[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Darcy Costa, Jose Luis"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2238"]
[BlackElo "2076"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. a4 Bg4 9. c3 0-0 10. h3 Bxf3 11. Qxf3 Na5 12. Bc2 c5 13. d3 b4 14. Nd2 Rb8 15. Nf1 Qd7 16. Ne3 g6 17. cxb4 cxb4 18. Bd1 Rfc8 19. Qg3 Kh8 20. Rb1 b3 21. Bd2 Qxa4 22. Bg4 Nxg4 23. Qxg4 Bd8 24. Ra1 Qb5 25. Qf3 Kg8 26. Ng4 Kf8 27. Bh6+ Kg8 28. h4 Nb7 29. d4 Qe8 30. Nf6+ 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Geryk, Miroslav"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2156"]
[BlackElo "2076"]
[PlyCount "129"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 cxd4 12. cxd4 Bd7 13. Nf1 Rc8 14. Ne3 0-0 15. b3 Rfe8 16. d5 Qb6 17. Bd2 Rc7 18. Qe2 Rec8 19. Rec1 Bd8 20. Qe1 Nb7 21. b4 a5 22. a3 Qa6 23. Bd3 Rxc1 24. Rxc1 Rxc1 25. Qxc1 axb4 26. axb4 Bb6 27. Nd1 Qa4 28. Ne1 Ne8 29. Nc2 Nc7 30. Qa3 Bd4 31. Nc3 Qxa3 32. Nxa3 Bxc3 33. Bxc3 f5 34. exf5 Nxd5 35. Bxb5 Bxf5 36. Bd2 Nc7 37. Be2 Kf7 38. f4 exf4 39. Bf3 Nd8 40. b5 Nde6 41. b6 Na6 42. Nb5 Ke7 43. Na7 g6 44. Bd5 Nd4 45. h4 Be6 46. Ba8 h6 47. Nc6+ Nxc6 48. Bxc6 g5 49. h5 Nb8 50. Bf3 Nd7 51. b7 Nb8 52. Bc3 g4 53. Be4 Bf7 54. Bd4 Kd7 55. Bg6 Bg8 56. Bg7 f3 57. Bf5+ Kc7 58. g3 Nc6 59. Bxg4 Kxb7 60. Bxh6 Kc7 61. Bg7 Bh7 62. Bxf3 Kd7 63. g4 Nd8 64. g5 Ke7 65. Bf6+ 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Ilyasov, Anatoly Fedorovich"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C99"]
[WhiteElo "2376"]
[BlackElo "2076"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 a5 15. Be3 a4 16. Nbd2 Bb7 17. Bd3 Rfc8 18. Bxb5 Qa5 19. Bf1 Ba6 20. Rc1 Bxf1 21. Rxf1 Qa6 22. b3 axb3 23. axb3 Qb7 24. d5 Nb4 25. Rxc8+ Rxc8 26. Qe2 Rc2 27. Ra1 Nxe4 28. Ra7 Qb8 29. Rxe7 Rc3 30. Nxe4 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Krebs, Juergen"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C99"]
[WhiteElo "2282"]
[BlackElo "2076"]
[PlyCount "95"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 d6 9. c3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 a5 15. Be3 a4 16. Nbd2 Bd7 17. Rc1 Qb7 18. Nf1 Rfe8 19. Ng3 Bd8 20. Qe2 h6 21. Red1 Bb6 22. dxe5 Nxe5 23. Bb1 Bxe3 24. Qxe3 Rac8 25. Nh4 Rxc1 26. Rxc1 Rc8 27. Rd1 Ne8 28. Nhf5 Be6 29. Kh2 Nc4 30. Qe2 Kf8 31. Nd4 Bd7 32. b3 Na3 33. Bd3 Qb6 34. Qe3 Qc5 35. f4 Nf6 36. e5 Nd5 37. Qf3 Nc3 38. e6 Bxe6 39. Nxe6+ fxe6 40. Re1 axb3 41. axb3 Nd5 42. Rxe6 Nc7 43. Rg6 Ne8 44. Nf5 Rc7 45. Re6 Nf6 46. Nxg7 Kxg7 47. Qg3+ Kf7 48. f5 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Muljadi, Paul"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2238"]
[BlackElo "2076"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. 0-0 Ba7 7. Bb3 d6 8. Nbd2 0-0 9. h3 h6 10. Re1 Nh5 11. Nf1 Qf6 12. Ne3 Nf4 13. Ng4 Qg6 14. Bxf4 exf4 15. d4 Bxg4 16. hxg4 Qxg4 17. Qd3 Rae8 18. Rad1 Bb6 19. Bc2 g6 20. Ba4 Kg7 21. e5 h5 22. b4 d5 23. e6 Rxe6 24. Bxc6 bxc6 25. Rxe6 Qxe6 26. Qxa6 h4 27. Re1 Qg4 28. Ne5 Qg5 29. Qd3 Ra8 30. Qh3 Qe7 31. Nf3 Qf6 32. Qd7 Qd6 33. Qg4 Qf6 34. Ng5 Qf5 35. Qxf5 gxf5 36. Re2 Ra3 37. Rc2 Kg6 38. Nf3 f6 39. Nxh4+ Kg5 40. Nf3+ Kh6 41. Kf1 Kg6 42. Ke2 Kh5 43. Kd1 Kg6 44. Kc1 Kf7 45. Ne1 Ra8 46. Re2 f3 47. Nxf3 Rg8 48. Ne1 Ba7 49. a4 Rg4 50. Kd2 Rg5 51. a5 Rg4 52. Ke3 Re4+ 53. Kd2 Rg4 54. Re3 Rf4 55. Rh3 Rxf2+ 56. Ke3 Rf1 57. Ke2 Rf4 58. Rh7+ Ke6 59. Rxc7 Re4+ 60. Kf2 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Puzone, Mario"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2404"]
[BlackElo "2076"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nf6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 0-0 8. 0-0 dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. a3 Rc8 12. Ng5 c5 13. Bxh7+ Kh8 14. f4 cxd4 15. exd4 g6 16. Bxg6 fxg6 17. Qxg6 Qe8 18. Qh6+ Kg8 19. Qh3 Bd5 20. Nxd5 exd5 21. Be3 Nb6 22. Rae1 Nc4 23. b3 Qd7 24. Ne6 Nxa3 25. Rf3 Kf7 26. Bd2 Nc2 27. Ng5+ Kg8 28. Re6 Nxd4 29. Rg3 Ne2+ 30. Rxe2 Qxh3 31. Nxh3+ Kh8 32. Bc3 Bc5+ 33. Kf1 Bb6 34. Be5 Rc6 35. Rg6 Kh7 36. f5 Rc1+ 37. Re1 Rxe1+ 38. Kxe1 Ne4 39. Ng5+ Nxg5 40. Rxg5 Re8 41. Rh5+ Kg8 42. Rh8+ Kf7 43. Rxe8 Kxe8 44. h4 a5 45. g4 a4 46. bxa4 bxa4 47. g5 a3 48. Ba1 Be3 49. g6 1-0

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Cadenas Gonzalez, Jose Maria"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2076"]
[BlackElo "2241"]
[PlyCount "118"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Be2 Qb6 10. 0-0 cxd4 11. Nxd4 Bc5 12. Rad1 Bb7 13. a3 Rc8 14. Bf2 Nxd4 15. Bxd4 Bxd4+ 16. Qxd4 Ke7 17. h4 Rc7 18. Rf3 g6 19. Rh3 h5 20. Kf2 Rb8 21. Qe3 Qxe3+ 22. Rxe3 Ba8 23. Rd4 Nb6 24. Red3 Bc6 25. Nd1 a5 26. b3 Nd7 27. Ne3 Nc5 28. Rd1 a4 29. b4 Ne4+ 30. Ke1 Nc3 31. Ra1 f5 32. Bd3 Ne4 33. Nf1 Bd7 34. Kd1 Rc3 35. Kc1 Rbc8 36. Kb2 Nf2 37. Rc1 Nxd3+ 38. Rxd3 R3c4 39. g3 Re4 40. Nd2 Re2 41. Nf3 Rc4 42. Nd4 Rg2 43. Re1 Kf7 44. Re2 Rg1 45. Rh2 Rxd4 46. Rxd4 Rxg3 47. Rh1 Rf3 48. Rh2 Bc6 49. Rh1 Ke7 50. Rg1 Be8 51. Rh1 Bd7 52. Rh2 Kf8 53. Rh1 Ke8 54. Rh2 Kf7 55. Rh1 Bc6 56. Rh2 Bd7 57. Rh1 Ke7 58. Rh2 Kf7 59. Rh1 Ke7 1/2-1/2

