[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.07"]
[Round "1.1"]
[White "Muzychuk, Mariya"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2552"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,79,15,35,37,35,22,31,16,26,23,31,23,32,32,35,38,39,29,39,37,36,23,39,33,58,67,54,29,37,12,17,13,18,17,28,10,19,-1,12,8,8,0,8,8,10,0,0,0,6,0,7,2,7,7,7,2,8,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nc6 8. Qd2 Be6 9. O-O-O {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Qd7 ({Avoid the trap} 9... Bxa2 $2 10. b3 $18) 10. h3 h6 ({Much weaker is} 10... Bxa2 $6 11. b3 $18) 11. Kb1 {White is slightly better.} O-O-O 12. Nd4 Nxd4 13. Bxd4 Rhg8 14. Qe3 a6 15. c4 {[#]} Kb8 $146 ({Predecessor:} 15... d5 16. Be2 Qc6 17. c5 Kb8 18. b4 Bf6 19. Bxf6 gxf6 20. Bf3 Bf5 21. Rd4 Be4 22. Qxh6 {1-0 (42) Feletar,D-Demchenko,I (2147) ICCF email 2015}) 16. Qc3 g6 17. Be2 Qc6 18. h4 h5 19. b3 Bg4 20. Bxg4 hxg4 21. g3 Rde8 22. h5 gxh5 23. Rxh5 Qe4 24. Be3 Rg6 25. Re1 {[#] Black must now prevent Ba7+!} Bf6 $1 {[%cal Rf6c3] The position is equal.} 26. Qd3 Kc8 (26... Qxd3 {seems wilder.} 27. cxd3 Bd4 28. Kc2 Bxe3 29. Rxe3 Rxe3 30. fxe3 Rf6) 27. Kc1 (27. Reh1 {is more complex.} Qe6 28. c5 Be5 29. Re1 Bg7 30. Rd1) 27... Kd7 28. Kd2 Qxd3+ 29. cxd3 c5 30. Reh1 Be5 31. Rh7 Re7 32. a4 Rge6 33. R7h6 Rxh6 34. Rxh6 $11 {[%mdl 4096] Endgame KRB-KRB} f5 35. Rh5 Rf7 36. Rg5 Ke7 37. Ke2 Rf8 38. Rh5 Ke6 39. Rh6+ Ke7 40. Rh5 {Accuracy: White = 96%, Black = 97%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.07"]
[Round "1.2"]
[White "Koneru, Humpy"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2580"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,62,34,54,27,46,14,0,20,34,0,0,0,0,0,21,14,37,8,27,21,19,0,0,-29,27,23,30,27,19,58,53,56,51,50,62,62,50,44,33,15,22,17,27,0,123,117,126,117,140,141,301,426,383,308,297,284,1264,1257,1390,1359,1144,1052,1287,1197,1025,880,1156]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 e5 7. d5 Na6 8. h4 Nc5 {E73: King's Indian: Averbakh Variation without 6...c5.} 9. Qc2 (9. Bxc5 $5 dxc5 10. h5 $11) 9... c6 10. h5 (10. Bxc5 $5 dxc5 11. h5 $11) 10... cxd5 {The position is equal.} 11. cxd5 Qa5 {White must now prevent ...Ncxe4.} 12. Bd2 {[#]} Bd7 $146 ({Predecessor:} 12... Nxh5 13. a3 Qb6 14. b4 Nd7 15. Bxh5 gxh5 16. Rxh5 Nf6 17. Rh4 Ng4 18. Nh3 f5 {½-½ (33) Bluebaum,M (2643)-Markos,J (2559) Heraklion 2017}) 13. h6 Bh8 14. Nh3 Qc7 15. Ng5 Rac8 16. Qd1 a5 17. O-O Qd8 18. Rb1 Ne8 19. b3 f6 (19... Bf6 $142 20. Nf3 Be7) 20. Ne6 $11 Nxe6 21. dxe6 Bxe6 22. Bc4 Nc7 23. Nb5 Qd7 24. Nxc7 Bxc4 25. bxc4 Qxc7 26. Qb3 $36 {[%mdl 2048] White has good play.} Qxc4 27. Bxa5 Qxb3 28. Rxb3 Rf7 29. Rfb1 Rb8 (29... f5 $11) 30. Bd2 $1 $16 f5 {[#]} 31. a4 $1 {[%cal Ba2a4,Ba4a5][%mdl 32]} fxe4 {[#]} 32. a5 $1 Rbf8 $2 {This costs Black the game.} (32... Ra8 $16) 33. Rxb7 $18 Rxf2 34. Bb4 e3 {Strongly threatening ...e4.} 35. Bxd6 Re8 $2 (35... R8f4) 36. Rb8 {White is clearly winning.} Rxb8 37. Rxb8+ Kf7 38. Rxh8 Rb2 39. Kf1 Ke6 40. Bc5 Kd5 {Accuracy: White = 77%, Black = 70%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.07"]
[Round "1.3"]
[White "Lagno, Kateryna"]
[Black "Harika, Dronavalli"]
[Result "1/2-1/2"]
[ECO "B73"]
[WhiteElo "2552"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,73,8,-7,-26,-20,-12,-17,-17,-25,-20,-10,-16,-13,24,-23,-29,-22,-31,-27,37,42,33,37,50,41,49,5,20,14,15,8,15,15,15,15,15,15,15,15,16,16,16,16,16,24,13,5,8,12]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. a4 g6 9. Be2 Bg7 10. O-O O-O 11. Be3 Nc6 12. Qd2 Bd7 13. f4 {13.f3 is becoming the main line.} Rc8 14. Kh1 Re8 {[#] B73: Sicilian Dragon: Classical System without 9 Nb3.} 15. Rad1 $146 ({Predecessor:} 15. Bf3 Qc7 16. Qf2 Na5 17. Ne6 Bxe6 18. Bb6 Qb8 19. Bxa5 Nd7 20. Nd1 Rc5 21. Bb4 {1-0 (51) Garcia Rodriguez,S (1975)-Capote Robayna,J (1763) Tenerife 2011}) 15... Qa5 16. Nb3 Qb4 17. e5 Ne4 18. Nxe4 Qxe4 19. a5 Qb4 20. Bf3 Be6 21. exd6 exd6 22. Bb6 Qxd2 (22... Bxb2 $11 23. Qxd6 Qc3) 23. Nxd2 $14 d5 24. c3 Nb8 {[%cal Bc6b8,Bb8d7,Bd7f6][%mdl 32]} 25. Nb3 Nd7 26. Bf2 Nf6 27. Nc5 Bg4 28. Rfe1 Bxf3 29. gxf3 Rxe1+ 30. Rxe1 Bf8 31. b4 Bxc5 32. Bxc5 $11 {KRB-KRN} Re8 33. Rd1 Nh5 34. f5 f6 35. fxg6 hxg6 36. Bd6 Re3 37. Rxd5 {Accuracy: White = 89%, Black = 88%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.07"]
[Round "1.4"]
[White "Dzagnidze, Nana"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2515"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,-6,19,0,0,6,10,3,33,18,54,28,69,34,69,63,99,92,90,61,79,82,81,63,118,130,141,123,206,195,238,258,267,194,342,282,289,284,298,302,326,319,283,152,418,405,388,369,359,246,278,262,273,0,441,441,418,416,610,606,896,840,2631,2756,1992,1869,1525,1495,6295,6207,6079,5787,5293,5281,6402,6215]} 1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. c3 Nc6 5. Nd2 {[#]} Bg4 $146 ({Predecessor:} 5... cxd4 6. exd4 h6 7. Bxf6 gxf6 8. Ne2 e5 9. g3 h5 10. Bg2 Be6 11. h4 Qd7 {0-1 (65) Vitiugov,N (2747)-Bluebaum,M (2644) Moscow 2019}) 6. Qa4 {D00: 1 d4 d5: Unusual lines.} cxd4 7. exd4 a6 8. Ngf3 {The position is equal.} b5 9. Qc2 Qd6 10. Bd3 Rc8 11. O-O e6 12. Qb1 $36 {[%mdl 2048] White is pushing.} Nd7 13. a4 Qb8 14. axb5 axb5 15. Bxh7 Be7 16. Bxe7 Kxe7 (16... Nxe7 $14 17. Bd3 b4) 17. Bd3 $16 g5 {[#] Threatens to win with ...Bxf3.} 18. g3 $1 Rcg8 (18... Rh5 $16 {was worth a try.}) 19. Ra6 $18 Bxf3 20. Nxf3 g4 21. Nd2 (21. Rxc6 gxf3 22. Qd1 Qb7 $11) 21... Qf8 (21... Qb7 {was necessary.} 22. Qa1 b4) 22. Rd1 (22. Rxc6 Rxh2 23. Kxh2 Qh6+ 24. Kg1 Rh8 $16) 22... Ncb8 23. Ra8 Qh6 24. Nf1 b4 25. Bb5 (25. cxb4 $6 Rc8 $18) 25... Rc8 26. Qd3 (26. cxb4 $6 Nf6 $18) (26. Ra7 $18) 26... e5 $2 (26... bxc3 $16 27. bxc3 Nf6) 27. Bxd7 ({Less strong is} 27. dxe5 Nxe5 28. Qe3 Qxe3 $18) 27... Nxd7 28. Rxc8 Rxc8 29. dxe5 ({Don't take} 29. cxb4 e4 $18) 29... Nxe5 30. Qxd5 Nf3+ 31. Kg2 $2 (31. Kh1 $18 Qc6 32. Qxc6 (32. cxb4 Qxd5 33. Rxd5 Rc1 $11) 32... Rxc6 33. cxb4) 31... Qe6 $2 {[%mdl 8192]} (31... Qh3+ $1 $11 32. Kh1 Kf6 33. cxb4 Rh8 34. Qc6+ Kg7 35. Qc3+ Kg6 36. Rd6+ Kh7) 32. Qb7+ Kf6 33. Qxb4 Kg7 (33... Rc4 $142) 34. Ne3 {White is clearly winning.} Ne5 35. Rd6 Qe8 36. Nf5+ Kg8 37. Qf4 Ng6 38. Qxg4 Qe5 {[#]} 39. Nh6+ {Played: Nf5-e7} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.07"]
[Round "1.5"]
[White "Kosteniuk, Alexandra"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2504"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,101,0,0,0,5,0,0,0,7,-20,-20,-31,-33,-23,-25,-27,-24,-21,-23,-29,-21,-21,-22,-16,0,0,0,-12,0,0,0,0,0,-17,-4,-9,-10,-3,-3,-6,-6,-15,-15,-15,-16,-28,-12,-26,-6,-4,0,-2,0,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 e6 6. Be2 Nc6 7. O-O cxd4 8. cxd4 Be7 9. Nc3 Qd6 10. Nb5 Qd8 11. Bf4 Nd5 12. Bg3 O-O 13. Rc1 {B22: Sicilian: 2 c3.} Bd7 14. Nd6 {[#]} Bxd6 $146 ({Predecessor:} 14... Na5 15. b4 Nxb4 16. Nxf7 Rxf7 17. Bc7 Qe8 18. Bxa5 {½-½ (76) Alekseev,E (2673)-Bukavshin,I (2607) Vladivostok 2014}) 15. Bxd6 Nce7 16. Qd2 a6 17. Ba3 Bb5 18. Bxb5 axb5 19. Ne5 Ra4 20. Qd1 Qe8 {Threatens to win with ...b4.} 21. Bc5 b6 ({Of course not} 21... Rxa2 22. Ba3 $14) 22. Bxe7 Qxe7 23. a3 Rfa8 24. Nc6 Qd6 25. Qf3 Rc4 26. Ne5 $1 Rc7 27. Rc6 Qe7 ({Reject} 27... Rxc6 $6 28. Qxf7+ Kh8 {[#]} 29. Qb7 $1 $16 {[%mdl 512]}) 28. Qe2 b4 29. axb4 Qxb4 30. Rxc7 Nxc7 31. Qf3 Rf8 32. Nc6 Qd6 33. Rc1 Nd5 34. Rc4 f6 (34... Ra8 {seems wilder.} 35. g3 g6 36. Ne5 Qe7 37. Kg2 Kg7) 35. b4 Ra8 {[#] ( -> ...Ra1+)} 36. g3 $1 {The position is equal.} Ra6 {White must now prevent ...b5.} 37. Ne5 {Strongly threatening Rc8+.} Ra8 38. Nc6 h6 39. Rc1 Kh8 40. Qe4 Rc8 41. b5 Ra8 42. Kg2 Kg8 43. h4 Kh8 44. Rc2 Qd7 45. Kh2 Qd6 46. Qg6 Nc7 47. Qf7 Rf8 48. Qh5 Ra8 49. Qf7 Rf8 50. Qh5 Ra8 51. Qf7 {Accuracy: White = 97%, Black = 100%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.08"]
[Round "2.1"]
[White "Muzychuk, Mariya"]
[Black "Koneru, Humpy"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2552"]
[BlackElo "2580"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:08]} 2. Nf3 {[%emt 0:00:20]} Nf6 {[%emt 0:00:11]} 3. d4 {[%emt 0:00:32]} Nxe4 {[%emt 0:00:13]} 4. Bd3 {[%emt 0:00:05]} d5 {[%emt 0:00:24]} 5. Nxe5 {[%emt 0:00:14]} Nd7 {[%emt 0:00:37][%cal Bb8d7,Bd7c5,Bc5d3][%mdl 32]} 6. Nc3 {[%emt 0:00:28]} Nxc3 {[%emt 0:00:47]} 7. bxc3 {[%emt 0:00:07]} Bd6 {[%emt 0:00:27]} 8. O-O {[%emt 0:08:06]} O-O {[%emt 0:00:16]} 9. Re1 {[%emt 0:10:27]} Bxe5 {[%emt 0:01:47] C43: Petroff Defence: 3 d4.} 10. dxe5 {[%emt 0:00:15] Qh5 is the strong threat.} Nc5 {[%emt 0:00:34]} 11. Rb1 $5 {[%emt 0:09:35][%mdl 4] Exploring less charted territory.} (11. Be3 {feels hotter.} Nxd3 12. cxd3 Qd7 13. d4 b6 14. Qc2) 11... Nxd3 {[%emt 0:09:26] The position is equal.} 12. cxd3 {[%emt 0:00:28]} b6 {[%emt 0:00:08]} 13. Rb4 {[%emt 0:00:56] [#]} Bf5 $146 {[%emt 0:11:06]} ({Predecessor:} 13... f5 14. exf6 Qxf6 15. Rf4 Bf5 16. Bd2 Qd6 17. Qf3 Bd7 18. Qh5 c6 19. Re5 Rxf4 20. Bxf4 {½-½ (80) Sokolov,A (2604)-Schandorff,L (2551) Germany 2001}) 14. Qf3 {[%emt 0:05:08]} c5 {[%emt 0:17:06]} 15. Rf4 {[%emt 0:03:11]} Bg6 {[%emt 0:01:02]} 16. h4 {[%emt 0:10:35]} h5 {[%emt 0:07:47]} 17. g4 {[%emt 0:04:37]} Qxh4 {[%emt 0:07:53]} 18. Qg2 {[%emt 0:10:06]} Qe7 {[%emt 0:16:00]} 19. gxh5 {[%emt 0:01:19]} Bxh5 {[%emt 0:00:16]} 20. Re3 {[%emt 0:06:05]} Rfe8 {[%emt 0:00:46]} 21. Qh2 {[%emt 0:13:25]} g6 {[%emt 0:10:59]} 22. Rf5 {[%emt 0:05:44]} Bg4 {[%emt 0:05:50]} 23. Rf4 {[%emt 0:00:58]} Bh5 {[%emt 0:01:04]} 24. e6 {[%emt 0:05:52]} fxe6 {[%emt 0:03:34]} 25. Rg3 {[%emt 0:00:04]} Kh7 {[%emt 0:02:33]} 26. Rh4 {[%emt 0:00:38]} Qf7 {[%emt 0:00:14]} 27. Rg5 {[%emt 0:00:56]} Rg8 {[%emt 0:00:43]} 28. Kf1 {[%emt 0:00:22]} Qf3 {[%emt 0:01:07]} 29. Rhxh5+ {[%emt 0:00:39]} gxh5 {[%emt 0:00:05]} 30. Qc7+ {[%emt 0:00:52]} Kh8 {[%emt 0:00:10]} 31. Qe5+ {[%emt 0:00:14]} Kh7 {[%emt 0:00:05]} 32. Rxh5+ {[%emt 0:00:37]} Kg6 {[%emt 0:00:06]} 33. Qg5+ {[%emt 0:00:39]} Kf7 {[%emt 0:00:17]} 34. Rh7+ {[%emt 0:00:05]} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.08"]
[Round "2.2"]
[White "Harika, Dronavalli"]
