[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.11.05"]
[Round "11"]
[White "Mohr, Georg"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B88"]
[WhiteElo "2430"]
[BlackElo "2096"]
[PlyCount "58"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. a3 Nc6 8. 0-0 Be7 9. Kh1 Bd7 10. f4 0-0 11. f5 Nxd4 12. Qxd4 Qc7 13. Bg5 Rac8 14. Bb3 Qc5 15. Qd3 Rfe8 16. Be3 Qa5 17. fxe6 Bxe6 18. Rad1 Qh5 19. Bf4 Red8 20. Nd5 Nxd5 21. exd5 Bg4 22. Rde1 Bh4 23. Re3 Re8 24. Qd2 Be2 25. Rb1 Bf2 26. Rxe8+ Rxe8 27. Bxd6 Re3 28. Qb4 Bd1 29. h4 Bxh4 0-1

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.11.04"]
[Round "10"]
[White "Nikolaidis, Konstantinos"]
[Black "Koganov, Mikhail"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2096"]
[BlackElo "2170"]
[PlyCount "100"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. g3 0-0 6. Bg2 Nbd7 7. 0-0 e5 8. e4 exd4 9. Nxd4 Nc5 10. Re1 Re8 11. Qc2 Nfxe4 12. Nxe4 Bxd4 13. Bg5 Qd7 14. Nf6+ Bxf6 15. Bxf6 Rf8 16. Re7 Qf5 17. Qxf5 Bxf5 18. Rxc7 Rac8 19. Rxc8 Rxc8 20. Be7 Be4 21. f3 Bc6 22. Bxd6 Nd3 23. b3 Re8 24. Kf1 Rd8 25. Be7 Rd7 26. Rd1 Rxe7 27. Rxd3 f5 28. Rd2 Kf7 29. f4 Bxg2+ 30. Kxg2 Kf6 31. Kf2 a6 32. h3 h6 33. Rd6+ Kg7 34. c5 g5 35. Rb6 gxf4 36. gxf4 Rc7 37. b4 Rd7 38. Ke3 h5 39. h4 Re7+ 40. Kd3 Kf7 41. a3 Kg7 42. a4 Kf7 43. b5 axb5 44. axb5 Re4 45. Rxb7+ Ke6 46. c6 Rxf4 47. c7 Kd7 48. b6 Rf3+ 49. Ke2 Rc3 50. Rb8 Kd6 1-0

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.11.03"]
[Round "9"]
[White "Milat, Marcel Victor"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E17"]
[WhiteElo "2207"]
[BlackElo "2096"]
[PlyCount "82"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 b6 7. Bb2 Bb7 8. d4 Nbd7 9. cxd5 Nxd5 10. Nbd2 c5 11. Nc4 Rc8 12. e4 N5f6 13. e5 Nd5 14. h4 b5 15. Nd6 Bxd6 16. exd6 c4 17. bxc4 bxc4 18. Qa4 a6 19. Rab1 N7b6 20. Qa5 c3 21. Ba3 c2 22. Rb3 Nc4 23. Qxd8 Rfxd8 24. Bc5 Bc6 25. Rc1 Ba4 26. Bf1 Bxb3 27. axb3 Nxd6 28. Bxa6 Rb8 29. Rxc2 Rxb3 30. Ne5 Nb4 31. Bxb4 Rxb4 32. Nc6 Rb1+ 33. Kg2 Ra8 34. Be2 Kf8 35. Bf3 Rc8 36. Ra2 Rc1 37. Ne5 R1c2 38. Ra6 Nc4 39. Be4 Rd2 40. Bb7 Rc7 41. Ra8+ Ke7 0-1

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.11.02"]
[Round "8"]
[White "Nikolaidis, Konstantinos"]
[Black "Maier, Christian"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2096"]
[BlackElo "2278"]
[PlyCount "12"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 1/2-1/2

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.11.01"]
[Round "7"]
[White "Prasad, Devaki V"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2200"]
[BlackElo "2096"]
[PlyCount "65"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 b5 8. Bg2 Bb7 9. 0-0 Qc7 10. Re1 Be7 11. Nd5 Nxd5 12. exd5 e5 13. Nf5 0-0 14. a4 g6 15. Nxe7+ Qxe7 16. axb5 axb5 17. Rxa8 Bxa8 18. Qd3 Qb7 19. Bd2 Na6 20. b4 Rc8 21. c3 Nb8 22. Ra1 Nd7 23. Ra5 Rb8 24. g5 f5 25. gxf6 Nxf6 26. Bg5 Nh5 27. Qe3 Qc7 28. Qa7 Qxa7 29. Rxa7 Ng7 30. f4 exf4 31. Bxf4 Nf5 32. Be4 Re8 33. Bxf5 1/2-1/2

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.10.30"]
[Round "6"]
[White "Nikolaidis, Konstantinos"]
[Black "Mantovani, Renzo"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2096"]
[BlackElo "2236"]
[PlyCount "128"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. 0-0 e6 6. Nc3 Be7 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. b3 Nbd7 11. Ba3 Nc5 12. Qe3 Qc7 13. Nd4 Bxg2 14. Kxg2 0-0 15. Rac1 Rfe8 16. Qf3 Rac8 17. g4 h6 18. h4 Nh7 19. Rh1 Bf6 20. Rcd1 g6 21. g5 hxg5 22. hxg5 Bxg5 23. b4 Nb7 24. Ne4 f5 25. Nxg5 Nxg5 26. Qg3 Ne4 27. Qxg6+ Qg7 28. Qxg7+ Kxg7 29. Bb2 Nf6 30. Rc1 Kf7 31. Rh6 Rh8 32. Nxf5 Rxh6 33. Nxh6+ Kg6 34. Bxf6 Kxf6 35. Ng4+ Kg6 36. Ne3 d5 37. Kf3 Rf8+ 38. Kg2 Rc8 39. Kf3 Rf8+ 40. Kg2 Rc8 41. Rc2 d4 42. Nf1 a5 43. a3 axb4 44. axb4 Kf5 45. f3 Ke5 46. Kf2 Ra8 47. Nd2 Ra4 48. Rb2 Ra1 49. e3 dxe3+ 50. Kxe3 Re1+ 51. Kd3 Kd6 52. Ra2 Kc6 53. Ra6 Kc7 54. Ra7 Kb8 55. Ra6 Kc7 56. Ra8 Nd6 57. Rh8 Nf5 58. Rh7+ Kd6 59. Rb7 Re3+ 60. Kc2 Nd4+ 61. Kb2 Kc6 62. Re7 Kd6 63. Rb7 Kc6 64. Re7 Kd6 1/2-1/2

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.10.29"]
[Round "5"]
[White "Cummings, David H"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2325"]
[BlackElo "2096"]
[PlyCount "81"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Be7 5. b3 0-0 6. Bb2 c5 7. cxd5 exd5 8. d4 b6 9. Rc1 Bb7 10. Be2 Nbd7 11. 0-0 Bd6 12. Nb5 Bb8 13. Ne5 a6 14. Nxd7 Qxd7 15. Nc3 Qd6 16. g3 Bc6 17. Bf3 Rd8 18. Ba3 Ba7 19. Ne2 Bb5 20. Re1 Rac8 21. Nf4 Qd7 22. Bg2 Rc7 23. Bh3 Qe8 24. dxc5 bxc5 25. Bb2 Ne4 26. Nxd5 Rc6 27. Bg2 f5 28. f3 Ng5 29. e4 Rcd6 30. h4 Ne6 31. Qc2 Bd3 32. Qd2 Qf7 33. Kh2 Bb5 34. Rcd1 Bc6 35. Qc2 f4 36. g4 Nd4 37. Bxd4 cxd4 38. Nb4 Bb5 39. Nd3 Rh6 40. Qf2 Qe7 41. e5 1/2-1/2

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.10.28"]
[Round "4"]
[White "Nikolaidis, Konstantinos"]
[Black "Plotkin, Victor"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2096"]
[BlackElo "2229"]
[PlyCount "67"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 e5 5. Bg2 Be7 6. 0-0 0-0 7. d3 d6 8. a3 h6 9. Rb1 a5 10. Ne1 Be6 11. Nd5 Rb8 12. Bd2 Re8 13. Nc2 Nd4 14. b4 axb4 15. axb4 Nxd5 16. cxd5 Bg4 17. Re1 Nxc2 18. Qxc2 b6 19. h3 Bd7 20. Ra1 Ra8 21. Qb2 Qc7 22. Rec1 Reb8 23. Rcb1 Qc8 24. Kh2 Rxa1 25. Rxa1 Ra8 26. Ra3 Rxa3 27. Qxa3 Qb7 28. Bc3 Bd8 29. Qa1 Bc8 30. Qa4 Bd7 31. Qa1 Bc8 32. Qa4 Bd7 33. Qa1 f6 34. f4 1/2-1/2

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.10.27"]
[Round "3"]
[White "Lima, Darcy Gustavo Macha"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2416"]
[BlackElo "2096"]
[PlyCount "59"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. d4 d6 6. h3 Nc6 7. Nf3 a6 8. e4 Rb8 9. 0-0 b5 10. d5 Na5 11. cxb5 axb5 12. b4 Nc4 13. Nd4 Bd7 14. Re1 e5 15. Nc6 Bxc6 16. dxc6 Qe8 17. a4 Qxc6 18. Nxb5 Rfd8 19. Bg5 Qd7 20. Bf1 c6 21. Bxc4 cxb5 22. Bxb5 Qxh3 23. Bf1 Qe6 24. b5 d5 25. Qb3 Qg4 26. Bxf6 Bxf6 27. a5 dxe4 28. a6 e3 29. Qxe3 e4 30. Ra4 1-0

[Event "Wch Seniors 50 31st"]
[Site "Terassini"]
[Date "2023.10.25"]
[Round "1"]
[White "Degraeve, Jean Marc"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2479"]
[BlackElo "2096"]
[PlyCount "112"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 e6 5. Bb3 Be7 6. 0-0 0-0 7. c3 d5 8. e5 Nfd7 9. d4 Nc6 10. Re1 b5 11. Nbd2 a5 12. a4 Ba6 13. axb5 Bxb5 14. Nf1 Rb8 15. Bc2 Qb6 16. h4 cxd4 17. cxd4 Rfc8 18. Ne3 Rc7 19. Bd2 Nb4 20. Bb1 Rbc8 21. Bc3 Nf8 22. Qd2 Ra7 23. h5 Qd8 24. Ng4 Nd7 25. Nfh2 Bf8 26. Re3 Nb6 27. Rg3 Kh8 28. Nf6 gxf6 29. Bxb4 Nc4 30. Qc2 f5 31. Bc3 Nxe5 32. Qb3 Bc4 33. Qa4 Nc6 34. Nf3 Be2 35. Qc2 Bxf3 36. Rxf3 Nb4 37. Qe2 Qg5 38. Bd2 Qxh5 39. Qb5 Bd6 40. Bc3 Rg8 41. Kf1 Qh1+ 42. Ke2 Nc2 43. Qb6 Rd7 44. Bxc2 Qxa1 45. Qc6 Rdd8 46. Qb7 Qc1 47. Bd3 Rgf8 48. Rh3 Rb8 49. Qd7 Rxb2+ 50. Bxb2 Qxb2+ 51. Kf1 Qc1+ 52. Ke2 Bb4 53. Qb5 Qb2+ 54. Kf1 Qa1+ 55. Ke2 Qxd4 56. Rf3 Qb2+ 0-1

[Event "Athens Iraklion op 25th"]
[Site "Athens"]
[Date "2023.06.18"]
[Round "2"]
[White "Pothos, Aris"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1616"]
[BlackElo "2093"]
[PlyCount "118"]
[EventDate "2023.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nd2 Bd6 5. Bg3 0-0 6. Ngf3 c5 7. c3 Qc7 8. Ne5 Nc6 9. f4 Ne7 10. Bd3 Nf5 11. Bf2 Be7 12. Qf3 b6 13. g4 Nd6 14. g5 Nfe4 15. Rg1 Bb7 16. h4 a5 17. a4 f6 18. gxf6 Bxf6 19. Bxe4 dxe4 20. Qh3 Nf5 21. Nec4 Qc6 22. b3 Rfc8 23. Ra2 Rd8 24. Rc2 Ba6 25. Ra2 Bb7 26. Qg4 b5 27. axb5 Qxb5 28. Ra4 Bc6 29. Qd1 Nxh4 30. Bxh4 Bxh4+ 31. Kf1 Bd5 32. Qg4 Bf6 33. Ra2 Ra6 34. Kf2 Rda8 35. Rga1 a4 36. Rxa4 Rxa4 37. Rxa4 Rxa4 38. bxa4 Qxa4 39. Nd6 Qc2 40. Ke2 Qd3+ 41. Kd1 Bb3+ 42. Ke1 Qxe3+ 43. Qe2 Qg1+ 44. Nf1 cxd4 45. Nxe4 Bh4+ 46. Kd2 dxc3+ 47. Kxc3 Bd5 48. Qh5 Bf6+ 49. Nxf6+ gxf6 50. Qe8+ Kg7 51. Qe7+ Kg6 52. Qe8+ Kf5 53. Qh5+ Kxf4 54. Qh4+ Ke5 55. Nd2 Qe3+ 56. Kc2 Be4+ 57. Kc1 Qc3+ 58. Kd1 Bf3+ 59. Ke1 Qe3+ 0-1

[Event "Athens Iraklion op 25th"]
[Site "Athens"]
[Date "2023.06.17"]
[Round "1"]
[White "Nikolaidis, Konstantinos"]
[Black "Banas, Stylianos"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2093"]
[BlackElo "1203"]
[PlyCount "66"]
[EventDate "2023.06.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 h6 8. Bh4 Nbd7 9. Bd3 Qa5 10. Nge2 0-0 11. 0-0 Re8 12. a3 Qc7 13. Bg3 Qd8 14. Nb5 Rf8 15. Bc7 Qe8 16. Nd6 Bxd6 17. Bxd6 Qe6 18. Bxf8 Nxf8 19. Ng3 h5 20. Bf5 Qd6 21. Bxc8 Rxc8 22. Nxh5 g6 23. Nxf6+ Qxf6 24. Rac1 Nd7 25. Qa4 a6 26. Qb4 b6 27. Qa4 a5 28. Rc3 Kg7 29. Rfc1 Qh4 30. Rxc6 Nf6 31. Rxc8 Ng4 32. Qe8 Qxf2+ 33. Kh1 Qh4 1-0

