[Event "EU-chT5 qual 3-02 corr"]
[Site "ICCF corr"]
[Date "1995.??.??"]
[Round "?"]
[White "Herb, Pascal"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "D58"]
[BlackElo "2475"]
[PlyCount "50"]
[EventDate "1994.??.??"]
[EventType "team (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Bg5 Be7 5. Nc3 0-0 6. e3 h6 7. Bh4 b6 8. Rc1 Bb7 9. Bd3 Nbd7 10. cxd5 exd5 11. 0-0 Ne4 12. Bg3 Nxg3 13. hxg3 c5 14. Bb1 Nf6 15. Qb3 Bd6 16. dxc5 Bxc5 17. Rfd1 Qe7 18. Ne2 Rfd8 19. a3 g6 20. Qd3 a5 21. Nf4 Ne4 22. Nd4 Qf6 23. Qe2 a4 24. Ba2 Ra5 25. Nf3 Qf5 1/2-1/2

[Event "EU-chT5 qual 3-02 corr"]
[Site "ICCF corr"]
[Date "1995.??.??"]
[Round "?"]
[White "Van de Craen, Roger"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "A47"]
[PlyCount "53"]
[EventDate "1994.??.??"]
[EventType "team (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Nbd2 e6 5. e4 h6 6. Bxf6 Qxf6 7. Bd3 Qd8 8. Qe2 a6 9. 0-0-0 Be7 10. h4 d6 11. Nc4 Nd7 12. Ne3 Nf6 13. e5 Nh5 14. g3 g6 15. Rhe1 Ng7 16. c4 d5 17. cxd5 exd5 18. h5 g5 19. Nf5 Ne6 20. Kb1 Kd7 21. Rc1 Qf8 22. Nxe7 Qxe7 23. Qc2 Qd8 24. Qb3 Ke8 25. Nh2 Qd7 26. Ng4 Kd8 27. Red1 1-0

[Event "EU-chT5 qual 3-02 corr"]
[Site "ICCF corr"]
[Date "1994.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Giulian, Philip Maurice"]
[Result "1/2-1/2"]
[ECO "D21"]
[PlyCount "61"]
[EventDate "1994.??.??"]
[EventType "team (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 cxd4 5. Bxc4 Qc7 6. Qb3 e6 7. exd4 Nc6 8. Nc3 a6 9. Qd1 Nf6 10. 0-0 Be7 11. Be3 b5 12. Bd3 0-0 13. Rc1 Bb7 14. a4 bxa4 15. Nxa4 Qd8 16. Nc5 Bxc5 17. dxc5 Qd5 18. Bc4 Qh5 19. Ng5 Qxd1 20. Rfxd1 Rfd8 21. Be2 Rxd1+ 22. Rxd1 Rd8 23. Rxd8+ Nxd8 24. Bf3 Bxf3 25. Nxf3 Nd7 26. g4 f6 27. Kf1 Kf7 28. Ke2 Nc6 29. Kd3 Nde5+ 30. Nxe5+ Nxe5+ 31. Kc3 1/2-1/2

[Event "EU-chT5 qual 3-02 corr"]
[Site "ICCF corr"]
[Date "1994.??.??"]
[Round "?"]
[White "Trapl, Jindrich"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "E90"]
[PlyCount "59"]
[EventDate "1994.??.??"]
[EventType "team (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. h3 e5 7. d5 a5 8. Bg5 Na6 9. g4 Nc5 10. Nd2 h6 11. Be3 Ne8 12. h4 f5 13. exf5 gxf5 14. g5 e4 15. Qh5 Qe7 16. gxh6 Bf6 17. 0-0-0 Kh7 18. Be2 f4 19. Bxc5 Bxc3 20. Nxe4 Nf6 21. Ng5+ Kh8 22. Qg6 dxc5 23. bxc3 Ra6 24. Bd3 Ng8 25. Qh7+ Qxh7 26. Nxh7 Re8 27. Ng5 Nxh6 28. Rde1 Bd7 29. Rxe8+ Bxe8 30. Ne6 1-0

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Haataja, Riku"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "40"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. c3 Nc6 8. 0-0 Qe7 9. Qb3 Nf6 10. Nbd2 g4 11. Ne1 Nh5 12. Bb5 Bd7 13. d5 Nd4 14. Bxd7+ Kxd7 15. Qc4 Ng3 16. cxd4 Nxf1 17. Kxf1 Qxh4 18. Nb3 Rae8 19. Qe2 Qh1+ 20. Kf2 g3+ 0-1

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Jerabek, Petr"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "36"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. c3 Nc6 8. 0-0 Bg4 9. Qb3 Na5 10. Bxf7+ Kf8 11. Qa3 Kxf7 12. Qxa5 Bxf3 13. Rxf3 c5 14. Qxd8 Rxd8 15. d5 Be5 16. g3 g4 17. Rf1 f3 18. Bf4 Bxf4 0-1

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Keith, Daniel"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "42"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. c3 Nc6 8. 0-0 Qe7 9. Bb5 Bd7 10. Re1 0-0-0 11. d5 Ne5 12. Bxd7+ Qxd7 13. Nxe5 Bxe5 14. Qf3 Ne7 15. h5 f5 16. Nd2 fxe4 17. Qxe4 Nf5 18. Nf3 Rde8 19. Qd3 Ng3 20. Bd2 Nxh5 21. a4 g4 0-1

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Laurent, Claude"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "42"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 Nc6 7. c3 Qe7 8. 0-0 a6 9. Na3 d6 10. Qe1 Bd7 11. Bd5 0-0-0 12. Bxc6 Bxc6 13. d5 Ba4 14. b3 Bd7 15. Bd2 f5 16. exf5 Qf7 17. Qf2 Qxd5 18. Rad1 Qxf5 19. Nc4 Ne7 20. Rfe1 Nc6 21. Nd4 Qg4 0-1

