[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Wang, Hao"]
[Black "Saduakassova Dinara"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2713"]
[BlackElo "2479"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,53,30,34,25,8,9,9,5,21,12,0,54,31,32,39,55,30,21,23,31,27,112,117,530,539,542,531,547,548]} 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. d4 c5 8. Nf3 cxd4 9. Bg5 Qf5 10. cxd4 Bb4+ 11. Bd2 Qa5 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} 12. Bd3 Nc6 13. Rb1 Bxd2+ 14. Qxd2 {LiveBook: 14 Games} Rb8 {[#]} 15. Rb5 $146 ({Predecessor:} 15. Be4 Bd7 16. Ne5 Qxd2+ 17. Kxd2 Na5 18. Rb4 f6 19. Nxd7 Kxd7 {½-½ (77) Reinderman,D (2573)-Naiditsch,A (2687) Wijk aan Zee 2010}) 15... Qxd2+ 16. Kxd2 b6 17. d5 Nd8 18. Rhb1 Bd7 ({Black should play} 18... Ra8 $11) 19. Ra5 Rb7 20. Ra3 Ke7 21. Ng5 $36 {[%mdl 2048] Black is under pressure.} f6 22. Ne4 exd5 23. cxd5 Nf7 {[#]} (23... f5 $1 $11 {keeps the balance.} 24. Ng3 g6) 24. Re1 $1 $16 {Threatens to win with Nc5+.} Rc7 $2 {[%mdl 8192]} (24... Kf8 $16 {is tougher.} 25. Ba6 Rb8) 25. Ng5+ $1 $18 {White is clearly winning.} Ne5 26. f4 {[%cal Bf2f4,Bf4e5][%mdl 32]} fxg5 27. fxe5 {Precision: White = 67%, Black = 36%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Mareco, Sandro"]
[Black "Akshat Khamparia"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2635"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,69,24,39,36,44,24,14,13,12,18,11,13,44,45,71,75,72,75,108,105,141,120,151,116,112,141,193,146,177,186,230,227,333,330,335,324,289,309,297,300,1017,995,1015,1015,935,998,995,994,970,916,1075,1061]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. h3 Rb8 9. e4 e5 10. dxe5 {E63: King's Indian: Fianchetto: Panno Variation with 7...a6} (10. d5 Ne7 11. b4 c6 12. a4 cxd5 13. cxd5 Bd7 14. Bd2 Rc8 15. Re1 h6 16. Qb3 Ne8 17. b5 a5 18. b6 {0-1 (33) Iljin,A (2537)-Korobov,A (2708) Sochi 2015}) 10... dxe5 {LiveBook: 3 Games} 11. Be3 Be6 12. Qa4 $146 {White is slightly better.} ({Predecessor:} 12. b3 h6 13. Qc1 Kh7 14. Rd1 Qc8 15. Kh2 Rd8 16. Qb2 Rxd1 17. Rxd1 Qe8 {1-0 (49) Rasmussen,K (2447)-Arias,L (2406) Santiago de Cuba 2009}) 12... Re8 13. Rfd1 Qc8 14. Kh2 h6 15. c5 Nh5 16. Nd5 $36 {[%mdl 2048] White is pushing.} f5 17. exf5 gxf5 18. Nh4 e4 19. Rd2 Ne5 20. Qd1 Bf7 {White should prevent ...Nc4.} 21. Bf1 Nf6 22. Nf4 Nh7 (22... c6 $16) 23. Qc2 Bf6 24. Be2 Kh8 25. Bd4 Ng5 (25... Nf8 $142 26. Qc3 Kh7) 26. Rad1 Kh7 27. b4 Re7 28. Kg2 Bg7 29. Bc3 Be8 $2 {[#]} (29... Ngf3 30. Bxf3 Nxf3) 30. Rd8 $1 $18 {[%mdl 512] White is clearly winning.} Qxd8 31. Rxd8 Rxd8 32. Nxf5 Rdd7 33. h4 Ne6 34. Nxe7 Rxe7 35. Bxe5 {Precision: White = 92%, Black = 45%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Nguyen Ngoc Truong Son"]
[Black "Raghunandan, Kaumandur Srihari"]
[Result "1-0"]
[ECO "D97"]
[WhiteElo "2630"]
[BlackElo "2412"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,65,0,0,0,2,-10,-10,-17,2,-22,0,0,9,0,28,29,25,25,56,11,16,0,0,0,0,0,0,0,392,385,354,379,356,320,437,432,447,406,545,516,514,513,12827,5614]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nc6 8. Be2 e5 {D97: Grünfeld: Russian System: 7 e4, replies other than 7...Bg4} 9. d5 Nd4 10. Nxd4 exd4 11. Qxd4 c6 12. d6 (12. Qc4 b5 13. Qxc6 Bd7 14. Qd6 Re8 15. Bg5 b4 16. Qxb4 Nxd5 17. Nxd5 Qxg5 {½-½ (59) Aronian,L (2799)-Vachier Lagrave,M (2804) Tbilisi 2017}) 12... Re8 {[#] LiveBook: 5 Games. ...Nxe4 is the strong threat.} 13. Qd3 {With the idea 0-0.} b5 {next ...b4 is good for Black.} 14. a3 Be6 15. f3 Bc4 16. Qd1 Bxe2 $146 17. Nxe2 Re6 18. Qc2 Qxd6 19. O-O Nd7 {[%cal Bf6d7,Bd7b6,Bb6c4][%mdl 32]} 20. Be3 c5 21. Rad1 Qc6 22. Rd5 Bf8 23. Rfd1 $36 {[%mdl 2048] White is more active.} Nb6 24. Rd8 Rxd8 25. Rxd8 {Threatens to win with Qxc5.} Re8 $2 {[%mdl 8192] [#]} (25... Rd6 $11 26. Rb8 Nd7) 26. Nd4 $1 $18 {[%cal Rd4c6][%mdl 512]} cxd4 27. Qxc6 Rxd8 28. Bd2 Nc4 29. Bg5 Rb8 30. b3 Nxa3 31. Qc7 {White is clearly winning.} Re8 32. Qd7 Re6 (32... Re5 $142 33. Qd8 Rxg5) 33. Qc8 {Precision: White = 79%, Black = 56%.} (33. Qd8 $142 Kg7 34. Bh6+ Kxh6 35. Qxf8+ Kh5 36. Qxa3) 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Wen Yang"]
