[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.1"]
[White "Mundayat, Abinav"]
[Black "Prasanna Raghuram Rao"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "1941"]
[BlackElo "2435"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,72,0,12,-8,36,-9,0,3,20,27,22,0,5,0,12,10,21,0,0,-3,-6,-4,0,0,-8,-37,-36,-113,-64,-83,0,-54,-54,-50,-34,-83,-57,-79,-62,-94,-66,-95,-96,-210,-96,-106,-1,-54,0,0,6,0,0,-54,-35,-451,-457,-439,-435,-389,-381]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. O-O d6 8. c3 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Bb6 9. Re1 {is more profitable than 9.a4 at the moment.} h6 10. a4 {The position is equal.} Rb8 11. axb5 axb5 12. h3 O-O 13. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3d5][%mdl 32]} Nh5 14. Nf1 Qf6 {[#]} 15. Ne3 $146 ({Predecessor:} 15. Be3 Nf4 16. Ng3 g6 17. d4 h5 18. Nf1 Re8 19. Bxf4 Qxf4 20. Qd3 exd4 21. cxd4 {1-0 (27) Amonatov,F (2625)-Musakaev,E (2365) Moscow 2013}) 15... Nf4 16. Nd5 Nxd5 17. exd5 Ne7 18. Be3 Bxe3 19. Rxe3 Bb7 20. c4 (20. d4 $1 $15) 20... c5 21. Nd2 {With the idea Ne4.} Ng6 (21... Nf5 $17 {Strongly threatening ...bxc4.} 22. Rf3 Bc8) 22. Ne4 (22. cxb5 $11 Qd8 23. Ne4) 22... Qd8 $15 23. cxb5 f5 24. Nc3 Bc8 25. Re1 f4 {[#] White must now prevent ...f3!} 26. f3 Nh4 {aiming for ...Qg5!} 27. Ne4 Rxb5 28. Bc4 (28. Re2 $17) 28... Rb8 (28... Rxb2 $19 29. Re2 Rb4) 29. Qe2 Bf5 (29... Nf5 $17 30. Ra3 Ne3) 30. Qf2 (30. Ra6 $11 Bxe4 31. dxe4) 30... Bxe4 ({Better is} 30... Rb6 $1 $15) 31. dxe4 $11 Qg5 32. b3 Rf6 {And now ...Rg6 would win.} 33. Ra2 (33. Reb1 $11) 33... Rg6 $15 {Hoping for ...Qh5.} 34. Kh2 $2 {[%mdl 8192]} (34. Qf1 $15) 34... Qh5 $19 ({Don't do} 34... Qxg2+ 35. Qxg2 Rxg2+ 36. Rxg2 $19) 35. Rg1 {[#]} Rg3 $1 36. Qf1 Kh8 {[%mdl 64] Remove Defender.  Weighted Error Value: White=0.43/Black=0.21} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.2"]
[White "Liang, Jason"]
[Black "Johnson, Donald"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2351"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,118,12,9,0,19,10,25,14,17,14,17,15,29,15,21,26,6,12,20,21,72,74,112,114,110,104,254,225,436,436,443,452,431,404,327,316,327,318,307,148,148,148,148,148,178,170,161,174,188,175,199,185,195,193,192,178,191,200,287,291,307,279,380,379,360,364,396,410,454,454,537,538,837,788,778,730,2783,2816,29975,29976,29970,2743,29973,6605,29981,29982,29984,29985,29985,29986,29986,29987,29987,29988,29988,29989,29990,29991,29991,29992,29992,29991,29995,29996,29996,29997,29997,29998,29998,29999,29999]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. a4 Ngf6 5. Nc3 a6 6. Be2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} e6 7. O-O Be7 8. d4 {White has an edge.} cxd4 9. Qxd4 b6 10. Rd1 Qc7 11. Be3 Bb7 12. Nd2 O-O 13. Nc4 {[%cal Rc4d6]} d5 14. exd5 {[#]} Bc5 $146 {[#]} (14... Nxd5 $11 15. a5 (15. Nxd5 Bxd5 16. c3 Nc5 $11) 15... bxa5) ({Predecessor:} 14... Nxd5 15. Nxd5 Bxd5 16. Bf4 Qb7 17. Nd6 Bxd6 18. Bxd6 Rfc8 19. Ra3 Qc6 20. Rg3 g6 {1-0 (42) Carlsen,M (2863)-Wei,Y (2732) chess24.com INT 2020}) 15. d6 $1 $16 Bxd4 (15... Qc6 16. Bf3) 16. dxc7 Bxe3 17. fxe3 {a5 is the strong threat.} Rfc8 {A mistake that costs the game.} (17... Rac8 $16) 18. Nd6 Ra7 $2 (18... Rxc7 19. Nxb7 Rxb7) 19. Nxb7 $18 {[%mdl 64] Overworked Piece} ({Less strong is} 19. Nxc8 Bxc8 20. a5 bxa5 $18) 19... Rxb7 20. Bxa6 Rbxc7 21. Bxc8 Rxc8 22. Rd6 Kf8 23. Rad1 Ke7 24. Ne4 Nd5 $16 {[#]} 25. Rxd7+ $1 Kxd7 {[%mdl 4096] Endgame KRN-KRN} 26. Nc3 $1 {And now e4 would win.} Ke7 27. Nxd5+ exd5 $18 {KR-KR} 28. c3 ({Don't play} 28. Rxd5 Rxc2 29. Rb5 Rc6 $16) 28... Ke6 29. Rd4 Ke5 30. Kf2 Rc6 31. Rf4 f5 32. Rh4 h6 33. Rb4 Kd6 (33... h5 $142 34. Ke2 Rh6) 34. Rb5 Ke5 35. Ke2 Rg6 36. g3 Rc6 37. Kd3 Ke6 38. b3 Rd6 39. Kd4 g6 40. b4 g5 41. a5 bxa5 42. bxa5 Rd7 43. Rb6+ Kf7 44. a6 Rd8 45. Rxh6 (45. a7 $142 Ra8 46. Rxh6 Ke7 47. Kxd5 g4 48. Kc6 Rd8 49. Rh7+ Ke6 50. Kb7) 45... Rc8 46. a7 Rc4+ 47. Kxd5 {White mates.} Ra4 48. Rh8 Ra5+ 49. Kd4 Ra4+ 50. c4 f4 51. gxf4 gxf4 52. exf4 Ke6 53. a8=Q Rxa8 54. Rxa8 {KR-K} Kf5 55. Rf8+ Kg4 56. Ke4 Kh3 57. Kf3 {[%cal Rf8h8]} Kxh2 58. Rh8+ Kg1 59. Rh3 Kf1 60. Rh1# {Weighted Error Value: White=0.07/Black=0.60} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.3"]
[White "Huang, Evan"]
[Black "Paul, Justin"]
[Result "0-1"]
[ECO "A24"]
[WhiteElo "1896"]
[BlackElo "2249"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,98,30,28,50,43,79,5,7,14,45,-10,-18,-10,-12,-14,-14,-15,-20,-26,-19,-27,-9,-6,0,-7,0,-3,15,8,13,0,0,-22,-15,-20,-26,-19,-16,-66,0,0,0,0,0,-34,-36,-22,-35,-36,-17,-30,-30,-29,-31,-29,-29,-28,-26,-152,-162,-150,-151,-155,-79,-79,-79,-79,-83,-197,-183,-183,-183,-170,-155,-155,-155,-155,-155,-147,-154,-155,-109,-1173,-1161,-1294,-1272,-6075,-5471]} 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 e5 $1 {6...e5 is better than 6...Nc6.} 7. d4 Qe7 {A24: English Opening vs King's Indian: Lines without ...Nc6.} 8. Bg5 c6 9. dxe5 ({Better is} 9. Qd2 $16) 9... dxe5 $11 {The position is equal.} 10. Ne4 {[#]} Rd8 $146 ({Predecessor:} 10... Qe6 11. Nxf6+ Bxf6 12. Bxf6 Qxf6 13. Qc2 Na6 14. Rfd1 Bf5 15. Qc3 Rfe8 16. b4 Qe7 {0-1 (72) Botlhole,K (1728)-Wafa,S (2148) Livingstone 2018}) 11. Nfd2 (11. Qb3 $14) 11... Nbd7 12. Qc2 h6 13. Bxf6 Nxf6 14. Nxf6+ Bxf6 15. Ne4 Bg7 16. c5 Bf5 17. Rad1 Rd5 18. b4 Rd4 19. a3 Rad8 20. e3 R4d7 21. Qe2 Be6 22. Qc2 f5 23. Rxd7 Rxd7 24. Nd6 e4 25. Rd1 Qf6 ({Black should try} 25... Be5 $1 $15) 26. Rd4 Qf8 27. Rd2 a6 28. Nc4 Rxd2 29. Nxd2 Qf6 {[#] Hoping for ...Qb2.} 30. Nc4 Kf8 31. Bf1 Qc3 32. Qxc3 Bxc3 {[%mdl 4096] Endgame KBB-KBN} 33. Nd6 Bb2 34. a4 Ba3 35. b5 (35. Nxb7 $11 {keeps the balance.} Bxb4 36. Nd8) 35... axb5 $17 ({And not} 35... Bxc5 36. Nxb7 Bb6 37. a5 $11 (37. bxc6 Bd5 $15) (37. bxa6 Ke7 $11)) 36. axb5 cxb5 ({But not} 36... Bxc5 $6 37. Nxb7 Bb6 38. bxc6 $11) 37. Bxb5 b6 ({Much less strong is} 37... Bxc5 38. Nxb7 Bb6 39. Nd6 $17) (37... Bd5 $142 38. Ne8 Ke7) 38. Nc4 Bxc5 39. Ne5 g5 40. h4 {[#]} (40. Nd7+ $17 {was necessary.} Ke7 41. Nxc5 bxc5 42. Kf1) 40... Ke7 $1 $19 41. hxg5 hxg5 42. Kf1 Bd6 43. Nc6+ Kf6 44. Nd4 Bc8 45. Ke2 Be5 46. Nb3 Bc3 47. Bc4 $2 {[%mdl 8192]} (47. Nd2 $17) 47... Be6 {Black is clearly winning.} 48. Bxe6 Kxe6 49. f3 Kd5 {Weighted Error Value: White=0.52/Black=0.08} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.4"]
[White "Chiu, Isaac"]
[Black "Taylor, Stewart"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2195"]
[BlackElo "1918"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,77,86,79,81,31,74,48,46,49,71,64,75,38,40,37,37,37,37,38,42,35,54,47,62,26,33,39,41,-64,64,60,91,72,103,76,79,104,157,141,270,275,253,243,306,306,347,347,507,505,626,624,615,615,589,585]} 1. c4 d5 2. cxd5 e6 3. dxe6 Bxe6 4. Nf3 {[#]} c5 $146 ({Predecessor:} 4... Nc6 5. Nc3 Bc5 6. e3 a6 7. d4 Bb4 8. Bd3 f6 9. O-O Qd7 10. a3 Bxc3 11. bxc3 Na5 12. Nd2 O-O-O 13. Qe2 {1-0 (13) Vasilevich,I (2345)-Bilescu,L (1997) Iasi 2014}) 5. g3 Nc6 6. Bg2 {A10: English Opening: Unusual Replies for Black.} Qd7 7. h3 Nge7 8. d3 {White is better.} h6 9. b3 Nd4 {Strongly threatening ...Nxf3+.} 10. Nbd2 Nec6 11. Bb2 Be7 12. e3 Nxf3+ 13. Nxf3 O-O 14. d4 cxd4 15. Nxd4 Bb4+ 16. Kf1 Rfd8 17. Qh5 Nxd4 18. Bxd4 Rac8 19. g4 (19. Kg1 $14) 19... Rc2 (19... Bc3 $15 20. Bxc3 Qd3+ 21. Kg1 Qxc3) 20. Be4 $14 Rd2 21. Kg2 $40 {[%mdl 128] White has strong attack.} Rxd4 22. exd4 Qxd4 {[#]} 23. Bf3 ({But not} 23. Bxb7 $2 Bd5+ 24. Bxd5 Rxd5 $19) 23... Bc5 {[#]} (23... a6 $142) 24. Rhf1 $1 $16 {Hoping for Rad1.} Rd5 {[#]} (24... Qb4 $16 25. Qe5 Bd4) 25. Rad1 $1 $18 Rxh5 26. Rxd4 {Threatens to win with Rd8+.} Bxd4 27. gxh5 {KRB-KB} b6 28. Rd1 Bf6 (28... Bc5 $142 29. Rd8+ Kh7) 29. Bg4 {White is clearly winning.} Bxg4 30. hxg4 Kf8 31. Rd7 a5 32. Rd6 {Weighted Error Value: White=0.16/Black=0.35} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.5"]
[White "Dill, James"]
[Black "Park, Evan"]
[Result "0-1"]
[ECO "A88"]
[WhiteElo "1823"]
[BlackElo "2208"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,56,35,53,23,58,60,57,19,21,19,44,0,4,6,37,8,14,0,0,-8,-9,-16,-9,-261,-268,-283,-273,-260,-229,-248,-244,-404,-400,-509,-403,-425,-417,-455,-463,-459,-459]} 1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O d6 6. c4 O-O 7. Nc3 c6 8. b3 Na6 9. Bb2 Bd7 10. Rc1 {A88: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 c6.} b5 11. cxb5 cxb5 {[#]} 12. b4 $146 {White is slightly better.} ({Predecessor:} 12. Ne1 Rb8 13. Nd3 e6 14. b4 Qb6 15. e4 fxe4 16. Nxe4 Nxe4 17. Bxe4 Bxd4 18. Nc5 Bxc5 19. bxc5 Nxc5 {0-1 (29) Ocantos,M-Alonso Moyano,J (2372) La Pobla de Lillet 2006}) 12... e6 13. Qb3 Nc7 {[%cal Ba6c7,Bc7d5,Bd5b6,Bb6c4][%mdl 32]} 14. Rc2 (14. d5 $5) 14... Rb8 15. Rfc1 Nfd5 16. Nxd5 Nxd5 17. Nd2 Nb6 18. e3 d5 19. Qa3 Nc4 20. Qxa7 {[%mdl 8192] [#] White does not recover from this.} (20. Qc3 $11 {and White has nothing to worry.}) 20... Ra8 $19 21. Qb7 Rf7 {Strongly threatening ...Be8.} ({Less strong is} 21... Rxa2 22. Bc3 $17) 22. Nxc4 bxc4 23. Bxd5 Rb8 {[%mdl 64] [#] Zwischenzug} ({But not} 23... exd5 24. Qxd5 Rxa2 25. Qxc4 $17) 24. Qa6 (24. Rxc4 {keeps fighting.} Rxb7 25. Bxb7) 24... exd5 25. Bc3 Bf8 {And now ...Ra8 would win.} 26. Qa3 Qb6 27. Qb2 Ba4 28. Re2 Bxb4 {Weighted Error Value: White=0.52/Black=0.14} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.6"]
[White "Miller, Daniel"]
[Black "Tay, Brian"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2182"]
[BlackElo "1740"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,53,44,30,31,20,19,21,0,0,0,26,-9,12,0,7,-26,-7,-43,-47,-68,5,5,107,52,213,182,632,621,603,606,29978,29978,29966,5631,1275,420,29994,445,422,429,566,562,642,645]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. Nf3 Bg7 6. Na3 cxd4 7. Bc4 {B06: Modern Defence.} Qe4+ {[#]} 8. Be3 $1 {Strongly threatening Nb5.} Nh6 {[#]} (8... dxe3 $2 {[#]} 9. Bxf7+ $1 {[%mdl 512]} Kxf7 10. Ng5+ Ke8 11. Nxe4 $18) 9. Nb5 $1 {The position is equal.} O-O 10. cxd4 {And now Nc7 would win.} Nc6 11. Bd3 Qg4 12. h3 $36 {[%mdl 2048] White is pushing.} Qd7 (12... Qxg2 $2 13. Rh2 $18) 13. g4 {[#]} f5 $146 ({Predecessor:} 13... Nb4 14. Be2 Nd5 15. Qd2 Nxe3 16. Qxe3 a6 17. Nc3 f6 18. d5 e5 19. O-O-O Nf7 {0-1 (45) Korneev,O (2609)-Saduakassova,D (2336) Nakhchivan 2013}) 14. Qd2 fxg4 15. Ng5 Qd5 ({Much worse is} 15... gxh3 16. Bc4+ Nf7 17. Rxh3 $11) (15... Nf7 $15 16. Bc4 Ncd8) 16. Ne4 Nxd4 (16... Nf7 $11) 17. Nxd4 ({White should try} 17. Bxd4 $16 Bxd4 18. Nxd4 (18. Qxh6 Bxf2+ {[%mdl 64] Remove Defender} 19. Nxf2 g3 $11) 18... Qxd4 19. Qxh6 gxh3 20. O-O-O) 17... Bxd4 {Black cannot hold the game after this.} (17... Nf5 $1 $14 18. Nc2 (18. Nxf5 Bxf5 19. Rc1 Bxe4 $15) 18... gxh3) 18. Bxh6 Rxf2 $2 (18... Rd8 19. Qe2 Bc3+ 20. bxc3 Qxd3 21. hxg4 Qxe2+ 22. Kxe2 Bxg4+ 23. f3 Bf5) 19. Nxf2 $18 Bxf2+ 20. Qxf2 {[%csl Gh6][%cal Rf2f8]} Qxh1+ 21. Kd2 {[%csl Gh6][%cal Rf2f8]} Qf3 22. Bc4+ e6 23. Rf1 (23. Qd4 $142 {[%csl Gh6][%cal Rd4g7]} Qg2+ 24. Ke1 Qg3+ 25. Kd1 Qf3+ 26. Kd2 Qg2+ 27. Ke1 Qg3+ 28. Kd1 Qf3+ 29. Kc2 Qg2+ 30. Bd2) 23... Bd7 (23... Qxf2+ $18 24. Rxf2 Bd7 25. hxg4 b5) 24. hxg4 (24. Qd4 $142 Qg2+ 25. Rf2 Qxf2+ 26. Qxf2 Rd8 27. Qd4 Kf7 28. Qg7+ {[%mdl 64] Double Attack} Ke8 29. Qf8#) 24... Qxf2+ {White is clearly winning.} 25. Rxf2 Rd8 26. Ke3 Bc8 27. a4 {Weighted Error Value: White=0.65/Black=1.21} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.7"]
[White "Kanli, Alperen"]
[Black "Yanayt, Eugene"]
[Result "1-0"]
[ECO "E76"]
[WhiteElo "1911"]
[BlackElo "2079"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,79,0,93,93,93,93,101,84,83,76,82,68,87,81,77,59,68,65,96,72,106,62,85,57,55,53,65,-14,50,47,47,57,42,45,66,62,162,143,159,119,412,389,449,131,120,122,124,54,67,51,43,0,97,87,126,134,142,139,106,123,636,631,577,154,146,135,397,395,377,281]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 e5 (6... O-O $11 {remains equal.}) 7. fxe5 $16 {E76: King's Indian: Four Pawns Attack: Lines specific to 6 Nf3 move-order.} dxe5 8. Nf3 O-O 9. Be2 {White is better.} ({Stronger than} 9. Nxe5 Re8 $17) 9... Ne8 10. Bg5 f6 11. Be3 b6 12. Qd2 Nd6 {[#]} 13. Bh6 $146 ({Predecessor:} 13. Bd3 f5 14. Bg5 Bf6 15. Bh6 Re8 16. g3 Ba6 17. Qe2 Nd7 18. O-O-O Rb8 19. h4 {1-0 (40) Perez Gonsalves,E-Saborido Carre,R Las Palmas 1964}) 13... Rf7 14. Bxg7 Kxg7 15. Qe3 Na6 16. a3 Bd7 17. O-O Rb8 18. Rab1 (18. h3 {looks sharper.} Qe7 19. Bd3 Kg8 20. Rf2 Nc7 21. b3) 18... Rc8 19. Nb5 (19. Bd3 $14) 19... Nxb5 ({Better is} 19... Bxb5 $11 20. cxb5 Nc7) 20. cxb5 $14 Nc7 21. a4 Ne8 22. Nd2 Qc7 23. Nc4 a6 (23... Nd6 $14) 24. bxa6 $18 Bxa4 25. Ra1 $1 {d6 is the strong threat.} Bb5 $2 {[%mdl 8192]} (25... Bd7 $16 {was worth a try.} 26. g4 Kg8) 26. d6 $1 {[%cal Rd6c7]} Qc6 27. Qb3 (27. Qh3 $18 {has better winning chances. aiming for Nxe5!} Ra8 28. Nxe5 $1 {[%mdl 576] Pin} Qxd6 29. Qh6+ $3 {[%mdl 512]} (29. Bxb5 Qxe5 30. Qb3 Nc7 $16) (29. Nxf7 Qd4+ 30. Rf2 Bxe2 $18) 29... Kxh6 30. Nxf7+ Kg7 31. Nxd6 Bxe2 32. Nxe8+ Rxe8 33. Rfe1) 27... Bxc4 $16 28. Bxc4 Ra7 29. Bd5 (29. Bb5 $16 Qxd6 30. Rfd1) 29... Qxd6 $14 30. Bb7 $1 $36 {[%cal Rb7c8][%mdl 2048] White has good play.} c4 $1 {[%cal Rc4b3]} 31. Qh3 Rd8 (31... Rc7 $11) 32. Rad1 $1 $16 {[%cal Rd1d6]} (32. Bd5 Nc7 $17) 32... Qc5+ 33. Kh1 Rd6 34. Rxd6 Qxd6 35. Qg4 Nc7 $2 {[%mdl 8192] [#]} (35... h5 $16 36. Qc8 {[%mdl 64] Double Attack} Nc7) 36. Rd1 $1 $18 {[%cal Rd1d6]} Qe6 37. Qxe6 (37. Rd7+ $18 Kh8 38. Qd1 Nxa6 39. Rd8+ Kg7 40. Bd5) 37... Nxe6 $16 {[#]} 38. Rd6 $1 {[%cal Rd6e6]} Kf7 {[%mdl 8192]} (38... Nc5 $16 {was necessary.} 39. Rxb6 Kf8) 39. Bd5 $18 Rxa6 {[%cal Ra6a1]} 40. h3 {Weighted Error Value: White=0.39/Black=0.58} ({Not} 40. Bxe6+ $2 Ke7 $19) 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.8"]