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Haataja, Riku"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "41"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 d6 6. d4 h6 7. g3 Bh3 8. gxf4 Qd7 9. f5 Bxf1 10. Kxf1 Nf6 11. Bd3 Nc6 12. c3 Rd8 13. Be3 0-0 14. Nbd2 d5 15. e5 Ng4 16. Bg1 Rfe8 17. h3 Ngxe5 18. dxe5 Nxe5 19. Nxe5 Bxe5 20. Qh5 Kg7 21. h4 1-0

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Jerabek, Petr"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "31"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 d6 6. d4 h6 7. c3 Nc6 8. h4 Bg4 9. Qb3 Nge7 10. hxg5 hxg5 11. Nxg5 d5 12. exd5 Nxd5 13. Nxf7 Nxd4 14. Qxb7 Kxf7 15. Rxf4+ Nf5 16. Bxd5+ 1-0

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Keith, Daniel"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "43"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 d6 6. c3 h6 7. d4 Nc6 8. h4 g4 9. Ne1 f3 10. gxf3 Qxh4 11. f4 g3 12. Nf3 Qh3 13. f5 g2 14. Re1 Nf6 15. Nh2 Bd7 16. Nd2 0-0-0 17. Ndf3 Rhe8 18. Bd3 Ng4 19. Bf4 Bf6 20. Qd2 Rg8 21. Bc4 Nxh2 22. Nxh2 1-0

[Event "ICCF theme4 corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Laurent, Claude"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "47"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 d6 6. Nc3 h6 7. d3 Nc6 8. Bd2 g4 9. Ne1 Nge7 10. Rxf4 Bd4+ 11. Kh1 Ne5 12. Bb3 Bd7 13. Qe2 N7g6 14. Rf1 Qh4 15. g3 Qh3 16. Nd5 0-0-0 17. c3 Nf3 18. Nxf3 gxf3 19. Qxf3 Be5 20. Qf2 Rhg8 21. Qxa7 Bc6 22. Qa8+ Kd7 23. Rxf7+ Ke8 24. Nxc7# 1-0

[Event "Theme3 corr"]
[Site "corr"]
[Date "1991.??.??"]
[Round "?"]
[White "Beth, Noel"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "A55"]
[PlyCount "57"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. e4 c6 6. Be2 Be7 7. 0-0 0-0 8. Re1 a6 9. Bf1 b5 10. a3 Re8 11. h3 Bb7 12. Bg5 h6 13. Be3 Bf8 14. Qc2 Qc7 15. Rad1 bxc4 16. dxe5 dxe5 17. Bxc4 c5 18. Qb3 Nb6 19. Bc1 Rab8 20. Re2 Nxc4 21. Qxc4 Red8 22. Rxd8 Rxd8 23. b3 Bd6 24. Bb2 Re8 25. Nh4 Nh5 26. Nf5 Nf4 27. Rd2 Bf8 28. f3 Ne6 29. Nd5 1-0

[Event "Theme3 corr"]
[Site "corr"]
[Date "1991.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Beth, Noel"]
[Result "0-1"]
[ECO "A55"]
[PlyCount "58"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 Be7 6. Be2 c6 7. 0-0 0-0 8. Re1 Re8 9. Bf1 a6 10. a3 Qc7 11. h3 Nf8 12. b4 Ng6 13. Be3 a5 14. b5 c5 15. dxc5 dxc5 16. Nd5 Qd6 17. Qc2 b6 18. Rad1 Nxd5 19. Rxd5 Qc7 20. Bc1 Bb7 21. Rdd1 Bf6 22. a4 Qe7 23. Bd3 Qe6 24. Rf1 Rac8 25. Nh2 Qe7 26. Ng4 Bg5 27. Ne3 Bxe3 28. Bxe3 Qh4 29. f3 Nf4 0-1

[Event "NED-ch H corr"]
[Site "Netherlands"]
[Date "1991.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "De Boer, Pieter"]
[Result "1/2-1/2"]
[ECO "A84"]
[PlyCount "46"]
[EventDate "1991.??.??"]
[EventType "swiss (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 f5 5. Bg5 Be7 6. Bxe7 Nxe7 7. e3 0-0 8. Be2 Bd7 9. 0-0 Be8 10. Qb3 Qb6 11. Qxb6 axb6 12. Rac1 Bh5 13. b3 Nd7 14. a4 Ng6 15. h3 Rae8 16. Rc2 Nf6 17. Rfc1 Ne4 18. Nh4 Bxe2 19. Nxg6 Bd3 20. Nxf8 Bxc2 21. Nxe4 fxe4 22. Nd7 Bxb3 23. cxd5 Bxd5 1/2-1/2

[Event "ICCF theme04 corr"]
[Site "ICCF corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Ballan, Michel"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "B78"]
[PlyCount "50"]
[EventDate "1989.04.01"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. h4 h5 13. Bg5 Rc5 14. f4 Nc4 15. Qd3 b5 16. e5 Qb6 17. e6 Bc6 18. Nxc6 Rxc6 19. exf7+ Kxf7 20. Rhg1 Nh7 21. g3 d5 22. Rde1 Nxg5 23. fxg5 d4 24. Rgf1+ Kg8 25. Nd1 Rxf1 0-1

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Deneuville, Christian"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "C18"]
[PlyCount "57"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. Nb5 Bc7 9. Qxg7 Rg8 10. Qxh7 a6 11. Nxc7+ Qxc7 12. Ne2 Qxe5 13. f4 Qf6 14. Bb2 Nbc6 15. Qd3 Nf5 16. 0-0-0 Qh6 17. Kb1 Bd7 18. g3 Rc8 19. Nxd4 Ncxd4 20. Bxd4 Nxg3 21. Rg1 Qxh2 22. Rd2 Qh4 23. Rdg2 Bb5 24. Qf3 Bxf1 25. Rxg3 Rxg3 26. Rxg3 Be2 27. Qe3 Bg4 28. Qg1 f5 29. Re3 1/2-1/2