[Black "Dzagnidze, Nana"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2518"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,23,17,4,18,14,8,5,11,7,27,34,41,45,30,39,44,0,10,1,1,4,7,1,2,2,16,0,0,0,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. Nbd2 {E04: Open Catalan: 5 Nf3.} Nxd4 8. Nxc4 Nxf3+ 9. Bxf3 Qxd1 10. Rxd1 Nd5 11. e4 Nb6 12. Nxb6 cxb6 13. e5 Bc5 {[#]} 14. Be3 $146 (14. Bg5 {with more complications.} Bd7 15. Bxb7 Ra7 16. Bc6 h6 17. Bh4) ({Predecessor:} 14. Bg5 f6 15. exf6 gxf6 16. Bh6 Ke7 17. Rac1 Rd8 18. Rxd8 Kxd8 {½-½ (50) Kovalenko,I (2646)-Kveinys,A (2491) Riga 2013}) 14... Bxe3 {The position is equal.} 15. fxe3 Bd7 16. Rd6 Bc6 17. Bxc6+ bxc6 $11 {[%mdl 4096] Endgame KRR-KRR} 18. Rc1 O-O 19. Rcxc6 b5 20. Rxa6 g5 21. Rxa8 (21. h3 {is more complex.} Rac8 22. Rdc6 Rcd8 23. Rab6 Rd5 24. Rb7) 21... Rxa8 {KR-KR} 22. Rb6 Rxa2 23. Rxb5 g4 24. Rb4 h5 25. h3 gxh3 26. Kh2 Ra5 27. Re4 Ra2 28. Rb4 Ra5 29. Re4 Ra2 30. Rb4 Ra5 31. Re4 {Accuracy: White = 95%, Black = 100%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.08"]
[Round "2.3"]
[White "Ju, Wenjun"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "D28"]
[WhiteElo "2583"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,147,15,7,8,0,10,-18,0,0,0,-10,0,-8,0,-29,-15,-49,-37,-80,-89,-195,-30,-22,-12,-14,-21,-12,-9,-11,0,0,0,0,0,0,0,0,1,1,12,8,8,8,9,0,0,0,0,0,4,1,1,0,0,0,0,0,0,0,1,1,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,11,8,8,8,14,8,15,8,10,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,0,15,0,15,0]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. Nc3 a6 8. Qe2 b5 9. Bb3 Bb7 10. Rd1 Be7 $1 {[%mdl 4] is recently more successful than 10...Qc7. D28: Queen's Gambit Accepted: Classical main line: 7 Qe2 with early ...Nc6.} 11. d5 exd5 12. Bxd5 {[#]} Qc8 $146 ({Predecessor:} 12... Nxd5 13. Nxd5 O-O 14. b4 Bf6 15. Nxf6+ Qxf6 16. Bb2 Qe7 17. bxc5 Qxc5 18. Rac1 Qe7 {½-½ (24) Bareev,E-Dlugy,M (2450) Belfort 1983}) 13. e4 O-O 14. Be3 Re8 15. Rac1 c4 16. a4 Nb4 17. axb5 axb5 18. Nxb5 Nfxd5 19. Rxc4 {[#]} (19. exd5 $17 Bxd5 20. Nc3) 19... Qb8 $2 (19... Bc6 $1 $19 {[%cal Rc6b5]} 20. Rxc6 Qxc6) 20. exd5 $11 Nxd5 {The position is equal.} 21. Nc3 Nxe3 22. Qxe3 Bf6 23. Qf4 Bxf3 24. Qxf3 Qxb2 25. Nd5 {Nc7 is the strong threat.} Ra1 {[#] ( -> ...Re1+)} 26. g3 Rxd1+ 27. Qxd1 h6 28. Qf3 Qe5 29. Rf4 {[%cal Rd5f6]} Re6 30. Kg2 Rd6 31. Ne3 {Threatens to win with Nc4.} Qe6 32. Nf5 {Black must now prevent Re4.} Ra6 33. h4 Kh8 34. h5 Kg8 35. Re4 (35. Rg4 {keeps more tension.} Kh8 36. Rb4 Ra5 37. Ne3 Bg5 38. Nc4) 35... Qc6 36. Re1 Qxf3+ 37. Kxf3 {[%mdl 4096] Endgame KRB-KRN} Ra8 38. Rb1 Bg5 39. Rb6 Rd8 40. Kg4 Bd2 41. f4 Bc3 42. Kf3 Kh7 43. Rb7 Kg8 44. Ra7 Bb2 45. Rc7 Bf6 46. Ke4 Kf8 47. Rc6 Be7 48. Ne3 Ba3 49. Rc7 Re8+ 50. Kf3 Rd8 51. Nc4 Bd6 52. Rb7 Kg8 53. Ke4 Kf8 54. Nb6 Ke8 55. g4 Rb8 56. Nc4 Rd8 $1 ({But not} 56... Bxf4 $2 57. Kxf4 Rd8 58. Ke5 $18) 57. f5 Kf8 58. Ne3 Be7 59. Nd5 Bg5 60. Nb6 Ke8 61. Rc7 Bf6 62. Rc8 (62. Nd5 {seems wilder.} Bh4 63. Rc1 Kd7 64. Ra1 Kd6 65. Ra6+) 62... Rxc8 63. Nxc8 {KB-KN} Bb2 64. Kd5 f6 65. Ke6 Kf8 66. Kd7 Ba3 67. Nb6 Bc5 68. Nd5 Ba3 69. Nf4 Kf7 70. Ne6 Bb2 71. Nd8+ $1 Kf8 72. Ne6+ Kf7 73. Nd8+ Kf8 74. Ne6+ {Accuracy: White = 92%, Black = 96%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.08"]
[Round "2.4"]
[White "Gunina, Valentina"]
[Black "Kosteniuk, Alexandra"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2461"]
[BlackElo "2504"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,80,27,8,7,5,29,18,45,15,101,65,97,60,83,54,150,178,177,168,157,153,175,172,156,65,68,56,58,60,108,93,73,0,0,0,0,0,0,0,44,37,11,8,44,0,0,-9,0,-8,0,0,0,0,0,-8,-8,-522,-547,-470,-451,-1062,-1134,-375,0,-546,-524,-29948,-29944,-29966,-29967,-29978,-29979]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4 Bg4 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 7. Be3 Nd7 8. h3 Bh5 {The position is equal.} 9. Nc3 {[#]} Qb8 $146 (9... Bxf3 $11 {remains equal.} 10. Qxf3 Be7) ({Predecessor:} 9... Be7 10. g4 Bg6 11. Qe2 h5 12. O-O-O b5 13. cxb5 axb5 14. Bxb5 Nb4 15. a3 c6 16. axb4 cxb5 {0-1 (34) Pirttimaki,T-Johnston,G Valetta 1980}) 10. Nd5 Qc8 11. g4 Bg6 12. Nh4 Nd8 ({Black should play} 12... Rb8 $14) 13. Bb6 $16 Ne6 {[#]} 14. Bxc7 $1 b5 15. cxb5 axb5 16. Bxb5 Nxc7 17. Rc1 (17. Nb6 $16 Nxb5 18. Nxc8 Rxc8 19. Rc1) 17... Nxb5 $14 18. Rxc8+ Rxc8 19. Qa4 ({Much worse is} 19. Nxg6 hxg6 20. Qa4 Nd4 $15) 19... Rb8 20. O-O Be7 21. Nxg6 (21. Nf3 $16) 21... hxg6 $11 22. Rc1 {Black must now prevent Nc7+.} Bd8 23. Qa6 O-O {[#] And now ...Nc5 would win.} 24. b4 $1 Nf6 25. Rc8 Rxc8 26. Qxc8 Nxd5 27. exd5 Nd4 28. a4 f5 {...Bh4 is the strong threat.} 29. g5 $1 e4 30. dxe4 Bxg5 31. Qc4 Nf3+ $1 32. Kg2 Ne5 33. Qc2 $2 {[%mdl 8192]} (33. Qa6 $11 {and White has nothing to worry.} fxe4 34. Qxd6) 33... fxe4 $19 34. Qxe4 Rf4 35. Qe1 (35. Qe3 $142 Rg4+ 36. hxg4 Bxe3 37. fxe3) 35... Bh4 36. b5 Nd3 $2 (36... Rxf2+ $19 37. Qxf2 Bxf2 38. Kxf2 Kf7) 37. Qe8+ $2 {[%mdl 8192]} (37. Qe3 $11 {and White stays safe.} Rxf2+ 38. Kh1) 37... Kh7 38. f3 Rxa4 {Black mates.} 39. f4 Ra2+ 40. Kf3 Ne1+ {Accuracy: White = 56%, Black = 69%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.08"]
[Round "2.5"]
[White "Yip, Carissa"]
[Black "Lagno, Kateryna"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2412"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,62,0,0,0,10,12,12,4,12,0,10,0,3,2,1,0,0,0,0,6,15,0,0,0,0,0,5,-11,-14,-38,-36,-44,-38,-79,-96,-283,-289,-630,-570,-1197,-1042,-29996,-29993,-29997,-29991,-29994,-29992]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. exd5 cxd5 8. O-O Be7 9. c4 O-O 10. cxd5 {C45: Scotch Game.} Bb7 11. Nc3 Nxd5 12. Bd2 {[#] The position is equal.} Qd7 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 12... Nxc3 13. Bxc3 Bf6 14. Bxf6 Qxf6 15. Qc2 g6 16. Qxc7 Qxb2 17. Rab1 Qd4 18. Rfd1 Bd5 19. Bxg6 {1-0 (28) Xiong,J (2712)-Sethuraman,S (2634) Saint Louis 2019}) 13. Qe2 Rfe8 14. Rfd1 Bd6 15. Qh5 Nf6 16. Qb5 Bc6 17. Qf5 Qxf5 18. Bxf5 Rab8 19. b3 Rbd8 20. Be1 g6 21. Bc2 a5 22. Rd3 Nh5 {next ...Nf4 is good for Black.} 23. g3 Nf6 24. Rad1 Ng4 {[#] Strongly threatening ...Ne5.} 25. Nd5 Re2 $36 {[%mdl 2048] ...Rde8 is the strong threat. Keeping White busy.} 26. Bb1 $2 (26. h3 $17) 26... Rde8 $19 27. Bxa5 $2 (27. Ne3) 27... Bc5 28. h3 Bxf2+ 29. Kf1 Nh2+ {Black mates.} 30. Kg2 Be3+ 31. Kh1 Nf3 {Accuracy: White = 48%, Black = 100%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.09"]
[Round "3.1"]
[White "Lagno, Kateryna"]
[Black "Muzychuk, Mariya"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2552"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,60,24,9,37,18,45,33,27,29,21,33,43,54,45,60,68,53,68,62,42,48,122,117,116,53,95,65,66,65,45,60,65,70,104,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Re1 Bf5 10. Qb3 Nd7 {Recently 10...Qd7 got a lot of attention. C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} (10... Na6 {with more complications.} 11. cxd5 cxd5 12. Nc3 Nb4 13. Bxe4 dxe4 14. Bg5 Qb6) 11. cxd5 Ndc5 12. dxc5 Nxc5 {[%mdl 64] [#] Double Attack. White is slightly better.} 13. Bxf5 Nxb3 14. axb3 cxd5 15. Nc3 Qb6 16. Be3 $36 {[%mdl 2048] White is pushing.} Qxb3 17. Nd4 Qc4 {[#]} 18. Ra4 $146 {[%mdl 1024] White has compensation.} ({Predecessor:} 18. Bc2 Qc7 19. g3 Bc5 20. Red1 Rad8 21. Bb3 Rfe8 22. Rac1 Rc8 23. Bxd5 a6 24. Bf3 {½-½ (59) Travers,M-Dubois,Y ICCF email 2010}) 18... Qc7 $1 19. g3 Qd8 ({Black should try} 19... Bc5 $14) 20. Rd1 $16 ({Don't play} 20. Nxd5 $6 Bxg3 21. hxg3 Qxd5 $11) 20... Re8 21. Nf3 ({Resist} 21. Nxd5 Bc5 $14) ({Better is} 21. Ndb5 $16 Be5 22. Nxd5 (22. Rxd5 Qf6 $16)) 21... Qf6 22. Rxd5 {And now Bg5 would win.} Be5 $1 {[%cal Re5c3]} 23. Nxe5 Qxf5 24. Rf4 Qc2 25. Nxf7 Qxb2 {[#]} 26. Nh6+ (26. Bd4 $1 $16 Qc1+ 27. Kg2 Qxf4 {[%mdl 64] Remove Defender} 28. gxf4 Kxf7 29. Nb5) 26... gxh6 $11 {The position is equal.} 27. Rg4+ {[%mdl 64] Discovered Attack} Kf7 28. Rf4+ Kg8 29. Rg4+ {[%mdl 64] Discovered Attack} Kf7 30. Rf4+ Kg8 {Accuracy: White = 78%, Black = 78%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.09"]
[Round "3.2"]
[White "Kosteniuk, Alexandra"]
[Black "Harika, Dronavalli"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2504"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,92,14,7,23,22,25,11,16,8,8,2,10,8,18,15,27,22,28,8,10,-15,-10,-13,0,0,10,-30,-10,-33,0,-60,0,-37,-37,-89,-89,-155,-141,-139,-126,-209,-211,-204,-157,-146,-129,-176,-164,-201,-218,-225,-216,-343,-348,-582,-563,-606,-604,-824,-662,-29979,-29979,-29989,-29990,-29990,-29983,-29979,-29981,-29982,-820,-6195,-5277,-29981,-29982,-29981,-29981,-29983,-29982]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 O-O 8. Nc3 d6 9. a3 Na5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 10. Ba2 Be6 11. b4 Bxa2 {The position is equal.} 12. Nxa2 Nc6 13. Re1 Qd7 14. c4 {[#]} Rab8 $146 ({Predecessor:} 14... Rfe8 15. h3 g6 16. Be3 bxc4 17. dxc4 Nxe4 18. Bh6 Nf6 19. b5 axb5 20. cxb5 Nd8 {0-1 (68) Myers,D (2011)-Bereolos,P (2180) Greensboro 2017}) 15. Nc3 Nd4 16. Nxd4 exd4 17. Ne2 c5 18. bxc5 dxc5 {With the idea ...bxc4.} 19. Nf4 Ne8 20. Bd2 Bg5 21. Qh5 h6 22. Rec1 Rc8 23. g3 (23. Qd1 $11) 23... Rc6 (23... bxc4 $15 24. Rxc4 Nf6) 24. Rab1 bxc4 25. dxc4 (25. Rxc4 $15 Nd6 26. Rc2) 25... Nf6 $17 26. Qf3 ({Better is} 26. Qe2) 26... Re8 27. Re1 Ng4 28. Rb3 (28. Kg2 $17) 28... Rcc8 {Played: Ng4-e5} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.09"]
[Round "3.3"]
[White "Dzagnidze, Nana"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2515"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,89,50,43,36,40,39,32,53,17,35,23,72,66,53,57,103,97,92,96,86,86,89,99,98,100,262,261,301,300,308,279,282,275,287,280,366,74,243,107,360,78,93,87,195,191,176,188,183,179,182,142,174,152,156,155,155,101,103,95,126,125,127,95,142,113,102,105,156,153,165,73,205,202,243,185,331,322,469,460,439,372]} 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 e6 5. O-O Ne7 6. Bb3 O-O {B06: Modern Defence.} 7. c3 Nd7 8. Bf4 h6 {[#] White is slightly better.} 9. h4 $146 ({Predecessor:} 9. Nbd2 b6 10. Qe2 Nf6 11. h3 a5 12. Rad1 a4 13. Bc4 Bb7 14. Bd3 d5 15. e5 {1-0 (41) Andreasen,P (2252)-Pedersen,B (2102) Aalborg 2014}) 9... Nf6 10. Nbd2 Nc6 11. e5 dxe5 12. dxe5 Nd7 {[%cal Rd7e5]} 13. Qe2 $1 b6 14. Rad1 Qe7 15. Bc2 a5 16. Rfe1 Ba6 17. Qe3 h5 $2 (17... Qc5 $16) 18. Bg5 $1 $18 {[%cal Rg5e7]} Qc5 19. Qf4 $1 {Threatens to win with Ne4.} Ncxe5 ({Reject} 19... Ndxe5 $6 20. Ne4 $18) 20. Ne4 Qc6 21. Nxe5 Bxe5 22. Qd2 Bc8 23. Ng3 $2 (23. Bh6 $18) 23... Rb8 $2 {[#]} (23... f5 $16) 24. Bh6 (24. Nxh5 $1 $18 {[%mdl 512] has better winning chances.} Qc5 (24... gxh5 25. Bh6) 25. Bh6) 24... Bf6 $2 {[%mdl 8192] [#]} (24... Bxg3 $16 25. Bxf8 (25. fxg3 Re8 $14) 25... Bxh4) 25. Bxf8 $2 (25. Nxh5 $1 $18 {[%mdl 512]} Bh8 (25... gxh5 26. Qd3) 26. Nf4) 25... Nxf8 $16 26. Ne4 Bxh4 (26... Be7 $16 {was necessary.}) 27. Qf4 $18 Be7 {[#]} 28. Nf6+ $1 Bxf6 29. Qxf6 {Bxg6! is the strong threat.} Ba6 30. Re3 {[%mdl 1024] White has strong compensation.} Bc4 31. Be4 ({Don't do} 31. Rf3 Qe8 $16) 31... Qe8 32. b3 Ba6 33. Rh3 ({White should try} 33. Bf3) 33... Nh7 $16 34. Qh4 Be2 35. Rd2 Bg4 36. Rhd3 $36 {[%mdl 2048] Strongly threatening Rd8. White is on the roll.} Kg7 37. Rd8 Rxd8 38. Qxd8 Qxd8 ({Better is} 38... Qb5) 39. Rxd8 {[%mdl 4096] Endgame KRB-KBN} e5 40. Re8 (40. b4 $18 {and White stays clearly on top.}) 40... Be6 {[#]} (40... Kf6 $16 {was worth a try.}) 41. Re7 $1 $18 c5 42. c4 Ng5 (42... Nf6 $142) 43. Bd5 Bf5 (43... e4 {might work better.} 44. Rb7 Bxd5 45. cxd5 Kf6 46. Rxb6+ Ke5) 44. Rb7 Bb1 45. a3 {Accuracy: White = 64%, Black = 45%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.09"]