[White "Lee, Justin"]
[Black "Yogeshwar Yehamandram Sridhar"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "1953"]
[BlackElo "1794"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,-31,-17,-31,-13,-20,-27,-26,-23,-31,-10,-46,-44,-62,-32,-72,-55,-78,-66,-59,-50,-52,-53,-55,-52,-88,0,6,22,0,0,-3,73,54,111,97,107,104,135,134,142,123,194,178,188,176,196,194,201,187,189,193,196,152,134,74,72,69,239,239,239,239,239,239,250,245,254,193,193,-72,-15,-672,-455,-1619,-1642,-1391,-1040,-606,0,0,0,-29990,-29991,-29991,-29992,-29994,-29995,-29997,-29998]} 1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. Nh3 Be7 6. O-O {B24: Closed Sicilian: 3 g3 sidelines.} O-O {[#]} 7. f4 $146 ({Predecessor:} 7. d3 d5 8. exd5 exd5 9. Nf4 Bg4 10. Qd2 d4 11. Ncd5 Ne5 12. Nxf6+ Bxf6 13. f3 Bd7 14. Nd5 Bc6 15. Nxf6+ Qxf6 {0-1 (46) Morrison,C (2200)-Plaskett,H (2440) Manchester 1983}) 7... d5 8. e5 {Black has an edge.} Nd7 9. d3 a6 10. Qh5 Nd4 11. Rf2 Rb8 12. Be3 g6 13. Qd1 Nf5 14. Bd2 h5 15. Qe1 b5 16. Nd1 Nb6 17. c3 c4 (17... d4 $17) 18. d4 $11 a5 19. Ng5 b4 20. Bh3 Kg7 (20... Na4 $11) 21. Bxf5 $16 {aiming for Bc2.} ({Much weaker is} 21. cxb4 Nxd4 22. Rc1 Nd7 $15) 21... exf5 (21... bxc3 $14 22. Bxc3 (22. Nxc3 gxf5 23. Nd1 a4 $11) 22... gxf5) 22. cxb4 axb4 23. Bxb4 Na4 24. Bxe7 Qxe7 25. Qa5 Qd7 (25... Qb4 $16 {was worth a try.} 26. Qxb4 (26. Qxd5 Bb7 $16) 26... Rxb4) 26. b3 Nb6 27. Ne3 cxb3 28. axb3 Ra8 29. Qc3 ({Weaker is} 29. Qxb6 Rxa1+ 30. Kg2 Ra6 $17) 29... Rxa1+ 30. Qxa1 Qb5 31. Qa7 Qxb3 32. Rf3 ({Better is} 32. Nc2) 32... Qb1+ 33. Kg2 Kg8 $2 (33... Nc4 $1 $14) 34. Qe7 $1 $18 Qb2+ 35. Kh3 Qxd4 36. Ng2 $1 {[%cal Rg2h4] Nh4 is the strong threat.} ({Inferior is} 36. Nh7 Kxh7 37. Qxf8 Be6 $11) 36... Qa4 {[#]} 37. Nh7 $1 {[%mdl 512]} Kxh7 38. Qxf8 Be6 39. Qc5 {[#]} (39. Ra3 $1 $18 {[%cal Ra3a4]} Qc4 40. Ne1) 39... Qd1 40. Qe3 {[%mdl 8192]} (40. Ne1 $11) 40... Nc4 41. Qd3 (41. Qb3 $142 Qg1 42. Qd3 Nxe5 43. Rf1 Qxg2+ 44. Kxg2 Nxd3 45. Rd1) 41... Nd2 $19 42. Nh4 d4 43. Qxd4 {[#]} Qe1 $2 (43... Qh1 $1 $19 {( -> ...g5)} 44. Qxd2 g5 45. fxg5 f4+ 46. Nf5 Qxf3 47. Qxf4 Bxf5+ 48. Kh4 Qg4+ 49. Qxg4 Bxg4 50. g6+ Kxg6) 44. Rf2 $11 Ne4 45. Rg2 {[%mdl 8192]} (45. Kg2 $11) 45... Qf1 {Black mates.} 46. Nxg6 Kxg6 47. Qg1 Qf3 {[%csl Ge6,Gf5,Gh5][%cal Rf3g4]} 48. Rc2 {[#]} Ng5+ $1 {[%mdl 512] Weighted Error Value: White=0.56/Black=0.38} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "1.9"]
[White "Nair, Siddhant"]
[Black "Singh, Hersh"]
[Result "0-1"]
[ECO "E02"]
[WhiteElo "1823"]
[BlackElo "2080"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,116,31,40,0,15,0,14,-10,0,7,7,7,12,0,-12,-12,-12,-14,29,42,25,-44,-49,-48,-51,-48,-51,-64,-55,-69,-69,-74,-65,-61,-58,-64,4,0,0,0,0,0,0,0,0,-14,0,0,0,0,0,-38,-38,-38,-45,-45,-47,-71,-70,-191,-206,-222,-222,-218,-218,-279,-199,-519,-504,-1012,-1012,-1133,-1133,-1133,-1133,-4890,-4890,-29963,-12483,-9826,-5911,-29958,-29968,-29962,-6151,-29982,-29973,-29971,-29973,-29977,-29978,-29978,-29969,-29979,-29980,-29980,-29981,-29983,-29978,-29983,-29973,-29997,-29998,-29998,-29999]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Nc6 6. Qa4 Bd7 7. Qxc4 Na5 8. Qc2 {8.Qc3 is becoming the main line. E02: Open Catalan: 5 Qa4+.} Rc8 $1 9. Nc3 c5 $1 10. O-O {The position is equal.} cxd4 11. Nxd4 Qb6 12. Rd1 Bc5 {[#]} 13. Na4 $146 ({Predecessor:} 13. e3 O-O 14. Nb3 Nxb3 15. Qxb3 Qxb3 16. axb3 Bc6 17. Bd2 Bxg2 18. Kxg2 Rfd8 {½-½ (18) Tratar,M (2440)-Grosar,A (2430) Bled 2005}) 13... Bxd4 14. Nxb6 Rxc2 15. Nxd7 Bxb2 (15... Rxe2 {is more complex.} 16. Bf1 Bxf2+ 17. Kg2 Re1 18. Nxf6+ gxf6 19. Bh6 Rxd1 20. Rxd1 Bb6) 16. Bxb2 Rxb2 {[#]} 17. Nxf6+ (17. Rac1 $1 $11 Ke7 18. Ne5) 17... gxf6 $15 18. Rdb1 Rxb1+ 19. Rxb1 {[%mdl 4096] Endgame KRB-KRN} b6 $1 20. Rc1 {aiming for Rc8+.} Kd7 21. Rd1+ Ke7 22. Rc1 Rd8 23. f4 Rd2 24. Rc7+ Kf8 (24... Rd7 $1 $15 25. Rc8 f5) 25. Bf3 $11 Rxa2 26. Rxa7 b5 27. Bh5 b4 {Hoping for ...b3.} 28. Bxf7 {Black should prevent Kf2.} Rxe2 {...b3 is the strong threat.} 29. Kf1 Rxh2 {White must now prevent ...Nc6.} 30. Bxe6 Nc6 31. Rd7 Rc2 32. Rxh7 Nd4 33. Bd5 Rc5 34. Rh8+ Ke7 35. Rh7+ Kd6 36. Bg8 {White does not recover from this.} (36. Be4 $15) 36... Rc8 $19 37. Rg7 {[#]} b3 $1 {[%cal Rb3b2]} 38. Bxb3 Nxb3 {KRN-KR} 39. Rg6 Ke7 40. g4 $2 (40. Rg7+ Kd6 41. Rb7 Nd2+ 42. Kg2) 40... Kf7 41. Rh6 (41. f5 $142 Rg8 42. Rh6) 41... Rc4 42. Kf2 Rxf4+ 43. Kg3 Rb4 44. Rh5 Nd2 45. Rf5 Ne4+ (45... Rb3+ $142 46. Kg2 Ne4 47. Kh2 Kg6 48. Rf4 Rb2+ 49. Kg1 Rb4 50. Rf5 Nc3 51. Kf1 Rxg4 52. Rc5 Ne4 53. Rc8 Rg3 54. Ke2 f5 55. Rc4 Kg5 56. Rd4 Kf4 57. Rd7 Re3+ 58. Kd1 Kf3 59. Rf7 f4 60. Rf8 Kg3 61. Rb8 f3 62. Rc8 Kg2 63. Rg8+ Kf2 64. Re8 Kg3 65. Rf8 f2 66. Kc2 Kg2 67. Rg8+ Kf3 68. Rf8+ Ke2 69. Kc1 f1=Q+ 70. Rxf1 Kxf1 71. Kc2 Ke2 72. Kb1 Kd1 73. Kb2 Nd2 74. Ka1 Kc2 75. Ka2 Kc1 76. Ka1 Ra3#) 46. Kf3 Ng5+ 47. Kg3 Rb3+ 48. Kg2 Kg6 (48... Ne4 $142 49. Rf4 Ng5 50. Rf5 Kg6 51. Ra5 Nf3 52. Kf2 Nh2 53. Ra4 Kg5 54. Ke2 Nxg4 55. Rd4 f5 56. Rd5 Re3+ 57. Kd2 Re5 58. Rd8 f4 59. Rf8 Nf6 60. Rf7 f3 61. Rg7+ Kf4 62. Rb7 f2 63. Rb1 Ne4+ 64. Kd3 Ng3 65. Kd4 Re1 66. Rb4 Re4+ 67. Kc5 f1=Q 68. Rxe4+ Nxe4+ 69. Kd5 Qa6 70. Kd4 Qc6 71. Kd3 Qc3+ 72. Ke2 Qd2+ 73. Kf1 Qf2#) 49. Kh2 Rf3 {Black mates.} 50. Ra5 Ne4 51. Ra4 Re3 52. Kg2 Rg3+ 53. Kh2 Rxg4 54. Ra5 f5 55. Kh3 Kg5 56. Ra8 Kf4 57. Ra5 Ng5+ 58. Kh2 Nf3+ {Weighted Error Value: White=0.78/Black=0.15} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.1"]
[White "Prasanna Raghuram Rao"]
[Black "Zaloznyy, Mike"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2435"]
[BlackElo "1996"]
[Annotator "ChessBase"]
[PlyCount "29"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:00:19]} Nf6 {[%emt 0:00:17]} 2. c4 {[%emt 0:00:06]} b6 {[%emt 0:00:40]} 3. Nc3 {[%emt 0:02:10]} Bb7 {[%emt 0:00:13]} 4. Qc2 {[%emt 0:00:09]} d5 {[%emt 0:00:29]} 5. Nf3 {[%emt 0:05:54]} e6 {[%emt 0:00:31]} 6. Bg5 {[%emt 0:16:00]} Bb4 {[%emt 0:03:48]} 7. Qa4+ {[%emt 0:08:09]} Nc6 {[%emt 0:00:22]} 8. Bxf6 {[%emt 0:13:20]} Qxf6 {[%emt 0:08:01]} 9. Ne5 {[%emt 0:02:39]} Qd8 {[%emt 0:08:47]} 10. Rc1 {[%emt 0:03:04]} Qd6 {[%emt 0:32:49]} 11. cxd5 {[%emt 0:00:06]} exd5 {[%emt 0:02:17]} 12. a3 {[%emt 0:00:05]} Bc5 {[%emt 0:04:52]} 13. e3 {[%emt 0:11:11]} f6 {[%emt 0:03:34]} 14. Nxc6 {[%emt 0:00:33]} Bxc6 {[%emt 0:00:04]} 15. Bb5 {[%emt 0:03:32]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.2"]
[White "Lu, Jason"]
[Black "Liang, Jason"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "2068"]
[BlackElo "2351"]
[Annotator "ChessBase"]
[PlyCount "116"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} Bg4 {[%emt 0:00:00]} 4. h3 {[%emt 0:00:00]} Bxf3 {[%emt 0:00:05]} 5. Qxf3 {[%emt 0:00:04]} e6 {[%emt 0:00:11]} 6. Be2 {[%emt 0:00:23]} Bc5 {[%emt 0:00:15]} 7. O-O {[%emt 0:00:19]} Nd7 {[%emt 0:00:18]} 8. b4 {[%emt 0:00:21]} Bd4 {[%emt 0:00:10]} 9. Qd3 {[%emt 0:00:08]} Bf6 {[%emt 0:22:03]} 10. Rb1 {[%emt 0:00:29]} Ne7 {[%emt 0:09:37]} 11. f4 {[%emt 0:00:16]} Bxc3 {[%emt 0:04:58]} 12. dxc3 {[%emt 0:00:17]} Nf6 {[%emt 0:02:18]} 13. e5 {[%emt 0:04:49]} Ne4 {[%emt 0:00:15]} 14. Bf3 {[%emt 0:11:07]} Nf5 {[%emt 0:03:28]} 15. Bxe4 {[%emt 0:22:46]} dxe4 {[%emt 0:00:29]} 16. Qxd8+ {[%emt 0:00:08]} Rxd8 {[%emt 0:00:07]} 17. Kf2 {[%emt 0:00:33]} f6 {[%emt 0:10:08]} 18. Re1 {[%emt 0:05:53]} e3+ {[%emt 0:12:02]} 19. Bxe3 {[%emt 0:00:53]} fxe5 {[%emt 0:00:21]} 20. Rbd1 {[%emt 0:10:43]} Rxd1 {[%emt 0:04:38]} 21. Rxd1 {[%emt 0:00:07]} Nxe3 {[%emt 0:00:18]} 22. Kxe3 {[%emt 0:00:02]} exf4+ {[%emt 0:00:13]} 23. Kxf4 {[%emt 0:00:02]} Ke7 {[%emt 0:00:14]} 24. c4 {[%emt 0:16:15]} Rf8+ {[%emt 0:00:46]} 25. Ke3 {[%emt 0:01:07]} Rf5 {[%emt 0:00:31]} 26. c5 {[%emt 0:05:36]} Re5+ {[%emt 0:00:13]} 27. Kf3 {[%emt 0:01:09]} Rf5+ {[%emt 0:07:08]} 28. Ke3 {[%emt 0:00:36]} g5 {[%emt 0:01:22]} 29. c3 {[%emt 0:04:39]} Rf4 {[%emt 0:02:00]} 30. Rd4 {[%emt 0:05:42]} Rf1 {[%emt 0:02:37]} 31. h4 {[%emt 0:03:44]} h6 {[%emt 0:06:45]} 32. hxg5 {[%emt 0:01:25]} hxg5 {[%emt 0:00:10]} 33. Rg4 {[%emt 0:00:20]} Kf6 {[%emt 0:02:03]} 34. Rd4 {[%emt 0:00:33]} Rc1 {[%emt 0:11:48]} 35. Rd7 {[%emt 0:05:51]} Rxc3+ {[%emt 0:00:30]} 36. Kd4 {[%emt 0:00:09]} Rc2 {[%emt 0:00:29]} 37. Rxb7 {[%emt 0:00:12]} Rxa2 {[%emt 0:00:06]} 38. Rc7 {[%emt 0:02:35]} Ra4 {[%emt 0:05:22]} 39. Kc3 {[%emt 0:01:20]} Ra6 {[%emt 0:01:23]} 40. Kd4 {[%emt 0:02:08]} g4 {[%emt 0:01:17]} 41. g3 {[%emt 0:03:10]} Ra4 {[%emt 0:01:22]} 42. Kc3 {[%emt 0:00:38]} a5 {[%emt 0:03:35]} 43. bxa5 {[%emt 0:00:40]} Rxa5 {[%emt 0:00:18]} 44. Rxc6 {[%emt 0:00:18]} Ra3+ {[%emt 0:04:23]} 45. Kd4 {[%emt 0:00:08]} Rxg3 {[%emt 0:00:07]} 46. Rc8 {[%emt 0:00:06]} Rg1 {[%emt 0:00:27]} 47. Rg8 {[%emt 0:00:52]} Kf5 {[%emt 0:01:01]} 48. Rf8+ {[%emt 0:05:14]} Kg5 {[%emt 0:00:59]} 49. Re8 Rd1+ {[%emt 0:00:30]} 50. Ke4 {[%emt 0:04:04]} Re1+ {[%emt 0:00:54]} 51. Kd3 {[%emt 0:01:15]} g3 {[%emt 0:02:04]} 52. Kd2 {[%emt 0:01:23]} Re5 {[%emt 0:01:48]} 53. c6 {[%emt 0:00:18]} Rc5 {[%emt 0:00:08]} 54. Rxe6 {[%emt 0:01:42]} g2 {[%emt 0:00:10]} 55. Re1 {[%emt 0:01:38]} Kf4 {[%emt 0:00:15]} 56. Rb1 {[%emt 0:02:06]} Kf3 {[%emt 0:01:03]} 57. c7 {[%emt 0:00:24]} Rxc7 {[%emt 0:00:09]} 58. Rf1+ {[%emt 0:03:10]} gxf1=R {[%emt 0:00:29]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.3"]
[White "Zhurbinsky, David"]
[Black "Chiu, Isaac"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1823"]
[BlackElo "2195"]
[Annotator "ChessBase"]
[PlyCount "100"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 3. c4 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:54]} e5 {[%emt 0:00:00]} 5. Be3 {[%emt 0:01:29]} exd4 {[%emt 0:00:13]} 6. Bxd4 {[%emt 0:00:11]} Nf6 {[%emt 0:00:03]} 7. Nf3 {[%emt 0:02:02]} O-O {[%emt 0:02:54]} 8. Be2 {[%emt 0:03:03]} Re8 {[%emt 0:06:03]} 9. e5 {[%emt 0:08:43]} dxe5 {[%emt 0:01:24]} 10. Bxe5 {[%emt 0:00:52]} c6 {[%emt 0:13:55]} 11. O-O {[%emt 0:05:36]} Bf5 {[%emt 0:06:04]} 12. Qb3 {[%emt 0:05:21]} Qb6 {[%emt 0:20:16]} 13. Bd4 {[%emt 0:06:46]} Qxb3 {[%emt 0:13:35]} 14. axb3 {[%emt 0:00:07]} Na6 {[%emt 0:00:02]} 15. Ra4 {[%emt 0:06:56]} c5 {[%emt 0:05:02]} 16. Bxf6 {[%emt 0:11:48]} Bxf6 {[%emt 0:00:02]} 17. Re1 {[%emt 0:01:21]} Nb4 {[%emt 0:02:17]} 18. Bf1 {[%emt 0:05:13]} Rxe1 {[%emt 0:03:16]} 19. Nxe1 {[%emt 0:00:06]} a6 {[%emt 0:00:29]} 20. Ra1 {[%emt 0:04:59]} Rd8 {[%emt 0:03:26]} 21. Rd1 {[%emt 0:08:35]} Rxd1 {[%emt 0:08:04]} 22. Nxd1 {[%emt 0:00:05]} Nc2 {[%emt 0:01:26]} 23. Nd3 {[%emt 0:05:35]} Bd4 {[%emt 0:12:43]} 24. Nc3 {[%emt 0:03:31]} Na1 {[%emt 0:01:29]} 25. b4 {[%emt 0:07:06]} Bxd3 {[%emt 0:00:29]} 26. Bxd3 {[%emt 0:00:05]} cxb4 {[%emt 0:00:03]} 27. Na4 {[%emt 0:01:07]} Nb3 {[%emt 0:03:35]} 28. Bc2 {[%emt 0:05:20]} Nd2 {[%emt 0:02:39]} 29. c5 {[%emt 0:03:07]} f5 {[%emt 0:00:18]} 30. Bd3 {[%emt 0:02:56]} Kf7 {[%emt 0:03:02]} 31. c6 {[%emt 0:10:30]} bxc6 {[%emt 0:00:07]} 32. Bxa6 {[%emt 0:00:16]} Ke7 {[%emt 0:00:48]} 33. Bd3 {[%emt 0:05:58]} Kd6 {[%emt 0:00:43]} 34. h4 {[%emt 0:01:02]} Ba7 {[%emt 0:01:08]} 35. h5 {[%emt 0:01:15]} Kd5 {[%emt 0:00:52]} 36. hxg6 {[%emt 0:02:12]} hxg6 {[%emt 0:00:01]} 37. g4 {[%emt 0:02:29]} fxg4 {[%emt 0:00:13]} 38. Kg2 {[%emt 0:00:35]} Nf3 {[%emt 0:00:53]} 39. Be2 {[%emt 0:02:43]} Ne5 {[%emt 0:01:11]} 40. Kg3 {[%emt 0:02:38]} Bd4 {[%emt 0:00:27]} 41. Bd1 {[%emt 0:01:06]} Kc4 {[%emt 0:06:02]} 42. Be2+ {[%emt 0:01:26]} Kb3 {[%emt 0:01:34]} 43. Bd1+ {[%emt 0:00:03]} Ka2 {[%emt 0:00:01]} 44. b3 {[%emt 0:03:12]} Kb1 {[%emt 0:01:22]} 45. Be2 {[%emt 0:00:55]} g5 {[%emt 0:00:58]} 46. Bc4 {[%emt 0:01:41]} Nxc4 {[%emt 0:00:34]} 47. bxc4 {[%emt 0:00:04]} Kc2 {[%emt 0:00:22]} 48. c5 {[%emt 0:00:54]} b3 {[%emt 0:00:11]} 49. Kxg4 {[%emt 0:00:16]} b2 {[%emt 0:00:12]} 50. Nxb2 {[%emt 0:00:05]} Kxb2 {[%emt 0:00:05]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.4"]
[White "Park, Evan"]
[Black "Altman, Joshua"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "2208"]
[BlackElo "1926"]
[Annotator "ChessBase"]