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.12"]
[Round "10"]
[White "Nikolaidis, Konstantinos"]
[Black "Garifulin, Yury"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2133"]
[BlackElo "1975"]
[PlyCount "73"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Bd3 Nbd7 6. Nf3 Bd6 7. 0-0 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 h6 11. Bc2 Nf6 12. Qe2 c5 13. dxc5 Bxc5 14. Bf4 b6 15. Rad1 Qe7 16. Ne5 Bb7 17. Nd3 Bd4 18. Be5 Rfd8 19. Nf4 Qc5 20. Rxd4 Rxd4 21. Bxd4 Qxd4 22. g3 e5 23. Ng2 Qc5 24. Ne3 Rd8 25. Rd1 Rxd1+ 26. Qxd1 g6 27. Qd8+ Kg7 28. Bd1 Qb4 29. Kf1 Qxb2 30. Qc7 Ba6 31. Qxa7 Ne4 32. Be2 Nd2+ 33. Kg2 Bc8 34. Qc7 Ne4 35. Nd1 Qxe2 36. Qxe5+ Kh7 37. Qd4 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.11"]
[Round "9"]
[White "Modric, Milos"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2002"]
[BlackElo "2133"]
[PlyCount "34"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 5. d4 cxd4 6. exd6 e6 7. Qxd4 a6 8. c4 Nb4 9. Qc3 Qxd6 10. Be3 Qc7 11. a3 N4c6 12. Nbd2 Nd7 13. Be2 Nf6 14. h3 Be7 15. 0-0 0-0 16. Rfd1 h6 17. b4 Bd7 1/2-1/2

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.10"]
[Round "8"]
[White "Nikolaidis, Konstantinos"]
[Black "Nyysti, Sampsa"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2133"]
[BlackElo "2345"]
[PlyCount "80"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Nf6 7. a3 Qc7 8. Be2 b5 9. Nxc6 dxc6 10. f4 e5 11. 0-0 Bd6 12. f5 Qe7 13. Bg5 Bc5+ 14. Kh1 Bb7 15. Bf3 Bd4 16. Qe2 a5 17. Nd1 Ba6 18. Re1 h6 19. Bh4 g5 20. fxg6 fxg6 21. c3 b4 22. Qc2 bxc3 23. bxc3 Bc5 24. Be2 0-0 25. Nb2 Qe6 26. Bxa6 Rxa6 27. Qe2 Ra7 28. Qc4 Qxc4 29. Nxc4 Nd7 30. Rf1 a4 31. Rxf8+ Bxf8 32. Bg3 Rb7 33. Rd1 Rb3 34. Nxe5 Nxe5 35. Bxe5 Rxa3 36. h3 Kf7 37. Bd4 Ke6 38. Rb1 Rb3 39. Rf1 Be7 40. Ra1 a3 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.09"]
[Round "7"]
[White "Pirvulescu, Adrian"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1738"]
[BlackElo "2133"]
[PlyCount "76"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. h3 Be7 9. f4 exf4 10. Bxf4 Nc6 11. Qe2 Qc7 12. 0-0-0 0-0 13. Kb1 Rfe8 14. g4 Bf8 15. g5 Nd7 16. Qh2 Nde5 17. Nd5 Bxd5 18. exd5 Na5 19. h4 Nac4 20. Qg3 Rac8 21. Rh2 g6 22. c3 Bg7 23. Bc1 Ra8 24. h5 a5 25. hxg6 hxg6 26. Nd2 Nxd2+ 27. Rdxd2 Nc4 28. Bxc4 Qxc4 29. Rh4 Qc5 30. Rdh2 Qxd5 31. Qh3 Kf8 32. Qd7 Re1 33. Qa4 Rae8 34. Rh8+ Bxh8 35. Rxh8+ Kg7 36. Rxe8 Qf5+ 37. Re4 Rxe4 38. Qc2 Re2 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.08"]
[Round "6"]
[White "Nikolaidis, Konstantinos"]
[Black "Ciorgovean, Iustin"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2133"]
[BlackElo "2325"]
[PlyCount "68"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5. Qe2 a6 6. Ba4 b5 7. Bc2 Bb7 8. 0-0 g6 9. d4 Bg7 10. a4 0-0 11. d5 Re8 12. Rd1 Qb6 13. axb5 axb5 14. Rxa8 Rxa8 15. Bf4 b4 16. c4 Nh5 17. Bc1 Ra2 18. Nbd2 Bc8 19. Nb3 Qc7 20. Bb1 Ra8 21. Ng5 Ne5 22. f4 Bg4 23. Nf3 Nxf3+ 24. gxf3 Bd7 25. f5 Ba4 26. Bc2 Bxb3 27. Bxb3 Be5 28. Kh1 Ra1 29. Rg1 Bf4 30. Be3 Qa7 31. Bd1 Qa2 32. Bxf4 Nxf4 33. Qd2 Nh3 34. Re1 Qxc4 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.07"]
[Round "5"]
[White "Bozic, Sasa"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "1839"]
[BlackElo "2133"]
[PlyCount "71"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. 0-0 0-0 9. Bg5 Nbd7 10. a4 h6 11. Bxf6 Nxf6 12. Nd2 Be6 13. Rb1 Rc8 14. Re1 Rc6 15. Nf1 Qd7 16. Ne3 Rfc8 17. Ned5 Bd8 18. Rc1 Bxd5 19. Nxd5 Nxe4 20. Bg4 f5 21. Rxe4 fxg4 22. Rxe5 Rxc2 23. Rxc2 Rxc2 24. Re2 Rxe2 25. Qxe2 Qxa4 26. Qe6+ Kh8 27. g3 Qd1+ 28. Kg2 Qf3+ 29. Kg1 Qd1+ 30. Kg2 Qf3+ 31. Kg1 Bg5 32. Qxd6 Qd1+ 33. Kg2 Qf3+ 34. Kg1 Qd1+ 35. Kg2 Qf3+ 36. Kg1 1/2-1/2

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.06"]
[Round "4"]
[White "Nikolaidis, Konstantinos"]
[Black "Danov, Lyubomir"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2133"]
[BlackElo "2349"]
[PlyCount "102"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 g6 6. Nf3 Bf5 7. 0-0 e6 8. Re1 Bxd3 9. Qxd3 Bd6 10. Bg5 Qc7 11. Nbd2 Nge7 12. Bf6 0-0 13. Ne5 Nf5 14. Re2 Ng7 15. Ng4 h5 16. Qh3 Ne8 17. Be5 Qd8 18. Nh6+ Kh7 19. Bxd6 Nxd6 20. Ng4 b5 21. Ne5 Nxe5 22. dxe5 Nf5 23. Nf3 Rc8 24. g4 Ng7 25. Kh1 Rc4 26. Rg1 Rh8 27. Nd4 Kg8 28. g5 b4 29. Nb5 Nf5 30. Qd3 Qb6 31. b3 Rc5 32. c4 Kh7 33. Rd1 Rd8 34. a3 Rcc8 35. Nd6 Nxd6 36. exd6 Rxd6 37. axb4 Qxb4 38. Qf3 Rd7 39. cxd5 exd5 40. Rxd5 Rc3 41. Re3 Rxe3 42. fxe3 Rc7 43. Rd3 Qe1+ 44. Kg2 Rc2+ 45. Kh3 Rf2 46. Qd1 Qa5 47. Kg3 Qa2 48. Qg1 h4+ 49. Kh3 Qe2 50. Rc3 Qf3+ 51. Kxh4 Qe4+ 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.05"]
[Round "3"]
[White "Dimitrijevic, Andjela"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1863"]
[BlackElo "2133"]
[PlyCount "94"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 5. Bd3 d5 6. e5 Nd7 7. Bb5 Qc7 8. d4 a6 9. Ba4 e6 10. 0-0 Be7 11. Bc2 b5 12. Re1 Bb7 13. a3 Rc8 14. Bd3 0-0 15. Be3 Na5 16. Bg5 Qd8 17. Bxe7 Qxe7 18. Nbd2 Nc4 19. b4 cxd4 20. cxd4 f6 21. exf6 Qxf6 22. Ra2 Rce8 23. Nb3 e5 24. dxe5 Ndxe5 25. Nxe5 Rxe5 26. Nc5 Bc8 27. Rxe5 Qxe5 28. Re2 Qh5 29. Bxc4 dxc4 30. Rd2 Qf5 31. f3 Qg5 32. Kh1 h6 33. Qe2 Kh8 34. Ne4 Qe5 35. Nd6 Qa1+ 36. Rd1 Qf6 37. Qe3 Be6 38. Qc5 Bxh3 39. Qh5 Be6 40. Ne4 Qe7 41. Nd6 Bg8 42. Ne4 Bh7 43. Nc5 c3 44. Rd7 Qf6 45. Rc7 Qd6 46. Rd7 c2 47. Nd3 Qxd7 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.04"]
[Round "2"]
[White "Nikolaidis, Konstantinos"]
[Black "Novkovic, Milan"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2133"]
[BlackElo "2356"]
[PlyCount "105"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. 0-0 Nd7 7. Be3 Bg6 8. Nh4 c5 9. c3 Nc6 10. g3 Qb6 11. Qd2 Be7 12. Nxg6 hxg6 13. f4 0-0-0 14. Kg2 Kb8 15. Na3 cxd4 16. cxd4 Bxa3 17. bxa3 Qa5 18. Qb2 Nb6 19. Rab1 Rd7 20. Bd2 Qa4 21. Bb5 Qxd4 22. Qxd4 Nxd4 23. Bxd7 Nxd7 24. Rfc1 Rc8 25. Rxc8+ Kxc8 26. Be3 Nc6 27. Rc1 Kd8 28. h4 Na5 29. Bd4 Nc4 30. Rc3 b6 31. g4 Nb8 32. h5 gxh5 33. gxh5 Nc6 34. Bf2 Ke8 35. Bh4 Kf8 36. Re3 Nd4 37. Bf6 Nf5 38. Bxg7+ Kg8 39. Rg3 Kh7 40. Bf6 d4 41. Kf2 d3 42. Rg1 Kh6 43. Kf3 d2 44. Ke2 Kxh5 45. Kf3 Nd4+ 46. Ke4 Nc2 47. Kf3 Ne1+ 48. Ke2 b5 49. Be7 Ng2 50. Rxg2 d1Q+ 51. Kxd1 Ne3+ 52. Ke2 Nxg2 53. Kf3 0-1

[Event "EU-ch 23rd"]
[Site "Vrnjacka Banja"]
[Date "2023.03.03"]
[Round "1"]
[White "Velten, Paul"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2478"]
[BlackElo "2133"]
[PlyCount "69"]
[EventDate "2023.03.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SRB"]
[SourceTitle "CBM 213"]
[Source "ChessBase"]
[SourceDate "2023.04.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.04.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 0-0 8. Nf3 c5 9. Be2 Qa5 10. 0-0 Rd8 11. Qb3 Nc6 12. Bc4 e6 13. d5 exd5 14. Bxd5 Qxc3 15. Bxf7+ Kh8 16. Rac1 Qxb3 17. Bxb3 Nd4 18. Bxd4 Bxd4 19. Nxd4 Rxd4 20. Rxc5 Rxe4 21. Rc7 Rb8 22. f3 Re8 23. Bf7 Rd8 24. Re1 Bf5 25. Ree7 Rd2 26. g4 Bb1 27. Be6 g5 28. Bf5 Bxa2 29. Rxh7+ Kg8 30. Rcg7+ Kf8 31. Rxg5 Re8 32. Be4 Red8 33. Rh8+ Kf7 34. Rxd8 Rxd8 35. Ra5 1-0

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.08"]
[Round "7"]
[White "Merkouropoulos, Dionysios"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E82"]
[WhiteElo "1570"]
[BlackElo "2157"]
[PlyCount "106"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Be3 b6 7. Qd2 c5 8. d5 e6 9. Nge2 exd5 10. cxd5 Re8 11. Bh6 Bh8 12. g4 Nbd7 13. Ng3 Ne5 14. Be2 Ba6 15. 0-0-0 Bxe2 16. Qxe2 c4 17. h4 b5 18. h5 Rc8 19. hxg6 fxg6 20. Kb1 Nd3 21. Rxd3 cxd3 22. Qxd3 Nd7 23. Nxb5 Ne5 24. Qe2 Rb8 25. Bc1 Qb6 26. Na3 Rec8 27. f4 Nd3 28. e5 Rxc1+ 29. Rxc1 Nxc1 30. Kxc1 dxe5 31. Nc4 Qd4 32. fxe5 Rc8 33. b3 Qf4+ 34. Kc2 Qxg3 35. d6 Bxe5 36. d7 Qc3+ 37. Kd1 Qa1+ 38. Kd2 Qc3+ 39. Kd1 Qa1+ 40. Kd2 Qxa2+ 41. Ke3 Qxb3+ 42. Qd3 Bf4+ 43. Kf2 Qxd3 44. dxc8Q+ Kg7 45. Qb7+ Kh6 46. g5+ Kxg5 47. Qe7+ Kg4 48. Qe6+ Qf5 49. Qe2+ Kh4 50. Qa2 Bg3+ 51. Ke3 Qf4+ 52. Kd3 Qf3+ 53. Kd4 Qf2+ 0-1

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.08"]
[Round "6"]
[White "Nikolaidis, Konstantinos"]
[Black "Katsanis, Vasileios Dimitrios"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2157"]
[BlackElo "1939"]
[PlyCount "76"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. h3 g6 7. Nf3 Bf5 8. 0-0 Bxd3 9. Qxd3 Qc7 10. Re1 Bg7 11. Be3 0-0 12. Nbd2 Rac8 13. Nb3 Rfd8 14. g3 Ne4 15. Bf4 Qd7 16. Kg2 b6 17. Re2 Qb7 18. Rae1 a5 19. Nfd2 Nxd2 20. Nxd2 b5 21. Nf3 b4 22. h4 h5 23. Kh2 Bf6 24. Bg5 Kg7 25. Ne5 bxc3 26. bxc3 Nxe5 27. Bxf6+ exf6 28. dxe5 Qc6 29. Qd4 fxe5 30. Rxe5 Qxc3 31. Qf4 Rc6 32. Qg5 Rf6 33. R1e2 Qc6 34. Rd2 a4 35. Kg1 d4 36. Rc5 Qf3 37. Rc4 Re8 38. Rc1 Rf5 0-1

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.07"]
[Round "4"]
[White "Nikolaidis, Konstantinos"]
[Black "Ziomas, Konstantinos Dimitr"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "2157"]
[BlackElo "1805"]
[PlyCount "77"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 Be6 9. Nd5 Bxd5 10. cxd5 Nd4 11. Bd3 Nf6 12. 0-0 0-0 13. Be3 Nd7 14. Rc1 Rc8 15. Qd2 Rxc1 16. Rxc1 Qb8 17. b4 Rc8 18. Rc3 Nb6 19. Bf1 Bf6 20. Nc2 Rxc3 21. Qxc3 Na4 22. Qd2 Qa7 23. Qd3 b5 24. f4 h6 25. h3 Qb6 26. Bf2 Qa7 27. Kh1 Qb6 28. Bg1 Qa7 29. fxe5 dxe5 30. Qg3 Qd7 31. Nxd4 exd4 32. e5 Bg5 33. d6 Qa7 34. Qg4 Be3 35. Qc8+ Kh7 36. Bd3+ g6 37. e6 fxe6 38. Qxe6 Nb6 39. Qe7+ 1-0

