[Event "USA Championship 2021"] [Site "Saint Louis"] [Date "2021.10.20"] [Round "10.1"] [White "Swiercz, Dariusz"] [Black "Bruzon Batista, Lazaro"] [Result "1-0"] [ECO "D37"] [WhiteElo "2647"] [BlackElo "2645"] [Annotator "TA"] [PlyCount "83"] [EventDate "2021.10.06"] [EventCountry "USA"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,83,32,16,7,27,1,5,8,0,-27,17,15,39,39,43,45,43,48,59,59,61,46,54,52, 68,54,98,94,146,71,98,66,89,86,129,129,162,162,206,206,222,222,224,224,224,206, 197,181,181,181,362,234,234,231,243,225,257,251,286,286,389,355,388,327,331, 318,309,282,232,147,416,412,2255,1933]} 1. d4 Nf6 ({After the move-order} 1... d5 2. c4 e6 3. Nc3 Be7 4. Bf4 Nf6 5. e3 O-O {, White has the tricky attempt} 6. a3 $5 {Maybe the best way to meet White's idea is} b6 $5 (6... Nbd7 7. Nb5 $1 Ne8 8. Nf3 $14 {Gelfand,B (2739)-Aronian,L (2805) Wijk aan Zee 2012/ Practice has proven this is pleasant for White, despite the result of the game - see the notes by Marin in CBM 147.}) ({The idea is to induce Black to go for the older} 6... c5 {line, which is nowadays under a cloud.} {A recent example:} 7. dxc5 Bxc5 8. Nf3 Nc6 9. Qc2 Qa5 10. Rd1 Be7 11. Be2 Ne4 (11... dxc4 12. Bxc4 Nh5 13. O-O Nxf4 14. exf4 g6 15. g3 Rd8 16. Rxd8+ Qxd8 17. Rd1 $14 {Kramnik,V (2759)-Carlsen,M (2772) Dortmund 2009/ This was one of the most important games to cause the turn away from the ...c5 lines - for more detail see the notes in CBM 131.}) 12. cxd5 Nxc3 13. Qxc3 (13. bxc3 {also deserves attention:} exd5 14. O-O Be6 (14... Bf6 15. c4 $5 $32 Be6 16. Bg5 dxc4 17. Bxf6 gxf6 18. Bxc4 Qc5 19. Rc1 Qxc4 20. Qxc4 Bxc4 21. Rxc4 Rfd8 22. Rb1 Rd7 23. g3 a6 24. Kg2 $36 {[%csl Rf6,Rf7,Rh7] Giri,A (2752)-Kasimdzhanov,R (2700) Rosmalen rpd 2014}) 15. a4 b6 16. Bd3 g6 (16... h6 $142 $5 17. Rb1 $14 {/<=>}) 17. Qe2 Bf6 18. Bb5 Rac8 19. Ng5 $1 Bf5 20. g4 Be6 21. Nxe6 fxe6 22. Bd6 Rfd8 23. Ba6 Rxd6 24. Bxc8 Qxa4 25. e4 Ne7 26. f4 $16 {Paredes,C (2252)-Sage,F (2339) email 2011}) 13... Qxc3+ 14. bxc3 exd5 15. Rxd5 Bxa3 16. Nd4 Nxd4 (16... a5 $5 17. Kd2 a4 $132 { might well be better, in mail games Black has successfully defended this position.}) 17. exd4 b6 18. Kd2 Be6 $6 {is weaker, as now} (18... a6 $142 19. Bf3 (19. Ra1 Be6 20. Re5 Bd6 21. Re4 Bxf4+ 22. Rxf4 b5 23. Bf3 Ra7 24. d5 Bc8 25. c4 bxc4 26. Ra5 Bd7 27. Rxc4 Bb5 28. Rc5 Rd7 29. Ke3 $14 {/=, Bodiroga,P (2410)-Miranovic,R (2385) Sombor 2009}) 19... Be6 (19... Bb7 20. Rd7 Bxf3 21. gxf3 $14) 20. Rh5 Rac8 21. Rb1 (21. Bb7 $1 Bb2 22. Bxc8 Rxc8 23. Rb1 Bxc3+ 24. Kd3 $14) 21... g6 22. Rg5 Be7 23. Rg3 b5 24. Bb7 Rcd8 25. Rd3 b4 $1 $11 { Klemettinen,P (2428)-Glorstad,T (2362) email 2011}) 19. Rb5 Bd7 20. Rb3 Be7 21. Bf3 $36 {puts Black's queenside under heavy pressure:} Ba4 22. Rb2 Rad8 23. Ra1 b5 24. Bc6 a6 25. Bb7 Bd6 26. Be3 a5 27. Bc6 Rb8 28. d5 Rfd8 29. Kd3 Bf8 30. Bd4 f6 31. Ke4 Bd6 32. c4 Bb4 33. Ba7 (33. g4 $5 $16) 33... f5+ 34. Kf3 Rbc8 35. cxb5 Bxb5 36. Bxb5 Bc3 37. Rab1 Bxb2 38. Rxb2 Rxd5 {Carlsen,M (2853) -Nakamura,H (2814) Saint Louis 2015} 39. g3 $16) 7. Nb5 (7. g4 c5 $5 $146 8. dxc5 Bb7 9. Bg2 Nbd7 10. cxd5 bxc5 11. Nge2 Nb6 12. O-O Nfxd5 $132 13. Qc2 { ½, Ivanchuk,V (2731)-Sargissian,G (2668) WChT Tsaghkadzor 2015}) 7... Na6 8. Nf3 Bb7 9. Qc2 c6 10. Nc3 c5 11. Rd1 cxd4 12. Nxd4 Nc5 13. Be2 Qc8 14. O-O dxc4 15. Bxc4 a6 16. Rc1 b5 17. Ba2 Qe8 18. f3 Rc8 19. e4 Nfd7 20. Be3 Ne5 $11 { Jobava,B (2664)-Swiercz,D (2617) Abu Dhabi 2015}) 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 {[%csl Gb2,Gc3,Rc7,Gd4,Ge3,Re7,Gf2,Gg7][%CAl Gd4e5, Gf6g7,Gf6g5,Ge5f4,Gf4g5,Gf4e5,Ge3f4,Gf3g5,Gf3e5,Re5d6,Rd6e7,Gd4c5,Rc5d6,Rd6c7, Gb6a7,Gb6a5,Gc5b4] [#] D37: Queen's Gambit Declined: 5 Bf4.