[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Mecking, Henrique"]
[Black "Nery Junior, Jose Antonio"]
[Result "1/2-1/2"]
[ECO "A61"]
[WhiteElo "2597"]
[BlackElo "2134"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,116,57,46,52,50,48,49,78,29,42,22,40,25,27,-7,0,0,0,0,0,1,68,72,75,20,39,0,0,0,0,-45,23,32,46,51,89,70,73,0,0,-1,-1,-1,-1,-2,0,0,0,0,11,11,11,11,11,11,11,11,31,18,81,25,180,180,180,180,181,189,216,196,180,152,146,110,120,120,126,110,110,0,136,141,172,8,8,8,8,8,8,8,8]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Na6 8. e4 Nc7 9. Be2 Bg7 10. O-O O-O 11. a4 Re8 12. f3 b6 13. Nc4 Ba6 14. Bg5 Bxc4 {A79: Benoni (Hauptsystem)} 15. Bxc4 {LiveBook: 6 Partien} a6 16. Qd3 Qc8 {Weiß steht etwas besser.} 17. Bf4 Bf8 {[#]} 18. Bd2 $146 ({Vorgänger:} 18. Rab1 Nd7 19. b4 cxb4 20. Rxb4 Ne5 21. Bxe5 dxe5 22. Rb2 {1-0 (64) Ruban,V (2535)-Filippov,V (2510) Kemerovo 1995}) 18... Rb8 19. Rfe1 Qb7 20. Qc2 b5 21. axb5 axb5 22. Bf1 b4 23. Nd1 {[%cal Bc3d1,Bd1e3,Be3g4][%mdl 32]} Nd7 24. Ne3 Nb6 (24... Nb5 $11) 25. Ng4 $14 Nd7 26. Bh6 (26. Nh6+ $16 Bxh6 27. Bxh6) 26... Nb5 27. Bxb5 (27. Qf2 {is more complex.} Nd4 28. Bf4 Ra8 29. Ne3 Ne5 30. Bxe5 dxe5 31. Nc4) 27... Qxb5 28. Bxf8 Kxf8 29. b3 h5 (29... c4 $1 $15) 30. Ne3 $11 {[#] Und weiter mit Sc4 wäre nett.} Nb6 31. g4 {gxh5 ist eine echte Drohung.} hxg4 32. Nxg4 {Droht stark Db2.} c4 33. bxc4 (33. Qc1 $16 Nd7 34. Qh6+ (34. bxc4 Qc5+ 35. Kg2 b3 $16) (34. Qxc4 Qxc4 35. bxc4 f5 $17) 34... Kg8 35. Ra7) 33... Qxc4 34. Qb2 $132 {[%mdl 2048] Weiss is fighting back} Qc3 35. Qxc3 bxc3 36. Rec1 f5 37. Nf2 fxe4 38. fxe4 Rbc8 39. Ra3 c2 40. Ra2 Nd7 41. Raxc2 Rxc2 42. Rxc2 {[%mdl 4096] Endspiel KTS-KTS} Nc5 43. Rc4 Ra8 (43... Ke7 $11) 44. Kg2 (44. e5 $1 $16) 44... Ra4 $2 (44... Ra2 $11 {und Schwarz steht sicher.} 45. Kf3 Kf7) 45. Rxa4 $18 Nxa4 {KS-KS} 46. Kf3 Nc5 47. Ke3 Ke7 48. Nd3 {[#] zielt auf Sxc5 ab.} Nd7 49. Kf4 Kf6 50. h4 Nb6 51. Nf2 Nc4 52. Nd1 Ne5 53. Nf2 (53. Ne3 $16 Nd3+ 54. Kf3) 53... Nf7 (53... Nc4 $1 $11 {hält das Gleichgewicht.}) 54. Ng4+ $16 Ke7 55. e5 $2 ({Lieber} 55. Ke3 $18) 55... dxe5+ $11 {Die Stellung ist ausgeglichen.} 56. Nxe5 g5+ $1 57. hxg5 Nxg5 58. Kxg5 {Beabsichtigt Sc4 und Matt.} Kd6 {Precision: Weiß = 59%, Schwarz = 47%.} 1/2-1/2

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Supi, Luis Paulo"]
[Black "Rocha, Vitor Firmo De Souz"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2553"]
[BlackElo "2219"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,0,57,16,36,43,36,29,31,31,44,30,26,0,92,79,83,80,69,67,55,53,64,54,95,87,92,100,129,126,132,133,125,124,129,136,140,139,126,131,153,153,167,135,1742,1689,29988,29989,29989,29990,29993,29993,29993,29994]} 1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 5. g3 Ne7 6. Bg2 O-O 7. O-O f5 {LiveBook: 8 Games} (7... Bc7 $11) 8. c4 {B10: Caro-Kann: 2 d3 and 2 c4} (8. exd5 cxd5 9. c4 e4 10. Nd4 Nbc6 11. Nxc6 bxc6 12. cxd5 cxd5 13. dxe4 fxe4 14. Nb3 Ba6 15. Re1 Bd3 {0-1 (60) Heberla,B (2487)-Pantsulaia,L (2609) playchess.com INT 2006}) 8... dxe4 9. dxe4 f4 10. c5 {White is slightly better.} Bc7 $146 ({Find the theoretical novelty and annotate with similar games:} 10... Bxc5 11. Qb3+ Kh8 12. Nxe5 fxg3 13. Nf7+ Rxf7 14. Qxf7 gxf2+ 15. Kh1 Qg8 16. Qxg8+ Kxg8 17. Nb3 Bb6 18. Bg5 Ng6 19. Rad1 Bg4 20. Rd2 {1-0 (20) Eidelson,R (2307)-Dudzinski,P (2090) Polanica Zdroj 2001}) 11. b4 Ng6 12. Bb2 Be6 13. h4 Nd7 (13... h6 $11 {keeps the balance.}) 14. Ng5 $16 Qe7 15. Nxe6 Qxe6 16. Kh2 Nf6 17. Bh3 Qf7 18. Qe2 $36 {[%mdl 2048] White has the initiative.} Rad8 19. Nf3 {Threatens to win with Ng5.} h6 20. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Nh7 {[#]} 21. Rg1 $1 Rfe8 22. g5 {aiming for gxh6.} h5 23. Qc2 Nhf8 24. Bf1 Kh8 25. Bc4 Ne6 26. Rad1 Qe7 27. Qe2 Rf8 28. Rxd8 Bxd8 $4 {[%mdl 8192] [#]} (28... Rxd8 $16 29. Rd1 Rxd1 30. Qxd1 Qe8) 29. Nxe5 $18 Nxe5 30. Qxh5+ {White mates.} Kg8 31. Bxe5 Re8 32. Rd1 f3 33. Rd6 {Precision: White = 82%, Black = 49%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Matsuura, Everaldo"]
[Black "Bueno, Alfeu Junior Varela"]
[Result "1-0"]
[ECO "A89"]
[WhiteElo "2492"]
[BlackElo "2271"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,147,65,72,42,42,14,29,22,78,81,86,79,111,108,140,110,115,72,74,62,75,72,127,116,182,177,314,196,299,189,199,167,158,168,169,178,212,162,157,166,158,166,172,169,170,175,170,164,170,163,164,135,162,155,155,154,201,187,199,199,212,178,197,160,160,36,154,136,140,130,129,127,121,75,75,64,75,66,84,74,74,0,82,84,84,83,80,77,83,80,97,96,87,22,22,0,37,22,27,33,99,81,85,107,120,124,123,124,124,124,123,124,345,345,345,345,329,329,329,282,4602,4562,2250,1800,1454,1439]} 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 O-O 6. Nf3 d6 7. O-O Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. Qb3 a6 11. c5 Kh8 12. Rd1 {A89: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 Nc6} h6 {LiveBook: 38 Games} (12... Rb8 13. Qa3 h6 14. b3 g5 15. Bb2 Qe8 16. d6 exd6 17. cxd6 cxd6 18. Rxd6 Qh5 19. Rad1 {1-0 (29) Bacrot,E (2689)-Shabalov,A (2563) London 2016}) 13. Qa3 g5 $146 ({Predecessor:} 13... Rb8 14. Bd2 g5 15. Be1 Qe8 16. Qa5 b6 17. cxb6 cxb6 18. Qa3 b5 19. Qb4 Bb7 20. a4 bxa4 21. Qxa4 {0-1 (34) Shneider,A (2535)-Danner,G (2455) Berlin 1994}) 14. d6 {And now c6 would win.White is slightly better.} exd6 15. cxd6 cxd6 (15... c6 $11 {remains equal.}) 16. Rxd6 $16 Qe8 17. Be3 f4 18. Bc5 Qh5 19. Nd5 {Threatens to win with Nxf6.