[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Cordova, Emilio"]
[Black "Lopez Rueda, Juan Pablo"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2645"]
[BlackElo "2001"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 7,59,-6,33,16,50,42,59,52,55,52,54,60,106,91,116,96,96,99,134,108,136,135,118,116,138,120,139,118,139,152,145,150,279,291,292,282,293,287,288,284,322,324,346,302,413,405,395,341,441,448,431,427,433,428]} 1. e4 c5 2. Bc4 Nc6 3. Nf3 e6 4. O-O a6 5. Re1 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} (5. c3 Nf6 6. e5 d5 7. Bb3 Nd7 8. d4 Be7 9. Re1 b5 10. Nbd2 Nb6 11. Nf1 cxd4 12. Nxd4 Nxd4 13. Qxd4 {1-0 (22) Ranola,Y (2373)-Kotanjian,T (2479) Olongapo City 2015}) 5... d6 6. c3 Nf6 7. d4 {White is slightly better.} b5 8. Bf1 Be7 $146 (8... cxd4 9. cxd4 Be7 10. a4 b4 11. Nbd2 O-O 12. b3 d5 {1-0 (35) Mandita,H (1912)-Terbe,J (2187) Arad 2016}) 9. a4 Rb8 10. axb5 axb5 11. dxc5 dxc5 {[#]} 12. Qxd8+ $1 Nxd8 13. Bf4 Rb7 14. Ra5 $36 {[%mdl 2048] White is on the roll.} Bd7 15. Ne5 c4 16. Nxd7 Nxd7 {[#]} 17. Na3 $1 e5 18. Be3 (18. Nxb5 exf4 19. Bxc4 O-O $17) 18... Bxa3 19. bxa3 O-O (19... Ke7 $16 {was called for.} 20. Rb1 Nc6 21. Raxb5 Rxb5 22. Rxb5 Ra8) 20. Rb1 $18 Nc6 21. Raxb5 Rxb5 22. Rxb5 Ra8 23. Rb7 ({Don't play} 23. Bxc4 $6 Rxa3 24. Rb7 Ra1+ 25. Bf1 Nf8 $18) 23... Nf6 24. f3 h6 25. Bc5 Ra5 26. Bb4 ({And not} 26. Bxc4 Rxc5 27. Bxf7+ Kf8 $15) 26... Nxb4 27. axb4 ({Not} 27. Rxb4 Rxa3 28. Rb8+ (28. Rxc4 Kf8 29. Rc8+ Ke7 $16) (28. Bxc4 Nd7 $16) 28... Kh7 $16) 27... Ra3 28. Bxc4 {White is clearly winning.} Rxc3 29. Bxf7+ Kf8 30. Bg6 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Wences Tototzin, Ivan"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2517"]
[BlackElo "2000"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,61,14,18,58,54,52,49,58,56,160,169,169,163,158,133,127,113,140,145,143,141,141,143,150,150,189,168,189,175,156,152,155,136,156,159,162,168,177,132,182,182,186,182,379,382,482,379]} 1. Nf3 d5 2. c4 c6 3. Qc2 Nf6 4. g3 e6 5. Bg2 Nbd7 6. O-O Bd6 7. d4 O-O 8. Nbd2 Re8 9. Rd1 b6 {E01: Catalan: Early deviations} (9... Qe7 10. e4 Nxe4 11. Nxe4 dxe4 12. Qxe4 e5 13. Bg5 Qf8 14. dxe5 Nxe5 15. Nxe5 Rxe5 16. Qd4 Rxg5 17. Qxd6 Qxd6 18. Rxd6 Be6 19. Rc1 Rc5 20. b3 Kf8 21. f4 {½-½ (48) Dubov,D (2660)-Smirnov,P (2595) Khanty-Mansiysk 2016}) 10. e4 dxe4 11. Nxe4 Nxe4 {White is slightly better.} 12. Qxe4 Qc7 ({Black should try} 12... Bb7 $14) 13. Ng5 $16 Nf6 14. Qxc6 Rb8 15. Qxc7 $146 (15. c5 bxc5 16. dxc5 Be5 17. f4 {½-½ (57) Goni Navarro,P (2008)-Arjol Lopez,D (1878) Zaragoza 2015}) 15... Bxc7 16. b3 Bb7 17. a4 Bxg2 18. Kxg2 h6 19. Nf3 Red8 20. Bb2 Bd6 21. d5 Ne4 22. dxe6 fxe6 23. Re1 Nc5 24. Re3 a5 25. Nd4 {Threatens to win with Nc6.} Re8 26. Nb5 Rbd8 27. Rae1 Kf7 28. Bd4 Re7 29. h4 g6 $2 {[#]} (29... Red7 30. Rf3+ Kg8 31. Nxd6 Rxd6) 30. Rf3+ $18 ({Not} 30. Nxd6+ Rxd6 31. Rf3+ Kg8 $18) 30... Ke8 31. Bf6 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Torres Belman, Noe Isai"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2477"]
[BlackElo "1982"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 6,51,50,21,35,45,39,36,81,94,95,96,137,140,185,158,172,181,176,176,177,171,186,173,201,218,206,223,241,167,158,181,465,466,879,879,866,863,1095,1094,1072,1056,992,930,1165,1408,29970,29978]} 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. g3 b6 {E10: Blumenfeld Gambit} (4... Bb4+ 5. Bd2 Qe7 6. Nc3 O-O 7. Bg2 d6 8. O-O a5 9. Rc1 Bxc3 10. Bxc3 e5 11. d5 Nb8 12. c5 Nbd7 13. cxd6 cxd6 14. Nd2 b5 15. b3 Nb6 16. e4 b4 17. Bb2 Ba6 18. Re1 {½-½ (32) Riazantsev,A (2671)-Bologan,V (2640) Doha 2016}) 5. Bg2 Bb4+ 6. Bd2 Qe7 {White is slightly better.} 7. O-O Bb7 8. Bc1 d5 $146 {[#]} (8... Bd6 9. Nc3 O-O 10. e4 e5 11. d5 Na5 12. Nh4 g6 13. Bg5 Rfc8 14. b3 Kg7 {1-0 (22) Amann,H (2195)-Mehaux,H (2076) GER email 2013}) 9. c5 $1 {[%mdl 512]} bxc5 10. a3 Ba5 {[#]} 11. dxc5 $1 Qxc5 12. b4 Nxb4 13. axb4 Bxb4 14. Ne5 {Qa4+ is the strong threat.} Qb6 15. Qa4+ Ke7 16. Na3 a5 17. e4 ({Don't do} 17. Bg5 $6 Rhd8 18. Rfd1 Kf8) 17... Rhd8 18. exd5 Nxd5 $2 (18... exd5 19. Be3 c5) 19. Nac4 $18 Qc5 (19... Qa6 $142 20. Ba3 Bd6) 20. Be3 Nxe3 21. fxe3 {[%csl Ge5][%cal Rf1f7]} ({Less strong is} 21. Bxb7 Nxc4 22. Nc6+ Kf8 $16) 21... f6 22. Bxb7 fxe5 23. Bxa8 Rxa8 24. Qc2 g6 25. Qe4 Rd8 26. Qh4+ 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Fernandez Cardoso, Alexey"]
[Black "Beltran Medina, Jorge"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2445"]
[BlackElo "1978"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,41,20,35,37,31,26,41,37,36,12,14,9,11,20,17,6,43,40,121,131,132,101,314,202,29984,29985,29998,29999]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. Ngf3 Nc6 7. Nb3 cxd4 8. Nbxd4 Bc5 9. c3 {[%cal Bc2c3,Bc3d4][%mdl 32] C05: French Tarrasch: 3...Nf6 4 e5 Nfd7, 5 f4 and 5 Bd3 sidelines} Qb6 10. a3 Ndb8 $146 (10... a5 11. Bd3 Nxd4 12. cxd4 Bxd4 13. Qa4 Bf2+ 14. Kf1 Ke7 15. Qc2 Be3 16. Ke2 Bc5 {1-0 (37) Fernandez Cardoso,A (2431)-Jaquez,J (2256) Havana 2017}) 11. b4 {White is slightly better.} (11. Bd3 $5 {looks sharper.} Bd7 12. Nc2 a5 13. Qe2 a4 14. Rb1) 11... Nxd4 12. cxd4 Be7 13. Bd3 Bd7 14. O-O Bb5 15. f5 Bxd3 16. Qxd3 O-O {[#]} (16... exf5 $14 17. Qxf5 O-O) 17. f6 $1 $16 {[%cal Rf6e7]} gxf6 18. Bh6 $40 {[%mdl 128] White goes for the king.} Nc6 $2 (18... Nd7 $16) 19. Kh1 {aiming for b5.} ({Weaker is} 19. Bxf8 Rxf8 20. Kh1 a6 $16) 19... Rfe8 $2 (19... fxe5 $18 20. Nxe5 (20. Bxf8 e4 21. Qd1 Rxf8 $15) 20... Nxe5 21. dxe5 Kh8 22. Bxf8 Rxf8) 20. Ng5 fxg5 {[#]} 21. Rxf7 $1 {[%mdl 512]} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Cervantes Bello, Gabriel"]
[Black "Gonzalez Vidal, Yuri"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2000"]
[BlackElo "2534"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.04.17"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,60,46,37,27,34,25,3,4,0,18,26,53,-29,-30,-29,-29,-29,-29,-29,-29,-29,-39,-40,-4,-89,-82,-104,-64,-77,-46,-70,-37,-354,-362,-347,-342,-1077,-1048,-1047,-1007]} 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ c6 6. Qxc4 b5 7. Qc2 Bb7 8. d4 Nbd7 9. O-O Be7 10. Rd1 Rc8 11. Ne5 O-O 12. Nc3 {LiveBook: 4 Games. D30: Queen's Gambit Declined: Systems without Nc3} Nxe5 $146 (12... a6 13. Bg5 h6 14. Bxf6 Nxf6 15. Ne4 Nxe4 16. Bxe4 {1-0 (34) Arsovic,Z (2425)-Abramovic,B (2429) Kragujevac 2013}) 13. dxe5 Nd5 14. Ne4 {White has an edge.} c5 15. Bf4 h6 16. Qd2 Qc7 {Black wants to play ...g5.} 17. Nf6+ ({White should play} 17. Nd6 $14) 17... Bxf6 $11 18. exf6 Nxf4 19. fxg7 Rfd8 20. Qxf4 Qxf4 21. gxf4 Bxg2 22. Kxg2 Kxg7 {[%mdl 4096] Endgame KRR-KRR} 23. e4 (23. Rxd8 $11 Rxd8 24. a4) 23... c4 $17 {[%cal Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 24. Kf3 Kf6 25. Ke3 a6 26. f3 Rxd1 27. e5+ $2 {[%mdl 8192] [#]} ({Only move:} 27. Rxd1 $15 a5 28. Rc1) 27... Kf5 $19 28. Rxd1 c3 29. b3 $2 (29. Rb1) 29... c2 30. Rc1 b4 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Alarcon Morales, Elvira"]
[Black "Hernandez Guerrero, Gilberto"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1996"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,58,-19,-26,-25,-27,-27,-22,-18,-18,-89,-81,-147,-136,-161,-172,-179,-168,-293,-300,-388,-370,-481,-485,-472,-456,-456,-415,-598,-593,-760,-751,-1781,-1587,-1936,-1822,-29991,-29992]} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nc3 Nxc3 7. bxc3 Qc7 8. Bd2 d6 9. Nf3 Nd7 10. exd6 Bxd6 11. Bd3 b6 12. Qe2 Bb7 13. h3 {B22: Sicilian: 2 c3} O-O 14. O-O Rac8 15. a4 {The position is equal.} Bf4 {Black wants to play ...Bxf3.} 16. Be1 $146 (16. Bc1 $11 {keeps the balance.}) (16. Rfc1 Bxf3 17. gxf3 Nf6 18. Bxf4 Qxf4 19. Qe3 Qh4 20. Bf1 Nd5 21. Qd2 Rfd8 22. c4 Nf4 23. Kh2 Rc5 24. Re1 Nxh3 {0-1 (24) Siclovan,C (1955)-Jianu,V (2544) Eforie Nord 2009}) 16... e5 $17 {[%cal Be6e5,Be5e4][%mdl 32]} 17. Bf5 {[#]} (17. Bb5 $142) 17... e4 $1 {[%mdl 512]} 18. Ne5 (18. Bxe4 Rfe8) 18... Nxe5 19. dxe5 {[#]} Rce8 $1 ({Don't do} 19... Bxe5 20. Bxc8 Rxc8 21. Bd2 $15) 20. e6 (20. Bxe4 $142 Rxe5 21. f3) 20... g6 $19 ({Less strong is} 20... fxe6 21. Bxe4 Qe5 22. Bd3 $17) 21. Qg4 Kh8 ({Don't take} 21... Ba6 22. exf7+ Rxf7 23. Be6 $19) 22. exf7 Rxf7 23. Be6 Rf6 {[%cal Bf7f6,Bf6d6,Bd6d4][%mdl 32]} 24. Bb3 e3 {Threatens to win with ...e2.} 25. Ra2 (25. Kh1 {might work better.} e2 26. Rg1) 25... h5 26. Qd1 Rd6 (26... Bh2+ $2 27. Kh1 $19) 27. Qc1 exf2+ 28. Bxf2 Bxc1 29. Bd4+ {[#]} Rxd4 $1 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Martinez Rodriguez, Miguel"]
[Black "Ruiz Sanchez, Orlen"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1979"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,68,-3,-22,0,-8,-6,-20,-10,-33,-11,-14,0,-14,14,10,24,4,52,35,53,64,64,34,58,-8,-8,-12,0,-1,14,21,31,26,32,25,33,44,259,31,185,-575,-552,-500,-463,-467,-349,-435,-429,-460,-456,-803,-829,-813,-800,-29990,-4982]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6 6. Bxd7+ Bxd7 7. d4 cxd4 8. Nxd4 {LiveBook: 5 Games} e6 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} (8... g6 9. c4 Bg7 10. Nc3 O-O 11. b3 Qa5 12. Bb2 e6 13. a4 Rfd8 14. Rc1 Rac8 15. Ba3 Be8 16. h3 {½-½ (41) Mammadova,G (2323)-Kashlinskaya,A (2423) Loo 2014}) 9. Nc3 Be7 10. Bg5 O-O {The position is equal.} 11. Qf3 Qb6 $146 (11... h6 12. Bh4 Qc7 13. a4 Rac8 14. Rad1 Qc4 15. a5 {0-1 (47) Tirman,B-Esengin,E Kocaeli 2002}) 12. Rad1 Rac8 13. Nb3 Qc7 14. Qg3 Rfd8 15. Rd3 b5 16. Rf3 $1 {[%cal Rf3f6] [#] aiming for Rxf6.} (16. Bxf6 Bxf6 17. Qxd6 (17. Rxd6 Bh4 18. Qf4 Be7 $17) 17... Qxd6 18. Rxd6 b4 $15) 16... Kf8 17. Qh4 {[%cal Rf3f6]} b4 18. e5 $1 $40 {[%cal Re5f6][%mdl 128] White is up to no good.} dxe5 19. Bxf6 (19. Ne4 $14 Bc6 20. Nxf6 (20. Bxf6 Bxf6 21. Nxf6 Bxf3 22. Nxh7+ Kg8 $11) 20... Bxf3 21. Nxh7+ Ke8 22. gxf3) 19... Bxf6 $11 20. Qxb4+ Be7 21. Qe4 f5 {And now ...Bc6 would win.} (21... Kg8 $5 {creates asymmetry.} 22. Qxe5 Bd6 23. Qh5 Bc6 24. Rd3 g6) 22. Qxe5 Bd6 23. Qe2 (23. Qd4 $2 Bxh2+ 24. Kh1 Bc6 $19) 23... Bxh2+ 24. Kh1 {Hoping for Rh3.} Bf4 25. Qxa6 Bc6 $2 (25... Re8 $14) 26. Rd3 $2 (26. Nc5 $18 Re8 {[#]} 27. Rxf4 $1 {[%mdl 512]} (27. Nxe6+ Rxe6 28. Rxe6 Bxf3 $16) 27... Qxf4 28. Nxe6+ Rxe6 29. Qxc8+ Re8 30. Rxe8+ Bxe8 31. Qc5+ Kf7 32. Ne2) 26... Qe7 $2 (26... Rxd3 $14 27. Qxd3 (27. cxd3 Bd7 $14) 27... Qf7) 27. Red1 $4 {[%mdl 8192]} (27. Rxd8+ $18 {and all is fine.} Qxd8 28. Kg1 (28. Rxe6 Qh4+ 29. Kg1 Qh2+ 30. Kf1 Bxg2+ 31. Ke2 Qh5+ 32. Kd3 Qf3+ 33. Re3 Bf1+ 34. Kd4 Bxe3+ 35. fxe3 Bxa6 36. e4 Qf4 37. a4 Rc4+ 38. Kd5 Ke7 39. exf5 Qxf5#)) 27... Qh4+ $19 28. Kg1 {Black must now prevent Rxd8+.} Qh2+ 29. Kf1 Qxg2+ 30. Ke2 Re8 ({Not} 30... Qg4+ 31. Ke1 Bd5 32. Nd4 $17) 31. Nd4 Bd5 32. Rf1 (32. Nf3 $142) 32... Bc4 33. Qa3+ Kg8 34. Ncb5 Bxb5 (34... e5 $142 35. Ne6 e4 36. Qf8+ Rxf8 37. Nxf4 exd3+ 38. Kd2 Qxf1 39. Ke3 Bxb5 40. c4 Rxc4 41. a3 Re8+ 42. Kf3 Qg1 43. Ng2 Bc6+ 44. Kg3 Qxg2#) 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.11"]
[Round "1"]
[White "Casillas Pellat, Jose de Jesus"]
[Black "Otero Acosta, Diasmany"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1977"]
[BlackElo "2438"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,66,13,-20,-18,-25,-40,-69,12,21,37,18,21,-9,43,-13,-7,-20,-20,-39,-33,-38,-32,-38,-37,-225,-224,-237,-242,-305,-300,-336,-277,-296,-270,-384,-324,-499,-495,-539,-553,-768,-883,-844,-849,-1772,-1643,-1801,-1745,-2343,-1499,-29994,-29995,-29995,-29996,-29996,-29974,-29974,-29975]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 Nf6 5. e5 Nd5 6. Nxd4 {LiveBook: 3 Games} Qc7 {B22: Sicilian: 2 c3} 7. f4 (7. Qe2 Nc6 8. Nxc6 bxc6 9. Nd2 Be7 10. h4 f6 11. exf6 Bxf6 12. Ne4 O-O 13. Bg5 Bxg5 14. hxg5 {0-1 (22) Yap,K (2246)-Adianto,U (2583) Cebu 2007}) 7... a6 8. Bd3 b5 (8... d6 $15) 9. a4 $146 (9. O-O d6 10. Qe2 Nd7 11. f5 Nxe5 12. fxe6 fxe6 13. Be4 Be7 14. Qh5+ {1-0 (30) Yurtseven,M (1833)-Arig,B (1740) Akhisar Manisa 2009}) 9... bxa4 10. Rxa4 Bb7 11. Qe2 Bc5 (11... Nc6 $11) 12. O-O ({White should try} 12. Nb3 $14 Bb6 13. Na3) 12... Nc6 13. Nd2 Ndb4 14. Bb1 Nxd4 15. cxd4 Bxd4+ 16. Kh1 a5 $36 {[%mdl 2048] White is under pressure.} 17. Ne4 $2 (17. Nc4 $15) 17... Ba6 $19 18. Qf3 {White wants to play Nd6+.} Bxf1 19. Qxf1 O-O 20. Bd2 f5 21. exf6 Bxf6 22. Qf3 (22. Nxf6+ $142 Rxf6 23. h3) 22... Rac8 {[#] ( -> ...Qc1+!)} 23. h4 (23. Nxf6+ {might work better.} Rxf6 24. g3) 23... Bxb2 {aiming for ...Bc1.} ({Resist} 23... Bxh4 24. Ra3 g6 25. Rc3 $19) 24. Ng5 h6 {[%cal Bh7h6,Bh6g5][%mdl 32]} 25. Qe4 {[%csl Gb1,Gg5][%cal Re4h7]} hxg5 26. Qh7+ Kf7 {[#] Hoping for ...Rh8.} 27. Bg6+ Ke7 28. Rxb4 axb4 29. Qh5 Qc5 {Threatens to win with ...Bc3.} 30. fxg5 Rf1+ {Black mates.} 31. Kh2 Be5+ 32. Kh3 Qc3+ 33. Bxc3 Rxc3+ 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.12"]
[Round "2"]
[White "Obregon Rivero, Juan Carlos"]
[Black "Bustamante Orta, Jorge"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2529"]
[BlackElo "2160"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,73,0,0,41,27,40,34,53,44,58,34,31,40,31,44,36,22,59,19,68,68,109,109,119,114,129,127,191,164,158,163,154,139,143,140,146,147,181,172,170,172,164,163,235,233,238,239,1447,1542,5206,5081]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. O-O O-O 12. Bg5 Bd7 13. Bh4 Qe8 {C06: French Tarrasch: 3...Nf6 4 e5 Nfd7 5 Bd3 main lines} (13... Qc7 14. Bg3 Rae8 15. Rc1 Bxg3 16. hxg3 Qb6 17. Qb3 Qxb3 18. axb3 Nb4 19. Bb1 Rc8 20. Nc3 Ng4 21. Rfe1 Rc6 22. Re2 {½-½ (31) Meribanov,V (2426)-Arun Prasad,S (2514) Moscow 2013}) 14. Bg3 Bxg3 15. Nxg3 Qb8 $146 {White is slightly better.} (15... Qe7 16. Re1 g6 17. Ne5 Nxe5 18. dxe5 Ne8 19. Qg4 Qf7 20. Re2 Rc8 {0-1 (39) Egedi,I (2315)-Barva,A (2376) Hungary 2006}) 16. Re1 Qf4 17. Bb5 Ne4 18. Qc1 a6 {[#] Hoping for ...Qxc1.} 19. Bxc6 Bxc6 20. Qe3 h6 21. Rac1 Rac8 22. Nxe4 dxe4 23. Qxf4 Rxf4 24. Ne5 Rd8 25. g3 Rf3 (25... Rf5 $16) 26. Nxc6 bxc6 27. Rxe4 $18 {[%mdl 4096] Endgame KRR-KRR} Rd6 28. Kf1 Rf5 29. Ke2 Rb5 30. b3 a5 31. Rc4 g5 32. Re5 Kf7 33. Ke3 Rdd5 (33... Rbd5 {is a better defense.} 34. Rxd5 exd5) 34. Rxd5 ({Don't do} 34. Rxc6 $6 Rxe5+ 35. dxe5 Rxe5+ 36. Kf3 Rd5 $16) 34... cxd5 35. Rc5 Rxc5 $2 {[#]} (35... Rb8 36. Rxa5 Kf6) 36. dxc5 e5 37. f4 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.12"]
[Round "2"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Fonseca Manrique, Enrique"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2499"]