[Round "3.4"]
[White "Koneru, Humpy"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2580"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,43,10,2,17,8,18,18,0,0,-8,0,0,8,13,14,0,8,14,16,23,31,16,21,25,25,25,25,-10,-20,-26,30,0,0,-13,17,0]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 Nf6 5. d4 Nxd5 6. dxc5 {A21: English Opening: 1...e5 2 Nc3.} Nf6 7. b4 O-O 8. Bb2 d6 {[#]} 9. cxd6 $146 ({Predecessor:} 9. Nf3 e4 10. Bxf6 Qxf6 11. Nd4 dxc5 12. bxc5 Rd8 13. Qc1 Nc6 14. Nxc6 bxc6 15. Rb1 Bg4 16. Be2 Bxe2 17. Kxe2 Qg5 {0-1 (17) Cox,R (1778)-Beveridge,C (2163) ICCF email 2018}) 9... cxd6 10. Nf3 Be6 11. Be2 Qb6 12. a3 a5 13. O-O Na6 14. Bc3 axb4 15. axb4 Ne4 16. Be1 Rfc8 17. Rc1 h6 18. Nd2 Nf6 19. Nf3 Ne4 (19... Qc7 $142) 20. Nd2 Nf6 21. Nf3 Ne4 22. Nd2 {Accuracy: White = 87%, Black = 86%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.09"]
[Round "3.5"]
[White "Krush, Irina"]
[Black "Gunina, Valentina"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2422"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,104,17,34,20,33,25,51,52,41,11,33,-17,13,-11,-10,-32,0,0,68,0,36,34,67,61,49,58,112,117,111,66,48,45,45,37,55,55,81,97,81,87,130,35,37,0,0,-71,0,0,12,-46,-49,-87,-41,-85,-86,-143,-156,-253,-259,-279,-283,-275,-270,-259,-265,-260,-254,-250,-240,-241,-246,-316,-325,-325,-325,-326,-320,-403,-383,-414,-404,-528,-527,-519,-521,-525,-533,-552,-535,-612,-529,-521,-513]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 Qe8 {6...d5 is becoming the main line.} 7. g3 d6 8. Bg2 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} a5 9. b3 Ra7 {[#]} 10. e4 $146 {White is slightly better.} ({Predecessor:} 10. Bg5 Nbd7 11. e4 e5 12. Ne2 exd4 13. Qxd4 Ra6 14. Nc3 h6 15. Bxf6 Nxf6 16. O-O {1-0 (38) Navara,D (2710)-Harika,D (2514) Caleta 2013}) 10... e5 11. d5 b5 12. Be3 Rb7 13. Ne2 (13. c5 $5 {[%cal Rc5c6]} Ng4 14. c6 Nxe3 15. Qxe3 $14 (15. cxb7 Nxg2+ 16. Kf1 Bxb7 $11)) 13... bxc4 14. bxc4 Qa4 15. O-O c6 (15... Ng4 $11) 16. dxc6 (16. Rfc1 $14) 16... Nxc6 17. Rfd1 Bg4 18. f3 Be6 19. Rxd6 Rb3 (19... Rc8 $14) 20. Qc2 $16 Rc8 21. Bf1 {Black must now prevent Nc3.} Qxc4 22. Qxc4 Bxc4 23. Kf2 h6 24. Rc1 Ne7 25. Bh3 Rc7 26. Rc2 Kh7 {[#]} 27. a4 (27. Nc1 $1 $16 {[%cal Rc1b3]} Rbb7 28. Rb6) 27... Rb4 $1 $14 28. Bf1 Rc8 29. Bh3 {[#]} (29. Bd2 $11 {keeps the balance.} Rxa4 30. Rc3) 29... Rc6 (29... Be6 $1 $17 30. Rxe6 {[%mdl 64] Remove Defender} fxe6) 30. Rxc6 $11 Nxc6 31. Bc5 (31. Nc3 $11) 31... Rxa4 $15 32. Bf1 {aiming for Nc3.} Bd3 33. Rd2 Rc4 $36 {[%mdl 2048] Black is really pushing.} 34. Ba3 {[#]} ({White should try} 34. Be7) 34... Bxe4 $1 $17 {[%mdl 512]} 35. Ra2 (35. Bb2 $17 Rb4 36. Nc3) (35. fxe4 Nxe4+) 35... Bd3 $19 36. Ke3 e4 37. fxe4 Ne5 ({Worse is} 37... Nxe4 38. Kxd3 Ne5+ 39. Ke3 $11) 38. h3 Rxe4+ 39. Kf2 Bc4 40. Ra1 Nd3+ 41. Kg1 Re3 42. Bd6 Ne4 43. Bc7 Nd2 44. Nd4 Nxf1 45. Kxf1 Re4 46. Bb6 {[#]} a4 $1 {[%cal Ba5a4,Ba4a3][%mdl 32]} 47. Kg2 (47. Rxa4 Re1+) 47... Bd5 {And now ...Re1+ would win.Black is clearly winning.} 48. Kf1 {[#]} a3 $1 49. Ne2 (49. Rxa3 Re1#) 49... Rb4 50. Ba5 Rb2 51. Bc3 Rc2 {Hoping for ...a2.} 52. Rxa3 {Now Nf4 and White clings on.} Bf3 {Accuracy: White = 59%, Black = 68%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.10"]
[Round "4.1"]
[White "Muzychuk, Mariya"]
[Black "Dzagnidze, Nana"]
[Result "1/2-1/2"]
[ECO "B65"]
[WhiteElo "2552"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,95,18,0,3,25,21,22,46,20,25,27,20,11,10,11,14,19,16,31,20,23,13,15,-5,20,17,18,19,17,22,23,23,25,17,40,33,33,41,32,34,36,19,21,21,22,8,10,8,8,8,8,8,12,8,12,14,16,13,13,13,13,8,34,23,23,23,23,23,23,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 O-O 10. f4 h6 11. Bh4 Qa5 12. Be1 {Strongly threatening Nd5. B65: Sicilian: Richter-Rauzer: 7...Be7 8 0-0-0 0-0 9 f4 Nxd4.} e5 13. Qd3 {[#]} exf4 $146 ({Predecessor:} 13... Qc5 14. f5 Bd7 15. Bh4 Bc6 16. Be2 Rfd8 17. Kb1 Rac8 18. Bxf6 Bxf6 19. Bf3 b5 {0-1 (38) Rivera,D-Hybl,J ICCF corr 1965}) 14. Nd5 Qd8 15. Nxf4 Bd7 16. Be2 Bc6 17. Bf3 Nd7 18. Nd5 Nc5 19. Qd4 Bxd5 20. Qxd5 Rc8 21. Bc3 Qc7 22. e5 {[%cal Re5d6]} (22. Bg4 {is interesting.} Bg5+ 23. Kb1 Rce8 24. Bf5 Bf4 25. Bd4) 22... Na4 {[#] aiming for ...Nxb2!} (22... Bg5+ {seems wilder.} 23. Kb1 Na4 24. exd6 Nxc3+ 25. bxc3 Qxc3 26. Qb3 Qa5) 23. exd6 Nxc3 24. dxc7 Nxd5 25. Rxd5 Rxc7 26. Rhd1 b6 27. c3 a5 28. Rd7 Bg5+ 29. Kc2 Rxd7 30. Rxd7 $14 {[%mdl 4096] Endgame KRB-KRB} Rd8 31. Rb7 Rd2+ 32. Kb3 Be3 33. Ka3 g5 34. h3 f5 35. b4 axb4+ 36. cxb4 h5 37. Re7 Rd3+ 38. Ka4 g4 $1 {[%cal Rg4f3]} 39. hxg4 hxg4 40. Be2 Rc3 41. Re5 Bg1 42. Rxf5 Rc2 43. Re5 Rxa2+ 44. Kb3 Rd2 45. Re4 g3 {The position is equal.} 46. Kc3 Rd7 47. Bc4+ Kf8 48. Rf4+ {Accuracy: White = 100%, Black = 94%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.10"]
[Round "4.2"]
[White "Koneru, Humpy"]
[Black "Lagno, Kateryna"]
[Result "1/2-1/2"]
[ECO "D75"]
[WhiteElo "2580"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,60,10,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-2,-2,-2,-2,0,0,0,-7,-6,-8,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 Nxc3 7. bxc3 c5 8. Nf3 Nc6 9. O-O cxd4 10. Nxd4 Nxd4 11. cxd4 Qxd4 12. Rb1 O-O {The position is equal.} 13. Qxd4 {D75: Fianchetto Grünfeld: Main Line with 7...c5.} Bxd4 14. Bh6 Rd8 15. Bxb7 Rb8 16. Bxc8 Rdxc8 17. Rxb8 Rxb8 $11 {[%mdl 4096] Endgame KRB-KRB} 18. Rd1 Bc5 19. Rd7 a5 20. Rc7 {[#]} Bb4 $146 ({Predecessor:} 20... Bd6 21. Ra7 Bb4 22. Bf4 Rc8 23. a3 Bxa3 24. Rxa5 Bc5 25. Rb5 f6 26. Kg2 Kf7 27. g4 Rc6 28. Kf3 h5 29. gxh5 gxh5 30. Rb7 Kg6 31. Rc7 Rxc7 {½-½ (31) Stephan,J (2546)-Giuliani,S (2630) ICCF email 2009}) 21. Ra7 f6 22. a3 Bxa3 23. Rxa5 Bb4 24. Ra6 g5 25. h4 gxh4 26. gxh4 Kf7 27. Kg2 Bd6 28. Ra4 Kg6 29. Bf4 Bxf4 30. Rxf4 h5 {Accuracy: White = 100%, Black = 100%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.10"]
[Round "4.3"]
[White "Ju, Wenjun"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2583"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,117,39,65,55,53,62,58,62,64,29,63,14,16,15,60,49,51,9,22,0,0,0,0,-28,-15,-37,-37,-43,-16,-43,0,0,0,-57,-54,-92,-29,-29,-35,-28,-29,-36,-35,-77,-12,-50,-40,-48,-14,-20,0,0,0,0,0,0,27,30,108,115,181,178,175,180,440,232,775,400,400,400,1110,1092,2208,1838,1947,1894,1906,1775,1414,807,743,0,1392,1385,1324,1302,1460,1338,1383,1155,6837,6821,6797,6733,29962,29962,29960,29960,12631,6095,945,945,29987,29988,29988,29989,29989,29990,29990,29991]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 g6 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann.} exd4 7. cxd4 Bg7 8. d5 {White is slightly better.} Na5 9. O-O (9. Bd2 $5 {[%cal Rd2a5]} c5 10. Bc3 $14) 9... b5 10. Bb3 d6 11. Bd2 c5 12. dxc6 Nxb3 {[#]} 13. Qxb3 $146 (13. axb3 $5 {[%cal Rd2a5]} Nxc6 14. Bg5 $14) ({Predecessor:} 13. axb3 Nxc6 14. Bg5 Qd7 15. Nc3 Ne7 16. Bf4 O-O 17. Qxd6 Qb7 18. Bg5 f6 19. Be3 {1-0 (43) Mamedov,N (2580)-Abdulov,O (2334) Baku 2011}) 13... Nxc6 14. Bc3 Be6 15. Qd1 Ne5 16. Nbd2 O-O 17. Nd4 Bg4 18. Qb3 Rb8 19. a3 Qb6 20. h3 Bd7 21. N2f3 (21. Ne2 $11) 21... a5 $15 22. Rfd1 b4 (22... Rfc8 $17 {...Nxf3+ is the strong threat.} 23. Rdc1 Rc4) 23. axb4 $11 axb4 24. Bd2 Qb7 25. Nxe5 dxe5 26. Nc2 Rfc8 ({Black should try} 26... Qxe4 $17 {White must now prevent ...Be6.} 27. Nxb4 Bc6) 27. Be1 Be6 28. Qd3 Bc4 29. Qf3 Qb5 {Threatens to win with ...Be2.} 30. Rd2 Bh6 31. Ne3 Be6 32. Rdd1 Bg5 33. Nd5 Rc2 {[#]} (33... Qc4 $11) 34. Qg3 $1 $16 {[%cal Rg3g5]} Bf4 (34... f6 $16 {was called for.}) 35. Nxf4 $18 exf4 36. Qxf4 Rxb2 $2 (36... Rcc8 {might work better.} 37. Rd4 Qc5) 37. Bd2 (37. Qf6 $142 Rc2 38. Bd2 (38. Rd8+ Rxd8 39. Qxd8+ Kg7 $18) 38... Rxd2 39. Rxd2) 37... h5 $2 (37... Rxd2 38. Rxd2 (38. Qxd2 b3 $16) 38... Re8) 38. Qf6 Rxd2 39. Rxd2 {Hoping for Rad1.} Kh7 (39... Re8 $142 40. Rd8 Rxd8 41. Qxd8+ Kh7) 40. Rad1 Rg8 41. Rd8 {Intending Rxg8 and mate.} Qe2 42. Kh2 Rg7 43. Ra1 {White wants to mate with Raa8.} Ba2 44. Rc1 {White threatens Rcc8 and mate.} Be6 45. Ra1 (45. Qd4 $142 Rg8 46. Rxg8 Kxg8 47. Rb1) 45... Ba2 $1 46. Ra8 Be6 47. Rb8 {Threatening mate with Raa8.} Ba2 48. Rxb4 Qc2 49. Rb2 Qc7+ 50. g3 Be6 51. Ra8 Bc8 52. Rbb8 Rg8 53. e5 Kh6 54. Qf4+ Kg7 {[#]} 55. e6 $1 Qc5 (55... Bxe6 56. Rxg8+) 56. Qxf7+ {White mates.} Kh6 57. Rxc8 {[%mdl 64] Promotion} Rxc8 58. Rxc8 Qxc8 59. e7 {Accuracy: White = 71%, Black = 47%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.10"]
[Round "4.4"]
[White "Harika, Dronavalli"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2518"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,16,33,24,35,27,41,30,34,34,34,41,45,25,30,29,28,27,35,18,15,0,0,0,0,-29,-24,-48,-22,-33,-37,-72,-65,-68,-72,-89,-50,-58,-43,-47,-27,-28,-19,-34,-10,-47,-36,-53,-54,-64,-33,-38,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. g3 a6 7. Bg2 h5 8. O-O {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2.} h4 9. Re1 hxg3 10. hxg3 {White is slightly better.} d6 11. Nxc6 bxc6 12. Na4 c5 13. c4 Bb7 14. b3 Be7 {[#]} 15. Bb2 $146 ({Predecessor:} 15. Bd2 Bf6 16. Bc3 Bxc3 17. Nxc3 Ne7 18. Qg4 Ng6 19. f4 O-O-O 20. Rad1 Kb8 21. Rd3 Rd7 22. Red1 Rhd8 23. R1d2 Ka7 {½-½ (23) Sikora,J (2218)-Nagy,G (2452) Banska Stiavnica 2017}) 15... Bf6 16. Rb1 {[%cal Ba1b1,Bb1b2,Bb2d2][%mdl 32]} Rd8 17. Bc3 Bxc3 18. Nxc3 Ne7 19. Rb2 Nc6 20. Rd2 Nd4 21. Ne2 e5 22. Nxd4 cxd4 23. Qg4 f6 24. Rc1 Kf7 25. b4 a5 26. a3 axb4 27. axb4 Bc8 28. Qd1 Be6 29. c5 dxc5 30. bxc5 Rb8 31. Qe2 $1 Rb3 {Hoping for ...Rc3.} 32. Rd3 $1 Rb5 33. Rxd4 $1 {Accuracy: White = 87%, Black = 82%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.10"]