} Nxd5 20. Rxd5 Re8 21. Qd3 Bg4 22. Re1 Rac8 (22... Qf7 $142) 23. Be4 $1 Rc6 (23... Qh3 $16) 24. Bd6 $18 {aiming for Bg6.} Re6 (24... Rec8 {keeps fighting.} 25. Bxe5 Bxe5) 25. Bb4 {Black must now prevent f3.} Rc8 (25... Re8 {might work better.} 26. Rd8 Rc8 27. Rxc8 Rxc8) 26. Bc3 Qe8 27. f3 Bh5 28. Rd1 Bf7 29. Bf5 Bg6 30. Bxg6 Qxg6 31. Qxg6 Rxg6 32. Rd8+ $1 Rxd8 33. Rxd8+ {[%mdl 4096] Endgame KRB-KRB} Kh7 34. Rd7 Re6 35. Rxb7 Kg6 36. Kf2 Bf8 37. Bb4 Bxb4 38. Rxb4 $16 {KR-KR} Rc6 39. Ra4 Kf5 40. g4+ Ke6 41. Ra5 Rd6 42. Ke1 Kf6 43. Ra3 Rb6 44. Rb3 ({White should play} 44. b3 $16) 44... Rd6 (44... Rxb3 $14 45. axb3 Ke6) 45. Rd3 Rb6 46. b3 e4 47. fxe4 Ke5 48. Kd2 Kxe4 49. Rd8 Re6 50. h3 Rc6 51. Re8+ Kd4 52. Rd8+ Ke4 $1 53. b4 Rb6 54. a3 Rc6 55. Rd7 Re6 56. Rd3 Rc6 57. Rb3 Rd6+ {[#]} 58. Kc2 (58. Ke1 $1 $16) 58... Rc6+ $1 $11 59. Kb1 Rd6 60. Kc1 Rc6+ 61. Kd1 Rd6+ {[#]} (61... Kd5 $14) 62. Ke1 $1 $16 Rc6 63. Kf2 Rd6 64. a4 {[%cal Ba3a4,Ba4b5,Bb5b6][%mdl 32]} Rb6 65. b5 {Hoping for a5.} Kd5 66. e3 Kc4 67. Rb1 {exf4 is the strong threat.} axb5 $2 (67... fxe3+ $16 68. Kxe3 Re6+ 69. Kf3 Kc5) 68. axb5 $18 fxe3+ 69. Kxe3 Kc5 70. Ke4 Kd6 71. Kd4 Rb8 $2 (71... Kc7 72. Rb3 Rd6+ 73. Ke4 Rb6) 72. b6 {White is clearly winning.} Rb7 73. Rb3 Kc6 74. Ke5 {Precision: White = 68%, Black = 39%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Santos, Marcus Vinicius Mor"]
[Black "Brito, Luismar"]
[Result "0-1"]
[ECO "E42"]
[WhiteElo "2402"]
[BlackElo "2302"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,85,5,5,13,25,12,6,29,31,39,10,1,10,32,37,32,0,24,21,26,19,12,10,24,25,64,32,46,45,38,36,40,15,17,12,22,0,0,0,0,-12,0,-20,87,24,69,0,0,-181,-175,-174,-169,-149,-157,-259,-283,-295,-26,-318,-327,-431,-426,-1127]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 O-O 9. Be3 Nc6 10. cxd5 Nxd5 11. Nfxd5 exd5 12. Bd3 Be6 13. O-O {LiveBook: 4 Games} Qd7 {E42: Nimzo-Indian: Rubinstein: 4...c5 5 Ne2} (13... Bf6 14. Rc1 Na5 15. b4 Nc6 16. Na4 Qd6 17. Nc5 Bc8 18. Qd2 a5 19. b5 Nxd4 20. Bxd4 Bxd4 21. Bxh7+ Kxh7 22. Qxd4 {½-½ (67) Oll,L (2630)-Timman,J (2649) Belgrade 1999}) 14. Rc1 $146 ({Find the theoretical novelty and annotate with similar games:} 14. Ne2 Bf5 15. Bxf5 Qxf5 16. Qd2 Rac8 17. Rac1 Bd8 18. b4 a6 19. Nc3 Be7 20. Qa2 Rcd8 21. Qc2 {½-½ (29) Iagar,R (2141)-Toranzo Fernandez,D (2045) Galapagar 2009}) 14... Rac8 15. Na4 Bf6 {The position is equal.} 16. Nc5 Qe7 17. Bb1 ({Much worse is} 17. Qh5 g6 $17) 17... b6 18. Nxe6 fxe6 19. Rc3 g6 20. Qc2 Qd6 21. Rc1 {[%cal Rc3c6,Bf1c1,Bc1c3,Bc3c5][%mdl 32]} Ne7 22. Qa4 Rxc3 23. Rxc3 e5 {Threatens to win with ...exd4.} 24. g3 b5 25. Qd1 e4 26. Rc5 a6 27. Ba2 Rd8 28. Qg4 Kg7 29. Bf4 Qd7 30. Qd1 Qe6 31. Qd2 Nf5 {[%cal Be7f5,Bf5h4,Bh4f3][%mdl 32]} 32. Be3 h5 33. h4 Bxh4 (33... Rd7 $11 {keeps the balance.}) 34. gxh4 $16 Nxh4 35. Bh6+ (35. Qc3 $1 $14) 35... Kh7 $1 $11 {aiming for ...Qh3.} 36. Qf4 $2 (36. Rc7+ $1 $11 Rd7 37. Rxd7+ Qxd7 38. Qf4) 36... Nf3+ $19 37. Kg2 {[#]} g5 $1 {[%cal Rg5f4]} 38. Bxg5 Nxg5 39. Rc7+ {[#]} ({Avoid the trap} 39. Qxg5 $2 Rg8 $19) (39. Qh4 $17 Kh6 40. Qf4) 39... Kg6 $1 {( -> ...Qh3+)} 40. Qg3 Qd6 $2 (40... Rf8 $19 {And now ...Rf3 would win.} 41. Rc3 Rf5) 41. Qxd6+ $4 {[%mdl 8192]} (41. Rc5 $1 $11 {and White is okay.}) 41... Rxd6 42. Rc5 Ne6 43. Rxd5 {Precision: White = 47%, Black = 50%.} (43. Rc1 $142) 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Toth, Christian Endre"]
[Black "Macedo, Maximo Iack"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2348"]
[BlackElo "2358"]
[Annotator "RC"]
[PlyCount "57"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:41]} 2. Bf4 {[%emt 0:00:00]} d5 {[%emt 0:05:13]} 3. e3 {[%emt 0:00:00]} c5 {[%emt 0:00:25]} 4. c3 {[%emt 0:00:01]} Nc6 {[%emt 0:00:19]} 5. Nd2 {[%emt 0:00:05]} e6 {[%emt 0:03:30]} 6. Ngf3 {[%emt 0:00:26]} Bd6 {[%emt 0:00:31]} 7. Bg3 {[%emt 0:00:08]} O-O {[%emt 0:03:39]} 8. Bb5 {[%emt 0:00:18]} a6 {[%emt 0:02:47]} 9. Bxc6 {[%emt 0:01:00]} bxc6 {[%emt 0:00:05]} 10. Qa4 {[%emt 0:00:35]} Rb8 {[%emt 0:14:13]} 11. Bxd6 {[%emt 0:14:57]} Qxd6 {[%emt 0:00:11]} 12. Qa3 {[%emt 0:00:08]} Rb5 {[%emt 0:07:49]} 13. Nb3 {[%emt 0:01:28]} Qb8 {[%emt 0:06:27]} 14. Nxc5 {[%emt 0:07:01]} Rxb2 {[%emt 0:02:10]} 15. O-O {[%emt 0:00:58]} Qb5 {[%emt 0:05:27]} 16. Ne5 {[%emt 0:04:54]} Qe2 {[%emt 0:07:36]} 17. h3 {[%emt 0:10:49]} g5 {[%emt 0:11:36]} 18. Qa4 {[%emt 0:14:29]} Nh5 {[%emt 0:07:15]} 19. Rae1 {[%emt 0:11:25]} Qd2 {[%emt 0:15:02]} 20. Nf3 {[%emt 0:00:16]} Qxc3 {[%emt 0:00:30]} 21. Rc1 {[%emt 0:00:50]} Qb4 {[%emt 0:00:41]} 22. Qxb4 {[%emt 0:00:18]} Rxb4 {[%emt 0:00:05]} 23. Nxg5 {[%emt 0:00:14]} Ng7 {[%emt 0:02:28]} 24. Rb1 {[%emt 0:01:30]} Rc4 {[%emt 0:00:58]} 25. Rfc1 {[%emt 0:01:14]} Rxc1+ {[%emt 0:00:36]} 26. Rxc1 {[%emt 0:00:01]} f6 {[%emt 0:01:30]} 27. Nf3 {[%emt 0:00:07]} Rf7 {[%emt 0:01:23]} 28. Rb1 {[%emt 0:00:10]} Rc7 {[%emt 0:00:28]} 29. Rb6 {[%emt 0:03:12]} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Martins, Vinicius Tine"]
[Black "Proudian, Armen"]
[Result "1/2-1/2"]
[ECO "E44"]
[WhiteElo "2287"]