[BlackElo "2160"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,68,31,51,64,87,81,112,113,122,118,122,103,109,106,140,120,287,209,231,219,205,204,365,341,353,170,168,167,390,379,303,278,393,399,371,286,372,375,322,335,299,262,29986,29987,29986,29987,29987,29988,29989,1186,1467,1458,1366,1360,5385,5381,2023]} 1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. g3 Nc6 7. Bg2 Bc5 8. Nb3 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} Ba7 (8... Be7 9. Be3 Nf6 10. f4 d6 11. O-O O-O 12. a4 b6 13. g4 Nd7 14. g5 Re8 15. Rf3 Bb7 {1-0 (30) Ehlvest,J (2597)-Kryvoruchko,Y (2679) Fujairah 2012}) 9. Bf4 Ne5 10. Bxe5 $146 {White is better.} (10. Qd2 d6 11. O-O-O Bb8 12. Bxe5 dxe5 13. f4 Ne7 14. Rhf1 O-O 15. Kb1 Ba7 {½-½ (32) Shapoval,G (2216)-Borisova,E (2305) Kharkov 2008}) 10... Qxe5 11. f4 Qc7 {[#]} 12. Qg4 $1 {[%cal Rg4g7]} g6 13. O-O-O Ne7 14. Qg5 {Qf6 is the strong threat.} f5 $2 (14... d6 $16) 15. Rhe1 Kf7 16. Kb1 h6 17. Qh4 $40 {[%mdl 128] White has strong attack.} Rb8 $2 (17... Qd8 18. Nd4 (18. e5 Nc6 $16) 18... Qe8) 18. g4 $18 (18. e5 Rh7 19. a4 Kg8 $16) 18... Qxf4 {aiming for ...h5.} 19. Rf1 (19. exf5 $142 Nxf5 20. Qh3 (20. Rf1 Nxh4 21. Rxf4+ Ke7 $17)) 19... Qg5 20. Qg3 Ke8 $2 (20... h5 {was worth a try.}) 21. exf5 gxf5 22. Qc7 {Hoping for gxf5.} Qxg4 (22... Rf8 $142 23. Na5 (23. Nc5 Bxc5 24. Qxb8 Qxg4 $16) 23... Kf7 24. gxf5 Nxf5) 23. Bf3 Qh4 24. Na5 Rf8 25. Nc4 {[%cal Rc4d6]} (25. Nxb7 Bxb7 26. Bxb7 Rd8 $14) 25... Kf7 26. Ne5+ Kg7 {[#]} 27. Rg1+ $1 {[%mdl 512]} ({Don't take} 27. Nxd7 Bxd7 28. Rxd7 Rbe8 $18) 27... Kf6 $2 {[#]} (27... Kh8 $18) (27... Bxg1 28. Rxg1+) 28. Nd5+ $1 {[%mdl 512]} Nxd5 (28... exd5 29. Qd6#) 29. Rg6+ Ke7 30. Bxd5 exd5 31. Nf3 (31. Qd6+ $142 Ke8 32. Nxd7 Bc5 33. Qxb8 Bd6 34. Qxd6 Rf6 35. Rxf6 Qxf6 36. Re1+ Qe6 37. Rxe6+ Kf7 38. Re7+ Kg8 39. Qg6+ Kh8 40. Qh7#) 31... Qf2 {White is clearly winning.} 32. Qd6+ Ke8 33. Re1+ Be3 34. Qe5+ ({Weaker is} 34. Qxd5 Kd8 $16) 34... Kd8 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.12"]
[Round "2"]
[White "Ruiz Sanchez, Orlen"]
[Black "Perez Avendano, Paul Omar"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2455"]
[BlackElo "2156"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,27,25,24,19,32,29,32,0,21,10,6,-11,0,-2,0,-38,0,0,0,-30,3,9,30,28,25,30,19,-54,-52,-65,-16,-22,0,-7,0,0,0,0,-7,-37,-50,-195,0,-35,0,-29,0,-206,-23,-350,-326,-29977,-29974,-29985,-29986,-29991,-29992,-29992,-29993,-29993,-29992]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. a4 b4 8. O-O O-O 9. a5 d6 10. Nbd2 Bg4 {C84: Closed Ruy Lopez: Unusual White 6th moves} (10... Rb8 11. Re1 Be6 12. Bxe6 fxe6 13. Nb3 Qe8 14. d4 exd4 15. Nbxd4 Nxd4 16. Nxd4 Qd7 17. Qe2 c5 18. Nf3 e5 19. Bg5 Qb5 {1-0 (49) So,W (2808)-Gozzoli,Y (2583) chess.com INT 2017}) 11. h3 {LiveBook: 4 Games} Be6 12. Nc4 Nd7 {The position is equal.} 13. Be3 Bf6 $146 (13... Qb8 14. Ncd2 Kh8 15. Bxe6 fxe6 {1-0 (51) Lagno,K (2529)-Dzagnidze,N (2529) Huaian 2016}) 14. Nfd2 Ne7 15. Qe1 Rb8 16. Ra4 d5 17. exd5 Nxd5 18. Nf3 Qe7 19. Bd2 {[%cal Rf3e5]} Nc5 20. Ra1 Nxb3 21. cxb3 Rfe8 22. Qe4 (22. Ncxe5 Bxh3 $1 {[%mdl 512]} 23. d4 Bf5 $15) 22... Rb5 23. Rfe1 Qd8 24. g4 (24. Nfxe5 $11 c5 25. Re2) 24... h6 25. Nfxe5 Bxe5 26. Qxe5 h5 27. Qg3 $1 (27. Qxh5 $2 Nf4 28. Bxf4 Rxh5 29. gxh5 Bxh3 30. Rxe8+ Qxe8 $19) 27... hxg4 28. hxg4 Nf6 29. Ne5 Qd4 30. Nc6 Qxb2 31. Bxb4 ({White should play} 31. Bf4 $15) 31... Nd5 $2 (31... Qxb3 32. Reb1 Qd5 33. Ne7+ (33. Qxc7 Qxd3 34. Rd1 Qh3 $17) 33... Rxe7 34. Bxe7 $14) ({Better is} 31... Nxg4 $19 32. Ne7+ Kh8 33. Qh4+ Nh6) 32. Ba3 Qf6 {[%mdl 1024] Black has compensation.} 33. d4 Qg6 34. Re5 $2 {[#]} (34. Bc5 $11) 34... Qc2 $2 ({Black should try} 34... f6 $1 $19 {[%cal Rf6e5]} 35. Ree1 Bd7 36. Ne7+ Nxe7 37. Bxe7 Rg5) 35. Rh5 $2 {[%mdl 8192] [#]} (35. Rc1 $11 {and White has nothing to worry.} Qxb3 36. Qxb3 Rxb3 37. Bc5) 35... Nc3 $1 $19 (35... Qxc6 36. Qh2 Qc1+ 37. Rxc1 f5 38. Rh8+ Kf7 39. Qh5+ g6 40. Rh7+ Kg8 41. Qxg6#) (35... Rxb3 $2 36. Qh4 f6 37. Rh8+ Kf7 38. Qh5+ Qg6 39. Rxe8 Qxh5 40. Rf8+ Kg6 41. gxh5+ $18) 36. Qxc7 $2 (36. Qf3 $19 Rxh5 37. gxh5) 36... Rxh5 {Black mates.} 37. gxh5 Ne2+ ({Stronger than} 37... Bxb3 38. Ne7+ Kh8 39. Qe5 $11 (39. Qc6 $2 Rxe7 40. Qa8+ Kh7 41. Bxe7 Bd5 42. Qxd5 Nxd5 $19)) (37... Qxb3 38. Qe5 $17) 38. Kh2 Qe4 ({Inferior is} 38... Bxb3 39. Ne7+ Kh7 40. Qxc2+ Bxc2 41. d5 $16) 39. Ne7+ {[#]} Rxe7 $1 {[%mdl 512]} 40. Bxe7 Qg4 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Cordova, Emilio"]
[Black "Diaz Rosas, Julio Cesar"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2645"]
[BlackElo "2312"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,99,15,14,16,16,16,33,18,15,-10,-15,-22,37,-35,-29,-30,-19,-59,-53,-71,-41,-60,-58,-85,-88,-90,-96,-80,-81,-85,-64,-64,-63,-71,-59,-51,-44,-48,-50,-71,-14,-14,-14,-14,-20,-20,-15,-25,-29,-50,-47,-34,0,-133,-75,-79,0,0,0,0,79,79,79,79,79,79,79,77,166,166,168,83,171,77,77,77,77,77,77,77,77,77,130,104,117,112,203,203,188,190]} 1. Nf3 Nf6 2. d4 g6 3. Nbd2 d5 4. e3 Bg7 5. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} O-O {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} 6. Bb2 c6 {LiveBook: 20 Games} (6... Bf5 7. Be2 Nbd7 8. O-O c6 9. a4 Ne4 10. c4 Re8 11. cxd5 cxd5 12. Nxe4 Bxe4 13. Qb3 {1-0 (36) So,W (2808)-Vachier Lagrave,M (2796) chess.com INT 2017}) 7. a4 a5 {The position is equal.} 8. b5 Bg4 $146 (8... h6 9. c4 Ne4 10. cxd5 cxd5 11. Be2 f5 12. O-O Be6 13. Rc1 {1-0 (26) Hojka,C (2009)-Nikula,R (2277) Germany 2005}) 9. Be2 Nbd7 10. h3 Bxf3 $1 11. Bxf3 Qc7 ({Better is} 11... cxb5 $11 12. axb5 Qc7) 12. Rc1 (12. bxc6 $14 bxc6 13. c4) 12... cxb5 $15 13. axb5 Nb6 14. c3 Rfc8 15. Be2 Qd6 16. Qb3 a4 17. Qa2 a3 18. Ba1 e6 19. O-O Nfd7 20. Rc2 h5 21. Rfc1 Bf8 22. Bd3 h4 23. Be2 Be7 24. c4 dxc4 25. Bf3 Qb8 (25... Rc7 $17) 26. Nxc4 $11 Nxc4 27. Rxc4 Rxc4 28. Qxc4 Nb6 ({Reject} 28... a2 $6 29. Qc7 Qxc7 30. Rxc7 $16) 29. Qb3 Bd6 30. Be4 Kg7 31. f4 a2 32. Rc5 (32. Bb2 $1 $11) 32... Qa7 (32... Ra7 $142 33. Qc2 Ra4) 33. Kf2 $17 Qa3 ({Black should try} 33... Kg8 $1 $17 34. Rc2 Nd5 35. Bxd5 exd5 36. Qxd5 Qa4) 34. Qxa3 $11 Rxa3 35. Bxb7 {Hoping for Rc6.} Rb3 {[#]} (35... Be7 $11 {remains equal.}) 36. Rc2 $1 $16 ({But not} 36. Rc6 Rb1 37. Rxb6 (37. Rxd6 $2 Rxa1 38. Rxb6 Rf1+ 39. Kxf1 a1=Q+ 40. Kf2 Qa7 $19) 37... Rxa1 $11) 36... Nd5 37. Bxd5 exd5 38. Rxa2 Rxb5 {[%mdl 4096] Endgame KRB-KRB} 39. Bc3 Kf6 (39... Rb1 $16) 40. Ra6 $18 Ke6 {[#]} 41. Kf3 (41. Be1 $1 $18 {has better winning chances.}) 41... Kd7 (41... Rb1 $16) 42. Ra8 (42. Ra7+ $18 {and White stays clearly on top.} Ke6 43. Be1) 42... Be7 43. Be1 Rb3 44. Ra7+ Ke6 45. Ra6+ Kd7 46. Bf2 Rb2 {[#]} (46... Bd8 $142) 47. f5 $1 $16 {[%mdl 512]} gxf5 48. Rh6 Bg5 (48... f4 $16 {is a better defense.}) 49. Rh5 $18 f6 {intending ...Rb3.} 50. Bxh4 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Macieja, Bartlomiej"]
[Black "Salazar Farias, Luis German"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2529"]
[BlackElo "2296"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,37,7,-30,87,52,98,102,110,111,118,109,100,93,195,202,403,395,478,477,506,502,495,498]} 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. d4 Be7 6. Nc3 O-O 7. Qc2 c5 8. d5 exd5 9. Ng5 {[%cal Rc3d5]} g6 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} (9... Nc6 $11 10. Nxd5 g6) (9... Nc6 10. Nxd5 g6 11. Qd2 Ba6 12. b3 Nxd5 13. Bxd5 Bxg5 14. Qxg5 Nb4 15. Bxa8 Nc2+ 16. Kd1 Qxa8 17. Kxc2 Qxh1 {½-½ (42) Beliavsky,A (2622)-Banikas,H (2609) Reykjavik 2015}) 10. h4 {[%cal Bh2h4,Bh4g5][%mdl 32]} h5 $146 (10... Nc6 11. cxd5 Nd4 12. Qd1 Re8 13. h5 Nxh5 14. Nxh7 Kxh7 15. e3 Kg7 16. exd4 Bf6+ 17. Kf1 Bxd4 {0-1 (35) Pedersen,S (2463)-Pilgaard,K (2413) Nyborg 2001}) 11. Nxd5 Nc6 {White is better.} 12. Nxf6+ Bxf6 13. Bd5 {[#] Intending Qxg6+ and mate.} Kg7 14. Qd2 $36 {[%mdl 2048] Black must now prevent Nxf7. Keeping Black busy.} Bxg5 (14... Qe7 $16) 15. hxg5 $18 ({But not} 15. Qxg5 $6 Rh8 $16) 15... Qe7 $2 (15... Qb8 {was called for.}) 16. b3 ({Less strong is} 16. g4 d6 $16) 16... Rae8 17. Bb2+ {White is clearly winning.} Nd4 18. Bxd4+ cxd4 19. Bxb7 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Benitez Lozano, Javier"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2517"]
[BlackElo "2270"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,161,6,8,8,11,3,4,11,41,45,38,29,36,38,41,33,41,52,50,46,52,41,43,47,30,25,89,57,136,44,47,36,33,21,35,10,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,5,20,19,4,52,49,39,39,46,6,31,12,10,9,18,18,18,16,25,0,0,0,0,0,7,7,14,14,16,14,14,14,19,19,30,13,32,15,16,7,14,0,8,12,36,31,39,25,15,16,31,0,46,35,47,46,140,44,515,52,393,347,362,341,714,686,1185,1132,1274,1170,1404,1379,1362,1337,2801,2509,5126,5126]} 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. Nc3 O-O 7. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Ne4 8. Bd2 Bf6 9. Rc1 d6 10. d5 Nxd2 11. Nxd2 e5 {LiveBook: 21 Games. E18: Queen's Indian: Old Main Line (4 g3 Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3)} 12. Qc2 (12. b4 a5 13. a3 axb4 14. axb4 Na6 15. Qb3 Bg5 16. e3 f5 17. f4 Bf6 18. fxe5 Bxe5 19. Nf3 {1-0 (28) Nakamura,H (2785)-Iturrizaga Bonelli,E (2652) Caleta 2017}) 12... g6 13. b4 $146 (13. e4 Nd7 14. f4 exf4 15. gxf4 Bg7 16. Rce1 Re8 17. Nf3 Nf6 18. e5 Nh5 19. Re4 {0-1 (37) Teplyi,I (2448)-Matthiesen,M (2329) Aarhus 2017}) 13... a5 {The position is equal.} 14. a3 axb4 15. axb4 Na6 16. Rb1 Bg7 17. e4 f5 18. Nf3 f4 19. Bh3 Bh6 20. Kg2 Bc8 21. Bxc8 Qxc8 22. h3 fxg3 23. fxg3 Kh8 (23... Nb8 $11) 24. Qe2 Qd7 (24... Nb8 $14) 25. Nh2 ({White should try} 25. Rb2 $1 $16) 25... Rxf1 $14 26. Nxf1 {Threatens to win with Ra1.} Nb8 {[%cal Ba6b8,Bb8d7,Bd7f6][%mdl 32]} 27. Qb2 Qc8 28. Nb5 Nd7 29. Ra1 Rxa1 30. Qxa1 Nf6 31. Qb1 Qd7 32. Qd3 Kg7 33. Nh2 Qc8 34. Nf3 Qd7 35. Ng1 Bg5 36. Nf3 Bh6 37. Qc2 Be3 38. Qe2 Bh6 39. Nc3 Qc8 40. Qa2 Be3 41. Qa7 Qd7 42. Nb5 Ne8 43. Qa3 Bh6 44. Nc3 Be3 45. Nd1 Bh6 46. Nf2 Nf6 47. Kf1 Qf7 48. Ke2 Qd7 49. Nh2 Bg5 50. h4 Bh6 51. Kf1 Bd2 52. Kg2 h5 53. Nf3 Bh6 54. c5 bxc5 55. bxc5 Qe7 56. c6 Qd8 57. Qa7 Kg8 58. Kf1 Kg7 59. Ke2 Kf7 60. Qb7 Ke7 61. Ne1 Kf7 62. Ned3 Ne8 63. Ne1 g5 64. hxg5 Bxg5 65. Nf3 Bf6 66. g4 hxg4 67. Nxg4 Ng7 68. Ne3 Ke7 69. Kd3 Kf7 70. Kc4 Kg6 {[#]} (70... Nh5 $14) 71. Kb5 $1 $36 {[%mdl 2048] White has the initiative.} Qh8 $2 {[%mdl 8192]} (71... Nh5 $1 $14) 72. Nc4 $2 (72. Qxc7 $18 Qd8 73. Qb7) 72... Qh3 $2 {[%mdl 8192]} ({Better is} 72... Ne8 $1 $14) 73. Qxc7 $18 Qxf3 74. Nxd6 (74. Qxd6 Qxe4 75. Qd7 Qb1+ 76. Kc5 Qg1+ 77. Kb5 Qb1+ 78. Kc5 Qg1+ 79. Kb5 Qb1+ $11) 74... Qb3+ $2 {[#]} (74... Bg5 75. Ka6 (75. Qd7 Qb3+ 76. Ka6 Be3 $11) 75... Qa3+ 76. Kb7 Be3) 75. Ka6 $1 {White is clearly winning.} Bg5 {intending ...Be3.} 76. Qb6 Qa3+ 77. Kb7 Be3 78. Qa6 Qb4+ 79. Nb5 Ne8 80. c7+ Kg5 81. c8=Q 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Fernandez Cardoso, Alexey"]
[Black "Lopez Raygoza, Luis Albert"]
[Result "1/2-1/2"]
[ECO "B37"]
[WhiteElo "2445"]
[BlackElo "2250"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,98,39,54,47,48,44,52,38,52,29,30,35,24,34,29,22,57,31,52,54,47,52,59,53,68,76,68,28,31,22,42,10,22,14,28,0,0,0,0,-13,15,-16,22,0,0,-62,-18,-18,0,0,0,0,0,0,0,0,0,-93,-81,-144,-140,-113,-120,-190,0,0,0,0,0,0,0,-49,-49,-49,-49,-49,1291]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 Nf6 {[%cal Bg8f6,Bf6d7,Bd7c5][%mdl 32]} 7. Nc3 O-O 8. Be2 d6 9. O-O a5 {B37: Sicilian: Maroczy Bind with 5...Bg7, sidelines} (9... Be6 10. Bd2 Nd7 11. Rc1 Nc5 12. b4 Bxc3 13. Bxc3 Nxe4 14. Ba1 a5 15. b5 Ne5 16. Qd4 Nf6 17. Ne3 Ned7 18. Bf3 {1-0 (33) Aronian,L (2785)-Flores,D (2579) Doha 2016}) 10. Be3 Nd7 11. Qd2 Nc5 12. f3 Be6 {LiveBook: 6 Games} 13. Rac1 a4 14. Na3 Qa5 15. Rfd1 Rfc8 16. Nd5 $146 (16. Bf1 h5 17. Qf2 Ne5 18. h3 Ned7 19. Nab5 {1-0 (41) Rachela,M (2364)-Pinter,E (2379) Slovakia 2012}) 16... Qxd2 17. Rxd2 {Nb6 is the strong threat.} Bxd5 18. cxd5 Nb4 19. Ra1 Nd7 20. Bb5 Rc7 21. Bd4 Bh6 22. Rdd1 Ne5 23. Bc3 $1 {[%cal Rc3b4]} Be3+ 24. Kf1 Bc5 25. Be2 h5 26. g3 Rcc8 27. h3 Na6 28. Nb5 Bb6 29. Kg2 Nc4 30. Bxc4 Rxc4 31. g4 h4 32. Na3 Rc7 33. Be1 g5 34. b4 (34. Rac1 $11) 34... axb3 35. axb3 Be3 36. Nc4 Bf4 37. Ra5 Rac8 38. Rb5 Rb8 39. Bf2 Nc5 40. Ra1 (40. Nb6 $11 {remains equal.}) 40... Nxb3 $1 $17 41. Rxb3 ({White should try} 41. Ra4 Nc5 42. Bxc5 Rxc5 43. Rxc5 dxc5 44. Nb6) 41... Rxc4 42. Rab1 Rc2 {Strongly threatening ...Bg3.} 43. Kf1 (43. Kg1 $17 {might work better.}) 43... Rc1+ $2 {[#]} (43... Ra8 $19 {Threatens to win with ...Raa2.} 44. R3b2 Rc3) 44. Rxc1 $11 Bxc1 {KRB-KRB} 45. Ba7 Rc8 46. Rxb7 Kf8 47. Bd4 Bf4 {Black is slightly better.} 48. Rb2 f6 49. Ra2 Ra8 $2 {[%mdl 40960] An unexpected result.} (49... Rc4 $15 50. Bf2 Kf7) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Perez Garcia, Rodney Oscar"]
[Black "Gonzalez Vidal, Yuri"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2308"]
[BlackElo "2534"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 8,46,9,4,28,36,38,27,47,41,43,62,47,48,57,30,62,30,67,59,95,31,78,72,94,93,95,93,108,30,53,23,26,38,35,29,36,25,35,36,52]} 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. Bd3 Nc6 5. Bc2 {LiveBook: 38 Games. B40: Sicilian: 2...e6, Unusual lines} g6 (5... d5 6. e5 Nd7 7. d4 Be7 8. O-O b5 9. a3 cxd4 10. cxd4 b4 11. a4 Qb6 12. Re1 Ba6 {1-0 (34) Bauer,C (2622)-Hansen,E (2584) Linares 2013}) 6. d4 $146 (6. O-O Bg7 7. d4 cxd4 8. cxd4 O-O 9. Nc3 d6 10. Bf4 Nh5 11. Bg5 Qb6 12. Na4 Qc7 {1-0 (79) Kotan,L (2275)-Borgo,G (2445) Pardubice 1998}) 6... d5 7. exd5 Nxd5 8. dxc5 Bxc5 9. O-O O-O 10. Bh6 Re8 11. Nbd2 {[%cal Bb1d2,Bd2e4,Be4f6][%mdl 32]} Qc7 12. Re1 $36 {[%mdl 2048] [#] And now Ne4 would win. Black is under pressure.} Bd7 13. Ne4 Be7 $1 14. Bb3 ({Better is} 14. h4 $16) 14... Nf6 15. Nfg5 {Black must now prevent Qf3.} Ne5 {[%cal Bc6e5,Be5d7,Bd7c5,Bc5e6][%mdl 32] [#] Threatening ...Nfg4.} 16. Nxf6+ $1 Bxf6 17. Ne4 Bh8 18. Bg5 (18. f4 $16 Nc6 19. Qd6) 18... Bc6 $11 19. Nf6+ Bxf6 $1 20. Bxf6 Nd7 21. Bg5 Nc5 22. Bc2 e5 $1 23. Qg4 Ne6 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Tello Chavez, Isaac Valent"]
[Black "Obregon Rivero, Juan Carlos"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "2286"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,95,4,0,49,34,47,17,10,12,29,-8,0,-22,-16,-22,-8,-10,1,-11,-12,-18,-15,-13,-15,-35,-55,-38,-22,-32,-23,-17,-17,-14,-21,-22,0,0,0,-101,0,-43,-7,-139,-137,-126,-109,-136,-126,-270,-295,-529,-528,-509,-500,-755,-748,-747,-746,-749,-743,-745,-747,-722,-695,-873,-889,-1162,-1162,-1154,-1150,-1131,-1117,-1674,-1695,-1623,-1597,-1443,-1442,-1491,-1337,-1276,-1264,-2381,-2094,-1979]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e3 d6 6. Nge2 c6 7. O-O {LiveBook: 28 Games} Be6 {A16: English Opening: 1...Nf6 with ...d5} (7... a5 8. d3 e5 9. b3 Re8 10. Bb2 d5 11. Na4 Na6 12. Rc1 dxc4 13. dxc4 Bf5 14. Qxd8 Raxd8 15. Rcd1 Rxd1 16. Rxd1 {½-½ (58) Haznedaroglu,K (2473)-Adhiban,B (2663) Dubai 2016}) 8. b3 Qc8 9. Re1 Bh3 $146 {The position is equal.} (9... Na6 10. Bb2 Nc7 11. Qc2 d5 12. d3 Bh3 13. Bh1 e5 14. cxd5 Nfxd5 15. Ne4 {0-1 (35) Askarov,M (2404)-Yatsenko,A (2286) Dagomys 2004}) 10. d4 e5 11. dxe5 dxe5 12. e4 Bxg2 13. Kxg2 Rd8 14. Qc2 Nbd7 15. Ba3 Bf8 16. Bxf8 Nxf8 17. Rad1 Ne6 18. Na4 Rxd1 19. Qxd1 b5 (19... Qc7 $5 {creates asymmetry.} 20. Nac3 h5 21. Qc1 h4 22. f4 hxg3 23. hxg3 Nc5) 20. Nb2 Qa6 (20... Nxe4 $5 {with more complications.} 21. Ng1 Nc3 22. Qd2 b4 23. Rxe5 c5) 21. Qb1 Rd8 22. cxb5 cxb5 {aiming for ...Rd2.} 23. Rd1 $1 Rc8 24. f3 Qb6 $36 {[%mdl 2048] Black fights for an advantage.} 25. Rd3 {[#]} (25. Nd3 $11 {keeps the balance.}) 25... Qb7 (25... g5 $1 $17 26. h3 h5) 26. Qd1 Kg7 27. b4 {[#]} (27. h4 $11) 27... Nxe4 $1 $17 {[%mdl 512]} 28. fxe4 Qxe4+ 29. Kf2 ({Don't capture} 29. Kg1 $2 Ng5 30. Kf2 Rc6 $19) 29... Ng5 (29... Qxb4 30. Qb3 Qg4 31. Qxb5 $11) 30. Ng1 {[#]} (30. h4 $17 Nh3+ 31. Ke1) 30... Rc6 $1 $19 ({Don't play} 30... Qxb4 31. Qe2 e4 32. Rd5 e3+ 33. Kf1 $19) 31. Qe2 $2 (31. a3 {was necessary.}) 31... Qh1 {Black is clearly winning.} 32. Qxe5+ Rf6+ 33. Nf3 (33. Ke2 $142 Qxh2+ 34. Kd1 Qxg1+ 35. Kc2) 33... Nxf3 34. Qxf6+ Kxf6 35. Rxf3+ {[%mdl 4096] Endgame KQ-KRN} Kg7 36. Nd3 Qxh2+ 37. Ke3 Qxa2 38. Rf4 h5 39. Rf3 a5 40. bxa5 Qxa5 41. Rf4 Qb6+ 42. Kf3 Qc6+ 43. Ke3 Qg2 44. Rf3 g5 45. Ne1 Qg1+ 46. Ke2 Qh2+ 47. Kd3 b4 48. Kd4 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Cofre Archibold, Nestor"]