[Round "4.5"]
[White "Yip, Carissa"]
[Black "Kosteniuk, Alexandra"]
[Result "0-1"]
[ECO "C43"]
[WhiteElo "2412"]
[BlackElo "2504"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,104,22,17,22,22,43,50,52,21,22,0,18,-14,0,-25,0,0,0,0,0,0,0,-20,0,0,0,0,0,-37,0,-4,0,-9,0,-7,-10,-10,-4,-15,8,-12,-14,-31,-8,-25,0,-4,20,-8,0,-42,-58,-78,-37,-64,-76,-141,-112,-98,-104,-78,-103,-97,-81,-86,0,0,0,0,0,0,20,11,18,0,0,-321,-321,-354,-340,-599,-108,-573,-546,-29986,-29987,-29992,-29993,-29993,-29994]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxc3 7. bxc3 Nxe5 8. dxe5 Be7 9. O-O {9.Qh5 is not played anymore.} O-O {C43: Petroff Defence: 3 d4.} 10. Be3 Be6 11. f4 {Black must now prevent f5.} f5 $1 {White is slightly better.} 12. Rb1 b6 {[#]} 13. Be2 $146 ({Predecessor:} 13. Qf3 c5 14. Rfd1 Qc7 15. Bf2 Rad8 16. h4 d4 17. c4 Qd7 18. Rb5 Qc8 19. h5 {1-0 (46) Stankovic,M (2466)-Strebkovs,A (2278) Prague 2020}) 13... c6 14. Bf3 b5 15. Qd3 a5 16. Qd2 Qd7 17. Ra1 Ba3 18. Rfb1 Qe7 19. Qf2 Rab8 20. h3 Kh8 21. Kh2 a4 22. Kh1 Rb7 23. Be2 Rfb8 24. Bf3 Qf8 25. Ba7 Rc8 26. Be3 Be7 27. Be2 a3 28. Rd1 Ra8 29. Bf3 Ra4 30. Rd3 Rc4 31. Rb1 Qd8 32. Be2 Rb8 33. Ba7 Ra8 34. Bb6 Qf8 (34... Rxf4 $5 35. Qe3 Qb8 36. Qxf4 Qxb6 $15) 35. Be3 b4 36. cxb4 (36. Bf3 $142) 36... Rxc2 37. Rd2 Rxd2 38. Bxd2 d4 39. Bf3 Bxa2 40. Ra1 Qf7 (40... Bg8 $17 41. Bxc6 Rc8) 41. Bxc6 $11 Rc8 42. Ba4 $1 d3 43. Be1 Bd5 {Hoping for ...a2.} 44. Rxa3 Be4 45. Bd2 Qg6 46. Bb5 $2 {[%mdl 8192]} (46. Bd1 $11 {and White is okay.}) 46... Bh4 $1 $19 {[%cal Rh4f2]} 47. Qf1 {[#]} Qg3 $1 {...Rc2 is the strong threat.} 48. Ra2 $2 (48. Bxd3 Rd8 49. Bxe4 Qxa3 50. Bc1) 48... Qxh3+ $40 {[%mdl 128] White is in trouble.} 49. Kg1 Qg3 {aiming for ...Rc2.} 50. e6 Bf6 {Black mates.} 51. Be1 Bd4+ 52. Bf2 {[#]} Bxg2 $1 {[%mdl 512] Accuracy: White = 69%, Black = 88%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.11"]
[Round "5.1"]
[White "Dzagnidze, Nana"]
[Black "Koneru, Humpy"]
[Result "0-1"]
[ECO "D58"]
[WhiteElo "2515"]
[BlackElo "2580"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,128,0,3,0,0,0,0,0,0,0,0,0,0,0,-6,0,-13,0,0,-4,-24,0,0,0,-47,-44,-53,-45,-174,-147,-176,-70,-76,-75,-75,-66,-70,-68,-78,-85,-126,-65,-67,-63,-77,-85,-116,50,53,36,-38,-18,-56,-42,-82,-17,-54,-55,-63,-51,-72,-27,-62,-49,-49,-53,-55,-62,-140,0,-166,0,-115,0,-172,-172,-172,-172,-173,-173,-171,-173,-178,-170,-300,-297,-5069,-2802,-6548,-424,-6548,-5530,-5627,-6107,-1767,-1520,-29976,-29978,-29978,-29979,-29979,-29980,-29980,-29980,-29981,-29982,-29982,-29983]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 b6 8. Be2 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. Qb3 Re8 12. O-O c6 {D58: Queen's Gambit Declined: Tartakower Defence.} 13. Rfe1 Na6 {[%cal Bb8a6,Ba6c7,Bc7e6,Be6c5,Bc5e4][%mdl 32]} 14. e4 Nc7 {The position is equal.} 15. e5 Be7 16. Rad1 Ne6 17. Bf1 Qc7 18. g3 Rad8 19. h4 {[#]} a6 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 19... c5 20. Bh3 Bf8 21. Ne2 Bc8 22. Kh2 g6 23. a3 Bg7 24. Qc2 Qe7 25. Qd2 Qf8 26. Nf4 {½-½ (26) Piket,J (2609)-Kramnik,V (2751) Wijk aan Zee 1999}) 20. a3 c5 21. dxc5 Nxc5 22. Qa2 {[%cal Rc3d5]} Ne4 23. Ne2 Bc5 24. Ned4 Rxe5 25. Rc1 (25. b4 $15 Bxd4 26. Nxd4) 25... Qb8 $19 26. Red1 {[#]} Ree8 (26... Nxf2 $1 $19 {[%mdl 512]} 27. Kxf2 Re4) 27. b4 $15 Bxd4 28. Nxd4 Rc8 29. Qb3 Qe5 {...Rxc1 is the strong threat.} 30. Qe3 Qf6 31. Re1 Kf8 (31... Nd6 $17 32. Qd2 Rxc1 33. Rxc1 Nc4 $1 {[%mdl 512]}) 32. Rxc8 Rxc8 33. Ne2 Re8 34. Rc1 {[#]} Rc8 $2 (34... d4 $1 $17 {[%cal Rd4e3][%mdl 512]} 35. Nxd4 Nxg3 $1 {[%mdl 576] Deflection} 36. Qxg3 Qxd4) 35. Rxc8+ $14 Bxc8 36. Bg2 ({Better is} 36. f3 $14 Nd6 37. Qxb6) 36... Qc6 37. Bxe4 dxe4 38. Nc3 f5 ({Black should try} 38... Bb7 $1 $17) 39. Qd4 Bb7 40. Kf1 Kf7 41. Ke2 b5 42. Ke3 g5 $36 {[%mdl 2048] Black fights for an advantage.} 43. hxg5 hxg5 44. Ne2 Kg6 45. Qd8 (45. Qh8 $15) 45... Kh5 (45... Qd5 $17 46. Qxd5 Bxd5) 46. Qd1 $2 {[#]} (46. g4+ $1 $11 {and White is okay.} Kxg4 47. Qd1 f4+ 48. Nxf4+ Kf5 49. Ne2) 46... Kg6 ({Black should play} 46... Qb6+ $1 $19 47. Nd4+ Kg6) 47. Qd8 $1 $17 Kh5 (47... Qd5 $17 48. Qxd5 Bxd5) 48. Qd1 $19 {[#] And now Nd4+ would win.} Qb6+ $1 49. Nd4+ Kg6 50. Qd2 Bd5 51. Qc3 Bc4 52. Kd2 f4 53. Ke1 (53. gxf4 $142 gxf4 54. Kc2) 53... Qf6 ({Much less strong is} 53... fxg3 54. fxg3 Qf6 55. Qe3 $19) 54. a4 $2 (54. gxf4 gxf4 55. Kd1) 54... fxg3 55. fxg3 Qf1+ 56. Kd2 bxa4 57. Nc2 Qd3+ 58. Qxd3 exd3 {[%mdl 4096] Endgame KB-KN} 59. Ne3 Bb5 {Black mates.} 60. Kc3 Kf6 61. Ng4+ Kf5 62. Nf2 a3 63. Kb3 d2 64. Kxa3 Be2 {Accuracy: White = 58%, Black = 81%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.11"]
[Round "5.2"]
[White "Lagno, Kateryna"]
[Black "Ju, Wenjun"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2552"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,86,10,19,0,30,24,136,127,149,8,12,12,14,7,25,9,52,35,43,57,77,22,48,43,85,24,33,23,43,0,0,0,0,-29,-40,-87,-72,-106,-87,-76,-59,-61,-86,-196,-122,-111,-131,-226,-223,-240,-230,-312,-327,-318,-303,-320,-303,-320,-320,-318,-284,-329,-277,-282,-238,-227,-235,-902,-106,-900,-899]} 1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. d4 Bg4 6. Be2 cxd4 7. cxd4 e6 8. Nc3 Bb4 9. O-O Qa5 10. Be3 {B22: Sicilian: 2 c3.} Bxc3 $5 {[%mdl 4] Exploring less charted territory.} 11. bxc3 Qxc3 {[#]} (11... Nf6 $11 {remains equal.}) 12. d5 $146 {White is clearly better.} ({Predecessor:} 12. Rc1 Qa5 13. h3 Bf5 14. Rc5 Qxa2 15. Bb5 Nge7 16. Ne5 Rc8 17. Qf3 O-O 18. Nxc6 bxc6 19. Bxc6 {0-1 (32) Stein,W-Diehm,A (2045) Frankfurt 2003}) 12... exd5 13. Qxd5 (13. Rc1 $16 Qf6 14. Nd4 (14. Qxd5 Nge7 $14) 14... Bxe2 15. Qxe2) 13... Nge7 14. Qb5 O-O 15. Qxb7 Rfb8 16. Qa6 Rb2 17. Rac1 Qf6 18. Rfe1 h6 19. a3 (19. h3 $16 Bc8 20. Qa4) 19... Rab8 20. h3 Bc8 21. Qc4 (21. Qa4 $16) 21... Be6 $11 22. Qc5 (22. Qf4 {with more complications.} Qxf4 23. Bxf4 Rd8 24. a4 Bb3 25. Bb5) 22... Bxh3 23. gxh3 {Hoping for Qh5.} Rxe2 $1 {[%mdl 64] Remove Defender, Decoy} 24. Rxe2 Qxf3 {[%mdl 64] Double Attack} 25. Rec2 Qxh3 26. Qd6 Rd8 $1 {[%cal Rd8d6,Bb8d8,Bd8d4,Bd4g4][%mdl 32]} 27. Qg3 Qe6 28. Rc5 Nd4 29. Bxd4 $1 Rxd4 30. Re5 (30. Qf3 $17) 30... Qd7 ({Black should try} 30... Qf6 $1 $19 {And now ...Nf5 would win.} 31. Rcc5 Kh7) 31. Qf3 $17 Ng6 $1 $36 {[%cal Rg6e5][%mdl 2048] Black is in control.} 32. Re3 (32. Re4 $17) 32... Rg4+ $19 33. Kf1 Qb5+ $1 34. Ke1 Rg1+ 35. Kd2 Qb2+ $1 36. Rc2 Qd4+ 37. Rd3 Qa1 {[%csl Gg1][%cal Ra1e1]} 38. Re3 Rf1 39. Re8+ Kh7 40. Re4 f6 41. Qf5 {If White can now play Rg4 this consolidates a bit.} Rg1 ({But not} 41... Qxa3 42. Rg4 $17) 42. Re3 $2 {[#]} (42. Qf3) 42... Rd1+ $1 43. Ke2 {[#] intending Rg3.} Rd5 $1 {[%mdl 512] Accuracy: White = 49%, Black = 77%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.11"]
[Round "5.3"]
[White "Kosteniuk, Alexandra"]
[Black "Muzychuk, Mariya"]
[Result "1-0"]
[ECO "C80"]
[WhiteElo "2504"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,79,0,0,7,23,21,33,13,60,58,59,56,51,43,55,55,73,77,73,83,106,61,107,18,51,59,64,69,71,60,64,-42,27,33,69,42,80,87,156,94,97,85,176,167,178,184,179,169,206,220,261,261,261,256,367,359,400,396,357,341,634,627,576,556]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. a4 b4 10. Nbd2 {C80: Open Ruy Lopez: Sidelines and 9 Nbd2.} Nc5 {[#]} 11. c3 $146 ({Predecessor:} 11. Re1 Be7 12. Nf1 O-O 13. Ng3 Nxb3 14. cxb3 Na5 15. Nd4 Qd7 16. Qd3 c5 17. Ndf5 g6 18. Nxe7+ Qxe7 {½-½ (45) Winkler,S (1855)-Ofstad,P (2197) Rijeka 2010}) 11... Qd7 12. Nd4 {White is slightly better.} Nxd4 ({Of course not} 12... Nxe5 $6 13. f4 $16) 13. cxd4 Nxb3 14. Nxb3 Be7 15. Qd3 O-O 16. Qg3 f6 17. Bf4 fxe5 18. Bxe5 {[%csl Ge5][%cal Rg3g7][%mdl 64] [#] Double Attack} Bd6 19. Rfc1 Bf5 20. Na5 (20. Nc5 $16 Bxe5 21. dxe5 (21. Qxe5 Qf7 $14)) 20... Rf6 {White must now prevent ...Rg6.} 21. Qb3 $1 {[%cal Rb3d5]} Bxe5 22. dxe5 Re6 23. Qxb4 Rxe5 24. f3 (24. Nc6 $14 Re6 25. Nd4) 24... Rae8 (24... Re2 $15 25. Re1 Rae8 26. Rxe2 Rxe2) 25. Nc6 $36 {[%mdl 2048] White is pushing.} R5e6 26. Nd4 Rb6 27. Qd2 Bg6 (27... Rg6 $142) 28. a5 (28. Rc5 $142) 28... Rf6 $16 29. Rc5 Qd6 (29... c6 $16) 30. Rac1 $18 Qe5 31. Nc6 Qe2 32. Rxd5 ({Don't take} 32. Qxd5+ $6 Bf7 $16) 32... Rfe6 33. b4 h6 34. Qxe2 Rxe2 35. Rd7 Kf8 (35... R8e3 $142 36. Rxc7 Kh7) 36. Nd4 Rb2 37. h3 Rxb4 38. Rcxc7 Bh5 $2 {[#]} (38... Re5 39. Rxg7 Rxd4) 39. Nf5 Rb5 40. Nxg7 {Accuracy: White = 76%, Black = 44%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.11"]
[Round "5.4"]
[White "Gunina, Valentina"]
[Black "Harika, Dronavalli"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2461"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,75,-2,-9,-6,-8,0,-21,-22,-27,-23,-37,0,4,97,13,49,-23,-20,-23,64,24,29,8,2,-7,0,0,33,36,33,0,4,0,142,142,229,248,344,358,585,122,559,275,275,176,225,184,618,604,29988,29987,29989,29988,29988,29989,29989,29990,29992,29993,29996,29997,29997,29998]} 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 8. h3 b4 {B26: Closed Sicilian: 3 g3, lines with early Be3.} 9. Nd1 $1 Bd7 10. f4 e6 {The position is equal.} 11. Nf3 Nge7 {[#]} 12. h4 $146 ({Predecessor:} 12. f5 exf5 13. Bh6 O-O 14. g4 fxe4 15. dxe4 Nc8 16. O-O Nd4 17. Nxd4 Bxd4+ 18. Kh1 {0-1 (51) Wahedi,A (2283)-Kunin,V (2510) Marburg 2006}) 12... Nd4 13. h5 Ba4 (13... e5 $11) 14. Rc1 (14. Bxd4 $1 $16 Bxd4 15. a3 (15. Nxd4 cxd4 16. b3 Bc6 $14)) 14... Nec6 15. Nxd4 (15. c3 $14 Nxf3+ 16. Bxf3) 15... cxd4 $11 16. Bf2 Qa5 (16... g5 $11) 17. g4 (17. h6 $5 {[%cal Rh6g7]} Bf8 18. b3 $14) 17... Bb5 18. h6 Bf6 19. g5 Bd8 20. b3 Rc8 21. O-O O-O 22. Bg3 Qxa2 23. f5 $36 {[%mdl 2048] White has good play.} Be7 (23... e5 $1 $11 {keeps the balance.}) 24. Bh3 $16 exf5 (24... Kh8 $16 {is a better defense.} 25. Nf2 (25. fxe6 fxe6 26. Bf4 Rce8 $16) 25... Qa5) 25. exf5 $18 {Threatens to win with f6.} Ra8 26. Nf2 (26. f6 Bd8) 26... Ne5 $2 (26... Qa5 27. f6 Bd8 28. Bxd6 Bc7) 27. Ne4 $2 (27. Bxe5 $18 {and the rest is easy.} dxe5 28. Ra1) 27... Bxd3 $2 {[%mdl 8192]} (27... Qa5 $16 {is a better chance.}) 28. Bxe5 ({Less strong is} 28. cxd3 Qxd2 29. Nxd2 Bxg5 $16) (28. fxg6 $142 Bxf1 29. gxh7+ Kh8 30. Qxd4 (30. Rxf1 Qa5 $14)) 28... Bxe4 ({Don't blunder} 28... Bxf1 $2 29. Qxd4 (29. Bf6 Bxh3 30. Bxe7 Qa5 $18) 29... Qa5 30. Bxd6 $18) 29. Bxd4 {aiming for Qe3.} Qa5 30. Qe3 d5 $2 (30... Rae8) 31. fxg6 hxg6 {[#] Threatening ...Kh7.} 32. h7+ $1 {[%mdl 512] White mates.} Kxh7 {[#]} 33. Bc8 {Played: Bh3-e6} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.11"]