[BlackElo "2423"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,106,27,2,8,-36,-47,-43,-35,-57,-88,-83,-33,-37,-37,-31,-14,-68,-56,-62,-35,-29,3,0,3,3,3,3,6,6,8,0,4,0,30,13,29,26,6,6,118,113,114,114,104,112,106,115,114,85,87,70,151,163,210,202,201,184,447,211,365,364,437,432,459,456,383,273,1152,446,484,277,277,237,242,0,188,8,8,8,8,8,8,8,8,8,8,2,2,2,2,8,9,8,8]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Bb7 6. a3 Be7 7. d5 O-O 8. g3 b5 {E44: Nimzo-Indian: Rubinstein: 4...b6 5 Ne2} 9. Nxb5 exd5 10. Bg2 {[%cal Rc4d5]} c6 {Black is slightly better.} 11. Nbc3 {[%cal Rc4d5]} dxc4 12. e4 $146 ({Predecessor:} 12. O-O Na6 13. e4 Nc5 14. Nd4 Re8 15. e5 Nd5 16. Nf5 {0-1 (49) Blasco Marques,S (2200)-Suba,M (2565) Collado Villalba 1996}) 12... d5 13. O-O Na6 {[%cal Bb8a6,Ba6c5,Bc5d3][%mdl 32]} 14. exd5 cxd5 15. Bg5 (15. Nf4 $11) 15... Nc5 $15 16. Rb1 Nfe4 17. Be3 $1 Nd3 18. b3 $1 {[%cal Rb3c4] Black must now prevent bxc4.} Nxc3 19. Nxc3 {Threatens to win with bxc4.} d4 $1 20. Bxb7 dxe3 21. fxe3 Rb8 $1 {[%cal Rb8b7]} 22. bxc4 Bxa3 23. Bd5 Ne5 24. Qd4 Rxb1 25. Rxb1 Nd7 26. Ne4 $36 {[%mdl 2048] White is more active.} Qa5 (26... Nb6 $11) 27. Ra1 Qb4 28. Qxa7 Bb2 29. Rf1 Nf6 30. Nxf6+ Bxf6 31. Qd7 Qc3 32. e4 h5 (32... g6 $14 33. Kg2 Kg7) 33. Kg2 $16 h4 34. gxh4 Qd2+ 35. Rf2 Qh6 $2 {[#]} (35... Qe3 36. Qf5 Qh6) 36. c5 (36. e5 $142 $1 Bd8 (36... Bxe5 37. Bxf7+) 37. Bxf7+ Kh8 38. Qd6) 36... Kh8 $2 (36... Qg6+ 37. Kh1 Rd8) 37. c6 $18 Qg6+ 38. Kh3 {And now c7 would win.} Qh6 {[#]} 39. Qg4 $1 {aiming for c7.} Be5 40. Qg5 f6 $2 {[#]} (40... Qxg5 41. hxg5 g6) 41. Qxh6+ (41. Qxe5 $142 $1 {[%mdl 512]} fxe5 42. Rxf8+ Kh7 43. c7 Qe3+ 44. Kg4 Qe2+ 45. Kf5 Qf2+ 46. Ke6 Qxf8 47. Kd7) 41... gxh6 {[%mdl 4096] Endgame KRB-KRB} 42. Ra2 (42. Kg4 $142) 42... h5 43. Ra7 Rb8 44. Ra2 $2 (44. Bf7 $18) 44... Kg7 $2 (44... Rf8 $1 $11) 45. c7 $2 (45. Kg2 $18) 45... Rc8 $1 $11 {The position is equal.} 46. Rg2+ Kh6 47. Rc2 (47. Be6 {seems wilder.} Rxc7 48. Ra2 Rh7 49. Bf5 Rb7 50. Rc2) 47... Rxc7 48. Rxc7 Bxc7 {KB-KB} 49. Bf7 Ba5 50. Kg3 Be1+ 51. Kf4 Bxh4 52. Kf5 Bg5 53. h3 Bh4 {Precision: White = 53%, Black = 46%.} 1/2-1/2

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Bouwman, Marcelo Wanderley"]
[Black "Mekhitarian, Krikor Sevag"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2247"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,86,0,0,0,-3,-3,0,0,0,0,0,-38,-30,-56,-59,-179,-56,-61,-60,-68,-71,-104,-89,-188,-187,-191,-113,-108,-104,-159,-152,-145,-145,-127,-138,-272,-287,-290,-291,-396,-397,-533,-530,-583,-585,-595,-601,-571,-558,-604,-454,-661,-649,-733,-758,-841,-832,-799,-794,-779,-706,-676,-610,-727,-664,-1635,-5335,-4962,-4970,-2008,-1511,-12836,-12770]} 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 Be7 7. Nge2 Nc6 8. O-O O-O {LiveBook: 16 Games} 9. h3 {B24: Closed Sicilian: 3 g3 sidelines} (9. Bg5 d4 10. Bxf6 Bxf6 11. Ne4 Be7 12. Nf4 Re8 13. Re1 Bf8 14. a3 Bd7 15. Nd5 Re5 16. Nd2 Rxe1+ 17. Qxe1 {½-½ (27) Orlov,A (2521)-Fridman,R (2457) Netherlands 2009}) 9... d4 10. Ne4 Nd5 11. c4 {The position is equal.} dxc3 12. bxc3 $146 ({Predecessor:} 12. N2xc3 Ndb4 13. Qh5 g6 14. Qh6 Be6 15. Ng5 Bxg5 16. Bxg5 {½-½ (26) Kosmac,B (2195)-Kovac,B (2224) Slovenia 2016}) 12... Re8 13. f4 f5 14. Nf2 Bf6 15. Qb3 (15. Rb1 $15) 15... Rxe2 ({Black should try} 15... Be6 $19 16. Qxb7 Qd6) 16. Bxd5+ $15 Kh8 {[#] And now ...Bxc3! would win.} 17. Bf3 Re7 18. Bd2 Be6 19. Qa4 (19. Qc2 $17) 19... Bd5 $19 20. Qd1 {[#]} Bxf3 (20... b5 $1 $19 {[%cal Rb5b4] Hoping for ...b4.} 21. Re1 Rxe1+ 22. Bxe1 b4) 21. Qxf3 $17 Qa5 $36 {[%mdl 2048] Black is in control.} 22. Qd5 (22. Rfe1 $142) 22... Re2 23. Be1 Bxc3 24. Bxc3 Qxc3 25. Rab1 (25. Rac1 $17 Qd4 26. Qxd4 Nxd4 27. Rxc5) 25... Rd8 $19 26. Qxf5 b6 27. Rbc1 Qd2 28. Rcd1 Qe3 {Black is clearly winning.} 29. Qg4 Nd4 30. Kg2 Rf8 31. h4 h6 32. h5 Re8 33. Rb1 (33. a4 $142) 33... Qxd3 34. Rbd1 Qe3 35. f5 Re4 36. Rxd4 Qxd4 37. Qf3 Re8 38. Kh3 Qe3 39. Qc6 Rf8 40. f6 Rxf6 41. Qc8+ Qe8 42. Qxe8+ Rxe8 43. g4 Re2 {Precision: White = 21%, Black = 76%.} 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.06"]
[Round "1.1"]
[White "Abrantes, Tiago Garrido"]
[Black "Fier, Alexandr"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2158"]
[BlackElo "2557"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,80,5,25,-18,8,-22,-21,-29,-25,-23,-15,-16,-12,-71,-64,-76,-24,-26,-32,-38,-41,-101,-93,-268,-275,-261,-271,-260,-274,-274,-274,-270,-266,-254,-260,-343,-340,-384,-372,-372,-372,-375,-367,-375,-373,-370,-365,-374,-374,-373,-362,-399,-401,-431,-411,-449,-441,-497,-493,-513,-508,-497,-484]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Nb3 Qc7 8. O-O Bb7 9. a3 Nf6 {B43: Sicilian: Kan Variation: 5 Nc3} 10. Qe2 d6 {LiveBook: 22 Games} 11. Bg5 Nbd7 {The position is equal.} 12. Rad1 Be7 13. Kh1 h6 14. Bh4 g5 15. Bg3 h5 $36 {[%mdl 2048] [#] Hoping for ...h4. Black has some pressure.} 16. h4 $146 (16. h3 $11 {remains equal.}) ({Predecessor:} 16. h3 h4 17. Bh2 {0-1 (33) Nyi Nyi,L (2219)-Yu,Y (2652) Jakarta 2011}) 16... gxh4 $17 17. Bxh4 Rg8 (17... Ng4 $17 18. Bg3 Nge5) 18. f3 $11 Rd8 19. Qe1 Ne5 20. a4 {[#]} ({Better is} 20. f4 $15 Nc4 21. f5) 20... bxa4 $1 $17 21. Nxa4 $2 (21. Nd4 $17 {was necessary.}) 21... Nxd3 $19 22. Rxd3 Qxc2 {[%csl Gg8][%cal Rc2g2]} 23. Qd2 Qxd2 24. Nxd2 Nxe4 25. Nxe4 Bxe4 ({Don't play} 25... Bxh4 26. Nxd6+ Ke7 27. Rfd1 $19) 26. fxe4 {Threatens to win with Bxe7.} Bxh4 27. Rc1 Rg4 28. Rc6 Rxe4 29. Rxa6 Bf6 30. Kg1 Be5 31. Nc3 Rb4 32. Rd2 Rdb8 33. Ra2 d5 34. Re2 Bd4+ 35. Kh2 Kf8 36. g3 Rb3 37. Nd1 Kg7 {Black is clearly winning.} 38. Kg2 Rd3 39. Nf2 Bxf2 40. Rxf2 Rbb3 {Precision: White = 28%, Black = 86%.} 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Fier, Alexandr"]
[Black "Abrantes, Tiago Garrido"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2557"]
