[Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.20"] [Round "1.4"] [White "Akobian, Varuzhan"] [Black "Dominguez Perez, Leinier"] [Result "1/2-1/2"] [ECO "D35"] [WhiteElo "2625"] [BlackElo "2739"] [Annotator "TA"] [PlyCount "65"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,65,13,33,16,29,35,37,13,35,15,20,20,14,17,30,7,32,27,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Rb1 Be7 {D35: Queen's Gambit Declined: Exchange Variation} 8. Nf3 O-O 9. Bc4 a6 10. a4 Qc7 {LiveBook: 4 Games. next ...cxd4 is good for Black.} 11. Bd3 Nc6 12. O-O cxd4 13. cxd4 Nb4 14. Ba3 Nxd3 15. Qxd3 Bxa3 16. Qxa3 {[#]} Bd7 $146 17. Ne5 {[#] Black must now prevent Qe7.} Rfc8 18. Rfc1 Qd8 $1 19. Nxd7 Qxd7 {The position is equal.} 20. Qb2 Qxa4 21. Rxc8+ Rxc8 22. Qxb7 $11 {[%mdl 4096] Endgame KQR-KQR} Qc4 {[#] ( -> ...Qc1+!)} 23. h3 h6 24. d5 exd5 25. exd5 Rd8 26. Rd1 Qb5 27. Qxb5 axb5 {KR-KR} 28. d6 Kf8 29. Rd5 Rb8 30. d7 Ke7 31. d8=Q+ Rxd8 32. Rxb5 Kf8 33. g3 {Precision: White = 66%, Black = 76%.} 1/2-1/2 [Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.22"] [Round "3.1"] [White "Akobian, Varuzhan"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "D85"] [WhiteElo "2625"] [BlackElo "2762"] [Annotator "TA"] [PlyCount "80"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 30,80,11,11,15,11,9,8,9,12,36,34,24,7,4,16,22,5,22,18,18,18,22,10,12,0,0,0,0,0,0,-10,-9,-11,-4,-8,0,0,8,8,8,8,8,0,0,0,24,24,28,26,45,45,59]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Rc1 Qa5 9. Qd2 O-O 10. Nf3 Rd8 11. d5 e6 12. Bg5 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} f6 13. Be3 Nc6 14. h4 (14. Bd3 Ne7 15. c4 Qxd2+ 16. Bxd2 b6 17. O-O Ba6 18. Rfe1 Rac8 19. Bf1 exd5 20. exd5 {1-0 (46) Yu,Y (2759)-Svidler,P (2753) Shenzhen 2018}) 14... exd5 15. exd5 Bg4 16. Be2 {LiveBook: 4 Games} c4 17. Bxc4 Bxf3 18. gxf3 Ne5 $1 {[%csl LRc4,LRf3][%mdl 64] [#] Double Attack} 19. Be2 Qxd5 20. Qxd5+ Rxd5 21. Rd1 $146 (21. Kf1 {keeps more tension.} Rc8 22. c4 Rdd8 23. h5 f5 24. hxg6 hxg6 25. c5) 21... Rxd1+ 22. Bxd1 Rc8 23. h5 f5 24. Bb3+ Kf8 25. Ke2 b6 26. hxg6 hxg6 27. Rh7 Re8 28. Bc1 {[#] And now Ba3+ would win.} Nd7+ 29. Kd2 Nc5 30. Ba3 Re7 {Threatens to win with ...Bxc3+!} 31. Bxc5 bxc5 $11 {[%mdl 4096] Endgame KRB-KRB} 32. Kd3 Re1 33. Rh4 Rf1 34. Ra4 Be5 35. Rxa7 Rc1 36. Kc4 Rxc3+ 37. Kd5 c4 38. Bxc4 Bh2 39. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Bg1 40. a5 Bxf2 {Accuracy: White = 65%, Black = 56%.