[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Bachmann, Axel"]
[Black "Bacallao Alonso, Yusnel"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2653"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,66,16,10,49,39,95,106,111,120,133,117,121,77,77,64,75,76,62,55,89,62,83,85,85,77,109,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 d5 8. cxd5 exd5 9. Nc3 Nbd7 10. Bf4 c5 11. dxc5 Nxc5 12. Rc1 {LiveBook: 53 Games} Re8 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} 13. Nb5 (13. Nd4 a6 14. a3 Bf8 15. b4 Ne6 16. Nxe6 fxe6 17. Na4 Rc8 18. Rxc8 Qxc8 19. Qd4 b5 {0-1 (82) Nakamura,H (2787)-Carlsen,M (2853) chess.com INT 2016}) 13... Rf8 $146 ({Better is} 13... Ne6 $14) ({Predecessor:} 13... Ne6 14. Nc7 Nxc7 15. Rxc7 Bc8 16. Nd4 Bd6 17. Bxd6 Qxd6 18. Qc2 Bd7 19. Rc1 a5 20. e3 {½-½ (35) Boettcher,F (2177)-Vertongen,W (2166) LSS email 2011}) 14. Nfd4 $16 Qd7 {[#]White is better.} 15. b4 $1 Rfc8 16. bxc5 bxc5 17. Nc7 Rxc7 18. Bxc7 Qxc7 19. Qa4 g6 20. Red1 h5 21. e3 a6 22. Nb3 Rc8 23. Qa5 Qd6 24. Nxc5 (24. e4 $16) 24... Rxc5 $11 {The position is equal.} 25. Qxc5 Qxc5 26. Rxc5 Bxc5 27. Rb1 Bc6 {And now ...Bd7 would win.} 28. Rb8+ Be8 $1 29. Bxd5 a5 (29... Kf8 $5 {[%cal Rf6d5]} 30. Bc4 Nd7 $11) 30. Bc6 Kf8 $1 31. Bxe8 Nxe8 32. Rb5 Bb4 $1 33. a3 Bxa3 {Precision: White = 76%, Black = 46%.} 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Cori, Jorge"]
[Black "Cordova, Emilio"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2618"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,92,12,11,14,18,12,20,14,14,8,11,0,20,6,9,0,25,0,30,0,0,0,0,0,0,-3,0,-14,-21,-20,6,0,15,-23,-21,-23,13,27,29,-79,-90,-83,-58,-42,-52,-90,-88,-71,-60,-104,-95,-125,-88,-93,-87,-95,-50,-48,-17,-245,-166,-149,-172,-268,-259,-279,-280,-348,-320,-768,-775,-773,-750,-855,-855,-855,-855,-855,-855]} 1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nbd2 d6 9. Re1 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems} (9. c4 Nbd7 10. Qe2 Re8 11. Rfd1 Qc7 12. Rac1 Bf8 13. e4 e5 14. dxe5 dxe5 15. Nf1 g6 16. Bb1 Bh6 17. Rc3 Rad8 18. Rcd3 Rc8 19. Ng3 Nb8 {0-1 (49) Bartel,M (2629)-Socko,B (2631) Warsaw 2012}) 9... Nbd7 10. a3 Qc7 11. Rc1 {The position is equal.} Rfe8 12. c4 Rac8 13. Qc2 h6 $146 ({Predecessor:} 13... Qb8 14. Qb1 Bf8 15. h3 Qa8 16. Red1 Red8 17. Ng5 h6 18. Bh7+ {1-0 (18) Kovacevic,V (2499)-Kovacevic,B (2452) Sibenik 2008}) 14. Qb1 Qb8 15. b4 Qa8 16. Qa1 Bf8 17. Bf1 a6 18. h3 Red8 19. Bc3 cxd4 20. exd4 Rb8 21. Nh2 b5 22. c5 Nd5 23. Nb3 Nf4 {[%cal Rb7g2]} 24. f3 (24. g3 $5 {[%cal Rg3f4]} Nh5 25. Na5 $11) 24... e5 25. Na5 Ne6 26. Bb2 {[#] c6 is the strong threat.} Rbc8 27. cxd6 (27. c6 $1 $11 {remains equal.} Bxc6 28. Rxc6 Rxc6 29. d5) 27... Rxc1 $17 28. Rxc1 e4 29. Nxb7 Qxb7 30. fxe4 Qxe4 31. Re1 Qd5 32. Ng4 Bxd6 33. Qd1 Bg3 34. Re3 Bf4 $36 {[%mdl 2048] Hoping for ...h5. Black is in control.} 35. Rd3 h5 36. Ne5 Qa2 ({Don't play} 36... Bxe5 $6 37. dxe5 Qa2 38. Bc3 $16 (38. Rxd7 Rxd7 39. Qxd7 Qxb2 $14)) 37. Nxf7 $2 {[#]} (37. d5 $11 {and White has nothing to worry.} Nxe5 38. Bxe5 Bxe5 39. dxe6 Rxd3 40. exf7+ Qxf7 41. Bxd3) 37... Kxf7 ({Stronger than} 37... Qxb2 38. Nxd8 Nxd8 39. Qf3 $18) 38. d5 Nef8 ({Inferior is} 38... Qxb2 39. Qxh5+ Ke7 40. dxe6 $14) 39. Rb3 (39. Qxh5+ $142 Kg8 40. Bd4) 39... Be5 $19 40. d6 Kg8 41. Qd5+ Kh8 42. Bd3 $2 (42. Bxe5 Nxe5 43. Rd3) 42... Nf6 {Black is clearly winning.} 43. Qxe5 Qxb3 44. Qe7 Re8 45. Bxf6 Rxe7 46. dxe7 Qf7 {Precision: White = 36%, Black = 62%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Sevian, Samuel"]
[Black "Delgado Ramirez, Neuris"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2601"]
[BlackElo "2613"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,89,18,29,14,20,35,38,0,0,-36,-26,-31,-25,-40,2,-72,0,0,0,0,18,16,52,50,42,39,47,45,55,54,67,67,50,52,44,35,89,47,58,56,64,78,164,154,222,223,200,210,256,131,135,132,200,198,200,73,454,448,465,298,395,429,450,460,580,521,912,889,855,833,832,791,1136,1068]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Nbd7 9. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} b5 10. g5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} b4 11. Ne2 Ng8 12. h4 {White is slightly better.} h6 13. Qd2 $146 ({Predecessor:} 13. Bg2 hxg5 14. hxg5 Rxh1+ 15. Bxh1 Nb6 16. Qd3 Be7 17. f4 Nc4 {½-½ (104) Zhigalko,S (2639)-Sutovsky,E (2650) Poikovsky 2017}) 13... a5 14. Rg1 hxg5 15. hxg5 Qc7 16. Ng3 (16. a3 $11 {keeps the balance.}) 16... Rb8 (16... a4 $17 17. Nc1 Ne7) 17. f4 $1 $36 {[%mdl 2048] White has the initiative.} a4 18. f5 Bc4 19. Nc5 Nb6 20. Na6 Bxa6 $1 21. Bxa6 Nc4 22. Bxc4 $1 Qxc4 23. b3 Qc3 24. Qxc3 bxc3 25. O-O-O axb3 26. axb3 Rh2 (26... Rh4 $1 $14) 27. Rh1 Rg2 $1 {[%cal Rg2g3]} 28. Rdg1 Rxg1+ $1 29. Bxg1 Be7 (29... Ne7 $16) 30. Be3 $18 Ra8 (30... Bf8 $16 31. Rh7 Ne7) 31. Kb1 Kd7 32. Rh8 Rc8 33. Nh5 (33. Rh7 $18) 33... g6 $16 34. Ng3 gxf5 (34... f6 $16 {was worth a try.}) 35. Nxf5 $18 Rf8 36. Kc1 (36. b4 $18) 36... Ke6 $2 {[%mdl 8192] [#]} (36... Rb8 $16 {is a better chance.} 37. Kd1 Ke6 38. Ng7+ Kd7) 37. Kd1 Rd8 {If only Black now had time for ...d5....} 38. Ng7+ Kd7 39. Ke2 Rc8 {White is clearly winning.} 40. Nf5 Ke6 41. Nh6 Nxh6 42. Rxc8 Ng4 43. Bc1 f5 44. g6 {[#] aiming for g7.} Kf6 45. Re8 {Precision: White = 56%, Black = 35%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Fier, Alexandr"]