[BlackElo "2158"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,161,39,6,128,98,122,99,104,110,108,102,185,183,191,129,129,128,141,148,148,113,156,158,149,147,171,135,141,119,112,109,123,124,140,122,122,122,122,122,135,120,137,134,172,165,199,159,172,181,184,159,159,159,194,189,194,163,181,172,189,162,162,149,149,155,131,101,110,74,101,62,66,64,78,75,152,170,128,69,139,135,287,177,184,121,139,70,123,106,137,106,106,106,106,106,106,-11,86,68,76,68,109,0,22,8,8,8,25,11,70,70,114,107,286,266,300,281,380,375,368,365,352,351,300,301,1354,1354,1599,1525,1382,969,29975,29977,29986,29987,29984,29973,29973,29974,29974,29975,29974,29975,29976,29971,29965,9677,29988,29989,29989,29990,29991,29992]} 1. d4 c5 2. e4 cxd4 3. Nf3 e5 4. c3 dxc3 (4... Nc6 5. cxd4 exd4 6. Nxd4 Nf6 7. Nc3 Bb4 8. Nxc6 bxc6 9. Bd3 O-O 10. O-O Re8 11. Qc2 Bc5 12. h3 d6 13. Re1 Rb8 14. Bf4 Nh5 15. Be3 Bxe3 16. Rxe3 Qg5 {1-0 (76) Noble,M (2552)-Staniszewski,J (2509) ICCF email 2012}) 5. Nxc3 d6 6. Bc4 {LiveBook: 5 Partien. Weiss will Dd5 spielen. B21: Sizilianisch (Morra-Gambit 2.d4 und 2.f4)} Be7 (6... Nc6 $1 $11 {hält das Gleichgewicht.}) 7. Qb3 $16 Be6 8. Bxe6 {Weiß steht besser.} fxe6 9. Qxe6 Qd7 10. Qb3 Na6 (10... Nc6 $16) 11. Be3 $18 Nh6 $146 ({Vorgänger:} 11... Nf6 12. O-O h6 13. Rfe1 Ng4 14. Rac1 Nxe3 15. fxe3 Nc5 16. Qc4 Qe6 17. Nd5 Rc8 18. b4 Qg4 19. Qb5+ {1-0 (19) Malakhevich,E (2129)-Vyatkin,D (2162) Dagomys 2004}) 12. h3 ({Günstiger ist} 12. Bxh6 $18 Nc5 13. Qc4 gxh6 14. Rd1) 12... Nf7 $16 13. Rd1 Qc6 14. Nd5 Bd8 15. O-O O-O 16. Rc1 Qd7 17. Rfd1 {Sxe5! ist eine echte Drohung.} Kh8 18. a4 b6 19. Qc2 Nc5 20. a5 Qa4 21. axb6 Bxb6 22. Bxc5 Qxc2 23. Rxc2 Bxc5 24. b4 Bb6 25. Rc6 Rac8 26. Rdc1 Rxc6 27. Rxc6 Rb8 28. Nd2 Bd4 29. Nb3 Bb6 30. Kf1 Kg8 31. Nd2 Bd4 32. Nc4 Rd8 33. f3 Kf8 34. Na5 Ke8 35. Nb7 Rd7 36. Rc8+ Nd8 37. Nc7+ Ke7 38. Na5 Kf7 39. Nc4 Ne6 40. Nd5 Nf4 $1 41. Na5 Nxd5 42. exd5 $14 {[%mdl 4096] Endspiel KTL-KTS} g6 (42... Kg6 $142) 43. Ke2 $16 Bb6 44. Nc6 (44. Kd3 $16) 44... h5 (44... Kf6 $14) 45. Kd3 Rb7 $2 (45... Kf6 $16 {kämpft weiter.}) 46. Rh8 Kf6 47. h4 (47. Re8 $18) 47... Rd7 48. Ke2 (48. Kc4 $16) 48... Rf7 (48... Kg7 $14 49. Re8 Rf7) 49. Re8 {Und weiter mit Te6+ wäre nett.} Rd7 50. Re6+ Kf7 51. g4 Bd8 52. gxh5 gxh5 53. Rh6 ({Weiss kommt nicht vorbei an} 53. Nxd8+ $16 Rxd8 54. Kd3) 53... Bxh4 (53... Kg7 $1 $11 54. Re6 (54. Rxh5 $2 Bf6 $19) 54... Bxh4) 54. Rxh5 Bf6 55. Rh1 Kg6 56. Ke3 (56. Ra1 $16 Rb7 57. Rxa7) 56... Bd8 57. Rh8 Bb6+ 58. Ke2 Kf6 59. Re8 Kf7 (59... Kg5 $11) 60. Re6 $14 Bg1 61. Kd3 Bf2 $2 {[#]} (61... Bb6 $16 {war einen Versuch wert.}) 62. Ke4 $1 $18 Kg7 {[#]} 63. Ne7 $1 Be1 64. Nf5+ Kf8 65. Nxd6 Bxb4 66. Nc4 ({Weniger gut wäre} 66. Kxe5 Bc3+ 67. Ke4 a5 $16) 66... a5 67. Ra6 ({Nicht} 67. Nxe5 Rd6 $14) ({Schwächer ist} 67. Kxe5 Bc3+ 68. Ke4 Re7 $16) (67. Rxe5 a4 $14) 67... Rf7 $2 (67... Kg7 68. Nxe5 Rd8) 68. Nxe5 Rc7 69. d6 Rc1 70. d7 Re1+ 71. Kf5 Be7 72. Ra8+ Kg7 73. d8=Q Bxd8 74. Rxd8 {KTS-KT} Rb1 75. Rd7+ Kg8 76. Ra7 Rb5 77. f4 {[%cal Bf3f4,Bf4f5][%mdl 32]} Kf8 78. Kg4 (78. Ke6 $142 Rb6+ 79. Kd5 Ke8 80. Nc4 Rb8 81. f5 Rd8+ 82. Nd6+ Kf8 83. Ke6) 78... Kg8 79. Ng6 {Weiß setzt Matt.} a4 80. f5 Rb4+ 81. Kg5 {Precision: Weiß = 67%, Schwarz = 33%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Mekhitarian, Krikor Sevag"]
[Black "Bouwman, Marcelo Wanderley"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2529"]
[BlackElo "2247"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,79,67,37,61,-38,-40,-43,-34,-48,-22,-32,-18,-23,95,-24,-18,-16,-31,-33,-36,-27,-21,-61,-47,-57,-43,-62,-32,-65,0,0,47,0,0,0,0,0,0,0,153,0,0,0,54,55,475,459,880,881,935,928,952,949,928,924,1834,1825,2064,1990,2897,2489,6336,5509,5509,5509,5910,5509]} 1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. c4 d5 5. O-O Bd6 6. d3 c6 7. Nc3 Bc7 {A10: Abarten von Holländisch, Damenindisch, Königsindisch (ohne d2-d4)} 8. e4 {LiveBook: 3 Partien} d4 9. Ne2 (9. e5 $14 dxc3 10. exf6 cxb2 11. Bxb2 gxf6 12. d4) 9... fxe4 $15 {Schwarz steht etwas besser.} 10. dxe4 {Und weiter mit e5 wäre nett.} e5 11. Ne1 Be6 $146 ({Vorgänger:} 11... Qe7 12. Nd3 O-O 13. f4 Nbd7 14. b3 exf4 15. Bxf4 Bxf4 16. Nexf4 {½-½ (31) Kreisl,R (2406)-Schroll,G (2388) Austria 2012}) 12. b3 c5 13. Nd3 Qe7 {[#]} (13... Nbd7 $11 {hält das Gleichgewicht.}) 14. f4 (14. Nef4 $1 $16) 14... Nc6 $11 15. fxe5 Nxe5 16. Nef4 Bg4 17. Qc2 O-O 18. Bd2 g5 19. Nxe5 Bxe5 ({Nur nicht} 19... Qxe5 $2 20. Nd3 $18) 20. Nd3 h6 21. Rae1 Rf7 (21... Nd7 $15) 22. b4 b6 23. bxc5 bxc5 24. Qa4 Raf8 25. Qc6 Rc8 26. Qa6 $1 {Schwarz muss nun Tf5! beachten.} Rc7 $2 {[#]} (26... Rb8 $11) 27. Bc1 $2 (27. Ba5 $1 $16) 27... Bc8 28. Qa5 Qd6 (28... Ng4 $11) 29. Ba3 $14 {[%cal Ra3c5]} Bxg3 $2 {[%mdl 8192]} (29... Nd7 $14) 30. hxg3 $18 {Weiß steht klar auf Gewinn.} Qxg3 (30... Ng4 $142 31. Rxf7 Kxf7 32. Rf1+ Kg7) 31. Rf3 Qh4 {[#]} 32. Rxf6 $1 {[%mdl 512]} Qg3 (32... Rxf6 33. Qxc7) 33. Rxf7 Rxf7 34. Qd8+ Rf8 35. Qd5+ Kh7 36. Bxc5 Bh3 37. e5 {[%cal Be4e5,Be5e6][%mdl 32]} Rf5 38. Qe4 Kg7 39. e6 {Weiss will mit e7 Matt setzen.} Rxc5 40. Nxc5 {Precision: Weiß = 57%, Schwarz = 19%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Proudian, Armen"]
[Black "Martins, Vinicius Tine"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2423"]