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.07"]
[Round "5"]
[White "Papasimakopoulos, Alexandros"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2334"]
[BlackElo "2157"]
[PlyCount "95"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bd6 5. Na3 Na5 6. Be2 a6 7. c4 Qe7 8. Nc2 c5 9. d4 Nc6 10. d5 Nb8 11. f3 Bc7 12. Bc3 d6 13. g4 Bxg4 14. h4 Bh5 15. Nh3 Nbd7 16. a3 Bg6 17. Nf2 Nh5 18. Rh3 f5 19. f4 Ndf6 20. fxe5 dxe5 21. b4 b6 22. a4 f4 23. a5 Ng3 24. Bf3 e4 25. axb6 Bxb6 26. Bg4 Nxg4 27. Qxg4 Bf5 28. Qxf4 Bc7 29. Qg5 Qxg5 30. hxg5 Bxh3 31. Nxh3 cxb4 32. Nxb4 a5 33. Bxg7 Rg8 34. Bd4 Rf8 35. Nf2 Rf5 36. c5 Be5 37. Bxe5 Rxe5 38. Nh3 Rf5 39. Nf4 Rxg5 40. Ne6 Rb8 41. Na6 Rb2 42. Nxg5 Re2+ 43. Kd1 Rxe3 44. Rxa5 Rb3 45. Kc2 Re3 46. d6 Re2+ 47. Kc3 e3 48. c6 1-0

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.06"]
[Round "3"]
[White "Berbatis, Antonios"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "1850"]
[BlackElo "2157"]
[PlyCount "95"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 7. 0-0 a6 8. e5 Bxc3 9. bxc3 Nge7 10. Re1 Qa5 11. Qd3 Ng6 12. Qe3 0-0 13. a4 f6 14. Ba3 Rf7 15. exf6 Rxf6 16. Bd6 Nce7 17. Qd2 Nf5 18. Ne5 Nxd6 19. Qxd6 Nxe5 20. Qxe5 Qb6 21. Re3 d5 22. Bd3 Bd7 23. Rf1 Raf8 24. c4 dxc4 25. Bxc4 Kh8 26. a5 Qc6 27. Qe4 Qxe4 28. Rxe4 Rf4 29. Bd3 Rxe4 30. Bxe4 Bc6 31. Bxc6 bxc6 32. Rc1 Rc8 33. Re1 c5 34. Rxe6 c4 35. Re2 g6 36. f4 Kg7 37. Kf2 Kf6 38. Rc2 Ke6 39. Ke3 Rc5 40. Kd4 Rxa5 41. Rxc4 Ra2 42. g4 Rxh2 43. Rc6+ Kf7 44. Rxa6 Rh4 45. Ra7+ Kg8 46. Ra8+ Kg7 47. Ra7+ Kg8 48. Ra8+ 1/2-1/2

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.06"]
[Round "2"]
[White "Nikolaidis, Konstantinos"]
[Black "Triantafyllakis, Dimitrios"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2157"]
[BlackElo "1595"]
[PlyCount "69"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5. Qe2 g6 6. 0-0 Bg7 7. d4 0-0 8. Rd1 a6 9. Ba4 Qc7 10. Bg5 b5 11. Bc2 Nb6 12. d5 Re8 13. Bf4 Nh5 14. Be3 Bd7 15. Nbd2 Rab8 16. Rab1 e6 17. dxe6 Bxe6 18. a4 Nc4 19. Nxc4 Bxc4 20. Qd2 Red8 21. axb5 axb5 22. Bg5 Re8 23. Qxd6 Qxd6 24. Rxd6 h6 25. Be3 b4 26. Nd2 Ba2 27. Ra1 Be6 28. Bxc5 bxc3 29. bxc3 Bxc3 30. Ra3 Be5 31. Rda6 Rbc8 32. R6a5 Red8 33. Nf3 Bb2 34. Rd3 Rxd3 35. Bxd3 1-0

[Event "Chalkida Evoiki op 5th"]
[Site "Chalkida"]
[Date "2023.01.05"]
[Round "1"]
[White "Papadopoulos, Antonios Ioan"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "D97"]
[WhiteElo "1446"]
[BlackElo "2157"]
[PlyCount "52"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Bg7 6. e4 c6 7. Nf3 0-0 8. Be2 b5 9. Qd3 b4 10. Nd1 c5 11. dxc5 Qc7 12. 0-0 Nbd7 13. Be3 Bb7 14. Rc1 Bxe4 15. Qc4 Rab8 16. b3 Rfc8 17. Nb2 Bd5 18. Qc2 Ng4 19. Na4 Bxf3 20. g3 Nxe3 21. fxe3 Bxe2 22. Qxe2 Qc6 23. Qc4 Ne5 24. Qe2 Rd8 25. e4 Rd4 26. Rfe1 Nd3 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.10"]
[Round "9"]
[White "Tsironis, Alexandros"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1990"]
[BlackElo "2181"]
[PlyCount "61"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. e3 a6 5. Nf3 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. e4 h6 9. 0-0 Nb4 10. exd5 Nfxd5 11. Nxd5 Qxd5 12. Be2 0-0 13. c3 Qxd1 14. Rfxd1 Nd5 15. Bg3 Re8 16. c4 Nf6 17. Ne5 b6 18. Bf3 Ra7 19. b4 Bf8 20. Bc6 Ree7 21. Rd8 Bb7 22. Rad1 Rc7 23. b5 axb5 24. cxb5 Rc8 25. h3 g5 26. Rxc8 Bxc8 27. Rd8 Bb7 28. Nd7 Nxd7 29. Rxd7 Bxc6 30. bxc6 Rxa2 31. c7 1-0

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.09"]
[Round "8"]
[White "Nikolaidis, Konstantinos"]
[Black "Durak, Can"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2181"]
[BlackElo "2180"]
[PlyCount "46"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Qb6 6. Nb5 Bg7 7. Be3 Qd8 8. N1c3 Nf6 9. Be2 0-0 10. 0-0 d6 11. f3 Be6 12. Qd2 a6 13. Nd4 Nxd4 14. Bxd4 Qa5 15. Rad1 Rfc8 16. b3 b5 17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 bxc4 20. Bxc4 Nd7 21. Be3 Ne5 22. Rc2 Nxc4 23. Rfc1 Bb2 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.08"]
[Round "7"]
[White "Sougakis, Anthimos"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2060"]
[BlackElo "2181"]
[PlyCount "65"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. Bg5 Be6 9. Bxf6 Bxf6 10. a4 0-0 11. 0-0 Nc6 12. Nd5 Bxd5 13. Qxd5 Qc7 14. c3 Rad8 15. Rfd1 Ne7 16. Qb3 Qc6 17. Ne1 Bg5 18. Bf3 Kh8 19. Nc2 g6 20. Nb4 Qb6 21. a5 Qb5 22. Rd3 f5 23. Qd1 Nc6 24. Rd5 Qc4 25. Ra4 Ne7 26. Rxd6 Qc7 27. Rd3 fxe4 28. Bxe4 Nc8 29. Nd5 Qc5 30. Qe2 Nd6 31. b4 Qc4 32. Nb6 Qxe4 33. Qd1 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.07"]
[Round "6"]
[White "Nikolakis, Panagiotis Marios"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1900"]
[BlackElo "2181"]
[PlyCount "126"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qb6 8. Bb3 e6 9. f3 Be7 10. Qd2 0-0 11. 0-0-0 Qc7 12. Kb1 b5 13. h4 Nc5 14. g4 b4 15. Nce2 Rb8 16. Bxf6 Bxf6 17. g5 Be7 18. h5 a5 19. g6 Bf6 20. Qe3 a4 21. gxf7+ Rxf7 22. Bc4 Bd7 23. f4 Nxe4 24. Bxe6 Bxe6 25. Nxe6 Qc4 26. Rd4 Nc3+ 27. Qxc3 Qxe6 28. Qc4 Re7 29. Qxe6+ Rxe6 30. Rd2 Bc3 31. Rd3 Rxe2 32. bxc3 bxc3+ 33. Kc1 Rf2 34. Rxc3 Rxf4 35. h6 Rbf8 36. hxg7 Rf1+ 37. Rxf1 Rxf1+ 38. Kb2 Rf4 39. Rd3 Kxg7 40. Rxd6 h5 41. Kc3 h4 42. Rd3 Kg6 43. Kd2 Kg5 44. Ke2 Kg4 45. Rd8 Kg3 46. Rg8+ Rg4 47. Rh8 Kg2 48. Rf8 h3 49. Rf2+ Kg3 50. Rf3+ Kh4 51. Rf2 Re4+ 52. Kf1 Kg3 53. Rd2 Re3 54. Rd8 Rf3+ 55. Ke2 Kg2 56. Rg8+ Rg3 57. Rf8 h2 58. Rf2+ Kh3 59. Rf1 Rg1 60. Rf8 h1Q 61. Rh8+ Kg4 62. Rxh1 Rxh1 63. Kd3 Kf5 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.06"]
[Round "5"]
[White "Nikolaidis, Konstantinos"]
[Black "Ladopoulos, Dimitrios"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2181"]
[BlackElo "2335"]
[PlyCount "60"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. h4 Nc6 8. g5 hxg5 9. Bxg5 Qb6 10. Nb3 a6 11. Qd2 Qc7 12. a3 b5 13. 0-0-0 Bb7 14. f4 0-0-0 15. Be2 Be7 16. Qe3 Kb8 17. Rh3 Rhe8 18. h5 d5 19. e5 d4 20. Nxd4 Rxd4 21. exf6 gxf6 22. Bh6 Bc5 23. Qg3 Ne7 24. Qg7 Nf5 25. Qxf6 Rxd1+ 26. Bxd1 Bd4 27. Qg5 Rh8 28. Rd3 f6 29. Qg6 Rxh6 30. Qg8+ Bc8 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.05"]
[Round "4"]
[White "Athanasiadis, Mihail"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2058"]
[BlackElo "2181"]
[PlyCount "74"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e5 5. Nf3 Bg4 6. c3 Nd7 7. Bd3 Bd6 8. 0-0 Ngf6 9. Bg5 h6 10. Be3 Qc7 11. Nbd2 exd4 12. cxd4 Bxh2+ 13. Kh1 Bg3 14. Qb3 Be6 15. Qc2 Ng4 16. Bg1 Ndf6 17. e5 Nh5 18. Ne4 0-0 19. Nfd2 Qe7 20. Nf3 Bd5 21. Qc5 Qxc5 22. Nxc5 Bxe5 23. Bf2 Bg3 24. Be1 Bxe1 25. Rfxe1 b6 26. Ne5 Ng3+ 27. Kg1 Nxe5 28. Rxe5 bxc5 29. Kf2 f6 30. Re7 Rfe8 31. Rae1 Rxe7 32. Rxe7 Kf8 33. Re1 Nh5 34. g3 Re8 35. Rc1 Nxg3 36. Rxc5 Ne4+ 37. Bxe4 Rxe4 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.04"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Koukouves, Vlasios"]
[Result "1-0"]
[ECO "B49"]
[WhiteElo "2181"]
[BlackElo "1779"]
[PlyCount "67"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 b5 8. Nxc6 dxc6 9. f4 Nf6 10. 0-0 Be7 11. Bf3 0-0 12. g4 Bb7 13. g5 Nd7 14. Bg2 Rfe8 15. Qg4 b4 16. Ne2 c5 17. c4 Bf8 18. Rfd1 Rad8 19. e5 Nb8 20. Bxb7 Qxb7 21. Qg2 Qc7 22. Ng3 Nc6 23. b3 Rxd1+ 24. Rxd1 Rd8 25. Rxd8 Nxd8 26. Qa8 Qd7 27. Qxa6 Nc6 28. Kf2 Nd4 29. Qa8 Nc2 30. Bxc5 Qd2+ 31. Kg1 Qd1+ 32. Kg2 Ne1+ 33. Kh3 h5 34. gxh6 1-0

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.04"]
[Round "2"]
[White "Nikolaidis, Konstantinos"]
[Black "Triantafilidis, Mihail"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2181"]
[BlackElo "1991"]
[PlyCount "86"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. Qe2 e6 7. e5 Nfd7 8. Bd2 d5 9. 0-0-0 b5 10. Qe3 b4 11. Ne2 c5 12. Nf4 cxd4 13. Qe2 Bxf3 14. Qxf3 Nc6 15. Bb5 Ndxe5 16. Qe2 Bd6 17. Nh5 0-0 18. f4 d3 19. Qf2 Rc8 20. fxe5 Nxe5 21. Qd4 dxc2 22. Rde1 f6 23. Bxb4 Bxb4 24. Qxb4 Rb8 25. Rxe5 fxe5 26. Qg4 Qe7 27. Bd3 e4 28. Bxc2 Rf2 29. Qg3 Rbf8 30. a3 g6 31. Kb1 R2f5 32. Bd1 Kh8 33. Qc3+ Kg8 34. Ng3 Rf2 35. Ne2 Rxg2 36. Qe5 Qf6 37. Qc3 Qxc3 38. Nxc3 Rb8 39. b3 Rc8 40. Ne2 e5 41. h4 d4 42. Rg1 Rxg1 43. Nxg1 d3 0-1

[Event "Thessaloniki op 1st"]
[Site "Thessaloniki"]
[Date "2022.08.03"]
[Round "1"]
[White "Sforza, Michelangelo"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1904"]
[BlackElo "2181"]
[PlyCount "45"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 7. 0-0 Nge7 8. Bg5 f6 9. Bh4 0-0 10. Qe2 Ng6 11. Rfd1 Qe7 12. Bg3 Nge5 13. Nxe5 Nxe5 14. Bb3 Kh8 15. Rac1 b6 16. a3 Bc5 17. Qd2 Ba6 18. Na4 Rac8 19. Nxc5 Rxc5 20. Rxc5 Qxc5 21. Rc1 Qb5 22. Rd1 Qxb3 23. Rc1 0-1

[Event "GRE-chT Final 4 48th"]
[Site "Larisa"]
[Date "2021.11.06"]
[Round "1.1"]
[White "Balokas, Dimitrios"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "A32"]
[WhiteElo "2208"]
[BlackElo "2178"]
[PlyCount "117"]
[EventDate "2021.11.06"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "GRE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Neapolis Sykeon"]
[BlackTeam "Evoiki ES"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd2 c5 6. Nge2 cxd4 7. Nxd4 Nc6 8. Nxc6 bxc6 9. Be2 d5 10. 0-0 e5 11. Qa4 Qb6 12. cxd5 cxd5 13. Qb3 Rb8 14. a3 Be7 15. Qxb6 Rxb6 16. b4 Bd7 17. Rfc1 d4 18. Nd1 Rc8 19. Rxc8+ Bxc8 20. b5 Bf5 21. exd4 exd4 22. a4 Rb7 23. Rc1 h6 24. f3 Ba3 25. Rc6 Nd7 26. g4 Bg6 27. Nf2 Nc5 28. Bc4 Nxa4 29. Rxg6 Nb2 30. Rc6 Nxc4 31. Rxc4 Rxb5 32. Rxd4 Bc5 33. Re4 Rb2 34. Be3 Bxe3 35. Rxe3 a5 36. Ra3 Rb5 37. Kg2 f5 38. gxf5 Rxf5 39. Ne4 Rd5 40. Kg3 Kf7 41. Rb3 Kg6 42. Rb6+ Kf7 43. Rb5 Rxb5 44. Nd6+ Ke6 45. Nxb5 Kd5 46. Kf4 Kc4 47. Nd6+ Kd5 48. Nf5 a4 49. Ke3 a3 50. Nd4 a2 51. Nc2 Ke5 52. f4+ Kf5 53. Kf3 g5 54. fxg5 hxg5 55. h3 Kg6 56. Kg4 Kh6 57. Na1 Kg6 58. Nc2 Kh6 59. Na1 1/2-1/2

