[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Passenier, Peter"]
[Black "Van der Marel, Lambertus"]
[Result "1-0"]
[WhiteElo "2170"]
[BlackElo "2087"]
[PlyCount "57"]
[EventDate "2023.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8.
Be3 O-O 9. Nxc6 bxc6 10. Bxc5 Nxc5 11. Bxc6 Rb8 12. Qxd5 Qe7 13. O-O Rxb2 14.
Nc3 Rxc2 15. Qd4 Bf5 16. Nd5 Qd8 17. Rac1 Ne6 18. Qb4 a5 19. Qa4 Rxc1 20. Rxc1
Kh8 21. Ne3 Qg5 22. h4 Qh6 23. Qxa5 Nf4 24. Qc5 g6 25. Rd1 Rb8 26. Qe7 Bd3 27.
Qf6+ Kg8 28. g3 Ne2+ 29. Kg2 1-0

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van Drunick, Jan-Willem"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[WhiteElo "1933"]
[BlackElo "2459"]
[PlyCount "32"]
[EventDate "2023.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. h3 e5 7. d5 Nh5 8. g3 Na6
9. Nh2 Nc5 10. Bg2 f5 11. exf5 Bxf5 12. Bf1 Nf4 13. gxf4 exf4 14. Bxf4 Ne4 15.
Nf3 Nxc3 16. bxc3 Be4 0-1

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van der Knaap, Jan"]
[Black "Van Efferen, Yannick"]
[Result "1-0"]
[WhiteElo "1890"]
[BlackElo "1860"]
[PlyCount "77"]
[EventDate "2023.??.??"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 Nf6 5. Nf3 O-O 6. Bd3 c5 7. dxc5 dxc5 8. e5
Nd5 9. Nxd5 Qxd5 10. Qe2 Nc6 11. Be4 Qd8 12. Be3 Qa5+ 13. c3 Bg4 14. O-O Rac8
15. h3 Bxf3 16. Qxf3 Qc7 17. g4 e6 18. Qf2 Ne7 19. Rad1 b6 20. Rd2 Rcd8 21.
Rfd1 f5 22. exf6 Bxf6 23. Qe2 Nd5 24. Bxd5 Rxd5 25. Rxd5 exd5 26. Rxd5 Qe7 27.
Qd3 Re8 28. Bf2 Bh4 29. Re5 Bxf2+ 30. Kxf2 Qh4+ 31. Qg3 Qxg3+ 32. Kxg3 Rxe5 33.
fxe5 g5 34. h4 h6 35. hxg5 hxg5 36. Kf3 Kf7 37. Ke4 Ke6 38. c4 a6 39. a4 1-0

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Margaryan, Artur"]
[Black "Timmermans, Raymond"]
[Result "1-0"]
[WhiteElo "2074"]
[BlackElo "1974"]
[PlyCount "101"]
[EventDate "2023.??.??"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Bf4 Nc6 6. Nf3 Bf5 7. e3 e6 8. Bb5
Nd7 9. O-O Be7 10. Qb3 g5 11. Be5 O-O 12. Bg3 a6 13. Bxc6 bxc6 14. Na4 c5 15.
dxc5 Nxc5 16. Nxc5 Bxc5 17. Rfc1 Rc8 18. Qa4 Qb6 19. b3 e5 20. Bxe5 Bxe3 21.
Bd4 Bxd4 22. Qxd4 Qxd4 23. Nxd4 Bd7 24. f3 Kg7 25. Kf2 Kf6 26. g3 Ke5 27. Ke3
Rfe8 28. a3 h6 29. a4 a5 30. Kd3 Kd6 31. Re1 Kc5 32. Rac1+ Kd6 33. Kd2 f6 34.
Kd3 Rb8 35. f4 Rbc8 36. Rf1 g4 37. Rfe1 Rb8 38. Rxe8 Rxe8 39. Nb5+ Bxb5+ 40.
axb5 Rb8 41. Rc6+ Kd7 42. Rc5 Ke6 43. Kd4 Rd8 44. b6 Rb8 45. Rc6+ Kf5 46. Kxd5
h5 47. Kc5 h4 48. gxh4 Kxf4 49. Rxf6+ Ke5 50. Rf7 Ke6 51. Rc7 1-0

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van Briemen, Willem"]
[Black "Vijver, Jonathan"]
[Result "0-1"]
[WhiteElo "1992"]
[BlackElo "1824"]
[PlyCount "68"]
[EventDate "2023.??.??"]

