[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1.1"]
[White "Van den Dikkenberg, Erik"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2116"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,58,-45,-35,-54,-9,-2,-9,-2,-14,-17,-22,-47,-15,-14,-13,-27,-23,-17,-11,-27,0,-87,-85,-88,-94,-307,-316,-316,-317,-328,-322,-337,-316,-383,-415,-393,-368,-408,-415,-419,-402,-476,-382,-7693,-7600,-5389,-5389]} 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 5. exd5 exd5 6. Bb5 Nf6 7. Qe2+ Be7 $1 8. Ne5 {B23: Closed Sicilian: Lines without g3} Qd6 (8... Bd7 {seems wilder.} 9. Bxc6 Bxc6 10. O-O O-O 11. d3 Re8) (8... Bd7 9. Bxc6 Bxc6 10. Nxc6 bxc6 11. O-O O-O 12. b3 Re8 13. Qf3 Bf8 14. d3 Rb8 15. Na4 Qe7 {½-½ (25) Vajic,G (2280)-Buljubasic,S (2291) Bosanska Krupa 2018}) 9. Bxc6+ bxc6 10. O-O {The position is equal.} O-O 11. d3 Nd7 $146 ({Predecessor:} 11... Re8 12. Qf2 Nd7 13. Bd2 Bf6 14. Rae1 Re7 15. Nf3 Nb6 {½-½ (41) Ostrowska,J (1541)-Rynkiewicz,N (1357) Szczyrk 2013}) 12. Bd2 Bf6 {[%cal Rd7e5]} 13. Rae1 Ba6 14. Nf3 c4 {With the idea ...cxd3.} 15. d4 Rab8 $36 {[%mdl 2048] Black has the initiative.} 16. Bc1 c5 17. dxc5 (17. Qf2 $11) 17... Nxc5 $17 18. Ne5 d4 19. Ne4 $2 (19. Rd1 $17) 19... Nxe4 $19 20. Qxe4 c3 {[%mdl 64] [#] Discovered Attack} 21. bxc3 Bxf1 ({Not} 21... dxc3 22. Rd1 $15) 22. Kxf1 dxc3 23. Be3 Bxe5 24. fxe5 Qa6+ 25. Kg1 Qxa2 26. Bd4 Rfc8 27. Re3 Rb2 28. Rxc3 $2 (28. h3) 28... Qb1+ {[%mdl 64] [#] Double Attack} 29. Kf2 Rxc3 {Accuracy: White = 22%, Black = 68%.} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1.2"]
[White "Nikolic, Predrag"]
[Black "Otten, Martijn"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2573"]
[BlackElo "2081"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,55,12,20,43,33,52,34,35,36,39,25,29,15,27,0,0,0,14,14,118,108,100,122,123,135,173,165,170,178,898,891,883,883]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Nb1 Ba6 8. Be2 c5 9. O-O e6 10. Nbd2 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} c3 11. bxc3 bxc3 12. Nb1 Qa5 13. Ba3 {[#] LiveBook: 7 Games} Bxe2 $146 ({Predecessor:} 13... Be7 14. Bb5+ Nbd7 15. Qd3 Bxb5 16. axb5 {½-½ (23) Mastrovasilis,A (2541)-Svetushkin,D (2608) Kavala 2013}) 14. Qxe2 Nbd7 15. Rc1 cxd4 16. Bxf8 Kxf8 17. Nxd4 g6 18. Nxc3 {[%cal Bb1c3,Bc3b5,Bb5d6][%mdl 32]} Kg7 19. Ncb5 Rhc8 20. Nc6 Qa6 21. Qf3 Nb6 (21... e5 $11) 22. Nd6 $36 {[%mdl 2048] White is on the roll.} Rc7 {Strongly threatening ...Nbd5.} 23. Ne5 {[%cal Bc6e5,Be5f7,Bf7g5,Bg5e6][%mdl 32]} Qxa4 {[#]} 24. Nexf7 $1 {And now Ng5 would win.} Rf8 {[#]} 25. Ng5 $1 Rxc1+ 26. Rxc1 Qd7 $2 {[#]} (26... Qa2 27. Qh3 Kg8) 27. Rc7 $1 $18 {[%mdl 512]} Qxc7 28. Nxe6+ {Precision: White = 72%, Black = 49%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1.3"]
[White "Straver, Robert"]
[Black "Schoppen, Casper"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "2128"]
[BlackElo "2463"]
[Annotator "ChessBase"]
[PlyCount "68"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. d4 {[%emt 0:09:53]} Nf6 {[%emt 0:10:08]} 2. Nf3 {[%emt 0:00:09]} c5 {[%emt 0:01:19]} 3. d5 {[%emt 0:00:34]} e6 {[%emt 0:00:08]} 4. c4 {[%emt 0:00:46]} d6 {[%emt 0:00:38]} 5. Nc3 {[%emt 0:00:13]} g6 {[%emt 0:00:06]} 6. e4 {[%emt 0:02:09]} Bg7 {[%emt 0:00:07]} 7. Bd3 {[%emt 0:00:54]} O-O {[%emt 0:00:23]} 8. O-O {[%emt 0:00:41]} exd5 {[%emt 0:00:04]} 9. exd5 {[%emt 0:02:30]} Bg4 {[%emt 0:00:39]} 10. h3 {[%emt 0:05:22]} Bxf3 {[%emt 0:00:15]} 11. Qxf3 {[%emt 0:00:06]} Nfd7 {[%emt 0:00:05]} 12. Qd1 {[%emt 0:01:40]} Bxc3 {[%emt 0:00:53]} 13. bxc3 {[%emt 0:00:09]} Ne5 {[%emt 0:00:10]} 14. Re1 {[%emt 0:03:58]} Nbd7 {[%emt 0:03:03]} 15. Bf1 {[%emt 0:05:59]} f5 {[%emt 0:00:57]} 16. f4 {[%emt 0:01:04]} Nf7 {[%emt 0:00:05]} 17. Rb1 {[%emt 0:01:52]} b6 {[%emt 0:01:17]} 18. Rb2 {[%emt 0:04:50]} Nf6 {[%emt 0:12:15]} 19. Bd3 {[%emt 0:03:26]} Qd7 {[%emt 0:02:44]} 20. Rbe2 {[%emt 0:14:34]} Rae8 {[%emt 0:02:56]} 21. Bd2 {[%emt 0:06:29]} Rxe2 {[%emt 0:01:26]} 22. Rxe2 {[%emt 0:00:06]} Re8 {[%emt 0:00:08]} 23. Qe1 {[%emt 0:01:29]} Rxe2 {[%emt 0:00:49]} 24. Qxe2 {[%emt 0:00:10]} a6 {[%emt 0:06:33]} 25. Be1 {[%emt 0:01:28]} Nh5 {[%emt 0:02:20]} 26. Bd2 {[%emt 0:05:37]} Qa4 {[%emt 0:04:14]} 27. g4 {[%emt 0:02:12]} Ng3 {[%emt 0:03:28]} 28. Qe1 {[%emt 0:01:13]} Qxa2 {[%emt 0:01:51]} 29. gxf5 {[%emt 0:00:58]} Nxf5 {[%emt 0:00:38]} 30. Bxf5 {[%emt 0:06:07]} gxf5 {[%emt 0:02:15]} 31. Qg3+ {[%emt 0:00:27]} Kf8 {[%emt 0:00:34]} 32. Qd3 {[%emt 0:00:10]} Qa1+ {[%emt 0:00:30]} 33. Kg2 {[%emt 0:00:42]} Qd1 {[%emt 0:00:17]} 34. Qe3 {[%emt 0:01:29]} a5 {[%emt 0:02:03]} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1.4"]
[White "Lahaye, Rick"]
[Black "Berresheim, Helmut"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "2411"]
[BlackElo "2096"]
[Annotator "NA"]
[PlyCount "79"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. Nf3 {[%emt 0:10:08]} d5 {[%emt 0:10:03]} 2. c4 {[%emt 0:00:07]} c6 {[%emt 0:00:11]} 3. b3 {[%emt 0:00:22]} Bg4 {[%emt 0:01:24]} 4. Ne5 {[%emt 0:01:09]} Bf5 {[%emt 0:02:44]} 5. Bb2 {[%emt 0:00:28]} f6 {[%emt 0:05:09]} 6. Nf3 {[%emt 0:05:57] A12: English Opening: 1...c6 with b3 by White} e5 {[%emt 0:00:23]} 7. e3 {[%emt 0:00:11]} Bd6 {[%emt 0:03:13]} 8. Nc3 {[%emt 0:01:47]} Ne7 {[%emt 0:01:13]} 9. d3 {[%emt 0:00:46]} O-O {[%emt 0:03:30]} 10. Be2 {[%emt 0:03:38]} a5 $146 {[%emt 0:05:12]} ({Predecessor:} 10... Be6 11. O-O a6 12. Re1 {0-1 (62) Lie,E (2471)-Volkov,S (2593) Fagernes 2013}) 11. O-O {[%emt 0:04:34]} Na6 {[%emt 0:00:29]} 12. e4 {[%emt 0:08:35]} Be6 {[%emt 0:08:22]} 13. cxd5 {[%emt 0:05:06]} cxd5 {[%emt 0:00:07]} 14. d4 {[%emt 0:00:10]} exd4 {[%emt 0:08:06]} 15. Nxd4 {[%emt 0:01:45]} Bf7 {[%emt 0:00:09]} 16. exd5 {[%emt 0:04:24]} Nxd5 {[%emt 0:04:41]} 17. Nxd5 {[%emt 0:00:43]} Bxd5 {[%emt 0:00:12]} 18. Nf5 {[%emt 0:00:05]} Nc7 {[%emt 0:12:27]} 19. Rc1 {[%emt 0:03:54]} Kh8 {[%emt 0:10:27]} 20. Bf3 {[%emt 0:16:55]} Be5 {[%emt 0:11:46]} 21. Ba3 {[%emt 0:03:38]} Re8 {[%emt 0:02:11]} 22. Re1 {[%emt 0:07:13]} Bxf3 {[%emt 