[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Pijpers, Arthur"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2480"]
[BlackElo "2109"]
[PlyCount "41"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 e6 7. Bg5 Qa5+ 8. Nd2 Qa6 9. c4 Bb4 10. b3 c5 11. Ngf3 Nc6 12. 0-0 cxd4 13. Nxd4 Bxd2 14. Qxd2 dxc4 15. Rfd1 Nge7 16. Nxc6 Qxc6 17. Rac1 Qc7 18. Rxc4 Nc6 19. b4 a6 20. a4 Qb6 21. Qd6 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Polak, Alexander"]
[Black "Henseler, Jorgen"]
[Result "1-0"]
[ECO "B97"]
[WhiteElo "2109"]
[BlackElo "2048"]
[PlyCount "107"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Qb6 9. Qd2 Qxb2 10. Rb1 Qa3 11. e5 dxe5 12. fxe5 g5 13. exf6 gxh4 14. Be2 Nd7 15. 0-0 Qa5 16. Kh1 Qg5 17. Qe1 Nxf6 18. Bf3 Rg8 19. Rxb7 Bxb7 20. Bxb7 Rd8 21. Bc6+ Rd7 22. Rf5 Qg7 23. Nxe6 fxe6 24. Qxe6+ Be7 25. Rxf6 Qxf6 26. Qxg8+ Bf8 27. Qc4 Bg7 28. Bxd7+ Kxd7 29. Qd3+ Ke8 30. Nd1 Qa1 31. Qe4+ Kf8 32. Qf5+ Kg8 33. Qd5+ Kh8 34. h3 Bd4 35. Qd8+ Kg7 36. Qd7+ Kh8 37. Qc8+ Kg7 38. Qg4+ Kh8 39. c4 Kh7 40. Kh2 Kh8 41. Qe2 Be5+ 42. Kg1 Qd4+ 43. Kf1 Bg3 44. Qb2 Be5 45. Qxd4 Bxd4 46. Ke2 Kg7 47. Kd3 Be5 48. Ke4 Kf6 49. Ne3 Bd6 50. Nf5 Bc5 51. Nxh4 Ke6 52. Nf5 Bf8 53. g4 h5 54. gxh5 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "De Weert, Chris WJ"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "E38"]
[WhiteElo "1756"]
[BlackElo "2109"]
[PlyCount "70"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. e3 0-0 6. Nf3 c5 7. dxc5 Na6 8. Bd2 Bxc5 9. a3 Re8 10. b4 Bf8 11. Rd1 Nc7 12. Be2 a5 13. Qb2 axb4 14. axb4 Qe7 15. Rb1 e5 16. cxd5 Nfxd5 17. Nxd5 Nxd5 18. e4 Nf6 19. Bd3 Bg4 20. Bc3 Bxf3 21. gxf3 Qe6 22. Qb3 Qh3 23. Ke2 Nh5 24. Bd2 Re6 25. Bc4 Rf6 26. Bg5 Nf4+ 27. Bxf4 Rxf4 28. Ra1 Rc8 29. Rhc1 g5 30. Be6 fxe6 31. Rxc8 Rxe4+ 32. Kd2 Kf7 33. Rc4 Rxc4 34. Qxc4 Qxf3 35. Qe2 Bxb4+ 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Plug, Arjan JH"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2109"]
[BlackElo "1839"]
[PlyCount "49"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Bxc5 10. 0-0-0 Qa5 11. Kb1 a6 12. Bxc5 Nxc5 13. Qe3 Rd8 14. f5 exf5 15. Nxd5 Be6 16. Bc4 Ne4 17. Nb6 Rab8 18. Bxe6 fxe6 19. Nd7 Nb4 20. Qb3 Nc5 21. Nxc5 Rxd1+ 22. Rxd1 Qxc5 23. Qxe6+ Kh8 24. c3 Nc6 25. Ng5 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Van der Werf, Mark"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2391"]
[BlackElo "2109"]
[PlyCount "71"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 b5 6. e4 bxc4 7. Bxc4 Nxd5 8. Bxd5 exd5 9. Qxd5 Nc6 10. Nge2 Ba6 11. Kf2 0-0 12. Rd1 Re8 13. Bf4 Qb6 14. Rab1 c4+ 15. Be3 Qc7 16. Qg5 Qe5 17. Nd5 Ba5 18. Ng3 Qxg5 19. Bxg5 Ne5 20. Nf5 Rab8 21. b4 Nd3+ 22. Kg3 Nxb4 23. Bf4 Rb6 24. Nxb6 axb6 25. Bd2 Nxa2 26. Bxa5 bxa5 27. Ra1 Nc3 28. Rd2 Rxe4 29. Rxa5 g6 30. fxe4 Nxe4+ 31. Kf4 Nxd2 32. Nd6 c3 33. Rxa6 Nb3 34. Ra8+ Kg7 35. Rc8 Nd4 36. Ke3 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.08"]
[Round "1"]
[White "Polak, Alexander"]
[Black "Schenkelaars, Vincent"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2109"]
[BlackElo "1841"]
[PlyCount "61"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. h3 Bg7 5. Be3 c6 6. a4 Qa5 7. Bd3 Na6 8. f4 0-0 9. Nf3 c5 10. 0-0 cxd4 11. Nxd4 Nc5 12. Qd2 e5 13. Ndb5 exf4 14. Bxf4 a6 15. Nxd6 Ne6 16. Nc4 Qc5+ 17. Be3 Qc7 18. e5 Nd7 19. Nd5 Qd8 20. Bh6 Qh4 21. Bxg7 Kxg7 22. Qf2 Qg5 23. Rae1 b5 24. axb5 axb5 25. Nd6 Nxe5 26. Nf5+ gxf5 27. Rxe5 Nd8 28. Ne7 Be6 29. Nxf5+ Kh8 30. Rxb5 Bd7 31. Qd4+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "Van Wessel, Rudy"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2389"]
[BlackElo "2105"]
[PlyCount "73"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. Rb1 0-0 9. b4 Re8 10. b5 Nd4 11. d3 a6 12. bxa6 Rxa6 13. Nxe5 Bf6 14. f4 Bxe5 15. fxe5 Rxe5 16. e3 Re8 17. Rf2 Ne6 18. Rb4 Nd7 19. Rh4 Ne5 20. d4 Ng6 21. Rh5 c6 22. Ne4 Ra5 23. Rxa5 Qxa5 24. Nd6 Rd8 25. Nxf7 Rf8 26. Nd6 Rxf2 27. Kxf2 Qxa2+ 28. Kg1 Bd7 29. Nxb7 Qb1 30. Nd6 Ng5 31. Qf1 Ne7 32. h4 Qb4 33. Qf4 Ng6 34. Qxg5 Qxd6 35. Qd8+ Nf8 36. Kh2 h5 37. Qa8 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2105"]
[BlackElo "1722"]
[PlyCount "47"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Nxc5 10. Qf2 b6 11. Bb5 Bb7 12. Bxc6 Bxc6 13. Nd4 Bb7 14. 0-0-0 Qc7 15. Qg3 Rfd8 16. f5 Bf8 17. f6 g6 18. Ncb5 Qd7 19. Qh4 Ne4 20. Bh6 Bc5 21. Rd3 a6 22. Rh3 axb5 23. Bg7 h5 24. Qxh5 1-0

[Event "Leiden Noteboom Memorial 79th"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Brouwer, Dennis"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "2113"]
[BlackElo "2190"]
[PlyCount "54"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 a5 6. a4 Bb4+ 7. c3 Bd6 8. Bg5 Be6 9. 0-0 Nbd7 10. Re1 0-0 11. Nbd2 Qc7 12. Nf1 Rfe8 13. Ng3 h6 14. Bxf6 Nxf6 15. Nh4 Qb6 16. Nhf5 Bc5 17. d4 exd4 18. cxd4 Bb4 19. e5 Bxe1 20. exf6 Bxf5 21. Nxf5 Re6 22. Qg4 g6 23. Ne7+ Kh7 24. Nxg6 Bxf2+ 25. Kxf2 Rxf6+ 26. Nf4 Qxd4+ 27. Kf3 Qe4+ 0-1

[Event "Leiden Noteboom Memorial 79th"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1"]
[White "Van Vliet, Jeffrey"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2379"]
[BlackElo "2113"]
[PlyCount "67"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 Nf6 8. 0-0 d6 9. f4 Be7 10. Qe1 h5 11. Kh1 Bd7 12. Rd1 b5 13. a3 Rc8 14. Qg3 h4 15. Qxg7 Rh7 16. Qg5 Kf8 17. e5 Ne4 18. Nxe4 Bxg5 19. exd6 Qd8 20. fxg5 Ne5 21. Nf6 Rh8 22. h3 Kg7 23. c3 Ng6 24. Bd3 Rf8 25. Nf3 Bc6 26. Bxg6 Bxf3 27. Rxf3 Kxg6 28. Ng4 Rc4 29. Ne5+ Kh7 30. Nxc4 bxc4 31. Rf4 Qb8 32. d7 Kg6 33. Rxc4 Rd8 34. Rb4 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.02.15"]
[Round "5"]
[White "Roobol, Martin"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2263"]
[BlackElo "2105"]
[PlyCount "47"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 Qb6 5. g4 Bd7 6. c4 h5 7. gxh5 Nh6 8. Nc3 dxc4 9. Bxc4 Nf5 10. Nf3 e6 11. Bb3 Rxh5 12. Bg5 Na6 13. Qe2 Be7 14. 0-0-0 Bxg5+ 15. Nxg5 Rh8 16. Nce4 Rd8 17. Qg4 Rf8 18. Nh7 Rh8 19. Nd6+ Nxd6 20. Qxg7 Rxh7 21. Qg8+ Ke7 22. exd6+ Kxd6 23. Qxh7 Ke7 24. Qg7 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2105"]
[BlackElo "1710"]
[PlyCount "61"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Be7 5. Nc3 d6 6. a3 0-0 7. h3 Be6 8. Nd5 Na5 9. Ba2 h6 10. 0-0 c5 11. b4 Nc6 12. Rb1 Rb8 13. Nd2 cxb4 14. axb4 Qd7 15. b5 Nd4 16. Nxe7+ Qxe7 17. Bxe6 Nxe6 18. Nc4 Qd7 19. Ba3 Ne8 20. Qg4 f5 21. exf5 Nd4 22. Bxd6 Rxf5 23. Bxb8 Nf6 24. Nxe5 Qd5 25. c4 Qc5 26. Bxa7 b6 27. Nd7 Nxd7 28. Kh1 Nf6 29. Qg3 Kh7 30. Bb8 Rg5 31. Qd6 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Arnold, Frieda"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1754"]
[BlackElo "2105"]
[PlyCount "92"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 dxc4 7. d5 Ne5 8. Qd4 h6 9. Qxe5 hxg5 10. Bxc4 a6 11. a4 g4 12. Qe3 Qc7 13. Bb3 Rxh2 14. Rxh2 Qxh2 15. 0-0-0 g6 16. Qb6 Bf5 17. Bc2 Bh6+ 18. Kb1 Bxc2+ 19. Kxc2 Qxg2 20. Qxb7 Qxf2+ 21. Kb1 Qf5+ 22. Ka1 Qc8 23. Qb6 Kf8 24. d6 exd6 25. Qxd6+ Kg7 26. Rf1 Qd8 27. Qe5 Rc8 28. Nge2 Rc6 29. Nd4 Rd6 30. Rd1 Kg8 31. Ka2 Bg7 32. Ne6 Rxd1 33. Nxd8 Rxd8 34. Qf4 Rd3 35. Ne4 Nxe4 36. Qxe4 Rd4 37. Qa8+ Kh7 38. Qh1+ Bh6 39. Kb3 a5 40. Qh2 Rf4 41. Qg2 Rf3+ 42. Kc4 f5 43. Kb5 Be3 44. Kxa5 Rf2 45. Qh1+ Kg7 46. Qe1 Bd2+ 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "Polak, Alexander"]
[Black "Binnendijk, Daan"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2105"]
[BlackElo "1876"]
[PlyCount "103"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Nxc5 10. 0-0-0 a6 11. Qf2 Qa5 12. Kb1 Na4 13. Nxa4 Qxa4 14. Nd4 Bd7 15. Bd3 Nb4 16. a3 Nxd3 17. Rxd3 Bb5 18. Rc3 Rac8 19. Qe1 Bd7 20. Rf1 b5 21. Rf3 b4 22. Rxc8 Rxc8 23. axb4 Bxb4 24. Qf2 Rb8 25. Bd2 Bc5 26. Bc3 Qc4 27. Qe2 Bxd4 28. Qxc4 dxc4 29. Bxd4 g6 30. Ra3 Bb5 31. Bc5 Rd8 32. Bd6 f5 33. Kc1 Kf7 34. Kd2 Rd7 35. Kc3 Ke8 36. Kb4 Kd8 37. Kc5 Rb7 38. b3 cxb3 39. Rxb3 Kd7 40. g3 Bc6 41. Rxb7+ Bxb7 42. Kb6 Be4 43. c4 a5 44. Kxa5 h5 45. Kb6 Bf3 46. Kc5 Bg2 47. Kd4 Bf3 48. Ke3 Bd1 49. Bb8 Kc6 50. Ba7 Kb7 51. Bd4 Kc7 52. Kd3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2018.07.25"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Van Osch, Mees"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2136"]
[BlackElo "2324"]
[PlyCount "82"]
[EventDate "2018.07.24"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 0-0 10. 0-0-0 a6 11. Kb1 Nxd4 12. Bxd4 b5 13. Qe3 Qc7 14. Bd3 b4 15. Ne2 a5 16. Qh3 g6 17. Qe3 a4 18. Rc1 Ba6 19. h4 Bxd4 20. Nxd4 a3 21. Nb3 axb2 22. Rcd1 Nb6 23. h5 Na4 24. hxg6 Nc3+ 25. Kxb2 Nxd1+ 26. Rxd1 fxg6 27. Qc5 Qxc5 28. Nxc5 Bxd3 29. Nxd3 Rac8 30. g3 Rc4 31. Kb3 Rb8 32. Kb2 Rbc8 33. Rd2 Rd4 34. Rh2 Kg7 35. Rh3 Re4 36. Kb3 Re3 37. Kxb4 Rxc2 38. Nc5 Rb2+ 39. Ka4 Rxa2+ 40. Kb5 Rb2+ 41. Kc6 Rc3 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2018.07.24"]
[Round "1"]
[White "Viani, Antonio Dcunha"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2404"]
[BlackElo "2136"]
[PlyCount "57"]
[EventDate "2018.07.24"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 e6 9. Bd3 Bxd3 10. Qxd3 Nf6 11. Bd2 Be7 12. 0-0-0 0-0 13. Kb1 c5 14. Be3 Ng4 15. Ne4 Qc7 16. Nxc5 Bxc5 17. dxc5 Nxe3 18. Qxe3 Na6 19. Ne5 Nxc5 20. b4 Na4 21. Rd7 Qc8 22. Rh4 Nc3+ 23. Kc1 Nd5 24. Qf3 Qe8 25. Rg4 Rc8 26. Qg3 Ne7 27. Rxe7 Qxe7 28. Rxg7+ Kh8 29. Ng6+ 1-0