1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 g6 5. e3 Bg7 6. Nc3 O-O 7. Bd3 d6 8. h4
Nc6 9. h5 g5 10. h6 Bh8 11. Qb3 Re8 12. c5+ Kf8 13. O-O-O dxc5 14. dxc5 Qe7 15.
Qc4 Ne5 16. Be2 c6 17. Bh5 Rd8 18. Rxd8+ Qxd8 19. Nf3 Nd3+ 20. Kb1 Nxf2 21. Qb3
Qe7 22. Rf1 Be6 23. Qc2 Ne4 24. Nxe4 fxe4 25. Nxg5 Bd5 26. Rf4 Qe5 27. Nxh7+
Kg8 28. Bg6 Rd8 29. Rg4 f5 30. Bxf5+ Kf7 31. Bxe4 Bxe4 32. Ng5+ Kf8 33. Nxe4
Rd1+ 34. Qc1 Qxb2# 0-1

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van der Bent, Gideon"]
[Black "Zeven, Frank"]
[Result "0-1"]
[WhiteElo "1961"]
[BlackElo "1929"]
[PlyCount "74"]
[EventDate "2023.??.??"]

1. d4 e6 2. Nf3 f5 3. Bf4 d5 4. e3 Nf6 5. Bd3 Bd6 6. O-O O-O 7. c4 c6 8. Nc3
Qe7 9. Rc1 Ne4 10. h3 Nd7 11. Bxd6 Nxd6 12. b3 Qf6 13. Bb1 g5 14. Nd2 Rf7 15.
c5 Ne8 16. b4 e5 17. Nb3 e4 18. f3 Qh6 19. fxe4 fxe4 20. Rxf7 Kxf7 21. Bxe4
dxe4 22. Nxe4 Ndf6 23. Qd3 Bf5 24. Rf1 Kg6 25. Nbd2 Nxe4 26. Rxf5 Kxf5 27.
Qxe4+ Kf6 28. Nf3 Qg6 29. Qe5+ Kf7 30. Nxg5+ Kg8 31. Ne4 Rd8 32. Qe7 Rd5 33. g4
Qf7 34. Qh4 Qf3 35. g5 Qxe3+ 36. Kg2 Rxd4 37. g6 Qxe4+ 0-1

[Event "PK LeiSB 2023 groep A"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Serdijn, Adinda"]
[Black "Andringa, Arjo"]
[Result "1/2-1/2"]
[WhiteElo "1957"]
[BlackElo "2014"]
[PlyCount "101"]
[EventDate "2023.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. Nxe5 Nxe5 8.
d4 Bxd4 9. Qxd4 d6 10. c3 c5 11. Qe3 O-O 12. h3 Re8 13. Nd2 c4 14. Bc2 d5 15.
exd5 Qxd5 16. Qd4 Bb7 17. Qxd5 Bxd5 18. a4 Ned7 19. axb5 axb5 20. Rxa8 Rxa8 21.
Re1 Nc5 22. Nf1 Ra1 23. Ne3 Be4 24. Bxe4 Nfxe4 25. Nd5 Nd6 26. Bd2 Rxe1+ 27.
Bxe1 Nd3 28. Bd2 f6 29. Kf1 Kf7 30. Ke2 g5 31. b3 Ke6 32. bxc4 bxc4 33. Nb6 Nc5
34. f4 Nce4 35. fxg5 fxg5 36. Ke3 Ke5 37. Bc1 Nf5+ 38. Kf3 Nfd6 39. Ba3 h5 40.
g4 h4 41. Ke3 Nxc3 42. Bxd6+ Kxd6 43. Nxc4+ Kd5 44. Nd2 Ke5 45. Nf3+ Kf6 46.
Kd4 Ne2+ 47. Ke4 Nf4 48. Nxh4 Nxh3 49. Nf3 Nf2+ 50. Kd5 Nxg4 51. Nxg5 1/2-1/2

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "De Witte, Sjoerd"]
[Black "De Leede, Tjeerd"]
[Result "1/2-1/2"]
[WhiteElo "1648"]
[BlackElo "1704"]
[PlyCount "90"]
[EventDate "2023.??.??"]