[Black "Hernandez Guerrero, Gilberto"]
[Result "0-1"]
[ECO "E68"]
[WhiteElo "2256"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,31,41,22,31,37,36,33,34,37,40,10]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4 c6 9. Re1 Qb6 10. d5 Nc5 11. h3 Bd7 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3} (11... cxd5 12. cxd5 Bd7 13. Qe2 Rfc8 14. Be3 Qb4 15. Bc1 a5 16. Rb1 a4 17. a3 Qa5 18. Nd2 Rab8 19. Qe3 Qa6 20. Na2 Qd3 21. Nb4 Qxe3 22. Rxe3 {½-½ (62) Yilmaz,M (2570)-Cheparinov,I (2681) Jerusalem 2015}) 12. Rb1 {LiveBook: 6 Games} a5 13. dxc6 $146 {White is slightly better.} (13. Bf1 Qc7 14. Bg5 h6 15. Bxf6 Bxf6 16. Qd2 Kh7 17. Rbd1 Be7 18. h4 Qb6 19. Bg2 {½-½ (66) Ionov,S (2500)-Mainka,R (2455) Candas 1992}) 13... Bxc6 {[%cal Rf6e4]} 14. Be3 Rfd8 15. Nd2 a4 16. Kh2 {[%mdl 32768] Loss on time?} 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "3"]
[White "Blanco Fernandez, Alvaro"]
[Black "Leon Valdes, Jony Wilson"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "2241"]
[BlackElo "2363"]
[Annotator "NA"]
[PlyCount "87"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. Nf3 {[%emt 0:01:23]} e6 {[%emt 0:00:19]} 2. c4 {[%emt 0:00:09]} Nf6 {[%emt 0:00:09]} 3. Nc3 {[%emt 0:00:34]} b6 {[%emt 0:04:19]} 4. g3 {[%emt 0:03:49]} Bb7 {[%emt 0:00:05]} 5. Bg2 {[%emt 0:00:03]} Be7 {[%emt 0:00:11]} 6. O-O {[%emt 0:00:02]} O-O {[%emt 0:00:09]} 7. Re1 {[%emt 0:00:02]} d5 {[%emt 0:00:06]} 8. cxd5 {[%emt 0:00:17]} exd5 {[%emt 0:00:26]} 9. d4 {[%emt 0:00:13]} Ne4 {[%emt 0:00:46]} 10. Qb3 {[%emt 0:05:21]} Nxc3 {[%emt 0:00:40]} 11. bxc3 {[%emt 0:00:44]} Nc6 {[%emt 0:04:53]} 12. h4 {[%emt 0:01:23]} Na5 {[%emt 0:12:42]} 13. Qc2 {[%emt 0:00:15]} f6 {[%emt 0:06:18]} 14. Nd2 {[%emt 0:04:45]} Kh8 {[%emt 0:00:54]} 15. h5 {[%emt 0:02:19]} Qd7 {[%emt 0:05:40]} 16. Kh2 {[%emt 0:09:10]} Qe8 {[%emt 0:04:44]} 17. Bf3 {[%emt 0:02:23]} f5 {[%emt 0:01:34]} 18. Nb3 {[%emt 0:04:06]} Nc4 {[%emt 0:02:15]} 19. Bf4 {[%emt 0:00:11]} Bd6 {[%emt 0:02:03]} 20. Nd2 {[%emt 0:00:15]} Bxf4 {[%emt 0:03:14]} 21. Nxc4 {[%emt 0:00:37]} Rb8 {[%emt 0:07:45]} 22. Nb2 {[%emt 0:11:12]} Bd6 {[%emt 0:00:33]} 23. e3 {[%emt 0:00:33]} Qf7 {[%emt 0:09:04]} 24. Kg2 {[%emt 0:00:47]} c5 {[%emt 0:06:31]} 25. Nd3 {[%emt 0:00:43]} cxd4 {[%emt 0:01:00]} 26. exd4 {[%emt 0:00:28]} f4 {[%emt 0:01:06]} 27. g4 {[%emt 0:00:10]} Rbc8 {[%emt 0:03:51]} 28. Ne5 {[%emt 0:07:27]} Qc7 {[%emt 0:02:03]} 29. Rac1 {[%emt 0:03:15]} Ba3 {[%emt 0:01:56]} 30. Rcd1 {[%emt 0:00:07]} Qxc3 {[%emt 0:01:07]} 31. Qb1 {[%emt 0:00:02]} Qb4 {[%emt 0:06:18]} 32. Qd3 {[%emt 0:02:40]} Rc3 {[%emt 0:01:43]} 33. Qd2 {[%emt 0:02:17]} Rc7 {[%emt 0:02:21]} 34. Qd3 {[%emt 0:00:47]} Qd6 {[%emt 0:00:51]} 35. Ng6+ {[%emt 0:03:17]} hxg6 {[%emt 0:00:04]} 36. hxg6 {[%emt 0:00:06]} Kg8 {[%emt 0:01:09]} 37. Re5 {[%emt 0:00:12]} Rc1 {[%emt 0:03:36]} 38. Rd2 {[%emt 0:04:38]} Bb4 {[%emt 0:01:45]} 39. Rde2 {[%emt 0:00:39]} Rc3 {[%emt 0:02:42]} 40. Qb1 {[%emt 0:00:16]} Ba6 {[%emt 0:01:14]} 41. Qh1 {[%emt 0:02:01]} Qxg6 {[%emt 0:00:05]} 42. Bxd5+ {[%emt 0:00:05]} Rf7 {[%emt 0:00:02]} 43. Re8+ {[%emt 0:00:09]} Bf8 {[%emt 0:00:03]} 44. Rxf8+ {[%emt 0:00:08]} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Gonzalez Vidal, Yuri"]
[Black "Blanco Fernandez, Alvaro"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2534"]
[BlackElo "2241"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,106,31,43,47,47,27,29,28,26,38,36,11,9,4,4,9,11,7,16,7,7,4,8,8,8,0,8,0,0,0,0,0,0,0,0,0,85,81,81,76,84,92,104,98,122,100,104,112,167,167,162,147,154,86,86,86,86,0,6,0,86,0,86,86,86,86,86,0,0,0,86,86,86,86,86,86,86,86,86,86,86,86,86,86,86,86,437,422,72,72,422,422,29987]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. O-O {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} Bd6 5. c3 Nge7 6. d4 cxd4 7. cxd4 exd4 8. Nxd4 a6 {LiveBook: 11 Games} 9. Be2 O-O 10. Nc3 Be5 11. Be3 d5 12. exd5 Nxd5 13. Nxc6 $146 (13. Nxd5 Nxd4 14. Bxd4 Qxd5 {½-½ (35) Bartel,M (2619)-Jobava,B (2702) Legnica 2013}) 13... bxc6 14. Nxd5 cxd5 15. Bd4 Qf6 16. Bxe5 Qxe5 17. Qd2 a5 18. Rfe1 Qf6 19. Bf3 Be6 20. Rad1 h6 21. Qd4 (21. Bxd5 Rad8 22. Qxa5 Qg5 $19) 21... Qxd4 22. Rxd4 Rab8 23. b3 $36 {[%mdl 2048] White is more active.} (23. Bxd5 Rfd8 24. Red1 (24. Rxe6 fxe6 25. Bxe6+ Kf8 26. Rxd8+ Rxd8 $17) 24... Bxd5 25. Rxd5 Rxd5 26. Rxd5 Rxb2 $17) 23... Rb4 24. Red1 Rc8 25. Kf1 Rc2 (25... Rxd4 $11 26. Rxd4 Kf8) 26. Rxb4 $16 ({But not} 26. Bxd5 $6 Bxd5 27. Rxb4 (27. Rxd5 Rxa2 28. R5d3 Ra3 $15) 27... Bxg2+ 28. Kxg2 axb4 $11) 26... axb4 27. Bxd5 {[%mdl 4096] Endgame KRB-KRB} Bf5 28. Rd4 Rxa2 29. g4 ({Of course not} 29. Rxb4 Bd3+ 30. Ke1 Re2+ 31. Kd1 Rxf2 $14) 29... Be6 30. Bxe6 fxe6 31. Rxb4 {KR-KR} Rb2 (31... Kf7 $16) 32. Rb7 $18 Kh7 33. Kg2 Kg6 34. h4 (34. Rb5 $142) 34... h5 $16 35. g5 Rb1 36. b4 ({White should play} 36. f3 $16) 36... Rb3 37. f3 Rb1 (37... e5 $1 $11 {keeps the balance.}) 38. b5 (38. Rb5 $16) 38... Rb4 (38... Rb2+ $11 {remains equal.} 39. Kg3 e5) 39. Kg3 e5 40. b6 Rb3 41. Kf2 ({Better is} 41. Re7 $16) 41... Rb4 $11 42. Kg3 (42. Kg2 $11) 42... Rb3 $16 43. Re7 {And now b7 would win.} Rxb6 44. Rxe5 Ra6 45. Kf4 Ra4+ 46. Re4 Ra6 47. Rd4 Rb6 48. Ke5 Rb5+ 49. Ke4 Rb1 50. Rd6+ Kh7 $2 {[%mdl 8192]} (50... Kf7 $16) 51. f4 $18 Re1+ 52. Kf5 {Hoping for Rd8.} Ra1 $2 {[%mdl 8192] [#]} (52... Re7 $16 {is tougher.}) 53. Ke6 $1 Re1+ {[%mdl 32768] An unexpected result.} (53... Ra8 $18 54. f5 Rf8) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Obregon Rivero, Juan Carlos"]
[Black "Diaz Hernandez, Heriberto"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2529"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,101,-22,-14,-13,0,0,0,0,0,-6,0,0,0,-6,0,0,0,0,0,0,0,0,15,0,26,23,42,45,60,37,61,81,46,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,198,206,540,550,1277,801,1529,1816,29962,29963,29964,29959,29967,29968,29967,29968,29976,29970,29968,29969,29981,29982,29982,29983,29985,29984,29989,29990]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3 h5 7. d3 Qf6 8. Be3 Bxf3 9. Qxf3 Qxf3 10. gxf3 Bd6 11. Nd2 Ne7 12. Rfb1 {C68: Ruy Lopez: Exchange Variation, sidelines} (12. Nc4 Ng6 13. Rfd1 f6 14. Kf1 c5 15. a4 a5 16. Ke2 Nf8 17. f4 exf4 18. Nxd6+ cxd6 19. Bxf4 Kd7 20. Be3 {½-½ (41) Socko,B (2600)-Piorun,K (2681) Katowice 2016}) 12... f6 {LiveBook: 3 Games} 13. b4 g5 14. a4 {The position is equal.} Ng6 15. Kf1 Kd7 16. a5 $146 (16. c3 Rag8 17. Nb3 Nf4 18. Bxf4 gxf4 19. Rd1 Rg6 {½-½ (34) Malbran,G (2345)-Ibar,M (2315) Vicente Lopez 2003}) 16... Nf4 17. Bxf4 gxf4 18. c4 {[%cal Bc2c4,Bc4c5][%mdl 32]} Rhg8 19. c5 Be7 20. d4 Ke6 21. Nb3 Rad8 22. Rd1 Rd7 23. Ra2 Rgd8 24. Ke2 Bf8 25. Rad2 Bg7 26. d5+ Ke7 27. b5 $1 {[%cal Rb5b6]} axb5 28. dxc6 {[%cal Rd2d7]} Rxd2+ $1 29. Rxd2 bxc6 30. Rxd8 Kxd8 $16 {[%mdl 4096] Endgame KB-KN} 31. a6 Kc8 32. Na5 {[#] Hoping for a7.} Kb8 33. Nxc6+ Ka8 34. Nd8 {Strongly threatening Ne6.} c6 35. Nxc6 {Black must now prevent Ne7.} Bf8 36. Nd8 Bxc5 37. Ne6 Bb6 $2 {[#]} (37... Be7 $11 {and Black stays safe.}) 38. Ng7 $18 h4 $2 (38... Ka7 39. Nxh5 Kxa6) 39. Nf5 b4 40. Nxh4 Bxf2 41. Nf5 Ka7 42. Kxf2 {KN-KP. White mates.} b3 43. Nd6 Kxa6 44. Nc4 Kb5 45. Nd2 b2 46. Ke2 Kb4 47. Kd3 f5 48. exf5 e4+ 49. fxe4 f3 50. Kc2 Ka3 51. Nxf3 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Cordova, Emilio"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "2499"]
[BlackElo "2645"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,42,22,34,9,15,0,42,31,49,48,55,44,53,0,21,0,29,0,0]} 1. e4 c6 2. d4 d5 3. Nd2 {[%cal Bb1d2,Bd2e4,Be4g3][%mdl 32]} dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bf4 e6 12. O-O-O Be7 13. Kb1 a5 14. Ne5 {B19: Classical Caro-Kann: 4...Bf5 main line} (14. Ne4 Nxe4 15. Qxe4 Nf6 16. Qe2 Qd5 17. Bc1 Nxh5 18. Ne5 Nf6 19. f3 a4 20. Rd3 Rf8 21. Bd2 Qb5 {0-1 (60) Kotronias,V (2565)-Onischuk,V (2629) Cappelle-la-Grande 2015}) 14... a4 15. a3 Ra5 $146 (15... O-O 16. Ne4 Nxe4 17. Qxe4 Nf6 18. Qe2 Qd5 19. g4 Qe4 20. Qd2 Nd5 21. Bg3 {0-1 (63) Martin Gonzalez,A (2410)-Lobron,E (2515) Rome 1983}) 16. Qf3 {White is slightly better.} Rb5 17. Rd3 Qb6 18. Nc4 Qa6 19. Ne5 Qb6 20. Nc4 Qa6 21. Ne5 Qb6 $1 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Villalba Velazquez, Ander Ivan"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2477"]
[BlackElo "2188"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,101,36,26,24,30,12,52,52,72,69,65,66,60,67,70,73,74,37,37,40,43,43,53,0,51,31,75,63,51,54,120,68,65,69,104,98,106,119,374,380,375,358,359,366,371,375,371,369,377,380,369,371,375,375,366,365,517,508,554,544,537,518,527,523,523,497,510,498,492,487,664,652,775,762,715,721,1059,1059,1029,1029,1027,1020,1005,963,973,876]} 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 exd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qd2 {A29: English Opening: Four Knights Variation with 4 g3} Rb8 11. b3 b6 $146 (11... a6 12. Bb2 b5 13. cxb5 axb5 14. Nd5 Nxd5 {½-½ (14) Drozdovskij,Y (2581)-Arutinian,D (2593) Dubai 2008}) 12. Bb2 {White is slightly better.} Bb7 13. e4 Re8 {[%cal Rf6e4]} 14. f3 a5 15. Nb5 Nd7 16. Bxg7 Kxg7 17. Qd4+ Kg8 18. Rad1 Bc6 19. Na7 Bb7 20. Nb5 Bc6 21. Nc3 b5 22. cxb5 Bxb5 23. Rf2 Qf6 (23... Bc6 $14) 24. Qd2 (24. Nd5 $16 Qxd4 25. Rxd4) 24... Bc6 $14 25. f4 $36 {[%mdl 2048] Black is under pressure.} Qe7 26. e5 Bxg2 27. Kxg2 Nc5 $2 {[%mdl 8192] [#]} (27... Rbc8 $16 {was called for.} 28. Re2 Qe6) 28. Nd5 $18 (28. exd6 Qxd6 29. Qxd6 cxd6 $16) 28... Qd8 29. Nf6+ ({Less strong is} 29. Qxa5 Ne4 $18) 29... Kg7 30. Nxe8+ Qxe8 31. exd6 ({Resist} 31. Qxa5 Qc6+ 32. Kg1 Ne4 $18) 31... Qc6+ 32. Qd5 Qxd5+ 33. Rxd5 cxd6 {[%mdl 4096] Endgame KRR-KRN} 34. Rfd2 a4 35. bxa4 ({Much less strong is} 35. Rxd6 axb3 36. Rb2 bxa2 37. Rxa2 Rb7 $18) 35... Ra8 36. Rxd6 Ne4 (36... Rxa4 $142 37. R6d5 Rc4) 37. Rd8 {White is clearly winning.} Ra5 38. R2d4 Nc3 39. Rb4 Nxa4 40. Rdd4 Nc5 41. a4 Ne6 42. Rdc4 Rd5 43. Rc2 g5 44. fxg5 Rxg5 45. Rb5 {[#] Black must now prevent Rxg5+.} Rg6 46. Rc4 Nf8 47. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Ra6 48. Rg4+ Ng6 49. Ra4 Ne7 50. Rb6 Ra7 51. a6 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Otero Acosta, Diasmany"]
[Black "Cruz, Gomez Miguel Angel"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2438"]
[BlackElo "2125"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,54,60,24,33,19,38,40,34,35,59,59,62,55,67,56,52,48,61,29,51,45,75,80,73,60,124,21,30,29,189,195,194,201,197,161,189,176,720,708,699,695,5514,3841,5506,5422,5086,2685]} 1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. a3 d6 5. Nc3 g6 6. Bg5 {E10: Blumenfeld Gambit} h6 7. Bh4 g5 (7... Bg7 8. e3 g5 9. Bg3 Nh5 10. Be2 Nxg3 11. hxg3 Ne7 12. g4 b6 13. Qc2 Bb7 {0-1 (53) Akobian,V (2645)-Caruana,F (2817) chess.com INT 2017}) 8. Bg3 {White is slightly better.} Nh5 9. e3 Nxg3 $146 (9... Bg7 10. Bd3 Qe7 11. Rc1 a6 12. O-O Nxg3 13. hxg3 Bd7 {1-0 (58) Brown,A (2202)-Jackson,J (2157) Sunningdale 2011}) 10. hxg3 Bg7 11. Qc2 e5 12. d5 Ne7 13. Be2 Bf5 14. Bd3 $36 {[%mdl 2048] White has the initiative.} Bd7 15. O-O-O f5 16. e4 {[%cal Re4f5]} O-O 17. exf5 Bxf5 (17... Nxf5 $14 18. Kb1 g4) 18. Ne4 (18. Bxf5 $16 Nxf5 19. g4) 18... Qd7 $11 19. Kb1 c6 $2 (19... Rab8 $11 {and Black stays safe.}) 20. dxc6 $18 bxc6 {[#]} 21. Nxd6 $1 {[%mdl 512]} Bxd3 (21... Qxd6 22. Bxf5) 22. Rxd3 Nf5 23. c5 {And now Qc4+ would win.} Ne7 $2 (23... Nxd6 24. Re1 (24. cxd6 e4 25. Qc4+ Qf7 26. Qxe4 Rab8 $16) (24. Rxd6 Qf5 $16) 24... g4) 24. Qc4+ {White is clearly winning.} Nd5 25. Rxd5 cxd5 26. Qxd5+ Kh8 27. Nxg5 {[#] Intending Qe4 and mate.} Rad8 28. Qe4 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Della Morte, Pablo"]
[Black "Macieja, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2333"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "36"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 7,36,20,19,17,16,16,27,15,30,26,32,21,27,8,32,26,25,16,31,10,11,-8,0,-6,-10,-22,-6,-26,-19,-31,-11]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Ngf6 6. c3 {[%cal Bc2c3,Bc3d4][%mdl 32]} (6. Re1 e6 7. c3 b5 8. Bc2 c4 9. a4 Bb7 10. d4 cxd3 11. Bxd3 bxa4 12. Qxa4 Be7 13. h3 O-O 14. Be3 Qc7 15. Nbd2 Rfb8 16. Qa5 Bd8 17. Qxc7 Bxc7 18. b4 {½-½ (18) Nakamura,H (2785)-Vachier Lagrave,M (2796) Sharjah 2017}) 6... b5 7. Bc2 {White has an edge.} Bb7 8. Re1 e6 9. d4 Be7 10. Nbd2 cxd4 11. cxd4 O-O 12. Nf1 Qc7 13. Bg5 $146 (13. Ng3 Rfc8 14. Bd3 {½-½ (35) Polsterer,H (2390)-Jonsson,D (2519) ICCF email 2013}) 13... h6 14. Bh4 Rfc8 15. Bd3 Nf8 16. Qd2 Ng6 17. Rac1 Qb6 {Strongly threatening ...Rxc1.} 18. Rxc8+ Rxc8 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Garcia Guerrero, Isaac Antonio"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2332"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,141,75,15,52,45,46,41,43,48,40,33,39,22,14,19,16,7,6,2,19,8,19,23,22,15,16,18,3,10,7,0,0,0,0,0,0,0,18,0,13,0,14,0,0,-14,-8,-24,-23,-28,-27,-26,-22,-20,-18,-19,0,0,0,0,0,0,27,19,23,0,0,0,0,-7,11,0,0,0,0,0,0,-36,-36,-36,0,-36,-36,-36,-36,-36,-36,-36,-36,-57,-58,-42,-42,-77,-58,-259,-210,-324,-266,-393,-438,-445,-419,-412,-389,-354,-281,-642,-602,-773,-761,-744,-722,-773,-767,-725,-737,-529,-464,-682,-619,-492,-239,-934,-522,-6080,-5173,-2308,-573,-29972,-29971,-29968,-29970,-29991]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 c6 5. Bd3 {A45: Trompowsky Attack} Qb6 (5... Nd6 6. Nf3 Bg4 7. Nbd2 e6 8. O-O Nd7 9. c4 dxc4 10. Nxc4 Nxc4 11. Bxc4 Nb6 12. Be2 Bxf3 13. Bxf3 {½-½ (55) Lenic,L (2646)-Kozul,Z (2632) Austria 2015}) 6. Qc1 {LiveBook: 16 Games} (6. b3 $16) 6... Qa5+ 7. Nd2 {White is slightly better.} Nxd2 8. Qxd2 Qxd2+ 9. Kxd2 Nd7 10. Nf3 g6 11. c4 dxc4 12. Bxc4 Bg7 13. Bd3 $146 O-O 14. Rac1 Nf6 15. h3 Be6 16. Bc4 Bd5 17. Bxd5 Nxd5 18. Be5 f6 19. Bg3 a5 20. Ke2 a4 21. a3 Ra5 22. Rc2 Rb5 23. Rd1 h6 24. Rdd2 g5 25. Rc4 Ra8 26. Rdc2 e6 27. Ne1 Bf8 28. Nd3 Nb6 29. R4c3 Kf7 30. f3 Nd7 31. Rc4 Be7 32. Rc1 Rba5 33. Rh1 Rg8 34. Be1 Raa8 35. Bb4 Bd8 36. Bd6 h5 37. Rcc1 h4 38. Rhf1 Ra5 39. Rc4 Re8 40. Rd1 Be7 41. Bxe7 Kxe7 42. Nc5 Nxc5 43. Rxc5 $11 {[%mdl 4096] Endgame KRR-KRR} (43. dxc5 $5 {creates asymmetry.} Rb8 44. Rd2 f5 45. e4 f4 46. Rb4) 43... Rea8 44. Rdc1 Rxc5 45. Rxc5 $15 {KR-KR} (45. dxc5 $5 {is interesting.} Ra5 46. Rc4 Rb5 47. Rb4 Kd8 48. Kd3) 45... Kd6 46. Kd3 Ra6 47. Rc4 b5 48. Rc2 Ra7 49. e4 Rd7 50. Ke3 Kc7 51. Rc1 Kb6 52. Rf1 $2 (52. Rg1 $15) 52... e5 $1 $19 53. dxe5 (53. d5 $142) 53... fxe5 54. g3 (54. Rf2 $142 c5 55. Rc2) 54... hxg3 55. Rg1 c5 $1 {[%cal Bc6c5,Bc5c4][%mdl 32]} 56. Rxg3 {[#]} c4 $1 57. Ke2 {[#]} Rd3 $1 58. Rg2 $2 (58. Rxg5 Rb3 59. Ke1 (59. Rxe5 $2 Rxb2+ 60. Ke1 Rb3 61. Re6+ Ka5 $19)) 58... Rb3 59. Kd1 {intending Kc2.} c3 ({Weaker is} 59... Rxf3 60. Rxg5 c3 61. Kc2 $15) 60. bxc3 Rxc3 61. Rxg5 Rxf3 62. Rxe5 Rxa3 63. Re8 Rxh3 64. e5 Kc6 65. e6 Rb3 66. Kc2 $2 (66. Ra8 Re3 67. Ra6+ Kd5 68. Rb6) 66... Kd6 67. Kd2 a3 {[%cal Ba4a3,Ba3a2][%mdl 32]} 68. Kc2 Rb2+ 69. Kc3 b4+ 70. Kc4 a2 71. Kd4 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.13"]
[Round "4"]
[White "Navarrete Garcia, Alan"]
[Black "Fernandez Cardoso, Alexey"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2114"]
