A23"]
[PlyCount "32"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 cxd5 7. d3 Qb6 8. dxe4 Bc5 9. e3 dxe4 10. Bg2 0-0 11. 0-0 Bg4 12. Qc2 Bxd4 13. exd4 Nc6 14. Be3 Nxd4 15. Bxd4 Qxd4 16. Nxe4 Nxe4 1/2-1/2

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.14"]
[Round "2"]
[White "Kantor, K."]
[Black "Polak, JAJ"]
[Result "1/2-1/2"]
[ECO "C76"]
[PlyCount "93"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. 0-0 g6 7. d4 Bg7 8. Be3 Nf6 9. Nbd2 Ng4 10. Bg5 f6 11. Bh4 Qe7 12. h3 Nh6 13. d5 Nb8 14. Bxd7+ Nxd7 15. Nh2 0-0 16. g4 Nc5 17. Qc2 Qd7 18. b4 Qa4 19. Qb1 Nd7 20. Nc4 b6 21. Re1 a5 22. a3 Nf7 23. f3 Bh6 24. Nf1 Bf4 25. Kg2 Kg7 26. Bg3 Rh8 27. Qd3 h5 28. Nfd2 axb4 29. axb4 Qxa1 30. Rxa1 Rxa1 31. Nf1 hxg4 32. fxg4 Ra2+ 33. Ncd2 Ng5 34. h4 Bxd2 35. Nxd2 Nxe4 36. Qxe4 Rxd2+ 37. Kh3 b5 38. Qe3 Rxd5 39. Qa7 Kf7 40. Qxc7 Ke7 41. c4 bxc4 42. Qxc4 Rd4 43. Qc2 Kf7 44. Qb3+ Ke7 45. Qc2 Rg8 46. h5 Kf7 47. Qb3+ 1/2-1/2

[Event "CSR-ch31 sf"]
[Site "Brno"]
[Date "1961.10.13"]
[Round "1"]
[White "Polak, JAJ"]
[Black "Hajduk, A."]
[Result "0-1"]
[ECO "C77"]
[PlyCount "80"]
[EventDate "1961.10.13"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CSR"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Bc5 7. a4 Rb8 8. axb5 axb5 9. Nc3 0-0 10. Nxb5 d5 11. exd5 e4 12. Ng5 Nxd5 13. Nxe4 Nf4 14. Qf3 Rxb5 15. Qxf4 Nd4 16. Ba4 Ra5 17. Nxc5 Rxc5 18. d3 Rf5 19. Qe4 c6 20. 0-0 Re8 21. Qg4 Ne2+ 22. Kh1 Rxf2 23. Bg5 Bxg4 24. Bxd8 Rxf1+ 25. Rxf1 Rxd8 26. Bxc6 Nd4 27. Rf4 Bd1 28. Ba4 Bxc2 29. Rxd4 Rxd4 30. Bxc2 Rb4 31. h3 Rxb2 32. Ba4 h5 33. Bc6 Rd2 34. Bb5 h4 35. Kg1 Kf8 36. Bc4 Ke7 37. Kf1 f5 38. Ba6 Kd6 39. Kg1 Ke5 40. Bc4 Kf4 0-1

[Event "NED-chT 1939/40"]
[Site "Netherlands"]
[Date "1940.02.11"]
[Round "4.3"]
[White "Polak, JAJ"]
[Black "Oskam, Gerard"]
[Result "1-0"]
[ECO "A40"]
[PlyCount "85"]
[EventDate "1939.11.05"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Rotterdam NRSV"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. g3 Nxe5 5. Bg2 Nxf3+ 6. Bxf3 Nf6 7. 0-0 d6 8. c4 c6 9. Nc3 Nd7 10. b4 Ne5 11. b5 Qc7 12. Bf4 Be7 13. Rc1 0-0 14. Bg2 Bd7 15. Qb3 Be6 16. Nd5 Bxd5 17. cxd5 c5 18. Rfd1 Bf6 19. Bxe5 Bxe5 20. f4 Bf6 21. e4 Qb6 22. Qc4 Bd4+ 23. Kh1 Rfe8 24. Rc2 Re7 25. a4 Ree8 26. Rf1 Re7 27. Re2 Qc7 28. g4 Qd7 29. h3 Qc7 30. g5 Kh8 31. Rd1 Rae8 32. Bf3 Qb6 33. h4 Qd8 34. Kg2 Qb6 35. Kg3 Qa5 36. h5 Qc3 37. Qxc3 Bxc3 38. Kg4 Kg8 39. e5 Kf8 40. g6 hxg6 41. hxg6 dxe5 42. d6 Rd7 43. Rh2 1-0

[Event "Amsterdam VAS"]
[Site "Amsterdam"]
[Date "1940.02.07"]
[Round "?"]
[White "Swaneveld, Govert"]
[Black "Polak, JAJ"]
[Result "1-0"]
[ECO "D95"]
[PlyCount "47"]
[EventDate "1940.01.24"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Qb3 0-0 7. Bd3 e6 8. 0-0 Nbd7 9. Bd2 Qc7 10. Rac1 dxc4 11. Bxc4 e5 12. Na4 exd4 13. exd4 a5 14. Ng5 Ng4 15. Bxf7+ Kh8 16. Qh3 Ndf6 17. Be6 Qd6 18. Nc5 Qxd4 19. Bc3 Qf4 20. Bxc8 Qxg5 21. Ne6 Qf5 22. Nxf8 Qxc8 23. Nxg6+ Kg8 24. Ne7+ 1-0

