[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.12"]
[Round "1.7"]
[White "Ikonnikov, Vyacheslav"]
[Black "Johansson, Jukka"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2499"]
[BlackElo "2075"]
[Annotator "ChessBase"]
[PlyCount "83"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} b6 {[%emt 0:00:13]} 4. g3 {[%emt 0:00:18]} Ba6 {[%emt 0:00:32]} 5. b3 {[%emt 0:00:16]} Bb4+ {[%emt 0:00:32]} 6. Bd2 {[%emt 0:00:16]} Be7 {[%emt 0:00:28]} 7. Bg2 {[%emt 0:00:22]} d5 {[%emt 0:01:13]} 8. cxd5 {[%emt 0:00:37]} exd5 {[%emt 0:00:27]} 9. O-O {[%emt 0:00:42]} O-O {[%emt 0:00:21]} 10. Nc3 {[%emt 0:00:35]} Nbd7 {[%emt 0:05:02]} 11. Qc2 {[%emt 0:02:52]} Bb7 {[%emt 0:04:42]} 12. Rfd1 {[%emt 0:02:02]} Rc8 {[%emt 0:04:12]} 13. Nb5 {[%emt 0:16:03]} c5 {[%emt 0:18:14]} 14. Nxa7 {[%emt 0:00:39]} Ra8 {[%emt 0:00:18]} 15. Nb5 {[%emt 0:00:06]} Rc8 {[%emt 0:00:13]} 16. Qb2 {[%emt 0:03:49]} Ne4 {[%emt 0:03:19]} 17. Bf4 {[%emt 0:02:47]} g5 {[%emt 0:11:28]} 18. Bd2 {[%emt 0:02:31]} Bf6 {[%emt 0:06:42]} 19. Ne5 {[%emt 0:09:31]} Qe7 {[%emt 0:08:57]} 20. Nxd7 {[%emt 0:17:31]} Qxd7 {[%emt 0:00:10]} 21. a4 {[%emt 0:00:02]} Ba6 {[%emt 0:06:28]} 22. Bxe4 {[%emt 0:04:14]} dxe4 {[%emt 0:01:00]} 23. Bc3 {[%emt 0:00:05]} Rfd8 {[%emt 0:04:09]} 24. d5 {[%emt 0:02:18]} Bxc3 {[%emt 0:01:44]} 25. Nxc3 {[%emt 0:00:16]} Re8 {[%emt 0:07:35]} 26. d6 {[%emt 0:01:47]} Bb7 {[%emt 0:01:55]} 27. Nd5 {[%emt 0:00:58]} Bxd5 {[%emt 0:00:48]} 28. Rxd5 {[%emt 0:00:06]} h6 {[%emt 0:00:28]} 29. Qf6 {[%emt 0:06:23]} Qe6 {[%emt 0:02:08]} 30. Qxe6 {[%emt 0:04:12]} Rxe6 {[%emt 0:05:54]} 31. a5 {[%emt 0:01:44]} bxa5 {[%emt 0:00:56]} 32. Rxa5 {[%emt 0:00:05]} Rd8 {[%emt 0:00:26]} 33. Ra6 {[%emt 0:01:16]} Kg7 {[%emt 0:00:27]} 34. e3 {[%emt 0:02:52]} Rd7 {[%emt 0:01:16]} 35. Rc6 {[%emt 0:00:17]} Kf6 {[%emt 0:00:52]} 36. Kf1 {[%emt 0:01:32]} Re5 {[%emt 0:01:04]} 37. Rcxc5 {[%emt 0:00:40]} Rxd5 {[%emt 0:00:20]} 38. Rxd5 {[%emt 0:00:07]} Ke6 {[%emt 0:01:48]} 39. Rd4 {[%emt 0:00:11]} f5 {[%emt 0:00:18]} 40. Ke2 {[%emt 0:00:17]} Rxd6 {[%emt 0:02:11]} 41. Rxd6+ {[%emt 0:30:50]} Kxd6 {[%emt 0:30:08]} 42. Kd2 {[%emt 0:00:05]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.12"]
[Round "1.8"]
[White "Malinarski, Yehuda"]
[Black "Beerdsen, Thomas"]
[Result "1-0"]
[WhiteElo "2050"]
[BlackElo "2497"]
[Annotator "ChessBase"]
[PlyCount "18"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. b3 {[%emt 0:00:17]} b6 {[%emt 0:00:55]} 3. Bb2 {[%emt 0:01:28]} Bb7 {[%emt 0:00:06]} 4. d3 {[%emt 0:01:13]} d5 {[%emt 0:01:04]} 5. exd5 {[%emt 0:02:05]} Qxd5 {[%emt 0:00:29]} 6. Nf3 {[%emt 0:03:14]} Nc6 {[%emt 0:01:08]} 7. Nc3 {[%emt 0:01:22]} Qd7 {[%emt 0:01:08]} 8. Be2 {[%emt 0:03:12]} Nf6 {[%emt 0:03:07]} 9. O-O {[%emt 0:05:25]} g6 {[%emt 0:01:16]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.12"]
[Round "1.10"]
[White "Baak, Evert"]
[Black "Bueno, Mark"]
[Result "0-1"]
[ECO "E02"]
[WhiteElo "1807"]
[BlackElo "1976"]
[Annotator "NA"]
[PlyCount "60"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:20]} d5 {[%emt 0:00:15]} 4. g3 {[%emt 0:00:26]} Be7 {[%emt 0:00:05]} 5. Bg2 {[%emt 0:00:07]} O-O {[%emt 0:00:05]} 6. O-O {[%emt 0:00:56]} dxc4 {[%emt 0:00:04]} 7. Qa4 {[%emt 0:01:04]} Bd7 {[%emt 0:00:36]} 8. Qxc4 {[%emt 0:00:10]} Bc6 {[%emt 0:00:07]} 9. Nc3 {[%emt 0:02:26]} Nbd7 {[%emt 0:00:07]} 10. Rd1 {[%emt 0:07:54]} Nb6 {[%emt 0:00:57]} 11. Qd3 {[%emt 0:01:05]} Nbd5 {[%emt 0:03:02]} 12. Ne5 {[%emt 0:05:21]} Nxc3 {[%emt 0:01:56]} 13. bxc3 {[%emt 0:10:27]} Bxg2 {[%emt 0:00:21]} 14. Kxg2 {[%emt 0:00:01]} Qd5+ {[%emt 0:02:38]} 15. f3 {[%emt 0:02:18]} Rfd8 {[%emt 0:01:29]} 16. a4 {[%emt 0:15:01]} Nd7 {[%emt 0:02:57]} 17. Nc4 {[%emt 0:02:56]} b6 {[%emt 0:10:48]} 18. e4 {[%emt 0:07:37]} Qb7 {[%emt 0:00:24]} 19. Ne3 {[%emt 0:02:43]} c5 {[%emt 0:02:35]} 20. Ba3 {[%emt 0:00:48]} Rac8 {[%emt 0:19:01]} 21. Qb5 {[%emt 0:09:06]} Qc7 {[%emt 0:31:48]} 22. Rac1 {[%emt 0:12:36]} h5 {[%emt 0:04:42]} 23. f4 {[%emt 0:03:13]} Qb7 {[%emt 0:03:00]} 24. d5 {[%emt 0:00:10]} Nf6 {[%emt 0:00:08]} 25. Qd3 {[%emt 0:01:47]} exd5 {[%emt 0:00:09]} 26. exd5 {[%emt 0:00:08]} c4 {[%emt 0:00:56]} 27. Nxc4 {[%emt 0:00:53]} Bxa3 {[%emt 0:02:19]} 28. Nxa3 {[%emt 0:00:15]} Nxd5 {[%emt 0:01:18]} 29. Kg1 {[%emt 0:01:17]} Qe7 {[%emt 0:00:19]} 30. Nb5 {[%emt 0:00:57]} Nxf4 {[%emt 0:02:06]} 0-1

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.13"]
[Round "2.6"]
[White "Chanda, Sandipan"]
[Black "Damen, Jip"]
[Result "1-0"]
[ECO "E52"]
[WhiteElo "2516"]
[BlackElo "2179"]
[Annotator "ChessBase"]
[PlyCount "49"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 b6 6. Nf3 Bb7 7. Bd3 d5 8. cxd5 exd5 9. Rc1 Be7 10. O-O c5 11. Ne5 Nc6 12. Ba6 Bxa6 13. Nxc6 Qc7 14. Nxe7+ Qxe7 15. Re1 Rac8 16. f3 cxd4 17. exd4 Qb4 18. Bg5 Qxb2 19. Rc2 Qa3 20. Bxf6 gxf6 21. Nxd5 Rxc2 22. Qxc2 Qd6 23. Ne7+ Kh8 24. Re4 Qa3 25. Qc6 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.13"]
[Round "2.7"]
[White "Suvrajit, Saha"]
[Black "Ikonnikov, Vyacheslav"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2189"]
[BlackElo "2499"]
[Annotator "ChessBase"]
[PlyCount "72"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:10]} 3. Nf3 {[%emt 0:00:43]} Bb4+ {[%emt 0:00:22]} 4. Bd2 {[%emt 0:00:15]} a5 {[%emt 0:00:14]} 5. a3 {[%emt 0:01:31]} Bxd2+ {[%emt 0:03:32]} 6. Qxd2 {[%emt 0:00:10]} d6 {[%emt 0:00:26]} 7. Nc3 {[%emt 0:00:08]} Nbd7 {[%emt 0:00:31]} 8. g3 {[%emt 0:00:20]} O-O {[%emt 0:03:00]} 9. Bg2 {[%emt 0:00:06]} e5 {[%emt 0:00:16]} 10. O-O {[%emt 0:03:06]} exd4 {[%emt 0:02:52]} 11. Nxd4 {[%emt 0:00:09]} a4 {[%emt 0:00:05]} 12. Rac1 {[%emt 0:02:34]} Nc5 {[%emt 0:15:35]} 13. Nd5 {[%emt 0:02:47]} c6 {[%emt 0:09:19]} 14. Nxf6+ {[%emt 0:01:27]} Qxf6 {[%emt 0:00:03]} 15. Rfd1 {[%emt 0:02:42]} Be6 {[%emt 0:14:11]} 16. Qf4 {[%emt 0:09:17]} Qxf4 {[%emt 0:10:01]} 17. gxf4 {[%emt 0:00:03]} Rfd8 {[%emt 0:00:06]} 18. Rc3 {[%emt 0:03:33]} f6 {[%emt 0:08:27]} 19. Bh3 {[%emt 0:12:10]} Bf7 {[%emt 0:00:55]} 20. Nf5 {[%emt 0:03:25]} Kf8 {[%emt 0:01:23]} 21. Nxd6 {[%emt 0:08:12]} Ne4 {[%emt 0:01:15]} 22. Rcd3 {[%emt 0:00:38]} Rxd6 {[%emt 0:00:23]} 23. Rxd6 {[%emt 0:00:04]} Nxd6 {[%emt 0:00:05]} 24. Rxd6 {[%emt 0:00:04]} Bxc4 {[%emt 0:00:05]} 25. e3 {[%emt 0:02:42]} Bd5 {[%emt 0:02:22]} 26. Rd7 {[%emt 0:10:17]} Ra5 {[%emt 0:01:32]} 27. Rxb7 {[%emt 0:01:06]} Rc5 {[%emt 0:00:06]} 28. f3 {[%emt 0:01:54]} Bb3 {[%emt 0:04:48]} 29. e4 {[%emt 0:03:21]} Rc2 {[%emt 0:02:46]} 30. e5 {[%emt 0:04:08]} fxe5 {[%emt 0:00:07]} 31. fxe5 {[%emt 0:00:02]} Rxb2 {[%emt 0:00:05]} 32. Bf5 {[%emt 0:03:06]} Re2 {[%emt 0:04:38]} 33. Rb8+ {[%emt 0:01:53]} Ke7 {[%emt 0:01:08]} 34. Rb7+ {[%emt 0:00:09]} Kf8 {[%emt 0:02:24]} 35. Rb8+ {[%emt 0:03:35]} Ke7 {[%emt 0:01:27]} 36. Rb7+ {[%emt 0:00:27]} Kf8 {[%emt 0:10:27]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.13"]
[Round "2.8"]
[White "Beerdsen, Thomas"]
[Black "Gieben, Stijn"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2497"]
[BlackElo "2149"]
[Annotator "ChessBase"]
[PlyCount "55"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. f4 d6 9. O-O-O Be7 10. Kb1 O-O 11. Be2 Bd7 12. g4 Nxd4 13. Bxd4 Bc6 14. Bf3 Nd7 15. Be3 b5 16. g5 Qb7 17. Nd5 Bd8 18. Rhg1 Re8 19. Qg2 Bxd5 20. exd5 e5 21. f5 e4 22. g6 hxg6 23. fxg6 f5 24. Qh3 Nf6 25. Be2 Re5 26. Bd4 Rxd5 27. Bxf6 Bxf6 28. Qb3 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.13"]
[Round "2.9"]
[White "Hoogland, Mike"]
[Black "Ivanov, Sergey"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2148"]
[BlackElo "2496"]
[Annotator "RC"]
[PlyCount "100"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} b6 {[%emt 0:00:09]} 4. g3 {[%emt 0:00:06]} Ba6 {[%emt 0:00:11]} 5. b3 {[%emt 0:00:09]} d5 {[%emt 0:00:14]} 6. Bg2 {[%emt 0:00:32]} Bb4+ {[%emt 0:00:21]} 7. Bd2 {[%emt 0:00:20]} Be7 {[%emt 0:00:10]} 8. O-O {[%emt 0:03:09]} O-O {[%emt 0:00:12]} 9. Nc3 {[%emt 0:01:35]} Bb7 {[%emt 0:04:29]} 10. Bf4 {[%emt 0:02:05]} c5 {[%emt 0:06:47]} 11. Qd3 {[%emt 0:11:21]} Na6 {[%emt 0:20:17]} 12. Rad1 {[%emt 0:06:18]} Qc8 {[%emt 0:07:12]} 13. Nb5 {[%emt 0:07:41]} Rd8 {[%emt 0:02:13]} 14. Qb1 {[%emt 0:05:56]} dxc4 {[%emt 0:03:14]} 15. bxc4 {[%emt 0:00:51]} cxd4 {[%emt 0:00:55]} 16. Nfxd4 {[%emt 0:00:38]} Bxg2 {[%emt 0:01:48]} 17. Kxg2 {[%emt 0:00:05]} Qxc4 {[%emt 0:07:00]} 18. e4 {[%emt 0:02:06]} Qc8 {[%emt 0:03:15]} 19. Rc1 {[%emt 0:05:01]} Nc5 {[%emt 0:01:11]} 20. Rfd1 {[%emt 0:07:09]} Qb7 {[%emt 0:07:01]} 21. f3 {[%emt 0:02:01]} Rd7 {[%emt 0:01:29]} 22. Nb3 {[%emt 0:05:09]} Rad8 {[%emt 0:02:19]} 23. Nxc5 {[%emt 0:00:28]} Bxc5 {[%emt 0:01:24]} 24. Kh3 {[%emt 0:10:48]} h6 {[%emt 0:03:37]} 25. Bc7 {[%emt 0:03:52]} Rxd1 {[%emt 0:02:13]} 26. Rxd1 {[%emt 0:00:12]} Rd7 {[%emt 0:00:36]} 27. Be5 {[%emt 0:02:28]} Nh7 {[%emt 0:01:43]} 28. Kg2 {[%emt 0:00:59]} f5 {[%emt 0:04:28]} 29. exf5 {[%emt 0:06:31]} Ng5 {[%emt 0:03:22]} 30. Qb3 {[%emt 0:00:29]} Rxd1 {[%emt 0:04:40]} 31. Qxd1 {[%emt 0:00:28]} exf5 {[%emt 0:00:08]} 32. Qd3 {[%emt 0:05:06]} Qf7 {[%emt 0:02:56]} 33. Nc3 {[%emt 0:01:31]} Qe6 {[%emt 0:00:44]} 34. Bf4 {[%emt 0:02:03]} Nf7 {[%emt 0:00:32]} 35. Nd5 {[%emt 0:02:44]} Ne5 {[%emt 0:06:17]} 36. Bxe5 {[%emt 0:00:26]} Qxe5 {[%emt 0:00:07]} 37. a4 {[%emt 0:03:17]} g5 {[%emt 0:02:17]} 38. Nc3 {[%emt 0:02:12]} Kf7 {[%emt 0:01:47]} 39. Qc4+ {[%emt 0:01:45]} Kg7 {[%emt 0:00:25]} 40. Qd3 {[%emt 0:00:56]} h5 {[%emt 0:01:09]} 41. g4 {[%emt 0:13:49]} fxg4 {[%emt 0:06:53]} 42. fxg4 {[%emt 0:00:39]} Bd6 {[%emt 0:00:32]} 43. Ne4 {[%emt 0:08:46]} Qxh2+ {[%emt 0:01:42]} 44. Kf1 {[%emt 0:00:09]} Qf4+ {[%emt 0:01:03]} 45. Ke1 {[%emt 0:01:00]} Bb4+ {[%emt 0:00:51]} 46. Kd1 {[%emt 0:00:11]} Qxg4+ {[%emt 0:00:15]} 47. Kc2 {[%emt 0:00:16]} Be7 {[%emt 0:01:07]} 48. Qc3+ {[%emt 0:00:50]} Kf7 {[%emt 0:00:40]} 49. Qb3+ {[%emt 0:00:59]} Qe6 {[%emt 0:01:07]} 50. Qf3+ {[%emt 0:00:37]} Kg6 {[%emt 0:01:10]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.13"]
[Round "2.10"]
[White "Bueno, Mark"]
[Black "Baak, Karl"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1976"]
[BlackElo "1851"]
[Annotator "NA"]
