[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Iturrizaga Bonelli, Eduardo"]
[Black "Remicio Duque, John H"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2663"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,56,21,74,-5,34,27,99,103,102,100,102,108,109,114,110,104,144,146,157,147,200,185,240,242,267,267,269,269,272,266,269,263,272,265,272,270,272,264,270,280,374,359,331,250,353]} 1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. Bg2 e6 5. O-O Nbd7 6. d4 dxc4 7. a4 Bb4 {LiveBook: 8 Games. E04: Open Catalan: 5 Nf3} (7... b6 $11) (7... a5 8. Qc2 b5 9. axb5 cxb5 10. Ne5 Nd5 11. Nc3 Nxe5 12. dxe5 Nb4 13. Qe4 Rb8 14. Rd1 Qc7 15. Bg5 Bd7 {1-0 (26) Perez Ponsa,F (2586)-Flores,D (2590) Villa Martelli 2016}) 8. Nfd2 (8. Nbd2 $16) 8... O-O $146 ({Predecessor:} 8... e5 9. Nxc4 exd4 10. Qxd4 O-O 11. Bf4 Nc5 12. Nd6 a5 13. Qe3 Be6 14. Nc3 Bb3 15. Rfc1 {1-0 (51) Chekletsov,I (2113)-Rydl,J (2427) Pardubice 2015}) 9. Nxc4 Re8 (9... Qe7 $11) 10. a5 $16 Qe7 11. Qb3 Nb8 12. Nc3 Na6 13. Rd1 Rd8 14. Na2 Bd7 15. e4 Be8 16. Bf4 Rac8 (16... h6 $16 17. Nxb4 Nxb4) 17. Rac1 h6 (17... Nd5 {was worth a try.}) 18. Nxb4 $18 Qxb4 19. Qxb4 Nxb4 20. Nd6 Rc7 21. Nxe8 Nxe8 22. Bxc7 Nxc7 23. Bf1 f5 24. f3 Kf7 25. Kf2 g5 26. Rc3 b6 27. axb6 axb6 28. Be2 Ke8 {Precision: White = 86%, Black = 32%.} (28... b5 $142 29. Rcc1 Kg7) 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Iturrizaga Bonelli, Eduardo"]
[Black "Remicio Jhon"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2663"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,56,22,26,73,-4,31,43,100,102,96,95,114,98,110,96,110,97,135,141,169,133,203,187,243,242,269,273,277,290,277,277,288,286,275,260,264,257,268,264,277,266,388,383,354,268,361]} 1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. Bg2 e6 5. O-O Nbd7 6. d4 dxc4 7. a4 Bb4 {E04: Open Catalan: 5 Nf3} (7... a5 8. Qc2 b5 9. axb5 cxb5 10. Ne5 Nd5 11. Nc3 Nxe5 12. dxe5 Nb4 13. Qe4 Rb8 14. Rd1 Qc7 15. Bg5 Bd7 {1-0 (26) Perez Ponsa,F (2586)-Flores,D (2590) Villa Martelli 2016}) 8. Nfd2 (8. Nbd2 $16) 8... O-O $146 ({Predecessor:} 8... e5 9. Nxc4 exd4 10. Qxd4 O-O 11. Bf4 Nc5 12. Nd6 a5 13. Qe3 Be6 14. Nc3 Bb3 15. Rfc1 {1-0 (51) Chekletsov,I (2113)-Rydl,J (2427) Pardubice 2015}) 9. Nxc4 Re8 (9... Qe7 $14) 10. a5 $16 Qe7 11. Qb3 Nb8 12. Nc3 Na6 13. Rd1 Rd8 14. Na2 Bd7 15. e4 Be8 16. Bf4 Rac8 (16... h6 $16 17. Bf3 Rd7) 17. Rac1 h6 (17... Nd5 {keeps fighting.} 18. exd5 cxd5) 18. Nxb4 $18 Qxb4 19. Qxb4 Nxb4 20. Nd6 Rc7 21. Nxe8 Nxe8 22. Bxc7 Nxc7 23. Bf1 f5 24. f3 Kf7 25. Kf2 g5 26. Rc3 b6 (26... Rd7 {was necessary.} 27. Rc4 Nba6) 27. axb6 axb6 28. Be2 Ke8 {Precision: White = 86%, Black = 22%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Cordova, Emilio"]
[Black "Ramirez Gonzalez, Mauricio"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2651"]
[BlackElo "2108"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,59,65,54,47,45,77,81,106,65,84,74,82,91,122,109,135,135,142,148,150,141,150,141,241,268,488,416,436,442,831,810,815,797,1037,1013,2738,2679,2151,964]} 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8e6][%mdl 32]} 8. Bd3 Nf8 9. Nf3 Ne6 10. Bh4 g6 11. O-O Ng7 12. b4 O-O {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} (12... a6 13. Bxf6 Bxf6 14. a4 O-O 15. b5 a5 16. bxc6 bxc6 17. Ne2 Bd7 18. Rab1 Rb8 19. Nf4 Qe7 20. Be2 {½-½ (59) Harikrishna,P (2679)-Grachev,B (2610) Dagomys 2008}) 13. b5 cxb5 14. Nxb5 Bf5 $146 {White is better.} ({Predecessor:} 14... Be6 15. Rfc1 Nfe8 16. Bxe7 Qxe7 17. Qc5 Qxc5 18. dxc5 f6 19. Rab1 Rf7 20. Nfd4 {½-½ (82) Geller,E-Barcza,G Stockholm 1962}) 15. Bxf5 Nxf5 16. Bxf6 $1 Bxf6 17. Qb3 Qa5 18. Rac1 Rac8 19. Qxd5 Rxc1 20. Rxc1 {[%cal Bf1c1,Bc1c7,Bc7c8][%mdl 32]} a6 21. Nc3 Qa3 {[#]} 22. Ne2 $1 Re8 (22... Rd8 $16 {is a better defense.} 23. Qxb7 Qxa2) 23. Rc7 $18 Re7 $2 (23... Ne7 {was necessary.} 24. Qxb7 Qxa2) 24. Rc8+ Kg7 25. Qd8 {[%csl Gc8][%cal Rd8f8] White is clearly winning.} Rxe3 (25... Kh6 $142 26. h3 Re6) 26. Qg8+ Kh6 27. fxe3 Ne7 28. Qxf7 {[#] White wants to mate with Qf8+.} Qxe3+ 29. Kf1 Nxc8 30. Qxf6 {Precision: White = 97%, Black = 21%.} (30. Qf8+ $142 Bg7 31. Qxc8) 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Kovalyov, Anton"]
[Black "Chirivi C, Angie Lizeth"]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2643"]
[BlackElo "2105"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,123,35,35,47,52,104,87,87,94,93,99,79,80,140,135,127,102,91,64,66,61,44,-3,16,0,0,-27,6,0,43,-6,-3,-38,-32,-32,16,33,56,58,69,33,56,18,91,84,86,47,48,57,98,93,132,81,157,148,185,22,17,0,0,0,33,8,124,138,158,135,155,162,210,209,209,206,198,165,192,186,185,143,227,254,246,194,497,516,610,558,1142,1041,987,960,12840,12840,12841,12841,12841,12837,29988,29989,29989,29990,29990,29991,29991,29992,29992,12849,12849,12850]} 1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. Bf4 O-O 8. Rd1 c6 9. e4 Be6 {D90: Grünfeld: 4 Nf3 Bg7 sidelines} 10. Qc2 Bc4 $146 (10... Bg4 $14) ({Predecessor:} 10... Bg4 11. Be2 Bxf3 12. Bxf3 Bxd4 13. Ne2 c5 14. b4 Qc8 15. Nxd4 cxd4 16. Qb3 Qc3+ 17. Qxc3 dxc3 {½-½ (37) Can,E (2555)-Anwuli,D (2365) Dubai 2016}) 11. Bxc4 $16 Nxc4 {White is better.} 12. Qe2 Nb6 13. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} N8d7 14. e5 e6 (14... Nd5 $142 15. Nxd5 cxd5) 15. h5 Nd5 16. Nxd5 cxd5 17. Ng5 {[%cal Bf3g5,Bg5h3,Bh3f2][%mdl 32]} h6 $1 {[%cal Rh6g5]} 18. Nh3 g5 19. Bd2 (19. Nxg5 $5 Qa5+ 20. Kf1 $14) 19... f5 20. exf6 Qxf6 21. f4 g4 22. Qxg4 Qxd4 (22... Qf5 $5 {[%cal Rf5g4]} 23. Nf2 Rac8 $11) 23. Nf2 Rae8 24. O-O {[#] Strongly threatening Bc3.} Qxb2 25. Rfe1 Nf6 26. Qg6 Ne4 27. Nxe4 dxe4 28. Be3 $40 {[%mdl 128] White attacks.} (28. Bc1 $5 {[%cal Rc1b2]} Qf6 29. Qxe4 $14 (29. Rxe4 Qxg6 30. hxg6 Rf6 $11)) 28... Qf6 29. Rd7 Re7 (29... Qxg6 $11 30. hxg6 b5) 30. Rxe7 Qxe7 31. Rc1 Kh8 32. Qxe4 b6 33. g3 Qd7 34. Kg2 ({White should try} 34. g4) 34... Rg8 (34... Qb5 $142) 35. Rc6 Qd1 36. Qf3 $2 (36. Rxe6 $18 {Hoping for Bd4!} Qe2+ 37. Bf2 Qxa2 38. Rd6 (38. Re7 a5 $18)) 36... Qa4 $1 $11 37. Rc7 (37. a3 $5) 37... Qxa2+ 38. Kh3 Qa1 39. Re7 (39. Rc6 $5 {[%cal Rc6e6]}) 39... Qa5 (39... Qa2 $11 {remains equal.}) 40. g4 $16 (40. Rxe6 $6 Qf5+ 41. Qg4 Qd5 $11) 40... Qa2 41. Qe4 Qe2 42. Rxe6 Bf6 43. Qg2 Qd3 44. Qf3 ({Don't play} 44. Rxf6 $6 Qxe3+ 45. Qg3 Qxg3+ 46. Kxg3 Kh7 $14) 44... Rf8 45. Kg2 Qc2+ 46. Kg3 {[#] Rxf6! is the strong threat.} Qc3 47. Qd1 a5 (47... b5 $16 {was called for.}) 48. Qd2 $18 Qxd2 49. Bxd2 {[%mdl 4096] Endgame KRB-KRB} Bd4 $2 (49... Kg7 {is more resistant.} 50. Rxb6 Ra8) 50. Rxh6+ Kg7 51. Rd6 Bc5 52. Bc3+ Kf7 53. Rf6+ Ke8 54. Rxf8+ Bxf8 {KB-KB} 55. g5 {[%cal Bg4g5,Bg5g6][%mdl 32]} Kf7 56. Kg4 Bg7 57. g6+ Kg8 58. Bxg7 Kxg7 59. Kg5 a4 60. h6+ Kg8 61. Kf6 (61. h7+ $142 Kg7 62. f5 Kf8 63. h8=Q+ Ke7 64. g7 Kd6 65. g8=Q Kc6 66. Qe8+ Kd5 67. Qhe5+ Kc4 68. Q8b5#) 61... a3 62. h7+ {Precision: White = 54%, Black = 28%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Delgado Ramirez, Neuris"]
[Black "Salcedo, Pablo Esteban"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2613"]
[BlackElo "2103"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,23,77,58,55,63,76,23,86,66,123,91,98,97,134,134,181,52,64,43,45,58,102,95,102,91,104,99,122,98,130,132,141,138,145,137,156,149,168,162,179,184,182,178,185,191,187,180,176,195,338,343,422,421,417,416,391,375,419,426,1070,1083,1078,994,1047,1041,1018,953,954,941,873,745,1709,1712]} 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 e5 ({Avoid the trap} 5... Nxe4 $2 6. d5 $18) (5... cxd4 $11 6. cxd4 Nxe4) 6. dxe5 {B50: Sicilian: 2...d6, Miscellaneous} (6. d5 Ne7 7. O-O Ng6 8. Re1 Be7 9. Nfd2 O-O 10. Bf1 Ne8 11. Nc4 f5 12. Nbd2 Bg5 13. a4 Nf6 {1-0 (59) Sivokho,S (2483)-Frolov,A (2297) St Petersburg 2004}) 6... dxe5 7. Qxd8+ Kxd8 8. Bb5 $146 ({Better is} 8. Nbd2 $16) ({Predecessor:} 8. Bg5 Be7 9. Nbd2 Ng4 10. Nc4 Bxg5 11. Nxg5 Ke7 12. Bxg4 Bxg4 13. Ne3 Be6 14. Nxe6 Kxe6 {1-0 (48) Xu,X (2101)-Nanjo,R (2321) Bangkok 2014}) 8... Bg4 (8... Bd6 $11) 9. Nbd2 Bd6 (9... Nd7 $14) 10. Bxc6 bxc6 11. Nc4 Kc7 12. Nfxe5 Be6 13. f3 (13. Nxd6 $18 Kxd6 14. Bf4) 13... Nd7 $1 $14 14. Nxd6 Nxe5 15. Nf5 Nd3+ 16. Ke2 Nxc1+ 17. Rhxc1 Bxf5 18. exf5 $16 {[%mdl 4096] Endgame KRR-KRR} Rhe8+ 19. Kf2 Rab8 20. Rc2 Re5 21. g4 Rbe8 22. Rd1 f6 23. Rd3 R8e7 24. Rcd2 Re1 25. Rd8 Rh1 26. Kg3 Rg1+ 27. Kf4 h6 28. R8d3 Rge1 29. Kg3 R1e2 (29... Rf1 {is a better defense.} 30. c4 Rg1+ 31. Kf4 Ra1) 30. Rd7+ $18 Kb6 31. Rxe2 Rxd7 {KR-KR} 32. Kh4 Kb5 33. Kh5 Kc4 34. Re3 a5 (34... Kb5 $142 35. Kg6 Rb7) 35. b3+ Kb5 36. a4+ Kb6 37. c4 Kc7 38. Kg6 Kd8 39. h4 Rb7 40. f4 Rd7 41. g5 {Precision: White = 73%, Black = 29%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Pichot, Alan"]
[Black "Saltos Velez, Adrian"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2577"]
[BlackElo "2099"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,47,50,50,128,122,110,123,126,66,125,90,173,181,220,218,295,291,303,299,356,318,350,311,300,302,547,563,445,437,443,454,444,435,408,406,417,353]} 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Na3 {B27: Sicilian: 2 Nf3, unusual Black 2nd moves} d6 (6... Nf6 7. Be3 Qa5 8. Nc4 Qc7 9. e5 Ng4 10. Bf4 b5 11. Ne3 Nxe3 12. fxe3 e6 13. Bxb5 Qb6 {½-½ (32) Nepomniachtchi,I (2705)-Guseinov,G (2649) Ashdod 2015}) 7. Nb5 {LiveBook: 33 Games. Hoping for Be3.} b6 (7... a6 $14 8. Be3 Qc6) 8. Be3 $16 {White is better.} Qc6 9. Qb3 Be6 10. Qb4 $146 (10. Qa4 $16 Bd7 11. Qc4) ({Predecessor:} 10. Qa4 Kf8 11. Nfd4 Bxd4 12. Qxd4 Nf6 13. f3 h5 {1-0 (45) Czarnota,P (2530)-Goslawski,M (1990) Krakow 2009}) 10... Qb7 (10... Qc8 $14) 11. Ng5 {Strongly threatening Qa4.} ({Reject} 11. Qxd6 $6 exd6 12. Nxd6+ Kd8 $11) 11... Nc6 (11... a6 $16 {was called for.}) 12. Qxd6 $1 $18 exd6 13. Nxd6+ Kd7 14. Nxb7 Kc7 15. O-O-O Bxa2 16. Nd6 Nh6 17. Bc4 Bxc4 18. Nxc4 b5 $2 {[#]} (18... Ne5 {was necessary.}) 19. Bf4+ Kb7 20. Nd6+ Ka6 21. Kc2 Be5 22. Ra1+ Kb6 23. Be3+ Kc7 24. Ndxf7 {Precision: White = 85%, Black = 36%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Peralta, Fernando"]
[Black "Benavides Montenegro, Maicol"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2569"]