[BlackElo "2287"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,107,0,-3,0,-4,0,-1,0,-7,0,-15,0,-16,0,-6,0,-10,-13,-12,-7,-12,-7,-21,-20,-15,-15,-15,-11,-13,-13,-18,0,-20,-21,-21,-10,-23,-11,-23,-4,-37,0,0,0,0,0,0,0,-13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-112,-112,-112,-112,-119,-112,-136,-5,-5,-5,-5,-5,-5,-5,-5,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O Nd4 6. Nxd4 Bxd4 7. c3 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} Bb6 8. Nd2 c6 9. Ba4 O-O 10. Re1 {LiveBook: 3 Games} d5 {White should prevent ...Ng4.} 11. h3 dxe4 $146 ({Predecessor:} 11... Bc7 12. Qf3 Ne8 13. Nf1 f5 14. exd5 cxd5 {1-0 (30) Bogdanovich,S (2590)-Almasi,Z (2689) Berlin 2015}) 12. dxe4 Qe7 13. Qf3 Be6 14. Nf1 Nd7 15. Ng3 Qf6 16. Qxf6 Nxf6 ({But not} 16... gxf6 17. Bh6 $16) 17. Bb3 Bxb3 18. axb3 g6 19. Bh6 Rfd8 20. Red1 Ne8 21. Kf1 Rxd1+ 22. Rxd1 Rd8 23. Rxd8 Bxd8 $11 {[%mdl 4096] Endgame KBN-KBN} 24. Ke2 f6 25. Kd3 Bb6 26. f3 Nc7 27. Bd2 Ne6 28. Nf1 Kf7 29. g3 Bg1 30. b4 b5 31. h4 h5 32. Ke2 f5 33. Be1 fxe4 34. fxe4 Bb6 35. Nd2 g5 36. hxg5 Nxg5 37. Nf3 Nxf3 38. Kxf3 {KB-KB} Kg6 39. g4 a6 40. Bg3 Bc7 41. Bh4 Bb6 42. Be7 hxg4+ 43. Kxg4 Be3 44. b3 {[#]} (44. Kf3 $11 {keeps the balance.} Bc1 45. Bh4) 44... Bc1 $1 $17 45. Bd6 Kf6 46. Kf3 Bb2 47. c4 {[#]} Ba3 ({Better is} 47... bxc4 $1 $17 48. bxc4 Ba3) 48. cxb5 $1 $11 {The position is equal.} cxb5 49. Bc5 {[#]} a5 $1 {[%mdl 512]} 50. Kf2 (50. bxa5 Bxc5) 50... Ke6 51. Ke3 Bxb4 52. Bxb4 axb4 53. Kf3 Kd6 54. Ke3 {Precision: White = 52%, Black = 67%.} 1/2-1/2

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Macedo, Maximo Iack"]
[Black "Toth, Christian Endre"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2358"]
[BlackElo "2348"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,111,19,9,7,6,29,18,21,0,19,16,19,-3,8,-33,-32,-33,0,-5,0,-5,-15,-30,0,0,0,0,0,0,12,0,0,0,23,0,0,0,0,0,0,0,21,18,27,-70,-80,-81,-26,-59,61,61,60,55,54,58,62,72,71,60,48,33,29988,29989,29991,29988,29988,29989,29989,29990,29990,29984,29973,29957,29985,29986,29986,29987,29987,29988,29988,29989,29989,29990,29990,29991,29995,29996]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O b6 13. Rad1 Bb7 14. Rfe1 Rc8 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5} 15. Bd3 (15. Bb3 Re8 16. Re3 Nf6 17. Qd3 b5 18. d5 exd5 19. e5 Ne4 20. Qxb5 Qb6 21. Qxb6 axb6 22. h4 {½-½ (35) So,W (2788)-Dominguez Perez,L (2739) Saint Louis 2017}) 15... Qf6 16. e5 Qe7 {[#] The position is equal.} 17. Qf4 $146 ({Predecessor:} 17. Ng5 h6 18. Ne4 Bxe4 19. Bxe4 Rfd8 20. f4 g6 21. Qf2 Nf8 22. g3 {½-½ (59) Van Wely,L (2666)-Macieja,B (2636) Wolvega 2010}) 17... Bxf3 18. Qxf3 Rfd8 19. Bb1 Nf8 20. g3 Qb4 21. Re4 Qb2 22. Kg2 Rc1 {[#] White must now prevent ...Qxb1.} 23. Rxc1 Qxc1 24. Qd3 Rc8 25. Re2 Rc3 26. Qe4 a5 27. Bd3 Qa3 28. Bb5 Qb4 29. a4 h6 30. f4 Rc1 31. Qd3 Rc3 $36 {[%mdl 2048] White is under pressure.} 32. Qd1 Rb3 33. Rc2 Rb1 34. Qd2 Qb3 35. Bc4 ({White should try} 35. Kh3 $11) 35... Qxa4 $15 36. d5 exd5 ({Better is} 36... Rb4 $17 37. Qc3 exd5 38. Bxd5 Qd7) 37. Bxd5 $11 Qb4 (37... Qd7 $15) 38. Qxb4 $14 Rxb4 {[%mdl 4096] Endgame KRB-KRN} 39. Rc7 Ne6 40. Rc8+ {[%mdl 1024] White has compensation.} Kh7 41. f5 Rb2+ 42. Kf1 Nd4 43. g4 Rb5 $2 {[%mdl 8192] [#]} ({Not} 43... Rxh2 $2 44. Bxf7 h5 45. e6 $18) (43... h5 $14) 44. Bxf7 {[%csl Gf5][%cal Rf7g6] White mates.} h5 45. h4 Rb1+ 46. Kf2 Rb2+ 47. Ke3 Nc2+ 48. Ke4 Rb4+ 49. Kd3 Ne1+ 50. Kc3 Rxg4 51. Bg6+ Rxg6 52. fxg6+ Kxg6 53. Rf8 Ng2 54. e6 Ne3 55. Kd4 Nc2+ 56. Ke4 {Precision: White = 56%, Black = 40%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Brito, Luismar"]
[Black "Santos, Marcus Vinicius Mor"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2302"]
[BlackElo "2402"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,93,55,56,56,40,31,42,33,58,-32,-33,-22,-14,-47,-18,-25,0,0,29,-21,-14,-20,-20,-24,-24,-20,-27,-11,-12,-21,-2,-6,-13,-16,0,-36,-21,0,0,-33,-19,-22,-10,-6,0,0,0,0,0,0,54,61,52,80,174,162,260,143,131,113,273,142,160,152,256,255,239,154,313,317,299,251,311,334,321,316,273,256,544,388,889,873,29997,29998]} 1. Nc3 g6 2. d4 Bg7 3. Nf3 d6 4. e4 a6 5. a4 b6 6. Bc4 e6 7. Bg5 {B06: Modern Defence} (7. O-O Ne7 8. Bf4 Nd7 9. Qd2 h6 10. Rfe1 g5 11. Bg3 Ng6 12. h3 Nf6 13. e5 Nh5 14. Bh2 Nhf4 15. exd6 cxd6 {1-0 (36) Gustafsson,J (2630)-Fier,A (2636) Linares 2015}) 7... Ne7 8. Qd2 h6 9. Be3 {White is slightly better.} Nd7 10. Ne2 (10. O-O $14) 10... Bb7 11. Ng3 $146 ({Predecessor:} 11. Bd3 Nf6 12. Ng3 d5 13. e5 Ne4 14. Qe2 c5 15. c3 Nf5 16. Nxf5 exf5 17. Bxe4 fxe4 {½-½ (50) Mueller,B-Eckard,M Hofheim 1995}) 11... d5 12. Bd3 dxe4 13. Bxe4 Bxe4 14. Nxe4 Nd5 15. c4 Nxe3 16. fxe3 O-O 17. O-O a5 18. Rad1 Qe7 19. b3 e5 20. Nc3 e4 21. Ne1 f5 22. Nc2 Rad8 23. Qe1 Kh7 24. Nd5 Qd6 25. Qh4 c6 26. Qe7 Qxe7 27. Nxe7 Nb8 {Strongly threatening ...Rd7.} 28. d5 c5 29. Na3 Rd7 30. d6 Rfd8 (30... Bf6 $11) 31. Nb5 $14 Be5 {[%cal Re5d6]} 32. Nd5 Rb7 (32... Nc6 $16) 33. g4 $1 $18 fxg4 (33... Rf8 {was called for.} 34. Ne7 Rf6) 34. Nf6+ (34. Ne7 $1 $18 {Rf7+ is the strong threat.} Kg7 35. Rd5) 34... Bxf6 $16 35. Rxf6 Rbd7 $2 {[#]} (35... Nc6 $16) 36. Re6 (36. Nc7 $1 $18) 36... Nc6 {[#]} 37. Rf1 $1 (37. Rxe4 $6 h5 $14) 37... h5 (37... Kg7 $16) 38. Rff6 $18 Rg7 39. Nc3 (39. Rxe4 $6 Rdd7 $16) 39... Nb4 $2 (39... Nb8 $16 {might work better.} 40. Nxe4 Kh6) 40. Nxe4 Kh6 41. Nc3 Nc2 42. Nd5 Ne1 {intending ...Nf3+.} 43. Ne7 ({Not} 43. Nxb6 Nf3+ 44. Rxf3 gxf3 $16) 43... Nf3+ 44. Kf2 Kg5 $2 (44... Kh7 45. Rxg6 (45. Nxg6 Ng5 $16) 45... Rxg6 46. Rxg6 (46. Nxg6 $2 {perishes.} Ng5 $19) 46... Nxh2) 45. Nxg6 Nxh2 $2 (45... Nd2 46. Nf4 Ne4+ 47. Rxe4 Kxf6) 46. e4 {White wants to mate with Rf5+.} Nf3 47. Rf5+ {Precision: White = 51%, Black = 30%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Bueno, Alfeu Junior Varela"]