[PlyCount "100"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. c4 {[%emt 0:00:16]} e5 {[%emt 0:00:03]} 2. g3 {[%emt 0:01:22]} Nc6 {[%emt 0:00:05]} 3. Bg2 {[%emt 0:00:21]} Bc5 {[%emt 0:00:46]} 4. Nc3 {[%emt 0:01:57]} Nf6 {[%emt 0:00:12]} 5. Nf3 {[%emt 0:06:04]} d6 {[%emt 0:01:19]} 6. O-O {[%emt 0:03:19]} O-O {[%emt 0:00:51]} 7. e3 {[%emt 0:02:56]} h6 {[%emt 0:07:55]} 8. d3 {[%emt 0:04:09]} a6 {[%emt 0:02:37]} 9. a3 {[%emt 0:02:00]} Rb8 {[%emt 0:02:54]} 10. Nd5 {[%emt 0:04:11]} Ba7 {[%emt 0:09:07]} 11. b4 {[%emt 0:03:49]} Nh7 {[%emt 0:24:14]} 12. Bb2 {[%emt 0:18:10]} Ne7 {[%emt 0:15:51]} 13. Nxe7+ {[%emt 0:13:05]} Qxe7 {[%emt 0:00:02]} 14. c5 {[%emt 0:03:36]} Bg4 {[%emt 0:10:50]} 15. Qb3 {[%emt 0:09:47]} Qe6 {[%emt 0:29:14]} 16. Qc3 {[%emt 0:03:32]} Bh3 {[%emt 0:06:21]} 17. Qc4 {[%emt 0:09:13]} Qxc4 {[%emt 0:09:19]} 18. dxc4 {[%emt 0:00:05]} Bxg2 {[%emt 0:00:06]} 19. Kxg2 {[%emt 0:00:06]} f6 {[%emt 0:04:44]} 20. cxd6 {[%emt 0:01:06]} cxd6 {[%emt 0:00:01]} 21. Rfd1 {[%emt 0:00:11]} Rfd8 {[%emt 0:00:16]} 22. Nh4 {[%emt 0:02:24]} Rbc8 {[%emt 0:00:42]} 23. Rac1 {[%emt 0:00:39]} Kf7 {[%emt 0:01:39]} 24. Nf5 {[%emt 0:00:27]} Bb8 {[%emt 0:00:22]} 25. e4 {[%emt 0:04:22]} Ng5 {[%emt 0:00:39]} 26. f3 {[%emt 0:00:34]} Ne6 {[%emt 0:01:16]} 27. a4 {[%emt 0:02:12]} h5 {[%emt 0:00:55]} 28. Ne3 {[%emt 0:02:03]} Ba7 {[%emt 0:00:43]} 29. Nd5 {[%emt 0:00:05]} Bd4 {[%emt 0:00:28]} 30. Ba3 {[%emt 0:02:16]} Nc7 {[%emt 0:00:14]} 31. Kf1 {[%emt 0:04:49]} Nxd5 {[%emt 0:00:17]} 32. cxd5 {[%emt 0:00:12]} Ke7 {[%emt 0:00:34]} 33. Ke2 {[%emt 0:00:15]} Kd7 {[%emt 0:00:21]} 34. Rxc8 {[%emt 0:03:12]} Rxc8 {[%emt 0:00:02]} 35. Rc1 {[%emt 0:00:09]} Rxc1 {[%emt 0:01:51]} 36. Bxc1 {[%emt 0:00:05]} b5 {[%emt 0:00:12]} 37. axb5 {[%emt 0:00:14]} axb5 {[%emt 0:00:03]} 38. Bd2 {[%emt 0:00:24]} g5 {[%emt 0:01:10]} 39. h3 {[%emt 0:01:09]} Ke7 {[%emt 0:00:28]} 40. Kd3 {[%emt 0:02:34]} Bf2 {[%emt 0:00:22]} 41. f4 {[%emt 0:01:47]} Bxg3 {[%emt 0:00:14]} 42. fxg5 {[%emt 0:00:10]} fxg5 {[%emt 0:00:05]} 43. Bxg5+ {[%emt 0:00:04]} Kd7 {[%emt 0:00:09]} 44. Ke2 {[%emt 0:00:14]} Ke8 {[%emt 0:01:00]} 45. Kf1 {[%emt 0:01:05]} Kf7 {[%emt 0:00:28]} 46. Ke2 {[%emt 0:00:58]} Ke8 {[%emt 0:00:26]} 47. h4 {[%emt 0:01:27]} Kf7 {[%emt 0:00:25]} 48. Kf1 {[%emt 0:00:05]} Ke8 {[%emt 0:00:45]} 49. Ke2 {[%emt 0:00:08]} Kf7 {[%emt 0:00:04]} 50. Kf1 {[%emt 0:00:03]} Ke8 {[%emt 0:00:05]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.5"]
[White "Yogeshwar Yehamandram Sridhar"]
[Black "Miller, Daniel"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "1794"]
[BlackElo "2182"]
[Annotator "NA"]
[PlyCount "96"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:51]} Bb4 {[%emt 0:00:00]} 4. Bc4 {[%emt 0:03:56]} O-O {[%emt 0:00:01]} 5. d3 {[%emt 0:01:44]} d5 {[%emt 0:00:06]} 6. exd5 {[%emt 0:00:29]} Nxd5 {[%emt 0:00:08]} 7. Bd2 {[%emt 0:00:37]} Bxc3 {[%emt 0:00:06]} 8. Bxc3 $11 {[%emt 0:00:18]} Nxc3 {[%emt 0:00:07]} 9. bxc3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:49]} 10. h3 {[%emt 0:04:24]} Bf5 {[%emt 0:04:09]} 11. O-O {[%emt 0:07:14]} e4 {[%emt 0:08:30]} 12. dxe4 {[%emt 0:02:47]} Qxd1 {[%emt 0:10:36]} 13. Raxd1 {[%emt 0:01:00]} Bxe4 {[%emt 0:00:07]} 14. Rd7 {[%emt 0:08:39]} Bxf3 {[%emt 0:20:22]} 15. gxf3 {[%emt 0:00:11]} Ne5 {[%emt 0:00:20]} 16. Rxc7 {[%emt 0:00:31]} Rac8 {[%emt 0:00:28]} 17. Rxc8 {[%emt 0:00:43]} Rxc8 {[%emt 0:00:03]} 18. Bb3 {[%emt 0:00:10]} g5 {[%emt 0:07:26]} 19. Rd1 {[%emt 0:18:11]} Kg7 {[%emt 0:02:53]} 20. Kg2 {[%emt 0:02:31]} Rxc3 {[%emt 0:00:26]} 21. Re1 {[%emt 0:01:30]} Ng6 {[%emt 0:05:27]} 22. Re3 {[%emt 0:02:01]} Nh4+ {[%emt 0:00:12]} 23. Kf1 {[%emt 0:01:40]} Rxe3 {[%emt 0:00:05]} 24. fxe3 {[%emt 0:00:01]} Nxf3 {[%emt 0:00:10]} 25. Bd5 {[%emt 0:01:14]} Nd2+ {[%emt 0:02:10]} 26. Ke1 {[%emt 0:01:19]} Nb1 {[%emt 0:00:09]} 27. Bxb7 {[%emt 0:00:28]} Nc3 {[%emt 0:05:03]} 28. a3 {[%emt 0:00:54]} Kf6 {[%emt 0:00:36]} 29. Kd2 {[%emt 0:02:50]} Nb5 {[%emt 0:08:51]} 30. a4 {[%emt 0:02:32]} Nd6 {[%emt 0:00:06]} 31. Bf3 {[%emt 0:05:22]} Nc4+ {[%emt 0:03:27]} 32. Ke2 {[%emt 0:01:46]} a5 {[%emt 0:02:49]} 33. Bd5 {[%emt 0:04:16]} Nb6 {[%emt 0:04:33]} 34. Bc6 {[%emt 0:03:29]} h5 {[%emt 0:00:50]} 35. Kd3 {[%emt 0:03:03]} Ke5 {[%emt 0:00:30]} 36. Be8 {[%emt 0:13:24]} h4 {[%emt 0:00:17]} 37. c4 {[%emt 0:05:45]} f5 {[%emt 0:01:46]} 38. c5 {[%emt 0:01:40]} Nd5 {[%emt 0:00:42]} 39. Ke2 {[%emt 0:03:23]} Nf6 {[%emt 0:08:13]} 40. Bg6 {[%emt 0:04:24]} Ne4 {[%emt 0:00:07]} 41. c6 {[%emt 0:00:55]} Nc3+ {[%emt 0:00:08]} 42. Kf3 {[%emt 0:01:21]} Nxa4 {[%emt 0:00:16]} 43. e4 {[%emt 0:01:05]} f4 {[%emt 0:10:35]} 44. Kg4 {[%emt 0:06:10]} Nb6 {[%emt 0:00:54]} 45. c7 {[%emt 0:06:05]} a4 {[%emt 0:00:29]} 46. Bf7 {[%emt 0:04:36]} a3 {[%emt 0:04:21]} 47. Kf3 {[%emt 0:00:25]} Kd6 {[%emt 0:00:31]} 48. Ba2 {[%emt 0:00:09]} Kxc7 {[%emt 0:00:30]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.6"]
[White "Singh, Hersh"]
[Black "Kanli, Alperen"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "2080"]
[BlackElo "1911"]
[Annotator "NA"]
[PlyCount "31"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} dxc4 {[%emt 0:00:00]} 3. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 4. Nf3 {[%emt 0:00:00]} exd4 {[%emt 0:00:43]} 5. Bxc4 {[%emt 0:00:44]} Nc6 {[%emt 0:01:50]} 6. O-O {[%emt 0:01:16]} Be6 {[%emt 0:00:18]} 7. Bb5 {[%emt 0:01:12]} Bd7 {[%emt 0:01:36]} 8. Bxc6 {[%emt 0:02:19]} Bxc6 {[%emt 0:00:11]} 9. Nxd4 {[%emt 0:00:40]} Bd7 {[%emt 0:01:04]} 10. Qb3 {[%emt 0:21:00]} c5 {[%emt 0:11:23]} 11. Nf5 {[%emt 0:08:19]} Qb6 {[%emt 0:02:00]} 12. Nc3 {[%emt 0:22:50]} O-O-O {[%emt 0:12:47]} 13. Bf4 {[%emt 0:07:59]} Bxf5 {[%emt 0:09:52]} 14. exf5 {[%emt 0:03:39]} Qxb3 {[%emt 0:01:00]} 15. axb3 {[%emt 0:00:03]} a6 {[%emt 0:00:00]} 16. b4 {[%emt 0:20:44]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.7"]
[White "Weeter, Cody Heath"]
[Black "Moor, Nathaniel Philip"]
[Result "1/2-1/2"]
[ECO "A26"]
[BlackElo "1712"]
[Annotator "NA"]
[PlyCount "78"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 3. Bg2 {[%emt 0:00:00]} Nc6 {[%emt 0:00:16]} 4. Nc3 {[%emt 0:00:43]} g6 {[%emt 0:01:02]} 5. d3 {[%emt 0:04:10]} Bg7 {[%emt 0:00:44]} 6. Bg5 {[%emt 0:00:43]} h6 {[%emt 0:01:48]} 7. Bxf6 {[%emt 0:00:32]} Qxf6 {[%emt 0:00:17]} 8. Nf3 {[%emt 0:00:58]} d6 {[%emt 0:00:36]} 9. Nd5 {[%emt 0:03:48]} Qd8 {[%emt 0:00:07]} 10. O-O {[%emt 0:00:24]} O-O {[%emt 0:00:22]} 11. Rb1 {[%emt 0:01:02]} a5 {[%emt 0:06:26]} 12. a3 {[%emt 0:00:17]} Be6 {[%emt 0:07:42]} 13. b4 {[%emt 0:03:05]} axb4 {[%emt 0:00:19]} 14. axb4 {[%emt 0:00:14]} Ne7 {[%emt 0:12:58]} 15. Nd2 {[%emt 0:03:48]} c6 {[%emt 0:04:50]} 16. Nxe7+ {[%emt 0:01:07]} Qxe7 {[%emt 0:00:02]} 17. b5 {[%emt 0:00:34]} c5 {[%emt 0:00:22]} 18. Ra1 {[%emt 0:06:19]} Rxa1 {[%emt 0:10:30]} 19. Qxa1 {[%emt 0:00:12]} e4 {[%emt 0:00:04]} 20. Qa7 {[%emt 0:00:30]} e3 {[%emt 0:00:06]} 21. fxe3 {[%emt 0:02:23]} Bg4 {[%emt 0:00:18]} 22. Rf2 {[%emt 0:23:05]} Qxe3 {[%emt 0:15:44]} 23. Nf1 {[%emt 0:00:33]} Qc1 {[%emt 0:00:29]} 24. e3 {[%emt 0:04:15]} Bf5 {[%emt 0:31:50]} 25. Qxb7 {[%emt 0:05:01]} Bxd3 {[%emt 0:01:32]} 26. Bd5 {[%emt 0:02:46]} Bxc4 {[%emt 0:10:52]} 27. Rxf7 {[%emt 0:03:08]} Kh8 {[%emt 0:00:44]} 28. Rxf8+ {[%emt 0:02:53]} Bxf8 {[%emt 0:00:03]} 29. Bxc4 {[%emt 0:01:41]} Qxc4 {[%emt 0:00:36]} 30. Qc8 {[%emt 0:00:22]} Qxb5 {[%emt 0:00:52]} 31. Qxf8+ {[%emt 0:00:20]} Kh7 {[%emt 0:00:01]} 32. Qe7+ {[%emt 0:01:12]} Kh8 {[%emt 0:00:06]} 33. Qxd6 {[%emt 0:00:49]} Kh7 {[%emt 0:01:30]} 34. Nd2 {[%emt 0:01:44]} Qe2 {[%emt 0:00:16]} 35. Qe7+ {[%emt 0:03:25]} Kg8 {[%emt 0:02:16]} 36. Qe6+ {[%emt 0:00:36]} Kg7 {[%emt 0:00:04]} 37. Qe5+ {[%emt 0:00:38]} Kh7 {[%emt 0:00:41]} 38. Qc3 {[%emt 0:02:20]} Qe1+ {[%emt 0:00:38]} 39. Kg2 {[%emt 0:01:35]} Qe2+ {[%emt 0:00:05]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.8"]
[White "Ye, Chen-Chen"]
[Black "Siamon, David"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "1798"]
[BlackElo "1956"]
[Annotator "NA"]
[PlyCount "67"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:00]} dxe4 {[%emt 0:00:00]} 4. Nxe4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:03]} 5. Nxf6+ {[%emt 0:00:00]} exf6 {[%emt 0:00:25]} 6. c3 {[%emt 0:00:31]} Bd6 {[%emt 0:00:05]} 7. Bd3 {[%emt 0:00:25]} O-O {[%emt 0:00:07]} 8. Qc2 {[%emt 0:00:22]} Re8+ {[%emt 0:00:02]} 9. Ne2 {[%emt 0:00:09]} h5 {[%emt 0:00:07]} 10. O-O {[%emt 0:00:11]} Be6 {[%emt 0:06:45]} 11. Bf4 {[%emt 0:09:33]} Qc7 {[%emt 0:03:45]} 12. Bxd6 {[%emt 0:00:19]} Qxd6 {[%emt 0:00:01]} 13. Rae1 {[%emt 0:13:33]} Nd7 {[%emt 0:07:53]} 14. f4 {[%emt 0:02:18]} Nb6 {[%emt 0:03:27]} 15. f5 {[%emt 0:00:16]} Bc4 {[%emt 0:02:37]} 16. b3 {[%emt 0:06:47]} Bxd3 {[%emt 0:05:13]} 17. Qxd3 {[%emt 0:00:11]} Nd5 {[%emt 0:19:12]} 18. Ng3 {[%emt 0:10:19]} Rxe1 {[%emt 0:06:06]} 19. Rxe1 {[%emt 0:00:10]} h4 {[%emt 0:01:10]} 20. Nh5 {[%emt 0:00:40]} Nf4 {[%emt 0:05:10]} 21. Nxf4 {[%emt 0:01:11]} Qxf4 {[%emt 0:01:30]} 22. a4 {[%emt 0:07:49]} Rd8 {[%emt 0:02:27]} 23. b4 {[%emt 0:05:09]} a5 {[%emt 0:08:12]} 24. b5 {[%emt 0:23:34]} c5 {[%emt 0:02:11]} 25. Qe4 {[%emt 0:03:38]} Qd2 {[%emt 0:13:57]} 26. Qe3 {[%emt 0:06:34]} Qxe3+ {[%emt 0:01:35]} 27. Rxe3 {[%emt 0:00:16]} cxd4 {[%emt 0:00:02]} 28. Rd3 {[%emt 0:00:05]} Rd5 {[%emt 0:01:28]} 29. Rxd4 {[%emt 0:00:18]} Rxd4 {[%emt 0:12:18]} 30. cxd4 {[%emt 0:00:02]} Kf8 {[%emt 0:00:01]} 31. Kf2 {[%emt 0:00:26]} Ke7 {[%emt 0:00:04]} 32. Ke3 {[%emt 0:00:13]} Kd6 {[%emt 0:00:02]} 33. Ke4 {[%emt 0:00:20]} g6 {[%emt 0:10:31]} 34. g3 {[%emt 0:05:45]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "2.9"]
[White "Yanayt, Eugene"]
[Black "Dill, James"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2079"]
[BlackElo "1823"]
[Annotator "NA"]
[PlyCount "67"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:04]} 4. g3 {[%emt 0:00:06]} dxc4 {[%emt 0:00:22]} 5. Bg2 {[%emt 0:00:19]} Nc6 {[%emt 0:00:14]} 6. O-O {[%emt 0:00:18]} Rb8 {[%emt 0:00:34]} 7. Nc3 {[%emt 0:00:26]} b5 {[%emt 0:01:07]} 8. Ne5 {[%emt 0:00:32]} Nxe5 {[%emt 0:01:52]} 9. dxe5 {[%emt 0:00:05]} Ng4 {[%emt 0:06:00]} 10. Qxd8+ {[%emt 0:21:10]} Kxd8 {[%emt 0:00:09]} 11. Rd1+ {[%emt 0:00:09]} Ke7 {[%emt 0:00:19]} 12. Bf4 {[%emt 0:10:11]} Rg8 {[%emt 0:09:23]} 13. Ne4 {[%emt 0:07:22]} Bb7 {[%emt 0:29:10]} 14. Ng5 {[%emt 0:24:33]} Bxg2 {[%emt 0:10:54]} 15. Kxg2 {[%emt 0:00:13]} h6 {[%emt 0:00:53]} 16. Nf3 {[%emt 0:08:53]} g5 {[%emt 0:08:16]} 17. Bd2 {[%emt 0:01:37]} Bg7 {[%emt 0:14:34]} 18. Bb4+ {[%emt 0:00:13]} Ke8 {[%emt 0:00:14]} 19. a4 {[%emt 0:00:42]} Nxe5 {[%emt 0:20:08]} 20. Nd4 {[%emt 0:06:25]} Bf8 {[%emt 0:06:47]} 21. Ba5 {[%emt 0:01:29]} Rb7 {[%emt 0:02:55]} 22. Nxb5 {[%emt 0:02:40]} Nc6 {[%emt 0:02:38]} 23. Bxc7 {[%emt 0:02:29]} a6 {[%emt 0:01:06]} 24. Nd6+ {[%emt 0:06:28]} Bxd6 {[%emt 0:00:08]} 25. Bxd6 {[%emt 0:00:05]} Rxb2 {[%emt 0:02:23]} 26. Rac1 {[%emt 0:01:04]} Ne7 {[%emt 0:02:57]} 27. Rxc4 {[%emt 0:03:22]} f5 {[%emt 0:01:12]} 28. Rc7 {[%emt 0:03:47]} Nd5 {[%emt 0:00:41]} 29. Ra7 {[%emt 0:00:19]} Rb6 {[%emt 0:03:26]} 30. Rc1 {[%emt 0:04:23]} Kd8 {[%emt 0:01:37]} 31. Ra8+ {[%emt 0:02:44]} Kd7 {[%emt 0:00:13]} 32. Rxg8 {[%emt 0:00:08]} Kxd6 {[%emt 0:00:12]} 33. Rgc8 {[%emt 0:02:52]} f4 {[%emt 0:01:37]} 34. a5 {[%emt 0:01:19]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.1"]
[White "Liang, Jason"]
[Black "Prasanna Raghuram Rao"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2351"]
[BlackElo "2435"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,64,39,44,32,30,13,25,0,7,-4,34,0,5,6,29,18,70,66,64,6,118,109,103,99,105,98,210,233,202,154,150,143,138,145,182,145,124,118,117,100,121,62,343,340,344,334,320,311,285,0,29992,0,0,0,29992,0,0]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Qc7 5. O-O Nf6 6. Qe2 {B40: Sicilian: 2...e6, Unusual lines.} Be7 $1 {[%mdl 4] is now more promising than 6...d6.} 7. c3 d5 8. e5 {White has an edge.} Nd7 {[%cal Rd7e5]} 9. d4 b6 {[#]} 10. Rd1 $146 ({Predecessor:} 10. Na3 h6 11. h4 Bb7 12. Nb5 Qb8 13. Bf4 Ba6 14. Nd6+ Qxd6 15. Qxa6 Qc7 16. Qe2 {1-0 (36) Rozentalis,E (2509)-Pritchett,C (2326) Dundee 2017}) 10... Bb7 11. Bf4 h6 12. h4 O-O-O (12... a6 $11) 13. Na3 $14 a6 14. c4 (14. h5 $14) 14... Nb4 (14... g5 $1 $11 15. hxg5 hxg5 16. Bxg5 Nxd4 17. Rxd4 Bxg5 18. Nxg5 cxd4 19. Nxf7 {[%mdl 64] Double Attack} d3) 15. cxd5 $16 Nxd5 16. Bd2 Kb8 17. Rac1 Qc6 (17... a5 $16 {was called for.}) 18. dxc5 $1 $18 bxc5 19. b4 Qa4 20. bxc5 $1 Rc8 ({Reject} 20... Bxc5 21. Nc4 $16) 21. Nc4 Bxc5 22. Nd6 Bxd6 23. exd6 Rxc1 24. Rxc1 Rc8 {[#]} 25. Ne5 (25. Re1 $1 $16) 25... Nxe5 $4 {[%mdl 8192]} ({Black should play} 25... Rxc1+ $14 26. Bxc1 f6 27. Nxd7+ Qxd7) 26. Qxe5 Rxc1+ 27. Bxc1 {Intending d7+ and mate.} Qd1+ 28. Kh2 Nf6 {( -> ...Ng4+!)} 29. Qb2 $2 (29. d7+ $1 $18 Ka8 {[#]} 30. Qe2 $3 {[%mdl 512]} Qxd7 31. Qxa6+ Kb8 32. Bxb7 {[%mdl 64] Overworked Piece} Qxb7 33. Qd6+ (33. Bf4+ Kc8 $14) 33... Qc7 34. Qf8+ Kb7 35. Qxg7) 29... Ng4+ $11 30. Kh3 {[%csl Gg2][%cal Rb2b7]} Nxf2+ $1 31. Kh2 {[%csl Gg2][%cal Rb2b7]} Ng4+ 32. Kh3 {[%csl Gg2][%cal Rb2b7]} Nf2+ $1 {Weighted Error Value: White=0.27/Black=0.39} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.2"]