[Event "ICCF theme04 corr"]
[Site "ICCF corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Ballan, Michel"]
[Result "1-0"]
[ECO "B78"]
[PlyCount "51"]
[EventDate "1989.04.01"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. h4 h5 11. 0-0-0 Ne5 12. Bb3 Rc8 13. Bh6 Bxh6 14. Qxh6 Rxc3 15. bxc3 Qa5 16. Kb1 Rc8 17. g4 hxg4 18. h5 Nxh5 19. f4 e6 20. fxe5 Qxe5 21. Nf5 Re8 22. Nxd6 Rf8 23. Nf5 exf5 24. Qxg6+ Qg7 25. Qxh5 Be6 26. exf5 1-0

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Deneuville, Christian"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "39"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Bd7 10. Bb2 Nbc6 11. Bd3 a6 12. Nxc7+ Qxc7 13. Nxd4 Nxd4 14. Bxd4 Nc6 15. Bc5 Na7 16. Qg4 Rg8 17. Bxh7 b6 18. Bxg8 bxc5 19. Qxg7 cxb4 20. Bxf7+ 1-0

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Hauser, Jack"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "64"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Bd7 10. Bb2 Bxb5 11. Bxb5+ Nbc6 12. Bd3 Bb6 13. 0-0 a6 14. Kh1 h6 15. Qd2 0-0 16. a4 Qc7 17. b5 axb5 18. axb5 Na5 19. Bxd4 Nc4 20. Qf2 Bxd4 21. Qxd4 b6 22. g3 Na3 23. Rfc1 Ra5 24. Qf2 Rfa8 25. Nd4 Nc4 26. Qe1 Nb2 27. Be2 Ra4 28. Rxa4 Rxa4 29. c3 Ra3 30. Kg1 Qc5 31. Kh1 Na4 32. Bf1 Rxc3 0-1

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Luoma, Jaska"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "78"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. Nb5 Bc7 9. Qxg7 Rg8 10. Qxh7 a6 11. Nxc7+ Qxc7 12. Ne2 Qxe5 13. Bb2 Qf6 14. f4 Nbc6 15. Qd3 Nf5 16. 0-0-0 Qh6 17. Re1 Bd7 18. Qd2 Rc8 19. Nxd4 Ncxd4 20. Bxd4 Rg4 21. Be5 f6 22. Bb2 Rxf4 23. Be2 e5 24. Bd1 Rf2 25. Qxh6 Nxh6 26. Rhf1 Rxf1 27. Rxf1 Ke7 28. h3 Nf5 29. Bf3 Ne3 30. Rf2 Bf5 31. Bxd5 Nxd5 32. Rxf5 Nf4 33. Kb1 b5 34. Bc1 Nxg2 35. Kb2 Ke6 36. Rf2 Nh4 37. c3 Rg8 38. Kc2 Rg3 39. Rh2 f5 0-1

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Meder, Uwe"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "45"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Bd7 10. Bb2 Nbc6 11. Bd3 a6 12. Nxc7+ Qxc7 13. 0-0 Qb6 14. Kh1 0-0-0 15. a4 Qxb4 16. Ba3 Qa5 17. Nxd4 h5 18. Nb3 Qb6 19. Rb1 Ng6 20. Bc5 Qc7 21. a5 Nxa5 22. Nxa5 b5 23. Nb3 1-0

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Hauser, Jack"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "57"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Nbc6 10. Bd3 a6 11. Nxc7+ Qxc7 12. 0-0 Bd7 13. Bb2 Qb6 14. Kh1 0-0-0 15. a4 Qxb4 16. Ba3 Qa5 17. Qe2 Rde8 18. Rfb1 Ng6 19. g3 f6 20. Bd6 fxe5 21. fxe5 Nge7 22. Nd2 g6 23. Nb3 Qc3 24. Nc5 Na5 25. Nxa6 Nac6 26. Ra3 Qa5 27. Bc7 Qxc7 28. Nxc7 Kxc7 29. a5 1-0

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Luoma, Jaska"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "40"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Bd7 10. Bb2 Nbc6 11. Bd3 a6 12. Nxc7+ Qxc7 13. 0-0 Qb6 14. Kh1 Rc8 15. g4 f6 16. Qe2 0-0 17. Rad1 fxe5 18. Nxe5 Qd8 19. Rf3 Nxe5 20. Qxe5 Nc6 1-0

[Event "W theme07 corr8991"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Meder, Uwe"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "42"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. Nb5 Bc7 9. Qxg7 Rg8 10. Qxh7 a6 11. Nxc7+ Qxc7 12. Ne2 Qxe5 13. Bb2 Qf6 14. 0-0-0 Nbc6 15. Nxd4 Qxf2 16. Nxc6 bxc6 17. Bd4 Qf4+ 18. Kb1 e5 19. Bc5 Bf5 20. Qh5 Bg4 21. Qh7 Bxd1 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Beckman, Bengt Goeran"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "55"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. c3 Nc6 8. 0-0 g4 9. Nh2 Qxh4 10. Rxf4 Nf6 11. Be3 0-0 12. Nd2 Nh5 13. Ndf3 Qe7 14. Rxg4 Bxg4 15. Nxg4 Qxe4 16. Nxh6+ Bxh6 17. Bxh6 Ng7 18. Qd2 Qg4 19. Rf1 Ne7 20. Ng5 d5 21. Qc2 Ngf5 22. Bxd5 Nxd5 23. Qxf5 Qxf5 24. Rxf5 Ne3 25. Rf3 Nd1 26. Bxf8 Rxf8 27. b3 Kg7 28. Rd3 1-0