[PlyCount "55"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. d3 {[%emt 0:00:00]} d5 {[%emt 0:00:12]} 3. Nd2 {[%emt 0:00:00]} c5 {[%emt 0:00:26]} 4. Ngf3 {[%emt 0:00:12]} Nc6 {[%emt 0:00:17]} 5. g3 {[%emt 0:00:07]} Nf6 {[%emt 0:00:23]} 6. Bg2 {[%emt 0:00:07]} Be7 {[%emt 0:00:13]} 7. O-O {[%emt 0:00:07]} O-O {[%emt 0:00:35]} 8. e5 {[%emt 0:00:09]} Nd7 {[%emt 0:00:20]} 9. Re1 {[%emt 0:00:07]} Qc7 {[%emt 0:00:15]} 10. Qe2 {[%emt 0:00:05]} b5 {[%emt 0:00:28]} 11. Nf1 {[%emt 0:00:14]} a5 {[%emt 0:00:57]} 12. Bf4 {[%emt 0:00:36]} Ba6 {[%emt 0:03:47]} 13. h4 {[%emt 0:00:09]} Nd4 {[%emt 0:00:48]} 14. Nxd4 {[%emt 0:00:19]} cxd4 {[%emt 0:00:10]} 15. h5 {[%emt 0:00:13]} h6 {[%emt 0:04:15]} 16. Nh2 {[%emt 0:00:15]} Rfc8 {[%emt 0:00:14]} 17. Rec1 {[%emt 0:04:48]} Qd8 {[%emt 0:04:31]} 18. Nf3 {[%emt 0:01:31]} Qb6 {[%emt 0:04:01]} 19. Qd2 {[%emt 0:05:04]} Bf8 {[%emt 0:00:29]} 20. g4 {[%emt 0:03:31]} Rc6 {[%emt 0:12:54]} 21. g5 {[%emt 0:03:32]} Kh7 {[%emt 0:00:52]} 22. Kh1 {[%emt 0:03:31]} Rac8 {[%emt 0:00:38]} 23. Bh2 {[%emt 0:15:40]} Bb4 {[%emt 0:18:48]} 24. Qf4 {[%emt 0:02:36]} Rf8 {[%emt 0:00:19]} 25. gxh6 {[%emt 0:02:12]} gxh6 {[%emt 0:00:47]} 26. Rg1 {[%emt 0:13:10]} Rxc2 {[%emt 0:11:27]} 27. Nxd4 {[%emt 0:01:19]} Rxf2 {[%emt 0:05:26]} 28. Be4+ {[%emt 0:03:24]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.14"]
[Round "3.1"]
[White "Nikolic, Predrag"]
[Black "Kuipers, Stefan"]
[Result "1/2-1/2"]
[ECO "A32"]
[WhiteElo "2574"]
[BlackElo "2435"]
[Annotator "ChessBase"]
[PlyCount "69"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:22]} c5 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:01:39]} e6 {[%emt 0:00:32]} 4. g3 {[%emt 0:00:39]} cxd4 {[%emt 0:00:49]} 5. Nxd4 {[%emt 0:00:07]} Nc6 {[%emt 0:00:20]} 6. Bg2 {[%emt 0:01:23]} Bc5 {[%emt 0:02:43]} 7. Nb3 {[%emt 0:00:44]} Bb6 {[%emt 0:00:16]} 8. Nc3 {[%emt 0:02:54]} O-O {[%emt 0:04:46]} 9. O-O {[%emt 0:01:33]} h6 {[%emt 0:09:39]} 10. c5 {[%emt 0:19:22]} Bc7 {[%emt 0:01:38]} 11. Be3 {[%emt 0:00:07]} Ng4 {[%emt 0:11:55]} 12. Qc1 {[%emt 0:03:13]} b6 {[%emt 0:20:48]} 13. Rd1 {[%emt 0:03:49]} Nxe3 {[%emt 0:01:53]} 14. Qxe3 {[%emt 0:00:28]} Qg5 {[%emt 0:03:22]} 15. Qxg5 {[%emt 0:16:59]} hxg5 {[%emt 0:00:07]} 16. cxb6 {[%emt 0:00:07]} Bxb6 {[%emt 0:02:40]} 17. Na4 {[%emt 0:04:44]} d5 {[%emt 0:03:47]} 18. e4 {[%emt 0:02:18]} Ne7 {[%emt 0:03:22]} 19. exd5 {[%emt 0:03:16]} Nxd5 {[%emt 0:01:14]} 20. Bxd5 {[%emt 0:02:28]} exd5 {[%emt 0:00:07]} 21. Nxb6 {[%emt 0:00:04]} axb6 {[%emt 0:00:07]} 22. f3 {[%emt 0:05:04]} g4 {[%emt 0:03:49]} 23. fxg4 {[%emt 0:01:46]} Bxg4 {[%emt 0:00:28]} 24. Rxd5 {[%emt 0:00:06]} Rfd8 {[%emt 0:08:46]} 25. Rb5 {[%emt 0:05:09]} Rac8 {[%emt 0:04:45]} 26. Rb4 {[%emt 0:00:18]} Be6 {[%emt 0:03:19]} 27. Nd4 {[%emt 0:02:19]} Bc4 {[%emt 0:01:00]} 28. Nf5 {[%emt 0:02:51]} Rc5 {[%emt 0:01:03]} 29. Ne3 {[%emt 0:04:41]} Be6 {[%emt 0:00:32]} 30. Rxb6 {[%emt 0:04:24]} Rd2 {[%emt 0:00:35]} 31. Re1 {[%emt 0:00:42]} Bxa2 {[%emt 0:00:47]} 32. Nf1 {[%emt 0:00:41]} Rdc2 {[%emt 0:01:07]} 33. Ne3 {[%emt 0:03:36]} Rd2 {[%emt 0:00:06]} 34. Nf1 {[%emt 0:00:03]} Rdc2 {[%emt 0:00:05]} 35. Ne3 {[%emt 0:04:44]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.14"]
[Round "3.2"]
[White "Pruijssers, Roeland"]
[Black "Pijpers, Arthur"]
[Result "1/2-1/2"]
[ECO "C08"]
[WhiteElo "2534"]
[BlackElo "2474"]
[Annotator "ChessBase"]
[PlyCount "80"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:01:02]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:06]} d5 {[%emt 0:00:00]} 3. Nd2 {[%emt 0:00:08]} c5 {[%emt 0:00:00]} 4. exd5 {[%emt 0:00:16]} exd5 {[%emt 0:00:00]} 5. Ngf3 {[%emt 0:00:34]} Nf6 {[%emt 0:00:00]} 6. Bb5+ {[%emt 0:00:18]} Bd7 {[%emt 0:00:00]} 7. Bxd7+ {[%emt 0:00:09]} Nbxd7 {[%emt 0:00:01]} 8. O-O {[%emt 0:00:12]} Be7 {[%emt 0:00:03]} 9. dxc5 Nxc5 {[%emt 0:00:04]} 10. Re1 {[%emt 0:00:32]} O-O {[%emt 0:00:08]} 11. Nf1 {[%emt 0:00:06]} Re8 {[%emt 0:01:05]} 12. Be3 {[%emt 0:03:50]} a5 {[%emt 0:23:20]} 13. h3 {[%emt 0:07:52]} a4 {[%emt 0:01:07]} 14. a3 {[%emt 0:00:59]} Qd7 {[%emt 0:15:03]} 15. Bd4 {[%emt 0:06:53]} Ne6 {[%emt 0:00:59]} 16. Be5 {[%emt 0:00:26]} Rad8 {[%emt 0:04:43]} 17. Ng3 {[%emt 0:16:01]} Nc5 {[%emt 0:04:17]} 18. Bd4 {[%emt 0:23:39]} Ne6 {[%emt 0:05:29]} 19. Nf5 {[%emt 0:05:54]} Nxd4 {[%emt 0:01:34]} 20. Nxe7+ {[%emt 0:03:09]} Rxe7 {[%emt 0:00:04]} 21. Nxd4 {[%emt 0:00:19]} Ne4 {[%emt 0:02:01]} 22. Qd3 {[%emt 0:01:53]} Rde8 {[%emt 0:17:40]} 23. Rad1 {[%emt 0:01:32]} Qc7 {[%emt 0:11:36]} 24. Re2 {[%emt 0:10:17]} g6 {[%emt 0:02:47]} 25. Rde1 {[%emt 0:04:07]} Qb6 {[%emt 0:01:17]} 26. c3 {[%emt 0:01:23]} Nc5 {[%emt 0:01:59]} 27. Qc2 {[%emt 0:00:26]} Re4 {[%emt 0:01:49]} 28. Qd2 {[%emt 0:04:29]} Qa6 {[%emt 0:01:06]} 29. Re3 {[%emt 0:01:40]} Nd3 {[%emt 0:01:31]} 30. R1e2 {[%emt 0:01:52]} Rxe3 {[%emt 0:00:05]} 31. Rxe3 {[%emt 0:00:05]} Rxe3 {[%emt 0:00:05]} 32. Qxe3 {[%emt 0:00:18]} Nxb2 {[%emt 0:00:41]} 33. Qe8+ {[%emt 0:00:07]} Kg7 {[%emt 0:00:03]} 34. Qe5+ {[%emt 0:00:06]} Qf6 {[%emt 0:01:17]} 35. Qxd5 {[%emt 0:00:08]} Nd1 {[%emt 0:00:45]} 36. Nf3 {[%emt 0:03:14]} Nxc3 {[%emt 0:00:30]} 37. Qxb7 {[%emt 0:00:07]} Ne2+ {[%emt 0:00:12]} 38. Kf1 {[%emt 0:00:55]} Nd4 {[%emt 0:01:55]} 39. Nxd4 {[%emt 0:01:08]} Qxd4 {[%emt 0:00:04]} 40. Qf3 {[%emt 0:00:14]} Qa1+ {[%emt 0:00:59]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.14"]
[Round "3.3"]
[White "Schekachikhin, Maksim"]
[Black "Lalith Babu M R"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2415"]
[BlackElo "2580"]
[Annotator "ChessBase"]
[PlyCount "55"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:02]} d5 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:16]} a6 {[%emt 0:00:00]} 5. cxd5 {[%emt 0:01:54]} exd5 {[%emt 0:00:00]} 6. Bg5 {[%emt 0:00:10]} Be6 {[%emt 0:02:05]} 7. e3 {[%emt 0:01:00]} Nbd7 {[%emt 0:00:25]} 8. h3 {[%emt 0:07:28]} Bd6 {[%emt 0:05:22]} 9. Bd3 {[%emt 0:00:22]} c6 10. Bf4 {[%emt 0:02:54]} Qc7 {[%emt 0:00:59]} 11. Bxd6 {[%emt 0:00:10]} Qxd6 {[%emt 0:00:03]} 12. Qc2 {[%emt 0:00:22]} h6 {[%emt 0:03:18]} 13. Nd2 {[%emt 0:10:28]} O-O {[%emt 0:06:33]} 14. O-O {[%emt 0:03:31]} c5 {[%emt 0:06:03]} 15. dxc5 {[%emt 0:03:32]} Nxc5 {[%emt 0:10:13]} 16. Rfd1 {[%emt 0:10:24]} Rac8 {[%emt 0:02:46]} 17. Rac1 {[%emt 0:14:23]} Qb6 {[%emt 0:05:10]} 18. Be2 {[%emt 0:00:47]} Nce4 {[%emt 0:05:47]} 19. Ndxe4 {[%emt 0:04:00]} Nxe4 {[%emt 0:00:28]} 20. Bf3 {[%emt 0:08:19]} Nxc3 {[%emt 0:05:12]} 21. bxc3 {[%emt 0:00:06]} Rc5 {[%emt 0:00:03]} 22. Rd4 {[%emt 0:03:54]} Rfc8 {[%emt 0:01:41]} 23. Qd2 {[%emt 0:01:38]} Qa5 {[%emt 0:08:39]} 24. Rd1 {[%emt 0:05:51]} Qxc3 {[%emt 0:02:35]} 25. Qxc3 {[%emt 0:02:21]} Rxc3 {[%emt 0:00:11]} 26. Bxd5 {[%emt 0:00:04]} Bxd5 {[%emt 0:00:30]} 27. Rxd5 {[%emt 0:00:30]} R8c7 {[%emt 0:00:00]} 28. a4 {[%emt 0:03:38]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.14"]
[Round "3.4"]
[White "Sengupta, Deep"]
[Black "Van der Wiel, John T.H."]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2558"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,123,0,38,7,45,45,37,27,57,48,78,38,33,37,49,35,40,25,30,20,41,0,19,-27,-4,-15,-13,-25,-23,-33,27,31,36,36,52,27,37,30,30,37,37,33,35,26,31,32,39,15,16,16,67,67,65,13,68,66,66,66,68,51,30,22,35,31,27,33,52,39,223,223,223,209,209,201,124,0,0,0,0,0,0,0,939,0,946,910,917,910,599,0,0,0,0,0,0,0,0,0,0,0,29963,29964,29967,29968,29957,12797,29977,29978,29978,29980,29991,29992]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 {B94: Sicilian Najdorf: 6 Bg5 Nbd7} g6 9. O-O-O Bg7 10. g4 {White is slightly better.} (10. Be2 h6 11. Bh4 Nb6 12. h3 Bd7 13. Rhe1 Bc6 14. Nxc6 bxc6 15. Bxf6 exf6 {½-½ (69) Sjugirov,S (2661)-Artemiev,V (2754) Sochi 2019}) 10... O-O 11. Bg2 Nb6 $146 ({Predecessor:} 11... Rb8 12. Rhe1 b5 13. Nb3 e5 {1-0 (13) Walek,P (2070)-Sosovicka,J (1677) Kouty nad Desnou 2014}) 12. Bxf6 Bxf6 13. g5 Bg7 14. f5 Be5 15. h4 Qc5 16. Nb3 Qc4 17. h5 gxf5 18. Bf1 Qc6 {Black wants to play ...Bxc3.} 19. Nd4 Qc5 20. Nxf5 Bxf5 21. exf5 Bxc3 (21... Rfc8 $15 22. g6 Rc7) 22. Qxc3 $11 Qxc3 23. bxc3 Na4 24. f6 Nxc3 25. fxe7 Rfe8 $1 26. Rxd6 Rxe7 27. Bc4 Rc8 28. Bb3 Ne4 29. Rd5 Nc5 30. Rhd1 Nxb3+ 31. axb3 {[%mdl 4096] Endgame KRR-KRR} h6 ({Better is} 31... Kg7 $11) 32. gxh6 $14 Kh7 33. Rd7 (33. Rd6 $14) 33... Rc7 (33... Rxd7 $1 $11 34. Rxd7 Kxh6) 34. Rxc7 Rxc7 {KR-KR} 35. Rd6 Rc6 36. Rd7 Rf6 $1 37. Rxb7 {Black must now prevent b4.} Kxh6 38. c4 Kxh5 39. Kc2 Kg4 40. Kc3 a5 $2 ({Black should play} 40... Rf1 $1 $14) 41. c5 $18 Rf1 42. Rb5 f5 43. Rxa5 {aiming for Ra2.} f4 44. Ra8 ({White must play} 44. Ra2 $1 $16 Kf5 45. Rc2) 44... f3 $11 45. Rf8 Kg3 46. b4 {Kc2 is the strong threat.} f2 47. b5 Re1 $2 {[%mdl 8192] [#]} (47... Rc1+ $11 48. Kd4 Rd1+ 49. Kc4 f1=Q+ 50. Rxf1 Rxf1) 48. Kd4 $2 (48. Rxf2 $3 $18 {[%mdl 512]} Kxf2 49. c6) 48... f1=Q $4 {[%mdl 8192]} (48... Rd1+ $11 49. Kc4 Rc1+ 50. Kd5 Rd1+ 51. Kc6 Rd3) 49. Rxf1 $18 Rxf1 {[#] KR-KPP} 50. c6 $1 Kf4 51. c7 $2 (51. b6 $18 {Hoping for c7.} Rd1+ 52. Kc4 Rc1+ 53. Kd5 Rd1+ 54. Kc4 Rc1+ 55. Kd5 Rd1+ 56. Ke6) 51... Rd1+ $11 52. Kc5 Ke5 $1 {( -> ...Rc1+)} 53. Kc6 Rc1+ 54. Kd7 Rd1+ 55. Ke7 Rc1 56. b6 Kd5 $2 {[%mdl 8192]} (56... Rc6 $11) 57. Kd7 Rb1 58. c8=Q Rxb6 59. Qa8+ Kc5 60. Qa5+ {White mates.} Rb5 61. Qc3+ Kd5 62. Qc6+ {[%mdl 64] Double Attack. Accuracy: White = 54%, Black = 55%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.14"]
[Round "3.5"]
[White "Stefansson, Hannes"]
[Black "Das, Arghyadip"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2562"]
[BlackElo "2439"]
[Annotator "ChessBase"]
