[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Bachmann, Axel"]
[Black "Delgado Ramirez, Neuris"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2653"]
[BlackElo "2613"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,80,-3,4,7,33,23,27,16,34,20,15,12,22,24,24,22,18,14,18,18,21,15,16,10,19,21,20,0,12,27,30,24,23,25,34,37,46,18,11,0,0,0,0,0,0,0,0,-30,-22,-19,-21,-22,-14,-17,0,0,0,-14,-14,-11,-26,-14,-7,0,0,0,0,-15,-16,-18,-5]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5. Nf3 O-O 6. Bd2 c5 7. dxc5 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} Bxc5 8. e3 Nc6 9. a3 {White has an edge.} a6 10. Bd3 h6 $146 ({Predecessor:} 10... d5 11. cxd5 exd5 12. Ne2 Bb6 13. O-O Bg4 14. Ned4 Rc8 {0-1 (30) Kavutskiy,K (2367)-Moradiabadi,E (2594) Las Vegas 2016}) 11. O-O e5 12. Rfd1 Be6 13. Bc1 {[%cal Bd2c1,Bc1b2,Bb2c3][%mdl 32]} Rc8 14. b3 Ba7 15. Bb2 Na5 16. Ne4 Nxe4 17. Bxe4 {Strongly threatening Bxe5!} Qc7 18. Bc3 Nc6 19. Rd2 f5 20. Bxc6 $1 bxc6 21. c5 Bxc5 {[#]} 22. Bxe5 $1 {[%mdl 512]} dxe5 23. Qxc5 Bd5 24. b4 (24. Rc1 $5 {[%cal Rd2d5]} Rfd8 25. b4 $14) 24... f4 25. Ne1 (25. e4 $5 Bxe4 26. Nxe5 $14) 25... Qf7 26. exf4 exf4 27. f3 Rce8 28. Nd3 Re3 29. Qd4 Qe7 30. Rf1 Qg5 31. Kh1 Rf5 32. a4 Qh4 (32... Bf7 $5 {[%cal Rf5d5]} 33. Nc5 Rd5 $11) 33. Kg1 Qg5 34. b5 (34. Nc5 {is more complex.} Bxf3 35. Qd8+ Kh7 36. Qxg5 Rxg5 37. a5) 34... cxb5 35. axb5 axb5 {[#] aiming for ...Bc4.} 36. Nxf4 $1 {[%mdl 512]} Qxf4 {The position is equal.} (36... Rxf4 37. Qxe3) 37. Qxf4 Rxf4 38. Rxd5 $11 {KRR-KRR} Rb4 39. Rfd1 Re2 {Threatens to win with ...Rbb2.} 40. R5d2 Rxd2 {Precision: White = 69%, Black = 77%.} 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Bruzon Batista, Lazaro"]
[Black "Cori, Jorge"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2650"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,32,34,6,14,12,22,25,29,24,31,20,34,16,16,13,25,18,35,30,21,0,0,0,0,0,0,0,0,7,58,0,1,7,69,58,69,77,158,86,164,133,133,136,153,133,334,327,321,302,310,213,184,66,80,60,294,0,0,0,0,0,0,-8,-8,-8,-8,-593,-594,-573,-563,-880,-879]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Qd3 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} (6. f4 a6 7. Be3 b5 8. Be2 Bb7 9. Bf3 Rc8 10. Nxc6 Bxc6 11. Qd4 b4 12. Ne2 Nf6 13. c4 Be7 14. O-O O-O 15. Ng3 d6 16. b3 a5 17. Kh1 Nd7 {½-½ (63) Nakamura,H (2779)-Najer,E (2679) Doha 2016}) 6... Nxd4 7. Qxd4 {Nb5 is the strong threat.} a6 $1 8. Be3 {The position is equal.} b5 9. f3 Ne7 10. O-O-O $146 ({Predecessor:} 10. Qd2 Nc6 11. Be2 Be7 12. O-O O-O 13. f4 Bb7 14. a3 Rac8 15. Rad1 {1-0 (39) Szymanowski,M (1556)-Wyszomirski,K (1656) Leba 2009}) 10... Nc6 11. Qd2 d6 12. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Rb8 13. Kb1 Bd7 14. h5 h6 15. Bd3 b4 16. Ne2 a5 17. f4 {[%cal Bf3f4,Bf4f5][%mdl 32]} a4 18. Rc1 Be7 19. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} Bf6 (19... O-O $11) 20. Rhg1 (20. g5 $14 Bd8 21. gxh6 Rxh6 22. f5) 20... Be7 $11 21. Rcf1 Rf8 (21... Qa5 $11) 22. f5 $14 Ne5 23. g5 $1 {[%cal Rg5h6]} b3 (23... Bxg5 $142 24. Bxg5 hxg5) 24. cxb3 ({Better is} 24. gxh6 gxh6 25. Bxh6 bxa2+ 26. Kxa2) 24... axb3 (24... Nxd3 $16 25. fxe6 (25. Qxd3 axb3 26. gxh6 bxa2+ 27. Ka1 gxh6 $11) 25... fxe6 26. Rxf8+ (26. Qxd3 Rxf1+ 27. Rxf1 Bb5 $17) 26... Bxf8 27. gxh6 (27. Qxd3 axb3 28. axb3 Bb5 $14) 27... gxh6 28. Qxd3 axb3) 25. Nc3 bxa2+ {[#]} 26. Ka1 $1 hxg5 ({Less strong is} 26... Nxd3 27. Qxd3 hxg5 28. Bxg5 $11) 27. Bxg5 Bf6 $2 (27... Qb6 $16 {was called for.} 28. Bxe7 Kxe7) 28. Bxf6 $18 gxf6 29. fxe6 fxe6 30. Rg7 Qb6 31. Be2 Rf7 32. h6 Ke7 $2 ({Black should play} 32... Rxg7 $14 33. hxg7 Ke7) 33. Nd1 $2 (33. Rfg1 $18) 33... Rxg7 $11 34. hxg7 {Strongly threatening Qh6.} Ba4 35. Nc3 Bc6 $1 $36 {[%mdl 2048] Black has some pressure.} 36. Bh5 Nc4 37. Qg2 {aiming for Nd1.} Rg8 ({Much weaker is} 37... Qxb2+ $6 38. Qxb2 Nxb2 39. Rg1 $16) 38. Nd5+ $2 {[%mdl 8192]} (38. Rxf6 $1 $11 Kxf6 39. Qg6+ Ke5 40. Qg3+ Kd4 41. Nd1) 38... exd5 $19 {Black is clearly winning.} 39. exd5 {[#]} Bxd5 $1 40. Re1+ (40. Qxd5 Qxb2#) 40... Kd8 {Precision: White = 61%, Black = 49%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Sevian, Samuel"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "1-0"]
[ECO "B66"]
[WhiteElo "2601"]