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "De Homont, Rene"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2076"]
[BlackElo "2357"]
[PlyCount "108"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. Ne2 Bg4 7. f3 Bd7 8. Na3 a6 9. 0-0 e5 10. Re1 Bd6 11. c4 Nf6 12. cxd5 Nxd5 13. Nc4 0-0 14. Be4 Be6 15. Nxd6 Qxd6 16. dxe5 Qc5+ 17. Kh1 Rfd8 18. Bg5 Nf6 19. Qa4 Nxe4 20. Qxe4 Rd5 21. Bf4 Qb4 22. Qxb4 Nxb4 23. Nc3 Rd7 24. Red1 Nd3 25. Bg3 Nxb2 26. Rxd7 Bxd7 27. Ne4 b5 28. Rc1 Be6 29. Kg1 a5 30. a3 Nc4 31. Ra1 Ne3 32. Rb1 Rb8 33. Be1 Nc4 34. Ra1 h6 35. Nd6 b4 36. Nxc4 Bxc4 37. Rb1 b3 38. Bxa5 Bd3 39. Rb2 Bc2 40. Kf2 g5 41. Ke3 Rb5 42. Bc3 Rd5 43. Ke2 Kf8 44. g3 Ke7 45. a4 Kd7 46. f4 gxf4 47. gxf4 Kc6 48. a5 Kb5 49. h3 Rd7 50. h4 h5 51. Bd2 Rd5 52. Bc3 Kc4 53. Be1 Rd4 54. a6 Rd7 0-1

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Khokhlov, Andrey Petrovich"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2076"]
[BlackElo "2186"]
[PlyCount "40"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bd3 Be6 12. 0-0 Bxd5 13. exd5 Ne7 14. Nxb5 Bg7 15. Nc3 e4 16. Bc4 0-0 17. Qd2 Ng6 18. Rab1 Qh4 19. Be2 Qf4 20. a3 Qxd2 0-1

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Khokhlov, Igor"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2076"]
[BlackElo "2353"]
[PlyCount "58"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be2 Qc7 7. 0-0 b5 8. Nxc6 dxc6 9. Qd2 Nf6 10. Rd1 e5 11. Qg5 h5 12. Qh4 Be6 13. Bg5 Nd7 14. h3 Bc5 15. Qg3 Qa7 16. a4 b4 17. Na2 a5 18. Nc1 h4 19. Qf3 f6 20. Bd2 Bf7 21. Qf5 Nf8 22. Nd3 Bb6 23. Qg4 Ne6 24. c3 b3 25. Qf5 0-0-0 26. Nc1 Kb8 27. Nxb3 Nf8 28. Nc1 Bg6 29. Qf3 Ne6 0-1

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Pajak, Jakub Lech"]
[Result "1/2-1/2"]
[ECO "B78"]
[WhiteElo "2076"]
[BlackElo "2213"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Rc8 11. 0-0-0 Nxd4 12. Bxd4 b5 13. h4 a5 14. h5 a4 15. Bxf6 exf6 16. Bd5 b4 17. Ne2 f5 18. hxg6 hxg6 19. Qxb4 Rc5 20. Nd4 Qc7 21. Rd3 Rc8 22. c3 Rb8 23. Qa3 Be5 24. Kc2 Kg7 25. Rd2 Qa5 26. Rdd1 fxe4 27. fxe4 Rxd5 28. exd5 Qxd5 29. Kb1 Qxg2 30. Ka1 f6 31. Rhg1 Qb7 32. Rdf1 g5 33. Rf2 Qb6 34. Rd2 Rh8 35. Qb4 Qxb4 36. cxb4 Kf7 37. b5 a3 38. Kb1 Rh4 39. Rgd1 Bg4 40. Nc2 Bxd1 41. Rxd1 Bxb2 42. b6 1/2-1/2

[Event "Webchess op6 sf07 email"]
[Site "ICCF email"]
[Date "2017.02.08"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Ronat, Olivier"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2076"]
[BlackElo "2374"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Nf3 Qc7 8. 0-0 Bb7 9. Re1 Be7 10. e5 f5 11. Bf4 Nh6 12. a4 b4 13. Nb1 Nf7 14. h4 0-0 15. Nbd2 Nc6 16. Qe2 Bc5 17. Nb3 Ba7 18. h5 Ne7 19. Rad1 g5 20. Bh2 Kh8 21. Rd2 g4 22. Nfd4 Rg8 23. Bg3 Ng5 24. Bxa6 Nf3+ 25. gxf3 gxf3 26. Qd1 f4 27. Bxb7 Qxb7 28. Kh2 fxg3+ 29. fxg3 Raf8 30. Rf1 Nf5 31. Rxf3 Nxd4 32. Rxf8 Rxf8 33. Nxd4 Bxd4 34. Qh1 Qa7 0-1

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Bes, Rob NM"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "1868"]
[BlackElo "2068"]
[PlyCount "79"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[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 Nbd7 9. Qd2 b5 10. g4 Nb6 11. g5 Nfd7 12. 0-0-0 Nc4 13. Qf2 Be7 14. h4 Nxe3 15. Qxe3 h6 16. gxh6 Rxh6 17. Kb1 Qb6 18. Qd2 Nf6 19. Bh3 Bc4 20. Nc1 a5 21. b3 a4 22. Bf1 Bxf1 23. Rdxf1 Rc8 24. N1e2 Kf8 25. Rd1 a3 26. Qd3 b4 27. Na4 Qf2 28. Rdf1 Qa7 29. Ng3 Nh5 30. Nf5 Rf6 31. Rhg1 Nf4 32. Qd2 d5 33. h5 dxe4 34. fxe4 Rd8 35. Qh2 Qc7 36. h6 gxh6 37. Nxh6 Rg6 38. Rxg6 fxg6 39. Ng4 Kg8 40. Rh1 1/2-1/2

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Faber, Krine A"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "2106"]
[BlackElo "2068"]
[PlyCount "51"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nf6 5. Bg5 h6 6. Bh4 dxc4 7. e4 g5 8. Bg3 b5 9. Be2 Bb7 10. 0-0 Nbd7 11. Ne5 h5 12. Nxd7 Qxd7 13. Be5 Rh6 14. Qc1 Rg6 15. Rd1 Qe7 16. a4 a6 17. Bxf6 Qxf6 18. e5 Qf4 19. Qxf4 gxf4 20. Bxh5 Rh6 21. Ne4 Be7 22. Bf3 0-0-0 23. Nc5 Rhh8 24. Rac1 Kc7 25. axb5 axb5 26. Nxb7 1/2-1/2

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Nieuweboer, Mark"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2058"]
[BlackElo "2068"]
[PlyCount "51"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qa5+ 10. Bd2 Qb6 11. c4 Ne3 12. Qc1 Nxf1 13. Rxf1 Qd4 14. Qc2 Rb8 15. Bc3 Qxc4 16. b3 Qa6 17. Bd4 Rb5 18. Kf2 Rd5 19. Rfd1 Be7 20. Kg1 0-0 21. Qf2 f6 22. exf6 gxf6 23. Qh4 Rf5 24. Ng3 Rd5 25. Ne4 Rf5 26. Ng3 1/2-1/2

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Van Dam, Joost"]
[Black "Wiersma, Jacob"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "1739"]
[BlackElo "2068"]
[PlyCount "72"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Be4 11. Qc1 Nc6 12. Be3 Rc8 13. Nbd2 Bd5 14. Nb3 a5 15. Rd1 Nb4 16. Nc5 Nxa2 17. Qb1 c6 18. Rd2 Nb4 19. Bg5 Bxf3 20. Bxf3 h6 21. Bf4 Nfd5 22. Qc1 Nxf4 23. gxf4 a4 24. e3 Bd6 25. Ne4 Qc7 26. Be2 Be7 27. Ra3 Rfd8 28. b3 Na6 29. bxa4 Bxa3 30. Qxa3 Qa5 31. Rd1 c5 32. Bxb5 cxd4 33. Qe7 Qb6 34. Kg2 Nc7 35. exd4 Nxb5 36. axb5 Qxb5 0-1

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "De Heer, Henk JJ"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2068"]
[BlackElo "2147"]
[PlyCount "59"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. f3 d5 10. exd5 Nb4 11. Nde2 a4 12. Nxa4 Nfxd5 13. Bf2 Bf5 14. a3 Nxc2+ 15. Bxc2 Qa5+ 16. b4 Nxb4 17. axb4 Qxb4+ 18. Qd2 Qxd2+ 19. Kxd2 Bxa1 20. Rxa1 Rfd8+ 21. Kc1 Bxc2 22. Kxc2 b5 23. Nec3 bxa4 24. Rxa4 Rxa4 25. Nxa4 e5 26. Nc3 f5 27. Bg3 Re8 28. Nb5 Kg7 29. Kb3 e4 30. fxe4 1-0

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Eshuis, Hans"]
[Result "0-1"]
[ECO "C18"]
[WhiteElo "2068"]
[BlackElo "2184"]
[PlyCount "48"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 dxc3 12. Qd3 d4 13. Nxc3 dxc3 14. Qxc3 b6 15. g3 Bb7 16. Bg2 0-0-0 17. Bd2 Kb8 18. 0-0-0 Rh8 19. Be4 Nd5 20. Qc4 Qe7 21. Kb2 Na5 22. Bxa5 bxa5 23. Qb5 Ka8 24. Qb3 f5 0-1