[Black "Matsuura, Everaldo"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "2271"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,67,0,-19,-6,-49,-35,-47,-47,-56,-48,-48,-25,-30,-18,-26,-29,-32,-35,-73,-53,-70,-80,-275,-232,-275,-281,-269,-271,-242,-103,-101,-101,-104,-132,-122,-112,-116,-38,-141,-95,-224,-223,-181,0,0,0,0,0,0]} 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 8. Nge2 Nd4 9. h3 b4 10. Nd1 e6 11. O-O {LiveBook: 3 Games} Ne7 {B26: Closed Sicilian: 3 g3, lines with early Be3} 12. f4 O-O 13. g4 f5 {Black is slightly better.} 14. Ng3 Qc7 (14... Qa5 15. Bf2 fxe4 16. dxe4 Ba6 17. Re1 Nec6 18. Be3 Qa4 19. b3 {0-1 (42) Krapivin,A (2495)-Azarov,S (2622) Moscow 2010}) 15. c3 $146 ({Find the theoretical novelty and annotate with similar games:} 15. exf5 exf5 16. g5 Bb7 17. c3 bxc3 18. bxc3 {0-1 (32) Cruz,P (2003)-Andrade,L (2230) Odivelas 2001}) 15... bxc3 (15... Ndc6 {NOTEXT} 16. Nf2 Qb6 17. Rfb1 d5 18. Qe1 fxe4 19. dxe4 d4) 16. bxc3 Ndc6 17. Rc1 Ba6 18. Re1 fxe4 19. Nxe4 Nd5 20. Ndf2 Nce7 21. c4 $2 (21. Ng5 $17 {was necessary.} Qd7 22. Nd1) 21... Rb2 22. Rc2 Rxc2 23. Qxc2 Nxe3 ({Don't play} 23... Nxf4 24. Bxf4 Rxf4 25. Qd2 $17) 24. Rxe3 Rxf4 (24... d5 $19 {is more deadly.} 25. Nd2 Nc6) 25. Ng5 $17 Bc8 $1 26. Nxe6 Bxe6 27. Rxe6 Bd4 28. Re2 {[#]} Nc6 (28... Qb8 $1 $17 {Hoping for ...Rf7.} 29. Qc1 Qf8) 29. a3 (29. Qd2 $15 Rf8 30. Kh1) 29... Kg7 30. Bd5 {[#]} (30. Qd2 $17 Be5 31. Re1) 30... Ne5 $1 $19 31. Kg2 Bxf2 $2 ({Black should try} 31... Qe7 $19 {Threatens to win with ...h5.} 32. Qb1 Qh4) 32. Rxf2 $11 {The position is equal.} Rxf2+ 33. Kxf2 Qe7 34. Qd2 {Precision: White = 36%, Black = 43%.} 1/2-1/2

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Rocha, Vitor Firmo De Souz"]
[Black "Supi, Luis Paulo"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2219"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,102,44,42,45,45,48,34,45,30,30,18,23,22,29,0,8,0,4,0,0,0,0,-22,-19,-27,-57,-174,-157,-174,-180,-166,-167,-166,-124,-114,-125,-164,-162,-326,-320,-319,-319,-312,-316,-318,-314,-312,-311,-383,-304,-393,-387,-382,-330,-377,-374,-377,-358,-490,-480,-491,-489,-545,-534,-585,-587,-716,-718,-702,-704,-695,-689,-675,-665,-947,-901,-6149,-11454,-12843,-12843,-12848,-12849]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2 d6 {B42: Sicilian: Kan Variation: 5 Bd3} 9. O-O Nc6 10. Nc3 Qc7 11. Bd2 Nf6 12. Bh6 {LiveBook: 3 Games} Bf8 13. Bxf8 $146 ({Predecessor:} 13. Qd2 b6 14. Bxf8 Rxf8 {1-0 (63) Grischuk,A (2709)-Svidler,P (2742) Rishon Le Ziyyon 2006}) 13... Kxf8 14. Rae1 Kg7 15. Kh1 b5 16. a3 Bb7 17. f4 Rhf8 18. Rf3 b4 19. axb4 Nxb4 20. Rh3 Nxd3 21. Rxd3 e5 22. f5 gxf5 23. exf5 Kh8 24. Rh3 ({White should play} 24. Nd2 $15) 24... Rg8 $19 {[%cal Bf8g8,Bg8g5,Bg5f5][%mdl 32]} 25. Rg1 Rg5 {And now ...Rag8 would win.} 26. Nd2 Rag8 $36 {[%mdl 2048] Black has strong initiative.} 27. Nde4 Nxe4 28. Nxe4 Rxf5 29. Qd3 {[#] aiming for Nf6!} Rg6 $1 30. Rxh7+ $2 (30. Rg3) 30... Kxh7 31. Qh3+ Kg7 32. Qxf5 Qxc2 33. Ng3 Qxf5 ({Not} 33... Qxb2 34. Qd7 $17) 34. Nxf5+ {[%mdl 4096] Endgame KRB-KRN} Kf8 35. Ne3 Be4 36. h3 Rg3 {[%cal Rg3h3] [#]} 37. Re1 Rxh3+ 38. Kg1 Rg3 39. Kf2 Rg6 40. b4 d5 {Black is clearly winning.} 41. g3 Rc6 42. g4 Ke7 43. g5 Ke6 44. Kg3 Rc3 45. Kh4 Bf3 46. Nf1 d4 47. Ra1 Bb7 48. Nd2 e4 49. Nxe4 Bxe4 50. Rxa6+ Ke5 {( -> ...Bf5)} 51. Rf6 Bf5 {Precision: White = 29%, Black = 93%.} 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.2"]
[White "Nery Junior, Jose Antonio"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[ECO "B96"]
[WhiteElo "2134"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,42,0,0,0,0,0,95,97,91,79,602]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O b5 10. e5 Bb7 11. Qh3 dxe5 12. Nxe6 fxe6 13. Qxe6+ Be7 14. Bxb5 axb5 {B96: Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7} 15. Nxb5 {[%cal Bc3b5,Bb5d6,Bd6f7][%mdl 32]} Qb6 (15... Qc6 16. Nd6+ Kd8 17. fxe5 Kc7 18. Qxe7 Rxa2 19. exf6 Ra1+ 20. Kd2 Qd5+ 21. Kc3 Qa5+ 22. Kd3 Qd5+ 23. Kc3 Qa5+ 24. Kd3 {½-½ (24) Kulaots,K (2573)-Korobov,A (2652) Tegernsee 2017}) 16. Nd6+ Kd8 17. Bxf6 Bxf6 {LiveBook: 5 Games} 18. Nf7+ Kc8 19. Rd6 $1 (19. Qxd7+ Kb8 $17) 19... Qe3+ $146 (19... Qb5 $11 20. c4 Qa4 21. fxe5 (21. Nxh8 Be4 $17) 21... Be7 22. Qxe7 Qxc4+ 23. Kd2 Qb4+ 24. Kc1 Qc4+ 25. Kd2 Qb4+ 26. Kc1 Qc4+) ({Find the theoretical novelty and annotate with similar games:} 19... Qb5 20. c4 Qa4 21. Rhd1 Be4 22. R1d2 Ra7 23. Rb6 Be7 24. Nxe5 Re8 25. Nxd7 Rxd7 26. Rb5 Red8 27. Qxe4 Qxa2 28. Rxd7 Rxd7 29. Qc6+ {½-½ (29) Duran Vallverdu,J (2298)-Van Willigen,J (2429) ICCF email 2015}) 20. Kb1 $16 Kb8 {[#] ...Nc5 is the strong threat.} 21. Rxd7 ({Inferior is} 21. Nxh8 Nc5 $17) 21... Rf8 $2 {[%mdl 40960] An unexpected result.} (21... Ra6 $16 22. Rd6 (22. Qc4 $2 Rc8 $19) (22. Rxb7+ Kxb7 23. Qd5+ Kc7 $16) 22... Bc8) 1/2-1/2

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.3"]
[White "Mecking, Henrique"]
[Black "Nery Junior, Jose Antonio"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "2597"]