0:03:24]} 23. Qxf3 {[%emt 0:00:16]} ({Much weaker is} 23. gxf3 Nb5 $15) 23... Qd5 {[%emt 0:00:13] [#]} 24. Qg4 $1 {[%emt 0:02:33]} g6 {[%emt 0:01:18]} 25. Ne3 {[%emt 0:01:01]} Qe6 {[%emt 0:01:53]} 26. Qf3 {[%emt 0:00:38]} Nb5 {[%emt 0:00:28]} 27. Bc5 {[%emt 0:01:30]} b6 {[%emt 0:01:10]} 28. a4 {[%emt 0:00:38]} bxc5 {[%emt 0:02:09]} 29. axb5 {[%emt 0:00:06]} Qxb3 {[%emt 0:00:05]} 30. Rxc5 {[%emt 0:00:10]} Bd4 {[%emt 0:04:00]} 31. Rc7 {[%emt 0:02:36]} f5 {[%emt 0:04:19]} 32. Rd1 $15 {[%emt 0:04:19]} (32. Qc6 $14 Qe6 33. Rd7) 32... Bxe3 {[%emt 0:04:22]} 33. fxe3 {[%emt 0:00:12]} Qxe3+ {[%emt 0:00:00]} 34. Qxe3 {[%emt 0:00:09]} Rxe3 {[%emt 0:00:00]} 35. b6 {[%emt 0:00:17]} Ree8 {[%emt 0:00:00]} 36. b7 {[%emt 0:01:17]} Rab8 {[%emt 0:00:00]} 37. Ra1 {[%emt 0:01:29]} Re5 {[%emt 0:00:00]} 38. Rc8+ {[%emt 0:00:44]} Re8 {[%emt 0:00:00]} 39. Rxe8+ {[%emt 0:00:12]} Rxe8 {[%emt 0:00:00]} 40. Rxa5 {[%emt 0:00:09]} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "2.1"]
[White "Van Wely, Loek"]
[Black "Klapwijk, Bram"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2622"]
[BlackElo "2183"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,59,4,-25,72,83,110,123,195,195,192,191,203,187,186,183,214,161,201,237,203,202,216,196,472,439,433,450,542,560,549,548,1173,1169,1099,1169,1130,1118,1101,1092]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. a3 Be6 8. d3 Be7 9. O-O O-O 10. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} f5 11. Be3 Bf6 {A29: English Opening: Four Knights Variation with 4 g3} 12. Rc1 {LiveBook: 24 Games} g5 (12... Nd4 $11 {remains equal.}) (12... Nd4 13. Nd2 c6 14. Bxd4 {½-½ (14) Iturrizaga Bonelli,E (2609)-Ragger,M (2628) Khanty-Mansiysk 2010}) 13. Nd2 $16 f4 $146 {White is better.} ({Predecessor:} 13... Qe8 14. Nb3 f4 15. Bd2 Be7 16. Ne4 Bd5 17. Nbc5 Nd4 18. a4 Qh5 19. f3 {0-1 (33) Bastos,W (2071)-Abarca Gonzalez,N (2328) Praia da Pipa 2014}) 14. Bc5 Rf7 {[#]} (14... Be7 $16) 15. b5 $1 $18 {[%cal Rb5c6]} Ne7 16. Bxb7 Rb8 17. Bg2 $36 {[%mdl 2048] White is really pushing.} g4 18. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Nf5 19. Nce4 h5 20. a5 Nc8 21. Nxf6+ Qxf6 22. Qa4 fxg3 $2 (22... Qh6 23. Nc4 Qf6) 23. fxg3 {White is clearly winning.} Qh6 24. Nc4 Nd4 25. Bxd4 exd4 {[#]} 26. b6 $1 {[%mdl 512]} cxb6 (26... axb6 27. Qe8+) 27. Qe8+ Kg7 28. Rxf7+ Bxf7 29. Qe5+ Kg8 30. Rf1 {Precision: White = 88%, Black = 21%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "2.2"]
[White "Damen, Jip"]
[Black "Nikolic, Predrag"]
[Result "0-1"]
[ECO "C34"]
[WhiteElo "2170"]
[BlackElo "2573"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,56,49,37,1,85,25,134,-12,-12,-10,-15,-86,-82,-144,-160,-150,-156,-116,-64,-56,-36,-51,0,-57,-56,-51,-55,-102,-96,-98,-97,-209,-212,-264,-265,-263,-255,-266,-275,-334,-327,-356,-354,-623,-623,-610,-615,-568,-615]} 1. e4 e5 2. Nc3 Nf6 3. f4 d6 4. Nf3 exf4 5. d4 Nh5 6. Bc4 {C34: King's Gambit Accepted: 3 Nf3: 3...Nf6 and 3...d6} (6. Be2 g6 7. O-O Bg4 8. Nd5 Bh6 9. Ne1 Bxe2 10. Qxe2 O-O 11. Nd3 Nd7 12. N3xf4 Nxf4 13. Bxf4 Bg7 14. c3 Nb6 15. Nxb6 {½-½ (15) Palac,M (2571)-Pelletier,Y (2559) Le Port Marly 2009}) 6... Be6 (6... g6 $11) 7. Qe2 (7. Bxe6 $16 fxe6 8. g4) 7... c6 $146 {[#]} (7... Bxc4 $11 {keeps the balance.} 8. Qxc4 c6) ({Predecessor:} 7... Nd7 8. Bd2 g5 9. Bxe6 fxe6 10. Ne5 Nxe5 11. dxe5 Ng7 12. O-O-O a6 13. exd6 cxd6 {0-1 (39) Brookfield,T-Iz Aldeen,K (1979) Turin 2006}) 8. O-O (8. Bxe6 $1 $16 fxe6 9. g4) 8... Bxc4 $1 $11 9. Qxc4 Be7 10. g4 (10. Ne1 $11 {remains equal.}) 10... fxg3 $17 11. Ng5 {[#]} ({Better is} 11. Ne5 Rf8 12. Nxf7) 11... gxh2+ $1 12. Kxh2 d5 $1 {[%cal Rd5c4]} 13. Qe2 Qd6+ ({Resist} 13... Bxg5 14. exd5+ Be7 15. Qxh5 $15) ({Black should try} 13... Qc7+ $17 14. e5 Bxg5 15. Bxg5 g6) 14. e5 $15 Qg6 15. Rg1 $1 Na6 (15... h6 $15 16. Nge4 Qf5 17. Nd6+ Bxd6 18. exd6+ Kf8) 16. Nge4 ({White should play} 16. Nh3 $11 Qf5 17. Rf1) 16... Qe6 17. Qxh5 {And now Ng5 would win.} g6 $1 $36 {[%cal Rg6h5][%mdl 2048] Black has some pressure.} 18. Ng5 gxh5 19. Nxe6 fxe6 20. Rg7 (20. a3 $17) 20... Nb4 $19 21. Ne2 Nxc2 22. Rb1 Rf8 23. Bf4 Kd7 24. Rd1 Rf5 25. Rxh7 Raf8 26. Rg1 $2 (26. Bh6 R8f7 27. Rxf7 Rxf7 28. Bf4) 26... Rxf4 {Black is clearly winning.} 27. Nxf4 Rxf4 28. Rgg7 Rh4+ {Accuracy: White = 12%, Black = 56%.} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "2.3"]
[White "Schoppen, Casper"]
[Black "Velden, Bram van der"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2463"]
[BlackElo "2188"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,73,54,27,77,72,70,86,148,105,107,58,113,108,147,96,154,125,176,170,165,168,211,164,160,159,183,155,160,162,206,204,200,189,169,178,249,261,300,301,278,240,367,366,328,364,985,969,29989,29990,29990,29991,29991,29992]} 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. h3 O-O 6. Be3 e5 7. d5 a5 8. g4 Na6 9. Nf3 Nc5 10. Nd2 Bd7 11. Be2 Ne8 12. Qc2 f5 {E90: King's Indian: Classical: Early deviations and 6 h3} (12... a4 13. a3 f5 14. gxf5 gxf5 15. O-O-O b6 16. Rhg1 Kh8 17. Kb1 fxe4 18. Bg4 Nf6 19. Bxc5 bxc5 20. Ndxe4 Nxe4 21. Nxe4 {1-0 (50) Goryachkina,A (2397)-Fominykh,M (2279) Khanty-Mansiysk 2012}) 13. exf5 $146 ({Predecessor:} 13. gxf5 gxf5 14. Bxc5 dxc5 15. exf5 Bxf5 16. Bd3 Nd6 17. Bxf5 Nxf5 18. Rg1 Nd4 19. Qd3 Qh4 20. Nce4 {1-0 (44) Fontaine,Q (2238)-Scoriels,M (2073) Charleroi 2016}) 13... gxf5 14. O-O-O b6 (14... Na6 $142) 15. Rhg1 Kh8 16. Kb1 a4 (16... Na6 $14) 17. a3 $16 Qh4 18. Ka2 (18. Rdf1 $142) 18... e4 (18... Nb3 $142) 19. f3 f4 (19... exf3 $16 20. Nxf3 (20. Bxf3 f4 $11) 20... Qe7) 20. Bxc5 $1 $18 bxc5 21. fxe4 ({Don't play} 21. Qxe4 $6 Bd4 $14) ({But not} 21. Ndxe4 $6 Nf6 $14) 21... Rb8 22. Nf3 Qe7 23. Bd3 Rb3 24. Rge1 Be5 25. Nxe5 Qxe5 26. Qc1 Nf6 27. Bc2 Rxc3 28. bxc3 Qxc3 (28... Kg7 $142 29. Rd3 h5) 29. Qb2 Qxc4+ 30. Ka1 {[#] And now g5 would win.} Kg8 {If only Black now had time for ...f3....} 31. e5 dxe5 (31... Nxd5 {might work better.} 32. Bb1 Qc3) 32. Rxe5 f3 33. g5 f2 $2 {[#]} (33... Ne8 34. Re7 Rf7 35. Rxf7 Kxf7) 34. gxf6 f1=Q 35. Rg5+ {White mates.} Kh8 36. f7+ $1 Qd4 37. Qxd4+ {Accuracy: White = 87%, Black = 37%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "2.4"]