[White "Chiu, Isaac"]
[Black "Park, Evan"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "2195"]
[BlackElo "2208"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,118,39,0,8,8,18,12,27,13,39,52,51,33,56,34,89,58,46,63,47,56,73,71,85,68,93,0,10,0,0,0,-5,-6,-5,-12,-4,-12,-16,-40,50,49,90,-135,-139,-141,-114,-208,-183,-275,-190,-256,-195,-189,-193,-312,-296,-303,-295,-256,-256,-256,-256,-319,-319,-421,-409,-416,-416,-401,-401,-391,-391,-584,-571,-960,-938,-835,-793,-1353,-1077,-29968,-29968,-29974,-29975,-29975,-29975,-29975,-29976,-29976,-29977,-29972,-12535,-29979,-29980,-29980,-29977,-29981,-29980]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O e5 8. d5 Ne7 9. e4 Ne8 10. Ne1 f5 11. Nd3 Nf6 12. f4 fxe4 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} 13. fxe5 Bg4 14. Qd2 dxe5 {[#] The position is equal.} (14... Nd7 {feels hotter.} 15. Rxf8+ Qxf8 16. Nxe4 Nxe5 17. Nxe5 Bxe5 18. Rb1 Re8) 15. Nc5 $146 ({Predecessor:} 15. Nxe4 Nxe4 16. Rxf8+ Qxf8 17. Bxe4 Nf5 18. Qb4 Qxb4 19. Nxb4 Nd6 20. Bd3 e4 21. Bf1 {0-1 (35) Gonzalez Culi,D (2036)-Olivares Olivares,C (2354) Santiago de Chile 2018}) 15... b6 (15... e3 $5 {[%cal Re3d2]} 16. Qe1 (16. Qxe3 Nf5 $11) 16... e2 17. Nxe2 Qd6 $11) 16. N5xe4 Nxe4 17. Rxf8+ Qxf8 18. Nxe4 Rd8 (18... Rb8 $14) 19. Qd3 Bf5 20. Bg5 h6 21. Bd2 c6 {[%cal Rc6d5]} 22. Bb4 a5 23. Ba3 b5 24. Bxe7 ({Don't play} 24. cxb5 $6 cxd5 25. Qb3 a4 $11) (24. Bc5 $1 $16) 24... Qxe7 $11 25. d6 Qa7+ 26. Kh1 Qd4 27. Qxd4 exd4 28. c5 d3 $36 {[%mdl 2048] Black is more active.} 29. Rd1 Re8 30. Nd2 Re5 (30... Bd7 $15) 31. Bxc6 Rxc5 {[#]} 32. Be4 (32. d7 $1 $16 Bf6 33. Ne4 $1 Bxe4+ 34. Bxe4) 32... Bxb2 $17 {Black continues to play with concentration.} 33. Bxf5 Rxf5 {[%mdl 4096] Endgame KRB-KRN} 34. Ne4 (34. Nb3 $17 {keeps fighting.} Rd5 35. Nxa5) 34... Rd5 $19 35. Nf2 (35. Kg2 $142) 35... Rxd6 36. Nxd3 (36. Rxd3 {might work better.} Rc6 37. Rd2) 36... Bf6 37. Kg2 b4 {Threatens to win with ...a4.} 38. Kf3 (38. Kf2 $142) 38... a4 {[%cal Ba5a4,Ba4b3,Bb3b2][%mdl 32]} 39. Ke2 Re6+ 40. Kf3 {[#]} b3 {[%cal Rb3a2]} 41. axb3 axb3 42. Nc5 Rc6 43. Ne4 Bg7 44. Rd8+ Kh7 45. Rb8 b2 46. Rb7 g5 47. h4 (47. Nd2 $142) 47... Rc1 48. Nf6+ Kg6 49. Rxb2 Bxf6 {KRB-KR} 50. Rb6 Rc3+ 51. Kg2 g4 52. Rb5 h5 53. Rd5 Re3 54. Kf2 Rf3+ 55. Kg2 Rf5 56. Rd7 Ra5 57. Rd2 Be5 {Black mates.} 58. Rd3 Kf5 59. Re3 Rc5 {Weighted Error Value: White=0.64/Black=0.14} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.3"]
[White "Paul, Justin"]
[Black "Tunc, Skyler"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2249"]
[BlackElo "1779"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,4,14,9,19,14,45,36,70,66,78,72,95,103,123,72,114,124,146,151,198,177,217,187,180,126,441,419,547,516,621,589,563,348,716,692,705,689,639,587,597,576,745,740,715,691,1360,1351]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Bxc5 6. Bd3 {B12: Caro-Kann: Advance Variation.} Nd7 (6... Nc6 {feels hotter.} 7. Nf3 Qc7 8. Bf4 Nf6 9. Qe2 Nd7) 7. Nf3 Qc7 8. Qe2 {White is slightly better.} Ne7 9. b4 $1 {[%cal Rb4c5]} Bb6 {[#]} 10. Bb2 $146 ({Predecessor:} 10. Nbd2 Ng6 11. Bxg6 fxg6 12. c4 dxc4 13. Nxc4 O-O 14. O-O Qc6 15. Bb2 Rd8 16. Nd6 {1-0 (31) Margolin,B (2427)-Schubert,T (2366) Germany 2005}) 10... Nf8 11. h4 Bd7 12. O-O (12. Nbd2 $142) 12... Rc8 13. h5 g6 14. Nbd2 Rg8 15. c4 {c5 is the strong threat.} Qd8 16. c5 Bc7 17. Ng5 ({White should play} 17. h6 $18) 17... Nf5 $2 {[%mdl 8192] [#] A mistake that costs the game.} (17... h6 $16 {is tougher.}) 18. Nge4 $1 $18 {[%mdl 512]} Ke7 (18... dxe4 19. Nxe4) 19. Nf6 Rg7 20. h6 Nxh6 21. Qe3 g5 $2 (21... Nf5 22. Qg5 h6 23. Nxd5+ Ke8 24. Nf6+ Ke7 25. Nd5+ {[%mdl 64] Discovered Attack (Double check)} Ke8 26. Qxd8+ Bxd8) 22. c6 {[%mdl 64] Discovered Attack. White is clearly winning.} Bb6 23. Qh3 Ng8 24. cxd7 Nxd7 25. Bxh7 d4 26. Nxg8+ Rxg8 27. Bxg8 Rc2 {[#]} 28. Qh7 $1 {[%csl Gg8][%cal Rh7f7] Weighted Error Value: White=0.20/Black=0.64} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.4"]
[White "Altman, Joshua"]
[Black "Singh, Hersh"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "1926"]
[BlackElo "2080"]
[Annotator "RC"]
[PlyCount "88"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:01:32]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:05]} e6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:07]} Nf6 {[%emt 0:00:00]} 4. cxd5 {[%emt 0:00:06]} exd5 {[%emt 0:00:00]} 5. Bg5 {[%emt 0:00:06]} c6 {[%emt 0:00:00]} 6. Qc2 {[%emt 0:00:36]} Be7 {[%emt 0:00:00]} 7. e3 {[%emt 0:00:15]} Nbd7 {[%emt 0:00:00]} 8. Bd3 {[%emt 0:00:32]} Nf8 {[%emt 0:00:00]} 9. Nge2 {[%emt 0:04:06]} Ne6 {[%emt 0:00:04]} 10. Bh4 {[%emt 0:00:22]} g6 {[%emt 0:00:05]} 11. O-O {[%emt 0:00:44]} O-O {[%emt 0:00:04]} 12. f3 {[%emt 0:03:29]} b6 {[%emt 0:00:06]} 13. Rad1 {[%emt 0:04:52]} Bb7 {[%emt 0:00:05]} 14. Kh1 {[%emt 0:04:03]} Nh5 {[%emt 0:00:24]} 15. Bf2 {[%emt 0:16:09]} f5 {[%emt 0:01:58]} 16. Nc1 {[%emt 0:17:29]} Rc8 {[%emt 0:09:09]} 17. Be2 {[%emt 0:11:09]} Nf6 {[%emt 0:14:45]} 18. Nd3 {[%emt 0:13:57]} c5 {[%emt 0:06:36]} 19. Qb1 {[%emt 0:25:45]} Qe8 {[%emt 0:14:57]} 20. Ne5 {[%emt 0:11:37]} Bd6 {[%emt 0:05:19]} 21. f4 {[%emt 0:02:07]} cxd4 {[%emt 0:06:18]} 22. Nb5 {[%emt 0:03:30]} Bb8 {[%emt 0:03:29]} 23. Nxd4 {[%emt 0:01:14]} Bxe5 {[%emt 0:04:02]} 24. fxe5 {[%emt 0:00:37]} Ne4 {[%emt 0:00:04]} 25. Bd3 {[%emt 0:02:27]} N6c5 {[%emt 0:01:19]} 26. Nf3 {[%emt 0:04:38]} Qe6 {[%emt 0:08:38]} 27. Bg3 {[%emt 0:00:52]} Nxg3+ {[%emt 0:01:36]} 28. hxg3 {[%emt 0:00:03]} Ne4 {[%emt 0:00:02]} 29. Bxe4 {[%emt 0:01:06]} fxe4 {[%emt 0:04:08]} 30. Nd4 {[%emt 0:00:10]} Qxe5 {[%emt 0:00:16]} 31. Rxf8+ {[%emt 0:00:32]} Rxf8 {[%emt 0:00:02]} 32. Rf1 {[%emt 0:00:33]} Qxg3 {[%emt 0:13:43]} 33. Rxf8+ {[%emt 0:00:34]} Kxf8 {[%emt 0:00:01]} 34. Qf1+ {[%emt 0:00:38]} Ke7 {[%emt 0:00:32]} 35. Qc1 {[%emt 0:00:25]} Qe5 {[%emt 0:01:30]} 36. Qc3 {[%emt 0:00:22]} Kf7 {[%emt 0:00:46]} 37. Qc2 {[%emt 0:00:52]} Kg7 {[%emt 0:01:35]} 38. Qa4 {[%emt 0:00:36]} Kh6 {[%emt 0:13:59]} 39. Qxa7 {[%emt 0:00:23]} Qc7 {[%emt 0:03:54]} 40. Ne6 {[%emt 0:00:34]} Qc6 {[%emt 0:01:52]} 41. Nd4 {[%emt 0:00:36]} Qc1+ {[%emt 0:02:45]} 42. Kh2 {[%emt 0:00:03]} Qxe3 {[%emt 0:00:16]} 43. Ne6 {[%emt 0:00:58]} Qf2 {[%emt 0:14:51]} 44. Qxb7 {[%emt 0:00:06]} Qh4+ {[%emt 0:00:44]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.5"]
[White "Kanli, Alperen"]
[Black "Peraino, Andrew"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "1911"]
[BlackElo "2029"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,122,28,53,49,84,79,99,86,91,87,79,39,84,82,70,75,79,70,78,72,66,81,58,96,122,122,141,122,135,136,130,125,166,143,153,145,195,172,204,124,137,137,141,129,121,143,234,215,425,400,304,136,128,142,139,139,254,227,221,152,169,161,170,156,237,241,287,272,293,255,310,302,417,379,516,513,606,592,577,587,632,632,625,518,591,771,718,718,29970,29973,29973,29974,29973,0,0,0,0,0,0,0,0,0,29975,29975,29975,844,29968,29969,29968,29969,6825,2522,1667,0,0]} 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nd7 5. f4 c5 6. d5 {A42: Modern Defence: Averbakh Variation.} a6 7. Nf3 Qc7 8. Be2 {White is better.} Ngf6 9. O-O O-O {[#]} 10. Be3 $146 ({Predecessor:} 10. Bd2 h6 11. Re1 Re8 12. Qc2 Nf8 13. e5 N6h7 14. exd6 exd6 15. h3 Bd7 16. Bd3 b5 17. Ne4 {0-1 (43) Charalambous,C (1660)-Rozhkov,M (1818) Nikosia 2015}) 10... Ng4 11. Bd2 b5 12. h3 b4 13. hxg4 {Na4 is the strong threat.} bxc3 14. Bxc3 Bxc3 15. bxc3 Nf6 16. Nd2 Rb8 17. g5 Nd7 18. Rb1 Rxb1 19. Qxb1 Qa5 20. Qc2 Nb6 21. f5 Na4 22. Rf3 Bd7 23. Nb3 Qc7 24. f6 Bg4 25. Re3 Bxe2 26. Qxe2 ({But not} 26. Rxe2 Nb6 $14) 26... exf6 27. gxf6 {Black must now prevent Qd2.} Re8 (27... Nb6 $16 {might work better.}) 28. Qg4 {aiming for Qf4!} Qd8 $2 (28... Nb6 29. Qf4 Nd7) 29. Qf4 $18 Re5 {[#]} 30. Nd2 (30. Na5 $1 $18 {[%mdl 512] has better winning chances.}) 30... Nb6 $16 31. Nf3 Nxc4 32. Nxe5 dxe5 {[%mdl 4096] Endgame KQR-KQN} (32... Nxe5 $16 33. Re2 Nd3) 33. Qh6 $18 {[%csl Gf6][%cal Rh6g7]} Qxf6 34. Rf3 $40 {[%mdl 128] Black is in trouble.} Qe7 35. Rh3 $1 f6 36. Rf3 $1 Nd6 (36... a5 $16 37. Rf2 Nd6) 37. Qe3 $1 Nf7 38. Qd3 Qd6 39. Rf1 Kg7 40. a4 Ng5 41. Rb1 f5 42. exf5 e4 43. Qe3 h6 44. f6+ {[%mdl 64] Decoy} Kxf6 45. Qf2+ Kg7 46. c4 Qe5 47. Rb7+ Kg8 48. Qb2 Nf3+ 49. gxf3 Qg3+ 50. Kf1 {[%csl Gb7][%cal Rb2g7]} Qxf3+ {[#]} 51. Ke1 $2 (51. Qf2 $1 {mates} Qd1+ 52. Kg2 Qg4+ 53. Kh2 Qh5+ 54. Kg1 Qg4+ 55. Qg2 Qd1+ 56. Qf1 Qg4+ 57. Kf2 Qf5+ 58. Ke1) 51... Qh1+ $11 52. Kd2 {[%csl Gb7][%cal Rb2g7]} Qg2+ 53. Ke1 {[%csl Gb7][%cal Rb2g7]} Qh1+ 54. Kf2 {[%csl Gb7][%cal Rb2g7]} (54. Kd2 {is more complex.}) 54... Qf3+ 55. Kg1 {[%csl Gb7][%cal Rb2g7]} Qg3+ $2 {[%mdl 8192]} (55... Qd1+ $11 56. Kf2 Qf3+ 57. Kg1 Qd1+ 58. Kh2 Qh5+ 59. Kg3 Qf3+ 60. Kh2 Qh5+ 61. Kg1 Qd1+) 56. Qg2 Qe1+ 57. Kh2 (57. Qf1 $142 Qg3+ 58. Kh1 Qh4+ 59. Kg2 Qg5+ 60. Kf2 Qd2+ 61. Qe2 Qf4+ 62. Kg2) 57... Qh4+ 58. Qh3 Qf2+ {[#]} 59. Kh1 $1 Qe1+ 60. Kg2 {[%cal Rh3c8]} Qe2+ 61. Kg3 $2 (61. Kg1 $18 {[%cal Rh3c8]} Qe1+ 62. Qf1 Qg3+ 63. Kh1 Qh4+ 64. Kg2 Qg5+ 65. Kf2 Qd2+ 66. Kg1 Qg5+ 67. Qg2 Qe3+ 68. Qf2 Qg5+ 69. Kf1 Qc1+ 70. Kg2 Qg5+ 71. Qg3) 61... Qf3+ {Weighted Error Value: White=0.21/Black=0.57} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.6"]
[White "Brady, Tyson"]
[Black "Yanayt, Eugene"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1868"]
[BlackElo "2079"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,66,5,5,13,14,26,8,23,11,29,-47,-10,0,0,-10,22,0,20,18,20,16,8,12,16,13,23,-17,-12,-31,0,-12,25,18,22,-29,65,-16,0,-8,0,0,0,-451,-429,-549,-522,-903,-890,-877,-866,-835,-824,-825,-427,-745,-739]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bxd7+ Bxd7 6. d4 cxd4 7. Qxd4 Rc8 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} (7... e5 $5 {[%cal Re5d4]} 8. Qd3 h6 $11) 8. Nc3 e5 9. Qd3 h6 {The position is equal.} 10. Nd2 Qc7 {[#]} 11. f4 $146 (11. a4 $11) ({Predecessor:} 11. Rd1 Nf6 12. Nf1 Bg4 13. Re1 Be7 14. Ne3 Be6 15. a4 O-O 16. Bd2 Qc5 17. Red1 {½-½ (31) Adams,M (2701)-Wojtaszek,R (2719) Biel 2020}) 11... exf4 12. Rxf4 Be6 13. Nb3 Ne7 14. Nd4 Bc4 15. Qd1 g6 16. Be3 Bg7 17. Qd2 O-O 18. Rf2 Kh7 19. Nf3 b5 20. Rd1 Rcd8 21. Nd4 Qb7 22. b3 b4 23. Nce2 (23. Na4 $142 Bb5 24. Re1) 23... Bb5 (23... Bxe2 $11 24. Qxe2 Ng8) 24. Rdf1 ({White should try} 24. Nxb5 $14 Qxb5 25. Rdf1) 24... Bxe2 $11 25. Qxe2 Qxe4 {[#] aiming for ...Nd5.} 26. Rxf7 Nf5 27. R1xf5 {[%mdl 8192]} (27. Rxf8 $11 Rxf8 28. Nxf5 Rxf5 29. Rxf5 Qxf5 30. Qd3) 27... gxf5 $19 {Black is clearly winning.} 28. Rxf8 Rxf8 29. Qd2 Re8 30. Bf2 Bxd4 {[%mdl 64] [#] Overworked Piece} 31. Bxd4 Qe1+ 32. Qxe1 Rxe1+ 33. Kf2 Rc1 {Weighted Error Value: White=0.75/Black=0.14} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.03"]
[Round "3.7"]
[White "Lee, Justin"]
[Black "Johnson, Donald"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1953"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,64,26,22,33,29972,29973,6014,6010,2662,2666,2081,1940,1940,1185,1837,1803,1528,1162,1273,1263,1251,1252,1443,1446,1420,1405,1459,1434,29990,29991,5697,1459,1448,1444,29987,29988,29995,29996,29996,29997,29997,29998,29998,29999,29999]} 1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Nh3 e5 7. O-O Nge7 8. f4 O-O 9. f5 gxf5 10. exf5 Bxf5 11. Rxf5 Nxf5 12. Be4 $1 {[%cal Re4f5] B25: Closed Sicilian: 3 g3, lines without early Be3.} Nfe7 {[%mdl 8192] [#]} (12... Nxg3 $14 13. hxg3 f5 14. Bd5+ Kh8) 13. Bxh7+ $1 {[%mdl 512]} Kxh7 14. Qh5+ {White is clearly winning.} Kg8 15. Ng5 {[%csl Gg5][%cal Rh5h7]} Re8 16. Qxf7+ Kh8 17. Ne6 {[%csl Ge6][%cal Rf7g7] [#]} Bf8 $146 ({Predecessor:} 17... Rf8 18. Qxg7# {1-0 (18) Kokolias,K (2200)-Sigouros,I Nikea 2004}) 18. Bg5 {White wants to mate with Bf6+.} Ng8 19. Bxd8 {White threatens Qh5+ and mate.} Raxd8 20. Nxd8 Rxd8 21. Rf1 Bh6 22. Qxb7 Nge7 23. Rf7 Be3+ 24. Kh1 Rb8 25. Qd7 Kg8 26. Rxe7 Nxe7 27. Qxe7 Rxb2 28. Nd5 {White mates.} Bg5 29. Qxg5+ Kf7 30. Qf6+ {[%mdl 64] Double Attack} Kg8 31. Ne7+ Kh7 32. Qg6+ Kh8 33. Qg8# {Black did not feel at home in the position after the opening. Not enough moves} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.8"]
[White "Zaloznyy, Mike"]
[Black "Taylor, Stewart"]
[Result "1-0"]
[ECO "D98"]
[WhiteElo "1996"]