[BlackElo "2445"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 7,102,25,43,25,43,-12,-14,-18,-11,-19,-30,-35,-31,-33,-23,-40,12,25,27,31,29,28,58,52,43,48,43,58,77,72,76,56,50,60,216,189,300,292,302,298,280,270,308,254,266,261,336,345,354,351,343,336,363,157,364,295,286,280,258,174,173,173,167,156,139,173,140,99,144,163,139,50,52,50,44,51,134,103,99,29,18,30,41,0,0,0,0,0,0,-154,-171,-198,-200,-496,-496,-493,-486]} 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. Be2 b5 {LiveBook: 19 Games. B40: Sicilian: 2...e6, Unusual lines} (4... Nc6 5. d4 cxd4 6. Nxd4 Qc7 7. O-O Nf6 8. Be3 Bb4 9. Nxc6 bxc6 10. Qd4 c5 11. Qc4 O-O 12. Na4 d6 13. a3 Bd7 14. e5 Bb5 15. Qh4 dxe5 16. axb4 Bxe2 17. Rfe1 Bb5 18. Nxc5 Nd7 19. c4 {1-0 (31) Wei,Y (2725)-Karthikeyan,M (2578) Liaocheng 2017}) 5. a3 Bb7 6. d3 (6. O-O $14) 6... Nc6 $11 {The position is equal.} 7. O-O Qc7 8. Be3 Nf6 9. Qd2 Be7 10. Bf4 $146 (10. Rad1 O-O 11. d4 b4 12. axb4 cxb4 {0-1 (28) Lombardi,D (907)-Husemann,A (1880) LSS email 2012}) 10... d6 11. b4 Nd4 (11... e5 $15 12. Bg3 Nd4) 12. bxc5 Nxe2+ 13. Nxe2 Qxc5 14. a4 d5 15. e5 Nd7 $1 16. axb5 axb5 17. Ned4 Ba6 18. Be3 {aiming for Nxe6!} Qc8 19. Ra5 O-O 20. Rfa1 (20. Nxb5 Bd8 21. Na7 Bxa5 22. Qxa5 Bb7 $15) 20... Nc5 $2 (20... Qb7 $14) 21. Nxb5 $18 Bxb5 (21... Bb7 $142 22. Rxa8 Bxa8) 22. Rxa8 Qxa8 23. Rxa8 Rxa8 24. h3 Na4 25. Nd4 Be8 26. f4 g6 27. g4 Nc5 28. f5 Nd7 29. f6 (29. fxe6 fxe6 30. Nxe6 Nxe5) 29... Bf8 30. Nc6 (30. Nf3 $18) 30... Rc8 $2 (30... Nxf6 $16 {was worth a try.} 31. Na5 (31. exf6 Bxc6 32. Qc3 Rc8 $16) 31... Nd7) 31. Ne7+ Bxe7 32. fxe7 Nxe5 33. Kf2 {Threatens to win with Bd4.} f6 34. Bd4 {Black must now prevent Qf4.} Nd7 35. Bb2 g5 36. Kg3 Kf7 37. Ba3 Ne5 38. h4 $1 {[%cal Rh4g5]} h6 39. hxg5 (39. Bd6 $16) 39... hxg5 $14 40. Qh2 {[%cal Rh2h7]} Kg7 41. Qe2 Kf7 (41... Rc6 $14) 42. Bd6 Ng6 {[#]} 43. Qh2 ({Better is} 43. c4 $1 $16) 43... Kg7 $11 44. Qf2 e5 45. Bb4 {And now Qb6 would win.} d4 46. Qd2 $36 {[%mdl 2048] White is more active.} Nf4 47. Kf2 Bd7 48. c3 $2 (48. Qd1 $11) 48... Rh8 $17 {Hoping for ...Rh2+.} (48... Bxg4 49. cxd4 Rh8 50. Qc3 $16) 49. Kg1 {[#]} Bc6 $1 {Strongly threatening ...Rh1+.} ({Inferior is} 49... Bxg4 50. cxd4 Ne2+ 51. Kf2 Nxd4 52. Qc3 $11) 50. e8=Q $2 (50. e8=N+ Kg6 51. Nd6 Rh1+ 52. Kf2) 50... Rh1+ $19 (50... Rxe8 $2 51. cxd4 Rh8 52. d5 Bxd5 53. Qe3 $19) ({Less strong is} 50... Bxe8 51. Qa2 $17 (51. cxd4 $2 Bc6 52. d5 Bxd5 $19)) 51. Kf2 Bxe8 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Cordova, Emilio"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2645"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,89,0,12,0,0,0,0,0,0,0,0,-16,-20,-27,0,-28,-26,-31,-22,-36,0,-89,-77,-90,-91,-89,-25,-25,-24,-23,-19,-16,-12,-95,-17,-15,-18,-4,-5,-42,-45,-104,-106,-113,-121,-106,-94,-86,-69,-75,135,138,130,131,239,239,250,213,250,240,253,250,259,259,407,383,425,425,425,418,436,401]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 O-O 5. Nc3 d6 6. d4 Nc6 7. O-O a6 8. h3 Bd7 9. Be3 Rb8 10. a4 {E63: King's Indian: Fianchetto: Panno Variation with 7...a6} a5 {LiveBook: 3 Games} 11. Qc1 $146 (11. Qd2 Qc8 12. Kh2 Re8 13. Bh6 Bh8 14. d5 Nb4 15. e4 c6 16. Rac1 cxd5 17. cxd5 Qc4 {1-0 (34) Cordova,E (2530)-Larrea,M (2311) Mexico City 2010}) 11... Re8 12. d5 {The position is equal.} Nb4 $1 13. Rd1 Qc8 14. Kh2 e5 15. c5 dxc5 16. Bxc5 b6 17. Be3 c6 {[%cal Rc6d5]} 18. dxc6 Bxc6 19. Rd6 Re6 20. Nb5 (20. Rxe6 $11 {remains equal.} Qxe6 21. Ng5) 20... Bxb5 $1 $17 21. Rxe6 Qxe6 22. Ng5 Qd7 (22... Qb3 $17 23. Ra3 Qc2 24. axb5 h6) 23. axb5 $11 Rc8 24. Qd1 Qxb5 25. Qb3 Rf8 26. Bf3 {[#]} (26. Ne4 $11) 26... Nfd5 (26... e4 $1 $17 {[%cal Re4f3][%mdl 512]} 27. Nxe4 (27. Bxe4 Qxe2) 27... Nxe4 28. Bxe4 Qxe2) 27. Bd2 h6 $36 {[%mdl 2048] Black has some pressure.} 28. Ne4 Rd8 29. Be1 Kh7 30. Rd1 {[#]} ({Better is} 30. g4 $15) 30... a4 $1 $17 {[%cal Ra4b3]} 31. Rxd5 Rxd5 32. Qxb4 Qxb4 33. Bxb4 {And now Nf6+! would win.} Rd8 34. Nc3 {[#]} Bf8 $2 (34... Rd2 $1 $17 {[%cal Rd2b2]} 35. Ba3 f5) 35. Bxf8 $16 Rxf8 36. Nxa4 Rb8 (36... Rd8 $16) 37. b4 $18 {[%cal Bb2b4,Bb4b5][%mdl 32]} Kg7 38. Bc6 Kf6 39. e4 Ke7 40. g4 Kd6 41. b5 Kc7 (41... f6 {keeps fighting.} 42. Kg3 Ke7) 42. Nb2 Rd8 43. Nc4 f6 44. Ne3 Rd2 45. Kg2 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Macieja, Bartlomiej"]
[Black "Otero Acosta, Diasmany"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2529"]
[BlackElo "2438"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,97,14,23,0,6,0,0,0,0,0,9,11,47,24,31,42,105,106,111,99,105,99,102,102,108,91,92,92,100,99,131,128,120,107,128,129,156,141,475,328,318,329,339,302,324,330,499,328,328,324,337,333,319,337,344,344,368,343,367,366,359,343,435,426,422,424,631,616,772,754,711,656,1458,1384,1558,1542,2096,2031,29969,29946,29986,29986]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Nc3 a6 5. e4 b5 6. e5 Nd5 7. a4 e6 8. axb5 Nb6 9. Be2 Be7 {LiveBook: 10 Games. D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3} (9... Bb7 10. bxa6 Rxa6 11. Rxa6 Nxa6 12. Be3 Nb4 13. O-O Be7 14. Nd2 Qa8 15. f3 Bd5 16. Qc1 O-O 17. Nde4 {0-1 (36) Ponkratov,P (2607)-Alekseenko,K (2580) Khanty-Mansiysk 2016}) 10. Be3 Bb7 $146 (10... Bb4 11. O-O O-O 12. Ng5 h6 13. Nge4 Bxc3 14. bxc3 Bb7 15. Nc5 Bd5 16. bxa6 Qc8 17. Qd2 N6d7 18. Bxh6 gxh6 19. Qxh6 Nxc5 20. Qg5+ Kh7 21. Qh5+ Kg7 22. Qg5+ Kh7 23. Qh5+ Kg7 24. Qg5+ {½-½ (24) Brondum,E (2138)-Grabarczyk,M (2469) Ballerup 2009}) 11. bxa6 Nxa6 {[%cal Bb8a6,Ba6b4,Bb4c2][%mdl 32] The position is equal.} 12. Nd2 Nb4 {[#] White must now prevent ...Rxa1.} 13. O-O Rxa1 14. Qxa1 Nc2 15. Qa7 Nxe3 16. fxe3 Bg5 (16... Bc6 $14) 17. Nxc4 $16 ({Much weaker is} 17. Qxb7 $6 Bxe3+ 18. Kh1 Bxd2 $11) 17... Qa8 18. Qxa8+ Bxa8 19. Kf2 Nxc4 20. Bxc4 Ke7 21. Ra1 Rb8 22. b3 Bc6 23. g3 h5 24. h4 Bh6 25. Ra6 Bb7 26. Ra7 Kd7 27. Na4 $36 {[%mdl 2048] Nc5+ is the strong threat. White is on the roll.} Kc6 $2 {[%mdl 8192]} (27... Bc6 $16 28. Ra6 Bb7) 28. Be2 {[#] aiming for Bf3+.} Bc8 29. Bf3+ ({Weaker is} 29. Bxh5 Rxb3 30. Bf3+ Kb5 $16) 29... Kd7 30. Nc5+ ({But not} 30. Bxh5 Kd8 $18) 30... Kd8 31. Bxh5 f6 (31... g6 {was called for.}) 32. exf6 gxf6 33. Bf7 e5 34. dxe5 fxe5 35. Bc4 Bf5 36. Ra6 Rb6 37. Rxb6 cxb6 $18 {[%mdl 4096] Endgame KBB-KBN} 38. Na4 Kc7 39. Nc3 Kc6 40. Kf3 Bc2 41. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Bf8 (41... Bg6 $142 42. g5 Bh5+ 43. Kg3 Bg7) 42. g5 Be7 43. Kg4 Bb4 44. Nd5 Be1 45. Nf6 Bd1+ 46. Kf5 Bc2+ 47. e4 Bxh4 48. g6 Bxf6 49. Bd5+ 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Obregon Rivero, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "D18"]
[WhiteElo "2517"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,31,21,9,57,61,68,42,74,25,41,27,23,8]} 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 {[%cal Be2e3,Be3e4,Be4e5][%mdl 32]} e6 7. Bxc4 Bb4 8. O-O Nbd7 9. Qe2 O-O 10. e4 Bg6 11. Bd3 {LiveBook: 883 Games} Qe7 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2} (11... Bh5 12. e5 Nd5 13. Nxd5 cxd5 14. Qe3 Re8 15. Bd2 Qa5 16. Qe1 Bxd2 17. Qxd2 Qxd2 18. Nxd2 Nb8 19. Rfc1 Nc6 20. Bb5 Reb8 21. Nb3 a6 22. Bf1 {½-½ (56) Wojtaszek,R (2750)-Aronian,L (2780) Wijk aan Zee 2017}) 12. e5 Nd5 13. Bxg6 fxg6 14. Bd2 $146 (14. Bg5 Qf7 15. Bd2 a5 16. Nxd5 exd5 17. Bxb4 axb4 18. a5 Nb8 19. h3 {1-0 (48) Luzuriaga,N (2378)-Stratta,R (2271) ICCF email 2006}) 14... a5 15. Nxd5 cxd5 16. Rac1 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Ruiz Sanchez, Orlen"]
[Black "Della Morte, Pablo"]
[Result "1-0"]
[ECO "B61"]
[WhiteElo "2455"]
[BlackElo "2333"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,98,22,15,66,16,47,37,35,18,31,0,0,0,17,14,14,20,50,0,28,15,54,56,45,41,37,24,29,17,21,0,0,0,0,0,34,0,43,27,75,67,150,152,132,136,153,160,325,315,300,310,310,318,372,363,29997,29998,29998,0,437,97,689,0,1211,0,8,0,375,0,422,0,29994,29995,29998,0,8,0,1204,0,45,0,1196]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Rc8 8. Nxc6 {B61: Sicilian: Richter-Rauzer: 6...Bd7 7 Qd2} Bxc6 9. f3 e6 10. O-O-O {LiveBook: 9 Games} Be7 (10... a6 $1 $11) 11. h4 h6 12. Be3 a6 13. Kb1 d5 {[%cal Rd5e4]} 14. Qf2 $146 (14. exd5 Nxd5 15. Nxd5 {½-½ (15) Carlsson,P (2501)-Almeida Quintana,O (2500) Malaga 2008}) 14... Qc7 {[%cal Rd5e4]} 15. Bb6 Qb8 {[%cal Rd5e4]} 16. exd5 Nxd5 17. Nxd5 Bxd5 18. Bd3 O-O 19. f4 Bd6 20. Rhf1 Rc6 21. Bd4 f5 22. Rde1 Qc7 23. g3 b5 24. Re3 Rc8 25. Qd2 Rd8 26. Rfe1 b4 27. Qe2 Qf7 (27... Qa5 $5 28. b3 $8 Bc5 29. Bxc5 Qxc5 $11) 28. b3 {[%cal Re3e6]} Rdc8 29. h5 $1 (29. Bxa6 Rxc2 30. Qxc2 (30. Bxc8 Rxe2 31. R3xe2 Be4+ 32. Kb2 Qe8 $17) 30... Rxc2 31. Kxc2 Bc5 32. Bxc5 Qc7 $11) 29... Bc5 ({Black should play} 29... a5 $14) 30. Bxc5 $16 Rxc5 31. g4 (31. Bxa6 Rxc2 32. Qd1 (32. Bxc8 $2 Rxe2 33. R3xe2 Be4+ 34. Ka1 Qf6+ 35. Rb2 Kf7 $19) 32... Qa7 33. Rxe6 Bxe6 34. Rxe6 Qd4 $3 {[%mdl 512]} 35. Qxc2 (35. Qxd4 $2 Rc1+ 36. Kb2 R8c2#) (35. Re8+ $2 Kf7 36. Qxc2 Rxc2 37. Kxc2 Kxe8 $19) 35... Qg1+ 36. Kb2 Rxc2+ 37. Kxc2 Qxg3 $19) 31... fxg4 32. Qxg4 a5 $2 {[#]} (32... Rc3 $16 {was worth a try.} 33. f5 (33. Bxa6 Rxe3 34. Rxe3 Ra8 $11) 33... exf5 34. Qxb4 (34. Qxf5 Qxf5 35. Bxf5 Rxe3 36. Rxe3 Ra8 $14) (34. Bxf5 Rxe3 35. Rxe3 Rb8 $16) 34... a5 35. Qxa5 Be4) 33. f5 $1 $18 {[%cal Rf5e6]} exf5 34. Qxf5 ({Don't do} 34. Bxf5 $6 Bxb3 35. Re7 (35. Bxc8 Bxc2+ 36. Kb2 Qf6+ 37. Re5 Rxe5 38. Qc4+ Kf8 39. Rxe5 Qxe5+ 40. Kxc2 Qxh5 $16) 35... Qf8 $18) 34... Qxf5 35. Bxf5 Rd8 36. Re5 Kf7 $2 (36... g6 $18) 37. Bg6+ Kg8 38. Bf5 $2 (38. Re8+ Rxe8 39. Rxe8#) 38... Rf8 $2 {[%mdl 8192]} (38... Kf7 $1 $11 39. Bg6+ Kg8 40. Re8+ Rxe8 41. Rxe8#) 39. Rd1 $2 (39. Be6+ $18 {has better winning chances.} Bxe6 40. Rxc5) 39... Rd8 $2 {[%mdl 8192] [#]} (39... Bf3 $16 40. Be6+ (40. Rxc5 Bxd1 41. Be6+ Kh7 $16) 40... Kh7 41. Rxc5 Bxd1) 40. Rde1 $2 ({Better is} 40. Rdxd5 $1 $18 {[%mdl 512]} Rdxd5 (40... Rcxd5 41. Be6+) 41. Be6+ Kf8 42. Bxd5) 40... Rdc8 $2 {[%mdl 8192]} (40... Rf8 $11 41. Be4 Bxe4 42. Rxc5 Bg2 43. Rxa5 Bf3) 41. R5e3 $2 (41. Bxc8 $18 Rxc8 42. Rxd5) 41... Rf8 42. Re5 {Black must now prevent Be4.} Rd8 $2 {[%mdl 8192]} (42... Rfc8 $1 $11 {and Black has nothing to worry.} 43. Bxc8 Rxc8 44. Rxd5 Kf8 45. Rxa5 Kg8) 43. R5e2 $2 (43. Kb2 $18) 43... Rdc8 $2 {[%mdl 8192]} (43... Bf7 $11 {and Black stays safe.} 44. Bg6 Bxg6 45. hxg6 Kf8) 44. Re3 $2 (44. Bxc8 $18 Rxc8 45. Re5) 44... R8c7 $2 {[%mdl 8192]} (44... Rf8 $11 45. Re5 Rd8) 45. Bg6 {[%cal Re3e8]} Rc8 46. Bf5 $2 (46. Re8+ {mates} Rxe8 47. Rxe8#) 46... Rf8 47. Re5 $2 {[%mdl 8192]} (47. Bh3 $11) 47... Rfc8 48. R5e2 $2 (48. Bxc8 $18 Rxc8 49. Rxd5) 48... Rb8 49. Re5 $2 {[%mdl 8192]} (49. a4 $14 Bf7 50. Re5 Rxe5 51. Rxe5) 49... Rbc8 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Fernandez Cardoso, Alexey"]
[Black "Gonzalez Vidal, Yuri"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2445"]
[BlackElo "2534"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,43,4,0,0,49,29,49,30,41,29,37,26,42,43,40,20,43,27]} 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 Nb8 10. d4 Nbd7 11. c4 c6 12. Nc3 b4 {C95: Closed Ruy Lopez: Breyer Variation with 10 d4} 13. Na4 c5 14. d5 Re8 {LiveBook: 4 Games. The position is equal.} 15. Bc2 Bf8 $146 (15... Nf8 16. a3 a5 17. b3 Ng6 18. Nb2 Bd7 19. Ra2 h6 20. Nh2 {½-½ (41) Vallejo Pons,F (2716)-Baramidze,D (2605) Germany 2014}) 16. Kh2 g6 17. b3 Bg7 18. Nb2 a5 19. a3 Rb8 20. Ra2 Nf8 21. Bd2 Bd7 22. Qe2 {[%mdl 32768] Loss on time?} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Blanco Fernandez, Alvaro"]
[Black "Garcia Guerrero, Isaac Antonio"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2241"]
[BlackElo "2332"]
[Annotator "NA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:01:53]} c5 {[%emt 0:00:25]} 2. Nf3 {[%emt 0:00:11]} g6 {[%emt 0:00:09]} 3. d4 {[%emt 0:00:07]} cxd4 {[%emt 0:00:07]} 4. Nxd4 {[%emt 0:00:12]} Nc6 {[%emt 0:00:06]} 5. c4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:42]} 6. Nc3 {[%emt 0:00:12]} Nxd4 {[%emt 0:00:28]} 7. Qxd4 {[%emt 0:00:10]} d6 {[%emt 0:00:11]} 8. Bg5 {[%emt 0:00:08]} Bg7 {[%emt 0:00:18]} 9. Be2 {[%emt 0:00:43]} O-O {[%emt 0:00:22]} 10. Qd2 {[%emt 0:00:13]} a5 {[%emt 0:00:23]} 11. h4 {[%emt 0:03:13]} a4 {[%emt 0:06:58]} 12. Rc1 {[%emt 0:03:58]} Qa5 {[%emt 0:02:27]} 13. h5 {[%emt 0:03:03]} Be6 {[%emt 0:04:35]} 14. hxg6 {[%emt 0:01:25]} fxg6 {[%emt 0:02:28]} 15. f3 {[%emt 0:01:19]} Qe5 {[%emt 0:19:00]} 16. Bf4 {[%emt 0:06:47]} Qa5 {[%emt 0:01:04]} 17. Be3 {[%emt 0:04:42]} Nh5 {[%emt 0:13:43]} 18. Nd5 {[%emt 0:10:36]} Qxd2+ {[%emt 0:05:14]} 19. Kxd2 {[%emt 0:00:16]} Bxd5 {[%emt 0:00:40]} 20. cxd5 {[%emt 0:00:18]} Ng3 {[%emt 0:01:09]} 21. Rhd1 {[%emt 0:00:30]} Nxe2 {[%emt 0:01:08]} 22. Kxe2 {[%emt 0:00:02]} Rfc8 {[%emt 0:01:40]} 23. Rxc8+ {[%emt 0:01:30]} Rxc8 {[%emt 0:00:14]} 24. Rc1 {[%emt 0:00:03]} Rxc1 {[%emt 0:10:09]} 25. Bxc1 {[%emt 0:00:01]} b5 {[%emt 0:00:11]} 26. Kd3 {[%emt 0:00:07]} Kf7 {[%emt 0:00:12]} 27. Kc2 {[%emt 0:00:11]} Bd4 {[%emt 0:00:08]} 28. b3 {[%emt 0:00:10]} axb3+ {[%emt 0:00:09]} 29. Kxb3 {[%emt 0:00:22]} Bc5 {[%emt 0:00:29]} 30. Bg5 {[%emt 0:05:05]} e6 {[%emt 0:02:17]} 31. a4 {[%emt 0:02:29]} bxa4+ {[%emt 0:00:44]} 32. Kxa4 {[%emt 0:00:03]} exd5 {[%emt 0:00:28]} 33. exd5 {[%emt 0:00:01]} Ke8 {[%emt 0:00:41]} 34. Kb5 {[%emt 0:00:02]} Kd7 {[%emt 0:00:09]} 35. Kc4 {[%emt 0:00:02]} Ke8 {[%emt 0:00:39]} 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Gonzalez Arroyo, Lenin"]
[Black "Hernandez Guerrero, Gilberto"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2233"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,70,0,0,-28,31,-1,-9,-48,-33,-63,0,-93,-70,-170,-155,-171,-155,-163,-166,-198,-143,-293,-291,-275,-287,-280,-266,-283,-274,-268,-249,-281,-229,-287,-228,-239,-241,-364,-363,-368,-375,-378,-366,-330,-331,-346,-312,-355,-358,-414,-386,-402,-380]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be2 Nf6 6. Nc3 Qc7 7. O-O Nc6 8. Be3 Bb4 9. Nxc6 bxc6 10. Bd3 d5 {LiveBook: 9 Games} 11. Bg5 {B49: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 7 Be2} Bd6 ({Better is} 11... Bxc3 $11 12. bxc3 Nxe4 13. Bxe4 dxe4) 12. exd5 $146 (12. Bxf6 gxf6 13. Qh5 Bb7 14. Rab1 Rg8 15. b4 O-O-O 16. Na4 Rg5 17. Qh3 Rdg8 {1-0 (34) Ostrovskiy,A (2445)-Borisova,E (2275) Minsk 2008}) 12... cxd5 13. h3 {The position is equal.} Bb7 14. Re1 h6 (14... Bh2+ $15 15. Kh1 Be5) 15. Bd2 (15. Bxf6 $1 $11 gxf6 16. Ne2) 15... e5 16. Bf4 ({Only move:} 16. Na4 $1 $15) 16... O-O $19 17. Bg3 Rad8 $36 {[%mdl 2048] Black is in control.} 18. Bf1 d4 19. Ne2 Ne4 (19... Bb4 $19 {And now ...Rfe8 would win.} 20. c3 dxc3) 20. f3 (20. Bh4 $17 {was necessary.}) 20... Nxg3 21. Nxg3 f5 {Strongly threatening ...e4.} 22. Qd3 e4 23. Qc4+ Kh7 24. Qxc7 Bxc7 25. Ne2 Bb6 26. Kh2 exf3 27. gxf3 Bxf3 {White must now prevent ...Rc8.} 28. Nc1 (28. Ng3 {was called for.}) 28... Rf6 29. Bg2 Bc7+ 30. Kh1 Bxg2+ 31. Kxg2 Rg6+ 32. Kf1 Rg3 33. Re7 Bf4 {Black is winning.} ({Stronger than} 33... Rxh3 34. Rxc7 Re8 35. Ne2 $11) 34. Ne2 Rxh3 35. Kg2 Re3 ({Less strong is} 35... Rh2+ 36. Kg1 Rh4 37. Nxf4 Rxf4 38. Rd1 $19) 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "5"]
[White "Carreto Nieto, Geovanni"]
[Black "Leon Valdez, Jony Wilson"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2194"]
[Annotator "NA"]