[White "Hilwerda, Jonas"]
[Black "Lahaye, Rick"]
[Result "0-1"]
[ECO "C40"]
[WhiteElo "2276"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,69,77,74,76,67,118,61,72,57,54,62,126,88,162,158,202,193,185,110,119,115,126,89,106,87,95,81,87,87,82,72,144,68,69,50,91,97,94,46,76,64,78,86,156,28,24,40,27,0,-16,-246,-242,-262,-280,-275,-247,-251,-266,-578,-578,-550,-418,-4627,-3542,-5102,-5089,-5065,-2177]} 1. e4 e5 2. Nf3 Qe7 3. Nc3 c6 4. Bc4 b5 (4... d6 5. d4 Bg4 6. Bg5 Nf6 7. dxe5 dxe5 8. h3 Bh5 9. g4 Bg6 10. Qe2 Nbd7 11. O-O-O h6 12. Bh4 Qc5 13. Nd2 {1-0 (42) Cubas,J (2463)-Rodriguez Vila,A (2508) Santos 2010}) 5. Bb3 a5 {Strongly threatening ...a4.} 6. a3 $146 {C40: Latvian and Elephant Gambits} ({Predecessor:} 6. a4 b4 7. Ne2 Nf6 8. d3 Na6 9. Be3 Nc7 10. Ng3 g6 11. Qd2 Ng4 12. h3 Nxe3 13. fxe3 {0-1 (58) Narvaez Talavera,J-Alarcon,P (1837) Managua 2016}) 6... d6 7. d4 Ba6 ({Black should play} 7... h6 $14) 8. dxe5 (8. Ng5 $16 Nh6 9. Be3) 8... dxe5 $14 9. Ng5 Nh6 10. Be3 Bc8 (10... Nd7 $14) 11. Qe2 Bg4 {[#]} (11... Nd7 $16 {keeps fighting.}) 12. Bxf7+ $1 $18 {[%mdl 512]} Qxf7 (12... Nxf7 13. Qxg4) 13. Nxf7 Bxe2 14. Nxh6 (14. Nxh8 $18 Bc4 15. f3) 14... Bc4 $16 15. Nf5 g6 16. Ng3 Na6 17. b3 Be6 18. O-O h5 19. Nge2 Nc5 20. f4 a4 ({Black should try} 20... exf4 21. Rxf4 (21. Nxf4 Bf7 $16) 21... Nd7) 21. b4 (21. fxe5 $16 Nd7 22. bxa4) 21... Nd7 $14 22. f5 gxf5 23. exf5 Bc4 24. Rfe1 {Black must now prevent Nd4!} Nf6 25. Bg5 Kf7 $1 26. Ng3 Nd5 {[#]} (26... Rd8 $142) 27. Nxd5 (27. Nce4 $1 $16) 27... cxd5 $11 28. Rxe5 {aiming for Re6.} h4 29. Nf1 {Nd2 is the strong threat.} Rh5 30. Bd2 $2 (30. Bf4 $11 {and White is okay.}) 30... Bg7 $19 31. Rae1 Bxe5 32. Rxe5 {[#]} Bxf1 $1 33. Kxf1 Kf6 {[%mdl 64] Double Attack} 34. Rxd5 $2 (34. Re6+ Kxf5 35. Re7) 34... Rxf5+ 35. Rxf5+ Kxf5 {KR-KB} 36. Be3 (36. Ke2 $142 Ke4 37. g4) 36... Rc8 {Black is clearly winning.} 37. Bc5 {[#]} Rxc5 $1 {[%mdl 512]} 38. bxc5 {[#]} b4 $1 {[%mdl 512] Accuracy: White = 26%, Black = 45%.} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "3.1"]
[White "Bekker, Stefan"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2257"]
[BlackElo "2622"]
[Annotator "RC"]
[PlyCount "66"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. Nf3 {[%emt 0:11:43]} Nf6 {[%emt 0:13:57]} 2. g3 {[%emt 0:00:12]} d5 {[%emt 0:00:51]} 3. Bg2 {[%emt 0:00:58]} c6 {[%emt 0:01:01]} 4. O-O {[%emt 0:01:14]} h6 {[%emt 0:07:15]} 5. d3 {[%emt 0:01:04]} Bf5 {[%emt 0:01:18]} 6. Nbd2 {[%emt 0:00:11]} e6 {[%emt 0:00:15]} 7. b3 {[%emt 0:00:06]} Be7 {[%emt 0:00:51]} 8. Bb2 {[%emt 0:00:27]} O-O {[%emt 0:00:16]} 9. Ne5 {[%emt 0:01:31]} a5 {[%emt 0:00:45]} 10. a3 {[%emt 0:00:50]} Bh7 {[%emt 0:01:51]} 11. e4 {[%emt 0:02:56]} Nbd7 {[%emt 0:04:20]} 12. Nxd7 {[%emt 0:05:03]} Nxd7 {[%emt 0:00:10]} 13. Qe2 {[%emt 0:00:09]} Rc8 {[%emt 0:03:25]} 14. Kh1 {[%emt 0:05:08]} a4 {[%emt 0:13:05]} 15. b4 {[%emt 0:02:17]} b5 {[%emt 0:00:19]} 16. c4 {[%emt 0:01:43]} c5 {[%emt 0:11:35]} 17. d4 {[%emt 0:21:12]} cxb4 {[%emt 0:05:21]} 18. c5 {[%emt 0:01:26]} bxa3 {[%emt 0:00:33]} 19. Bxa3 {[%emt 0:01:29]} dxe4 {[%emt 0:01:00]} 20. Nxe4 {[%emt 0:03:06]} Bxe4 {[%emt 0:03:33]} 21. Bxe4 {[%emt 0:03:54]} Nf6 {[%emt 0:11:41]} 22. Bb7 {[%emt 0:00:32]} b4 {[%emt 0:02:07]} 23. Bxc8 {[%emt 0:16:34]} Qxc8 {[%emt 0:00:10]} 24. Bc1 {[%emt 0:00:37]} Qc6+ {[%emt 0:07:18]} 25. Kg1 {[%emt 0:00:34]} Rb8 {[%emt 0:04:56]} 26. Qc4 {[%emt 0:00:58]} Nd5 {[%emt 0:01:09]} 27. Bd2 {[%emt 0:00:41]} Bg5 {[%emt 0:00:13]} 28. f4 {[%emt 0:09:29]} Bf6 {[%emt 0:00:10]} 29. Rfb1 {[%emt 0:00:41]} Rd8 {[%emt 0:00:36]} 30. Qd3 {[%emt 0:09:31]} b3 {[%emt 0:02:57]} 31. Rd1 {[%emt 0:03:32]} Ne7 {[%emt 0:01:50]} 32. Bc3 {[%emt 0:00:39]} Nf5 {[%emt 0:00:46]} 33. Qc4 {[%emt 0:00:52]} Ne3 {[%emt 0:00:46]} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "3.2"]
[White "Nikolic, Predrag"]
[Black "Van Dijk, Harold"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2573"]
[BlackElo "2238"]
[Annotator "ChessBase"]
[PlyCount "61"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. Nf3 {[%emt 0:13:38]} Nf6 {[%emt 0:10:11]} 2. g3 {[%emt 0:00:07]} g6 {[%emt 0:00:12]} 3. Bg2 {[%emt 0:00:05]} Bg7 {[%emt 0:00:11]} 4. O-O {[%emt 0:00:06]} O-O {[%emt 0:00:10]} 5. d4 {[%emt 0:00:10]} c5 {[%emt 0:00:26]} 6. d5 {[%emt 0:00:31]} d6 {[%emt 0:00:52]} 7. c4 {[%emt 0:00:19]} b5 {[%emt 0:00:26]} 8. cxb5 {[%emt 0:00:18]} a6 {[%emt 0:00:19]} 9. bxa6 {[%emt 0:00:07]} Nxa6 {[%emt 0:00:17]} 10. Nc3 {[%emt 0:00:15]} Bf5 {[%emt 0:00:23]} 11. Ne1 {[%emt 0:01:45]} Rb8 {[%emt 0:05:39]} 12. Nc2 {[%emt 0:01:29]} Ng4 {[%emt 0:05:37]} 13. h3 {[%emt 0:06:05]} Ne5 {[%emt 0:00:22]} 14. Ne3 {[%emt 0:00:45]} Bc8 {[%emt 0:01:44]} 15. Rb1 {[%emt 0:06:19]} Nf3+ {[%emt 0:04:30]} 16. Bxf3 {[%emt 0:00:36]} Bxc3 {[%emt 0:00:04]} 17. h4 {[%emt 0:00:16]} Bd4 {[%emt 0:00:39]} 18. a3 {[%emt 0:03:16]} Bxe3 {[%emt 0:07:05]} 19. fxe3 {[%emt 0:02:53]} Rb7 {[%emt 0:04:33]} 20. Bd2 {[%emt 0:03:50]} Nb8 {[%emt 0:00:07]} 21. b4 {[%emt 0:01:12]} cxb4 {[%emt 0:00:06]} 22. axb4 {[%emt 0:04:31]} Qb6 {[%emt 0:00:09]} 23. Rc1 {[%emt 0:12:53]} Bd7 {[%emt 0:03:10]} 24. Qc2 {[%emt 0:02:42]} Bb5 {[%emt 0:12:21]} 25. Qe4 {[%emt 0:00:23]} Qd8 {[%emt 0:01:14]} 26. h5 {[%emt 0:02:54]} Kg7 {[%emt 0:00:45]} 27. Kg2 {[%emt 0:02:14]} g5 {[%emt 0:03:56]} 28. Qf5 {[%emt 0:04:51]} f6 {[%emt 0:00:05]} 29. h6+ {[%emt 0:00:36]} Kh8 {[%emt 0:01:55]} 30. Be4 {[%emt 0:00:08]} e6 {[%emt 0:00:32]} 31. dxe6 {[%emt 0:00:10]} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "3.3"]
[White "Van Vliet, Jeffrey"]
[Black "Clemens, Adrian"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2379"]
[BlackElo "2126"]
[Annotator "NA"]