[Event "GRE-chT Final 4 48th"]
[Site "Larisa"]
[Date "2021.11.06"]
[Round "1.2"]
[White "Nikolaidis, Konstantinos"]
[Black "Balokas, Dimitrios"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2178"]
[BlackElo "2208"]
[PlyCount "73"]
[EventDate "2021.11.06"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "GRE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Evoiki ES"]
[BlackTeam "Neapolis Sykeon"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 a6 7. f4 e6 8. e5 Ng8 9. Qf3 Bb4 10. Bd2 Nge7 11. Ne4 Bxd2+ 12. Nexd2 0-0 13. Ne4 Nf5 14. 0-0-0 a5 15. g4 Qe3+ 16. Qxe3 Nxe3 17. Rd3 Nxf1 18. Rxf1 Nb4 19. Rd2 Nxa2+ 20. Kb1 Nb4 21. Nbc5 Nd5 22. Rf3 b6 23. Na4 Bb7 24. Rb3 Bc6 25. Nac3 a4 26. Ra3 Nxf4 27. Nd6 Ng6 28. Re2 f6 29. exf6 Rxf6 30. Nce4 Rf1+ 31. Ka2 b5 32. b3 b4 33. Rxa4 Bxa4 34. bxa4 Nf4 35. Rd2 Nd5 36. Kb3 Ra1 37. Nc5 0-1

[Event "GRE-chT 48th"]
[Site "Athens"]
[Date "2021.09.10"]
[Round "5.1"]
[White "Zervos, Lazaros"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2036"]
[BlackElo "2199"]
[PlyCount "80"]
[EventDate "2021.09.07"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Zeenon Glyfathas"]
[BlackTeam "Evoiki ES"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 d5 5. 0-0 0-0 6. b3 a5 7. Bb2 a4 8. c4 c6 9. e3 Bf5 10. Qe2 axb3 11. axb3 Rxa1 12. Bxa1 Qb6 13. Nbd2 Ne4 14. Rc1 Na6 15. c5 Qc7 16. Nxe4 Bxe4 17. Qd2 Ra8 18. Bc3 Qc8 19. Ra1 Nc7 20. Qd1 Nb5 21. Bb2 Qb8 22. Ra4 Ra7 23. Bf1 Qa8 24. Nd2 Bf5 25. Qa1 Ra6 26. Rxa6 Qxa6 27. Qa4 Bc2 28. Bxb5 Qxb5 29. Qxb5 cxb5 30. Bc3 Kf8 31. b4 Ke8 32. g4 h6 33. f3 f5 34. Kf2 Kf7 35. gxf5 gxf5 36. Kg3 e6 37. h3 Kg6 38. Nf1 Bd3 39. Nd2 Bc2 40. Nf1 Bd3 1/2-1/2

[Event "GRE-chT 48th"]
[Site "Athens"]
[Date "2021.09.08"]
[Round "2.1"]
[White "Dimopoulos, Dimitrios1111"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1621"]
[BlackElo "2199"]
[PlyCount "95"]
[EventDate "2021.09.07"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Ames Neas Erythreas"]
[BlackTeam "Evoiki ES"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. 0-0 g6 5. d3 Bg7 6. Nbd2 0-0 7. e4 Nc6 8. c3 e5 9. a4 b6 10. Re1 d4 11. Nc4 Ne8 12. Qc2 Qd7 13. Bd2 dxc3 14. bxc3 Ba6 15. Rad1 Nc7 16. Bc1 Rad8 17. Bf1 h6 18. Nh4 Qe7 19. Ng2 Kh7 20. Nge3 Qe6 21. Bg2 Ne7 22. Kh1 f5 23. exf5 gxf5 24. f4 e4 25. Nb2 Ned5 26. Nxd5 Nxd5 27. dxe4 Nxc3 28. exf5 Qf6 29. Rxd8 Rxd8 30. Re6 Qf7 31. f6+ Kg8 32. fxg7 Qxe6 33. Qxc3 Qe2 34. h3 Qf2 35. Be3 Qxg3 36. Qf6 Qe1+ 37. Kh2 Qxe3 38. Qxd8+ Kxg7 39. Qd7+ Kf6 40. Qd6+ Kf5 41. Qf8+ Kg6 42. Nd1 Qd2 43. Qe8+ Kg7 44. Ne3 Qf2 45. Nf5+ Kf6 46. Qe5+ Kf7 47. Qe7+ Kg6 48. Qe6+ 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2020.01.03"]
[Round "8"]
[White "Szustakowski, Antoni"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2299"]
[BlackElo "2200"]
[PlyCount "53"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8. Nf3 exd4 9. Bc4 Nc6 10. 0-0 d3 11. Bxd3 Bc5 12. e5 h6 13. e6 fxe6 14. Bg6+ Kf8 15. Be4 Rb8 16. Be3 Bd6 17. Rfe1 Qf6 18. Qa4 Na5 19. Bxb7 Rxb7 20. Bd4 Qf7 21. Re3 Rb8 22. Ne5 Bxe5 23. Bxe5 Qe8 24. Qf4+ Qf7 25. Qe4 Kg8 26. Bxg7 Rh7 27. Be5 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2020.01.02"]
[Round "7"]
[White "Nikolaidis, Konstantinos"]
[Black "Punin, Andrii"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2200"]
[BlackElo "2311"]
[PlyCount "76"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. Nge2 cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. h4 Nxe5 13. Be2 Ng4 14. Bxg4 Qxg4 15. f3 Qh5 16. g4 Qg6 17. fxe4 e5 18. Bxe5 Re8 19. 0-0-0 Rxe5 20. Nxd5 Bf8 21. Nf5 Bxf5 22. exf5 Qc6 23. Rhe1 Rxe1 24. Rxe1 Qh6+ 25. Kb1 Qxh4 26. Qe4 Rd8 27. a4 Qg3 28. Ka2 a6 29. f6 g6 30. Ne7+ Kh8 31. Re3 Qf2 32. g5 Qd2 33. Nd5 Qa5 34. b3 Qd2+ 35. Kb1 Qd1+ 36. Kb2 Qd2+ 37. Kb1 Qd1+ 38. Kb2 Qd2+ 1/2-1/2

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.31"]
[Round "6"]
[White "Wisniewski, Michal"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "A24"]
[WhiteElo "2158"]
[BlackElo "2200"]
[PlyCount "62"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 e5 7. d3 c6 8. Rb1 a5 9. a3 Re8 10. Bg5 h6 11. Bxf6 Bxf6 12. b4 axb4 13. axb4 d5 14. cxd5 cxd5 15. e4 dxe4 16. dxe4 Be6 17. b5 Nd7 18. Nd2 Nb6 19. Nb3 Bc4 20. Nd5 Nxd5 21. exd5 Bxf1 22. Qxf1 e4 23. Rd1 Qb6 24. Nd2 e3 25. fxe3 Qxe3+ 26. Kh1 Bc3 27. Nc4 Qe1 28. d6 Qxf1+ 29. Rxf1 Ra2 30. Bxb7 Ree2 31. Rd1 Bb4 0-1

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.29"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Evchin, Maxim"]
[Result "0-1"]
[ECO "D90"]
[WhiteElo "2200"]
[BlackElo "2315"]
[PlyCount "78"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Nb6 6. Nf3 Bg7 7. Bf4 0-0 8. Rc1 Na6 9. e3 c5 10. Be2 cxd4 11. exd4 Be6 12. 0-0 Nb4 13. a3 Nc6 14. Be3 Nd5 15. Na4 Nxe3 16. fxe3 Bh6 17. Rc3 Bd5 18. Qd3 f5 19. Qb5 e6 20. Nc5 a6 21. Qa4 Qe7 22. Kh1 Rad8 23. Rd1 g5 24. Qc2 g4 25. Nd2 e5 26. Nf1 Bg7 27. dxe5 Nxe5 28. Ng3 f4 29. exf4 Rxf4 30. Nf5 Qf6 31. Rxd5 Rxd5 32. Qb3 Rxf5 33. Qxd5+ Kh8 34. Rc1 Qh6 35. Nd3 Rf8 36. Rf1 Re8 37. Nc5 Qe3 38. Bd1 b6 39. Ne6 Nd3 0-1

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.29"]
[Round "4"]
[White "Zochowski, Kacper"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2313"]
[BlackElo "2200"]
[PlyCount "93"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 b6 7. Bb2 c5 8. e3 Nc6 9. Nc3 Ba6 10. d3 Qd7 11. Qe2 Rfd8 12. Rfd1 Rac8 13. h3 Qe8 14. g4 h6 15. Rab1 Rc7 16. Nb5 Rcc8 17. Ba1 Bb7 18. Rbc1 Rd7 19. Ne1 a6 20. Nc3 d4 21. Ne4 Nh7 22. Nc2 e5 23. Ng3 Qf8 24. Bd5 Bh4 25. Rf1 Ne7 26. Bxb7 Rxb7 27. Ne1 dxe3 28. Qxe3 Bg5 29. Qe4 Rd7 30. Rd1 Ng6 31. Nh5 Qd6 32. Ng2 Nf6 33. Nxf6+ Bxf6 34. Rfe1 Rcd8 35. Re3 Re7 36. Rf3 Nh4 37. Nxh4 Bxh4 38. Re3 Bg5 39. Re2 Bf4 40. Bc3 Qf6 41. b4 Re6 42. bxc5 bxc5 43. Bd2 Rd4 44. Qa8+ Rd8 45. Qe4 Rd4 46. Qa8+ Rd8 47. Qe4 1/2-1/2

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.28"]
[Round "2"]
[White "Marzano, Carlo"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "D95"]
[WhiteElo "2106"]
[BlackElo "2200"]
[PlyCount "62"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Qb3 dxc4 6. Bxc4 0-0 7. Nf3 c5 8. d5 Ne8 9. e4 Nd6 10. Be2 Bg4 11. 0-0 Nd7 12. a4 a6 13. h3 Bxf3 14. Bxf3 b5 15. axb5 axb5 16. Rxa8 Qxa8 17. Bg5 Re8 18. Rc1 c4 19. Qc2 b4 20. Nd1 Nc5 21. Ne3 Nd3 22. Rb1 b3 23. Qe2 Qa2 24. Qf1 Bxb2 25. Nxc4 Nxc4 26. Qxd3 Na3 27. Rf1 Be5 28. Bd1 b2 29. Bc2 Nxc2 30. Qxc2 Rb8 31. Rb1 f6 0-1

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.27"]
[Round "1"]
[White "Nikolaidis, Konstantinos"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "B29"]
[WhiteElo "2200"]
[BlackElo "2372"]
[PlyCount "92"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Ne4 f5 6. exf6 Nxf6 7. Qe2 Be7 8. d4 cxd4 9. Nxd4 0-0 10. g3 Nxe4 11. Qxe4 d5 12. Qe2 e5 13. Nb3 Nc6 14. Bg2 e4 15. Bf4 Bg5 16. Bxg5 Qxg5 17. 0-0 Ne5 18. Qd2 Qxd2 19. Nxd2 b6 20. f4 Ng4 21. Rfe1 Ba6 22. c4 dxc4 23. Nxe4 Rad8 24. Bh3 Bc8 25. Rac1 Rd4 26. b3 cxb3 27. axb3 Bf5 28. Bxg4 Bxg4 29. Ng5 Rd7 30. h3 h6 31. hxg4 hxg5 32. f5 g6 33. Rc6 gxf5 34. Rg6+ Rg7 35. Rxg7+ Kxg7 36. Re5 Kg6 37. Re7 fxg4 38. Rxa7 Rf3 39. Kg2 Rxb3 40. Re7 Rb2+ 41. Kf1 Kf5 42. Re8 b5 43. Re3 b4 44. Re8 Rb3 45. Kg2 Rc3 46. Kf2 Rc2+ 0-1

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.23"]
[Round "11"]
[White "Nikolaidis, Konstantinos"]
[Black "Sarno, Spartaco"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2179"]
[BlackElo "2319"]
[PlyCount "60"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 g6 2. e4 d6 3. Nc3 Bg7 4. Be3 Nf6 5. Qd2 0-0 6. f3 c6 7. Nge2 b5 8. a3 Nbd7 9. g4 Nb6 10. b3 a5 11. a4 b4 12. Nd1 c5 13. Rc1 cxd4 14. Bxd4 e5 15. Bxb6 Qxb6 16. g5 Nh5 17. Ne3 Be6 18. Ng3 Nf4 19. Nd5 Nxd5 20. exd5 e4 21. Nxe4 Bxd5 22. Qf2 Bd4 23. Qh4 Rae8 24. Bd3 f5 25. gxf6 Bxf6 26. Qf2 Bd4 27. Qg2 Bc3+ 28. Kd1 Qe3 29. Qe2 Qxf3 30. Qxf3 Rxf3 0-1

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.22"]
[Round "10"]
[White "Vareille, Francois"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "E63"]
[WhiteElo "2417"]
[BlackElo "2179"]
[PlyCount "53"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. Nf3 Nc6 7. 0-0 e5 8. h3 a6 9. Be3 h6 10. dxe5 dxe5 11. Qc1 Be6 12. Bxh6 Qc8 13. Qg5 Bxh3 14. Bxg7 Kxg7 15. Nxe5 Rh8 16. Nxc6 Bxg2 17. Kxg2 Qh3+ 18. Kf3 Rh5 19. Rh1 Qxh1+ 20. Rxh1 Rxg5 21. Nb4 Rf5+ 22. Kg2 Ng4 23. Rh4 Nf6 24. Nd3 Rd8 25. c5 b6 26. Ra4 a5 27. g4 1/2-1/2

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.21"]
[Round "9"]
[White "Nikolaidis, Konstantinos"]
[Black "Akesson, Ralf"]
[Result "1/2-1/2"]
[ECO "D90"]
[WhiteElo "2179"]
[BlackElo "2376"]
[PlyCount "72"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Nb6 6. Nf3 Bg7 7. Bf4 0-0 8. e3 Be6 9. Be2 c5 10. Rc1 Nc6 11. dxc5 Nd5 12. Qa4 Nxc3 13. bxc3 Qd5 14. c4 Qxc5 15. 0-0 Qa5 16. Qb3 b6 17. Rfd1 h6 18. Nd4 Bd7 19. Nb5 Bf5 20. e4 Bxe4 21. Bd2 Qa6 22. Qe3 Bf5 23. Nc7 Qxa2 24. Nxa8 Rxa8 25. Bf3 Rc8 26. Bxc6 Rxc6 27. Qxe7 Re6 28. Qd8+ Kh7 29. Bc3 Bxc3 30. Rxc3 Re2 31. Qf6 Be6 32. h3 Rd2 33. Re1 Re2 34. Rd1 Rd2 35. Re1 Re2 36. Rd1 Rd2 1/2-1/2