[BlackElo "2553"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,53,80,58,56,56,56,59,59,59,103,77,98,98,149,88,155,79,271,268,521,501,514,515,698,685,688,692,692,692]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Nxc6 bxc6 10. Bf4 d5 11. Qe3 Bb4 12. Be2 {B66: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 h6} O-O 13. e5 Nh7 (13... Nd7 14. h4 c5 15. Bxh6 gxh6 16. Qxh6 Nxe5 17. Rh3 Bxc3 18. bxc3 Ra7 19. Rg3+ Ng6 20. h5 Qh4 21. Rg4 Qh2 22. Bd3 {1-0 (22) Karjakin,S (2785)-Ivanchuk,V (2747) Doha 2016}) 14. Ne4 {LiveBook: 6 Games. White is better.} f5 $1 {[%cal Rf5e4]} 15. exf6 Nxf6 16. Nxf6+ Qxf6 17. Be5 $1 {[%cal Re5f6]} Bc5 18. Qc3 $1 (18. Bxf6 $6 Bxe3+ 19. fxe3 Rxf6 $11) 18... Qxf2 19. Bd3 $1 {[#]} Ra7 $146 ({Better is} 19... Bd7) ({Predecessor:} 19... Bd7) 20. Kb1 $36 {[%mdl 3072] White has strong compensation. White is really pushing.} Bb6 (20... Raf7 $142) 21. Qb4 ({Resist} 21. Qxc6 $6 Raf7 $14) (21. Rhf1 $142 Qc5 22. Rxf8+ Kxf8 23. Qe1 (23. Rf1+ Rf7 $16)) 21... a5 $2 {[#]} (21... Bc5 $16 22. Qg4 Qe3) 22. Qg4 $1 $18 {[%cal Rg4g6]} Qe3 $2 {[#]} (22... Qf7 23. Rhf1 Qe8) 23. Qg6 $1 {[%cal Rg6h7] Qh7+ would kill now.White is clearly winning.} Qxe5 24. Rhf1 {[%csl Gd3][%cal Rg6h7]} Rff7 {...Kf8 is the strong threat.} 25. Qh7+ Kf8 {aiming for ...g5.} 26. Qh8+ Ke7 27. Rxf7+ {Precision: White = 81%, Black = 18%.} ({Less strong is} 27. Qxc8 Bf2 $14) 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Fier, Alexandr"]
[Black "Bacallao Alonso, Yusnel"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2576"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,116,28,26,27,24,25,51,62,59,-39,-43,-38,-39,-50,-38,-48,21,-32,-10,-16,0,0,0,0,0,0,0,-84,-46,-76,-51,-288,-186,-184,-188,-206,0,0,0,-591,-137,-104,-122,-384,-262,-363,-46,-28,127,134,129,-206,-218,-214,-184,-183,-167,-137,-157,-166,-68,-42,-64,-183,-157,-170,-108,-113,-78,-123,-50,-66,-64,-69,-66,-68,-58,-73,-8,-95,-77,-183,-45,-43,0,-193,-30,-58,-56,-77,116]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6. Bf4 c6 7. h3 Be7 8. e3 O-O 9. Bd3 Re8 10. Qc2 Nf8 11. O-O Ng6 12. Bh2 Bd6 13. Bxd6 Qxd6 14. Rab1 Bd7 15. b4 {D35: Queen's Gambit Declined: Exchange Variation} Rac8 16. Rfc1 b6 17. Ba6 $146 {White is slightly better.} ({Predecessor:} 17. a4 Qe7 18. a5 Ne4 19. Bxe4 dxe4 20. Nd2 f5 21. axb6 axb6 {½-½ (32) Malek,D (2340)-Galdunts,S (2459) Germany 2011}) 17... Rb8 {next ...b5 is good for Black.} 18. b5 (18. Be2 $14) 18... c5 $15 19. dxc5 bxc5 20. Rd1 Ne5 21. Ne1 Qe6 (21... Be6 $15) 22. Nd3 (22. Rbc1 $11) 22... Qf5 23. Rbc1 d4 24. exd4 Nf3+ 25. gxf3 Qg5+ 26. Kh2 $1 Qh4 27. Qd2 (27. Nxc5 $2 Bxh3 28. Rd3 Nh5 $19) (27. Kg1 $1 $11 Qg5+ 28. Kh2) 27... cxd4 28. Na4 Nd5 29. Rh1 $2 ({White must play} 29. Re1 $1 $15) 29... Qxh3+ 30. Kg1 Qxf3 31. Rh2 Re4 $2 ({Stronger than} 31... Bxb5 32. Bxb5 Rxb5 33. Rg2 $15) (31... Bh3 $1 $19 32. Ne1 Qg4+ 33. Ng2 Re2) 32. Ne1 $1 $11 {[%cal Re1f3]} Rg4+ $40 {[%mdl 128] Black mounts an attack.} 33. Kf1 $2 {[%mdl 8192]} (33. Rg2 $1 $11 {and White stays safe.} Rxg2+ 34. Nxg2) 33... Qf6 $2 (33... Qf5 $19 {has better winning chances.} 34. Nc5 Re8) 34. Nc5 $17 Bf5 $1 35. Bb7 $2 {[%mdl 8192] [#]} (35. Ng2 $17 {was necessary.}) 35... Ne3+ $1 {[%mdl 512]} 36. Ke2 (36. fxe3 Bd3#) 36... Re8 $2 (36... Rxb7 $19 37. fxe3 (37. Nxb7 $2 {too greedy.} Qe5 $19) 37... dxe3) 37. fxe3 $15 dxe3 $2 ({Black should play} 37... Rxe3+ $11 38. Kd1 Rg1) 38. Qc3 $16 Rd4 39. Nf3 $2 {[%mdl 8192]} (39. Ncd3 $1 $16 {is forced if you want to stay better.}) 39... Rd2+ $1 $19 40. Ke1 {Threatens to win with Qxf6.} Qd6 41. Rxd2 exd2+ 42. Kf2 dxc1=Q 43. Qxc1 h6 (43... Bd3 $1 $19 {( -> ...Re2+)} 44. Nxd3 Qxd3) 44. Bc6 $15 Re7 45. Nb3 (45. Qc4 $15) 45... g5 $19 {[%cal Bg7g5,Bg5g4][%mdl 32]} 46. Qd2 Qf6 (46... Bd3 $19 47. Nbd4 Bb1) 47. Qd4 $17 Qe6 $1 {[%cal Re6e2] Strongly threatening ...Qe2+.} 48. Qd2 Kg7 (48... Bg4 $17 {aiming for ...Bxf3.} 49. Nbd4 Qf6) 49. Nc5 Qf6 $1 {Hoping for ...g4.} 50. Qd4 $1 g4 51. Qxf6+ Kxf6 52. Nd4 Bc8 (52... Re5 $17 53. Ncb3 h5) 53. a4 (53. Bd5 $11) 53... Ke5 54. Ne2 {[#]} (54. Ke3 $17) 54... Kd6 ({Better is} 54... h5 $1 $19 55. Nd3+ Kd6) 55. Ne4+ $15 Ke5 (55... Kc7 $15) 56. Nc5 $19 {[#]} f5 $2 (56... h5 $1 $19 {...h4 is the strong threat.} 57. Nd3+ Kd6) 57. Nd3+ Kd6 58. Ndf4 Ke5 $2 {Precision: White = 41%, Black = 31%.} (58... Bd7 $17 {stays on course.} 59. Nd4 Rh7) 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Ortiz Suarez, Isan Reynaldo"]
[Black "Ramirez, Alejandro"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "2570"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,44,10,7,0,0,-7,-8,-49,0,-20,-40,-23,-20,-26,-20,-40,-41,-44,-37,-38,-37,-41,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 Nf6 8. O-O Be7 9. f4 d6 10. Kh1 O-O 11. a4 Nxd4 12. Qxd4 Bd7 13. e5 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3} Ne8 14. a5 Bc6 15. Na4 {The position is equal.} f6 $146 ({Predecessor:} 15... Rd8 16. Qc3 Rc8 17. Nb6 Rd8 18. Bd4 dxe5 19. Bxe5 Bd6 20. Rad1 Bxe5 21. fxe5 {1-0 (45) Kovchan,A (2591)-Miladinovic,L (2186) Heraklion 2015}) 16. c4 dxe5 17. fxe5 Rd8 18. Qc3 {With the idea Bb6.} Qxe5 19. Qxe5 fxe5 {Black is slightly better.} 20. Nc5 $1 Rxf1+ 21. Rxf1 Nf6 {aiming for ...Bxc5.} 22. Nxe6 Rc8 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Flores, Diego"]