[PlyCount "87"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:19]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:13]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:10]} 4. Nxd4 {[%emt 0:00:11]} Nf6 {[%emt 0:00:04]} 5. Nc3 {[%emt 0:00:15]} a6 {[%emt 0:00:09]} 6. h3 {[%emt 0:00:38]} e6 {[%emt 0:09:02]} 7. g4 {[%emt 0:00:58]} b5 {[%emt 0:02:21]} 8. g5 {[%emt 0:05:20]} Nfd7 {[%emt 0:00:10]} 9. a3 {[%emt 0:01:55]} Bb7 {[%emt 0:00:45]} 10. h4 {[%emt 0:01:22]} Nc6 {[%emt 0:08:10]} 11. Be3 {[%emt 0:05:53]} Rc8 {[%emt 0:04:50]} 12. Nxc6 {[%emt 0:04:15]} Rxc6 {[%emt 0:06:09]} 13. Qd4 {[%emt 0:05:15]} Ne5 {[%emt 0:12:04]} 14. O-O-O {[%emt 0:01:19]} Qc8 {[%emt 0:14:38]} 15. f4 {[%emt 0:10:31]} Nc4 {[%emt 0:00:26]} 16. Bxc4 {[%emt 0:00:25]} Rxc4 {[%emt 0:00:15]} 17. Qd3 {[%emt 0:00:27]} a5 {[%emt 0:08:07]} 18. Bd4 {[%emt 0:09:25]} b4 {[%emt 0:01:49]} 19. axb4 {[%emt 0:19:28]} axb4 {[%emt 0:00:20]} 20. Nd5 {[%emt 0:02:50]} exd5 {[%emt 0:03:42]} 21. exd5 {[%emt 0:00:07]} Bxd5 {[%emt 0:02:20]} 22. Rhe1+ {[%emt 0:00:09]} Kd7 {[%emt 0:00:24]} 23. Bg1 {[%emt 0:14:02]} Qc6 {[%emt 0:04:17]} 24. Bd4 {[%emt 0:03:29]} Be7 {[%emt 0:07:17]} 25. b3 {[%emt 0:04:08]} Rxd4 {[%emt 0:02:22]} 26. Qxd4 {[%emt 0:00:05]} Be6 {[%emt 0:01:07]} 27. Qa7+ {[%emt 0:01:04]} Qc7 {[%emt 0:08:22]} 28. Qxc7+ {[%emt 0:00:09]} Kxc7 {[%emt 0:00:03]} 29. f5 {[%emt 0:00:14]} Kd7 {[%emt 0:00:10]} 30. fxe6+ {[%emt 0:00:15]} fxe6 {[%emt 0:00:01]} 31. Kd2 {[%emt 0:05:00]} h6 {[%emt 0:02:11]} 32. Ra1 {[%emt 0:01:02]} e5 {[%emt 0:00:03]} 33. Ra7+ {[%emt 0:00:31]} Ke6 {[%emt 0:00:02]} 34. gxh6 {[%emt 0:02:19]} Rxh6 {[%emt 0:00:59]} 35. Re4 {[%emt 0:00:17]} d5 {[%emt 0:00:19]} 36. Rg4 {[%emt 0:00:40]} g6 {[%emt 0:00:40]} 37. Rb7 {[%emt 0:01:22]} e4 {[%emt 0:01:18]} 38. Ke3 {[%emt 0:00:43]} Bxh4 {[%emt 0:02:28]} 39. Rxb4 {[%emt 0:01:04]} Bf6 {[%emt 0:00:02]} 40. Rb5 {[%emt 0:02:06]} Rh3+ {[%emt 0:00:15]} 41. Ke2 {[%emt 0:07:09]} Rh2+ {[%emt 0:00:48]} 42. Kd1 {[%emt 0:01:46]} Rh1+ {[%emt 0:01:30]} 43. Ke2 {[%emt 0:00:13]} Rh2+ {[%emt 0:00:36]} 44. Kd1 {[%emt 0:00:51]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.15"]
[Round "4.6"]
[White "Chanda, Sandipan"]
[Black "Lai, Hing Ting"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2516"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,63,3,3,3,15,20,15,12,15,18,12,15,15,15,15,15,23,0,0,0,0,0,0,8,10,0,13,8,7,8,83,56,270,285,381,375,379,351,346,263,193,204,189,166,425,424,410,390,536,531,537,535]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5} a6 (8... Bb7 9. Bd3 Be7 10. O-O c5 11. dxc5 bxc5 12. Na4 Nbd7 13. Bc3 Ne4 14. Bxe4 dxe4 15. Ne5 Nxe5 16. Bxe5 Qxd1 17. Rfxd1 {½-½ (30) Wang,Y (2690)-Cheparinov,I (2702) China 2018}) 9. Ne5 Bb7 10. Bd3 {The position is equal.} Bd6 11. O-O c5 12. f4 Nc6 13. Ng4 Be7 14. Nxf6+ Bxf6 {[#]} 15. Qh5 $146 {[%csl Gd3][%cal Rh5h7] [#]} ({Predecessor:} 15. dxc5 bxc5 16. b3 Nb4 17. Bb1 d4 18. Na4 dxe3 19. Bxe3 {1-0 (35) Sandipan,C (2566)-Ma,Z (2471) Sanya 2017}) 15... g6 16. Qf3 $1 ({But not} 16. Qxd5 cxd4 17. Qxd8 Raxd8 $17) 16... Nb4 17. Bb1 cxd4 18. exd4 Bxd4+ 19. Kh1 Nc6 20. f5 Be5 21. Qh3 Qd6 (21... Re8 $11 {remains equal.}) 22. Rcd1 $16 {[%cal Bc1d1,Bd1d4,Bd4h4,Bh4f4][%mdl 32]} Bxc3 $2 ({Better is} 22... Ne7 $14) 23. bxc3 $18 Ne5 24. Bf4 Qf6 25. Bh6 {And now fxg6 would win.} Qd6 26. Bxf8 Rxf8 27. Rd4 Qf6 28. Rh4 h5 $2 (28... a5 {is a better defense.} 29. Rxh7 Ba6) 29. Kg1 {Black must now prevent fxg6.} Qg5 {[#]} 30. Rhf4 $1 Re8 31. fxg6 fxg6 32. Qe3 {Accuracy: White = 85%, Black = 47%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.15"]
[Round "4.7"]
[White "Van der Werf, Mark"]
[Black "Ivanov, Sergey"]
[Result "1/2-1/2"]
[ECO "A27"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,39,41,53,45,45,45,46,45,48,58,52,57,55,62,58,70,68,82,73,87,27,42,13,30,19,50,46,86,34,37,0,0,0,0,0,0,0,0,-13,0,0,16,17,49,14,89,81,43,44,82,83,83,87,199,206,196,173,125,158,146,123,121,152,186,139,142,127,143,0,8,0,139,0]} 1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 Nf6 (4... d6 5. d4 e4 6. d5 Ne5 7. Nxe5 dxe5 8. g4 g6 9. gxf5 gxf5 10. Rg1 Nf6 11. Bg5 Be7 12. e3 Rg8 {1-0 (27) Aronian,L (2793)-Ivanchuk,V (2738) Leuven 2017}) 5. d4 e4 6. Nh4 {A27: English Opening: Three Knights Variation} g6 7. Bg5 Bg7 8. e3 {White is slightly better.} d6 9. Ng2 ({Much weaker is} 9. d5 Ne5 $17) 9... O-O 10. Nf4 Ne7 11. Qb3 c6 12. Be2 $146 ({Predecessor:} 12. O-O-O) 12... h6 13. Bxf6 $1 Bxf6 14. h4 c5 15. dxc5 (15. O-O-O $16 {And now dxc5 would win.} cxd4 16. exd4) 15... dxc5 $11 16. Ncd5 Nxd5 17. cxd5 Qa5+ 18. Kf1 {d6+ is the strong threat.} Kg7 19. Rd1 (19. d6 $16 Qb6 20. Qd5) 19... Qb6 20. Rd2 Qxb3 21. axb3 Rd8 22. Kg2 Be5 23. Rhd1 Kf6 24. f3 exf3+ 25. Bxf3 Rd6 26. Nd3 b6 27. b4 (27. g4 $5 fxg4 28. Be4 $11) 27... c4 (27... cxb4 $11 28. e4 Bd7) 28. Nxe5 $16 Kxe5 29. Re1 Kf6 30. e4 fxe4 31. Rxe4 b5 (31... Bb7 $16 {was necessary.}) 32. Rf4+ $18 Kg7 33. Re2 {[#] Black must now prevent Re7+.} Rd7 34. d6 Bb7 35. Bxb7 Rxb7 $16 {[%mdl 4096] Endgame KRR-KRR} 36. Re6 Rf7 37. Rg4 Rf6 38. Re7+ Rf7 39. Re6 (39. h5 $1 $16 Rxe7 40. Rxg6+ (40. dxe7 g5 $16) 40... Kf7 41. dxe7) 39... Rf6 $1 $11 {[%cal Rf6e6]} 40. Re7+ (40. Re5 $11) 40... Rf7 $1 $16 41. Re6 {Accuracy: White = 61%, Black = 55%.} ({White has to play} 41. h5 $1 $16 Rxe7 42. Rxg6+ (42. dxe7 g5 $16) 42... Kf7 43. dxe7) 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.15"]
[Round "4.8"]
[White "Beerdsen, Thomas"]
[Black "Ikonnikov, Vyacheslav"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2497"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,57,45,45,34,52,67,66,63,66,64,71,70,68,61,61,62,72,32,46,13,36,43,35,36,39,10,21,18,11,14,15,14,13,0]} 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. Nc2 Bg5 10. Be2 Bxc1 11. Rxc1 Nf6 12. O-O O-O 13. Qd2 Qb8 14. Rfd1 {B32: Sicilian: Löwenthal and Kalashnikov Variations} Rd8 15. Qe3 Qa7 16. Qxa7 {White is slightly better.} Nxa7 17. f3 Rac8 18. b3 Kf8 19. Kf2 {[#]} g6 $146 ({Predecessor:} 19... Ke7 20. g3 g6 21. Ke3 h5 {½-½ (48) Frostick,C (2466)-Pankratov,V (2504) Argentina 1997}) 20. g3 Nc6 21. Ke3 Ne8 22. f4 exf4+ 23. gxf4 f5 24. Bf3 Rc7 25. Nd5 Rf7 {The position is equal.} 26. exf5 Bxf5 27. Kf2 Ng7 28. Nce3 Re8 29. Rc3 {Accuracy: White = 68%, Black = 85%.} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.15"]
[Round "4.9"]
[White "Suvrajit, Saha"]
[Black "De Jong, Migchiel"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2189"]
[BlackElo "2345"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,128,18,17,0,0,0,0,-5,-6,0,0,0,-8,-8,0,-24,-2,-17,9,0,14,-4,12,0,2,0,24,6,30,0,33,33,25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,35,33,27,24,61,61,70,67,77,94,91,66,292,54,54,42,43,21,46,61,61,55,73,49,45,45,50,50,55,43,50,0,0,0,0,0,0,1,1,1,15,15,17,18,54,25,33,33,43,0,505,391,325,375,470,460,558,0,417,0,0,0,341,0,0,0,430,405,1826]} 1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. g3 Nf6 5. Bg2 d5 (5... O-O 6. Nf3 b6 7. O-O Bb7 8. Bf4 Be7 9. Nc3 Ne4 10. Nb5 c6 11. Nc7 Ra7 12. Qb3 d6 13. c5 Qxc7 14. cxb6 a4 15. bxc7 axb3 16. cxb8=Q Rxb8 17. axb3 Rba8 18. Rxa7 Rxa7 {½-½ (37) Jakovenko,D (2719)-Rapport,R (2726) Shenzhen 2019}) 6. a3 {E00: Catalan Bogo-Indian (3 g3 Bb4+)} Be7 7. Nc3 O-O 8. cxd5 {The position is equal.} exd5 9. Qc2 c6 10. Nf3 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4][%mdl 32]} 11. O-O Bd6 12. Rfe1 Re8 13. Rad1 Nb6 $146 ({Predecessor:} 13... h6 14. Bc1 Nb6 15. h3 Qc7 16. Nd2 g6 17. e4 dxe4 18. Ndxe4 Nxe4 19. Nxe4 Rxe4 20. Bxe4 {1-0 (59) Albrecht,N (1853)-Duemmke,J (2056) Hamburg 2018}) 14. Bg5 Be7 15. Bf4 g6 16. Ne5 Bf5 17. Qc1 Qc8 18. Nd3 Nc4 19. e4 (19. f3 {is more complex.} b5 20. Bg5 b4 21. Na4 bxa3 22. b3) 19... dxe4 20. Nxe4 Nxe4 21. Bxe4 Nb6 22. Bxf5 Qxf5 23. Re5 Qd7 24. Rde1 Nd5 25. Nc5 Bxc5 $1 26. dxc5 f6 27. Rxe8+ Rxe8 28. Rxe8+ Qxe8 29. Bd2 a4 30. Qc4 $36 {[%mdl 2048] White has some pressure.} Qe5 31. Bc3 Qf5 32. Qxa4 Qb1+ 33. Kg2 Nxc3 34. bxc3 $14 {[%mdl 4096] Endgame KQ-KQ} Kf7 $1 35. Qc4+ Ke7 36. Qf4 g5 $2 {[#]} (36... Qd3 $14) 37. Qd6+ $2 (37. Qb4 $1 $18 {[%cal Rb4b1]} Qxb4 38. cxb4) 37... Kf7 38. Qd7+ Kg6 39. Qe8+ Kg7 40. Qe7+ Kg6 41. h3 h5 42. Qe8+ Kh6 43. Qh8+ Kg6 44. Qg8+ Kh6 45. Qc4 Qf5 46. g4 hxg4 47. hxg4 Qe5 48. Qd4 Qe6 49. Kf3 Kg7 50. a4 Kf7 51. Qb4 Qd5+ 52. Ke3 Qe5+ 53. Kd3 Qd5+ 54. Kc2 Qa2+ 55. Kd3 Qxf2 $2 {[%mdl 8192]} (55... Qd5+ $11 {and Black has nothing to worry.} 56. Ke3 Qe5+ 57. Kd3 Qe7) 56. Qxb7+ $18 {[%mdl 64] [#] Double Attack} Kg6 57. Qxc6 Qg3+ 58. Kd4 Qg1+ 59. Kd3 $2 (59. Kd5 $18) 59... Qd1+ $2 {[%mdl 8192]} (59... Qg3+ $1 $11 60. Kd4 Qe5+ 61. Kc4 Qe2+ 62. Kd5 Qe5+ 63. Kc4 Qe2+ 64. Kd5 Qe5+ 65. Kc4) 60. Ke3 $2 (60. Kc4 $18) 60... Qe1+ $11 61. Kd3 $2 {[%mdl 8192]} (61. Kd4 $11 Qd1+ 62. Kc4 Qxg4+ 63. Kb5 Qe2+ 64. c4) 61... Qd1+ $18 62. Ke3 $2 (62. Kc4 $18) 62... Qe1+ $11 63. Kd3 {White threatens Qe4+ and mate.} Qg3+ $2 {[%mdl 8192]} (63... Qd1+ $11 {and Black stays safe.} 64. Kc4 Qxg4+ 65. Kb3 Qd1+ 66. Kb4 Qe2) 64. Kc2 $18 Kf7 {[%mdl 32768] Accuracy: White = 55%, Black = 57%. . An unexpected result.} (64... Qxg4 $142 65. Qe8+ Kh6) 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.15"]
[Round "4.10"]
[White "Bueno, Mark"]
[Black "Jakhari, Ansh"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1976"]
[Annotator "NA"]
[PlyCount "77"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:01]} 6. Rg1 {[%emt 0:00:00]} e5 {[%emt 0:04:43]} 7. Nb3 {[%emt 0:00:00]} Be6 {[%emt 0:03:18]} 8. g4 {[%emt 0:00:00]} d5 {[%emt 0:05:10]} 9. exd5 {[%emt 0:00:00]} Nxd5 {[%emt 0:00:04]} 10. Nxd5 {[%emt 0:00:11]} Qxd5 {[%emt 0:00:54]} 11. Qxd5 {[%emt 0:00:09]} Bxd5 {[%emt 0:00:03]} 12. Be3 {[%emt 0:01:05]} Nc6 {[%emt 0:04:36]} 13. O-O-O {[%emt 0:01:42]} Be6 {[%emt 0:02:06]} 14. Kb1 {[%emt 0:06:41]} Bxb3 {[%emt 0:04:44]} 15. axb3 {[%emt 0:00:11]} Be7 {[%emt 0:00:05]} 16. Bg2 {[%emt 0:00:20]} Rd8 {[%emt 0:02:46]} 17. c3 {[%emt 0:03:36]} h5 {[%emt 0:02:42]} 18. g5 {[%emt 0:00:42]} O-O {[%emt 0:01:01]} 19. Kc2 {[%emt 0:01:16]} Rfe8 {[%emt 0:04:03]} 20. Bxc6 {[%emt 0:05:29]} bxc6 {[%emt 0:00:05]} 21. Ra1 {[%emt 0:00:23]} Ra8 {[%emt 0:04:25]} 22. Ra4 {[%emt 0:00:55]} Red8 {[%emt 0:01:21]} 23. Rga1 {[%emt 0:01:04]} Rd5 {[%emt 0:01:41]} 24. Rxa6 {[%emt 0:02:28]} Rxa6 {[%emt 0:00:39]} 25. Rxa6 {[%emt 0:00:03]} c5 {[%emt 0:00:09]} 26. Ra7 {[%emt 0:04:41]} Bd8 {[%emt 0:01:47]} 27. h4 {[%emt 0:02:17]} f6 {[%emt 0:01:15]} 28. c4 {[%emt 0:01:28]} Rd6 {[%emt 0:00:24]} 29. Bxc5 {[%emt 0:00:05]} Rc6 {[%emt 0:00:02]} 30. Ra8 {[%emt 0:09:40]} Rxc5 {[%emt 0:03:30]} 31. gxf6 {[%emt 0:01:54]} gxf6 {[%emt 0:00:26]} 32. Rxd8+ {[%emt 0:00:57]} Kf7 {[%emt 0:00:06]} 33. Kc3 {[%emt 0:00:26]} e4 {[%emt 0:00:10]} 34. Rd5 {[%emt 0:00:05]} Rc8 {[%emt 0:01:42]} 35. b4 {[%emt 0:01:34]} Rg8 {[%emt 0:00:17]} 36. b5 {[%emt 0:00:31]} Ke6 {[%emt 0:00:35]} 37. Rxh5 {[%emt 0:02:40]} Rg2 {[%emt 0:00:44]} 38. b6 {[%emt 0:00:23]} Kd6 {[%emt 0:00:06]} 39. Rb5 {[%emt 0:01:37]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.17"]
[Round "5.6"]
[White "Ivanov, Sergey"]
[Black "Chanda, Sandipan"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2496"]
[BlackElo "2516"]
[Annotator "ChessBase"]