} Ne4 (7... Nh5 8. Bd3 (8. Bg3 c6 9. Bd3 g6 10. b4 b6 11. O-O bxc5 12. bxc5 Nxg3 13. hxg3 e5 14. Qa4 Qc7 15. Be2 exd4 16. exd4 Bf6 17. Rac1 Rb8 18. Bd3 Kg7 19. Rfe1 h5 20. Ne2 Rh8 21. Rb1 Rxb1 22. Rxb1 Nf8 23. Ba6 Ne6 24. Bxc8 Rxc8 25. Qa6 Nd8 26. Nf4 Rb8 27. Qd3 Rxb1+ 28. Qxb1 h4 29. Kh2 hxg3+ 30. fxg3 Qc8 31. Qe1 Ne6 32. Qe3 Nxf4 33. Qxf4 Qh8+ 34. Kg1 Qe8 35. Kf2 Qe4 36. Qxe4 dxe4 37. Ne5 Bxe5 38. dxe5 f5 39. Ke3 Kf7 40. g4 Ke6 41. Kd4 e3 42. Kxe3 Kxe5 43. gxf5 Kxf5 44. Kf3 a5 45. a4 Ke5 46. Kg4 Kd5 47. Kg5 Kxc5 48. Kxg6 Kd4 49. g4 c5 50. g5 c4 51. Kf6 c3 52. g6 c2 53. g7 c1=Q 54. g8=Q Qf4+ 55. Ke6 Kc5 56. Qg1+ Kb4 57. Qd1 Qe3+ 58. Kd5 Qc5+ 59. Ke4 Qc6+ 60. Ke3 Qe6+ 61. Kd2 Qa2+ 62. Ke3 Qa3+ {1/2-1/2 (62) Bareev,E (2702)-Vaganian,R (2623) New Delhi/Teheran 2000 CBM 081 [Dautov,R]}) 8... Nxf4 9. exf4 b6 (9... c6 10. Qc2 h6 11. O-O Qc7 12. Ne5 Nxe5 13. fxe5 Bd7 14. a3 b6 15. b4 bxc5 16. bxc5 f6 17. f4 Rab8 18. g3 Qa5 19. Ne2 Be8 20. Bg6 Bxg6 21. Qxg6 Qd2 22. Rf2 Qe3 23. Qg4 Kh7 24. Qxe6 Rbe8 25. a4 fxe5 26. Qxe5 Qd3 27. Qh5 Bf6 28. Raf1 g6 29. Qg4 h5 30. Qd7+ Re7 31. Qd6 Kg7 32. Nc1 Qf5 33. Rd1 Rfe8 34. Qxc6 Re1+ 35. Rf1 Bxd4+ 36. Rxd4 Rxf1+ 37. Kxf1 Qh3+ 38. Kf2 Qxh2+ 39. Kf1 Qh1+ 40. Kf2 Re1 {0-1 (40) Giri,A (2775)-Radjabov,T (2724) Geneva 2017 CBM 180 [Radjabov,T]}) 10. b4 (10. c6 Nb8 11. Ne5 Bd6 12. a3 Bxe5 13. dxe5 Nxc6 14. Qh5 g6 15. Qh6 f5 16. h4 Rf7 17. h5 g5 18. g4 Qf8 19. Qxg5+ Rg7 20. Qh4 Rxg4 21. Qh2 Qh6 22. Ne2 Bb7 23. Rc1 Rc8 24. b4 Kh8 25. f3 Rgg8 26. Kf2 Qf8 27. Bb5 Nb8 28. Nd4 c5 29. Nxe6 Qe7 30. Ng5 h6 31. e6 hxg5 32. fxg5 Qxg5 33. Qe5+ Qg7 34. Rhe1 Nc6 35. Bxc6 Rxc6 36. Qxg7+ Kxg7 37. Rg1+ Kh7 38. Rxg8 Kxg8 39. Rg1+ Kh7 { 0-1 (39) Esipenko,A (2624)-Aronian,L (2758) Douglas 2019 CBM 193 [Seyb,A]}) 10... a5 11. a3 c6 12. O-O Qc7 (12... Ba6 13. Bxa6 Rxa6 14. Qe2 Ra8 15. Ne5 Nxe5 16. fxe5 b5 17. Rab1 axb4 18. axb4 Qd7 19. Ra1 Ra7 20. Ra2 Rfa8 21. Rfa1 Qb7 22. Qb2 Ra6 23. g3 f5 24. exf6 Bxf6 25. Rxa6 Rxa6 26. Ne2 Qa8 27. Rxa6 Qxa6 28. Kg2 Qa8 29. Ng1 Qa4 30. Nf3 $14 {Ding Liren (2755)-Shankland,S (2661) WChT Tsaghkadzor 2015 See the notes to this game by Mokal in CBM 166.} g5 31. Qe2 Kf7 32. Qd3 Kg7 33. Qe3 Kf7 34. Nxg5+ Bxg5 35. Qxg5 Qxb4 36. Qh5+ Kg7 37. Qe5+ Kf7 38. Qc7+ Kf6 39. Qe5+ Kf7 40. g4 Qb1 41. Qc7+ Kf6 42. Qd8+ Kf7 43. Qd7+ Kf6 44. h4 Qe4+ 45. Kg3 h6 46. Qe8 Kg7 47. Qe7+ Kg8 48. h5 b4 49. Qd8+ Kg7 50. Qc7+ Kf6 51. Qb8 Qd3+ 52. Kh4 Kg7 53. Qb7+ Kf6 54. Qb8 Kg7 55. Qxb4 Qe4 56. Kg3 Qd3+ 57. f3 Qe3 58. Qb1 Kf6 59. Qg6+ Ke7 60. Qg7+ Ke8 61. Qg8+ Ke7 62. Qg7+ Ke8 63. Qe5 Qg1+ 64. Kh3 Qh1+ 65. Kg3 Qg1+ 66. Kf4 Qh2+ 67. Ke3 Qg1+ 68. Kd2 Qf2+ 69. Kc3 Qxf3+ 70. Kb4 Qxg4 71. Ka5 Qf5 72. Qc7 Qxh5 73. Qxc6+ Ke7 74. Qd6+ Kf6 75. c6 {1-0 (75) Ding,L (2755)-Shankland,S (2661) Tsaghkadzor 2015 CBM 166 [Mokal, P]}) 13. g3 Ba6 14. Re1 (14. Bxa6 Rxa6 15. Qe2 Rfa8 16. b5 cxb5 17. Nxd5 exd5 18. Qxe7 Rc8 (18... R6a7 19. Rfb1 bxc5 20. Rxb5 cxd4 21. Nxd4 Nf6 22. Qxc7 Rxc7 23. a4 Rc4 24. Nb3 h6 25. Nxa5 Rd4 26. f5 Kh7 27. f3 Ne8 28. Nc6 Rdxa4 29. Rxa4 Rxa4 30. Rxd5 Nf6 $14 {Bacrot,E (2694)-Istratescu,A (2619) Saint Quentin 2015/ White has some practical winning chances, but Black held the endgame with patient defence.