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.20"]
[Round "8"]
[White "Panush, Viktor"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1933"]
[BlackElo "2179"]
[PlyCount "100"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. d4 Nc6 7. Nc3 e5 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Nb5 Ne8 11. Bg5 f6 12. Be3 a6 13. Nc3 Nd6 14. Nd2 Nf5 15. Bd5+ Kh8 16. Bc5 Ncd4 17. Rad1 Ne6 18. Ba3 Nfd4 19. b3 c6 20. Bg2 f5 21. e3 Nc2 22. Bb2 e4 23. Ndb1 b5 24. Rxd8+ Nxd8 25. a3 b4 26. axb4 Nxb4 27. Rd1 Be6 28. Bf1 Nb7 29. Ba3 a5 30. Na4 h6 31. Kg2 Kg8 32. Rd2 Kf7 33. Nbc3 Be5 34. Ne2 g5 35. Bb2 Bxb2 36. Rxb2 Nd3 37. Rb1 Ndc5 38. Nd4 Ra6 39. Ra1 Bd7 40. Be2 Kf6 41. Rd1 Nxa4 42. bxa4 Rb6 43. Nc2 Ke7 44. Ra1 Rb2 45. Bd1 Nc5 46. Nd4 Nd3 47. Ne2 Kd6 48. Kg1 Kc5 49. Nd4 Nxf2 50. Nb3+ Kb4 0-1

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.19"]
[Round "7"]
[White "Nikolaidis, Konstantinos"]
[Black "Sturua, Zurab"]
[Result "0-1"]
[ECO "E34"]
[WhiteElo "2179"]
[BlackElo "2540"]
[PlyCount "172"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. e3 c5 7. Bd2 Bxc3 8. Bxc3 cxd4 9. Bxd4 Nc6 10. Bc3 Bd7 11. a3 Rc8 12. Nf3 Ne7 13. Qd3 Ba4 14. Qd4 Qxd4 15. Bxd4 Nc6 16. Bc3 0-0 17. Bd3 Rfd8 18. Ke2 Rxd3 19. Kxd3 Bb5+ 20. Kd2 Ne4+ 21. Ke1 Nc5 22. Rd1 Nd3+ 23. Rxd3 Bxd3 24. Kd2 Be4 25. Ke2 e5 26. Rd1 f6 27. Rd7 Nb8 28. Rd1 Na6 29. Ne1 Nc5 30. f3 Bc6 31. e4 Ba4 32. Rd2 Nd7 33. Nc2 Bxc2 34. Rxc2 Kf7 35. Kd1 Nb8 36. Bd2 Nc6 37. Be3 Ke6 38. Rc3 h5 39. Rd3 g6 40. Bc5 b6 41. Rd6+ Kf7 42. Be3 Ke7 43. Rd3 Na5 44. b3 Ke6 45. Bd2 Nb7 46. Rc3 Rxc3 47. Bxc3 f5 48. Bb4 fxe4 49. fxe4 a5 50. Bf8 Kf7 51. Bh6 Nd6 52. Be3 b5 53. Bb6 a4 54. Bc7 Nxe4 55. bxa4 bxa4 56. Bxe5 Ke6 57. Bg7 Kd5 58. Kc2 Kc4 59. Be5 Ng5 60. Bf4 Ne6 61. Be5 Nd8 62. Bf6 Nf7 63. h3 Nd6 64. g4 hxg4 65. hxg4 Nb5 66. Bb2 Nd4+ 67. Kd2 Ne6 68. Kc2 Nc7 69. Be5 Nd5 70. g5 Ne7 71. Bf6 Nf5 72. Bd8 Nd4+ 73. Kb2 Kd3 74. Be7 Nf3 75. Bd8 Nd2 76. Be7 Nc4+ 77. Ka2 Kc2 78. Bc5 Nd2 79. Be3 Ne4 80. Bf4 Nc3+ 81. Ka1 Kb3 82. Bd6 Nb5 83. Be7 Nxa3 84. Bf8 Nc2+ 85. Kb1 a3 86. Bg7 a2+ 0-1

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.18"]
[Round "6"]
[White "Mantovani, Renzo"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2301"]
[BlackElo "2179"]
[PlyCount "37"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. c4 Rc8 8. Nc3 Qc7 9. b3 e6 10. 0-0 Nf6 11. Be3 Be7 12. Rac1 0-0 13. h3 Qb8 14. Rfd1 b5 15. cxb5 axb5 16. a4 b4 17. Na2 d5 18. exd5 Nxd5 19. Ne5 1/2-1/2

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.16"]
[Round "5"]
[White "Nikolaidis, Konstantinos"]
[Black "Uzuner, Tufan Can"]
[Result "1-0"]
[ECO "E35"]
[WhiteElo "2179"]
[BlackElo "1870"]
[PlyCount "51"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 c5 7. dxc5 h6 8. Bh4 g5 9. Bg3 Ne4 10. e3 Nc6 11. Bd3 Bxc3+ 12. bxc3 Nxc5 13. h4 Qf6 14. Rd1 Nxd3+ 15. Qxd3 Bf5 16. hxg5 Qg6 17. Qb5 0-0-0 18. Rxh6 Rxh6 19. gxh6 Bg4 20. Rb1 Na5 21. Rb2 b6 22. Qa6+ Kd7 23. Qxa7+ Ke8 24. Qxb6 Nc4 25. h7 Ke7 26. Bh4+ 1-0

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.15"]
[Round "4"]
[White "Godena, Michele"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2449"]
[BlackElo "2179"]
[PlyCount "53"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 5. d4 exd4 6. Bd3 c5 7. 0-0 Ne7 8. exd5 Nxd5 9. Re1+ Be7 10. Ng5 g6 11. Qf3 0-0 12. Rxe7 Nxe7 13. Nde4 Nd7 14. Nxh7 Kxh7 15. Qh3+ Kg8 16. Bg5 f6 17. Bc4+ Rf7 18. Bxf6 Nxf6 19. Nxf6+ Kg7 20. Qh7+ Kxf6 21. Qxf7+ Ke5 22. Re1+ Kd6 23. Qf6+ Kd7 24. Re6 Nf5 25. Qf7+ Ne7 26. Bb5+ Kc7 27. Qf4+ 1-0

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.14"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Shabalov, Alexander"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2179"]
[BlackElo "2528"]
[PlyCount "101"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 Nxc3 7. bxc3 g6 8. e4 Bg7 9. Bb5+ Nd7 10. 0-0 0-0 11. Re1 a6 12. Bd3 c5 13. Rb1 Qc7 14. Qe2 e5 15. d5 Rfc8 16. c4 b5 17. Bd2 b4 18. h4 Nf6 19. Bc2 Rd8 20. Nh2 Bc8 21. Bg5 h6 22. Bd2 Qe7 23. Rb3 a5 24. Rd3 a4 25. g3 Bd7 26. Bc1 Re8 27. Rdd1 Rab8 28. Qe3 Qd6 29. Kg2 Re7 30. Re2 Nh5 31. Qf3 Qa6 32. Qd3 Ree8 33. Rde1 f5 34. f3 f4 35. gxf4 Nxf4+ 36. Bxf4 exf4 37. e5 Bf5 38. Qd1 Qxc4 39. Bxa4 Red8 40. d6 Qa6 41. Bc2 c4 42. Qd5+ Kh8 43. Bxf5 gxf5 44. d7 b3 45. e6 bxa2 46. e7 Qg6+ 47. Ng4 Re8 48. Re6 Qh5 49. d8Q Qxh4 50. Qxb8 Qg3+ 51. Kh1 1-0

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.13"]
[Round "2"]
[White "Munos, Jean Marc Lucien Jo"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1504"]
[BlackElo "2179"]
[PlyCount "58"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. Bg2 0-0 5. d4 d6 6. 0-0 Nc6 7. Nc3 e5 8. e3 a6 9. b3 Bd7 10. Ba3 Re8 11. Rc1 Rb8 12. d5 Ne7 13. c5 Bf5 14. cxd6 cxd6 15. Nd2 b5 16. e4 Bg4 17. Ne2 Qb6 18. h3 Bd7 19. Kh2 Rbc8 20. Rxc8 Rxc8 21. f4 exf4 22. gxf4 Nh5 23. Nf3 b4 24. Bc1 Bb5 25. Rg1 Qf2 26. Re1 Bxe2 27. Rxe2 Rxc1 28. Qxc1 Qxe2 29. Qc7 Nxf4 0-1

[Event "Wch Seniors 50 29th"]
[Site "Bucharest"]
[Date "2019.11.12"]
[Round "1"]
[White "Nikolaidis, Konstantinos"]
[Black "Theuer, Carsten"]
[Result "1/2-1/2"]
[ECO "E90"]
[WhiteElo "2179"]
[BlackElo "1833"]
[PlyCount "70"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ROU"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 Nbd7 6. Nf3 0-0 7. Be3 b6 8. Be2 Bb7 9. Qc2 e5 10. dxe5 Nxe5 11. Nxe5 dxe5 12. 0-0 c6 13. a4 Qe7 14. a5 c5 15. Rfd1 Rfd8 16. Rxd8+ Rxd8 17. Bf3 Bc6 18. Rd1 Rxd1+ 19. Qxd1 bxa5 20. Qa1 Qc7 21. Qa3 Nd7 22. Bg4 Nf6 23. Bf3 Nd7 24. Nd5 Bxd5 25. cxd5 c4 26. Bd2 Bf8 27. Qxa5 Qxa5 28. Bxa5 Nb6 29. Be2 Bc5 30. Bxb6 axb6 31. Bxc4 g5 32. Kf1 Kg7 33. Ke2 f6 34. g4 Kf8 35. f3 Ke7 1/2-1/2

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.10"]
[Round "8"]
[White "Ergazakis, Ioannis"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2270"]
[BlackElo "2168"]
[PlyCount "79"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Re1 Rc8 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4 11. Nbd2 Nxd2 12. Bxd2 a6 13. Qb3 b5 14. a4 b4 15. Rac1 Be7 16. Qd3 Nb8 17. Bg5 h6 18. Rxc8 Qxc8 19. Rc1 Qd7 20. Bxe7 Kxe7 21. Qc2 Qa7 22. Nd2 Nd7 23. Qc6 Qb6 24. Qxb6 Nxb6 25. Rc7+ Kd8 26. Rb7 Nd7 27. Nb3 Kc8 28. Ra7 Rd8 29. Na5 f6 30. f4 g5 31. Rxa6 gxf4 32. Rc6+ Kb8 33. Rxe6 Rf8 34. Re7 Kc8 35. e6 Nb8 36. Nb7 Nc6 37. Nd6+ Kb8 38. Rb7+ Ka8 39. e7 Rg8 40. Rc7 1-0

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.09"]
[Round "7"]
[White "Nikolaidis, Konstantinos"]
[Black "Naboka, Sergey"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "2168"]
[BlackElo "2323"]
[PlyCount "66"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Bg5 Nbd7 5. Qc2 g6 6. e4 fxe4 7. Nxe4 Bg7 8. Ng3 c5 9. Nf3 cxd4 10. Nxd4 Qa5+ 11. Bd2 Qe5+ 12. Nde2 0-0 13. f3 Nb6 14. Rc1 Bd7 15. b3 Rac8 16. Qc3 Qe6 17. Qa5 Bc6 18. h4 Nbd7 19. Kd1 Nc5 20. Nf4 Qf7 21. h5 e5 22. hxg6 hxg6 23. Nh3 e4 24. Be2 exf3 25. gxf3 Rce8 26. Ng5 Qd7 27. Rh2 Qe7 28. Kc2 b6 29. Qa3 Qe5 30. Rg1 Nh5 31. Rxh5 gxh5 32. f4 Qd4 33. Rf1 h4 0-1

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.08"]
[Round "6"]
[White "Loutragotis, Dimitrios"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "2294"]
[BlackElo "2168"]
[PlyCount "88"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. 0-0 Be7 9. f4 0-0 10. f5 e5 11. Nde2 Bb7 12. Ng3 b4 13. Nd5 Nxd5 14. Bxd5 Bxd5 15. Qxd5 Qb6+ 16. Kh1 Nd7 17. Qd3 Rac8 18. Be3 Qc6 19. Rac1 Qc4 20. Qd1 Kh8 21. b3 Qc6 22. Qf3 Rc7 23. Nh5 Nf6 24. Nxf6 Bxf6 25. g4 h6 26. Bd2 Rd8 27. g5 hxg5 28. Bxb4 Qb5 29. c3 a5 30. Ba3 g4 31. Qg2 d5 32. Rfd1 dxe4 33. Rxd8+ Bxd8 34. Qxe4 Rxc3 35. Rd1 Bg5 36. Re1 Bf4 37. f6 Re3 38. Qa8+ Kh7 39. Rg1 Rh3 40. Qe4+ g6 41. Re1 Rxh2+ 42. Kg1 Qb6+ 43. Re3 Re2 44. Qh1+ Bh2+ 0-1

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.06"]
[Round "4"]
[White "Trimitzios, Petros"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "2306"]
[BlackElo "2168"]
[PlyCount "73"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 0-0 5. Bg2 b6 6. c4 Bb7 7. 0-0 d6 8. d4 e6 9. Re1 Qc8 10. Qc2 Be4 11. Qd2 Bb7 12. Nc3 Ne4 13. Qc2 f5 14. Rad1 Nxc3 15. Bxc3 Be4 16. Qb2 Nd7 17. d5 Bxc3 18. Qxc3 e5 19. Bf1 Bxf3 20. exf3 Qd8 21. b4 Qf6 22. Bd3 a5 23. a3 h5 24. Bc2 Kf7 25. Ra1 Qg5 26. h4 Qf6 27. Ba4 Rfd8 28. Bc6 Ra7 29. Rac1 Nb8 30. Bb5 Nd7 31. Qd2 Kg7 32. f4 axb4 33. axb4 e4 34. f3 Ra3 35. Re3 Rxe3 36. Qxe3 exf3 37. Re1 1-0

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.05"]
[Round "2"]
[White "Charkhalashvili, Inga"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E82"]
[WhiteElo "2297"]
[BlackElo "2168"]
[PlyCount "82"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Be3 b6 7. Qd2 c5 8. d5 e6 9. dxe6 fxe6 10. 0-0-0 Nc6 11. Nge2 Ne8 12. Nb5 Ne5 13. Nec3 Nf7 14. h4 a6 15. Na3 Ra7 16. h5 g5 17. h6 Bf6 18. Rh5 Kh8 19. g3 Rg8 20. f4 Qe7 21. Be2 Bxc3 22. Qxc3+ e5 23. Bf3 Nf6 24. Rhh1 gxf4 25. gxf4 Rg3 26. Bf2 Nxe4 27. Qe3 Nxf2 28. Qxf2 exf4 29. Bd5 Qf6 30. Rdf1 Rg4 31. Qf3 b5 32. cxb5 axb5 33. Nxb5 Re7 34. Nc3 Ne5 35. Ne4 Qg6 36. Qb3 Bf5 37. Re1 f3 38. Nf2 Rg2 39. Qb8+ Re8 40. Qc7 Qg5+ 41. Kd1 Rxf2 0-1