1. d4 e6 2. c4 f5 3. a3 Nf6 4. Nc3 Be7 5. Nf3 d6 6. Qc2 O-O 7. e4 Nxe4 8. Nxe4
fxe4 9. Qxe4 d5 10. Qc2 Qe8 11. Bd3 g6 12. Bh6 Rf6 13. O-O-O dxc4 14. Bxc4 b5
15. Bd3 Bb7 16. Qe2 Bd5 17. Bxb5 c6 18. Bc4 Qd7 19. Ne5 Qd6 20. f3 Nd7 21. Nxd7
Qxd7 22. Bxd5 cxd5 23. Qe5 Rc8+ 24. Kb1 Qb5 25. Rd2 Kf7 26. Qe2 Qb6 27. Bg5 Rf5
28. Bxe7 Kxe7 29. Rc1 Rb8 30. Qe3 a5 31. Rdc2 Rb7 32. Qc3 Rf4 33. Rd2 Kf7 34.
g3 Rf5 35. f4 Kg7 36. Qc6 Rff7 37. Qxb6 Rxb6 38. Rdc2 h5 39. Rc6 Rfb7 40. Rxb6
Rxb6 41. Rc5 Ra6 42. b3 Kf6 43. Kc2 Kf5 44. Kd3 Rb6 45. Rc3 Kg4 1/2-1/2

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Shankar, Aravindh Swaminat"]
[Result "1-0"]
[WhiteElo "1776"]
[BlackElo "1729"]
[PlyCount "55"]
[EventDate "2023.??.??"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 O-O 5. Nge2 Re8 6. O-O Nc6 7. d3 h6 8. h3
d6 9. Kh2 a6 10. f4 Nd4 11. f5 c6 12. g4 d5 13. g5 hxg5 14. Bxg5 Ng4+ 15. hxg4
Qxg5 16. Kg3 g6 17. Qc1 Nxe2+ 18. Nxe2 Be3 19. Qe1 gxf5 20. exf5 Kg7 21. Qc3 d4
22. Qc5 Qf6 23. Rh1 Bxf5 24. Raf1 Bf4+ 25. Nxf4 exf4+ 26. Rxf4 Re3+ 27. Bf3 Qg5
28. Qxf5 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van Veen, Kylian"]
[Black "Kohlbeck, Ton"]
[Result "0-1"]
[WhiteElo "1735"]
[BlackElo "1831"]
[PlyCount "56"]
[EventDate "2023.??.??"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bd2 Qc7 6. Bd3 Nf6 7. h3 b6 8. Nf3
e6 9. O-O Bd6 10. Ne4 Nxe4 11. Bxe4 O-O 12. c3 Nd7 13. Re1 Nf6 14. Bc2 c5 15.
Ne5 cxd4 16. cxd4 Bb7 17. Rc1 Qe7 18. Bg5 h6 19. Bxf6 Qxf6 20. Ng4 Qg5 21. Qd3
g6 22. g3 Rac8 23. f4 Qe7 24. f5 Qg5 25. fxg6 f5 26. Ne5 Be4 27. Qb3 Rfe8 28.
h4 Qd2 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Brienen, Jacob"]
[Black "Van der Ven, Joao"]
[Result "1-0"]
[WhiteElo "1498"]
[BlackElo "1649"]
[Annotator "van,Jan"]
[PlyCount "74"]
[EventDate "2023.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 Bb6 6. Bg5 h6 7. Bh4 d6 8. h3 a6
9. Nbd2 Qe7 10. b4 g5 11. Bg3 g4 12. hxg4 Bxg4 13. a4 Nh5 14. Bh4 Qf8 15. a5
Ba7 16. Bd5 Nf4 17. Kf1 Qg7 18. Bg3 Nxd3 19. b5 axb5 20. a6 Bc8 21. Qb1 Nc5 22.
Qxb5 Kd7 23. Nc4 Bb6 24. Nxb6+ cxb6 25. Qxb6 Rxa6 26. Bxc6+ bxc6 27. Nxe5+ Qxe5
28. Bxe5 Rxb6 29. Bxh8 Nxe4 30. Rxh6 Rb2 31. f3 Ng3+ 32. Kg1 Ke7 33. Ra7+ Bb7
34. Rf6 Rb6 35. Ra1 Ne2+ 36. Kh2 Rb5 37. g4 Nxc3 {rest notatie onduidelijk.}
1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Brouwer, Tim"]
[Black "Molenkamp, Jan Bertus"]
[Result "0-1"]
[WhiteElo "1631"]
[BlackElo "1785"]
[PlyCount "70"]
[EventDate "2023.??.??"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Ne7 6. O-O Bf5 7. Bxf5 Nxf5 8.
Qd3 Ne7 9. Qb5+ Nbc6 10. Qxb7 O-O 11. c3 Qd7 12. Qb3 Qf5 13. Qd1 Ng6 14. b3
Rfe8 15. Ba3 Bxa3 16. Nxa3 Nf4 17. Kh1 Re6 18. Nc2 Qg4 19. Nfe1 Re2 20. Ne3 Qh5
21. g3 Nh3 22. g4 Rxe1 23. gxh5 Nxf2+ 24. Kg2 Rxd1 25. Nxd1 Ne4 26. Ne3 Ne7 27.
c4 dxc4 28. bxc4 Rb8 29. Rab1 Rd8 30. Rb7 Nc6 31. d5 Ne5 32. Rxc7 f6 33. Rxa7
Rb8 34. Rc1 Nd3 35. Kh1 Nxc1 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van Vleuten, Ronald"]
[Black "Teianu, Maxim"]
[Result "0-1"]
[WhiteElo "1590"]
[BlackElo "1488"]
[PlyCount "53"]
[EventDate "2023.??.??"]