[BlackElo "2134"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,105,60,56,49,68,53,58,47,84,80,93,93,102,95,98,110,120,118,137,127,115,111,115,102,115,114,115,46,102,46,56,61,81,70,90,85,83,74,106,91,80,62,66,70,70,38,81,93,93,62,122,90,132,54,70,43,143,143,151,123,165,151,183,192,167,169,366,345,375,249,277,247,810,781,2088,2064,29982,29983]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 {[%cal Bg1f3,Bf3d2,Bd2c4][%mdl 32]} g6 7. Nd2 Bg7 8. e4 O-O 9. Be2 Na6 10. O-O Nc7 11. a4 b6 12. Nc4 Ba6 13. Bg5 Re8 14. f3 Rb8 15. Kh1 Qd7 16. Qd2 {A79: Modern Benoni: Classical: 9...Re8 10 Nd2 Na6 11 f3} (16. Ne3 Bxe2 17. Qxe2 a6 18. Qf2 h6 19. Bxf6 Bxf6 20. Ng4 Bg7 21. Qh4 h5 22. Nf6+ Bxf6 23. Qxf6 b5 24. axb5 axb5 {½-½ (39) Levin,E (2505)-Shimanov,A (2655) St Petersburg 2013}) 16... Bxc4 17. Bxc4 a6 18. Be2 {[%cal Bc4e2,Be2d1,Bd1c2][%mdl 32] White is slightly better.} Rb7 $146 ({Predecessor:} 18... h5 19. Ra3 Nh7 20. Be3 Qe7 21. Rb1 Be5 22. b4 Qh4 23. Bg1 Nf6 24. bxc5 bxc5 {1-0 (70) Stremavicius,T (2370)-Vavulin,M (2431) Batumi 2014}) 19. Rab1 b5 20. b4 {Strongly threatening bxc5.} c4 21. a5 Rbb8 22. Bd1 Rf8 23. Bc2 Rbe8 24. Rbd1 Kh8 25. Be3 Qd8 26. Bd4 Nd7 27. Bxg7+ Kxg7 28. g4 (28. Ne2 $16) 28... Ne5 {[#]} ({Better is} 28... Qh4 $14) 29. h3 (29. g5 $1 $16) 29... Qh4 $14 30. Kg2 Kg8 31. Qf2 Qf6 32. Ne2 Nd7 {White should prevent ...Qb2.} 33. Qd4 Qe7 34. Ng3 Qe5 35. f4 Qxd4 36. Rxd4 f6 37. h4 Re7 38. h5 Kg7 39. Rdd1 Ne8 ({Black should play} 39... Rg8 $14) 40. Rh1 Kg8 41. hxg6 (41. Rh3 $16) 41... hxg6 42. Rh6 {Threatens to win with Rdh1.} Rg7 {[#]} (42... Rh7 $1 $14 43. Rxh7 (43. Rxg6+ Kf7 $11) 43... Kxh7) 43. Rdh1 $1 $16 {Black must now prevent e5.} Kf7 44. Kf3 Ke7 45. Ke3 Rff7 46. Ne2 Nf8 47. Nd4 Kd7 $2 (47... Nc7 48. f5 Rg8) 48. Rh8 $18 Nc7 49. Bd1 g5 50. f5 Rh7 $2 {[#]} (50... Ke7 51. Ne6 Nfxe6) 51. Rxf8 $1 {[%mdl 512]} Nxd5+ (51... Rxf8 52. Rxh7+) 52. exd5 Re7+ 53. Ne6 {Precision: White = 65%, Black = 23%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.3"]
[White "Proudian, Armen"]
[Black "Martins, Vinicius Tine"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2423"]
[BlackElo "2287"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,101,30,-4,3,-25,-24,-22,-11,2,-14,-22,24,12,21,18,8,0,0,-10,-6,-36,-41,-47,-51,-102,-87,-116,-124,-121,-12,-12,20,20,26,25,53,56,62,49,49,41,39,45,45,41,47,36,44,45,39,15,10,0,39,0,65,21,67,58,73,38,91,55,60,51,65,71,62,62,112,59,226,108,112,104,873,116,125,105,276,212,228,239,526,505,797,764,2664,2454,29986,29987,29989,29990]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. Qe2 {LiveBook: 5 Games. C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} (6. exd5 Qxd5 7. Bc4 Qd6 8. Nbd2 O-O 9. b4 Bb6 10. O-O Bf5 11. Qc2 Rad8 12. a4 a5 13. b5 {0-1 (53) Caruana,F (2799)-Grischuk,A (2782) Saint Louis 2017}) 6... O-O 7. Bg5 dxe4 $1 8. dxe4 {Black has an edge.} a5 $146 ({Find the theoretical novelty and annotate with similar games:} 8... Qe7 9. Nbd2 Nd8 10. b4 Bd6 11. Nc4 Ne6 12. Bd2 a6 13. Nxd6 cxd6 {0-1 (58) Alekseenko,K (2582)-Lysyj,I (2643) St Petersburg 2016}) 9. O-O (9. Nbd2 {NOTEXT} Qe7 10. Ba4 Nd8 11. Nc4 Ne6 12. Bd2) 9... Qe7 10. Nbd2 Nb8 {[%cal Bc6b8,Bb8d7,Bd7f8,Bf8g6,Bg6h4][%mdl 32]} 11. Ba4 c6 12. Rfd1 h6 $36 {[%mdl 2048] Black has the initiative.} 13. Bh4 Nbd7 14. Nf1 Re8 15. Rd2 Nf8 16. Bg3 Ng6 17. Nh4 (17. Bc2 $15) 17... Nxh4 $17 18. Bxh4 {[#]} g5 $1 {White must now prevent ...Bg4.} 19. Bg3 {[#]} Bg4 (19... h5 $1 $17 {And now ...b5 would win.} 20. h3 h4) 20. Qe1 $1 $11 Nh5 21. Bd1 Bxd1 22. Raxd1 Nf6 23. Kh1 Bb6 24. f3 Rad8 25. Rxd8 Rxd8 26. Rxd8+ Bxd8 27. Ne3 Qe6 28. b3 Nh5 29. Qd2 Bc7 30. Qd3 a4 31. c4 axb3 32. axb3 b6 (32... Bb6 $11) 33. Qd2 Kh7 34. Bf2 Ng7 35. h3 f6 (35... Qd6 $14 36. Qc2 Ne6) 36. Kh2 Kg6 37. g4 Qe7 38. b4 Qd8 39. Qa2 Ne6 40. c5 (40. b5 $16) 40... Ng7 $2 ({Better is} 40... Nd4 $14) 41. b5 (41. h4 $18 h5 42. hxg5) 41... cxb5 $16 42. c6 Qd3 $2 {[%mdl 8192]} (42... h5 $16) 43. Qg8 $2 (43. Nd5 $18 {is the precise move to win. White wants to mate with Ne7+.} Qc4 44. Qxc4 bxc4 45. Nxc7) 43... Qd8 44. Qb3 Bd6 $2 (44... Qd2 $16 {was called for.} 45. Kg3 h5) 45. Nd5 Ne6 46. Qxb5 Qa8 $2 (46... Nd4 47. Bxd4 (47. Qxb6 Qxb6 48. Nxb6 Nxc6 $11) 47... exd4+ 48. Kg2 Qe8 49. Nxb6 Kg7) 47. Qxb6 $18 Qa2 (47... Qg8 $142 48. c7 Bxc7) 48. Kg3 Nf4 49. Qd8 {[%cal Rd8g8]} Kg7 50. Qxd6 Ne2+ 51. Kg2 {Precision: White = 35%, Black = 36%.} 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.3"]
[White "Macedo, Maximo Iack"]
[Black "Toth, Christian Endre"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "2358"]
[BlackElo "2348"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,85,15,-18,-12,7,39,25,92,65,42,33,54,25,40,44,63,43,52,57,79,53,197,191,192,197,186,184,202,196,219,175,219,208,330,152,226,197,181,178,225,215,222,218,215,133,122,148,166,0,38,38,44,-134,-131,-154,0,-167,-164,-316,-315,-335,-279,-489,-413,-849,-849,-5206,-5180,-29964]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. a3 Ne4 7. Bd3 Nxc3 8. bxc3 Be7 9. O-O O-O 10. e4 {LiveBook: 5 Games. D40: Queen's Gambit Declined: Semi-Tarrasch with 5 e3} (10. Bb2 Na5 11. Nd2 dxc4 12. Nxc4 Nxc4 13. Bxc4 b5 14. Be2 Bb7 15. a4 cxd4 16. exd4 b4 17. cxb4 Bxb4 {½-½ (45) Gagunashvili,M (2570)-Mamedyarov,S (2726) Tbilisi 2012}) 10... dxe4 11. Bxe4 Bf6 {[%cal Rc5d4]} 12. Be3 {White is slightly better.} Qa5 $146 (12... Na5 $11) ({Find the theoretical novelty and annotate with similar games:} 12... Na5 13. Qd3 g6 14. Rab1 Bg7 15. Qe2 Qc7 16. Rb5 cxd4 17. cxd4 Qxc4 {½-½ (83) Ibragimov,I (2545)-Dvoirys,S (2570) Elista 1996}) 13. Qc2 h6 14. Rfb1 a6 15. a4 $36 {[%mdl 2048] White has some pressure.} Rd8 {[%cal Rc5d4]} 16. Rd1 Bd7 17. h4 Be8 18. g4 cxd4 19. cxd4 {[%cal Bc3d4,Bd4d5][%mdl 32]} e5 (19... Qc7 $14) 20. d5 $1 $18 {[%cal Rd5c6]} Nd4 21. Nxd4 exd4 22. Bxd4 Bxd4 23. Rxd4 Rac8 24. Qb2 b6 25. g5 Rd6 (25... h5 {might work better.