[Event "Kavala op 28th"]
[Site "Kavala"]
[Date "2019.08.05"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Kovacevic, Aleksandar"]
[Result "0-1"]
[ECO "E27"]
[WhiteElo "2168"]
[BlackElo "2480"]
[PlyCount "60"]
[EventDate "2019.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 0-0 5. a3 Bxc3+ 6. bxc3 Nc6 7. e4 d6 8. Bd3 e5 9. Ne2 Nd7 10. Be3 Na5 11. Ng3 Nb6 12. Qe2 Be6 13. d5 Bd7 14. 0-0 Na4 15. Rac1 c6 16. f4 f6 17. Nf5 Bxf5 18. exf5 Nb3 19. Rc2 Nbc5 20. Qd1 cxd5 21. cxd5 Rc8 22. c4 Qb6 23. Be2 Qb3 24. Bxc5 Nxc5 25. Rf3 Qb6 26. Kh1 Rfe8 27. Qf1 exf4 28. Rxf4 Qb3 29. Rd2 Qxa3 30. Rf3 Qa5 0-1

[Event "GRE-chT 47th"]
[Site "Patras"]
[Date "2019.07.02"]
[Round "1.5"]
[White "Nikolaidis, Konstantinos"]
[Black "Martinovic, Sasa"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2147"]
[BlackElo "2560"]
[PlyCount "65"]
[EventDate "2019.07.02"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Evoiki ES"]
[BlackTeam "Chania OA"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Be3 e5 7. d5 Na6 8. g4 Nc5 9. f3 h5 10. g5 Nh7 11. h4 f6 12. gxf6 Bxf6 13. Bf2 Be7 14. Kd2 Rf4 15. Qe1 a5 16. Kc2 Nf8 17. Rd1 a4 18. Rd2 Kh7 19. Bd1 Nfd7 20. Nh3 Rf7 21. Be3 Nb6 22. Ng5+ Bxg5 23. Bxg5 Qf8 24. Qf1 c6 25. Rg2 cxd5 26. cxd5 Bd7 27. Kb1 Rc8 28. Bd2 Be8 29. Rhg1 Rf6 30. Bg5 Rf7 31. Bd2 Rf6 32. Bg5 Rf7 33. Bd2 1/2-1/2

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.30"]
[Round "9"]
[White "Obiamiwe, Paul"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "D24"]
[WhiteElo "1903"]
[BlackElo "2167"]
[PlyCount "52"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Nc3 a6 5. a4 Nc6 6. e3 Na5 7. Ne5 Be6 8. Be2 c6 9. 0-0 g6 10. Ra3 Nd7 11. Nxd7 Qxd7 12. Ne4 Nb3 13. Bd2 Bd5 14. Nc5 Nxc5 15. dxc5 e5 16. e4 Bxe4 17. Bxc4 0-0-0 18. Qe2 Qxd2 19. Qxe4 Qd4 20. Qe2 Bxc5 21. Rb3 Rd7 22. Bxa6 bxa6 23. Qxa6+ Kc7 24. Rb7+ Kd6 25. Rb3 Ke7 26. Qxc6 Qxf2+ 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.29"]
[Round "8"]
[White "Nikolaidis, Konstantinos"]
[Black "De Haan, Eric"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2167"]
[BlackElo "2337"]
[PlyCount "66"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 Nf6 8. 0-0-0 Ne5 9. Qg3 b5 10. f3 b4 11. Na4 d6 12. Nb3 Rb8 13. Qf2 Bd7 14. Nb6 Bb5 15. h3 Be7 16. g4 0-0 17. g5 Nfd7 18. Nxd7 Nxd7 19. Kb1 Bxf1 20. Rdxf1 a5 21. h4 a4 22. Nd4 Ne5 23. Bc1 Rfc8 24. h5 Nc4 25. Ka1 d5 26. g6 Bf6 27. gxf7+ Qxf7 28. exd5 exd5 29. Rd1 Qa7 30. Rh2 b3 31. cxb3 axb3 32. Nxb3 Qa4 33. Qe2 Ra8 0-1

[Event "Gibraltar Challengers op-B"]
[Site "Caleta"]
[Date "2019.01.28"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Cramling Bellon, Anna"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2167"]
[BlackElo "2025"]
[PlyCount "86"]
[EventDate "2019.01.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Bxf6 gxf6 11. Nd5 f5 12. c3 Bg7 13. exf5 Bxf5 14. Nc2 Be6 15. g3 0-0 16. Bg2 Rc8 17. 0-0 f5 18. a4 e4 19. axb5 axb5 20. Ra6 Kh8 21. f4 Nb8 22. Ra3 Nd7 23. Nce3 Nc5 24. Qe2 Nd3 25. g4 Bxd5 26. Nxd5 b4 27. cxb4 Nxb4 28. Nxb4 Qb6+ 29. Kh1 Qxb4 30. gxf5 d5 31. Ra7 Qxb2 32. Qxb2 Bxb2 33. Ra5 Rcd8 34. Rd1 e3 35. Raxd5 Rxd5 36. Bxd5 Rxf5 37. Bf3 Rxf4 38. Kg2 Bc3 39. Rd8+ Kg7 40. Rd7+ Kh6 41. Rd6+ Kg5 42. Rd5+ Kh6 43. Kh1 Rf8 1/2-1/2

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.28"]
[Round "7"]
[White "Tate, Alan"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2335"]
[BlackElo "2167"]
[PlyCount "65"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. 0-0 Be7 5. c4 0-0 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Bd5 11. Qc2 Be4 12. Qc1 h6 13. Bxf6 Bxf6 14. Nbd2 Bxf3 15. Nxf3 a5 16. Rd1 c6 17. h4 Na6 18. e4 Nb4 19. e5 Be7 20. Qf4 Ra6 21. Nh2 Nd5 22. Qg4 Rb6 23. Rd2 Qd7 24. Qh5 Rd8 25. Ng4 Bf8 26. Ne3 Rb4 27. Qe2 Nb6 28. Rad1 Rxa4 29. Be4 Bb4 30. Rd3 Bf8 31. R3d2 Bb4 32. Rd3 Bf8 33. R3d2 1/2-1/2

[Event "Gibraltar Challengers op-B"]
[Site "Caleta"]
[Date "2019.01.27"]
[Round "2"]
[White "Garcia Lopez, Juan Antonio"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B55"]
[WhiteElo "1964"]
[BlackElo "2167"]
[PlyCount "138"]
[EventDate "2019.01.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 g6 6. c4 Bg7 7. Nc3 Nc6 8. Nc2 Bd7 9. 0-0 0-0 10. h3 Ne5 11. f4 Nxd3 12. Qxd3 Bc6 13. Rb1 b6 14. Nd4 Bb7 15. Be3 a6 16. Nd5 Nd7 17. b4 Rc8 18. Rfc1 e6 19. Nc3 Ne5 20. fxe5 dxe5 21. Rd1 exd4 22. Bxd4 e5 23. Bf2 Qxd3 24. Rxd3 Rxc4 25. Bxb6 f5 26. Nd5 Rxe4 27. Ne7+ Kh8 28. Rd7 Ba8 29. Rc1 Rxb4 30. Nc8 e4 31. Rcc7 Be5 32. Rxh7+ Kg8 33. Bc5 Rb1+ 34. Kf2 Rb2+ 35. Kf1 Rb1+ 36. Kf2 Rb2+ 37. Kf1 Bxc7 38. Rxc7 Rb7 39. Rxb7 Bxb7 40. Bxf8 Kxf8 41. Nb6 Ke7 42. Kf2 Kd6 43. Ke3 g5 44. g3 Bd5 45. a3 Bb3 46. Kd4 Kc7 47. Nc4 Bxc4 48. Kxc4 f4 49. gxf4 gxf4 50. Kd4 e3 51. Kd3 Kd6 52. Ke2 Ke5 53. Kf3 Kf5 54. a4 Kg5 55. Kg2 a5 56. Kf3 Kh4 57. Kg2 e2 58. Kf2 f3 59. Ke1 Kxh3 60. Kf2 Kh2 61. Ke1 Kg1 62. Kd2 Kf1 63. Ke3 f2 64. Kd4 e1Q 65. Kc5 Kg2 66. Kd5 f1Q 67. Kd6 Qc4 68. Kd7 Qee6+ 69. Kd8 Qcc8# 0-1

[Event "Gibraltar Challengers op-B"]
[Site "Caleta"]
[Date "2019.01.26"]
[Round "1"]
[White "Nikolaidis, Konstantinos"]
[Black "Skutta, Bernd"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "2167"]
[BlackElo "1988"]
[PlyCount "74"]
[EventDate "2019.01.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 c6 5. c4 Nbd7 6. Nbc3 Be7 7. Be3 0-0 8. Qd2 a6 9. d5 cxd5 10. cxd5 Nh5 11. 0-0-0 b5 12. g4 Nhf6 13. Ng3 Nb6 14. b3 b4 15. Nce2 Bxg4 16. fxg4 Nxg4 17. Nf5 Bf6 18. Kb1 Nxe3 19. Qxe3 a5 20. Rg1 Kh8 21. Nc1 a4 22. Bb5 axb3 23. axb3 Ra3 24. Rd2 Qc7 25. Ra2 Rc8 26. Rgg2 Rxa2 27. Nxa2 g6 28. Nh6 Bg7 29. Bc6 Qa7 30. Rf2 Bxh6 31. Qxh6 Nxd5 32. Rc2 Ne3 33. Rc1 Qd4 34. Bb7 Qd3+ 35. Ka1 Qd4+ 36. Kb1 Qd3+ 37. Ka1 Qd4+ 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.25"]
[Round "4"]
[White "Nikolaidis, Konstantinos"]
[Black "Hoolt, Sarah"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2167"]
[BlackElo "2358"]
[PlyCount "94"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 Nbd7 5. h3 c6 6. g4 b5 7. a3 Bb7 8. Bg2 Nb6 9. 0-0 Be7 10. Ng3 g6 11. Bh6 Nfd7 12. dxe5 dxe5 13. Qc1 Qc7 14. a4 b4 15. Nb1 Nc5 16. b3 Ba6 17. Rd1 Ne6 18. Bf1 Bxf1 19. Rxf1 Nf4 20. Kh2 Bf8 21. Bxf8 Kxf8 22. Qe3 h5 23. g5 Qe7 24. Ne2 Nxe2 25. Qxe2 Qxg5 26. a5 Nd7 27. Qc4 Qf4+ 28. Kg2 c5 29. Rd1 Rd8 30. Rd3 Kg7 31. Nd2 Nf6 32. Re1 Rd4 33. Rxd4 cxd4 34. Nf3 Re8 35. Qc6 Re6 36. Qb7 a6 37. Re2 Ng4 38. Ng1 Nf6 39. f3 h4 40. Qxb4 Nh5 41. Qe1 Rc6 42. Qd2 Rc3 43. Rf2 Qg3+ 44. Kf1 Nf4 45. Rh2 Qg5 46. Qc1 Qd8 47. Qa1 Qc8 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.24"]
[Round "3"]
[White "Munoz, Raul"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2040"]
[BlackElo "2167"]
[PlyCount "118"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bg4 6. Be2 e6 7. Be3 Nge7 8. 0-0 Nf5 9. Nbd2 h6 10. Nb3 c4 11. Nbd2 b5 12. h3 Bh5 13. Ne1 Bg6 14. Bf4 Be7 15. g4 Nh4 16. Bg3 Qb6 17. Ng2 Nxg2 18. Kxg2 f6 19. f4 fxe5 20. f5 Bf7 21. dxe5 0-0-0 22. b3 Bg5 23. Nf3 Be3 24. Qc2 Ne7 25. a4 a6 26. Rfb1 Qc6 27. axb5 axb5 28. Nd4 Bxd4 29. cxd4 Rd7 30. Bf3 Rc7 31. bxc4 bxc4 32. h4 Kd7 33. f6 Bg6 34. Qc1 Bxb1 35. Rxb1 Nc8 36. fxg7 Rg8 37. Qxh6 Rb7 38. Rxb7+ Qxb7 39. Bd1 Qa7 40. h5 Qa2+ 41. Kh3 Qa1 42. Qh7 Ne7 43. Bc2 Qh1+ 44. Bh2 Ra8 45. g8Q Rxg8 46. Ba4+ Kd8 47. Qf7 Qa1 48. Qxe6 Qxa4 49. Qb6+ Ke8 50. Qb8+ Kf7 51. Qd6 Qb3+ 52. Kh4 Rxg4+ 53. Kxg4 Qd1+ 54. Kh3 Qxh5+ 55. Kg2 Qe2+ 56. Kh3 Qf3+ 57. Bg3 Qxg3+ 58. Kxg3 Nf5+ 59. Kf2 Nxd6 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.23"]
[Round "2"]
[White "Nikolaidis, Konstantinos"]
[Black "Lombaers, Peter"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2167"]
[BlackElo "2372"]
[PlyCount "96"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 d6 8. 0-0-0 Bd7 9. Nxc6 bxc6 10. g4 e5 11. g5 Be6 12. Bh3 Bxh3 13. Qxh3 Ne7 14. Rd3 Ng6 15. Qg4 Be7 16. h4 Qa5 17. Qf5 Qd8 18. h5 Nf4 19. Bxf4 exf4 20. Rg1 0-0 21. e5 d5 22. g6 h6 23. gxf7+ Rxf7 24. Qg6 Bg5 25. Qxc6 f3+ 26. Kb1 Rb8 27. Rxd5 Qe7 28. Rgd1 Rf5 29. Qc4 Kh8 30. Qe4 Rf4 31. Qd3 Qe8 32. Qxa6 Qxh5 33. Rb5 Re8 34. a4 Bh4 35. Qb6 Rf5 36. e6 Rxb5 37. Nxb5 Qe5 38. Nd6 Qxe6 39. a5 Qe2 40. Nf7+ Kh7 41. Rh1 Re6 42. Qb8 Qxf2 43. Qh8+ Kg6 44. Qg8 Re1+ 45. Rxe1 Qxe1+ 46. Ka2 Qxa5+ 47. Kb1 Qe1+ 48. Ka2 Qe6+ 0-1

[Event "Gibraltar Masters 17th"]
[Site "Caleta"]
[Date "2019.01.22"]
[Round "1"]
[White "Ubilava, Elizbar"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "2495"]
[BlackElo "2167"]
[PlyCount "63"]
[EventDate "2019.01.22"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "GGB"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nge2 Re8 6. a3 Bf8 7. Ng3 d5 8. cxd5 exd5 9. b4 c6 10. Bd3 b5 11. 0-0 a5 12. bxa5 Rxa5 13. Bb2 Bd6 14. Qc2 Ra7 15. e4 dxe4 16. Ncxe4 Nxe4 17. Bxe4 g6 18. Bxc6 Nxc6 19. Qxc6 Rc7 20. Qf3 Bb7 21. d5 Be5 22. Bxe5 Rxe5 23. Rad1 Rc4 24. Qb3 Rxd5 25. Qxb5 Rxd1 26. Qxc4 Rd4 27. Qb5 Qa8 28. Re1 Bc6 29. Qg5 Rd5 30. Qf6 Ra5 31. Re7 Bd5 32. Rd7 1-0