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Brazlik, J."]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "30"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. Bxf4 gxf4 7. h3 f5 8. Nfd2 Qh4+ 9. Kf1 Bxd4 10. Qe2 Bxb2 11. exf5+ Qe7 12. Qh5+ Kd8 13. Nc3 Bxa1 14. Nd5 Nf6 15. Nxf6 Bxf6 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Beckman, Bengt Goeran"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "70"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. c3 Nc6 8. 0-0 Qe7 9. Qb3 Nf6 10. hxg5 hxg5 11. Nxg5 Nxd4 12. Bxf7+ Kd8 13. cxd4 Nxe4 14. Bxf4 Bxd4+ 15. Be3 Bxe3+ 16. Qxe3 Nxg5 17. Qxe7+ Kxe7 18. Bb3 Be6 19. Re1 Rh6 20. Nc3 c6 21. Rad1 Rah8 22. Kf2 Rf8+ 23. Kg1 d5 24. Rd4 Rg8 25. Bd1 Nh3+ 26. Kf1 Rf8+ 27. Bf3 Ng5 28. Rb4 b5 29. Re3 a5 30. Rd4 b4 31. Na4 Kd6 32. Rdd3 Bf5 33. Rd2 Be4 34. Rf2 Rh1+ 35. Ke2 Bc2 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Brazlik, J."]
[Result "1/2-1/2"]
[ECO "C38"]
[PlyCount "43"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 d6 6. d4 Be6 7. Bxe6 fxe6 8. c3 Nc6 9. Qb3 Kd7 10. d5 exd5 11. exd5 Ne5 12. Qxb7 Nxf3+ 13. Rxf3 Nf6 14. Qc6+ Ke7 15. Nd2 Re8 16. Nc4 Kf7 17. Bd2 Rb8 18. Re1 Rxe1+ 19. Bxe1 Qd7 20. Qxd7+ Nxd7 21. Rd3 Ne5 22. Nxe5+ 1/2-1/2

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Korhonen, Teuvo"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "35"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. 0-0 h6 7. c3 Nc6 8. g3 Bh3 9. gxf4 Qd7 10. Rf2 Nf6 11. Qe1 0-0-0 12. Bb5 Rhe8 13. Nbd2 Ng4 14. Re2 gxf4 15. Qh4 Nf6 16. d5 Qg4+ 17. Qxg4+ Nxg4 18. dxc6 1-0

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Sekala, Stanislaw"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "71"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. h4 h6 7. c3 Nc6 8. 0-0 Bg4 9. Qb3 Qe7 10. Qxb7 Rb8 11. Qxc6+ Bd7 12. Qxc7 Rc8 13. Bxf7+ Kxf7 14. Qxa7 Nf6 15. hxg5 Nxe4 16. Re1 Ra8 17. Qb7 Bf5 18. Qxe7+ Kxe7 19. Bxf4 hxg5 20. Bxg5+ Kd7 21. Nbd2 d5 22. Bf4 Bh6 23. Bxh6 Rxh6 24. Ne5+ Ke6 25. Kf1 Nxd2+ 26. Kg1 Kf6 27. g4 Rg8 28. Re2 Nf3+ 29. Nxf3 Bxg4 30. Rg2 Rgh8 31. Kf2 Kf5 32. Rag1 Bxf3 33. Kxf3 Rf6 34. Ke3 Re6+ 35. Kd3 Kf4 36. Rf2# 1-0

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Sery, Jaroslav"]
[Result "1-0"]
[ECO "C38"]
[PlyCount "71"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. h4 h6 7. c3 Be6 8. Bxe6 fxe6 9. Qb3 b6 10. Qxe6+ Qe7 11. Qxe7+ Nxe7 12. hxg5 hxg5 13. Rxh8+ Bxh8 14. Nxg5 Ng6 15. Ne6 Kd7 16. Nxf4 Nf8 17. Be3 Nc6 18. Nd2 Nh7 19. d5 Ne5 20. 0-0-0 Ng4 21. Rh1 Nhf6 22. Bd4 c5 23. Bxf6 Bxf6 24. Rh7+ Kc8 25. Nc4 Be5 26. Nd3 Nf6 27. Rh8+ Kb7 28. Rxa8 Kxa8 29. Ndxe5 dxe5 30. d6 Kb7 31. Nxe5 Nxe4 32. d7 Kc7 33. d8Q+ Kxd8 34. Nc6+ Kc7 35. Nxa7 Nd6 36. a4 1-0

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Visco, Michele"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "32"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 Qe7 6. d4 a6 7. Nc3 b5 8. Nd5 Qd8 9. Bb3 Nc6 10. Nxg5 Bxd4+ 11. Kh1 Nh6 12. Qh5 Bg7 13. Nxf7 Nxf7 14. Nb6 Nce5 15. Rxf4 cxb6 16. Qxf7+ Nxf7 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Korhonen, Teuvo"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "24"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. h4 h6 7. c3 Nc6 8. Qb3 Qe7 9. 0-0 Nf6 10. hxg5 hxg5 11. Nxg5 Nxd4 12. Nxf7 Nxb3 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Sekala, Stanislaw"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "114"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. 0-0 h6 6. d4 d6 7. c3 Nc6 8. g3 Bh3 9. Re1 g4 10. Nh4 fxg3 11. hxg3 Na5 12. Na3 Nxc4 13. Nxc4 Ne7 14. Nf5 Nxf5 15. exf5+ Kd7 16. Qa4+ Kc8 17. Na5 Rb8 18. Bf4 Qd7 19. Qc2 Re8 20. Qf2 d5 21. Rxe8+ Qxe8 22. c4 Qa4 23. Bd2 b6 24. b3 Qd7 25. f6 Bf8 26. c5 bxa5 27. Bxa5 h5 28. Re1 Rb5 29. Bd2 Rb7 30. Re5 Rb8 31. Rxh5 Kb7 32. Re5 Re8 33. Bb4 Rxe5 34. dxe5 Kc6 35. a4 d4 36. e6 Qxe6 37. Qxd4 a5 38. Qd3 Bxc5+ 39. Bxc5 Qe1+ 40. Kh2 Kxc5 41. Qb5+ Kd4 42. Qc4+ Ke3 43. Qf4+ Kd3 44. Qc4+ Kd2 45. Qd4+ Kc2 46. Qc5+ Kd1 47. Qg1 Qxg1+ 48. Kxg1 Ke1 49. b4 axb4 50. a5 Bf1 51. Kh1 b3 52. Kh2 b2 53. a6 Bxa6 54. Kg2 b1Q 55. Kh2 Kf1 56. Kh1 Kf2+ 57. Kh2 Qg1# 0-1