[PlyCount "54"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:07:55]} e6 {[%emt 0:00:08]} 2. d4 {[%emt 0:00:06]} d5 {[%emt 0:00:04]} 3. Nc3 {[%emt 0:00:07]} Nf6 {[%emt 0:00:04]} 4. e5 {[%emt 0:00:19]} Nfd7 {[%emt 0:00:05]} 5. f4 {[%emt 0:00:05]} c5 {[%emt 0:00:06]} 6. Nf3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:04]} 7. Be3 {[%emt 0:00:06]} cxd4 {[%emt 0:00:09]} 8. Nxd4 {[%emt 0:00:08]} Bc5 {[%emt 0:00:06]} 9. Qd2 {[%emt 0:00:11]} O-O {[%emt 0:00:06]} 10. O-O-O {[%emt 0:00:40]} a6 {[%emt 0:00:05]} 11. h4 {[%emt 0:00:38]} Nxd4 {[%emt 0:03:05]} 12. Bxd4 {[%emt 0:00:04]} b5 {[%emt 0:00:08]} 13. h5 {[%emt 0:04:18]} b4 {[%emt 0:05:00]} 14. Na4 {[%emt 0:00:09]} Bxd4 {[%emt 0:02:35]} 15. Qxd4 {[%emt 0:00:08]} Rb8 {[%emt 0:06:26]} 16. b3 {[%emt 0:21:27]} Bb7 {[%emt 0:06:34]} 17. Rh3 {[%emt 0:33:35]} Bc6 {[%emt 0:08:14]} 18. Nb2 {[%emt 0:00:09]} Bb5 {[%emt 0:01:28]} 19. Nd3 {[%emt 0:01:47]} a5 {[%emt 0:06:11]} 20. Kb2 {[%emt 0:11:09]} Rc8 {[%emt 0:10:54]} 21. Rc1 {[%emt 0:01:47]} Qe7 {[%emt 0:14:17]} 22. c3 {[%emt 0:06:05]} bxc3+ {[%emt 0:02:15]} 23. Rxc3 {[%emt 0:00:03]} a4 {[%emt 0:01:27]} 24. bxa4 {[%emt 0:01:22]} Rxc3 {[%emt 0:04:14]} 25. Qxc3 {[%emt 0:00:25]} Nb6 {[%emt 0:00:55]} 26. Ka1 {[%emt 0:04:54]} Nxa4 {[%emt 0:00:09]} 27. Qd2 {[%emt 0:00:22]} Qa7 {Kb2 Qe7+} 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Obregon Rivero, Juan Carlos"]
[Black "Fernandez Cardoso, Alexey"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2529"]
[BlackElo "2445"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,14,45,51]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 Bf5 {LiveBook: 1228 Games} 8. Bg5 $146 Ne4 9. Nxe4 Bxe4 10. d5 Na5 11. b3 c5 12. Rc1 Re8 13. Qd2 a6 14. Bh3 Bxf3 15. exf3 b5 16. Rfe1 bxc4 17. bxc4 {1-0 (62) Aronian,L (2785)-Fressinet,L (2672) Doha 2016} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Cordova, Emilio"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2517"]
[BlackElo "2645"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,22,18,14]} 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. Nc3 d6 7. d4 cxd4 8. Qxd4 a6 9. Bg5 Be7 10. Bxf6 Bxf6 11. Qf4 O-O {LiveBook: 174 Games} 12. Rfd1 $146 Be7 13. Ne4 Bxe4 14. Qxe4 Ra7 15. Nd4 Rc7 16. b3 Qc8 17. e3 Rc5 18. a4 d5 19. cxd5 Rxd5 20. Qg4 Rg5 21. Qe2 Rd8 22. h4 Rc5 {½-½ (32) Blomqvist,E (2567)-Istratescu,A (2596) London 2016} 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Macieja, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2499"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,33,31,37,37,37,32,37,30]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. d4 cxd4 9. cxd4 d5 10. exd5 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Nxd5 11. Nc3 e6 12. h3 Bxf3 13. Qxf3 Be7 14. Nxd5 Qxd5 {LiveBook: 3 Games. White is slightly better.} 15. Qxd5 exd5 16. Be3 O-O 17. g3 $146 (17. Be2 Bf6 {½-½ (83) Antipov,M (2569)-Moiseenko,A (2692) Berlin 2015}) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Leon Valdes, Jony Wilson"]
[Black "Tello Chavez, Isaac Valent"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2363"]
[BlackElo "2286"]
[Annotator "ChessBase"]
[PlyCount "133"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:01:52]} d5 {[%emt 0:00:25]} 2. Nf3 {[%emt 0:00:07]} Nf6 {[%emt 0:00:42]} 3. g3 {[%emt 0:00:05]} Bf5 {[%emt 0:03:12]} 4. Bg2 {[%emt 0:00:08]} e6 {[%emt 0:00:22]} 5. O-O {[%emt 0:00:09]} Nbd7 {[%emt 0:02:06]} 6. Nh4 {[%emt 0:04:59]} Bg4 {[%emt 0:03:22]} 7. h3 {[%emt 0:00:28]} Bh5 {[%emt 0:00:36]} 8. c4 {[%emt 0:02:31]} c6 {[%emt 0:02:25]} 9. cxd5 {[%emt 0:00:22]} cxd5 {[%emt 0:01:24]} 10. Nc3 {[%emt 0:04:18]} Be7 {[%emt 0:06:04]} 11. g4 {[%emt 0:05:42]} Bg6 {[%emt 0:01:55]} 12. Nxg6 {[%emt 0:00:27]} hxg6 {[%emt 0:00:21]} 13. Bf4 {[%emt 0:01:19]} a6 {[%emt 0:02:19]} 14. Qd3 {[%emt 0:04:18]} O-O {[%emt 0:03:05]} 15. Rfc1 {[%emt 0:03:38]} Rc8 {[%emt 0:05:31]} 16. Rc2 {[%emt 0:01:55]} Nb6 {[%emt 0:03:13]} 17. Rac1 {[%emt 0:05:23]} Bd6 {[%emt 0:05:32]} 18. Bg5 {[%emt 0:12:02]} Qd7 {[%emt 0:05:30]} 19. Nb1 {[%emt 0:07:58]} Rxc2 {[%emt 0:11:25]} 20. Rxc2 {[%emt 0:00:10]} Rc8 {[%emt 0:00:21]} 21. Rxc8+ {[%emt 0:01:15]} Qxc8 {[%emt 0:02:25]} 22. Qc3 {[%emt 0:02:14]} Qc4 {[%emt 0:02:25]} 23. Qxc4 {[%emt 0:00:59]} Nxc4 {[%emt 0:00:08]} 24. Bc1 {[%emt 0:01:27]} Kf8 {[%emt 0:03:21]} 25. b3 {[%emt 0:00:47]} Na5 {[%emt 0:01:51]} 26. e3 {[%emt 0:01:30]} Nc6 {[%emt 0:00:23]} 27. Kf1 {[%emt 0:00:44]} Ke7 {[%emt 0:01:14]} 28. Ke2 {[%emt 0:00:17]} Nd7 {[%emt 0:02:17]} 29. Bb2 {[%emt 0:00:57]} Nb4 {[%emt 0:02:38]} 30. a3 {[%emt 0:00:13]} Nc6 {[%emt 0:00:11]} 31. f3 {[%emt 0:03:51]} Bc7 {[%emt 0:04:53]} 32. Kd3 {[%emt 0:02:31]} f6 {[%emt 0:02:29]} 33. Nc3 {[%emt 0:04:43]} Na5 {[%emt 0:03:12]} 34. Kc2 {[%emt 0:00:12]} Nc6 {[%emt 0:00:19]} 35. Bc1 {[%emt 0:02:21]} g5 {[%emt 0:00:57]} 36. Bf1 {[%emt 0:02:18]} Bd6 {[%emt 0:02:27]} 37. Kd3 {[%emt 0:05:19]} b5 {[%emt 0:02:35]} 38. Kd2 {[%emt 0:02:42]} Nb6 {[%emt 0:00:43]} 39. Bb2 {[%emt 0:02:15]} Na5 {[%emt 0:00:19]} 40. Kc2 {[%emt 0:00:20]} Nc6 {[%emt 0:00:12]} 41. a4 {[%emt 0:01:54]} b4 {[%emt 0:03:15]} 42. Nd1 {[%emt 0:00:34]} a5 {[%emt 0:00:41]} 43. Bb5 {[%emt 0:00:43]} Na7 {[%emt 0:00:17]} 44. Ba6 {[%emt 0:00:20]} Bg3 {[%emt 0:01:47]} 45. Bc1 {[%emt 0:00:09]} Kd6 {[%emt 0:00:39]} 46. Kd3 {[%emt 0:01:39]} Nd7 {[%emt 0:01:19]} 47. e4 {[%emt 0:04:02]} Nc6 {[%emt 0:01:12]} 48. Bb5 {[%emt 0:01:26]} Ne7 {[%emt 0:00:23]} 49. Ne3 {[%emt 0:01:41]} Nf8 {[%emt 0:00:53]} 50. Ng2 {[%emt 0:01:56]} Nfg6 {[%emt 0:00:38]} 51. Be3 {[%emt 0:01:01]} Nf4+ {[%emt 0:02:24]} 52. Nxf4 {[%emt 0:00:33]} Bxf4 {[%emt 0:01:42]} 53. e5+ {[%emt 0:02:06]} Kc7 {[%emt 0:02:23]} 54. Bxf4 {[%emt 0:01:26]} gxf4 {[%emt 0:00:02]} 55. exf6 {[%emt 0:00:38]} gxf6 {[%emt 0:00:03]} 56. h4 {[%emt 0:00:13]} Kd8 {[%emt 0:01:24]} 57. Ke2 {[%emt 0:00:19]} Ng6 {[%emt 0:00:57]} 58. h5 {[%emt 0:00:06]} Nh8 {[%emt 0:00:06]} 59. Kf2 {[%emt 0:00:35]} Ke7 {[%emt 0:00:13]} 60. Bd3 {[%emt 0:00:40]} Kf8 {[%emt 0:01:51]} 61. Ke2 {[%emt 0:00:39]} Kg7 {[%emt 0:00:25]} 62. Ba6 {[%emt 0:00:25]} Nf7 {[%emt 0:01:55]} 63. Bc8 {[%emt 0:00:15]} Nd8 {[%emt 0:00:22]} 64. Bd7 {[%emt 0:00:15]} Kh6 {[%emt 0:00:18]} 65. Kd3 {[%emt 0:00:51]} Kg5 66. Ke2 e5 67. Bc8 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Diaz Rosas, Julio Cesar"]
[Black "Cofre Archibold, Nestor"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2312"]
[BlackElo "2256"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,106,39,62,23,20,0,-8,-1,0,0,0,0,20,32,39,-16,0,0,0,-33,0,-50,-32,-56,-16,-118,-141,-152,-166,-184,-127,-119,-120,-200,-149,-213,-229,-219,-222,-302,-307,-443,-448,-446,-444,-422,-443,-417,-430,-437,-264,-397,-378,-362,-375,-462,-319,-439,-357,-368,-392,-388,-123,-138,-131,-328,-328,-302,-321,-299,-289,-306,-156,-170,0,-277,-197,-798,-777,-751,-90,-96,0,0,0,0,0]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. Qe2 c6 9. Rd1 Qc7 10. Ba2 {C41: Philidor Defence} h6 (10... Nb8 11. h3 Na6 12. Be3 Nd7 13. Re1 exd4 14. Bxd4 Ndc5 15. Bc4 Re8 16. Rad1 h6 17. Nd2 Bf8 {1-0 (44) Najer,E (2659)-Jobava,B (2701) Moscow 2017}) 11. h3 Nh7 {[%cal Bf6h7,Bh7g5,Bg5e6,Be6d4][%mdl 32] LiveBook: 3 Games} 12. dxe5 $146 {White is slightly better.} (12. Be3 Ng5 13. Nd2 Nb6 14. f4 exf4 15. Bxf4 Be6 16. Bxg5 Bxg5 17. Bxe6 fxe6 18. Nf3 Bf4 19. Qd3 d5 {½-½ (19) Vuckovic,B (2509)-Solak,D (2557) Vrnjacka Banja 2005}) 12... dxe5 13. Nh2 Nc5 14. Be3 b6 15. Rd2 Ng5 16. Rad1 Nge6 17. Qh5 Bg5 18. Nf1 (18. Bxg5 $14 Nxg5 19. Rd6) 18... g6 19. Qf3 Kg7 20. Re1 Qe7 21. Nh2 {[#]} Nd4 $1 $36 {[%mdl 2560] Black has good play.} 22. Qd1 (22. Bxd4 Bxd2) 22... Rd8 23. Ng4 (23. f4 $11 Bh4 24. Rf1) 23... Bxg4 $17 24. hxg4 Bxe3 25. Rxe3 Qg5 ({Better is} 25... Ra7 $19 26. Bc4 Rad7) 26. Bc4 Rd7 27. Bd3 (27. Nb1 $17 Rad8 28. c3) 27... Rad8 28. g3 (28. Nb1 $17 {is a better defense.}) 28... Rd6 $19 29. Kg2 R8d7 30. b3 Qd8 31. Kf1 {[#]} (31. Nb1 {was called for.}) 31... Ndxb3 $1 {[%mdl 512]} 32. cxb3 Nxd3 (32... Rxd3 33. Rexd3 Rxd3 34. Rxd3 Qxd3+ 35. Qxd3 Nxd3 36. Nb1 $19) 33. Qb1 Nc5 34. Rxd6 Rxd6 35. Kg2 Rd3 36. Nd5 (36. Rxd3 $142 Nxd3 37. Ne2) 36... Rxe3 (36... cxd5 $2 37. Rxd3 Nxd3 38. Qxd3 $19) 37. Nxe3 Qd4 38. Kf3 Ne6 39. Qc2 Qa1 40. Kg2 Nd4 41. Qd3 {[#]} Qa3 $2 (41... b5 $1 $19 {Strongly threatening ...Qa2.} 42. axb5 cxb5) 42. Nc4 $17 Qc5 43. Qe3 $2 (43. f4 $17 {was forced.}) 43... b5 $19 44. axb5 cxb5 45. Nxa5 Qb4 46. Nb7 Qe7 (46... Qxb3 47. Qxb3 Nxb3 48. Kf3 $17) ({Black should play} 46... Nxb3 $19 47. Nd6 Qxd6 48. Qxb3 b4) 47. Na5 $17 Qb4 (47... Qc5 $142 48. Qd2 b4) 48. Nb7 $19 Nc2 ({Much less strong is} 48... Qxb3 49. Qxb3 Nxb3 50. Kf3 $17) 49. Qc5 $2 (49. Qe2 Qxb3 50. Nd6) 49... Qxe4+ 50. Kg1 Nd4 $2 ({Less strong is} 50... Qxb7 51. Qxc2 Qf3 52. Qc5 $17) (50... Ne1 $19 {[%csl Ge1][%cal Re4g2] has better winning chances.} 51. Kf1 Nd3) 51. Nd6 $17 {[#]} Qe2 ({Stronger than} 51... Nxb3 52. Nxe4 Nxc5 53. Nxc5 $16) ({Black should try} 51... Nf3+ $1 $17 52. Kh1 Qa8 53. Qxb5 Nd4+ 54. Qb7 Qxb7+ 55. Nxb7 Nxb3) 52. Ne8+ $11 Kg8 {And now ...Qe1+ would win.} 53. Nf6+ Kg7 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Fernandez Garcia, Miguel Angel"]
[Black "Diaz Hernandez, Heriberto"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "2302"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "28"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,28,0,0,0,-162,-162,-192,-202,-230,-246,-229,-214,-1627,-1600,-29988,-29989,-1602,-1600,-1600,-1600]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 {[%cal Bg8f6,Bf6e4,Be4c3][%mdl 32]} 4. Bg5 dxc4 5. e3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 6. a4 {LiveBook: 6 Games} b4 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3} 7. Na2 $2 {[#]} (7. Nb1 $1 $11) (7. Nb1 Ba6 8. Bxf6 exf6 9. Nf3 Be7 10. Be2 O-O 11. Qc2 c5 {½-½ (11) Vesely,P (2577)-Antonenko,V (2524) ICCF email 2005}) 7... Ne4 $1 $19 {[%cal Re4g5]} 8. Bf4 {[#]} Qa5 $1 {Black is clearly better.} 9. Bxc4 $146 (9. Qc1 c3 10. bxc3 bxc3 11. Qc2 Bf5 12. Bd3 Nd6 13. Bxf5 Nxf5 14. Nxc3 {½-½ (34) Nguyen,B-Bui,D (1911) Bac Giang 2016}) 9... b3+ $1 10. Nc3 Nxc3 11. Qxb3 $2 (11. Qd2 e5 12. Bxe5) 11... Ne4+ 12. Ke2 Bg4+ 13. Kd3 Nxf2+ 14. Kc2 Bf5+ 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Salazar Farias, Luis German"]
[Black "Lopez Raygoza, Luis Albert"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2296"]
[BlackElo "2250"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,110,14,0,28,0,0,0,0,-4,75,-104,0,-35,-31,-69,-27,-16,2,-26,-30,-24,-29,-29,-24,-49,-49,-71,-63,-97,0,-21,0,-3,0,0,-4,-20,5,4,3,3,3,0,15,7,14,13,15,17,24,18,28,24,26,26,51,18,19,-522,15,15,15,15,15,15,15,15,43,43,43,43,51,51,51,51,51,43,47,43,43,0,51,43,43,43,46,43,46,46,46,46,46,0,50,43,51]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 a6 7. Bb3 Ba7 8. h3 O-O 9. Nf1 Ne7 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 10. Bg5 (10. Ng3 Ng6 11. O-O Be6 12. Bc2 c5 13. Re1 h6 14. Bd2 Qd7 15. Qc1 Rfe8 16. a4 a5 17. c4 {½-½ (26) Wei,Y (2706)-Bu,X (2698) Shenzhen 2016}) 10... Ng6 11. Nh4 Nf4 {Threatens to win with ...Nxe4!The position is equal.} 12. Qf3 Ne6 (12... a5 $11) 13. Be3 $146 {[#]} (13. Bxf6 $1 $16 Qxf6 14. Qxf6 gxf6 15. Ne3) (13. Bxf6 Qxf6 14. Qxf6 gxf6 15. Ne3 Nf4 16. O-O-O Bxe3+ 17. fxe3 {1-0 (61) Sukandar,I (2319)-Pourkashiyan,A (2335) Sharjah 2014}) 13... Nc5 (13... Bxe3 $1 $17 14. Nxe3 {[#]} Nxe4 $1 {[%mdl 512]} 15. dxe4 (15. Qxe4 Nc5 16. Qf3 Qxh4 $17) 15... Qxh4) 14. Bxc5 Bxc5 15. O-O-O Ne8 16. Nf5 Bxf5 17. exf5 c6 18. d4 exd4 19. cxd4 Ba7 20. Ne3 d5 21. g4 Nd6 22. h4 Qe7 ({Black should try} 22... Re8 $17 23. g5 Nb5) 23. Bc2 $11 Nb5 24. f6 $1 {[%cal Rf6e7]} Qxf6 25. Qxf6 gxf6 26. Nf5 Bb8 27. g5 Bf4+ 28. Kb1 Nd6 ({Not} 28... fxg5 $2 29. hxg5 Rae8 30. Rh4 $18) 29. gxf6 Nxf5 30. Rhg1+ Kh8 {White must now prevent ...Nd6.} 31. Bxf5 {White wants to mate with Rg7.} Rg8 32. Kc2 Raf8 33. Kd3 Bc7 34. Rg5 Rxg5 35. hxg5 {[%mdl 4096] Endgame And now Rh1 would win. KRB-KRB} Rg8 36. Rh1 {[%csl Gf5][%cal Rh1h7]} Rxg5 37. Rxh7+ Kg8 {[#]} 38. Rg7+ $1 {[%mdl 512]} Rxg7 39. fxg7 {KB-KB} b6 40. Bc8 a5 41. Bb7 Kxg7 42. Bxc6 Kf6 43. Bxd5 Ke7 44. Kc4 f6 45. Be4 Kd6 46. f4 Bd8 47. Kb5 Kc7 48. Kc4 Kd6 $1 49. a4 Be7 50. Bf5 Bd8 51. Kd3 Be7 52. Ke4 Bd8 53. Bc8 Bc7 54. Kf5 Ke7 55. Bb7 Bd8 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "6"]
[White "Benitez Lozano, Javier"]
[Black "Ruiz Sanchez, Orlen"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2270"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 8,67,35,27,45,21,14,20,15,5,54,48,42,45,35,47,58,54,45,68,125,94,79,79,123,131,164,290,389,388,382,381,389,393,706,700,697,686,669,647,829,826,817,749,746,749,727,441,436,436,417,417,433,426,574,574,554,559,926,642,725,700]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} 6. Bd3 e6 7. c3 b5 {The position is equal.} 8. a4 (8. Bc2 c4 9. a4 Bb7 10. d4 cxd3 11. Bxd3 bxa4 12. Qxa4 Be7 13. h3 O-O 14. Be3 Qc7 15. Nbd2 Rfb8 16. Qa5 Bd8 17. Qxc7 Bxc7 18. b4 {½-½ (18) Nakamura,H (2785)-Vachier Lagrave,M (2796) Sharjah 2017}) 8... c4 9. Bf1 Bb7 10. axb5 $146 (10. d3 bxa4 11. Qxa4 cxd3 12. Bxd3 Be7 13. Be3 {½-½ (31) Vlasak,L (2356)-Nguyen,T (2429) Prague 2016}) 10... axb5 11. Rxa8 Qxa8 12. Na3 Bxe4 13. Nxb5 Qc8 (13... Bxf3 $14 14. gxf3 Qc6) 14. Qa4 Bxf3 15. gxf3 d5 16. b3 {[%cal Rb3c4]} cxb3 17. Ba3 (17. Qxb3 $6 Qd8 $14) 17... Be7 18. Nd6+ ({Weaker is} 18. Qxb3 Kf8 $16) 18... Bxd6 19. Bxd6 Ng8 20. Rb1 {[%cal Be1b1,Bb1b3,Bb3b7][%mdl 32]} ({Resist} 20. Qxb3 Ne7 21. Bb5 Qa8 22. Bxe7 Kxe7 23. Qb4+ Kd8 $18) 20... f5 $2 {[#]} (20... Ne7 21. Rxb3 O-O 22. Bxe7 Nc5 23. Bxc5 Qxc5) 21. Ba6 $18 ({Less strong is} 21. Qxb3 Kf7 22. Ra1 Ngf6 $16) 21... Qd8 22. Rxb3 Kf7 23. Rb7 Qg5+ 24. Kf1 Ngf6 25. h4 Qxd2 26. Rxd7+ Kg6 27. h5+ Nxh5 28. Re7 Qc1+ 29. Kg2 Qg5+ 30. Kh2 {White is clearly winning.} h6 31. Rxe6+ Kh7 32. Bd3 Rc8 33. Qg4 g6 {[#]} 34. Rxg6 $1 {[%mdl 512]} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Cordova, Emilio"]
[Black "Obregon Rivero, Juan Carlos"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2645"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "155"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,155,45,41,45,41,45,20,26,25,36,29,44,31,45,33,27,-10,0,-29,-25,-19,-8,-21,22,5,21,-4,-9,-35,-36,-47,-41,-27,-16,-94,0,0,0,0,0,0,0,0,18,18,18,15,14,0,18,12,12,12,39,5,53,55,55,0,55,36,50,50,56,12,56,17,74,81,81,74,162,0,289,307,504,408,548,18,18,18,18,10,49,59,69,30,24,0,0,0,0,0,0,0,38,42,100,97,96,91,102,93,100,99,141,134,130,127,243,102,95,57,113,101,72,90,102,102,97,35,854,823,1509,1180,1616,1322,1737,2220,2162,1502,29960,4982]} 1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nc6 7. Nc3 Bg4 8. h3 Bxf3 9. Bxf3 Nd7 10. e3 e5 11. d5 Ne7 12. e4 f5 13. Bd2 Nf6 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} 14. Rc1 Qd7 15. Kg2 Rf7 {The position is equal.} 16. b4 a5 $146 (16... Raf8 17. Bg5 h6 18. Bxf6 Rxf6 19. c5 h5 20. c6 bxc6 21. dxc6 {1-0 (41) Reshevsky,S (2565)-Popovych,O (2415) New York 1972}) 17. a3 h6 18. Qc2 g5 19. Qd3 f4 20. g4 Ng6 21. Rg1 Nh4+ 22. Kf1 axb4 23. axb4 h5 24. Bd1 hxg4 25. Bxg4 Nxg4 26. Rxg4 Bf6 27. c5 Ra3 28. Ke2 {[%cal Bf1e2,Be2d1,Bd1c2,Bc2b3][%mdl 32]} Rh7 29. f3 (29. c6 $11 Qc8 30. Rb1) 29... b6 (29... Kf8 $17) 30. c6 $11 Qc8 31. Rh1 Kf7 32. Bc1 Ra1 33. Kd1 Ng6 34. Kc2 Qh8 35. Qf1 Qa8 36. Kb3 Rh8 37. Rgg1 Nh4 38. Qe2 Qc8 39. Rf1 Ra8 40. Bb2 Ng6 41. Qg2 (41. Nb5 $1 $14) 41... Rh4 ({Black should play} 41... Nh4 $11 42. Qe2 Bd8) 42. Ra1 Rxa1 43. Bxa1 Qa6 44. Bb2 {[%cal Ba1b2,Bb2c1,Bc1d2,Bd2e1,Be1f2][%mdl 32]} Bd8 45. Bc1 Qc8 (45... Be7 $11) 46. Bd2 $16 Rh8 47. Be1 Qa6 (47... Kg7 $16) 48. Qa2 $2 (48. Qg4 $18) 48... Qc8 $2 {[%mdl 8192]} (48... Qxa2+ $11 {and Black has nothing to worry.} 49. Kxa2 Ne7) 49. Qa7 $1 $18 Be7 $2 (49... Kg7 50. Bf2 Kf6) 50. Bf2 Kf6 51. Qb7 $2 (51. Nb5 $18) 51... Qxb7 $1 $11 52. cxb7 {Strongly threatening Ra1.} Rb8 53. h4 Rxb7 54. hxg5+ Kg7 55. Nb5 (55. Kc4 $5 {is interesting.} Ra7 56. Kb5 Ra3 57. Be1 Bxg5 58. Kc6) 55... Bxg5 56. Rc1 Bd8 57. Ra1 Bh4 58. Bg1 Be7 59. Kc4 Kf7 60. Kd3 {[%mdl 1024] White has compensation.} Bd8 (60... Nf8 $1 $14) 61. Ra8 $16 Bh4 62. Ke2 Ne7 63. Na7 Ng6 64. Nc6 Nf8 65. Bf2 Bf6 66. Kd3 Nd7 {[#]} (66... Kg7 $16) 67. Kc4 (67. Rd8 $1 $18 {[%cal Rd8d7][%mdl 512] and the rest is easy.} Nf8 (67... Bxd8 68. Nxd8+) 68. Kc4) 67... b5+ 68. Kd3 Kg7 (68... Kg6 $14) 69. Rc8 $36 {[%mdl 2048] White is really pushing.} Nb6 70. Bxb6 $1 cxb6 {[%mdl 4096] Endgame KRB-KRN} 71. Ra8 Kg6 {[#]} 72. Ra7 ({White should try} 72. Na7 $1 $16) 72... Rxa7 $4 {[%mdl 8192]} (72... Rf7 $14) 73. Nxa7 $14 {KB-KN} Kh5 74. Nc8 ({Not} 74. Nxb5 Be7 $18) 74... Kg6 75. Kc3 Kh5 76. Nxd6 Kh4 77. Kd3 Kh3 78. Nxb5 (78. Ne8 $142 Bg5 79. d6 Kg3 80. Ke2 Kh4 81. Nc7 Kh3 82. d7 Kh4 83. Ne6) 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Macieja, Bartlomiej"]