} 1/2-1/2 [Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.24"] [Round "5.4"] [White "Akobian, Varuzhan"] [Black "Sevian, Samuel"] [Result "0-1"] [ECO "E32"] [WhiteElo "2625"] [BlackElo "2642"] [Annotator "TA"] [PlyCount "68"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,68,4,0,23,13,36,7,14,7,9,8,12,-4,8,-33,-29,-36,-8,-32,-38,-39,-24,-70,-48,-58,-14,-19,-18,-25,0,0,0,-83,-95,-60,-79,-86,-77,-81,-67,-93,-2,-146,-145,-141,-120,-223,-222,-710,-709,-700,-694,-675,-676]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 d6 7. g3 e5 8. Nf3 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} Nc6 9. Bg2 {[%cal Rd4e5] LiveBook: 7 Games} Ne4 (9... Re8 10. dxe5 dxe5 11. Bg5 h6 12. Rd1 Qe7 13. Bxf6 Qxf6 14. O-O Bg4 15. h3 Bh5 16. g4 Bg6 17. Rd2 Rad8 {1-0 (37) Dreev,A (2667)-Harikrishna,P (2726) Dubai 2014}) 10. Qe3 {White has an edge.} f5 11. b3 $146 ({Predecessor:} 11. O-O Qf6 12. Rd1 exd4 13. Nxd4 Bd7 14. Nxc6 Bxc6 15. Qd4 Qxd4 16. Rxd4 Rae8 {1-0 (44) Rohde,M (2537)-Feldman,E Parsippany 1999}) 11... Qf6 {[%cal Rc6d4]} 12. Bb2 exd4 13. Nxd4 Bd7 14. Rb1 {aiming for Nxc6.} Qg6 15. O-O Rae8 16. Qf4 a6 17. Rfe1 h6 18. Rbd1 Ne5 19. Nf3 {[%cal Rb2e5]} Ng4 20. Rf1 Qf7 21. Nd4 Qh5 {[%csl Gg4][%cal Rh5h2]} 22. h3 Ngf6 (22... c5 {feels hotter.} 23. Nf3 Ngf6 24. Nd2 Qxe2 25. Rfe1 Qh5) 23. Qf3 Qg6 24. e3 (24. Qd3 $1 $11) 24... Ng5 $36 {[%mdl 2048] Black has strong initiative.} 25. Qxb7 {Black must now prevent h4.} f4 $1 {[%cal Rf4g3]} 26. exf4 Nxh3+ 27. Bxh3 Bxh3 28. Rfe1 {[#]} ({Avoid the trap} 28. Qxc7 $2 Re3 $3 $19 {[%mdl 512]}) 28... Ne4 (28... Re4 $1 $17 {Strongly threatening ...Qg4.} 29. f5 (29. Qxc7 Rxf4 30. Nc6 Kh7 $16) 29... Bxf5 30. Qxc7 Bg4) 29. Qd5+ (29. f5 $1 $11 {was the only way to keep the balance.} Bxf5 30. Nxf5 Qxf5 31. Qd5+ Qxd5 32. Rxd5) 29... Kh7 30. Ne2 Bf5 31. Kg2 (31. Nc3 $17) 31... Nc5 $19 32. Nc3 $2 (32. Qd2) 32... Rxe1 {[%mdl 64] Overworked Piece. Black is clearly winning.} 33. Rxe1 Nd3 {[%mdl 64] Double Attack} 34. Re4 Bxe4+ {Accuracy: White = 28%, Black = 54%.} 0-1 [Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.27"] [Round "7.1"] [White "Akobian, Varuzhan"] [Black "Nakamura, Hikaru"] [Result "0-1"] [ECO "A41"] [WhiteElo "2625"] [BlackElo "2746"] [Annotator "TA"] [PlyCount "94"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,94,26,31,36,35,36,37,28,3,11,6,23,0,0,0,11,-35,-24,-25,0,0,0,0,0,0,0,0,0,-21,-6,-28,-39,-53,-49,-54,-48,-54,-54,-52,-41,-49,-39,-46,-35,-90,-93,-89,-95,-99,-89,-119,-87,-87,-85,-85,-85,-85,-78,-82,-87,-95,-76,-82,-61,-84,-77,-194,-192,-183,-187,-316,-296,-283,-254,-540,-523,-497,-474,-475,-475,-4133,-3941,-1741,-1635]} 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 Nc6 5. d5 Ne5 6. Nxe5 Bxe5 7. e4 Nf6 {A41: 1 d4 d6: Tartakower System and Modern Defence} 8. Bd3 O-O 9. O-O e6 {White is slightly better.} 10. h3 exd5 11. cxd5 $146 ({Predecessor:} 11. exd5 Nd7 12. Bh6 Re8 13. Qd2 Nc5 14. Bc2 a5 15. Rae1 {0-1 (47) Cvitan,O (2491)-Onischuk,V (2601) Tallinn 2016}) 11... Nh5 12. f4 Bd4+ 13. Kh2 $1 Qh4 14. Qe1 Qxe1 15. Rxe1 Bf2 16. Rf1 Bg3+ 17. Kg1 f5 18. Rf3 Bxf4 19. Bxf4 fxe4 20. Bxe4 {And now Bh6 would win.