[Black "Tang, Andrew"]
[Result "1/2-1/2"]
[ECO "D58"]
[WhiteElo "2567"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,39,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. Bd3 Bb7 9. O-O Nbd7 10. cxd5 Nxd5 11. Bg3 c5 12. Rc1 Nxc3 13. bxc3 Nf6 {D58: Queen's Gambit Declined: Tartakower Defence} 14. Qe2 {LiveBook: 3 Games. The position is equal.} Rc8 (14... Ne4 15. Be5 Bd6 16. Rfd1 Qc7 17. Qc2 Nf6 18. Bxf6 Bxf3 19. gxf3 gxf6 20. f4 {½-½ (20) Chiburdanidze,M (2497)-Krush,I (2403) Bled 2002}) 15. Ba6 Qd5 $146 ({Predecessor:} 15... Bxa6 16. Qxa6 Bd6 17. dxc5 Bxg3 18. hxg3 Rxc5 19. Qxa7 Ra5 20. Qb7 Rxa2 21. Rb1 Qc8 22. Qxc8 Rxc8 23. Rxb6 Rc2 {½-½ (23) Gattass,A (2258)-Sztokbant,B (2059) Sao Jose do Rio Preto 2012}) 16. Bc4 Qh5 17. Ba6 Qd5 18. Bc4 Qh5 19. Ba6 Qd5 20. Bc4 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Shabalov, Alexander"]
[Black "Iturrizaga Bonelli, Eduardo"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2556"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,74,6,20,0,4,4,3,-6,0,-55,-6,-39,0,0,0,3,17,17,17,22,23,0,0,0,6,0,0,0,22,-25,-27,-46,39,26,20,-56,-50,-262,-260,-247,-257,-245,-259,-274,-269,-274,-262,-331,-314,-325,-318,-318,-318,-318,-318,-325,-250,-1385,-1362]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 Nf6 7. Bd3 a6 8. O-O Bd6 9. h3 O-O 10. Nde2 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} (10. Qd2 Nxd4 11. Bxd4 Bf4 12. Be3 Bh2+ 13. Kh1 Be5 14. Na4 b5 15. Nb6 Rb8 16. Nxc8 Rbxc8 17. c3 Qc6 18. Rfe1 d5 19. f4 Bc7 20. e5 Nd7 21. a4 {½-½ (21) Svrsek,R (2373)-Paleckis,E (2429) Remote email 2014}) 10... b5 11. f4 {Hoping for e5.} Be7 $146 ({Predecessor:} 11... e5 12. f5 Rb8 13. Qe1 Be7 14. Ng3 Nb4 15. Qe2 Bc5 16. Bxc5 Qxc5+ {1-0 (41) Medvedyk,V-Pokotylo,M Lvov 2011}) 12. e5 {The position is equal.} Ne8 $1 13. Ng3 (13. Nd4 $11) 13... g6 14. a4 bxa4 (14... b4 $5 {[%cal Rb4c3]} 15. Nce4 f5 16. exf6 Nxf6 $11) 15. Nxa4 Rb8 16. c3 d6 17. exd6 $1 Nxd6 18. Qe2 a5 19. Ne4 Nf5 20. Bc5 Rd8 21. Rf2 (21. g4 $5 {[%cal Rg4f5]} Nd6 22. Qf2 $11) 21... Bh4 22. Rf3 Ng7 23. Bb5 f5 24. Nf2 Ne7 ({Black should try} 24... e5 $1 $15) 25. Ba6 $14 Bd7 26. Bd4 (26. Qe5 $11 Qxe5 27. fxe5) 26... Bc6 $15 27. Qc4 $2 {[#]} ({Better is} 27. Rd3 $15) 27... Rxd4 $1 $19 28. cxd4 Qa7 29. Nc5 Bxf3 ({Weaker is} 29... Rxb2 30. Nfd3 $11) 30. gxf3 {intending Nfd3.} Bxf2+ ({Less strong is} 30... Rxb2 31. Nfd3 $15) 31. Kxf2 Rxb2+ 32. Kg1 Rb4 33. Qa2 Rxd4 34. Qxa5 Rd5 ({Don't play} 34... Rxf4 35. Be2 $19) 35. Rc1 Nh5 36. Qb5 Kf7 {aiming for ...Qc7.} 37. Bb7 $2 {[#]} (37. Qb7 Qxb7 38. Bxb7) 37... Qa3 {Precision: White = 40%, Black = 65%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Erenburg, Sergey"]
[Black "Cruz, Cristhian"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "2550"]
[BlackElo "2558"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,85,36,31,43,26,39,27,29,29,18,0,31,23,31,18,29,28,24,29,77,75,64,61,66,64,64,25,37,30,31,20,22,12,23,0,13,8,9,17,13,28,23,28,139,129,147,162,170,122,134,146,189,183,233,221,514,514,507,483,515,498,496,463,593,585,1143,1073,1308,495]} 1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. c3 Nc6 6. Bd3 {C03: French Tarrasch: Unusual Black 3rd moves} Nh6 (6... h5 7. Ndf3 Bd7 8. Ne2 cxd4 9. cxd4 Nb4 10. Bb1 Bb5 11. O-O Rc8 12. Re1 g5 13. Nc3 Ba6 {1-0 (46) Blomqvist,E (2546)-Eljanov,P (2755) Malmo 2017}) 7. Ndf3 cxd4 8. cxd4 Nf5 9. Ne2 Qb6 10. O-O {LiveBook: 16 Games} Bd7 {[%cal Rf5d4]} 11. Kh1 (11. Bxf5 $5 exf5 12. Bg5 $14) 11... Rc8 ({Not} 11... Ncxd4 $2 12. Nexd4 Nxd4 13. Be3 $18) 12. Rb1 (12. Bd2 {is more complex.} O-O 13. b4 g6 14. Rb1 a6 15. Bc3) 12... Nb4 ({Reject} 12... Ncxd4 13. Nfxd4 Rxc1 14. Rxc1 $16) ({Avoid the trap} 12... Nfxd4 $2 13. Nexd4 Nb4 14. Be3 $18) 13. Bxf5 $1 exf5 {[#]} 14. Nc3 $146 Be6 (14... Bb5 $5) 15. Bg5 Bf8 16. a3 Nc6 17. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} h6 18. Bd2 Be7 {[#]} 19. b5 $1 {[%cal Rb5c6]} Nb8 20. Na4 Qd8 21. Nc5 Rc7 22. Bb4 O-O 23. Rc1 b6 24. Nxe6 fxe6 25. Qd2 $36 {[%mdl 2048] White fights for an advantage.} Rf7 26. g3 Bxb4 27. Qxb4 Qc8 28. Qb2 a6 29. a4 axb5 30. axb5 Kh7 (30... Rxc1 $1 $11 {keeps the balance.} 31. Rxc1 Rc7 32. Rxc7 Qxc7) 31. h4 Rfd7 32. Kg2 Qe8 33. Rxc7 Rxc7 34. Rc1 Rxc1 35. Qxc1 Qd7 36. h5 g5 $2 {[#]} (36... Qe8 {was necessary.} 37. Nh4 Qd8) 37. hxg6+ $18 {White is clearly winning.} Kxg6 38. Ng1 Kg7 39. Nh3 Qd8 40. Nf4 Kf7 41. Nh5 Kg6 42. Nf6 Nd7 43. Qc6 {Precision: White = 74%, Black = 40%.} (43. Nxd7 $142 Qxd7 44. Qc6) 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Vera Siguenas, Deivy"]