[Event "Delft Prinsenstad op 10th"]
[Site "Delft"]
[Date "2017.04.16"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Lai, Hing Ting"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2138"]
[BlackElo "2392"]
[PlyCount "60"]
[EventDate "2017.04.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 a6 5. Be3 b5 6. a3 Bb7 7. Bd3 Nd7 8. Ne2 Ngf6 9. Ng3 c5 10. c3 0-0 11. h3 Re8 12. 0-0 e5 13. dxe5 Nxe5 14. Nxe5 Rxe5 15. Bf4 Re6 16. Re1 Qb6 17. Qd2 Rae8 18. Rad1 h5 19. f3 d5 20. Bg5 c4+ 21. Be3 Qc7 22. Bf4 Qc5+ 23. Be3 Qe7 24. Bb1 dxe4 25. f4 h4 26. Ne2 Nd5 27. Nd4 Nxe3 28. Rxe3 Rf6 29. f5 gxf5 30. Qf2 f4 0-1

[Event "Delft Prinsenstad op 10th"]
[Site "Delft"]
[Date "2017.04.16"]
[Round "5"]
[White "Van Dijk, Harold"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2272"]
[BlackElo "2138"]
[PlyCount "47"]
[EventDate "2017.04.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d4 Nf6 7. Bd3 dxe4 8. Nxe4 Nbd7 9. c3 Nxe4 10. Bxe4 Nf6 11. Bc2 Qd5 12. Qg3 0-0-0 13. 0-0 Bd6 14. f4 g6 15. b4 Bc7 16. Qd3 Bb6 17. Bd2 Qf5 18. Rad1 Nd5 19. Kh1 a5 20. a3 Kc7 21. bxa5 Bxa5 22. c4 Qxd3 23. Bxa5+ b6 24. Rxd3 1-0

[Event "Delft Prinsenstad op 10th"]
[Site "Delft"]
[Date "2017.04.15"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Van Kerkhof, David"]
[Result "1/2-1/2"]
[ECO "C90"]
[WhiteElo "2138"]
[BlackElo "2337"]
[PlyCount "96"]
[EventDate "2017.04.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 0-0 6. Re1 d6 7. c3 Na5 8. Bb5 a6 9. Ba4 c5 10. Nbd2 b5 11. Bc2 Nc6 12. Nf1 Re8 13. h3 h6 14. g4 Nh7 15. Ng3 Ng5 16. Kh2 Nxf3+ 17. Qxf3 Bg5 18. Nf5 Qf6 19. Qg3 g6 20. Nxh6+ Kf8 21. Bxg5 Qxg5 22. Qe3 f6 23. Qxg5 fxg5 24. h4 gxh4 25. g5 Kg7 26. Bb3 Rf8 27. Bd5 Bd7 28. Bxc6 Bxc6 29. Kg2 Rf4 30. f3 Raf8 31. Rf1 d5 32. Rae1 c4 33. Ng4 cxd3 34. Nxe5 d2 35. Rd1 dxe4 36. Nxc6 e3 37. Nd4 Rxd4 38. cxd4 e2 39. Rh1 exd1Q 40. Rxd1 Rf5 41. Rxd2 Rxg5+ 42. Kh3 Rg3+ 43. Kxh4 Rxf3 44. Rc2 Rd3 45. Kg5 Rxd4 46. Rc7+ Kf8 47. Kxg6 Rd2 48. Ra7 Rxb2 1/2-1/2

[Event "Delft Prinsenstad op 10th"]
[Site "Delft"]
[Date "2017.04.15"]
[Round "3"]
[White "Schroer, Marcel"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2054"]
[BlackElo "2138"]
[PlyCount "98"]
[EventDate "2017.04.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. b3 Bg4 9. Bb2 Qd7 10. Rc1 0-0-0 11. d3 f6 12. Nd2 Bh3 13. Nc4 h5 14. Nxb6+ axb6 15. Bxh3 Qxh3 16. e3 h4 17. Qf3 hxg3 18. Qxg3 Rxd3 19. Rfd1 Qxg3+ 20. hxg3 Rhd8 21. Rxd3 Rxd3 22. Rc2 Kd7 23. Kg2 Nb4 24. Re2 Nd5 25. Nxd5 Rxd5 26. Kf3 b5 27. Rc2 Bb4 28. Ke4 Rd2 29. Rxd2+ Bxd2 30. f4 exf4 31. exf4 Ke6 32. g4 c5 33. f5+ Kd6 34. a4 Kc6 35. Kd3 Bg5 36. Ke4 c4 37. axb5+ Kxb5 38. Kd4 cxb3 39. Kc3 Kc5 40. Ba3+ Kd5 41. Bf8 Bh6 42. g5 fxg5 43. f6 gxf6 44. Bxh6 Ke4 45. Kxb3 Kd3 46. Kb2 g4 47. Kc1 g3 48. Bf4 g2 49. Bh2 Ke2 0-1

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.22"]
[Round "7"]
[White "Horvath, Csaba"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2520"]
[BlackElo "2106"]
[PlyCount "37"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. b3 c5 7. Bb2 Nc6 8. Nc3 d6 9. e3 0-0 10. d4 cxd4 11. exd4 d5 12. cxd5 exd5 13. Ne5 Rc8 14. Bh3 Ra8 15. Rc1 Bb4 16. Nb5 Nxe5 17. dxe5 Ba6 18. exf6 Bxb5 19. Qg4 1-0

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.22"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Behrens, Harald"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2106"]
[BlackElo "2248"]
[PlyCount "107"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. a3 Bxc3+ 6. bxc3 b6 7. Nf3 Ba6 8. Bxa6 Nxa6 9. 0-0 Nb8 10. a4 Nc6 11. Qd3 Na5 12. Nd2 Ne7 13. Nb3 Nc4 14. f4 h5 15. Rf3 a5 16. Rh3 0-0-0 17. Nd2 Qc6 18. Nf3 Nf5 19. Ng5 Qd7 20. Qe2 f6 21. Nf3 Rde8 22. Bd2 Kb7 23. Be1 Qf7 24. Nd2 Nxd2 25. Bxd2 fxe5 26. fxe5 Reg8 27. c4 Nxd4 28. Qd3 Nc6 29. cxd5 exd5 30. Qb5 Re8 31. Rc3 Nxe5 32. Rc5 Rhf8 33. Be3 c6 34. Rxc6 Nxc6 35. Qxb6+ Ka8 36. Qxc6+ Qb7 37. Qc5 Rf6 38. Qxa5+ Ra6 39. Qd2 Qc6 40. a5 Rf8 41. h3 Qb5 42. Bb6 Re8 43. Rd1 Rxb6 44. axb6 Qxb6+ 45. Kh1 Rd8 46. Ra1+ Kb7 47. Qe1 Kc8 48. Qe7 Rd7 49. Qe8+ Kc7 50. Qxh5 Qf6 51. Ra7+ Kb6 52. Rxd7 Qf1+ 53. Kh2 Qf4+ 54. Kg1 1-0

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.17"]
[Round "3"]
[White "Van Osch, Mees"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2275"]
[BlackElo "2106"]
[PlyCount "79"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nbd7 5. Qc2 Qc7 6. 0-0 e6 7. b3 b6 8. c4 Bb7 9. Nc3 Ne5 10. Nxe5 dxe5 11. d3 Bd6 12. Bb2 Qe7 13. a4 a5 14. Nb5 Nd7 15. Qd2 0-0 16. g3 Ba6 17. Qe3 Rad8 18. Rad1 f6 19. Bg4 Nb8 20. f4 Nc6 21. Qe2 Bb8 22. f5 exf5 23. exf5 Bxb5 24. axb5 Nd4 25. Bxd4 cxd4 26. Bf3 Bd6 27. Qg2 Rd7 28. Rde1 Bb4 29. Re4 h6 30. Rf2 Ba3 31. Qf1 Qb4 32. Qd1 Qc3 33. Re1 Ra7 34. Ra2 Bb4 35. Ree2 Rd8 36. Ra4 Kf7 37. Be4 h5 38. Kf1 h4 39. g4 Rdd7 40. Qb1 1-0

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.15"]
[Round "1"]
[White "Pijpers, Arthur"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2473"]
[BlackElo "2106"]
[PlyCount "55"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 h6 7. a4 Ne7 8. a5 a6 9. Be3 Qc7 10. Nbd2 0-0-0 11. b4 f6 12. Nb3 Bg4 13. exf6 gxf6 14. Nc5 Nxc5 15. bxc5 e5 16. Rb1 Rg8 17. Nh4 Qd7 18. f3 Nf5 19. Nxf5 Bxf5 20. Rb6 Kc7 21. Qb1 Qc8 22. Qb2 Bh3 23. Rb1 Rxg2+ 24. Kh1 Kd7 25. Bf1 Bxc5 26. dxc5 Rdg8 27. Rxb7+ Ke6 28. Rb8 1-0

[Event "Delft Prinsenstad op 9th"]
[Site "Delft"]
[Date "2016.03.27"]
[Round "6"]
[White "Haslinger, Stewart"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2513"]
[BlackElo "2126"]
[PlyCount "70"]
[EventDate "2016.03.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 171 Extra"]
[Source "ChessBase"]
[SourceDate "2016.04.26"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 h6 7. Nbd2 Ne7 8. Nb3 Qc7 9. a4 Rc8 10. Bd2 Bg4 11. Ne1 Bxe2 12. Qxe2 h5 13. a5 a6 14. Bb4 Nf5 15. Bxf8 Kxf8 16. Nd3 Qd8 17. Qd2 Rc7 18. Nbc5 h4 19. Nxd7+ Qxd7 20. Nc5 Qe7 21. g4 hxg3 22. fxg3 Ke8 23. Ra3 Kd8 24. Rb3 Kc8 25. Qd3 g6 26. Rf4 Rh7 27. Rb6 f6 28. b4 fxe5 29. dxe5 Qg7 30. Nxe6 Qxe5 31. Nxc7 Kxc7 32. Rf1 Qe3+ 33. Qxe3 Nxe3 34. Rf6 Rg7 35. h4 Nc4 1/2-1/2