[BlackElo "2090"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,79,0,26,32,73,65,65,64,54,24,33,25,63,52,97,109,179,186,202,183,176,142,183,191,164,81,66,60,96,102,104,104,153,159,173,163,395,383,365,268,311,312,442,438,618,542,595,587,12837,12837,12840,12840,12841,12841,12841,12841,29980,29979,12845,12845]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 c5 7. Nf3 cxd4 8. Nxd4 Nc6 9. Be2 Bd7 10. O-O Rc8 11. Nb3 Ne5 12. Nd2 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} (12. c5 Bc6 13. Qb1 dxc5 14. Nxc5 b6 15. Nb3 Bb7 16. Nd2 Nc6 17. Rd1 Qc7 18. a3 Rfd8 19. Qa2 e6 {½-½ (65) Cramling,P (2488)-Arakhamia Grant,K (2435) Catalan Bay 2004}) 12... Bc6 13. b4 $146 ({But not} 13. Bxa7 b6 $15) ({Predecessor:} 13. f4 Ned7 14. Bf3 b6 15. Qe2 Re8 16. g4 h6 {1-0 (34) Faraj,Y (2252)-Elbaba,E (2185) Beirut 2009}) 13... b6 14. Rc1 {White is slightly better.} Ba8 15. f4 Nc6 16. a3 Nd7 17. Nb3 $36 {[%mdl 2048] White is pushing.} f5 18. Bf3 Nf6 (18... Qe8 $16) 19. exf5 $18 gxf5 20. b5 Na5 21. Bxa8 Rxa8 22. Nxa5 bxa5 23. Nd5 (23. Qd3 $18) 23... Ne4 $16 24. Bd4 Bxd4+ 25. Qxd4 e6 {[#]} 26. Nc3 $1 Qf6 {[#]} 27. Rfd1 $1 Nxc3 28. Rxc3 {aiming for Qxf6.} Rad8 $2 (28... Qxd4+ {was worth a try.} 29. Rxd4 Rad8) 29. Rg3+ $18 Kh8 30. Qxf6+ Rxf6 {[%mdl 4096] Endgame KRR-KRR} 31. Rgd3 Rc8 (31... d5 {is a better defense.} 32. cxd5 exd5 33. Rxd5 Rxd5 34. Rxd5 a4 35. Rd8+ Kg7 36. Rd7+ Rf7) 32. Rxd6 Rxc4 (32... Rf7 $142 33. Rc1 (33. Rxe6 Rxc4 34. Ra6 Kg7 $16) 33... Rb7) 33. Rd7 Kg8 {If only Black now had time for ...Rf7....} 34. Rxa7 Rf7 35. b6 {[%cal Bb5b6,Bb6b7][%mdl 32]} Rc8 36. Rdd7 Rxd7 37. Rxd7 Rc1+ 38. Kh2 Rc8 39. b7 {[%cal Rb7c8]} Rb8 40. Rc7 {Precision: White = 82%, Black = 28%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Cruz, Cristhian"]
[Black "Castano, Jhon Edison"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2558"]
[BlackElo "2088"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,67,0,16,12,11,12,29,32,37,40,120,55,42,35,89,86,71,30,71,71,65,81,66,64,81,39,56,45,50,19,22,18,25,21,16,14,27,18,114,121,161,145,225,137]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Rc1 Qa5 9. Qd2 O-O 10. Nf3 Rd8 11. d5 e6 12. Be2 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} (12. d6 Qa4 13. h4 Qxe4 14. h5 Qd5 15. Qc2 Rxd6 16. hxg6 hxg6 17. Ng5 Nc6 18. Ne4 Rd7 19. Bg5 Bxc3+ 20. Qxc3 Qxe4+ {0-1 (40) Harikrishna,P (2750)-Svidler,P (2755) Moscow 2017}) 12... exd5 13. exd5 Nc6 {LiveBook: 4 Games} 14. Bg5 {The position is equal.} f6 15. Bf4 Be6 (15... c4 $5) 16. c4 Nb4 $1 17. O-O Bf5 $146 {[#]} (17... Bf7 $14) ({Predecessor:} 17... Bf7 18. Ra1 Qa3 19. Bd1 Re8 {½-½ (58) Sohal,T (2331)-Wu,R (2106) Victoria 2015}) 18. Ra1 ({Better is} 18. a3 $1 $16 {[%cal Ra3b4]} Qxa3 19. Ra1) 18... Qa3 $14 19. Rfc1 g5 ({Black should try} 19... Re8 $14) 20. Be3 $16 b6 21. Ne1 (21. Rc3 $5 {[%cal Rc3a3]} Qa4 22. h3 $14) 21... Rd7 22. Rc3 Qa4 23. Bd1 {[%cal Be2d1,Bd1b3,Bb3a4,Ba4c6][%mdl 32]} Qa6 24. Qb2 {Strongly threatening a3.} Rad8 25. Bb3 {Black must now prevent a3.} Qc8 26. a3 Na6 27. Rd1 Nc7 28. a4 Ne8 29. a5 $36 {[%mdl 2048] White has the initiative.} Nd6 30. Ba4 Rb7 31. axb6 Rxb6 (31... axb6 $11 {remains equal.} 32. Bc6 Rb8) 32. Qe2 Rb4 {[#]} 33. Bc6 $1 Nb7 (33... Ne4 $16 34. Ra3 Bf8) 34. Rcc1 {Precision: White = 57%, Black = 38%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Cruz, Cristhian"]
[Black "Castano, Jhon Edison"]
[Result "*"]
[ECO "D85"]
[WhiteElo "2558"]
[BlackElo "2088"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,33,14,15,10,15,0,43,31,22,27]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Rc1 Qa5 9. Qd2 O-O 10. Nf3 Rd8 11. d5 e6 12. Be2 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} (12. d6 Qa4 13. h4 Qxe4 14. h5 Qd5 15. Qc2 Rxd6 16. hxg6 hxg6 17. Ng5 Nc6 18. Ne4 Rd7 19. Bg5 Bxc3+ 20. Qxc3 Qxe4+ {0-1 (40) Harikrishna,P (2750)-Svidler,P (2755) Moscow 2017}) 12... exd5 13. exd5 Nc6 {LiveBook: 4 Games} 14. Bg5 f6 15. Bf4 Be6 (15... c4 $5) 16. c4 {[#] Strongly threatening Qxa5.} Nb4 $1 17. O-O {Predecessor:} Bf7 $146 18. Ra1 Qa3 19. Bd1 Re8 {½-½ (58) Sohal,T (2331)-Wu,R (2106) Victoria 2015} *

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Bacallao Alonso, Yusnel"]
[Black "Gonzalez, Eleicer"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2554"]
[BlackElo "2078"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,32,35,44,75,50,57,45,59,39,50,35,45,0,0,-9,0,-11,-8,-14,9,0,41,26,27,0,19,21,20,25,32,27,47,47,47,43,45,35,41,34,50,11,23,0,0,0,0,0,0,0,0,0,0,0,93,-12,-12,-16,-13,-18,-10,-31,-14,-25,-23,-35,-8,-8,-8,-102,502,439,812,774,29987,29988,29988,29989,29989,29990,29990,29991,29991,29969,29969,29970,4933,29962,29966,29966,29967,29968,29968,29940]} 1. Nf3 Nf6 2. c4 d6 3. d4 Bg4 4. Qb3 b6 (4... Qc8 5. Nc3 g6 6. h3 Bxf3 7. exf3 Bg7 8. Be2 O-O 9. Be3 e5 10. dxe5 dxe5 11. f4 Nc6 12. fxe5 Nxe5 13. O-O {½-½ (27) Donchenko,A (2569)-Krasenkow,M (2610) Drancy 2016}) 5. g3 g6 $146 ({Predecessor:} 5... e6 6. Bg2 Bxf3 7. Bxf3 d5 8. Nc3 c6 9. cxd5 exd5 10. O-O Be7 11. Bg5 Nbd7 12. e4 dxe4 13. Nxe4 {1-0 (41) Sorokin,A (2085)-Nuretdinov,A (1881) Porto Carras 2013}) 6. Bg2 {A53: Old Indian Defence without Nf3} c6 7. O-O (7. h3 $5 {[%cal Rh3g4]} Bc8 8. O-O $16) 7... Bg7 8. Nc3 {White is slightly better.} O-O 9. e4 Nbd7 10. Be3 e5 11. d5 ({White should try} 11. Rad1 $14) 11... cxd5 $11 12. cxd5 Nc5 13. Bxc5 bxc5 14. Nd2 Rb8 15. Qc2 Qd7 16. Nc4 Qc7 17. Rfe1 Rb4 18. Bf1 Bd7 19. a3 Rb7 20. a4 Rfb8 {[#]} 21. Nb5 $1 {[%mdl 512]} Bxb5 22. axb5 Rxb5 23. Ra6 Bf8 24. Rea1 {[%mdl 1024] White has compensation.} R8b7 25. Bh3 Ne8 26. R1a2 Qb8 27. Rc6 Nc7 28. Bf1 Rb4 29. Nxd6 Rxb2 30. Rxb2 Rxb2 31. Qc3 Rb6 (31... Rb1 $11 32. Nc4 (32. Qxe5 Bxd6 33. Qxd6 Qb5 $11) 32... Nb5 33. Qxe5 Qd8) 32. Rxb6 ({Don't go for} 32. Qxc5 $2 Ne8 $19) (32. Qxe5 $16 {Threatens to win with Nxf7!} Nxd5 33. Qxd5 Bxd6 34. Bc4) 32... axb6 33. Nc4 Bg7 34. Qb3 b5 35. Na5 Qb6 36. Nc6 (36. Nc4 $5 {[%cal Rc4b6]} Qb8 37. d6 $15) 36... Bf6 37. h4 Kg7 38. h5 b4 39. Qf3 (39. Kg2 $11 {remains equal.}) 39... h6 $2 {[%mdl 8192] [#]} (39... Ne8 $17 {stays on course. aiming for ...b3.} 40. Qb3 gxh5) 40. hxg6 $1 $18 fxg6 {[#]} (40... Ne6 $142 41. gxf7 Nf8 42. Qg4+ Bg5) 41. Qg4 $1 {[%cal Rg4d7]} Ne8 42. Qd7+ Kf8 43. d6 h5 44. Bc4 {[%csl Gc4][%cal Rd7f7]} Nxd6 45. Qxd6+ Kg7 46. Qe6 Qc7 47. Kg2 Qb7 48. Bd5 Qc7 {White mates.} 49. Kh3 g5 50. Kg2 Kg6 {[#]} 51. f4 $1 {Precision: White = 51%, Black = 49%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Bacallao Alonso, Yusnel"]