[BlackElo "1918"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,99,-27,39,20,59,2,41,28,69,62,63,46,97,91,139,87,104,95,149,48,122,119,127,125,121,125,153,135,144,137,147,174,160,186,165,125,103,121,116,60,95,53,110,66,80,32,167,68,55,0,0,0,0,50,161,179,134,33,135,75,384,394,383,378,340,345,402,447,438,399,399,381,473,509,500,265,265,265,245,265,265,265,265,265,790,777]} 1. Nf3 g6 2. c4 Bg7 3. d4 Nf6 4. Nc3 d5 5. Qa4+ Bd7 6. Qb3 dxc4 7. Qxc4 O-O 8. e4 Bg4 (8... b5 $11 9. Qd3 (9. Nxb5 Nxe4 10. Bd3 Nd6 $15) 9... b4) 9. Be2 {D98: Grünfeld: Russian System: 7 e4 Bg4 .} Nbd7 10. Bf4 ({Better is} 10. Be3 $14) 10... c6 11. Rd1 {[#] White is slightly better.} Rc8 $146 ({Predecessor:} 11... Qb6 12. Rd2 c5 13. d5 Nh5 14. Be3 Qd6 15. h3 Bxf3 16. Bxf3 Ne5 17. Qe2 Nxf3+ 18. Qxf3 f5 19. exf5 Rxf5 {1-0 (38) Nihal,S (2349)-Saravanan,V (2272) Zalakaros 2016}) 12. O-O b5 13. Qb3 a5 (13... Qe8 $14) 14. h3 $16 Be6 15. Qc2 (15. d5 $142 cxd5 16. exd5) 15... Nb6 16. b3 h6 (16... Ne8 $142) 17. a4 (17. Be3 $16) 17... Qd7 (17... b4 $14) 18. Be3 (18. axb5 $6 cxb5 19. Ne5 Qc7 $11) 18... b4 19. Nb1 Nxe4 20. Ne5 $1 {[%cal Re5d7]} Qc7 21. Qxe4 Bxb3 22. Rc1 {[%cal Re5c6]} Bd5 23. Qh4 g5 24. Qh5 Nxa4 25. h4 Bxe5 26. dxe5 Qxe5 27. hxg5 (27. Qxh6 $16 Qg7 28. hxg5 (28. Qxg5 Qxg5 29. Bxg5 f6 $16) (28. Bxg5 f6 $16)) 27... hxg5 28. Bxg5 Qg7 (28... Qe4 $14 29. Bf3 Qg6) 29. Bc4 {Strongly threatening Bxd5.} Rfd8 30. Qh4 f6 {[#]} (30... Qg6 $14) 31. Bxd5+ (31. Qh3 $1 $18 Nb6 32. Bxd5+ cxd5 33. Bh6) 31... Rxd5 $14 {[#]} 32. Bh6 (32. Qh3 $1 $14 Rcd8 (32... Re8 33. Bh6) 33. Bf4 (33. Bh6 Qg6 $14)) 32... Qg6 $11 33. Qh3 Nb6 34. Be3 Nd7 (34... Kg7 $14) 35. Rfd1 $36 {[%mdl 2048] Keeping Black busy.} Rd8 36. f4 (36. Rxd5 $16 cxd5 37. Nd2) 36... Nb6 37. Rf1 ({White should play} 37. Re1 Nd7 38. Qe6+ (38. Rxc6 Rh5 $16) 38... Qf7 39. Qxc6) 37... Rd3 $2 {[%mdl 8192]} 38. Qe6+ {[%mdl 64] Double Attack} Qf7 39. Qxf7+ Kxf7 40. Bxb6 Ra8 41. Bc5 Rb8 42. Rc4 Rb5 43. Re1 e6 44. Kf2 a4 45. Re2 Rd1 46. Nd2 ({Don't play} 46. Rxb4 $6 Rxb4 47. Bxb4 Rxb1 $18) 46... b3 {And now ...b2 would win.} 47. f5 $1 {[%cal Rf5e6]} (47. Rxa4 b2 $11) 47... exf5 {[#] ...b2 is the strong threat.} 48. Re7+ $1 ({Inferior is} 48. Rxa4 b2 $11) 48... Kg6 49. Nf3 f4 $2 {[#]} (49... Rh1 50. Bd4 c5) 50. Nh4+ $1 {Weighted Error Value: White=0.29/Black=0.45} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "3.9"]
[White "Cardwell, Guy"]
[Black "Lu, Jason"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1904"]
[BlackElo "2068"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,130,3,18,30,26,3,77,86,77,67,71,73,65,69,97,48,139,129,139,135,130,64,63,59,60,64,87,59,63,37,78,64,94,89,93,85,85,94,107,86,91,98,93,85,85,85,85,85,91,93,97,91,82,82,94,90,84,37,37,47,61,35,70,0,2,7,12,0,8,0,8,15,20,0,0,-10,-10,-10,-11,-11,0,0,0,-2,0,0,4,-34,-34,-58,0,-44,-35,-189,-179,-204,-204,-156,-156,-156,-156,-1843,-1788,-1788,-2009,-29981,-407,-1729,-1729,-1371,-1167,-569,0,-1235,-1042,-29979,-29980,-29975,-29976,-29985,-29986,-29990,-29991]} 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2 g6 6. b3 {B23: Closed Sicilian: Lines without g3.} Bh6 7. f4 e5 (7... Nf6 $11) 8. Nb5 $1 $16 {White is better.} Bxf4 9. Qxd6 Qxd6 ({Don't blunder} 9... Qh4+ $2 10. g3 $18) 10. Nxd6+ Kf8 11. Ba3 Nge7 12. Bd3 {[#]} b6 $146 ({Black should try} 12... Kg7 $14) ({Predecessor:} 12... Kg7 13. Ne2 Be3 14. Nc4 Bh6 15. O-O f6 16. Nd6 b6 17. Nxc8 Raxc8 18. Rf3 Rhf8 {1-0 (32) Ten Hertog,H (2482)-Visser,H (2249) Hilversum 2019}) 13. Ne2 $1 Be3 14. Rf1 $1 {[%cal Rf1f7]} Be6 15. Nxf7 Bxf7 $14 16. Bc4 Nd8 17. Rd1 {[%cal Ba1d1,Bd1d3,Bd3f3][%mdl 1056] And now Rxd8+! would win. White has compensation.} Bc5 18. b4 Be3 $1 {With the idea ...Kg7.} 19. Rd3 {Threatens to win with Bb2.} Bg5 20. Rdf3 Bf4 21. Bxf7 Kxf7 22. g3 {[%mdl 64] Pin} g5 {[#]} 23. Bb2 $1 Ng6 24. gxf4 gxf4 {[#]} 25. Nxf4 exf4 26. Rxf4+ Ke7 ({Don't go for} 26... Nxf4 $2 27. Rxf4+ Kg8 28. Rg4+ Kf7 29. Bxh8 $18) 27. Bxh8 Nxh8 28. Rh4 Nhf7 29. Rxh7 Rc8 30. Kd2 Rc4 31. c3 Rxe4 32. a4 a5 33. Kd3 Rg4 34. h3 Rg5 35. Rf4 Ke6 36. Kc4 (36. Kc2 $14) 36... Ne5+ 37. Kb3 {next h4 is good for White.} Ndf7 $1 38. Rhh4 Rg1 39. Rf2 Rb1+ 40. Rb2 Re1 41. Rd4 Nc6 42. Rc4 (42. Rdd2 {seems wilder.} Re3 43. b5 Nce5 44. Re2 Rxh3 45. Rb1) 42... Nfe5 43. Rh4 axb4 44. cxb4 Rd1 45. Ka2 Kd5 46. Rg2 Nf3 47. Rh5+ Kd4 48. Kb2 Nce5 49. Rh8 {Rd8+ is the strong threat.} Nd3+ (49... Nc4+ $1 $15 50. Kc2 Ne3+ 51. Kb2 Re1 52. Rd8+ Kc4) 50. Ka3 Nfe5 {aiming for ...Nc4+.} 51. Rd8+ $2 (51. a5 $15) 51... Kc3 $19 52. Rc8+ Nc4+ 53. Rxc4+ Kxc4 {[%mdl 4096] Endgame KRN-KR} 54. Rc2+ {[#]} Kd4 $1 {Strongly threatening ...Ra1+.} 55. Rc8 $2 (55. a5 $17) 55... Ra1+ 56. Kb3 Rb1+ 57. Ka3 Nxb4 (57... Nc1 $142 58. Rxc1 Rxc1 59. Kb2 Rh1 60. a5 b5 61. Kc2 Rxh3 62. Kd2 Rh2+ 63. Ke1 Ke3 64. Kd1 Rd2+ 65. Ke1 Rd6 66. Kf1 Rg6 67. a6 Rxa6 68. Kg2 Rg6+ 69. Kh3 Kf4 70. Kh2 Kf3 71. Kh1 Kf2 72. Kh2 Rh6#) 58. h4 (58. a5 $142 bxa5 59. Ka4 Ra1+ 60. Kb3) 58... Nd3 {( -> ...Nc1)} 59. Ka2 Rb2+ 60. Ka3 Rb1 (60... Rh2 $142 61. Rg8 Rh3) 61. Ka2 $1 {[%cal Ra2b1]} Rh1 62. Rh8 Kc3 {Black mates.} 63. Rc8+ Kb4 64. Rc6 Rh2+ 65. Ka1 Kb3 {Weighted Error Value: White=0.60/Black=0.26} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.1"]
[White "Prasanna Raghuram Rao"]
[Black "Paul, Justin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2435"]
[BlackElo "2249"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,94,-7,2,0,8,0,30,22,24,34,54,50,61,63,64,77,72,25,23,0,0,0,29,12,102,104,115,95,87,67,63,32,67,42,141,168,183,166,240,240,421,414,410,380,392,258,231,83,85,-8,0,0,0,0,0,-130,-7,-139,-41,-213,-210,-286,-262,-277,-282,-283,-287,-290,-277,-277,-274,-310,-318,-387,-387,-492,-502,-546,-424,-836,-809,-1068,-1065,-990,-955,-5820,-5727]} 1. d4 Nf6 2. Bg5 d5 3. Nd2 c5 4. e3 Nc6 5. c3 e6 6. Bd3 {D00: 1 d4 d5: Unusual lines.} Qb6 7. Rb1 Bd7 8. Ngf3 {White has an edge.} cxd4 9. exd4 Bd6 10. O-O Qc7 11. Re1 {[#]} h6 $146 ({Predecessor:} 11... Ng4 12. h3 h6 13. hxg4 hxg5 14. Nxg5 Bf4 15. Nh3 O-O-O 16. Nf3 Bd6 17. Rc1 Kb8 {1-0 (39) Hamblok,R (2293)-Hess,C (2100) Germany 2012}) 12. Bh4 Nh5 13. Bb5 (13. c4 {feels hotter.} Nf4 14. Bc2 g5 15. Bg3 Kf8 16. c5) 13... g5 14. Bg3 Nxg3 15. hxg3 O-O-O 16. c4 Kb8 (16... dxc4 $11 17. Nxc4 Bb4) 17. c5 $16 Be7 18. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} f6 19. a4 Ka8 20. Re3 Rb8 21. Reb3 e5 (21... h5 $14) 22. Bxc6 bxc6 23. b5 Bc8 (23... Bf5 $142) 24. dxe5 fxe5 $2 (24... cxb5 25. Nd4 (25. Rxb5 Rxb5 26. axb5 Bxc5 $14) (25. axb5 Bxc5 26. Nf1 fxe5 $11) 25... b4) 25. b6 $18 axb6 26. cxb6 Qd6 27. Qe2 e4 28. Ne1 (28. Nd4 $18 {is the precise move to win.} Bf6 29. Nf5 $1) 28... Kb7 $16 29. Rd1 (29. a5 $16 {Black must now prevent a6+.} Ra8 30. a6+ Rxa6 31. Qxa6+ $3 {[%mdl 512]} Kxa6 32. b7 Bxb7 33. Ra1+ Qa3 34. Rbxa3+ (34. Raxa3+ Bxa3 35. Rxa3+ Kb6 $14) 34... Bxa3 35. Rxa3+ Kb6 36. Rb3+ Kc7 37. Rc3) 29... Qf6 $1 $11 30. Rc1 Ra8 31. Rbc3 Bd7 32. Qd1 (32. f3 $1 $11 {remains equal.}) 32... Qd4 (32... Rhd8 $17 33. Qc2 Bb4) 33. Re3 (33. Qc2 $1 $11 {was the only way to keep the balance.} Qxa4 34. Nb3) 33... Rhd8 ({Much weaker is} 33... Qxa4 $6 34. Nc2 $11) (33... Qxb6 $2 34. Rb1 $18) (33... Rxa4 34. Nef3 $1 $18) (33... Bb4 $1 $17 34. Nxe4 Qxd1 35. Rxd1 Bf5) 34. a5 $2 {[#]} (34. Nd3 $1 $15 Qf6 35. Nc5+ Bxc5 36. Rxc5 Kxb6 37. Rec3) 34... Bb4 $1 $19 {[%mdl 64] Double Attack} ({Stronger than} 34... Rxa5 35. Nc4 $16) 35. Nb3 Qxd1 36. Rxd1 Bxa5 37. Nxa5+ Rxa5 38. f3 exf3 ({Not} 38... Kxb6 39. fxe4 Re8 40. Nc2 $19) 39. Nxf3 Bg4 40. Rb1 Rb5 41. Rxb5 cxb5 {[%mdl 4096] Endgame KRB-KRN} 42. Ne5 {[#]} d4 $1 {Black is clearly winning.} 43. Rb3 (43. Re4 Bf5) 43... Be6 44. Rf3 (44. Rxb5 $142 d3 45. Nxd3 Rxd3 46. Re5) 44... Bc4 45. Rf6 d3 {Strongly threatening ...d2.} 46. Nc6 Re8 47. Rd6 Kxb6 {What a bad dream for White.  Weighted Error Value: White=0.70/Black=0.26} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.2"]
[White "Miller, Daniel"]
[Black "Liang, Jason"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2182"]
[BlackElo "2351"]
[Annotator "ChessBase"]
[PlyCount "171"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} c6 {[%emt 0:05:09]} 2. Nc3 {[%emt 0:00:09]} d5 {[%emt 0:00:33]} 3. Nf3 {[%emt 0:00:09]} dxe4 {[%emt 0:08:46]} 4. Nxe4 {[%emt 0:00:50]} Nf6 {[%emt 0:00:09]} 5. Nxf6+ {[%emt 0:03:01]} exf6 {[%emt 0:00:13]} 6. d4 {[%emt 0:06:03]} Bd6 {[%emt 0:00:25]} 7. Be2 {[%emt 0:00:08]} O-O {[%emt 0:00:18]} 8. O-O {[%emt 0:00:08]} Bg4 {[%emt 0:01:29]} 9. h3 {[%emt 0:11:50]} Be6 {[%emt 0:02:00]} 10. Re1 {[%emt 0:04:15]} Re8 {[%emt 0:00:18]} 11. c4 {[%emt 0:06:34]} Na6 {[%emt 0:03:54]} 12. Be3 {[%emt 0:06:11]} Qd7 {[%emt 0:04:53]} 13. d5 {[%emt 0:08:58]} cxd5 {[%emt 0:00:27]} 14. cxd5 {[%emt 0:00:05]} Bxd5 {[%emt 0:01:27]} 15. Nd4 {[%emt 0:00:08]} Nc7 {[%emt 0:02:20]} 16. Bg4 {[%emt 0:08:20]} Ne6 {[%emt 0:08:51]} 17. Qd2 {[%emt 0:18:32]} Bf8 {[%emt 0:09:26]} 18. Red1 {[%emt 0:03:49]} Red8 {[%emt 0:08:10]} 19. Rac1 {[%emt 0:10:13]} Qe8 {[%emt 0:03:02]} 20. Qa5 {[%emt 0:09:11]} b6 {[%emt 0:12:37]} 21. Qa6 {[%emt 0:00:37]} Rd7 {[%emt 0:06:41]} 22. a3 {[%emt 0:16:20]} Bb7 {[%emt 0:03:54]} 23. Qa4 {[%emt 0:06:30]} Rxd4 {[%emt 0:12:58]} 24. Rxd4 {[%emt 0:00:03]} Nxd4 {[%emt 0:00:10]} 25. Qxe8 {[%emt 0:03:42]} Rxe8 {[%emt 0:00:08]} 26. Bxd4 {[%emt 0:00:10]} Bd6 {[%emt 0:00:19]} 27. Rd1 {[%emt 0:00:43]} Rd8 {[%emt 0:01:39]} 28. Bc3 {[%emt 0:01:26]} f5 {[%emt 0:01:38]} 29. Be2 {[%emt 0:00:08]} Bc7 {[%emt 0:00:31]} 30. Rc1 {[%emt 0:00:57]} Bf4 {[%emt 0:00:16]} 31. Rd1 {[%emt 0:00:49]} Rxd1+ {[%emt 0:01:55]} 32. Bxd1 {[%emt 0:00:02]} Bd5 {[%emt 0:00:12]} 33. Kf1 {[%emt 0:01:40]} Bd6 {[%emt 0:01:05]} 34. Bc2 {[%emt 0:00:37]} f4 {[%emt 0:00:25]} 35. Bd1 {[%emt 0:01:02]} f6 {[%emt 0:00:14]} 36. f3 {[%emt 0:00:26]} Be5 {[%emt 0:00:43]} 37. Be2 {[%emt 0:02:36]} Kf7 {[%emt 0:00:48]} 38. Bd3 {[%emt 0:00:06]} h6 {[%emt 0:00:40]} 39. Ke2 {[%emt 0:00:28]} Bxc3 {[%emt 0:00:31]} 40. bxc3 {[%emt 0:00:02]} Ke6 {[%emt 0:00:10]} 41. Kd2 {[%emt 0:00:17]} Kd6 {[%emt 0:00:10]} 42. c4 {[%emt 0:00:44]} Be6 {[%emt 0:00:17]} 43. Kc3 {[%emt 0:00:11]} Kc5 {[%emt 0:00:05]} 44. Bf1 {[%emt 0:00:53]} g5 {[%emt 0:03:34]} 45. Bd3 {[%emt 0:01:08]} h5 {[%emt 0:04:19]} 46. Be2 {[%emt 0:00:03]} Bd7 {[%emt 0:00:51]} 47. Bd1 {[%emt 0:00:05]} Bf5 {[%emt 0:00:40]} 48. Be2 {[%emt 0:00:07]} Be6 {[%emt 0:00:06]} 49. Bd3 {[%emt 0:00:49]} a6 {[%emt 0:11:50]} 50. Be2 {[%emt 0:00:37]} Bf5 {[%emt 0:00:11]} 51. Bf1 {[%emt 0:00:07]} g4 {[%emt 0:03:40]} 52. hxg4 {[%emt 0:01:15]} hxg4 {[%emt 0:00:06]} 53. Be2 {[%emt 0:00:09]} gxf3 {[%emt 0:00:34]} 54. gxf3 {[%emt 0:00:14]} Bh3 {[%emt 0:00:04]} 55. Kd3 {[%emt 0:00:26]} f5 {[%emt 0:00:12]} 56. Kc3 {[%emt 0:00:11]} Bg2 {[%emt 0:00:18]} 57. Kd3 {[%emt 0:00:13]} Kd6 {[%emt 0:01:10]} 58. Kd4 {[%emt 0:01:15]} Ke6 {[%emt 0:02:14]} 59. c5 {[%emt 0:02:15]} b5 {[%emt 0:05:54]} 60. c6 {[%emt 0:00:02]} Kd6 {[%emt 0:00:11]} 61. c7 {[%emt 0:00:04]} Kxc7 {[%emt 0:00:11]} 62. Ke5 {[%emt 0:00:03]} Kb6 {[%emt 0:00:41]} 63. Kxf4 {[%emt 0:00:49]} Ka5 {[%emt 0:00:50]} 64. Bd1 {[%emt 0:01:01]} Bh3 {[%emt 0:01:05]} 65. Be2 {[%emt 0:01:56]} Ka4 {[%emt 0:01:44]} 66. Kg3 {[%emt 0:00:04]} Kxa3 {[%emt 0:00:04]} 67. Kxh3 {[%emt 0:00:09]} Kb4 {[%emt 0:00:02]} 68. f4 {[%emt 0:00:29]} a5 {[%emt 0:00:04]} 69. Bd3 {[%emt 0:00:08]} a4 {[%emt 0:00:47]} 70. Bxf5 {[%emt 0:00:06]} Kc3 {[%emt 0:02:56]} 71. Be6 {[%emt 0:00:52]} Kd4 {[%emt 0:00:45]} 72. Kg4 {[%emt 0:00:42]} b4 {[%emt 0:00:04]} 73. f5 {[%emt 0:00:39]} b3 {[%emt 0:00:56]} 74. f6 {[%emt 0:00:32]} Ke5 {[%emt 0:00:30]} 75. f7 {[%emt 0:00:22]} b2 {[%emt 0:00:30]} 76. Ba2 {[%emt 0:00:09]} a3 {[%emt 0:00:24]} 77. f8=Q {[%emt 0:00:08]} b1=Q {[%emt 0:00:09]} 78. Bxb1 {[%emt 0:00:09]} a2 {[%emt 0:00:06]} 79. Qf4+ {[%emt 0:00:27]} Kd5 {[%emt 0:00:07]} 80. Bxa2+ {[%emt 0:00:06]} Kc5 {[%emt 0:00:12]} 81. Kf5 {[%emt 0:00:37]} Kb5 {[%emt 0:00:07]} 82. Ke5 {[%emt 0:00:12]} Kc5 {[%emt 0:00:08]} 83. Bd5 {[%emt 0:00:15]} Kb5 {[%emt 0:00:07]} 84. Kd6 {[%emt 0:00:10]} Ka6 {[%emt 0:00:11]} 85. Qb4 {[%emt 0:00:13]} Ka7 {[%emt 0:00:05]} 86. Qb7# {[%emt 0:00:08]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.3"]
[White "Park, Evan"]
[Black "Lee, Justin"]
[Result "0-1"]
[ECO "A31"]
[WhiteElo "2208"]
[BlackElo "1953"]
[Annotator "ChessBase"]
[PlyCount "68"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:41]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:07]} e6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:37]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:07]} a6 {[%emt 0:00:09]} 5. c4 {[%emt 0:01:13]} Nf6 {[%emt 0:00:19]} 6. Nc3 {[%emt 0:00:11]} Qc7 {[%emt 0:00:50]} 7. Be2 {[%emt 0:00:28]} b6 {[%emt 0:03:21]} 8. O-O {[%emt 0:02:54]} Bb7 {[%emt 0:07:01]} 9. f3 {[%emt 0:00:25]} d6 {[%emt 0:03:33]} 10. Be3 {[%emt 0:00:20]} Be7 {[%emt 0:00:24]} 11. a4 {[%emt 0:02:32]} O-O {[%emt 0:00:33]} 12. Qd2 {[%emt 0:04:35]} Nbd7 {[%emt 0:00:55]} 13. a5 {[%emt 0:06:35]} bxa5 {[%emt 0:06:28]} 14. Nb3 {[%emt 0:00:45]} d5 {[%emt 0:24:12]} 15. exd5 {[%emt 0:18:21]} exd5 {[%emt 0:01:35]} 16. Nxd5 {[%emt 0:03:34]} Bxd5 {[%emt 0:02:00]} 17. cxd5 {[%emt 0:00:19]} Bd6 {[%emt 0:11:02]} 18. f4 {[%emt 0:10:11]} Qb7 {[%emt 0:02:03]} 19. Bc4 {[%emt 0:09:52]} Nb6 {[%emt 0:00:42]} 20. Nxa5 {[%emt 0:03:15]} Nxc4 {[%emt 0:00:09]} 21. Nxb7 {[%emt 0:01:29]} Nxd2 {[%emt 1:05:14]} 22. Nxd6 {[%emt 0:02:29]} Nxf1 {[%emt 0:00:00]} 23. Rxf1 {[%emt 0:00:06]} Nxd5 {[%emt 0:00:00]} 24. Bc5 {[%emt 0:00:06]} Rab8 {[%emt 0:00:00]} 25. Ba3 {[%emt 0:00:17]} Rb3 {[%emt 0:00:00]} 26. g3 {[%emt 0:00:22]} Rd8 {[%emt 0:00:00]} 27. Rc1 {[%emt 0:01:36]} h5 {[%emt 0:00:00]} 28. Ne4 {[%emt 0:00:37]} Re8 {[%emt 0:00:00]} 29. Nd6 {[%emt 0:01:10]} Rd8 {[%emt 0:00:00]} 30. Ne4 {[%emt 0:00:05]} Re3 {[%emt 0:00:00]} 31. Nc5 {[%emt 0:00:56]} Nf6 {[%emt 0:00:00]} 32. Rc2 {[%emt 0:01:42]} Rc8 {[%emt 0:00:00]} 33. Kf2 {[%emt 0:00:43]} Rxa3 {[%emt 0:00:00]} 34. bxa3 {[%emt 0:00:03]} Rxc5 {[%emt 0:00:00]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.4"]