[PlyCount "56"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} f5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} e6 {[%emt 0:00:02]} 4. Qc2 {[%emt 0:00:11]} b6 {[%emt 0:00:16]} 5. e3 {[%emt 0:00:26]} Bb7 {[%emt 0:00:10]} 6. Nge2 {[%emt 0:00:37]} Bd6 {[%emt 0:01:38]} 7. a3 {[%emt 0:03:38]} O-O {[%emt 0:01:10]} 8. b4 {[%emt 0:00:17]} c5 {[%emt 0:01:57]} 9. b5 {[%emt 0:02:33]} cxd4 {[%emt 0:17:30]} 10. Nxd4 {[%emt 0:06:47]} Qc7 {[%emt 0:08:01]} 11. Nf3 {[%emt 0:19:51]} Ng4 {[%emt 0:01:56]} 12. Bb2 {[%emt 0:08:13]} Nxh2 {[%emt 0:09:06]} 13. Nxh2 {[%emt 0:00:35]} Bxh2 {[%emt 0:00:06]} 14. O-O-O {[%emt 0:00:51]} Be5 {[%emt 0:00:11]} 15. f4 {[%emt 0:01:17]} Bf6 {[%emt 0:00:22]} 16. Rh2 {[%emt 0:01:40]} Qc5 {[%emt 0:07:08]} 17. Rh3 {[%emt 0:04:53]} a6 {[%emt 0:01:10]} 18. g4 {[%emt 0:05:10]} axb5 {[%emt 0:01:16]} 19. g5 {[%emt 0:03:12]} Be4 {[%emt 0:01:27]} 20. Bd3 {[%emt 0:04:02]} Bxd3 {[%emt 0:03:57]} 21. Rxd3 {[%emt 0:00:36]} Bxc3 {[%emt 0:00:21]} 22. Rxc3 {[%emt 0:03:12]} b4 {[%emt 0:01:00]} 23. axb4 {[%emt 0:02:01]} Qxb4 {[%emt 0:00:06]} 24. Qh2 {[%emt 0:03:12]} Ra2 {[%emt 0:01:14]} 25. e4 {[%emt 0:06:53]} Nc6 {[%emt 0:06:23]} 26. exf5 {[%emt 0:01:00]} Rfa8 {[%emt 0:04:17]} 27. Rxh7 {[%emt 0:03:41]} Ra1+ {[%emt 0:00:38]} 28. Kc2 {[%emt 0:00:10]} Qxb2+ {[%emt 0:00:16]} 0-1

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.17"]
[Round "5.7"]
[White "Ikonnikov, Vyacheslav"]
[Black "Van der Werf, Mark"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "2499"]
[BlackElo "2394"]
[Annotator "ChessBase"]
[PlyCount "61"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:03]} c5 {[%emt 0:00:00]} 4. d5 {[%emt 0:00:30]} exd5 {[%emt 0:00:00]} 5. cxd5 {[%emt 0:00:04]} d6 {[%emt 0:00:00]} 6. Nc3 {[%emt 0:00:17]} g6 {[%emt 0:00:05]} 7. e4 {[%emt 0:00:49]} a6 {[%emt 0:00:09]} 8. h3 {[%emt 0:00:40]} b5 {[%emt 0:00:15]} 9. Bd3 {[%emt 0:00:34]} Bg7 {[%emt 0:00:14]} 10. O-O {[%emt 0:00:42]} O-O {[%emt 0:00:09]} 11. Re1 {[%emt 0:03:26]} Re8 {[%emt 0:01:00]} 12. Bf4 {[%emt 0:02:11]} Bb7 {[%emt 0:03:22]} 13. a3 {[%emt 0:05:21]} Qb6 {[%emt 0:00:15]} 14. Qd2 {[%emt 0:02:07]} Nbd7 {[%emt 0:00:07]} 15. b4 {[%emt 0:00:53]} Rac8 {[%emt 0:00:28]} 16. Rac1 {[%emt 0:00:07]} Re7 {[%emt 0:00:29]} 17. Be3 {[%emt 0:19:22]} Qd8 {[%emt 0:00:18]} 18. Bh6 {[%emt 0:03:20]} Bh8 {[%emt 0:01:27]} 19. Bg5 {[%emt 0:01:29]} Re8 {[%emt 0:05:33]} 20. Bb1 {[%emt 0:20:01]} Bg7 {[%emt 0:04:12]} 21. Ne2 {[%emt 0:06:52]} Qe7 {[%emt 0:12:42]} 22. Ng3 {[%emt 0:00:26]} Qf8 {[%emt 0:00:10]} 23. Bf4 {[%emt 0:08:16]} Nb6 {[%emt 0:09:26]} 24. Ba2 {[%emt 0:01:13]} Nfd7 {[%emt 0:01:02]} 25. h4 {[%emt 0:01:01]} Na4 {[%emt 0:07:15]} 26. bxc5 {[%emt 0:02:59]} Rxc5 {[%emt 0:03:45]} 27. Rxc5 {[%emt 0:02:05]} Naxc5 {[%emt 0:02:16]} 28. h5 {[%emt 0:00:36]} Qe7 {[%emt 0:19:16]} 29. Bg5 {[%emt 0:02:30]} Bf6 {[%emt 0:03:26]} 30. Bxf6 {[%emt 0:01:08]} Qxf6 {[%emt 0:00:12]} 31. Re3 {[%emt 0:07:57]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.17"]
[Round "5.8"]
[White "Suvrajit, Saha"]
[Black "Beerdsen, Thomas"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2189"]
[BlackElo "2497"]
[Annotator "ChessBase"]
[PlyCount "82"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} e6 {[%emt 0:01:42]} 2. c4 {[%emt 0:00:31]} Nf6 {[%emt 0:00:44]} 3. Nf3 {[%emt 0:00:09]} Bb4+ {[%emt 0:01:22]} 4. Bd2 {[%emt 0:00:07]} c5 {[%emt 0:00:22]} 5. dxc5 {[%emt 0:02:47]} Bxc5 {[%emt 0:00:09]} 6. Nc3 {[%emt 0:00:11]} O-O {[%emt 0:01:31]} 7. e3 {[%emt 0:00:11]} Nc6 {[%emt 0:03:45]} 8. a3 {[%emt 0:01:01]} d5 {[%emt 0:03:46]} 9. cxd5 {[%emt 0:06:25]} exd5 {[%emt 0:00:08]} 10. Be2 {[%emt 0:00:06]} Bg4 {[%emt 0:02:51]} 11. O-O {[%emt 0:00:35]} Qe7 {[%emt 0:02:11]} 12. Nd4 {[%emt 0:09:00]} Bxe2 {[%emt 0:02:34]} 13. Nxc6 {[%emt 0:03:15]} bxc6 {[%emt 0:01:30]} 14. Qxe2 {[%emt 0:03:02]} Bd6 {[%emt 0:05:17]} 15. Rfd1 {[%emt 0:03:59]} Rfb8 {[%emt 0:05:13]} 16. Be1 {[%emt 0:00:58]} Rb3 {[%emt 0:00:34]} 17. Rac1 {[%emt 0:01:30]} Rab8 {[%emt 0:00:34]} 18. Rc2 {[%emt 0:00:08]} h5 {[%emt 0:01:39]} 19. f3 {[%emt 0:08:32]} Nd7 {[%emt 0:07:44]} 20. Bf2 {[%emt 0:04:23]} Be5 {[%emt 0:02:35]} 21. Na4 {[%emt 0:04:10]} Qf6 {[%emt 0:19:32]} 22. Qa6 {[%emt 0:10:18]} Bxb2 {[%emt 0:06:40]} 23. Rxc6 {[%emt 0:00:26]} Qd8 {[%emt 0:01:40]} 24. Nxb2 {[%emt 0:05:28]} Rxb2 {[%emt 0:00:07]} 25. Bg3 {[%emt 0:06:13]} Rb1 {[%emt 0:08:08]} 26. Qf1 {[%emt 0:06:34]} Rxd1 {[%emt 0:01:53]} 27. Qxd1 {[%emt 0:00:02]} Rb6 {[%emt 0:02:47]} 28. Rc1 {[%emt 0:09:07]} Qg5 {[%emt 0:02:59]} 29. Bf4 {[%emt 0:03:07]} Qf5 {[%emt 0:00:32]} 30. Rc8+ {[%emt 0:02:54]} Nf8 {[%emt 0:01:00]} 31. Rb8 {[%emt 0:05:17]} Rxb8 {[%emt 0:01:34]} 32. Bxb8 {[%emt 0:00:02]} a6 {[%emt 0:00:33]} 33. Ba7 {[%emt 0:02:03]} Qd7 {[%emt 0:02:16]} 34. Bd4 {[%emt 0:00:18]} Ne6 {[%emt 0:00:15]} 35. Qc2 {[%emt 0:01:19]} Qb5 {[%emt 0:00:49]} 36. Qc8+ {[%emt 0:00:39]} Kh7 {[%emt 0:00:07]} 37. Qc2+ {[%emt 0:00:11]} Kh6 {[%emt 0:01:51]} 38. h4 {[%emt 0:01:26]} Qa5 {[%emt 0:01:33]} 39. Qc3 {[%emt 0:00:52]} Qa4 {[%emt 0:02:53]} 40. Kf2 {[%emt 0:01:11]} a5 {[%emt 0:02:14]} 41. Qd3 {[%emt 0:03:42]} Nxd4 {[%emt 0:03:47]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.17"]
[Round "5.9"]
[White "Lai, Hing Ting"]
[Black "Roorda, Thijs"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2460"]
[BlackElo "2108"]
[Annotator "ChessBase"]
[PlyCount "90"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 {[%emt 0:00:00]} f5 {[%emt 0:00:00]} 2. d3 {[%emt 0:00:00]} d6 {[%emt 0:03:05]} 3. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:19]} 4. Nc3 {[%emt 0:00:22]} Nf6 {[%emt 0:00:24]} 5. exf5 {[%emt 0:00:14]} Bxf5 {[%emt 0:00:36]} 6. d4 {[%emt 0:00:05]} e4 {[%emt 0:09:18]} 7. Nh4 {[%emt 0:00:07]} Qd7 {[%emt 0:01:31]} 8. Bg5 {[%emt 0:14:46]} Be7 {[%emt 0:02:27]} 9. Bxf6 {[%emt 0:04:47]} Bxf6 {[%emt 0:01:18]} 10. Nxf5 {[%emt 0:00:06]} Qxf5 {[%emt 0:00:05]} 11. g4 {[%emt 0:00:42]} Qa5 {[%emt 0:04:47]} 12. g5 {[%emt 0:01:56]} Bxg5 {[%emt 0:05:55]} 13. Bb5+ {[%emt 0:04:04]} Kd8 {[%emt 0:03:57]} 14. Qg4 {[%emt 0:06:52]} Bf6 {[%emt 0:02:18]} 15. Qxe4 {[%emt 0:00:42]} a6 {[%emt 0:03:08]} 16. Ba4 {[%emt 0:07:11]} c6 {[%emt 0:06:03]} 17. O-O-O {[%emt 0:00:10]} Nd7 {[%emt 0:01:48]} 18. Qe6 {[%emt 0:05:34]} Kc7 {[%emt 0:15:01]} 19. h4 {[%emt 0:00:59]} Rae8 {[%emt 0:03:02]} 20. Qg4 {[%emt 0:00:05]} h5 {[%emt 0:02:59]} 21. Qg6 {[%emt 0:02:39]} Re7 {[%emt 0:03:54]} 22. Kb1 {[%emt 0:01:24]} Nf8 {[%emt 0:01:10]} 23. Qg3 {[%emt 0:04:27]} Qf5 {[%emt 0:05:21]} 24. Bb3 {[%emt 0:01:59]} Ng6 {[%emt 0:02:20]} 25. f3 {[%emt 0:03:37]} Re3 {[%emt 0:01:26]} 26. Rhg1 {[%emt 0:05:06]} Nxh4 {[%emt 0:06:24]} 27. Ne4 {[%emt 0:00:16]} Rd8 {[%emt 0:00:33]} 28. Nxf6 {[%emt 0:00:40]} Qxf6 {[%emt 0:00:06]} 29. Qxg7+ {[%emt 0:00:20]} Qxg7 {[%emt 0:00:25]} 30. Rxg7+ {[%emt 0:00:02]} Rd7 {[%emt 0:00:39]} 31. Rxd7+ {[%emt 0:02:37]} Kxd7 {[%emt 0:00:05]} 32. Bf7 {[%emt 0:00:05]} Nf5 {[%emt 0:06:40]} 33. Bxh5 {[%emt 0:00:10]} Nxd4 {[%emt 0:00:05]} 34. Rg1 {[%emt 0:03:54]} Nxf3 {[%emt 0:01:11]} 35. Bxf3 {[%emt 0:00:06]} Rxf3 {[%emt 0:00:06]} 36. Rg7+ {[%emt 0:00:11]} Ke6 {[%emt 0:02:05]} 37. b3 {[%emt 0:00:13]} Rf7 {[%emt 0:00:06]} 38. Rg8 {[%emt 0:00:14]} d5 {[%emt 0:01:30]} 39. Kb2 {[%emt 0:00:25]} Kd6 {[%emt 0:00:21]} 40. Rg6+ {[%emt 0:02:27]} Kc5 {[%emt 0:00:22]} 41. Rg5 {[%emt 0:30:10]} a5 {[%emt 0:32:19]} 42. a4 {[%emt 0:03:27]} Re7 {[%emt 0:03:47]} 43. Rh5 {[%emt 0:01:37]} b5 {[%emt 0:00:37]} 44. axb5 {[%emt 0:00:40]} cxb5 {[%emt 0:00:50]} 45. Rh8 {[%emt 0:00:14]} Rd7 {[%emt 0:00:47]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.17"]
[Round "5.10"]
[White "De Lange, Steyn"]
[Black "Bueno, Mark"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "1914"]
[BlackElo "1976"]
[Annotator "NA"]
[PlyCount "119"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:27]} d5 {[%emt 0:00:00]} 4. cxd5 {[%emt 0:00:09]} exd5 {[%emt 0:00:01]} 5. g3 {[%emt 0:00:09]} Be7 {[%emt 0:01:38]} 6. Bg2 {[%emt 0:00:37]} O-O {[%emt 0:00:13]} 7. d3 {[%emt 0:00:26]} c6 {[%emt 0:07:13]} 8. O-O {[%emt 0:00:30]} Re8 {[%emt 0:01:04]} 9. Qc2 {[%emt 0:02:44]} Na6 {[%emt 0:01:34]} 10. a3 {[%emt 0:07:52]} Nc7 {[%emt 0:09:02]} 11. e4 {[%emt 0:01:21]} Bd6 {[%emt 0:15:11]} 12. Be3 {[%emt 0:17:10]} Qe7 {[%emt 0:21:06]} 13. Rfe1 {[%emt 0:11:08]} dxe4 {[%emt 0:02:01]} 14. dxe4 {[%emt 0:05:15]} Ng4 {[%emt 0:09:36]} 15. b4 {[%emt 0:21:21]} Nxe3 {[%emt 0:05:49]} 16. Rxe3 {[%emt 0:03:09]} Ne6 {[%emt 0:08:52]} 17. Rd1 {[%emt 0:00:53]} Bc7 {[%emt 0:00:34]} 18. Red3 {[%emt 0:02:25]} a5 {[%emt 0:00:43]} 19. b5 {[%emt 0:01:24]} Nc5 {[%emt 0:01:06]} 20. R3d2 {[%emt 0:01:23]} Bg4 {[%emt 0:00:45]} 21. bxc6 {[%emt 0:02:20]} bxc6 {[%emt 0:00:03]} 22. h3 {[%emt 0:02:11]} Bxf3 {[%emt 0:00:12]} 23. Bxf3 {[%emt 0:00:51]} Be5 {[%emt 0:00:26]} 24. Na4 {[%emt 0:01:04]} Nxa4 {[%emt 0:06:03]} 25. Qxa4 {[%emt 0:00:33]} h6 {[%emt 0:04:10]} 26. Kg2 {[%emt 0:05:39]} c5 {[%emt 0:02:00]} 27. Rd7 {[%emt 0:00:55]} Qf6 {[%emt 0:00:25]} 28. Qc4 {[%emt 0:00:44]} Rac8 {[%emt 0:02:41]} 29. R1d5 {[%emt 0:01:17]} Bd4 {[%emt 0:00:12]} 30. R5d6 {[%emt 0:00:13]} Qe5 {[%emt 0:01:33]} 31. Qxf7+ {[%emt 0:01:14]} Kh7 {[%emt 0:00:03]} 32. Rd5 {[%emt 0:06:00]} Qe6 {[%emt 0:00:26]} 33. Qxe6 {[%emt 0:00:51]} Rxe6 {[%emt 0:00:01]} 34. Bg4 {[%emt 0:00:24]} Rf6 {[%emt 0:00:29]} 35. Rf5 {[%emt 0:01:08]} Rb8 {[%emt 0:00:37]} 36. Rxf6 {[%emt 0:00:14]} Bxf6 {[%emt 0:00:07]} 37. Bf5+ {[%emt 0:01:01]} Kg8 {[%emt 0:00:05]} 38. Ra7 {[%emt 0:00:51]} Bc3 {[%emt 0:01:15]} 39. Rc7 {[%emt 0:00:41]} Bd4 {[%emt 0:00:15]} 40. Rc8+ {[%emt 0:00:29]} Rxc8 {[%emt 0:00:27]} 41. Bxc8 {[%emt 0:30:04]} a4 {[%emt 0:30:21]} 42. Bd7 {[%emt 0:00:51]} Bb2 {[%emt 0:00:06]} 43. Bxa4 {[%emt 0:00:06]} Bxa3 {[%emt 0:00:02]} 44. Bb3+ {[%emt 0:01:18]} Kf8 {[%emt 0:00:05]} 45. Kf3 {[%emt 0:00:29]} Ke7 {[%emt 0:00:25]} 46. Kf4 {[%emt 0:00:25]} Bb2 {[%emt 0:01:14]} 47. e5 {[%emt 0:00:00]} Bd4 {[%emt 0:00:00]} 48. f3 {[%emt 0:00:00]} Bf2 {[%emt 0:00:00]} 49. g4 {[%emt 0:00:00]} Bh4 {[%emt 0:00:00]} 50. Kf5 {[%emt 0:00:00]} Bg3 {[%emt 0:00:00]} 51. f4 {[%emt 0:00:00]} Bh2 {[%emt 0:00:00]} 52. e6 {[%emt 0:00:00]} Bg1 {[%emt 0:00:00]} 53. Kg6 {[%emt 0:00:00]} Be3 {[%emt 0:00:00]} 54. Kxg7 {[%emt 0:00:00]} Bxf4 {[%emt 0:00:00]} 55. h4 {[%emt 0:00:00]} Bg3 {[%emt 0:00:00]} 56. Kxh6 {[%emt 0:00:00]} Bxh4 {[%emt 0:00:00]} 57. g5 {[%emt 0:00:00]} Kf8 {[%emt 0:00:00]} 58. Kg6 {[%emt 0:00:00]} Bf2 {[%emt 0:00:00]} 59. Kf5 {[%emt 0:00:00]} Bd4 {[%emt 0:00:00]} 60. Ke4 {[%emt 0:00:00]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.18"]