[Black "Gonzalez Feliz, Jesus Eliezer"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2554"]
[BlackElo "1845"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,39,34,25,62,45,50,54,57,45,45,33,47,0,0,0,-4,0,0,0,9,-9,53,29,25,10,25,25,22,22,22,20,40,40,40,40,41,38,45,42,33,0,27,0,0,0,0,0,0,0,0,0,0,0,95,-15,-15,-16,-10,-10,-11,-21,-22,-37,-41,-45,-1,-3,-4,-97,431,296,878,937,29987,29988,29988,29989,29989,29990,29990,29991,29990,12814,5918,6823,5918,5718,5025,2091,29987,9239,2413,2073]} 1. Nf3 Nf6 2. c4 d6 3. d4 Bg4 4. Qb3 b6 (4... Qc8 5. Nc3 g6 6. h3 Bxf3 7. exf3 Bg7 8. Be2 O-O 9. Be3 e5 10. dxe5 dxe5 11. f4 Nc6 12. fxe5 Nxe5 13. O-O {½-½ (27) Donchenko,A (2569)-Krasenkow,M (2610) Drancy 2016}) 5. g3 g6 $146 ({Predecessor:} 5... e6 6. Bg2 Bxf3 7. Bxf3 d5 8. Nc3 c6 9. cxd5 exd5 10. O-O Be7 11. Bg5 Nbd7 12. e4 dxe4 13. Nxe4 {1-0 (41) Sorokin,A (2085)-Nuretdinov,A (1881) Porto Carras 2013}) 6. Bg2 {A53: Old Indian Defence without Nf3} c6 7. O-O Bg7 8. Nc3 {White is slightly better.} O-O 9. e4 Nbd7 10. Be3 e5 11. d5 (11. Rad1 $14) 11... cxd5 $11 12. cxd5 Nc5 13. Bxc5 bxc5 14. Nd2 Rb8 15. Qc2 Qd7 (15... Bd7 $11) 16. Nc4 (16. f3 $5 {[%cal Rf3g4]} Bh3 17. Bxh3 Qxh3 18. Nc4 $14) 16... Qc7 17. Rfe1 Rb4 18. Bf1 Bd7 19. a3 Rb7 20. a4 Rfb8 {[#]} 21. Nb5 $1 {[%mdl 512]} Bxb5 22. axb5 Rxb5 23. Ra6 Bf8 24. Rea1 {[%mdl 1024] White has compensation.} R8b7 25. Bh3 Ne8 26. R1a2 Qb8 27. Rc6 {Hoping for Rc8.} Nc7 28. Bf1 Rb4 29. Nxd6 Rxb2 30. Rxb2 Rxb2 31. Qc3 Rb6 (31... Rb1 $1 $11 32. Nc4 (32. Qxe5 Bxd6 33. Qxd6 Qb5 $11) 32... Nb5 33. Qxe5 Qd8) 32. Rxb6 ({Wrong is} 32. Qxc5 $2 Ne8 $19) (32. Qxe5 $16 {Strongly threatening Nxf7!} Nxd5 33. Qxd5 Bxd6 34. Bc4) 32... axb6 33. Nc4 Bg7 34. Qb3 b5 35. Na5 Qb6 36. Nc6 Bf6 37. h4 Kg7 38. h5 b4 39. Qf3 (39. Kg2 $11) 39... h6 $2 {[%mdl 8192] [#]} (39... Ne8 $17 {and life is bright. Threatens to win with ...b3.} 40. Qb3 Nd6) 40. hxg6 $1 $18 fxg6 $2 {[#]} (40... Kxg6 41. Qg4+ Kh7) 41. Qg4 $1 {[%cal Rg4d7]} Ne8 42. Qd7+ Kf8 43. d6 h5 44. Bc4 {[%csl Gc4][%cal Rd7f7]} Nxd6 45. Qxd6+ Kg7 46. Qe6 (46. Qd7+ $142 Kh6 47. Bg8 Qxc6 48. Qxc6 Kg7 49. Qe6 Kh8 50. Qe8 Bg7 51. Bf7+ Kh7 52. Bxg6+ Kh6 53. Bf5 Kg5 54. Qg6#) 46... Qc7 47. Kg2 Qb7 48. Bd5 Qc7 49. Kh3 g5 50. Kg2 (50. Qg8+ $142 Kh6 51. Bf7 Bg7 52. Be8 g4+ 53. Kg2 Qd6 54. Qf7 Kh7 55. Ne7) 50... Kg6 {[#]} 51. f4 $1 {Precision: White = 48%, Black = 50%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Lotero, Faiber"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2553"]
[BlackElo "2092"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,61,89,86,79,56,64,56,56,54,64,50,62,45,52,45,60,38,56,38,71,62,149,122,205,193,202,185,248,235,438,458,551,542,794,763,859,862,802,741,1083,1077,1262,1135]} 1. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Nf6 2. Nf3 g6 3. c4 c5 4. d5 d6 5. Nc3 Bg7 6. e4 O-O 7. h3 e6 8. Bd3 exd5 9. exd5 a6 {E90: King's Indian: Classical: Early deviations and 6 h3} (9... Nbd7 10. O-O Nh5 11. Re1 Ne5 12. Be2 Nd7 13. Bg5 Bf6 14. Qd2 Ne5 15. Bxf6 Nxf3+ 16. Bxf3 Nxf6 17. Qf4 a6 {1-0 (92) Kazhgaleyev,M (2594)-Vasquez Schroder,R (2554) chess.com INT 2017}) 10. O-O Re8 11. Bf4 {LiveBook: 4 Games} Nh5 {White is better.} 12. Bg5 f6 $146 ({Predecessor:} 12... Qb6 13. Re1 Bd7 14. Ne4 f5 15. Ned2 h6 16. Rxe8+ Bxe8 17. Qe2 Bf7 {1-0 (31) Gudilina,G (2057)-Mukhametgaleeva,R Smolensk 2008}) 13. Bd2 {[#] g4 is the strong threat.} f5 $1 14. Ng5 Be5 15. Qc1 Ng7 16. f4 Bd4+ 17. Kh2 Nd7 18. Nf3 Bf6 19. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Nf8 20. a5 h6 {[#]} (20... b6 $14) 21. Na4 $1 $16 Nh7 (21... Rb8 $16 22. g3 Bd7) 22. Nb6 Rb8 23. Qc2 g5 (23... Nf8 $142 24. Rae1 Bd7) 24. g3 {[%cal Bg2g3,Bg3f4][%mdl 32]} gxf4 $2 (24... Bd7 {might work better.} 25. Rae1 Qc7) 25. gxf4 $18 {White is clearly winning.} Nf8 26. Rg1 Kf7 27. Rg2 Nd7 28. Nxc8 Rxc8 29. Bxf5 Re7 30. Rag1 Rc7 31. Be6+ {Precision: White = 72%, Black = 24%.} 1-0

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Zapata, Juan Carlos"]
[Black "Bachmann, Axel"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2110"]