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Falandt, Jan"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2068"]
[PlyCount "110"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. 0-0 h6 7. Be3 c6 8. a4 Qc7 9. h3 0-0 10. a5 Re8 11. dxe5 dxe5 12. Nh4 Nf8 13. Qf3 Ne6 14. Rfd1 Nd4 15. Bxd4 exd4 16. Rxd4 Bd6 17. Rd2 Bh2+ 18. Kh1 Be5 19. Re2 Be6 20. Bxe6 Rxe6 21. Nf5 Rd8 22. g4 Ree8 23. Kg2 Nh7 24. Qe3 Nf8 25. Rd2 Ne6 26. Rxd8 Rxd8 27. Ne2 c5 28. Nc3 Bf4 29. Qe2 g6 30. Nd5 Qe5 31. Nfe3 Qxe4+ 32. Qf3 Qe5 33. Rd1 Bxe3 34. Ne7+ Kg7 35. Rxd8 Nxd8 36. Qxe3 Qxe3 37. fxe3 Kf6 38. Ng8+ Ke6 39. a6 bxa6 40. Nxh6 Nc6 41. Kf3 a5 42. Ke2 a4 43. e4 Ne5 44. Kd2 Kf6 45. h4 Nf3+ 46. Ke3 c4 47. c3 Nxh4 48. g5+ Ke6 49. Ng4 Ng2+ 50. Kd4 Ne1 51. Kxc4 Nf3 52. Kd3 Nxg5 53. Ne3 Nf3 54. c4 g5 55. Nf5 g4 0-1

[Event "NED AOW-12 email"]
[Site "ICCF email"]
[Date "2016.02.15"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Hospers, Bert"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2068"]
[BlackElo "1967"]
[PlyCount "84"]
[EventDate "2016.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. a3 Qb6 10. Be2 Rb8 11. 0-0 cxd4 12. Nxd4 Bc5 13. Rad1 0-0 14. Rf3 Nxd4 15. Bxd4 Bb7 16. Qe3 Bxd4 17. Qxd4 Rfc8 18. Rg3 Rc7 19. Qf2 Qxf2+ 20. Kxf2 Nb6 21. Rd4 Bc8 22. Ke1 g6 23. Kd2 Bd7 24. Nd1 Na4 25. b3 Nc5 26. Nf2 Rbc8 27. Rc3 Kg7 28. Bf3 h5 29. Nd1 a5 30. Ke1 f6 31. exf6+ Kxf6 32. Ne3 Ra7 33. Kd2 Rac7 34. Kd1 Rc6 35. g3 a4 36. b4 Nb7 37. Rxc6 Bxc6 38. Kd2 Nd6 39. h4 Ke7 40. Ke2 Kf6 41. Rd1 Ke7 42. Rd4 Kf6 1/2-1/2

[Event "FRA-NED email"]
[Site "ICCF email"]
[Date "2015.03.16"]
[Round "?.23"]
[White "Camps, Jean Pierre"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2074"]
[BlackElo "2082"]
[PlyCount "107"]
[EventDate "2015.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "France"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. c4 Nb4 9. Be2 0-0 10. Nc3 Bf5 11. a3 Nxc3 12. bxc3 Nc6 13. Re1 Re8 14. cxd5 Qxd5 15. Bf4 Bd6 16. c4 Qe4 17. Be3 Rad8 18. c5 Be7 19. Qb3 Bf6 20. Rad1 b6 21. d5 Na5 22. Qb5 Qc2 23. d6 c6 24. Qa6 Rxe3 25. fxe3 Qxc5 26. Qxa7 Bc2 27. Rc1 Nb3 28. Rxc2 Qxc2 29. Bd1 Qc3 30. Bxb3 Qxb3 31. e4 Rf8 32. e5 Bd8 33. h3 Qc4 34. a4 h6 35. Kh1 Qc2 36. Qd7 Qc4 37. Rb1 h5 38. Re1 g6 39. Rd1 c5 40. Re1 Qe6 41. Qc6 Qe8 42. Qxe8 Rxe8 43. g4 hxg4 44. hxg4 g5 45. Kg2 Re6 46. Rb1 Kg7 47. a5 bxa5 48. Rb8 Re8 49. d7 Rh8 50. Nd2 a4 51. Nc4 a3 52. Nxa3 Ba5 53. Re8 Rh4 54. Kg3 1-0

[Event "FRA-NED email"]
[Site "ICCF email"]
[Date "2015.03.16"]
[Round "?.23"]
[White "Wiersma, Jacob"]
[Black "Camps, Jean Pierre"]
[Result "1/2-1/2"]
[ECO "C17"]
[WhiteElo "2082"]
[BlackElo "2074"]
[PlyCount "60"]
[EventDate "2015.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "France"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "FRA"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 cxd4 6. Nb5 Bc5 7. Qg4 Kf8 8. b4 Bb6 9. Nxd4 h5 10. Qf4 g5 11. Qe3 Nh6 12. c3 Nc6 13. Ngf3 Nf5 14. Qxg5 Qxg5 15. Bxg5 Nfxd4 16. cxd4 Nxd4 17. Rc1 Nxf3+ 18. gxf3 Bd7 19. Rg1 Rg8 20. f4 a6 21. Rg3 Rh8 22. Bf6 Rg8 23. Rh3 Bd8 24. Rxh5 Be7 25. Bd3 Bxb4+ 26. Ke2 Rc8 27. Rxc8+ Bxc8 28. Rg5 Bd7 29. a4 Bxa4 30. h4 Bb5 1/2-1/2

[Event "NED-ch WS15-F email"]
[Site "ICCF email"]
[Date "2015.03.02"]
[Round "?"]
[White "Oomen, Ali MJG"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2105"]
[BlackElo "2082"]
[PlyCount "85"]
[EventDate "2015.??.??"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Ke8 10. Nc3 h5 11. Bf4 Be7 12. Rad1 Be6 13. Ng5 Rh6 14. g3 Bxg5 15. Bxg5 Rg6 16. h4 f6 17. exf6 gxf6 18. Bf4 Rc8 19. Kh2 Kf7 20. b3 Ne7 21. Ne2 Rgg8 22. c4 Ng6 23. f3 b5 24. cxb5 cxb5 25. Rfe1 b4 26. Nd4 Bd5 27. Nf5 Rgd8 28. Kg2 Nxf4+ 29. gxf4 Rd7 30. Kf2 c5 31. Ne3 Bc6 32. Rxd7+ Bxd7 33. Rd1 Rc7 34. Rd5 Be6 35. Rd6 Rd7 36. Ra6 f5 37. Ke2 Rc7 38. Ra5 Kg6 39. Ra6 Kf7 40. Ra5 Kf6 41. Ra6 Ke7 42. Ra5 Kf6 43. Ra6 1/2-1/2

[Event "NED-ch WS15-F email"]
[Site "ICCF email"]
[Date "2015.03.02"]
[Round "?"]
[White "Van der Plas, Rob"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "D47"]
[WhiteElo "2261"]
[BlackElo "2082"]
[PlyCount "87"]
[EventDate "2015.??.??"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Nf6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. e4 b4 10. Na4 c5 11. e5 Nd5 12. 0-0 cxd4 13. Re1 g6 14. Bg5 Qa5 15. Nxd4 a6 16. Bd2 Bg7 17. a3 Nxe5 18. Be4 0-0 19. axb4 Qd8 20. Nc5 Qb6 21. Ndb3 Rfd8 22. Nxb7 Qxb7 23. Nc5 Qb5 24. Qe2 Nc6 25. Qf1 Bxb2 26. Rxa6 Qxf1+ 27. Kxf1 Rxa6 28. Nxa6 Na7 29. Rb1 Be5 30. Bd3 Bc3 31. Bh6 Bf6 32. Rc1 Nc3 33. Bc4 Nc8 34. g3 Nb6 35. Bb3 Ra8 36. Nc5 Nbd5 37. Bd2 Bd4 38. Bc4 Ra3 39. Nb3 Bf6 40. b5 Nb6 41. Bxc3 Bxc3 42. Rxc3 Nxc4 43. Rxc4 Rxb3 44. Rc5 1/2-1/2

[Event "NED-ch WS15-F email"]
[Site "ICCF email"]
[Date "2015.03.02"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "De Haas, Richard"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2082"]
[PlyCount "88"]
[EventDate "2015.??.??"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 a5 15. Bc4 Rb8 16. b3 Kh8 17. 0-0 f5 18. exf5 Bxf5 19. Ra2 Bg6 20. Qe2 Qd7 21. Nce3 Bd8 22. h3 Ne7 23. Nxe7 Qxe7 24. Qd2 Bh5 25. Nd5 Qd7 26. f4 Bf7 27. fxe5 dxe5 28. Qe3 Re8 29. Qe4 Bxd5 30. Bxd5 Bb6+ 31. Kh2 Rf8 32. Rxf8+ Rxf8 33. g3 Qe7 34. h4 Qc5 35. Bc4 g6 36. Kh3 Qc8+ 37. Kh2 Qf5 38. Qxf5 gxf5 39. Rd2 f4 40. Rd5 fxg3+ 41. Kxg3 Bf2+ 42. Kh3 Be1 43. Rxe5 Bxc3 44. Rg5 Bd2 1/2-1/2