[Event "W theme10 corr8890"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Sery, Jaroslav"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C38"]
[PlyCount "64"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. d4 d6 6. Nc3 g4 7. 0-0 gxf3 8. Qxf3 Bxd4+ 9. Kh1 Be6 10. Bxe6 fxe6 11. Qh5+ Kd7 12. Rxf4 Bxc3 13. bxc3 Kc8 14. Qg4 Qe7 15. Bb2 Nf6 16. Qg5 Nbd7 17. c4 e5 18. Rf3 Qe6 19. Raf1 Nxe4 20. Qg7 Qg8 21. Qe7 Qe8 22. Rf7 Nd2 23. R1f5 Qxe7 24. Rxe7 Nxc4 25. Rff7 Rd8 26. Bc1 h5 27. Bg5 Ncb6 28. Rh7 c6 29. Re6 Nf8 30. Bxd8 Nxe6 31. Be7 Kc7 32. Rxh5 e4 0-1

[Event "BEL BV 7 corr"]
[Site "Belgium"]
[Date "1987.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "De Groot, Adrianus Dingeman"]
[Result "0-1"]
[ECO "C13"]
[PlyCount "38"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BEL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. Nf3 f5 8. Nc3 Bf6 9. Qd2 c5 10. 0-0-0 a6 11. dxc5 Qxd2+ 12. Kxd2 Bd7 13. Bc4 Bc6 14. Be2 Nd7 15. b4 0-0-0 16. Nb1 Rhg8 17. Rhg1 Ne5+ 18. Kc1 Rxd1+ 19. Rxd1 Rxg2 0-1

[Event "NED theme01 corr"]
[Site "Netherlands"]
[Date "1986.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Miewold"]
[Result "1-0"]
[ECO "A56"]
[PlyCount "63"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 Ne4 4. Qc2 Nf6 5. e4 d6 6. Nc3 h6 7. f4 Na6 8. h3 Nb4 9. Qd1 e6 10. a3 Na6 11. e5 dxe5 12. fxe5 Nh7 13. Nf3 exd5 14. cxd5 Nc7 15. d6 Ne6 16. Bc4 Nd4 17. 0-0 Be6 18. Nd5 Bxd5 19. Bxd5 Nc6 20. Bxf7+ Kd7 21. Qd5 Kc8 22. Qxc5 Qb6 23. Qxb6 axb6 24. Be3 Kd7 25. Bxb6 Nd8 26. Bxd8 Rxd8 27. Rac1 Rb8 28. Rc7+ Kd8 29. e6 Nf6 30. e7+ Bxe7 31. Rxe7 b6 32. Nd4 1-0

[Event "NED theme01 corr"]
[Site "Netherlands"]
[Date "1986.??.??"]
[Round "?"]
[White "Niewold, Jaap"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "A56"]
[PlyCount "64"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 Ne4 4. Nd2 Qa5 5. f3 Nd6 6. e4 e5 7. Nh3 Be7 8. Bd3 0-0 9. 0-0 Qb6 10. Nb3 f5 11. Bg5 Bxg5 12. Nxg5 Qd8 13. Nh3 Na6 14. Qe2 fxe4 15. Bxe4 Qh4 16. Bd3 Nb4 17. Be4 Nxe4 18. fxe4 d6 19. Rxf8+ Kxf8 20. Nf2 Kg8 21. a3 Na6 22. Rf1 Bd7 23. g3 Qe7 24. Nd3 Bh3 25. Rf2 Rf8 26. Qh5 Rxf2 27. Nxf2 Bd7 28. Qf3 Nc7 29. Nd3 Ne8 30. Na5 Nf6 31. Nf2 Bc8 32. Qe3 Qc7 1/2-1/2

[Event "EU-chT3 corr8392"]
[Site "ICCF corr"]
[Date "1983.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Schendel, Andreas"]
[Result "1/2-1/2"]
[ECO "C82"]
[PlyCount "59"]
[EventDate "1983.??.??"]
[EventType "team (corr)"]
[EventRounds "11"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 0-0 11. Bc2 Nxf2 12. Rxf2 f6 13. exf6 Bxf2+ 14. Kxf2 Qxf6 15. Kg1 Rae8 16. Nf1 Ne5 17. Be3 Nxf3+ 18. Qxf3 Qxf3 19. gxf3 Rxf3 20. Bf2 Bh3 21. Ng3 g6 22. a4 Re6 23. axb5 axb5 24. Ra8+ Rf8 25. Rxf8+ Kxf8 26. Bc5+ Kf7 27. Kf2 Bg4 28. Be3 Rf6+ 29. Ke1 Ke6 30. Bd4 1/2-1/2

[Event "Purdy mem-A corr7985"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Kondali, Jovan"]
[Result "0-1"]
[ECO "A59"]
[PlyCount "94"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[EventCountry "AUS"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. e4 Bxf1 8. Kxf1 d6 9. Nf3 Bg7 10. g3 0-0 11. Kg2 Nbd7 12. h3 Qa5 13. Re1 Rfb8 14. Re2 Rb7 15. Rc2 Qa6 16. Qf1 Ne8 17. Qxa6 Rxa6 18. a3 Ne5 19. Nxe5 Bxe5 20. Bd2 f5 21. f3 fxe4 22. fxe4 Nf6 23. Re1 Rb3 24. Re2 h5 25. Bg5 Kg7 26. Bc1 Ra7 27. Re1 Nd7 28. Bf4 Bf6 29. h4 Rxb2 30. Rxb2 Bxc3 31. Ree2 Bxb2 32. Rxb2 Kf7 33. Rb3 Ra4 34. Kf3 c4 35. Rc3 e5 36. Be3 Ke8 37. g4 Kd8 38. g5 Nb8 39. Ke2 Na6 40. Bf2 Nc7 41. Rf3 Nb5 42. Rf6 Rxa3 43. Rxg6 Nc3+ 44. Ke1 Nxe4 45. Bb6+ Ke8 46. Rh6 Rh3 47. g6 Kf8 0-1