[BlackElo "2653"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,101,21,0,0,-18,-14,-8,0,0,0,0,0,0,0,-21,2,-20,-14,-26,-16,-16,-14,-26,-27,-28,-37,-29,-27,-47,-38,-72,-72,-68,-77,-74,-61,-73,-59,-55,-52,-55,-55,-46,-57,-71,-69,-68,-39,-61,-58,-84,-68,-105,-43,-59,-51,-60,-52,-100,-81,-103,-104,-104,-32,-49,-49,-127,-106,-203,-198,-191,-190,-177,-184,-273,-197,-206,-218,-195,-181,-175,-182,-350,-344,-647,-623,-645,-642,-633,-623,-615,-607,-715]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. Nc3 b6 6. g3 Ba6 {E11: Bogo-Indian} (6... Bb7 7. Bg2 O-O 8. O-O d6 9. d5 exd5 10. Nxd5 Bxd2 11. Qxd2 Nbd7 12. Nd4 Nc5 13. b3 Re8 14. Nc6 Qd7 15. Nxf6+ gxf6 16. Nd4 Bxg2 17. Kxg2 {1-0 (42) Romanov,E (2635)-Iordachescu,V (2581) Kishinev 2016}) 7. b3 d5 8. cxd5 exd5 {The position is equal.} 9. Bg2 O-O 10. O-O Re8 {Hoping for ...Bxc3.} 11. Re1 Nbd7 12. a3 Bd6 13. Nxd5 $146 ({Predecessor:} 13. Nh4 Bb7 14. Nb5 {½-½ (41) Schandorff,L (2335)-Kroll,O (2330) Aarhus 1986}) 13... Nxd5 14. e4 Bb7 15. exd5 Bxd5 16. Bc3 Rxe1+ 17. Nxe1 Nf6 18. Bxd5 Nxd5 19. Bb2 Qf6 20. Qf3 Qxf3 21. Nxf3 a4 22. b4 f6 23. Kf1 Kf7 24. Ke2 g5 25. Kd3 b5 26. Re1 Rd8 27. Kc2 h5 28. Nd2 Bf8 29. Ne4 c6 30. Nc3 Nb6 31. Rd1 g4 (31... f5 $17 32. Bc1 Be7) 32. Bc1 $15 f5 33. Ne2 Bg7 34. Rd3 Nd5 35. Be3 Bf6 36. Nc3 Ne7 (36... Nb6 $17 37. Nd1 h4) 37. Ne2 h4 38. gxh4 (38. Nf4 $15) 38... Rh8 $17 39. Nf4 (39. Bf4 $17) 39... Rxh4 $19 40. d5 cxd5 41. Nxd5 Rxh2 {[#] ...g3 is the strong threat.} 42. Kd1 (42. Nxf6 {keeps fighting.} g3 43. Nd7 gxf2 44. Bxf2 Rxf2+ 45. Kc3) 42... Bh4 43. Ke1 Rh1+ 44. Ke2 Ra1 45. Nc7 Ra2+ 46. Kf1 $2 {[#]} (46. Rd2 {was the only defense.} Rxa3 47. Nxb5) 46... f4 $1 {[%cal Rf4e3,Bf5f4,Bf4f3][%mdl 544]} 47. Bd2 $2 (47. Bc5 f3 48. Ke1) (47. Bxf4 Rxf2+) 47... Ra1+ {Black is clearly winning.} 48. Ke2 f3+ 49. Ke3 g3 50. fxg3 Bxg3 {Threatens to win with ...f2.} 51. Kd4 {Precision: White = 42%, Black = 70%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Aponte Castillo, Ernesto"]
[Black "Bruzon Batista, Lazaro"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "2108"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,118,-12,-19,-21,-18,-18,-23,-15,-17,-16,-26,-27,-22,-27,-18,-23,-1,-14,-22,-33,-41,-28,-18,-22,-18,-16,-22,0,0,-43,0,0,0,0,90,64,118,125,178,170,163,177,214,211,217,168,173,58,130,136,135,129,155,159,163,153,154,122,126,120,137,54,51,50,42,0,0,0,0,-18,-39,-10,-10,-10,-8,-11,-5,-8,0,-8,-8,-8,0,0,-5,-3,-1,-9,0,0,0,0,0,-99,-99,-29974,-29975,-29975,-29976,-29976,-29977,-29977,-29978,-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982]} 1. c4 Nf6 2. Nc3 e5 3. d3 Bb4 4. Bd2 O-O 5. Nf3 Re8 6. e3 {A22: English Opening: 1...e5 2 Nc3 Nf6} c6 7. a3 Bf8 8. Be2 {Black has an edge.} d5 9. cxd5 cxd5 10. d4 e4 11. Ne5 Nbd7 $146 ({Predecessor:} 11... Bd6 12. Nb5 Bxe5 13. dxe5 Rxe5 {0-1 (29) Neverov,V (2550)-Petursson,M (2560) Oviedo 1993}) 12. Nxd7 Bxd7 13. Qb3 Bc6 14. Rc1 Qd7 15. O-O Bd6 16. f3 exf3 17. Rxf3 Re6 18. Rcf1 Qe7 19. h3 Re8 20. Bd3 {next Bf5 is good for White.} Bb8 21. Bf5 Rd6 (21... Qd6 $11) 22. Be1 $1 $16 Kh8 (22... Rf8 $14) 23. Bh4 Rg8 (23... Qf8 $16 {might work better.} 24. Bb1 Qg8) 24. Qc2 $18 h6 25. Qf2 Re8 26. Bb1 $1 {Qc2 is the strong threat.} Kg8 27. Bxf6 Rxf6 {[#]} 28. Rxf6 ({Only move:} 28. Qc2 $1 $18 {[%cal Rc2h7] Qh7+ would kill now.} Qd6 29. Qh7+ Kf8 30. g3) 28... Qxf6 ({Black should try} 28... gxf6 $14 29. Ba2 (29. Qxf6 Qxf6 30. Rxf6 Rxe3 $11) 29... Qxe3) 29. Qxf6 $16 gxf6 30. Kf2 ({But not} 30. Rxf6 $6 Rxe3 31. Kf2 (31. Rxh6 Bg3 $11) 31... Re6 $11) 30... Kf8 31. Ba2 f5 32. Bxd5 f4 33. Re1 Bxd5 34. Nxd5 fxe3+ 35. Rxe3 {[%mdl 4096] Endgame KRB-KRN} (35. Nxe3 $16 Bf4 36. g4) 35... Rd8 $14 36. Nf6 Bf4 $1 {[%cal Rf4e3]} 37. Re4 Bc1 38. Re2 Rxd4 {White must now prevent ...Rf4+.} 39. g3 Rd6 40. Re8+ Kg7 41. Nh5+ $1 Kg6 42. Nf4+ Kf6 43. Re2 $1 a5 (43... Bxf4 $5 44. gxf4 Kf5 $15) 44. Rc2 Bxf4 45. gxf4 $11 {KR-KR} Rb6 46. Kg3 Rb5 47. Kg4 Kg6 48. Rd2 f6 49. Rf2 h5+ 50. Kh4 a4 51. f5+ (51. Rg2+ $11 {remains equal.} Kh6 52. Rc2) 51... Rxf5 $17 52. Rxf5 $4 {[%mdl 8192]} (52. Rg2+ $17 Rg5 53. Rd2) 52... Kxf5 {Black mates.} 53. Kxh5 {[#] K3P-K3P} Ke4 $1 54. Kg6 f5 55. h4 f4 56. h5 f3 57. h6 f2 58. h7 f1=Q 59. h8=Q Qf5+ {Precision: White = 62%, Black = 64%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Arango, Andres Mauricio"]
[Black "Cori, Jorge"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2103"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,62,19,-12,4,-4,-10,-18,-12,-63,-58,-77,-74,-94,-98,-108,-96,-104,-108,-181,-186,-191,-178,-337,-351,-363,-352,-345,-358,-343,-358,-358,-347,-334,-347,-344,-342,-391,-391,-386,-389,-354,-348,-429,-424]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 Be7 9. f4 d6 10. Bf3 O-O 11. g4 Nxd4 {B84: Sicilian Scheveningen: 6 Be2 a6, lines without early Be3} 12. Qxd4 Nd7 13. Qf2 $146 ({Predecessor:} 13. a4 b6 14. g5 Bb7 15. f5 Qc5 16. Qxc5 bxc5 17. Bg2 Rfe8 18. Bf4 Rad8 19. Rad1 Nb8 20. h4 Nc6 21. Rd2 Bf8 {½-½ (21) Lau,R (2467)-Schlosser,P (2554) Germany 2006}) 13... b5 {The position is equal.} 14. Nd1 (14. a3 $11) 14... Bb7 $15 15. Ne3 Bc6 16. Re1 Qb7 17. Qg2 Nc5 $36 {[%cal Rc6e4][%mdl 2048] Keeping White busy.} 18. Nf1 f5 19. gxf5 (19. Nd2 $17) 19... exf5 $19 20. Nd2 Bh4 21. Re2 $2 {[#]} (21. Re3 {only move.}) 21... fxe4 $1 22. Nxe4 Rae8 23. Nd2 Rxe2 24. Qxe2 Rxf4 25. Bxc6 Qxc6+ 26. Qg2 Qxg2+ 27. Kxg2 Rf2+ 28. Kg1 Re2 29. Nf3 Bf2+ 30. Kf1 Rxc2 31. Bd2 Ne4 {Precision: White = 29%, Black = 88%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Soto, Christian Camilo"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2102"]