[Black "Hungaski, Robert Andrew"]
[Result "1-0"]
[ECO "C72"]
[WhiteElo "2576"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,61,36,39,35,42,52,24,30,19,25,21,49,39,40,42,50,33,48,2,22,11,39,39,94,108,138,148,124,94,120,89,125,81,89,75,96,79,158,156,168,137,144,144,139,116,286,319,29995,29996,29996,29997]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c4 Nge7 {C72: Ruy Lopez: Deferred Steinitz: 5 0-0} (6... g5 7. Bxc6 Bxc6 8. Nc3 Bg7 9. d3 h6 10. Be3 Ne7 11. d4 Ng6 12. dxe5 dxe5 13. Qc2 O-O 14. Rad1 {1-0 (36) Sjugirov,S (2646)-Mamedyarov,S (2748) Doha 2015}) 7. Nc3 {LiveBook: 12 Games} g6 8. d4 {And now Bg5 would win.} Bg7 {[%cal Rc6d4] White is slightly better.} 9. d5 Nd4 10. Nxd4 $146 ({Predecessor:} 10. Bxd7+ Qxd7 11. Be3 Nxf3+ 12. Qxf3 f5 13. exf5 gxf5 14. Qh5+ {0-1 (43) Paravyan,D (2424)-Demchenko,A (2588) St Petersburg 2014}) 10... exd4 11. Ne2 b5 12. cxb5 axb5 13. Bb3 $36 {[%mdl 2048] White is more active.} c5 {aiming for ...c4.} 14. dxc6 $1 Nxc6 15. f4 {[%cal Bf2f4,Bf4f5,Bf5f6][%mdl 32]} O-O 16. f5 $1 Na5 17. Bd5 Bc6 ({Black should play} 17... Rc8 $14) 18. Nf4 $1 $16 (18. Nxd4 $6 Bxd5 19. exd5 Re8 $11) 18... Bxd5 19. Nxd5 {Strongly threatening f6.} Re8 20. f6 Bf8 21. Qd3 (21. Qxd4 Nb3 $17) 21... Nc6 22. Bf4 Qb8 23. a3 Qb7 24. Rae1 b4 ({Better is} 24... h5) 25. Qd2 $1 h5 26. Bh6 {White threatens Bxf8 and mate.} (26. Nxb4 Nxb4 27. Bh6 (27. axb4 Ra4 $15) (27. Qxb4 Qxb4 28. axb4 Re6 $11) 27... Nc2 $1 $11 {[%mdl 512]}) 26... Kh7 27. Bxf8 Rxf8 28. Rf5 $1 {[%cal Rf5h5] Rxh5+! would kill now.} ({Resist} 28. Nxb4 $6 Nxb4 29. axb4 Ra4 $11) (28. axb4 d3 $14) 28... Qd7 $2 {[#]} ({Inferior is} 28... bxa3 {[#]} 29. Rxh5+ $1 {[%mdl 512]} Kg8 30. Qh6 $1 {[%mdl 512]} gxh5 31. Qg7#) ({Not} 28... gxf5 29. Qg5 fxe4 30. Qg7#) (28... Ne5 $16) 29. Qd1 $3 $18 {[%mdl 512] White wants to mate with Rxh5+!} bxa3 $2 {[#]} (29... Kh6 $18 30. Nf4 Ra5) 30. Rxh5+ $1 {[%mdl 512]} Kg8 {[#]} (30... gxh5 31. Qxh5+) 31. Qd2 $1 {[%mdl 512] Precision: White = 82%, Black = 32%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Ortiz Suarez, Isan Reynaldo"]
[Black "Cori Quispe, Kevin Joel"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "2570"]
[BlackElo "2390"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,82,52,57,44,51,43,62,67,73,42,40,36,57,35,28,33,25,25,27,6,7,8,6,8,8,6,6,4,7,22,57,63,75,19,20,23,14,15,242,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. Be2 b6 8. Be3 Bb7 9. f3 Be7 10. O-O d6 11. Qd2 O-O 12. Rfc1 Nbd7 13. a4 {B41: Sicilian: Kan Variation: 5 c4} (13. b4 Rfe8 14. Na4 Bf8 15. Rab1 Rac8 16. Bf1 Qb8 17. Qf2 Ba8 18. Nb3 Rc6 19. Rd1 Rec8 20. Rb2 Ne5 {½-½ (123) Nepomniachtchi,I (2767)-Pantsulaia,L (2607) Doha 2016}) 13... Rab8 14. Nd1 Ne5 $146 ({Predecessor:} 14... Rfc8 15. a5 bxa5 16. Rxa5 Ne5 17. b4 Nc6 18. Nxc6 Qxc6 19. c5 Bd8 20. Ra3 d5 {1-0 (39) Milanovic,D (2496)-Potpara,N (2390) Niksic 2016}) 15. a5 {White is slightly better.} bxa5 16. Qxa5 Qxa5 17. Rxa5 Rfc8 18. Ra2 d5 19. exd5 exd5 20. Nf5 Bc5 21. b4 Bxb4 {[%cal Re5c4]} 22. c5 Rc7 $1 23. Bxa6 Bxa6 24. Rxa6 Nd3 {[#] And now ...d4 would win.} 25. Rb1 $36 {[%mdl 2048] Ra3! is the strong threat. White has good play.} Nxc5 26. Ra2 {Black must now prevent Rxb4!} Ncd7 27. Rab2 $1 {[%cal Rb2b4]} Rc4 28. Bf2 {[#]} (28. Bd4 $16) 28... d4 $1 $11 {[%mdl 512]} 29. Bxd4 Nd5 30. Bf2 Re8 $2 (30... Rc6 $1 $11 {and Black stays safe.}) 31. Nfe3 $2 ({White has to play} 31. Nde3 $18 Rc5 32. Nxd5 (32. Rxb4 Nxb4 33. Rxb4 g6 $16) 32... Rxd5 33. Ne3 (33. Rxb4 Rxf5 34. h3 h6 $14) 33... Rxe3 34. Bxe3) 31... Bc5 {[%cal Rd5e3] The position is equal.} 32. Rb3 Nxe3 33. Nxe3 Ra4 34. Rb7 Bxe3 35. Bxe3 Rxe3 36. Rxd7 {[%mdl 4096] Endgame Intending Rd8+ and mate. KRR-KRR} g6 37. Rb8+ Kg7 {Strongly threatening ...Ra2.} 38. Rbb7 Rf4 39. Kf2 Ra3 40. Kg3 Rf5 41. h4 h5 {Precision: White = 57%, Black = 76%.} 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Flores, Diego"]
[Black "Kovalyov, Anton"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2567"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,53,18,17,31,8,21,10,32,-2,50,68,76,68,107,87,112,96,132,88,164,166,174,178,170,209,173,127,999,1014,904,987,966,944,1110,1068,1065,1060,1713,955,955,952]} 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. O-O O-O 6. b3 c6 7. Bb2 b5 8. Qc2 Bb7 {A14: English Opening: 1...e6 with b3 by White} 9. d3 a5 10. Nc3 $146 ({Predecessor:} 10. Nbd2 Na6 11. a3 b4 12. a4 Rc8 13. e4 Nc5 14. e5 Ne8 15. Rad1 Nd7 16. Rfe1 g6 17. Nf1 Ng7 18. Ne3 Re8 19. Bc1 {1-0 (45) Sorokin,M (2574)-Piankov,E (2374) Linares 2000}) 10... a4 {The position is equal.} 11. cxd5 exd5 (11... a3 $11 12. d6 Qxd6) 12. bxa4 $14 b4 13. Nd1 Qa5 14. Ne3 {[%cal Bd1e3,Be3f5,Bf5h6,Bh6f7,Bf7d6][%mdl 32]} Qxa4 15. Qc1 {And now Nf5 would win.} Bc8 16. Nd4 Bd8 (16... Re8 $16) 17. Nef5 {Black must now prevent Qg5.} Ne8 18. e4 dxe4 19. Bxe4 Bf6 20. Re1 {Strongly threatening Nh6+!} Ra5 $2 {[%mdl 8192] [#]} (20... Bxf5 $16 21. Nxf5 Bxb2 22. Qxb2 Kh8) 21. Nh6+ $1 $18 {[%mdl 512] White is clearly winning.} Kh8 {[#]} (21... gxh6 22. Qxh6) 22. Nxf7+ $1 {[%mdl 512]} Kg8 (22... Rxf7 23. Bxc6) 23. Qc4 {White wants to mate with Nh6+.} Rd5 24. Bxd5 cxd5 25. Qxc8 Nd6 26. Qxf8+ Kxf8 27. Nxd6 {Precision: White = 77%, Black = 21%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Shabalov, Alexander"]