[Event "Delft Prinsenstad op 9th"]
[Site "Delft"]
[Date "2016.03.27"]
[Round "5"]
[White "Polak, Alexander"]
[Black "Blees, Enrico"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "2126"]
[BlackElo "2203"]
[PlyCount "59"]
[EventDate "2016.03.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 171 Extra"]
[Source "ChessBase"]
[SourceDate "2016.04.26"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Bd6 8. Ngh5 Kf8 9. Qf3 Nf6 10. Nxg6+ hxg6 11. Ng3 Nbd7 12. Bd2 e5 13. dxe5 Nxe5 14. Qb3 Qb6 15. h3 Rh4 16. Be2 Bc5 17. 0-0 Nd5 18. Rae1 Re8 19. Bd1 Nf4 20. Ne4 Ne6 21. Qg3 Rxe4 22. Rxe4 Nd7 23. Bc3 Nf6 24. Rh4 Kg8 25. b4 Be7 26. Bxf6 Bxf6 27. Re4 Rd8 28. Rfe1 Kh7 29. c3 Rd2 30. Bb3 1-0

[Event "Delft Prinsenstad op 9th"]
[Site "Delft"]
[Date "2016.03.26"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Bertholee, Rob"]
[Result "0-1"]
[ECO "B77"]
[WhiteElo "2126"]
[BlackElo "2337"]
[PlyCount "66"]
[EventDate "2016.03.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 171 Extra"]
[Source "ChessBase"]
[SourceDate "2016.04.26"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Nf6 6. Nc3 Bg7 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Nxd4 11. Bxd4 b5 12. g4 a5 13. g5 Nh5 14. a4 Bxd4 15. Qxd4 bxa4 16. Bxa4 Bxa4 17. Rxa4 e5 18. Qd2 Nf4 19. h4 f6 20. Rg1 Qb6 21. Rg3 Qxb2 22. Nd5 fxg5 23. hxg5 Qb1+ 24. Kf2 Nxd5 25. Qxd5+ Kh8 26. Rc4 Qb6+ 27. Ke2 Qa6 28. Ke1 Rab8 29. Rh3 Rb1+ 30. Kd2 Qb6 31. Qd3 Qg1 32. Kc3 Rd1 33. Qe2 Rd4 0-1

[Event "Leiden Noteboom Memorial 76th"]
[Site "Leiden"]
[Date "2016.02.06"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Van der Werf, Mark"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2117"]
[BlackElo "2416"]
[PlyCount "60"]
[EventDate "2016.02.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. e4 d6 2. f4 g6 3. Nf3 Bg7 4. d4 Nf6 5. Bd3 0-0 6. 0-0 Nbd7 7. Qe1 e5 8. fxe5 dxe5 9. Bg5 h6 10. Bh4 g5 11. Bf2 Ng4 12. d5 Nxf2 13. Qxf2 c6 14. dxc6 bxc6 15. Bc4 Qb6 16. Nbd2 Qxf2+ 17. Rxf2 Nc5 18. b4 Ne6 19. Nb3 Rb8 20. a3 Kh8 21. Ne1 Nf4 22. Nc5 f5 23. Rd1 fxe4 24. Nxe4 Bf5 25. Nd6 Bg6 26. Kf1 e4 27. g3 e3 28. Rf3 e2+ 29. Bxe2 Nxe2 30. Kxe2 Bh5 0-1

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.25"]
[Round "8"]
[White "Polak, Alexander"]
[Black "Campbell, Ian"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2114"]
[BlackElo "2005"]
[PlyCount "55"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. f4 e6 6. Bd3 Ne7 7. Nf3 b5 8. 0-0 Bb7 9. Qe1 Nbc6 10. Ne2 Qd7 11. c3 d5 12. e5 Nf5 13. Bf2 h5 14. a4 bxa4 15. Bc2 0-0 16. Bxa4 Qc8 17. h3 Na7 18. g4 hxg4 19. hxg4 Nh6 20. Bh4 Bc6 21. Qg3 Re8 22. Bg5 Kf8 23. Qh4 Ng8 24. Bf6 Bxa4 25. Rxa4 Bxf6 26. exf6 Qd8 27. g5 Qd7 28. Qh8 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.24"]
[Round "7"]
[White "Van Overdam, Julian"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2367"]
[BlackElo "2114"]
[PlyCount "83"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 h6 7. Be3 Ne7 8. Nh4 Bh7 9. f4 c5 10. c4 cxd4 11. Bxd4 Nc6 12. Bf2 Nb6 13. cxd5 Nxd5 14. f5 exf5 15. e6 fxe6 16. Bh5+ Kd7 17. Nc3 Kc8 18. Qb3 Nxc3 19. Qxc3 Qa5 20. Qc2 Bd6 21. Rfe1 Qc7 22. Rxe6 Nd8 23. Qxc7+ Kxc7 24. Rc1+ Kd7 25. Re2 Nc6 26. Rd1 Kc7 27. Red2 Rad8 28. Rxd6 Rxd6 29. Bg3 Rhd8 30. Bg6 Bxg6 31. Nxg6 Na5 32. Ne7 g6 33. Nxg6 Kc6 34. Ne7+ Kd7 35. Bxd6 Ke6 36. Re1+ Kxd6 37. Nxf5+ Kc6 38. Nxh6 Rd2 39. b4 Nc4 40. a4 Nb2 41. Nf7 Nd3 42. Ne5+ 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.23"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Johansson, Gunnar"]
[Result "0-1"]
[ECO "B49"]
[WhiteElo "2114"]
[BlackElo "2223"]
[PlyCount "98"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 b5 8. 0-0 Bb7 9. f4 Bc5 10. Kh1 Qb6 11. Nxc6 Bxe3 12. Ne5 d6 13. Ng4 Bd4 14. Qe1 Nf6 15. e5 Nxg4 16. Bxg4 dxe5 17. fxe5 Qc7 18. Qh4 Bxe5 19. Rae1 0-0 20. Re3 Rad8 21. Be2 Bxc3 22. Rxc3 Qe5 23. Rh3 Qe4 24. Qxe4 Bxe4 25. Rc3 Rc8 26. Rxc8 Rxc8 27. Rd1 Kf8 28. c3 Ke7 29. Rd4 Bc6 30. Kg1 Rd8 31. Rxd8 Kxd8 32. a4 Kc7 33. a5 Kd6 34. Kf2 f5 35. g3 g5 36. b4 Bd5 37. Bd3 h6 38. Ke3 Ke5 39. Bc2 f4+ 40. gxf4+ gxf4+ 41. Kf2 Kd6 42. Bd1 e5 43. Bg4 Bb7 44. Bd1 e4 45. Bc2 Ke5 46. Bb3 Bd5 47. Bd1 e3+ 48. Ke2 Bc4+ 49. Ke1 Ke4 0-1

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.21"]
[Round "5"]
[White "Visser, Henk Jan"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2272"]
[BlackElo "2114"]
[PlyCount "137"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4 7. Nxd4 Ne7 8. Nd2 Nbc6 9. N2f3 Be4 10. 0-0 Ng6 11. Nxc6 bxc6 12. Ng5 Be7 13. Nxe4 dxe4 14. Qd4 Qd5 15. Qc3 0-0 16. Rfd1 Qxe5 17. Bd4 Qg5 18. Qxc6 e5 19. Be3 Nf4 20. Bf1 Qg4 21. Kh1 Ne6 22. h3 Qg6 23. Ba6 Rad8 24. c3 Nc5 25. Qxg6 hxg6 26. Bf1 Na4 27. Bxa7 Nxb2 28. Rxd8 Rxd8 29. Bb5 Rd2 30. Kg1 Rc2 31. a4 Rxc3 32. a5 Rb3 33. a6 Rxb5 34. Bd4 Rb8 35. Bxe5 Ra8 36. Bxb2 Bc5 37. Kf1 Kf8 38. Ke2 Bb6 39. Bc1 Ke7 40. Be3 Bc7 41. a7 Be5 42. Ra4 f5 43. g3 Kd7 44. Rc4 Kd6 45. h4 Kd5 46. Rc2 Kd6 47. Kd1 Kd7 48. Kc1 Kd6 49. Kb1 Kd7 50. Rc4 Kd6 51. Kc2 Kd5 52. Kb3 Bd6 53. Rc2 f4 54. Rd2+ Kc6 55. Rxd6+ Kxd6 56. Bxf4+ Kd5 57. Bb8 Kd4 58. Kc2 e3 59. f3 e2 60. Kd2 e1Q+ 61. Kxe1 Ke3 62. f4 Kf3 63. Kd2 Kxg3 64. Ke3 Kxh4 65. Kf3 Kh3 66. Ke3 Kg4 67. Ke4 g5 68. fxg5 Kxg5 69. Kd5 1/2-1/2

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.19"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Erwich, Frank"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2114"]
[BlackElo "2361"]
[PlyCount "132"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Be3 Bxe3 6. fxe3 d6 7. c3 Ne7 8. 0-0 Ng6 9. Nbd2 0-0 10. Qe1 c6 11. d4 Qe7 12. Nh4 Nxh4 13. Qxh4 Be6 14. Bd3 Rfe8 15. Rf3 Nd7 16. Qh5 Nf6 17. Qh4 Nd7 18. Qh5 f6 19. Nf1 Qf7 20. Qh4 Nf8 21. g4 Ng6 22. Qg3 Qd7 23. h3 d5 24. exd5 Bxd5 25. Bf5 Qd6 26. Rf2 Rad8 27. Bxg6 hxg6 28. a3 g5 29. Rd1 exd4 30. exd4 Qxg3+ 31. Nxg3 Re3 32. Kh2 Rde8 33. Rdd2 Kf7 34. Rde2 Bc4 35. Rxe3 Rxe3 36. Nf5 Re6 37. Rf3 g6 38. Ne3 Be2 39. Rg3 Bd3 40. Kg1 Re8 41. Kf2 a5 42. b4 axb4 43. axb4 Ra8 44. Ke1 Ra1+ 45. Kd2 Be4 46. Nc4 Ra2+ 47. Kd1 Ke6 48. Na5 f5 49. gxf5+ Kxf5 50. Nxb7 Kf4 51. Rg4+ Ke3 52. Kc1 Rc2+ 53. Kb1 Rxc3+ 54. Kb2 Rc2+ 55. Kb3 Rh2 56. Rxg5 Kxd4 57. Ka4 Rxh3 58. Nd6 Bc2+ 59. Ka5 Rh5 60. Nf7 Bb3 61. Rxh5 gxh5 62. Ng5 Bc4 63. Kb6 Bb5 64. Nf3+ Ke3 65. Nh4 Kf4 66. Kc5 Kg4 0-1

[Event "Haarlem Nova College op-A 13th"]
[Site "Haarlem"]
[Date "2015.06.26"]
[Round "1"]
[White "Sadler, Matthew D"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2659"]
[BlackElo "2114"]
[PlyCount "67"]
[EventDate "2015.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. b3 Nd7 4. Bb2 Ngf6 5. g3 g6 6. Bg2 Bg7 7. 0-0 0-0 8. Na3 Ne8 9. Bxg7 Nxg7 10. d4 Nf6 11. Qd2 Ne4 12. Qb2 Qa5 13. Rac1 Be6 14. Ne5 f6 15. Nd3 b6 16. Rc2 Nf5 17. e3 Nfd6 18. Rfc1 Rac8 19. Nf4 Bf7 20. Bh3 dxc4 21. Nxc4 Nxc4 22. bxc4 e5 23. Bxc8 exf4 24. Bd7 f3 25. Bg4 Ng5 26. h4 h5 27. hxg5 hxg4 28. d5 cxd5 29. c5 fxg5 30. c6 Be6 31. c7 Qa6 32. c8Q Rxc8 33. Rxc8+ Bxc8 34. Rc7 1-0