[Round "5.5"]
[White "Krush, Irina"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2422"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,94,30,37,37,49,42,64,64,96,56,77,0,0,0,0,0,-10,1,77,70,80,30,65,62,35,30,104,124,104,97,126,49,44,42,40,36,41,21,97,54,45,0,89,104,106,111,92,92,104,99,111,113,108,104,91,63,70,72,54,6,8,0,0,-134,-105,-106,-75,-84,-96,-689,-686,-2012,-680,-1395,-1472,-1287,-1139,-1009,-886,-6279,-5595,-29970,-29970,-29978,-29979,-29978,-29979]} 1. g3 g6 2. Bg2 Bg7 3. d4 d5 4. Nf3 e6 5. O-O Ne7 6. Nc3 {[%cal Bb1c3,Bc3e4,Be4c5][%mdl 32] D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nbc6 7. e4 dxe4 8. Nxe4 {White is slightly better.} f5 9. Nc5 Nxd4 {[#]} 10. c3 $146 (10. Re1 $16) ({Predecessor:} 10. Nxd4 Qxd4 11. Nxb7 Rb8 12. Na5 Kf7 13. Nb3 Qxd1 14. Rxd1 Ba6 15. c3 Be2 16. Rd7 {0-1 (57) Kaidanov,G (2645)-Shabalov,A (2600) Key West 1994}) 10... Nxf3+ $11 11. Qxf3 c6 12. Qe2 Qd6 13. Be3 e5 (13... Nd5 $11) 14. Rad1 $36 {[%mdl 2048] White has good play.} Qf6 $1 15. Qd2 {aiming for Qd8+.} (15. h4 {is more complex.} Qf7 16. Bg5 h6 17. Qd2 Nd5 18. c4) 15... O-O 16. Nd7 $1 {[%cal Rd7f6]} Bxd7 $1 17. Qxd7 b6 (17... e4 $1 $11 {keeps the balance.}) 18. Rd6 Qf7 19. Bg5 Rfe8 20. Bxe7 (20. Rfd1 $16) 20... Qxe7 $14 21. Bxc6 {Hoping for Qxe7.} Rab8 22. Rfd1 {Qxe8+! is the strong threat.} Bf8 23. Ba4 Kh8 (23... b5 $11 {remains equal.} 24. Bb3+ (24. Bxb5 Qxd7 25. Bxd7 Bxd6 $11) 24... Kh8) 24. Qc6 Rec8 25. Qd7 Re8 26. Qb5 $1 Qxd6 27. Rxd6 Bxd6 28. Qd5 Red8 29. Bb3 {[%mdl 1024] White has strong compensation.} Kg7 {[#]} 30. h4 $1 Kh6 {[#]} 31. h5 $1 {[%mdl 512]} Rbc8 (31... gxh5 32. Qe6+) 32. Qd2+ f4 33. hxg6 hxg6 34. Kg2 Bc5 35. Qe2 Rf8 {Threatens to win with ...f3+.} 36. Qxe5 (36. Qg4 $11 fxg3 37. Bc2 Rxf2+ {[%mdl 64] Double Attack} 38. Kxg3) 36... Rce8 $17 37. Qd5 f3+ 38. Kh3 ({Don't blunder} 38. Kf1 $2 Re2 $19) 38... Bxf2 {Strongly threatening ...Rf5.} 39. Bd1 $2 {[%mdl 8192] [#]} (39. Ba4 $17 Rd8 40. Qe6) 39... Rd8 $1 $19 40. Qb3 Bc5 (40... Kg5 $142 41. Bxf3 Rxf3) 41. Qa4 {[#] intending Bxf3!} Rd5 {Played: Rd8xd1} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.13"]
[Round "6.1"]
[White "Koneru, Humpy"]
[Black "Kosteniuk, Alexandra"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2580"]
[BlackElo "2504"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,121,0,-8,-6,0,-5,14,8,15,10,62,0,36,37,54,60,56,51,59,33,33,29,32,35,39,31,39,33,38,30,36,29,52,46,58,43,43,46,52,14,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,14,24,18,19,18,8,11,28,85,104,122,127,116,180,141,124,87,87,87,87,87,87,87,87,87,88,37,39,0,88,87,95,85,164,150,238,235,310,277,1484,1293,1181,1154,2172,1977,1521,1133,1245,1369,6376,6239,29988,29989]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Bd2 b6 {6...b6 is better than 6...c5.} 7. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} Ba6 8. Qa4 {[#]} Qe7 $146 ({Predecessor:} 8... c5 9. cxd5 Bxf1 10. Rxf1 exd5 11. Ke2 Nbd7 12. Rfd1 Qe7 13. Kf1 Rfc8 14. Qa6 Qe6 {1-0 (44) Artemiev,V (2731)-Kovalev,V (2660) Wijk aan Zee 2020}) 9. a3 {The position is equal.} Bxc3 $1 10. Bxc3 Ne4 (10... Rc8 $11) 11. Be2 (11. cxd5 $14 Nxc3 12. Rxc3 Bxf1 13. Kxf1 (13. Rxf1 exd5 14. b4 c6 $14)) 11... Nxc3 12. Rxc3 dxc4 13. Bxc4 Bb7 14. Be2 Rc8 15. Qc2 (15. O-O {is more complex.} Nd7 16. Ba6 Bxa6 17. Qxa6 e5 18. Qb7) 15... c5 16. dxc5 Rxc5 17. Rxc5 Qxc5 18. Qxc5 bxc5 19. Bb5 Na6 20. Ke2 Nc7 21. Bd3 Nd5 22. Rc1 Rc8 23. Nd2 Nb6 24. f3 Kf8 25. Nc4 ({Worse is} 25. Bxh7 g6 $17) 25... Bd5 26. Na5 c4 $1 {[%cal Rc4d3]} 27. Bb1 ({Don't play} 27. Bxh7 g6 $17) 27... e5 28. e4 ({Not} 28. Bxh7 $2 g6 $19) 28... Be6 29. Ba2 Ke7 (29... Rc5 $5 30. b4 $8 Rc7 $11) 30. b3 cxb3 31. Rxc8 Nxc8 32. Bxb3 Bxb3 33. Nxb3 $11 {[%mdl 4096] Endgame KN-KN} Kd6 34. Kd3 Nb6 35. Kc3 Na4+ 36. Kb4 Nb2 37. Kb5 Nd1 38. Nd2 Nc3+ 39. Kb4 Ne2 40. Nc4+ Ke6 41. Kb5 g6 (41... f5 $16) 42. Ka6 $1 $18 f5 43. Kxa7 fxe4 44. fxe4 {Hoping for a4.} Nc3 45. Kb6 Nxe4 46. Ne3 Nc3 {Threatening ...Kd6.} 47. Kc5 $1 Ne4+ 48. Kb5 ({White should play} 48. Kb4 $16) 48... Nd6+ $14 49. Kc5 Ne4+ $1 50. Kb4 Nd6 51. Nc4 {Strongly threatening Nxd6.} Nf5 {[#]} (51... Nb7 $16 {was worth a try.}) 52. Kc5 $1 $18 h5 {[#]} (52... Nd4 $16) 53. Nd2 $1 Nd6 54. a4 {[%cal Ba3a4,Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Nb7+ $2 (54... Nf5 55. a5 Kd7) 55. Kc6 Nd8+ 56. Kc7 Ke7 57. a5 Ne6+ 58. Kc6 Kd8 59. a6 Kc8 60. a7 {[%cal Ra7a8]} Nd4+ 61. Kb6 {Accuracy: White = 87%, Black = 66%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.13"]
[Round "6.2"]
[White "Ju, Wenjun"]
[Black "Harika, Dronavalli"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2583"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,33,23,14,18,2,6,0,8,8,0,0,13,8,14,7,13,10,17,11,11,25,31,24,46,54,40,39,74,68,68,72,63,14,17,17,11,10,8,0,12,0,8,8,8,5,8,8,9,1,5,0,0,0,0,0,0,0,0,2,2,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O c6 7. Nc3 Bf5 8. b3 Ne4 9. Bb2 Nxc3 10. Bxc3 Be4 11. Nh4 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} Bxg2 12. Nxg2 d5 13. Qd3 Nd7 {[#]} 14. cxd5 $146 ({Predecessor:} 14. e4 dxc4 15. Qxc4 Qb6 16. Rad1 a5 17. Ne3 Qa6 18. Ba1 Nb6 19. Qxa6 Rxa6 20. d5 Bxa1 21. Rxa1 cxd5 22. exd5 {½-½ (30) Mitscherling,A-Wolf,A Mecklenburg VP 1996}) 14... cxd5 15. Qb5 Nb6 16. Nf4 e6 17. Rac1 Qd7 (17... a6 $5 {[%cal Ra6b5]} 18. Qb4 Re8 $11) 18. Qa5 Nc8 19. Bb4 {[#] And now Rc7 would win.} b6 20. Qa6 Rd8 21. e3 Ne7 22. Bxe7 Qxe7 23. Nd3 e5 24. dxe5 Bxe5 25. Nxe5 Qxe5 26. Qb7 d4 $1 {The position is equal.} 27. exd4 Qxd4 28. Rc7 Qf6 $1 29. a4 Re8 30. Kg2 a5 31. Rd1 Rab8 32. Qc6 Qxc6+ 33. Rxc6 $11 {[%mdl 4096] Endgame KRR-KRR} Re5 34. Rcd6 b5 35. R1d5 Re4 $1 36. axb5 Rb4 {[%mdl 64] [#] Double Attack} 37. b6 R4xb6 38. Rxb6 Rxb6 39. Rxa5 Rxb3 40. h4 {Accuracy: White = 97%, Black = 96%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.13"]
[Round "6.3"]
[White "Lagno, Kateryna"]
[Black "Dzagnidze, Nana"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2552"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,12,16,16,20,23,22,23,23,21,31,38,23,30,13,32,19,26,27,30,21,25,4,27,0,0,0,0,0,3,1,0,0,1,0,2,0,0,0,0,-8,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. a3 b5 $1 {[%mdl 4] outshines the older 7...Nf6.} 8. Nxc6 dxc6 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2.} 9. Qg4 Nf6 10. Qg3 Qxg3 11. hxg3 Be7 12. f3 {[#]} Bb7 $146 ({Predecessor:} 12... O-O 13. g4 Nd7 14. g5 Bb7 15. Kf2 Rad8 16. g3 c5 17. Be2 f6 18. gxf6 Bxf6 {½-½ (50) Tonisson,P (2401)-Sasvari,T (2547) ICCF email 2016}) 13. g4 Nd7 14. a4 f6 15. Be2 h6 16. Kf2 Kf7 17. Rhd1 Rhd8 18. Rd2 Ne5 19. Rad1 Rxd2 {The position is equal.} 20. Rxd2 Rd8 21. Rxd8 Bxd8 22. b3 Nd7 23. Na2 Be7 24. Nc1 Nc5 25. Nd3 (25. axb5 {feels hotter.} cxb5 26. b4 Na4 27. Bd2 Bc6 28. Nb3) 25... Nxd3+ 26. Bxd3 $11 {KBB-KBB} e5 27. Bb6 Bc8 28. c4 {[%cal Rc4b5]} bxa4 29. bxa4 c5 30. a5 Be6 31. Ke3 {Accuracy: White = 95%, Black = 100%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.13"]
[Round "6.4"]
[White "Muzychuk, Mariya"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2552"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,117,53,72,66,64,64,64,64,79,87,83,85,108,101,95,92,101,102,101,86,148,142,130,111,114,85,97,61,100,27,31,29,66,11,0,0,0,0,53,56,53,53,71,53,53,53,53,53,53,53,53,53,54,54,54,54,64,43,43,43,43,43,43,43,43,43,43,43,43,10,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,34,90,90,90,90,90,90]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Qe2 d6 8. c4 g6 9. Nc3 Bg7 10. Rd1 {has lost popularity (10.Nf3).} O-O 11. Be3 {B42: Sicilian: Kan Variation: 5 Bd3.} b6 12. f3 Bb7 13. Rac1 {White is slightly better.} Nc6 14. Nxc6 Qxc6 {[#]} 15. Qd2 $146 ({Predecessor:} 15. Qf2 Nd7 16. Bf1 Rfd8 17. b4 Rab8 18. a3 Bc8 19. Ne2 Qc7 20. Nd4 Nf6 21. Nb3 {0-1 (64) Petriashvili,N (1508)-Aslanov,F (1749) Maribor 2012}) 15... Rfd8 16. Bf1 Rab8 17. b4 Qc7 18. Na4 Ba8 19. Bf4 {[%cal Rf4d6]} Ne8 (19... Bf8 $142) 20. Qf2 $16 Qb7 21. c5 {[%cal Rc5d6]} b5 22. Nb6 Bf6 23. Nxa8 (23. Kh1 {feels hotter.} h5 24. a3 Qa7 25. Kg1 Be7 26. h3) 23... Rxa8 24. Bxd6 (24. c6 $16 Qe7 25. Be3) 24... Nxd6 $11 25. Rxd6 Be5 26. Rdd1 ({White should try} 26. Rd2 $14) 26... Qc7 27. g3 Rxd1 $1 28. Rxd1 Rd8 (28... Bc3 $11) 29. Qc2 Rxd1 30. Qxd1 a5 31. f4 ({Of course not} 31. Bxb5 $6 axb4 32. Qc1 Bc3 $11) 31... Bc3 32. Qd6 Qxd6 33. cxd6 Bxb4 $14 {[%mdl 4096] Endgame KB-KB} 34. d7 Bc5+ 35. Kg2 Bb6 36. Bxb5 Kf8 37. g4 h6 38. g5 hxg5 39. fxg5 Ke7 40. Kf3 Kd8 41. h4 Bd4 42. Kf4 Ke7 43. Bc6 Bc3 44. a4 Bd4 45. Kg4 Be3 46. Bb5 Bd2 47. h5 gxh5+ 48. Kxh5 Be3 49. g6 fxg6+ 50. Kxg6 e5 51. Kf5 Bd4 52. Kg4 Kd8 53. Kf3 Bc3 54. Ke2 Bb4 55. Kd3 Be1 56. Kc4 Bd2 ({Better is} 56... Kc7 $1 $14) 57. Kd5 $16 {White is better.} Bc3 58. Kd6 Bb2 59. Bc4 {Accuracy: White = 86%, Black = 88%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.13"]
[Round "6.5"]