[Black "Ruiz Castillo, Joshua Daniel"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2556"]
[BlackElo "2367"]
[Annotator "TA"]
[PlyCount "189"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,189,-12,-21,14,-9,-11,-14,0,0,17,4,19,16,25,0,0,0,15,12,31,29,31,27,47,21,69,63,58,12,12,0,12,0,14,0,23,26,50,51,254,62,102,0,0,0,0,-12,-27,-66,-33,-77,-66,-68,-68,-66,-49,-49,-49,-49,-27,-49,-35,-66,0,0,0,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-59,-66,-59,-59,-33,-25,-49,-58,-36,-71,-36,-30,0,0,0,-47,-57,-69,-41,-45,0,-89,0,-48,-43,-45,-41,-41,-32,-23,-23,-58,-10,-22,0,-58,-60,-61,-58,-92,-39,-62,-61,-58,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,23,0,0,0,0,0,0,0,0,0,0,0,0,0,183,181,154,62,189,205,229,222,379,385]} 1. e4 c5 2. Nc3 g6 3. h4 (3. d4 cxd4 4. Qxd4 Nf6 5. Nf3 Nc6 6. Qa4 d6 7. e5 dxe5 8. Nxe5 Bd7 9. Nxd7 Qxd7 10. Be3 Bg7 11. Rd1 Qg4 12. Rd4 Qf5 13. Bd3 Qe5 14. Rb4 Qc7 15. Bb5 O-O 16. Rc4 {0-1 (36) Wei,Y (2706)-Bu,X (2681) China 2015}) 3... h5 4. Bc4 Nc6 5. Nf3 Bg7 6. d3 {LiveBook: 4 Games. B23: Closed Sicilian: Lines without g3} Na5 7. Bb3 Nf6 $146 ({Predecessor:} 7... Nxb3 8. axb3 d6 9. Be3 Nf6 10. Qd2 b6 11. Bg5 {1-0 (41) Matinian,N (2291)-Simonov,V (2301) Vladimir 2008}) 8. Bg5 {The position is equal.} Nxb3 9. axb3 d6 10. Qd2 a6 11. O-O Bg4 12. Nh2 $36 {[%mdl 2048] White has good play.} Bd7 13. Rae1 O-O 14. Bh6 b5 15. Bxg7 Kxg7 16. f4 b4 17. Nd1 d5 18. e5 Nh7 19. Ne3 d4 20. Nc4 a5 21. Qf2 Ra6 22. Nf3 Qa8 23. Nfd2 Rc8 24. Ne4 Nf8 $2 {[#]} (24... Bf5 $1 $14) 25. Ng3 $2 ({White must play} 25. e6 $1 $18 {[%cal Re6d7][%mdl 512]} Bxe6 (25... Rxe6 26. f5) 26. Nxc5 $1 {[%mdl 512]}) 25... Bf5 $1 $14 26. e6 (26. Ra1 $16) 26... f6 $1 $11 (26... Bxe6 $2 27. f5 $18) 27. Nxf5+ gxf5 28. Qg3+ Ng6 29. Rf3 Rf8 30. Ra1 Qd5 31. Rxa5 Rxa5 32. Nxa5 Ra8 33. Nc4 Ra6 34. Rf1 Rxe6 35. Qf2 Qa8 36. g3 Kf8 (36... Ra6 $15) 37. Qd2 {Qd1 is the strong threat.} Kg7 {[%cal Bf8g7,Bg7h6,Bh6g6,Bg6f7][%mdl 32]} 38. Kf2 (38. Qf2 $11) 38... Ra6 $15 39. Qd1 Kh6 $1 40. Re1 e6 41. Qf3 {And now Qxa8 would win.} Qa7 42. Ke2 Nh8 43. Kd2 Nf7 44. Qh1 Kg6 45. Rf1 Nd8 (45... Nh6 {with more complications.} 46. Kd1 Qd7 47. Ke2 Qd5 48. Kd2 Kf7) 46. Re1 Qb7 (46... Kh6 {seems wilder.} 47. Rg1 Kg7 48. Rf1 Nf7 49. Qf3 Kh6) 47. Qxb7 Nxb7 {[%mdl 4096] Endgame KRN-KRN} 48. Ke2 Kf7 49. Rc1 Ke7 50. c3 $1 Nd8 51. cxb4 cxb4 52. Kf3 Nc6 53. Re1 Kd7 54. Kf2 Ke7 55. Kf3 Kd7 56. Kf2 Ne7 57. Kf3 Nd5 58. Rc1 Nc7 59. Ke2 Nb5 60. Kd2 Ke7 61. Rc2 Kd7 62. Rc1 Na7 63. Re1 Nc6 64. Rf1 {[#]} Nb8 (64... Na5 $1 $17 65. Nxa5 Rxa5) 65. Re1 Kc7 66. Rc1 Kb7 (66... Nc6 $15) 67. Ke2 $11 Nd7 68. Nd2 Rc6 69. Ra1 Ra6 70. Rc1 Nb8 71. Rc5 Nc6 72. Nc4 Kc7 73. Kd2 Ra1 74. Ke2 Kd7 75. Rb5 Ra7 76. Kd2 Kc7 77. Ke2 Ra8 78. Rc5 Ra6 79. Kd2 Ra1 80. Ke2 Ra8 81. Kf2 Kd7 82. Rb5 Rb8 83. Rc5 $1 Rb7 84. Ke2 (84. g4 $5 {[%cal Rg4f5]}) 84... Ne7 85. Ra5 Nc6 86. Rc5 Rb8 87. Kf2 Ne7 88. Ra5 Nd5 89. Ra6 Nc7 90. Rd6+ Kc8 $2 (90... Ke7 $11 {and Black has nothing to worry.}) 91. Nb6+ $18 ({Resist} 91. Rxd4 $6 Nb5 $16) 91... Kb7 92. Na4 ({Better is} 92. Nd7 $16 Ra8 93. Nc5+ (93. Nxf6 Ra2 $16) 93... Kc8 94. Rxd4 (94. Nxe6 Nxe6 95. Rxe6 Ra2 $16)) 92... Re8 ({Black should play} 92... Nd5 $1 $14) 93. Nc5+ ({But not} 93. Rxd4 Nd5 $16) 93... Kc8 94. Rxd4 Nd5 $2 {[#]} (94... Rd8 {was necessary.} 95. Rxb4 Rd6) 95. Nxe6 $1 {[%mdl 512] Precision: White = 59%, Black = 42%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Erenburg, Sergey"]
[Black "Iturrizaga Bonelli, Eduardo"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2550"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "25"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,25,29,62,-2,-12,-9,-1,-10]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O h6 7. Nbd2 Ne7 {B12: Caro-Kann: Advance Variation} 8. Nb3 g5 (8... Qc7 9. Bd2 g5 10. c4 a5 11. Rc1 dxc4 12. Bxc4 Bg7 13. Re1 O-O 14. h4 g4 {1-0 (39) Vachier Lagrave,M (2804)-Tomashevsky,E (2716) Doha 2016}) 9. a4 Bg7 10. a5 O-O {LiveBook: 5 Games} 11. c4 (11. c3 $14) 11... dxc4 $11 12. Bxc4 Rc8 $146 ({Predecessor:} 12... Nd5 13. Re1 Qe7 14. Bd3 Bxd3 15. Qxd3 {½-½ (41) Burg,T (2507)-Dragun,K (2580) Maastricht 2015}) 13. Be3 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Garcia Pantoja, Roberto"]
[Black "Palencia Morales, Wilson Guillermo"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2500"]