}) 19. Rab1 (19. c6 Nf6 20. Qxc7 Rxc7 21. Rfb1 Ne4 22. Rxb5 Nc3 23. Rb2 {Maksimenko,A (2492)-Salvetti,A (2239) Lugano 2015} Rxc6 $11) (19. Rfb1 bxc5 20. Rxb5 Re6 21. Qg5 Rb6 22. a4 Rxb5 23. axb5 Nf6 24. Qf5 Ra8 25. Qb1 Qb6 26. dxc5 Qxc5 27. Qb2 Qb6 28. Nd4 Rc8 29. Ra2 Rc4 30. Nc6 a4 31. Ne5 Re4 32. Kg2 Qc5 33. Qb1 Rb4 34. Qf5 Qe7 35. Nc6 Qe4+ 36. Qxe4 Rxe4 37. b6 Nd7 38. b7 f6 39. b8=Q+ Nxb8 40. Nxb8 Rb4 41. Nd7 Rb5 42. Rxa4 Kf7 43. Ra6 {1-0 (43) Aronian, L (2802)-Giri,A (2714) Porto Carras 2011 CBM 146 [Krasenkow,M]}) 19... bxc5 20. Rxb5 Re6 21. Qg5 h6 22. Qxd5 Rd6 $132 {Ivanchuk,V (2731)-Kramnik,V (2784) WCup Tromsoe 2013}) (14. Qc2 Bxd3 15. Qxd3 Rfb8 16. Rfc1 Qb7 17. Kg2 g6 18. Qc2 b5 19. Rcb1 axb4 20. axb4 Rxa1 21. Rxa1 Ra8 22. Qb2 Ra6 23. Rxa6 Qxa6 24. Ne5 Nb8 25. g4 Bf6 26. Kg3 Bg7 27. g5 h6 28. gxh6 Bxh6 29. Qa2 Qxa2 30. Nxa2 Bf8 31. Nc1 Kg7 32. Nb3 f6 33. Nd3 Be7 34. Na5 Kf7 35. h4 Kg7 36. Nb7 Kh6 37. Nd6 Nd7 38. Kh3 Nb8 39. Nc8 Bd8 40. Nd6 Be7 41. Nc8 Bd8 42. f5 e5 43. dxe5 fxe5 44. Nxe5 Bf6 45. Ng4+ Kg7 46. fxg6 Kxg6 47. h5+ Kg7 48. h6+ Kg6 49. Nxf6 Kxf6 50. Ne7 d4 51. Kg3 {1-0 (51) Bareev,E (2702)-Vaganian,R (2623) New Delhi/Teheran 2000 CBM 081 [Dautov,R]}) 14... Bf6 15. Kg2 (15. Bc2 Bc4 16. Qd2 Ra7 17. Ne5 axb4 18. axb4 bxc5 19. bxc5 Nxe5 20. fxe5 Be7 21. Rab1 Rfa8 22. Rb4 Bd8 23. Ne4 Qe7 24. Nc3 Ra3 25. Reb1 g6 26. Ne4 dxe4 27. Rxc4 e3 28. fxe3 Qg5 29. Bd3 h5 30. Rcb4 h4 31. Kg2 Kg7 32. Rb7 Ra2 33. R1b2 Ba5 34. Qf2 Rxb2 35. Rxb2 Ra7 36. Qf4 Bd8 37. Be4 h3+ 38. Kxh3 Qh5+ 39. Kg2 Qd1 40. Rf2 {1-0 (40) Nakamura,H (2729)-Nielsen,P (2700) Amsterdam 2010 CBM 138 [Krasenkow,M]}) 15... Rfb8 $5 ( 15... Bxd3 16. Qxd3 Rfb8 17. h4 Qa7 18. Ne2 g6 19. Rab1 axb4 20. axb4 Qa2 21. Rec1 bxc5 22. bxc5 h5 23. Ne5 Nxe5 24. fxe5 Bg7 25. Rb6 $16 {Anand,V (2797) -Nakamura,H (2776) Zuerich 2015 This was a big win for White, which negatively influenced the reputation of 7...Nh5. Possibly undeservedly, as the notes by Krasenkow in CBM 165 indicate.} Rc8 26. Nc3 Qa7 27. Rcb1 Qd7 28. R1b4 Bh6 29. Na4 Qd8 30. Ra6 Kg7 31. Rb7 Rxa6 32. Qxa6 g5 33. Qe2 g4 34. Qa6 Qg8 35. Nb6 Rf8 36. Nd7 Qh7 37. Nxf8 Qe4+ 38. Kh2 Kxf8 39. Rb8+ Kg7 40. Qc8 Kg6 41. Qh8 { 1-0 (41) Anand,V (2797)-Nakamura,H (2776) Zuerich 2015 CBM 165 [Krasenkow,M]}) 16. Bxa6 Rxa6 17. Qd3 Ra7 $1 18. Rab1 axb4 19. axb4 Rba8 20. Rb3 Rb7 21. Reb1 h6 $132 {/+/=, Sasikiran,K (2642)-Riazantsev,A (2671) Montpellier 2015}) ({ Another big point for White was} 7... c6 8. Bd3 (8. b4 b6 9. h3 a5 10. a3 Bb7 ( 10... h6 11. Bd3 (11. Qc1 Bb7 12. Bd3 Qc8 13. O-O Ba6 14. Bxa6 Rxa6 15. Qc2 Qb7 16. Rab1 axb4 17. axb4 Ra3 18. Rfc1 bxc5 19. bxc5 Qa6 20. Ne1 Ra8 21. Qb2 Qc8 22. Qb7 Qxb7 23. Rxb7 Bd8 24. Bc7 Bxc7 25. Rxc7 R8a6 26. Nd3 Rb3 27. Ne5 Nxe5 28. dxe5 Raa3 29. Ne2 Ne4 30. Rxc6 Rb2 31. Rc8+ Kh7 32. Re1 Raa2 33. Kf1 Rc2 34. c6 Nc5 35. c7 Nd3 36. Rd1 Rxe2 37. Rh8+ Kxh8 38. c8=Q+ Kh7 39. Rxd3 Rxf2+ 40. Ke1 Rxg2 41. Kf1 Rgc2 {0-1 (41) Bacrot,E (2749)-Aronian,L (2801) Warsaw 2013 CBM 158 [Krasenkow,M]}) 11... Ba6 12. O-O Bxd3 13. Qxd3 Qc8 14. Rfc1 Qb7 15. Rab1 axb4 16. axb4 Rfc8 17. Nd2 (17. Ne1 Bd8 18. Qd1 Bc7 19. Nd3 Bxf4 20. exf4 Ne4 21. Ne2 Ra2 22. Rc2 Rca8 23. f3 Rxc2 24. Qxc2 Nef6 25. b5 Rc8 26. Qa4 Qc7 27. bxc6 Qxc6 28. Qxc6 Rxc6 29. Rc1 Rc7 30. Nc3 bxc5 31. dxc5 Ne8 32. Nb5 Rc8 33. Kf2 Nc7 34. Nxc7 Rxc7 35. Ke3 Kf8 36. Kd4 Nb8 37. Nb4 Rb7 38. Kc3 Ke7 39. Ra1 Kd7 40. Nd3 f6 41. Ra8 Kc6 42. h4 Kb5 43. Ra1 Nc6 44. Rb1+ Ka6 45. Re1 Re7 46. Ra1+ Kb7 47. Nb4 g5 48. fxg5 fxg5 49. h5 Rf7 50. Ra6 Nxb4 51. Rb6+ Kc8 52. Rxb4 Rf4 53. Rxf4 gxf4 54. Kd4 Kd7 55. Ke5 Kc6 56. Kxf4 Kxc5 57. g4 Kd6 58. Ke3 e5 59. g5 Ke7 60. g6 Kf6 61. Kd3 e4+ 62. fxe4 dxe4+ 63. Kxe4 Kg7 64. Kf5 Kg8 65. Kf6 Kf8 {1/2-1/2 (65) Giri,A (2793)-Aronian,L (2786) Moscow 2016 CBM 172 [Sagar Shah]}) 17... Bd8 18. Nb3 Bc7 19. Bxc7 Qxc7 20. Ra1 Qb7 21. b5 Rxa1 22. Rxa1 bxc5 23. Na5 Qa8 24. Nb3 Qb7 25. Na5 Qa8 26. Nb3 Qb8 27. dxc5 cxb5 28. Qd4 b4 29. Na4 Qb5 30. Qb2 Ne4 31. f3 Nexc5 32. Naxc5 Nxc5 33. Rc1 Rc7 34. Qe5 Qb6 35. f4 Na6 36. Ra1 Rc3 37. Nd4 Nc7 38. Rb1 f6 39. Qh5 Rxe3 {0-1 (39) Aronian,L (2792)-Nakamura,H (2787) Zuerich 