[Event "NED-ch WS15-F email"]
[Site "ICCF email"]
[Date "2015.03.02"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Mulder, Catharinus"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2082"]
[BlackElo "1993"]
[PlyCount "35"]
[EventDate "2015.??.??"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 dxc3 12. Qd3 d4 13. Nxd4 Nxd4 14. Qxd4 Bd7 15. Rg1 Nf5 16. Qf2 Qc6 17. Bd3 Qd5 18. a4 1-0

[Event "AUT-NED email"]
[Site "ICCF email"]
[Date "2015.01.11"]
[Round "?.25"]
[White "Hechl, Gerald"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2184"]
[BlackElo "2082"]
[PlyCount "96"]
[EventDate "2015.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Austria"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "AUT"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Ke8 10. Nc3 h5 11. Bf4 Be7 12. Rad1 Be6 13. Ng5 Rh6 14. g3 Bxg5 15. Bxg5 Rg6 16. h4 f6 17. exf6 gxf6 18. Bf4 Nxh4 19. f3 Nf5 20. Kf2 Rc8 21. Rh1 Ng7 22. Ne2 Bc4 23. Nc1 Ke7 24. b3 Bf7 25. Ne2 c5 26. Nc3 b6 27. a4 Ne6 28. Nd5+ Kf8 29. Be3 Rd8 30. a5 Rd7 31. Rd3 Rd6 32. axb6 axb6 33. Ra1 f5 34. Rad1 b5 35. Rh1 f4 36. gxf4 c6 37. Nb4 Rxd3 38. Nxd3 Rf6 39. Nxc5 Nxc5 40. Bxc5+ Kg8 41. Be3 Kf8 42. b4 Ke7 43. Re1 Be6 44. c3 Kf7 45. Rh1 Kg6 46. Rg1+ Kf7 47. Rg5 Rf5 48. Kg3 Rxg5+ 1/2-1/2

[Event "AUT-NED email"]
[Site "ICCF email"]
[Date "2015.01.11"]
[Round "?.25"]
[White "Wiersma, Jacob"]
[Black "Hechl, Gerald"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2082"]
[BlackElo "2184"]
[PlyCount "104"]
[EventDate "2015.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Austria"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "AUT"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nc6 8. Qd2 0-0 9. 0-0-0 Ne5 10. Be2 Ng4 11. Bd4 c5 12. h3 cxd4 13. hxg4 dxc3 14. Qxc3 Bxg4 15. Qd3 g6 16. Nd4 Bxe2 17. Nxe2 Bf6 18. Qxd6 h5 19. c3 Re8 20. Qxd8 Bxd8 21. Nd4 Bb6 22. Kd2 Rad8 23. Kd3 Re7 24. Rde1 Bxd4 25. cxd4 Red7 26. Rh4 Kg7 27. Rhe4 Kh6 28. g3 f5 29. Rh4 Rc8 30. Rhh1 Rc6 31. Rd1 Ra6 32. a3 Kg5 33. Rc1 Kg4 34. Rh4+ Kf3 35. Rch1 Ra4 36. R1h2 g5 37. Rxh5 Raxd4+ 38. Kc3 Rg4 39. Rh8 b5 40. Rc8 Rd5 41. Rc7 Rgd4 42. Kb3 a5 43. Rc3+ Rd3 44. a4 bxa4+ 45. Kxa4 Rxc3 46. bxc3 Rc5 47. Kb3 Rc8 48. Rh5 Rg8 49. Rh2 g4 50. Ka4 Rc8 51. Kb3 a4+ 52. Kb4 a3 0-1

[Event "GER-NED email"]
[Site "ICCF email"]
[Date "2014.11.03"]
[Round "?.63"]
[White "Wiersma, Jacob"]
[Black "Windecker, Andreas"]
[Result "1/2-1/2"]
[ECO "B13"]
[PlyCount "182"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "GER"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Germany"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "GER"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 Nf6 7. Nf3 g6 8. 0-0 Bf5 9. Bxf5 gxf5 10. c4 dxc4 11. Nc3 0-0-0 12. Qa4 Rg8 13. Qxc4 e6 14. a4 a6 15. Bg5 Be7 16. Rac1 Kb8 17. Bxf6 Bxf6 18. d5 Bxc3 19. dxc6 Bf6 20. Qe2 Rd6 21. cxb7 Qxb7 22. Rc4 Bxb2 23. Rb1 Rb6 24. Rh4 a5 25. Rxh7 Rb4 26. Qd3 Be5 27. Re1 Rb3 28. Qf1 Bc3 29. Rd1 Bf6 30. Rd3 Rb2 31. Re3 Rb1 32. Re1 Rxe1 33. Nxe1 Rc8 34. Nf3 Rc7 35. Qd3 Qb4 36. Qd1 Qb2 37. Qd6 Kb7 38. Qf4 Qb1+ 39. Kh2 Qb2 40. Kg1 Qb4 41. g3 Qxf4 42. gxf4 Kc6 43. h4 Kc5 44. h5 Kb4 45. Ne5 Kxa4 46. Rh6 Be7 47. Rh7 Bf8 48. Rh8 Bg7 49. Rh7 Bf6 50. Rh6 Be7 51. Rh7 Bc5 52. h6 Kb5 53. Rh8 f6 54. Nd3 Bb6 55. h7 a4 56. Kg2 a3 57. Ra8 Rg7+ 58. Kf3 Rxh7 59. Rxa3 Bd4 60. Ra8 Ra7 61. Rb8+ Kc6 62. Rc8+ Kd7 63. Rc4 Ba1 64. Ke2 Kd6 65. Ne1 Kd5 66. Rc8 Ke4 67. Rc4+ Bd4 68. Nc2 e5 69. fxe5 fxe5 70. f4 Kxf4 71. Nxd4 exd4 72. Rxd4+ Kg3 73. Rd5 Ra2+ 74. Kf1 f4 75. Rg5+ Kf3 76. Kg1 Ra1+ 77. Kh2 Re1 78. Ra5 Kf2 79. Ra2+ Re2 80. Ra1 Kf3+ 81. Kh3 Kf2 82. Ra4 Re3+ 83. Kh2 f3 84. Ra1 Re1 85. Ra3 Re2 86. Ra1 Rd2 87. Ra3 Ke2 88. Ra1 f2 89. Kg2 Rd5 90. Ra2+ Ke1 91. Ra1+ Ke2 1/2-1/2

[Event "GER-NED email"]
[Site "ICCF email"]
[Date "2014.11.03"]
[Round "?.63"]
[White "Windecker, Andreas"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "A14"]
[PlyCount "107"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "GER"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Germany"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "NED"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. e3 b6 9. Nc3 Bb7 10. cxd5 Nxd5 11. Nxd5 exd5 12. d4 Qd6 13. Qd2 Rfd8 14. Rfd1 Rac8 15. Rac1 Qe6 16. dxc5 bxc5 17. Ne1 d4 18. Nd3 dxe3 19. Qxe3 Qxe3 20. fxe3 Bf8 21. Ba3 c4 22. Bxf8 Rxd3 23. Rxd3 cxd3 24. Ba3 Rd8 25. Rd1 f5 26. Bb2 Kf7 27. b4 Rd7 28. Bc3 g5 29. Bf1 Ba6 30. a4 Bc4 31. b5 Ne7 32. Kf2 Ke6 33. Bd4 Rc7 34. Bxd3 Bxd3 35. Rxd3 Rc2+ 36. Ke1 Ra2 37. Bxa7 Rxa4 38. Bc5 Rc4 39. Rd6+ Ke5 40. Ba3 Nc8 41. Ra6 Rc7 42. b6 Rb7 43. Ra5+ Ke6 44. Bc5 Kd7 45. Ke2 Kc6 46. Kf3 Rd7 47. Bd4 Nd6 48. Re5 Rb7 49. Rc5+ Kd7 50. Rc1 Nf7 51. Ra1 Kc6 52. Ra7 Nd6 53. Rxb7 Kxb7 54. g4 1-0