[BlackElo "2343"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,81,39,55,8,8,8,15,7,36,29,39,36,27,32,43,0,89,81,83,66,129,130,177,183,391,264,893,450,436,410,491,482,482,467,510,352,620,613,583,195,187,189,190,118,262,0,142,130,142,146,117,0,1580,1445,29994,29995,29996,29997,29997,29998,29998,29999]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4 Qa5+ 9. c3 cxd4 10. b4 Qc7 11. Nxd4 a6 {LiveBook: 13 Games} 12. Nb3 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} (12. a3 b5 13. Nb2 Nb6 14. Be2 Bd7 15. O-O Be7 16. Qe1 O-O 17. Qf2 Rab8 18. Bd3 f5 19. h3 Nc4 20. Nxc4 dxc4 {0-1 (72) Motylev,A (2653)-Fedoseev,V (2664) Khanty-Mansiysk 2015}) 12... g5 $146 ({Predecessor:} 12... Be7 13. Bd3 g6 14. O-O f6 15. exf6 Nxf6 16. Bb6 Qb8 17. Qe2 e5 18. fxe5 Qxe5 19. Rae1 Qxe2 20. Rxe2 {½-½ (42) Morgunov,A (2307)-Mamyrbay,A (2078) Kazan 2014}) 13. g3 h5 14. h4 {The position is equal.} gxf4 (14... d4 $5 15. Nxd4 b5 $11) 15. gxf4 b6 16. Qd2 Bb7 {...d4! is the strong threat.} 17. Rh3 {[%cal Bh1h3,Bh3g3,Bg3g7][%mdl 32]} Be7 18. Qf2 {[%cal Ra4b6]} Bd8 (18... d4 $1 $11 19. Nxd4 b5) 19. Bd3 Rg8 20. Rg3 Rh8 (20... Rxg3 $14 21. Qxg3 Be7) 21. Rg7 $16 Ne7 22. Nd4 Kf8 $2 (22... Bc8 23. Kd2 b5) 23. Qg3 $18 {Black must now prevent Kd2.} b5 $2 (23... Bc6) 24. Nc5 Nxc5 25. bxc5 Bc8 26. Rh7 Rxh7 27. Bxh7 Qa5 28. Bd2 Qa3 $2 {[#]} (28... Qc7 29. f5 exf5) 29. f5 $1 {[%mdl 512]} exf5 {[#]} 30. c6 $2 (30. e6 $1 {[%mdl 512]} Bxe6 31. Qe5) 30... Bb6 31. Qg5 $36 {[%mdl 2048] White is on the roll.} Bxd4 32. cxd4 {aiming for Qf6.} Qf3 (32... f4 $16) 33. Qh6+ (33. Qf6 $1 $18 {[%cal Rf6h8] White wants to mate with Qh8+.} Qh1+ 34. Ke2 Qg2+ 35. Kd1 (35. Kd3 Qe4+ 36. Kc3 b4+ 37. Kb2 Qxd4+ 38. Kc2 Qc5+ 39. Kb1 Qg1+ 40. Kc2 Qc5+ 41. Kb2 Qd4+ 42. Kc2 Qc4+ 43. Kb2 Nxc6 $11) 35... Qf1+ 36. Kc2 Qc4+ 37. Kd1 Qf1+ 38. Kc2 Qc4+ 39. Kb2 Qxd4+ 40. Bc3 Qf2+ 41. Kb3) 33... Ke8 $16 {Strongly threatening ...Qh1+.} 34. Qf6 $1 {[%cal Rf6h8][%mdl 1024] White has strong compensation.} Qh1+ 35. Ke2 {[%cal Be1e2,Be2d1,Bd1c1][%mdl 32] White threatens Qh8+ and mate.} Qg2+ {[#]} 36. Kd1 $1 {[%cal Rd1c1]} ({Wrong is} 36. Kd3 $2 Qe4+ 37. Kc3 {[#]} b4+ $1 {[%mdl 512]} 38. Kb2 Qxd4+ 39. Kc2 Qc4+ 40. Kb2 Nxc6 $17) 36... Qg4+ $2 {[%mdl 8192]} (36... Qf1+ $11 37. Be1 Qd3+ 38. Bd2 Qf1+ 39. Be1 Qd3+ 40. Bd2 Qf1+) 37. Kc1 $18 Ng6 38. Bxg6 {White mates.} fxg6 39. Qh8+ Kf7 40. Qh7+ Ke8 41. Qg8+ {Precision: White = 62%, Black = 33%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Barrientos, Sergio E"]
[Black "Torres, Juan Camilo"]
[Result "1-0"]
[ECO "C91"]
[WhiteElo "2463"]
[BlackElo "2275"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,113,41,45,20,27,19,18,0,0,0,0,0,0,20,8,0,0,-5,0,0,0,-18,-9,-32,-7,-22,-20,-26,33,27,34,0,0,-87,-75,-143,-125,-198,-194,-190,-114,-333,-335,-280,-169,-152,-93,-68,30,48,43,37,36,36,93,78,80,23,72,22,29,27,47,47,47,53,39,36,61,58,113,60,68,62,189,179,319,323,318,318,292,280,333,323,420,431,416,435,823,395,924,476,2018,664,29948,12836]} 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. d4 Nd7 10. a4 Bb7 11. d5 {C90: Closed Ruy Lopez with 7...d6: Early deviations} Na5 12. Ba2 c6 (12... c5 13. dxc6 Bxc6 14. axb5 axb5 15. Bd5 Nc4 16. Na3 Bxd5 17. Qxd5 Nxa3 18. Rxa3 Rxa3 19. bxa3 {½-½ (60) Ragger,M (2703)-Costachi,M (2430) Graz 2017}) 13. b4 {The position is equal.} cxd5 $146 ({Predecessor:} 13... Nc4 14. Bxc4 bxc4 15. dxc6 Bxc6 16. Na3 f5 17. exf5 Nb6 18. a5 Nd5 19. Nxc4 Nxc3 {½-½ (73) Fernandez Aguado,J (2470)-Garcia Callejo,J (2350) Lleida 1991}) 14. bxa5 dxe4 15. Nfd2 Nc5 16. Ba3 d5 17. Bxc5 Bxc5 18. Nb3 Be7 19. axb5 axb5 20. N1d2 Kh8 21. Qe2 Qd7 22. Red1 {Hoping for Nxe4!} f5 23. Nf1 b4 (23... Rfc8 $11) 24. cxb4 $14 Bxb4 25. Qb2 Qe7 26. Rab1 {[#]} (26. Nc1 $11 {keeps the balance.} Ba3 27. Qb5) 26... Ba3 $1 $17 {[%cal Ra3b2][%mdl 1024] Black has strong compensation.} 27. Qd2 (27. Qc2 $142) 27... d4 28. Nc1 (28. Nxd4 $17 exd4 29. Qxd4) 28... f4 $19 29. Qe1 f3 (29... Ra6 $19 30. Bc4 Rg6) 30. g3 $2 (30. gxf3 $17 Rxf3 31. Ng3) 30... Qd7 31. Ne3 Ba6 {And now ...Qh3 would win.} 32. Bc4 Qc7 (32... Qa4 $142 33. Bb3 Qd7) 33. Bxa6 $17 dxe3 (33... Rxa6 $15 34. Nd5 Qd7) 34. Qxe3 $11 Bc5 35. Qxe4 {Strongly threatening Bd3.} Rxa6 36. Nb3 {Threatens to win with Rbc1.} Bd4 (36... h6 $14) 37. Rbc1 Qa7 38. Rc2 (38. Nxd4 $16 exd4 39. Rxd4) 38... Qa8 39. Qe1 h6 40. h3 Qd5 41. Qb4 $36 {[%mdl 2048] White has good play.} Raa8 42. Nxd4 exd4 43. Rc5 Qe6 44. g4 d3 ({Black should try} 44... Qa2 $14) 45. Rxd3 ({Better is} 45. Qc3 $16) 45... Rab8 $14 46. Qd2 Qe7 (46... Qe2 $1 $14 47. Rc1 Rb2) 47. Rd6 Rf6 (47... Kg8 {might work better.}) 48. Rxf6 $18 Qxf6 {[%mdl 4096] Endgame KQR-KQR} 49. Rf5 Qc6 50. Qf4 Ra8 51. Kh2 ({Weaker is} 51. Qxf3 Qxf3 52. Rxf3 Rxa5 $16) 51... Qc8 52. Qxf3 Qc7+ 53. Kg2 Qd8 {[#]} (53... Ra6 $142 54. Rf8+ Kh7 55. Qe4+ g6) 54. h4 (54. a6 $142 $1 Kg8 (54... Rxa6 55. Rf8+) 55. Qb7) 54... Kh7 $2 (54... Kg8 55. Qd5+ Qxd5+ 56. Rxd5 Kf7) 55. g5 Ra6 (55... Qe8 $142 56. Rc5 Ra7 57. gxh6 Rf7 58. Qd3+ Kxh6 59. Qd2+ Kh7 60. Qc2+ g6) 56. Rd5 (56. Rf8 $142 Qxf8 57. Qxf8 Rxa5 58. Qb4 Rxg5+ 59. hxg5) 56... Qa8 57. Qd3+ {Precision: White = 43%, Black = 38%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Terry, Renato"]
[Black "Valdes Romero, Leonardo"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2454"]