[BlackElo "2601"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,74,19,17,-8,0,-24,12,-27,46,38,50,11,39,-39,0,-9,-5,-56,-69,-39,-35,-83,-37,-91,-36,-34,-54,-45,0,-51,-37,-60,-31,-37,-27,-104,-100,-91,-48,-59,-65,-92,-80,-70,-86,-77,-87,-79,-90,-96,-101,-118,-108,-449,-439,-443,-439,-622,-597,-975,-748,-758,-758]} 1. c4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 a6 5. e3 d6 6. Nge2 {A25: English Opening vs King's Indian with ...Nc6 but without early d3} Ba7 7. d4 h5 {[%cal Bh7h5,Bh5h4][%mdl 32] LiveBook: 13 Games} 8. b4 {The position is equal.} (8. h3 h4 9. g4 f5 10. dxe5 fxg4 11. exd6 gxh3 12. Bxh3 Bxh3 13. Rxh3 {0-1 (40) Gajewski,G (2634)-Ragger,M (2680) Chartres 2017}) 8... exd4 9. exd4 h4 $146 ({Predecessor:} 9... Nxb4 10. d5 a5 11. O-O h4 12. Nd4 {0-1 (33) Carlstedt,J (2460)-Bijlsma,N (2298) Helsingor 2015}) 10. Be3 Nce7 (10... Nxb4 $11 11. Qa4+ Nc6) 11. Qd2 Nf5 12. c5 Nge7 13. a4 (13. Bf4 $1 $14) 13... O-O (13... a5 {is more complex.} 14. Bf4 c6 15. cxd6 Nxd6 16. b5 Kf8) 14. O-O Nxe3 15. fxe3 (15. Qxe3 $11 Nf5 16. Qf4) 15... dxc5 $15 16. bxc5 Bxc5 17. gxh4 Ba7 18. e4 (18. Ng3 $15) 18... Nc6 ({Black should try} 18... c5 $1 $17 {[%cal Rc5d4]} 19. d5 Ng6) 19. Nd5 Bg4 {Hoping for ...Bxe2.} 20. Kh1 Ne7 (20... Bxe2 $5 21. Qxe2 Bxd4 $17) 21. Nxe7+ ({Better is} 21. Ndf4 $11) 21... Qxe7 22. Ng3 Rad8 23. d5 c6 24. Qg5 (24. Qf4 $11 {keeps the balance.} Qd7 25. Nf5 Bxf5 26. Qxf5) 24... Qxg5 $17 25. hxg5 Rfe8 26. Rab1 Bc8 27. h4 Bb8 $36 {[%mdl 2048] Black is really pushing.} 28. Nf5 cxd5 29. exd5 {[#]} Re5 $1 30. Nd4 Ba7 31. Nb3 g6 32. Na5 {[#]} Kg7 $1 {...Rh8 is the strong threat.} 33. Rfd1 $2 {[%mdl 8192]} (33. Rf4 $17 {is a better chance.}) 33... Rh8 $19 {Black is clearly winning.} 34. Rb4 Rxg5 35. Bf3 (35. Rd2 $142) 35... Rg3 36. Rf1 Bh3 37. Kh2 Bb8 {Precision: White = 29%, Black = 60%.} (37... Bxf1 $2 38. Kxg3 b5 39. Nb7 $19) 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Caceres Vasquez, Sergio"]
[Black "Fier, Alexandr"]
[Result "0-1"]
[ECO "A69"]
[WhiteElo "2094"]
[BlackElo "2576"]
[Annotator "TA"]
[PlyCount "174"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,174,-10,55,-11,0,-5,0,0,48,31,22,2,36,-7,12,0,2,0,55,60,87,10,8,12,22,16,0,0,7,6,7,0,0,0,83,73,62,0,0,0,0,0,0,0,0,0,0,0,86,72,97,48,54,31,35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,0,-133,-25,-109,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12847,-12847,-12850,-29978,-29978,-29979,-29979,-29980,-29981,-29981,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29984]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f4 d6 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 Nfd7 (10... dxe5 $11 11. fxe5 Ng4) 11. exd6 {A69: Modern Benoni: Four Pawns Attack with 9...Re8} (11. Ng5 $1 $14) (11. O-O dxe5 12. d6 Nc6 13. Ng5 exf4 14. Nxf7 Bd4+ 15. Qxd4 cxd4 16. Nxd8 Rxd8 17. Nb5 g5 18. h4 h6 {½-½ (54) Fier,A (2603)-Bacrot,E (2704) Le Port Marly 2012}) 11... Nf6 12. O-O Qxd6 13. Ne5 {[%cal Bf3e5,Be5c4,Bc4d6][%mdl 32] The position is equal.} Na6 14. Bf3 Rb8 $146 ({Predecessor:} 14... Nc7 15. a4 Na6 16. Nb5 Qd8 17. Nc4 Ne4 18. Re1 f5 {1-0 (31) Uliashov,D (2274)-Smirnov,I (2022) Ukhta 2009}) 15. Nc4 Qd8 16. Nb5 Ne4 17. Bxe4 Rxe4 18. Ncd6 $1 {[%cal Rd6e4]} Rd4 (18... Rb4 $11) 19. Qf3 $14 {Strongly threatening f5.} Nc7 20. Nxc7 (20. f5 $1 $16 {[%cal Rf5g6]} Nxb5 21. Nxb5 Rxd5 22. fxg6 fxg6 23. Bf4) 20... Qxd6 $11 21. Nb5 Qxd5 22. Nxd4 Qxd4+ 23. Be3 Qxb2 24. Bxc5 b6 25. Bf2 Be6 26. a3 Qxa1 (26... Rc8 $11) 27. Rxa1 $16 Bxa1 28. Qd1 ({White should play} 28. g4 $1 $14) 28... Bf6 $11 29. h3 h5 (29... Rd8 $5 {[%cal Rd8d1]} 30. Qa4 Rd7 $15) 30. Qa4 Rb7 31. f5 gxf5 32. Bd4 b5 33. Qb4 Be7 (33... a5 $11 34. Qd6 Bxd4+ 35. Qxd4 b4) 34. Qe1 $16 {[%mdl 1024] White has strong compensation.} Kf8 35. Qg3 a5 36. Qe3 Ke8 37. Qc3 (37. Qf3 $5 {[%cal Rf3b7]} Rc7 38. Qa8+ Kd7 39. Qxa5 $14) 37... b4 38. Qc6+ Rd7 39. axb4 axb4 40. Qb5 b3 41. Qe5 {And now Qh8+ would win.} Rb7 42. Qh8+ Kd7 43. Qa8 Bd5 {Hoping for ...Bc5!} 44. Qa5 Be4 45. Qd2 Ke6 46. Qf4 (46. Qc1 $11) 46... f6 (46... Ba3 $1 $17 47. Qe5+ Kd7) 47. Qc1 (47. Bb2 $1 $11 {was the only way to keep the balance.}) 47... Kd7 ({Black should try} 47... Kd5 $1 $17 {[%cal Rd5d4]} 48. Qb2 Ba3 $1 {[%mdl 512]} 49. Qxa3 Kxd4 50. Qb2+ Kc4) 48. Bb2 $11 Bd5 49. Qf4 Ke6 50. g4 hxg4 51. hxg4 Bc5+ 52. Kf1 fxg4 53. Qxg4+ Kd6 54. Qf4+ Kc6 55. Qa4+ Kc7 56. Qa5+ Kd6 57. Qd8+ Kc6 58. Qc8+ Kb5 59. Qe8+ Kb4 60. Qe1+ Ka4 {White must now prevent ...Re7.} 61. Qe8+ Kb4 62. Qe1+ Kb5 63. Qe8+ Bc6 64. Qd8 Rd7 65. Qb8+ Bb6 66. Ke2 Ka6 (66... f5 $5 {[%cal Rd7e7]}) 67. Qg8 Re7+ (67... f5 $5 {[%cal Rf5f4]} 68. Qe6 Bb5+ 69. Kf3 Rd2 70. Qc8+ Ka7 $11) 68. Kd2 Rd7+ 69. Ke2 Rd5 (69... f5 $5 {[%cal Rf5f4]} 70. Qe6 Bb5+ 71. Kf3 Rd2 72. Qc8+ Ka7 $11) 70. Bxf6 Bb5+ 71. Kf3 Rd3+ 72. Ke4 Re3+ 73. Kf4 {Threatens to win with Qa8+.} Bc6 {...Rf3+ is the strong threat.} 74. Qc8+ Kb5 75. Qf5+ Ka4 (75... Kb4 $5 {[%cal Re3f3]} 76. Kg5 Re4 $15) 76. Qb1 Rf3+ 77. Ke5 Bc7+ 78. Ke6 Re3+ 79. Kf5 $2 {[%mdl 8192]} (79. Kf7 $11) 79... Be4+ $1 $19 80. Qxe4+ Rxe4 81. Kxe4 {[%mdl 4096] Endgame KB-KB. Black mates.} Ka3 82. Kd3 Ka2 83. Kd2 Bd6 ({Stronger than} 83... b2 84. Bxb2 $1 $11 {[%mdl 512]}) 84. Kd1 Ba3 (84... b2 85. Bxb2 $1 $11 {[%mdl 512]}) 85. Bc3 Bb2 ({Worse is} 85... b2 86. Bxb2 $1 $11 {[%mdl 512]}) 86. Bd2 Be5 87. Bc1 Bf4 {Precision: White = 64%, Black = 63%.} ({Inferior is} 87... b2 {[#]} 88. Bxb2 $1 $11 {[%mdl 512]}) 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Sanchez, Jorge Luis"]