[Black "Vogt, Lothar"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2608"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "29"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,29,36,36,95,87,143,145,218,250,295,285,283,273,275,276]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. b3 e5 7. dxe5 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} Nfd7 (7... dxe5 8. Ba3 Re8 9. Qxd8 Rxd8 10. Nc3 Nc6 11. Rad1 Bf5 12. Nh4 Bd7 13. e3 a6 14. Nd5 Nxd5 15. Bxd5 Be8 16. Nf3 {½-½ (63) Sargissian,G (2672)-Onischuk,V (2637) Riadh 2017}) 8. Bg5 Qe8 9. Nc3 {[#] LiveBook: 8 Games. And now Nd5 would win.White is slightly better.} Nxe5 (9... dxe5 $14 10. Nd5 Na6) 10. Nd5 $16 Nxf3+ ({Better is} 10... Na6) 11. exf3 {[%cal Be2f3,Bf3f4][%mdl 32]} Qe5 {[#]} (11... f6 $16 {keeps fighting.}) 12. Qd2 $1 $18 ({Not} 12. Nxc7 Qxg5 13. Nxa8 Qd8 $17) 12... Na6 13. f4 {White has a decisive advantage.} Qd4 $146 ({Predecessor:} 13... Qxa1 14. Rxa1 Bxa1 15. Ne7+ Kh8 16. c3 f6 17. Bxf6+ Rxf6 18. Qd4 Kg7 19. Nd5 {1-0 (19) Grabert,R (2187)-Kordts,W (2167) Bayern 2003}) 14. Qxd4 Bxd4 15. Rad1 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Karthikeyan, Murali"]
[Black "Pichot, Alan"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2592"]
[BlackElo "2558"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,103,8,8,7,2,0,12,0,0,3,21,4,20,0,0,0,56,52,64,63,56,56,70,65,60,60,77,80,66,73,64,60,85,72,109,95,111,80,91,41,60,78,60,33,37,-29,-28,-21,-34,-9,143,127,149,150,161,154,151,147,148,149,147,135,166,154,155,158,168,95,77,84,162,41,41,29,29,29,41,48,48,48,148,8,148,112,148,0,0,0,1103,1103,1090,977,900,643,4631,2527]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Ba4 (5. e5 Nxb5 6. Nxb5 Nd5 7. Ng5 f6 8. Qf3 e6 9. Ne4 Qb6 10. Nbd6+ Bxd6 11. Nxd6+ Ke7 12. Qg3 Rg8 13. d3 fxe5 14. Nc4 Qc7 15. Nxe5 d6 {1-0 (49) Grischuk,A (2772)-Korobov,A (2652) Huaian 2017}) 5... Qa5 6. e5 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} Ne4 {Threatens to win with ...Nxc3.} 7. Bb3 Nxb3 8. cxb3 {The position is equal.} Nxc3 $1 9. dxc3 Qa6 10. Bf4 b6 11. Ng5 $146 ({Predecessor:} 11. c4 g6 12. O-O Bg7 {1-0 (31) Ventimiglia,C (1935)-Fages,J (1895) IECG email 2004}) 11... Qb7 12. Qd3 ({Reject} 12. e6 f6 $17) 12... h6 (12... Qxg2 $11 13. O-O-O Qg4) 13. Ne4 $14 g5 14. Bg3 $36 {[%mdl 2048] White has some pressure.} Qc6 15. O-O-O Bb7 16. Rhe1 {Nd6+! is the strong threat.} O-O-O 17. Kb1 Rg8 18. b4 ({But not} 18. e6 $6 fxe6 19. f3 Bg7 $15) 18... h5 {aiming for ...h4.} 19. h3 h4 20. Bh2 $1 g4 21. bxc5 gxh3 22. gxh3 Bh6 23. f3 b5 24. Rg1 a6 25. Qd4 Qe6 26. Rg4 Rxg4 27. fxg4 (27. hxg4 $14 Bc6 28. b3) 27... f5 $1 $11 {[%cal Rf5e4]} 28. c6 Bxc6 29. Nc5 Qg6 $2 (29... Qc4 $1 $11 30. Qxc4 (30. gxf5 Qxd4 31. cxd4 Bg2 $15) 30... bxc4 31. gxf5 Rf8) 30. Ka1 $1 $16 fxg4 31. Nxa6 {White threatens Qb6 and mate.} Qc2 32. Nb4 Qe4 {Strongly threatening ...Qxd4.} 33. Nxc6 Qxc6 34. Qxg4 Be3 35. Qxh4 Qf3 {[%cal Rf3d1]} 36. Rb1 e6 37. Bg1 Qf4 38. Qxf4 (38. Qh5 $18) 38... Bxf4 $18 {[%mdl 4096] Endgame KRB-KRB} 39. Bd4 Rh8 (39... d6 $16) 40. Rf1 (40. Rh1 $1 $18) 40... Rxh3 $14 41. a4 Be3 42. Bxe3 Rxe3 43. axb5 Rxe5 $11 {KR-KR} 44. c4 Re4 $1 {[%cal Re4c4] [#]} 45. b3 ({Only move:} 45. Rc1 $1 $16) 45... Re2 (45... d5 $1 $11 {remains equal.}) 46. Rf8+ Kc7 47. c5 ({White should play} 47. Ra8 $16) 47... Rc2 48. b4 {Hoping for b6+.} Rc4 $2 {[%mdl 8192]} (48... e5 $11) 49. b6+ $18 {White is clearly winning.} Kb7 {[#]} 50. Rd8 $1 {[%cal Rd8d7]} Rd4 51. Kb2 Rxb4+ 52. Kc3 {Precision: White = 68%, Black = 55%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Bogdanovich, Stanislav"]
[Black "Gordievsky, Dmitry"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2560"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,122,-2,-11,-17,-16,0,0,7,-29,-7,-31,27,20,20,20,29,22,22,20,20,20,28,20,20,20,30,25,20,27,27,33,36,0,0,0,0,-43,-39,-31,10,9,4,0,0,0,0,0,0,0,0,-471,-493,-981,-980,-975,-880,-845,-395,-323,-400,-398,-398,-398,-398,-398,-398,-398,-398,-417,-421,-421,-343,-412,-402,-326,-309,-750,-735,-670,-414,-673,-673,-691,-673,-3602,-2186,-2489,-424,-4938,-4702,-2493,-1603,-29958,-29960,-29965,-29966,-29965,-29968,-29967,-29968,-29968,-29966,-29967,-29967,-29960,-29940,-12808,-6930]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. d3 d5 6. Qe2 Be7 7. e5 {C00: French: Unusual White 2nd moves} (7. O-O O-O 8. e5 Nd7 9. c4 d4 10. Re1 Rb8 11. h4 b5 12. cxb5 Rxb5 13. Na3 Rb8 14. Nc4 Nb6 15. b3 Nxc4 16. bxc4 Rb6 17. Ng5 {1-0 (32) Carlsen,M (2837)-Ding,L (2774) Saint Louis 2017}) 7... Nd7 8. c4 d4 9. h4 {LiveBook: 4 Games. The position is equal.