[BlackElo "2407"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,135,57,53,50,50,43,44,39,40,35,44,53,81,55,59,57,77,38,63,5,54,43,52,46,63,56,56,51,48,42,154,159,158,152,129,94,153,159,193,193,185,164,166,105,101,106,109,102,130,95,109,58,111,44,132,73,154,145,145,148,146,122,159,125,135,78,113,58,191,0,125,0,186,180,275,265,604,585,1208,1130,1145,1016,987,975,1082,1083,1062,1034,1483,1473,1367,1331,29969,8520,29981,29982,29982,29983,29983,29984,29980,29971,29982,29983,29989,29990,29990,29991,29990,29986,29990,29991,29992,29991,29990,29990,29996,29997]} 1. d4 d6 2. c4 Nf6 3. Nc3 Nbd7 4. g3 e5 5. e3 Be7 6. Bg2 O-O 7. Nge2 c6 8. O-O Re8 9. b3 Bf8 10. Qc2 {A53: Old Indian Defence without Nf3} Qc7 {LiveBook: 4 Games} 11. Bb2 a6 12. Rac1 {White is slightly better.} Rb8 13. Rfd1 g6 {[#]} 14. h3 $146 h5 15. Rd2 Be7 16. Rf1 Bf8 17. Rfd1 Ra8 18. d5 c5 19. e4 (19. Ra1 $14) 19... Qd8 20. a4 Bh6 21. Rd3 $1 h4 22. Rf1 Nh5 23. Bc1 Bxc1 24. Qxc1 Ndf6 (24... Kg7 $1 $14) 25. g4 $16 ({Don't do} 25. gxh4 Nh7 $14) 25... Ng7 26. f4 Nh7 27. f5 g5 {[#]} (27... Rf8 $142) 28. f6 $1 {[%mdl 512]} Nxf6 29. Qxg5 Nh7 30. Qh6 Rf8 31. Rdf3 (31. g5 $18) 31... Ne8 32. Qc1 Qg5 33. Qe1 Qh6 34. a5 Ng5 35. Rd3 (35. R3f2 $16) 35... Bd7 ({Black should try} 35... Rb8 $14) 36. Nd1 (36. Na4 $16) 36... Ng7 (36... Rb8 $1 $14) 37. Ne3 (37. b4 $142) 37... Rab8 (37... Qh7 $142) 38. b4 $1 Rfc8 39. bxc5 Rxc5 40. Qb4 Nh7 41. Qb6 Nf8 42. Nc3 ({Better is} 42. Rb3) 42... Ne8 43. Qb4 Ng7 {[#]} (43... Ng6 $14) 44. Ne2 $2 (44. Nf5 $1 $18 {[%cal Rf5h6]} Bxf5 45. exf5) 44... Ne8 (44... Nh7 $1 $11) 45. Nc3 (45. Kh1 $16) 45... Ng7 $1 $18 {[#]} 46. Nf5 $1 $36 {[%cal Rf5h6,Be3f5,Bf5d6,Bd6f7][%mdl 2080] White is really pushing.} Qf6 {[#]} (46... Nxf5 {is a better defense.} 47. exf5 Rbc8) 47. g5 $1 {[%mdl 512]} Qxg5 $2 (47... Qd8) 48. Nxd6 Rc7 49. Nxf7 Qg6 50. Nxe5 Qh5 51. Qd6 Re8 {[#]} 52. Rxf8+ $1 Rxf8 53. Qxc7 Bxh3 54. Rxh3 Qg5 55. Ne2 Qd2 56. Rf3 Qe1+ 57. Rf1 {White mates.} Rxf1+ 58. Bxf1 Qd2 59. Qd8+ Kh7 60. Qxh4+ Kg8 61. Qf4 Qxa5 62. Qf7+ Kh7 63. Nd7 Qd2 64. Qf4 Qb2 65. e5 a5 66. Nf6+ Kg6 67. Ne4 a4 68. Qf6+ {Precision: White = 46%, Black = 41%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Zapata, Alonso"]
[Black "Bruzon Batista, Lazaro"]
[Result "0-1"]
[ECO "C60"]
[WhiteElo "2420"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,31,30,23,19,16,33,-29,-28,-38,-35,-65,-65,-60,-68,-58,-64,-61,-62,-85,-68,-87,-74,-108,-64,-90,-75,-70,-61,-67,-59,-62,-59,-77,-63,-59,-61,-82,-81,-122,-129,-121,-110,-112,-118,-129,-129,-125,-120,-124,-109,-110,-109,-139,-100,-258,-255,-554,-548,-543,-540,-34,-497,-684,-675,-6019,-1964,-29966,-29969]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 a6 5. Bxc6 (5. Ba4 d6 6. d4 Bd7 7. dxe5 Nxe5 8. Nxe5 dxe5 9. Be3 Nf6 10. Nd2 b5 11. Bb3 Bd6 12. Qf3 h6 13. a4 Rb8 14. axb5 axb5 15. O-O {1-0 (36) Sutovsky,E (2650)-Rodshtein,M (2701) Poikovsky 2017}) 5... dxc6 {[%cal Bd7c6,Bc6c5][%mdl 32]} 6. O-O {C60: Ruy Lopez: Unusual Black 3rd moves and 3...g6} Bg7 7. d4 exd4 8. Nxd4 (8. cxd4 $14 Ne7 9. Nc3) 8... c5 $11 9. Nb3 {Strongly threatening Qxd8+.} b6 10. Qxd8+ $146 ({Predecessor:} 10. Bf4 Bb7 11. Qxd8+ Kxd8 12. Rd1+ {½-½ (23) Bakre,T (2459)-Priyadharshan,K (2298) New Delhi 2007}) 10... Kxd8 11. Bg5+ f6 12. Rd1+ Bd7 $1 13. Bf4 Kc8 14. Na3 Be6 15. Nc2 Ne7 16. Rd2 Nc6 17. Rad1 Rf8 18. Ne3 Rf7 19. f3 Kb7 20. Kf2 a5 {[%cal Ba6a5,Ba5a4,Ba4a3][%mdl 32]} 21. Nc1 a4 22. h4 Re8 23. h5 a3 24. hxg6 hxg6 25. b3 f5 26. exf5 Bxc3 27. fxe6 Rxf4 28. Rd7 Bd4 29. Ne2 Bxe3+ 30. Kxe3 Rf6 31. Nf4 Nb4 {[#] Hoping for ...g5.} 32. Rg7 $2 (32. Rd8 $17 {is a better defense.} Rff8 33. Kf2) 32... Nxa2 $19 {Threatens to win with ...Nb4.} 33. Rdd7 $2 (33. Rxc7+ {was necessary.} Kxc7 34. Nd5+ Kc6 35. Nxf6 Rxe6+ 36. Ne4) 33... Nb4 34. Rxc7+ Ka6 35. Ra7+ Kb5 36. g4 a2 {[#] aiming for ...Na6.} 37. g5 Rexe6+ (37... Rfxe6+ $142 38. Nxe6 Rxe6+ 39. Kf4 Na6) 38. Nxe6 Rxe6+ {Precision: White = 33%, Black = 81%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Fernandez, Fernando"]
[Black "Ramirez, Alejandro"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2416"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,135,11,5,9,16,6,38,0,3,22,31,10,23,9,20,0,-4,-40,10,-55,12,-2,0,-62,-44,-31,-35,-102,-95,-278,-286,-287,-288,-277,-241,-257,-160,-197,-42,-131,-131,-142,-115,-139,-138,-123,-121,-142,-137,-188,-185,-137,-54,-55,-68,-68,-63,-65,0,0,25,0,0,0,0,0,0,0,48,48,48,48,48,48,61,48,48,48,48,52,52,46,51,45,55,55,56,47,44,21,81,81,144,104,214,141,124,119,237,96,151,0,13,0,0,0,8,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. O-O-O Bb4 9. f3 Ne5 10. Nb3 b5 11. Kb1 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2} Be7 12. Qf2 Bb7 {LiveBook: 4 Games} 13. Na5 $146 ({Predecessor:} 13. Bb6 Qb8 14. Bd4 d6 15. g4 b4 16. Na4 Nxf3 17. Qxf3 Bxe4 18. Qh3 Bxh1 {0-1 (53) Akopian,V (2657)-Giri,A (2776) Doha 2014}) 13... O-O (13... Qxa5 $2 14. Bb6 $18) 14. Bb6 Qc8 15. Rg1 d6 16. g4 Nfd7 17. Bd4 (17. f4 $5 {[%cal Rf4e5]} Ng6 18. Nxb7 Qxb7 19. Bd4 $15) 17... Nc6 (17... Bd8 $5 {[%cal Rd8a5]} 18. Nxb7 Qxb7 $11) 18. Nxc6 Qxc6 19. g5 b4 20. Ne2 $1 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 21. Nf4 (21. h4 $1 $11) 21... Rfe8 (21... a4 $15) 22. Bh3 Bf8 $36 {[%mdl 2048] Black is more active.