[Event "Chicago op 24th"]
[Site "Chicago"]
[Date "2015.05.24"]
[Round "7"]
[White "Polak, Alexander"]
[Black "Colas, Joshua"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2122"]
[BlackElo "2292"]
[PlyCount "127"]
[EventDate "2015.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. cxd5 exd5 5. d4 c6 6. Qc2 Be7 7. Bf4 0-0 8. e3 Nbd7 9. h3 Re8 10. Bd3 Nf8 11. 0-0 Ng6 12. Bh2 Bd6 13. Bxd6 Qxd6 14. Rab1 Bd7 15. b4 Rac8 16. Rfc1 Qe7 17. Nd2 Nf8 18. Nb3 b6 19. Nd2 Ne6 20. Nf3 Red8 21. Qe2 g6 22. Ne5 Be8 23. Nd1 Qd6 24. Rc2 c5 25. bxc5 bxc5 26. Ng4 Nxg4 27. Qxg4 c4 28. Be2 Bd7 29. Qh4 Ng7 30. g4 Ba4 31. Rcc1 Bxd1 32. Bxd1 Rb8 33. Qg3 Qxg3+ 34. fxg3 Kf8 35. Bf3 Rxb1 36. Rxb1 Ne6 37. Rb5 c3 38. Rb3 Rc8 39. Rb1 Ng5 40. Bxd5 Nxh3+ 41. Kf1 Ke7 42. Ke2 Kd6 43. Bg2 Ng5 44. Kd3 f5 45. gxf5 gxf5 46. Rc1 Rb8 47. Kxc3 a5 48. Rf1 Ke6 49. Bd5+ Kxd5 50. Rxf5+ Ke4 51. Rxg5 Kxe3 52. Rxa5 Rg8 53. Re5+ Kf3 54. Re7 h5 55. d5 Kxg3 56. d6 h4 57. Kd4 h3 58. Kc5 h2 59. Rh7 Rc8+ 60. Kb6 Rc2 61. a4 Rd2 62. Kc7 Rc2+ 63. Kd8 Ra2 64. d7 1/2-1/2

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.20"]
[Round "6"]
[White "Ikonnikov, Vyacheslav"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2570"]
[PlyCount "59"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 a6 5. a4 g6 6. a5 Bg7 7. e3 0-0 8. Qb3 Qd6 9. Bd2 Nbd7 10. cxd5 cxd5 11. Na4 Re8 12. Be2 e5 13. Bb4 Qb8 14. dxe5 Nxe5 15. Nb6 Ra7 16. 0-0 Nfg4 17. g3 Nxf3+ 18. Bxf3 d4 19. Bd5 Be6 20. Bxe6 Rxe6 21. Qd1 Nxe3 22. fxe3 dxe3 23. Qd7 Qe8 24. Qxe8+ Rxe8 25. Bc3 Bf8 26. b4 f5 27. Rfd1 Bh6 28. Rd7 e2 29. Kg2 f4 30. gxf4 1-0

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.20"]
[Round "5"]
[White "Polak, Alexander"]
[Black "Slingerland, Fred"]
[Result "1-0"]
[ECO "B67"]
[BlackElo "2330"]
[PlyCount "107"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 b5 10. Bxf6 gxf6 11. Kb1 Qb6 12. Nb3 h5 13. f5 0-0-0 14. Qe2 Kb7 15. g3 h4 16. fxe6 fxe6 17. Qf3 Be7 18. Bh3 hxg3 19. hxg3 Rh7 20. Ne2 a5 21. Nf4 a4 22. Nc1 Ne5 23. Qg2 f5 24. Nxe6 Rdh8 25. Bxf5 Rxh1 26. Rxh1 Rxh1 27. Qxh1 a3 28. Nb3 axb2 29. Ned4 Qc7 30. Qe1 Ka6 31. Bxd7 Nxd7 32. Qb4 Qb6 33. a4 Bf6 34. axb5+ Ka7 35. Qa4+ Kb7 36. Qc4 Kb8 37. Nc6+ Kb7 38. Nbd4 Bxd4 39. Nxd4 Nc5 40. Qd5+ Kc7 41. Qc6+ Qxc6 42. bxc6 Nxe4 43. g4 d5 44. Kxb2 Kd6 45. c3 Kc7 46. Kb3 Kb6 47. Kb4 Kc7 48. Kb5 Nxc3+ 49. Kc5 Ne4+ 50. Kxd5 Nf6+ 51. Kc5 Nxg4 52. Nb5+ Kd8 53. Kd6 Nf6 54. c7+ 1-0

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.19"]
[Round "3"]
[White "Barendse, Ted"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "2134"]
[PlyCount "112"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Qe2 0-0 14. Ne5 Bd6 15. f4 Qc7 16. Rhe1 c5 17. dxc5 Nxc5 18. Kb1 Rfd8 19. c4 Na4 20. Rc1 Bc5 21. Be3 Bd4 22. Bxd4 Rxd4 23. Qc2 Qa5 24. Red1 Rxf4 25. Nd7 Nxd7 26. Rxd7 Nc5 27. Rd2 Rxc4 28. Qxc4 Qxd2 29. Ne4 Nxe4 30. Qxe4 Qd7 31. a3 Rd8 32. Ka1 Rc8 33. Rf1 Rc5 34. g4 Qc6 35. Qf4 Qc7 36. Qe3 b6 37. Rd1 Qe7 38. Qe4 Rc8 39. Qa4 Rd8 40. Rc1 e5 41. Re1 Rd6 42. Qe4 a5 43. Qa8+ Rd8 44. Qc6 Qf6 45. Qb5 Qe6 46. Rc1 e4 47. Re1 e3 48. g5 e2 49. Qxe2 Qxe2 50. Rxe2 hxg5 51. Re5 f6 52. Re7 g4 53. Kb1 f5 54. Kc2 f4 55. Re4 f3 56. Rxg4 f2 0-1

[Event "Delft Prinsenstad op-A 7th"]
[Site "Delft"]
[Date "2014.04.19"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Van den Doel, Erik"]
[Result "0-1"]
[ECO "A29"]
[BlackElo "2553"]
[PlyCount "78"]
[EventDate "2014.04.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d3 d5 5. cxd5 Nxd5 6. g3 Be7 7. Bg2 Be6 8. 0-0 0-0 9. Bd2 Qd7 10. Ng5 Bxg5 11. Bxg5 Nd4 12. Rc1 c5 13. Bd2 b6 14. b3 Rad8 15. Nxd5 Bxd5 16. Bc3 Bxg2 17. Kxg2 f5 18. Bxd4 exd4 19. f4 Rfe8 20. Rf2 Re3 21. Kg1 a5 22. Qc2 h5 23. Qc4+ Kh7 24. Rc2 Qe7 25. a3 Rd6 26. b4 axb4 27. axb4 h4 28. bxc5 Rg6 29. Kf1 hxg3 30. hxg3 Rexg3 31. Rh2+ Rh6 32. Rxh6+ Kxh6 33. Qg8 Qe3 34. Qh8+ Kg6 35. Qh2 Qxf4+ 36. Qf2 Qh4 37. e4 dxe3 38. Qh2 Rf3+ 39. Kg1 Qe1+ 0-1

[Event "Leiden Noteboom Memorial 74th"]
[Site "Leiden"]
[Date "2014.03.02"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Van Ketel, Raoul"]
[Result "0-1"]
[ECO "E49"]
[BlackElo "2254"]
[PlyCount "84"]
[EventDate "2014.02.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9. Ne2 Qc7 10. Bd3 e5 11. 0-0 Nc6 12. Qc2 Be6 13. Bb2 Rfd8 14. Bf5 Bc4 15. Bd3 Na5 16. Bxc4 Nxc4 17. Rfd1 b6 18. Rab1 Rac8 19. Qa4 Na5 20. dxe5 Qxe5 21. c4 Qe8 22. Qc2 Qe4 23. Rxd8+ Rxd8 24. Rd1 Rc8 25. Qxe4 Nxe4 26. Rd7 Nxc4 27. Bc1 a5 28. Kf1 Kf8 29. Nf4 Ke8 30. Rb7 Rd8 31. Ke2 Nc3+ 32. Kf3 Rd1 33. Rb8+ Kd7 34. Bb2 Nxb2 35. Rxb6 Nc4 36. Rb7+ Kc6 37. Rb8 Ne5+ 38. Kg3 g5 39. Nh5 Ne4+ 40. Kh3 Nxf2+ 41. Kg3 Ne4+ 42. Kh3 f5 0-1

[Event "Leiden Noteboom Memorial 74th"]
[Site "Leiden"]
[Date "2014.03.01"]
[Round "4"]
[White "Polak, Alexander"]
[Black "De Ruiter, Danny"]
[Result "1-0"]
[ECO "B49"]
[BlackElo "2236"]
[PlyCount "69"]
[EventDate "2014.02.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 159 Extra"]
[Source "ChessBase"]
[SourceDate "2014.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2014.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. Be3 Nf6 8. 0-0 Bb4 9. Na4 Be7 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Qxc8 13. e5 Nd5 14. Bc1 Bc5 15. c4 Ne7 16. b3 0-0 17. Bb2 Ng6 18. Qc2 Qc7 19. Qe4 f5 20. exf6 gxf6 21. Rad1 Bd6 22. g3 Rf7 23. f4 f5 24. Qe3 Bf8 25. Bh5 Bg7 26. Bxg6 hxg6 27. Bxg7 Rxg7 28. c5 Rb4 29. Rd6 Re4 30. Qc3 Re2 31. a3 a5 32. Rfd1 Qa7 33. Qxg7+ Kxg7 34. Rxd7+ Qxd7 35. Rxd7+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "Polak, Alexander"]
[Black "Willemze, Thomas"]
[Result "0-1"]
[ECO "A46"]
[BlackElo "2416"]
[PlyCount "64"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 Nc6 5. b3 Qa5+ 6. Nbd2 cxd4 7. exd4 Qc3 8. Rb1 Nb4 9. 0-0 Nxd3 10. cxd3 Qxd3 11. Ne5 Qb5 12. Ndc4 d6 13. Qd3 Qa6 14. Nf3 d5 15. Nce5 Qxd3 16. Nxd3 Ne4 17. Bf4 f6 18. Rbc1 g5 19. Be3 Bd7 20. Nc5 Nxc5 21. dxc5 e5 22. Rfe1 Kf7 23. Red1 Bc6 24. Ne1 d4 25. Bd2 g4 26. a4 Bd5 27. Rb1 Bxc5 28. Nd3 Bd6 29. Bb4 Bxb4 30. Nxb4 Be4 31. Rbc1 Rac8 32. Kf1 a5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Termeulen, Albert"]
[Result "1-0"]
[ECO "B09"]
[BlackElo "2158"]
[PlyCount "93"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Qd3 0-0 8. Qb5 Qc7 9. Be3 a6 10. Qb6 Qxb6 11. cxb6 Nc6 12. 0-0-0 Be6 13. Nd4 Nxd4 14. Bxd4 Nd7 15. a4 Bxd4 16. Rxd4 Nxb6 17. Rb4 Nd7 18. Rxb7 Rfc8 19. Nd5 Kf8 20. Nb6 Nc5 21. Nxc8 Nxb7 22. Nb6 Rb8 23. b4 a5 24. Bc4 Kg7 25. Bxe6 fxe6 26. c3 Nd8 27. bxa5 Nc6 28. Kc2 Nxa5 29. Rb1 Nc6 30. Nc4 Rc8 31. Ra1 d5 32. exd5 exd5 33. Nb6 Rd8 34. a5 d4 35. a6 Na7 36. Nc4 Kf6 37. Rb1 Rc8 38. Kd3 dxc3 39. Kxc3 h5 40. Rb7 Ra8 41. Kb4 Nc6+ 42. Kb5 Nd4+ 43. Kb6 Rc8 44. Ne5 Rc2 45. a7 Ra2 46. Kc7 Ne6+ 47. Kb8 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.18"]
[Round "5"]
[White "Aalders, Peter"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1903"]
[PlyCount "32"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. Qd2 g6 8. e4 dxe4 9. Nxe4 Ndf6 10. Nxf6+ Nxf6 11. Bc4 Bg7 12. Ne5 0-0 13. h3 Nd5 14. Bh2 Be6 15. 0-0 Nc7 16. Rad1 Bxe5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.11"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Van Dorp, Quirinius"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "99"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 d6 6. Na4 Na5 7. Nxc5 Nxc4 8. dxc4 dxc5 9. Qxd8+ Kxd8 10. Nxe5 Re8 11. Nxf7+ Ke7 12. Ng5 h6 13. e5 hxg5 14. exf6+ gxf6 15. Be3 Be6 16. Bxc5+ Kf7 17. 0-0-0 b6 18. Be3 Bxc4 19. Rd7+ Re7 20. Rxe7+ Kxe7 21. h4 gxh4 22. Rxh4 Be6 23. a3 Rg8 24. g3 a5 25. Bf4 Kd8 26. Rh6 Rf8 27. Kd2 Bd7 28. Be3 f5 29. Ke2 Re8 30. Kf3 Kc8 31. Kf4 Re4+ 32. Kg5 Rc4 33. c3 a4 34. Rh8+ Kb7 35. Rd8 Bc8 36. Rh8 Re4 37. Rh7 Kc6 38. Rh6+ Kb7 39. Rh4 Rg4+ 40. Rxg4 fxg4 41. Kf4 Kc6 42. f3 gxf3 43. Kxf3 Kd5 44. g4 Kc4 45. Bf4 Kb3 46. Bxc7 Kxb2 47. Bxb6 Kxa3 48. Bc5+ Kb3 49. Bb4 a3 50. Bxa3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.04"]
[Round "3"]
[White "Kuipers, Joris"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "D15"]
[PlyCount "33"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 a6 5. Bf4 b5 6. c5 Nh5 7. Bxb8 Rxb8 8. e4 Nf6 9. Ne5 Bb7 10. exd5 Nxd5 11. Qh5 g6 12. Qf3 f6 13. Nd3 e6 14. g3 Be7 15. h4 Nxc3 16. bxc3 Qd5 17. Nf4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[ECO "E15"]
[BlackElo "2239"]
[PlyCount "114"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb7 6. Bg2 Bb4+ 7. Bd2 a5 8. 0-0 0-0 9. a3 Bxd2 10. Nbxd2 d6 11. Qc2 Nbd7 12. e4 e5 13. d5 g6 14. Ne1 Qe7 15. Nd3 c6 16. dxc6 Bxc6 17. a4 Rfd8 18. Rfd1 Nf8 19. Nc1 Rac8 20. Qb2 Qb7 21. f3 Ne6 22. Bh3 Nh5 23. Nf1 Rc7 24. Ne3 f5 25. Nd5 Bxd5 26. exd5 Ng5 27. Bg2 Re7 28. h4 Nf7 29. Qf2 Rde8 30. Ne2 Qc7 31. Nc3 f4 32. g4 Ng3 33. g5 h6 34. gxh6 Nxh6 35. Bh3 Nhf5 36. Ne4 Nxe4 37. fxe4 Ng3 38. Be6+ Kh8 39. Rd3 Nxe4 40. Qe2 Ng3 41. Rxg3 fxg3 42. h5 Qc5+ 43. Kg2 Rf8 44. Kxg3 Qd4 45. hxg6 Qf4+ 46. Kg2 Qg5+ 47. Qg4 Qxg4+ 48. Bxg4 Kg7 49. Bh5 Rf5 50. Rh1 Re8 51. Kg3 Rg5+ 52. Bg4 Rxg6 53. Rb1 Rf8 54. Rh1 Rf4 55. Rh4 Rd4 56. Kf3 Rf6+ 57. Ke3 Rff4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.21"]
[Round "1"]
[White "Schenkelaars, Robin"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "88"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. c3 Qb6 7. a3 a5 8. 0-0 Nc6 9. Nbd2 cxd4 10. cxd4 a4 11. Nb1 Bg4 12. Nc3 Bxf3 13. Bxf3 Qxd4 14. Qxd4 Nxd4 15. Bd1 Nb3 16. Bxb3 axb3 17. Nb5 0-0-0 18. Nd4 Bc5 19. Nxb3 Ba7 20. Bd2 Ne7 21. Rac1+ Nc6 22. Na5 Kd7 23. Nxc6 bxc6 24. Rc2 c5 25. Rd1 c4 26. Kf1 Rb8 27. Bb4 Rhc8 28. Rc3 Rb5 29. Rf3 Ke8 30. Rh3 h6 31. f4 Rcb8 32. b3 cxb3 33. Rxb3 Bc5 34. Rdb1 Kd7 35. Ke2 g5 36. g3 gxf4 37. gxf4 Bxb4 38. Rxb4 Rxb4 39. Rxb4 Rxb4 40. axb4 Kc6 41. Kd3 Kb5 42. Kd4 Kxb4 43. f5 exf5 44. Kxd5 Kc3 0-1