2016 CBM 171 [Pavlovic,M]}) 11. Bd3 Qc8 12. O-O Ba6 13. Rb1 Bxd3 14. Qxd3 Qb7 15. Qc2 axb4 16. axb4 h6 17. Rfc1 Rfc8 18. Ne1 Ra3 19. Nd3 Qa8 20. Qb2 Ne4 21. Ra1 Rxa1 22. Rxa1 Qb7 23. Nd1 Ra8 24. Ra2 Rxa2 25. Qxa2 bxc5 26. bxc5 Qb5 27. Qc2 Bd8 28. f3 Nef6 29. N1b2 Ba5 30. Qa4 Qxa4 31. Nxa4 Kf8 32. Nc1 Ne8 33. Nb3 Bc7 34. Bxc7 Nxc7 35. Na5 Nb8 36. Nb2 Ke7 37. Nd3 f6 38. Kf2 Kd7 39. e4 Nb5 40. Ke3 Na6 41. e5 f5 42. g4 fxg4 43. hxg4 g5 44. Nb3 Na3 45. f4 Nc4+ 46. Kf3 gxf4 47. Kxf4 Ke7 48. Kg3 Kf7 49. Kh4 Kg6 50. Nf4+ Kf7 51. Nd3 Kg6 52. Nf4+ Kf7 53. Kh5 Ne3 54. Nd3 Nb8 55. Na5 Nc2 56. Nb3 Ne3 57. Nb4 Ke7 58. Na5 Kd7 59. Nd3 Ke7 60. Nb4 Kd7 61. Nd3 Ke7 62. Nf2 {1-0 (62) Grischuk,A (2760)-Wang,H (2724) Khanty-Mansiysk 2010 CBM 139 [Krasenkow,M]}) 8... b6 (8... Nh5 $5 {can still transpose into the above line.} ) 9. b4 a5 10. a3 Ba6 11. Bxa6 (11. O-O Qc8 12. h3 Qb7 13. Qc2 Bxd3 14. Qxd3 Ra7 15. Rfc1 axb4 16. axb4 Rfa8 17. Rab1 b5 18. Qc2 Bd8 19. Qd1 Bc7 20. Bxc7 Qxc7 21. Ra1 Ne4 22. Nxe4 dxe4 23. Rxa7 Qxa7 24. Nd2 Nf6 25. Nb3 Nd5 26. Ra1 Qb8 27. Na5 Ra6 28. Qb1 f5 29. Ra3 Qa8 30. Qb2 g5 31. Qb1 Kg7 32. Qb2 h5 33. Qb1 Kh6 34. Qe1 h4 35. Ra2 Qb8 36. Ra3 Qc7 37. Kh1 Ra8 38. Ra1 Ra6 39. Qb1 Qa7 40. Qe1 Qg7 41. Nb3 Rxa1 42. Qxa1 Nxb4 43. Qa8 Qf6 44. Kg1 f4 45. Nd2 fxe3 46. fxe3 Kg7 47. Nxe4 Qf8 48. Qxf8+ Kxf8 49. Kf2 Nd5 50. Ke2 b4 51. Kd3 b3 52. Nxg5 Nxe3 53. Kc3 Ke7 54. Nf3 Nxg2 55. Ne5 Kf6 56. Kxb3 Nf4 57. Nxc6 Nxh3 58. Ne5 Nf4 59. c6 Nd5 60. Kc4 Kf5 61. Kc5 h3 62. Nf3 Kf4 63. Nh2 Kg3 64. Nf1+ Kf2 65. Nh2 Kg2 66. Ng4 Kg3 67. Ne3 Nxe3 68. c7 h2 69. c8=Q h1=Q 70. Qxe6 Qc1+ 71. Kd6 Qa3+ 72. Kd7 Qa7+ 73. Kc6 Qa6+ 74. Kd7 Qb7+ 75. Kd6 Kf4 76. Qh6+ Kf3 77. Qh1+ Ng2 78. Qh5+ Ke4 79. Qe5+ Kd3 80. Qf5+ Kd2 81. Qa5+ Ke2 82. Qh5+ Kf2 83. Qf5+ Kg1 84. d5 Ne3 85. Qf3 Qb6+ 86. Ke7 Qc5+ 87. Ke6 Nc4 88. Qg3+ Kf1 89. Qf3+ Ke1 90. Qg3+ Kd2 91. d6 Nb6 92. Qf4+ Kd1 93. Qf3+ Kc1 94. Qf4+ {1/2-1/2 (94) Galego,L (2429)-Vaganian,R (2641) Ohrid 2001 CBM 084 [Dautov,R]}) 11... Rxa6 12. b5 $1 cxb5 13. c6 Qc8 14. c7 b4 15. Nb5 a4 16. Rc1 Ne4 17. Ng5 Ndf6 18. Nxe4 Nxe4 19. f3 Ra5 20. fxe4 Rxb5 21. Qxa4 Ra5 22. Qc6 bxa3 23. exd5 Rxd5 24. Qxb6 $16 {Anand,V (2792)-Carlsen,M (2863) WCh Sochi 2014/ In his notes in CBM 164 Krasenkow explains the details of this complex line.} Qd7 25. O-O Rc8 26. Rc6 g5 27. Bg3 Bb4 28. Ra1 Ba5 29. Qa6 Bxc7 30. Qc4 e5 31. Bxe5 Rxe5 32. dxe5 Qe7 33. e6 Kf8 34. Rc1 {1-0 (34) Anand,V (2792)-Carlsen,M (2863) Sochi 2014 CBM 164 [Krasenkow,M]}) 8. h4 $5 {[%mdl 4] Exploring less charted territory.} ( 8. Rc1 {The text move scores well, but we'll check the alternatives as well:} Nxc3 9. Rxc3 b6 10. c6 {The principled push. In the first game White bailed out with} (10. b4 a5 11. a3 axb4 12. axb4 bxc5 13. bxc5 Nf6 14. Nd2 Nd7 { [%CAl Ye6e5]} 15. Nf3 Nf6 16. Nd2 Nd7 17. Nf3 {1/2-1/2, Anand,V (2793)-Caruana, F (2829) London 2014}) 10... Nf6 11. a3 a5 12. Bd3 (12. Rc1 Ne4 13. Qc2 Ba6 14. Bxa6 Rxa6 15. O-O Bd6 16. Ne5 Bxe5 17. Bxe5 Ra8 18. a4 Nd6 19. h3 Rc8 20. b3 Nf5 21. Bf4 Qe7 22. Qd3 Rfd8 23. Rfd1 Re8 24. Rc3 Rcd8 25. Qc2 f6 26. e4 dxe4 27. Qxe4 Rd5 28. Rcd3 Nh4 29. Bh2 Ng6 $11 {Salzmann,S (2103)-Sacerdotali,S (2056) email 2014 Although White has more space, Black's set-up is very solid.