[Round "6.6"]
[White "Chanda, Sandipan"]
[Black "Van der Werf, Mark"]
[Result "1-0"]
[ECO "E52"]
[WhiteElo "2516"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,97,1,5,0,0,-2,0,-7,0,-18,-21,-31,125,148,143,119,118,111,103,89,79,91,87,71,106,90,125,121,200,202,210,207,207,184,229,229,229,229,372,358,372,372,393,393,418,411,409,401,411,411,481,429,501,493,468,363,398,398,398,398,402,376,452,411,475,470,469,465,464,427,445,413,406,405,374,348,29974,29976,29976,29977,29977,29978,29979,29980]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 b6 6. Nf3 Bb7 7. Bd3 d5 8. cxd5 exd5 9. Rc1 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} Be7 10. O-O Nbd7 (10... c5 11. dxc5 bxc5 12. Na4 Nbd7 13. Bc3 Ne4 14. Bxe4 dxe4 15. Ne5 Nxe5 16. Bxe5 Qxd1 17. Rfxd1 {½-½ (30) Wang,Y (2690)-Cheparinov,I (2702) China 2018}) 11. Qc2 {The position is equal.} c5 12. Ne5 c4 13. Bf5 Nxe5 $146 (13... g6 $1 $15 {keeps the upper hand.} 14. Nxd7 Nxd7) ({Predecessor:} 13... g6 14. Bh3 Nxe5 15. dxe5 Nd7 16. f4 Nc5 17. Ne2 Nd3 18. Rcd1 {0-1 (63) Kumar,N (2317)-Gaisinsky,A (1965) Montevideo 2017}) 14. dxe5 $16 Ne4 15. Rcd1 {[%cal Rc3e4]} Qc7 16. Nxe4 dxe4 17. Bxe4 Bxe4 18. Qxe4 b5 19. Bc3 Rad8 20. f4 Rxd1 21. Rxd1 {e6 is the strong threat.} Rd8 (21... b4 $16) 22. Rxd8+ $18 Qxd8 23. Bd4 Qc8 24. Bxa7 Qa6 25. Qa8+ Bf8 26. Qb8 $1 {Threatens to win with Bc5.} Qa5 (26... Qc6 {keeps fighting.} 27. a3 c3 28. bxc3 Qxc3 29. Qxb5 Qxa3) 27. h3 {Hoping for Bc5.} b4 {Black wants to play ...c3.} 28. Bd4 h5 29. f5 c3 {[#]} 30. bxc3 $1 bxc3 {aiming for ...c2.} 31. Qb3 c2 32. Qxc2 Qe1+ 33. Kh2 h4 34. Qc3 Qf2 35. Qd3 Qxa2 36. Qe4 Qf2 {intending ...Qg3+.} 37. Qf4 Qe1 38. e4 Qb4 39. Bf2 f6 40. Qxh4 fxe5 41. Qg4 Be7 42. h4 Qd2 43. Bg3 Bf6 44. h5 Qe3 45. Bh4 Kh8 $2 (45... Bxh4 $18 46. Qxh4 Qh6) 46. Bxf6 {White mates.} gxf6 {[#]} 47. h6 $1 Qxh6+ {[#]} 48. Qh3 $1 Qxh3+ 49. Kxh3 {Accuracy: White = 87%, Black = 39%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.18"]
[Round "6.7"]
[White "Kollen, Zyon"]
[Black "Suvrajit, Saha"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "2362"]
[BlackElo "2189"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,86,-3,-15,-10,-19,20,20,27,16,20,16,16,-12,8,20,10,-43,-2,0,-10,-82,-75,-79,-62,-81,-85,-87,-90,-102,-93,-101,-75,-91,-71,-75,-71,-80,-80,-81,-81,-81,-81,-106,-108,-110,-83,-241,-243,-234,-239,-243,-183,-177,-200,-205,-59,-220,-216,-300,-227,-350,-341,-387,-364,-505,-497,-485,-494,-514,-508,-793,-778,-741,-699]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 5. Bg2 d6 6. d3 a6 7. Be3 Bxe3 8. fxe3 Bg4 {C26: Vienna Game: 2...Nf6, sidelines} (8... Ng4 9. Qd2 f5 10. exf5 Bxf5 11. O-O-O O-O 12. h3 Nh6 13. g4 Bg6 14. e4 Nd4 15. Rdf1 Nxf3 16. Bxf3 {½-½ (41) Paichadze,L (2554)-Sanikidze,T (2510) Tbilisi 2017}) 9. Qd2 Bxf3 $146 ({Predecessor:} 9... Qd7 10. O-O-O O-O-O 11. Rdf1 Kb8 12. Nd5 Ne8 13. Nh4 f6 14. Rf2 Ne7 15. Nc3 Be6 16. Rhf1 {0-1 (34) Ilic,L (2132)-Kralevski,A (2209) Skopje 2015}) 10. Bxf3 h5 {The position is equal.} 11. O-O-O Ne7 12. d4 c6 13. Na4 Qc7 14. dxe5 dxe5 15. Qd6 (15. h3 $11) 15... Qxd6 $15 16. Rxd6 Rd8 17. Rhd1 (17. Rd3 $11) 17... Rxd6 $17 18. Rxd6 Nc8 $36 {[%mdl 2048] Black is pushing.} 19. Rd1 {[#]} Ke7 $1 20. Nc5 Nd6 21. Nd3 Nd7 ({Of course not} 21... Nfxe4 22. Nxe5 h4 23. g4 $15) 22. h4 Rh6 23. Kd2 a5 24. Ke2 b6 25. a3 Rh8 26. b3 f6 27. a4 g6 28. c3 Rb8 29. c4 Nb7 30. g4 $2 (30. b4 $17 {might work better.}) 30... hxg4 $19 31. Bxg4 Ndc5 32. Bf3 Nxb3 33. Rg1 Kf7 34. h5 g5 ({Black should play} 34... N3c5 $19 {...gxh5 is the strong threat.} 35. Nxc5 Nxc5 36. Rxg6 Rh8) 35. h6 $2 (35. Rd1 $15) 35... Kg6 36. Rh1 N3c5 37. Nf2 (37. Bh5+ $142 Kxh6 38. Bg4+ Kg7 39. Bf5) 37... Nd6 ({Not} 37... Nxa4 38. Ng4 $19) 38. Bg4 Ndxe4 39. Bh5+ Kh7 {[#] Threatens to win with ...Ng3+.Black is clearly winning.} 40. Nxe4 Nxe4 41. Kf3 f5 42. Bf7 (42. Kg2 $142 g4 43. Rf1) 42... g4+ 43. Kg2 Ng5 {Accuracy: White = 31%, Black = 71%.} 0-1

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.18"]
[Round "6.8"]
[White "Lai, Hing Ting"]
[Black "Ikonnikov, Vyacheslav"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2460"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,84,18,10,14,8,12,8,13,15,11,-14,34,27,34,36,32,-39,38,38,39,30,33,39,53,39,67,60,72,60,68,62,64,0,0,-14,-11,-22,-10,-14,-14,-4,-9,-5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-9,0,-39,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d6 6. Bd3 g6 {A45: Trompowsky Attack} 7. Ne2 Bg7 8. f4 (8. O-O O-O 9. f4 Qe7 10. e5 b6 11. Nd2 Bb7 12. Be4 Bxe4 13. Nxe4 Rd8 14. Qe1 {0-1 (62) Moiseenko,A (2667)-Wang,Y (2690) Riadh 2017}) 8... Qh4+ 9. g3 Qe7 10. Nd2 Nd7 11. e5 $146 ({Predecessor:} 11. Qa4 O-O 12. e5 dxe5 13. fxe5 Nb6 14. Qd1 {½-½ (31) Fernandes,A (2453)-Guillen Ramirez,J (2301) Ayamonte 2006}) 11... Nb6 12. Qc2 Bd7 13. c4 (13. Be4 $14) 13... Ba4 (13... dxe5 $15 14. dxe5 O-O-O) 14. b3 $14 Bc6 15. Be4 Bxe4 16. Nxe4 d5 17. Nc5 c6 18. Nd3 O-O 19. O-O Nd7 20. c5 g5 21. fxg5 ({White should try} 21. Rf3 $14) 21... hxg5 $11 22. Nf2 f6 23. exf6 Rxf6 24. Ng4 Rxf1+ 25. Rxf1 Rf8 26. Rxf8+ Nxf8 27. Kg2 Qf7 28. h3 Nd7 29. Ng1 Qf5 30. Qd2 e5 31. dxe5 Nxe5 32. Nxe5 Bxe5 33. Nf3 Bf6 34. Qe2 Kf7 35. g4 Qb1 36. Kg3 a6 37. Qd2 {The position is equal.} Qe4 38. Nxg5+ Bxg5 39. Qxg5 {[#] And now Qf4+ would win.} Qe1+ 40. Kg2 Qe2+ 41. Kg3 Qe1+ 42. Kg2 Qe2+ {Accuracy: White = 59%, Black = 44%.} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.18"]
[Round "6.9"]
[White "Beerdsen, Thomas"]
[Black "Van Vliet, Jeffrey"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2497"]
[BlackElo "2380"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,118,29,25,32,26,31,17,25,41,37,38,31,29,21,31,54,31,40,45,42,41,34,39,39,25,20,18,112,106,121,111,113,116,114,118,112,115,122,100,123,104,100,100,95,95,115,41,51,50,68,54,54,33,46,7,36,-11,14,-12,-14,-44,-38,-45,0,0,0,0,0,0,0,-38,-50,-35,-51,-54,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Qd3 Nf6 6. Be2 Nc6 {B41: Sicilian: Kan Variation: 5 c4} 7. Nxc6 bxc6 8. Nc3 d5 9. Qg3 d4 {White must now prevent ...Qa5.} 10. e5 Nd7 $1 11. Ne4 Qa5+ 12. c3 Qxe5 $146 ({Predecessor:} 12... dxc3 13. Nxc3 Qxe5 14. Bf4 Qf6 {½-½ (34) Karjakin,S (2721)-Mamedyarov,S (2725) Nalchik 2009}) 13. Qxe5 Nxe5 14. cxd4 Ng6 15. h4 Bb4+ 16. Kf1 h5 17. Ng3 {[%cal Be4g3,Bg3h5,Bh5f4,Bf4d3,Bd3e5][%mdl 32]} Be7 18. Nxh5 Nxh4 {[#]} (18... O-O $11 {keeps the balance.}) 19. g3 $1 $16 {[%cal Rg3h4]} g6 20. Nf4 $36 {[%mdl 2048] White is in control.} ({Don't play} 20. gxh4 $6 gxh5 21. Bf4 a5 $11) 20... g5 21. Nd3 Ng6 22. Rxh8+ Nxh8 23. Bf3 Bb7 24. Ne5 Rc8 25. Be3 f6 26. Nc4 Nf7 27. Rc1 Bd8 28. Bg4 (28. Bd2 $16) 28... Kd7 $14 29. Re1 Bc7 30. Bd2 Re8 31. Bb4 {Strongly threatening Bh5.} Nd6 32. Nd2 f5 33. Bf3 g4 34. Bg2 a5 35. Bc3 Ba6+ 36. Kg1 Nb5 37. Nb3 {Hoping for Nc5+.} Nxc3 38. Nc5+ Kd6 39. bxc3 Bc4 40. a3 Bb6 41. Na4 $1 {[%cal Ra4b6]} Ba7 42. Nb2 Bd5 (42... Bb3 $15) 43. Bxd5 $11 {The position is equal.} cxd5 {[%mdl 4096] Endgame KRB-KRN} 44. Nd3 Rc8 45. Nf4 Rxc3 46. Rxe6+ Kd7 47. Ra6 $1 {[%cal Ra6a7]} Bxd4 48. Rxa5 Kc6 {...Rxg3+ is the strong threat.} 49. Rxd5 Bxf2+ 50. Kxf2 {KRN-KR} Rf3+ 51. Ke2 {Threatens to win with Rd3.} Rxf4 $1 {KR-KR} 52. Re5 Rf3 53. Re6+ Kd5 54. Re3 {[#]} f4 $1 {[%mdl 512]} 55. Rxf3 gxf3+ 56. Kxf3 fxg3 57. Kxg3 Kc4 58. a4 Kb4 59. a5 Kxa5 {Accuracy: White = 63%, Black = 67%.} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.18"]
[Round "6.10"]
[White "Bueno, Mark"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1976"]
[BlackElo "1878"]
[Annotator "NA RC"]
[PlyCount "103"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:09]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:07]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:05]} e5 {[%emt 0:00:00]} 6. Ndb5 {[%emt 0:00:42]} d6 {[%emt 0:00:02]} 7. Bg5 {[%emt 0:00:58]} a6 {[%emt 0:00:04]} 8. Na3 {[%emt 0:00:20]} b5 {[%emt 0:00:04]} 9. Nd5 {[%emt 0:00:05]} Be7 {[%emt 0:00:05]} 10. Bxf6 {[%emt 0:02:34]} Bxf6 {[%emt 0:00:05]} 11. c3 {[%emt 0:00:07]} O-O {[%emt 0:00:30]} 12. Be2 {[%emt 0:00:05]} Bg5 {[%emt 0:01:47]} 13. Bg4 {[%emt 0:06:04] B33: Sicilian: Pelikan and Sveshnikov Variations} (13. Nc2 Ne7 14. Nxe7+ Qxe7 15. O-O Bb7 16. Qd3 d5 17. exd5 Rad8 18. c4 bxc4 19. Qa3 Qc7 20. Rfd1 Bxd5 21. Qxa6 Ra8 {1-0 (72) Tukhaev,A (2527)-Carlsen,M (2835) St Petersburg 2018}) 13... Be6 {[%emt 0:06:14]} 14. O-O {[%emt 0:01:28]} Rb8 {[%emt 0:08:36]} 15. Nc2 {[%emt 0:00:41]} Qd7 {[%emt 0:05:56]} 16. Bf3 {[%emt 0:09:59]} a5 {[%emt 0:12:52]} 17. Qd3 {[%emt 0:08:06]} b4 {[%emt 0:05:59]} 18. c4 {[%emt 0:04:09]} Ne7 $146 {[%emt 0:16:48]} ({Predecessor:} 18... Qa7 19. b3 Qc5 20. Nc7 Qb6 21. Nb5 Na7 22. Nxa7 Qxa7 {½-½ (52) Marek,M (2398)-Kernazhitsky,L (2265) Tatranske Zruby 2015}) 19. Nxe7+ {[%emt 0:03:00]} Bxe7 {[%emt 0:02:06]} 20. Ne3 {[%emt 0:03:33]} Rfc8 {[%emt 0:01:08]} 21. b3 {[%emt 0:01:48]} Rc5 {[%emt 0:04:41]} 22. Rfd1 {[%emt 0:10:40]} g6 {[%emt 0:01:48]} 23. Rd2 {[%emt 0:11:18]} Rbc8 {[%emt 0:05:54]} 24. Rad1 {[%emt 0:00:40]} Kg7 $11 {[%emt 0:01:15]} 25. Qe2 {[%emt 0:07:31]} R8c7 {[%emt 0:03:53]} 26. g3 {[%emt 0:07:02]} Ra7 {[%emt 0:02:18]} 27. Bg2 {[%emt 0:00:49]} Qc8 {[%emt 0:01:43]} 28. Rf1 {[%emt 0:00:51]} f6 {[%emt 0:01:36]} 29. Qd1 {[%emt 0:05:08]} Bf8 {[%emt 0:01:26]} 30. f4 {[%emt 0:03:48]} Bf7 {[%emt 0:01:39]} 31. fxe5 {[%emt 0:01:17]} fxe5 {[%emt 0:01:58]} 32. Rdf2 {[%emt 0:00:36]} Rcc7 {[%emt 0:06:48]} 33. Nd5 {[%emt 0:00:41]} Rcb7 {[%emt 0:00:15]} 34. h4 {[%emt 0:01:53]} Qc5 {[%emt 0:03:09]} 35. Qf3 {[%emt 0:02:13]} Rb8 {[%emt 0:00:44]} 36. h5 {[%emt 0:05:45]} gxh5 {[%emt 0:01:36]} 37. Nf6 {[%emt 0:01:43]} Kh8 {[%emt 0:03:10]} 38. Nxh5 {[%emt 0:00:32]} Bxh5 {[%emt 0:00:05]} 39. Qxh5 {[%emt 0:00:04]} Bg7 {[%emt 0:00:12]} 40. Kh2 {[%emt 0:00:12]} Qc8 {[%emt 0:00:41]} 41. Bh3 {[%emt 0:31:02]} Qe8 {[%emt 0:05:00]} 42. Qd1 {[%emt 0:00:00]} Rd8 {[%emt 0:03:19]} 43. Bf5 {[%emt 0:00:00]} Bf6 {[%emt 0:08:46]} 44. Kg2 {[%emt 0:00:00]} h6 {[%emt 0:01:30]} 45. Bd7 {[%emt 0:00:00]} Qxd7 {[%emt 0:03:46]} 46. Rxf6 {[%emt 0:00:00]} Qh7 {[%emt 0:00:29]} 47. R1f5 {[%emt 0:00:00]} Rg7 {[%emt 0:08:06]} 48. Qh5 {[%emt 0:00:00]} Rdg8 {[%emt 0:02:41]} 49. Rxh6 {[%emt 0:00:00]} Rxg3+ {[%emt 0:00:05]} 50. Kf2 {[%emt 0:00:00]} Rg2+ {[%emt 0:00:23]} 51. Ke1 {[%emt 0:00:00]} Rg1+ {[%emt 0:00:40]} 52. Rf1 {[%emt 0:00:00]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.19"]