[PlyCount "109"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. e4 {[%emt 0:12:57]} c5 {[%emt 0:10:16]} 2. Nf3 {[%emt 0:00:08]} d6 {[%emt 0:00:16]} 3. c3 {[%emt 0:00:38]} Nf6 {[%emt 0:01:54]} 4. Be2 {[%emt 0:00:06]} g6 {[%emt 0:03:17]} 5. O-O {[%emt 0:00:14]} Bg7 {[%emt 0:00:06]} 6. Re1 {[%emt 0:00:11]} O-O {[%emt 0:00:59]} 7. Bf1 {[%emt 0:00:11]} Nc6 {[%emt 0:05:11]} 8. d3 {[%emt 0:09:44]} b6 {[%emt 0:06:46]} 9. Nbd2 {[%emt 0:10:15]} Bb7 {[%emt 0:03:17]} 10. d4 {[%emt 0:01:08]} cxd4 {[%emt 0:05:35]} 11. cxd4 {[%emt 0:00:09]} e6 {[%emt 0:06:06]} 12. b3 {[%emt 0:10:54]} d5 {[%emt 0:15:06]} 13. e5 {[%emt 0:00:29]} Nd7 {[%emt 0:00:44]} 14. Ba3 {[%emt 0:05:37]} Re8 {[%emt 0:00:09]} 15. Rc1 {[%emt 0:01:35]} Rc8 {[%emt 0:01:12]} 16. Bd3 {[%emt 0:09:33]} Ndb8 {[%emt 0:03:38]} 17. Qe2 {[%emt 0:01:09]} Qd7 {[%emt 0:05:10]} 18. Bd6 {[%emt 0:07:36]} Bf8 {[%emt 0:12:26]} 19. Bxf8 {[%emt 0:00:54]} Rxf8 {[%emt 0:00:39]} 20. a3 {[%emt 0:06:30]} Ne7 {[%emt 0:04:12]} 21. Nf1 {[%emt 0:12:58]} Kg7 {[%emt 0:03:14]} 22. Ne3 {[%emt 0:03:42]} Ng8 {[%emt 0:02:55]} 23. h4 {[%emt 0:01:45]} Qe7 {[%emt 0:02:07]} 24. b4 {[%emt 0:00:25]} Rxc1 {[%emt 0:02:01]} 25. Rxc1 {[%emt 0:00:06]} Rc8 {[%emt 0:00:05]} 26. Qd2 {[%emt 0:00:47]} Qd8 {[%emt 0:03:00]} 27. Ng4 {[%emt 0:01:30]} Nd7 {[%emt 0:02:55]} 28. Rxc8 {[%emt 0:01:34]} Bxc8 {[%emt 0:00:06]} 29. Qf4 {[%emt 0:01:51]} Qe7 {[%emt 0:03:21]} 30. Bb5 {[%emt 0:00:24]} Nf8 {[%emt 0:00:08]} 31. h5 {[%emt 0:02:04]} gxh5 {[%emt 0:00:38]} 32. Nf6 {[%emt 0:00:11]} Ng6 {[%emt 0:02:53]} 33. Qc1 {[%emt 0:00:55]} Bb7 {[%emt 0:00:42]} 34. Nxh5+ {[%emt 0:00:32]} Kh8 {[%emt 0:01:00]} 35. g3 {[%emt 0:02:43]} Qd8 {[%emt 0:02:06]} 36. Bd3 {[%emt 0:02:17]} h6 {[%emt 0:00:36]} 37. Bxg6 {[%emt 0:00:49]} fxg6 {[%emt 0:00:04]} 38. Nf4 {[%emt 0:00:03]} Qe8 {[%emt 0:00:22]} 39. Qc7 {[%emt 0:00:17]} g5 {[%emt 0:00:07]} 40. Nxe6 {[%emt 0:00:58]} Qxe6 {[%emt 0:00:02]} 41. Qxb7 {[%emt 0:00:05]} Ne7 {[%emt 0:00:13]} 42. Qxa7 {[%emt 0:00:15]} Nf5 {[%emt 0:00:03]} 43. Qb8+ {[%emt 0:00:17]} Kh7 {[%emt 0:00:06]} 44. Qc7+ {[%emt 0:00:16]} Kg8 {[%emt 0:00:02]} 45. Qc3 {[%emt 0:00:25]} g4 {[%emt 0:00:17]} 46. Nh4 {[%emt 0:00:08]} Ne7 {[%emt 0:00:19]} 47. Ng2 {[%emt 0:00:03]} Qf5 {[%emt 0:00:09]} 48. Ne3 {[%emt 0:00:16]} Qb1+ {[%emt 0:00:04]} 49. Kg2 {[%emt 0:00:02]} Qe4+ {[%emt 0:00:02]} 50. Kg1 {[%emt 0:00:05]} Qb1+ {[%emt 0:00:01]} 51. Kh2 {[%emt 0:00:06]} Qa2 {[%emt 0:00:01]} 52. Nxg4 {[%emt 0:00:09]} h5 {[%emt 0:00:03]} 53. Nf6+ {[%emt 0:00:03]} Kf7 {[%emt 0:00:01]} 54. Qf3 {[%emt 0:00:04]} Ke6 {[%emt 0:00:04]} 55. Nxh5 {[%emt 0:00:19]} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "3.4"]
[White "Lahaye, Rick"]
[Black "Elgersma, Simon"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2411"]
[BlackElo "2148"]
[Annotator "NA"]
[PlyCount "155"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. d4 {[%emt 0:10:15]} e6 {[%emt 0:10:04]} 2. e3 {[%emt 0:00:54]} Nf6 {[%emt 0:00:56]} 3. Bd3 {[%emt 0:00:10]} d5 {[%emt 0:01:50]} 4. Nd2 {[%emt 0:00:40]} c5 {[%emt 0:03:08]} 5. c3 {[%emt 0:05:17]} Nbd7 {[%emt 0:04:54]} 6. Ngf3 {[%emt 0:05:49]} Bd6 {[%emt 0:02:48]} 7. O-O {[%emt 0:00:12]} O-O {[%emt 0:02:43]} 8. Re1 {[%emt 0:02:03]} e5 {[%emt 0:09:07]} 9. e4 {[%emt 0:18:13]} cxd4 {[%emt 0:16:26]} 10. cxd4 {[%emt 0:04:41]} Re8 {[%emt 0:15:53]} 11. exd5 {[%emt 0:14:32]} exd4 {[%emt 0:05:04]} 12. Ne4 {[%emt 0:10:20]} Ne5 {[%emt 0:10:01]} 13. Bg5 {[%emt 0:13:11]} Bg4 {[%emt 0:04:35]} 14. Bxf6 {[%emt 0:01:49]} gxf6 {[%emt 0:01:03]} 15. Be2 {[%emt 0:03:10]} f5 {[%emt 0:12:39]} 16. Nxd6 {[%emt 0:12:56]} Qxd6 {[%emt 0:00:16]} 17. Qxd4 {[%emt 0:00:09]} Bxf3 {[%emt 0:01:13]} 18. Bxf3 {[%emt 0:00:13]} Re7 {[%emt 0:01:33]} 19. Re3 {[%emt 0:01:49]} Rae8 {[%emt 0:02:46]} 20. Rae1 {[%emt 0:01:44]} f6 {[%emt 0:04:06]} 21. Kh1 {[%emt 0:00:28]} Rd8 {[%emt 0:00:48]} 22. Bd1 {[%emt 0:00:49]} Kh8 {[%emt 0:00:26]} 23. h3 {[%emt 0:02:48]} Nc6 {[%emt 0:00:52]} 24. Qh4 {[%emt 0:00:14]} Ne5 {[%emt 0:00:19]} 25. Bb3 {[%emt 0:00:38]} Ng6 {[%emt 0:00:08]} 26. Qd4 {[%emt 0:00:07]} Re5 {[%emt 0:00:18]} 27. Qxa7 {[%emt 0:00:34]} Qb4 {[%emt 0:00:15]} 28. Rxe5 {[%emt 0:00:26]} fxe5 {[%emt 0:00:01]} 29. Qe3 {[%emt 0:00:06]} f4 {[%emt 0:00:01]} 30. Qe2 {[%emt 0:00:09]} Re8 {[%emt 0:00:06]} 31. Qe4 {[%emt 0:00:09]} Qd2 {[%emt 0:00:04]} 32. Re2 {[%emt 0:00:03]} Qc1+ {[%emt 0:00:01]} 33. Kh2 {[%emt 0:00:01]} Qc7 {[%emt 0:00:05]} 34. f3 {[%emt 0:00:17]} Qe7 {[%emt 0:00:00]} 35. d6 {[%emt 0:00:15]} Qxd6 {[%emt 0:00:09]} 36. Bf7 {[%emt 0:00:07]} Re7 {[%emt 0:00:05]} 37. Bxg6 {[%emt 0:00:25]} hxg6 {[%emt 0:00:01]} 38. Rc2 {[%emt 0:00:06]} Kg7 {[%emt 0:00:06]} 39. Rc8 {[%emt 0:00:19]} Qe6 {[%emt 0:00:17]} 40. Ra8 {[%emt 0:00:10]} Rd7 {[%emt 0:00:10]} 41. Qb4 {[%emt 0:00:15]} Qf6 {[%emt 0:00:02]} 42. Rb8 {[%emt 0:00:06]} Qf7 {[%emt 0:00:28]} 43. Qc5 {[%emt 0:00:07]} Re7 {[%emt 0:00:23]} 44. Qc8 {[%emt 0:00:06]} Kh6 {[%emt 0:00:24]} 45. Qh8+ {[%emt 0:00:04]} Qh7 {[%emt 0:00:08]} 46. Qf6 {[%emt 0:00:03]} Rf7 {[%emt 0:00:16]} 47. Qxe5 {[%emt 0:00:09]} Rf5 {[%emt 0:00:10]} 48. Qh8 {[%emt 0:00:24]} Qxh8 {[%emt 0:00:09]} 49. Rxh8+ {[%emt 0:00:01]} Kg7 {[%emt 0:00:07]} 50. Rd8 {[%emt 0:00:11]} Rb5 {[%emt 0:00:06]} 51. b3 {[%emt 0:00:02]} Kf6 {[%emt 0:00:02]} 52. Rd4 {[%emt 0:00:11]} Ke5 {[%emt 0:00:08]} 53. Rc4 {[%emt 0:00:12]} Rd5 {[%emt 0:00:07]} 54. Rb4 {[%emt 0:00:05]} b5 {[%emt 0:00:29]} 55. h4 {[%emt 0:00:15]} Kf5 {[%emt 0:00:03]} 56. Kh3 {[%emt 0:00:05]} Rc5 {[%emt 0:00:34]} 57. g3 {[%emt 0:00:16]} fxg3 {[%emt 0:00:09]} 58. Kxg3 {[%emt 0:00:02]} Kf6 {[%emt 0:00:05]} 59. Kg4 {[%emt 0:00:11]} Rd5 {[%emt 0:00:12]} 60. Rf4+ {[%emt 0:00:12]} Ke6 {[%emt 0:00:04]} 61. a4 {[%emt 0:00:10]} Rd3 {[%emt 0:00:08]} 62. Rb4 {[%emt 0:00:17]} bxa4 {[%emt 0:00:11]} 63. bxa4 {[%emt 0:00:02]} Ra3 {[%emt 0:00:06]} 64. Rb6+ {[%emt 0:00:15]} Kf7 {[%emt 0:00:04]} 65. Ra6 {[%emt 0:00:02]} Ra1 {[%emt 0:00:04]} 66. Ra7+ {[%emt 0:00:39]} Kf6 {[%emt 0:00:09]} 67. a5 {[%emt 0:00:03]} Ra4+ {[%emt 0:00:01]} 68. f4 {[%emt 0:00:01]} Ra1 {[%emt 0:00:03]} 69. Ra6+ {[%emt 0:00:02]} Kg7 {[%emt 0:00:01]} 70. Ra8 {[%emt 0:00:13]} Kh7 {[%emt 0:00:31]} 71. a6 {[%emt 0:00:01]} Kg7 {[%emt 0:00:15]} 72. a7 {[%emt 0:00:37]} Ra3 {[%emt 0:00:07]} 73. h5 {[%emt 0:00:02]} gxh5+ {[%emt 0:00:36]} 74. Kxh5 {[%emt 0:00:01]} Ra5+ {[%emt 0:00:28]} 75. Kg4 {[%emt 0:00:04]} Kh7 {[%emt 0:00:03]} 76. f5 {[%emt 0:00:02]} Kg7 {[%emt 0:00:19]} 77. f6+ {[%emt 0:00:02]} Kh7 {[%emt 0:00:06]} 78. f7 {[%emt 0:00:02]} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "4.1"]