[Black "Zapata, Alonso"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2526"]
[BlackElo "2420"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,66,46,34,52,56,53,12,11,28,39,40,46,33,36,36,64,27,25,17,24,29,41,13,29,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,-81,-82,-86,-68,-159,-154,-191,-178,-1317,-650]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. g3 d6 7. Bg2 a6 8. O-O Be7 9. Re1 Nxd4 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} (9... Bd7 10. Nxc6 Bxc6 11. Qg4 h5 12. Qe2 h4 13. a4 Nf6 14. a5 Kf8 15. Be3 e5 16. Nd5 Nxd5 17. exd5 Bb5 18. c4 Qxc4 19. Qxc4 Bxc4 20. Rec1 Bd3 {½-½ (42) Navara,D (2702)-Movsesian,S (2705) Prague 2011}) 10. Qxd4 Nf6 11. a4 O-O {The position is equal.} 12. a5 e5 $146 ({Predecessor:} 12... Bd7 13. h3 Bc6 14. Be3 Nd7 15. Qd2 b6 16. axb6 Nxb6 17. Qd4 Rfb8 18. Red1 {1-0 (52) Hakki,I (2451)-Sachdev,T (2240) Abu Dhabi 2004}) 13. Qd3 Be6 14. Be3 Rac8 15. Rec1 Qc6 16. Qd2 (16. Nd5 $5 {[%cal Rd5e7]} Qe8 17. Nxe7+ Qxe7 18. b3 $16) 16... Bd8 17. h3 b5 18. axb6 Bxb6 19. Bxb6 Qxb6 20. Nd5 Bxd5 21. exd5 Qxb2 22. Rxa6 Rfd8 23. Rc6 Kf8 24. Qe3 Rb8 25. Rd1 {[%cal Bc1d1,Bd1d3,Bd3a3,Ba3a7][%mdl 32]} h6 26. Rd3 Rb4 27. Ra3 e4 28. c4 Qc2 $36 {[%mdl 2048] Black has some pressure.} 29. Kh2 (29. Ra1 $11) 29... Rb2 $17 ({Reject} 29... Rxc4 $6 30. Qb6 $14) 30. Ra7 {Threatens to win with Rcc7.} Kg8 31. Rcc7 {[#]} ({White should play} 31. Raa6 $15) 31... Rf8 $1 ({Stronger than} 31... Qxf2 32. Qxf2 Rxf2 33. Kg1 $11) 32. Re7 {[%cal Rg2e4]} Qxc4 33. Bxe4 $2 (33. Ra1) 33... Qf1 {Precision: White = 45%, Black = 76%.} (33... Nxe4 $142 34. Rxe4 Qf1) 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Garcia Pantoja, Roberto"]
[Black "Escalante Ramirez, Brian Sebasti"]
[Result "1/2-1/2"]
[ECO "B66"]
[WhiteElo "2500"]
[BlackElo "2338"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,68,0,1,-31,2,-18,-31,-16,23,29,31,4,14,0,0,0,29,-14,0,-21,-21,-16,0,-37,0,-38,0,0,0,0,18,22,11,-42,22,-95,-95,-93,-44,-105,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Nxc6 bxc6 10. Bf4 d5 11. Qe3 Bb4 12. a3 {B66: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 h6} (12. Be2 O-O 13. e5 Nd7 14. h4 c5 15. Bxh6 gxh6 16. Qxh6 Nxe5 17. Rh3 Bxc3 18. bxc3 Ra7 19. Rg3+ Ng6 20. h5 Qh4 21. Rg4 Qh2 22. Bd3 {1-0 (22) Karjakin,S (2785)-Ivanchuk,V (2747) Doha 2016}) 12... Ba5 13. Be2 O-O 14. e5 Nd7 15. Qg3 Bc7 {LiveBook: 13 Games} 16. Na4 (16. Bxh6 {looks sharper.} Bxe5 17. f4 Bf6 18. h4 Qa5 19. h5) 16... f5 $146 (16... Kh8 {seems wilder.} 17. Kb1 Rb8 18. c4 Qe7 19. h4 a5) ({Predecessor:} 16... Kh8 17. Qe3 Rb8 {1-0 (63) Teichmann,C (2481)-Miletic,A (2398) ICCF email 2008}) 17. exf6 {[%csl Gf6][%cal Rg3g7] [#]} (17. Bxh6 $5 {[%cal Rg3g7]} Bxe5 18. Bf4 Bxf4+ 19. Qxf4 $11) 17... Bxf4+ 18. Qxf4 Qxf6 (18... e5 {is interesting.} 19. Qe3 Qxf6 20. Rhf1 a5 21. Kb1 Ba6) 19. Qxf6 Rxf6 20. f3 c5 21. c4 Bb7 22. Bd3 d4 23. Rde1 Rb8 24. Be4 Bxe4 25. Rxe4 Rg6 26. Re2 Kf7 27. Rhe1 Ke7 28. Kc2 Kd6 29. Rd1 Nb6 30. Nxb6 Rxb6 31. Rd3 (31. b4 $11) 31... Rf6 (31... a5 $15) 32. Rb3 (32. b4 $1 $11 {remains equal.}) 32... Rxb3 $17 33. Kxb3 Rf4 34. Rd2 (34. Kc2 $15) 34... Ke5 {Precision: White = 24%, Black = 13%.} ({Black should play} 34... g5 $17 35. Kc2 a5) 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Barrientos, Sergio E"]
[Black "Cordova, Emilio"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2463"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,106,0,0,-10,-2,-28,-32,-65,-54,-60,-69,-50,-54,-78,-75,-103,-97,-125,-102,-133,-96,-103,-94,-104,-94,-167,-130,-169,-151,-181,-197,-189,-162,-182,-73,-88,-90,-156,-156,-256,-261,-237,-125,-139,-75,-273,-284,-275,-278,-251,-256,-308,-308,-390,-338,-331,-316,-323,-336,-547,-421,-577,-559,-677,-637,-516,-664,-642,-660,-625,-579,-617,-634,-924,-904,-1417,-1321,-29980,-29979,-29985,-29986,-29987,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29992,-29986,-29953,-6319,-2826,-2185,-29990,-29991]} 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 c5 5. Nc3 cxd4 6. Nxd4 Bb7 7. Ndb5 {E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7} (7. Bg5 a6 8. e3 Be7 9. Rc1 d6 10. Nf3 Nbd7 11. Be2 O-O 12. O-O Qc7 13. Nd2 Rac8 14. b4 Rfd8 {0-1 (69) Adhiban,B (2671)-Iturrizaga Bonelli,E (2650) Monzon 2016}) 7... d6 $1 8. Bg5 (8. f3 {keeps more tension.} a6 9. Nd4 d5 10. cxd5 exd5 11. g4) 8... a6 9. Bxf6 {Black is slightly better.