[Event "Leiden Noteboom Memorial-A 73rd"]
[Site "Leiden"]
[Date "2013.02.09"]
[Round "2"]
[White "Beukema, Stefan"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2269"]
[PlyCount "91"]
[EventDate "2013.02.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Ne4 Nxe4 14. Qxe4 Nf6 15. Qe2 Qd5 16. c4 Qe4 17. Rde1 Qxe2 18. Rxe2 0-0 19. Ne5 Rfd8 20. Be3 Rac8 21. g4 c5 22. dxc5 Bxc5 23. Bxc5 Rxc5 24. f3 Nd5 25. Kb1 Nf4 26. Re4 f6 27. Ng6 Nxg6 28. hxg6 e5 29. Kc2 b5 30. Kc3 Kf8 31. b4 Rxc4+ 32. Rxc4 bxc4 33. Kxc4 Rd4+ 34. Kc5 Rf4 35. Rd1 Ke7 36. Rd3 f5 37. Ra3 e4 38. fxe4 fxg4 39. b5 Ke8 40. Kd5 Rf3 41. Rxa7 Rd3+ 42. Ke6 Kd8 43. b6 Kc8 44. Rxg7 Rd8 45. Rc7+ Kb8 46. Ke7 1-0

[Event "Leiden LCT op-B 06th"]
[Site "Leiden"]
[Date "2012.07.09"]
[Round "4"]
[White "Vergeer, Michiel"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "1818"]
[PlyCount "105"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nd7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Kb1 0-0 14. Ne4 Nxe4 15. Qxe4 Nf6 16. Qe2 Qd5 17. c4 Qe4+ 18. Qxe4 Nxe4 19. Be3 b5 20. Ne5 Rac8 21. d5 cxd5 22. cxd5 exd5 23. Rxd5 a6 24. Ng4 Rc4 25. Ne5 Rb4 26. Rc1 Nf6 27. Rd3 Nxh5 28. Nc6 Re4 29. Nxe7+ Rxe7 30. Bc5 Re2 31. Bxf8 Kxf8 32. Rc8+ Ke7 33. Re3+ Rxe3 34. fxe3 Nf6 35. Kc2 Nd5 36. Kd2 Kd7 37. Ra8 Nc7 38. Rg8 g6 39. Kd3 Nd5 40. Kd4 Nb4 41. a3 Nc6+ 42. Kc5 Na5 43. Ra8 Nc4 44. Rxa6 Nxe3 45. Rd6+ Kc7 46. Rf6 Nc4 47. Rxf7+ Kc8 48. Rh7 h5 49. Rg7 Nxb2 50. Rxg6 Nc4 51. Kxb5 Nxa3+ 52. Ka4 Nc2 53. Rc6+ 1-0

[Event "Leiden LCT op-B 06th"]
[Site "Leiden"]
[Date "2012.07.08"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Baak, Karl"]
[Result "1/2-1/2"]
[ECO "C13"]
[PlyCount "47"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Nxf6+ Bxf6 7. Bxf6 Qxf6 8. Nf3 Nd7 9. Qd2 0-0 10. 0-0-0 c5 11. h4 cxd4 12. Qxd4 Qxd4 13. Rxd4 e5 14. Rb4 f6 15. Bd3 Nc5 16. Bc4+ Kh8 17. Bd5 Bf5 18. Rd1 Rac8 19. Ne1 Rc7 20. f3 Rfc8 21. g4 Be6 22. Bxe6 Nxe6 23. c3 Kg8 24. Nc2 1/2-1/2

[Event "Leiden LCT op-B 06th"]
[Site "Leiden"]
[Date "2012.07.07"]
[Round "2"]
[White "Van Breda, Tim"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B11"]
[PlyCount "88"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. f4 d5 3. Nc3 h6 4. Nf3 dxe4 5. Nxe4 Bf5 6. Ng3 Bh7 7. Bc4 Nd7 8. f5 Qa5 9. Bd3 Qb6 10. Qe2 Ngf6 11. a4 a6 12. a5 Qc7 13. Be4 g5 14. d4 Nd5 15. Ne5 Bg7 16. Nf3 0-0-0 17. Bxd5 cxd5 18. Ra3 Kb8 19. 0-0 g4 20. Nh5 gxf3 21. Qd3 fxg2 22. Rf3 Be5 23. dxe5 Nxe5 24. Qd4 Nxf3+ 25. Rxf3 Qc4 26. Bf4+ Ka8 27. Qe5 Qe4 28. Re3 Qxe5 29. Rxe5 Rd7 30. Ng3 Rc8 31. c3 Rc5 32. Bxh6 Rxa5 33. Kxg2 Ra2 34. Re2 Rd6 35. Bf4 Rb6 36. Rxe7 Rbxb2+ 37. Kf3 Rf2+ 38. Ke3 Bxf5 39. h4 Bg6 40. h5 Bxh5 41. Re8+ Ka7 42. Kd3 Rxf4 43. Nxh5 Rf3+ 44. Kd4 Rd2+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.26"]
[Round "7"]
[White "Polak, Alexander"]
[Black "De Jeu, Marcel"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "1852"]
[BlackElo "1929"]
[PlyCount "59"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Na6 7. 0-0 c5 8. d5 Bg4 9. Bxa6 bxa6 10. h3 Bxf3 11. Qxf3 Rb8 12. Rb1 Nd7 13. Bd2 Qc7 14. Qe2 c4 15. f5 Ne5 16. Nd1 a5 17. Ne3 a4 18. Bc3 Rfc8 19. a3 Nd7 20. fxg6 hxg6 21. Qf2 Rf8 22. Bxg7 Kxg7 23. Nf5+ gxf5 24. Qg3+ Kh8 25. Qh4+ Kg7 26. Qg5+ Kh8 27. Rf4 Nf6 28. Rh4+ Nh7 29. Qh6 a6 30. Qxh7# 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.19"]
[Round "6"]
[White "Van den Berg, Ad"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2206"]
[BlackElo "1852"]
[PlyCount "45"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 e6 2. e4 d5 3. exd5 exd5 4. d4 Nf6 5. c4 Be7 6. Nc3 0-0 7. h3 Re8 8. Be3 c6 9. Bd3 h6 10. 0-0 Be6 11. c5 Qc7 12. Qd2 b6 13. b4 bxc5 14. bxc5 Bd8 15. Ne5 Qc8 16. f4 Bf5 17. g4 Bxd3 18. Qxd3 h5 19. f5 hxg4 20. hxg4 Nbd7 21. Nxd7 Qxd7 22. g5 Ne4 23. Nxe4 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.12"]
[Round "5"]
[White "Polak, Alexander"]
[Black "Coene, Igor"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "1852"]
[BlackElo "2207"]
[PlyCount "105"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Bb4 7. Nxc6 dxc6 8. Qxd8+ Kxd8 9. Bd2 e5 10. 0-0-0 Ke7 11. Nd5+ Nxd5 12. cxd5 Bxd2+ 13. Rxd2 cxd5 14. Rxd5 Be6 15. Rxe5 Rac8+ 16. Kd2 Rhd8+ 17. Bd3 b5 18. b3 a6 19. Rg5 g6 20. Rg3 h5 21. Rc1 b4 22. Rxc8 Rxc8 23. Rg5 Rc6 24. Ra5 Bc8 25. Ke3 f6 26. Kd4 Rd6+ 27. Rd5 Rc6 28. Rc5 Rd6+ 29. Rd5 Rc6 30. Bc4 Bb7 31. Rc5 Rb6 32. Bd5 Bxd5 33. exd5 h4 34. Rc6 Rb8 35. Rxa6 h3 36. gxh3 Rh8 37. Re6+ Kf7 38. Re3 Ra8 39. d6 Rxa2 40. d7 Rd2+ 41. Rd3 Rxd3+ 42. Kxd3 Ke7 43. Kc4 Kxd7 44. Kxb4 Kd6 45. Ka5 f5 46. b4 Kc6 47. Ka6 Kc7 48. b5 Kb8 49. Kb6 g5 50. Kc6 f4 51. f3 Kc8 52. b6 Kb8 53. b7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.05"]
[Round "4"]
[White "Weiland, Harro"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "1867"]
[BlackElo "1852"]
[PlyCount "78"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nh3 e6 8. Nf4 Bh7 9. Be3 Qa5+ 10. Qd2 Bb4 11. c3 Be7 12. Bd3 Bxd3 13. Qxd3 Nf6 14. Bd2 Nbd7 15. c4 Bb4 16. Rd1 0-0-0 17. 0-0 Bxd2 18. Qxd2 Qxd2 19. Rxd2 Nb6 20. c5 Nc4 21. Rc2 Rxd4 22. Nge2 Re4 23. f3 Rxf4 24. Nxf4 Ne3 25. Rff2 Nxc2 26. Rxc2 Rd8 27. Kf2 g5 28. hxg5 hxg5 29. Ne2 Rd5 30. Ng3 a5 31. b3 a4 32. Ne4 Nxe4+ 33. fxe4 axb3 34. axb3 Rd3 35. Rb2 b6 36. cxb6 Kb7 37. g4 Kxb6 38. Kg2 Re3 39. Rf2 Rxe4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.30"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Van Dorp, Quirinius"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1852"]
[BlackElo "2042"]
[PlyCount "66"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 d6 5. d3 Bg4 6. Be3 Nd4 7. Bxd4 Bxd4 8. h3 Bh5 9. g4 Bxc3+ 10. bxc3 Bg6 11. Rb1 Rb8 12. Qc1 c6 13. Qe3 Qa5 14. Kd2 Ne7 15. Nh4 f6 16. f4 exf4 17. Qxf4 Kd7 18. Nf5 Bxf5 19. gxf5 d5 20. exd5 Nxd5 21. Bxd5 Qxd5 22. Rhg1 Rhg8 23. Rb4 c5 24. Re4 Qd6 25. Qxd6+ Kxd6 26. Reg4 Rbe8 27. Rxg7 Rxg7 28. Rxg7 Re7 29. Rxe7 Kxe7 30. Ke3 Kd6 31. Ke4 b5 32. a3 a5 33. c4 bxc4 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.22"]
[Round "2"]
[White "Van Lankveld, Koen"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "1400"]
[BlackElo "1852"]
[PlyCount "68"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[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. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. 0-0 Be7 7. b3 0-0 8. Nc3 a5 9. a3 Re8 10. Qc2 Nb6 11. Na2 a4 12. c5 axb3 13. Qxb3 Nc4 14. Nb4 Ne4 15. Rd1 Qa5 16. Nd2 Nexd2 17. Bxd2 Qa4 18. Qxa4 Rxa4 19. Nc2 e5 20. Bb4 Bf6 21. e3 Bf5 22. Ne1 exd4 23. exd4 Rea8 24. Bc3 Rxa3 25. Rac1 Rb3 26. Ba1 Na3 27. Nf3 Bg4 28. Rc3 Rxc3 29. Bxc3 Nb5 30. Bb2 Ra2 31. Re1 Kf8 32. Ba1 Bxf3 33. Bh3 Rd2 34. Bd7 Rd1 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.15"]
[Round "1"]
[White "Polak, Alexander"]
[Black "Termeulen, Albert"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "1852"]
[BlackElo "2111"]
[PlyCount "76"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Qd3 0-0 8. cxd6 exd6 9. Bd2 Na6 10. Qb5 Qc7 11. 0-0-0 Nc5 12. e5 dxe5 13. fxe5 a6 14. Qb4 a5 15. Qa3 Nfd7 16. Nd5 Qb8 17. Bf4 Ne6 18. Ne7+ Kh8 19. Nxc8 Qxc8 20. Qe7 Ndc5 21. Qh4 Qc6 22. Bh6 Rac8 23. Bxg7+ Kxg7 24. Qc4 a4 25. c3 a3 26. Rd6 axb2+ 27. Kxb2 Qc7 28. Be2 b5 29. Qb4 Ra8 30. Bxb5 Rfb8 31. Ka1 Ra5 32. c4 Rba8 33. Rd2 Ra3 34. Kb1 Qa7 35. Qb2 Nd3 36. Qa1 Qa5 37. Kc2 Rxa2+ 38. Qxa2 Nb4+ 0-1