} h6 10. Bf4 b6 11. Nbd2 Bb7 12. h5 $146 ({Predecessor:} 12. Ne4 Nf8 13. h5 Qd7 {0-1 (59) Berger,S (2420)-McGowan,D (2120) Berlin 2015}) 12... Qc7 13. g4 f6 (13... a6 $15) 14. O-O-O fxe5 {[#]} 15. Nxe5 $1 {[%mdl 512]} Ndxe5 (15... Ncxe5 16. Bxb7) 16. Bxe5 Nxe5 17. Bxb7 Nxd3+ 18. Qxd3 Qxb7 19. Qg6+ Kd7 $1 20. Rhe1 Qc6 {[#]} 21. Nf3 $1 {[%cal Bd2f3,Bf3e5,Be5f7][%mdl 544]} Qd6 (21... Qxf3 22. Qxe6+) 22. Ne5+ ({Much weaker is} 22. Qxg7 Qf4+ 23. Re3 Qf6 $15) 22... Kc7 23. Kb1 Rhg8 $1 24. Nf7 Qd7 $1 25. Rxe6 Bf6 $1 26. Rde1 Rae8 27. Ng5 $1 {[%cal Re6e8]} Rd8 28. Nh7 d3 $132 {[%mdl 2048] Black has counterplay} 29. Nxf6 gxf6 30. Qxf6 {Strongly threatening Re7.} d2 31. Rd1 Qd3+ 32. Ka1 Rxg4 {And now ...Rg1! would win.} 33. a3 $2 {[%mdl 8192]} (33. Re7+ $1 $11 {and White stays safe.} Rd7 34. Rxd7+ Qxd7 35. b3) 33... Rxc4 $19 34. Re7+ (34. Ka2 $142 Rd7 35. Re7) 34... Kb8 35. Ka2 Qd5 {( -> ...Rc3+)} 36. Re5 Qg8 (36... Qd4 $142 37. Qf7 Rc2) 37. Qg6 {[#]} Qxg6 $1 38. hxg6 Rc1 39. Rxd2 Rxd2 {[%mdl 4096] Endgame} 40. Re8+ {[#]} Kb7 $1 41. g7 Rg1 42. g8=R Rxg8 43. Rxg8 Rxf2 {KR-KR} 44. Rg7+ Ka6 45. Rh7 Rh2 46. a4 $2 (46. Kb3) 46... h5 {[%cal Bh6h5,Bh5h4,Bh4h3,Bh3h2][%mdl 32]} 47. Kb3 Rh4 48. Ka3 (48. Kc3 $142) 48... Rh3+ 49. Ka2 h4 50. Kb1 Rh1+ 51. Kc2 h3 52. Kc3 (52. b3 $142) 52... h2 53. Kb3 b5 54. axb5+ Kxb5 55. Ka2 a5 56. Rb7+ Kc6 57. Rh7 c4 58. Rh6+ Kd7 59. Rh7+ Ke6 60. Rh6+ Kf7 61. Rh7+ Kg6 {Precision: White = 42%, Black = 66%.} 0-1

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Sivuk, Vitaly"]
[Black "Hoang, Canh Huan"]
[Result "1/2-1/2"]
[ECO "E16"]
[WhiteElo "2526"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "336"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,336,24,21,28,18,37,-4,0,-4,0,-37,-34,-29,-29,-64,-59,-54,-41,-39,-6,-7,-5,-12,0,-17,-12,-28,0,-36,0,-72,-69,-69,-71,-70,-67,-88,-83,-83,-66,-68,-68,-67,-68,-69,-56,-56,-56,-57,-62,-68,-69,-104,-104,-104,-104,-124,-91,-111,-85,-111,-104,-110,-87,-111,-111,-114,-116,-144,-143,-137,-139,-141,-130,-117,-56,-121,-115,-114,-60,-97,-99,-86,0,-77,0,-95,0,-77,-77,-77,-77,-77,-77,-82,-81,-131,-131,-170,-170,-169,0,-81,0,-169,-174,-168,-165,-179,-149,-149,-114,-125,-117,-120,-98,-110,-87,-167,-196,-187,-167,-167,-167,-154,0,-164,-156,-154,-145,-141,-122,-125,-108,-104,0,-116,-117,-122,-68,-100,-76,-65,-63,-118,-113,-109,-111,-154,-142,-143,-110,-171,0,-48,-38,-50,-24,-33,-27,-43,-8,-1,-12,-6,0,-83,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12851,-29981,-12851,-29979,-12851,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Qc2 Be4 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} (8... c5 9. Rd1 Be4 10. Qc1 cxd4 11. Nxd4 Bxg2 12. Kxg2 Na6 13. Bxb4 axb4 14. Nd2 d5 15. Qc2 Qd7 16. cxd5 {½-½ (56) Aronian,L (2750)-Ivanchuk,V (2779) Wijk aan Zee 2009}) 9. Qc1 {LiveBook: 12 Games} c6 $146 ({Predecessor:} 9... d5 10. Bg5 dxc4 11. Bxf6 Qxf6 12. a3 {½-½ (12) Damaso,R (2404)-Starostits,I (2464) Gijon 2014}) 10. Bf4 d5 11. c5 a4 12. a3 Ba5 {[%cal Bb4a5,Ba5c7,Bc7e5][%mdl 32]} 13. Nc3 bxc5 14. dxc5 Bc7 15. Bg5 Bxf3 16. Bxf3 Nbd7 17. Qc2 $1 Be5 18. Nxa4 Qa5 19. Nb6 Nxb6 20. cxb6 Qxb6 21. Rab1 Rfb8 22. Be3 Qb3 23. Qd2 (23. Qxc6 $11 Rc8 24. Qb6) 23... Nd7 {[%cal Bf6d7,Bd7b6,Bb6c4][%mdl 32]} 24. Rfc1 Nb6 25. Rxc6 Nc4 26. Qd3 Qxd3 27. exd3 Nxa3 28. Ra1 Bxb2 29. Ra2 Bf6 30. Bf4 Rd8 31. Rb6 Nc4 32. Rxa8 Nxb6 33. Ra6 Nd7 34. Ra7 g6 35. h4 h5 36. Rc7 Nb6 37. Rc6 Na4 38. Kf1 Kg7 39. Rc7 Re8 40. Bd6 Nc3 41. Rb7 Ra8 42. g4 Ra6 ({But not} 42... Bxh4 $6 43. gxh5 Bf6 44. h6+ Kxh6 45. Rxf7 $11) 43. Bg3 hxg4 44. Bxg4 Na4 $1 45. Rc7 Nb2 (45... Bd4 $17 46. h5 Nc5 47. h6+ Kxh6 48. Rxf7 g5) 46. Be2 (46. Ke2 $15) 46... Ra1+ $17 47. Kg2 Ra3 ({Black should play} 47... Re1 $17 48. Rc2 Na4) 48. Bg4 {Threatens to win with Bxe6.} Ra6 49. Be2 Ra3 50. Bg4 $1 {[%cal Rg4e6] Hoping for Bxe6.} Ra6 51. Be2 Ra3 52. Bg4 $1 {[%cal Rg4e6] Bxe6 is the strong threat.} Rc3 $1 {[%cal Rc3c7] White must now prevent ...Rxc7.} 53. Rb7 Rc6 54. Be2 Bd4 55. Rb4 Rc2 56. Kf1 Bf6 57. Rb7 Rc1+ $1 58. Kg2 Rc2 (58... Re1 $1 $19 {[%cal Re1e2] and Black stays clearly on top.} 59. Bf1 Nd1) 59. Kf1 Rc1+ (59... Rc3 $17 60. Bg4 Rc1+ 61. Kg2 Rc6) 60. Kg2 $19 Re1 $1 {[%cal Re1e2]} 61. Bf1 Na4 62. Rb3 Nc5 63. Rb5 Bd4 64. Rb4 Bc3 65. Rb5 Nd7 $1 66. Rb3 Rc1 67. Be2 (67. Rb7 $17 {is a better defense.} Nc5 68. Rc7) 67... Be5 68. f4 Bd4 69. h5 Rc2 70. Kf1 Rc1+ 71. Kg2 gxh5 72. Bxh5 Rc2+ 73. Kf1 {intending Rb7.} Nc5 74. Ra3 Rc1+ 75. Kg2 Rc2+ 76. Kf1 $1 Rd2 77. Be2 Nd7 (77... Kf6 $17 78. Bf2 Bxf2 79. Kxf2 d4) 78. Rb3 Nf8 79. f5 exf5 80. Rb5 ({White should try} 80. Bf3 $15) 80... Ne6 $17 {Strongly threatening ...f4.} 81. Rxd5 Kg6 82. Rd7 Rc2 83. Bf3 Rc1+ 84. Ke2 (84. Kg2 $17 {keeps fighting.