[Round "7.6"]
[White "Suvrajit, Saha"]
[Black "Chanda, Sandipan"]
[Result "1/2-1/2"]
[ECO "A81"]
[WhiteElo "2189"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,43,50,50,60,18,47,8,40,-35,-34,-47,-43,-74,-37,-44,-60,-68,-48,-54,-43,-54,-46,-37,-31,-32,-41,-32,-38,-43,-36,-54,-44,-40,-17,-52,-49,-72,-81,-105,-110,-114,-123,-198,-191,-177,-224,-237,-197,-404,-120,-126,-117,-116,-113,-247,-159,-155,-149,-147,-141,-159,-146,-125,0,-77,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nh3 d6 (4... Be7 5. O-O O-O 6. Nd2 Nc6 7. c3 d6 8. b4 Qe8 9. a4 Kh8 10. Nc4 Nd8 11. b5 Nf7 12. Ng5 Nd5 13. Nxf7+ Qxf7 {1-0 (84) Aleksandrov,A (2617)-Azarov,S (2613) Warsaw 2008}) 5. O-O g6 6. Nc3 $146 {A81: Dutch Defence: 2 g3} ({Predecessor:} 6. b4 Bg7 7. Bb2 O-O 8. c4 Qe7 9. Qb3 e5 10. c5+ Be6 11. d5 Bf7 12. Ng5 {1-0 (53) Harakis,A (2238)-Bellin,R (2355) England 2013}) 6... d5 7. Bf4 c6 8. Rb1 {White is slightly better.} Bg7 9. b4 ({White should play} 9. f3 $14) 9... O-O $15 10. Qd2 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4][%mdl 32]} 11. Bh6 Nb6 12. Bxg7 Kxg7 13. Nf4 Qd6 14. Rfd1 Nc4 15. Qc1 a5 16. b5 $1 Bd7 17. bxc6 Bxc6 18. Nb5 Bxb5 $1 19. Rxb5 b6 20. Nd3 Rac8 {[%cal Ba8c8,Bc8c6,Bc6c4][%mdl 32]} 21. c3 Rc6 22. Nb2 Rfc8 23. Nxc4 Rxc4 24. Qb2 R8c6 ({But not} 24... Rxc3 $6 25. Rxb6 R3c6 26. Rb7+ R8c7 27. Rb1 $11) 25. Rc1 Qc7 26. e3 (26. Bf3 $17 {might work better.}) 26... Rxc3 $19 27. Rxc3 Rxc3 28. Bf3 Rc2 ({Resist} 28... Rc1+ 29. Kg2 $17) 29. Qb3 $2 (29. Qa3) 29... Nd7 $2 (29... Rc1+ $19 {has better winning chances.} 30. Kg2 Rc3) 30. Kg2 Kf7 31. Bd1 Rc1 32. h4 (32. Be2 $17) 32... Ra1 {Hoping for ...Qc1.} 33. Bc2 Qc4 {aiming for ...Qf1+.} 34. Bb1 {With the idea Qb2.} a4 $1 {[%cal Ra4b3,Ba5a4,Ba4a3][%mdl 32]} 35. Qb2 {[#] And now Rb4 would win.} a3 $1 {[%cal Ra3b2][%mdl 512]} 36. Qb3 (36. Qxa3 Qxb5) 36... Qe2 ({Black should try} 36... h6 $1 $17 {Threatens to win with ...g5.} 37. Rb4 Qc1) 37. Rb4 {[#]} (37. Qa4 $11 {remains equal.} f4 38. Rb2 $3 {[%mdl 512]}) 37... Nf6 (37... f4 $1 $17 {[%cal Rf4f3][%mdl 512] ( -> ...f3+)} 38. exf4 Nf6 39. Rxb6 Ne4 40. Rb7+ Kf6) 38. Qc3 $11 {[#]The position is equal.} g5 $1 {[%mdl 512]} 39. h5 {[#]} (39. Qxa1 $2 {is the wrong capture.} Ng4 $1 $19 {[%mdl 512]}) (39. hxg5 Ne4) 39... Ne4 $1 {[%mdl 576] Double Attack} 40. Qc7+ Kg8 41. Qd8+ {[#]} Kf7 $1 42. Qd7+ {[#]} Kf6 $1 43. Qd8+ {[#]} Kf7 $1 44. Qd7+ {Accuracy: White = 52%, Black = 52%.} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.19"]
[Round "7.7"]
[White "Ikonnikov, Vyacheslav"]
[Black "Kollen, Zyon"]
[Result "1-0"]
[ECO "E52"]
[WhiteElo "2499"]
[BlackElo "2362"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,73,8,12,54,16,39,24,64,65,65,61,60,60,61,47,55,63,112,112,161,156,368,166,487,177,187,183,270,286,286,284,286,286,286,286,286,286,281,273,361,147,273,170,288,288,288,288,775,774,762,762,709,697]} 1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. Nc3 Bb4 5. Bd2 Bb7 6. e3 O-O 7. Bd3 c5 8. a3 cxd4 9. axb4 dxc3 10. Bxc3 d5 11. O-O dxc4 12. Bxc4 Nd5 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} (12... Qe7 13. Qd4 Bxf3 14. gxf3 Nc6 15. Qh4 Nxb4 16. Kh1 Nbd5 17. Be5 Rfd8 18. Rg1 Ne8 19. Qh6 g6 20. Bb5 {0-1 (37) Jarmula,L (2483)-Vovk,Y (2573) Lvov 2019}) 13. Bd2 $146 (13. Bxd5 $5 Bxd5 14. Qd4 $14) ({Predecessor:} 13. Be5 Nc6 14. Bxd5 exd5 15. Bc3 a6 16. Qd3 b5 17. Rfd1 Re8 18. Qf5 Ne7 19. Qe5 f6 20. Qe6+ Kh8 21. Bxf6 gxf6 22. Qxf6+ Kg8 23. Ng5 {1-0 (23) Pierecker,M (2270)-Lickleder,A (2195) Bayern 2010}) 13... a6 14. b5 a5 {White has an edge.} 15. e4 Nf6 16. e5 Ne4 17. Bf4 $36 {[%mdl 2048] Black is under pressure.} Nd7 18. Qe2 Nec5 19. Rfd1 h6 20. Rd6 Bxf3 21. Qxf3 ({Much less strong is} 21. gxf3 $6 Qe7 $14) 21... Qh4 $2 {[#]} (21... Rb8 $16 {was called for.} 22. Qg4 Kh8) 22. Bf1 (22. b4 $142 $1 {[%mdl 512]}) 22... Rfd8 $2 {[#]} (22... Rad8 23. Rad1 Qe7) 23. Rad1 $2 (23. b4 $1 {[%mdl 512]}) 23... Rab8 24. R1d4 Nf8 (24... Qe7 {was necessary.} 25. Qg3 Kh8) 25. Be3 $18 Qe7 26. Rxd8 $1 Rxd8 27. Rxd8 Qxd8 28. Bxc5 $1 bxc5 29. Qc6 $1 Nd7 {[#]} 30. Qd6 $1 Qc8 {[#]} 31. g3 (31. b6 $1 $18 {and the rest is easy.}) 31... c4 (31... Qb7 $16 {is a better defense.}) 32. Bg2 {And now b6 would win.} a4 (32... g6 $142 33. b6 Nxb6) 33. b6 Nxb6 34. Qxb6 a3 $2 (34... c3 35. bxc3 Qxc3 36. Qd8+ Kh7) 35. bxa3 {White is clearly winning.} c3 36. Bc6 Qf8 37. Be4 {Accuracy: White = 47%, Black =  9%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.19"]
[Round "7.8"]
[White "Van der Werf, Mark"]
[Black "Beerdsen, Thomas"]
[Result "1/2-1/2"]
[ECO "E54"]
[WhiteElo "2394"]
[BlackElo "2497"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,38,0,0,0,0,0,-7,-7,-9,-12,-27,-22,-22,0,-40,-43,-36,4,4,12]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4 b6 10. Bg5 Bb7 11. Ne5 h6 {E54: Nimzo-Indian: Rubinstein: Main Line: 7...dxc4 8 Bxc4} (11... Nbd7 12. Nxd7 Qxd7 13. Bxf6 gxf6 14. d5 Bxc3 15. bxc3 Bxd5 16. Qg4+ Kh8 17. Qh4 Bxc4 18. Qxf6+ Kg8 19. Qg5+ Kh8 20. Qf6+ Kg8 21. Qg5+ Kh8 22. Qf6+ Kg8 {½-½ (22) Zhigalko,S (2638)-Adams,M (2727) Heraklio 2017}) 12. Bh4 Nbd7 13. Qe2 (13. Nxf7 {seems wilder.} Kxf7 14. Bxe6+ Kxe6 15. Qb3+ Kf5 16. Qc2+) 13... Nxe5 14. dxe5 {Hoping for Rad1.} Qd4 $1 {[%csl LRc3,LRh4][%mdl 64] [#] Double Attack} 15. exf6 $146 {aiming for Bg3.} ({Predecessor:} 15. Bg3 Rfc8 16. Bxe6 fxe6 17. exf6 Qxf6 18. f3 Bxc3 19. bxc3 {0-1 (41) Lund,S (2421)-Grant,J (2235) Helsingor 2013}) 15... Qxh4 16. fxg7 Kxg7 17. Rad1 Rad8 18. Bd3 Rd4 (18... Bxc3 $5 19. bxc3 Qf6 $15) 19. Be4 Bxc3 ({Reject} 19... Rxe4 $6 20. Nxe4 Qxe4 21. Qxe4 $16) 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.19"]
[Round "7.9"]
[White "Ivanov, Sergey"]
[Black "Lenaerts, Lennert"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2496"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,61,38,17,16,26,30,23,35,0,0,0,0,0,0,0,0,0,0,0,0,0,56,43,47,55,129,46,60,50,87,80,119,119,120,124,120,119,505,506,908,908,878,875,1044,912]} 1. Nf3 d5 2. e3 Nf6 3. c4 c6 4. Nc3 g6 5. d4 Bg7 6. Be2 O-O 7. O-O Bg4 8. cxd5 cxd5 9. Qb3 b6 10. h3 Bc8 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} 11. Ne5 Bb7 12. Bd2 Nc6 {White has an edge.} 13. Rfc1 $146 ({Predecessor:} 13. Nxc6 Bxc6 14. Ba6 Qd7 15. Rac1 Bb7 16. Bb5 Qf5 17. Ne2 Rfc8 18. Bb4 {½-½ (90) Nakamura,H (2787)-Harikrishna,P (2763) chess.com INT 2016}) 13... Nxe5 14. dxe5 Nd7 15. f4 Nc5 16. Qd1 $1 d4 17. Nb5 $1 d3 18. Bf3 Bxf3 19. Qxf3 f6 (19... a5 $11) 20. b4 $36 {[%mdl 2048] Black is under pressure.} Ne6 21. Qc6 Kf7 {[#]} 22. Qe4 (22. e4 $1 $16 {And now f5 would win.} a6 23. f5 gxf5 24. exf5 axb5 25. Qxe6+ Ke8 26. Be3 fxe5 27. Qc6+ Kf7 28. Qxb5) 22... Qd7 $1 {[%cal Rd7b5]} 23. Rc6 $1 Rac8 24. Rac1 Rxc6 25. Rxc6 {Hoping for Qc4.} Rc8 26. Rxc8 Qxc8 27. exf6 Qc2 $2 {[%mdl 8192] [#]} (27... Bxf6 $16 {is a better chance.} 28. Qxd3 a6) 28. Nd4 $1 $18 {White is clearly winning.} Qd1+ {[#]} (28... Qxa2 $142 29. Nxe6 (29. fxg7 Nxd4 30. Qxd3 Nf5 $11) (29. Qxd3 Bxf6 30. Nb3 Qa4 $14) 29... Qxe6 30. Qxe6+ Kxe6) 29. Kh2 $1 Bxf6 30. Qxe6+ Kg7 31. Nf3 {Accuracy: White = 73%, Black = 57%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.19"]
[Round "7.10"]
[White "Mostert, Joost"]
[Black "Bueno, Mark"]
[Result "0-1"]
[ECO "E52"]
[WhiteElo "1959"]
[BlackElo "1976"]
[Annotator "NA"]
[PlyCount "114"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} O-O {[%emt 0:00:57]} 5. Bd3 {[%emt 0:00:09]} d5 {[%emt 0:00:07]} 6. Nf3 {[%emt 0:00:16]} b6 {[%emt 0:01:15]} 7. O-O {[%emt 0:00:14]} Ba6 {[%emt 0:02:00]} 8. cxd5 {[%emt 0:05:33]} Bxd3 {[%emt 0:00:08]} 9. Qxd3 {[%emt 0:00:05]} exd5 {[%emt 0:00:10]} 10. a3 {[%emt 0:00:36]} Bxc3 {[%emt 0:02:04]} 11. bxc3 {[%emt 0:00:31]} Nbd7 {[%emt 0:01:34]} 12. c4 {[%emt 0:01:03]} c6 {[%emt 0:03:39]} 13. Bb2 {[%emt 0:04:03]} Rc8 {[%emt 0:07:42]} 14. Rad1 {[%emt 0:05:35]} Re8 {[%emt 0:01:49]} 15. h3 {[%emt 0:00:33]} Ne4 {[%emt 0:03:37]} 16. Ne5 {[%emt 0:03:03]} f6 {[%emt 0:01:01]} 17. Nxd7 {[%emt 0:01:23]} Qxd7 {[%emt 0:00:03]} 18. a4 {[%emt 0:12:36]} Nd6 {[%emt 0:06:09]} 19. c5 {[%emt 0:00:28]} bxc5 {[%emt 0:00:59]} 20. dxc5 {[%emt 0:00:19]} Ne4 {[%emt 0:01:55]} 21. Bd4 {[%emt 0:00:51]} Qe7 {[%emt 0:01:17]} 22. Qc2 {[%emt 0:00:30]} Rb8 {[%emt 0:05:55]} 23. Rb1 {[%emt 0:00:13]} Qc7 {[%emt 0:09:55]} 24. f3 {[%emt 0:21:44]} Ng5 {[%emt 0:02:10]} 25. Qf5 {[%emt 0:09:10]} Qf7 {[%emt 0:14:34]} 26. a5 {[%emt 0:00:51]} Qg6 {[%emt 0:01:23]} 27. Qxg6 {[%emt 0:00:44]} hxg6 {[%emt 0:00:09]} 28. a6 {[%emt 0:00:07]} Ne6 {[%emt 0:00:42]} 29. Kf2 {[%emt 0:02:26]} Nc7 {[%emt 0:00:37]} 30. Rb7 {[%emt 0:01:04]} Rxb7 {[%emt 0:00:16]} 31. axb7 {[%emt 0:00:05]} Rb8 {[%emt 0:00:06]} 32. Rb1 {[%emt 0:00:10]} Ne6 {[%emt 0:06:35]} 33. g4 {[%emt 0:05:37]} Nd8 {[%emt 0:00:35]} 34. g5 {[%emt 0:01:06]} Kf7 {[%emt 0:00:29]} 35. gxf6 {[%emt 0:01:38]} gxf6 {[%emt 0:00:13]} 36. e4 {[%emt 0:00:59]} dxe4 {[%emt 0:00:38]} 37. fxe4 {[%emt 0:00:06]} Rxb7 {[%emt 0:00:07]} 38. Rf1 {[%emt 0:02:59]} Ne6 {[%emt 0:01:04]} 39. Be3 {[%emt 0:02:12]} a5 {[%emt 0:01:35]} 40. Rd1 {[%emt 0:05:37]} a4 {[%emt 0:02:18]} 41. Ra1 {[%emt 0:32:47]} Ra7 {[%emt 0:30:28]} 42. Ra3 {[%emt 0:00:29]} Nc7 {[%emt 0:00:42]} 43. Bf4 {[%emt 0:01:02]} Nb5 {[%emt 0:00:11]} 44. Ra1 {[%emt 0:00:43]} a3 {[%emt 0:00:31]} 45. Be3 {[%emt 0:01:45]} a2 {[%emt 0:01:53]} 46. Ke2 {[%emt 0:01:14]} Ra3 {[%emt 0:01:24]} 47. h4 {[%emt 0:00:34]} Nc3+ {[%emt 0:00:34]} 48. Kf3 {[%emt 0:05:06]} Nd1 {[%emt 0:01:48]} 49. Rxd1 {[%emt 0:00:05]} a1=Q {[%emt 0:00:13]} 50. Rxa1 {[%emt 0:00:03]} Rxa1 {[%emt 0:00:06]} 51. Bd4 {[%emt 0:00:28]} Ra4 {[%emt 0:00:26]} 52. Be3 {[%emt 0:00:14]} Ke6 {[%emt 0:00:17]} 53. Bf4 {[%emt 0:00:17]} Rd4 {[%emt 0:04:13]} 54. Ke3 {[%emt 0:00:37]} Rc4 {[%emt 0:00:40]} 55. Bd6 {[%emt 0:01:18]} f5 {[%emt 0:00:12]} 56. exf5+ {[%emt 0:00:29]} Kxf5 {[%emt 0:00:02]} 57. Be7 {[%emt 0:00:21]} Re4+ {[%emt 0:00:07]} 0-1

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.20"]
[Round "8.6"]
[White "Chanda, Sandipan"]