[Black "Benitez Lozano, Javier"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2529"]
[BlackElo "2270"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,101,9,12,0,19,12,11,56,61,29,30,0,0,0,0,0,0,0,39,44,42,42,52,32,29,28,57,31,41,28,22,20,23,10,17,18,20,10,17,5,12,11,11,18,38,33,39,47,67,58,166,140,279,272,356,355,419,372,371,318,360,240,341,328,395,402,393,386,385,385,437,373,372,372,741,508,755,736,647,600,6479,6109,5322,5099]} 1. Nf3 Nf6 2. c4 b6 3. d4 e6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. Qc2 c5 8. d5 exd5 9. Ng5 h6 10. h4 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7} Na6 {LiveBook: 4 Games} 11. cxd5 (11. Nxd5 $5 {looks sharper.} Bxd5 12. cxd5 Bd6 13. Ne4 Nb4 14. Qd1) 11... Nb4 (11... hxg5 $6 12. hxg5 Nb4 13. Qb1 $16) 12. Qd1 {The position is equal.} hxg5 (12... Na6 $5 {looks sharper.} 13. Nh3 Nc7 14. Nf4 d6 15. a4 Re8) 13. hxg5 Nfxd5 $146 (13... Nh7 14. a3 Na6 15. e4 g6 16. f4 f5 17. gxf6 Bxf6 {1-0 (38) Ponomariov,R (2705)-Korotylev,A (2600) Moscow 2007}) 14. Nxd5 (14. Bxd5 $5 {is interesting.} Nxd5 15. Nxd5 Bxg5 16. Qd3 f5 17. Bxg5 Qxg5 18. f4) 14... Bxg5 15. a3 ({Of course not} 15. Bxg5 Qxg5 16. Ne7+ Qxe7 $15) (15. Kf1 $5 {with more complications.} Nxd5 16. Bxd5 Bxd5 17. Qxd5 Bxc1 18. Rxc1 Qf6 19. Qh5) 15... Nxd5 16. Bxd5 Bxd5 17. Qxd5 Bxc1 18. Rxc1 Qf6 19. Qh5 {[%csl Gh1][%cal Rh5h8]} Qh6 $1 {[%cal Rh6c1]} 20. Qxh6 gxh6 $14 {[%mdl 4096] Endgame KRR-KRR} 21. Rd1 Rad8 22. Rd6 Kg7 23. Rhxh6 Rfe8 24. Rh4 Re6 25. Rd5 d6 26. Rdh5 Kf6 27. Rf4+ Ke7 28. Kd2 Rf6 29. Re4+ Kd7 30. f3 {[%cal Bf2f3,Bf3f4][%mdl 32]} Kc6 31. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} b5 32. Rh7 Rd7 33. Re8 d5 34. g5 Rg6 {[#]} (34... Rf5 $1 $14) 35. f4 $1 $18 d4 (35... Kd6 $16 36. Rb8 f6 37. Rxd7+ Kxd7) 36. Rf8 f6 37. Rc8+ (37. Rxf6+ Rxf6 38. Rxd7 Rxf4 39. Rxa7 Rg4 $16) 37... Kb7 38. Rxd7+ Kxc8 {KR-KR} 39. Rd5 ({Weaker is} 39. Rxa7 fxg5 40. Ra5 c4 $16) 39... c4 {and the idea ...fxg5 leaves Black hopeful.} 40. Rxb5 fxg5 (40... Kc7 $142 41. Rc5+ Kb6 42. Rxc4 fxg5 43. Rxd4 gxf4 44. Rxf4 Rg3) 41. Rxg5 ({Don't do} 41. fxg5 Kc7 42. Rc5+ Kd6 43. Rxc4 Rxg5 44. Rxd4+ Kc5 $18) 41... Rf6 {[#]} 42. Rc5+ $1 Kb7 43. Rxc4 Rxf4 44. Kd3 Rf8 45. Rxd4 Kc6 46. Rc4+ Kb5 $2 (46... Kd6 47. Ra4 Rf7) 47. e4 {White is clearly winning.} Re8 48. a4+ Ka5 49. Kc3 a6 50. b4+ Kb6 51. Kd4 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2499"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,115,31,27,44,37,34,36,23,25,49,33,51,29,22,7,42,22,39,20,14,14,36,37,35,35,42,32,32,33,48,19,5,14,22,10,0,0,0,0,12,14,27,16,41,22,81,81,81,108,108,123,123,106,119,98,106,109,81,90,320,326,291,293,354,358,750,673,727,718,654,645,624,635,625,629,1023,1270,1347,1259,1198,1154,1816,1787,1664,1648,29979,29980,29973,29973,29980,29981,29982,29981,29984,29985,29988,29989,5189,3233]} 1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb2 Nf6 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Qe2 Be7 8. O-O O-O 9. c4 e5 10. Nc3 {LiveBook: 15 Games. B52: Sicilian: Moscow Variation with 3...Bd7} Re8 (10... g6 11. Ne1 Nh5 12. g3 Bf6 13. Rb1 Bg7 14. Ba1 a5 15. a3 Nb8 16. b4 axb4 17. axb4 b6 {1-0 (38) Lupulescu,C (2609)-Houriez,C (2335) Novi Sad 2016}) 11. Ne1 {[%cal Bf3e1,Be1c2,Bc2e3][%mdl 32]} Nf8 12. Nc2 {White is slightly better.} Ne6 13. Ne3 Bf8 14. g3 g6 15. Qd3 Bg7 16. Kh1 $146 (16. Ncd5 Nd7 17. Bc3 Nd4 {½-½ (80) Grosar,A (2495)-Bukic,E (2435) Ljubljana 1997}) 16... h5 17. Ncd5 Nxd5 18. cxd5 Nd4 19. a4 Qd7 20. Bxd4 exd4 21. Nc4 Re7 22. Rae1 Rae8 23. Re2 b6 24. f4 f5 {[%cal Rf5e4]} 25. Rfe1 Bf8 26. Qf3 (26. Kg2 $5 {seems wilder.} fxe4 27. Rxe4 Kg7 28. Rxe7+ Rxe7 29. Rf1) 26... fxe4 27. Rxe4 Rxe4 28. Rxe4 Rxe4 29. Qxe4 Kf7 30. Kg2 Be7 31. d3 Bd8 (31... Kg7 $11 {remains equal.}) 32. f5 $1 $16 gxf5 33. Qf4 $1 Be7 34. Qh6 h4 35. Qh7+ Ke8 36. gxh4 {[%cal Bg3h4,Bh4h5,Bh5h6][%mdl 32]} Bf8 37. Qg6+ $1 Kd8 38. Kf3 Kc7 $2 (38... f4 $16) 39. h5 $18 f4 40. Kxf4 Qe7 41. h6 Qh4+ $2 {[#]} (41... a6 42. h7 Bg7) 42. Kf5 $1 Qh3+ {[#]} 43. Kf6 $1 {Hoping for Qf7+.} Qf3+ 44. Ke6 Qh3+ 45. Kf7 Qxh6 46. Qg8 Qf4+ 47. Ke8 Bh6 48. Qh7+ Kb8 49. Qe7 Qg4 50. Qxd6+ Kb7 51. Qxh6 Qc8+ 52. Ke7 Qc7+ 53. Ke6 Qc8+ 54. Ke5 Qe8+ 55. Qe6 Qh8+ 56. Kd6 Qxh2+ 57. Ne5 Ka6 58. Kc7 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Fernandez Cardoso, Alexey"]
[Black "Diaz Rosas, Julio Cesar"]
[Result "1-0"]
[ECO "B93"]
[WhiteElo "2445"]
[BlackElo "2312"]
[Annotator "TA RC"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,65,45,0,75,16,113,87,106,98,109,95,109,97,112,120,157,131,146,127,128,121,361,356,296,296,381,403,401,391,423,448,373,434,418,441,440,440,408,405,400,333,665,664,645,631,623,585,1762,1040,3083,2811]} 1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 e6 7. Qf3 Qb6 8. Nb3 Qc7 9. Be3 {LiveBook: 11 Games. B82: Sicilian Scheveningen: 6 f4} Nc6 (9... b5 $11) 10. g4 ({Better is} 10. O-O-O $16) (10. O-O-O b5 11. g4 Bb7 12. g5 Nd7 13. Kb1 g6 14. Bf2 Rc8 15. a3 Nc5 16. Bxb5 axb5 17. Nxb5 Qb8 18. Nxd6+ Bxd6 19. Nxc5 Rd8 20. Nxb7 Qxb7 21. Rd3 O-O 22. h4 Na5 {½-½ (22) Kravtsiv,M (2645)-Korobov,A (2692) Rivne 2016}) 10... g6 $146 (10... d5 $11) (10... b5 11. g5 Nd7 12. O-O-O Be7 13. h4 b4 14. Na4 {1-0 (28) Drazic,S (2489)-Leskur,D (2468) Mataruska Banja 2008}) 11. g5 {White is better.} Nd7 12. O-O-O Bg7 13. Nd4 h6 14. gxh6 Rxh6 15. Kb1 Rh5 16. f5 {Strongly threatening fxg6.} Nxd4 17. Bxd4 Bxd4 18. Rxd4 $40 {[%mdl 128] Threatens to win with Be2. White attacks with force.} b5 $2 (18... Ne5 $16 {keeps fighting.} 19. Qf4 exf5) 19. fxg6 $18 fxg6 20. Qg3 Ne5 21. Be2 Rh6 22. Rhd1 Nf7 {[#]} 23. e5 $1 {[%mdl 512]} d5 (23... dxe5 24. Rg4) 24. Rf1 g5 25. h4 {[%cal Bh2h4,Bh4g5,Bg5g6][%mdl 32]} Qxe5 26. Qf2 Ra7 27. hxg5 Rh2 28. Qg1 Rb7 $2 ({Reject} 28... Rxe2 29. Nxe2 Qxe2 30. g6 $18) (28... Nxg5 29. Rdf4 Rah7 30. Nxd5 Qxd5) 29. Rdf4 {White is clearly winning.} Rh8 30. g6 ({Weaker is} 30. Qc5 Rc7 31. Qb4 Qd6 $18) 30... Nd6 31. Qc5 {aiming for Ne4!} Rg7 32. a4 b4 {[#]} 33. Ne4 $1 {[%mdl 512]} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Diaz Hernandez, Heriberto"]
[Black "Salazar Farias, Luis German"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2331"]
[BlackElo "2296"]
[Annotator "RC"]
[PlyCount "23"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:01:22]} 2. Nf3 {[%emt 0:00:00]} g6 {[%emt 0:00:42]} 3. c4 {[%emt 0:00:41]} Nc6 {[%emt 0:00:06]} 4. d4 {[%emt 0:00:18]} cxd4 {[%emt 0:00:06]} 5. Nxd4 {[%emt 0:00:05]} Bg7 {[%emt 0:00:03]} 6. Be3 {[%emt 0:00:16]} Nf6 {[%emt 0:00:06]} 7. Nc3 {[%emt 0:00:13]} O-O {[%emt 0:00:06]} 8. Be2 {[%emt 0:00:31]} d6 {[%emt 0:00:00]} 9. O-O {[%emt 0:00:38]} Bd7 {[%emt 0:00:21]} 10. f3 Nxd4 {[%emt 0:04:51]} 11. Bxd4 {[%emt 0:00:56]} a5 {[%emt 0:00:05]} 12. c5 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Tello Chavez, Isaac Valent"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2286"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,117,-16,-21,10,-14,19,-20,0,-16,0,0,0,0,0,0,10,9,16,9,33,13,6,-11,0,-15,-18,-21,-15,-15,-14,-15,-18,-23,-5,-8,-14,-9,-7,-7,10,-50,-58,-63,-61,-64,-31,-26,-35,-35,-36,-34,-9,-104,-100,-97,-99,-102,-91,-86,-96,-127,-114,-124,-83,-75,-84,-80,-42,-59,-64,-67,-71,-64,-53,-63,-59,-60,-60,-59,-53,-50,-37,-37,-34,-41,-42,-42,-34,-37,0,0,0,0,0,-8,-8,-8,-8,-33,-8,-8,-8,-8,-8,-29983]} 1. d4 d6 2. Bg5 Nd7 3. Nd2 Ngf6 4. Ngf3 e5 5. dxe5 dxe5 6. e4 {A46: 1 d4 Nf6 2 Nf3 e6: Torre, London and Colle Systems} (6. e3 Be7 7. Bc4 O-O 8. O-O {½-½ (8) Astasio Lopez,D (2397)-Paunovic,D (2500) Elgoibar 2013}) 6... Be7 7. Bc4 O-O 8. O-O {LiveBook: 3 Games} c6 9. a4 a5 10. c3 Qc7 11. Qc2 $146 (11. Nh4 Nc5 12. Qf3 Nfxe4 13. Nxe4 Nxe4 14. Qxe4 Bxg5 15. Nf3 Bf6 16. Rfe1 Re8 17. g4 g6 18. Re3 {½-½ (18) Olcayoz,A (2290)-Apaydin,F (2103) Kusadasi 2004}) 11... Nc5 12. Be3 Ng4 13. Bg5 Nf6 14. Be3 Bd7 15. b4 Ne6 16. bxa5 Nc5 17. a6 Nxa6 18. Nb3 b5 19. axb5 cxb5 20. Bd3 Ng4 21. Bg5 Bxg5 22. Nxg5 h6 23. Nf3 $1 Nc5 24. Nxc5 Qxc5 25. h3 Nf6 26. Qb2 Ra4 27. Rxa4 (27. c4 $11) 27... bxa4 $15 28. Qb4 Rc8 {[%cal Bf8c8,Bc8c3,Bc3d3][%mdl 32]} 29. Ra1 Qxc3 30. Qxc3 Rxc3 31. Nxe5 Be8 32. Kf1 $1 Nd7 33. Nxd7 (33. Bb5 $1 $11 Nxe5 34. Bxe8) 33... Rxd3 $11 {[%mdl 4096] Endgame KRB-KRN} ({Of course not} 33... Bxd7 $6 34. Ke2 $11) 34. Nc5 Rd4 35. f3 Bb5+ 36. Kf2 Rc4 37. Nb7 Rc2+ 38. Kg3 Rc3 39. Kf4 f6 40. Nd6 Bc6 (40... Bd7 $5 {seems wilder.} 41. h4 g5+ 42. hxg5 hxg5+ 43. Kg3 Kf8) 41. e5 fxe5+ 42. Kxe5 Rc5+ 43. Kf4 Kf8 44. Ra3 Ke7 45. Nf5+ Kf6 46. Nd4 Bd7 47. h4 Re5 48. g4 g5+ 49. hxg5+ hxg5+ 50. Kg3 Rd5 51. Ne2 Rd2 52. Nc3 {[#] Hoping for Ne4+.} Rd4 53. Ne4+ Kg6 54. Kf2 Bc6 55. Ke3 Rb4 {aiming for ...Bxe4.} 56. Nc3 Kf6 {[#]} 57. Rxa4 $1 {[%mdl 512] The position is equal.} Rxa4 ({But not} 57... Bxa4 $6 58. Nd5+ Ke6 59. Nxb4 $16) 58. Nxa4 Bxa4 59. Ke4 $2 {[%mdl 40960] An unexpected result.} (59. f4 $11) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "7"]
[White "Cofre Archibold, Nestor"]
[Black "Otero Acosta, Diasmany"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "2256"]
[BlackElo "2438"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,76,7,6,7,-61,-60,-112,-51,-302,-123,-123,-125,-129,-126,-127,-125,-123,-121,-121,-125,-116,-119,-113,-107,-142,-137,-154,-156,-143,-117,-155,-156,-154,-156,-146,-147,-147,-152,-141,-141,-141,-142,-203,-199,-196,-198,-183,-184,-172,-172,-350,-354,-368,-361,-521,-513,-796,-745,-811,-801,-1368,-1233,-1783,-1643]} 1. Nf3 d5 2. c4 c6 3. b3 Nf6 4. g3 Bg4 5. Bg2 e6 6. Bb2 Nbd7 7. O-O Bd6 8. d4 h5 {[%cal Bh7h5,Bh5h4][%mdl 32] D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (8... O-O 9. Nbd2 h6 10. Ne5 Bf5 11. Rc1 Qe7 12. h3 Ba3 13. Bxa3 Qxa3 14. Nxd7 Nxd7 15. Ra1 a5 16. Qc1 Qe7 17. a3 {½-½ (34) Timofeev,A (2690)-Ni,H (2645) Ningbo 2010}) 9. Ne5 (9. Qe1 $11) 9... h4 $1 $15 10. f3 (10. Nd2 $15) 10... Bf5 $146 {White must now prevent ...hxg3.Black is better.} (10... hxg3 11. hxg3 Bf5 12. Kf2 Qe7 13. Rh1 O-O-O 14. Nd2 Nxe5 15. dxe5 Bc5+ 16. e3 {0-1 (45) Hillenbrand,M (2084)-Weber,R (2061) Germany 1999}) 11. e4 $2 {[%mdl 8192]} (11. g4 $15 h3 12. Bh1 Bxg4 13. c5 (13. fxg4 Nxe5 14. dxe5 Nxg4 $17) (13. Nxg4 Nxg4 14. fxg4 Bxh2+ 15. Kf2 Qg5 $15)) 11... Nxe5 (11... dxe4 12. fxe4 Bxe4 13. Nxf7 Kxf7 14. Bxe4 hxg3 15. hxg3 $17 (15. Qg4 $2 Rxh2 16. Qg6+ Kg8 $19)) (11... hxg3 $19 {is more deadly.} 12. exf5 gxh2+ 13. Kh1 Nh5) 12. dxe5 Bc5+ 13. Bd4 Qb6 $1 14. Bxc5 Qxc5+ 15. Rf2 hxg3 16. hxg3 dxe4 17. exf6 e3 $1 {[%cal Re3f2]} (17... Rd8 18. Qe1 exf3 19. fxg7 $11) 18. Re2 Qe5 19. fxg7 Qxg7 20. Na3 Qxg3 {aiming for ...Qh2+.} 21. Qd4 Qh2+ $1 {[%mdl 1024] Black has strong compensation.} 22. Kf1 {Black should prevent Rd1.} Rg8 23. Rd1 Bh3 {[%cal Rh2h1]} 24. Qd7+ Kf8 {[%cal Rh2h1]} 25. Qd6+ Qxd6 26. Rxd6 Rxg2 27. Rxg2 {[#] Threatens to win with Nc2.} Ke7 $1 $36 {[%cal Re7d6][%mdl 2048] Keeping White busy.} (27... e2+ 28. Kxe2 Bxg2 29. Rd4 $16) 28. Rd4 {[#]} (28. Ke2 $17 Bxg2 29. Rd3) 28... Rg8 $1 $19 {[%cal Rg8g2]} ({And not} 28... e2+ 29. Kxe2 Bxg2 30. Rh4 $16) 29. Rdg4 Rxg4 (29... Bxg2+ $2 {loses.} 30. Rxg2 (30. Kxg2 Rd8 31. Kf1 Rd2 $14) 30... Rd8 31. Ke1 $18) 30. fxg4 {Strongly threatening Kg1.} e2+ $1 31. Kxe2 Bxg2 {[%mdl 4096] Endgame KB-KN} 32. c5 $2 (32. Kf2 Bh1 33. c5) 32... Bd5 33. Nc2 Kf6 34. Nb4 (34. Kf2 $142) 34... Kg5 {Black is clearly winning.} 35. Ke3 (35. Nd3 $142 f6 36. Nf2) 35... Kxg4 36. Kd4 f6 37. Nd3 Kf3 38. Nb4 e5+ 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.14"]
[Round "7"]
[White "Lopez Raygoza, Luis Albert"]
[Black "Leon Valdes, Jony Wilson"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2250"]
[BlackElo "2363"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,66,4,27,-16,-27,-7,-19,-14,-4,-26,-7,-20,-20,-25,-7,-39,-18,-41,-47,-84,-10,-17,-12,-12,0,0,0,0,0,0,0,0,-8,-1,0,0,88]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 O-O 10. O-O-O a6 11. Qf2 Bxd4 12. Bxd4 b5 13. Be3 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} Bb7 (13... Qa5 14. Kb1 b4 15. Ne2 Qc7 16. Nd4 Nxd4 17. Bxd4 a5 18. Bb5 a4 19. b3 Ba6 20. Bxa4 Rfc8 {1-0 (74) So,W (2808)-Holt,C (2567) chess.com INT 2017}) 14. Kb1 Rc8 15. Bd3 Nb4 16. Bd4 Qe7 {LiveBook: 3 Games} 17. f5 $146 (17. Rhe1 Nxd3 18. cxd3 b4 19. Ne2 a5 20. g4 b3 {½-½ (35) Quesada Perez,Y (2638)-Tiviakov,S (2590) Villahermosa 2016}) 17... Nxd3 18. Rxd3 {[#] Hoping for f6.} exf5 19. Qxf5 Nc5 20. Rh3 {[%csl Gh3][%cal Rf5h7]} h6 (20... g6 $5 {seems wilder.} 21. Qf4 h5 22. Ne2 Ne6 23. Qf6 Rfe8) 21. Be3 (21. Rf1 b4 22. Be3 Qd7 23. Qxd7 Nxd7 $15) 21... Qe6 22. Qf2 Nd7 23. Bd4 Nxe5 24. Re1 f6 25. Qg3 Rc4 (25... Qf5 $17 {Strongly threatening ...b4.} 26. a3 (26. Bxe5 $2 fxe5 27. Rxh6 d4 $19) 26... Nc6) 26. Rh4 $1 $11 {The position is equal.} b4 27. Nd1 $1 Kh7 {And now ...g5 would win.} 28. b3 $36 {[%mdl 2048] White fights for an advantage.} Rc7 ({Don't capture} 28... g5 $2 {[#]} 29. Rxh6+ $1 {[%mdl 512]} (29. bxc4 gxh4 30. Qf4 Re8 $14) 29... Kxh6 30. bxc4 $18) 29. Bxe5 fxe5 30. Rxe5 Qd6 31. Qe3 Qg6 32. Qd2 a5 33. Ne3 Rh8 (33... Qf6 $11 {keeps the balance.} 34. Rf5 Qxh4 35. Rxf8 d4) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Gonzalez Vidal, Yuri"]
[Black "Diaz Hernandez, Heriberto"]
[Result "1-0"]
[ECO "C81"]
[WhiteElo "2534"]