[Event "NED-POR email"]
[Site "ICCF email"]
[Date "2014.10.01"]
[Round "?.21"]
[White "Elias, Benjamim do Vale"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2038"]
[PlyCount "97"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Portugal"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "POR"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. 0-0 d6 7. Bb3 0-0 8. h3 h6 9. Re1 Re8 10. Nbd2 Be6 11. Bxe6 Rxe6 12. b4 Ba7 13. a4 d5 14. Bb2 b5 15. axb5 axb5 16. Qb3 Rb8 17. Nf1 dxe4 18. dxe4 Nh5 19. Rad1 Qf6 20. Bc1 Rd6 21. N1h2 Rbd8 22. Ng4 Qe6 23. Qxe6 Rxe6 24. Rd5 Nf6 25. Nxf6+ Rxf6 26. Rxb5 Rd3 27. Be3 Rxc3 28. Bxa7 Nxa7 29. Rxe5 Nc6 30. Re8+ Kh7 31. b5 Nb4 32. Kh2 Rc2 33. e5 Rg6 34. Re4 Nd3 35. Rd4 Nxf2 36. Rdd8 Rxg2+ 37. Kxg2 Ne4+ 38. Kf1 Rf2+ 39. Kg1 Rxf3 40. Rd7 Rg3+ 41. Kh2 Rb3 42. Rxf7 Rxb5 43. Ree7 Rb2+ 44. Kg1 Rb1+ 45. Kg2 Rb2+ 46. Kf1 Ng3+ 47. Ke1 Nh5 48. Rxc7 Rb5 49. Rce7 1-0

[Event "NED-POR email"]
[Site "ICCF email"]
[Date "2014.10.01"]
[Round "?.21"]
[White "Wiersma, Jacob"]
[Black "Elias, Benjamim do Vale"]
[Result "0-1"]
[ECO "B76"]
[BlackElo "2038"]
[PlyCount "82"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Portugal"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "POR"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Nxd4 11. Bxd4 b5 12. h4 h5 13. 0-0-0 a5 14. e5 dxe5 15. Bxe5 e6 16. Bxf6 Qxf6 17. Qxd7 a4 18. Qxb5 axb3 19. axb3 Rfc8 20. Qb7 Kh7 21. Qe4 Rxc3 22. bxc3 Ra2 23. Rde1 Qxc3 24. Kd1 Ra5 25. Qc4 Rd5+ 26. Ke2 Rd2+ 27. Kf1 Qb2 28. Qf4 Qxc2 29. Rh3 Rxg2 30. Qe3 Rd2 31. Qf4 Kg8 32. Qb8+ Bf8 33. Kg1 Qc5+ 34. Kh1 Qf5 35. Rg3 Rd4 36. Re4 Rxe4 37. fxe4 Qxe4+ 38. Kg1 Kg7 39. Qc7 Qd4+ 40. Kg2 Bc5 41. Qc6 e5 0-1

[Event "NED-SWE email"]
[Site "ICCF email"]
[Date "2014.09.15"]
[Round "?.36"]
[White "Olsson, Thomas"]
[Black "Wiersma, Jacob"]
[Result "0-1"]
[ECO "A17"]
[PlyCount "10"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Sweden"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "SWE"]
[BlackTeamCountry "NED"]

1. c4 e6 2. Nc3 Nf6 3. g3 d5 4. cxd5 exd5 5. d3 d4 0-1

[Event "NED-SWE email"]
[Site "ICCF email"]
[Date "2014.09.15"]
[Round "?.36"]
[White "Wiersma, Jacob"]
[Black "Olsson, Thomas"]
[Result "1-0"]
[ECO "B03"]
[PlyCount "13"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Sweden"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "SWE"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Bf5 7. Nf3 1-0

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Behling, Helmut"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2223"]
[PlyCount "119"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Nf6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bd6 9. Ng5 Bb7 10. 0-0 0-0 11. Bd2 h6 12. Nge4 Be7 13. Qc2 Rc8 14. Nxf6+ Nxf6 15. Ne4 c5 16. Nxf6+ Bxf6 17. dxc5 Bxb2 18. Bh7+ Kh8 19. Qxb2 Kxh7 20. f3 Qd3 21. Rac1 Rfd8 22. Rf2 Bc6 23. e4 Rd7 24. h3 f5 25. exf5 exf5 26. Re1 Qc4 27. Re5 Bd5 28. Qb1 g6 29. Be3 Qc3 30. Qb2 Qxb2 31. Rxb2 Bc4 32. Rd2 Rxd2 33. Bxd2 g5 34. Rxf5 Kg6 35. g4 Be6 36. Re5 Bxa2 37. Kf2 Kf6 38. f4 gxf4 39. Bc3 Be6 40. Rh5+ Ke7 41. Rxh6 Kd7 42. Bb4 a5 43. Bxa5 Rxc5 44. Rh7+ Kc8 45. Rh8+ Kb7 46. Rd8 Bd5 47. Ke2 f3+ 48. Ke3 Bc6 49. Kf2 Ka6 50. Be1 Rc4 51. Rd6 Kb6 52. Kg3 b4 53. g5 b3 54. Rd3 Ba4 55. Rd2 Rc2 56. Rxc2 bxc2 57. Bd2 Bc6 58. g6 Kc5 59. g7 Bd5 60. h4 1/2-1/2

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Jean, Pierre"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "1884"]
[PlyCount "75"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. e3 Nf6 5. Nc3 Nbd7 6. Qc2 Bd6 7. Bd3 0-0 8. 0-0 dxc4 9. Bxc4 a6 10. Rd1 b5 11. Bd3 Qc7 12. Ne4 Nxe4 13. Bxe4 f5 14. Bxc6 Bb7 15. d5 Rac8 16. Qe2 Bxc6 17. dxc6 Qxc6 18. a4 bxa4 19. Nd4 Qb6 20. Rxa4 Nc5 21. Rc4 a5 22. Qc2 Rc7 23. g3 Rfc8 24. Bd2 Be5 25. Bxa5 Qxa5 26. b4 Qb6 27. bxc5 Rxc5 28. Rxc5 Rxc5 29. Qa4 Rc8 30. Nf3 Bf6 31. e4 Qc6 32. Qxc6 Rxc6 33. e5 Be7 34. Rd7 Kf7 35. Ra7 h6 36. Nd4 Rc4 37. Nb5 Kf8 38. Ra8+ 1/2-1/2

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Kriksciunas, Bronislavas"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2285"]
[PlyCount "121"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 Nd5 11. Bd2 Nd7 12. Rd1 a5 13. Qb3 Ra6 14. Ne5 Nxe5 15. dxe5 Qe8 16. Nc3 Nxc3 17. Bxc3 Qa8 18. Bf3 Bxf3 19. exf3 Rb6 20. Qc2 Rc6 21. Qe4 Rc5 22. Rd7 Re8 23. Rad1 Qc8 24. R1d4 g6 25. Qf4 c6 26. Kg2 h5 27. h4 b6 28. g4 Rd5 29. R7xd5 exd5 30. gxh5 Bc5 31. hxg6 fxg6 32. Rd3 Qe6 33. Bd4 Kg7 34. Bxc5 bxc5 35. Rb3 Re7 36. Rb8 Qxe5 37. Qf8+ Kh7 38. Rc8 Qg7 39. Qxg7+ Kxg7 40. Rxc6 c4 41. Rd6 Re5 42. f4 Rh5 43. Kg3 Kf7 44. f3 Kg7 45. Kh3 Rf5 46. Kg4 Rh5 47. Kg3 Rf5 48. Rc6 Rf7 49. Rc5 d4 50. Rxc4 Rd7 51. Kf2 d3 52. Ke1 Rb7 53. Rc5 Rxb2 54. f5 Rh2 55. fxg6 Rxh4 56. Rxa5 Kxg6 57. Kd2 Rf4 58. Ra8 Rxf3 59. a5 Rf2+ 60. Kxd3 Rf4 61. Kc3 1/2-1/2

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Ishemguzhin, Igor Evgenevich"]
[Result "1-0"]
[ECO "B13"]
[BlackElo "2181"]
[PlyCount "113"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc8 7. Bf4 Nc6 8. h3 Bh5 9. Nd2 e6 10. Ngf3 Be7 11. 0-0 0-0 12. Rfe1 a6 13. Rac1 b5 14. a4 Na5 15. Qc2 Bg6 16. Bxg6 hxg6 17. Ne5 Nd7 18. Nd3 Nc4 19. Ra1 Qc6 20. Nf3 Rfc8 21. a5 Nd6 22. Qe2 Ne4 23. Nd2 Ndf6 24. f3 Nxd2 25. Qxd2 Qc4 26. Ne5 Qb3 27. Qe2 Re8 28. Qf2 Rac8 29. Re3 Red8 30. Bg5 Re8 31. g3 Bd6 32. Bxf6 gxf6 33. Nd7 Kg7 34. Nb6 Rc6 35. Kg2 f5 36. f4 Bc7 37. Nd7 Bd6 38. c4 Qb4 39. c5 Bc7 40. Re2 f6 41. Nb6 Rd8 42. g4 fxg4 43. hxg4 g5 44. Rh1 Bxf4 45. Qf3 Rh8 46. Nxd5 Qxd4 47. Rxh8 Qxd5 48. Qxd5 exd5 49. Rd8 Be5 50. Rxd5 Kf7 51. b4 Bc3 52. Rd7+ Kg6 53. Re4 Be5 54. Rb7 Rc8 55. Rb6 Kf7 56. Rxa6 Rd8 57. Rb6 1-0