[White "Van Wely, Loek"]
[Black "Van Vliet, Jeffrey"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2622"]
[BlackElo "2379"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,117,22,47,12,0,6,8,0,0,0,5,-9,0,-14,0,0,54,54,48,43,47,50,54,56,63,17,21,-10,8,9,8,10,16,0,10,12,154,106,75,95,123,114,123,115,120,119,133,129,235,241,442,547,527,163,241,237,234,177,179,179,174,171,181,178,186,189,188,186,198,191,247,248,254,249,250,253,299,297,295,318,314,307,315,322,348,339,326,288,407,442,429,448,436,427,398,346,329,253,245,245,244,235,231,232,491,472,533,514,29982,29983]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. e3 a6 5. Bd3 Bg4 6. Qb3 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (6. Nbd2 e6 7. h3 Bh5 8. Qc2 dxc4 9. Nxc4 Bxf3 10. gxf3 c5 11. dxc5 Bxc5 12. a3 Nc6 13. b4 Be7 {0-1 (36) Nakamura,H (2786)-Carlsen,M (2832) chess.com INT 2018}) 6... Bxf3 7. gxf3 Qc7 8. cxd5 {The position is equal.} cxd5 9. Nc3 e6 10. e4 {[%cal Re4d5]} Nc6 11. Be3 {[%cal Re4d5]} Bb4 12. O-O-O O-O-O $146 (12... Bxc3 $11 13. Qxc3 Rc8) ({Predecessor:} 12... O-O 13. Kb1 Rfd8 {½-½ (34) Neubauer,M (2448)-Firat,B (2365) Novi Sad 2009}) 13. Kb1 Bxc3 14. Qxc3 Kb8 15. Rhg1 Nh5 16. Rc1 Qb6 $1 17. f4 g6 18. f5 exf5 (18... e5 $5 19. exd5 Nxd4 $11) 19. exf5 Rhe8 20. Qd2 Ka8 21. Rc3 Nf6 22. f3 Nxd4 (22... Ng8 $11 {keeps the balance.}) 23. Qf2 Rxe3 24. Qxe3 Re8 25. Qf2 Ka7 26. Rgc1 {Threatens to win with Bxa6!} Nc6 {[#]} 27. Qh4 $1 {[%cal Rh4f6]} Na5 28. Qf4 d4 (28... Rd8 $16 {keeps fighting.}) 29. Rc5 $18 ({But not} 29. Rc8 $6 Nc6 $16) 29... Nc6 $2 (29... Re3 {might work better.}) 30. fxg6 Nb4 31. Bf1 $2 {[#]} (31. Rc8 {[%csl Gc8][%cal Rf4b8]} Nd7 32. gxh7 Nxd3 33. Qd2) 31... hxg6 (31... Nfd5 {was worth a try.} 32. Qd2 (32. Qxf7 Re7 $16) (32. Qxd4 Qxg6+ 33. Ka1 b6 $16) 32... hxg6) 32. Qxd4 Rd8 33. Qc3 Nfd5 34. Qb3 Nc6 35. Qxb6+ Kxb6 36. R5c2 Ne3 37. Re2 Nf5 38. Bh3 Nfd4 39. Rf2 Ne5 (39... Rd6 $142 40. f4 Rf6) 40. Rd1 Nec6 41. f4 Rh8 42. Bd7 Rh4 43. Bxc6 Nxc6 {[%mdl 4096] Endgame KRR-KRN} 44. Rd7 f5 45. a3 Rg4 46. Ka2 Na5 47. Re2 Rxf4 48. Re6+ Nc6 (48... Ka7 {was necessary.} 49. Rxg6 Rf2) 49. Rxg6 Rh4 50. Rgg7 Rxh2 51. Rxb7+ Kc5 52. Rbc7 Rh6 53. Rgf7 Kd6 54. Rc8 Nd4 55. Ra8 Ke5 56. Re7+ Ne6 $2 (56... Kf4 {is a better defense.} 57. Rae8 Rd6) 57. Rxa6 f4 58. Rf7 Rf6 (58... Rh2 $18 59. a4 Nd4) 59. Ra5+ {Accuracy: White = 76%, Black = 38%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "4.2"]
[White "Wantola, Ivo"]
[Black "Nikolic, Predrag"]
[Result "0-1"]
[ECO "D25"]
[WhiteElo "2342"]
[BlackElo "2573"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,68,20,9,40,35,23,32,34,30,33,34,24,25,39,41,38,20,22,-52,-57,-46,-37,-57,-14,-33,-6,0,18,15,17,14,27,-50,-39,-132,-119,-119,-122,-150,-150,-150,-150,-160,-163,-193,-169,-275,-275,-251,-204,-293,-284,-329,-317,-300,-295]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 Bg4 5. h3 Bh5 6. Bxc4 e6 7. Qb3 Bxf3 8. gxf3 b6 {D25: Queen's Gambit Accepted: 4 e3: sidelines and 4...Bg4} (8... Nbd7 9. Qxb7 c5 10. dxc5 Bxc5 11. Nc3 Rb8 12. Qa6 O-O 13. Bb3 Ne5 14. Qe2 Rb4 15. Rg1 Rh4 16. f4 {0-1 (24) Paragua,M (2520)-Stukopin,A (2577) Philadelphia 2017}) 9. Nc3 Be7 10. d5 exd5 {White is slightly better.} 11. Nxd5 O-O $146 12. Nxe7+ Qxe7 13. Bd2 Nc6 14. O-O-O Rab8 15. Qc2 b5 16. Be2 (16. Bb3 $11 Ne5 17. f4) 16... Nd4 $1 $15 {[%cal Rd4c2][%mdl 64] [#] Double Attack, Pin} 17. Qd3 Nxe2+ 18. Qxe2 Rfd8 19. Kb1 Rd7 20. e4 $1 h6 21. Be3 a6 22. Rhg1 Kh8 23. Bd4 (23. Qc2 $11) 23... Rbd8 $36 {[%mdl 2048] Black has good play.} 24. Bxf6 (24. Be3 $15) 24... Qxf6 25. Rxd7 Rxd7 {[%mdl 4096] Endgame KQR-KQR} 26. Rd1 Qe6 27. Rxd7 Qxd7 $17 {KQ-KQ} 28. Qf1 Qd2 29. a3 c5 30. Qg2 (30. h4 {was worth a try.}) 30... h5 $19 31. Qg3 Kh7 32. e5 (32. Ka2 $142 Qd4 33. Qc7) 32... g5 {Black has a decisive advantage.} 33. e6 Qe1+ ({Not} 33... fxe6 34. Qc7+ Kg6 35. Qc8 $17) 34. Kc2 Qxe6 {Accuracy: White = 30%, Black = 71%.} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "4.3"]
[White "Wiersma, Eelke"]
[Black "Slingerland, Fred"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2338"]
[BlackElo "2355"]
[Annotator "NA"]
[PlyCount "27"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "6600+10"]

1. e4 {[%emt 0:09:57]} c5 {[%emt 0:09:54]} 2. Nf3 {[%emt 0:00:08]} d6 {[%emt 0:00:06]} 3. Bb5+ {[%emt 0:00:10]} Bd7 {[%emt 0:00:04]} 4. Bxd7+ {[%emt 0:00:08]} Qxd7 {[%emt 0:00:03]} 5. O-O {[%emt 0:00:09]} Nc6 {[%emt 0:00:02]} 6. Qe2 {[%emt 0:00:10]} g6 {[%emt 0:01:15]} 7. c3 {[%emt 0:02:18]} Bg7 {[%emt 0:00:05]} 8. Rd1 {[%emt 0:00:20]} e5 {[%emt 0:01:45]} 9. b4 {[%emt 0:02:26]} cxb4 {[%emt 0:12:52]} 10. cxb4 {[%emt 0:00:15]} Nxb4 {[%emt 0:00:06]} 11. d4 {[%emt 0:03:17]} exd4 {[%emt 0:11:47]} 12. Nxd4 {[%emt 0:02:16]} Ne7 {[%emt 0:00:14]} 13. Bb2 {[%emt 0:07:11]} O-O {[%emt 0:02:45]} 14. Na3 {[%emt 0:05:07]} 1/2-1/2

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "4.4"]
[White "Van der Werf, Mark"]
[Black "Van Wissen, Michiel"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2412"]