[Black "Ikonnikov, Vyacheslav"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2516"]
[BlackElo "2499"]
[Annotator "ChessBase"]
[PlyCount "51"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:04]} 3. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:22]} 4. e3 {[%emt 0:00:16]} O-O {[%emt 0:01:05]} 5. Bd2 {[%emt 0:00:16]} d5 {[%emt 0:12:21]} 6. Nf3 {[%emt 0:00:10]} a6 {[%emt 0:03:26]} 7. a3 {[%emt 0:00:14]} Be7 {[%emt 0:00:07]} 8. c5 {[%emt 0:00:07]} Nbd7 {[%emt 0:08:16]} 9. Bd3 {[%emt 0:00:26]} c6 {[%emt 0:00:06]} 10. b4 {[%emt 0:03:29]} Qc7 {[%emt 0:01:46]} 11. e4 {[%emt 0:03:52]} dxe4 {[%emt 0:04:16]} 12. Nxe4 {[%emt 0:00:33]} e5 {[%emt 0:02:18]} 13. Nxf6+ {[%emt 0:33:25]} Bxf6 {[%emt 0:00:32]} 14. O-O {[%emt 0:04:33]} exd4 {[%emt 0:02:20]} 15. Re1 {[%emt 0:00:34]} g6 {[%emt 0:15:55]} 16. Bh6 {[%emt 0:13:48]} Bg7 {[%emt 0:09:47]} 17. Qd2 {[%emt 0:00:20]} Nf6 {[%emt 0:02:11]} 18. Bf4 {[%emt 0:00:28]} Qd8 {[%emt 0:00:10]} 19. Bd6 {[%emt 0:00:47]} Re8 {[%emt 0:00:05]} 20. Bc4 {[%emt 0:08:22]} Ne4 {[%emt 0:15:18]} 21. Qa2 {[%emt 0:01:27]} Nxd6 {[%emt 0:01:27]} 22. cxd6 {[%emt 0:00:20]} Rf8 {[%emt 0:00:51]} 23. Re7 {[%emt 0:05:13]} Qxd6 {[%emt 0:03:49]} 24. Rae1 {[%emt 0:00:45]} Bf6 {[%emt 0:04:27]} 25. Rxf7 {[%emt 0:00:37]} Kh8 {[%emt 0:00:04]} 26. Rxf8+ {[%emt 0:00:27]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.20"]
[Round "8.7"]
[White "Van Vliet, Jeffrey"]
[Black "Ivanov, Sergey"]
[Result "1/2-1/2"]
[ECO "C17"]
[WhiteElo "2380"]
[BlackElo "2496"]
[Annotator "ChessBase"]
[PlyCount "113"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:05:25]} e6 {[%emt 0:00:00]} 2. d4 {[%emt 0:01:24]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:03]} Bb4 {[%emt 0:00:04]} 4. e5 {[%emt 0:00:29]} c5 {[%emt 0:00:16]} 5. Bd2 {[%emt 0:01:58]} Ne7 {[%emt 0:00:45]} 6. Nb5 {[%emt 0:00:13]} Bxd2+ {[%emt 0:00:21]} 7. Qxd2 {[%emt 0:00:05]} O-O {[%emt 0:00:13]} 8. Nf3 {[%emt 0:03:39]} Nbc6 {[%emt 0:04:14]} 9. c3 {[%emt 0:04:23]} a6 {[%emt 0:01:41]} 10. Na3 {[%emt 0:06:16]} cxd4 {[%emt 0:01:09]} 11. cxd4 {[%emt 0:00:06]} f6 {[%emt 0:00:28]} 12. exf6 {[%emt 0:01:55]} Rxf6 {[%emt 0:00:08]} 13. Bd3 {[%emt 0:04:06]} Qb6 {[%emt 0:05:25]} 14. O-O-O {[%emt 0:03:13]} Bd7 {[%emt 0:04:01]} 15. Nc2 {[%emt 0:01:30]} Be8 {[%emt 0:08:30]} 16. Rde1 {[%emt 0:08:28]} Bg6 {[%emt 0:05:10]} 17. Kb1 {[%emt 0:09:35]} Bxd3 {[%emt 0:23:11]} 18. Qxd3 {[%emt 0:00:06]} Ng6 {[%emt 0:00:36]} 19. Ng5 {[%emt 0:11:11]} Rxf2 {[%emt 0:12:44]} 20. Rxe6 {[%emt 0:14:01]} Nf8 {[%emt 0:01:02]} 21. Re2 {[%emt 0:05:12]} Rxe2 {[%emt 0:02:16]} 22. Qxe2 {[%emt 0:00:05]} Nxd4 {[%emt 0:06:43]} 23. Qe5 {[%emt 0:03:32]} Nde6 {[%emt 0:03:44]} 24. Qxd5 {[%emt 0:00:12]} Rd8 {[%emt 0:00:50]} 25. Qf5 {[%emt 0:00:05]} Nxg5 {[%emt 0:03:41]} 26. Qxg5 {[%emt 0:00:04]} Ne6 {[%emt 0:00:19]} 27. Qe5 {[%emt 0:02:30]} Qd6 {[%emt 0:03:15]} 28. Qxd6 {[%emt 0:00:16]} Rxd6 {[%emt 0:00:02]} 29. Re1 {[%emt 0:00:24]} Kf7 {[%emt 0:00:44]} 30. Ne3 {[%emt 0:00:49]} Rd2 {[%emt 0:03:09]} 31. Kc1 {[%emt 0:00:29]} Rf2 {[%emt 0:00:35]} 32. Rf1 {[%emt 0:00:05]} Rxf1+ {[%emt 0:00:06]} 33. Nxf1 {[%emt 0:00:03]} Kf6 {[%emt 0:00:18]} 34. Kd2 {[%emt 0:00:17]} Ke5 {[%emt 0:00:10]} 35. Ne3 {[%emt 0:02:33]} h5 {[%emt 0:01:22]} 36. Nc4+ {[%emt 0:05:36]} Kd4 {[%emt 0:00:34]} 37. Nd6 {[%emt 0:00:18]} b5 {[%emt 0:00:33]} 38. Nf5+ {[%emt 0:01:08]} Ke5 {[%emt 0:00:34]} 39. Ne7 {[%emt 0:03:09]} Ke4 {[%emt 0:01:08]} 40. Nc6 {[%emt 0:01:34]} Nf4 {[%emt 0:01:56]} 41. g3 {[%emt 0:32:07]} Ne6 {[%emt 0:34:31]} 42. Nb4 {[%emt 0:00:00]} a5 {[%emt 0:00:00]} 43. Nc6 {[%emt 0:00:00]} Kf3 {[%emt 0:00:00]} 44. Nxa5 {[%emt 0:00:00]} Kg2 {[%emt 0:00:00]} 45. Ke3 {[%emt 0:00:00]} Kxh2 {[%emt 0:00:00]} 46. Kf2 {[%emt 0:00:00]} Ng5 {[%emt 0:00:00]} 47. b3 {[%emt 0:00:00]} Ne4+ {[%emt 0:00:00]} 48. Kf3 {[%emt 0:00:00]} Nxg3 {[%emt 0:00:00]} 49. a4 {[%emt 0:00:00]} bxa4 {[%emt 0:00:00]} 50. bxa4 {[%emt 0:00:00]} g5 {[%emt 0:00:00]} 51. Nc4 {[%emt 0:00:00]} g4+ {[%emt 0:00:00]} 52. Kf4 {[%emt 0:00:00]} Ne2+ {[%emt 0:00:00]} 53. Kg5 {[%emt 0:00:00]} g3 {[%emt 0:00:00]} 54. Ne3 {[%emt 0:00:00]} Kg1 {[%emt 0:01:52]} 55. Nf5 {[%emt 0:00:00]} Kf2 {[%emt 0:03:30]} 56. Nxg3 {[%emt 0:00:00]} Kxg3 {[%emt 0:00:41]} 57. Kxh5 {[%emt 0:00:00]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.20"]
[Round "8.8"]
[White "Lai, Hing Ting"]
[Black "Suvrajit, Saha"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2460"]
[BlackElo "2189"]
[Annotator "ChessBase"]
[PlyCount "199"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:45]} Nf6 {[%emt 0:00:40]} 3. Nf3 {[%emt 0:00:25]} b6 {[%emt 0:01:36]} 4. Bg2 {[%emt 0:00:28]} Bb7 {[%emt 0:00:02]} 5. O-O {[%emt 0:01:01]} c5 {[%emt 0:01:39]} 6. d4 {[%emt 0:00:25]} cxd4 {[%emt 0:00:18]} 7. Qxd4 {[%emt 0:00:08]} Nc6 {[%emt 0:03:35]} 8. Qf4 {[%emt 0:04:23]} Rc8 {[%emt 0:09:52]} 9. b3 {[%emt 0:03:58]} d5 {[%emt 0:03:51]} 10. Rd1 {[%emt 0:03:52]} Bd6 {[%emt 0:12:34]} 11. Qh4 {[%emt 0:01:03]} Ne7 {[%emt 0:04:28]} 12. Bb2 {[%emt 0:03:03]} Ng6 {[%emt 0:03:59]} 13. Qh3 {[%emt 0:03:15]} dxc4 {[%emt 0:04:48]} 14. Nc3 {[%emt 0:02:40]} Qe7 {[%emt 0:04:51]} 15. Nb5 {[%emt 0:08:05]} Bc5 {[%emt 0:00:48]} 16. bxc4 {[%emt 0:03:38]} a6 {[%emt 0:03:21]} 17. Nc3 {[%emt 0:02:22]} O-O {[%emt 0:01:20]} 18. Na4 {[%emt 0:02:48]} Ne4 {[%emt 0:04:56]} 19. Nxc5 {[%emt 0:05:24]} Qxc5 {[%emt 0:00:39]} 20. e3 {[%emt 0:05:48]} Rfd8 {[%emt 0:07:13]} 21. Bd4 {[%emt 0:14:32]} Qa5 {[%emt 0:05:54]} 22. Rdb1 {[%emt 0:08:45]} b5 {[%emt 0:02:43]} 23. Qh5 {[%emt 0:08:47]} Rxc4 {[%emt 0:03:21]} 24. Ne5 {[%emt 0:01:48]} Rc7 {[%emt 0:16:26]} 25. Nxg6 {[%emt 0:05:21]} hxg6 {[%emt 0:01:19]} 26. Qh4 {[%emt 0:01:44]} g5 {[%emt 0:00:15]} 27. Qg4 {[%emt 0:00:22]} f5 {[%emt 0:00:20]} 28. Qh5 {[%emt 0:00:13]} Nd2 {[%emt 0:02:11]} 29. Qg6 {[%emt 0:04:24]} Bxg2 {[%emt 0:00:30]} 30. Qxe6+ {[%emt 0:02:04]} Rf7 {[%emt 0:00:01]} 31. Kxg2 {[%emt 0:00:37]} Qc7 {[%emt 0:00:37]} 32. Rc1 {[%emt 0:00:48]} Nc4 {[%emt 0:00:49]} 33. Qxa6 {[%emt 0:00:54]} Qd7 {[%emt 0:00:17]} 34. Rd1 {[%emt 0:01:44]} Qd5+ {[%emt 0:00:04]} 35. Kg1 {[%emt 0:00:05]} Ra8 {[%emt 0:01:27]} 36. Qg6 {[%emt 0:00:00]} Qf3 {[%emt 0:00:31]} 37. Qxg5 {[%emt 0:00:07]} Rxa2 {[%emt 0:00:04]} 38. Rxa2 {[%emt 0:00:44]} Qxd1+ {[%emt 0:00:02]} 39. Kg2 {[%emt 0:00:01]} Ne5 {[%emt 0:01:21]} 40. Ra8+ {[%emt 0:01:51]} Kh7 {[%emt 0:00:04]} 41. Qf4 {[%emt 0:11:22]} Ng6 {[%emt 0:02:48]} 42. Qg5 {[%emt 0:03:29]} Ne5 {[%emt 0:02:31]} 43. Qf4 {[%emt 0:00:21]} Ng6 {[%emt 0:00:03]} 44. Qf3 {[%emt 0:00:05]} Qxf3+ {[%emt 0:00:53]} 45. Kxf3 {[%emt 0:00:02]} Rb7 {[%emt 0:00:20]} 46. Ke2 {[%emt 0:00:19]} Ne7 {[%emt 0:01:27]} 47. Kd3 {[%emt 0:01:21]} Kg6 {[%emt 0:01:03]} 48. Kc3 {[%emt 0:01:03]} Nd5+ {[%emt 0:00:49]} 49. Kb3 {[%emt 0:00:09]} Kf7 {[%emt 0:00:37]} 50. Rd8 {[%emt 0:00:42]} Ne7 {[%emt 0:01:36]} 51. Bc5 {[%emt 0:00:55]} Nc6 {[%emt 0:01:32]} 52. Rd5 {[%emt 0:00:18]} g6 {[%emt 0:00:29]} 53. Rd6 {[%emt 0:00:47]} Na5+ {[%emt 0:04:05]} 54. Kb4 {[%emt 0:00:34]} Nc4 {[%emt 0:00:09]} 55. Ra6 {[%emt 0:04:00]} Ne5 {[%emt 0:02:14]} 56. Bd4 {[%emt 0:00:18]} Nd3+ {[%emt 0:01:57]} 57. Kb3 {[%emt 0:00:05]} Nxf2 {[%emt 0:00:46]} 58. Rf6+ {[%emt 0:00:02]} Ke8 {[%emt 0:00:50]} 59. Rxg6 {[%emt 0:00:01]} Rh7 {[%emt 0:02:35]} 60. h4 {[%emt 0:00:33]} Ne4 {[%emt 0:00:32]} 61. Be5 {[%emt 0:01:08]} Re7 {[%emt 0:01:05]} 62. Bf4 {[%emt 0:01:02]} Kf7 {[%emt 0:00:36]} 63. Rc6 {[%emt 0:01:02]} Nd2+ {[%emt 0:05:21]} 64. Kc3 {[%emt 0:00:47]} Nc4 {[%emt 0:01:11]} 65. Rc5 {[%emt 0:00:46]} Kg6 {[%emt 0:01:45]} 66. Kd3 {[%emt 0:03:02]} Rd7+ {[%emt 0:00:23]} 67. Ke2 {[%emt 0:00:23]} Rd2+ {[%emt 0:00:47]} 68. Kf3 {[%emt 0:00:52]} Rb2 {[%emt 0:00:54]} 69. Be5 {[%emt 0:02:52]} Nxe5+ {[%emt 0:02:45]} 70. Rxe5 {[%emt 0:00:02]} b4 {[%emt 0:00:06]} 71. e4 {[%emt 0:01:40]} fxe4+ {[%emt 0:00:50]} 72. Rxe4 {[%emt 0:00:01]} b3 {[%emt 0:00:06]} 73. Rb4 {[%emt 0:00:17]} Rb1 {[%emt 0:00:06]} 74. Rb7 {[%emt 0:03:38]} b2 {[%emt 0:01:02]} 75. Kg4 {[%emt 0:01:15]} Kf6 {[%emt 0:01:26]} 76. h5 {[%emt 0:00:01]} Ke6 {[%emt 0:01:48]} 77. h6 {[%emt 0:01:29]} Kf6 {[%emt 0:00:29]} 78. h7 {[%emt 0:02:59]} Rh1 {[%emt 0:00:13]} 79. Rxb2 {[%emt 0:00:11]} Rxh7 {[%emt 0:00:11]} 80. Rb6+ {[%emt 0:00:04]} Ke5 {[%emt 0:00:19]} 81. Kg5 {[%emt 0:00:26]} Rg7+ {[%emt 0:02:11]} 82. Rg6 {[%emt 0:00:01]} Ra7 {[%emt 0:00:42]} 83. g4 {[%emt 0:00:37]} Ra5 {[%emt 0:00:22]} 84. Rf6 {[%emt 0:00:26]} Ra8 {[%emt 0:00:23]} 85. Rg6 {[%emt 0:01:11]} Rh8 {[%emt 0:00:19]} 86. Rg7 {[%emt 0:00:19]} Ke6 {[%emt 0:00:24]} 87. Kg6 {[%emt 0:00:01]} Rf8 {[%emt 0:00:46]} 88. g5 {[%emt 0:00:08]} Rh8 {[%emt 0:00:18]} 89. Ra7 {[%emt 0:00:50]} Rg8+ {[%emt 0:00:04]} 90. Kh6 {[%emt 0:00:16]} Kf5 {[%emt 0:00:58]} 91. Rf7+ {[%emt 0:00:26]} Ke6 {[%emt 0:00:24]} 92. g6 {[%emt 0:00:46]} Rh8+ {[%emt 0:00:28]} 93. Rh7 {[%emt 0:00:09]} Ra8 {[%emt 0:00:40]} 94. Rf7 {[%emt 0:00:49]} Rh8+ {[%emt 0:00:13]} 95. Kg7 {[%emt 0:00:15]} Ra8 {[%emt 0:01:00]} 96. Rf8 {[%emt 0:00:23]} Ra7+ {[%emt 0:00:11]} 97. Kg8 {[%emt 0:00:43]} Rb7 {[%emt 0:00:35]} 98. g7 {[%emt 0:01:04]} Rb2 {[%emt 0:00:16]} 99. Rf1 {[%emt 0:00:40]} Rb8+ {[%emt 0:00:11]} 100. Kh7 {[%emt 0:00:09]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.20"]
[Round "8.9"]
[White "Beerdsen, Thomas"]
[Black "Mijnster, Niels"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2497"]
[BlackElo "2089"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,37,-47,-25,-37,-25,-31,-32,-27,40,23,41,38,31,43,74,42,138,61,116,122,131,126,133,129,312,305,308,258,1641,1637]} 1. e4 c6 2. Nc3 d5 3. Qe2 (3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. g3 Nf6 7. a3 Bc5 8. d3 O-O 9. Bg2 Nbd7 10. O-O b5 11. Qd1 Qb6 12. Qe2 a5 13. Kh1 d4 14. Nb1 e5 {0-1 (47) Vallejo Pons,F (2693)-Anand,V (2774) Karlsruhe/Baden Baden 2019}) 3... d4 4. Nd1 e5 5. d3 c5 6. g3 {B11: Caro-Kann: Two Knights Variation} Nc6 7. f4 exf4 $146 ({Predecessor:} 7... Bd6 8. Nf3 Nge7 9. f5 g6 10. g4 h5 {½-½ (33) Beerdsen,T (2476)-Illingworth,M (2493) chess.com INT 2019}) 8. gxf4 {Black is slightly better.} Qh4+ ({Black should play} 8... Qb6 $11) 9. Nf2 $1 $14 Bd6 10. Nf3 Qe7 11. Rg1 f6 12. Bd2 (12. e5 $5 fxe5 13. Ne4 $14) 12... a5 {[#]} (12... Bc7 $14) 13. a3 (13. e5 $1 $16 {[%mdl 512]} fxe5 14. Ne4) 13... a4 {[#]} (13... Bc7 $14) 14. e5 $1 $16 {[%mdl 512]} fxe5 15. Ne4 Bc7 16. fxe5 Nxe5 $2 (16... h6 $16) 17. Nxe5 $18 Bxe5 18. Rg5 {Black must now prevent Rxe5!} Nf6 $2 {[#]} (18... Kd8) 19. Rxe5 $1 {[%mdl 512] Accuracy: White = 81%, Black = 12%.} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.20"]