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Moya Quintero, Manuel"]
[Result "1-0"]
[ECO "C16"]
[BlackElo "1932"]
[PlyCount "99"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 0-0 8. Bd3 b6 9. Nh3 Nf5 10. Nf4 f6 11. exf6 Rxf6 12. 0-0 Ba6 13. Re1 Bxd3 14. Nxd3 Nc6 15. h4 Na5 16. h5 h6 17. a4 Qc6 18. Ra3 Nc4 19. Ra2 Raf8 20. Bf4 a5 21. Raa1 Re8 22. Reb1 Nfd6 23. f3 Nf7 24. Qg3 Rf5 25. Qg4 Ng5 26. Re1 Ref8 27. Kh1 R8f6 28. Re2 Nb2 29. Bd2 Nxa4 30. Ne5 Qe8 31. Ng6 Nb2 32. Rae1 Nc4 33. Bc1 a4 34. Nh4 Qd7 35. Nxf5 exf5 36. Qg3 Ne6 37. Bf4 a3 38. Kg1 a2 39. Ra1 Qb5 40. Be5 Nxe5 41. Qxe5 Qc4 42. Ree1 Nf8 43. Qe3 b5 44. Qd3 Qa4 45. Qd2 Qa3 46. c4 dxc4 47. c3 Ra6 48. Re2 Qb3 49. Kh2 Ne6 50. d5 1-0

[Event "Webchess op6 Gr091 email"]
[Site "ICCF email"]
[Date "2014.08.01"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "West, Michael Anthony"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "47"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 e6 4. c4 Nb6 5. Nc3 d6 6. exd6 cxd6 7. Nf3 Nc6 8. Be3 Bd7 9. Bd3 Qc7 10. a3 h6 11. 0-0 Be7 12. Rc1 0-0-0 13. d5 exd5 14. cxd5 Ne5 15. Nb5 Bxb5 16. Rxc7+ Kxc7 17. Bxb5 Nxf3+ 18. Qxf3 f6 19. Rc1+ Kb8 20. Qe4 Rc8 21. Qxe7 Rxc1+ 22. Bxc1 Nxd5 23. Qxd6+ Nc7 24. Bf4 1-0

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Groot, Peter JA"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2124"]
[PlyCount "121"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Bf5 5. fxe4 Nxe4 6. Qf3 Nxc3 7. Qxf5 e6 8. Qd3 Nd5 9. Qb5+ Nc6 10. c3 a6 11. Qe2 Bd6 12. Nf3 0-0 13. Qc2 e5 14. Bc4 Nb6 15. Ng5 g6 16. Bb3 Na5 17. 0-0 Nxb3 18. Qxb3 Qe7 19. Ne4 exd4 20. Nf6+ Kh8 21. cxd4 Qe6 22. Qf3 Be7 23. Bh6 Bxf6 24. Qxf6+ Qxf6 25. Rxf6 Nd5 26. Rf3 Rfe8 27. Rxf7 Re7 28. Rf2 Rae8 29. Raf1 Re1 30. Rf7 Rxf1+ 31. Kxf1 b6 32. Rd7 c6 33. Kf2 Kg8 34. Rg7+ Kh8 35. Ra7 a5 36. Kf3 Kg8 37. Rg7+ Kh8 38. Rd7 Kg8 39. h3 Re1 40. a3 Re6 41. g4 Re8 42. Rg7+ Kh8 43. Ra7 Kg8 44. Rd7 Re6 45. Rd8+ Kf7 46. Rh8 Nf6 47. Rf8+ Ke7 48. Rb8 Nd7 49. Bg5+ Kf7 50. Rh8 Nf6 51. Bxf6 Rxf6+ 52. Ke4 Re6+ 53. Kd3 Kg7 54. Ra8 Rf6 55. Ke4 Rf2 56. b4 Rh2 57. Ra7+ Kg8 58. bxa5 bxa5 59. g5 Rxh3 60. Rxa5 Rh4+ 61. Kd3 1/2-1/2

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Leijen, Peter"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2066"]
[PlyCount "107"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. e3 Nf6 5. Nc3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bd6 9. 0-0 0-0 10. Qc2 Bb7 11. a3 Rc8 12. b4 c5 13. bxc5 Bxf3 14. cxd6 Nd5 15. gxf3 Nxc3 16. h3 Qh4 17. Kg2 Nb6 18. Qb3 e5 19. dxe5 Qg5+ 20. Kh2 Qxe5+ 21. f4 Qxd6 22. Bxb5 Nxb5 23. Qxb5 Nc4 24. Qb3 Rfd8 25. Rg1 g6 26. Ra2 Rc6 27. Re2 Qc7 28. Rd1 Rb8 29. Qd3 Rd6 30. Qc2 Rc6 31. Qe4 Re6 32. Qg2 Rd6 33. Rxd6 Qxd6 34. Qe4 Nxa3 35. Bb2 Rd8 36. Bc3 Nb5 37. Rd2 Qf8 38. Rxd8 Qxd8 39. Be5 a5 40. Qc4 Qe8 41. Bb2 Qd7 42. Qe4 Kf8 43. Qa8+ Ke7 44. Qxa5 Qc6 45. Qb4+ Ke6 46. Qf8 Nd6 47. Ba3 Nf5 48. Qb8 h6 49. Qb3+ Qd5 50. Qa4 Nd6 51. Qa6 Kd7 52. Qxd6+ Qxd6 53. Bxd6 Kxd6 54. Kg3 1-0

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Smit, Frans P"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2054"]
[PlyCount "71"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Rd1 Bc6 10. Nc3 Bxf3 11. Bxf3 Nc6 12. Bxc6 bxc6 13. a5 Rb8 14. Ra4 Rb4 15. Na2 Rxa4 16. Qxa4 Qb8 17. Qxc4 Qb5 18. Qxb5 cxb5 19. Bf4 Nd5 20. Rc1 Nxf4 21. gxf4 Bd6 22. e3 Ra8 23. Kg2 Kf8 24. Kf3 Ke7 25. e4 Kd7 26. Ke3 Rd8 27. e5 Be7 28. Nc3 f5 29. exf6 gxf6 30. Ne4 Rg8 31. Nc5+ Bxc5 32. Rxc5 Kd6 33. Rh5 Rg7 34. b4 c6 35. Rh6 f5 36. h4 1/2-1/2

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Van Putten, Frans"]
[Black "Wiersma, Jacob"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "74"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 0-0 9. 0-0 Nc6 10. Nd5 Nxe4 11. Bb6 Qd7 12. Qd3 Nf6 13. Nxf6+ Bxf6 14. Rad1 Qf5 15. Qxd6 Qxc2 16. Bb3 Qg6 17. Bd5 Bg4 18. Rfe1 Rfe8 19. Be4 Bf5 20. Bxf5 Qxf5 21. Qd5 Rac8 22. Nd2 Bd8 23. Qb3 Bxb6 24. Qxb6 Qd7 25. Nc4 Nd4 26. Nd6 Re6 27. Nxc8 Rxb6 28. Nxb6 Qb5 29. Rc1 f6 30. Nc4 h5 31. Kf1 Kh7 32. Rc3 g5 33. a3 g4 34. Rec1 Kg6 35. h3 Nb3 36. R1c2 Qd7 37. Ke1 Nd4 0-1

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Nieuweboer, Mark"]
[Result "1/2-1/2"]
[ECO "C17"]
[BlackElo "2071"]
[PlyCount "86"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Nh6 6. Nb5 Bxd2+ 7. Qxd2 0-0 8. dxc5 Nc6 9. Nf3 b6 10. Qc3 Bd7 11. h3 Nf5 12. Nd6 Nh4 13. Nxh4 Qxh4 14. g3 Qb4 15. Qxb4 Nxb4 16. 0-0-0 Nxa2+ 17. Kb1 Nb4 18. c3 Nc6 19. cxb6 axb6 20. f4 Ra5 21. Kc2 Rfa8 22. Rg1 Kf8 23. Rg2 Ke7 24. Rgd2 Ra2 25. Bb5 f6 26. Re1 fxe5 27. fxe5 Rf8 28. Kb3 Raa8 29. Bxc6 Bxc6 30. Rd4 Rf2 31. h4 Rf3 32. Rb4 Ra6 33. Rf4 Rxf4 34. gxf4 Ba4+ 35. Kb4 Bd7 36. Rf1 g6 37. Nb5 Ra2 38. Rb1 Ra8 39. Nd4 Rf8 40. Rf1 Ra8 41. Rg1 Rf8 42. Ne2 Ra8 43. Nd4 Rf8 1/2-1/2