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.15"]
[Round "7.12"]
[White "Tomici, Stefan"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2369"]
[BlackElo "2182"]
[PlyCount "91"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "3 Stars 89"]
[BlackTeam "Evoiki EV"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. e3 b6 9. Qe2 Bb7 10. Nc3 Qd7 11. cxd5 exd5 12. d4 Rad8 13. Rfd1 Qe6 14. Rac1 Nb4 15. Ne5 Nd7 16. Nxd7 Rxd7 17. Qd2 Rfd8 18. a3 Nc6 19. Ne2 cxd4 20. exd4 Bd6 21. b4 Ne7 22. Re1 Qf6 23. Qd3 Rc7 24. Rxc7 Bxc7 25. Bc1 Nf5 26. Rd1 Re8 27. Bf4 Bxf4 28. Nxf4 Rd8 29. Qc3 Rc8 30. Qd3 Rd8 31. Bh3 Nd6 32. Re1 g6 33. Bg2 Ne4 34. Rc1 Rd7 35. Rc2 Qd6 36. f3 Nf6 37. Kf2 Rc7 38. Ne2 h5 39. Rxc7 Qxc7 40. Qc3 Qd7 41. Nf4 Kg7 42. Bh3 Qd8 43. Bf1 Qd7 44. Qe3 Qc7 45. Be2 Qd6 46. Bd3 1/2-1/2

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.14"]
[Round "6.13"]
[White "Skalkotas, Nikolaos"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E46"]
[WhiteElo "2044"]
[BlackElo "2182"]
[PlyCount "66"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Panellinios GA"]
[BlackTeam "Evoiki EV"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nge2 c6 6. a3 Ba5 7. b4 Bc7 8. e4 d5 9. e5 Ne8 10. c5 b6 11. g3 f6 12. f4 Ba6 13. Bh3 Qe7 14. 0-0 Bc4 15. Be3 g6 16. Re1 Ng7 17. exf6 Qxf6 18. Qd2 Nd7 19. Kh1 Nf5 20. Ng1 bxc5 21. bxc5 Ba5 22. Rac1 Rab8 23. Bf2 Rb3 24. Nf3 Nxc5 25. Ne5 Na4 26. Nxc4 dxc4 27. Qe2 Rxc3 28. Rxc3 Bxc3 29. Rc1 Bxd4 30. Rxc4 Bxf2 31. Qxf2 Qa1+ 32. Bf1 Nb6 33. Re4 Nd5 0-1

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.13"]
[Round "5.15"]
[White "Nikolaidis, Konstantinos"]
[Black "Istratescu, Andrei"]
[Result "0-1"]
[ECO "B60"]
[WhiteElo "2182"]
[BlackElo "2575"]
[PlyCount "134"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Evoiki EV"]
[BlackTeam "Kalamata Poseidon"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Be2 Rg8 9. g3 Nxd4 10. Qxd4 Bd7 11. b4 Qe5 12. Qxe5 fxe5 13. 0-0-0 Rc8 14. Kb2 f5 15. Bd3 Bg7 16. f3 Rf8 17. Rhf1 h5 18. Kb3 Kd8 19. Bc4 Rh8 20. Bd3 h4 21. Rg1 hxg3 22. hxg3 Be6+ 23. Kb2 Rh3 24. Bf1 Rh2 25. Rg2 Rxg2 26. Bxg2 fxe4 27. fxe4 Kd7 28. Rh1 Rh8 29. Rxh8 Bxh8 30. Bf3 Bf6 31. a3 Bg5 32. Nd5 Bh3 33. c4 e6 34. Nc3 Bf1 35. Kb3 Be3 36. Nd1 Bd4 37. Nc3 Ke7 38. Ne2 Bf2 39. Kc3 Be1+ 40. Kc2 Kf6 41. Kd1 Bf2 42. Kd2 Kg5 43. Kd1 a6 44. Kd2 Bh3 45. a4 b6 46. Kd3 Bf1 47. Kd2 a5 48. b5 Bh3 49. Kd3 Be1 50. Ke3 Bf1 51. Bh1 Kg4 52. Bf3+ Kh3 53. Bh5 Bxg3 54. Bf7 Kg2 55. Nxg3 Kxg3 56. Bxe6 Bg2 57. Bd5 Bf3 58. c5 dxc5 59. Bb3 Bg4 60. Bc2 Be6 61. Bd1 Ba2 62. Bc2 c4 63. Bd1 Bb3 64. Be2 c3 65. Bd3 Bxa4 66. Be2 Bb3 67. Kd3 Bc4+ 0-1

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.12"]
[Round "4.12"]
[White "Barski, Radoslaw"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2431"]
[BlackElo "2182"]
[PlyCount "53"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Chania Kaissa"]
[BlackTeam "Evoiki EV"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Bc5 5. 0-0 0-0 6. c3 d6 7. Bb3 h6 8. Re1 a6 9. h3 Re8 10. Nbd2 Be6 11. Nf1 d5 12. Qe2 d4 13. Ng3 Qd7 14. Bxe6 Rxe6 15. b4 Bb6 16. Bd2 dxc3 17. Bxc3 Rd8 18. Red1 Nh7 19. Nf5 Ng5 20. Nxg5 hxg5 21. Qg4 f6 22. h4 g6 23. Nh6+ Kh7 24. hxg5 Rd6 25. gxf6 Bxf2+ 26. Kxf2 Rxf6+ 27. Nf5 1-0

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.11"]
[Round "3.10"]
[White "Nikolaidis, Konstantinos"]
[Black "Gouloutis, Nikolaos"]
[Result "0-1"]
[ECO "E16"]
[WhiteElo "2182"]
[BlackElo "2382"]
[PlyCount "80"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Evoiki EV"]
[BlackTeam "My Mountains"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. g3 Bb7 6. Bg2 0-0 7. 0-0 a5 8. Qc2 Bxd2 9. Bxd2 Be4 10. Qc1 d6 11. Bc3 Nbd7 12. Qe3 Qb8 13. Bh3 b5 14. b3 bxc4 15. bxc4 Qa7 16. Nd2 Bg6 17. Bg2 Rae8 18. Bc6 Qa6 19. Bb5 Qa8 20. Ba4 c6 21. Qf3 d5 22. c5 Qa6 23. Rfe1 e5 24. e3 Re6 25. dxe5 Nxe5 26. Bxe5 Rxe5 27. Qf4 Rfe8 28. Qd4 h5 29. Rac1 h4 30. Bc2 Be4 31. f3 hxg3 32. hxg3 Qc8 33. fxe4 Qh3 34. Nf1 Rh5 35. Bd1 Qh1+ 36. Kf2 Rh2+ 37. Nxh2 Qxh2+ 38. Kf1 Nxe4 39. Qxe4 Rxe4 40. Rb1 Re6 0-1

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.11"]
[Round "2.17"]
[White "Tzintzios, Georgios"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "2186"]
[BlackElo "2182"]
[PlyCount "125"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Larissa"]
[BlackTeam "Evoiki EV"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3 e6 7. Nf4 Bd6 8. Nfh5 Bxh5 9. Nxh5 g6 10. Ng3 Nf6 11. Bh6 Nbd7 12. Qd2 Qc7 13. Be2 0-0-0 14. 0-0-0 e5 15. Kb1 Rhe8 16. Bc4 Nb6 17. Bb3 Ng4 18. Bg5 f6 19. dxe5 Bxe5 20. Qe2 Nxf2 21. Rxd8+ Qxd8 22. Qxf2 fxg5 23. Re1 Bf4 24. a4 Kb8 25. Rxe8 Qxe8 26. Qd4 Qd7 27. Qf6 Nd5 28. Qf8+ Kc7 29. Qc5 Qe7 30. Qa5+ Nb6 31. Ka2 Kb8 32. Qc3 Be5 33. Qe3 Nd5 34. Bxd5 cxd5 35. Ne2 a6 36. g3 Qf6 37. c3 h6 38. Kb3 Bc7 39. Qe8+ Ka7 40. Nd4 Bb6 41. Ne6 Qf2 42. Qd7 Qf3 43. Ka2 Qf5 44. Qd6 Qe4 45. Qd7 Qc4+ 46. Ka1 Qf1+ 47. Ka2 Qc4+ 48. Ka1 Qc6 49. Qxc6 bxc6 50. Nf8 g4 51. Nxg6 Bg1 52. Nf4 Bxh2 53. Ne2 h5 54. Kb1 Kb6 55. Kc2 Ka5 56. b3 c5 57. Kd3 c4+ 58. Kc2 cxb3+ 59. Kxb3 Kb6 60. Kc2 Ka5 61. Kb3 Kb6 62. Kc2 Ka5 63. Kb3 1/2-1/2

[Event "GRE-chT 46th"]
[Site "Rio Achaia"]
[Date "2018.07.10"]
[Round "1.9"]
[White "Nikolaidis, Konstantinos"]
[Black "Shoker, Samy"]
[Result "0-1"]
[ECO "E68"]
[WhiteElo "2182"]
[BlackElo "2482"]
[PlyCount "108"]
[EventDate "2018.07.10"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]
[WhiteTeam "Evoiki EV"]
[BlackTeam "Heraklion Attica"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "GRE"]

1. d4 g6 2. Nf3 Bg7 3. g3 Nf6 4. Bg2 0-0 5. 0-0 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Re8 10. h3 a6 11. Qc2 Rb8 12. Rd1 Qe7 13. Bf4 Nc5 14. Rd2 h6 15. Nd5 Nxd5 16. exd5 Bd7 17. Rad1 Qf6 18. Re2 Rxe2 19. Qxe2 Re8 20. Qc2 Qe7 21. b3 Qf8 22. Bc1 Re7 23. Bb2 Qe8 24. Bc3 Ne4 25. Bb2 Ng5 26. Kh2 h5 27. Nf3 Nxf3+ 28. Bxf3 Bxb2 29. Qxb2 Re5 30. Qd4 Qe7 31. Rd3 Bf5 32. Rc3 Be4 33. Bxe4 Rxe4 34. Re3 Rxe3 35. fxe3 a5 36. a3 Qd7 37. Qf6 Qe8 38. Qd4 b6 39. Kg2 Qe7 40. Kf2 Qd7 41. Kg2 Qf5 42. e4 Qg5 43. h4 Qc1 44. e5 Qc2+ 45. Kh1 Qxb3 46. e6 Qf3+ 47. Kh2 fxe6 48. dxe6 Qe2+ 49. Kg1 Qxe6 50. Kh2 Qe2+ 51. Kg1 Qe5 52. Qd3 Kg7 53. Kg2 c6 54. Kh2 g5 0-1

[Event "Athens Iraklion op 21st"]
[Site "Athens"]
[Date "2018.06.18"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Lekic, Dusan"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2175"]
[BlackElo "2368"]
[PlyCount "49"]
[EventDate "2018.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 Be7 10. Nxg6 hxg6 11. g3 Nbd7 12. Rc1 Nb6 13. cxd5 exd5 14. Be2 a5 15. a3 a4 16. Qc2 Bd6 17. f4 Qd7 18. Nd1 g5 19. Nf2 gxf4 20. exf4 Kf8 21. Nd1 Ne4 22. Nf2 Ke8 23. 0-0 Qe7 24. Nxe4 dxe4 25. Bg4 1/2-1/2

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.28"]
[Round "11"]
[White "Nikolaidis, Konstantinos"]
[Black "Naqopia, Giorgi"]
[Result "1/2-1/2"]
[ECO "D15"]
[WhiteElo "2184"]
[BlackElo "1849"]
[PlyCount "98"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 a6 5. Nf3 Bf5 6. Bd3 Bxd3 7. Qxd3 e6 8. 0-0 Be7 9. Rd1 dxc4 10. Qxc4 b5 11. Qe2 0-0 12. e4 b4 13. Na4 Qa5 14. b3 Qb5 15. Qe1 Rd8 16. Bf4 Nbd7 17. Rac1 Rac8 18. Rc4 Nb6 19. Nxb6 Qxb6 20. Rdc1 Qa5 21. a4 Qb6 22. h3 Qb7 23. R1c2 h6 24. Ne5 Bd6 25. Rxc6 Bxe5 26. Rxc8 Rxc8 27. Rxc8+ Qxc8 28. dxe5 Qb8 29. Qe3 Nd7 30. Qd4 Qb7 31. Be3 a5 32. Qd6 Qc8 33. g3 Nb8 34. Qc5 Nc6 35. Qd6 Qb7 36. Bc5 Kh7 37. Kh2 Kg8 38. Kg1 Kh7 39. h4 Kg8 40. Kh2 Kh7 41. Kg1 Kg8 42. f3 Kh7 43. Kf2 Kg8 44. h5 Kh7 45. Ke3 Kg8 46. f4 Qa6 47. Kf2 Qc8 48. Ke3 Qa6 49. Qd3 Qb7 1/2-1/2

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.27"]
[Round "10"]
[White "Belous, Mikhail"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "E82"]
[WhiteElo "2355"]
[BlackElo "2184"]
[PlyCount "87"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Be3 b6 7. Nge2 c5 8. d5 e6 9. Ng3 exd5 10. cxd5 a6 11. a4 Nbd7 12. Be2 h5 13. 0-0 Nh7 14. Qd2 h4 15. Nh1 f5 16. exf5 gxf5 17. Nf2 Ne5 18. Nh3 Ng6 19. Rfe1 Ra7 20. Bd3 Re7 21. Bf2 Ref7 22. Ne2 Be5 23. Nef4 Nxf4 24. Nxf4 Qf6 25. Rab1 Kh8 26. Ne6 Bxe6 27. dxe6 Rg7 28. f4 Qh6 29. Be3 Bd4 30. Bxd4 cxd4 31. Bxa6 Nf6 32. e7 Rfg8 33. Bb5 Rxg2+ 34. Qxg2 Rxg2+ 35. Kxg2 Qxf4 36. e8Q+ Nxe8 37. Rxe8+ Kh7 38. Rf1 h3+ 39. Kh1 Qg4 40. Re2 f4 41. Bd3+ Kh6 42. Ref2 d5 43. Rg1 Qh4 44. Rf3 1-0

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.26"]
[Round "9"]
[White "Nikolaidis, Konstantinos"]
[Black "Suleymanli, Suleyman"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2184"]
[BlackElo "1763"]
[PlyCount "71"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. e5 Nfd7 5. c3 c5 6. Ne2 Nc6 7. Nd2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. 0-0 Bd6 11. Nf3 0-0 12. Bf4 Bxf4 13. Nxf4 Qd6 14. g3 Bd7 15. Re1 Nxd4 16. Bxh7+ Nxh7 17. Qxd4 Rae8 18. Ne5 Ng5 19. Kg2 Rf5 20. Nfg6 Bc6 21. Rac1 a6 22. Rc3 Nf7 23. Nxf7 Kxf7 24. Ne5+ Kg8 25. h4 Ref8 26. f4 Rc8 27. Rec1 Rff8 28. Ng6 Rfe8 29. h5 Kh7 30. Ne5 Re7 31. Rh1 a5 32. Qd3+ Kg8 33. h6 d4+ 34. Rxc6 Qd5+ 35. Kg1 Qxh1+ 36. Kxh1 1-0