}) 84... Rc2+ $2 (84... f4 $19 85. Be1 Be3 86. Be4+ Kg7) 85. Kd1 Rc3 86. Kd2 Ra3 87. Bd5 $1 {[%cal Rd5e6] aiming for Bxe6.} Bf6 88. Bc4 f4 89. Bxe6 fxg3 90. Bxf7+ $11 {[%mdl 4096] Endgame KRB-KRB} Kf5 91. Bd5 {[#]} (91. Ke2 $11) 91... g2 (91... Ra2+ $1 $17 {[%mdl 512]} 92. Ke1 (92. Bxa2 $2 {loses.} g2 $19) 92... Bh4) 92. Bxg2 Ra2+ 93. Ke3 Rxg2 {KRB-KR} 94. Rd5+ Ke6 95. Rb5 Rg3+ 96. Ke4 Rg4+ 97. Kf3 Rh4 98. Rb8 Be5 99. Re8+ Kd5 100. Rd8+ Bd6 101. Ke3 Rh3+ 102. Ke2 Ke5 103. Kd2 Bc7 104. Rd7 Ba5+ 105. Kc2 Bb6 106. Rb7 Bd4 107. Rb5+ Kf4 108. Rb8 Rh2+ 109. Kd1 Ke3 110. Rb3 Ra2 111. Kc1 Ke2 112. Kb1 Ra8 113. Kc2 $2 {[%mdl 8192]} (113. Kc1 $11) 113... Rc8+ $19 114. Kb1 Kd2 115. Ka2 $2 {[%mdl 8192]} (115. Rb4 $11) 115... Kc2 116. Ra3 Rb8 (116... Rh8 $19 117. Ra6 Rh1 118. Ka3 Ra1+ 119. Kb4 Rxa6 120. Kb5 Rb6+ 121. Kc4 Rd6 122. Kb4 Kxd3 123. Kb3 Rb6+ 124. Ka3 Kc4 125. Ka2 Bg7 126. Ka3 Ra6#) 117. Ra6 Rb3 $2 (117... Rb2+ $19 118. Ka3 Bc5+ 119. Ka4 Kxd3) 118. Rh6 {The position is equal.} Rxd3 119. Rh2+ Kc3 120. Rc2+ $1 Kb4 121. Kb1 Bc3 122. Rh2 Kb3 {[%cal Rd3d1]} 123. Rb2+ Kc4 124. Rh2 Rd1+ 125. Kc2 Ra1 126. Re2 (126. Rh4+ {is more complex.} Bd4 127. Rh3 Ra2+ 128. Kd1 Bc3 129. Rf3) 126... Ra8 127. Re4+ Bd4 128. Re2 Ra3 129. Kd2 Ra1 130. Kc2 Rh1 131. Kd2 Rh3 132. Kc2 Be3 133. Rg2 Bf4 134. Kd1 Kd4 135. Kc2 Rc3+ 136. Kb1 Be5 137. Rc2 Rg3 138. Re2 Kd5 139. Kc2 Ra3 140. Kd1 Bd4 141. Kc2 Rc3+ 142. Kd2 Kc4 143. Kd1 Kd3 144. Rd2+ Ke4 145. Rc2 Ra3 146. Ke2 Ra1 147. Kd2 $1 Ra3 148. Ke2 Rg3 149. Kd1 Rg1+ 150. Ke2 Rh1 151. Kd2 Be5 152. Ke2 Rh3 153. Rc4+ Bd4 {And now ...Rh2+ would win.} 154. Rc2 Rd3 155. Rc4 Re3+ 156. Kd2 Rf3 (156... Ke5 {keeps more tension.} 157. Ra4 Kd5 158. Ra5+ Kc6 159. Ra8 Kb7) 157. Rc2 Be3+ 158. Ke2 Rf2+ 159. Kd1 Rf1+ 160. Ke2 Rh1 161. Rc4+ Bd4 162. Rc2 Rg1 163. Kd2 Rg3 164. Ke2 Bc3 165. Kf2 Rh3 {( -> ...Rh2+)} 166. Ke2 Re3+ 167. Kf2 Kf4 168. Kf1 Bd4 {Precision: White = 68%, Black = 66%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Tran, Tuan Minh"]
[Black "Zhao, Jun"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2522"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,90,12,6,-11,5,-5,7,0,21,0,13,19,26,27,29,26,27,21,41,-5,0,4,-10,-4,0,-10,-17,-65,-63,-108,-90,-124,-99,-120,-88,-93,-102,-90,-95,-87,-2,-25,-52,-48,0,-8,0,-51,0,-37,-21,-29,-37,-95,-104,-605,-599,-929,-929,-2138,-2072,-1931,-970,-1880,-1806,-1733,-389,-343,-335,-327,-299,-382,-389,-834,-924,-12838,-12840,-12840,-12840,-12838,-12837]} 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. d3 d6 6. Bd2 Nf6 {LiveBook: 6 Games. A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} (6... e6 7. a3 Nge7 8. b4 cxb4 9. axb4 Nxb4 10. Qa4+ Nbc6 11. Nf3 O-O 12. O-O d5 13. Rfb1 b6 14. cxd5 exd5 {½-½ (31) Vachier Lagrave,M (2789)-So,W (2770) Leuven 2016}) 7. Qc1 h5 8. Nf3 Bd7 {The position is equal.} 9. Rb1 a6 $146 ({Predecessor:} 9... Qc8 10. h4 a6 11. Bg5 Rb8 12. Bxf6 Bxf6 13. Nd5 Bg7 14. Nb6 {½-½ (59) Pietraszko,J-Karpinski,B (1793) Polanica Zdroj 2010}) 10. O-O Rb8 11. a3 Nd4 12. b4 Bc6 13. bxc5 (13. Bg5 {with more complications.} O-O 14. e4 Nxf3+ 15. Bxf3 Re8 16. Bh6) 13... dxc5 {[%cal Bd6c5,Bc5d4][%mdl 32]} 14. Bf4 {aiming for Nxd4.} Rc8 15. Nxd4 cxd4 16. Bxc6+ $1 Rxc6 17. Na2 $1 b5 18. Nb4 Rc8 $1 19. Nxa6 bxc4 20. dxc4 Ne4 {[%cal Bf6e4,Be4d6,Bd6f5][%mdl 32]} 21. Rb7 O-O {[%mdl 1024] Black has strong compensation.} 22. Nb4 e5 23. Bd2 {[#]} Nd6 $1 24. Bg5 Qa5 25. Rd7 Rxc4 (25... Nxc4 $17 {Threatens to win with ...Qa4.} 26. Nd5 Rc5 27. Ne7+ Kh7) 26. Qb1 $11 Nf5 27. Nd5 Rcc8 28. Be7 $132 {[%mdl 2048] White puts up resistance} Rb8 29. Qa2 (29. Qe4 $11) 29... Qb5 (29... Qa4 $15 30. Rc7 Nxe7 31. Nxe7+ Kh7) 30. Ra7 Nxe7 31. Nxe7+ Kh7 32. Rc1 (32. a4 $15 Qc5 33. Rd7) 32... e4 $17 {[%cal Be5e4,Be4e3][%mdl 32]} 33. Qd5 $2 {[%mdl 8192]} (33. Nd5 $17) 33... Qxe2 $19 34. Rf1 e3 35. Nc6 {[#]} Rb1 $1 {[%csl Gb1][%cal Re2f1][%mdl 512]} 36. Qg2 (36. Rxb1 exf2+) 36... Rxf1+ 37. Qxf1 Qf3 38. Nb4 Rc8 $2 (38... e2 {( -> ...Qh1+!)} 39. Qb1 Rb8) 39. fxe3 Qxe3+ 40. Kg2 f5 41. Kh3 Qe4 ({Weaker is} 41... d3 42. Rd7 $17) 42. Qb5 $2 (42. Qf4 Rc3 43. Qxe4 fxe4 44. Nd5) 42... Re8 {Black is clearly winning.} 43. Nd5 Qg4+ 44. Kg2 Re2+ 45. Kg1 Qf3 {Precision: White = 35%, Black = 63%.} 0-1

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Xu Yi"]