} 23. Nh5 (23. g6 $11 hxg6 24. Bxe6 fxe6 25. Nxg6) 23... g6 24. Nf6+ Nxf6 25. gxf6 (25. Bxf6 $15 Rec8 26. Rd2) 25... a4 26. Qh4 $2 {[#]} (26. Bf1 $17) 26... b3 $1 $19 {[%mdl 512]} 27. Rg2 (27. axb3 axb3) 27... bxa2+ 28. Ka1 e5 29. Bc3 Bc8 30. Bxc8 Rexc8 $2 (30... a3 $1 $19 31. Be6 Rxe6) 31. Rd3 (31. Bb4 $1 $15) 31... Rab8 $17 32. Qe1 Qc4 33. Qd2 Rb6 34. Rg3 Rcb8 35. Rg1 h5 36. Rd5 (36. Rd1 $17) 36... Kh7 $19 37. Rd1 Bh6 ({Black should try} 37... Qc8 $17 38. Kxa2 a3 $1 {[%mdl 512]}) 38. Qd3 $15 Qxd3 39. R5xd3 Bf4 40. h3 g5 (40... Kh6 $1 $15) 41. Rxd6 Kg6 42. Kxa2 (42. R6d3 {feels hotter.} Rc8 43. Kxa2 Rbc6 44. Ka3 Rc4 45. Rd5) 42... Rxd6 43. Rxd6 $11 {[%mdl 4096] Endgame KRB-KRB} Rc8 44. Ka3 Rc4 45. Ra6 g4 (45... Bc1 $5 {[%cal Rc4c3]} 46. Ka2 (46. Bxe5 Rc5 $11) 46... Bf4 $11) 46. fxg4 hxg4 47. hxg4 Rxe4 48. Rxa4 Re2 $1 49. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Rxc2 50. Kb3 Rh2 $1 51. b5 {b6 is the strong threat.} Rh8 $1 52. Re4 Re8 53. Ba5 {And now Bc7 would win.} Rc8 54. Rc4 Rb8 55. Rc5 e4 56. Kc4 {aiming for Rf5.} (56. Rf5 $5 {[%cal Rf5f4]} Bg3 57. Kc2 $16) 56... e3 (56... Re8 $1 $11 {remains equal.}) 57. Kd3 $16 Re8 (57... Kxf6 $142 58. Rf5+ Kg6) 58. Ke2 $1 Rh8 (58... Bb8 $16 {was worth a try.} 59. Bc3 Ba7) 59. Rf5 Rh2+ 60. Kd3 Bg5 {[#]} (60... Bb8 $16 61. b6 (61. Kxe3 Rg2 $16) 61... e2) 61. Bc3 (61. b6 $1 $18) 61... Rh1 {[#]} (61... Rh3 $142) 62. Ke2 $2 ({White should play} 62. Re5 $1 $16) 62... Rc1 {The position is equal.} 63. Be1 Bxf6 64. Rd5 Bg5 65. Rd4 {Hoping for b6.} Rc2+ 66. Kf3 {Threatens to win with b6.} Rc1 67. Ke2 {Black must now prevent b6.} Rc2+ 68. Kf3 {Precision: White = 38%, Black = 55%.} 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Fernandez Reyes, Lisandro"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2402"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,78,40,10,18,8,22,9,27,0,10,0,3,0,12,-16,0,-1,46,46,45,62,72,73,85,84,66,65,130,59,85,44,50,58,42,-82,-38,-48,-33,-161,-138,-141,0,0,0,0,52,45,8,-22,-37,-30,-29,-32,-32,-35,-43,-604,-595,-595,-589,-571,-587,-732,-732,-702,-717,-507,-712,-12840,-12840]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Nb3 Nf6 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} 7. Bd3 a6 8. f4 d6 {The position is equal.} 9. Qe2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 10. a4 b4 11. Nd1 Be7 12. Be3 $146 ({Predecessor:} 12. O-O Bb7 13. Nf2 e5 14. Ng4 O-O 15. Be3 Nxg4 16. Qxg4 exf4 17. Rxf4 {½-½ (43) Sokolov,A (2584)-Pelletier,Y (2589) France 2007}) 12... e5 13. f5 g6 {Threatening ...gxf5.} 14. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} d5 15. Nf2 d4 16. Bd2 h5 17. g5 Nd7 {[%cal Bf6d7,Bd7c5,Bc5d3][%mdl 32]} 18. h4 Na5 (18... Bb7 $14) 19. O-O (19. Nxa5 $16 {Threatens to win with Nb3.} Qxa5 20. Bc4) 19... Bb7 $14 20. Nh1 Nxb3 21. cxb3 Nc5 22. Rac1 (22. Bxb4 $14 Nxd3 23. Bxe7) 22... Qb6 23. a5 Qxa5 24. Ng3 ({White should try} 24. Bc4 $15) 24... Nxd3 25. Qxd3 {With the idea fxg6.} Qb5 (25... Qb6 $17 26. Kg2 a5) 26. Qxb5+ $1 $11 axb5 27. Rc7 $36 {[%mdl 2048] White has the initiative.} Rb8 (27... Bc8 $11) 28. fxg6 $14 fxg6 29. Rf6 Bxf6 30. gxf6 O-O 31. Rg7+ Kh8 32. Rxg6 Rf7 33. Bh6 $2 {[%mdl 8192] [#]} (33. Rg5 $15) 33... Kh7 $19 {Black is clearly winning.} 34. Rg5 {intending Bg7.} Rxf6 {White must now prevent ...d3.} 35. Bg7 Rg6 36. Rxg6 Kxg6 37. Bxe5 d3 {[#] Hoping for ...d2!} 38. Bf4 Rc8 39. Kf2 Rf8 {Precision: White = 33%, Black = 59%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Ynojosa Aponte, Felix Jose"]
[Black "Peralta, Fernando"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2395"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,87,35,30,38,-8,12,-35,-42,-33,-43,-34,-32,-44,-39,-42,-44,-56,10,11,15,14,14,-5,-14,-78,-77,-87,-87,-87,-87,-87,-87,-87,-87,-87,-87,-81,-82,-83,-70,-84,-51,-59,-52,-54,0,-10,-6,-13,0,-8,0,-59,-53,-47,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12842]} 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} e5 8. Nf3 Nc6 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} 9. d5 {[#] Hoping for Bg5.} (9. dxe5 {is more complex.} Qg6 10. Be2 Bg4 11. O-O Rd8 12. Nd4) 9... e4 $146 ({Predecessor:} 9... Nb8 10. Bg5 Qd6 11. Bd3 Nd7 12. O-O f6 13. Be3 Nc5 14. Bxc5 Qxc5 15. Nd2 Qe7 16. Re1 {½-½ (68) Potkin,V (2621)-Karjakin,S (2771) Dubai 2014}) 10. dxc6 (10. Ng5 {with more complications.} Qxc3+ 11. Bd2 Qd4 12. Be2 h6 13. Nxf7 Kxf7 14. dxc6 bxc6 15. O-O) 10... exf3 {Black is slightly better.} 11. Qxf3 Qxf3 12. gxf3 bxc6 13. Be3 c5 14. Bd3 f5 15. Rb1 a6 (15... Bd7 $15) 16. Bf4 $11 Bd6 17. Bxd6 cxd6 18. Rb6 Kd7 19. Bxf5+ (19. Kd2 $11 {remains equal.}) 19... Kc7 $17 20. Be4 Kxb6 21. Bxa8 {[%mdl 4096] Endgame KRB-KRB} Be6 22. Bd5 Bxd5 23. cxd5 {[#] KR-KR} Kb5 $1 24. Rg1 Kc4 25. Kd2 g6 26. Rg4+ Kxd5 27. c4+ Ke6 28. Re4+ Kd7 29. Rf4 Ke6 30. Re4+ Kf6 31. Rf4+ $1 Ke7 32. Re4+ Kd7 (32... Kf7 $11) 33. Rf4 $1 $15 Rb8 34. Rf7+ Ke6 35. Rxh7 {The position is equal.} Rb2+ 36. Ke3 Rxa2 37. Rg7 Kf6 38. Rd7 $1 Ke6 39. Rg7 Kf6 40. Rd7 $1 Ke5 41. f4+ Ke6 42. Rg7 Kf6 43. Rd7 Ke6 44. Ke4 $2 {[%mdl 40960] Precision: White = 60%, Black = 70%. . An unexpected result.} (44. Rg7 $11) 1/2-1/2

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Sanchez, Sebastian Felipe"]