[Event "NED-ch10 sf-A"]
[Site "Rotterdam"]
[Date "1938.04.30"]
[Round "7"]
[White "Ten Kate, Teunis"]
[Black "Polak, JAJ"]
[Result "1-0"]
[ECO "B15"]
[PlyCount "65"]
[EventDate "1938.04.15"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Bd6 7. Qe2+ Be7 8. Nf3 0-0 9. Be3 Nd7 10. 0-0 Nb6 11. Bd3 Bg4 12. c4 Re8 13. Qc2 g6 14. Nd2 f5 15. h3 Bh5 16. Rae1 Bg5 17. Nb3 f4 18. Bd2 Rxe1 19. Rxe1 Qc8 20. Qc1 Qc7 21. Nc5 Rd8 22. Re4 f5 23. Ne6 Qe7 24. Re1 Rd7 25. Nc5 Qd8 26. Nxd7 Qxd7 27. Bxf4 Bf6 28. c5 Nd5 29. Be5 Kg7 30. Bxf6+ Nxf6 31. Qf4 Nd5 32. Qd6 Qc8 33. Bc4 1-0

[Event "NED-ch10 sf-A"]
[Site "Rotterdam"]
[Date "1938.04.16"]
[Round "2"]
[White "Vlagsma, Chris"]
[Black "Polak, JAJ"]
[Result "0-1"]
[ECO "B10"]
[PlyCount "48"]
[EventDate "1938.04.15"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c6 2. Ne2 d5 3. e5 Bg4 4. f3 Bf5 5. Ng3 Bd7 6. d4 e6 7. Nd2 c5 8. dxc5 Bxc5 9. Nb3 h5 10. Nxc5 Qa5+ 11. c3 Qxc5 12. Bd3 h4 13. Ne2 Nc6 14. f4 0-0-0 15. b4 Qb6 16. a4 f6 17. exf6 Nxf6 18. a5 Qc7 19. 0-0 Kb8 20. Nd4 Nxd4 21. cxd4 Qc3 22. Be3 Bb5 23. Bxb5 Qxe3+ 24. Kh1 Ne4 0-1

[Event "NED-ch10 sf-A"]
[Site "Rotterdam"]
[Date "1938.04.15"]
[Round "1"]
[White "Polak, JAJ"]
[Black "Mulder, Emile AJM"]
[Result "1-0"]
[ECO "A06"]
[PlyCount "49"]
[EventDate "1938.04.15"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 c5 3. b3 Nc6 4. Bb5 a6 5. Bxc6+ bxc6 6. Ne5 Qd6 7. Bb2 Bf5 8. f4 f6 9. Nf3 Nh6 10. 0-0 g6 11. d3 Bg7 12. Nbd2 e5 13. e4 Bg4 14. h3 Bxf3 15. Qxf3 exf4 16. exd5 cxd5 17. Rae1+ Kd7 18. Nc4 Qc6 19. Na5 Qd6 20. Nc4 Qc6 21. Nb6+ Kd8 22. Nxa8 Qxa8 23. Qxf4 Nf5 24. g4 Nd4 25. Qd6+ 1-0

[Event "Amsterdam ASC/VAS Group D"]
[Site "Amsterdam"]
[Date "1937.05.01"]
[Round "3"]
[White "Polak, JAJ"]
[Black "Spinhoven, Freek"]
[Result "1-0"]
[ECO "D37"]
[PlyCount "53"]
[EventDate "1937.04.24"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. e3 Be7 5. Bd3 0-0 6. 0-0 Nbd7 7. Nc3 Re8 8. e4 dxe4 9. Nxe4 b6 10. Ng3 Bb7 11. Bg5 Nf8 12. Ne5 c5 13. dxc5 bxc5 14. Qe2 Qc7 15. Rad1 Rad8 16. Rfe1 Ba8 17. Bc2 Qa5 18. a3 Rd4 19. Rxd4 cxd4 20. Bc1 Rc8 21. b4 Qc7 22. Bf4 Nd5 23. Bxh7+ Nxh7 24. cxd5 Qc2 25. dxe6 fxe6 26. Qa6 Bd5 27. Qxa7 1-0

[Event "Amsterdam ASC/VAS Group D"]
[Site "Amsterdam"]
[Date "1937.04.25"]
[Round "2"]
[White "Polak, JAJ"]
[Black "Fine, Reuben"]
[Result "0-1"]
[ECO "E23"]
[PlyCount "46"]
[EventDate "1937.04.24"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. Nf3 Nc6 6. dxc5 Ne4 7. e3 Nxc3 8. bxc3 Bxc5 9. Bd3 0-0 10. 0-0 b6 11. Qc2 h6 12. Nd4 Bb7 13. f4 Rc8 14. Qe2 Ba6 15. Bb2 Re8 16. Rad1 Na5 17. Nb5 e5 18. Bf5 exf4 19. Kh1 Rxe3 20. Qg4 Nxc4 21. Rxd7 Qg5 22. Rxa7 Qxg4 23. Bxg4 Nxb2 0-1