} ) (12. Rc2 Ba6 $6 (12... Ne4 $1 {transposes to the game, as White hardly has anything better than} 13. Bd3 {-12.Bd3}) 13. Bxa6 Rxa6 14. Ne5 a4 15. g4 $1 Ne4 16. Nd7 Re8 17. Qd3 Ra5 18. O-O Nd6 19. Bxd6 Bxd6 20. f4 $36 {()} Re7 21. f5 e5 22. f6 Rxd7 23. Qf5 $1 $18 {Vitiugov,N (2735)-Raznikov,D (2494) Caleta 2015}) 12... Ne4 13. Rc2 {Stohl,I: '-12.Bd3'} f6 (13... Ba6 14. Bxa6 Rxa6 15. Ne5 Bd6 16. Nd7 Bxf4 (16... Re8 $5) 17. Nxf8 Bxe3 18. Nd7 Bg5 19. Qd3 Ra8 20. a4 Nf6 21. h4 Bh6 22. Nxf6+ Qxf6 23. h5 Bg5 24. O-O Qf4 25. Rd1 Bf6 26. g3 Qg4 27. Qe2 Qh3 28. Rc3 Be7 29. g4 Qh4 30. f4 $14 {/=, Giri,A (2784)-Caruana,F (2820) Wijk aan Zee 2015/ White's material advantage is minimal amd it's difficult to effectively open the position, see the notes by Sumets in CBM 165. In the end Caruana held a draw, but after almost 100 moves! It's not surprising he intends to deviate earlier.} Bd6 31. Rf1 Qf6 32. Qf2 Rb8 33. Rb3 g6 34. hxg6 hxg6 35. Kg2 Kf8 36. Rh3 Ke7 37. b3 Rh8 38. g5 Qg7 39. Rxh8 Qxh8 40. Rh1 Qg8 41. Rh3 Qg7 42. Kf3 Qg8 43. Kg2 Kd8 44. Qh4 Qe8 45. Rc3 Kc8 46. Kf3 Kb8 47. Qh7 Qf8 48. Kg4 Ka7 49. Rf3 Qe8 50. Qg7 Qxc6 51. Qxf7 Qc1 52. Qxe6 Qg1+ 53. Rg3 Qxd4 54. Qe3 Qh8 55. Rh3 Qc8+ 56. Kh4 Qf8 57. Rf3 Qh8+ 58. Kg3 Qh5 59. Kg2 Qg4+ 60. Kf1 Bc5 61. Qd3 Qg1+ 62. Ke2 Bb4 63. Rf1 Qg4+ 64. Qf3 Qf5 65. Rd1 c6 66. Rh1 Bc5 67. Kf1 Bd6 68. Rh7+ Kb8 69. Qe3 Qxf4+ 70. Qxf4 Bxf4 71. Rg7 Bxg5 72. Rxg6 Be7 73. Rxc6 Bc5 74. Ke2 Kb7 75. Rg6 Kc7 76. Kf3 Kd7 77. Kf4 Bd4 78. Kf5 Ke7 79. Rg4 Bc3 80. Rg3 Bb2 81. Rg2 Bc3 82. Rc2 Ba1 83. Rc6 Bd4 84. Rh6 Kd7 85. Re6 Kc7 86. Kf4 Kd7 87. Rh6 Kc7 88. Kf3 Kd7 89. Ke2 Bc5 90. Kf3 Bd4 91. Rh4 Bc5 92. Rg4 Kd6 93. Rg6+ Kd7 94. Rh6 Bd4 95. Kf4 Kc7 96. Kf5 Kd7 97. Rh4 Bc3 { 1/2-1/2 (97) Giri,A (2784)-Caruana,F (2820) Wijk aan Zee 2015 CBM 165 [Sumets, A]}) 14. Qe2 {Aronian naturally prevents Ba6, so now Black's hope to develop his Bc8 lies with the e5 push.} Bd6 15. O-O g5 $5 $146 {[%mdl 8] An double-edged push. Although Black will later pay for the weakening of his >>, we can't judge it solely by the result, as his play could have been improved upon (also Fabiano repeated 7...Ne4 in Round 6 against Grischuk).} ({A less committal alternative is} 15... Qe7 {[%CAl Ye6e5]} 16. Bxd6 (16. Nd2 Nxd2 17. Bxd6 (17. Rxd2 e5 $132) 17... Qxd6 18. Rxd2 $5 (18. Qxd2 Ba6 $11 (18... e5 $5 $11)) 18... Qxc6 19. Rc2 Qd7 20. Rfc1 Ra7 21. Rc6 $44 {, but is this more than just compensation?}) ({It's not so easy to find an alternative to the simple swap on d6, perhaps} 16. h3 $5 e5 17. Bh2 $13 {is worth considering, Black's centre may come under pressure.}) 16... Nxd6 17. e4 dxe4 18. Bxe4 Nxe4 ({ I don't like this swap, a more natural way seems to be} 18... Ba6 19. Bd3 Bxd3 20. Qxd3 Qf7 $14 {/<=>}) 19. Qxe4 Rd8 20. Re1 Qf7 21. b4 axb4 22. axb4 Ra4 23. Rb2 Rd5 24. Qc2 Ra3 25. Ra2 Rxa2 26. Qxa2 Rd6 27. Qa8 Qe8 28. b5 $36 { Petrosyan,T (2441)-Johannessen,L (2517) Sitges 2015/ This game was played roughly one month earlier, with some help from the opponent White managed to realise his plan in an ideal form - the Bc8 remains hemmed in.}) ({This is also why Black spurns} 15... Bxf4 $2 16. exf4 $16 {[%csl Ge5][%CAl Ge1e6] - a major positional concession, which greatly increases White's control of the centre in general, particularly the vital e5-square.}) 16. Bxd6 (16. Bg3 e5 $5 (16... Nxg3 17. fxg3 $5 f5 18. g4 Qf6 $132) 17. Bxe4 dxe4 18. Qc4+ Rf7 $8 19. dxe5 fxe5 20. Qxe4 (20. Nd2 $5 Ba6 21. Qxe4 $44) 20... Bf5 21. Qc4 Bxc2 22. Qxc2 Qf6 $13) 16... Nxd6 17. Re1 $5 (17. e4 dxe4 18. Bxe4 Ba6 19. Bd3 Bxd3 20. Qxd3 g4 21. Ne1 (21. Nh4 f5 22. g3 Ne4 $13 {/=/+}) 21... Nf5 22. Qe4 Kh8 $132) (17. Nd2 e5 18. e4 f5 $132 {Aronian makes a useful preparatory move before the central confrontation.}) 17... a4 {Strategically useful in the long run, as it stops the b4-b5 squeeze. However, with a storm brewing in the centre this is hardly a critical consideration, moreover the follow-up in move 21 will cost Black the game.