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Stigter, John"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "68"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nc6 8. Qd2 Be6 9. 0-0-0 Qd7 10. Kb1 a6 11. h3 0-0-0 12. Nd4 Nxd4 13. Bxd4 Rhg8 14. c4 c5 15. Bc3 Qc6 16. Qe3 g6 17. b3 b5 18. Bd3 bxc4 19. Bxc4 d5 20. Qf3 Rd7 21. Rhe1 Kb7 22. Bd3 Ka7 23. Ka1 Rc8 24. Be5 Bd8 25. Bb2 Ba5 26. Re5 Qc7 27. Rb1 Qd6 28. g4 d4 29. Re2 c4 30. bxc4 Rb8 31. Qg3 Qb6 32. c3 Bxc4 33. Bxc4 dxc3 34. Qe3 cxb2+ 0-1

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Tieken, Frank"]
[Result "0-1"]
[ECO "C45"]
[BlackElo "2055"]
[PlyCount "98"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 Ne5 8. Be2 d5 9. 0-0 0-0 10. f4 Qh6 11. Nd2 Bb6 12. Rf2 dxe4 13. Nxe4 Nd5 14. Bd2 Qg6 15. Ng5 Nd3 16. Rf3 Nxb2 17. Qb3 c5 18. f5 Qf6 19. Qxd5 cxd4 20. Kh1 Qc6 21. Qxc6 bxc6 22. Bf1 Rd8 23. cxd4 h6 24. Ne4 Rxd4 25. Bc3 Rxe4 26. Bxb2 f6 27. Bd3 Re7 28. Bc4+ Kh7 29. Rd1 Rb8 30. Bc1 Rbb7 31. g4 Re4 32. Rf4 Rxf4 33. Bxf4 Re7 34. Bd3 c5 35. Kg2 c4 36. Bf1 Re4 37. Kg3 h5 38. gxh5 Bxf5 39. Rc1 Be6 40. Bg2 Rd4 41. Bf1 Ba5 42. Be3 Bc7+ 43. Kf2 Rh4 44. h3 Be5 45. Bxa7 c3 46. Bd3+ Kg8 47. Rh1 Rxh5 48. a4 g5 49. Be3 g4 0-1

[Event "NED AOW-04 email"]
[Site "ICCF email"]
[Date "2014.05.19"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Van Neijhof, Ron A"]
[Result "1/2-1/2"]
[ECO "C45"]
[BlackElo "2034"]
[PlyCount "116"]
[EventDate "2014.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Nd5 7. c4 Ne7 8. Bd3 Ng6 9. 0-0 d6 10. exd6 Bxd6 11. Re1+ Be6 12. Qc2 0-0 13. c5 Be7 14. Be3 Bf6 15. Nc3 Qb8 16. f4 Bd5 17. Re2 Re8 18. Rae1 Rxe3 19. Rxe3 Bd4 20. g3 Qb4 21. Kf1 Bxe3 22. Rxe3 Qd4 23. Nxd5 cxd5 24. Re2 Rb8 25. b3 c6 26. Kg2 a5 27. h4 Nf8 28. Re7 a4 29. Rc7 axb3 30. axb3 Re8 31. h5 Re3 32. Bf1 Qf6 33. b4 Ra3 34. Rb7 h6 35. b5 cxb5 36. Rb8 Rc3 37. Qe2 Rxc5 38. Qe8 Rc2+ 39. Kh1 Qd6 40. Rb7 Qe6 41. Qxe6 fxe6 42. Bxb5 Rb2 43. Rb8 d4 44. f5 d3 45. fxe6 d2 46. Rd8 d1Q+ 47. Rxd1 Rxb5 48. e7 Rxh5+ 49. Kg2 Re5 50. exf8Q+ Kxf8 51. g4 Re3 52. Kf2 Rb3 53. Rd7 Kg8 54. Ra7 g6 55. Rc7 Rb8 56. Kg3 Rb6 57. Ra7 Rd6 58. Rb7 Rd3+ 1/2-1/2

[Event "NED-SUI email"]
[Site "ICCF email"]
[Date "2014.05.15"]
[Round "?.40"]
[White "Welti, Manfred"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2006"]
[PlyCount "51"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "NED"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. Qc2 c5 7. d4 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Rd1 Ba6 11. Nd2 Qb6 12. b3 Rad8 13. Bb2 d4 14. Nf3 c5 15. e3 dxe3 16. fxe3 Bb7 17. Ng5 Rxd1+ 18. Rxd1 g6 19. Bxb7 Qxb7 20. Qc3 h6 21. Rf1 Qb4 22. Qxb4 cxb4 23. Bxf6 Bxf6 24. Nh3 Kg7 25. Rd1 Rd8 26. Rxd8 1/2-1/2

[Event "NED-SUI email"]
[Site "ICCF email"]
[Date "2014.05.15"]
[Round "?.40"]
[White "Wiersma, Jacob"]
[Black "Welti, Manfred"]
[Result "1/2-1/2"]
[ECO "B03"]
[BlackElo "2006"]
[PlyCount "78"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "SUI"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Nc6 7. Bd3 Nxd4 8. Nf3 Bg4 9. Be4 Nxf3+ 10. Bxf3 Bxf3 11. Qxf3 c6 12. 0-0 Be7 13. c5 Nc8 14. cxd6 Qxd6 15. Bf4 Qg6 16. Rad1 Qf5 17. Rfe1 0-0 18. Qg3 Re8 19. Re5 Qg6 20. Qe3 b5 21. a4 b4 22. Ne2 Rf8 23. Qb3 Bf6 24. Rc5 Nb6 25. a5 Be7 26. Re5 Bf6 27. axb6 Bxe5 28. Bxe5 axb6 29. Nf4 Qf5 30. Bd6 Rfd8 31. g3 g5 32. Nh5 g4 33. Nf4 Rd7 34. Bxb4 c5 35. Rxd7 Qxd7 36. Bc3 b5 37. Be1 Re8 38. Ng2 h5 39. Qc2 Qd4 1/2-1/2

[Event "ESP-NED email"]
[Site "ICCF email"]
[Date "2014.03.15"]
[Round "?.24"]
[White "Prats Rodriguez, Jordi"]
[Black "Wiersma, Jacob"]
[Result "0-1"]
[ECO "B29"]
[PlyCount "56"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "ESP"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]
[WhiteTeam "Spain"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Be2 Nc6 3. Nf3 Nf6 4. Nc3 e5 5. 0-0 Be7 6. Bc4 d6 7. d3 0-0 8. h3 Be6 9. Re1 a6 10. a4 h6 11. Be3 Qd7 12. Nd5 Bxd5 13. exd5 Nb4 14. Bd2 Nbxd5 15. Bxd5 Nxd5 16. c4 Nf4 17. Bxf4 exf4 18. Qd2 Bf6 19. Ra2 g5 20. Nh2 Rfe8 21. Ng4 Bg7 22. f3 Rxe1+ 23. Qxe1 Re8 24. Qd2 Bd4+ 25. Nf2 d5 26. b3 dxc4 27. bxc4 f5 28. g4 fxg3 0-1

[Event "ESP-NED email"]
[Site "ICCF email"]
[Date "2014.03.15"]
[Round "?.24"]
[White "Wiersma, Jacob"]
[Black "Prats Rodriguez, Jordi"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "55"]
[EventDate "2014.??.??"]
[EventType "team-match (corr)"]
[EventRounds "2"]
[EventCountry "ESP"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Spain"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "ESP"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nf6 6. d4 Be7 7. Bd3 0-0 8. h3 Re8 9. 0-0 Nbd7 10. Bf4 c6 11. Re1 Nf8 12. Qd2 Nh5 13. Bh2 h6 14. d5 Bd7 15. Rad1 Qa5 16. Re3 cxd5 17. Rxe7 Rxe7 18. Nxd5 Qxd5 19. Bh7+ Nxh7 20. Qxd5 N7f6 21. Qxb7 Rae8 22. Bxd6 Bc8 23. Qxe7 Rxe7 24. Bxe7 Be6 25. Nd4 Nd5 26. Nxe6 Nxe7 27. Rd8+ Kh7 28. Nf8+ 1-0

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Faber, Krine A"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2134"]
[PlyCount "116"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4 7. Nxd4 Ne7 8. c4 Nbc6 9. Qa4 a6 10. Nd2 Rc8 11. Rc1 Qd7 12. cxd5 Nxd5 13. Nxc6 Bb4 14. Bf3 Rxc6 15. Rxc6 Qxc6 16. Qxc6+ bxc6 17. Ke2 Kd7 18. Nc4 Rb8 19. Rd1 Kc7 20. Bd2 h6 21. a3 Be7 22. b4 Bc2 23. Rc1 Ba4 24. Nb2 Bb5+ 25. Ke1 Nb6 26. Bh5 g6 27. Bf3 h5 28. Bd1 Rd8 29. f4 Rd4 30. Bf3 Nd5 31. Rc2 Kb7 32. g3 Bd8 33. Be2 Bc7 34. Kf2 Bb6 35. Kf3 c5 36. bxc5 Bxc5 37. Rxc5 Rxd2 38. Bxb5 axb5 39. Rxb5+ Kc6 40. a4 Rxh2 41. Nc4 Rc2 42. Na5+ Kd7 43. Rb7+ Ke8 44. Rb8+ Ke7 45. Rb7+ Ke8 46. Rb8+ Ke7 47. Ra8 Rc3+ 48. Kf2 h4 49. gxh4 Nxf4 50. Ra7+ Kf8 51. Ke1 Kg7 52. Kd1 Rc5 53. Nb3 Rxe5 54. a5 Rb5 55. Nd2 Nd3 56. Nf3 Ne5 57. Nxe5 Rxe5 58. Kc2 Rh5 1/2-1/2