[BlackElo "2331"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,138,14,14,8,14,14,12,9,16,16,31,0,0,-7,2,11,22,21,27,25,16,1,40,17,62,50,81,41,62,63,63,63,63,61,110,109,131,108,133,135,139,135,170,170,154,154,203,204,247,240,240,228,295,202,613,611,608,604,933,920,1085,1082,915,775,758,732,639,168,210,189,1739,1575,1228,1205,1182,1139,29959,29960,29961,29960,29960,29961,29961,29945,2403,29946,29953,29958,29958,29957,29959,29960,29971,29967,29967,29966,29966,29968,29967,29969,29968,29969,29970,29970,29971,29972,29972,29973,29972,4633,29983]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 O-O {[#]} 11. c4 $1 {[%mdl 512]} bxc4 {[#]} 12. Bxc4 $1 {[%mdl 512]} Bc5 (12... dxc4 13. Rxd8) 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Qb6 16. Qxb6 {C81: Open Ruy Lopez: Keres Variation (9 Qe2)} (16. Bxd5 $2 Qxe3 17. fxe3 Rad8 18. Bxe4 Rxd1+ 19. Kf2 Ne7 $19) 16... cxb6 17. Na3 {[%cal Bb1a3,Ba3c2,Bc2d4][%mdl 32]} ({Don't go for} 17. Bxd5 $2 Rad8 18. Ng5 Bxd5 $19) 17... Rfd8 18. Nc2 {The position is equal.} Rac8 19. Ncd4 Na5 20. h3 Nc4 21. Rab1 b5 22. Bc2 h6 23. Re1 Nc5 24. Nh4 $146 Re8 25. f4 Bd7 26. Nhf3 Re7 27. Re2 g6 28. Kf2 Rce8 29. b4 Ne6 30. Nxe6 Bxe6 31. g4 Bd7 32. Rbe1 $1 g5 33. f5 ({Much less strong is} 33. fxg5 $6 hxg5 34. Nxg5 Nxe5 $14) 33... f6 {[%cal Rf6e5]} 34. e6 ({Much worse is} 34. exf6 $6 Rxe2+ 35. Rxe2 Kf7 $14) 34... Bc6 35. Nd4 Bb7 36. a4 bxa4 37. Bxa4 Rc8 38. Bd7 Rc7 39. Rc2 Kf8 40. Ra1 h5 41. h4 hxg4 $2 (41... gxh4 42. gxh5 Rh7) 42. hxg5 $18 fxg5 43. Rh1 {Threatens to win with f6.} Kg7 {and the idea ...Bc8 leaves Black hopeful.} 44. Kg3 Rcxd7 45. exd7 Rxd7 46. Re2 Nd6 47. Ne6+ Kg8 48. Reh2 $2 (48. Kxg4 Bc8 49. Rh6) 48... Nxf5+ 49. Kxg4 Ne3+ $2 (49... d4) 50. Kxg5 d4 {[#]} 51. Rh8+ $1 Kf7 52. Nd8+ Rxd8 53. R1h7+ Ke6 54. Rxd8 Bd5 55. Rh6+ Ke7 56. Rhd6 Be6 57. Rxd4 Nc2 58. R8d6 Nxd4 59. Rxd4 {[%mdl 4096] Endgame KR-KB} Bd7 60. Kf4 Kd8 61. Rc4 Bb5 62. Rc5 Kd7 63. Ke5 Bc6 64. Ra5 Bb7 {[#]} 65. Kd4 $1 {[%cal Rd4c5]} Kc6 66. Rg5 Bc8 67. Rc5+ Kb7 68. Rc3 Bg4 69. Kc5 (69. Rg3 $142 Be2 70. Kc5 Kc8 71. Rg7 Kd8 72. Ra7 Bf3 73. Kb6 Bh5 74. Kxa6) 69... a5 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Macieja, Bartlomiej"]
[Black "Cordova, Emilio"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2529"]
[BlackElo "2645"]
[Annotator "TA"]
[PlyCount "153"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,153,50,41,53,55,39,42,36,53,93,75,88,13,47,44,60,17,36,0,25,-33,48,-56,-14,0,-18,-18,-28,-29,-6,-10,14,0,0,0,0,0,0,-43,-35,-23,-7,-22,-30,-66,-59,-54,16,6,16,0,25,13,15,-7,59,51,56,50,29,29,48,0,16,16,16,16,16,16,19,14,12,0,84,20,40,2,3,2,12,12,12,12,13,12,12,12,13,8,204,13,13,0,20,28,699,365,365,365,365,32,365,249,249,0,249,69,77,0,0,0,77,77,77,0,0,0,24,24,26,8,14,14,14,8,8,8,8,8,18,12,12,12,12,12,12,12,20,20]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bd3 Be7 7. Qe2 c5 8. Nxc5 Nxc5 9. dxc5 Qa5+ {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4} 10. Bd2 Qxc5 11. Ne5 (11. O-O-O O-O 12. g4 b6 13. g5 Nd5 14. Ne5 Nb4 15. Bxb4 Qxb4 16. Rhg1 g6 17. h4 {½-½ (67) Rublevsky,S (2688)-Wang,H (2724) Ningbo 2010}) 11... O-O {White is slightly better.} 12. O-O-O Rd8 13. a3 $146 (13. g4 Nd7 14. f4 Nxe5 15. fxe5 Bd7 16. Rhf1 Be8 17. Kb1 {½-½ (29) Schuster,P (2466)-Zygulski,K (2417) ICCF email 2007}) 13... Qc7 14. Bg5 (14. g4 $16) 14... Rd5 15. f4 h6 16. h4 Bd7 (16... hxg5 $6 17. hxg5 g6 18. gxf6 Bxf6 19. Qg4 Rxe5 20. Bxg6 $18 (20. fxe5 Qxe5 21. c3 Qg5+ 22. Qxg5 Bxg5+ 23. Kc2 e5 $16)) 17. g4 Bc6 (17... hxg5 $2 18. hxg5 Rxe5 19. fxe5 $18) 18. Rh3 (18. Kb1 $11) 18... Rad8 (18... hxg5 $2 19. hxg5 g6 20. Qh2 $18 (20. gxf6 Bxf6 21. Re1 Rad8 $16)) (18... Bd6 $15) 19. Re1 (19. Kb1 $14) 19... Rxd3 20. Rxd3 hxg5 21. Rxd8+ Bxd8 22. hxg5 Nd7 (22... Nd5 $5 {is interesting.} 23. g6 fxg6 24. g5 Ne7 25. Nxc6 Qxc6 26. Qxe6+ Qxe6 27. Rxe6 Kf7) 23. Nxc6 bxc6 ({Don't go for} 23... Qxf4+ $2 24. Kb1 Bxg5 25. Nxa7 $18) (23... Qxc6 $5 {seems wilder.} 24. Kb1 Nf8 25. Qd3 Ba5 26. Rf1 Qg2) 24. Kb1 Nf8 (24... Qxf4 $2 25. Rd1 $18) 25. Qe3 g6 26. Rd1 Be7 27. Qe4 Bd6 28. Rf1 $1 Qb6 29. Ka2 Bc7 30. Rf3 Qg1 31. f5 exf5 ({Black should try} 31... Qc5 $1 $15) 32. gxf5 $11 Qxg5 33. Qxc6 Bb6 34. c4 Qe7 35. Qd5 gxf5 (35... g5 $11) 36. Rg3+ $14 Kh8 37. Qxf5 Ng6 38. Rd3 Kg7 39. b4 (39. Rd5 $5 {is more complex.} Nh4 40. Qd3 Ng6 41. b4 Qe1 42. Qd2) 39... Qe5 (39... Qe2+ $5 {looks sharper.} 40. Kb3 Ne5 41. Rg3+ Kf8 42. Qc8+ Ke7) 40. Qxe5+ Nxe5 41. Rg3+ Kf6 42. c5 Bd8 43. Kb3 Ke6 44. Rg8 Kd7 (44... Be7 $11) 45. Ka4 (45. Kc3 $16) 45... a6 $11 46. b5 axb5+ 47. Kxb5 Nc6 48. Rg7 Nd4+ 49. Kc4 Ke6 50. a4 Nc6 $1 51. Rg1 {Threatens to win with Rd1.} Bc7 52. Rd1 {Hoping for Kb5.} Na7 $2 {[#]} (52... f5 $11 {and Black stays safe.}) 53. Rb1 $2 ({White must play} 53. a5 $1 $18 {[%mdl 512]}) 53... Nc6 54. Rd1 {Black must now prevent Kb5.} f5 55. Kb5 Na5 $2 {[%mdl 8192]} ({Don't consider} 55... Na7+ $2 56. Ka6 Nc8 57. Kb7 $18) (55... Nb8 $11) 56. Re1+ Kd7 57. Rh1 f4 58. Rh7+ $2 (58. Rh3 $1 $18) 58... Kd8 $2 {[%mdl 8192]} (58... Kc8 $1 $14) 59. Rh8+ $18 Kd7 60. Rh7+ {[%mdl 1024] White has strong compensation.} Kd8 {[#]} 61. c6 $2 (61. Rh3 $1 $18) 61... Nb3 $14 62. Rh8+ ({Better is} 62. Rd7+ $16 Kc8 63. Rd3) 62... Ke7 $11 63. Rh7+ (63. a5 $11 f3 64. Rh7+ Kf6 65. a6 (65. Rxc7 $2 f2 66. Kb4 f1=Q $19)) 63... Kd8 $16 64. Rd7+ Kc8 {[#]} 65. Kc4 (65. Rd3 $1 $16 {[%cal Rd3b3]} Nc1 66. Rh3) 65... Na5+ $11 66. Kd5 Kb8 67. Rf7 Nb3 68. Kc4 Nd2+ {The position is equal.} 69. Kb5 {aiming for Rf8+.} Ne4 {...Nd6+ is the strong threat.} 70. Rf8+ Ka7 71. a5 Nc3+ 72. Kc4 Bxa5 73. Rf7+ Kb6 74. c7 Kb7 75. Rf5 Bxc7 76. Kxc3 f3 77. Rxf3 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Obregon Rivero, Juan Carlos"]
[Black "Hernandez Guerrero, Gilberto"]
[Result "1/2-1/2"]
[ECO "E43"]
[WhiteElo "2529"]
[BlackElo "2499"]
[Annotator "TA"]
[PlyCount "22"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,22,11,15,2,25]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5 8. a3 cxd4 9. axb4 dxc3 10. bxc3 d6 11. Nd4 {E43: Nimzo-Indian: Rubinstein: 4...b6} (11. Re1 Nbd7 12. e4 Qc7 13. Bf4 Ne5 14. Nxe5 dxe5 15. Bg5 Ne8 16. Qg4 Kh8 17. Qh4 f6 18. Be3 f5 19. exf5 Qc6 20. Bf1 exf5 21. Qe7 Rf6 22. Bg5 {1-0 (22) De Vreugt,D (2459)-Ris,R (2205) Dieren 2003}) 11... Nbd7 $146 (11... a6 12. f3 Nbd7 13. e4 Ne5 14. Bg5 Rc8 15. Bb1 h6 16. Bh4 Rxc4 17. Qd2 Rc7 18. Re1 Ng6 {½-½ (41) Tukmakov,V-Gojhman,A Moscow 1966}) 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Blanco Fernandez, Alvaro"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2477"]
[BlackElo "2241"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,109,-8,-3,-22,0,2,49,0,16,0,0,0,4,-21,-29,-61,18,0,0,5,13,10,1,0,0,0,0,0,0,-9,-14,-81,-75,-89,48,8,5,14,166,164,198,204,260,169,251,251,239,239,233,227,226,223,373,318,348,254,254,254,400,312,324,150,476,281,493,519,463,437,813,774,970,939,941,933,888,744,889,889,969,676,613,0,869,854,4133,2544,6179,6170,5381,5310,29987,29988]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Be7 5. Bg2 O-O 6. O-O c6 7. Qc2 b6 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} Bb7 9. e4 Na6 10. e5 Nd7 11. a3 {E06: Closed Catalan: Early deviations} Nc7 12. Rd1 Qb8 13. Nf1 {White is slightly better.} Rc8 14. Ne3 a5 15. b3 {[%cal Bb2b3,Bb3c4][%mdl 32]} c5 16. Bb2 b5 17. dxc5 $146 (17. a4 bxc4 18. bxc4 dxc4 19. Nxc4 {0-1 (34) Zherebukh,Y (2606)-Kovalyov,A (2608) New York 2016}) 17... Bxc5 (17... Nxc5 $15 18. Nd4 dxc4) 18. Qe2 bxc4 19. bxc4 Ba6 20. Bd4 Qa7 21. Qa2 {[%cal Rc4d5]} Bxd4 22. Nxd4 {[%cal Rc4d5]} Nxe5 23. cxd5 Nxd5 24. Nxd5 {Hoping for Ne3.} Bc4 25. Nb5 (25. Qb2 $11 Rab8 26. Nb5 Rxb5 27. Qxe5 exd5 28. a4) 25... Bxb5 $17 26. Qb2 {[#]} Ng4 {[#]} ({Of course not} 26... exd5 $6 27. Qxe5 Ba4 28. Rxd5 $11) (26... Ba4 $1 $17 27. Nb6 Bxd1 28. Nxc8 Rxc8 29. Rxd1 Qc7) 27. Ne7+ $1 {[%mdl 512]} Qxe7 28. Bxa8 {Threatens to win with Bf3.} Rxa8 $2 (28... Nxf2 $1 $11 {and Black has nothing to worry.} 29. Kxf2 (29. Qxf2 Rxa8 30. Rdc1 Bd3 $11) 29... Qa7+ 30. Qd4 Qxa8) 29. Qxb5 $18 Qf6 30. Qe2 h5 31. Rab1 Rc8 (31... Qc3 $142 32. Rd3 Qc7) 32. Rb5 g6 33. h3 ({Don't take} 33. Rxa5 $6 Qc3 34. Qd2 Qf3) 33... Nh6 34. Rxa5 Nf5 35. Qe5 Qe7 (35... Qxe5 $142 36. Rxe5 Ra8) 36. Qe4 Kh7 37. Ra8 Rxa8 38. Qxa8 {[%mdl 4096] Endgame KQR-KQN} Qc7 (38... e5 {was worth a try.} 39. Qd8 Qxa3) 39. Qf3 e5 40. Kg2 (40. Qd5 $18 {and White stays clearly on top.}) 40... Qc2 $2 (40... h4 $16 {is tougher.}) 41. Re1 (41. Rd7 $142 Kg7 {[#]} 42. a4 $1 {[%mdl 512]}) 41... f6 $2 (41... Qc5 {was necessary.} 42. Qe4 Qxa3 43. Qxe5 Qa6) 42. Qe4 Qc3 43. a4 Kh6 (43... Nd6 $142 44. Qe3 Qb4) 44. Rb1 Qd2 45. Rb6 Kg7 46. Rb7+ Kh6 47. Rb3 Qd1 48. Qd3 Qe1 49. Rb1 Qa5 50. Qe4 Qd2 51. h4 Qa2 52. Rb6 Kg7 53. Qb7+ Kh6 54. Qa8 {[%cal Ra8h8]} Ne3+ 55. Kh3 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Otero Acosta, Diasmany"]
[Black "Fernandez Cardoso, Alexey"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2438"]
[BlackElo "2445"]
[Annotator "TA"]
[PlyCount "242"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,242,0,0,-8,15,0,-7,-1,58,40,55,57,185,184,195,186,192,186,250,166,162,150,147,0,0,0,0,0,26,49,31,-68,-72,-81,-52,-52,-52,-86,-83,-80,-81,-77,-40,-37,-37,-70,-74,-80,-75,-104,-80,-87,-91,-168,-175,-149,-80,-83,-83,-83,-3,-3,-5,-71,-68,-103,-90,-93,-93,-94,-68,-81,0,-74,-88,-98,-66,-137,-146,-135,-72,-72,0,-128,0,-95,-70,-100,-86,-110,-100,-90,-92,-127,-134,-348,-70,-622,-302,-346,-304,-319,-210,-320,-295,-330,-236,-211,-167,-193,-125,-358,-8,-8,-8,-8,0,0,8,8,8,8,65,0,2,0,0,0,0,0,65,65,65,65,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,0,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,71,66,66,66,66,66,66,66,70,70,71,71,71,71,71,71,71,71,71,71,71,71,71,71,72,71,72,0,73,73,73,71,72]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Be2 b6 9. O-O Bb7 10. e4 {D45: Semi-Slav: 5 e3} (10. Bb2 Qe7 11. Rad1 Rac8 12. e4 Nxe4 13. Nxe4 dxe4 14. Qxe4 f5 15. Qc2 c5 16. Rfe1 Nf6 17. d5 Ne4 18. Bf1 Rce8 19. g3 {1-0 (35) Fressinet,L (2672)-Mamedyarov,S (2768) Doha 2016}) 10... e5 11. Bg5 exd4 $146 (11... dxc4 12. bxc4 exd4 13. Nxd4 Qc7 14. g3 Rfe8 15. Rad1 Be5 16. f3 Nc5 17. Nf5 Bc8 {0-1 (27) Van Beek,L (2416)-Sielicki,C Belgium 2001}) 12. Nxd4 {The position is equal.} Be5 (12... h6 $11 13. Be3 dxe4) 13. Rad1 c5 14. Ndb5 $1 d4 (14... Bxc3 $14 15. Nxc3 d4) 15. f4 $18 Bb8 16. e5 h6 17. Bh4 (17. exf6 hxg5 18. fxg5 Qe8 $11) 17... g5 (17... a6 $142) 18. fxg5 {[%cal Rf1f6]} ({Not} 18. exf6 gxh4 19. Nxd4 cxd4 20. Rxd4 Bc6 $11) 18... Nh7 19. Ne4 {Threatens to win with Ned6.} hxg5 20. Nxg5 ({White should play} 20. Ned6 $16 Nxe5 21. Nxb7) 20... Nxg5 $11 21. Qf5 Nxe5 22. Bxg5 Qd7 23. Qxd7 Nxd7 24. Bf3 (24. Bh5 $14) 24... Bxf3 $15 25. Rxf3 f6 $36 {[%mdl 2048] Black is pushing.} 26. Bf4 Ne5 27. Rg3+ Kf7 28. Rf1 a6 29. Na3 Ng6 (29... Re8 $5 {is more complex.} 30. Nb1 Nd7 31. Bxb8 Raxb8 32. Nd2 Re2) 30. Bxb8 Raxb8 31. Nb1 Rbe8 32. Rgf3 Kg7 33. Kf2 Re5 34. Nd2 Rfe8 35. Kg3 (35. Kg1 $17 {might work better.}) 35... Rg5+ $19 36. Kf2 Nh4 (36... Ne5 $142 37. Rg3 Kg6) 37. Rg3 $17 Rxg3 38. Kxg3 {[%mdl 4096] Endgame KRN-KRN} Re2 (38... Ng6 $1 $17) 39. Rf2 $11 Nf5+ 40. Kf3 (40. Rxf5 $11 Rxd2 41. Rf2) 40... Re3+ $17 41. Kf4 Nh4 42. Nf3 Ng6+ 43. Kf5 Ne5 44. h4 b5 (44... a5 $17) 45. Nd2 (45. Nxe5 $11 {keeps the balance.} Rxe5+ 46. Kf4) 45... Nd3 46. Rf3 Ne1 47. Rf2 {[#]} (47. Rxe3 $1 $15 dxe3 48. Ne4) 47... Re5+ $1 48. Kg4 Nd3 (48... Kg6 $142 49. Nf3 Re4+ 50. Kg3 Nd3) 49. Rf3 Ne1 (49... Nb2 $142 50. Kg3 f5) 50. Rf2 $1 Nd3 51. Rf3 Nb4 52. Rf2 Nxa2 53. Nf3 Re4+ 54. Kf5 Nc3 55. cxb5 axb5 {aiming for ...d3.} 56. g4 $2 (56. Ra2 $17 {keeps fighting.}) 56... Re3 $2 (56... d3 $19 57. h5 c4 58. bxc4 bxc4 59. h6+ Kxh6) 57. Nd2 $2 {[%mdl 8192]} (57. g5 $15 fxg5 58. Nxg5) 57... Re5+ 58. Kf4 Ne2+ 59. Kf3 Re3+ 60. Kg2 Nc1 {...Nd3 is the strong threat.} 61. Rf3 Re2+ 62. Rf2 {and the idea Rxe2 leaves White hopeful.} Re5 {White must now prevent ...Nd3.} 63. Rf3 d3 (63... Re7 $19 64. h5 Re2+ 65. Rf2 Re3) 64. Rf1 $2 (64. Kf1 $17) 64... Nxb3 $2 (64... Re2+ $19 65. Kf3 Rxd2 66. Rxc1 {[#]} c4 $1 {[%mdl 512]} 67. bxc4 Rc2) 65. Nxb3 $19 {KRN-KR} c4 66. Rd1 $1 Re2+ 67. Kf3 Rh2 68. Nd4 b4 69. Nf5+ Kf8 (69... Kg8 $11) 70. Ne3 (70. g5 $1 $14 fxg5 71. hxg5) 70... Rh3+ 71. Ke4 f5+ 72. gxf5 Rxh4+ 73. Kd5 Rf4 ({Better is} 73... c3 $11 74. Rxd3 Kf7) 74. Nxc4 $14 Rxf5+ 75. Ne5 b3 76. Ke6 Rf2 77. Rxd3 b2 78. Rb3 Re2 79. Rb7 Kg8 80. Kf6 Rf2+ 81. Kg5 Rg2+ 82. Ng4 Kf8 83. Kf6 {[%cal Rb7b8]} Ke8 84. Ne5 {[%cal Rb7b8]} Kd8 85. Nc4 Kc8 86. Nd6+ ({Of course not} 86. Nxb2 Kxb7 87. Nd1 Rg3 $15) 86... Kd8 87. Ke6 {[%csl Ge6][%cal Rb7d7]} Re2+ 88. Kd5 (88. Kf5 $1 $14) 88... Rd2+ (88... b1=Q $11 89. Rxb1 Rd2+ 90. Ke5 Re2+ 91. Kd4 Kd7) 89. Kc5 Rc2+ 90. Nc4 Kc8 91. Rb3 Kd7 92. Kd4 Ke6 93. Rb6+ Kd7 94. Nxb2 Rc6 95. Rb7+ Rc7 96. Rb5 Rc1 97. Nc4 Rd1+ 98. Kc5 Rc1 99. Rb6 Ke7 100. Kd5 Rd1+ 101. Ke4 Re1+ 102. Ne3 Kd7 103. Kd4 Rc1 104. Rh6 Ke7 105. Ke5 Kd7 106. Kd5 Ke7 107. Nf5+ Kf7 108. Nd6+ Ke7 109. Ne4 Rd1+ 110. Ke5 Kd7 111. Nf6+ Kc6 112. Nd5+ Kc5 113. Nc3 Rd8 114. Ne4+ Kb5 115. Nd6+ Kb4 116. Rh4+ Kc3 117. Rh3+ Kd2 118. Rh2+ Kd3 119. Rh3+ Kd2 $1 120. Ne4+ Ke2 121. Rh2+ Ke3 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Leon Valdes, Jony Wilson"]
[Black "Gonzalez Arroyo, Lenin"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2363"]
[BlackElo "2233"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,20,13,23]} 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. cxd5 cxd5 8. Ne5 e6 9. Nc3 Nfd7 10. f4 Nc6 11. Be3 $146 Nb6 12. Bf2 f6 13. Nd3 f5 14. e3 Nc4 15. g4 Kh8 16. b3 Nd6 17. Ne5 Bd7 18. Nxd7 Qxd7 19. Rc1 Rac8 20. Kh1 {1-0 (33) Karjakin,S (2762)-Radjabov,T (2738) Berlin 2015} 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Gracia Alvarez, Gerardo An"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2251"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,52,0,0,-4,0,2,10,2,5,19,41,38,42,31,47,31,33,17,63,0,39,44,47,41,58,61,67,60,53,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 d6 7. Bg5 Nbd7 8. e3 b6 9. Ne2 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} Bb7 10. Qc2 h6 (10... c5 11. Rd1 Qc7 12. Nc3 a6 13. Bh4 Rac8 14. dxc5 Qxc5 15. Qd2 d5 16. cxd5 Nxd5 17. Nxd5 Qxd5 18. Qxd5 exd5 {½-½ (35) Vidit,S (2686)-Granda Zuniga,J (2648) Douglas 2016}) 11. Bh4 $1 c5 12. Rd1 Rc8 13. Nc3 d5 14. cxd5 exd5 15. Be2 cxd4 16. Rxd4 Nc5 $146 17. f3 ({Better is} 17. Qf5 $14) 17... Ne6 18. Rd2 d4 19. O-O g5 20. Bf2 {[%cal Re3d4]} Nd5 {[%cal Bf6d5,Bd5f4,Bf4h3][%mdl 32]} 21. exd4 Nef4 22. Bd3 (22. Rfd1 $14) 22... Nxg2 $11 {The position is equal.} 23. Kxg2 {[#] aiming for Kg1.} Nf4+ 24. Kg1 Nh3+ 25. Kg2 Nf4+ 26. Kg1 {Hoping for Bf5.} Nh3+ 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.15"]
[Round "8"]
[White "Lopez Raygoza, Luis Albert"]
[Black "Ruiz Sanchez, Orlen"]
[Result "1/2-1/2"]
[ECO "B91"]
[WhiteElo "2250"]
[BlackElo "2455"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,51,16,46,-2,3,0,28,34,37,-42,-56,-63,-44,-83,-87,-86,-83,-81,-83,-79,-85,-72,-64,-66,-45,-69,-14,-22,-10,-28,9,9,19,21]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O Be6 10. a4 Nc6 11. Be3 {B91: Sicilian Najdorf: 6 g3} Ng4 12. Bd2 Rc8 13. h3 {White has an edge.} Nf6 14. Be3 (14. Nd5 $14) 14... Nb4 $1 $15 15. f4 Bc4 $36 {[%mdl 2048] Black is more active.} 16. Qd2 $146 (16. Rf2 Qa5 17. Rc1 d5 18. fxe5 Nxe4 19. Nxe4 dxe4 20. b3 Be6 21. Bxe4 {0-1 (41) Estrin,Y (2450)-Pytel,K (2405) Lublin 1974}) 16... d5 17. exd5 Nfxd5 18. Nxd5 Nxd5 19. Bxd5 Qxd5 20. Qxd5 Bxd5 21. c3 Bc4 22. Rfe1 exf4 (22... f6 $15) 23. Nxf4 $11 Bb3 24. Ne2 Bd6 25. Nd4 Bc4 26. Nf5 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Cordova, Emilio"]
[Black "Otero Acosta, Diasmany"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2645"]