} Nxf4 21. Raf1 g5 22. h4 Bg4 23. Rg3 h5 $1 $36 {[%mdl 2048] Black has some pressure.} 24. hxg5 Rae8 25. Bf3 $1 Re5 26. Bxg4 hxg4 27. Rxg4 Nxd5 {Hoping for ...Rxf1+.} 28. Nxd5 (28. Rf3 $15) 28... Rxf1+ $17 29. Kxf1 Rxd5 $15 {[%mdl 4096] Endgame KR-KR} 30. Ke2 Kg7 31. Rc4 c6 32. Re4 Kg6 33. Re7 Rb5 $1 {[%cal Rb5b2]} ({Of course not} 33... Kxg5 $6 34. Rxb7 a5 35. Rc7 $11) 34. b3 Kxg5 35. Rd7 {[#]} d5 $1 36. Kd3 Kf6 37. Kc3 a5 38. Rc7 Ke6 39. a3 {[#]} (39. g4 $17) 39... d4+ $1 $19 {[%mdl 512]} 40. Kc4 {[#]} (40. Kxd4 Kd6) 40... d3 $1 {[%cal Rd3d2][%mdl 512] ( -> ...d2)} 41. Kc3 {[#]} (41. Rh7 {is the only way for White.}) (41. Kxd3 Kd6) 41... d2 $1 {[%cal Rd2d1][%mdl 512]} 42. Kxd2 Rxb3 43. g4 $2 (43. a4) 43... a4 {Black is clearly winning.} 44. g5 {If only White now had time for g6....} Kd6 45. Rf7 {[#]} b5 $1 46. g6 (46. Rf6+ $142 Kc7 47. Rf4) 46... Rxa3 47. g7 Rg3 {Accuracy: White = 45%, Black = 88%.} 0-1 [Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.29"] [Round "9.3"] [White "Akobian, Varuzhan"] [Black "Caruana, Fabiano"] [Result "0-1"] [ECO "A80"] [WhiteElo "2625"] [BlackElo "2828"] [Annotator "TA"] [PlyCount "98"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,98,24,20,0,14,2,34,12,94,0,0,0,14,-33,-30,-57,-39,-32,0,-25,0,-45,-35,-80,-30,-79,-22,-123,-112,-127,-147,-197,-200,-205,-203,-219,-228,-281,-294,-283,-118,-118,-116,-107,-61,-74,-71,-83,-63,-72,-71,-110,-106,-125,-114,-115,-122,-121,-128,-204,-197,-314,-313,-301,-243,-227,-241,-213,-216,-322,-320,-454,-455,-429,-447,-442,-439,-400,-394,-508,-504,-462,-333,-326,-326,-303,-319,-496,-489,-487,-475]} 1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. e3 e6 5. Nf3 a6 (5... Be7 6. Bd3 Ne4 7. Bxe7 Qxe7 8. O-O O-O 9. Ne2 Nd7 10. c4 c6 11. Qc2 Kh8 12. a3 a5 13. Rab1 a4 14. Nc3 Nxc3 15. Qxc3 g5 16. Rbc1 g4 17. Nd2 Nf6 18. Kh1 Bd7 {1-0 (51) Duda,J (2738)-Potapov,P (2516) St Petersburg 2018}) 6. Ne5 {A80: Dutch Defence: Unusual White second moves} c5 7. g4 cxd4 $146 ({Predecessor:} 7... fxg4 8. Nxg4 Be7 9. Bxf6 Bxf6 10. Nxf6+ Qxf6 11. dxc5 O-O 12. Qd2 Nd7 13. Bg2 {½-½ (38) Schwenk,H (2164)-Arnold,G (2221) ICCF email 2016}) 8. exd4 {White is slightly better.} Qb6 (8... fxg4 $11 9. Nxg4 Be7) 9. Na4 ({White should try} 9. gxf5 $1 $16 {Strongly threatening Bxf6.} Nc6 10. Nxc6 (10. Bxf6 Qxb2 11. Qh5+ g6 $18) 10... bxc6 11. Na4 Qa5+ 12. c3) 9... Qa5+ $11 10. c3 {Black must now prevent gxf5.} fxg4 11. Bxf6 gxf6 12. Nxg4 Nd7 13. Ne3 h5 14. Bd3 f5 15. b4 Qc7 16. Rc1 b6 17. Qe2 Kf7 (17... Kd8 $17 {next ...Bxb4! is good for Black.} 18. Qd2 Bb7) 18. Kd1 (18. O-O $11 {keeps the balance.