[Black "Ortiz Suarez, Isan Reynaldo"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "2092"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,110,0,0,0,29,0,-11,-67,-66,-67,-54,-56,-52,-67,-66,-86,-45,-64,-64,-64,-68,-44,-59,-97,-55,-47,-54,-56,-41,-26,0,0,26,0,4,8,9,0,31,20,44,38,37,22,14,0,33,4,50,34,47,20,40,32,40,0,0,0,0,0,0,0,0,0,0,0,0,-39,-19,-39,-54,-49,-45,-40,-49,-178,-191,-189,-189,-180,-161,-277,-270,-276,-260,-262,-254,-244,-199,-180,-121,-354,-350,-657,-639,-1026,-1009]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. Qf3 Bb7 9. Bg5 {B87: Sicilian Scheveningen/Najdorf: 6 Bc4, with early ...b5} (9. O-O Nc6 10. Nxc6 Bxc6 11. Re1 Be7 12. Qg3 O-O 13. Bh6 Ne8 14. a3 a5 15. Rad1 Qc7 16. Bg5 Bxg5 17. Qxg5 b4 18. Nb5 Bxb5 19. Qxb5 bxa3 20. bxa3 Nf6 {½-½ (20) Rublevsky,S (2680)-Dominguez Perez,L (2678) Foros 2007}) 9... h6 10. Bxf6 Qxf6 11. Qd3 $146 ({White should try} 11. Qxf6 $11 gxf6 12. O-O) ({Predecessor:} 11. Qe3 Qe5 12. O-O-O Be7 13. f4 Qc5 14. Qh3 Bc8 15. f5 exf5 16. exf5 O-O {1-0 (30) Szakolczai,P (2175)-Varga,C (2186) Hungary 2001}) 11... Nd7 $1 $15 12. O-O-O Nc5 13. Qe3 Be7 14. f3 O-O 15. Kb1 Rac8 16. h4 b4 17. Na4 Nxa4 18. Bxa4 Qe5 19. Nb3 d5 {[%cal Rd5e4]} (19... Bf6 {looks sharper.} 20. Qd4 Qxd4 21. Nxd4 Rfd8 22. Bb3 d5) 20. f4 $1 {[%cal Rf4e5]} Qc7 ({Not} 20... Qxe4 $2 21. Qxe4 dxe4 22. Rd7 $18) 21. Qf2 Rfd8 (21... Bc5 $5 22. Qxc5 Qxc5 23. Nxc5 Rxc5 $15) 22. e5 d4 (22... Bc5 $5 23. Nxc5 Qxc5 $11) 23. Rhe1 Rd5 24. Rd2 Rcd8 25. Red1 a5 26. Nc1 Bc6 27. Bxc6 Qxc6 28. Nd3 a4 29. b3 Ra5 30. g3 Qa6 31. h5 Ra8 32. Qe2 Qc6 33. Nc1 axb3 34. cxb3 Rc5 35. Rxd4 (35. g4 {is more complex.} Rc3 36. Qg2 Qxg2 37. Rxg2 Rd8 38. Nd3) 35... Rc8 {[%cal Rc5c1]} 36. Rc4 Rxc4 37. Qxc4 Qxc4 38. bxc4 Rxc4 $11 {[%mdl 4096] Endgame KRB-KRN} 39. Kb2 f6 40. Rd7 Kf8 41. Rd3 Ke8 42. Rf3 fxe5 43. fxe5 Bg5 44. Nd3 Rc3 45. Ne1 (45. Kb1 $15) 45... Bd2 $1 $19 {[%cal Rd2e1]} 46. Nd3 {[#]} Bc1+ $1 {[%mdl 512]} 47. Kb1 (47. Nxc1 Rxf3) 47... Ba3 $1 48. Re3 (48. g4 {is the only way for White.}) 48... Kd7 $1 {[%cal Rd7c6]} 49. Rf3 {[#]} Kc6 $1 50. Re3 Kb6 51. Rf3 Kb5 52. g4 Kb6 (52... Kc4 $19 53. Nb2+ Kd4 54. Rf4+ Kd5) 53. Re3 $2 {[#]} (53. Rh3 $17) 53... Kc6 $1 {[%cal Rc6b5]} 54. Rf3 $2 (54. Rh3 Kd5 55. Nf4+ Ke4 56. Rxc3 bxc3 57. Ne2 (57. Nxe6 $2 Kd3 $19)) 54... Kb5 55. Re3 {If only White now had time for Rf3....} Kc4 {Precision: White = 37%, Black = 66%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Fuentes Godoy, Lilia Ivonne"]
[Black "Flores, Diego"]
[Result "0-1"]
[ECO "E06"]
[WhiteElo "2088"]
[BlackElo "2567"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,56,28,4,9,-1,45,29,48,13,31,2,37,-6,0,-7,31,-172,-55,-56,-59,-56,-49,-49,-62,-107,-108,-102,-95,-97,-87,-102,-90,-107,-95,-100,-99,-139,-134,-131,-139,-256,-267,-441,-470]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. Qc2 dxc4 7. Qxc4 a6 8. Qc2 Nc6 {[%cal Bb8c6,Bc6b4,Bb4d5,Bd5f6,Bf6e4][%mdl 32] E06: Closed Catalan: Early deviations} (8... c5 9. dxc5 Qa5+ 10. Bd2 Qxc5 11. Qxc5 Bxc5 12. Ne5 Nbd7 13. Nd3 Bd4 14. Bb4 Re8 15. Nd2 Ne5 16. Nxe5 Bxb2 {1-0 (115) Harikrishna,P (2755)-Aravindh,C (2500) Gibraltar 2016}) 9. O-O Nb4 10. Qb3 c5 {White has an edge.} 11. a3 Nbd5 $146 (11... Qd5 $5 {[%cal Rd5b3]} 12. Qd1 Nc6 $11) ({Predecessor:} 11... Nc6 12. dxc5 Bxc5 13. Nc3 h6 14. Rd1 Qe7 15. Na4 Ba7 16. Nb6 {1-0 (33) Postny,E (2619)-Husbands,O (2257) Baku 2016}) 12. Rd1 Qc7 13. Nbd2 cxd4 14. Nxd4 Rd8 (14... Bc5 $5 {[%cal Rc5d4]} 15. Qc4 Nb6 $11) 15. Ne4 $2 {[#]} (15. e4 $1 $14 {stays ahead.} Nf4 16. e5) 15... Nxe4 (15... e5 $19 16. Nc2 Be6) 16. Bxe4 $15 Nf6 17. Bc2 $1 e5 18. Nf3 Be6 19. Qc3 Rxd1+ 20. Bxd1 Qxc3 21. bxc3 Ne4 $36 {[%mdl 2048] Black is on the roll.} 22. Bb2 f6 23. Bc2 {[#]} Nxc3 $1 {[%mdl 512]} 24. Bxc3 {Strongly threatening Be4.} Rc8 25. Bxh7+ Kxh7 26. Bd2 Rc2 27. Rc1 (27. Kf1 $17 {might work better.}) 27... Ra2 $19 28. Rc7 $2 (28. Bb4 Bxb4 29. axb4) 28... Bd6 {Precision: White = 24%, Black = 44%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Okamura, Milton Kasuo"]
[Black "Shabalov, Alexander"]
[Result "0-1"]
[ECO "E33"]
[WhiteElo "2085"]
[BlackElo "2556"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,54,27,27,0,0,0,0,-13,-4,-12,-8,-11,-10,-21,-9,-11,19,-37,-22,-28,0,-8,-4,-14,-3,-28,0,-25,-18,-41,-39,-29,-18,-14,-5,-62,-50,-47,-45,-267,-258,-213,-214,-602,-585]} 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. Nc3 Bb4 5. e3 d6 6. Qc2 e5 {LiveBook: 7 Games. E33: Nimzo-Indian: Classical: 4...Nc6} (6... O-O 7. a3 Bxc3+ 8. Qxc3 a5 9. b3 Re8 10. Bb2 e5 11. dxe5 dxe5 12. Be2 Bf5 13. Nd2 Nd4 14. exd4 exd4 15. Qxd4 Bd3 16. O-O Rxe2 17. Qc3 Rxd2 18. Qxd2 Bxf1 19. Qxd8+ Rxd8 20. Bxf6 gxf6 21. Kxf1 {½-½ (28) Grachev,B (2583)-Grischuk,A (2710) playchess.com INT 2006}) 7. h3 $146 ({Predecessor:} 7. a3 Bxc3+ 8. Qxc3 O-O 9. dxe5 dxe5 10. Nxe5 Nxe5 11. Qxe5 Re8 12. Qc3 Ne4 13. Qc2 Bf5 14. Bd3 Nxf2 15. Bxf5 Nxh1 {0-1 (42) Wozniak,M (2246)-Tsolakidou,S (2355) Khanty-Mansiysk 2016}) 7... O-O 8. Be2 Re8 {The position is equal.} 9. O-O Bxc3 10. Qxc3 Ne4 11. Qc2 Bf5 {Threatens to win with ...Ng3!} 12. Qd1 Qf6 13. d5 Ne7 14. Bd2 (14. Nd2 $11) 14... c6 15. dxc6 bxc6 16. Bb4 a5 17. Ba3 a4 18. Nd2 Nc5 19. Nf3 (19. b4 $5 {[%cal Rb4c5]} axb3 20. axb3 $11) 19... Ng6 20. Rc1 h6 21. Qd2 Ne4 22. Qd1 $1 Red8 23. Qe1 (23. Bd3 $11) 23... d5 24. cxd5 cxd5 25. Qd1 $2 {[#]} ({White should play} 25. Rc7 $15) 25... d4 $1 $19 {[%cal Rd4e3]} 26. exd4 Nf4 27. Nxe5 $2 {[#]} (27. Rc7 Qb6 28. Re7) 27... Rxd4 $3 {[%mdl 512] Precision: White = 33%, Black = 50%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Alvarez, Alvaro"]