} ({Possible improvements are} 17... Re8 18. Nd2 e5 $132) ({ , as well as} 17... g4 $5 18. Nd2 e5) 18. Nd2 {[%CAl Ye3e4,Yf2f4]} e5 {White is ready to expand in the centre, so Black should act first.} (18... f5 $2 19. f4 $16 {[%csl Rc8] is too static.}) 19. e4 f5 $5 {Increasing the tension.} ( 19... exd4 {Aronian intended} 20. Rcc1 $5 {and this deserves attention. A sample line is} (20. exd5 Re8 21. Qd1 Bf5 (21... Rxe1+ 22. Qxe1 Ra5 23. Nc4 Rxd5 24. Nxd6 Rxd6 25. f4 $1 gxf4 26. Re2 $44) 22. Rxe8+ Qxe8 23. Nf3 Qf7 24. Bxf5 Nxf5 25. h4 $1 h6 (25... Qxd5 26. hxg5 fxg5 27. Nxg5 Ng7 $5 $13) 26. g4 Nd6 27. Re2 (27. Qxd4 Re8 $44) 27... Qxd5 28. Qd3 Re8 $5 {and Black should hold - for example} 29. Qg6+ Kf8 30. Qxf6+ Nf7 31. Rxe8+ Kxe8 32. hxg5 hxg5 33. Nxd4 Ne5 34. Qe6+ Qxe6 35. Nxe6 Ke7 36. Nxg5 Nxg4 37. Ne4 Ne5 38. Nc3 Nc4 39. Nxa4 Kd6 40. f4 Kxc6 $11 {[%CAl Rb6b5]}) (20. e5 fxe5 21. Qxe5 Qf6 22. Nf3 Qxe5 23. Rxe5 Bf5 $132) 20... Re8 21. Qf3 Qe7 22. h3 Kg7 23. exd5 Qxe1+ 24. Rxe1 Rxe1+ 25. Kh2 $32 {/+/=}) 20. f3 {As the struggle heats up, Aronian holds on to the centre.} (20. exd5 $6 e4 21. Bc4 Qf6 $36) (20. dxe5 Nxe4 (20... fxe4 21. exd6 exd3 22. Qxd3 Qxd6 23. Qe3 h6 24. Nf3 $36) 21. Nb1 (21. f3 Nc5 $132) 21... Be6 $13) 20... dxe4 $2 {Releasing the tension is a concession, in such a volatile situation this has dire consequences.} (20... Re8 $142 $1 21. Qf2 Ra5 (21... dxe4 22. fxe4 f4 23. Nf3 (23. dxe5 Nf7 24. Bc4 Be6 $11) 23... exd4 24. e5 Nf5 25. Rd2 $13 {/+/=}) 22. exf5 Bxf5 (22... exd4 23. g4 $16 {[%csl Rc8]}) 23. Bxf5 Nxf5 24. dxe5 d4 25. f4 gxf4 (25... Ne3 26. Ne4 $1 $14) 26. Nc4 Rc5 27. Qxf4 Qh4 {Black swaps queens and he should survive the resulting endgame after} 28. Qxh4 Nxh4 29. Re4 Ng6 30. Rxd4 Rxc6) 21. fxe4 Ra5 $6 {This is not ideal, but White already has an advantage:} (21... Re8 22. exf5 exd4 23. Qf2 $36) ({More testing was} 21... exd4 22. e5 Re8 23. Qh5 Nf7 24. Nf3 g4 {, when White has a choice:} {Perhaps even more promising is} 25. Bc4 (25. Nh4 Qg5 26. Qxg5+ Nxg5 27. Nxf5 (27. Rc4 $5) 27... Bxf5 28. Bxf5 Ra5 29. Rce2 g3 30. hxg3 Rd5 $14) 25... Be6 26. Bxe6 Rxe6 27. Qxf5 Rg6 28. e6 $1 (28. Nd2 Qh4 $132) 28... Nh6 29. Qe4 gxf3 30. e7 Qe8 31. Qxf3 $44 {[%csl Ge7] /+/- The powerful o^e7 paralyzes Black and even the engines are not too optimistic about his defensive prospects, with the evaluation gradually growing in White's favour. However, writing this sitting by the monitor and deciding for the piece sacrifice over the board are two very different things!}) 22. exf5 Nxf5 (22... exd4 23. g4 $16) 23. Bc4+ $1 (23. dxe5 $6 Nd4 24. Qh5 Bf5 {perhaps keeps an edge, but is definitely far less convincing.} 25. Rc3) 23... Kg7 24. d5 { [%csl Ra5,Re5,Rg7][%mdl 128] Shuts off the hapless rook and proceeds with his attack.} Re8 (24... Nd6 25. Qxe5+ Kh6 (25... Qf6 26. Qxf6+ Rxf6 27. Ne4 Nxe4 28. Rxe4 Bf5 29. Re7+ Kf8 30. Rce2 $16) 26. h4 $16 {is maybe more resilient, but still dreary enough.}) 25. Ne4 $1 $18 {[%mdl 512] The positionally desirable moves very often work even tactically! This sacrifice is fully correct and decides the game.} Nd4 (25... Nd6 26. Rf1 Rf8 (26... Nxc4 27. Qh5 $18) 27. Nxd6 Rxf1+ (27... Qxd6 28. Rxf8 Kxf8 29. Qf3+ Kg7 30. Rf2 $18) 28. Qxf1 cxd6 (28... Qxd6 29. Rf2 Qe7 30. d6 Qxd6 31. Rf7+ Kg6 32. Rf8 $18) 29. Rf2 $18 (29. Bd3 $5 {/\} Rxd5 30. Rf2 $18 {[%CAl Rf2f7,Rd3c4]})) 26. Qh5 Nxc2 ( 26... Bf5 27. Rf2 Bg6 28. Qg4 $1 $40 (28. Qxg5 $2 Qxg5 29. Nxg5 Rc5 $132) 28... h6 (28... h5 29. Qg3 Bxe4 30. Rxe4 $18) 29. Nf6 $18 {is simply hopeless, therefore Caruana accepts the challenge and takes the rook.}) 27. Nxg5 Bf5 ( 27... Nxe1 28. Qxh7+ Kf6 29. Ne4#) (27... Rh8 28. Rf1 $18) 28. Rf1 $1 {Caruana possibly overlooked/underestimated this quiet move.