}) 18... Nf6 $1 $17 19. Nb2 {[#]} Bd7 $1 20. c4 Rc8 ({Don't do} 20... Bxb4 21. cxd5 Qf4 22. dxe6+ Bxe6 23. Bc4 $17) 21. Rc2 {[#]} Qf4 $1 ({But not} 21... Bxb4 22. Qf3 $17) 22. cxd5 Bxb4 23. Bc4 {aiming for Nd3.} exd5 ({Resist} 23... Qxd4+ 24. Qd3 $17) 24. Nxd5 Nxd5 (24... Qxd4+ $19 25. Kc1 Rxc4 {[%mdl 64] Remove Defender} 26. Rxc4 Qxd5) 25. Bxd5+ Kf6 26. Qe3 Bd6 27. Qxf4 Bxf4 28. Nd3 Bb8 29. Rxc8 Bxc8 30. Ke2 Re8+ 31. Kd2 Rd8 32. Rc1 Bxh2 33. Bf3 Be6 34. Rc6 (34. Rh1 $17 Bd6 35. a4) 34... Rd6 $19 35. Rc1 (35. Rxd6 $142 Bxd6 36. Bxh5) 35... Rxd4 36. Ke3 Rd8 37. Bxh5 Bxa2 38. f4 Bd5 39. Ne5 (39. Rb1 $142) 39... Rh8 40. Bf3 (40. Rd1 {was necessary.}) 40... Rh4 41. Nd3 Rh3 42. Ne5 Be4 43. Rc8 Rh4 44. Nd3 Bg1+ 45. Ke2 Bxd3+ 46. Kxd3 Rxf4 47. Bb7 a5 48. Rf8+ (48. Rc4 $142 Rf1 49. Bc6) 48... Ke7 49. Rg8 Bc5 {Accuracy: White = 41%, Black = 50%.} 0-1 [Event "US-ch Open 2019"] [Site "Saint Louis"] [Date "2019.03.30"] [Round "10.5"] [White "Akobian, Varuzhan"] [Black "Shankland, Samuel"] [Result "1/2-1/2"] [ECO "D48"] [WhiteElo "2625"] [BlackElo "2731"] [Annotator "TA"] [PlyCount "80"] [EventDate "2019.03.20"] [EventType "swiss"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,80,25,0,0,0,0,-6,0,0,0,-22,-17,-20,41,0,0,0,20,20,38,42,234,62,154,168,145,153,161,81,141,163,160,66,85,81,75,34,37,27,43,66,41,51,53,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. a4 {[%cal Ra4b5]} Bb7 {D48: Semi-Slav: Meran System: 7...b5 8 Bd3 a6} (9... b4 10. Ne4 c5 11. Nxf6+ Nxf6 12. b3 Bb7 13. Bb2 cxd4 14. Bxd4 Be7 15. O-O O-O 16. Ne5 Rc8 17. Bc4 a5 18. Rc1 Nd5 19. Qf3 Ba8 20. Qg3 Bh4 {1-0 (40) Mamedyarov,S (2791)-Kezin,R (2455) Sochi 2017}) 10. b3 b4 11. Ne4 c5 12. Nxf6+ gxf6 13. Bb2 $146 ({Predecessor:} 13. O-O f5 14. Bb2 Rg8 15. Qe2 cxd4 16. Ne1 dxe3 17. Qxe3 Qg5 18. Qxg5 Rxg5 {0-1 (64) Hoenlinger,B-Rellstab,L Essen 1947}) 13... cxd4 14. exd4 Qc7 (14... Rg8 $11) 15. Rc1 Qf4 {White should prevent ...Rg8.} 16. Be2 Bd6 17. g3 $36 {[%mdl 2048] White fights for an advantage.} Qh6 18. O-O Ke7 $2 {[#]} (18... O-O $14) 19. Ne1 $2 (19. d5 $1 $18 {[%mdl 512]}) 19... Rhc8 (19... Nb6 $14) 20. Bf3 $16 Bxf3 21. Qxf3 Qg5 22. Nd3 (22. Ng2 $18) 22... h5 {[#]} ({Black should play} 22... Qd5 23. Qxd5 exd5) 23. Nc5 $1 {[%cal Rc5d7]} h4 {[#]} 24. Nxd7 ({Better is} 24. Rfe1 $1 $16 {Threatens to win with Nxd7.} hxg3 25. hxg3 Bxc5 26. dxc5) 24... Kxd7 $14 25. Qb7+ Kd8 {[%cal Rh4g3]} 26. d5 hxg3 27. dxe6 {[%csl Ge6][%cal Rb7d7]} gxf2+ 28. Kh1 {[%csl Ge6][%cal Rb7d7]} fxe6 29. Rcd1 Qc5 30. Rxf2 {White threatens Rxd6+! and mate.} Qc6+ {The position is equal.} 31. Qxc6 Rxc6 32. Rxf6 {And now Rf8+ would win.} Ke7 33. Re1 Bc7 34. Rg6 Rf8 35. Rg7+ Ke8 36. Be5 Bxe5 37. Rxe5 Rf2 38. Rg2 Rf4 39. Rge2 Kd7 40. Kg2 Rd4 {Accuracy: White = 51%, Black = 43%.} 1/2-1/2