} 26. Bd3 Qc5) 26. Bd3 (26. Bf5 $18 {is more deadly.} Rcd8 27. gxh6 Rxh6 28. Rg4) 26... Qc5 (26... Bd7 $16 27. Rf4 Re8) 27. Rg4 h5 28. Re4 b5 29. axb5 axb5 30. Qe2 Bd7 31. Re1 {White wants to mate with Re8+!} g6 32. Re7 bxc4 {[#]} 33. Be4 $2 ({Only move:} 33. Bxg6 $1 $18 {[%mdl 512]} Rxg6 34. Rxd7) 33... Qd4 34. Qf3 Rf8 35. Qf4 $2 (35. Qa3 $14 Rxd5 36. Bxd5 Qxd5 37. Qc3) 35... Rxd5 $17 36. Qf3 Re5 $2 (36... Rd6 $17 37. Kg2 c3) 37. Rxe5 $2 (37. Qf6 $11 {and White is okay.} Qd2 38. Qxe5 Qxe1+ 39. Kg2) 37... Qxe5 $19 38. Re3 $2 (38. Qd1 Bf5 39. Bxf5 Qxf5 40. Qd4) 38... Bg4 39. Qg2 Rd8 {...Rd1+ is the strong threat.} 40. Bf3 $2 (40. Qh2 Qd4 41. Qc7) 40... Qa1+ 41. Kh2 (41. Qf1 $142 Qxf1+ 42. Kxf1 Bxf3 43. Rxf3) 41... c3 {[%cal Bc4c3,Bc3c2][%mdl 32]} 42. Bxg4 c2 (42... hxg4 $2 43. Qc6 $19) 43. Qc6 {Precision: White = 28%, Black = 36%.} 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.4"]
[White "Toth, Christian Endre"]
[Black "Macedo, Maximo Iack"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2348"]
[BlackElo "2358"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,53,110,101,89,82,93,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,119,90,670,657,641,639]} 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. c3 Qb6 5. Qb3 c4 (5... Nf6 6. Nd2 c4 7. Qc2 Nh5 8. Bg5 h6 9. Bh4 g5 10. Be2 Ng7 11. Bg3 Bf5 12. Qc1 e6 {1-0 (41) Carlsen,M (2832)-So,W (2812) Leuven 2017}) 6. Qc2 {D00: 1 d4 d5: Unusual lines} Bf5 7. Qxf5 Qxb2 8. Qxd5 Qxa1 9. Qb5 {LiveBook: 11 Games} a6 10. Qxb7 Nd8 {[#]} 11. Qxa8 ({White should try} 11. Qe4 $1 $16) 11... Qxb1+ $11 12. Ke2 e5 13. Bxe5 {[#]} Qd3+ $146 14. Kf3 Qxf1 15. Bc7 {[%csl Gc7][%cal Ra8d8] [#]} Be7 {aiming for ...Nf6.} 16. Bxd8 Bxd8 17. Qc6+ Ke7 18. Qc5+ Ke8 {Threatens to win with ...Nf6.} 19. Qc6+ Ke7 {[%cal Be8e7,Be7d7,Bd7c7,Bc7c8,Bc8b8][%mdl 32]} 20. Qc5+ Kd7 {...Ne7 is the strong threat.} 21. Qd5+ Kc7 {White must now prevent ...Nf6.} 22. Qe5+ ({Don't blunder} 22. Qxf7+ $2 Ne7 $19) 22... Kc8 {Hoping for ...Nf6.} 23. Qf5+ Kb8 24. Qe5+ Bc7 (24... Kc8 $11 {remains equal.} 25. Qf5+ (25. Qxg7 Qd1+ 26. Ne2 Qxh1 $11) 25... Kb8 26. Qe5+ Kc8) 25. Qxg7 $16 Qd1+ $2 {[%mdl 8192]} (25... Qb1 $16) 26. Ne2 $18 Qxh1 27. Qxh8 1-0

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.4"]
[White "Martins, Vinicius Tine"]
[Black "Proudian, Armen"]
[Result "0-1"]
[ECO "E46"]
[WhiteElo "2287"]
[BlackElo "2423"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,38,7,8,-67,-66,-55,-29,-32,-39,-35,-41,-61,-24,-47,-8,-18,-10,-108,-98,-135,-59,-64,-35,-90,-91,-332,-327,-744,-739]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 d5 6. a3 Be7 {LiveBook: 1789 Partien} 7. g3 {E46: Nimzoindisch (Rubinstein-System)} (7. cxd5 $11 exd5 8. Nf4) (7. cxd5 exd5 8. Nf4 Re8 9. Bd3 Bd6 10. O-O Bxf4 11. exf4 Nc6 12. Be3 Ne7 13. Qc2 g6 14. f3 Bf5 15. g4 Bxd3 16. Qxd3 {½-½ (48) Caruana,F (2811)-So,W (2792) Wijk aan Zee 2018}) 7... dxc4 $15 8. Bg2 c5 9. Qa4 {Schwarz hat minimalen Vorteil.} Bd7 $146 ({Vorgänger:} 9... Nc6 10. Qxc4 Na5 11. Qa2 c4 12. O-O Nb3 13. Rb1 Rb8 14. e4 b5 {½-½ (42) Wade,R (2365)-Langeweg,K (2425) London 1971}) 10. Qxc4 Bc6 11. e4 Nbd7 (11... b5 $5 12. Nxb5 Nxe4 $15) 12. O-O b5 13. Qd3 b4 $36 {[%mdl 2048] Schwarz steht aktiver.} 14. Nb1 (14. d5 $11 {hält das Gleichgewicht.} exd5 15. Nxd5) 14... cxd4 $17 15. Qxd4 bxa3 (15... Bb5 $17 16. e5 Nd5) 16. Nxa3 $15 e5 17. Qc4 (17. Qd3 $15) 17... Rc8 $17 18. Qa6 $2 {[#]} (18. Qd3 $17) 18... Nc5 $19 (18... Bxe4 $2 19. Rd1 $19) ({Bloß nicht} 18... Nxe4 19. b4 $19) 19. Qxa7 $2 (19. Qc4 Ncxe4 20. Qb3) 19... Ra8 {Precision: Weiß = 15%, Schwarz = 65%.} 0-1

[Event "84th BRA-ch 2017"]
[Site "Rio de Janeiro"]
[Date "2018.02.07"]
[Round "1.4"]
[White "Nery Junior, Jose Antonio"]
[Black "Mecking, Henrique"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2134"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2018.??.??"]
[EventType "k.o."]
[EventCountry "BRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,62,0,0,0,12,-100,2,1,2,-5,0,0,0,-44,-22,-177,-152,-202,-199,-230,-230,-243,-227,-229,-176,-170,-142,-308,-287,-277,-243,-269,-271,-271,-266,-282,-279,-330,-310,-388,-381,-394,-385,-376,-391,-374,-358,-511,-502,-557,-563,-746,-732,-773,-768]} 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. g3 d5 5. exd5 exd5 6. Bg2 {B40: Sicilian: 2...e6, Unusual lines} d4 7. Ne4 {[#]} (7. Qe2+ $11 {keeps the balance.} Be7 8. Ne4) (7. Qe2+ Be6 8. Ne4 Be7 9. d3 h6 10. O-O Nf6 11. Nxf6+ Bxf6 12. Bh3 Qd5 13. Bxe6 fxe6 {1-0 (38) Nakamura,H (2787)-Giri,A (2798) Zuerich 2016}) 7... Be7 (7... f5 $1 $17 {[%cal Rf5e4]} 8. Neg5 Qe7+ 9. Kf1 h6) 8. Qe2 $11 {The position is equal.} d3 9. Qxd3 $146 ({Predecessor:} 9. cxd3 Bg4 10. h3 Nd4 11. Qd1 Bxf3 12. Bxf3 Qd7 13. b3 Nxf3+ 14. Qxf3 {½-½ (28) Pekin,T (1928)-Kuuse,K (1995) ICCF email 2016}) 9... Qxd3 10. cxd3 Nf6 11. a3 O-O $36 {[%mdl 3072] Black has compensation. Black is pushing.} 12. Kd1 $2 (12. O-O $11) 12... Rd8 $19 13. Kc2 Bg4 14. Ne1 Nd4+ 15. Kb1 Nb3 16. Ra2 Nxe4 17. Bxe4 Be6 18. Ra1 $2 (18. Ng2 $17) 18... Nxa1 19. Kxa1 Bd5 20. Nc2 {[#]} f5 $1 {[%mdl 512]} 21. Bxd5+ (21. Bxf5 Bxh1) 21... Rxd5 22. Re1 Bf6 23. Re3 Rad8 24. Ne1 Bd4 25. Re2 Re5 26. Rxe5 Bxe5 {KRB-KBN} 27. Kb1 Bd4 28. Ng2 (28. f4 $142) 28... Bxf2 {Black is clearly winning.} 29. Kc2 Bg1 30. Nh4 Bxh2 31. Nxf5 g6 {Precision: White = 30%, Black = 59%.} 0-1