1. Nf3 e6 2. b3 d5 3. Bb2 Nf6 4. e3 c5 5. d4 Nc6 6. Bd3 Bd6 7. O-O O-O 8. Ne5
Qc7 9. Nxc6 bxc6 10. dxc5 Bxh2+ 11. Kh1 Be5 12. Bc3 Bxc3 13. Nxc3 e5 14. Be2
Qe7 15. Na4 Ne4 16. b4 Qh4+ 17. Kg1 Re8 18. Bf3 Ng5 19. g3 Nxf3+ 20. Qxf3 Qxb4
21. c4 Qxa4 22. cxd5 cxd5 23. Qxd5 Be6 24. Qg2 Rad8 25. f3 Rd3 26. Qe2 Red8 27.
Rfd1 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Verschoor, Marcel"]
[Black "De Witte, Job"]
[Result "1-0"]
[WhiteElo "1646"]
[BlackElo "1507"]
[PlyCount "59"]
[EventDate "2023.??.??"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. h3 Nf6 5. Nc3 a6 6. a4 Nbd7 7. Bc4 b6 8. e5 Ng8
9. e6 fxe6 10. Bxe6 Ndf6 11. d5 Bxe6 12. dxe6 Qc8 13. Qe2 Qb7 14. O-O O-O-O 15.
Ra3 h6 16. Bd2 g5 17. b4 g4 18. hxg4 Nxg4 19. Nh4 Ne5 20. f4 Bf6 21. fxe5 Bxh4
22. exd6 exd6 23. Qg4 Be7 24. Rf2 h5 25. Qg7 Bf6 26. Rxf6 Nxf6 27. Qxf6 Rhg8
28. Qf2 Rg4 29. Ne2 h4 30. e7 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Schenkelaars, Robin"]
[Black "Wagemans, Ed"]
[Result "0-1"]
[WhiteElo "1750"]
[BlackElo "1784"]
[PlyCount "51"]
[EventDate "2023.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 h6 7. Bh4 g5 8. Bg3
Bg7 9. f3 O-O 10. Qd2 Nc6 11. Nxc6 bxc6 12. O-O-O Rb8 13. e5 Nh5 14. Na4 Nxg3
15. hxg3 Bxe5 16. Rxh6 Bf6 17. Qd3 Re8 18. Qh7+ Kf8 19. Bd3 Qa5 20. b3 Qe5 21.
Rdh1 Bd7 22. Bc4 d5 23. Bxa6 c5 24. Bd3 Bxa4 25. Rxf6 exf6 26. bxa4 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van de Poel, Jona"]
[Black "Eveleens, Ed"]
[Result "1-0"]
[WhiteElo "1717"]
[BlackElo "1697"]
[Annotator "van,Jan"]
[PlyCount "55"]
[EventDate "2023.??.??"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. Nf3 Bf5 6. Bd3 Bxd3 7. Qxd3 dxe5 8.
Nxe5 N8d7 9. Bf4 Nxe5 10. Bxe5 Nd7 11. Bg3 e6 12. Nc3 Bb4 13. O-O Bxc3 14. Qxc3
O-O 15. Rad1 c6 16. Qb3 Qb6 17. Qc2 Rac8 18. Rfe1 Rfe8 19. b3 a5 20. Re3 Qa6
21. Bd6 b5 22. c5 Qb7 23. a3 Nf8 24. h4 Ng6 25. Rh3 Ne7 26. g4 Nd5 27. h5 Qd7
28. Rg3 {rest notatie onduidelijk.} 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Hoogeveen, Luuk"]
[Black "Rudman, Lev"]
[Result "1-0"]
[WhiteElo "1643"]
[BlackElo "1224"]
[PlyCount "128"]
[EventDate "2023.??.??"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e6 5. d3 Nf6 6. Nbd2 Bd6 7. e4 dxe4 8.
dxe4 O-O 9. Qe2 e5 10. c3 b6 11. Rd1 Bc7 12. Nc4 Qe7 13. Bg5 h6 14. Bxf6 Qxf6
15. Ne3 Be6 16. Nd5 Bxd5 17. exd5 Ne7 18. Rd2 Rad8 19. Rad1 Nf5 20. b3 Bd6 21.
Qe4 Rfe8 22. Bh3 Ne7 23. Re2 Ng6 24. Nd2 Qg5 25. Qg4 Qf6 26. Ne4 Qe7 27. Qf3
Rf8 28. Bf5 Qe8 29. Nxd6 Rxd6 30. Qe4 Qd8 31. Bxg6 Rxg6 32. Qxe5 Qc8 33. d6 Re6
34. Qh5 Rd8 35. Rxe6 Qxe6 36. Qd5 Qxd5 37. Rxd5 Kf8 38. Kg2 Ke8 39. Kf3 Kd7 40.
Ke4 Ke6 41. Re5+ Kxd6 42. Rd5+ Ke7 43. Rxd8 Kxd8 44. f4 Ke8 45. g4 Kd8 46. h4
Ke8 47. f5 Kd8 48. Ke5 Ke7 49. g5 hxg5 50. hxg5 f6+ 51. gxf6+ gxf6+ 52. Kd5 Kf7
53. Kd6 Kf8 54. c4 Kf7 55. a4 Kf8 56. Kc7 Kg7 57. Kb7 Kh6 58. Kxa7 Kg5 59. Kxb6
Kxf5 60. a5 Kg4 61. a6 f5 62. a7 Kf3 63. a8=Q+ Ke3 64. Kxc5 f4 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Vergeer, Michiel"]
[Black "Westveer, Paul"]
[Result "1-0"]
[WhiteElo "1688"]
[BlackElo "1345"]
[PlyCount "122"]
[EventDate "2023.??.??"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nf3 Nf6 5. Nc3 O-O 6. Be2 Nbd7 7. h3 e5 8. Be3
h6 9. Qd2 Kh7 10. O-O-O Re8 11. dxe5 dxe5 12. g4 Re6 13. g5 Rd6 14. Bd3 hxg5
15. Nxg5+ Kg8 16. c5 Rd4 17. Bxd4 exd4 18. Na4 Bh6 19. f4 b6 20. Bc4 Bxg5 21.
fxg5 Nxe4 22. Qxd4 Qxg5+ 23. Kc2 Ndxc5 24. Qd8+ Qxd8 25. Rxd8+ Kg7 26. Nxc5
Nxc5 27. Kc1 Bb7 28. Rxa8 Bxa8 29. Re1 Be4 30. b4 Nd3+ 31. Bxd3 Bxd3 32. Re7 c6
33. Rxa7 b5 34. a4 bxa4 35. Rxa4 f5 36. Kd2 Bb5 37. Ra3 Kf6 38. Ke3 Ke5 39. Rc3
Kf6 40. h4 Ba4 41. Kf4 Bb5 42. Rc5 Ba4 43. Rc3 Bb5 44. Rg3 Ba6 45. Rg1 Bc8 46.
Rd1 Ke7 47. Ke5 Bd7 48. Rd6 Be8 49. Re6+ Kf7 50. Kd6 Kf8 51. Rf6+ Bf7 52. Kxc6