[Event "Leiden LCT op-B 4th"]
[Site "Leiden"]
[Date "2010.07.12"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Bekker, Michael"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1737"]
[BlackElo "1651"]
[PlyCount "140"]
[EventDate "2010.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 b5 6. Qd2 Bb7 7. f3 Qc7 8. Nb3 Nf6 9. a4 b4 10. a5 Nc6 11. Bb6 Qe5 12. Bd4 Nxd4 13. Qxd4 Qf4 14. N1d2 d5 15. Qb6 Rb8 16. Bxa6 Bc8 17. Bb5+ Bd7 18. Bxd7+ Nxd7 19. Qd4 Qg5 20. exd5 Qxg2 21. 0-0-0 Rc8 22. dxe6 fxe6 23. Rhe1 e5 24. Rxe5+ Nxe5 25. Qxe5+ Be7 26. Re1 0-0 27. Qe6+ Kh8 28. Qxe7 Rxf3 29. Qe4 Rf2 30. Qxg2 Rxg2 31. a6 Rg6 32. Nc5 h6 33. Ndb3 Ra8 34. Nd4 Rg2 35. Rd1 Rxh2 36. Nde6 g5 37. Rd8+ Rxd8 38. Nxd8 g4 39. Kd1 g3 40. Nf7+ Kh7 41. Ne5 Rf2 42. Ke1 Rf5 43. a7 Rxe5+ 44. Kf1 Re8 45. Na6 Ra8 46. Nxb4 Rxa7 47. Kg2 Rg7 48. Nd5 h5 49. Nf4 Kh6 50. Kh3 Rg4 51. Ng2 Kg5 52. b3 h4 53. c4 Re4 54. c5 Rb4 55. c6 Rxb3 56. c7 Rc3 57. Ne1 g2+ 58. Kxg2 Rxc7 59. Nf3+ Kg4 60. Ne5+ Kf4 61. Nd3+ Kg5 62. Nf2 Rc2 63. Kf3 Rc3+ 64. Kg2 Rg3+ 65. Kh2 Kf4 66. Nh1 Rf3 67. Kg2 Ke3 68. Kh2 Rf1 69. Kg2 Ke2 70. Kh2 Kf3 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "8"]
[White "Bok, Gidius"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1479"]
[BlackElo "1544"]
[PlyCount "46"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 Nc6 8. 0-0 Ng4 9. Nxc6 bxc6 10. Qd2 Nxe3 11. Qxe3 0-0 12. Rad1 Qb6 13. Qxb6 axb6 14. Rd3 Be6 15. Bxe6 fxe6 16. a3 d5 17. Re1 d4 18. Ne2 e5 19. c3 c5 20. g3 c4 21. Rd2 d3 22. Nc1 Bh6 23. Rdd1 d2 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "5"]
[White "De Block, Yordi"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1337"]
[BlackElo "1544"]
[PlyCount "76"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. Ng5 e6 5. d3 h6 6. Nf3 d5 7. exd5 exd5 8. Qe2+ Be7 9. Bb5 Qa5+ 10. Nc3 d4 11. 0-0 dxc3 12. Bxc6+ bxc6 13. bxc3 Nf6 14. Ne5 Qb6 15. Re1 Be6 16. Qf3 Rc8 17. Be3 0-0 18. Qg3 Kh8 19. Nf3 Nd5 20. Bd2 Qb8 21. Qxb8 Rxb8 22. c4 Nb4 23. Bxb4 cxb4 24. Ne5 Rb6 25. Nxf7+ Rxf7 26. Rxe6 Bc5 27. Re8+ Kh7 28. Re2 Bd4 29. Rb1 c5 30. Kf1 Ra6 31. f3 Rxa2 32. Ke1 a5 33. Kd1 a4 34. Re6 Ra7 35. f4 a3 36. Re4 Rb2 37. Ra1 a2 38. Kd2 Bc3+ 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "1"]
[White "Fu, Edouard"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1096"]
[BlackElo "1544"]
[PlyCount "94"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 g6 5. 0-0 Nc6 6. d4 cxd4 7. Nxd4 Bg7 8. Be3 Ng4 9. Nxc6 bxc6 10. Bd2 0-0 11. h3 Nf6 12. Rb1 Nxe4 13. Bxf7+ Rxf7 14. Nxe4 Ba6 15. Re1 h6 16. Bc3 Bxc3 17. Nxc3 Qb6 18. Qd2 Raf8 19. Re3 d5 20. Na4 Qb5 21. b3 d4 22. Rg3 g5 23. c4 dxc3 24. Nxc3 Qc5 25. Ne4 Qf5 26. Re1 Qd5 27. Qe3 e5 28. Rg4 Bc8 29. Rg3 Bf5 30. Nc3 Qd4 31. Qxd4 exd4 32. Ne2 c5 33. Rc1 d3 34. Nc3 Rd8 35. Rd1 d2 36. Re3 Bc2 37. Rf1 d1Q 38. Nxd1 Rxd1 39. Rxd1 Bxd1 40. Re5 Rc7 41. Re8+ Kf7 42. Re1 Bh5 43. f3 c4 44. bxc4 Rxc4 45. Kf2 Ra4 46. Ra1 Kf6 47. Ke3 Ra3+ 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "3"]
[White "Ozdemir, Sena"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1369"]
[BlackElo "1544"]
[PlyCount "35"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nf6 3. b3 e6 4. Bb2 c5 5. Nf3 Nc6 6. c4 Be7 7. a3 a6 8. Qc2 dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. 0-0 Qd7 12. Nc3 Rd8 13. Be4 Nxe4 14. Nxe4 0-0 15. Nxc5 Bxc5 16. Qxc5 Na5 17. Qc3 Nc6 18. Qxg7# 1-0

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "9"]
[White "Polak, Alexander"]
[Black "Bekkink, Sereyo"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "1544"]
[BlackElo "1729"]
[PlyCount "27"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 Bd7 9. Qd2 0-0 10. 0-0-0 Re8 11. h4 h5 12. Bh6 Bh8 13. Qg5 Nxd4 14. Qxg6+ 1-0