[BlackElo "2264"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,91,60,41,59,41,47,29,33,30,33,30,23,0,0,0,0,0,-18,-15,15,19,31,0,22,0,24,27,27,7,8,6,3,3,63,40,49,54,56,78,114,70,72,56,108,88,102,94,127,19,94,0,0,0,80,95,200,170,174,168,148,0,0,-29996,232,236,241,217,1533,1537,1204,872,29981,29982,29986,29987,29990,29991]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 5. e4 d6 6. Bxc4 g6 7. Nf3 Bg7 8. O-O O-O 9. Re1 Nfd7 {A57: Benko/Volga Gambit} (9... Nbd7 10. Nc3 Ng4 11. Bf1 Nde5 12. Nxe5 Nxe5 13. Bg5 Rb8 14. Rad1 f6 15. Bf4 f5 16. b3 Rb4 17. Bd2 {1-0 (56) Dreev,A (2679)-Ivanisevic,I (2632) Jakarta 2013}) 10. Bf4 Nb6 11. Bf1 $146 ({Predecessor:} 11. Nbd2 Ba6 12. Rab1 Nxc4 13. Nxc4 Bxc4 14. Qxc4 Nd7 15. Qe2 Qa5 16. b3 Rfe8 17. h4 {½-½ (54) Finegold,B (2539)-Gersov,E (2339) Philadelphia 2003}) 11... Ba6 {White has an edge.} 12. Nc3 Bxf1 13. Kxf1 N8d7 14. Rad1 Nc4 15. Qe2 Nce5 16. Nd2 Rb8 17. b3 h6 18. Rc1 g5 19. Be3 Qa5 20. Rc2 Rb6 {[#]} 21. h4 $1 {[%mdl 512]} g4 (21... gxh4 22. f4) 22. Nd1 Qa6 23. Nc4 Nxc4 24. bxc4 {aiming for Bxh6!} Ne5 (24... h5 $11) 25. Bf4 $14 Ng6 $1 {[%cal Rg6f4]} 26. Qxg4 h5 27. Qf3 Rb1 28. Bg3 Qa4 $1 {[%cal Ra4c2]} 29. Qe2 Bd4 ({Black should try} 29... Rfb8 $14) 30. Kg1 $16 Rfb8 31. Kh2 Ra1 32. f3 ({White should play} 32. f4 $16) 32... Rbb1 (32... Ne5 $1 $11) 33. Nc3 (33. f4 $1 $16) 33... Rxe1 $11 34. Bxe1 Be5+ (34... Qb4 $11 {remains equal.}) 35. g3 $1 $16 Qa5 (35... Qb4 $16) 36. f4 $36 {[%mdl 2048] Keeping Black busy.} Bd4 37. Bd2 Qa6 {[#]} 38. Rb2 ({Much less strong is} 38. Qxh5 Rf1 $16) ({White must play} 38. e5 $1 $16) 38... Qc8 $11 {( -> ...Rh1+!)} 39. Rb3 $2 {[%mdl 8192] [#]} (39. Qf3 $11) 39... Kg7 $4 {[%mdl 8192]} (39... Rh1+ $1 {[%mdl 512] mates} 40. Kxh1 Qh3+ {[%mdl 64] Double Attack} 41. Qh2 Qf1+ {[%mdl 64] Double Attack} 42. Qg1 Qxg1#) 40. f5 $18 Ne5 {...Ng4+ is the strong threat.} 41. Qxh5 Qh8 $2 (41... Nd7 42. Bg5 Nf6) 42. Qg5+ {[%mdl 64] Double Attack} Ng6 43. fxg6 {h5 would kill now.} f6 44. Qg4 {White mates.} Rf1 45. Rb7 Qe8 46. Qe6 {Accuracy: White = 50%, Black = 37%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "5.1"]
[White "Nikolic, Predrag"]
[Black "Van Wely, Loek"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2573"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,129,8,13,6,5,8,12,14,42,42,38,41,22,24,71,32,61,64,61,59,59,53,63,63,63,56,56,43,64,58,121,100,120,120,120,120,120,120,120,120,229,105,124,68,68,76,75,81,84,39,39,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,29957,12850,4602,485,5708,0,0,0,0,0,29961,3957,3697,3148,2662,600,29978,29979,29979,29980,29980,29981,29983,29984,29984,29985,29985,29986,29987,29988,29988,29989,29989,29990]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. Qe2 cxd4 10. Rd1 e5 11. exd4 exd4 12. Nxd4 Nxd4 13. Qe5 Qd6 14. Qxd6 Bxd6 15. Rxd4 Be5 16. Rh4 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} O-O 17. Bf4 Bxf4 18. Rxf4 {The position is equal.} Bd7 19. Nd5 Nxd5 20. Bxd5 {[#]} a5 $146 ({Predecessor:} 20... Rab8 21. Rc1 Be6 22. Bxe6 fxe6 23. Rxf8+ Rxf8 24. g3 Rd8 25. Rc7 Rd4 26. Rxb7 Rxa4 27. Re7 Re4 28. Ra7 Ra4 29. Kg2 a5 30. b4 {½-½ (30) Kunin,V (2541)-Donchenko,A (2569) Zuerich 2017}) 21. Rc1 Ra6 22. h3 (22. Bxb7 {seems wilder.} Rb6 23. Bd5 Rd6 24. Bc4 g5 25. Rf3) 22... Bc6 23. Bxc6 bxc6 $14 {[%mdl 4096] Endgame KRR-KRR} 24. Rfc4 Rc8 25. R1c3 Rb6 26. b3 Kf8 27. Rc5 Ra6 $1 28. Kf1 Rb8 29. g3 Rb4 ({Black should try} 29... Rc8 $14) 30. h4 Rab6 31. Rxc6 Rxc6 32. Rxc6 Rxb3 $16 {KR-KR} 33. Rc5 Ra3 34. Rxa5 h5 (34... Ke7 $16 35. Ra7+ Ke6) 35. Ke2 ({Resist} 35. Rxh5 $6 Rxa4 36. Rb5 Ke7 $16) (35. Ra7 $1 $18) 35... Ke7 36. Re5+ (36. Ra8 $16) 36... Kf6 $1 $14 {[%cal Rf6e5]} 37. Re4 Kf5 38. Rf4+ Ke6 39. Kd2 f6 $1 40. Kc2 g5 41. Kb2 Rd3 42. Rc4 gxh4 43. gxh4 {Strongly threatening a5.} Kd5 44. Rf4 {aiming for a5.} Ke5 45. Rb4 {Hoping for Rb5+.} Rd2+ 46. Kb3 Rxf2 47. a5 {Threatens to win with a6.} Rf3+ 48. Ka4 Rd3 $2 {[%mdl 8192]} (48... Kd6 $11) 49. a6 Rd8 50. Rb5+ (50. Ka5 $142 Ra8 51. Rb5+ Ke4 52. Rxh5) 50... Ke4 {[#]} (50... Kd6 $142 51. Ka5 Kc7) 51. Rxh5 $2 (51. Ka5 $1 $18 Kf4 52. Rxh5) 51... f5 $1 $11 52. a7 f4 53. Rh7 Kf5 $2 {[%mdl 8192]} (53... f3 $11) 54. Kb5 (54. Ka5 $142 Kg6 55. Rb7 Ra8 56. Ka6 f3 57. Rb6+ Kh5 58. Rf6 Re8 59. Rxf3) 54... Kg6 $18 55. Rd7 Rf8 56. Rd6+ (56. Rb7 $142 Ra8 57. Ka6) 56... Kf5 {Black hopes to continue with ...f3.} 57. Ra6 {White mates.} Ra8 58. Kb6 Kg4 {[#]} 59. Ra4 $1 Rf8 60. a8=Q Rxa8 61. Rxa8 Kxh4 62. Kc5 f3 63. Kd4 f2 64. Rf8 Kg3 65. Ke3 {Accuracy: White = 51%, Black = 50%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "5.2"]
[White "Van der Werf, Mark"]
[Black "Lahaye, Rick"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2412"]
[BlackElo "2411"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,59,73,120,125,125,123,119,107,110,91,106,102,97,82,131,136,138,138,154,106,181,170,181,181,262,250,253,252,308,318,374,350,370,352,379,272,281,280,382,382,497,427,814,810,781,709,723,715,1337,1317,1239,1205]} 1. c4 d6 2. d4 Nd7 3. Nc3 c5 4. d5 Ngf6 5. e4 b5 6. cxb5 {A41: 1 d4 d6: Tartakower System and Modern Defence} a6 7. a4 g6 8. Nf3 {White is better.} Bg7 9. Bd2 O-O 10. Be2 axb5 11. axb5 Rb8 $146 ({Predecessor:} 11... Bb7 12. O-O Nb6 13. Qc2 Qd7 14. h3 e6 15. dxe6 Qxe6 16. Rxa8 Rxa8 {0-1 (70) Karjakin,S (2783)-Nepomniachtchi,I (2751) chess.com INT 2017}) 12. O-O Nb6 13. Bf4 Ne8 14. h3 e5 {[#]} (14... Nc7 $16 {is a better defense.}) 15. dxe6 $1 $18 fxe6 16. Qd2 Qc7 (16... Bb7 {was called for.} 17. Bh6 Qe7 18. Bxg7 Qxg7) 17. Rfd1 e5 18. Be3 Be6 19. Rdc1 Qb7 20. Na4 Nxa4 21. Rxa4 Bf6 22. Bg5 Bb3 23. Ra3 Be6 24. Bxf6 Rxf6 25. Ng5 {White is clearly winning.} Bd7 (25... Kh8 $142 26. Rca1 Bg8) 26. Rca1 Nc7 27. Ra7 Qc8 28. b4 cxb4 29. Rc1 Rb7 30. b6 {Accuracy: White = 87%, Black = 42%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "5.3"]
[White "Kaufeld, Juergen"]