Kg7 53. Rd6 Bc4 54. b5 Bxb5+ 55. Kxb5 Kh6 56. Kc4 Kh5 57. Kd3 g5 58. hxg5 Kxg5
59. Ke3 f4+ 60. Kf3 Kf5 61. Rd5+ Ke6 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "De Ruyter, Wim"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[WhiteElo "1595"]
[BlackElo "1738"]
[PlyCount "66"]
[EventDate "2023.??.??"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 Bxe2 5. Nxe2 Nxd5 6. O-O e6 7. c4 Nb6 8.
Be3 Be7 9. Nd2 O-O 10. Ng3 N8d7 11. Rc1 c5 12. Nde4 Qc7 13. d5 exd5 14. cxd5
Qe5 15. d6 Bf6 16. Qg4 c4 17. Bh6 Kh8 18. Be3 Qe6 19. Qxe6 fxe6 20. Nxf6 gxf6
21. Rfe1 Ne5 22. Rc2 Rad8 23. Ne4 Nd3 24. Rd1 f5 25. Ng5 Rf6 26. Rxd3 cxd3 27.
Rc7 Rxd6 28. Bd2 Kg8 29. Kf1 Rc6 30. Rxh7 Rc2 31. Ke1 e5 32. Bc3 Nc4 33. Nf3
Rc1# 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Varela, César"]
[Black "Koelmans, Jan Willem"]
[Result "1-0"]
[BlackElo "1810"]
[PlyCount "49"]
[EventDate "2023.??.??"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Bd6 6. Bd3 Nbd7 7. O-O dxc4 8.
Bxc4 b5 9. Bd3 b4 10. Ne4 Nxe4 11. Bxe4 Qb6 12. b3 Bb7 13. Bb2 Nf6 14. Bd3 c5
15. dxc5 Bxc5 16. Rc1 Rd8 17. Qe2 a6 18. Rfd1 Be7 19. Ne5 O-O 20. Bd4 Rxd4 21.
exd4 Nd5 22. Nd7 Qd6 23. Nxf8 Bxf8 24. Qe4 g6 25. Bc4 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Groenendijk, Patrick"]
[Black "Beentjes, Douwe"]
[Result "1-0"]
[WhiteElo "1694"]
[PlyCount "73"]
[EventDate "2023.??.??"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8.
Qc2 O-O 9. Nge2 Re8 10. O-O Nf8 11. f3 Ng6 12. Rad1 Be6 13. Ng3 Rc8 14. f4 Ng4
15. Bxe7 Qxe7 16. Rfe1 Qh4 17. Nf1 Nf8 18. h3 Nf6 19. Qf2 Qxf2+ 20. Kxf2 c5 21.
dxc5 Rxc5 22. Ne2 Ne4+ 23. Bxe4 dxe4 24. Nc3 f5 25. Rd4 Nd7 26. Red1 Nf6 27.
Ng3 a5 28. Nge2 b5 29. a3 Bb3 30. R1d2 Rb8 31. Rd8+ Rxd8 32. Rxd8+ Kf7 33. Nd4
b4 34. axb4 axb4 35. Nxb3 bxc3 36. Nxc5 cxb2 37. Rb8 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Hooshangi, Milan"]
[Black "Rozendaal, Henk"]
[Result "0-1"]
[WhiteElo "1605"]
[BlackElo "1738"]
[PlyCount "82"]
[EventDate "2023.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. Nf3 d5 6. Bd2 b6 7. e3 Ba6 8. Nb5
Bxd2+ 9. Nxd2 c6 10. Nc3 c5 11. dxc5 bxc5 12. Rd1 Qe7 13. Be2 Nc6 14. cxd5 Bxe2
15. Nxe2 exd5 16. O-O Nb4 17. Qb3 d4 18. Nc4 a5 19. Qa4 Qe6 20. Rc1 Nfd5 21. a3
d3 22. Nf4 Nxf4 23. exf4 Nd5 24. Ne5 Rfc8 25. Nxd3 Qf5 26. Rfd1 Nb6 27. Qb5 Nd7
28. Rd2 Rab8 29. Qxa5 Ra8 30. Qc3 c4 31. Ne5 Nc5 32. Qf3 Nb3 33. Rcd1 Nxd2 34.
Rxd2 Qb1+ 35. Rd1 Qxb2 36. Nxc4 Qc2 37. Nb6 Rab8 38. Qd5 Re8 39. Nc4 Rb1 40.
Ne3 Rxd1+ 41. Qxd1 Qxd1+ 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Vlieland, Theo"]
[Black "Been, Klaas"]
[Result "1-0"]
[WhiteElo "1396"]
[BlackElo "1543"]
[Annotator "van,Jan"]
[PlyCount "131"]
[EventDate "2023.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 c6 6. Bc4 Be7 7. O-O O-O 8. a4
Qc7 9. Bf4 Nbd7 10. Nf5 Ne5 11. Bxe5 dxe5 12. Nxe7+ Qxe7 13. Qe2 Qc5 14. h3 Re8
15. Rfd1 Be6 16. Bxe6 Rxe6 17. Rd2 g6 18. Qd3 Qb6 19. b3 Nh5 20. Ne2 Rf6 21.
Qe3 Qxe3 22. fxe3 Re6 23. Rad1 Nf6 24. Nc3 Ree8 25. Rd6 Kg7 26. Kf2 Re7 27. Kf3
Rc8 28. a5 Rcc7 29. Na4 Red7 30. Nc5 Rxd6 31. Rxd6 Ne8 32. Rd8 Kf8 33. Rb8 b6
34. axb6 axb6 35. Rxb6 Nd6 36. Kg4 h6 37. Kf3 Kg7 38. g4 Kf6 39. h4 Ke7 40. g5
h5 41. Ke2 Nb5 42. Na6 Rc8 43. Nb4 Kd6 44. Kd3 Kc5 45. Rxb5+ Kxb5 46. Kc3 Rd8
47. Nd3 Re8 48. b4 Re7 49. Kb3 Kb6 50. c4 Re6 51. Kc3 f5 52. gxf6 Rxf6 53. Nxe5
Kc7 54. b5 cxb5 55. cxb5 Re6 56. Kd4 g5 57. Kd5 Re8 58. hxg5 h4 59. g6 h3 60.
Nf3 Rg8 61. e5 Rxg6 62. e6 Rg3 63. e7 Kd7 64. b6 Rxf3 65. b7 Kxe7 66. b8=Q {
rest notatie onduidelijk} 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Uittenbogaard, Rob"]
[Black "Van Amsterdam, Jan"]
[Result "0-1"]
[WhiteElo "1477"]
[BlackElo "1708"]
[PlyCount "46"]
[EventDate "2023.??.??"]