[Black "Sammed Jaykumar, Shete"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2499"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,72,11,14,36,25,16,15,42,0,0,0,0,0,0,0,0,0,0,0,0,8,7,-24,-12,-19,0,0,0,0,0,0,13,0,6,7,7,4,10,-27,-27,-35,-31,-80,0,0,0,-4,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 Nxd4 9. Bxf7+ Rxf7 10. Nxe5 Rf8 11. Qxd4 c5 {C88: Closed Ruy Lopez: Anti-Marshall Systems} (11... Bb7 12. c4 c5 13. Qd3 Qc7 14. Nf3 bxc4 15. Qxc4+ d5 16. exd5 Bxd5 17. Qe2 Bd6 18. Nc3 Bxf3 19. Qxf3 Bxh2+ {½-½ (28) Kamsky,G (2717)-Leko,P (2756) Jermuk 2009}) 12. Qd1 Bb7 13. Nc3 {LiveBook: 15 Games} b4 14. Nd5 Nxd5 15. exd5 Bd6 16. f4 Qc7 17. c4 bxc3 $1 18. bxc3 c4 $146 ({Predecessor:} 18... Rae8 19. c4 Bxe5 20. fxe5 Rxe5 {1-0 (64) Blatny,F-Weiner,M Prague 1954}) 19. Rb1 Rae8 20. Be3 Ba8 21. Bb6 Bc5+ $1 22. Bxc5 Qxc5+ 23. Qd4 (23. Kh1 {looks sharper.} d6 24. Nd7 Rxe1+ 25. Qxe1 Qxd5 26. Rb2) 23... Qxd4+ 24. cxd4 Bxd5 25. Nxd7 Rxe1+ 26. Rxe1 $11 {[%mdl 4096] Endgame KRB-KRN} Rd8 27. Nc5 Bf7 28. Rd1 Bg6 29. Kf2 c3 {[%cal Bc4c3,Bc3c2][%mdl 32]} 30. Nb3 a5 31. Nxa5 c2 32. Rc1 {[#] And now Nc6 would win.} Rxd4 33. Ke3 Re4+ (33... Rd1 $17 34. Nb3 h5) 34. Kf3 {The position is equal.} Ra4 35. Nb3 Rxa2 {[#] Strongly threatening ...Ra3.} 36. Nd4 Ra3+ {Precision: White = 60%, Black = 78%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Le, Tuan Minh"]
[Black "Nguyen, Duc Hoa"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2489"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,77,47,45,19,37,43,55,40,42,40,44,0,0,0,0,0,0,0,0,0,0,0,11,13,10,3,9,4,15,19,42,41,39,46,75,77,210,205,342,342,342,339,316,326,286,208,342,342,342,342,338,314,465,450,680,613,749,734,770,760]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Rc1 Nbd7 {D37: Queen's Gambit Declined: 5 Bf4} 8. Bd3 (8. h3 a6 9. Be2 b6 10. O-O Bb7 11. Qb3 c5 12. cxd5 Nxd5 13. Bh2 b5 14. Ne4 Qb6 15. dxc5 Nxc5 16. Nxc5 Bxc5 {1-0 (74) Aronian,L (2803)-Wang,H (2735) Beijing 2013}) 8... dxc4 9. Bxc4 c5 10. O-O a6 {LiveBook: 3 Games} 11. Bb3 cxd4 12. exd4 Nb6 13. Re1 $146 ({Predecessor:} 13. Qd3 Nbd5 14. Bg5 h6 15. Bd2 Nxc3 16. bxc3 {1-0 (27) Tonon,A-Raspor,G Nova Gorica 1996}) 13... Nbd5 14. Nxd5 Nxd5 15. Be5 b6 16. Nd2 Bb7 17. Qg4 {[%csl Ge5][%cal Rg4g7] [#]} Nf6 18. Qg3 Rc8 19. Rxc8 $40 {[%mdl 128] White attacks.} Qxc8 20. Nc4 Qc6 21. Ne3 {[#] Hoping for d5!} Qd7 22. Rd1 Rc8 23. h3 g6 $1 24. Qf4 Nh5 25. Qg4 {Strongly threatening d5.} Bf6 26. Nc4 Qc6 27. Nd6 Rd8 (27... Bxe5 $16 28. dxe5 Rf8) 28. d5 $1 $18 {[%cal Rd5c6]} exd5 (28... Qc7 $142) 29. Bxd5 Qxd5 30. Rxd5 Bxd5 31. Bxf6 Nxf6 32. Qf4 Nh5 (32... Be6 {was called for.} 33. a3 Nd5) 33. Qb4 b5 34. a3 Nf6 35. Qc5 Kg7 (35... Ne4 $142 36. Qxd5 Nxd6) 36. Qb6 {White is clearly winning.} Ra8 (36... Rd7 $142 37. Qxa6 Be6) 37. Qd4 h6 38. Qe5 Be6 39. Ne4 {Precision: White = 75%, Black = 44%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Pena Gomez Manuel"]
[Black "Taher, Yoseph Theolifus"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2478"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,85,-7,3,0,25,0,7,0,18,20,28,25,62,63,77,52,146,144,155,108,130,116,114,128,210,209,195,141,146,144,141,140,152,139,176,188,176,161,215,197,268,254,258,249,409,397,422,419,398,421,434,430,429,425,451,439,586,588,579,535,781,756,938,900]} 1. g3 c5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. e4 e6 6. d3 Nge7 7. Nge2 d6 8. a3 Rb8 9. O-O O-O 10. Rb1 b6 11. b4 Bb7 12. Be3 Nd4 {LiveBook: 4 Games} 13. Qd2 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} Re8 14. Rfc1 $146 ({Predecessor:} 14. Bh6 Bh8 15. h4 a6 16. h5 Nec6 17. Nxd4 Nxd4 18. Ne2 Bc6 19. Nxd4 Bxd4 20. hxg6 hxg6 {1-0 (41) Diczew,F (2124)-Susla,M (1987) Lublin 2012}) 14... Qd7 15. Bh6 {The position is equal.} Bh8 16. Nxd4 cxd4 17. Ne2 d5 18. exd5 exd5 19. c5 $1 Qa4 (19... Rbc8 $14) 20. Bf4 $36 {[%mdl 2048] White has strong initiative.} Ra8 21. Qc2 Qd7 22. b5 {Strongly threatening c6.} bxc5 23. Qxc5 Nf5 (23... Rac8 $16 24. Qb4 (24. Qxa7 Rxc1+ 25. Rxc1 Nc8 $16) 24... Nf5) 24. Qc7 $18 Rad8 25. Rb2 (25. Bf3 $18) 25... Ng7 $16 26. Qxd7 ({Don't do} 26. Nxd4 Nf5 $14) 26... Rxd7 27. Rbc2 Ne6 28. a4 a6 {[#]} 29. b6 $1 a5 30. Bd2 {[%cal Bf4d2,Bd2a5,Ba5b4][%mdl 32]} Rd6 (30... Be5 $142 31. Re1 (31. Bxa5 Ra8 $14) 31... Rb8) 31. Rb2 $18 ({Weaker is} 31. Bxa5 Ra8 $14) 31... Bf6 (31... Be5 $142 32. Bxa5 Rb8) 32. Bxa5 Ra8 33. Rc7 Nd8 $2 (33... Rb8 {is a better defense.} 34. Bh3 Ng5) 34. Rb5 Be5 35. Bb4 Rxb6 {[#]} 36. Re7 $1 ({Inferior is} 36. Rxb6 Bxc7 37. Rb5 Rxa4 $17) 36... Re6 {White is clearly winning.} 37. Rexb7 Nxb7 38. Rxb7 Rd8 39. Rb5 Bd6 40. Nxd4 Ree8 41. Nc6 Rd7 42. Rxd5 Re6 43. a5 {Precision: White = 85%, Black = 33%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Karthikeyan, P."]