[Black "Schoppen, Casper"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2213"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,122,15,17,10,13,12,14,12,16,14,15,0,0,0,0,0,0,0,0,0,12,0,0,0,0,0,0,4,4,0,2,0,-3,-3,-3,-10,-15,-10,-3,-25,-25,-40,-18,-52,-43,-48,-22,-95,0,-17,0,0,7,7,14,0,15,0,14,0,0,0,0,32,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-13,-13,-13,-13,-31,0,-43,0,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-45,-49,-45,-50,-49,-50,-50,-101,-88,-1516,-1513]} 1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Bg5 {E05: Open Catalan: 5 Nf3 Be7} Bc6 10. Rd1 a5 11. Nbd2 {The position is equal.} Na6 12. Nxc4 Nb4 13. Qb3 Bd5 14. Nfe5 c6 15. Bxf6 Bxf6 {[#]} 16. e4 $146 ({Predecessor:} 16. Ng4 Bxc4 17. Qxc4 {½-½ (45) Erdos,V (2622)-Kovacs,G (2463) Hungary 2017}) 16... Bxc4 17. Qxc4 Qc7 (17... g6 {feels hotter.} 18. Rac1 h5 19. Qe2 h4 20. Nf3 hxg3 21. hxg3 Kg7) 18. Nd3 Nxd3 19. Rxd3 Qb6 20. b3 Rfd8 {[%cal Rd8d4]} 21. Rad1 Rac8 {[%cal Ba8c8,Bc8c7,Bc7d7][%mdl 32]} 22. h4 Rc7 23. Kh2 Rcd7 {[%cal Rd7d4]} 24. e5 Be7 25. Bh3 Ba3 26. R1d2 Qb4 27. f4 g6 28. h5 Kg7 29. Bg2 gxh5 30. Be4 {[#]} h4 $1 {[%mdl 512]} 31. f5 {[#]} (31. gxh4 $11 Qe7 32. Kh3) 31... hxg3+ (31... Qxc4 $1 $17 32. bxc4 Bc1) 32. Kxg3 exf5 33. Bxf5 Re7 34. Kf3 Rg8 35. Rg2+ Kh8 36. Qc2 Rxg2 37. Qxg2 {Hoping for Ke2.} Qe1 38. Qh2 {[%csl Gf5][%cal Rh2h7]} f6 $1 39. exf6 Rf7 $1 40. Qh5 Qf1+ 41. Kg4 Qg1+ 42. Kf3 $132 {[%mdl 2048] White is not keeping still} Qg8 43. Qh4 Qd8 44. Re3 Qd5+ 45. Qe4 Qxe4+ 46. Rxe4 Rxf6 $11 {[%mdl 4096] Endgame KRB-KRB} 47. Re8+ Kg7 48. Ke4 h5 49. Rd8 Kh6 50. d5 cxd5+ 51. Rxd5 Bb4 52. Rd7 b6 53. Kf4 {[%csl Gf5][%cal Rd7h7]} Bd6+ 54. Ke4 Bg3 55. Rh7+ Kg5 56. Rg7+ Kh4 57. Rg8 Rf7 58. Rg6 Bf2 59. Rg2 Bg3 60. Rc2 (60. Rd2 $15) 60... Kg5 $17 61. Rc6 $2 {[%mdl 8192]} (61. Bh3 $17) 61... Rxf5 {Accuracy: White = 46%, Black = 70%.} 0-1

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "5.4"]
[White "Bekker, Stefan"]
[Black "Wiersma, Eelke"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2257"]
[BlackElo "2338"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,129,20,33,-3,14,6,31,0,13,2,18,0,0,0,16,0,0,7,14,0,0,-11,-11,-11,-16,-15,-9,-8,-8,-7,-4,-16,-6,-47,0,0,9,9,26,0,109,14,10,0,0,0,14,17,0,0,5,2,5,0,29,4,0,-29,0,-8,0,0,41,37,32,16,47,-3,6,3,3,3,48,22,34,39,160,153,479,493,458,428,594,237,208,205,201,21,1087,718,1964,505,29972,29960,29959,29958,12842,194,194,39,29973,29974,29974,29973,29969,29972,29971,29973,29969,29973,29973,29974,29977,29977,29979,29980]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O Nb6 {C41: Philidor Defence} 7. Be2 exd4 8. Nxd4 O-O {LiveBook: 132 Games. The position is equal.} 9. Kh1 $146 ({Predecessor:} 9. Bf4) 9... d5 10. e5 Ne8 11. f4 c5 12. Nb3 g6 13. Bf3 Be6 14. a4 {a5 is the strong threat.} a5 15. Qe1 Qd7 16. Qf2 d4 17. Ne4 Nxa4 18. Rxa4 (18. Re1 {feels hotter.} Bxb3 19. cxb3 Nb6 20. g4 f5 21. gxf5 Qxf5 22. Ng3) 18... Qxa4 19. Nexc5 Bxc5 20. Nxc5 Qc4 21. Nxe6 fxe6 22. Bxb7 Rd8 23. Be4 a4 24. Bd3 Qb4 25. h4 Ng7 26. g4 $1 Rd7 27. Qg2 Kh8 {[#]} (27... Qe7 $11) 28. Kh2 (28. h5 $1 $16) 28... Qb7 $11 29. Be4 Qb4 30. Kh3 Rdf7 31. Bd3 Qb7 32. Be4 Qb4 33. Qe2 Qc5 34. Rf3 Qb4 35. Bd3 Qb7 36. Qe4 Rb8 37. Kg3 (37. Rg3 {is more complex.} Qxe4 38. Bxe4 Ra7 39. Ra3 h5 40. Bxg6 hxg4+ 41. Kxg4 Nf5 42. Kg5) 37... Qxe4 (37... Rc7 {with more complications.} 38. Qxb7 Rbxb7 39. Be4 Rb4 40. Ra3 h5) 38. Bxe4 Rc7 39. Ra3 {[%mdl 1024] White has compensation.} Rc4 40. Bd3 Rcb4 41. Kf3 Kg8 42. Bd2 Rxb2 43. Rxa4 Rd8 44. Bb4 h5 45. Bxg6 {aiming for Bc5.} hxg4+ (45... Rb1 $1 $14) 46. Kxg4 $16 Nf5 $2 (46... Rc8 $16 47. Be1 Rf8) 47. Bxf5 $18 exf5+ 48. Kxf5 Rxc2 {[%mdl 4096] Endgame White must now prevent ...Rc4. KRR-KRB} 49. Bd6 $2 (49. Be7 Re8 50. Kg6) 49... d3 50. Rd4 d2 {[#]} 51. e6 $2 (51. Rd3 $1 $18) 51... Ra8 $2 {[%mdl 8192]} (51... Rc5+ $11 52. Kg4 Rc6) 52. Be5 Kf8 53. Bf6 (53. h5 $142 {Strongly threatening h6.} Kg8 54. Rd7) 53... Ke8 (53... Re8 $18 54. Be5 Rc6 55. Bd6+ (55. Rxd2 Rexe6 56. h5 Rb6 $16) 55... Kg7 56. Rxd2 Rb6 57. Rg2+ Kh6) 54. Kg6 Rc4 55. Rxd2 Rxf4 56. Bg5 $2 (56. Rd7 Rg4+ 57. Bg5) 56... Re4 57. Rd6 $2 ({White must play} 57. Kf5 $18 Re1 58. Rd6) 57... Re1 $2 {[%mdl 8192]} (57... Kf8 $14) 58. h5 {[%cal Bh4h5,Bh5h6][%mdl 32] White mates.} Re5 59. Bf6 Re1 60. h6 Rg1+ 61. Bg5 Rxg5+ 62. Kxg5 Ke7 63. Rb6 Ra1 64. Rb4 Ra5+ 65. Kg6 {Precision: White = 32%, Black = 38%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "6.1"]
[White "Schoppen, Casper"]
[Black "Nikolic, Predrag"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2463"]
[BlackElo "2573"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,40,0,-7,-3,-4,0,0,-8,-6,-17,-18,-18,-18,-22,-11,-16,-9,-19,-14,-14,-8,-20,0,-12,-4,-13,-13,-25,-35]} 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Bb4 {LiveBook: 26 Games} 8. Qc2 {A28: English Opening: Four Knights Variation} (8. O-O Bxc3 9. bxc3 d6 10. Nxc6 bxc6 11. Bf3 Bd7 12. c5 d5 13. c4 Rb8 14. cxd5 cxd5 15. Qd4 Re8 {1-0 (42) Rakhmanov,A (2635)-Anton Guijarro,D (2646) Havana 2018 CBM 185 [Golubev,M]}) 8... Nxd4 9. exd4 d5 10. c5 {The position is equal.} b6 11. cxb6 $146 ({Predecessor:} 11. a3 Bxc3+ 12. Qxc3 Ne4 13. Qb4 a5 14. Qb5 Ba6 15. Qc6 Bxe2 16. Kxe2 {½-½ (36) Cardoso Contreras,S-Megier,W corr 1992}) 11... axb6 12. O-O Re8 13. Bg5 Bxc3 14. bxc3 Qd6 15. Rfe1 Ne4 16. Bd3 Bf5 17. Be3 {[#] f3 is the strong threat.} Bg6 18. c4 dxc4 19. Qxc4 Nf6 20. Bxg6 hxg6 {Precision: White = 23%, Black = 100%.} 1/2-1/2

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "6.2"]
[White "Elgersma, Simon"]
[Black "Van der Werf, Mark"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2148"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,127,35,37,54,34,44,45,78,72,69,95,124,109,98,108,144,148,145,145,158,150,197,135,161,131,139,137,117,119,129,114,206,195,212,156,123,81,209,222,237,237,243,241,227,156,187,86,195,100,321,312,519,537,532,535,491,420,406,385,391,395,344,110,487,481,429,429,539,430,470,470,470,470,549,549,543,542,520,519,518,504,475,409,516,512,599,599,662,650,666,551,689,650,1164,1145,1133,1133,1066,945,932,907,859,831,12851,11745,29980,29981,29979,29982,29979,29983,29983,29984,29984,29985,29985,29986,29986,29986]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be3 O-O 6. Qd2 b6 {B08: Pirc Defence: Classical System} (6... Nc6 7. d5 Nb4 8. a3 Na6 9. Bxa6 bxa6 10. Bh6 c6 11. Bxg7 Kxg7 12. O-O Qb6 13. Rab1 cxd5 14. exd5 {0-1 (31) Giri,A (2782)-Aronian,L (2767) chess.com INT 2018}) 7. O-O-O Bb7 8. Bd3 c5 {White is slightly better.