[White "Peraino, Andrew"]
[Black "Chiu, Isaac"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2029"]
[BlackElo "2195"]
[Annotator "NA"]
[PlyCount "72"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:53]} g6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:18]} Bg7 {[%emt 0:00:00]} 3. f4 {[%emt 0:00:43]} c5 {[%emt 0:00:00]} 4. c3 {[%emt 0:00:11]} cxd4 {[%emt 0:00:00]} 5. cxd4 {[%emt 0:00:10]} d5 $11 {[%emt 0:00:00]} 6. e5 {[%emt 0:00:28]} Nc6 {[%emt 0:00:00]} 7. Nc3 {[%emt 0:04:59]} Nh6 {[%emt 0:00:00]} 8. Be3 {[%emt 0:00:40]} O-O {[%emt 0:00:00]} 9. Qd2 {[%emt 0:07:20]} f6 {[%emt 0:06:12]} 10. Be2 {[%emt 0:05:55]} Be6 {[%emt 0:08:20]} 11. Rc1 {[%emt 0:04:58]} Nf5 {[%emt 0:04:46]} 12. Nf3 {[%emt 0:02:30]} Bh6 {[%emt 0:02:31]} 13. g4 {[%emt 0:11:34]} Nxe3 {[%emt 0:02:36]} 14. Qxe3 {[%emt 0:00:01]} Bxg4 {[%emt 0:05:11]} 15. Nxd5 {[%emt 0:01:32]} Be6 {[%emt 0:10:03]} 16. Nc3 {[%emt 0:11:32]} fxe5 {[%emt 0:01:01]} 17. Ng5 {[%emt 0:00:37]} Bxg5 {[%emt 0:01:24]} 18. fxg5 {[%emt 0:00:21]} Qxd4 {[%emt 0:00:45]} 19. Qxd4 {[%emt 0:06:54]} exd4 {[%emt 0:00:20]} 20. Ne4 {[%emt 0:00:27]} Bxa2 {[%emt 0:04:14]} 21. Nc5 {[%emt 0:08:02]} Ne5 {[%emt 0:01:01]} 22. h4 {[%emt 0:05:39]} Bd5 {[%emt 0:00:20]} 23. Rh3 {[%emt 0:00:38]} Rac8 {[%emt 0:00:12]} 24. Kd2 {[%emt 0:00:47]} b6 {[%emt 0:00:52]} 25. Nd3 {[%emt 0:00:36]} Nxd3 {[%emt 0:00:29]} 26. Rxc8 {[%emt 0:00:52]} Rxc8 {[%emt 0:00:01]} 27. Bxd3 {[%emt 0:00:40]} e5 {[%emt 0:00:18]} 28. h5 {[%emt 0:00:23]} e4 {[%emt 0:00:54]} 29. Ba6 {[%emt 0:02:28]} Rf8 {[%emt 0:00:32]} 30. hxg6 {[%emt 0:00:52]} hxg6 {[%emt 0:00:07]} 31. Ke1 {[%emt 0:01:47]} Rf4 {[%emt 0:02:06]} 32. Rg3 {[%emt 0:00:18]} Kg7 {[%emt 0:00:46]} 33. Be2 {[%emt 0:09:04]} a5 {[%emt 0:01:09]} 34. Bb5 {[%emt 0:01:16]} Rh4 {[%emt 0:00:14]} 35. Rg2 {[%emt 0:07:45]} Rh1+ {[%emt 0:00:19]} 36. Ke2 {[%emt 0:00:07]} Rb1 {[%emt 0:00:21]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.5"]
[White "Yanayt, Eugene"]
[Black "Mundayat, Abinav"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2079"]
[BlackElo "1941"]
[Annotator "ChessBase"]
[PlyCount "61"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:02:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:16]} e6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:16]} d5 {[%emt 0:00:00]} 4. Nf3 {[%emt 0:00:16]} Be7 {[%emt 0:00:06]} 5. Bg2 {[%emt 0:00:17]} O-O {[%emt 0:00:13]} 6. O-O {[%emt 0:00:10]} dxc4 {[%emt 0:00:11]} 7. Qc2 {[%emt 0:00:20]} a6 {[%emt 0:00:24]} 8. a4 {[%emt 0:00:14]} Bd7 {[%emt 0:00:21]} 9. Ne5 {[%emt 0:01:03]} Bc6 {[%emt 0:00:23]} 10. Nxc6 {[%emt 0:00:53]} Nxc6 {[%emt 0:00:06]} 11. e3 {[%emt 0:04:42]} Nd5 {[%emt 0:00:54]} 12. a5 {[%emt 0:07:44]} b5 {[%emt 0:26:04]} 13. axb6 {[%emt 0:01:15]} cxb6 {[%emt 0:00:18]} 14. Qxc4 {[%emt 0:03:52]} Na5 {[%emt 0:00:28]} 15. Qa4 {[%emt 0:11:47]} Qe8 {[%emt 0:09:49]} 16. Qd1 {[%emt 0:12:34]} Qb5 {[%emt 0:09:07]} 17. e4 {[%emt 0:05:55]} Nf6 {[%emt 0:16:04]} 18. Nc3 {[%emt 0:02:48]} Qb3 {[%emt 0:00:14]} 19. Ra4 {[%emt 0:22:57]} Rfd8 {[%emt 0:08:10]} 20. d5 {[%emt 0:13:30]} Qxd1 {[%emt 0:19:03]} 21. Rxd1 {[%emt 0:00:12]} Nb3 {[%emt 0:00:08]} 22. Bf4 {[%emt 0:02:53]} b5 {[%emt 0:04:32]} 23. Ra2 {[%emt 0:00:03]} b4 {[%emt 0:05:22]} 24. Na4 {[%emt 0:02:25]} exd5 {[%emt 0:03:46]} 25. e5 {[%emt 0:06:21]} Nh5 {[%emt 0:03:39]} 26. Be3 {[%emt 0:11:57]} Rac8 {[%emt 0:11:17]} 27. Bxd5 {[%emt 0:02:46]} Bc5 {[%emt 0:01:53]} 28. Nxc5 {[%emt 0:05:07]} Nxc5 {[%emt 0:00:30]} 29. Bxc5 {[%emt 0:00:48]} Kh8 {[%emt 0:01:12]} 30. Be7 {[%emt 0:02:03]} Rd7 {[%emt 0:00:30]} 31. Bd6 {[%emt 0:00:09]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.6"]
[White "Singh, Hersh"]
[Black "Weeter, Cody Heath"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2080"]
[Annotator "ChessBase"]
[PlyCount "145"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 3. f3 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 4. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:12]} 5. Nc3 {[%emt 0:00:00]} O-O {[%emt 0:00:11]} 6. Nge2 {[%emt 0:00:00]} c5 {[%emt 0:00:47]} 7. d5 {[%emt 0:00:00]} Nbd7 {[%emt 0:04:39]} 8. Ng3 {[%emt 0:00:02]} h5 {[%emt 0:01:19]} 9. Bg5 {[%emt 0:03:27]} Qb6 {[%emt 0:09:00]} 10. Qd2 {[%emt 0:01:54]} Re8 {[%emt 0:02:05]} 11. Be2 {[%emt 0:03:10]} Nh7 {[%emt 0:02:50]} 12. Be3 {[%emt 0:06:50]} h4 {[%emt 0:04:34]} 13. Nf1 {[%emt 0:01:08]} a6 {[%emt 0:04:33]} 14. Bf2 {[%emt 0:05:42]} Qb4 {[%emt 0:03:42]} 15. Bxh4 {[%emt 0:13:55]} Nb6 {[%emt 0:05:30]} 16. a3 {[%emt 0:05:49]} Qb3 {[%emt 0:01:03]} 17. Ne3 {[%emt 0:01:23]} Na4 {[%emt 0:08:26]} 18. Nxa4 {[%emt 0:02:34]} Qxa4 {[%emt 0:01:18]} 19. Bd1 {[%emt 0:05:06]} Qd7 {[%emt 0:01:27]} 20. a4 {[%emt 0:05:14]} Rb8 {[%emt 0:01:11]} 21. Be2 {[%emt 0:00:21]} Qc7 {[%emt 0:10:59]} 22. Nd1 {[%emt 0:16:36]} Bd7 {[%emt 0:13:36]} 23. Nc3 {[%emt 0:01:13]} Qa5 {[%emt 0:02:44]} 24. O-O {[%emt 0:00:54]} Qb4 {[%emt 0:06:04]} 25. Qc2 {[%emt 0:02:38]} e6 {[%emt 0:02:55]} 26. Bg3 {[%emt 0:09:41]} exd5 {[%emt 0:02:03]} 27. Bxd6 {[%emt 0:11:20]} Rbc8 {[%emt 0:03:10]} 28. cxd5 {[%emt 0:02:06]} b5 {[%emt 0:01:14]} 29. axb5 {[%emt 0:00:57]} Bxb5 {[%emt 0:02:18]} 30. Bxb5 {[%emt 0:03:51]} axb5 {[%emt 0:00:23]} 31. Bg3 {[%emt 0:00:49]} Qc4 {[%emt 0:00:56]} 32. Qe2 {[%emt 0:01:44]} Bd4+ {[%emt 0:01:59]} 33. Bf2 {[%emt 0:00:55]} Qxe2 {[%emt 0:00:12]} 34. Nxe2 {[%emt 0:00:03]} Bxb2 {[%emt 0:00:15]} 35. Rab1 {[%emt 0:00:08]} Ba3 {[%emt 0:02:33]} 36. Rxb5 {[%emt 0:00:07]} Nf6 {[%emt 0:01:49]} 37. Nc3 {[%emt 0:01:27]} Nd7 {[%emt 0:01:08]} 38. Na4 {[%emt 0:03:34]} c4 {[%emt 0:01:22]} 39. Ra1 {[%emt 0:01:26]} Bd6 {[%emt 0:01:38]} 40. Bd4 {[%emt 0:01:34]} Ra8 {[%emt 0:05:12]} 41. Rbb1 {[%emt 0:01:11]} f5 {[%emt 0:01:45]} 42. Nc3 {[%emt 0:00:49]} Rxa1 {[%emt 0:01:58]} 43. Rxa1 {[%emt 0:00:05]} Nc5 {[%emt 0:00:11]} 44. Ra7 {[%emt 0:05:44]} Nb3 {[%emt 0:03:37]} 45. Rg7+ {[%emt 0:04:20]} Kf8 {[%emt 0:00:07]} 46. Rxg6 {[%emt 0:03:26]} Bb4 {[%emt 0:01:29]} 47. Rb6 {[%emt 0:01:56]} Ba5 {[%emt 0:04:43]} 48. Ra6 {[%emt 0:02:02]} Bb4 {[%emt 0:00:47]} 49. Ra4 {[%emt 0:01:14]} Rb8 {[%emt 0:03:32]} 50. Be5 {[%emt 0:01:31]} Bc5+ {[%emt 0:00:42]} 51. Kh1 {[%emt 0:00:58]} Re8 {[%emt 0:01:25]} 52. f4 {[%emt 0:00:36]} fxe4 {[%emt 0:04:45]} 53. Rxc4 {[%emt 0:00:42]} e3 {[%emt 0:01:05]} 54. g4 {[%emt 0:00:58]} Ra8 {[%emt 0:00:44]} 55. Rxc5 {[%emt 0:01:21]} Nxc5 {[%emt 0:03:03]} 56. Bd6+ {[%emt 0:00:04]} Kf7 {[%emt 0:00:34]} 57. Bxc5 {[%emt 0:00:06]} Rc8 {[%emt 0:00:41]} 58. Bd4 {[%emt 0:00:27]} Rc4 {[%emt 0:00:18]} 59. Be5 {[%emt 0:00:11]} Rb4 {[%emt 0:01:01]} 60. Kg2 {[%emt 0:00:14]} Rb2+ {[%emt 0:00:31]} 61. Kf3 {[%emt 0:00:02]} Rxh2 {[%emt 0:00:15]} 62. Kxe3 {[%emt 0:00:04]} Rh3+ {[%emt 0:00:19]} 63. Kd4 {[%emt 0:00:06]} Rg3 {[%emt 0:01:06]} 64. g5 {[%emt 0:00:02]} Rg2 {[%emt 0:00:16]} 65. Ne4 {[%emt 0:00:06]} Ra2 {[%emt 0:00:16]} 66. f5 {[%emt 0:00:29]} Ra4+ {[%emt 0:00:04]} 67. Ke3 {[%emt 0:00:14]} Ra3+ {[%emt 0:00:22]} 68. Kf4 {[%emt 0:00:11]} Ra4 {[%emt 0:00:33]} 69. g6+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:26]} 70. d6 {[%emt 0:00:11]} Kf8 {[%emt 0:01:13]} 71. g7+ {[%emt 0:00:21]} Kf7 {[%emt 0:00:23]} 72. d7 {[%emt 0:00:06]} Rc4 {[%emt 0:00:22]} 73. g8=Q+ {[%emt 0:00:13]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.7"]
[White "Zhurbinsky, David"]
[Black "Zaloznyy, Mike"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1823"]
[BlackElo "1996"]
[Annotator "ChessBase"]
[PlyCount "167"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} d6 {[%emt 0:01:43]} 2. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:03]} 3. Nc3 {[%emt 0:00:00]} e5 {[%emt 0:00:08]} 4. Nf3 {[%emt 0:00:38]} Nbd7 {[%emt 0:00:07]} 5. Bc4 {[%emt 0:01:10]} Be7 {[%emt 0:00:20]} 6. Bxf7+ {[%emt 0:05:33]} Kxf7 {[%emt 0:00:08]} 7. Ng5+ {[%emt 0:00:03]} Kg8 {[%emt 0:00:14]} 8. Ne6 {[%emt 0:01:23]} Qe8 {[%emt 0:00:11]} 9. Nxc7 {[%emt 0:00:48]} Qg6 {[%emt 0:00:10]} 10. Nxa8 {[%emt 0:01:38]} Qxg2 {[%emt 0:00:07]} 11. Rf1 {[%emt 0:00:18]} exd4 {[%emt 0:00:06]} 12. Qxd4 {[%emt 0:06:21]} Ne5 {[%emt 0:00:12]} 13. f3 {[%emt 0:07:02]} Bh3 {[%emt 0:23:19]} 14. Qf2 {[%emt 0:04:40]} Qxf1+ {[%emt 0:04:38]} 15. Qxf1 {[%emt 0:00:05]} Bxf1 {[%emt 0:00:13]} 16. Kxf1 {[%emt 0:00:15]} Nxf3 {[%emt 0:00:37]} 17. Bf4 {[%emt 0:05:31]} Nh5 {[%emt 0:28:34]} 18. Bg3 {[%emt 0:16:03]} Nxg3+ {[%emt 0:01:58]} 19. hxg3 {[%emt 0:00:29]} Nd4 {[%emt 0:00:04]} 20. Nd5 {[%emt 0:03:19]} Kf7 {[%emt 0:07:17]} 21. Nac7 {[%emt 0:01:31]} Nxc2 {[%emt 0:08:08]} 22. Rc1 {[%emt 0:00:47]} Nd4 {[%emt 0:00:52]} 23. Nxe7 {[%emt 0:01:41]} Kxe7 {[%emt 0:00:24]} 24. Nd5+ {[%emt 0:00:28]} Ke6 {[%emt 0:01:01]} 25. Rc7 {[%emt 0:00:56]} Rf8+ {[%emt 0:04:49]} 26. Nf4+ {[%emt 0:06:04]} Kf6 {[%emt 0:00:58]} 27. Rxb7 {[%emt 0:09:02]} g5 {[%emt 0:01:00]} 28. Nd3 {[%emt 0:06:43]} Kg6+ {[%emt 0:05:25]} 29. Kg2 {[%emt 0:00:43]} Rf3 {[%emt 0:03:43]} 30. Nf2 {[%emt 0:00:55]} Rf7 {[%emt 0:01:34]} 31. Rb8 {[%emt 0:05:59]} Rc7 {[%emt 0:08:11]} 32. Rd8 {[%emt 0:04:52]} Rc6 {[%emt 0:00:54]} 33. Rg8+ {[%emt 0:01:37]} Kf6 {[%emt 0:04:24]} 34. Ng4+ {[%emt 0:00:49]} Kf7 {[%emt 0:03:26]} 35. Rxg5 {[%emt 0:01:36]} Rc2+ {[%emt 0:00:28]} 36. Kh3 {[%emt 0:00:27]} Rxb2 {[%emt 0:03:17]} 37. Rd5 {[%emt 0:01:48]} Ne6 {[%emt 0:02:59]} 38. Nh6+ {[%emt 0:04:12]} Kf6 {[%emt 0:02:14]} 39. Ng4+ {[%emt 0:05:47]} Kf7 {[%emt 0:04:18]} 40. Ra5 {[%emt 0:01:47]} Kg6 {[%emt 0:01:16]} 41. Kh4 {[%emt 0:04:04]} Rb1 {[%emt 0:04:40]} 42. Nf2 {[%emt 0:03:19]} Rb2 {[%emt 0:02:49]} 43. Nh3 {[%emt 0:02:48]} Re2 {[%emt 0:01:13]} 44. Ra4 {[%emt 0:01:19]} Rh2 {[%emt 0:01:16]} 45. Ra6 {[%emt 0:02:22]} Re2 {[%emt 0:00:45]} 46. Rxd6 {[%emt 0:04:33]} Rxe4+ {[%emt 0:00:01]} 47. g4 {[%emt 0:00:29]} Kf6 {[%emt 0:01:25]} 48. Ra6 {[%emt 0:01:23]} h6 {[%emt 0:01:29]} 49. Rxa7 {[%emt 0:01:07]} Nd4 {[%emt 0:00:24]} 50. Ra6+ {[%emt 0:02:38]} Kg7 {[%emt 0:00:06]} 51. Kg3 {[%emt 0:00:46]} Re3+ {[%emt 0:00:19]} 52. Kg2 {[%emt 0:00:07]} Ne6 {[%emt 0:01:16]} 53. a4 {[%emt 0:01:06]} Re2+ {[%emt 0:00:36]} 54. Kg3 {[%emt 0:01:03]} Re3+ {[%emt 0:00:07]} 55. Kf2 {[%emt 0:00:49]} Re5 {[%emt 0:00:57]} 56. Kf3 {[%emt 0:00:45]} Nd4+ {[%emt 0:00:27]} 57. Kf4 {[%emt 0:00:02]} Re2 {[%emt 0:00:32]} 58. Rd6 {[%emt 0:00:54]} Nb3 {[%emt 0:00:34]} 59. Kf5 {[%emt 0:00:44]} Nc5 {[%emt 0:00:30]} 60. Nf4 {[%emt 0:00:58]} Rf2 {[%emt 0:00:26]} 61. a5 {[%emt 0:00:23]} Ra2 {[%emt 0:00:27]} 62. Rd5 {[%emt 0:00:50]} Nb3 {[%emt 0:00:25]} 63. Nh5+ {[%emt 0:01:09]} Kf7 {[%emt 0:00:43]} 64. Rd7+ {[%emt 0:00:20]} Kf8 {[%emt 0:00:01]} 65. Kg6 {[%emt 0:01:11]} Nc5 {[%emt 0:01:32]} 66. Ra7 {[%emt 0:00:57]} Ke8 {[%emt 0:00:00]} 67. Kxh6 {[%emt 0:00:19]} Nd7 {[%emt 0:00:25]} 68. g5 {[%emt 0:00:36]} Rh2 {[%emt 0:00:05]} 69. a6 {[%emt 0:01:13]} Ne5 {[%emt 0:00:18]} 70. g6 {[%emt 0:00:52]} Nxg6 {[%emt 0:00:43]} 71. Kxg6 {[%emt 0:00:05]} Ra2 {[%emt 0:00:01]} 72. Ng7+ {[%emt 0:01:31]} Kd8 {[%emt 0:00:03]} 73. Ne6+ {[%emt 0:00:11]} Kc8 {[%emt 0:00:23]} 74. Kf7 {[%emt 0:00:40]} Rf2+ {[%emt 0:01:36]} 75. Ke7 {[%emt 0:00:32]} Rb2 {[%emt 0:00:48]} 76. Ra8+ {[%emt 0:00:19]} Rb8 {[%emt 0:00:01]} 77. Rxb8+ {[%emt 0:00:11]} Kxb8 {[%emt 0:00:04]} 78. Nc5 {[%emt 0:00:14]} Ka7 {[%emt 0:01:03]} 79. Kd7 {[%emt 0:00:22]} Ka8 {[%emt 0:00:06]} 80. Kc6 {[%emt 0:00:08]} Ka7 {[%emt 0:00:15]} 81. Kc7 {[%emt 0:00:07]} Ka8 {[%emt 0:00:10]} 82. Kb6 {[%emt 0:00:03]} Kb8 {[%emt 0:00:13]} 83. Ne6 {[%emt 0:00:05]} Ka8 {[%emt 0:00:28]} 84. Nc7+ {[%emt 0:00:03]} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.8"]
[White "Lu, Jason"]
[Black "Kanli, Alperen"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2068"]
[BlackElo "1911"]
[Annotator "ChessBase"]