1. Nf3 e6 2. c4 d5 3. d4 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. Qc2
e5 9. dxe5 Nxe5 10. Nxe5 Bxe5 11. f4 Bc7 12. cxd5 cxd5 13. Rd1 Bb6 14. Bf3 Qc7
15. Kh1 Rd8 16. Qe2 Be6 17. Bd2 d4 18. exd4 Bxd4 19. Rac1 Bc4 20. Nb5 Bxe2 21.
Nxc7 Bxd1 22. Nxa8 Bxf3 23. gxf3 Rxa8 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van den Berg, Dick"]
[Black "Tavridis, Efstathios"]
[Result "1-0"]
[WhiteElo "1697"]
[BlackElo "1558"]
[Annotator "van,Jan"]
[PlyCount "98"]
[EventDate "2023.??.??"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Nc6 6. Qb3 Qe7 7. O-O h6 8.
Bd5 Nf6 9. Bxc6+ bxc6 10. Nxd4 Qxe4 11. Be3 Qd5 12. Nc3 Qxb3 13. axb3 Bd7 14.
Ra6 c5 15. Ndb5 Bd6 16. Nxd6+ cxd6 17. Rxd6 O-O 18. Bxc5 Rfc8 19. b4 a5 20. Ra1
axb4 21. Rxa8 Rxa8 22. Bxb4 Ra1+ 23. Rd1 Rxd1+ 24. Nxd1 Ba4 25. Nc3 Bb3 26. f3
Nd5 27. Nxd5 Bxd5 28. Kf2 f5 29. Ke3 Kf7 30. Kd4 Bb3 31. Ke5 g6 32. Bd2 h5 33.
Bh6 Ke7 34. Bg5+ Kf7 35. Kd6 Ke8 36. Ke5 Kf7 37. Bh6 Ke7 38. Kf4 Kf6 39. Bg5+
Kg7 40. Bd8 Kh6 41. Bf6 Bc4 42. b4 Bf1 43. g3 Bb5 44. Ke5 Kh7 45. f4 Kg8 46.
Ke6 Kf8 47. Be5 Kg8 48. Kf6 Kh7 49. Ke6 Kg8 {rest notatie onduidelijk.} 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Van der Kolk, Constantijn"]
[Black "Branco, Moritz"]
[Result "0-1"]
[BlackElo "1429"]
[PlyCount "66"]
[EventDate "2023.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8.
Be3 Nc6 9. Bb5 Bd7 10. Qd2 cxd4 11. cxd4 O-O 12. O-O a6 13. Ba4 b5 14. Bb3 Na5
15. Bh6 Nxb3 16. axb3 a5 17. Bxg7 Kxg7 18. Ne5 a4 19. b4 Be8 20. h4 f6 21. Ng4
Kh8 22. f4 Qb6 23. f5 Rc8 24. Rfd1 Bf7 25. Kh1 Bb3 26. fxg6 Rg8 27. h5 Bxd1 28.
Nh6 Bb3 29. Nxg8 Rxg8 30. Qh6 Rg7 31. e5 Qxd4 32. exf6 exf6 33. Re1 Qh4+ 0-1