[Event "Purdy mem-A corr7985"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Rittner, Horst Robert"]
[Result "1/2-1/2"]
[ECO "E19"]
[PlyCount "60"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[EventCountry "AUS"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8. Qxc3 0-0 9. 0-0 c5 10. Rd1 d6 11. b3 Bf6 12. Bb2 Qe7 13. Qc2 Nc6 14. e4 g6 15. d5 Nb4 16. Bxf6 Qxf6 17. Qd2 e5 18. a3 Na6 19. Ne1 Qg7 20. Nd3 f5 21. f4 fxe4 22. Bxe4 exf4 23. Nxf4 Nc7 24. Rf1 Rae8 25. Rae1 Kh8 26. Bg2 Bc8 27. h4 Rxe1 28. Rxe1 Re8 29. Bh3 Bxh3 30. Nxh3 Rxe1+ 1/2-1/2

[Event "Purdy mem-A corr7985"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Nyman, Sture Valentin"]
[Black "Groeneveld, Cornelis"]
[Result "1-0"]
[ECO "B19"]
[PlyCount "77"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[EventCountry "AUS"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[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. Qe2 Qc7 13. 0-0-0 c5 14. Rh4 Be7 15. dxc5 Nxc5 16. Rc4 b5 17. Rd4 a6 18. Bf4 Qa5 19. Kb1 Na4 20. Ne5 Nd5 21. Bd2 Qc7 22. Ng6 Rc8 23. c3 fxg6 24. Qxe6 Nab6 25. hxg6 Qd7 26. Qf7+ Kd8 27. Be3 Rc6 28. R4d2 Bd6 29. Nf5 Nxe3 30. fxe3 Nc8 31. e4 Re8 32. Nxg7 Rxe4 33. Nf5 Kc7 34. Rd4 Rxd4 35. Nxd4 Rc4 36. Qxd7+ Kxd7 37. g7 Rxd4 38. cxd4 Ne7 39. Rf1 1-0

[Event "olm7 fin B6 corr"]
[Site "ICCF corr"]
[Date "1972.??.??"]
[Round "?"]
[White "Angelov, Petko Ivanov"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "58"]
[EventDate "1972.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. e5 dxe5 5. Nxe5 Nbd7 6. f4 e6 7. Na3 Be7 8. Nc2 Qc7 9. d4 b6 10. Bd3 Bb7 11. 0-0 0-0 12. Be3 Rad8 13. Qe2 g6 14. g4 Ne8 15. Nf3 Nd6 16. f5 c4 17. fxg6 cxd3 18. gxh7+ Kxh7 19. Qxd3+ Be4 20. Qe2 Rg8 21. Ne5 Nxe5 22. dxe5 Nf5 23. Rf4 Qxe5 24. Qf1 Nxe3 25. Rxf7+ Kg6 26. Nxe3 Bc5 27. Re1 Rd1 28. Rxd1 Bxe3+ 29. Rf2 Rh8 0-1

[Event "olm7 fin B6 corr"]
[Site "ICCF corr"]
[Date "1972.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Cafferty, Bernard"]
[Result "1-0"]
[ECO "E44"]
[PlyCount "99"]
[EventDate "1972.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Bb7 6. a3 Be7 7. d5 0-0 8. e4 Re8 9. g3 b5 10. e5 Ng4 11. Qd4 f5 12. cxb5 d6 13. exd6 Bf6 14. Qd2 Bxc3 15. Qxc3 Qxd6 16. Bg2 Bxd5 17. 0-0 Bxg2 18. Kxg2 Qd5+ 19. f3 Qxb5 20. Nd4 Qb7 21. Re1 Nf6 22. Nxe6 Qc6 23. Qxc6 Nxc6 24. Bf4 Nd5 25. Rac1 Nd8 26. Nxc7 Rxe1 27. Rxe1 Nxf4+ 28. gxf4 Rb8 29. b4 Kf7 30. Re5 g6 31. Nb5 a6 32. Nc7 Rb6 33. Ra5 Rc6 34. Nxa6 Nb7 35. Ra4 Rc2+ 36. Kg3 Nd6 37. Nc5 Nb5 38. Ra5 Nd4 39. Ra7+ Kg8 40. Rd7 Ne2+ 41. Kf2 Nxf4+ 42. Ke3 g5 43. a4 Rxh2 44. Rd2 Rxd2 45. Kxd2 Kf7 46. a5 Nd5 47. b5 Ke7 48. b6 Nxb6 49. axb6 Kd6 50. Ne6 1-0