} gxf6 10. Nd4 f5 11. e3 Nd7 12. Nf3 $146 ({Predecessor:} 12. Qa4 Qc7 13. Rg1 Bg7 14. f4 h5 {½-½ (23) Suba,M (2500)-Lukacs,P (2465) Tuzla 1981}) 12... Rg8 13. g3 Rc8 14. Be2 Ne5 15. b3 Qc7 {Strongly threatening ...d5!} 16. O-O Qc6 {[%cal Re5f3]} 17. e4 fxe4 18. Nd4 (18. Nxe5 $17 dxe5 19. b4) 18... Qc5 19. Na4 Qc7 $1 20. Qd2 Rg6 21. Rad1 Ba8 22. Bh5 Qb7 (22... Rh6 $19 {is more deadly.} 23. Be2 Bb7) 23. Bxg6 $17 hxg6 24. Qe2 (24. Qe3 $142) 24... Bg7 {[%mdl 1024] Black has strong compensation.} (24... e3 25. f3 $11) 25. Qe3 (25. h3 $17 {is a better defense.}) 25... b5 $1 $19 {[%cal Rb5a4]} 26. Nb2 Rc5 ({Not} 26... bxc4 27. Nxc4 Nxc4 28. bxc4 $15) (26... Ng4 $19 27. Qe2 e3 $1 {[%mdl 512]}) 27. h3 $17 Bf6 ({Resist} 27... bxc4 28. Nxc4 Nxc4 29. bxc4 $15) (27... Kf8 $142 28. Rd2 Nd3 $1 {[%mdl 512]}) 28. b4 $2 (28. Kh2 $17) 28... Nxc4 $19 29. Nxc4 Rxc4 30. Ne2 d5 31. h4 e5 {aiming for ...d4.} 32. Qh6 Ke7 33. g4 {[#] Hoping for g5.} Qc8 $1 {[%cal Rc8g4]} 34. g5 Bh8 35. Ng3 $2 (35. h5 {keeps fighting.} e3 36. hxg6 Qg4+ 37. Ng3) 35... Qg8 36. Rc1 Bb7 37. h5 Bg7 38. Nf5+ gxf5 39. Qb6 Qc8 40. Rxc4 bxc4 41. h6 Bh8 42. Kh2 Qc6 43. Qa7 d4 44. Rg1 {[#]} e3 $1 45. fxe3 Qe4 {[%cal Re4h4]} 46. Kh3 Qxe3+ 47. Kh4 Qe4+ 48. Kh3 f4 {[%cal Bf5f4,Bf4f3,Bf3f2][%mdl 32]} 49. Qc5+ Ke8 50. Kh4 Bc6 51. Qd6 f3+ 52. Rg4 Qd5 53. Qc7 f2 {Precision: White = 31%, Black = 74%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Pulvett Marin, Daniel"]
[Black "Herrera, Juan Sebastian"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2437"]
[BlackElo "2220"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,63,2,8,-2,24,-4,5,0,-1,-9,-8,-18,-22,-15,0,-28,-18,-37,-20,-38,-22,-19,0,-19,15,0,52,55,93,88,225,236,212,120,116,92,332,282,790,801,770,768,937,995,1309,1286,1478,1471,1427,1322,2699,2420,29995,29996]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. b4 c6 7. a4 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} (7. Bb2 Bg4 8. h3 Bxf3 9. gxf3 Nbd7 10. f4 a5 11. b5 a4 12. Rc1 Qa5 13. Qd2 dxc4 14. bxc6 bxc6 15. Bxc4 c5 {½-½ (50) Kamsky,G (2763)-Gelfand,B (2773) Beijing 2013}) 7... Nbd7 8. cxd5 Nxd5 $146 ({Predecessor:} 8... cxd5 9. Qb3 e5 10. Nxd5 Nxd5 11. Qxd5 exd4 12. Nxd4 Qe7 13. Bd2 Re8 14. Be2 Nb6 {0-1 (30) Zenyuk,I (2153)-Shahade,J (2361) San Diego 2004}) 9. Nxd5 {The position is equal.} cxd5 10. a5 e5 11. Be2 e4 12. Nd2 Qg5 13. g3 Nf6 14. h3 h5 15. b5 Rd8 16. Ba3 Ne8 17. Rc1 h4 18. g4 f5 (18... Be6 $11) 19. Qb3 $14 Kh7 20. f4 $36 {[%mdl 2048] White is on the roll.} exf3 (20... Qf6 $16) 21. Nxf3 $18 Qf6 22. g5 (22. Ne5 $18) 22... Qe6 $16 23. Nxh4 Nd6 $2 {[#]} (23... Qe4 $16 {keeps fighting.} 24. Nf3 f4) 24. Ng2 $1 $18 Nc4 $2 (24... a6 25. bxa6 bxa6) 25. Rxc4 ({Weaker is} 25. Bxc4 dxc4 26. Qxc4 Qe8 $16) 25... dxc4 26. Bxc4 Qe4 27. O-O a6 28. Rf4 axb5 29. Rxe4 fxe4 30. Qxb5 Bxh3 31. Nf4 Bf5 32. Qb2 {Precision: White = 49%, Black = 16%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Fernandez, Fernando"]
[Black "Chumpitaz, Ann"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2416"]
[BlackElo "2163"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,48,73,70,76,68,114,123,181,174,281,108,105,104,179,156,150,150,258,145,206,204,243,245,218,200,450,446,749,660,930,865,1287,1262,1576,1551,1418]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 Nf6 7. f4 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} Nxd4 (7... Bb4 8. Ndb5 Qa5 9. e5 Nd5 10. Bd2 Nxc3 11. Bxc3 O-O 12. Qd2 a6 13. Bxb4 Qxb4 14. Qxb4 Nxb4 15. Nd4 {½-½ (15) Motylev,A (2656)-Svidler,P (2751) Tallinn 2016}) 8. Bxd4 {LiveBook: 5 Games} Bb4 9. Qf3 {White is better.} O-O $146 ({Predecessor:} 9... b6 10. O-O-O Bb7 11. Bd3 Bxc3 12. Bxc3 O-O-O 13. Bd4 d5 14. e5 Ne4 {0-1 (54) Mammadzada,G (2348)-Kantane,A (2230) Riga 2017}) 10. O-O-O a6 (10... Ne8 $16 11. Nb5 Qb8) 11. Bd3 $18 d6 (11... Ne8 $142 12. Kb1 Bc5) 12. Qg3 $2 (12. Bxf6 $18 gxf6 13. Ne2) 12... Ne8 $16 13. e5 d5 (13... f5 $16 {might work better.}) 14. Qh3 {[%csl Gd3][%cal Rh3h7] [#]} f5 15. g4 $40 {[%mdl 128] Hoping for gxf5. White has strong attack.} Bc5 (15... Bxc3 $16 {was worth a try.} 16. Bxc3 g6) 16. Ne2 (16. gxf5 $18 Bxd4 17. fxe6) 16... b5 (16... b6 $16 {keeps fighting.} 17. gxf5 exf5) 17. Rhg1 $18 b4 18. gxf5 exf5 19. Rg5 Be6 $2 (19... g6 20. Qg2 Qc6) 20. Rdg1 {White is clearly winning.} Rc8 (20... Kh8 $142 21. Rh5 Bg8 22. Bxf5 Rxf5) 21. Qh6 Qe7 22. Rh5 g6 23. Bxc5 {Threatening mate with Rxg6+!} Rxc5 {[#]} 24. Rxg6+ $1 {[%mdl 512]} Kh8 {Precision: White = 66%, Black = 22%.} (24... hxg6 25. Qh8+) 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Prasca Sosa, Rafael Felipe"]