[Black "Kaidanov, Gregory S"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2388"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,132,-11,0,0,0,0,0,0,2,0,0,0,0,0,-7,-13,0,0,0,0,19,6,6,2,21,0,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-10,-8,0,0,0,-41,0,0,0,0,0,0,0,0,0,0,0,-34,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12829,-8823,-12845,-12843,-12845,-12842,-12842,-12843,-12843,-12843,-12844,-12843,-12844,-12844,-12845,-12845,-12846,-12846,-12846,-12847,-12847,-12847,-12848,-12848,-12849,-12848]} 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. O-O b6 9. b3 {A13: English Opening: 1...e6} Bb7 10. Bb2 Be7 11. d3 {The position is equal.} O-O 12. Nbd2 Rc8 13. Rac1 b5 14. Qb1 Qb6 15. Qa1 Rfd8 {[#]} 16. a3 $146 Ne8 17. Rc2 Nf8 18. Rfc1 f6 19. d4 Rc7 20. e3 Rdc8 21. dxc5 Bxc5 22. Bd4 Nd7 {[%cal Bf8d7,Bd7c5,Bc5e4][%mdl 32]} 23. Bxc5 Nxc5 24. b4 Ne4 25. Qd4 Qxd4 26. Nxd4 Rxc2 27. Rxc2 Rxc2 28. Nxc2 N8d6 29. Nxe4 Bxe4 30. Bxe4 Nxe4 $11 {[%mdl 4096] Endgame KN-KN} 31. Nd4 Kf7 32. Nc6 Nd2 33. Nb8 Nc4 34. Nxa6 Nxa3 35. Kf1 Ke7 36. Ke2 Kd6 37. Kd3 Nc4 38. f4 f5 39. Nc5 Kd5 40. h3 e5 41. e4+ fxe4+ 42. Nxe4 Nb2+ 43. Ke3 exf4+ 44. gxf4 Kc4 45. f5 Kxb4 {aiming for ...Kb3.} 46. h4 Ka3 47. Kd4 b4 {Strongly threatening ...Kb3.} 48. h5 h6 49. f6 gxf6 50. Nxf6 Na4 (50... b3 $5 51. Ne4 $8 Nd1 $11) 51. Ne4 Nb6 {Hoping for ...b3.} (51... b3 $5 52. Nd2 $8 b2 53. Nc4+ Kb3 $11) 52. Kc5 Nc8 {...Ne7 is the strong threat.} 53. Kd5 Kb3 {And now ...Nb6+ would win.} 54. Kc5 $2 {[%mdl 8192] [#]} (54. Ke6 $11) 54... Ne7 $1 $19 {[%cal Re7f5] Black is clearly winning.} 55. Kb5 Ka3 56. Kc4 b3 {[%cal Bb4b3,Bb3b2][%mdl 32]} 57. Nd2 b2 58. Kd4 Ka2 59. Ke5 Nc6+ 60. Kd5 Na5 61. Ne4 Kb3 62. Kd4 Kc2 63. Nc3 Nb3+ 64. Kc4 Nd2+ 65. Kd4 {[#]} Ne4 $1 {[%mdl 512]} 66. Nb5 (66. Nxe4 b1=Q) 66... Kb3 {Precision: White = 76%, Black = 72%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Umetsubo, Cesar Hidemitsu"]
[Black "Cruz, Cristhian"]
[Result "1-0"]
[ECO "E24"]
[WhiteElo "2381"]
[BlackElo "2558"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,119,0,0,0,0,0,-17,-22,-15,-4,-4,-7,0,0,0,0,-10,0,-9,0,0,12,0,0,0,0,9,24,12,26,26,27,23,39,38,80,80,80,75,76,87,73,41,69,47,85,65,78,72,93,86,114,28,44,18,16,20,18,18,93,96,54,81,159,127,168,158,139,0,23,0,0,0,0,0,0,0,336,416,415,392,366,391,370,368,306,250,518,431,758,758,12841,12842,12845,12845,12847,12847,12847,12847,12848,12847,12847,12847,12848,12848,12850,12850]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 b6 6. f3 Ba6 7. e4 Nc6 8. Bg5 h6 {E24: Nimzo-Indian: Sämisch: Unusual Black 5th moves and 5...c5 sidelines} 9. Bh4 $1 Na5 (9... g5 10. Bf2 Qe7 11. h4 O-O-O 12. d5 Na5 13. c5 Bxf1 14. d6 cxd6 15. cxd6 Qf8 16. Kxf1 {½-½ (37) Carlsen,M (2690)-Leko,P (2749) Monte Carlo 2007}) 10. Qa4 (10. e5 $5 {[%cal Re5f6]} g5 11. Bf2 $14) 10... Qc8 {The position is equal.} 11. Nh3 {[%cal Bg1h3,Bh3f2,Bf2g4][%mdl 32]} Qb7 {With the idea ...Nxe4!} 12. Nf2 Qc6 13. Qxc6 dxc6 14. Bxf6 gxf6 15. Ng4 $1 {[#]} Bxc4 $146 ({Predecessor:} 15... Ke7 16. Ne3 {1-0 (79) Volkov,S (2628)-Ovetchkin,R (2543) playchess.com INT 2006}) 16. Nxf6+ Ke7 17. Ng4 Rad8 18. Ne3 Bb3 19. g4 Rd6 20. h4 Rhd8 (20... c5 $5 {[%cal Rc5d4]}) 21. g5 c5 22. d5 Rh8 23. f4 hxg5 24. fxg5 c6 {[%cal Rc6d5]} 25. e5 Rxd5 26. Nxd5+ cxd5 27. Kf2 Bc2 28. Kg3 Nb3 29. Ra2 Bg6 30. Be2 c4 31. h5 Be4 32. Bf3 Nc5 33. Re2 (33. Bxe4 $1 $16 Nxe4+ 34. Kf4) 33... Bf5 $11 34. Re3 Rg8 35. Kh4 $1 Rd8 36. h6 d4 (36... b5 $11 {remains equal.}) 37. cxd4 $16 Rxd4+ 38. Kg3 Bh7 ({Black should play} 38... Rd8) 39. Rh4 Rxh4 40. Kxh4 {[%mdl 4096] Endgame KRB-KBN} b5 41. Bc6 (41. Be2 $16) 41... a6 $11 42. Kg3 Kf8 $1 43. Kf2 Bd3 $1 44. Rh3 {h7 is the strong threat.} Kg8 {White must now prevent ...c3.} 45. Be8 $1 Kh7 $2 {[%mdl 8192]} (45... c3 $11 46. Bxf7+ Kxf7) 46. Bxf7 $18 {aiming for g6+!} Ne4+ {[#]} 47. Ke3 $1 {White wants to mate with g6+.} Nxg5 {[#]} 48. Bg8+ $1 {[%mdl 512]} Kxg8 49. Rg3 Kh7 50. Rxg5 Kxh6 $2 {KR-KB} (50... Bg6 51. Rg3 c3) 51. Rg8 {White is clearly winning.} a5 (51... Bg6 $142 52. Ra8 Kg5 53. Rxa6 Kf5) 52. Rb8 b4 53. axb4 axb4 54. Rxb4 Kg5 55. Rb8 Kf5 56. Kd4 Kf4 57. Rf8+ Bf5 58. Rc8 Bd3 59. Rc7 Kf3 60. Rc6 {Precision: White = 69%, Black = 50%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Valenzuela Gomez, Fernando"]
[Black "Cuartas, Jaime Alexander"]
[Result "0-1"]
[ECO "D08"]
[WhiteElo "2377"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,81,79,72,72,63,60,63,60,45,43,39,62,90,56,86,115,96,0,43,27,23,0,0,-33,-31,-33,-16,-71,-48,-59,-73,-62,-56,-78,-50,-74,-77,-81,-67,-88,-93,-82,-89,-124,-126,-131,-138,-180,-170,-180,-152,-228,-198,-213,-199,-814,-854,-1721,-1718,-29985,-29986,-29992,-29993,-29999]} 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] D08: Albin Counter Gambit} Ng6 7. Bb2 a5 8. b5 Ncxe5 9. Nxe5 Nxe5 10. e3 (10. Qxd4 Qxd4 11. Bxd4 Nxc4 12. e3 Be6 13. Be2 {0-1 (30) Wojtaszek,R (2749)-Morozevich,A (2676) Doha 2016}) 10... Be6 {LiveBook: 25 Games} 11. Bxd4 Nxc4 12. Qc2 Nd6 13. Bd3 {[#]} Qg5 $146 14. f4 Qh4+ 15. g3 Qh5 16. Nc3 Rd8 17. O-O {[#] And now f5 would win.} Nf5 18. Ne2 (18. Bxf5 $16 Qxf5 19. e4) 18... Nxd4 19. Nxd4 Qc5 20. Qb2 (20. Rfc1 $5 {[%cal Rc2c5]} Qxc2 21. Rxc2 $14) 20... Qb6 21. Be4 Bc5 {[%cal Rd8d4] [#] Threatens to win with ...Rxd4.} 22. Rad1 O-O (22... Bg4 $5 {[%cal Rg4d1]} 23. Rd2 O-O $15) 23. a4 (23. Nxe6 $11 Qxe6 24. Qc2) 23... Bc8 24. Nf5 Bxf5 25. Bxf5 Bxe3+ 26. Kh1 c5 27. Qc2 g6 28. Be4 Qc7 29. f5 {[%cal Rf5g6]} Bd4 30. fxg6 hxg6 {[%cal Bh7g6,Bg6g5][%mdl 32]} 31. Qc4 Kg7 32. Bd5 Qd7 33. Bg2 Rh8 {( -> ...Rxh2+!)} 34. h4 g5 35. Rd3 (35. Qc2 $17) 35... f6 36. Qc1 {If White can now play Rxf6! this consolidates a bit.} Qg4 $40 {[%mdl 128] Black wants a kill.} 37. Rff3 $2 (37. Qd1 Qxd1 38. Rfxd1) 37... gxh4 $19 38. gxh4 Rxh4+ 39. Rh3 Rdh8 {Black mates.} 40. Qa3 Rxh3+ 41. Bxh3 Qg1# {Precision: White = 30%, Black = 82%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Lopez Gonzalez, Abel Fabian"]