[Black "Le, Quang Liem"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "2473"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,56,11,8,10,9,23,33,25,19,19,-4,31,18,27,16,16,2,29,0,16,14,31,31,27,10,3,-13,-11,-22,-31,-28,34,30,86,91,81,87,79,76,138,130,84,89,98]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nd2 O-O 6. Ngf3 b6 7. O-O Bb7 8. b3 {LiveBook: 30 Games. E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} a5 (8... c5 9. Bb2 Nbd7 10. a3 Bxd2 11. Nxd2 cxd4 12. Bxd4 Rc8 13. b4 Qe7 14. Rc1 Rfd8 15. Qb3 dxc4 16. Nxc4 Bxg2 17. Kxg2 {0-1 (55) Ding,L (2777)-Carlsen,M (2837) Riadh 2017}) 9. Bb2 Na6 $146 ({Predecessor:} 9... Nbd7 10. Qc2 Re8 11. Rfd1 c5 12. a3 Bxd2 13. Rxd2 Qc7 14. cxd5 Bxd5 15. Ne5 Bxg2 16. Nxd7 Nxd7 17. Kxg2 {½-½ (23) Romm,M (2445)-Keuter,K (2443) ICCF email 2017}) 10. e3 {White has an edge.} Be7 11. a3 c5 12. Qe2 Ra7 13. cxd5 exd5 14. Rfd1 Nc7 15. Ne5 Ne6 16. a4 Re8 17. Rac1 h6 18. Nb1 Ba6 19. Qc2 Rc7 20. Qf5 cxd4 {[#] White must now prevent ...Bc5.} 21. exd4 Bb4 22. Nc3 g6 (22... Bxc3 $11 23. Bxc3 Qc8) 23. Qb1 $1 $14 Nxd4 (23... h5 $11) 24. Nxf7 $1 $16 Kxf7 25. Rxd4 {And now Rf4 would win.} Qc8 {[%cal Rb4c3]} 26. Qa1 {[#] Threatens to win with Rf4.} Bxc3 (26... g5 $142) 27. Rxc3 Rxc3 28. Bxc3 Ne4 {Precision: White = 60%, Black = 44%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Santiago, Yago De Moura"]
[Black "Vo, Thanh Ninh"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2473"]
[BlackElo "2370"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,124,0,0,7,0,17,11,40,0,23,18,23,32,55,31,28,37,63,26,33,28,29,38,49,6,44,47,60,66,66,53,62,45,47,47,53,52,46,43,43,20,37,42,32,35,36,11,26,0,0,0,42,47,45,48,42,42,125,134,120,131,111,87,83,92,65,47,147,142,195,180,247,104,125,131,220,217,139,24,427,393,914,867,822,728,1434,1497,1071,1013,5616,5616,4134,2285,29985,29986,29986,29987,29988,29979,29994,29994,29994,29995,29995,29996,29996,29997,29997,29997,29998]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. Qc2 g6 (5... dxc4 6. e4 b5 7. b3 b4 8. Na4 cxb3 9. axb3 e6 10. Bd3 Be7 11. O-O h6 12. Bf4 O-O 13. Qd2 {0-1 (34) Matlakov,M (2735)-Fedoseev,V (2718) St Petersburg 2017}) 6. e4 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} dxe4 7. Nxe4 Nxe4 8. Qxe4 Bg7 9. Be2 {LiveBook: 9 Games} Bf5 10. Qh4 $146 ({Find the theoretical novelty and annotate with similar games:} 10. Qe3 Bg4 11. O-O O-O 12. Rd1 Nd7 13. h3 Bxf3 14. Qxf3 {½-½ (22) Sadzikowski,D (2584)-Matuszewski,M (2505) Katowice 2018}) 10... Nd7 11. O-O e5 12. Bg5 f6 13. Be3 O-O 14. Rad1 Qe7 15. dxe5 Nxe5 16. Nd4 Be6 17. b3 Bf7 18. Rfe1 {Strongly threatening f4.} c5 19. Nf3 {aiming for Nxe5.} Rad8 20. Qg3 b6 21. Nxe5 fxe5 22. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Bf6 23. h5 Bh4 24. Qg4 Be6 25. Qe4 {And now Rxd8 would win.} Bf5 26. Qc6 $1 {[%cal Rc6b6]} Qf6 27. Qxf6 Bxf6 28. g4 Bc2 29. Rxd8 Rxd8 30. g5 Be7 31. Bf3 gxh5 32. Bf4 exf4 33. Rxe7 $11 {[%mdl 4096] Endgame KRB-KRB} Bg6 34. Bd5+ {[%mdl 1024] White has compensation.} Kf8 35. Re6 Rb8 36. Kg2 a5 (36... Bb1 $1 $14) 37. Kf3 $16 Bb1 38. a3 ({Reject} 38. Kxf4 $6 Bxa2 39. Re3 Bb1 $11) 38... Bc2 39. Kxf4 Bxb3 40. Rh6 Kg7 41. Be4 Bxc4 ({Black should play} 41... Rf8+ $14 42. Ke3 Bxc4) 42. Rxh7+ Kg8 (42... Kf8 $16) 43. g6 $1 $18 Rf8+ (43... Re8 $142) 44. Kg3 (44. Kg5 $1 $18 {is the precise move to win.}) 44... Re8 45. f3 b5 (45... Kf8 $16) 46. Rxh5 Rc8 47. f4 ({White has to play} 47. Rh7 $1 $16) 47... Re8 $2 {[%mdl 8192]} (47... Kg7 $11) 48. Kf3 Be2+ $2 (48... Rc8 49. Rh7 a4) 49. Kxe2 Rxe4+ {KR-KR} 50. Kf3 Re1 51. Kg4 Rg1+ {[#]} 52. Kf5 $1 {[%cal Rf5f6]} b4 53. Kf6 Rg4 {[#]} 54. f5 $1 b3 55. Rh7 {White mates.} Rd4 56. Rb7 Rd6+ 57. Kg5 c4 58. Rb8+ Kg7 {[#]} 59. f6+ $1 {[%mdl 512]} Rxf6 60. Rb7+ Rf7 61. Rxf7+ Kg8 62. Rb7 a4 {Precision: White = 65%, Black = 28%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Nguyen, Van Huy"]
[Black "Aravindh, Chithambaram VR."]