[Black "Kaidanov, Gregory S"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2400"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,75,22,25,33,12,12,12,20,16,10,0,0,0,0,0,0,0,0,-1,0,0,0,0,-10,-10,0,0,0,0,0,0,0,0,12,2,6,6,2,1,2,2,2,2,6,2,2,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. O-O O-O 8. c3 Bb7 {C84: Closed Ruy Lopez: Unusual White 6th moves} (8... d6 9. Nbd2 Na5 10. Bc2 c5 11. Re1 Nc6 12. Nf1 h6 13. Ng3 Be6 14. h3 Qc7 15. Nh4 Nxe4 16. Rxe4 d5 17. Rg4 Bxg4 18. Qxg4 Bxh4 19. Qxh4 f5 20. f4 e4 21. dxe4 fxe4 {½-½ (61) Amonatov,F (2581)-Filippov,A (2591) Almaty 2015}) 9. Bg5 h6 {The position is equal.} 10. Bh4 d6 11. Nbd2 Nh5 $146 ({Predecessor:} 11... Nb8 12. Re1 Nbd7 13. d4 Re8 14. a4 c6 15. Bc2 Qc7 16. Bg3 {½-½ (41) Langers,A (2168)-Schwalen,P (2077) Germany 2013}) 12. Bg3 Nxg3 13. hxg3 Na5 14. Bc2 c5 15. Re1 Bf6 16. Nf1 d5 17. d4 cxd4 18. cxd4 dxe4 19. Nxe5 Re8 20. Bxe4 Bxe4 21. Rxe4 Nc4 {[%cal Rc4e5]} 22. Qb3 Nxe5 23. Rae1 Qd6 24. Qe3 {[#]} Nf3+ $1 {[%mdl 512]} 25. Qxf3 Rxe4 26. Rxe4 Rd8 27. Ne3 Bxd4 28. Nf5 Qf6 $1 29. Nxd4 Rxd4 30. Qxf6 {[#] Intending Re8+ and mate.} Rd1+ 31. Kh2 {Re8+ would kill now.} gxf6 $11 {[%mdl 4096] Endgame KR-KR} 32. a4 bxa4 33. Rxa4 Rd6 34. Rb4 f5 35. g4 fxg4 36. Rxg4+ Kf8 37. Rb4 Ke7 38. Kg3 {Precision: White = 80%, Black = 80%.} 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Ynojosa Aponte, Felix Jose"]
[Black "Kovalyov, Anton"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2395"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "212"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,212,21,12,7,17,3,4,0,10,0,0,-24,-8,-26,-13,-26,-21,-25,-27,-43,-42,-42,-42,-43,-43,-43,-35,-43,-36,-29,-29,-36,-36,-29,-29,-29,-29,-29,-29,-58,-51,-58,-42,-57,-28,-65,-56,-56,-47,-81,-47,-106,-47,-87,-47,-80,-47,-72,-39,-98,-39,-47,0,-47,-47,-54,-54,-54,-47,-54,-47,-54,-47,-54,-47,-54,-47,-54,-47,-54,-54,-54,-54,-54,-34,-34,-34,-40,-34,-34,-34,-34,-34,-41,-45,-48,-34,-60,-52,-54,-49,-150,-34,-55,-34,-34,0,-57,-34,-46,-51,-85,-87,-84,-34,-87,-34,-113,-34,-34,-34,-34,-34,-34,-34,-34,-34,-34,-34,-41,-34,-34,-34,-50,-41,-58,-60,-41,-34,-76,-58,-66,-68,-69,-41,-60,-34,-41,-41,-37,0,0,0,0,0,0,120,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-106,-99,-81,-89,-81,-74,-88,-87,-180,-158,-184,-169,-29991,-29991,-29992,-29993,-29993,-29994,-29994,-29994,-29994,-29995,-29995,-29993,-29993,-29994,-29994,-29995,-29995,-29993,-29996,-29995]} 1. c4 e6 2. Nc3 Bb4 3. e4 Ne7 4. Nf3 O-O 5. a3 Bxc3 $1 6. dxc3 {A13: English Opening: 1...e6} d6 7. Bd3 (7. c5 $5) 7... Nd7 8. Bc2 $146 {The position is equal.} ({Predecessor:} 8. O-O b6 9. Bg5 h6 10. Bh4 Qe8 11. Re1 {0-1 (61) Timofeev,A (2601)-Riazantsev,A (2651) Sochi 2016}) 8... b6 9. Qe2 Bb7 10. Bg5 h6 11. Bxe7 (11. Bd2 {is more complex.} Ng6 12. O-O e5 13. g3 a5 14. Ne1) 11... Qxe7 12. O-O-O a5 13. h4 e5 14. h5 a4 15. Nh4 Nc5 16. Nf5 Qg5+ (16... Qd8 {seems wilder.} 17. Kb1 Bc8 18. Qd2 Qf6 19. Rhg1 Bd7) 17. Kb1 Bc8 18. Ne3 Bd7 19. g3 Rab8 20. Nd5 Qd8 21. f4 Re8 22. f5 f6 23. Bd3 Rf8 24. g4 Bc6 25. Nb4 Qd7 26. Rh2 Kf7 27. Kc2 Ke7 28. Kd2 Ra8 29. Ke3 Ra5 30. Kf3 (30. Nxc6+ $15 Qxc6 31. Bc2) 30... Kd8 ({Black should try} 30... Nxd3 $17 31. Qxd3 Kf7) 31. Qe3 Kc8 32. Rf2 Kb7 33. Qe2 Ka7 34. Qe3 (34. Bb1 $15) 34... Nb7 ({Black should play} 34... Nxd3 $17 35. Qxd3 Bb7) 35. Bf1 Nc5 36. Nxc6+ (36. Bd3 $5) 36... Qxc6 37. Rfd2 Kb7 38. Rd5 Rfa8 39. Be2 Qe8 40. Bf1 Qf7 41. Be2 Qe7 42. Bf1 Rd8 43. Qd2 Rd7 44. Bg2 Ra8 45. Kg3 Rad8 {Threatens to win with ...c6.} (45... Nb3 $5 {[%cal Rb3d2]} 46. Qd3 Nc5 $15) 46. Qe2 c6 47. R5d2 Nb3 48. Rd3 Ra8 {[%cal Bd8a8,Ba8a5,Ba5c5][%mdl 32]} 49. Bf1 Ra5 50. Rf3 Kc7 51. Kh3 Rc5 52. Rf2 Qf7 53. Kh2 Kd8 54. Kh3 Ke7 55. Kh2 (55. Qc2 $15) 55... Qg8 (55... Na5 $1 $17 {[%cal Ra5c4]} 56. Qf3 Nxc4) 56. Kg1 Qa8 57. Rh2 Qg8 58. Rf2 Kd8 59. Rh2 Kc7 60. Rf2 Qa8 61. Qc2 Qb7 62. Qe2 (62. Kh2 $15) 62... Qb8 (62... Na5 $17) 63. Rh2 (63. Qc2 $15) 63... Qf8 (63... Na5 $1 $17 64. Qf3 Nxc4 65. Bxc4 Rxc4) 64. Rf2 $15 Ra5 65. Qe3 Ra8 66. Kh1 Re8 67. Rh2 Qe7 68. Rf2 Qd8 69. Rh2 Rf8 70. Rf2 Qa8 71. Rh2 Qa5 72. Qe2 Qc5 73. Rh3 Rfd8 74. Kh2 Na5 75. Rg3 Rb8 76. Rg2 Nb3 77. Rg3 Qa5 78. Qe3 Rbd8 79. Qe2 d5 80. cxd5 cxd5 81. exd5 Rxd5 82. Qc4+ Kb8 (82... Qc5 $1 $11 {keeps the balance.} 83. Rxd5 Rxd5) 83. Rxd5 (83. Rgd3 $16 Rxd3 84. Rxd3) 83... Qxd5 $11 84. Qxa4 Nd2 85. Bg2 (85. Be2 $5 {[%cal Rg3d3]} Qc5 86. Rg2 $11) 85... e4 86. Qb4 Rd6 {White must now prevent ...Qe5.} 87. c4 Qe5 88. Kh3 Qd4 89. Qb5 Kc7 90. c5 bxc5 91. Qa5+ {[#]} (91. b3 $1 $11) 91... Kb7 $1 $17 92. Qb5+ Rb6 93. Qe8 Rxb2 94. Qe7+ Kb6 95. Qxg7 {[#]} (95. Qf8 $17) 95... Nf3 $1 $19 {[%cal Rf3g1][%mdl 512]} 96. Bxf3 exf3 97. Rxf3 $2 $17 {[%mdl 4096] Endgame KQR-KQR} (97. Qf8 $19) 97... Rb1 {Black mates.} 98. Qf7 Rh1+ 99. Kg3 Qe5+ 100. Rf4 Qe3+ 101. Rf3 Qe1+ 102. Rf2 Qg1+ 103. Kf3 Rh3+ 104. Ke2 Qxg4+ 105. Ke1 Qe4+ 106. Kd1 Rh1+ {Precision: White = 41%, Black = 49%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Cori Quispe, Kevin Joel"]