[Event "olm7 fin B6 corr"]
[Site "ICCF corr"]
[Date "1972.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Omelchenko, Lev Evgenyevich"]
[Result "1/2-1/2"]
[ECO "E41"]
[PlyCount "46"]
[EventDate "1972.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 h6 11. f3 Qa5 12. Qb3 Nd7 13. Nf5 Nxf5 14. exf5 Qd8 15. 0-0 0-0 16. Bd2 Re8 17. Rae1 Rb8 18. Re2 a6 19. Rb1 Nf6 20. Qb6 Kf8 21. g4 Qxb6 22. Rxb6 Nd7 23. Rb1 b6 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Batik, Frantisek"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "E46"]
[PlyCount "48"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nge2 d5 6. a3 Be7 7. cxd5 Nxd5 8. Nxd5 exd5 9. g3 Nd7 10. Bg2 Nf6 11. 0-0 Bd6 12. Nc3 c6 13. b4 a6 14. Bd2 Re8 15. Qb3 Bf5 16. Rfe1 Ne4 17. Nxe4 dxe4 18. Rac1 Bf8 19. Bf1 Be6 20. Qc2 Bg4 21. Be2 Bxe2 22. Rxe2 Qd5 23. Qc4 Qf5 24. Bc3 Qd5 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Brilla Banfalvi, Sandor"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "E59"]
[PlyCount "44"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 0-0 7. 0-0 Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Ba2 e5 12. h3 e4 13. Nh2 Bf5 14. Bb2 Rad8 15. Qe2 Rd6 16. Rad1 Rfd8 17. f3 exf3 18. Qxf3 Bg6 19. d5 Ne5 20. Qg3 Nh5 21. Qh4 c4 22. Nf3 Rxd5 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Den Ouden, A."]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "B50"]
[PlyCount "42"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 Bg4 5. h3 Bh5 6. Bc2 Nc6 7. Qe2 d5 8. d3 e6 9. 0-0 Be7 10. Nbd2 0-0 11. g4 Bg6 12. Nh4 Ne8 13. Nxg6 fxg6 14. f4 Nc7 15. Nf3 dxe4 16. dxe4 Qe8 17. Be3 Rd8 18. a3 Bd6 19. Ng5 b5 20. a4 a6 21. axb5 axb5 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Bohatirchuk, Fedor Parfenovich"]
[Result "1/2-1/2"]
[ECO "C19"]
[PlyCount "58"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Qa5 8. Qd2 Nd7 9. a4 c4 10. Ba3 h6 11. Bb4 Qd8 12. Be2 a5 13. Ba3 Nb6 14. 0-0 Bd7 15. g3 Nxa4 16. Nh4 b5 17. f4 Nc6 18. Nf3 Nxc3 19. Qxc3 b4 20. Qe3 bxa3 21. Rxa3 Na7 22. Rfa1 Nb5 23. R3a2 Ra6 24. Bd1 Na7 25. h4 h5 26. Ne1 Nc6 27. Qd2 Qc7 28. Ra3 Qa7 29. c3 g6 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Slump, U."]
[Result "1-0"]
[ECO "B09"]
[PlyCount "29"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 0-0 6. Bd3 Nc6 7. e5 dxe5 8. fxe5 Ng4 9. Bb5 Nb4 10. a3 Nd5 11. Qe2 c5 12. Nxd5 Qxd5 13. Bc4 Qd8 14. h3 Qc7 15. hxg4 1-0

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Svensson, Erik Gosta"]
[Result "1-0"]
[ECO "D40"]
[PlyCount "83"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 e6 2. d4 d5 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 Bd6 7. dxc5 Bxc5 8. b4 Bd6 9. Bb2 0-0 10. Bd3 a5 11. b5 Ne5 12. Nxe5 Bxe5 13. f4 Bb8 14. Qf3 dxc4 15. Bxc4 e5 16. f5 e4 17. Qh3 Be5 18. 0-0 Qe7 19. Be2 Bd7 20. g4 Rfc8 21. Rfc1 Rc5 22. a4 Bxc3 23. Rxc3 Rxc3 24. Bxc3 Nd5 25. Bd4 Rc8 26. Qg3 f6 27. Qe1 Qb4 28. Qd1 Nc3 29. Bxc3 Qxc3 30. Kf2 Qc7 31. Qd5+ Kh8 32. Kg2 Be8 33. Rd1 Bf7 34. Qd7 h6 35. Qxc7 Rxc7 36. Kg3 g5 37. fxg6 Bxg6 38. b6 Re7 39. Rc1 Be8 40. Rc7 Rxc7 41. bxc7 Bd7 42. Bc4 1-0

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Trajkovic, Mihailo"]
[Result "1/2-1/2"]
[ECO "E91"]
[PlyCount "37"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 3. Nf3 d6 4. Nc3 g6 5. d5 Nb8 6. e4 e5 7. Be2 Bg7 8. 0-0 0-0 9. Ne1 Qe7 10. Bg5 h6 11. Bh4 c5 12. a3 Na6 13. Nc2 Nc7 14. b4 b6 15. bxc5 bxc5 16. Rb1 Nce8 17. Rb3 g5 18. Bg3 Nxe4 19. Nxe4 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Heilemann, Paul G"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "E02"]
[PlyCount "62"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 6. Qa4+ Bd7 7. Qxc4 Bc6 8. Nc3 Nbd7 9. 0-0 0-0 10. Qd3 Bb4 11. Rd1 h6 12. b3 Qe7 13. Bb2 Rac8 14. Ne5 Bxg2 15. Nxd7 Qxd7 16. Kxg2 Bxc3 17. Bxc3 Nd5 18. e4 Nxc3 19. Qxc3 f5 20. f3 fxe4 21. fxe4 Rf6 22. Rf1 Rxf1 23. Rxf1 Rd8 24. Rd1 Qf7 25. Qf3 Qe7 26. Qc3 Qf7 27. Qc4 c6 28. b4 Qg6 29. Qe2 a6 30. Qe3 Rf8 31. a3 Qf6 1/2-1/2

[Event "NED jub corr6972"]
[Site "Netherlands"]
[Date "1969.??.??"]
[Round "?"]
[White "Mostert, Henk Jan"]
[Black "Groeneveld, Cornelis"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "78"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 f5 8. Qg3 Ne7 9. Qxg7 Rg8 10. Qxh7 cxd4 11. Kd1 Bd7 12. Qh5+ Kd8 13. Ne2 dxc3 14. f4 Qc5 15. Qf3 d4 16. Qxb7 Nbc6 17. Qa6 Rb8 18. Qd3 Nd5 19. g3 Be8 20. Bg2 Bh5 21. Ke1 Kc7 22. h3 Ndb4 23. axb4 Nxb4 24. Qd1 Rgd8 25. Kf2 d3+ 26. Be3 Qc4 27. g4 Nxc2 28. Rxa7+ Kc8 29. Ra8 Rxa8 30. Bb6 Ra2 31. Kg3 Rg8 32. Nc1 fxg4 33. Qxd3 gxh3+ 34. Kxh3 Qxd3+ 35. Nxd3 Ne3 36. Be4 Bg4+ 37. Kh4 Nf5+ 38. Bxf5 Bxf5 39. Nf2 Rxf2 0-1