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Geus, Jan"]
[Black "Wiersma, Jacob"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2165"]
[PlyCount "109"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Ke8 10. h3 h5 11. Ne2 Be7 12. Bg5 Be6 13. Nf4 Bd5 14. Nxd5 cxd5 15. Rad1 c6 16. g3 f6 17. Bc1 Kf7 18. b3 Rae8 19. Bb2 Bd8 20. c4 dxc4 21. bxc4 Bb6 22. Rd7+ Re7 23. Rfd1 Rb8 24. Rxe7+ Nxe7 25. exf6 gxf6 26. Rd6 Ng8 27. Rd7+ Ne7 28. Ba3 c5 29. Nd2 Ke6 30. Rd3 Nc6 31. Re3+ Kf7 32. Ne4 Ne5 33. Bxc5 Bxc5 34. Nxc5 Nxc4 35. Rd3 Ne5 36. Ra3 Nc6 37. Kg2 Ke7 38. Nd3 a5 39. Rc3 h4 40. gxh4 Kd6 41. Nf4 b5 42. h5 b4 43. Rd3+ Ke5 44. Ng6+ Ke6 45. h6 Ne5 46. Nxe5 fxe5 47. Rg3 Kf6 48. Rg7 Rh8 49. Ra7 Rxh6 50. Rxa5 Kf5 51. Rb5 Rg6+ 52. Kh2 Kf4 53. Rxb4+ Kf3 54. Rg4 Ra6 55. Rg5 1/2-1/2

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Goudriaan, Etienne"]
[Black "Wiersma, Jacob"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "99"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Bd2 Qxd4 7. Bxb4 Qxe4+ 8. Be2 Na6 9. Ba5 f6 10. Nf3 b6 11. Nd2 Qf4 12. Bh5+ g6 13. Bf3 Ne7 14. Bc3 0-0 15. 0-0 e5 16. Ne4 Bf5 17. Bd2 Qh4 18. Re1 g5 19. Bc3 g4 20. g3 Qh5 21. Bg2 Qg6 22. b4 Rad8 23. Qa4 Bc8 24. Rad1 f5 25. Nd2 e4 26. Nf1 h5 27. Ne3 h4 28. a3 Qh6 29. Be5 Qe6 30. Bb2 Qh6 31. Rxd8 Rxd8 32. Rd1 Rxd1+ 33. Qxd1 Kf7 34. Qd8 Qe6 35. Bf1 h3 36. Bc3 Qd7 37. Qh8 Nc7 38. b5 c5 39. Qh7+ Ke8 40. Be5 Ne6 41. Qh5+ Kd8 42. Bf6 Nc7 43. Be2 Qe8 44. Qg5 Qd7 45. Qg7 Ne6 46. Qh8+ Qe8 47. Bxe7+ Kd7 48. Qxe8+ Kxe8 49. Nxf5 Nd4 50. Nd6+ 1-0

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Van Dam, Joost"]
[Black "Wiersma, Jacob"]
[Result "0-1"]
[ECO "C37"]
[PlyCount "74"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. 0-0 gxf3 6. Qxf3 Qf6 7. e5 Qxe5 8. Bxf7+ Kxf7 9. d4 Qf5 10. g4 Qf6 11. Nc3 Ke8 12. Nd5 Qg6 13. Bxf4 d6 14. Rae1+ Be7 15. Bg3 Kd8 16. Bh4 Be6 17. Nxe7 Nxe7 18. Bxe7+ Kc8 19. g5 Re8 20. Qe3 Bd5 21. c4 Bxc4 22. Rf8 Rxf8 23. Bxf8 b6 24. h4 Kb7 25. Be7 Bd5 26. a4 Qf5 27. Qg3 Nc6 28. Bf6 Rf8 29. a5 Rxf6 30. a6+ Kxa6 31. gxf6 Nxd4 32. Re3 Qb1+ 33. Kf2 Qxb2+ 34. Kf1 Qb1+ 35. Kf2 Qf5+ 36. Kg1 Qxf6 37. Ra3+ Kb7 0-1

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Faber, Krine A"]
[Result "1-0"]
[ECO "B13"]
[BlackElo "2134"]
[PlyCount "107"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 Nf6 7. Nf3 g6 8. 0-0 Bg7 9. Re1 0-0 10. Bg5 Re8 11. Nbd2 Nh5 12. Qc2 Nf4 13. Bxf4 Qxf4 14. Re3 a6 15. Nb3 b6 16. Qe2 Qc7 17. Ne5 Nxe5 18. dxe5 Bh6 19. Rf3 Bg7 20. Re1 e6 21. h4 b5 22. h5 Bd7 23. Qe3 Bc6 24. Nd4 Rec8 25. hxg6 hxg6 26. Rh3 Qe7 27. a3 Be8 28. g4 a5 29. Bxb5 Bxb5 30. Nxb5 Rc4 31. Nd4 Rb8 32. b3 Rcc8 33. a4 Rc5 34. Kg2 Qc7 35. Qg3 Re8 36. Nb5 Qc6 37. Qf4 Re7 38. Nd4 Qc7 39. Ree3 Qb6 40. Rh1 Qc7 41. Nb5 Qc6 42. Nd4 Qc7 43. Qg5 Re8 44. Nb5 Qc6 45. Rf3 Rxb5 46. axb5 Qxb5 47. Qf4 Rf8 48. Qh2 f5 49. Qh7+ Kf7 50. gxf5 exf5 51. Rh6 Qc6 52. Rxf5+ Ke8 53. Qxg7 d4+ 54. f3 1-0

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Geus, Jan"]
[Result "1/2-1/2"]
[ECO "B90"]
[BlackElo "2165"]
[PlyCount "72"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Nbd7 9. Qd2 b5 10. 0-0-0 Be7 11. g4 0-0 12. g5 b4 13. Ne2 Ne8 14. f4 a5 15. f5 a4 16. Nbd4 exd4 17. Nxd4 b3 18. Kb1 bxc2+ 19. Nxc2 Bb3 20. axb3 axb3 21. Na3 Ne5 22. h4 Ra4 23. Bd4 Nf3 24. Qc3 Nxd4 25. Rxd4 Rxd4 26. Qxd4 d5 27. Qxd5 Qb6 28. Bc4 Bxa3 29. bxa3 Nd6 30. g6 hxg6 31. fxg6 Nxc4 32. gxf7+ Rxf7 33. Qxc4 Qf2 34. Qxb3 Kh7 35. e5 Rc7 36. Rd1 g6 1/2-1/2

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Goudriaan, Etienne"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "70"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 h5 10. 0-0-0 Nbd7 11. Kb1 Qc7 12. h3 h4 13. f4 b5 14. Bd3 Rb8 15. a3 Bc4 16. f5 a5 17. Rhe1 b4 18. Bxc4 Qxc4 19. axb4 Qxb4 20. Nd5 Nxd5 21. Qxd5 a4 22. Bd2 Qb6 23. Be3 Qa6 24. Nd2 0-0 25. Nc4 Nf6 26. Qd3 Qb7 27. Bc1 Rfc8 28. Ka1 d5 29. exd5 e4 30. Qe2 Bb4 31. Bf4 a3 32. b3 Bc3+ 33. Ka2 Bxe1 34. Bxb8 Qxb8 35. Rxe1 Nxd5 0-1

[Event "NED PRO-S email"]
[Site "ICCF email"]
[Date "2013.11.11"]
[Round "?"]
[White "Wiersma, Jacob"]
[Black "Van Dam, Joost"]
[Result "1-0"]
[ECO "B80"]
[PlyCount "63"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 Ng4 8. Bg5 Qb6 9. h3 Ne5 10. 0-0-0 Nbc6 11. Nb3 Na5 12. Be3 Nxb3+ 13. axb3 Qa5 14. Kb1 b5 15. f4 Nc6 16. Qf2 Rb8 17. Qg3 Rb7 18. f5 b4 19. Na4 Ne5 20. Qf2 Nd7 21. fxe6 fxe6 22. Bc4 Nf6 23. Nb6 Bd7 24. Nxd7 Kxd7 25. Rhf1 Be7 26. Qg3 Qh5 27. Rxd6+ Bxd6 28. Qxg7+ Kc6 29. Qxh8 Ne8 30. Be2 Qg6 31. e5 Be7 32. Bd3 1-0