[Round "8.10"]
[White "Bueno, Mark"]
[Black "Minnema, Rens"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "1976"]
[BlackElo "1846"]
[Annotator "NA"]
[PlyCount "83"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:01]} 3. Nc3 {[%emt 0:00:00]} g6 {[%emt 0:00:11]} 4. f4 {[%emt 0:00:00]} Bg7 {[%emt 0:00:24]} 5. Nf3 {[%emt 0:00:00]} O-O {[%emt 0:00:20]} 6. Bd3 {[%emt 0:00:07]} c5 {[%emt 0:00:42]} 7. e5 {[%emt 0:00:55]} dxe5 {[%emt 0:07:48]} 8. dxe5 {[%emt 0:00:20]} Nd5 {[%emt 0:00:38]} 9. Nxd5 {[%emt 0:00:07]} Qxd5 {[%emt 0:00:09]} 10. Qe2 {[%emt 0:00:04]} Nc6 {[%emt 0:06:05]} 11. Be4 {[%emt 0:00:58]} Qd7 {[%emt 0:07:04]} 12. Be3 {[%emt 0:01:04]} b6 {[%emt 0:08:45]} 13. Rd1 {[%emt 0:00:11]} Qc7 {[%emt 0:00:54]} 14. O-O {[%emt 0:00:20]} Bg4 {[%emt 0:04:12]} 15. h3 {[%emt 0:00:55]} Bxf3 {[%emt 0:00:56]} 16. Qxf3 {[%emt 0:00:09]} Rac8 {[%emt 0:00:38]} 17. Bxc6 {[%emt 0:00:59]} Qxc6 {[%emt 0:00:02]} 18. Qxc6 {[%emt 0:00:08]} Rxc6 {[%emt 0:00:05]} 19. Rd7 {[%emt 0:00:03]} f6 {[%emt 0:10:46]} 20. Rxe7 {[%emt 0:01:56]} fxe5 {[%emt 0:00:39]} 21. fxe5 {[%emt 0:00:10]} Rxf1+ {[%emt 0:01:13]} 22. Kxf1 {[%emt 0:00:11]} a6 {[%emt 0:02:18]} 23. Bf4 {[%emt 0:01:09]} Kf8 {[%emt 0:01:27]} 24. Ra7 {[%emt 0:00:33]} b5 {[%emt 0:04:53]} 25. Rd7 {[%emt 0:00:47]} c4 {[%emt 0:05:11]} 26. Ke2 {[%emt 0:00:48]} Rc5 {[%emt 0:02:10]} 27. e6 {[%emt 0:06:38]} Rc6 {[%emt 0:15:39]} 28. Rd6 {[%emt 0:01:19]} Rxd6 {[%emt 0:00:46]} 29. Bxd6+ {[%emt 0:00:03]} Ke8 {[%emt 0:00:13]} 30. b3 {[%emt 0:01:58]} cxb3 {[%emt 0:00:58]} 31. cxb3 {[%emt 0:00:02]} Bd4 {[%emt 0:08:19]} 32. Kd3 {[%emt 0:00:16]} Bb6 {[%emt 0:00:35]} 33. Ke4 {[%emt 0:00:36]} Bd8 {[%emt 0:01:53]} 34. Kd5 {[%emt 0:00:14]} h5 {[%emt 0:01:54]} 35. Kc6 {[%emt 0:00:34]} h4 {[%emt 0:01:05]} 36. Kb7 {[%emt 0:01:30]} a5 {[%emt 0:01:42]} 37. e7 {[%emt 0:01:43]} Bxe7 {[%emt 0:00:18]} 38. Bxe7 {[%emt 0:00:04]} Kxe7 {[%emt 0:00:06]} 39. Kb6 {[%emt 0:00:11]} a4 {[%emt 0:01:13]} 40. Kxb5 {[%emt 0:00:12]} axb3 {[%emt 0:00:09]} 41. axb3 {[%emt 0:30:01]} Kd7 {[%emt 0:33:00]} 42. Kc5 {[%emt 0:00:46]} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.21"]
[Round "9.6"]
[White "Beerdsen, Thomas"]
[Black "Chanda, Sandipan"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2497"]
[BlackElo "2516"]
[Annotator "ChessBase"]
[PlyCount "49"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:00]} a6 {[%emt 0:00:10]} 6. h3 {[%emt 0:00:00]} e6 {[%emt 0:00:08]} 7. g4 {[%emt 0:00:03]} Nfd7 {[%emt 0:00:10]} 8. g5 {[%emt 0:00:06]} b5 {[%emt 0:00:08]} 9. a3 {[%emt 0:00:09]} Bb7 {[%emt 0:00:07]} 10. h4 {[%emt 0:02:04]} Be7 {[%emt 0:00:47]} 11. Be3 {[%emt 0:00:09]} Nc6 {[%emt 0:00:07]} 12. Qe2 {[%emt 0:00:07]} Nxd4 {[%emt 0:05:34]} 13. Bxd4 {[%emt 0:00:06]} e5 {[%emt 0:00:08]} 14. Be3 {[%emt 0:00:06]} Rc8 {[%emt 0:00:06]} 15. Bh3 {[%emt 0:08:28]} Rc4 {[%emt 0:12:35]} 16. a4 {[%emt 0:07:50]} O-O {[%emt 0:02:27]} 17. axb5 {[%emt 0:05:20]} axb5 {[%emt 0:01:24]} 18. Ra7 {[%emt 0:14:33]} Bc6 {[%emt 0:01:01]} 19. Bxd7 {[%emt 0:21:32]} Bxd7 {[%emt 0:00:13]} 20. Nd5 {[%emt 0:00:21]} Ra4 {[%emt 0:07:24]} 21. Rxa4 {[%emt 0:02:30]} bxa4 {[%emt 0:04:14]} 22. Qa6 {[%emt 0:01:11]} Qe8 {[%emt 0:09:25]} 23. O-O {[%emt 0:05:39]} f5 {[%emt 0:02:31]} 24. exf5 {[%emt 0:07:40]} Bxf5 {[%emt 0:02:02]} 25. Nxe7+ {[%emt 0:04:14]} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.21"]
[Round "9.7"]
[White "Ikonnikov, Vyacheslav"]
[Black "Roorda, Thijs"]
[Result "1/2-1/2"]
[ECO "A96"]
[WhiteElo "2499"]
[BlackElo "2108"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,109,35,56,58,54,51,62,62,97,93,85,104,104,105,101,97,89,78,86,41,62,66,72,13,17,-37,0,-2,0,-21,-20,-75,-49,-50,-45,-174,-172,-176,-159,-255,-265,-253,-216,-194,-171,-163,-124,-137,-131,-167,-161,-412,-404,-397,-397,-388,-382,-382,-381,-348,-337,-337,-317,-214,-83,-92,-87,-79,-72,-205,-205,-193,-176,-150,-84,-205,-203,-218,-218,-218,-218,-206,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Ne4 8. Nxe4 {A96: Classical Dutch: Fluid Systems: Early deviations} (8. Qc2 Nxc3 9. bxc3 Nc6 10. d5 Na5 11. dxe6 Bxe6 12. Nd4 Bxc4 13. Nxf5 Bf6 14. Ne3 Bf7 15. Be4 h6 16. Rb1 Kh8 17. c4 {½-½ (25) Ding,L (2777)-Kravtsiv,M (2665) Tbilisi 2017}) 8... fxe4 9. Nd2 d5 10. f3 {White is slightly better.} dxc4 11. Nxe4 Nd7 $146 ({Predecessor:} 11... b5 12. f4 c6 13. a4 b4 14. Be3 Nd7 15. a5 Qc7 {1-0 (25) Hoenick,A (2097)-Dijon,F (1965) Calvia 2015}) 12. Be3 b5 13. a4 b4 14. Bf2 a5 15. Qc2 Nb6 16. f4 Rb8 17. Nc5 Qe8 18. b3 (18. e4 $16) 18... c3 $11 19. Qd3 (19. e4 $11) 19... c6 (19... Bxc5 $5 20. dxc5 Nd5 $11) 20. Be4 g6 21. h4 Nd5 22. h5 (22. Qc4 $11 {remains equal.}) 22... gxh5 $17 23. Bxh7+ Kh8 24. Bg6 {[#]} ({White should try} 24. Be4 $1 $15) 24... Nxf4 $1 $19 {[%mdl 576] Double Attack} 25. Bxe8 (25. gxf4 Rg8) 25... Nxd3 26. Bxc6 (26. exd3 $17 Rxe8 27. Rae1) 26... Nxf2 ({Not} 26... Rxf2 27. Nxd3 Rxf1+ 28. Kxf1 $17) 27. Rxf2 Rxf2 28. Kxf2 Bxc5 29. dxc5 Bb7 30. Bxb7 Rxb7 $17 {[%mdl 4096] Endgame KR-KR} 31. Rh1 Kg7 $1 32. Ke3 $2 (32. Rxh5 c2 33. Rh1) 32... Rd7 $1 $19 {[%cal Rd7d5]} 33. Rh4 Kf6 34. Rc4 {With the idea c6.} Ke5 35. c6 Rc7 36. Rc5+ {[#]} Kd6 $1 {[%mdl 576] Double Attack} 37. Rxh5 Rxc6 {Threatens to win with ...c2.} 38. Rh1 c2 (38... Ke5 $19 39. Rf1 Rc7) 39. Kd2 $17 Rc3 40. g4 Ke7 41. g5 (41. Kc1 $17 {was worth a try.}) 41... Kf7 $1 $19 ({Less strong is} 41... Rxb3 42. Rh7+ Kf8 43. Kxc2 $15) 42. Kc1 Rxb3 43. Kxc2 {[#] Rf1+ would kill now.} Ra3 ({Better is} 43... Re3 $1 44. Kd2 Ra3 45. Rh7+ Kg6 {[%mdl 64] Double Attack}) 44. Rh7+ (44. Rh6 $17 {was necessary.}) 44... Kg6 {[%mdl 64] Double Attack} 45. Rh6+ Kxg5 46. Rxe6 Rxa4 47. Re3 {[#]} Ra2+ $2 (47... Ra1 $1 $19 {Strongly threatening ...a4.} 48. Kb2 Rf1) 48. Kb1 $11 {The position is equal.} Rd2 {And now ...Kf4 would win.} 49. Re5+ Kf4 (49... Kf6 {is more complex.} 50. Rxa5 Ke6 51. Rb5 Rxe2 52. Rxb4 Kd7) 50. Rxa5 Rxe2 51. Rb5 Re4 52. Kb2 Ke3 53. Kb3 Ke2 54. Rxb4 Rxb4+ 55. Kxb4 {Accuracy: White = 47%, Black = 67%.} 1/2-1/2

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.21"]
[Round "9.8"]
[White "Ivanov, Sergey"]
[Black "Van der Velden, Bram"]
[Result "1-0"]
[ECO "D26"]
[WhiteElo "2496"]
[BlackElo "2176"]
[Annotator "TA"]
[PlyCount "27"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,75,25,34,34,41,41,38,32,31,33,45,40,46,19,47,14,91,114,111,104,110,85,195,59,204,94,135,139,124,131,254,254,242,275,266,273,255,260,186,256,322,323,323,307,417,416,414,412,414,409,402,395,381,385,371,356,517,517,516,509,565,548,704,617]} 1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 Nf6 5. Nf3 a6 6. O-O b5 ({Predecessor:} 6... c5 7. Qe2 b5 8. Bd3 Bb7 9. a4 b4 10. Nbd2 Nbd7 11. Nc4 Be7 12. e4 cxd4 13. e5 {½-½ (31) Beaumont,C (2300)-Richardson,J (2308) Birmingham 2002}) 7. Bd3 Bb7 8. Qe2 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines} Nbd7 9. a4 b4 10. e4 {White is slightly better.} Be7 11. Nbd2 c5 12. e5 Nd5 13. Nc4 $146 {[%mdl 2048] White is pushing.} (13. Nb3 cxd4 14. Bd2 Nc5 15. Nxc5 Bxc5 16. Rac1 Be7 17. Qe4 Qd7 18. Qg4 Kf8 19. Qxd4 h6 20. h4 g6 21. Qg4 Kg7 22. Rc4 Rad8 {½-½ (22) Bauer,C (2646)-Hera,I (2619) Belgium 2018}) 13... cxd4 14. Nxd4 {Played: Bc1-g5} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.21"]
[Round "9.9"]
[White "Lai, Hing Ting"]
[Black "Van der Werf, Mark"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "2460"]
[BlackElo "2394"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,93,41,41,45,42,45,41,51,35,36,35,59,31,35,36,39,33,53,68,71,68,64,64,182,183,168,64,71,71,102,94,95,93,114,95,79,86,81,66,91,0,0,-12,0,-44,0,-78,0,0,97,72,74,76,166,159,615,602,1112,1110,3156,2050,1536,984,1189,689,530,656,644,641,589,566,1466,1141,29988,29989,29989,29990]} 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. a4 Bg7 9. h3 O-O 10. e3 Qe7 {A61: Modern Benoni: Nf3 without early e4} 11. Be2 Nbd7 12. O-O Ne8 {White is slightly better.} (12... Rb8 13. Re1 Ne8 14. e4 Ne5 15. Nxe5 Bxe5 16. Qd2 Nf6 17. Bf1 Re8 18. Rad1 Bd4 19. b4 Nh5 20. Bh2 b6 21. b5 {½-½ (21) Ponomariov,R (2663)-Donchenko,A (2607) Germany 2019}) 13. Nd2 Ne5 14. Re1 Nc7 15. Bg3 f5 16. f4 $146 ({Predecessor:} 16. a5 Rb8 17. Qb3 Bd7 18. Bf1 {1-0 (33) Avramidou,A (2259)-Spiranec,N (1957) Montevideo 2017}) 16... Nf7 17. Nc4 Bd7 18. Nb6 Rae8 19. Bd3 Na8 {[#]} 20. Bh4 $1 {[%mdl 512]} g5 (20... Qxh4 $14 21. Nxd7 Rxe3 22. Rxe3 Bd4 23. Nxf8 Bxe3+ 24. Kh1 Kxf8) 21. Nxd7 $18 Qxd7 22. Bg3 ({Don't take} 22. fxg5 $6 Ne5 $14) ({White should play} 22. Qh5 $1 $18) 22... gxf4 $14 23. exf4 Rxe1+ 24. Bxe1 Nc7 25. Kh2 Bxc3 26. bxc3 Nxd5 27. Qf3 Ne7 28. c4 {[%mdl 1024] White has strong compensation.} d5 29. Bf2 (29. cxd5 $16 Re8 30. Qg3+ Ng6 31. Bf2) 29... d4 $11 30. Rb1 Nd6 31. Re1 b6 32. h4 (32. Bh4 $11 Ng6 33. Qd5+ Rf7 34. Bg5) 32... Kh8 ({Black should try} 32... Rf7 $1 $17 33. Rb1 Ndc8) 33. h5 Ng8 (33... Ndc8 $11 {keeps the balance.}) 34. a5 $1 $16 Nf6 35. axb6 Nfe4 {[#]} (35... Nde4 $16 36. Bh4 Rb8) 36. Bh4 $1 $18 Qb7 $2 {[#]} (36... Qf7 $16) 37. g4 $1 fxg4 38. Qxg4 Nf6 {[#]} 39. Qe6 $1 {[%mdl 576] Double Attack} Nde8 {[#]} 40. Qf5 {Played: Qe6-e7} 1-0

[Event "13th Leiden Open 2019"]
[Site "Leiden"]
[Date "2019.07.21"]
[Round "9.10"]
[White "De Jong, Sebastiaan"]
[Black "Bueno, Mark"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "1942"]
[BlackElo "1976"]
[Annotator "NA"]
[PlyCount "32"]
[EventDate "2019.07.08"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:09]} g6 {[%emt 0:00:00]} 4. Bg2 {[%emt 0:00:15]} Bg7 {[%emt 0:00:00]} 5. d3 {[%emt 0:00:56]} d6 {[%emt 0:00:00]} 6. Nf3 {[%emt 0:02:35]} f5 {[%emt 0:00:29]} 7. e4 {[%emt 0:06:18]} Nf6 {[%emt 0:01:35]} 8. a3 {[%emt 0:06:19]} a5 {[%emt 0:02:05]} 9. Rb1 {[%emt 0:02:51]} O-O {[%emt 0:00:24]} 10. h3 {[%emt 0:00:49]} Qe8 {[%emt 0:31:39]} 11. O-O {[%emt 0:11:52]} h6 {[%emt 0:08:41]} 12. Re1 {[%emt 0:11:17]} f4 {[%emt 0:01:31]} 13. Kh2 {[%emt 0:05:30]} g5 {[%emt 0:00:51]} 14. Ng1 {[%emt 0:18:15]} Nd4 {[%emt 0:20:54]} 15. Nce2 {[%emt 0:03:32]} Qh5 {[%emt 0:03:09]} 16. f3 {[%emt 0:07:03]} Ne6 {[%emt 0:06:15]} 1/2-1/2