[Event "NED-ch01 corr"]
[Site "Netherlands"]
[Date "1967.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Mulder van Leens Dijkstra, Kornelis Dirk"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "111"]
[EventDate "1967.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 Nbd7 8. Bd3 Nf8 9. Nf3 Ne6 10. Bh4 g6 11. h3 Nh5 12. Bxe7 Qxe7 13. 0-0-0 Nf6 14. Rhe1 0-0 15. g4 Ng7 16. Nd2 Nfe8 17. Nf3 Nd6 18. Rg1 f5 19. Ne5 Be6 20. Qe2 Rac8 21. Bc2 Qf6 22. Nd3 Ne4 23. f4 Nxc3 24. bxc3 b6 25. Ne5 c5 26. Kb2 Rc7 27. dxc5 Rxc5 28. g5 Qe7 29. Nd3 Ra5 30. Nb4 Rc5 31. Bb3 Rd8 32. Qf3 Qb7 33. c4 a5 34. cxd5 Bf7 35. Nc6 Rd6 36. Rd4 Kf8 37. Rgd1 Qc7 38. Qg2 Be8 39. Qd2 Bd7 40. a3 Ne8 41. Ne5 Bb5 42. Nd3 Bxd3 43. Qxd3 Qg7 44. e4 fxe4 45. Qxe4 Qd7 46. Qe5 Ng7 47. Re4 Rc8 48. Rde1 Rc7 49. f5 gxf5 50. Rh4 Rc8 51. Rxh7 Kg8 52. Rh6 Rd8 53. a4 Rxh6 54. gxh6 Nh5 55. d6+ Kh7 56. Qe7+ 1-0

[Event "NED-ch01 corr"]
[Site "Netherlands"]
[Date "1967.??.??"]
[Round "?"]
[White "Pannekoek, Johannes Henricius"]
[Black "Groeneveld, Cornelis"]
[Result "1/2-1/2"]
[ECO "D58"]
[PlyCount "54"]
[EventDate "1967.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Nf3 h6 7. Bh4 b6 8. Bd3 Bb7 9. 0-0 Nbd7 10. Qe2 Ne4 11. Bg3 Nxg3 12. hxg3 c6 13. Rac1 dxc4 14. Bxc4 b5 15. Bd3 b4 16. Na4 Qa5 17. b3 Rac8 18. Rfd1 Rfd8 19. Nb2 c5 20. Nc4 Qc7 21. Nce5 Nf6 22. e4 Qb8 23. Nxf7 Kxf7 24. Ne5+ Ke8 25. Bb5+ Kf8 26. Ng6+ Kf7 27. Ne5+ Kf8 1/2-1/2

[Event "olm6 qual GP1 B5 corr"]
[Site "ICCF corr"]
[Date "1965.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Bartis, Gustavo Fernando"]
[Result "1/2-1/2"]
[ECO "D27"]
[PlyCount "58"]
[EventDate "1965.??.??"]
[EventType "team (corr)"]
[EventRounds "7"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 a6 5. Bxc4 e6 6. 0-0 c5 7. e4 b5 8. Bd3 Bb7 9. Re1 cxd4 10. Nxd4 Be7 11. e5 Nd5 12. Qg4 Kf8 13. Nd2 Nb4 14. Bb1 h5 15. Qf4 Qd5 16. f3 g5 17. Qe3 N8c6 18. N2b3 Nxd4 19. Qxd4 Qxd4+ 20. Nxd4 Nd5 21. Kh1 Kg7 22. Be4 Rhd8 23. Bd2 Rab8 24. Ba5 Rdc8 25. Bd2 Nb6 26. b3 Bxe4 27. Rxe4 Nd5 28. g3 Nc3 29. Re3 Nd5 1/2-1/2

[Event "corr"]
[Site "corr"]
[Date "1952.??.??"]
[Round "?"]
[White "Groeneveld, Cornelis"]
[Black "Oudheusden, Willem Adrianus"]
[Result "1-0"]
[ECO "E02"]
[PlyCount "95"]
[EventDate "1952.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 Bc6 7. Nf3 Bd5 8. Qd3 c5 9. 0-0 Nc6 10. dxc5 Ne4 11. Be3 Nxc5 12. Bxc5 Bxf3 13. Qxf3 Bxc5 14. Nc3 0-0 15. Rac1 Qe7 16. Qh5 g6 17. Qg4 Rac8 18. Na4 f5 19. Qc4 Bd6 20. Rfd1 Ne5 21. Qd4 Rxc1 22. Rxc1 b6 23. a3 Rd8 24. b4 Ng4 25. Qc4 Be5 26. Bf3 Nf6 27. Qb5 Bb8 28. Nc3 Ne8 29. Bc6 Nd6 30. Qa4 Nc4 31. Qb3 Nd2 32. Qa2 Be5 33. Rc2 Bxc3 34. Rxc3 Kf7 35. f3 Rd6 36. Bb5 Qf6 37. Qb2 Qd8 38. Qc2 Nb1 39. Rc8 Rd1+ 40. Kg2 Nxa3 41. Qc6 Qd4 42. Qc7+ Kf6 43. Rf8+ Kg5 44. Qe7+ Kh6 45. Rf7 Qg1+ 46. Kh3 Qf1+ 47. Kh4 Rd4+ 48. e4 1-0