} 9. Bh6 $1 cxd4 10. Nxd4 Nc6 $146 ({Predecessor:} 10... Bxh6 11. Qxh6 Nbd7 12. h4 Ng4 13. Qf4 Ndf6 14. f3 Nf2 15. g4 e5 16. Qe3 Nxd1 17. Kxd1 d5 18. Nde2 d4 {0-1 (18) Williams,A-Schoor,H CServe email 1994}) 11. Nxc6 $1 Bxc6 12. h4 e6 {[#]} 13. h5 $1 {[%mdl 512]} Qe7 (13... Nxh5 14. Bxg7) 14. f3 Rfd8 15. g4 ({Don't do} 15. Bxg7 Kxg7 16. hxg6 fxg6 $16) 15... Bh8 16. Qg5 ({White should play} 16. Bg5 $18) 16... Rd7 $16 17. Qh4 Ne8 18. hxg6 fxg6 19. Bg5 $40 {[%mdl 128] Black is in trouble.} Bf6 20. Bxf6 Qxf6 (20... Nxf6 $16 21. Kb1 Rf8) 21. g5 $1 $18 {[%cal Rg5f6]} Qxf3 22. Rh3 Qf7 23. Bc4 b5 (23... Nc7 $16) 24. Rf1 ({Less strong is} 24. Nxb5 d5 $14) ({Weaker is} 24. Bxb5 Bxb5 25. Nxb5 Rb8 $11) 24... bxc4 25. Rxf7 Rxf7 26. e5 d5 27. Ne2 Nc7 28. Nf4 (28. Qd4 $1 $18) 28... Be8 {[#]} (28... d4 $16 {was necessary.}) 29. Kd2 (29. Ng2 $1 $18) 29... Rd8 $2 {[#]} (29... d4 $16) 30. Nxg6 $1 {[%mdl 512]} d4 $2 (30... Rg7 {might work better.}) (30... hxg6 31. Qh8#) 31. Nf4 c3+ 32. bxc3 dxc3+ 33. Ke1 Rd4 34. g6 {[%cal Rg6h7]} Re4+ 35. Kd1 {[%cal Rg6h7]} Rd7+ {[#]} 36. Rd3 $2 (36. Kc1 $1 $18 {[%cal Rg6h7] is the precise move to win.} Bxg6 37. Rxc3) 36... hxg6 $2 {[%mdl 8192]} (36... Nd5 $16 {is tougher.} 37. Qh5 hxg6 38. Nxg6 Ne3+ 39. Kc1 Rh7 40. Ne7+ {[%mdl 64] Discovered Attack} Rxe7) 37. Rxd7 Bxd7 38. Qf6 Rd4+ 39. Ke2 Be8 40. Nxe6 Nxe6 41. Qxe6+ {[%mdl 4160] Endgame Double Attack. KQ-KRB} Bf7 42. Qc8+ Kg7 43. Qxc3 Rc4 44. Qb2 {aiming for e6+.} Be6 45. Kd3 Rc7 46. c3 Rd7+ 47. Ke3 Rc7 48. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} g5 49. Qb4 Kf7 50. a5 g4 51. a6 g3 {[#]} 52. Qb7 $1 {[%mdl 512]} Rd7 (52... Rxb7 53. axb7) 53. Qf3+ {[%mdl 64] Double Attack} Ke8 54. Qxg3 Rc7 55. Kd4 Rc4+ 56. Kd3 Rg4 57. Qf3 Ra4 58. Qa8+ {[%mdl 64] Double Attack. White mates.} Kf7 59. Qxa7+ Kg6 60. Qb6 Kf5 61. a7 Bd5 62. Qb5 Be4+ 63. Ke3 Rxa7 64. e6+ {[%mdl 64] Decoy. Accuracy: White = 69%, Black = 34%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "6.3"]
[White "Van Wely, Loek"]
[Black "Slingerland, Fred"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2622"]
[BlackElo "2355"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,117,31,50,48,56,50,58,51,52,26,50,35,35,35,39,37,21,17,14,22,19,1,10,8,0,0,72,72,76,64,54,64,78,48,86,96,152,142,228,246,239,178,259,258,258,261,243,214,214,214,210,229,217,174,167,162,171,167,167,143,145,151,147,151,455,379,416,376,506,428,496,415,650,621,997,964,952,915,1227,1227,1119,1016,1227,1137,29953,29955,6538,5616,29969,29970,29969,29970,29951,5893,29965,29967,29990,29977,29977,29977]} 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. d4 cxd4 7. Nxd4 Nxd4 8. Qxd4 d6 9. O-O O-O 10. Qd3 Qc7 11. Bd2 {A39: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6 6 0-0 0-0 7 d4} (11. Bf4 Be6 12. b3 Nd7 13. Qe3 Qa5 14. Rac1 Rab8 15. Bh6 Bxh6 16. Qxh6 Nf6 17. Rfd1 Rfc8 18. Rd4 Rc5 {½-½ (70) Dizdar,G (2520)-Weiss,C (2409) Austria 2014}) 11... Bd7 12. Rac1 Rac8 $146 ({Predecessor:} 12... Bc6 13. e4 Rfc8 14. Qe2 b6 15. Nd5 Bxd5 16. exd5 Qd7 17. Rfe1 Rc7 18. b3 Rac8 {½-½ (46) Juergens,K (2102)-Kuecher,W (2123) Austria 2017}) 13. b3 {White is slightly better.} Rfe8 14. h3 Bc6 15. e4 Qb8 16. Bg5 a6 17. Rfe1 h6 18. Be3 b5 19. cxb5 axb5 20. e5 (20. Nd5 {keeps more tension.} Nxd5 21. exd5 Bd7 22. Rxc8 Qxc8 23. g4) 20... Nd7 21. Bxc6 Nxe5 {[%mdl 64] [#] Double Attack} 22. Qxb5 Nxc6 (22... Rxc6 $11 {keeps the balance.} 23. Qxb8 Rxb8) 23. Qxb8 $16 Rxb8 24. Nd5 $36 {[%mdl 2048] White has some pressure.} Nb4 25. Nxb4 Rxb4 26. Rc7 e6 27. Rec1 Rbb8 (27... h5 $142) 28. Rd7 Red8 (28... d5 $16 {was necessary.}) 29. Rxd8+ $18 Rxd8 {[%mdl 4096] Endgame KRB-KRB} 30. a4 {[%cal Ba2a4,Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Rb8 (30... Ra8 $142 31. Bd2 Kf8) 31. a5 d5 {intending ...d4.} 32. Bb6 (32. a6 $6 d4 $16) 32... Bf8 33. Ra1 Bd6 34. a6 Kf8 35. a7 Ra8 36. Rc1 Ke7 37. f4 h5 38. Rc2 Kd7 39. Kg2 f6 40. Kf3 e5 41. Ke3 Bb8 $2 (41... Ke7 $16 {is a better chance.} 42. h4 Ke6) 42. fxe5 ({Not} 42. axb8=B d4+ 43. Ke4 Rxb8 $18) (42. axb8=R exf4+ 43. Kxf4 Rxb8 $18) 42... fxe5 43. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} ({But not} 43. axb8=B d4+ 44. Ke4 Rxb8 $18) ({Don't take} 43. axb8=Q d4+ 44. Ke4 Rxb8 $18) 43... Rxa7 44. Bxa7 Bxa7+ {KR-KB} 45. Kd2 Kd6 (45... e4 $142 46. b5 g5) 46. Rc8 Bf2 47. b5 Kd7 48. Rg8 Bxg3 49. Rxg6 Bf4+ 50. Kd3 Kc7 51. Rc6+ Kb7 52. Rc5 d4 53. Rc6 h4 54. Re6 Kc7 55. Kc4 Kd7 56. Rg6 (56. Rf6 $142 Ke7 57. Rg6 e4 58. Kxd4 e3 59. Kd3 Kd8 60. Rg4 Bg3 {[#]} 61. Rxg3 $1 {[%mdl 512]} hxg3 62. Kxe3) 56... Be3 57. Rg7+ {White mates.} Kc8 58. Kd5 d3 59. Kc6 {Accuracy: White = 79%, Black = 48%.} 1-0

[Event "79th Noteboom 2019"]
[Site "Leiden"]
[Date "2019.02.24"]
[Round "6.4"]
[White "Van Vliet, Jeffrey"]
[Black "Bekker, Stefan"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2379"]
[BlackElo "2257"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,45,88,70,19,11,21,13,0,0,0,32,37,17,26,28,31,118,36,95,85,279,273,247,259,811,801,29990,29991,29998,29999]} 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bg4 5. h3 (5. O-O e6 6. h3 Bh5 7. d4 Nxe4 8. d5 Nd7 9. dxe6 fxe6 10. Nfd2 Bxe2 11. Qxe2 Nxd2 12. Nxd2 Qf6 13. Ne4 Qg6 {½-½ (111) Nisipeanu,L (2679)-Adhiban,B (2653) Wijk aan Zee 2016}) 5... Bh5 6. O-O {B50: Sicilian: 2...d6, Miscellaneous} Nc6 7. d4 cxd4 8. cxd4 d5 9. e5 Ne4 {LiveBook: 9 Games} 10. Qb3 $146 (10. e6 $14) ({Predecessor:} 10. Be3 e6 11. Nbd2 Nxd2 12. Nxd2 Bxe2 13. Qxe2 {½-½ (75) Vltavsky,V (2213)-Oresky,J (2191) Czechia 2014}) 10... Qd7 $1 $11 11. e6 Qxe6 12. Ng5 Nxg5 13. Bxh5 g6 14. Bg4 f5 15. Bxg5 fxg4 16. Nc3 $1 $36 {[%cal Rc3d5][%mdl 2048] White is more active.} (16. Qxb7 Rb8 $17) 16... O-O-O {[#]} (16... Qd7 $14) 17. Rac1 ({White should play} 17. Na4 $1 $16 {[%cal Ra4c5] Nc5 is the strong threat.} Qd6 18. Rfe1 (18. hxg4 Bg7 $11)) 17... Qf5 ({Black should try} 17... gxh3 $14 18. Nb5 Qg4) 18. Bh4 $16 Bh6 $2 {[#]} (18... Kb8 $16) 19. Nb5 $1 $18 Bxc1 20. Rxc1 {Strongly threatening Nxa7+.} Kd7 $2 {[#]} (20... a6) 21. Nd6 $1 {[%mdl 512]} Na5 (21... Kxd6 22. Qxb7) 22. Qb5+ Kxd6 23. Qc5+ {Precision: White = 64%, Black = 13%.} 1-0