[White "Yip, Carissa"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2412"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,107,47,33,36,33,40,17,19,14,10,0,6,0,2,-5,60,52,53,36,49,0,0,0,27,-23,-23,-11,-16,-94,-102,-127,-89,-81,-58,-139,0,0,0,0,0,0,0,0,175,167,167,167,167,168,156,166,164,158,158,143,114,46,616,616,969,17,23,24,462,102,102,102,103,103,101,102,649,633,29980,412,29966,11661,29978,29979,29979,29980,29976,1458,5613,5139,1927,1581,29986,29987,29986,29987,29990,29991,29995,29990,29997,29950,29998,29999]} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 c6 6. Be2 Bf5 {B04: Alekhine's Defence: 4 Nf3.} 7. O-O Nd7 8. c4 Nb4 {The position is equal.} 9. Nd3 e5 {[#]} 10. Re1 $146 ({Predecessor:} 10. d5 Bxd3 11. Bxd3 cxd5 12. cxd5 Nxd3 13. Qxd3 Bd6 14. Be3 O-O 15. Nc3 f5 16. Nb5 {½-½ (46) Audie,A (2280)-Squires,M (2287) ICCF email 2017}) 10... Be7 11. Nxb4 Bxb4 12. Bd2 Qa5 (12... a5 $11) 13. Nc3 $14 exd4 14. a3 Bxc3 15. Bg4+ Be6 16. Bxe6 O-O-O 17. bxc3 dxc3 18. Bxc3 Qxc3 19. Rc1 (19. Bxf7 $11 {remains equal.} Nc5 20. Qg4+ Kb8 21. Rad1) 19... Qxa3 $17 20. Bh3 {aiming for Qd4.} g6 21. Ra1 Qc5 22. Qb3 $1 {Black must now prevent Reb1.} f5 (22... Kb8 $1 $17 23. Qg3+ Ka8) 23. Reb1 $11 {[%csl Gb1][%cal Rb3b7]} Nb6 $1 {Hoping for ...Rd2.} 24. Rxa7 $40 {[%mdl 128] White is up to no good.} Rd7 25. g3 Kb8 26. Ra2 Qxc4 $2 (26... Nc8 $1 $11 {and Black stays safe.}) 27. Qa3 $18 {Strongly threatening Qa7+.} Rhd8 28. Qa7+ Kc8 29. Raa1 (29. Rxb6 {gets mated.} Rd1+ 30. Kg2 Qd5+ 31. f3 Qd2+ $1 {[%mdl 512]} 32. Rxd2 R8xd2#) 29... Nd5 30. Qa8+ Kc7 31. Rxb7+ Kd6 32. Rxd7+ $1 Rxd7 33. Qb8+ ({White should play} 33. Bg2 $1 $16 {[%cal Rg2d5] Bxd5 is the strong threat.} Ke7 34. Qg8) 33... Ke7 $2 {[%mdl 8192]} (33... Rc7 $14) 34. Re1+ Kf6 {[#]} 35. Qe8 $2 ({White must play} 35. Bxf5 $1 $18 {[%mdl 512]} Kxf5 36. Qe5+ Kg4 37. Re4+ Qxe4 38. Qxe4+ Kg5 39. Qh4+ Kf5 40. Qh3+ Kf6 41. Qxd7) 35... Re7 36. Qh8+ Rg7 $4 {[%mdl 8192]} (36... Kf7 $1 $11 37. Qxh7+ Kf6 38. Rxe7 Nxe7) 37. Bxf5 $2 (37. Qd8+ $18 {is the precise move to win.} Re7 38. Bg2) 37... Qc3 $16 38. Qf8+ Kg5 39. h4+ Kh6 40. Re6 {Threatens to win with Be4.} Qa1+ $2 {[%mdl 8192]} (40... Qb4 $16 41. Rd6 Qe1+ 42. Kg2 Qe7 43. Qxe7 Rxe7) 41. Kg2 $18 {And now Bxg6! would win.} Qa7 {Now ...Qf7 and Black clings on.} 42. Be4 (42. g4 $142 Qf7 {[#]} 43. Kg3 $3 {[%mdl 512]} Qc7+ 44. Rd6 $1 {[%mdl 512]} Qxd6+ 45. Qxd6 Rf7 46. Be6 $1 {[%mdl 512]} Kg7 47. Qe5+ Kf8 48. Qh8+ Ke7 49. Bxf7) 42... Qd7 (42... Qf7 $18 43. Qd8 Nf4+ 44. gxf4 Qxf4) 43. Qf5 $1 {[%csl Gh4][%cal Rf5g5]} Qd8 44. Rxc6 Ne3+ 45. fxe3 Qd2+ 46. Qf2 (46. Kf3 $142 Qd1+ 47. Kf4 Qf1+ 48. Bf3 Qc4+ 49. Rxc4 gxf5 50. Rc6+ Rg6 51. Kxf5) 46... Rd7 47. Qxd2 Rxd2+ {[%mdl 4096] Endgame KRB-KR} 48. Kf3 {White wants to mate with Rc7.} Rd1 49. Rc7 {White mates.} Rf1+ 50. Ke2 Rf8 51. g4 Rh8 52. Rf7 Rg8 53. g5+ Kh5 54. Rf4 {Accuracy: White = 67%, Black = 50%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.14"]
[Round "7.1"]
[White "Dzagnidze, Nana"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2515"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,147,-12,0,-2,0,0,12,-5,20,-3,28,38,31,41,37,25,39,49,40,-37,-37,-57,-25,-26,-32,-10,-12,-93,-86,-77,-83,-91,-95,-91,-89,-96,-96,-95,-79,-65,-80,-123,-109,-108,-99,-120,-120,-120,-117,-146,-140,-153,-146,-193,-167,-162,-162,-158,-161,-157,-157,-157,-157,-192,-188,-177,-171,-177,-206,-203,-200,-200,-139,-184,0,-156,-156,-156,-156,-164,-163,-165,-168,-161,-156,-163,-163,-175,-164,-181,-181,-183,-183,-181,-181,-181,-179,-189,-165,-175,-166,-199,-202,-240,-234,-250,-243,-258,-236,-243,-250,-262,-206,-250,-242,-235,-245,-293,-254,-286,-283,-314,-245,-316,-280,-356,12,12,12,12,12,0,0,0,12,0,8,0,12,0]} 1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. Nd2 cxd4 5. exd4 Qb6 6. Ngf3 {D00: 1 d4 d5: Unusual lines.} Nc6 7. Nb3 Ne4 8. Be3 {[#]} g6 $146 ({Predecessor:} 8... Bg4 9. Be2 e6 10. O-O Bd6 11. h3 Bh5 12. c4 Qc7 13. Nc5 Nf6 14. Rc1 dxc4 15. Rxc4 {½-½ (22) Berkes,F (2648)-Bok,B (2596) Moscow 2017}) 9. c4 Qd8 10. cxd5 Qxd5 11. Rc1 Bg7 12. Bc4 Qd6 13. d5 Ne5 14. Bb5+ (14. Nxe5 $1 $14 Bxe5 15. Qe2) 14... Bd7 $15 15. Bxd7+ Qxd7 (15... Nxd7 {is interesting.} 16. Qc2 Ndf6 17. O-O O-O 18. Rfd1 Qd7) 16. Nxe5 Bxe5 17. O-O Bxb2 18. Bd4 (18. Rc4 $11 {keeps the balance.} Nd6 19. Nc5) 18... Bxd4 19. Qxd4 {[%cal Rd4h8]} Nf6 20. Rfd1 {[#]} b6 $1 21. d6 O-O 22. Qe5 Rfe8 23. h3 Nh5 24. Rc7 exd6 25. Qc3 Qe6 26. Qf3 Qf6 27. Qc6 {[#]} d5 $1 28. Nd4 (28. Qxd5 Rad8) 28... Kg7 29. a4 Nf4 30. Qxf6+ Kxf6 31. Nb5 Re7 32. Rc6+ Kg7 33. g3 Nxh3+ 34. Kg2 Ng5 35. Rxd5 Ne6 36. Rdd6 Rd8 37. a5 bxa5 38. Rxd8 Nxd8 $19 {[%mdl 4096] Endgame KRN-KRN} 39. Ra6 Re5 40. Nd4 Ne6 41. Nb3 {[#]} Nd8 $2 ({Better is} 41... a4 $1 $19 42. Rxa4 Rb5) 42. Nxa5 $2 (42. Nd4 $1 $11) 42... Re7 $17 43. Nc4 h5 44. Ne3 Ne6 45. Ra2 Rd7 46. Ra5 Nd4 47. Ra2 Nb3 48. Ra3 Rb7 49. Ra6 Nc5 50. Ra5 Nd3 51. Ra3 Nb4 52. Nc4 a6 {[%cal Ba7a6,Ba6a5][%mdl 32]} 53. Ra4 Rb8 54. Ne3 Kf8 55. Kf3 Rb5 56. Ke4 a5 57. Ra1 Nc6 58. Kd3 Rc5 59. f4 Ke7 60. Nc4 g5 61. Ne3 gxf4 62. gxf4 Kf6 63. Rb1 Nb4+ 64. Ke4 h4 65. Rd1 Rh5 66. Rd6+ Ke7 67. Rd2 {White wants to play Nf5+.} h3 $2 ({Black should try} 67... a4 $19 68. Rb2 Nc6 69. Nf5+ Kd8 70. Rd2+ Kc7) 68. Nf5+ $11 {[#]The position is equal.} Rxf5 $1 69. Kxf5 {KR-KN} a4 {Strongly threatening ...a3.} 70. Re2+ Kd6 {White must now prevent ...a3.} 71. Rd2+ Ke7 {Threatens to win with ...a3.} 72. Re2+ Kd7 73. Rd2+ Ke7 {aiming for ...a3.} 74. Re2+ {Accuracy: White = 73%, Black = 79%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.14"]
[Round "7.2"]
[White "Krush, Irina"]
[Black "Koneru, Humpy"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2422"]
[BlackElo "2580"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,103,4,0,0,0,16,0,0,0,0,0,21,24,18,29,20,1,5,0,4,0,0,0,0,0,0,0,0,0,16,0,11,0,29,29,24,21,27,18,29,29,44,40,51,29,33,37,53,48,31,48,39,20,46,50,43,20,43,43,43,43,62,50,137,127,155,0,0,0,0,0,0,0,8,0,2,6,8,0,0,0,3,8,70,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b6 7. Bg5 Bb7 8. e3 d6 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} 9. Ne2 Nbd7 10. Qc2 c5 11. Rd1 Qc8 12. Bh4 {[#]} d5 $146 (12... Ba6 {seems wilder.} 13. Nc3 d5 14. cxd5 Bxf1 15. Rxf1 Nxd5 16. Nxd5 exd5 17. dxc5 Nxc5 18. b4 Ne4) ({Predecessor:} 12... Ba6 13. Nc3 d5 14. cxd5 Bxf1 15. Rxf1 Nxd5 16. Nxd5 exd5 17. dxc5 Nxc5 18. Be7 Re8 19. Bxc5 bxc5 20. Rxd5 {½-½ (29) Pitkaenen,J (2500)-Romm,M (2462) ICCF email 2011}) 13. cxd5 Bxd5 14. f3 cxd4 15. Qxc8 Rfxc8 16. Rxd4 Bc4 17. Nc3 Bxf1 18. Rxf1 Ne5 19. Rf2 Nc4 20. Bxf6 gxf6 21. Nd1 b5 22. Rc2 a6 (22... f5 {is interesting.} 23. e4 fxe4 24. Rxe4 Kg7 25. Rg4+ Kf8) 23. Ke2 Rd8 (23... Na5 {feels hotter.} 24. Rc3 f5 25. a4 Nc4 26. b3 Na5) 24. Rxd8+ Rxd8 $11 {[%mdl 4096] Endgame KRN-KRN} 25. Nf2 f5 26. Nd3 Kf8 27. a4 Rd6 28. b3 Na5 29. axb5 axb5 30. Rc5 Rb6 31. Ne5 {[#] Black must now prevent Nd7+.} Ke7 $1 32. b4 Nb7 $1 {[%cal Rb7c5]} 33. Rc2 Nd8 34. f4 Rb7 35. Kf3 f6 36. Nc6+ Nxc6 37. Rxc6 $14 {KR-KR} Kf7 38. h3 Ke7 {[#]} (38... h5 $14) 39. g4 $1 $16 Kf7 40. g5 $2 ({Better is} 40. gxf5 $16 exf5 41. h4) 40... fxg5 $11 41. fxg5 Ra7 42. Rb6 Ra1 43. Rxb5 Rf1+ 44. Kg2 Re1 45. Re5 Rb1 46. Rb5 Re1 47. Kf2 Rh1 48. Kg3 Re1 (48... Kg6 $11) 49. Kf2 (49. Kf4 $14) 49... Rh1 {The position is equal.} 50. Kg2 Re1 51. Kf2 Rh1 52. Kg2 {Accuracy: White = 95%, Black = 88%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.14"]
[Round "7.3"]
[White "Kosteniuk, Alexandra"]
[Black "Lagno, Kateryna"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2504"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,60,-10,-12,-12,-12,-12,-18,-14,-11,-14,-15,-25,-17,0,-2,-12,-21,-6,0,0,0,0,0,0,0,0,-6,0,0,0,0,0,0,0,-8,-2,-2,-9,-8,0,-2,-7,-10,0,0,0,-32,0]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 {[%cal Bb8c6,Bc6e5,Be5c4][%mdl 32]} 4. d4 cxd4 5. Nxd4 e6 6. g3 Qb6 7. Ndb5 Ne5 8. Bg2 a6 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6.} 9. Na4 Qd8 10. Nd6+ Bxd6 $1 {The position is equal.} 11. Qxd6 Nxc4 12. Qc5 d5 13. b3 Bd7 14. bxc4 {[#] And now Nb6 would win.} Bxa4 15. Qa3 {[#]} b5 $146 ({Predecessor:} 15... Qd7 16. Bb2 b5 17. cxd5 exd5 18. Bxf6 gxf6 19. O-O Qe7 20. Qf3 O-O 21. Qg4+ Kh8 22. Bxd5 {0-1 (62) Dubov,D (2700)-Vachier Lagrave,M (2775) Paris 2019}) 16. cxb5 axb5 17. Bf4 Ne4 18. Bxe4 dxe4 19. O-O f6 20. Qb4 Kf7 21. Rfc1 {[#] Rc7+ is the strong threat.} e5 22. Be3 Rc8 23. Qxe4 Qd7 24. Rxc8 Rxc8 25. Qxh7 Bc2 26. Qh5+ Bg6 27. Qf3 Bf5 28. Qh5+ Bg6 29. Qf3 Bf5 30. Qh5+ Bg6 {Accuracy: White = 100%, Black = 94%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.14"]
[Round "7.4"]
[White "Gunina, Valentina"]
[Black "Muzychuk, Mariya"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2461"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "146"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,146,13,0,0,0,0,9,-41,-42,-41,-29,-88,-66,-74,-72,-86,-77,-93,-95,-91,-84,-205,-99,-102,-84,-132,-95,-109,-105,-115,-115,-109,-126,-143,-135,-137,-19,-29,-27,-39,0,0,-30,-50,0,0,0,0,1,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,0,0,0,0,0,0,0,0,0,-1,0,0,0,-9,0,-8,-8,-8,-8,-8,0,-8,-6,-6,-6,-6,0,0,0,0,0,-8,0,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,-110,-110,-110,-110,-110,-110,-110,-110,-7885,-6997,-5097,-5077,-29974,-29973,-29971,-29964,-29982,-29983,-29983,-29984,-29984,-29982]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. b3 Ne7 6. Bb2 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} d6 7. O-O e5 {[#]} 8. Nh4 $146 {The position is equal.} ({Predecessor:} 8. c3 f6 9. d4 cxd4 10. cxd4 Ng6 11. Qc2 Qb6 12. Nbd2 Be7 13. Nc4 Qc7 14. Ne3 {1-0 (45) Lomasov,S (2393)-Yakubboev,N (2431) Khanty-Mansiysk 2016}) 8... g5 9. Nf3 Ng6 10. Ne1 (10. d3 $11) 10... Bg7 11. d3 O-O 12. Nd2 f5 13. exf5 Bxf5 14. Ne4 Nf4 15. g3 (15. c4 $17 {might work better.}) 15... Ne6 (15... Nh3+ $19 {is more deadly.} 16. Kg2 g4) 16. Ng2 $17 d5 17. Nd2 Qd6 18. Qh5 Bg6 19. Qe2 Rae8 20. Rae1 {[%cal Rb2e5]} Nd4 21. Bxd4 cxd4 ({Don't take} 21... exd4 22. Qg4 $15) 22. h4 h6 (22... Qc5 $17 23. Rc1 e4 24. dxe4 h6) 23. hxg5 $1 $11 hxg5 24. Qg4 Qf6 25. f4 gxf4 {Threatens to win with ...Qf5.} 26. gxf4 e4 (26... Bf5 $5 {[%cal Rf5g4]} 27. fxe5 Bxg4 28. exf6 Rxe1 29. Nxe1 Rxf6 30. Rxf6 Bxf6 $17) 27. Nh4 Bh7 {Hoping for ...e3.} 28. dxe4 Bxe4 29. Nxe4 Rxe4 30. Ng6 {Strongly threatening Rxe4.} Rfe8 31. Rxe4 Rxe4 32. Rf2 Qe6 33. Qxe6+ Rxe6 {[%mdl 4096] Endgame KRB-KRN} 34. f5 Re1+ 35. Kg2 Kf7 36. Nf4 Re4 37. Ne6 Kf6 38. a3 Bh6 39. b4 Be3 40. Rf3 Rg4+ 41. Kh3 Rg1 42. Nc5 Rh1+ 43. Kg4 Rh7 44. Kg3 Rg7+ 45. Kh2 Rh7+ 46. Kg2 Rg7+ (46... Bc1 {is more complex.} 47. Kg3 Bd2 48. Ne6 Be1+ 49. Kg2 Bc3) 47. Rg3 Rxg3+ 48. Kxg3 Kxf5 {KB-KN} 49. Kf3 Bc1 50. a4 Bd2 51. Nb3 Bc3 52. b5 cxb5 53. axb5 {[#]} d3 $1 {[%mdl 512]} 54. cxd3 Ke5 55. Ke2 Kd6 56. Kf3 Be5 57. Kg4 Kc7 58. Nc5 Ba1 {...Kb6! is the strong threat.} (58... Bh8 $5 59. Na4 $8 Bd4 $11) 59. Na4 Bd4 60. Kf5 Kd6 61. Kf4 Ke6 62. Kf3 Ke5 (62... Kf5 $5) 63. Kg3 {[#]} (63. Ke2 $1 $11) 63... Bb6 $1 $17 {And now ...Kd4 would win.} 64. Kf3 {[#]} Kd4 $1 {[%cal Rd4d3]} 65. Ke2 Ba5 66. Nb2 Kc5 67. Ke3 $2 {[%mdl 8192]} (67. Nd1 $17) 67... Kxb5 $19 68. Kd4 Kc6 69. Na4 Bb4 {Black mates.} 70. Nb2 a5 71. Ke3 Bc3 72. Na4 d4+ 73. Ke2 Ba1 {Accuracy: White = 81%, Black = 90%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.14"]
[Round "7.5"]
[White "Harika, Dronavalli"]