[Black "Erenburg, Sergey"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2077"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,126,-12,-8,0,0,0,0,21,17,16,-26,0,0,24,0,22,-16,0,0,0,-8,0,0,0,0,0,-3,0,-46,24,0,0,0,0,0,0,7,0,6,21,-4,-7,0,0,0,0,0,43,-117,0,-47,-1,-52,-59,-53,-59,-54,-51,-52,-47,-77,-52,-68,-27,-107,-91,-112,-114,-114,-125,-128,-114,-115,-7,-21,0,0,0,0,5,0,24,0,0,0,0,-144,-127,-143,-133,-160,0,0,-4,-5,-19,-19,-14,-34,-27,-34,-39,-956,-949,-2191,-2075,-1176,-1021,-883,-877,-1508,-1253,-29982,-29983,-29992,-29993,-29997,-29998]} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. e3 a6 5. c5 (5. b3 c5 6. Bb2 Nc6 7. Nbd2 cxd4 8. exd4 g6 9. Bd3 Bg7 10. O-O O-O 11. Rc1 dxc4 12. bxc4 b5 {½-½ (48) Bu,X (2711)-Sethuraman,S (2629) Liaocheng 2017}) 5... b6 6. cxb6 $1 {LiveBook: 3 Games. D30: Queen's Gambit Declined: Systems without Nc3} c5 7. Bd3 Qxb6 $146 ({Predecessor:} 7... Nc6 8. O-O cxd4 9. Nxd4 Nxd4 10. Qa4+ Qd7 11. Qxd4 Bd6 12. a4 e5 {1-0 (33) Stobik,D (2245)-Zeller,F Zell 1991}) 8. O-O {The position is equal.} cxd4 9. exd4 Bd6 10. Qc2 Nbd7 11. Nc3 Bb7 12. Re1 h6 13. Kh1 (13. Na4 $5 {[%cal Ra4b6]} Qa7 14. Be3 $11) 13... Rc8 14. Qe2 O-O 15. Be3 Ng4 16. Bd2 Rfe8 17. h3 Ngf6 18. Be3 Ne4 19. Ne5 Ndf6 (19... Bxe5 $15 20. dxe5 Qb4) 20. Bxe4 dxe4 21. Nc4 Qd8 (21... Qc6 {keeps more tension.} 22. Nxd6 Qxd6 23. Na4 a5 24. Nc5 Bc6) 22. Nxd6 Qxd6 23. Na4 Nd5 (23... e5 $5 {[%cal Re5d4]} 24. Nb6 exd4 25. Nxc8 Rxc8 $11) 24. Nc5 Qb6 25. a3 (25. b4 $5) 25... a5 26. Rac1 f5 27. Rc2 Ba8 28. Rec1 Qd8 29. Qd2 $2 (29. Bd2 $14 {stays ahead.}) 29... Rc6 (29... Qh4 $1 $17 {...f4 is the strong threat.} 30. Qd1 (30. Qxa5 f4 $17) 30... f4) 30. Qe1 Qh4 (30... f4 $5 31. Bd2 $8 e3 32. Bxa5 (32. fxe3 fxe3 33. Bxa5 Qg5 $11) 32... Qf6 $14) 31. f3 (31. Qxa5 $2 f4 $17) (31. Kh2 $11) 31... Qxe1+ $15 32. Rxe1 exf3 33. gxf3 Nxe3 34. Rxe3 Rd6 35. Rc4 f4 $36 {[%mdl 2048] Black has some pressure.} 36. Rd3 Red8 37. Ne4 (37. Kg2 $11 {remains equal.}) 37... Rb6 $1 $17 38. Rd2 Rdb8 39. Rcc2 Rb3 40. Kg2 Re3 41. Rc3 Re1 (41... Rxc3 $17 42. Nxc3 g5) 42. Nc5 $11 g5 43. Nd7 Rd8 44. Rc7 Kf7 (44... Re3 $5 {[%cal Ra8f3]}) 45. Ne5+ Ke8 (45... Kf8 $5 {[%cal Re1e5]} 46. Ng4 Bd5 $11) 46. Rh7 {Black must now prevent Rc2.} Rxe5 $1 47. Rh8+ Ke7 48. Rxd8 (48. Rh7+ $1 $11 Kf8 49. Rh8+ Ke7 50. Rh7+ (50. Rxd8 Bxf3+ 51. Kf2 Re3 $11) 50... Kf8 51. Rh8+ Ke7) 48... Bxf3+ $1 {[%mdl 4096] Endgame KRR-KRB} 49. Kf2 Re3 50. Rc8 {[#]} Bd5 $2 ({Black should try} 50... h5 $1 $17 51. Kf1 g4) 51. Rc3 Rxc3 52. bxc3 {KR-KB} h5 53. Kg1 $1 Kf6 54. Rc2 Bc4 {[%mdl 1024] Black has compensation.} 55. Rb2 $1 g4 {[%cal Bg5g4,Bg4g3][%mdl 32]} 56. Rb8 $2 {[%mdl 8192] [#]} (56. hxg4 $15 hxg4 57. Rb8) 56... g3 $1 $19 57. Rf8+ Kg5 58. Rg8+ Kf5 59. h4 Ke4 60. Rg5 Kf3 61. Rg7 Ke2 {Black mates.} 62. Kg2 Bd5+ 63. Kh3 Kf2 {Precision: White = 48%, Black = 53%.} 0-1

[Event "XII Americas Continental-ch 2017"]
[Site "Medellin"]
[Date "2017.06.11"]
[Round "1"]
[White "Soto, Miguel Angel"]
[Black "Mekhitarian, Krikor Sevag"]
[Result "0-1"]
[ECO "C88"]
[WhiteElo "2072"]
[BlackElo "2542"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "COL"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,119,30,21,31,7,11,18,53,-7,15,-51,-27,-35,-30,-68,-66,-71,-72,-91,-77,-81,-67,-64,-78,-98,-94,-108,-89,-103,-95,-92,-113,-143,-69,-78,-59,-61,-59,-59,-54,-62,-32,-152,-106,-152,-150,-152,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-79,-95,0,-79,-79,-79,-79,-79,-79,-79,-79,-95,-79,-148,0,-109,-79,-92,-93,-284]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. O-O Bb7 8. c3 O-O 9. Re1 Re8 10. Nbd2 Bf8 {C88: Closed Ruy Lopez: Anti-Marshall Systems} 11. Nf1 Na5 12. Bc2 c5 {The position is equal.} (12... d5 13. exd5 Qxd5 14. Bg5 Qd6 15. Ng3 c5 16. Qe2 Nc6 17. a4 Rab8 18. axb5 axb5 {0-1 (58) Timofeev,A (2670)-Tomashevsky,E (2646) Moscow 2008}) 13. Ng3 (13. Bg5 $14) 13... d5 14. b3 $146 (14. exd5 $11 Qxd5 15. Bg5) ({Predecessor:} 14. exd5 Qxd5 15. Bg5 Qd6 16. Ne4 Nxe4 17. dxe4 f6 18. Qxd6 Bxd6 {½-½ (51) Garcia Martinez,S (2425)-Diaz,J (2430) Santa Clara 1991}) 14... h6 {[%cal Bh7h6,Bh6h5,Bh5h4][%mdl 32]} 15. Bb2 d4 16. c4 Nc6 17. Rf1 g6 18. Nd2 Bc8 19. h3 h5 20. Ne2 h4 21. f4 Nh5 22. f5 Bh6 23. Bc1 Be3+ 24. Kh1 Ra7 25. Qe1 g5 (25... Bf4 $17 26. fxg6 fxg6) 26. Nf3 $15 {[%cal Bd2f3,Bf3h2,Bh2g4][%mdl 32]} f6 (26... Bf4 $5) 27. Ba3 Qb6 28. Nh2 a5 29. Ng4 Bf4 30. Rb1 (30. cxb5 $15 Nb4 31. Qd1 (31. Nxf4 $2 Ng3+ 32. Kg1 exf4 $17)) 30... Kg7 31. Kg1 Nb4 32. Bxb4 cxb4 ({Black should play} 32... axb4 33. Ra1 Bd7) 33. Nxf4 $17 Nxf4 34. Qd2 Bd7 35. Kh2 Rc8 36. Rb2 Be8 37. Rc1 Rb7 38. Bd1 Rbc7 39. Nf2 Rc5 40. Rbc2 Qc7 41. Kh1 Qa7 42. Kh2 R5c7 43. Kh1 Rb8 44. Rb2 Rcb7 45. Rcb1 Bc6 46. Bc2 Qa6 47. Kh2 Be8 48. Bd1 Qc6 49. Kh1 Rb6 50. Bc2 Bh5 51. Bd1 Be8 52. Bc2 $1 Kf8 53. Kh2 Bd7 54. Ng4 Ke7 55. Bd1 Qc5 56. Bc2 Be8 57. Kh1 ({White should try} 57. Bd1) 57... Bd7 58. Kh2 $1 Nh5 59. Qd1 Ng7 60. a4 $2 {Precision: White = 54%, Black = 55%.} (60. Qe1 $17) 0-1