[BlackElo "2438"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,95,25,21,39,12,30,24,31,19,16,16,28,19,38,30,33,28,28,18,21,10,57,61,58,61,45,21,57,63,77,60,77,80,107,105,116,107,152,148,145,127,186,143,327,300,300,297,294,255,254,264,254,167,174,156,143,128,129,124,1416,1425,1413,1425,1420,1408,1382,1382,1184,953,5206,5197,5181,5181,5181,4482,1527,266,5397,1755,10476,6374,6095,6087]} 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. d4 O-O 6. Qc2 Nc6 7. a3 {E06: Closed Catalan: Early deviations} (7. O-O Nb4 8. Qb3 a5 9. a3 Nc6 10. Bf4 a4 11. Qc2 dxc4 12. Qxc4 Nd5 13. Nc3 Nb6 14. Qd3 Bd7 {1-0 (70) Topalov,V (2772)-Kasimdzhanov,R (2677) Leon 2007}) 7... dxc4 8. Qxc4 {LiveBook: 4 Games} Qd5 9. Nbd2 {White is slightly better.} b6 $146 (9... Rd8 10. e3 a5 11. O-O a4 12. Qc2 Qf5 13. Qd1 Qb5 14. Nb1 e5 {½-½ (31) Chernin,A (2615)-Speelman,J (2600) New York 1994}) 10. b3 (10. Nh4 $2 Qxc4 11. Nxc4 Nxd4 12. Bxa8 Nc2+ 13. Kf1 Nxa1 $19) 10... Bb7 {White must now prevent ...Nxd4!} 11. Bb2 Rac8 12. O-O Na5 13. Qxd5 Bxd5 14. b4 Nc4 15. Nxc4 Bxc4 16. Rfe1 c5 17. Ne5 cxd4 18. Nc6 $36 {[%mdl 2048] Black is under pressure.} ({But not} 18. Nxc4 Rxc4 19. Rec1 Rfc8 $15) 18... Rc7 $1 19. Rac1 Bd5 20. Bxd4 {Hoping for Bxd5.} Bxg2 21. Kxg2 {Strongly threatening Be5.} Ra8 22. Red1 Kf8 23. a4 Ne8 24. b5 f6 25. e4 {[%cal Be2e4,Be4e5][%mdl 32]} Bd6 26. Be3 Be7 27. h4 Kf7 (27... Rb7 $16 28. e5 fxe5 29. Nxe5 Rc7 30. Rxc7 Nxc7) 28. e5 f5 $2 (28... fxe5 $16 29. Nxe5+ Kf8) 29. Rd3 Rac8 30. Rcd1 Kf8 31. Rd7 Rxd7 32. Rxd7 Rc7 33. Rxc7 ({Weaker is} 33. Rxe7 Rxe7 34. Nxe7 Kxe7 $14) 33... Nxc7 34. Nxa7 $18 {[%mdl 4096] Endgame KBN-KBN} Nd5 35. Nc8 Nxe3+ 36. fxe3 $16 {KB-KN} Bc5 $2 {[%mdl 8192] [#]} (36... Bd8 $16 37. Kf3 g6) 37. a5 $1 $18 {[%mdl 512]} bxa5 38. b6 Bxb6 39. Nxb6 {KN-KP} Ke8 40. Kf3 Kd8 41. e4 fxe4+ 42. Kxe4 Kc7 43. Nc4 a4 44. Kd4 Kc6 45. Na3 Kb6 $2 (45... h5 46. Kc4 Kb6) 46. Kc4 (46. g4 $142 Kc6 47. Kc4) 46... Kc6 47. Nb5 Kb6 48. g4 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Cofre Archibold, Nestor"]
[Result "1/2-1/2"]
[ECO "A65"]
[WhiteElo "2517"]
[BlackElo "2256"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,59,44,30,49,-72,-70,-83,-68,-89,-55,-101,-73,-94,-96,-98,-104,-105,-110,-170,-88,-208,-201,-208,-164,-190,-165,-175,-120,-114,0,0,0,0,59,53,125,92,394,427,2894,2482,29990,29991]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 O-O 9. O-O Re8 10. h3 {LiveBook: 31 Games} Nbd7 {A65: Modern Benoni: 6 e4} 11. f4 (11. Ng3 $14 {keeps the upper hand.}) (11. Ng3 a6 12. a4 Rb8 13. f4 c4 14. Bxc4 b5 15. axb5 axb5 16. Bxb5 Rxb5 17. Nxb5 Qb6+ 18. Nd4 Nxe4 19. Nge2 Ba6 20. Kh2 Bxd4 21. Rxa6 Qxa6 22. Nxd4 Ndf6 23. f5 Nxd5 24. Qf3 Ndf6 25. fxg6 {½-½ (25) Weber,J (2575)-Rubinas,P (2574) ICCF email 2010}) 11... c4 $1 $17 {[%cal Rc4d3]} 12. Bc2 b5 {[%cal Bb7b5,Bb5b4][%mdl 32] Black is better.} 13. a3 Qb6+ $146 (13... Nc5 14. Ng3 Rb8 15. Qf3 a5 16. Be3 Nfd7 17. Rab1 b4 18. axb4 axb4 {0-1 (27) Reisel,F (2085)-Balogh,P (1955) Slovakia 2012}) 14. Kh1 a5 $1 15. Ng3 Ba6 $1 16. Qf3 b4 $36 {[%mdl 2048] Black is in control.} 17. Be3 Qb7 18. Nce2 {[#]} (18. axb4 $17 axb4 19. Nce2) 18... h5 ({Black should try} 18... c3 $1 $19 {[%cal Rc3b2][%mdl 512]} 19. b3 (19. bxc3 b3) 19... h5) 19. e5 (19. axb4 $17 h4 20. bxa5) 19... dxe5 $19 {Hoping for ...c3.} 20. f5 e4 (20... Qxd5 21. fxg6 fxg6 22. Bxg6 Qxf3 23. Rxf3 $17) 21. Nxe4 Nxe4 (21... Qxd5 22. fxg6 fxg6 23. Rad1 $14 (23. Nxf6+ $2 Nxf6 24. Nd4 c3 25. bxc3 Bxf1 26. Qxf1 Kh7 $19)) (21... Ne5 22. Nxf6+ Bxf6 23. Qf2 $11 (23. Qg3 $2 h4 24. Qf2 g5 25. axb4 axb4 $19)) 22. fxg6 f5 (22... Ndf6 $19 {And now ...c3 would win.} 23. Bxe4 c3) 23. Bxe4 $17 {[#]} (23. axb4 $2 c3 24. Bxe4 cxb2 25. Bxf5 bxa1=Q $19) 23... Rxe4 ({Better is} 23... Nf6 $1 $17 24. Bc2 (24. Bxf5 Qxd5 25. Qf4 c3 $19) 24... Qxd5) 24. Ng3 $11 Nf6 {...c3 is the strong threat.} 25. Bg5 c3 ({Black should play} 25... Re5 $11 26. Bxf6 Bxf6 27. Nxf5 Rf8 28. Qxh5 (28. Nh6+ Kg7 29. Nf7 Rxf7 30. gxf7 Qxf7 $15) 28... c3 29. bxc3 bxc3) 26. Bxf6 $1 $14 Bxf1 (26... cxb2 $14 27. Bxb2 Bxf1 28. Rxf1 Bxb2) 27. Rxf1 $16 cxb2 $2 {[%mdl 8192]} (27... Rf8 $16 {is more resistant.} 28. Bxg7 (28. Nxe4 $2 fxe4 29. Qxh5 Bxf6 30. bxc3 bxa3 $19) (28. Nxf5 Rxf6 29. Qxe4 cxb2 30. axb4 Qxb4 $16) (28. Qxf5 Re3 29. Qxh5 Bxf6 $11) (28. Qxh5 Bxf6 29. Nxf5 cxb2 $11) 28... Qxg7) 28. Nxf5 $18 ({And not} 28. Nxe4 fxe4 29. Qb3 (29. Qxe4 $2 Qa6 30. Rg1 Qxf6 $19) 29... a4 30. Qxb2 Rf8 $11) 28... Rae8 (28... Bxf6 $142 29. Qxe4 Qd7) 29. Bxg7 Re1 30. Bxb2 {[%mdl 32768] An unexpected result.} 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1/2-1/2"]
[ECO "C19"]
[WhiteElo "2499"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,78,-7,0,0,9,3,27,0,0,0,0,0,0,0,0,-46,-58,-43,-25,-20,-18,-29,-7,-13,-20,-20,-20,-17,-19,-64,0,-113,-51,-73,-60,-92,-82,-112,-112,-111,-101,-100,-94,-117,-90,-86,-88,-139,-135,-127,-129,-156,-164,-182,-182,-192,-147,-147,-141,-150,-150,-150,-147,-145,-137,-131,-128]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 h6 8. a4 {C19: French: 3 Nc3 Bb4: Main line: 7 Nf3 and 7 a4} Qa5 (8... O-O 9. Bd3 b6 10. Ba3 Qc7 11. O-O Ba6 12. Bxa6 Nxa6 13. Qe2 Nb8 14. c4 dxc4 15. dxc5 bxc5 16. Qxc4 Nd7 17. Rfe1 Rac8 18. Rab1 Rfd8 19. Rb3 Ng6 {0-1 (45) Aroshidze,L (2517)-Vocaturo,D (2606) Sitges 2016}) 9. Qd2 O-O 10. Bd3 {White has an edge.} b6 $146 (10... Re8 11. O-O c4 12. Be2 b5 13. Ba3 bxa4 14. Bb4 Qa6 15. Ra2 Bd7 16. Nh4 {½-½ (35) Parisi,G-Balshaw,A (2157) ICCF email 2010}) 11. Ba3 {[#] Bb4! is the strong threat.} Qxa4 12. O-O Qc6 13. dxc5 bxc5 14. c4 dxc4 15. Bxc4 Nf5 16. Bd3 Bb7 17. Rfe1 Nd7 18. Qf4 Rfe8 19. Bxf5 exf5 20. Qxf5 Re6 21. Bb2 a5 ({Black should play} 21... Nf8 $15) 22. Rad1 (22. Nh4 $11 {remains equal.}) 22... Rae8 (22... a4 $17 23. Rd3 Rae8) 23. Ba1 a4 {[%cal Ba5a4,Ba4a3][%mdl 32]} 24. Re3 Nb6 {[%cal Bd7b6,Bb6c4,Bc4b2][%mdl 32]} 25. h3 Nc4 26. Re2 a3 $36 {[%mdl 2048] Black has strong initiative.} 27. Qf4 Nb2 28. Rb1 Qa6 29. Re3 Bd5 {Hoping for ...Nc4.} 30. Nd2 (30. Nh4 $142) 30... Nc4 $17 31. Rd3 Nxd2 32. Qxd2 a2 {Black is clearly better.} 33. Re1 Bc4 34. Rd7 Qc6 35. f4 {intending f5.} Rg6 {Threatens to win with ...Rxg2+!} 36. Rd6 Rxd6 37. exd6 {Black must now prevent Rxe8+.} Rxe1+ 38. Qxe1 {And now Qc3 would win.} Qxd6 39. Qc3 {[%csl Ga1][%cal Rc3g7] [#]} Qd4+ $1 {[%mdl 512]} 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Ruiz Sanchez, Orlen"]
[Black "Gracia Alvarez, Gerardo An"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2455"]
[BlackElo "2251"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,119,18,26,-14,16,0,0,-16,9,-7,0,0,7,8,8,0,0,-8,0,-30,-30,-53,-54,-84,-90,-64,-61,-66,0,0,0,0,0,0,0,-7,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,0,-22,-22,-17,-13,-22,-8,-22,-32,-57,-7,-8,-19,-43,0,0,0,0,0,0,164,149,428,395,1097,964,1686,1319,1632,1650,1507,1373,1473,1000,29958,29943,5608,-335,5089,-29981,5061,2697,4858,2126,29991,3804,2106,2097,1495,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 h5 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} 10. Nc3 Ke8 11. Bf4 (11. Bg5 Be6 12. Rad1 Be7 13. b3 h4 14. Rfe1 a5 15. Rd3 Rd8 16. Rxd8+ Kxd8 17. Ne2 Bd5 18. Bxe7+ Kxe7 {½-½ (49) So,W (2822)-Caruana,F (2817) Saint Louis 2017}) 11... Be6 {LiveBook: 13 Games. The position is equal.} 12. a3 $146 (12. Rad1 Be7 13. Ng5 Rh6 14. g3 Bxg5 15. Bxg5 Rg6 16. Bf4 Nh4 17. Kh2 Nf3+ 18. Kg2 Nh4+ 19. Kh2 Nf3+ 20. Kg2 Nh4+ {½-½ (20) Gharamian,T (2626)-Andriasian,Z (2622) Bastia 2016}) 12... h4 13. Rad1 Be7 14. Bg5 Rh5 15. Bxe7 (15. Bc1 $5 {is interesting.} Rd8 16. Rfe1 a6 17. Ne2 Bd5 18. Nh2) 15... Kxe7 16. Rfe1 b6 17. Ne2 Bd5 18. Nh2 Rhh8 19. Nf4 Rad8 20. Ng4 {Threatening e6.} Be6 21. f3 c5 22. Nxe6 Kxe6 23. Kf2 Rd4 24. c3 Rdd8 (24... Rxd1 $15 25. Rxd1 g5) 25. f4 $11 c6 26. Nh2 Rd5 27. Nf3 Rhd8 28. Rxd5 (28. Rb1 $5 {seems wilder.} Ke7 29. Ra1 R5d7 30. Rac1 Rd3 31. a4) 28... cxd5 {[%mdl 4096] Endgame KRN-KRN} 29. Rd1 f6 30. Re1 Kf7 31. Rd1 Ke6 32. Re1 Kd7 33. a4 Kc6 34. Ke2 d4 35. cxd4 Nxd4+ 36. Kf2 Nf5 37. exf6 gxf6 38. Re6+ $1 Rd6 39. Re8 Kd5 40. b3 c4 41. bxc4+ Kxc4 42. Rh8 $1 Kb4 43. Nxh4 Nxh4 44. Rxh4 {aiming for g4.} Kxa4 {...b5 is the strong threat. KR-KR} 45. g4 {Black must now prevent g5.} a5 $2 {[#]} (45... b5 $11 {and Black has nothing to worry.}) 46. g5 $18 fxg5 $2 {[%mdl 8192]} (46... Rd2+ $16 47. Ke3 Rd8) 47. fxg5+ {[%cal Bf4g5,Bg5g6][%mdl 32]} Kb5 $2 (47... Kb3 48. Rh6 Rd8) 48. Rg4 a4 49. g6 Rd8 50. h4 {[%cal Bh3h4,Bh4h5][%mdl 32]} ({Weaker is} 50. g7 Rg8 $11) 50... a3 51. h5 Rd2+ 52. Ke3 Rd1 53. Rg2 Re1+ 54. Kf2 $4 {[%mdl 8192] [#]} (54. Kf4 $18 {is the narrow road to win.} Rc1 55. g7 Rc4+ 56. Kg5 Rc5+ 57. Kf4 Rxh5 58. g8=Q Rh4+ 59. Ke5) 54... Rd1 $4 {[%mdl 8192]} (54... a2 $19 55. Kxe1 (55. Rg5+ $2 Kc6 56. Kxe1 a1=Q+ $19) 55... a1=Q+ 56. Kf2 Qf6+ 57. Kg3 Qg5+ 58. Kf2 Qc5+ 59. Ke1 Qxh5) 55. Rg4 $4 {[%mdl 8192]} (55. Rg5+ $18 Kb4 56. g7) 55... Rd8 $4 {[%mdl 8192]} (55... a2 {avoids the disaster.} 56. Rg5+ Kc6 57. Rg1 a1=Q 58. Rxd1 Qxd1 59. h6 Qd2+ 60. Kf3 Qxh6 61. Ke4 Qxg6+ 62. Kf3 Kd5 63. Ke3 Qe4+ 64. Kf2 Kd4 65. Kf1 Ke3 66. Kg1 Qc2 67. Kh1 Kf3 68. Kg1 Qg2#) 56. Rg1 a2 57. Ke3 (57. g7 $142 Rd2+ 58. Ke3) 57... Rd2 58. Kf3 (58. Kxd2 $142 Kc5 59. h6 Kd6 60. g7 a1=Q 61. Rxa1 Kc6 62. g8=Q Kd6 63. h7) 58... Rd3+ 59. Kf4 Rd2 60. Kf3 $2 {[%mdl 32768] Loss on time?} ({Only move:} 60. g7 $18) 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Fernandez Cardoso, Alexey"]
[Black "Macieja, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2445"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 8,90,-4,0,10,8,0,-1,-10,-35,-35,-25,-8,-31,-40,-61,-66,-64,-63,-156,-147,-184,-188,-183,-198,-185,-122,-115,-119,-113,-19,-23,-21,-25,0,-5,0,0,0,0,0,-4,0,0,0,0,8,-44,0,0,0,0,0,0,7,12,22,28,43,6,6,6,6,6,6,0,0,0,24,18,23,10,29,0,25,0,0,0,0,0,0,0,8,8,28]} 1. e4 c6 2. Ne2 d5 3. e5 c5 4. c3 Nc6 5. d4 a6 {B12: Caro-Kann: Advance Variation} 6. Be3 Nh6 7. Bxh6 $146 (7. Ng3 Nf5 8. Nxf5 Bxf5 9. Bd3 Bxd3 10. Qxd3 Qb6 11. Qe2 Qb5 12. Qd2 e6 13. Na3 {0-1 (40) Can,E (2487)-Macieja,B (2619) Aix les Bains 2011}) 7... gxh6 8. a3 Bg4 {[%cal Bc8g4,Bg4h5,Bh5g6][%mdl 32]} 9. f3 Bh5 10. b4 cxd4 11. cxd4 e6 12. Nbc3 f6 13. Ng3 ({Don't play} 13. Nf4 Bf7 14. Rc1 Bg7 $17) (13. f4 $15) 13... Bg6 $17 14. f4 fxe5 15. dxe5 Qh4 16. Qd2 Bg7 (16... h5 $1 $19 {Threatens to win with ...Bh6.} 17. b5 axb5 18. Bxb5 Bc5) 17. Be2 d4 18. Na4 {[%cal Bc3a4,Ba4b2,Bb2d3][%mdl 32] [#]} O-O (18... d3 $1 $17 {[%cal Rd3e2][%mdl 512]} 19. Bxd3 (19. Nc5 $2 O-O 20. Bxd3 Nxe5 21. Bxg6 Nxg6 $19) 19... O-O-O) 19. O-O $11 {[#] Black must now prevent Bc4.} d3 $1 {[%mdl 512]} 20. Bxd3 Rad8 21. Nb2 Bxd3 22. Nxd3 Nxe5 $1 23. fxe5 Qd4+ 24. Kh1 {aiming for Rxf8+.} Rxf1+ 25. Rxf1 {Hoping for Rd1.} Qxd3 26. Qc1 Qd5 27. Qc7 ({White should play} 27. Nh5 $11 Qxe5 28. Nxg7) 27... Qd7 28. Qc3 Rc8 29. Qe3 Qb5 30. Qe4 Rf8 31. Re1 Rd8 32. Qg4 {And now Nh5 would win.} Qe8 33. Nh5 {[%csl Gh5][%cal Rg4g7]} Qg6 34. Nf6+ Bxf6 35. Qxe6+ Qf7 36. Qxf7+ Kxf7 {[%mdl 4096] Endgame KRB-KR} 37. Rf1 Ke6 38. exf6 {KR-KR} Rf8 39. Re1+ Kd6 40. Rf1 (40. g3 $5 {with more complications.} Rxf6 41. Kg2 b6 42. Rc1 Rf5 43. Rc4) 40... Ke6 41. f7 (41. g3 $5 {is interesting.} Rxf6 42. Rc1 Rf3 43. Rc7 Rf7 44. Rc5) 41... Rxf7 {The position is equal.} 42. Rxf7 Kxf7 43. g4 Ke6 44. Kg2 Kd5 $1 45. Kg3 {Strongly threatening Kh4.} Kc4 1/2-1/2

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Figueredo Losada, Leonel"]
[Black "Benitez Lozano, Javier"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2395"]
[BlackElo "2270"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 0,1,32,16]} 1. Nf3 {[%mdl 32768] LiveBook: 182080 Games. Loss on time?} d5 $146 2. d4 Nf6 3. c4 c6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 a6 10. Rc1 dxc4 11. Bxc4 Nbd7 12. a4 Be7 13. g3 Bh5 14. O-O O-O 15. Ng2 Rad8 16. Nf4 Kh8 {½-½ (34) So,W (2822)-Caruana,F (2817) chess.com INT 2017} 1-0

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Garcia Guerrero, Isaac Antonio"]
[Black "Obregon Rivero, Juan Carlos"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2332"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 6,46,-5,-10,6,-68,-54,-95,-76,-136,-146,-167,-138,-143,-131,-127,-14,-28,-19,-21,36,39,34,34,41,29,39,-63,-55,-59,-56,-61,-64,-64,-38,-292,-305,-303,-253,-1053,-1035,-1017,-1014]} 1. d4 g6 2. e4 Bg7 3. h4 d5 4. e5 h5 {B06: Modern Defence} (4... c5 5. c3 Nc6 6. h5 Nh6 7. Bb5 Qb6 8. a4 Bd7 9. Nf3 cxd4 10. cxd4 Bg4 11. Nc3 Rd8 12. a5 Qc7 {0-1 (38) Morozevich,A (2683)-Bologan,V (2640) Sochi 2016}) 5. Nh3 (5. Nc3 $11) 5... c5 $15 6. Ng5 cxd4 $146 {Black is better.} (6... Nc6 7. e6 Nh6 8. Bd3 f5 9. g4 c4 10. Bxf5 gxf5 11. gxf5 O-O 12. Qxh5 Rxf5 {1-0 (19) Chepel,M (2132)-Gaboev,B (2124) Moscow 2007}) 7. e6 (7. Bb5+ $142 Nc6 8. Qxd4) 7... Nh6 ({Not} 7... fxe6 8. Qd3 Kf8 9. Qxg6 $14) 8. Bd3 {Threatening exf7+.} Qb6 9. exf7+ Nxf7 10. Qf3 Ne5 (10... Nxg5 $17 11. Bxg5 Qe6+ 12. Kf1 Nc6) 11. Qxd5 $11 Nxd3+ 12. cxd3 Qf6 (12... Rf8 $11) 13. O-O Qf5 14. Qb3 Na6 {[%cal Bb8a6,Ba6c5,Bc5e4][%mdl 32]} 15. Nd2 {Black must now prevent Nde4.} Nc5 16. Qc4 (16. Qa3 $14) 16... b6 $1 $15 17. b4 $1 {[%cal Rb4c5]} Ba6 {[%cal Bc8a6,Ba6b7,Bb7e4][%mdl 32]} 18. b5 Bb7 {[#] And now ...Bd5 would win.} 19. Nde4 $1 Rc8 {...Bd5 is the strong threat.} 20. Re1 $2 {[%mdl 8192]} ({White should play} 20. Nxc5 $15 bxc5 21. Qa4) 20... Nxe4 $19 21. Nxe4 {aiming for Nd6+.} Bxe4 22. Qb4 $2 {[#]} (22. dxe4 Qxf2+ 23. Kxf2 Rxc4 24. Bg5) 22... Rc2 23. Bd2 O-O 0-1

[Event "LXIII MEX-ch Open Leon 2017"]
[Site "Leon"]
[Date "2017.04.16"]
[Round "9"]
[White "Tello Chavez, Isaac Valent"]
[Black "Gonzalez Vidal, Yuri"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2286"]
[BlackElo "2534"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "MEX"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,110,16,41,17,16,0,0,0,0,-20,-22,-21,-29,-26,-22,-31,-27,-45,-37,-93,-88,-98,-89,-101,-46,-51,-53,-52,-45,-50,-54,-115,-115,-115,-114,-114,-114,-114,-115,-150,-147,-140,-100,-105,-110,-129,-129,-129,-129,-131,-133,-131,-129,-129,-129,-129,-114,-119,-123,-133,-133,-133,-133,-146,-121,-146,-146,-146,-146,-160,-160,-160,-160,-160,-160,-160,-160,-405,-398,-383,-383,-775,-705,-1150,-1165,-963,-856,-1877,-1573,-29983,-29984,-29984,-29985,-29983,-29983]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 c5 5. Bd3 Nf6 6. c3 {A45: Trompowsky Attack} Nc6 7. Nd2 Bg4 (7... g6 8. h3 Bg7 9. Ngf3 Nd7 10. O-O O-O 11. Bb5 Qb6 12. Qb3 Re8 13. Ba4 c4 {½-½ (76) Vitiugov,N (2726)-Tari,A (2584) Doha 2016}) 8. Ngf3 e6 9. O-O Bd6 {LiveBook: 4 Games} 10. dxc5 Bxc5 11. e4 $146 (11. Qa4 O-O 12. Ne5 Nxe5 13. Bxe5 Bh5 {0-1 (29) Eliet,N (2408)-Degraeve,J (2536) Gonfreville 1999}) 11... O-O 12. Qc2 h6 13. Ne5 Nh5 14. Nxc6 bxc6 15. Be3 Bxe3 16. fxe3 Qg5 17. Rae1 $1 Rad8 18. Nf3 (18. c4 $15) 18... Bxf3 $1 $17 19. Rxf3 Nf6 $36 {[%mdl 2048] White is under strong pressure.} ({Much worse is} 19... dxe4 20. Bxe4 Nf6 21. Bxc6 $15) 20. Rf4 Ng4 ({Better is} 20... Rd7 $17 21. exd5 Nxd5) 21. Qe2 $15 Ne5 22. exd5 Rxd5 23. Rd4 c5 24. c4 (24. Rxd5 $15 exd5 25. c4) 24... cxd4 $17 25. cxd5 Nxd3 26. Qxd3 Qxd5 27. Qxd4 Qxa2 {[%mdl 4096] Endgame KQR-KQR} 28. Rc1 Rb8 29. b4 a6 30. Qd6 Rb5 31. Rc8+ Kh7 32. Qd3+ Rf5 {( -> ...Qa1+)} 33. h3 Qa1+ 34. Kh2 Qe5+ 35. Kg1 g6 36. Qc3 Qxc3 37. Rxc3 {KR-KR} Rb5 38. Rc6 Rxb4 39. Rxa6 Rb2 40. Ra3 h5 41. Ra4 Re2 42. Re4 g5 {[%cal Bg6g5,Bg5g4][%mdl 32]} 43. h4 g4 $1 44. Kh2 Kg6 45. Re5 Rd2 46. Rg5+ Kh6 47. Kg3 $2 {[#]} (47. Ra5 $17 {keeps fighting.}) 47... f6 $1 $19 {[%cal Rf6g5]} 48. Rg8 Re2 49. Kf4 $2 (49. Rh8+ Kg6 50. e4) 49... Rxg2 50. Re8 Rf2+ 51. Ke4 e5 52. Kd5 Kg7 53. Ke6 g3 {Black mates.} 54. Re7+ {[#]} Kf8 $1 55. Rf7+ Kg8 0-1