} (28. Qf7+ $2 Kh6 29. Qxf5 Qxg5 30. Qxc2 Rf8 $13) 28... Qf6 (28... Bg6 29. Rf7+ $1 Bxf7 (29... Kh8 30. Rxh7+ $18) (29... Kg8 30. Qh6 $18 {[%CAl Rh6g7]}) 30. Qxh7+ Kf6 31. Ne4+ Ke7 32. d6+ $18) 29. Ne6+ ({White has already more than one way, even more incisive was} 29. Rxf5 $1 Qxf5 (29... Qg6 30. Rf7+ Kg8 31. Qh3 $18 {[%CAl Rd5d6,Rc4d3]}) 30. Ne6+ Rxe6 (30... Qxe6 31. dxe6 $18 {[%CAl Rh5f7,Rf7e8]}) ( 30... Kf6 31. Qxe8 e4 32. Qd8+ Kg6 (32... Ke5 33. Qxc7+ Kf6 34. Qg7#) 33. Qg8+ Kh6 34. Qg7+ Kh5 35. Be2+ $18) 31. Qxf5 $18 {[%csl Rc2,Re6]}) 29... Rxe6 30. Rxf5 Qg6 31. dxe6 ({Levon goes for the won endgame, but there was the even more powerful} 31. Rg5 $1 Re7 32. Bd3 $18) 31... Qxh5 32. Rxh5 Nd4 33. e7 Ra8 34. Rxe5 Re8 35. Re4 Nf5 (35... Nxc6 36. Bb5 Rxe7 37. Bxc6) 36. Be6 $1 Nd6 ( 36... Nxe7 37. Bd7 $18) 37. Bd7 Nxe4 38. Bxe8 Kf6 39. Bg6 {1-0 (39) Aronian,L (2765)-Caruana,F (2808) Saint Louis 2015 CBM 168 [Stohl,I] The final touch, winning a piece.}) (8. Nb5 $2 c6 9. Bc7 Qe8 10. Nd6 Nxd6 11. cxd6 Bd8 {[%csl Rd6] doesn't make much sense - the advanced pawn will fall in due course.}) (8. a3 $146 {is a profound novelty, but the point remains unclear:} Nxc3 9. bxc3 c6 $5 {[%CAl Yb7b6]} (9... b6 10. c6 Nb8 11. Qa4 (11. Bb5 a6 12. Qa4 Bd6 13. Bg3 Ra7 $1 {[%CAl Ra6b5]}) 11... a6 12. c4 Ra7 {[%CAl Yb8c6] liquidates the advanced Pc6, but White has fair compensation after} 13. Bd3 Nxc6 14. cxd5 Qxd5 15. O-O $44) 10. Qa4 $8 g5 11. Bg3 f5 12. h3 f4 13. Bh2 e5 14. Be2 e4 15. Nd2 Nxc5 $1 16. dxc5 Bxc5 17. O-O {Here Grischuk was allegedly still following his preparation, this position is critical:} (17. exf4 gxf4 18. Nxe4 dxe4 19. Qxe4 Qg5 $5 $13 {/=/+} (19... Bf5 20. Qc4+ Qd5 21. Qxd5+ cxd5 22. Bxf4 Be4 23. Be3 $11)) 17... b5 $2 (17... fxe3 $142 18. Nxe4 dxe4 19. fxe3 (19. Qb3+ Kg7 20. Be5+ Kg6 21. fxe3 Qd5 $17) 19... Be6 20. Rxf8+ Qxf8 21. Rf1 Qe7 (21... Qe8 $5) 22. Qxe4 Re8 $36 {Black's activity fully compensates for the weakened g5.}) 18. Qb3 Qe7 19. Kh1 Be6 20. a4 d4 21. Qd1 d3 22. Bg4 Bd5 23. axb5 cxb5 24. Nb3 fxe3 25. Nxc5 Qxc5 26. fxe3 Qxe3 27. Re1 Qf2 28. Bg1 $40 {Grischuk,A (2771)-Caruana, F (2808) Saint Louis 2015/ Black's pawns are stopped and White's extra piece will tell, as the Kg8 is terminally vulnerable.}) (8. Qc2 f5 (8... g5 $143 9. Bg3 f5 10. Nxe4 $1 dxe4 11. Nd2 f4 12. Bc4 fxg3 13. hxg3 Rf6 14. Qxe4 Nf8 15. Nf3 Rg6 16. Ne5 Rg7 17. O-O-O Qe8 18. Rh6 Ng6 19. Rdh1 $40 {Steinitz,W-Lasker, E St Petersburg 1895/96 (4.2) 1-0 Ehlvest,J (2627)-Saidy,A (2376) Los Angeles 2000/ For a similar piece sacrifice see already}) 9. Bd3 (9. h4 c6 10. O-O-O ({ Very optimistic, solid is} 10. a3 $13) 10... Nxc3 11. Qxc3 b6 12. Ng5 (12. h5 $142 $5 bxc5 13. h6) 12... Rf6 13. b4 $2 a5 14. a3 axb4 15. axb4 bxc5 16. bxc5 Ra5 17. Kd2 e5 18. dxe5 Rg6 19. Bd3 Ra2+ 20. Ke1 Nxc5 $40 {[%csl Re1] Markos,J (2590)-Cvek,R (2520) Slovakia 2014}) (9. Ne5 Bf6 10. Nxd7 Bxd7 11. f3 Ng5 12. Bxg5 Bxg5 13. f4 Bf6 14. b4 g5 15. g3 Kh8 16. Be2 Rg8 17. O-O-O b6 18. Ba6 Rb8 19. Rhg1 Qe7 20. a3 Qg7 21. Ne2 c6 22. Qc3 gxf4 23. exf4 Bc8 $15 {Fressinet,L (2714)-Ponomariov,R (2734) Istanbul olm 2012}) (9. h3 c6 10. Be2 b6 11. cxb6 axb6 12. O-O Ba6 13. Rfc1 Nxc3 14. Bxa6 Rxa6 15. Qxc3 c5 16. a4 Qa8 17. b3 Rc8 18. Qb2 Qb7 19. Bg5 Bd6 20. Bf4 Be7 21. Bg5 Bd6 22. Bf4 Be7 {½, Khismatullin, D (2640)-Matlakov,M (2653) Loo 2013}) 9... c6 (9... g5 $5 10. Bg3 c6 11. Ne2 b6 12. b4 a5 13. b5 Bb7 14. bxc6 Bxc6 15. cxb6 Bb4+ 16. Kf1 Qxb6 17. Bxe4 dxe4 18. Nxg5 Rac8 19. Kg1 Bb5 20. Qd1 Bd3 21. Nf4 Bc3 22. Rc1 Bb2 23. Nxd3 Bxc1 24. Nc5 Bxe3 25. fxe3 Nxc5 26. dxc5 Rfd8 27. Qa1 Qxc5 {1/2-1/2, Lehnhoff,H (2174) -Harding,A (2143) email 2013} 28. h4 Qxe3+ 29. Kh2 Qc3 $11 (29... Rc3 $5)) 10. Ne5 Bf6 11. Nxd7 Bxd7 12. f3 Ng5 13. Bxg5 Bxg5 14. f4 Be7 15. a3 b6 16. b4 g5 17. g3 Kh8 $11 {/<=>, Topalov,V (2752)-Giri,A (2711) Istanbul olm 2012 The position is very similar to Fressinet-Ponomariov above. Krasenkow's notes in CBM 151 show Black has nothing to complain about.