[Result "1/2-1/2"]
[ECO "A50"]
[WhiteElo "2454"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "170"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,170,28,31,57,60,65,62,60,64,80,76,93,86,79,81,83,27,30,29,29,26,31,25,39,14,44,43,97,102,75,68,75,23,123,118,121,126,120,112,273,200,195,200,193,185,198,183,219,196,207,214,260,252,317,114,122,102,102,95,113,115,114,113,112,95,89,0,0,0,-13,-44,-13,-60,-13,-8,-8,-8,-8,-9,0,0,0,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. a3 d5 5. Nc3 a6 6. cxd5 {E10: Blumenfeld Gambit} exd5 7. Bg5 {LiveBook: 10 Games} Be6 (7... Be7 8. e3 Nh5 9. Bxe7 Nxe7 10. Bd3 Nf6 11. Qc2 g6 12. Ne5 Bf5 13. Bxf5 Nxf5 {1-0 (40) Akobian,V (2611)-Stripunsky,A (2578) Saint Louis 2011}) 8. e3 {White is slightly better.} h6 9. Bh4 Bd6 10. Bd3 g5 $146 ({Find the theoretical novelty and annotate with similar games:} 10... O-O 11. O-O Re8 12. Rc1 g6 13. Re1 {1-0 (35) Fourie,M (2376)-Werner,G (2359) ICCF email 2008}) 11. Bg3 Rg8 12. Qc2 h5 13. Bxd6 Qxd6 14. O-O-O ({White should play} 14. Rc1 $16) 14... h4 $11 15. h3 O-O-O 16. Kb1 Kb8 17. Rc1 Ne7 18. Ka1 Bc8 19. Na4 b6 {[#]} ({Black should try} 19... Rg7 $14) 20. Qb3 $1 $16 Ka7 21. Rc2 {aiming for Rhc1.} Bb7 22. Rhc1 (22. Ne5 $16 Rgf8 23. Rhc1) 22... Rc8 (22... Ne8 $1 $11 {remains equal.}) 23. Nc5 Nd7 24. Nxd7 Qxd7 25. Ne5 $1 $36 {[%csl LRd7,LRf7][%mdl 2048] White is on the roll.} Qe6 $2 (25... Qd6 $16) 26. Rxc7 Rxc7 27. Rxc7 Rc8 28. Rxc8 Bxc8 29. Qc2 Kb8 30. Be2 f6 31. Bg4 Qd6 32. Bxc8 Nxc8 {[#]} 33. Nf3 $2 (33. Ng4 $1 $18 {is the precise move to win.}) 33... Qe6 34. Qe2 Kb7 35. Nd2 Qc6 36. Kb1 Nd6 37. Qd3 a5 38. f3 f5 39. Nb3 (39. f4 $16) 39... Qc4 $11 40. Qd1 $1 Qb5 41. Ka2 Nc4 {...a4 is the strong threat.} 42. Qe2 Qe8 (42... Nxa3 $5 {[%cal Rb5e2]} 43. Qxb5 Nxb5 $15) 43. e4 {The position is equal.} fxe4 44. fxe4 Qxe4 45. Qf2 $1 Qf4 46. Qc2 $1 Qe4 47. Qf2 Qf4 48. Qc2 $1 a4 49. Nc1 Qxd4 50. Qh7+ $1 Ka6 {[%csl Gc4][%cal Rd4b2]} 51. Nd3 {Intending Nb4+ and mate.} Ne5 52. Nb4+ $1 Kb5 53. Qg8 Qc4+ 54. Kb1 Qe4+ 55. Ka2 Nd3 56. Nxd3 Qc4+ 57. Ka1 {Threatens to win with Ne5.} Qxd3 58. Qxg5 {[%mdl 4096] Endgame KQ-KQ} Qf1+ 59. Ka2 Qc4+ 60. Ka1 Qe4 61. g4 hxg3 62. Qxg3 d4 63. h4 d3 {( -> ...Qh1+)} 64. Qg5+ Kc4 65. Qc1+ Kd4 66. h5 Qe3 67. Qc3+ Ke4 68. Kb1 Kf3 69. Qc6+ Kf2 {Strongly threatening ...Qe1+.} 70. h6 d2 71. Kc2 Qe2 72. Qxb6+ Kf1 73. Qf6+ Ke1 $1 74. Qh4+ Kf1 75. Qh1+ Kf2 76. Qh2+ Kf1 77. Qf4+ Ke1 $1 78. Qg3+ Kf1 79. Qf4+ Ke1 $1 80. Qh4+ Kf1 81. Qh1+ Kf2 82. Qd1 Ke3 {[%csl Ge3][%cal Re2d3]} 83. Qg1+ Kf3 $1 84. Qh1+ Kf2 85. Qd1 Ke3 {Precision: White = 72%, Black = 58%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Bui, Vinh"]
[Black "Rozum, Ivan"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2400"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,42,50,57,54,85,85,87,89,88,91,94,100,112,89,93,47,52,51,41,42,70,70,59,51,103,103,103,103,103]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 5. d5 Nh5 6. Be3 {A45: Trompowsky Attack} e5 7. Qd2 d6 8. g4 Nf4 {LiveBook: 3 Games} 9. h4 Be7 $146 {[#]} ({Predecessor:} 9... f5 10. Bxf4 exf4 11. gxf5 Be7 12. Qxf4 Qb6 13. Qa4+ {0-1 (54) Stefanova,A (2481)-Gashimov,V (2655) Tromsoe 2007}) 10. Bf2 $1 h5 11. g5 Ng6 12. e3 {[%cal Be2e3,Be3e4][%mdl 32]} f5 13. c4 O-O 14. Nc3 f4 15. e4 Na6 16. a3 Bd7 17. Nge2 Nc7 18. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} b6 19. Nc1 a5 {[#]} (19... Qc8 $14) 20. b5 $1 $16 Ra7 21. N1e2 Na8 {Precision: White = 86%, Black = 44%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Shyaamnikhil P"]
[Black "Lei, Tingjie"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2394"]
[BlackElo "2545"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,44,7,0,-4,0,17,-1,0,0,0,-16,-3,4,10,0,0,0,0,0,25,17,41,26,28]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} Ne8 10. Nd5 Bd6 11. Re2 c6 12. Ne3 {LiveBook: 9 Games} Be7 13. Qe1 {[#]} Bg5 $146 ({Predecessor:} 13... Bf6 14. Nf5 d5 15. Ne7+ Kh8 16. Nxc8 Rxc8 {½-½ (45) Nakamura,H (2787)-Aronian,L (2805) Saint Louis 2014}) 14. Nf5 d5 15. Ne7+ Bxe7 16. Rxe7 Nd6 {[%cal Be8d6,Bd6f5,Bf5h4][%mdl 32] White must now prevent ...Nf5.} 17. Re2 Nf5 {[#] Strongly threatening ...Nd4.} 18. Qd1 Qf6 19. d3 Bd7 20. c3 Nh4 21. Qd2 Bg4 22. Re1 Rae8 {Precision: White = 67%, Black = 53%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Cao, Sang"]
[Black "Dao, Thien Hai"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2381"]
[BlackElo "2474"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,50,54,53,56,58,67,54,66,37,54,54,91,91,93,82,83,94,129,61,60,62,79,54,89,93,118,121,160,112,103,32,47,47,45,45,44]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Be7 6. O-O O-O 7. c4 Nf6 8. Nc3 c6 9. Re1 {LiveBook: 5 Games} Be6 {C43: Petroff Defence: 3 d4} 10. cxd5 cxd5 11. Bf4 $146 ({Predecessor:} 11. Qb3 Qc8 12. Bf4 Nc6 13. Rac1 Nxd4 14. Qa4 Nc6 15. Nb5 Nd7 16. Nxc6 bxc6 17. Nc7 {1-0 (32) Kurmann,O (2446)-Bex,P (2235) Switzerland 2015}) 11... Nbd7 12. Qb3 Nxe5 13. Bxe5 Qb6 {[#]} 14. Qxb6 $1 axb6 15. Nb5 Bb4 16. Rec1 Nd7 17. Bd6 ({White should try} 17. Bf4 $16) 17... Bxd6 $14 18. Nxd6 Ra4 19. Nb5 Rb8 20. b3 Ra5 21. a4 Nf8 22. f3 Bd7 23. Kf2 (23. Nc3 $16) 23... Bxb5 {White is slightly better.} 24. Bxb5 Ne6 25. Ke3 Rd8 {Precision: White = 42%, Black = 34%.} 1/2-1/2

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Tran, Minh Thang"]