[Black "Castaneda, Jorge Luis"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2390"]
[BlackElo "2155"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,55,39,20,77,60,78,66,106,88,116,118,121,100,104,107,123,96,175,118,111,114,150,93,158,90,91,79,96,103,101,59,101,96,582,592,591,582,600,599,29996,29997]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Nc6 (5... Bxc5 6. Nf3 Ne7 7. Bd3 Ng6 8. O-O Nc6 9. b4 Bb6 10. Bb2 Nf4 11. c4 Nxd3 12. Qxd3 dxc4 13. Qxc4 {1-0 (30) Karjakin,S (2783)-Topalov,V (2741) Shamkir 2017}) 6. Nf3 {B12: Caro-Kann: Advance Variation} Bxc5 7. b4 Bb6 8. Bb2 Nge7 9. Bd3 {LiveBook: 46 Games} h6 (9... Ng6 $11) 10. O-O O-O $146 ({Predecessor:} 10... a5 11. b5 Nb8 12. c4 Nd7 13. cxd5 Nxd5 {1-0 (47) Banzea,A (2202)-Bogdan,D (2384) Arad 2015}) 11. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4d6][%mdl 32]} Nf5 12. c4 dxc4 13. Nxc4 Ncd4 14. Nxd4 Bxd4 15. Bxd4 Nxd4 16. Nd6 Nc6 (16... Nf5 $16) 17. f4 (17. Qe2 $18) 17... Qb6+ 18. Kh1 Bd7 19. Rf3 (19. b5 $142 Ne7 20. a4) 19... Ne7 (19... Nd4 $142) 20. Rg3 (20. Bc2 $142) 20... Nf5 $16 21. Bxf5 exf5 22. Qh5 {Threatening mate with Qxh6.} Qf2 23. Rf3 $40 {[%mdl 128] Black needs to defend precisely.} ({Wrong is} 23. Qxh6 $2 Qxg3 24. hxg3 gxh6 $19) 23... Qd4 24. Raf1 {Rg3 is the strong threat.} f6 $2 {[%mdl 8192]} (24... Be6 $16 {is a better chance.}) 25. Rg3 $18 {White threatens Qg6 and mate.} fxe5 {[#]} 26. Rd1 $1 {[%cal Rd1d4]} Qb2 27. Nc4 {White wants to mate with Rxg7+!} Qc2 {[#] And now ...Be8 would win.} 28. Rxg7+ $1 {[%mdl 512] Precision: White = 62%, Black = 24%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Umetsubo, Cesar Hidemitsu"]
[Black "Peralta, Fernando"]
[Result "0-1"]
[ECO "E27"]
[WhiteElo "2381"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,74,29,31,31,29,20,29,23,29,19,22,31,43,43,43,43,43,43,43,48,46,33,29,14,14,6,17,8,23,-56,-58,-88,-80,-70,-76,-133,-140,-160,-145,-161,-133,-132,-120,-131,-125,-307,-283,-564,-529]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 d5 7. e3 c5 8. cxd5 exd5 9. Bd3 b6 10. Ne2 Ba6 11. O-O Re8 12. Ng3 Bxd3 13. Qxd3 Nc6 14. Bb2 c4 15. Qd2 {E49: Nimzo-Indian: Rubinstein: 5 Bd3 d5 6 a3 Bxc3+ 7 bxc3} (15. Qe2 h5 16. Rae1 h4 17. Nf5 Ne7 18. Nxh4 g5 19. e4 gxh4 20. Bc1 Qd7 21. Bg5 Nh7 22. Bxh4 Ng6 {½-½ (38) Navara,D (2727)-Aleksandrov,A (2593) Wroclaw 2014}) 15... h5 16. Rae1 h4 17. Nh1 {White has an edge.} b5 18. Nf2 a5 19. e4 {[%cal Be3e4,Be4e5][%mdl 32]} Rb8 $146 ({Predecessor:} 19... b4 20. axb4 axb4 21. cxb4 Qb6 22. Bc3 h3 23. e5 hxg2 24. Kxg2 Nh7 25. Ng4 Ne7 26. Kh1 Ra3 27. Rg1 Qe6 28. f4 {½-½ (28) Andersen,J (2205)-Solar,J (2371) ICCF email 2009}) 20. e5 Nh7 21. f4 b4 22. axb4 axb4 23. Nd1 f5 24. Ne3 Qd7 25. Qf2 bxc3 (25... h3 $5) 26. Bxc3 Rb3 27. Rc1 h3 28. Qf3 (28. Kh1 $11) 28... hxg2 $15 29. Rf2 Ne7 $1 30. Rxg2 Nf8 $1 31. Qh5 (31. h3 $142) 31... Reb8 {[%cal Be8b8,Bb8b3,Bb3b1][%mdl 32]} 32. Kh1 {[#]} Rb1 $1 {[%cal Rb1c1]} 33. Rcg1 {[#]} Rxg1+ $1 34. Rxg1 Rb3 35. Bd2 Qe6 36. Rg5 $2 (36. Qg5 $17 Nfg6 37. Re1) 36... Rb1+ $19 37. Nd1 $2 (37. Rg1 Qb6 38. Nc2) 37... Qb6 {Precision: White = 39%, Black = 92%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Zavarce, Oscar Enrique"]
[Black "Cuartas, Jaime Alexander"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2364"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,82,22,53,21,83,6,68,47,90,65,100,97,90,111,95,40,118,93,102,104,95,77,80,79,77,75,78,72,94,59,108,91,139,132,135,95,87,0,0,0,0,5,16,0,43,13,14,18,9,0,0,0,0,-114,-114,-177,-181,-181,-189,-180,-187,-218,-182,-443,-440,-29995,-1479,-1214,-1256,-1089,-1070,-1063,-1057,-29998,-29999]} 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 Bb4+ (5... d6 6. N1c3 a6 7. Na3 Be6 8. g3 f5 9. Bg2 Nf6 10. O-O Be7 11. e4 fxe4 12. Nxe4 O-O {½-½ (69) Giri,A (2768)-Jobava,B (2717) Tashkent 2014}) 6. Bd2 $146 {Strongly threatening Bxb4. A30: Symmetrical English: Double Fianchetto and Hedgehog} ({Predecessor:} 6. N1c3 Nf6 7. a3 Bxc3+ 8. Nxc3 O-O 9. g3 d6 10. Bg2 Be6 11. b3 Qb6 12. O-O Nd4 {1-0 (45) Stoer,A (2140)-Schwarm,G (2010) Bayern 1996}) 6... Bc5 (6... Be7 $11) 7. Be3 (7. N1c3 $1 $16) 7... Bxe3 (7... Bb4+ $1 $11 8. N1c3 Nge7) 8. fxe3 {And now Qd6 would win.White is slightly better.