[Black "Yip, Carissa"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2518"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,86,27,39,31,36,-14,-1,-3,25,-34,-34,-35,-33,-47,-43,-43,4,-19,0,0,0,-25,-31,-41,12,-20,0,-31,0,0,0,0,0,-3,-10,-8,-8,0,0,-17,-17,-17,-17,-17,-17,-8,-8,-14,-16,-50,0,0,0,0,0,0,0,-2,11,7,20,11,16,0,0,0,13,0,0,0,26]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Bf5 7. Nh4 Bc8 8. O-O c6 9. Nf3 Bf5 {9...a5 is a critical line.} 10. Ng5 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} e5 11. e4 Bg4 12. f3 {[#] Threatens to win with dxe5.} Bd7 $146 ({Predecessor:} 12... exd4 13. Qxd4 Nd5 14. Qd3 Nxc3 15. bxc3 Bc8 16. Bf4 Be5 17. Be3 Qa5 18. Rfc1 Rd8 19. f4 Bf6 20. Nf3 Na6 {0-1 (47) Wiechert,H (2177)-Adler,J (2244) Baden 2018}) 13. Nh3 (13. dxe5 $11 dxe5 14. Qe2) 13... exd4 $15 14. Qxd4 Nd5 15. Qd3 Nxc3 16. bxc3 Qf6 17. Rb1 Qxc3 18. Qxc3 Bxc3 19. Rxb7 Bd4+ 20. Kh1 Be6 (20... Bc8 $15 21. Rb3 Be6) 21. Bf4 Rd8 22. Rc1 Bc8 23. Rb3 Na6 24. Rd1 c5 25. Bg5 f6 26. Be3 Bxe3 27. Rxe3 Be6 28. Rc3 Nb4 29. Rd2 Rab8 30. Nf4 Kf7 31. Nxe6 Kxe6 32. f4 Nc6 {[#] Strongly threatening ...Rb1+.} 33. h4 Rb1+ 34. Kh2 {The position is equal.} Nd4 35. Ra3 Rd7 36. Bh3+ f5 37. Bg2 Re1 38. exf5+ gxf5 39. Bd5+ Kf6 40. Kg2 Rb1 41. Ra6 Ke7 42. Kf2 Kd8 43. Kg2 Kc8 {Accuracy: White = 81%, Black = 80%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.15"]
[Round "8.1"]
[White "Ju, Wenjun"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2583"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,114,22,37,8,32,27,31,30,28,18,22,23,25,14,30,-11,-5,-4,-6,-40,-41,-18,0,-16,0,-14,22,0,35,36,84,85,83,73,56,62,62,0,7,-7,-7,0,-4,-28,-11,-103,-2,-22,0,-39,-49,-54,-55,-124,-124,-125,-125,-132,-81,-325,-271,-267,-254,-462,-354,-710,-700,-686,-385,-1579,-1602,-1490,-1449,-1325,-1307,-1198,-1187,-29980,-29981,-29981,-29982,-29982,-29983,-29979,-29980,-29984,-29985,-29985,-29986,-29986,-29986,-29986,-29984,-29984,-29985,-29985,-29981,-29969,-1970,-29988,-29987,-29989,-29988,-29988,-29989,-29989,-29990]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 g6 5. d4 exd4 6. c3 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann.} Bg7 7. cxd4 b5 8. Bb3 {White is slightly better.} Nge7 9. d5 Na5 10. Bd2 Nxb3 ({Of course not} 10... Bxb2 $6 11. Bxa5 Bxa1 12. Nc3 $16) 11. Qxb3 c5 12. Bc3 (12. dxc6 $5 dxc6 13. Bc3 $11) 12... f6 $1 13. a3 d6 {[#]} 14. h4 $146 ({Predecessor:} 14. Nbd2 O-O 15. O-O Bd7 16. Qc2 Rc8 17. b3 Qb6 18. Rfe1 Rce8 19. Qb2 a5 20. Qc2 {1-0 (69) Macovei,A (2369)-Shevchenko,K (2549) Sovata 2018}) 14... O-O 15. Nbd2 Qe8 {White should prevent ...a5.} 16. O-O Bd7 17. Qc2 Rc8 18. b3 h6 19. a4 Ra8 20. axb5 axb5 21. Rxa8 Qxa8 22. Ra1 Qb7 23. Qa2 (23. b4 $14) 23... Nc8 $11 (23... b4 $5 24. Bb2 $8 Bb5 $11) 24. Ne1 b4 25. Bb2 Bb5 26. Nc2 Bd3 27. Ne3 (27. Ne1 $1 $11 {remains equal.} Be2 28. g3) 27... Qe7 (27... f5 $1 $17 28. exf5 gxf5) 28. Re1 Nb6 $36 {[%mdl 2048] Strongly threatening ...Ra8. Black is pushing.} 29. Qa1 (29. Qa5 $5 {[%cal Ra5b6]} Qb7 30. Qa1 $15) 29... Ra8 30. Qc1 h5 31. Nec4 (31. Ndf1 $15) 31... Nxc4 $17 32. Nxc4 Ra2 33. g3 Kh7 ({Black should try} 33... Qd7 $1 {White must now prevent ...Kh7.} 34. Ba1 Qa7) 34. Nd2 $2 (34. Re3 $17 Bxc4 35. bxc4) 34... Bh6 $19 35. f4 {[#]} Qa7 $1 {aiming for ...c4+.} 36. Nc4 $2 (36. Nf3 {was the only defense.}) 36... Qd7 {And now ...Qh3 would win.} 37. Re3 $2 (37. Rd1 Bxc4 38. bxc4) 37... Bxc4 38. bxc4 Qg4 {( -> ...Bxf4)} ({Weaker is} 38... Qh3 39. Rb3 $17) 39. Kh1 $2 {[#]} (39. Rd3 f5 40. e5) 39... Bxf4 $1 {[%mdl 576] Deflection} 40. gxf4 Qxh4+ 41. Kg1 Qg4+ 42. Kh1 Qxf4 43. Qb1 Rxb2 44. Qxb2 Qxe3 45. Qxf6 Qxe4+ {[%mdl 4160] Endgame Double Attack. KQ-KQ} 46. Kh2 b3 47. Qf7+ Kh6 48. Qf8+ Kg5 49. Qd8+ Kf5 50. Qd7+ Ke5 51. Qg7+ {[#]} Kf4 $1 52. Qf6+ Kg4 53. Qe6+ Qf5 (53... Kf3 $142 54. Qh3+ Ke2 55. Qxb3 Qf4+ 56. Kg2 Qf2+ 57. Kh3 Qe3+ 58. Qxe3+ Kxe3 59. Kg3 g5 60. Kg2 h4 61. Kh2 g4 62. Kg2 Kf4 63. Kg1 Kf3 64. Kf1 g3 65. Ke1 g2 66. Kd1 g1=Q+ 67. Kd2 h3 68. Kc3 Qb1 69. Kd2 h2 70. Kc3 h1=Q 71. Kd2 Qhe1#) 54. Qxd6 Qf2+ {Black mates.} 55. Kh1 Qf3+ 56. Kh2 Qh3+ 57. Kg1 Qg3+ {Accuracy: White = 55%, Black = 79%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.15"]
[Round "8.2"]
[White "Koneru, Humpy"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2580"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,69,22,31,33,139,143,153,156,157,156,364,365,354,354,352,353,360,285,457,319,322,289,275,195,356,358,350,341,702,695,676,675,627,487,1584,1575,1519,1494,5561,5499,5481,760,3158,741,945,840]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. O-O a6 10. e4 c5 11. d5 c4 12. Bc2 Qc7 13. dxe6 fxe6 14. Ng5 {D48: Semi-Slav: Meran System: 7...b5 8 Bd3 a6.} Qc6 {[#]} ({Better is} 14... Nc5 $1 $14) 15. Qf3 $1 $16 h6 16. Qh3 {White is clearly better.} hxg5 17. Qxh8 {[#]} Ne5 $146 (17... g4 $16 {was called for.} 18. Bg5 O-O-O) ({Predecessor:} 17... g4 18. Bg5 Kf7 19. Qh4 Bd6 20. Rad1 Qc7 21. Rfe1 Be5 22. Rxd7+ Qxd7 23. Bxf6 Bxf6 {1-0 (30) Maksimenko,A (2475)-Bjerring,K (2345) Copenhagen 1994}) 18. Bxg5 $18 Nf7 19. Qh4 Be7 20. Rad1 Qc5 21. e5 Nxe5 $2 (21... Qxe5 {is a better defense.} 22. Bf4 Qc5) 22. Bxf6 Bxf6 23. Qh5+ Ke7 {[#] Threatens to win with ...Nf3+!} 24. Be4 Bc6 $2 (24... Nd3 25. Qxc5+ Nxc5) 25. Bxc6 Qxc6 26. Rfe1 Nd3 $2 (26... Nf7 27. Nd5+ Kf8) 27. Nd5+ {White is clearly winning.} Kf8 28. Nxf6 gxf6 29. Qh8+ Kf7 (29... Ke7 $142 30. Qh7+ Kd6) 30. Qh7+ Ke8 31. Re3 Nf4 32. Qg8+ Ke7 33. Qg7+ Ke8 34. Rd4 (34. Rf3 $142 Qe4 35. Qxf6) 34... c3 35. bxc3 {Accuracy: White = 70%, Black = 38%.} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.15"]
[Round "8.3"]
[White "Muzychuk, Mariya"]
[Black "Harika, Dronavalli"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2552"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,115,21,35,0,15,1,19,0,8,0,29,27,27,27,27,27,20,21,23,14,25,11,20,8,16,8,8,8,20,13,15,10,12,12,14,10,16,10,6,4,4,0,5,0,0,0,0,-39,0,0,0,0,0,0,56,72,81,60,71,94,57,10,10,10,9,9,45,45,45,45,45,47,135,30,57,8,8,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 Nfd7 8. g5 b5 9. Bg2 Bb7 10. h4 {B81: Sicilian Scheveningen: Keres Attack.} Nc6 {[#]} 11. Nxc6 $146 ({Predecessor:} 11. Nce2 Nxd4 12. Nxd4 Be7 13. Qe2 Rc8 14. O-O g6 15. Rd1 Qc7 16. c3 O-O 17. h5 {½-½ (62) Deac,B (2385)-Ghaem Maghami,E (2559) Doha 2014}) 11... Bxc6 12. Ne2 Nc5 13. Ng3 d5 14. exd5 Bxd5 15. Bxd5 Qxd5 16. Qxd5 exd5 17. Be3 O-O-O 18. O-O-O Ne6 19. Nf5 h6 20. f4 g6 21. Nxh6 Bxh6 22. gxh6 f5 23. h5 Rxh6 24. hxg6 Rxg6 25. Rh5 d4 26. Bd2 Rd5 27. Rdh1 Kb7 28. Rh7+ Kc6 29. Ra7 Kb6 30. Re7 Nc5 31. b4 Ne4 32. Be1 Rd8 33. Rh5 Rg1 34. Kd1 Nc3+ 35. Kd2 {[#] White threatens Rh6+ and mate.} Ne4+ ({Better is} 35... Rd6 $11 36. Rxf5 Nd5) 36. Ke2 $1 $14 Rg2+ 37. Kd3 Nd6 38. Rh6 Kc6 39. Bh4 {Threatens to win with Ree6.} Rd7 40. Bf6 Rg3+ $1 41. Kxd4 {Hoping for Rxd7.} Nf7+ 42. Rxd7 Kxd7 {[%mdl 4096] Endgame KRB-KRN} 43. Rh2 Ke6 $1 {[%cal Re6f6]} 44. Bh4 Rf3 {[#]} (44... Rg4 $14) 45. Bg5 ({White should play} 45. Rf2 $1 $16 {[%cal Rf2f3]} Rxf2 46. Bxf2) 45... Kd6 $1 $11 46. c3 Rf1 {The position is equal.} 47. Rh7 Rd1+ 48. Ke3 Ke6 49. Rg7 Nd6 50. Re7+ Kd5 51. Re5+ Kc6 52. Rc5+ Kd7 53. a3 Ra1 54. Bf6 Nc4+ 55. Kf3 Ra2 56. Bd4 Nd2+ 57. Ke3 Nc4+ 58. Kf3 {Accuracy: White = 85%, Black = 85%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.15"]
[Round "8.4"]
[White "Dzagnidze, Nana"]
[Black "Kosteniuk, Alexandra"]
[Result "0-1"]
[ECO "E21"]
[WhiteElo "2515"]
[BlackElo "2504"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,136,-2,-5,17,0,0,0,3,0,0,-10,0,-10,-8,-8,-8,-6,0,-14,0,-12,-8,-4,0,0,0,0,0,0,3,0,0,0,39,34,44,48,31,49,40,19,64,58,62,64,67,4,12,14,40,0,0,0,0,-6,-3,-42,-50,-57,-62,-56,-62,-52,-29,-27,0,-28,-23,-64,-59,-129,-122,-153,-158,-161,-162,-422,-414,-391,-383,-397,-397,-352,-346,-1406,-1235,-1162,-609,-552,-481,-1495,-843,-4844,-4818,-29959,-29961,-29953,-29962,-29975,-29976,-29976,-29977,-29976,-29978,-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29986,-29987,-29987,-29988,-29989,-29990,-29990,-29991]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 O-O 5. Nf3 b6 6. e3 c5 {E21: Nimzo-Indian: 4 Nf3.} 7. a3 Bxc3 8. Bxc3 Ne4 {The position is equal.} 9. Rc1 Bb7 10. Be2 d6 11. O-O Nxc3 12. Rxc3 Qe7 13. b4 Nd7 14. Nd2 {[#]} a5 $146 ({Predecessor:} 14... e5 15. d5 f5 16. e4 f4 17. Bg4 Rf6 18. Rh3 Nf8 19. Nf3 g6 20. Ng5 h5 {0-1 (32) Cavusoglu,Y-Navabi,S (2007) Golden Sands 2000}) 15. Bf3 axb4 16. axb4 cxb4 17. Rb3 d5 18. cxd5 Bxd5 19. Bxd5 exd5 20. Rb2 Ra3 21. Qe2 f5 22. Qb5 Ra5 23. Qc6 f4 24. exf4 Rxf4 25. Nb3 Ra3 26. Qxd5+ Qf7 27. Qd6 $1 Ra4 28. Re1 (28. Qc6 $14 Ra3 29. Qd6) 28... Rf6 $11 29. Qc7 Nf8 (29... Re6 {seems wilder.} 30. Qc8+ Nf8 31. Rd1 Re8 32. Qc2 Ne6) 30. Qxf7+ (30. Qc2 {with more complications.} Qd5 31. Nc5 Ra3 32. Ne4 Rc6 33. Qb1) 30... Kxf7 31. Nd2 Rd6 32. Nf3 Ne6 33. Rd1 {[#]} Nxd4 $1 {[%mdl 512]} 34. Kf1 (34. Rxd4 Ra1+) 34... Nb5 $1 35. Rdb1 Nc3 36. Rxb4 Rxb4 (36... b5 {looks sharper.} 37. Rxa4 bxa4 38. Rc1 Nb5 39. Ng5+ Kg6) 37. Rxb4 $15 {[%mdl 4096] Endgame KRN-KRN} Rd1+ 38. Ne1 b5 39. Rb3 Rc1 40. g3 ({White should try} 40. Ra3 $15) 40... Ke6 $17 41. Kg2 Rxe1 42. Rxc3 {KR-KR} Kd6 $1 43. Rc8 $2 {[#]} (43. Rd3+ {was worth a try.} Kc6 44. Rd8) 43... Re7 $1 $19 44. Rb8 Kc5 45. f4 b4 46. Kf3 Kc4 47. Rc8+ $2 (47. h4) 47... Kd3 48. Rd8+ Kc3 49. Rc8+ Kb2 50. f5 (50. Rh8 $142) 50... b3 51. g4 Ra7 52. g5 Ka2 {Black mates.} 53. Ke4 b2 54. Rb8 b1=Q+ 55. Rxb1 Kxb1 {KR-K3P} 56. f6 g6 57. Ke5 {[#]} Ra5+ $1 58. Ke6 Rxg5 {KR-KPP} 59. f7 Rf5 60. h4 Rf4 61. Ke7 h6 62. f8=Q Rxf8 63. Kxf8 {KPP-KP} g5 64. h5 g4 65. Kg7 g3 66. Kxh6 g2 67. Kh7 g1=Q 68. h6 Qg5 {Accuracy: White = 59%, Black = 92%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.15"]
[Round "8.5"]
[White "Lagno, Kateryna"]