[PlyCount "112"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:01:02]} c6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:08]} d5 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:06]} Bg4 {[%emt 0:00:13]} 4. h3 {[%emt 0:00:08]} Bh5 {[%emt 0:00:05]} 5. exd5 {[%emt 0:01:44]} cxd5 {[%emt 0:00:05]} 6. Bb5+ {[%emt 0:00:48]} Nc6 {[%emt 0:00:07]} 7. g4 {[%emt 0:00:17]} Bg6 {[%emt 0:00:06]} 8. Ne5 {[%emt 0:00:11]} Rc8 {[%emt 0:00:01]} 9. d4 {[%emt 0:00:47]} e6 {[%emt 0:00:11]} 10. Bf4 {[%emt 0:18:49]} f6 {[%emt 0:02:29]} 11. Nxg6 {[%emt 0:04:09]} hxg6 {[%emt 0:00:53]} 12. Qd3 {[%emt 0:02:37]} Kf7 {[%emt 0:00:03]} 13. Bxc6 {[%emt 0:04:54]} bxc6 {[%emt 0:04:11]} 14. Ne2 {[%emt 0:02:04]} Bd6 {[%emt 0:05:41]} 15. Qg3 {[%emt 0:07:17]} Bxf4 {[%emt 0:12:26]} 16. Nxf4 {[%emt 0:00:26]} Ne7 {[%emt 0:00:08]} 17. Nd3 {[%emt 0:13:00]} Qc7 {[%emt 0:05:14]} 18. Qxc7 {[%emt 0:07:03]} Rxc7 {[%emt 0:00:01]} 19. f4 {[%emt 0:00:21]} Nc8 {[%emt 0:01:45]} 20. O-O-O {[%emt 0:01:54]} Nd6 {[%emt 0:03:31]} 21. b3 {[%emt 0:15:11]} Ne4 {[%emt 0:01:26]} 22. Kb2 {[%emt 0:00:16]} g5 {[%emt 0:02:43]} 23. Rde1 {[%emt 0:03:22]} c5 {[%emt 0:06:23]} 24. dxc5 {[%emt 0:03:12]} gxf4 {[%emt 0:00:20]} 25. Nxf4 {[%emt 0:03:12]} g5 {[%emt 0:06:23]} 26. Nd3 {[%emt 0:04:50]} Nxc5 {[%emt 0:00:03]} 27. Re3 {[%emt 0:00:26]} Ne4 {[%emt 0:04:14]} 28. c4 {[%emt 0:08:01]} dxc4 {[%emt 0:01:48]} 29. Ne5+ {[%emt 0:01:00]} fxe5 {[%emt 0:00:05]} 30. Rxe4 {[%emt 0:00:04]} cxb3 {[%emt 0:03:51]} 31. Rxe5 {[%emt 0:00:07]} Kf6 {[%emt 0:00:45]} 32. Rhe1 {[%emt 0:01:54]} Rc6 {[%emt 0:03:51]} 33. axb3 {[%emt 0:01:13]} Rxh3 {[%emt 0:00:04]} 34. Ra5 {[%emt 0:02:40]} Rb6 {[%emt 0:01:57]} 35. Rf1+ {[%emt 0:03:23]} Kg6 {[%emt 0:01:09]} 36. Rxa7 {[%emt 0:00:13]} Rhxb3+ {[%emt 0:00:13]} 37. Kc2 {[%emt 0:01:06]} R3b4 {[%emt 0:01:01]} 38. Raf7 {[%emt 0:01:19]} e5 {[%emt 0:00:31]} 39. Re7 {[%emt 0:02:39]} Rxg4 {[%emt 0:02:38]} 40. Rxe5 {[%emt 0:00:09]} Rg3 {[%emt 0:00:11]} 41. Rf8 {[%emt 0:02:21]} Ra6 {[%emt 0:01:05]} 42. Kb2 {[%emt 0:02:18]} Rf6 {[%emt 0:02:32]} 43. Rd8 {[%emt 0:03:22]} Rf2+ {[%emt 0:03:46]} 44. Kc1 {[%emt 0:00:12]} Rg1+ {[%emt 0:00:05]} 45. Rd1 {[%emt 0:00:02]} Rxd1+ {[%emt 0:00:07]} 46. Kxd1 {[%emt 0:00:02]} Kh5 {[%emt 0:00:16]} 47. Ke1 {[%emt 0:01:05]} Rf8 {[%emt 0:00:09]} 48. Re7 {[%emt 0:01:50]} Kh4 {[%emt 0:00:10]} 49. Rh7+ {[%emt 0:00:17]} Kg3 {[%emt 0:00:02]} 50. Rg7 {[%emt 0:00:17]} g4 {[%emt 0:00:05]} 51. Rh7 {[%emt 0:00:44]} Kg2 {[%emt 0:00:06]} 52. Rg7 {[%emt 0:00:02]} g3 {[%emt 0:00:07]} 53. Re7 {[%emt 0:00:21]} Kg1 {[%emt 0:01:11]} 54. Re6 {[%emt 0:01:01]} g2 {[%emt 0:01:28]} 55. Re7 {[%emt 0:00:08]} Rh8 {[%emt 0:00:19]} 56. Rg7 {[%emt 0:00:39]} Kh2 {[%emt 0:01:06]} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.9"]
[White "NGUYEN, James L"]
[Black "Moor, Nathaniel Philip"]
[Result "0-1"]
[ECO "B52"]
[BlackElo "1712"]
[Annotator "NA"]
[PlyCount "64"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. Bb5+ {[%emt 0:00:00]} Bd7 {[%emt 0:00:00]} 4. Bxd7+ {[%emt 0:00:23]} Qxd7 {[%emt 0:00:00]} 5. c4 {[%emt 0:00:09]} e5 {[%emt 0:00:59]} 6. Nc3 {[%emt 0:01:03]} Ne7 {[%emt 0:00:15]} 7. O-O {[%emt 0:02:10]} g6 {[%emt 0:00:39]} 8. d3 {[%emt 0:02:13]} Bg7 {[%emt 0:00:07]} 9. Be3 {[%emt 0:01:31]} Nbc6 {[%emt 0:00:05]} 10. Qd2 {[%emt 0:03:19]} O-O {[%emt 0:00:04]} 11. Bh6 {[%emt 0:02:45]} f5 {[%emt 0:04:09]} 12. Bxg7 {[%emt 0:05:10]} Kxg7 {[%emt 0:00:04]} 13. Nd5 {[%emt 0:03:58]} fxe4 {[%emt 0:14:56]} 14. Ng5 {[%emt 1:44:19]} exd3 {[%emt 0:06:25]} 15. Nc7 {[%emt 0:00:00]} Qf5 {[%emt 0:09:47]} 16. Nge6+ {[%emt 0:00:00]} Kh8 {[%emt 0:00:01]} 17. Qh6 {[%emt 0:00:00]} Rf7 {[%emt 0:00:30]} 18. Nxa8 {[%emt 0:00:00]} Qxe6 {[%emt 0:00:01]} 19. Qh3 {[%emt 0:00:00]} Qxh3 {[%emt 0:04:53]} 20. gxh3 {[%emt 0:00:00]} Nf5 {[%emt 0:00:00]} 21. Rad1 {[%emt 0:00:00]} e4 {[%emt 0:06:41]} 22. f3 {[%emt 0:00:00]} Ne3 {[%emt 0:15:40]} 23. fxe4 {[%emt 0:00:00]} Nxf1 {[%emt 0:00:29]} 24. Rxf1 {[%emt 0:00:00]} d2 {[%emt 0:00:19]} 25. Rd1 {[%emt 0:00:00]} Nd4 {[%emt 0:00:07]} 26. Kg2 {[%emt 0:00:00]} Nc2 {[%emt 0:00:12]} 27. Rxd2 {[%emt 0:00:00]} Ne3+ {[%emt 0:00:07]} 28. Kg3 {[%emt 0:00:00]} Nf1+ {[%emt 0:00:07]} 29. Kg4 {[%emt 0:00:00]} Nxd2 {[%emt 0:00:08]} 30. h4 {[%emt 0:00:00]} h5+ {[%emt 0:00:36]} 31. Kg5 {[%emt 0:00:00]} Kg7 {[%emt 0:00:08]} 32. h3 {[%emt 0:00:00]} Nxe4# {[%emt 0:00:07]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "4.9"]
[White "Nguyen, James Le"]
[Black "Moor, Nathaniel Philip"]
[Result "0-1"]
[ECO "B52"]
[BlackElo "1712"]
[Annotator "NA"]
[PlyCount "64"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "7200+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. Bb5+ {[%emt 0:00:00]} Bd7 {[%emt 0:00:00]} 4. Bxd7+ {[%emt 0:00:23]} Qxd7 {[%emt 0:00:00]} 5. c4 {[%emt 0:00:09]} e5 {[%emt 0:00:59]} 6. Nc3 {[%emt 0:01:03]} Ne7 {[%emt 0:00:15]} 7. O-O {[%emt 0:02:10]} g6 {[%emt 0:00:39]} 8. d3 {[%emt 0:02:13]} Bg7 {[%emt 0:00:07]} 9. Be3 {[%emt 0:01:31]} Nbc6 {[%emt 0:00:05]} 10. Qd2 {[%emt 0:03:19]} O-O {[%emt 0:00:04]} 11. Bh6 {[%emt 0:02:45]} f5 {[%emt 0:04:09]} 12. Bxg7 {[%emt 0:05:10]} Kxg7 {[%emt 0:00:04]} 13. Nd5 {[%emt 0:03:58]} fxe4 {[%emt 0:14:56]} 14. Ng5 {[%emt 1:44:19]} exd3 {[%emt 0:06:25]} 15. Nc7 {[%emt 0:00:00]} Qf5 {[%emt 0:09:47]} 16. Nge6+ {[%emt 0:00:00]} Kh8 {[%emt 0:00:01]} 17. Qh6 {[%emt 0:00:00]} Rf7 {[%emt 0:00:30]} 18. Nxa8 {[%emt 0:00:00]} Qxe6 {[%emt 0:00:01]} 19. Qh3 {[%emt 0:00:00]} Qxh3 {[%emt 0:04:53]} 20. gxh3 {[%emt 0:00:00]} Nf5 {[%emt 0:00:00]} 21. Rad1 {[%emt 0:00:00]} e4 {[%emt 0:06:41]} 22. f3 {[%emt 0:00:00]} Ne3 {[%emt 0:15:40]} 23. fxe4 {[%emt 0:00:00]} Nxf1 {[%emt 0:00:29]} 24. Rxf1 {[%emt 0:00:00]} d2 {[%emt 0:00:19]} 25. Rd1 {[%emt 0:00:00]} Nd4 {[%emt 0:00:07]} 26. Kg2 {[%emt 0:00:00]} Nc2 {[%emt 0:00:12]} 27. Rxd2 {[%emt 0:00:00]} Ne3+ {[%emt 0:00:07]} 28. Kg3 {[%emt 0:00:00]} Nf1+ {[%emt 0:00:07]} 29. Kg4 {[%emt 0:00:00]} Nxd2 {[%emt 0:00:08]} 30. h4 {[%emt 0:00:00]} h5+ {[%emt 0:00:36]} 31. Kg5 {[%emt 0:00:00]} Kg7 {[%emt 0:00:08]} 32. h3 {[%emt 0:00:00]} Nxe4# {[%emt 0:00:07]} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.1"]
[White "Paul, Justin"]
[Black "Miller, Daniel"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2249"]
[BlackElo "2182"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,82,16,10,18,39,39,40,14,15,14,17,22,24,4,35,8,51,34,111,107,96,94,183,178,229,188,179,193,211,211,248,181,244,137,208,129,118,117,109,106,255,255,255,255,255,255,255,255,255,225,255,255,255,255,255,255,253,16,8,13,488,477,498,477,431,56,5677,6203,29983,29984,29977]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Nd7 7. Be3 Be7 8. Qd2 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Ne5 9. Nxe5 dxe5 10. Bd3 {White is slightly better.} Be6 11. Qe2 Qd5 12. f3 O-O {[#]} 13. O-O $146 ({Predecessor:} 13. Bf2 Rad8 14. a4 b6 15. O-O Bc5 16. Rad1 Bxf2+ 17. Qxf2 g6 18. Rfe1 f6 19. h4 Kg7 20. h5 gxh5 21. f4 exf4 {½-½ (21) Nekhaev,A (2487)-Volodarsky,Y (2356) ICCF email 2017}) 13... c6 14. b4 a5 (14... Qd7 {is interesting.} 15. Rad1 Qc8 16. a3 Re8 17. Bf2 Bf6) 15. Rfd1 $1 {And now Bxh7+! would win.} axb4 {[#]} (15... e4 $1 $14 16. Bxe4 {[%mdl 64] Discovered Attack} Qh5) 16. Bxh7+ $1 $16 {[%mdl 576] Discovered Attack} Kxh7 17. Rxd5 Bxd5 (17... cxd5 $16 18. cxb4 Bxb4) 18. cxb4 $18 Bxb4 (18... b5 {was necessary.} 19. a4 Bxb4) 19. c4 Be6 20. Qb2 {[%mdl 64] Double Attack} Ba3 21. Qxe5 Rfe8 22. Qc3 Kg8 {[#]} (22... Be7 {was worth a try.} 23. Bd4 Bf8) 23. Bd4 ({White should play} 23. c5 $1 $18) 23... f6 (23... Bf8 $16 {is a better defense.} 24. a4 Red8) 24. Qc2 b5 25. cxb5 cxb5 26. Re1 {aiming for Qc6.} Bf7 (26... Bc4 $16 27. Rxe8+ Rxe8) 27. Rxe8+ Rxe8 28. Qd3 b4 29. Qc2 Re1+ 30. Kf2 Rc1 31. Qd2 Bg6 {White must now prevent ...Rc2.} 32. Kg3 Rc2 33. Qf4 Rxa2 34. Qg4 Kh7 {intending ...b3.} 35. h4 $2 (35. Qh3+ $18 Kg8 36. Qe6+ Bf7 37. Qc8+ Kh7 38. Qb7) 35... b3 $11 36. h5 Bd3 {[%mdl 8192] [#]} (36... Bc2 $1 $11 {and Black stays safe.}) 37. Bxf6 $1 $18 {[%csl Gf6][%cal Rg4g7][%mdl 512]} Bd6+ (37... Bf8 38. Qc8) 38. f4 {[%csl Gf6][%cal Rg4g7]} Ra7 39. Qd1 $2 Be4 $2 {[%mdl 8192] [#]} (39... Bxf4+ $14 40. Kxf4 Bc2) 40. Qd4 $1 {[%mdl 64] Double Attack} gxf6 (40... Rf7 41. Qxe4+) 41. Qxa7+ Kg8 {Weighted Error Value: White=0.38/Black=0.61} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.2"]
[White "Chiu, Isaac"]
[Black "Singh, Hersh"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2195"]
[BlackElo "2080"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,118,18,23,29,26,14,12,8,14,7,0,10,7,-1,19,18,21,22,25,13,19,14,26,30,33,29,29,38,33,36,31,25,34,18,38,0,0,0,0,0,0,0,19,0,0,0,0,-163,-152,-129,-134,-417,-410,-421,-421,-420,-421,-421,-421,-417,-414,-413,-399,-432,-432,-423,-392,-528,-527,-546,-540,-547,-534,-535,-527,-488,-439,-427,-352,-541,-491,-837,-838,-819,-787,-790,-777,-687,-641,-1305,-1312,-1312,-1015,-1402,-922,-758,-742,-29973,-29974,-29971,-29972,-29971,-12848,-29975,-29977,-29977,-29975,-29975,0,-29968,-11899]} 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 a6 5. e3 d6 6. Nf3 {A25: English Opening vs King's Indian with ...Nc6 but without early d3.} Ba7 7. a3 {[#]} Nge7 $146 ({Predecessor:} 7... Bg4 8. h3 Bh5 9. O-O Nge7 10. b4 O-O 11. Bb2 f5 12. d3 f4 13. exf4 Bxf3 14. Bxf3 exf4 {0-1 (62) Aabling Thomsen,J (2358)-Bjerre,J (2470) Svendborg 2019}) 8. b4 {The position is equal.} Be6 9. d3 Qd7 10. Bb2 Bh3 11. O-O Bxg2 12. Kxg2 O-O 13. d4 exd4 14. exd4 Nf5 {[%cal Rc6d4]} 15. d5 Ncd4 16. Ne4 {[%cal Rf3d4]} Nxf3 17. Qxf3 Bd4 18. Bxd4 Nxd4 19. Qd3 Nf5 20. Rac1 a5 21. b5 b6 22. f4 Rae8 23. Rce1 Re7 24. Re2 Rfe8 25. Rfe1 Nh6 26. h3 Qf5 27. Qf3 {Nxd6! is the strong threat.} Qg6 28. g4 $2 {[#]} (28. Kf2 $11 {and White has nothing to worry.}) 28... Nf5 $1 $19 {[%cal Rf5h4] Threatens to win with ...Nh4+.} 29. Qd3 h5 30. Kh1 $2 {[%mdl 8192]} (30. Kf3 $17 hxg4+ 31. hxg4) 30... hxg4 31. hxg4 {[#]} Rxe4 $1 {[%mdl 576] Remove Defender} 32. Rxe4 Rxe4 33. Rxe4 {[#] aiming for Re8+.} Ng3+ $1 {[%mdl 576] Discovered Attack} 34. Qxg3 Qxe4+ {[%mdl 4096] Endgame KQ-KQ} 35. Kg1 Qd4+ 36. Kh2 Qxc4 37. Qe3 Kf8 38. g5 Qxd5 39. Qc3 Qc5 40. Qh3 Qf2+ 41. Kh1 Qe1+ 42. Kh2 Qe2+ 43. Kg1 {intending Qc8+.} Qe6 44. Qh8+ Ke7 45. Kf2 (45. Qh4 $142 Qe3+ 46. Kh1) 45... Qa2+ 46. Kg1 Qb1+ 47. Kg2 Qb2+ 48. Kh1 Qxb5 49. Qxg7 Qf1+ {[%mdl 64] Double Attack} 50. Kh2 Qxf4+ 51. Kh1 Qe4+ 52. Kg1 Qg6 53. Qb2 Qxg5+ 54. Kh1 Qd5+ 55. Kg1 Kd7 (55... f5 $142 56. Qg7+ Qf7 57. Qg3 c5 58. Kf2 Qe6 59. Qg7+ Kd8 60. Qb7 d5 61. Qb8+ Ke7 62. Qg3 d4 63. Qc7+ Kf6 64. a4 c4 65. Qd8+ Ke5 66. Qh8+ Qf6 67. Qe8+ Kf4 68. Qh5 d3 69. Qh2+ Ke4 70. Qg2+ Kd4 71. Kf1 c3 72. Qf2+ Kc4 73. Qa2+ Kc5 74. Qb1 Kd4 75. Qe1 d2 76. Qf2+ Kd3 77. Qg3+ Kc2 78. Qf2 Qg5 79. Qe2 Qf4+ 80. Kg2 Qe4+ 81. Qf3 d1=Q 82. Qxe4+ fxe4 83. Kh3 e3 84. Kh4 e2 85. Kg4 e1=Q+ 86. Kf4 Qe7 87. Kg3 Qg5+ 88. Kh3 Qdh5#) 56. a4 Kc8 57. Qf2 Qc5 58. Kh1 Qd5+ 59. Kg1 $1 Kb7 {Weighted Error Value: White=0.38/Black=0.06} (59... f5 $142 60. Qe2 Qd4+ 61. Kf1 Qf4+ 62. Kg2 Qg4+ 63. Kf2 Qxe2+ 64. Kxe2 c6 65. Kf2 b5 66. axb5 cxb5 67. Ke3 a4 68. Kd3 f4 69. Ke4 a3 70. Kxf4 a2 71. Ke4 a1=Q 72. Kd3 Qe1 73. Kd4 b4 74. Kd5 b3 75. Kxd6 b2 76. Kc6 b1=Q 77. Kc5 Qe5+ 78. Kc6 Qg6#) 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.3"]
[White "Moor, Nathaniel Philip"]
[Black "Yanayt, Eugene"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "1712"]
[BlackElo "2079"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,81,48,50,35,15,0,8,0,0,10,0,0,0,19,-12,-16,-46,-39,-43,-52,-41,-53,-45,-54,-62,-57,-45,388,407,395,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,269,239,241,260,432,279,270,246,236,242,334,233,392,389,808,808,806,806]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Bd7 10. O-O-O Rb8 11. h4 b5 {B78: Sicilian Dragon: Yugoslav Attack, 9 Bc4 Bd7 10 0-0-0 Rc8.} 12. Ndxb5 Ne5 13. Be2 Qa5 $1 {[%cal Rd7b5] The position is equal.} 14. Nd4 Rfc8 15. Nb3 Rxb3 16. cxb3 {And now Kb1 would win.} (16. axb3 $2 Nxe4 $1 {[%mdl 512]} 17. fxe4 Qa1+ 18. Nb1 Nc4 $1 $19 {[%mdl 512]}) 16... Qxa2 17. Qc2 (17. Bc4 $5 {[%cal Rc3a2]} Qa5 18. Kb1 $11) 17... Qa5 18. Kb1 Nc6 19. Bc4 Nb4 20. Qe2 d5 21. Bxd5 {[#] Hoping for Bc4.} (21. exd5 $2 Bf5+ 22. Kc1 Nh5 $19) 21... Rxc3 {[%csl Gb4][%cal Ra5a2]} 22. Bxf7+ $1 Kxf7 {[%csl Gb4][%cal Ra5a2]} 23. bxc3 {[#]} Bb5 $146 {[%mdl 8192]} ({Predecessor:} 23... Nfd5 24. Rxd5 Nxd5 25. Qc4 Qxc3 26. Qxc3 Nxc3+ 27. Kc2 a6 28. h5 Ne2 29. Rd1 Bb5 30. Rd5 e5 31. hxg6+ hxg6 32. Rc5 Kf6 {½-½ (32) Garcia Ramirez,C (2154)-Senzacqua,F (2140) ICCF email 2011}) 24. cxb4 $18 Qa6 {[#]} 25. Qc2 (25. Qf2 $1 $18) 25... Nd5 $1 $11 {[%csl Gg7][%cal Ra6a1]} 26. Bd4 Nxb4 27. Qb2 Bd3+ 28. Kc1 Bh6+ 29. Rd2 $1 Bc2 {aiming for ...Nd3+.} 30. Qa1 $1 {[%cal Ra1a6]} (30. f4 $2 Bxf4 31. Bc3 Nd3+ 32. Kxc2 Nxb2 $19) 30... Qd3 {[%mdl 64] Double Attack, Pin} 31. Bc3 {[%cal Rc3b4]} ({Avoid the trap} 31. Qc3 $2 Bxd2+ 32. Qxd2 Na2+ 33. Kb2 Qxd2 $19) 31... Bb1 {[%csl Gb1,Gb4][%cal Rd3c2]} 32. Kd1 Bc2+ {[%mdl 8192]} (32... Bxd2 $11 {and Black has nothing to worry.} 33. Bxd2 Qxb3+ 34. Ke2 Qd3+ 35. Kd1 Qc2+ 36. Ke2 (36. Ke1 $2 Nd3+ 37. Ke2 Nf4+ {[%mdl 64] Double Attack} 38. Ke3 Nxg2+ 39. Kf2 Qxd2+ $19) 36... Qd3+ 37. Kd1 Qb3+ 38. Ke2 Qd3+) 33. Ke1 $18 Bxd2+ 34. Bxd2 Qxb3 $2 (34... Bxb3 {keeps fighting.} 35. Qc3 (35. Bxb4 $2 {is a self mate.} Qe3+ 36. Kf1 Bc4#) 35... Qxc3 36. Bxc3 Nc6) 35. Kf2 Nd3+ 36. Kg3 Qb8+ 37. e5 Qb6 {White must now prevent ...Qf2+.} 38. Rf1 {Qc3 is the strong threat.} Bb3 $2 (38... Qe6 {was necessary.} 39. Bg5 Qxe5+ 40. Qxe5 Nxe5) 39. Qc3 Qb5 (39... Qe6 40. Qxd3 Bc4) 40. Rb1 Nc5 41. Be3 {Weighted Error Value: White=0.35/Black=0.50} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.4"]