[Black "Vera Siguenas, Deivy"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2351"]
[BlackElo "2526"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,68,62,66,-1,37,37,50,2,0,2,3,0,0,-69,-71,-70,0,0,0,0,0,0,0,-87,-8,-32,-6,-11,-13,-22,42,-46,-47,-46,-45,-310,-302,-302,-296,-695,-695,-679,-683,-676,-657,-627,-492,-981,-963,-6539,-6459,-5594,-5562,-29995,-29996]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 Be6 7. a3 h6 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} (7... Qd7 8. Be2 Rd8 9. Bxf6 exf6 10. c5 g6 11. b4 a6 12. b5 axb5 13. Nxb5 Be7 14. Nf3 O-O 15. O-O Ra8 16. Rb1 Rfe8 17. Qd2 {½-½ (17) Amin,B (2654)-Dreev,A (2664) Helsingor 2016}) 8. Bxf6 exf6 {LiveBook: 4 Games} 9. c5 (9. cxd5 $14 Bxd5 10. Qe2+ Ne7 11. Nf3) 9... f5 $146 {The position is equal.} ({Predecessor:} 9... Be7 10. Bb5 O-O 11. Nge2 Qc7 12. O-O f5 13. f4 Rad8 14. b4 Nb8 15. Qd2 {1-0 (82) Kosten,A (2497)-Franca,R (2304) France 2009}) 10. Bb5 g5 11. Nge2 (11. f4 $5) 11... f4 12. Qd3 Bg7 13. Ba4 (13. h4 $5) 13... Qf6 14. Nb5 (14. Rd1 $11) 14... O-O $1 $15 15. Bc2 {[%csl Gc2][%cal Rd3h7]} Rfd8 ({Of course not} 15... Qg6 $6 16. Qxg6 fxg6 17. Nc7 $11) (15... Rfe8 $1 $15 16. O-O-O Bf5 17. Qxf5 Qxf5 18. Bxf5 Rxe2) 16. Rd1 $11 Ne7 17. Nd6 $36 {[%mdl 2048] Black is under pressure.} Rxd6 18. cxd6 Nf5 19. h4 (19. O-O $11) 19... Nxd6 ({Black should play} 19... Nxh4 $17 {Strongly threatening ...Bf5.} 20. Kf1 Bg4) 20. hxg5 hxg5 21. Qf3 Re8 22. Kf1 Bd7 (22... Nc4 $11) 23. a4 ({Don't go for} 23. Qxd5 $2 Bc6 $19) ({Better is} 23. Nc3 $14) 23... Ne4 $15 24. g3 {[%cal Rg3f4]} Qc6 25. Bb3 $2 {[%mdl 8192] [#]} (25. Nc3 $1 $15) 25... Qc8 $1 $19 {And now ...Bg4 would win.} 26. Bxd5 Bg4 27. Qd3 $2 (27. Qxe4 Rxe4 28. Bxe4) 27... Bxe2+ 28. Qxe2 {[#]} Nxg3+ $1 {[%mdl 512]} 29. fxg3 Rxe2 30. Kxe2 Qg4+ 31. Bf3 (31. Kd3 $142 Qd7 32. Kc4) 31... Qe6+ 32. Kf2 Qe3+ 33. Kg2 g4 34. Bxb7 f3+ {Precision: White = 34%, Black = 63%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.17"]
[Round "10"]
[White "Rios Parra, Alejandro"]
[Black "Tang, Andrew"]
[Result "1/2-1/2"]
[ECO "C75"]
[WhiteElo "2345"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "162"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,162,47,36,41,37,56,34,30,-17,23,25,15,22,21,12,37,0,0,0,0,0,18,2,14,-1,0,-3,31,12,22,20,30,39,40,31,31,24,42,0,10,0,8,0,15,-8,0,-18,-13,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-9,-9,-9,-9,-9,-9,-19,-19,-19,-9,-9,-9,-9,-9,-9,-5,-9,-9,-9,-9,-9,0,0,0,-9,0,-9,-5,-5,-5,-5,-5,-5,-5,-5,-5,-9,-9,-9,-5,-9,0,-9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 g6 {C75: Ruy Lopez: Deferred Steinitz: 5 c3 Bd7 6 d4 without ...g6} 8. O-O b5 9. Bb3 {[#] Ng5 is the strong threat.} (9. Bc2 Bg7 10. dxe5 dxe5 11. Nb3 O-O 12. Be3 Qc8 13. Nc5 Rd8 14. Qe2 Be8 15. a4 Nh5 16. Bd3 bxa4 17. Bxa6 Qb8 18. Bb5 a3 19. Na6 axb2 20. Qxb2 {½-½ (20) Tari,A (2596)-Motylev,A (2663) Moscow 2017}) 9... Bg7 {White is slightly better.} 10. Qe2 $146 ({Predecessor:} 10. dxe5 dxe5 11. Re1 Qe7 12. Nf1 Na5 13. Bc2 Rd8 14. Bg5 h6 15. Bh4 {1-0 (47) Todorovic,J (2417)-Batricevic,S (2267) Niksic 2014}) 10... O-O (10... exd4 {keeps more tension.} 11. cxd4 O-O 12. h3 Re8 13. Qd1 a5) 11. dxe5 Nxe5 12. Nxe5 dxe5 13. Rd1 c5 14. Nf1 {[%cal Bd2f1,Bf1e3,Be3d5][%mdl 32]} c4 15. Bc2 Qc7 16. Bg5 Bc6 (16... Bg4 $5 {[%cal Rg4e2]} 17. f3 Be6 $11) 17. a4 h6 18. Bxf6 Bxf6 19. Ne3 Qb7 20. Nd5 Bg7 (20... Be7 $5) 21. b3 cxb3 22. Bxb3 Rfd8 23. axb5 axb5 24. g3 Kh8 25. c4 bxc4 {The position is equal.} 26. Qxc4 Rac8 {[#] Hoping for ...Bxd5.} 27. Qd3 f5 28. f3 Rf8 {[%cal Bd8f8,Bf8f7,Bf7b7][%mdl 32]} 29. Ra2 fxe4 30. fxe4 Rf7 31. Bc4 Rcf8 32. Qb3 Qxb3 33. Bxb3 Rb7 34. Bc4 Bd7 35. Rda1 Kh7 36. Ra7 Rfb8 37. Rxb7 Rxb7 38. h4 h5 39. Ra2 Kh6 40. Rf2 Be6 41. Kg2 Ra7 42. Ra2 (42. Ne3 $5 {[%cal Rc4e6]} Bc8 43. Bd5 $11) 42... Rb7 43. Rf2 Rb8 44. Rc2 Bd7 45. Ne3 Bf8 46. Bd5 Bd6 47. Bf7 Ba4 48. Ra2 Bb5 49. Bc4 Be8 50. Bd5 Bc5 51. Nc4 Bd4 52. Ra8 (52. Ra6 {is interesting.} Bd7 53. Rf6 Bg4 54. Nd6 Rb2+ 55. Kh1) 52... Rxa8 53. Bxa8 $11 {[%mdl 4096] Endgame KBB-KBN} Ba4 54. Bd5 Kg7 55. Nd2 Kf6 56. Nf3 Bc3 57. Ng5 Bc2 58. Nh7+ Ke7 59. Ng5 Bb2 60. Nh7 Bc1 61. Ng5 Bb1 62. Nh7 Kd6 63. Kf3 Ke7 64. Ng5 Bc2 65. Kf2 Bd1 66. Nh7 Bg4 67. Ng5 Bb2 68. Bf7 Bd4+ 69. Kg2 Kf6 {Threatens to win with ...Be3.} 70. Bd5 Be3 71. Nh7+ Ke7 72. Ng5 Bc1 73. Nh7 Bh6 74. Ng5 Bd1 75. Kf2 Ba4 76. Kf3 Be8 77. Kf2 Bg7 78. Kf3 Bf6 79. Nh7 Bg7 80. Ng5 Bf6 81. Nh7 Bg7 {Precision: White = 63%, Black = 52%.} 1/2-1/2