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Keuning, Selwin"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1544"]
[BlackElo "1475"]
[PlyCount "39"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. Bd3 Bxd3 9. Qxd3 e6 10. Bf4 Ngf6 11. 0-0-0 Nd5 12. Be3 Bd6 13. Ne4 Be7 14. g4 Qa5 15. Kb1 0-0-0 16. Nfd2 Qc7 17. c4 Nf4 18. Qb3 f5 19. gxf5 exf5 20. Ng3 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Mostertman, Olav"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1544"]
[BlackElo "1441"]
[PlyCount "80"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. e3 d6 5. cxb5 a6 6. bxa6 Bxa6 7. Bxa6 Rxa6 8. Nf3 g6 9. Nc3 Bg7 10. 0-0 0-0 11. Qc2 Nbd7 12. e4 Ng4 13. h3 Nge5 14. Nxe5 Nxe5 15. f4 Nd7 16. b3 Qb6 17. Kh1 Rfa8 18. Bb2 Rb8 19. Na4 Qb4 20. Bxg7 Kxg7 21. Qc3+ Nf6 22. Qxb4 Rxb4 23. Nc3 Nxe4 24. Nxe4 Rxe4 25. Kh2 Rd4 26. Kg3 Rxd5 27. Rfe1 Kf6 28. Re2 Rd3+ 29. Kf2 Rxb3 30. Rxe7 Rb2+ 31. Re2 Rxe2+ 32. Kxe2 Ra3 33. Kf1 Kf5 34. Rd1 Ke6 35. Rd2 d5 36. Re2+ Kd6 37. Kf2 c4 38. h4 c3 39. Rc2 Kc5 40. Ke3 Kc4 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Vlaming, Halana"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1544"]
[BlackElo "1367"]
[PlyCount "187"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bc4 Nf6 6. Nf3 Bg4 7. h3 Bh5 8. Bf4 e6 9. a3 Be7 10. g4 Bg6 11. Qe2 Nbd7 12. 0-0-0 b5 13. Bb3 b4 14. Na2 Ne4 15. Qe1 Qb5 16. axb4 a5 17. bxa5 Rxa5 18. Nd2 Rxa2 19. Nxe4 Ra1+ 20. Kd2 Bb4+ 21. c3 Rxd1+ 22. Bxd1 Bxe4 23. Qxe4 Be7 24. Kc1 Nf6 25. Qe5 Qb6 26. g5 Nd5 27. Qxg7 Rf8 28. Be3 Qa6 29. Qxh7 Qa1+ 30. Qb1 Qxb1+ 31. Kxb1 Nxe3 32. fxe3 Bxg5 33. e4 Ke7 34. Ba4 Kd6 35. Kc2 Rh8 36. Kd3 Rh4 37. e5+ Kc7 38. Kc4 Be7 39. Rf1 Rh7 40. Bc2 Rg7 41. Kd3 Rg3+ 42. Ke4 Rg7 43. Bd1 Rh7 44. Bg4 Kd7 45. c4 Kc7 46. d5 cxd5+ 47. cxd5 exd5+ 48. Kxd5 Bb4 49. Rf4 Be7 50. e6 fxe6+ 51. Kxe6 Kd8 52. Rd4+ Kc7 53. Rd7+ Kc6 54. Rxe7 Rh6+ 55. Kf5 Kc5 56. Kg5 Rb6 57. Re2 Rb8 58. h4 Rg8+ 59. Kf4 Rf8+ 60. Bf5 Rh8 61. Kg5 Rg8+ 62. Bg6 Rh8 63. Rd2 Kc4 64. h5 Kc5 65. h6 Kc6 66. Kf6 Rxh6 67. Kg5 Rh8 68. Kf5 Rb8 69. Ke4 Kc5 70. Kd3 Rd8+ 71. Kc3 Rc8 72. Bf5 Rc7 73. Rd7 Rc6 74. Be4 Rc8 75. Bb7 Rb8 76. b4+ Kb6 77. Kc4 Re8 78. b5 Re5 79. Bc6 Rf5 80. Kd4 Rf4+ 81. Ke5 Rf8 82. Ke6 Rb8 83. Kd6 Rc8 84. Rb7+ Ka5 85. Kd7 Rg8 86. Ra7+ Kb6 87. Ra6+ Kc5 88. Kc7 Rg7+ 89. Bd7 Rg8 90. Rc6+ Kb4 91. b6 Ka5 92. b7 Ka4 93. b8Q Rxb8 94. Kxb8 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "8"]
[White "Polak, Alexander"]
[Black "Senders, Mischa"]
[Result "1-0"]
[ECO "C14"]
[PlyCount "43"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[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 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. Nb5 Qd8 8. c4 a6 9. Nc3 c6 10. f4 dxc4 11. Bxc4 b5 12. Bb3 Nb6 13. Ne4 0-0 14. Nd6 Qd7 15. Nf3 Nd5 16. Bxd5 cxd5 17. Rc1 Bb7 18. Rc3 Bc6 19. Qc2 a5 20. h4 Na6 21. Ng5 Nb4 22. Qxh7# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "9"]
[White "Roeleveld, Koos"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "D79"]
[PlyCount "65"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 c6 5. 0-0 d5 6. cxd5 cxd5 7. d4 0-0 8. Nc3 Nc6 9. Re1 Bf5 10. a3 Ne4 11. e3 Nxc3 12. bxc3 Na5 13. Nh4 Be6 14. e4 dxe4 15. Bxe4 Qc7 16. Qc2 Rac8 17. Bd2 Nb3 18. Rab1 Nxd4 19. cxd4 Qxc2 20. Bxc2 Rxc2 21. Be3 b6 22. Ng2 Rd8 23. Nf4 Bf5 24. Rbd1 Ra2 25. h3 Rxa3 26. g4 Bc8 27. Rc1 Ra4 28. Nd5 Kf8 29. Nxe7 Be6 30. Nc6 Rc8 31. Bf4 Bxd4 32. Nxd4 Rxd4 33. Rxc8+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "7"]
[White "Roelofs, Rik"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "D52"]
[PlyCount "87"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Bd6 7. Bd3 0-0 8. 0-0 Re8 9. cxd5 cxd5 10. Nb5 Bb8 11. Qc2 h6 12. Bh4 a6 13. Nc3 b5 14. Rac1 Bb7 15. Qb3 Bd6 16. Bg3 e5 17. Bb1 Qb8 18. Ne2 e4 19. Nd2 Bxg3 20. Nxg3 Qd6 21. Rc2 Rac8 22. a3 Rxc2 23. Qxc2 Rc8 24. Qd1 Nb6 25. Nb3 Nc4 26. Qe2 Nd7 27. Nf5 Qf6 28. Qg4 Rc7 29. Qf4 Rc8 30. Qg4 Rc7 31. Rc1 Bc8 32. Qf4 Rc6 33. h3 g5 34. Qg4 Ndb6 35. Nxh6+ Qxh6 36. Qe2 Na4 37. Rc2 Qh4 38. Nc1 g4 39. b3 gxh3 40. g3 h2+ 41. Kh1 Bg4 42. gxh4 Bxe2 43. Nxe2 Rg6 44. bxc4 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "5"]
[White "Braggaar, Wessel"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "B78"]
[PlyCount "39"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Kb1 Nc4 13. Bxc4 Rxc4 14. g4 a6 15. h4 h5 16. gxh5 Nxh5 17. Nde2 Re8 18. Bd4 Qa5 19. Bxg7 Kxg7 20. Nd5 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Casteleijn, Robert"]
[Result "1/2-1/2"]
[ECO "B27"]
[PlyCount "46"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Be3 e6 6. Qd2 Nc6 7. Nc3 Nge7 8. Ndb5 0-0 9. 0-0-0 Qa5 10. Kb1 Qb4 11. a3 Bxc3 12. Nxc3 Qa5 13. h4 b6 14. h5 Ne5 15. Ka2 N7c6 16. hxg6 fxg6 17. Be2 Ba6 18. f4 Nf7 19. Qxd7 Bxe2 20. Nxe2 Qb5 21. Nc3 Qc4+ 22. Ka1 Rad8 23. Qc7 Rc8 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Ozdemir, Sena"]
[Result "1-0"]
[ECO "B03"]
[PlyCount "137"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 Nc6 5. Nf3 d6 6. exd6 exd6 7. Nc3 Be7 8. Bd3 0-0 9. 0-0 Bg4 10. Be4 Nxc4 11. Qd3 Bxf3 12. Bxh7+ Kh8 13. Qxf3 Kxh7 14. Qd3+ Kg8 15. Qxc4 Bf6 16. Be3 g6 17. Nd5 Bg7 18. b4 Rc8 19. Rac1 Qh4 20. g3 Qe4 21. f3 Qe6 22. Rfe1 Qd7 23. Bf2 Rfe8 24. Rxe8+ Qxe8 25. Re1 Qd7 26. b5 Nd8 27. Ne7+ Kh8 28. Nxc8 Qxc8 29. Re8+ Kh7 30. Qxf7 Nxf7 31. Rxc8 Ng5 32. Rxc7 Kg8 33. Kg2 Ne6 34. Rxb7 Bxd4 35. Bxd4 Nxd4 36. Rxa7 Nxb5 37. Rb7 Nc3 38. a3 d5 39. Kf2 d4 40. Rd7 Nb1 41. a4 Nc3 42. Rxd4 Nxa4 43. Rxa4 Kg7 44. Rg4 Kf6 45. Rxg6+ Kxg6 46. h4 Kh5 47. Ke3 Kg6 48. g4 Kf6 49. f4 Kg6 50. Ke4 Kf6 51. Kd5 Ke7 52. g5 Kd7 53. h5 Kc7 54. h6 Kb6 55. h7 Kb5 56. h8Q Kb4 57. g6 Kb3 58. g7 Kc3 59. g8Q+ Kd3 60. f5 Ke3 61. f6 Kd3 62. f7 Ke3 63. f8Q Kd3 64. Qh3+ Kc2 65. Qgg2+ Kb1 66. Qff2 Ka1 67. Qhh2 Kb1 68. Qa2+ Kc1 69. Qgd2# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "1"]
[White "Damen, Jip"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "47"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Ng4 8. 0-0-0 Nxe3 9. Qxe3 Nc6 10. Nb3 h5 11. f3 Bh6 12. f4 Qb6 13. Qxb6 Bxf4+ 14. Kb1 axb6 15. Nd5 Be5 16. Nc7+ Kd8 17. Nxa8 Bg4 18. Re1 Nd4 19. Nxb6 Nxb3 20. cxb3 Kc7 21. Nd5+ Kd7 22. Rc1 e6 23. Nb6+ Ke7 24. h3 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "3"]
[White "Looijer, Dave"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B73"]
[PlyCount "88"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. Qd2 0-0 9. 0-0 Bd7 10. f4 Rc8 11. Nxc6 Bxc6 12. Bd3 a6 13. h3 b5 14. b4 Nh5 15. Kh2 Bxc3 16. Qxc3 Bxe4 17. Qd4 Bxd3 18. Qxd3 Qc7 19. Rac1 Qc3 20. Qe4 Nf6 21. Qf3 Qxb4 22. f5 Qe4 23. fxg6 fxg6 24. Bh6 Qxf3 25. Rxf3 Rf7 26. c3 Ne4 27. Re3 d5 28. Rd3 e6 29. Be3 Rfc7 30. Bd4 b4 31. Be5 Rc4 32. Rf3 Nxc3 33. Rf6 R8c6 34. Bxc3 bxc3 35. Rcf1 c2 36. Rf8+ Kg7 37. R8f7+ Kh6 38. Rc1 Rb4 39. g4 Rb1 40. Rff1 Rxc1 41. Rxc1 d4 42. h4 d3 43. g5+ Kg7 44. Kg3 d2 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Schilstra, Laurens"]
[Result "1-0"]
[ECO "B90"]
[PlyCount "77"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. Be2 0-0 10. Qd2 Nbd7 11. 0-0-0 Qc7 12. g4 b5 13. h4 b4 14. Nd5 Bxd5 15. exd5 a5 16. Kb1 a4 17. Nc1 b3 18. cxb3 axb3 19. Nxb3 Nb6 20. Bxb6 Qxb6 21. Rc1 Qa7 22. a3 Rfb8 23. Bc4 Nd7 24. Ka2 Nc5 25. Nxc5 Qxc5 26. Bb3 Qb6 27. Qd3 Ra7 28. Rc6 Qd8 29. g5 Rab7 30. Rc3 Qb6 31. Rhc1 g6 32. Rc8+ Kg7 33. Rxb8 Rxb8 34. Rc6 Qf2 35. Qe4 h6 36. Rc7 Re8 37. Qg4 hxg5 38. Qd7 Kf8 39. Ba4 1-0

[Event "Twente Young Master op-E"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "3"]
[White "Keuning, Selwin"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1034"]
[BlackElo "1349"]
[PlyCount "44"]
[EventDate "2007.08.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. Nxc6 bxc6 11. exd5 cxd5 12. Nxd5 Be6 13. Nxf6+ Bxf6 14. Kb1 Rb8 15. c3 Qxd2 16. Rxd2 Bxc3 17. Rc2 Bf5 18. Bxa7 Rxb2+ 19. Kc1 Rxc2+ 20. Kd1 Rd8+ 21. Bd4 Rxd4+ 22. Bd3 Rxd3+ 0-1

[Event "Twente Young Master op-E"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Bok, Gidius"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1349"]
[BlackElo "1079"]
[PlyCount "113"]
[EventDate "2007.08.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Be3 d6 6. Bxc5 dxc5 7. Nc3 0-0 8. Qd2 Bg4 9. h3 Bh5 10. g4 Bg6 11. 0-0-0 Re8 12. h4 Nxg4 13. h5 Nd4 14. hxg6 Nxf3 15. gxf7+ Kf8 16. fxe8Q+ Qxe8 17. Qe2 Nfh2 18. f3 Nxf3 19. Qxf3+ Nf6 20. Rxh7 Ke7 21. Rxg7+ Kd8 22. Qxf6+ Kc8 23. Rg8 Qxg8 24. Bxg8 Kd7 25. Be6+ Kd6 26. Nb5+ Kc6 27. Bf5+ Kxb5 28. Bd7+ c6 29. Bxc6+ bxc6 30. a4+ Kb6 31. a5+ Kb5 32. c4+ Kb4 33. Qxc6 Rb8 34. b3 Kc3 35. Qb5 Rxb5 36. cxb5 Kb4 37. b6 axb6 38. axb6 c4 39. b7 Kc3 40. b8Q cxb3 41. Qxb3+ Kxb3 42. d4 exd4 43. Rxd4 Kc3 44. e5 Kxd4 45. e6 Kd5 46. e7 Kd6 47. e8Q Kc7 48. Kc2 Kd6 49. Kc3 Kc7 50. Qe6 Kd8 51. Qf7 Kc8 52. Qe7 Kb8 53. Qd7 Ka8 54. Kc4 Kb8 55. Kb5 Ka8 56. Ka6 Kb8 57. Qd8# 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "9"]
[White "Polak, Alexander"]
[Black "Damen, Jip"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "47"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 Nf6 4. Nf3 Nc6 5. d3 h6 6. Be3 Bb6 7. d4 exd4 8. Nxd4 Ba5 9. Qd3 0-0 10. 0-0 Re8 11. Bd5 Nxd4 12. Bxd4 c6 13. Bxf6 Qxf6 14. Bb3 Qg6 15. Rfe1 Bxc3 16. bxc3 d6 17. Rad1 Bg4 18. Qxd6 Bxd1 19. Qxg6 Bxc2 20. Qxf7+ Kh7 21. Bxc2 Rf8 22. e5+ Kh8 23. e6 g5 24. Qh7# 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "7"]
[White "Polak, Alexander"]
[Black "Pijloo, Midoen"]
[Result "1-0"]
[ECO "B87"]
[PlyCount "155"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bg5 b5 8. Bb3 Bb7 9. f3 h6 10. Bh4 Be7 11. 0-0 Qb6 12. Bf2 Qc7 13. Qd3 b4 14. Nce2 d5 15. exd5 Bxd5 16. Ba4+ Bc6 17. Qc4 Kd7 18. Bxc6+ Nxc6 19. Nxc6 Qxc6 20. Rad1+ Kc7 21. Bg3+ Kb7 22. Qxc6+ Kxc6 23. Nd4+ Kb7 24. Rfe1 Bc5 25. Bf2 Rhd8 26. Nb3 Bxf2+ 27. Kxf2 Rac8 28. Rxd8 Rxd8 29. Nc5+ Kb6 30. Na4+ Kb5 31. b3 Rd2+ 32. Re2 Rxe2+ 33. Kxe2 a5 34. c4+ Kc6 35. Kd3 Nh5 36. Ke4 f6 37. g4 f5+ 38. gxf5 exf5+ 39. Kxf5 Kd6 40. Kg6 Nf4+ 41. Kxg7 Nd3 42. Kxh6 Nc1 43. Kg6 Ke7 44. Kg7 Ke6 45. h4 Kf5 46. h5 Kg5 47. h6 Nxa2 48. h7 Nc1 49. h8Q Nxb3 50. Qh6+ Kf5 51. Qe3 Na1 52. Qc1 Nb3 53. Qb2 Na1 54. Qxa1 Kf4 55. Kg6 Kxf3 56. Kg5 Ke3 57. Qe1+ Kd4 58. Qd2+ Kxc4 59. Nb2+ Kb3 60. Qd5+ Kxb2 61. Qxa5 b3 62. Qd2+ Ka3 63. Qc1+ Ka2 64. Kf4 b2 65. Qc2 Ka1 66. Qa4+ Kb1 67. Ke3 Kc1 68. Qc4+ Kb1 69. Qd3+ Ka1 70. Qa3+ Kb1 71. Kd3 Kc1 72. Qc3+ Kb1 73. Kd2 Ka2 74. Qa5+ Kb3 75. Qb5+ Ka2 76. Qa4+ Kb1 77. Kc3 Kc1 78. Qc2# 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "6"]
[White "Roelofs, Rik"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "D02"]
[PlyCount "37"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nc6 3. Nf3 Bf5 4. a3 Nf6 5. Bg5 h6 6. Bxf6 exf6 7. e3 Bd6 8. Bb5 a6 9. Bd3 Bd7 10. Nxd5 0-0 11. c4 Re8 12. Qc2 Bg4 13. Nd2 Nxd4 14. Qc3 Be5 15. Qb4 b6 16. f3 a5 17. Qa4 Bd7 18. Qd1 Bd6 19. 0-0 1/2-1/2