} Kf8 9. g3 h5 10. Bg2 h4 11. N1c3 Nf6 12. Qd2 (12. Nd6 $16) 12... Ne8 (12... d5 $1 $14) 13. Rf1 d6 14. O-O-O ({But not} 14. Qd5 Qe7 $15) 14... Be6 15. Nxd6 Nxd6 16. Qxd6+ Qxd6 17. Rxd6 Ke7 18. c5 Rac8 19. Bd5 Nd8 20. b4 Bh3 21. Rd1 $1 b6 22. Bc4 Nb7 {[#]} 23. R6d2 ({Better is} 23. Nd5+ $1 $16 Kf8 24. Nxb6 axb6 25. Rxb6) 23... bxc5 $11 24. b5 Rh6 25. Bd5 Nd6 26. e4 Bg4 27. a4 (27. Bc6 $5 {[%cal Rc3d5]} hxg3 28. hxg3 $11) 27... hxg3 28. hxg3 Rh3 29. Bc6 Rxg3 30. Nd5+ Kf8 31. Nf6 (31. Rh1 $11 Rh3 32. Rxh3 Bxh3 33. Ne3) 31... Nc4 $36 {[%mdl 2048] Black has strong initiative.} 32. Nd7+ {[#]} (32. Nxg4 $17 Nxd2 33. Rxd2 Rxg4 34. Rd7) 32... Ke7 $1 $19 33. Rd3 Rxd3 34. Rxd3 Bxe2 35. Rc3 Kd6 {...Rh8 is the strong threat.} 36. Rg3 $2 (36. Rc2 Bg4 37. Rxc4 Bxd7 38. Bxd7 Kxd7 39. Rc2) 36... Rh8 37. Rxg7 (37. Bd5 $19 Rh1+ 38. Kc2) 37... Bd3 (37... Rh1+ $142 38. Kc2 Bd1+ 39. Kc3 Rh3+ 40. Rg3 Rxg3+ 41. Kxc4 Be2#) 38. Rg1 Rh2 {( -> ...Ra2)} 39. Rd1 Rc2+ 40. Kb1 Nd2+ 41. Ka1 Nb3+ {Precision: White = 37%, Black = 42%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Echavarria, Johann"]
[Black "Hungaski, Robert Andrew"]
[Result "0-1"]
[ECO "C97"]
[WhiteElo "2309"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,86,20,32,41,60,32,43,14,17,9,22,5,20,21,41,42,37,35,59,52,60,0,55,8,41,23,29,20,20,18,8,8,8,12,8,-20,-16,-23,-27,-24,0,-79,-52,-76,-78,-100,-69,-76,-92,-72,-7,-500,-84,-107,-83,-484,-476,-3009,-3042,-29991,-29992,-29993,-29991,-29994,-29995]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. b3 {C97: Closed Ruy Lopez: Chigorin Defence: 11 d4 Qc7, sidelines} Nb7 14. Nbd2 (14. c4 b4 15. Nbd2 g6 16. Nf1 Nh5 17. Bh6 Ng7 18. g4 f6 19. a3 a5 20. Ng3 Rab8 {½-½ (53) Hou,Y (2667)-Grandelius,N (2646) Fagernes 2016}) 14... c4 15. b4 {White is slightly better.} a5 16. a3 Ra6 $146 ({Predecessor:} 16... a4 17. Nf1 h6 18. N3h2 Nh7 19. Ng3 Bg5 20. Nf5 Bxf5 21. exf5 Bxc1 22. Rxc1 {1-0 (113) Vea,O (2217)-Briseid,H (2159) Norway 2014}) 17. Rb1 axb4 18. cxb4 g6 19. Ra1 Nh5 20. Nb1 Ng7 21. Nc3 Rfa8 22. Bb2 (22. Qe2 $14) 22... f6 (22... Qb6 $11) 23. Qd2 Qb6 24. Ra2 Nd8 25. Rea1 Nf7 26. Bc1 f5 27. Qd1 f4 28. a4 Ne8 29. axb5 Rxa2 30. Rxa2 Rxa2 31. Nxa2 Qxb5 32. Qd2 (32. Qe2 $11) 32... g5 33. Qc3 h5 {[%cal Bh7h5,Bh5g4,Bg4g3,Bg3f2][%mdl 32]} 34. Nd2 g4 35. hxg4 hxg4 36. Nxc4 Nf6 ({Black should play} 36... Qa6 $17) 37. Na5 $2 {[%mdl 8192] [#]} (37. Bd3 $11 Qb8 38. Qb2) 37... Nh5 $2 (37... g3 $1 $19 {[%mdl 512] has better winning chances.} 38. Nc4 (38. fxg3 $2 Qb6+ 39. Be3 fxe3 $19) 38... gxf2+ 39. Kxf2 Qa6) 38. Qd3 {[#]} Qb6 $1 {And now ...g3 would win.} 39. Bb3 $2 {[%mdl 8192]} (39. Nc4 $17 {was the crucial defense.} Qa7 40. Qa3) 39... Bh4 $19 40. Qc2 (40. Be3 $142 fxe3 41. Qxe3 Qxe3 42. fxe3) 40... g3 {[%cal Rg3f2]} 41. Bc4 gxf2+ {Black mates.} 42. Kh2 Bg3+ 43. Kh1 Qd8 {Precision: White = 35%, Black = 45%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.15"]
[Round "8"]
[White "Avila Pavas, Santiago"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2056"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,18,8,9,37,38,34,27,23,23,41,-12,2,-8,2,0,2,-34,-12,-17,-4,-35,-31,-62,-51,-55,-39,-209,-198,-224,-237,-240,-235,-217,-108,-107,-97,-114,-120,-115,-108,-118,-102,-112,-93,-106,-87,-87,-84,-84,-60,-76,-4,-12,-4,-87,-62,-79,-71,-78,-78,-83,-77,-108,-77,-85,-93,-85,-17,-97,-89,-121,-117,-267,-265,-276,-273,-325,-340,-334,-318,-338,-314]} 1. d4 Nf6 2. Bf4 g6 3. e3 d6 4. Nf3 Nh5 5. Bg5 h6 6. Bh4 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} g5 7. Nfd2 (7. Bg3 Nd7 8. c4 Bg7 9. Nc3 Ndf6 10. Be2 c6 11. Qc2 a6 12. Nd2 Nxg3 13. hxg3 {0-1 (93) Bindrich,F (2590)-Kozul,Z (2613) Doha 2016}) 7... Ng7 8. Bg3 {White is slightly better.} Nf5 9. Bd3 h5 {aiming for ...h4.} 10. Bxf5 (10. Qf3 $14) 10... Bxf5 $11 11. h4 g4 12. Nc3 Bg7 13. O-O $146 ({Predecessor:} 13. Qe2) 13... Nd7 14. e4 Bg6 15. Nb3 e5 16. f4 gxf3 17. Rxf3 c6 18. Qd3 $2 {[#]} ({White should play} 18. d5 $15) 18... exd4 $1 $19 19. Nxd4 Qb6 20. Bf2 Ne5 21. Nf5 Bxf5 (21... Qxb2 $19 {is more deadly.} 22. Nxg7+ Ke7) 22. Bxb6 $17 Nxd3 23. Rxd3 axb6 24. exf5 d5 25. a3 Bf6 26. Re1+ Kf8 27. g3 Rg8 28. Kf2 Rg4 29. Nd1 Ra5 30. Rf3 Rb5 (30... Rd4 $17 {...Rd2+ is the strong threat.} 31. c3 Rd2+ 32. Ke3 Rg2) 31. b4 $11 Rc4 32. c3 {[#]} (32. Re2 $1 $11 {keeps the balance.}) 32... d4 $1 $17 {[%cal Rd4c3]} 33. cxd4 Bxd4+ 34. Kf1 Re5 35. Rxe5 Bxe5 {[%mdl 4096] Endgame KRB-KRN} 36. Kg2 Rc2+ 37. Rf2 Rc1 38. Rd2 c5 ({Black should try} 38... Ke7 $17) 39. Kf3 (39. Ne3 $11 {remains equal.}) 39... Ra1 40. bxc5 bxc5 41. Ne3 (41. Ke4 $17 Bxg3 42. f6) 41... Rxa3 $19 {Black has a decisive advantage.} 42. Ke4 Bd4 ({Don't take} 42... Bxg3 43. f6 $19) 43. Nd5 Rxg3 44. f6 {Now Ra2 and White clings on.} Rg1 45. Re2 Rf1 {Precision: White = 39%, Black = 61%.} 0-1