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.25"]
[Round "8"]
[White "Baglan, Esat"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2341"]
[BlackElo "2184"]
[PlyCount "137"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Nc6 6. Nf3 Bxc5 7. b4 Bb6 8. Bb2 Nge7 9. Bd3 Ng6 10. 0-0 Nf4 11. c4 0-0 12. Nc3 a6 13. Re1 Ne7 14. Bf1 dxc4 15. Bxc4 Bd7 16. Ne4 Bc6 17. Nd4 Bd5 18. Bf1 Nfg6 19. Qh5 Bxd4 20. Bxd4 Bxe4 21. Rxe4 Qd5 22. Qe2 Rfd8 23. g3 Nc6 24. Bb6 Rd7 25. f4 Nge7 26. Bg2 Qb3 27. Qf3 Rd3 28. Re3 Rad8 29. Bf1 Rxe3 30. Qxe3 Qxe3+ 31. Bxe3 Nf5 32. Kf2 f6 33. exf6 gxf6 34. Rc1 Rd6 35. Bg2 Nfe7 36. a4 Rd7 37. b5 axb5 38. axb5 Nb4 39. Ra1 Ned5 40. Ra8+ Kf7 41. Be4 f5 42. Bf3 Nd3+ 43. Ke2 Nc3+ 44. Kf1 Nxb5 45. Rh8 Kg6 46. Rb8 Nd6 47. Bd4 Nc4 48. Rg8+ Kf7 49. Rg7+ Ke8 50. Rxd7 Kxd7 51. Bxb7 Nd6 52. Bf3 Nb4 53. Kg2 Nd5 54. Kf2 Nb5 55. Bb2 Nbc3 56. Ke1 Ne4 57. Ke2 Nef6 58. Bd4 Kd6 59. Kd3 Nd7 60. Kc4 N7b6+ 61. Kb5 Nd7 62. Bf2 e5 63. fxe5+ Nxe5 64. Bg2 Ng4 65. Bg1 Nc3+ 66. Kc4 Ne2 67. Bc5+ Ke6 68. Kd3 Nc1+ 69. Kc2 1-0

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.24"]
[Round "7"]
[White "Nikolaidis, Konstantinos"]
[Black "Ozen, Deniz"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2184"]
[BlackElo "2407"]
[PlyCount "92"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. dxc5 Bxc5 6. Ngf3 Nf6 7. Bc4 Qc6 8. 0-0 0-0 9. Qe2 a6 10. Nb3 b5 11. Bd3 Nbd7 12. Bf4 Bd6 13. Bxd6 Qxd6 14. Rfd1 Qf4 15. Qd2 Qc7 16. a4 Bb7 17. axb5 Bxf3 18. gxf3 Ne5 19. Qf4 Nd5 20. b6 Qb8 21. Qg3 Nxd3 22. Rxd3 Qxb6 23. Ra4 Rac8 24. Rg4 g6 25. c4 Ne7 26. Qe5 Rcd8 27. Qc5 Qxc5 28. Nxc5 Rxd3 29. Nxd3 Rd8 30. Nc5 f5 31. Rh4 Rd6 32. Kg2 e5 33. b3 f4 34. Rg4 Rd1 35. Nxa6 Kg7 36. Kh3 h5 37. Rg2 Rd3 38. Rg1 Rxf3+ 39. Kg2 Rxb3 40. Re1 Nc6 41. Nc5 Rc3 42. Nd7 f3+ 43. Kg3 Nd4 44. Nxe5 Ne2+ 45. Kh3 Kf6 46. Nd7+ Kg5 0-1

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.22"]
[Round "6"]
[White "Gharibyan, Mamikon"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "2312"]
[BlackElo "2184"]
[PlyCount "104"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. h3 e5 7. d5 Nh5 8. g3 Na6 9. Nh2 Qe8 10. Qc2 f5 11. Bg2 Nc5 12. Be3 b6 13. Bxc5 bxc5 14. 0-0-0 Bd7 15. Kb1 Rb8 16. Nf3 Rb4 17. Nd2 Bh6 18. a3 Rb6 19. Rhe1 Qc8 20. Ka2 Qb7 21. Rb1 Rb8 22. Bf1 Nf6 23. Bd3 Bxd2 24. Qxd2 fxe4 25. Bf1 a6 26. Re3 Rb3 27. Qc2 Kg7 28. g4 Qb6 29. Bg2 Be8 30. Rg3 Bd7 31. Bf1 Be8 32. h4 Bd7 33. Be2 Qb7 34. Qd2 e3 35. Rxe3 Bxg4 36. Bxg4 Nxg4 37. Re4 Nh6 38. f4 Nf7 39. h5 Qc8 40. h6+ Kg8 41. fxe5 dxe5 42. Re2 Qh3 43. Ne4 Nd6 44. Nf6+ Kh8 45. Qc2 Re3 46. Rbe1 Reb3 47. Qc1 e4 48. Re3 Rxb2+ 49. Qxb2 Rxb2+ 50. Kxb2 Nxc4+ 51. Ka2 Nxe3 52. Rb1 Qxh6 0-1

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.21"]
[Round "5"]
[White "Nikolaidis, Konstantinos"]
[Black "Yeremyan, Alen"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2184"]
[BlackElo "1961"]
[PlyCount "120"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 h6 7. Be3 c5 8. d5 e6 9. Qd2 exd5 10. cxd5 Kh7 11. Nge2 Nbd7 12. Nc1 Ne5 13. Be2 Bd7 14. a4 a6 15. 0-0 Qa5 16. Ra3 Qc7 17. Kh1 Rae8 18. Ra1 g5 19. a5 Nh5 20. g3 f5 21. exf5 Bxf5 22. g4 Bxg4 23. fxg4 Rxf1+ 24. Bxf1 Nxg4 25. Bg1 Qf7 26. Bh3 Ne5 27. Qc2+ Kh8 28. Qf5 Qg8 29. N1e2 Nf6 30. Rd1 Nc4 31. Qg6 Qh7 32. Qxh7+ Nxh7 33. Be6 Nf8 34. Bg4 Nxa5 35. Ng3 Nc4 36. Nce4 Nxb2 37. Nxd6 Re7 38. Ngf5 Rd7 39. Nxg7 Rxd6 40. Nf5 Nxd1 41. Nxd6 Nc3 42. Bf3 b6 43. Nc8 g4 44. Bg2 Nd7 45. d6 Kg7 46. Bc6 Ne5 47. Be8 Nd5 48. d7 Nc6 49. Bf2 a5 50. Na7 Nd8 51. Bh4 Nf6 52. Nb5 Nc6 53. Nd6 Nxd7 54. Bxd7 Ne5 55. Bb5 Nf3 56. Bd8 Nd4 57. Ba4 c4 58. Bxb6 Ne2 59. Nxc4 g3 60. Bd1 Nf4 1-0

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.20"]
[Round "4"]
[White "Danielian, Elina"]
[Black "Nikolaidis, Konstantinos"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2413"]
[BlackElo "2184"]
[PlyCount "51"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. e5 Nfd7 7. Bc4 Nb6 8. Bd3 N8d7 9. Be3 c5 10. Qe2 Qc7 11. Nb5 Qb8 12. c4 a6 13. Nc3 cxd4 14. Bxd4 Nc5 15. Bxc5 dxc5 16. h4 Bg4 17. h5 Rd8 18. hxg6 hxg6 19. Rh4 Qc8 20. 0-0-0 Bf5 21. g4 Bxd3 22. Rxd3 Qe6 23. b3 f6 24. Ne4 fxe5 25. Nfg5 Qc6 26. Qh2 1-0

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.19"]
[Round "3"]
[White "Nikolaidis, Konstantinos"]
[Black "Janik, Igor"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2184"]
[BlackElo "2422"]
[PlyCount "86"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Bd3 Nc6 4. c3 e5 5. d5 Ne7 6. c4 g6 7. Nc3 Bg7 8. Nge2 0-0 9. f3 Nd7 10. Be3 f5 11. Qd2 c6 12. 0-0-0 cxd5 13. cxd5 a6 14. Kb1 b5 15. Rc1 Nf6 16. h3 Bd7 17. g4 Rf7 18. gxf5 gxf5 19. Rcg1 f4 20. Bf2 Kh8 21. Rg2 Bh6 22. h4 Nh5 23. Rhg1 Qc7 24. Nc1 Rg7 25. Rxg7 Bxg7 26. N3e2 Bf6 27. Nb3 Ng6 28. Rc1 Qd8 29. Qb4 Be8 30. Na5 Qe7 31. Nc6 Qd7 32. Rh1 Ne7 33. Rc1 Ng7 34. a4 bxa4 35. Nb8 Qd8 36. Nc6 Qd7 37. Nb8 Qh3 38. Qxd6 Qxf3 39. Qxf6 Qxd3+ 40. Rc2 Rxb8 41. Qxe7 Bg6 42. Nc3 a3 43. Bb6 a2+ 0-1

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.18"]
[Round "2"]
[White "Perunovic, Miodrag"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2429"]
[BlackElo "2184"]
[PlyCount "99"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qc2 Bb7 6. Bg2 c5 7. d5 exd5 8. cxd5 Nxd5 9. 0-0 Be7 10. Qe4 Bc6 11. Ne5 Nf6 12. Nxc6 Nxc6 13. Qa4 0-0 14. Rd1 Qc8 15. Nc3 a6 16. Bg5 h6 17. Bxf6 Bxf6 18. Nd5 Bd8 19. Qe4 Ra7 20. Rac1 Qb8 21. e3 Qe5 22. Qb1 Ne7 23. Nf4 d6 24. Rc4 d5 25. Bxd5 Nxd5 26. Rxd5 Qf6 27. Nh5 Qe6 28. Qd1 Bf6 29. b3 Raa8 30. Rg4 Kh8 31. Nf4 Qe7 32. Rh5 Rad8 33. Qf3 Be5 34. Qe4 Rfe8 35. Nh3 Bb8 36. Qf3 Rd6 37. Rf5 Rd7 38. Kg2 Kh7 39. Rh4 Kh8 40. Ng5 f6 41. Ne4 Rf8 42. Rfh5 Qe6 43. g4 Kg8 44. Rf5 Rdd8 45. Rfh5 Rd7 46. Rh3 Re8 47. Nc3 Be5 48. Ne4 Bb8 49. Ng3 Bxg3 50. Rxg3 1/2-1/2

[Event "EU-ch 19th"]
[Site "Batumi"]
[Date "2018.03.17"]
[Round "1"]
[White "Nikolaidis, Konstantinos"]
[Black "Palac, Mladen"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2184"]
[BlackElo "2546"]
[PlyCount "60"]
[EventDate "2018.03.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 184"]
[Source "ChessBase"]
[SourceDate "2018.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2018.05.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. c4 Nf6 8. Bg5 e6 9. Nc3 Bc6 10. 0-0 h6 11. Bh4 Be7 12. Rfd1 0-0 13. Bg3 Qa5 14. Rab1 Rfd8 15. b4 Qh5 16. a4 Rac8 17. b5 Be8 18. Rbc1 Qc5 19. Qxc5 Rxc5 20. Nd2 Nh5 21. Ne2 Nxg3 22. hxg3 axb5 23. axb5 d5 24. cxd5 Rxc1 25. Rxc1 Bxb5 26. Nc3 Ba6 27. Nb3 Rc8 28. Na2 Rxc1+ 29. Naxc1 exd5 30. exd5 Bc4 0-1

[Event "Wch Seniors 50 27th"]
[Site "Acqui Terme"]
[Date "2017.11.08"]
[Round "2"]
[White "Nikolaidis, Konstantinos"]
[Black "Sturua, Zurab"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2225"]
[BlackElo "2536"]
[PlyCount "74"]
[EventDate "2017.11.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ITA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nc6 7. e5 dxe5 8. fxe5 Nd5 9. Nxd5 Qxd5 10. c3 f6 11. Qe2 Kh8 12. Bc4 Qd7 13. 0-0 fxe5 14. dxe5 Qg4 15. Bd2 Be6 16. Bxe6 Qxe6 17. Ng5 Qd5 18. e6 Kg8 19. Rad1 Rf6 20. Bc1 Qxa2 21. Qe4 Raf8 22. Rxf6 exf6 23. Nf7 f5 24. Qh4 Re8 25. Re1 Qd5 26. Nh6+ Bxh6 27. Bxh6 Rxe6 28. h3 Rxe1+ 29. Qxe1 Kf7 30. Bf4 Nd8 31. Qh4 h5 32. Kh2 Ne6 33. Bh6 Qe5+ 34. Kh1 b6 35. Kg1 a5 36. Kh1 f4 37. Kg1 Qf6 0-1

[Event "Nikaia op 25th"]
[Site "Nikaia"]
[Date "2017.09.03"]
[Round "9"]
[White "Nikolaidis, Konstantinos"]
[Black "Nikolaou, Spiridon"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2227"]
[BlackElo "2196"]
[PlyCount "44"]
[EventDate "2017.08.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Be2 d6 6. Be3 Nc6 7. d5 Ne5 8. f4 Neg4 9. Bd2 Nh6 10. Nf3 c6 11. Qb3 a5 12. Bd3 Nd7 13. 0-0 e6 14. Kh1 exd5 15. cxd5 Nc5 16. Qc2 Re8 17. Rae1 Ng4 18. Bc1 Qb6 19. Re2 f5 20. e5 dxe5 21. fxe5 Nxd3 22. Qxd3 h6 1/2-1/2

[Event "Nikaia op 25th"]
[Site "Nikaia"]
[Date "2017.09.02"]
[Round "8"]
[White "Beliotis, Georgios"]
[Black "Nikolaidis, Konstantinos"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2157"]
[BlackElo "2227"]
[PlyCount "102"]
[EventDate "2017.08.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. Nge2 Bg7 5. g3 e6 6. Bg2 Nge7 7. a3 0-0 8. 0-0 Nd4 9. d3 d6 10. Rb1 Rb8 11. b4 b6 12. Nxd4 cxd4 13. Ne2 Bd7 14. a4 Qc7 15. Qb3 Kh8 16. b5 e5 17. h3 Be6 18. Ba3 Rbd8 19. a5 f5 20. axb6 axb6 21. exf5 gxf5 22. f4 Rg8 23. Kh2 Ng6 24. Rbe1 exf4 25. Nxf4 Nxf4 26. gxf4 Qf7 27. Qc2 d5 28. Qe2 Rge8 29. cxd5 Bxd5 30. Qf2 Qd7 31. Rxe8+ Rxe8 32. Re1 Rxe1 33. Qxe1 Bxg2 34. Kxg2 Qxb5 35. Qe6 h6 36. Qc4 Qd7 37. Bb2 Kh7 38. Kg3 Bf6 39. Qb4 Qg7+ 40. Kf3 Qb7+ 41. Kg3 Qg7+ 42. Kh2 Qc7 43. Kg3 Bh4+ 44. Kg2 Qc2+ 45. Kh1 Qd1+ 46. Kg2 Qe2+ 47. Kh1 Qf3+ 48. Kg1 Bf2+ 49. Kf1 Bg3+ 50. Kg1 Qf2+ 51. Kh1 Qh2# 0-1

[Event "Nikaia op 25th"]
[Site "Nikaia"]
[Date "2017.09.01"]
[Round "7"]
[White "Kordis, Konstantinos"]
[Black "Nikolaidis, Konstantinos"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2130"]
[BlackElo "2227"]
[PlyCount "23"]
[EventDate "2017.08.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[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 Qa5+ 10. Bd2 Qd8 11. Bg5 Qa5+ 12. Bd2 1/2-1/2