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "8"]
[White "Van Trijp, Robin"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[ECO "C64"]
[PlyCount "36"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Nxe5 Nxe5 5. d4 c6 6. Ba4 b5 7. Bb3 a5 8. a3 a4 9. Ba2 Bxd4 10. Qxd4 Qf6 11. Qc5 Ne7 12. Nc3 0-0 13. 0-0 N7g6 14. Be3 Nh4 15. Ne2 d6 16. Qb4 g5 17. f4 gxf4 18. Rxf4 Qe7 1/2-1/2

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "1"]
[White "Deskaj, Arbias"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "96"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. g3 Nf6 2. b3 e5 3. Bb2 Nc6 4. Bg2 d5 5. e3 Bf5 6. d3 Bc5 7. Nd2 Qd6 8. Ne2 0-0-0 9. 0-0 Rhe8 10. f4 exf4 11. d4 Bb6 12. Rxf4 Bg6 13. Bh3+ Kb8 14. c4 Qe7 15. Nf1 a6 16. Qc1 Qf8 17. Ba3 Qg8 18. b4 Bd3 19. c5 Ba7 20. Qd2 Bxe2 21. Qxe2 g5 22. Rxf6 Nxd4 23. Qd2 Ne6 24. Qd3 Qg7 25. Bb2 d4 26. Rf3 g4 27. Qe4 gxf3 28. Qxf3 Ng5 29. Qg4 Nxh3+ 30. Qxh3 Qg6 31. Rd1 dxe3 32. Re1 Qc2 33. Nxe3 Qxb2 34. Kf1 Qd4 35. Kf2 Qd2+ 36. Re2 Qd3 37. Qf1 b6 38. Rb2 Qxe3+ 39. Kg2 Rd2+ 40. Rxd2 Qxd2+ 41. Kh3 Qd7+ 42. Kg2 Qc6+ 43. Qf3 Re2+ 44. Kh3 Qxf3 45. Kh4 Re4+ 46. Kg5 Qg4+ 47. Kf6 Re6+ 48. Kxf7 Qg6+ 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "3"]
[White "Gieben, Stijn"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "137"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bg5 h6 7. Nxc6 bxc6 8. Bd2 Qe7 9. f3 d5 10. Bd3 dxe4 11. fxe4 Bf5 12. 0-0 Qc5+ 13. Kh1 Bh7 14. a3 Bxc3 15. Bxc3 Qg5 16. Qf3 0-0-0 17. Bxf6 gxf6 18. Qxf6 Rhg8 19. Qxg5 Rxg5 20. Rxf7 Bg6 21. Rf6 Rg8 22. Rg1 Kb7 23. h4 Rg4 24. g3 Bxe4+ 25. Bxe4 Rxe4 26. Rg2 Re1+ 27. Kh2 Rb1 28. b3 Rh8 29. Rff2 Re8 30. Rg1 Rxg1 31. Kxg1 Re1+ 32. Kh2 Rc1 33. Kh3 h5 34. Kg2 Kb6 35. Kf3 Ka5 36. Rg2 Ra1 37. Re2 Rd1 38. Re5+ Rd5 39. Rxd5+ cxd5 40. Ke3 c5 41. c3 Kb5 42. b4 cxb4 43. axb4 Kc4 44. Kd2 a6 45. Kc2 d4 46. cxd4 Kxd4 47. g4 hxg4 48. Kd2 Ke4 49. h5 Kf5 50. h6 Kg6 51. Ke3 Kxh6 52. Kf4 Kh5 53. Ke3 Kh4 54. Kf2 Kh3 55. Kg1 Kg3 56. Kf1 Kh2 57. Ke2 g3 58. Kd3 g2 59. Ke4 g1Q 60. Kd5 Qb6 61. Kc4 a5 62. bxa5 Qxa5 63. Kd4 Kg3 64. Ke4 Qg5 65. Kd4 Kf3 66. Kc4 Ke3 67. Kb4 Kd3 68. Ka4 Kc3 69. Ka3 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Mostertman, Olav"]
[Result "1-0"]
[ECO "B70"]
[PlyCount "71"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Bc4 0-0 8. 0-0 Bd7 9. Qd2 Nc6 10. Nb3 Rc8 11. f4 a6 12. a4 Nh5 13. Rad1 Nb4 14. Be2 Nf6 15. e5 Ne8 16. exd6 Nxd6 17. Qxd6 f6 18. Qxb4 fxg5 19. Qxb7 Rc7 20. Qd5+ Kh8 21. Qxg5 Qa8 22. Bf3 Qe8 23. Qa5 Rc8 24. Bb7 Rc4 25. Qd5 Rc7 26. Nc5 Bf5 27. Rd2 h6 28. Bxa6 Rc6 29. Bb5 Rxc5 30. Qxc5 Qf7 31. Re1 Bf6 32. Nd5 Rc8 33. Qa7 Kh7 34. Nxe7 h5 35. Nc6 Qxa7+ 36. Nxa7 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "5"]
[White "Polak, Alexander"]
[Black "Vereggen, Lars"]
[Result "0-1"]
[ECO "B54"]
[PlyCount "54"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. N5a3 Be7 7. Nc3 b5 8. Nd5 Bb7 9. Be3 Bxd5 10. Qxd5 Nd7 11. Be2 Ngf6 12. Qc6 0-0 13. Bd3 Qb8 14. Qc3 b4 15. Qb3 bxa3 16. Qxa3 a5 17. 0-0 Qb4 18. Qxb4 axb4 19. Bd2 Rab8 20. f4 Rfc8 21. c3 Nc5 22. fxe5 dxe5 23. Bc4 Ncxe4 24. Be3 Rxc4 25. cxb4 Rcxb4 26. b3 Nd5 27. Bf2 Ndc3 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "2"]
[White "Polak, Alexander"]
[Black "Verseef, Yvar"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "48"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 d6 6. Bg5 Be6 7. Bb3 Qd7 8. Qd2 0-0-0 9. 0-0-0 Bxb3 10. axb3 h6 11. Bh4 g5 12. Nxg5 hxg5 13. Bxg5 Qe6 14. Nd5 Nxd5 15. Bxd8 Rxd8 16. exd5 Qxd5 17. Qg5 Bxf2 18. Qf5+ Kb8 19. Qxf2 Nb4 20. Qd2 Qa5 21. Qg5 c5 22. Kd2 Nc6+ 23. Kc1 Qa1+ 24. Kd2 Qxb2 1/2-1/2

[Event "Hessen-ch U15"]
[Site "Hessen"]
[Date "1994.??.??"]
[Round "2"]
[White "Malek, Daniel"]
[Black "Polak, Alexander"]
[Result "1-0"]
[ECO "A07"]
[PlyCount "57"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nc6 3. Bg2 Nf6 4. 0-0 e5 5. d3 Be6 6. Nbd2 Bd6 7. e4 dxe4 8. dxe4 0-0 9. Qe2 Qd7 10. Nc4 Bxc4 11. Qxc4 Qg4 12. Re1 Rad8 13. h3 Qd7 14. Bg5 Qe7 15. Nh4 Na5 16. Qb5 b6 17. Nf5 Qe6 18. h4 h6 19. Bh3 Kh8 20. Nxg7 Qxh3 21. Bxf6 Rc8 22. Ne6+ Kg8 23. Nxf8 Kxf8 24. Bxe5 Bxe5 25. Qxe5 Qg4 26. Qh8+ Qg8 27. Qxh6+ Qg7 28. Qxg7+ Kxg7 29. Rad1 1-0

[Event "Hessen-ch U15"]
[Site "Hessen"]
[Date "1994.??.??"]
[Round "3"]
[White "Polak, Alexander"]
[Black "Feenstra, Oliver"]
[Result "1-0"]
[ECO "C53"]
[PlyCount "71"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Be6 9. d5 Bxd5 10. Bxd5 Nge7 11. Bxc6+ Nxc6 12. 0-0 Qf6 13. Qb3 Rb8 14. Qc3 Qg6 15. e5 Rd8 16. exd6 Rxd6 17. Rfe1+ Kf8 18. Ne5 Qg5 19. Ndf3 Qh5 20. Nxc6 Rxc6 21. Qe3 Re6 22. Qxa7 Rxe1+ 23. Rxe1 g5 24. Qc5+ Kg7 25. Qe5+ f6 26. Qxc7+ Kg6 27. Qxb7 g4 28. Qe4+ Kh6 29. Qf4+ Kg6 30. Nd4 Qa5 31. Qxg4+ Kf7 32. Qe6+ Kg6 33. Ra1 Rd8 34. Nc6 Qd5 35. Qxd5 Rxd5 36. Ne7+ 1-0

[Event "Hessen-ch U15"]
[Site "Hessen"]
[Date "1994.??.??"]
[Round "1"]
[White "Polak, Alexander"]
[Black "Schmidt, Claudius"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "103"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d5 6. exd5 Nxd5 7. Bg5 Be7 8. Bxe7 Ncxe7 9. Nxe5 Be6 10. Bxd5 Qxd5 11. Qa4+ c6 12. Qe4 Rd8 13. Qxd5 Bxd5 14. d4 0-0 15. 0-0 Nf5 16. Nd2 Nh4 17. g3 Nf5 18. Rfe1 Nd6 19. Nef3 a6 20. Rac1 Bxa2 21. b3 Nb5 22. Rc2 g6 23. Re3 Bxb3 24. Nxb3 Na3 25. Rce2 Nb5 26. Ng5 Nd6 27. Nc5 Ra8 28. Nd7 Rfd8 29. Nf6+ Kg7 30. Nfe4 Nf5 31. Rf3 Re8 32. Nxh7 Re7 33. g4 Kxh7 34. gxf5 Rae8 35. Nf6+ Kh6 36. Rxe7 Rxe7 37. Ng8+ Kg5 38. Nxe7 a5 39. fxg6 fxg6 40. c4 Kg4 41. Rf8 a4 42. d5 cxd5 43. cxd5 a3 44. d6 a2 45. Ra8 b5 46. d7 b4 47. Rxa2 Kg5 48. d8Q Kf6 49. Nxg6+ Kxg6 50. Qf8 b3 51. Ra7 b2 52. Rg7+ 1-0