[Black "Liu, Guanchu"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2366"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,100,0,0,0,10,0,8,0,0,0,0,-24,-24,-24,-24,-24,-24,-25,-22,-38,-33,-35,-25,-33,-28,-42,0,0,21,19,28,32,30,29,24,41,33,43,46,45,34,22,36,32,32,32,37,6,14,0,20,54,102,92,88,86,116,117,133,120,313,306,265,34,32,27,48,10,24,17,13,0,0,0,0,0,304,334,12850,12851,29973,29974,29973,29974,29968,12851,12851]} 1. d4 e6 2. Nf3 Nf6 3. Bf4 b6 4. e3 Be7 5. h3 Bb7 6. Nbd2 O-O 7. Bd3 d5 8. Ne5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (8. O-O Nbd7 9. c3 Ne4 10. Qe2 c5 11. a4 f5 12. a5 c4 13. Bxe4 dxe4 14. Ne5 b5 15. b3 Nxe5 16. Bxe5 Ba6 17. bxc4 bxc4 {½-½ (45) Khotenashvili,B (2493)-Batsiashvili,N (2476) Batumi 2016}) 8... Nbd7 {LiveBook: 6 Games} 9. c3 Ne4 10. O-O {The position is equal.} Nxe5 11. dxe5 Nc5 $146 ({Predecessor:} 11... Nxd2 12. Qxd2 c5 13. Qe2 f5 14. exf6 Bxf6 15. Qg4 Qe7 16. Bg3 Rad8 {½-½ (35) Bakalarz,M (2380)-Klekowski,M (2096) Rewal 2006}) 12. Bc2 Ba6 13. Qg4 ({Much weaker is} 13. Qh5 g6 $17) 13... Bxf1 14. Bh6 $1 {[%csl Gh6][%cal Rg4g7] [#]} g6 $1 {aiming for ...Ba6.} ({Don't go for} 14... Bf6 $2 15. exf6 Qxf6 16. Bg5 $18) 15. Bxf8 Bd3 16. Bxe7 Qxe7 17. Bb1 a5 18. Qd4 Bxb1 19. Rxb1 Qg5 20. g4 f5 21. exf6 Rf8 22. b4 $36 {[%mdl 2048] White is pushing.} Nb7 23. c4 axb4 24. cxd5 Qxd5 25. Rxb4 Qxd4 26. Rxd4 Rxf6 $14 {[%mdl 4096] Endgame KRN-KRN} 27. Ne4 Rf7 28. g5 Kg7 29. Kg2 h6 30. gxh6+ Kxh6 31. f4 Re7 32. Rc4 c5 33. Ra4 Nd8 34. Ra6 Rb7 35. Nd6 Rb8 36. Ra7 g5 37. Rd7 Kg6 $2 (37... c4 $16 {is a better defense.}) 38. fxg5 $18 Nc6 {[#]} 39. Nc4 $2 ({White must play} 39. h4 $1 $18) 39... Kxg5 $14 40. Rd6 Nb4 {With the idea ...b5.} 41. Nxb6 Nxa2 42. Rxe6 {Nd7 is the strong threat.} Kf5 43. Rc6 {Hoping for Kf3.} (43. Rh6 {feels hotter.} Nc3 44. Nd7 Rg8+ 45. Kf3 Ne4 46. Nb6) 43... Ke4 44. Nd7 Rb2+ 45. Kg3 Rc2 $2 {[%mdl 8192]} (45... Nc3 $11 {and Black has nothing to worry.}) 46. Rxc5 $18 Rxc5 $2 (46... Re2 47. Re5+ Kd3 48. Nc5+ Kc4) 47. Nxc5+ Kxe3 48. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} Kd4 49. Kf4 Nc3 50. h5 Ne2+ {Precision: White = 61%, Black = 50%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Zou, Chen"]
[Black "Deepan Chakkravarthy J."]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2291"]
[BlackElo "2520"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,55,25,0,128,128,131,109,130,119,112,88,118,104,113,119,120,99,110,99,94,96,84,90,112,92,89,0,0,0,0,0,754,724]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 a6 7. f3 b5 8. Qd2 Nbd7 9. g4 Nb6 10. a4 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} Nc4 11. Bxc4 bxc4 12. a5 Bb7 13. Na4 {[#] LiveBook: 64 Games} e5 $146 (13... d5 $11 {keeps the balance.}) ({Predecessor:} 13... d5 14. g5 Nd7 15. O-O-O dxe4 16. f4 Rb8 17. Qc3 Qe7 {0-1 (69) Leko,P (2734)-Shirov,A (2718) Eilat 2012}) 14. Nf5 $16 {[%cal Bd4f5,Bf5e3,Be3c4][%mdl 32]} g6 15. Bb6 Qd7 {[#]} 16. Ne3 $1 Bh6 17. Qe2 Bf4 18. Nxc4 h5 {[%cal Rh5g4]} 19. g5 Bxg5 20. Be3 Bh4+ 21. Bf2 Bxf2+ 22. Qxf2 ({Much weaker is} 22. Kxf2 Rd8 $11) 22... Rd8 23. Nab6 $36 {[%mdl 2048] Keeping Black busy.} Qc7 24. Qh4 Nd7 {Black wants to play ...Nxb6.} 25. Nxd7 (25. O-O-O $16 Nxb6 26. Nxb6) 25... Qxc4 $11 26. Nf6+ Kf8 27. Nd5 Kg7 $2 {[%mdl 8192] [#]} (27... Re8 $11 28. Ne3 Qb4+ 29. Ke2 Kg7) 28. Qf6+ {Precision: White = 65%, Black = 77%.} 1-0

[Event "8th HDBank Cup 2018"]
[Site "Hanoi"]
[Date "2018.03.12"]
[Round "4"]
[White "Lu Chan Hung"]
[Black "Krysa, Leandro"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2181"]
[BlackElo "2548"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2018.??.??"]
[EventCountry "VIE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,106,7,4,4,4,-8,-12,-17,-7,-45,-10,-40,-23,-97,-58,-67,-64,-63,-71,-106,-69,-71,-65,-69,-69,-69,-67,-68,-74,-65,-58,-93,-58,-76,-62,-59,-52,-58,-78,-68,-74,-98,-103,-105,-88,-84,-77,-111,-101,-91,-12,-131,-87,-126,-67,-86,-77,-87,-88,-76,-89,-89,-70,-79,-81,-86,-66,-92,-76,-78,0,0,0,0,8,0,0,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. a3 d6 6. Rb1 e6 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} 7. b4 Nge7 {LiveBook: 78 Games} 8. h4 (8. Nf3 O-O 9. O-O b6 10. e3 d5 11. bxc5 bxc5 12. Na4 Qd6 13. d3 Ba6 14. Qc2 Rab8 15. Rxb8 Rxb8 16. cxd5 Nxd5 17. e4 {½-½ (33) Ding,L (2773)-Svidler,P (2755) Moscow 2017}) 8... h6 9. Nh3 Rb8 $146 ({Predecessor:} 9... O-O 10. Nf4 e5 11. Nfd5 cxb4 12. axb4 Nxd5 13. Nxd5 Bg4 {1-0 (38) Tassi,O (2300)-Lapiccirella,M (2243) Porto San Giorgio 2006}) 10. Qa4 O-O 11. Bb2 b6 12. b5 Na5 13. Ne4 (13. Nf4 $11) 13... f5 {[#] aiming for ...Bxb2.} 14. Bxg7 Kxg7 15. Nc3 e5 16. f4 e4 17. d3 exd3 18. exd3 Bb7 19. Qc2 d5 20. cxd5 Nxd5 21. Nxd5 Bxd5 22. Qc3+ Kg8 23. O-O Bxg2 24. Kxg2 Qd5+ 25. Kh2 $1 Rbd8 26. Nf2 Qd4 $36 {[%mdl 2048] Black is on the roll.} 27. Qxd4 Rxd4 28. Rfe1 Kf7 29. h5 gxh5 30. Re5 Kg7 31. Kh3 c4 (31... Ra4 $17 32. Kh4 Rxa3 33. Kxh5 c4) 32. Rb4 (32. Rd1 $11 {remains equal.}) 32... Kf6 33. dxc4 Nxc4 (33... Rd2 $17 34. c5 Nb7) 34. Re2 Rfd8 35. Ra4 Na5 36. Rxd4 Rxd4 $17 {[%mdl 4096] Endgame KRN-KRN} 37. Kh4 Nc4 38. Ra2 Kg6 39. a4 Nd6 40. Kh3 Ne4 41. a5 bxa5 (41... Nf6 $17) 42. Nxe4 $11 {The position is equal.} fxe4 43. Rxa5 $17 {KR-KR} Rd7 44. Kg2 Rd2+ 45. Kf1 Rb2 46. Ke1 Rb3 47. Kf2 Rf3+ 48. Kg2 $1 Rb3 49. Kf2 Kf6 50. Rxa7 h4 51. gxh4 Kf5 52. Rf7+ Kg4 53. Rf6 Rxb5 {Precision: White = 50%, Black = 62%.} 1/2-1/2