[Black "Krush, Irina"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2552"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "156"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,156,40,41,47,25,27,24,26,25,25,28,34,0,8,-36,-35,-33,0,0,0,0,3,-12,23,29,31,25,28,27,50,47,33,39,37,-16,-12,-104,-81,-76,-58,-41,-33,-49,-31,-83,-81,-366,-364,-359,-337,-358,-365,-366,-362,-369,-354,-365,-309,-402,-386,-396,-383,-403,-396,-410,-421,-499,-490,-545,-544,-486,-136,-136,-136,-136,-136,-136,-136,-136,-136,-136,-136,-136,-89,-89,-89,-89,-89,-89,-89,-89,-89,-121,-130,-154,-154,-167,-167,-167,-167,-167,-167,-167,-167,-167,-167,-167,-121,-152,-152,-152,-120,-120,-120,-152,-71,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,0,-120,-77,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. a3 Be7 8. Be3 Qc7 9. f4 d6 {B33: Sicilian: Pelikan and Sveshnikov Variations.} 10. Bd3 a6 11. Na4 Nd7 {White has an edge.} 12. c4 b6 13. O-O Nc5 14. Nbxc5 (14. Nc3 {is interesting.} O-O 15. Bc2 Bf6 16. Nd4 Bb7 17. Nde2) 14... bxc5 {[#]} 15. f5 $146 ({Predecessor:} 15. Qg4 O-O 16. f5 Ne5 17. Qg3 exf5 18. exf5 Bf6 19. Be4 Nxc4 20. Bh6 Be5 21. Qd3 {0-1 (37) Gardner,R-Starr,S Winnipeg 1994}) 15... Ne5 16. Nc3 Qd8 17. Be2 O-O 18. Qd2 Rb8 19. Rad1 Kh8 20. b4 cxb4 21. axb4 Rxb4 22. Nd5 Rb3 23. Nxe7 Qxe7 24. f6 gxf6 25. Bd4 (25. Bf2 $14) 25... Rg8 $11 26. Rb1 (26. Qc2 $11 {keeps the balance.} Rb4 27. Qc3) 26... Rxb1 $1 $17 27. Rxb1 Ng6 28. Rb6 e5 29. Be3 Rd8 30. Rb8 {[#]} (30. h3 $15) 30... Nf4 $1 {[%mdl 64] Deflection} 31. Bxf4 $2 {[%mdl 8192]} (31. Rb6 $17) 31... Qa7+ $19 {[%mdl 64] Double Attack} 32. Qe3 Qxb8 33. Bg3 Rg8 34. Qh6 Qb1+ 35. Bf1 Qb6+ $1 36. c5 {[#]} Qd8 $1 ({Stronger than} 36... Qxc5+ 37. Bf2 $11) ({Not} 36... dxc5 $2 37. Bh4 $18) 37. Bh4 Rg6 38. Qd2 Rg4 39. Bf2 Bb7 40. cxd6 Bxe4 41. Qe2 f5 42. Qxa6 Rg6 43. Bc5 Rxg2+ $2 (43... Qg5 $19 {has better winning chances.} 44. g3 f4 45. Qc8+ Rg8) 44. Bxg2 $17 {[#]} Qg5 $1 {[%csl Ge4][%cal Rg5g2]} 45. Qf1 Bxg2 46. h4 Bxf1+ 47. hxg5 {[%mdl 4096] Endgame KB-KB} Bb5 {And now ...Kg7 would win.} 48. d7 Bxd7 49. Bd6 Kg7 50. Bxe5+ Kg6 51. Kf2 Kxg5 {...f4 is the strong threat.} 52. Kg3 Ba4 53. Bf4+ Kf6 54. Kf2 h5 55. Ke3 h4 56. Bc7 Kg5 57. Bd6 Kg4 58. Bc7 Kh3 59. Kf2 Bc6 60. Bd6 Kg4 61. Ke3 Kg5 62. Be7+ f6 {aiming for ...f4+.} 63. Bd6 Kg6 64. Bb8 h3 65. Bc7 {intending Kf2.} Kf7 (65... Kg5 $142 66. Bf4+ Kg4) 66. Kd4 Ke6 67. Bf4 Kd7 68. Kc5 Be4 69. Bh2 Bb7 70. Bf4 Bg2 71. Bh2 Ke6 72. Kd4 Kd7 73. Kc5 $1 Kc8 {Black is better.} 74. Kb6 Be4 75. Bf4 Bf3 76. Bh2 Kd7 77. Kc5 Ke6 {Hoping for ...f4!} 78. Kd4 Be4 {Accuracy: White = 74%, Black = 84%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.16"]
[Round "9.1"]
[White "Harika, Dronavalli"]
[Black "Koneru, Humpy"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2518"]
[BlackElo "2580"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,57,16,37,30,29,35,34,35,41,36,49,33,45,37,39,42,57,33,31,30,31,0,30,30,55,41,38,0,53,0,39,0]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. Bg5 c6 11. Qf3 h6 12. Bxf6 Qxf6 13. Qxf6 gxf6 14. Ne2 Bd6 15. Nd4 {C47: Scotch Four Knights and Four Knights with 4 g3.} c5 16. Nf5 Bxf5 17. Bxf5 Rfe8 18. Rad1 d4 19. Rfe1 Re5 20. Bd3 Rae8 21. Kf1 Kg7 22. Re2 Bc7 {[#]} 23. Rde1 $146 ({Predecessor:} 23. g3 Rb8 24. Rb1 Ba5 25. f4 Rxe2 26. Kxe2 Bc3 27. b3 Re8+ 28. Kf2 Re3 {½-½ (30) Macias Murillo,B (2382)-Matamoros Franco,C (2548) Quito 2012}) 23... Ba5 24. Rd1 R8e7 (24... Bc7 {looks sharper.}) 25. g3 Bc7 26. Rde1 Ba5 27. Rd1 Bc7 28. Rde1 Ba5 $1 {[%cal Ra5e1]} 29. Rd1 {Accuracy: White = 84%, Black = 87%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.16"]
[Round "9.2"]
[White "Kosteniuk, Alexandra"]
[Black "Ju, Wenjun"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2504"]
[BlackElo "2583"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,112,22,16,30,14,24,16,18,1,28,0,8,-10,-16,-41,-37,-58,-19,-19,-13,-39,-27,-66,-61,-62,-58,-58,-45,-66,-45,-37,0,0,0,0,0,-33,-30,-31,-31,-100,-92,-250,-259,-263,-265,-237,-238,-238,-48,-283,-287,-272,-280,-269,-272,-269,-280,-253,-276,-475,-475,-463,-476,-446,-393,-494,-443,-531,-541,-531,-533,-444,-414,-516,-510,-539,-517,-511,-515,-552,-482,-478,-463,-533,-269,-166,-185,-1449,-1327,-1317,-1388,-1387,-1312,-1118,-1110]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ {9.h3 is becoming the main line.} Ke8 10. Nc3 Bd7 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. b3 Be7 12. Bb2 Rd8 {[#] The position is equal.} 13. Ne4 $146 ({Predecessor:} 13. h3 h5 14. Kf1 b6 15. a4 a5 16. Ne2 c5 17. Nc3 Bc6 18. Nb5 Rxd1+ 19. Rxd1 {1-0 (55) Savchenko,B (2630)-Romanov,E (2624) Taganrog 2011}) 13... h5 14. Rd2 Bc8 15. Re2 c5 16. Rae1 Rh6 17. c4 Kf8 (17... Ra6 {with more complications.} 18. Nc3 c6 19. Bc1 Nd4 20. Rb2 Bf5) 18. Rd2 Rxd2 19. Nexd2 Ra6 20. a4 g5 {Strongly threatening ...g4.} 21. Ne4 g4 22. Nfd2 Nd4 23. Nc3 c6 24. Nce4 b5 25. Nd6 Be6 26. cxb5 cxb5 27. axb5 Ra2 28. Bxd4 cxd4 29. N2c4 (29. Rd1 $1 $15) 29... h4 $17 30. Kf1 $2 (30. Rd1 $17) 30... h3 $19 31. gxh3 gxh3 32. Re2 Ra1+ 33. Re1 Rxe1+ $1 34. Kxe1 {[%mdl 4096] Endgame [#] KBB-KNN} Bg5 $1 35. Ne4 Bf4 36. Ng3 {[#] intending Ke2.} d3 $1 37. Nf1 Ke8 38. Nb2 Bf5 ({Not} 38... Bxe5 39. Nxd3 Bd6 40. Kd2 $17) 39. Ng3 $2 (39. Nc4 {is a better defense.} Kd7 40. Ng3) 39... d2+ 40. Kd1 Bg4+ 41. Kc2 Bxe5 42. Nd1 Bf4 43. Nf1 Be2 44. Ng3 Bf3 45. Nf1 Be4+ 46. Kc3 Bg2 47. Ng3 Bf3 48. Kc2 Kd7 49. Nc3 Kc7 50. Nf1 Kb7 51. b4 Kb6 52. Nxd2 Bg2 53. Nde4 $2 (53. Nf1) 53... Bxh2 {Black is clearly winning.} 54. Nd5+ Kxb5 55. Nec3+ Kc6 56. b5+ Kb7 {Accuracy: White = 61%, Black = 87%.} 0-1

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.16"]
[Round "9.3"]
[White "Yip, Carissa"]
[Black "Muzychuk, Mariya"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "2412"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,61,1,13,12,1,6,12,6,0,0,0,0,0,0,-21,10,8,14,18,23,26,12,18,31,0,24,8,18,4,4,3,20,0,12,0,0,0]} 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. O-O-O Be7 13. Ne4 Nxe4 14. Qxe4 Nf6 {B19: Classical Caro-Kann: 4...Bf5 main line.} 15. Qd3 c5 16. Qb5+ Qd7 {[#]} 17. Qe2 $146 ({Predecessor:} 17. Qxd7+ Nxd7 18. Be3 cxd4 19. Bxd4 Bf6 20. Be3 Rc8 21. Rd2 Nc5 22. Rhd1 O-O 23. g4 {½-½ (36) Huschenbeth,N (2628)-Piorun,K (2623) Germany 2019}) 17... cxd4 {[#]} 18. Bc3 $1 {[%mdl 512]} O-O {...Qa4 is the strong threat.} (18... dxc3 19. Rxd7) 19. Bxd4 Qc6 20. Ne5 Qe4 21. Qxe4 Nxe4 22. c3 Rfd8 23. Rhe1 Nf6 24. g4 Nd5 25. Kb1 Bf6 26. Nf3 Rac8 {The position is equal.} 27. Bxf6 Nxf6 28. Ne5 Kf8 29. f3 Ke7 30. c4 Nd7 31. Nxd7 {Accuracy: White = 92%, Black = 91%.} 1/2-1/2

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.16"]
[Round "9.4"]
[White "Krush, Irina"]
[Black "Dzagnidze, Nana"]
[Result "1-0"]
[ECO "A73"]
[WhiteElo "2422"]
[BlackElo "2515"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,73,70,74,85,53,69,60,70,67,58,72,95,83,120,125,109,97,112,117,162,142,247,221,218,173,230,165,246,176,355,337,323,336,1038,1042,1012,1049,1016,968,1924,1706,29992,29988,29991,2766,2287,2316,29986,29987,29982,3464,2732,2514,29987,29988,29993,29989]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Na6 10. Bf4 Nc7 {A73: Modern Benoni: Classical: Unusual Black 9th moves.} 11. Nd2 Nfe8 12. a4 f5 {White is slightly better.} 13. exf5 Bxf5 14. Bg3 {[#]} h5 $146 ({Predecessor:} 14... Bd4 15. Nc4 Qf6 16. Qd2 a6 17. Nb6 Rb8 18. Rae1 Na8 19. Nc4 Nac7 20. Bf3 b5 {0-1 (41) Plachetka,J (2470)-Horvath,C (2450) Stary Smokovec 1991}) 15. h3 Bd4 16. Nf3 Bf6 17. Bd3 Ng7 18. Ne4 Be7 19. Re1 h4 (19... Bxe4 $16 {keeps fighting.} 20. Bxe4 Nf5) 20. Bh2 $18 b6 21. Ra3 {[%cal Ba1a3,Ba3e3,Be3e2,Be2e4,Be4h4,Bh4g4,Bg4g6][%mdl 32]} Rb8 (21... Qd7 $142 22. Bc4 Bxe4 23. Rxe4 Nf5) 22. Bb1 Nh5 (22... Qd7 {was necessary.} 23. Qd2 Nh5) 23. Qd2 Kg7 $2 (23... Qd7 {is a better defense.} 24. a5 Rfe8) 24. Rae3 Rf7 25. R3e2 Bxe4 $2 (25... Rc8 26. Neg5 Bxg5 27. Nxg5 Bxb1 28. Nxf7 (28. Rxb1 Rf5 $18) 28... Kxf7 29. Rxb1 Nf6) 26. Rxe4 Nf6 27. Rxh4 {Intending Qh6+ and mate.} Ng8 28. Rg4 Rxf3 29. Rxg6+ Kh8 30. gxf3 Qf8 {[#]} 31. Qc3+ (31. Rxe7 $142 $1 Qxe7 32. Bxd6 Qxd6 33. Rxd6 Ne8 34. Rd7 Rb7 35. Rxb7 Nef6 36. Qg5 Nd7 37. Rxd7 Ne7 38. Qf6+ Kg8 39. Rd8#) 31... Bf6 32. Qd3 Re8 33. Rxe8 Nxe8 {[#]} 34. Bf4 {Played: Qd3-f5} 1-0

[Event "2nd Cairns Cup 2020"]
[Site "Saint Louis"]
[Date "2020.02.16"]
[Round "9.5"]
[White "Gunina, Valentina"]
[Black "Lagno, Kateryna"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2461"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2020.02.07"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,147,0,5,-19,-8,-16,0,0,-2,-6,0,-7,-12,-8,-8,-14,0,0,6,0,0,0,0,-22,10,0,50,0,0,0,0,0,0,0,27,17,80,50,109,105,106,51,39,37,47,31,31,29,75,85,148,0,0,0,59,66,62,83,83,78,435,508,5218,5210,1854,361,301,317,459,447,331,53,53,53,53,53,53,53,53,53,53,53,53,53,53,11,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 a6 6. a3 h6 7. h3 d6 8. Nh2 {C50: Hungarian Defence and Giuoco Pianissimo.} Nd4 {[#]} 9. Be3 $146 ({Predecessor:} 9. f4 exf4 10. Bxf4 Nh7 11. Kd2 Qh4 12. Nd5 Ne6 13. Rf1 c6 14. Nb6 Nxf4 15. Nxa8 O-O {0-1 (54) Adamek,S (1592)-Janku,V (1670) Ostrava 2003}) 9... Be6 (9... O-O {looks sharper.} 10. Ng4 c6 11. Nxf6+ Qxf6 12. O-O Qg6) 10. Bxe6 Nxe6 11. Bxc5 dxc5 12. Ng4 Nxg4 13. hxg4 c6 14. Qd2 b5 15. Ne2 Qd6 16. g5 {[%cal Rg5h6]} h5 17. O-O-O O-O-O 18. g3 Kb7 19. f4 Rd7 20. Rhf1 (20. f5 $5 {[%cal Rf5e6]} Nc7 21. Kb1 $14) 20... Rhd8 21. fxe5 Qxe5 22. Rf5 Qc7 23. Nf4 $1 c4 (23... Qd6 {feels hotter.} 24. c3 Nxf4 25. Qxf4 Qxf4+ 26. gxf4 Kb6) 24. Rxf7 $1 Nxg5 (24... Nxf4 $1 $11 25. Rxd7 (25. Rxf4 cxd3 26. Qe3 dxc2 $15) 25... Nxd3+ 26. Qxd3 cxd3 27. Rxc7+ Kxc7) 25. Rxd7 $16 Rxd7 ({Black should try} 25... Qxd7 $14 26. Qe3 (26. Nxh5 Qg4 $11) 26... Qg4) 26. Qe2 cxd3 27. cxd3 (27. Nxd3 $16 Ne6 28. e5 (28. Qxh5 Qxg3 29. Kb1 Re7 $14)) 27... Qb6 $14 28. Kb1 Qd4 29. Rc1 g6 $1 30. e5 Re7 31. Qc2 Rc7 (31... Qd7 $142) 32. Nxg6 (32. e6 $1 $16 {[%cal Re6e7]} Qd8 33. Qf2) 32... Ne6 $11 33. Rf1 Qd5 (33... Qe3 $11) 34. Qe2 $36 {[%mdl 2048] White has some pressure.} Rg7 35. Nf4 Nxf4 36. gxf4 $16 {[%mdl 4096] Endgame KQR-KQR} Rg2 $2 {[%mdl 8192]} (36... h4 $16 {is more resistant.}) 37. Qe4 $18 h4 (37... Qxe4 $142 38. dxe4 Kc7) 38. Qxd5 cxd5 {KR-KR} 39. Rh1 $2 (39. f5 {Threatens to win with f6.} h3 40. f6) 39... Rg4 {[#]} 40. f5 $1 Rf4 (40... Kc7 {might work better.} 41. f6 Rf4) 41. f6 Kc7 {[#]} 42. Rg1 $2 (42. d4 $1 $18) 42... d4 $1 $14 43. Rg6 Kd7 44. f7 $1 {White wants to mate with Rf6.} Ke7 $1 {[%cal Re7f7]} 45. e6 $1 h3 46. Rh6 h2 47. Rxh2 {aiming for Rh8.} Kxe6 48. Rh6+ Kd5 $1 49. Rxa6 {And now Ra7 would win.} (49. Rh5+ {keeps more tension.} Kd6 50. Rh4 Rf1+ 51. Kc2 Rxf7 52. Rxd4+ Kc6 53. Kc3) 49... Rxf7 {The position is equal.} 50. Rh6 Rf3 51. Kc2 Rf2+ 52. Kb3 Rd2 53. Rh5+ Kc6 54. Rg5 Rxd3+ 55. Kb4 {Strongly threatening Rc5+.} Rd2 56. Rc5+ Kd6 57. b3 d3 58. Rc8 Kd5 59. Rd8+ Ke4 60. Kxb5 Ra2 61. a4 d2 62. a5 Ke3 63. a6 Ra1 64. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} d1=Q 65. Rxd1 Rxd1 $11 {KR-KPP} 66. Kc5 Ra1 67. b5 Kd3 68. Kd5 Ra5 69. Kc5 Kc3 70. Kb6 Kb4 71. a7 Rxb5+ 72. Kc6 Ra5 73. Kb7 {[#]} Rxa7+ $1 {[%mdl 512]} 74. Kxa7 {Accuracy: White = 84%, Black = 76%.} 1/2-1/2