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Schenkelaars, Vincent"]
[Black "Scheele, Peter"]
[Result "1-0"]
[WhiteElo "1750"]
[BlackElo "1171"]
[Annotator "van,Jan"]
[PlyCount "111"]
[EventDate "2023.??.??"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 c6 7. Rc1 O-O 8. Bd3
Re8 9. O-O c5 10. cxd5 exd5 11. h3 c4 12. Bb1 a6 13. a4 Rb8 14. Bf4 Ra8 15. b3
cxb3 16. Qxb3 Qb6 17. Qa2 Qa5 18. Bd3 b5 19. Rc2 b4 20. Ne2 Nb6 21. Ra1 Bd7 22.
Rc7 Rec8 23. Bc2 Ne8 24. Rxc8 Rxc8 25. Ne5 Bd6 26. Nxd7 Nxd7 27. Bb3 Nb6 28.
Bxd6 Nxd6 29. Nf4 Nbc4 30. Nd3 Ne4 31. Rc1 Nc3 32. Qa1 Ne2+ 33. Kf1 Nxc1 34.
Qxc1 Qb6 35. Nc5 a5 36. Qc2 Nd6 37. Bxd5 g6 38. e4 Rd8 39. Qb3 Qc7 40. Qf3 Nb7
41. Nd3 Nd6 42. g4 Qc3 43. e5 Qxd4 44. exd6 Rd7 45. Qe4 Qxe4 46. Bxe4 Rxd6 47.
Ke2 b3 48. Nb2 Rd4 49. Ke3 Rd6 50. f3 Kg7 51. Bd3 f6 52. Kd2 h5 53. Kc3 hxg4
54. hxg4 Kh6 55. Kxb3 Rd4 56. Kc3 {Notatie onduidelijk.} 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Moeri, Erick"]
[Black "Bingen, Stanley"]
[Result "1-0"]
[WhiteElo "1522"]
[BlackElo "1274"]
[Annotator "van,Jan"]
[PlyCount "65"]
[EventDate "2023.??.??"]