}) ({Perhaps the simplest and risk-free solution is} 8. Nxe4 dxe4 9. Ne5 (9. Nd2 $6 e5 10. Bxe5 Nxe5 11. dxe5 Qd5 12. Qc2 Qxe5 13. Rc1 Bf5 14. Be2 b6 15. Nb3 a5 $36 {Volodin,A (2506) -Ehlvest,J (2605) Tallinn rpd 2013}) 9... Nxe5 10. Bxe5 Bd7 11. Bc4 (11. Be2 Bc6 12. O-O Bf6 13. Bg3 Bh4 14. Be5 Bf6 15. b4 Bxe5 16. dxe5 a6 17. a4 Qg5 18. b5 axb5 19. axb5 Bd5 20. Qd4 f6 21. exf6 Qxf6 22. Qxf6 gxf6 $11 {Giri,A (2745) -Kasimdzhanov,R (2700) Tromso olm 2014}) 11... Bc6 (11... Bf6 12. Bg3 Bc6 13. O-O (13. Qe2 $142 {transposes to Eljanov's game below.}) 13... Bh4 (13... b5 $5 14. Bb3 a5 $11) 14. Qh5 Bxg3 15. fxg3 Bd5 16. Bxd5 Qxd5 17. Qxd5 exd5 18. g4 f6 19. b4 a6 20. a4 Kf7 21. Kf2 Ke6 22. Kg3 Rf7 $11 {Salem,A (2595)-Harika,D (2509) Abu Dhabi 2015}) 12. Qe2 Bf6 13. Bg3 {Stohl,I: '>=' Stohl,I: 'transposes to Eljanov's game below.'} Rc8 (13... Qd7 $142 14. Rc1 b5 15. cxb6 axb6 16. O-O $11 {/+/=}) 14. b4 Qd7 15. a4 Rfd8 16. O-O Bd5 17. Rfc1 c6 18. Bd6 Bxc4 19. Qxc4 Be7 {Eljanov,P (2718)-Andreikin,D (2718) Havana 2015} 20. Bg3 $14 {For more details see the notes by Eljanov in CBM 167.} (20. Be5 Qd5 21. Rab1 f6 22. Bg3 Qxc4 23. Rxc4 Kf7 24. Kf1 e5 25. dxe5 f5 26. Ke2 Ke6 27. f3 Rd3 28. fxe4 fxe4 29. Rxe4 Rcd8 30. b5 Rd2+ 31. Kf3 g5 32. bxc6 bxc6 33. Reb4 h5 34. R4b2 Kf5 35. e4+ Ke6 36. Rxd2 Rxd2 37. Rb7 g4+ 38. Ke3 Rxg2 39. Rc7 h4 40. Bf4 Bxc5+ 41. Kd3 Rf2 42. Rxc6+ Kd7 43. Rf6 Rf3+ 44. Kc4 Bg1 45. Rf7+ Ke6 46. Rf6+ Kd7 {1/2-1/2 (46) Eljanov,P (2718)-Andreikin,D (2718) Havana 2015 CBM 167 [Eljanov,P]})) (8. Bd3 f5 9. h3 (9. Ne5 Bf6 10. Nxd7 Bxd7 11. O-O g5 12. Bxe4 gxf4 13. Bd3 fxe3 14. fxe3 Kh8 15. Ne2 c6 16. Kh1 Qe7 17. Qb3 Rab8 18. Qa4 a6 19. Qa5 Bg5 20. Qc7 Rfc8 21. Qg3 Rg8 $11 {Amanov,M (2516)-Topalov,V (2752) Istanbul olm 2012}) (9. Bxe4 $6 fxe4 10. Ne5 Nxe5 11. Bxe5 b6 12. b4 a5 13. a3 bxc5 14. bxc5 {Esen,B (2587)-Ganguly,S (2629) Vlissingen 2012} Bf6 $1 $40 { [%CAl Rc8a6]}) 9... c6 10. O-O (10. Qa4 Bf6 11. Ne2 Nexc5 12. dxc5 e5 13. Nxe5 Nxe5 14. O-O-O Qe7 15. Qc2 a5 (15... b6 $5 $36) 16. Nd4 g6 17. Kb1 a4 18. Rc1 Bd7 19. g4 Nxd3 20. Qxd3 Qe4 $15 {Inarkiev,E (2672)-Kasimdzhanov,R (2706) Germany 2014}) 10... b6 11. cxb6 axb6 12. a4 Ba6 13. Rc1 Nxc3 14. Rxc3 c5 15. b3 Qc8 16. Ne5 Bf6 17. Nxd7 Qxd7 18. Bxa6 Rxa6 $11 {Gajewski,G (2653)-Swiercz, D (2622) Chorzow 2013}) 8... f5 9. Be2 {The position is equal.} c6 10. Qc2 {[#] } Qe8 $146 ({Predecessor:} 10... b6 11. cxb6 axb6 12. Nxe4 fxe4 13. Ng5 Bb4+ 14. Kf1 e5 15. dxe5 Nc5 16. a3 h6 {1-0 (47) Nagy,G (2478) -Firouzja,A (2728) Chess.com INT 2020}) 11. Ne5 Bf6 12. Nxd7 Bxd7 13. f3 Nxc3 14. Qxc3 Rf7 15. Bd6 Qd8 16. h5 b6 17. f4 Be8 18. g4 Rd7 19. g5 Be7 {[#]} ({Better is} 19... bxc5 20. Bxc5 (20. gxf6 Rxd6 21. fxg7 cxd4 $14) 20... Be7) 20. Bxe7 (20. Be5 $142 $1 ) 20... Rxe7 21. Ba6 Rb8 22. b4 Rc7 23. h6 g6 24. Kf2 b5 25. a4 Qe7 26. Qd3 Bd7 27. Rhc1 Qe8 28. Ra3 Kf8 29. Qc2 Qe7 30. Qe2 Be8 $2 {[#]} (30... Qe8 31. axb5 cxb5) 31. Rc2 Bd7 32. Qf1 Be8 33. Qc1 Qd7 34. Rac3 Qe7 ({Don't play} 34... bxa4 $6 35. Qa3 $16) 35. Qa3 Qd8 36. axb5 cxb5 37. c6 Rb6 {[%CAl Rc7c6]} 38. Bb7 Qb8 39. Qa5 Ke7 40. Rc5 Kf8 $2 {[%mdl 8192]} (40... Kd6 $16 {keeps fighting.} 41. Ra2 Bxc6 42. Bxc6 Rbxc6) 41. Rxb5 $18 Rcxb7 (41... Bxc6 $142 42. Rxb6 axb6 43. Qxb6 Qxb7 44. Qxb7 Rxb7) 42. cxb7 {Weighted Error Value: White=0.12/Black=0.32} 1-0