[White "Lee, Justin"]
[Black "Altman, Joshua"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1953"]
[BlackElo "1926"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,64,14,27,17,39,21,29,15,24,0,6,0,0,0,0,0,17,19,21,0,0,0,0,0,0,0,0,0,0,0,0,-17,-6,-4,-6,-6,0,-10,0,0,0,0,0,-32,-23]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Nbd7 6. Nf3 Be7 7. Nxf6+ Nxf6 8. Bd3 b6 9. O-O Bb7 10. c3 O-O 11. Qe2 c5 12. dxc5 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} bxc5 13. Rad1 {[#] And now Bxh7+! would win.} Qc7 14. Ne5 {White has an edge.} Rad8 {[#]} 15. Nc4 $146 ({Predecessor:} 15. Rfe1 Bd5 16. c4 Ba8 17. Qe3 Rd4 18. Qh3 g6 19. Bh6 Nh5 20. Bxf8 Nf4 21. Qg3 Bxf8 {½-½ (50) Kaplan,S (2326)-Shachar,E (2394) Ramat Aviv 2004}) 15... Nd5 {[#]} 16. Qe4 $1 {[%csl Gd3][%cal Re4h7]} g6 17. Bxe7 Qxe7 18. Qe5 Qf6 19. Rfe1 Ba6 20. Bf1 {Threatens to win with Rxd5!} Bxc4 21. Qxf6 Nxf6 22. Bxc4 Rb8 23. b3 Rfd8 24. Kf1 Kf8 25. f3 Ke7 26. a4 Rd6 27. Rxd6 Kxd6 $11 {KRB-KRN} 28. Ke2 Kc7 29. Rd1 a5 30. Ke3 Nd5+ 31. Bxd5 exd5 32. Rb1 Kc6 {A rather calm draw.  Weighted Error Value: White=0.07/Black=0.03} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "5.5"]
[White "Kanli, Alperen"]
[Black "Zhurbinsky, David"]
[Result "0-1"]
[ECO "E48"]
[WhiteElo "1911"]
[BlackElo "1823"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,46,6,16,-9,-1,-9,35,39,54,35,62,48,42,51,52,57,44,44,51,33,35,0,0,2,40,40,39,-399,-401]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nge2 c5 7. cxd5 cxd4 8. exd4 Nxd5 9. O-O Nc6 10. a3 Ba5 11. Qc2 {E48: Nimzo-Indian: Rubinstein: 5 Bd3 d5 including 6 Ne2, but excluding 6 a3.} h6 12. Nxd5 Qxd5 13. Rd1 {[#] White is slightly better.} Qh5 $146 ({Predecessor:} 13... Rd8 14. Bh7+ Kh8 15. Be4 Qb5 16. Bf4 Bb6 17. a4 Qb4 18. Bxc6 bxc6 19. a5 Bxd4 {1-0 (29) Ozenir,E (2098)-Ozates,T (2291) Kocaeli 2017}) 14. Be4 Bc7 15. Ng3 Bxg3 16. hxg3 Bd7 17. Bf4 Rac8 {[#] ...Nxd4! is the strong threat.} 18. Qd3 Rfd8 19. b4 e5 20. Bxc6 (20. Bxe5 $5 Be6 21. Bf3 Nxe5 22. dxe5 Rxd3 23. Bxh5 Rxd1+ 24. Rxd1 $14) 20... Bxc6 21. Bxe5 Rd5 22. Rac1 Rcd8 {Strongly threatening ...Qxe5!} 23. Rc5 $2 {[%mdl 8192] [#]} (23. Bf4 $14 {stays ahead.}) 23... Qxe5 $1 {[%mdl 512] Weighted Error Value: White=0.68/Black=0.10} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.6"]
[White "Liang, Jason"]
[Black "Park, Evan"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2351"]
[BlackElo "2208"]
[Annotator "TA"]
[PlyCount "231"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,231,39,32,38,11,18,10,48,31,32,36,79,53,61,36,83,58,118,35,59,34,219,214,213,198,201,197,169,0,0,0,0,0,0,0,0,0,0,0,58,58,58,62,63,59,50,39,90,83,91,82,288,22,275,0,0,0,288,0,28,16,27,28,111,111,111,116,116,116,116,116,116,104,146,109,146,109,109,104,149,146,146,146,146,104,104,102,146,102,146,102,102,102,102,79,146,102,102,102,102,102,146,146,157,146,146,146,157,157,157,157,157,157,157,157,157,157,157,102,102,89,89,89,89,89,89,89,89,89,89,89,89,89,89,89,104,104,104,104,104,15,109,15,15,15,45,15,15,15,15,15,15,0,45,15,29,15,29,15,29,15,15,15,15,15,29,22,29,29,29,15,29,29,29,15,29,29,29,29,44,29,29,29,44,12,44,12,44,22,44,44,44,44,44,12,44,12,44,12,44,12,12,12,12,12,12,12,12,12,12,12,16,12,44,12,12,12,12,12,18,20]} 1. e4 g6 2. d4 Bg7 3. Nc3 a6 4. Be3 d6 5. Qd2 b5 6. O-O-O Nd7 7. f3 Bb7 {B06: Modern Defence.} 8. h4 h5 $1 9. Nh3 Rc8 {9...Ngf6 deserves study.} 10. Ng5 c5 11. e5 {was the old line (11.dxc5).} dxe5 12. dxc5 Ngf6 13. a4 {[#]} bxa4 $146 ({Predecessor:} 13... Qa5 14. axb5 axb5 15. Bxb5 O-O 16. Bxd7 Rcd8 17. Na4 Qa8 18. Qb4 Nxd7 19. Kb1 Bc6 {½-½ (65) Marechal,A (2306)-Le Quang,K (2287) Belgium 2018}) 14. Bc4 $36 {[%mdl 2048] White has good play.} e6 (14... O-O $14) 15. Nce4 (15. Qd3 $1 $16 {And now Bxe6! would win.} e4 16. Ncxe4 Bxe4 17. fxe4 (17. Nxe4 O-O $11)) 15... Bxe4 $14 16. fxe4 {Rhf1 is the strong threat.} Rc6 $2 ({Black should play} 16... O-O $14) 17. Rhf1 $1 $18 Qe7 18. Qb4 O-O {[%cal Rd7c5]} 19. Qb7 $1 {[%cal Rb7c6]} ({Resist} 19. Qxa4 $6 Rc7 $16) 19... Rxc5 20. Qb4 (20. Qxa6 $2 Rcc8 $19) (20. Bxa6 $2 a3 $17) (20. Bxc5 $18 Qxc5 21. Rxd7 (21. Qxa6 a3 $14) 21... Qxc4 22. Rd3) 20... Rfc8 21. Rxd7 Nxd7 22. Rxf7 Qxf7 23. Bxe6 {[%mdl 64] Pin} Rxc2+ 24. Kd1 $1 Qxe6 25. Nxe6 Nf8 ({Avoid the trap} 25... Rxg2 $2 26. Qe7 $18) (25... Bf6 $11) 26. Nxg7 $14 Kxg7 27. Qe7+ Kg8 28. Qxe5 R2c6 29. Bd4 {[%csl Gd4][%cal Re5g7][%mdl 1024] White has compensation.} R8c7 (29... Kf7 $14) 30. Ke2 $16 Rd7 31. Ke3 Re6 $2 (31... Kf7 $16 {is a better defense.}) 32. Qh8+ $18 Kf7 33. Bc5 $2 (33. Bg7 $1 $18 {[%csl Gg7][%cal Rh8f8]} Rd8 34. Bh6) 33... Rd8 $11 34. Bd4 $2 {[%mdl 8192]} (34. g3 $11) 34... Rd7 $1 $18 {[#]} 35. Qg7+ $2 (35. Bg7 $1 $18 {[%csl Gg7][%cal Rh8f8]} Rd8 36. Bh6) 35... Ke8 $11 36. Qg8 Rde7 $1 37. e5 Rxe5+ (37... Rb7 $1 $11) 38. Bxe5 $16 Rxe5+ $11 {[%mdl 4096] Endgame KQ-KRN} 39. Kd3 Rf5 40. Qc4 a5 41. Qxa4+ Kf7 42. Ke4 Kg7 43. Qd4+ Kg8 44. Qd6 Kf7 45. Qc7+ Kg8 46. g3 Kh8 47. Qd8 Kg8 48. Qd6 Kf7 49. b3 Kg8 50. Qe7 Rf7 51. Qg5 Rf5 52. Qh6 Rb5 53. Qc1 {Black must now prevent Qc4+.} Rf5 (53... Rb4+ $142 54. Ke5 Rb5+ 55. Kf6 Rf5+ 56. Ke7 Nh7) 54. Qc4+ Kg7 55. Qc8 Kf7 56. Qb7+ Kg8 57. Qc7 Kh8 58. Ke3 Kg8 59. Kd2 Rf2+ 60. Kc3 Rf5 61. Kb2 Kh8 62. Ka3 Kg8 63. Qe7 Rd5 64. Ka4 Rf5 65. Qe4 ({White should try} 65. Qa7) 65... Kf7 $16 66. g4 hxg4 67. Qxg4 Rh5 68. Ka3 Rf5 69. Qe4 Rh5 70. Kb2 Rf5 71. Kc3 Rc5+ 72. Kd4 Rf5 73. Qb7+ Kg8 74. Ke3 Rh5 75. Kf2 Rf5+ 76. Kg3 (76. Ke2 $16) 76... Rh5 {[#]} (76... Ne6 $11 {remains equal.}) 77. Kg4 (77. Kf3 $1 $16) 77... Rf5 $11 78. Qe7 Rh5 79. Qe4 Rf5 80. Qe3 Kg7 81. Qa7+ Kg8 82. Qe7 Rh5 83. Qf6 Rf5 84. Qc3 Rh5 85. Kh3 Rf5 86. Kg2 Rh5 87. Qc4+ Kg7 88. Qd4+ Kg8 89. Qg4 Rf5 90. Kg3 Kg7 91. Qe2 {Threatening Qe8.} Kg8 92. Qa2 Kg7 93. Kg4 Rh5 94. Qa1+ Kg8 95. Kh3 Rf5 96. Qa2 {aiming for b4+.} Kg7 97. Qb2+ Kg8 98. Kg2 Rh5 99. Qd2 Rf5 100. Kg3 Kg7 101. Qd4+ Kg8 102. Qa4 Rh5 103. Kf2 Rf5+ 104. Ke3 Rh5 105. Qa2 {Hoping for b4+.} Kg7 106. Kd3 Rf5 107. Qa1+ Kf7 108. Qh8 Rh5 109. Qb2 Rf5 110. Ke2 Kg8 111. Qa2 {Threatens to win with b4+.} Kg7 112. Ke1 Re5+ 113. Kd1 Rd5+ {The position is equal.} 114. Kc1 Rc5+ 115. Kb1 Rf5 {Strongly threatening ...Rf1+.} 116. Qb2+ {Black defended with fortune.  Weighted Error Value: White=0.24/Black=0.29} 1/2-1/2

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.7"]
[White "Lu, Jason"]
[Black "Prasanna Raghuram Rao"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "2068"]
[BlackElo "2435"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,60,27,24,32,46,41,52,42,41,37,39,41,35,36,43,181,157,152,66,72,63,59,0,5,3,10,0,3,-48,12,-305,-308,-313,-235,-302,-303,-312,-333,-387,-388,-424,-401,-439,-418,-785,-782,-1397,-1326]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Ng4 {C58: Two Knights: 4 Ng5 d5 5 exd5 Na5 sidelines.} 9. Ne4 f5 {[#]} 10. Be2 $1 h5 {[#]White is slightly better.} 11. h3 $1 fxe4 12. hxg4 {Strongly threatening Nc3.} Bc5 13. b4 (13. Rxh5 $2 Rxh5 14. Bf1 Rh1 $19) (13. gxh5 $2 O-O $19) 13... Qd4 {[%csl Gc5][%cal Rd4f2]} 14. bxc5 {Threatens to win with c3.} Qxa1 (14... O-O $14 15. O-O Qxa1 {[%mdl 64] Double Attack}) 15. Nc3 $18 {[#]} Be6 $146 ({Predecessor:} 15... e3 16. fxe3 Be6 17. gxh5 O-O-O 18. Bg4 Rhe8 19. O-O Qxc3 20. Bxe6+ Rxe6 21. dxc3 Rxd1 22. Rxd1 {1-0 (36) Poetsch,H (2408)-Hernandez,A (2285) Moscow 2011}) 16. Ba3 ({Don't do} 16. Nxe4 $6 h4 $16) ({Much weaker is} 16. Rxh5 $6 O-O-O $11) (16. gxh5 $16 Nb7 17. Nxe4) 16... Qxd1+ $14 17. Bxd1 h4 18. Bb4 (18. Nxe4 $14 Rb8 19. Nc3) 18... Nb7 19. Nxe4 Bxa2 20. Bf3 Bd5 21. d3 (21. Bc3 $11) 21... Nd8 (21... Kd7 $15) 22. c4 $2 {[%mdl 8192]} (22. Bc3 $11) 22... Bxe4 $19 23. dxe4 Ne6 24. Bc3 a5 {[%cal Ba7a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} ({Not} 24... Nxc5 25. Ke2 $17) 25. Bxe5 a4 26. Bd1 a3 27. Bc2 O-O 28. f3 Rfd8 29. Bc3 (29. Ke2 $142 a2 30. Ra1) 29... a2 30. Kf2 Ra3 {Never resign too early!  Weighted Error Value: White=0.89/Black=0.22} 0-1

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.05"]
[Round "5.8"]
[White "Zaloznyy, Mike"]
[Black "Tunc, Skyler"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "1996"]
[BlackElo "1779"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,76,0,-1,-8,0,-17,15,0,0,0,0,0,0,0,0,0,0,0,0,-40,0,0,0,-23,-10,-37,-14,-22,-22,-11,0,-6,0,0,0,0,0,0,0,0,0,2,6,4,16,27,26,0,0,0,1273,1262,1254,1233,1183,1172,29992,756,1367]} 1. Nf3 d5 2. c4 c6 3. b3 Nf6 4. g3 g6 5. Bg2 Bg7 6. Bb2 O-O 7. O-O Nbd7 8. d3 b6 9. Nbd2 Bb7 10. Rc1 Re8 11. cxd5 {A11: English Opening: 1...c6.} cxd5 {[#]} 12. Ne5 $146 ({Predecessor:} 12. Rc2 Rc8 13. Rxc8 Qxc8 14. Qb1 Nh5 15. Rc1 Qb8 16. Bxg7 Nxg7 17. Bh3 Nf6 18. Rc2 Rd8 19. Qc1 Nge8 20. Qb2 Bc8 21. Bg2 Bb7 22. Bh3 Bc8 23. Bg2 {½-½ (23) Menon,M (1666)-Albi Bachini Conti,S (1701) Arco 2015}) 12... Rc8 13. Bh3 {The position is equal.} Rxc1 14. Qxc1 e6 15. Ndf3 Nxe5 16. Nxe5 Nd7 17. f4 Nxe5 18. fxe5 Qd7 19. Bd4 Qe7 20. Bg2 Rc8 21. Qd2 Qa3 22. g4 Rc7 23. h4 Qe7 24. g5 Qd8 25. Bf3 Qc8 26. Bg4 Rc2 27. Qf4 Qd7 28. a4 Bc8 29. h5 Qc7 30. Kg2 Qe7 31. Kg3 Rc7 32. Bb2 Bf8 33. hxg6 hxg6 34. Rh1 {[#] Threatens to win with Ba3!} Qb4 {[%mdl 8192]} (34... Rc2 $11 35. Bd4 Bg7) 35. Qf6 $18 {[%csl Gf6][%cal Rh1h8]} Bg7 36. Qd8+ {[%mdl 64] Double Attack} Bf8 37. Qxc7 Qxb3 {[#]} 38. Qc3 (38. Rf1 $142 $1 f5 39. exf6 Qxb2 40. Rh1 Bd6+ 41. Qxd6 Qe5+ 42. Qxe5 Bd7 43. Bxe6+ Bxe6 44. Qxe6+ Kf8 45. Rh8#) 38... Qb4 {Weighted Error Value: White=0.09/Black=0.36} 1-0

[Event "2nd Colonial Open 2021"]
[Site "Sterling"]
[Date "2021.04.04"]
[Round "5.9"]
[White "Yogeshwar Yehamandram Sridhar"]
[Black "Peraino, Andrew"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1794"]
[BlackElo "2029"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.04.02"]
[EventType "swiss"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,105,43,34,35,39,72,25,23,29,30,28,131,19,18,14,66,27,127,120,100,106,147,115,189,165,189,157,204,91,70,-62,-36,-56,10,8,68,67,64,31,46,40,49,0,35,25,47,49,54,53,48,-6,154,0,163,168,166,155,223,165,152,152,160,146,209,0,51,68,61,60,187,0,104,82,611,612,585,566,566,490,499,437,627,612,2585,1463,29989,29990,29990,29991,29991,29992,29994,29994,29996,29995]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bc4 c6 6. Bb3 O-O 7. a4 Qc7 {B06: Modern Defence.} 8. O-O {[#]} a6 $146 ({Predecessor:} 8... e5 9. h3 Nbd7 10. Be3 exd4 11. Bxd4 Re8 12. Re1 Nf8 13. e5 dxe5 14. Bxe5 Qd7 15. Ng5 {½-½ (29) Geshko,A (2172)-Zakhartsov,V (2490) St Petersburg 2018}) 9. Qe2 Bg4 {White has an edge.} 10. Be3 Nbd7 11. h3 Bh5 (11... Bxf3 $11 12. Qxf3 c5) 12. Bf4 ({White should try} 12. g4 $16) 12... e5 13. dxe5 dxe5 (13... Bxf3 $11 14. Qxf3 Nxe5) 14. Be3 (14. Bg5 {is more complex.} h6 15. Be3 g5 16. Rfd1 b5 17. g4) 14... Kh8 (14... Bxf3 $11 {remains equal.} 15. Qxf3 Qd6) 15. a5 Bxf3 16. Qxf3 (16. gxf3 $6 Nh5 $11) 16... Nh5 17. g3 ({Not} 17. Bxf7 Nb8 $15) 17... f5 (17... Qd6 $16 {is a better defense.}) 18. exf5 $1 $18 Rxf5 19. Qd1 Nf4 20. Bxf4 (20. gxf4 $18 exf4 21. Bd4) 20... exf4 $16 21. g4 (21. Be6 $14 fxg3 22. Bxf5 (22. Bxd7 $2 Rxf2 23. Qg4 Rd2 $19) (22. Qxd7 $2 gxf2+ 23. Kh1 Qf4 $19) 22... gxf5 23. Kh1) 21... Rff8 22. Ne4 Rad8 (22... Rae8 $15 23. Qd6 Qd8) 23. Qd6 $1 $11 {[%cal Rd6c7]} Qc8 (23... Qxd6 $11 24. Nxd6 Bxb2) 24. Be6 $1 $36 {[%mdl 2048] Strongly threatening Rfd1. White has good play.} Qb8 25. Rad1 Ne5 26. Qxb8 Rxb8 27. Nd6 Nf3+ {[%mdl 64] Discovered Attack} 28. Kh1 {And now Nf7+ would win.} Bxb2 29. Nf7+ Kg7 30. Rd7 {Threatens to win with Ng5+.} Kf6 31. Rfd1 {[#]} Rfe8 $2 (31... Rxf7 $1 $11 32. Bxf7 Ne5 {[%mdl 64] Double Attack}) 32. Bb3 $2 (32. Bc4 $16 {Black must now prevent R1d6+.} Re1+ 33. Rxe1 Nxe1 34. g5+ Kg7 35. Nd6+ Kh8 36. Nxb7) 32... Re1+ $2 (32... Ba3 $1 $11 {and Black has nothing to worry.}) 33. Rxe1 $18 Nxe1 34. Nd6 h5 (34... Nf3 $16) 35. Rf7+ Kg5 36. Ne4+ Kh4 37. gxh5 g5 (37... Re8 $16 {was worth a try.}) 38. Nd6 $2 (38. c3 $1 $18) 38... Kxh3 (38... Rd8 $11 39. Ne4 Re8) 39. Be6+ $14 Kh4 40. h6 {Hoping for Bc8.} Nxc2 {[#]} ({Better is} 40... Rd8 $1 $14 41. h7 (41. Nxb7 $2 Rd1 $19) 41... Nxc2) 41. Rg7 $2 Rd8 ({Don't go for} 41... Bxg7 $2 42. hxg7 Rd8 43. Nxb7 $18) (41... Kh5 $11 {keeps the balance.}) 42. Nf5+ $16 Kh5 $2 {[%mdl 8192] [#]} (42... Kg4 $16) 43. f3 $1 $18 {[%cal Re6f7]} Rf8 44. Bf7+ Rxf7 45. Rxf7 {[%mdl 4096] Endgame aiming for Rg7! KRN-KBN} Kg6 46. Rxb7 Bc3 {[#]} (46... Bf6 $142 47. Ne7+ Kxh6 48. Ng8+ Kg6) 47. Rb6 $1 Kxf5 (47... Nb4 48. Ne7+) 48. Rxc6 Bxa5 49. h7 {White mates.} Nd4 50. Rc5+ {[%mdl 64] Double Attack} Kg6 51. h8=Q Nxf3 52. Rxa5 Nh4 53. Qg8+ {Weighted Error Value: White=0.29/Black=0.70} 1-0