1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Bd3 Nc6 5. Nf3 Bd7 6. Nbd2 Bd6 7. Bg3 Bxg3 8.
hxg3 Qe7 9. c4 O-O-O 10. c5 e5 11. Bb5 exd4 12. Bxc6 Bxc6 13. Nxd4 Qxc5 14. O-O
Bd7 15. Rc1 Qd6 16. Qc2 c6 17. Nb5 Qb8 18. b4 h5 19. Qc3 b6 20. Qd4 Kb7 21. Nc3
h4 22. gxh4 Rde8 23. Nf3 Bg4 24. Ne2 Bxf3 25. gxf3 Qc8 26. Kg2 Rh6 27. Rh1 Reh8
28. Ng3 Rg6 29. Kf1 Ka8 30. Qc3 Ne8 31. a4 Qa6+ 32. b5 cxb5 33. axb5 {rest
notatie onduidelijk.} 1-0

[Event "PK LeiSB 2023 groep B"]
[Site "Leiden, Netherlands"]
[Date "2023.06.26"]
[Round "6"]
[White "Cools, Frank"]
[Black "Pasteels, Luc"]
[Result "1-0"]
[WhiteElo "1440"]
[BlackElo "1401"]
[PlyCount "59"]
[EventDate "2023.??.??"]

1. d4 e6 2. Bf4 d5 3. e3 Nf6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 cxd4 7. exd4 Bd6 8.
Bg3 O-O 9. Qc2 Qc7 10. Bd3 h6 11. Bxd6 Qxd6 12. O-O Bd7 13. Rfe1 Rac8 14. Qd1
Rfe8 15. Ne5 Qc7 16. f4 Nxe5 17. fxe5 Nh7 18. Rf1 b5 19. Bxh7+ Kxh7 20. Rxf7
Rf8 21. Qc2+ Kg8 22. Rxf8+ Rxf8 23. a3 a5 24. Rf1 Rc8 25. Nb3 b4 26. Nc5 bxa3
27. bxa3 Qa7 28. Qg6 Rxc5 29. Rf7 Be8 30. Qxg7# 1-0



