[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Mareco, Sandro"]
[Black "Sica, Mauro"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2655"]
[BlackElo "2142"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,59,41,54,47,46,21,25,25,32,23,25,15,49,48,63,60,64,39,41,28,54,57,111,111,117,112,167,156,160,159,182,171,419,398,577,577,583,545,588,588,575,571,587,593,595,595]} 1. Nf3 d6 2. d4 f5 3. g3 g6 4. Bg2 Nf6 5. O-O Bg7 6. b3 O-O 7. Bb2 Ne4 8. c4 c5 {LiveBook: 12 Games. A87: Dutch Defence: Leningrad System: 5 Nf3} (8... Nc6 9. Nbd2 Nxd2 10. Qxd2 e5 11. dxe5 dxe5 12. Qd5+ Kh8 13. Qxd8 Rxd8 14. Rfd1 e4 15. Rxd8+ Nxd8 16. Bxg7+ Kxg7 17. Nd4 Ne6 18. Rd1 Nxd4 19. Rxd4 Be6 20. f3 exf3 21. exf3 c5 {½-½ (32) Heimann,A (2588)-Demuth,A (2527) Bad Ragaz 2017}) 9. Qc1 cxd4 10. Bxd4 $146 ({Predecessor (2):} 10. Nxd4 Qb6 11. Nb5 a6 12. N5c3 Nc6 13. Nxe4 fxe4 14. Bxg7 Kxg7 15. Bxe4 Bh3 16. Bg2 {1-0 (41) Portisch,L-Gasztonyi,E Budapest 1957}) 10... e5 {The position is equal.} 11. Bb2 Nc6 12. Nc3 Nxc3 13. Qxc3 Bf6 14. Qd2 Qe7 15. Rad1 Rd8 16. Ba3 {[%cal Ra3d6]} e4 17. Ne1 $1 Be5 18. Nc2 Be6 {[#]} (18... a5 $14) 19. f3 $1 $16 exf3 20. exf3 {[%cal Be2f3,Bf3f4][%mdl 32] Hoping for f4.} Qg7 (20... f4 $16 {was necessary.}) 21. f4 $18 {Black must now prevent Bxc6.} Bf6 22. Bxd6 Bf7 23. Qf2 Rd7 $2 {[#]} (23... Rac8 24. Bxc6 Rxc6) 24. Bf8 $1 {[%mdl 512]} Rxd1 (24... Qxf8 {might work better.} 25. Rxd7 Be7) (24... Rxf8 25. Rxd7) 25. Bxg7 {White is clearly winning.} Rxf1+ 26. Kxf1 Kxg7 27. Bxc6 bxc6 28. Nb4 Rb8 29. Qc5 Rd8 30. Nxc6 {Precision: White = 88%, Black = 28%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Anino, Sergio"]
[Result "1-0"]
[ECO "C60"]
[WhiteElo "2554"]
[BlackElo "2159"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,67,25,18,18,31,18,17,13,17,12,72,79,96,34,42,37,37,39,31,0,7,10,22,10,25,0,14,27,37,33,96,94,93,93,175,123,107,70,149,139,137,85,227,227,1112,1066,5281,5255]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 exd4 6. cxd4 d5 7. exd5 Nxd5 8. O-O Bg7 9. Re1+ Be6 10. Bg5 Qd6 11. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4a5][%mdl 32]} O-O 12. Nc4 {C60: Ruy Lopez: Unusual Black 3rd moves and 3...g6} Qb4 13. a4 Rfe8 14. Bd2 {The position is equal.} Qf8 15. Na5 Nxd4 (15... Bg4 $11) 16. Bxe8 $16 Rxe8 $146 ({Predecessor:} 16... Nxf3+ 17. Qxf3 Rxe8 18. Nxb7 Rb8 {1-0 (39) Gharamian,T (2643)-Vul,A (2267) Cappelle la Grande 2016}) 17. h3 (17. Nxb7 $16 Rb8 18. Na5 (18. Nxd4 Bxd4 19. Na5 Rxb2 $11)) 17... b6 $14 18. Nc4 c5 19. Rc1 h6 20. b3 Rd8 21. Nxd4 Bxd4 22. Qf3 Nb4 23. Kh1 Qg7 24. Bc3 Bd5 25. Qg3 Bxc4 (25... Nc6 $14) 26. Bxd4 $16 Rxd4 27. Rxc4 Nc6 {[#]} (27... Rd7 $16 {was called for.}) 28. Qc7 (28. Re8+ $1 $18 Kh7 29. Rxd4 Qxd4 30. Qf3) 28... Qf6 29. Kg1 Kg7 (29... Rxc4 $14 30. bxc4 Kg7) 30. Rxd4 Nxd4 31. Re3 ({White should try} 31. a5) 31... a6 (31... Nc6 $16 {was necessary.}) 32. a5 $18 {[%cal Ba4a5,Ba5b6][%mdl 32]} Nf5 $2 {[#]} (32... bxa5 33. Qxc5 (33. Qxa5 Qd6 34. Qc3 Kf8 $16) 33... Nb5) 33. axb6 Nxe3 34. fxe3 {Precision: White = 68%, Black = 33%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Krysa, Leandro"]
[Black "Gimenez, Ismael"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2517"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,77,16,12,18,0,0,-3,0,-24,14,-3,23,-12,-12,-8,-14,-10,-6,-27,24,-31,0,-22,0,0,0,0,0,0,14,16,25,30,20,19,38,0,0,0,117,108,129,58,154,129,299,298,299,304,291,282,437,437,647,643]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8. Nge2 Nh5 9. Bxe7 Qxe7 10. Qd2 {D35: Queen's Gambit Declined: Exchange Variation} g6 11. f3 Nb6 12. O-O O-O 13. Rae1 {LiveBook: 3 Games} Be6 {[#]} 14. g4 $146 ({Predecessor (3):} 14. e4 dxe4 15. fxe4 Rad8 16. b3 Bg4 17. Qe3 f6 {1-0 (39) Ding,L (2782)-Inarkiev,E (2660) Baku 2015}) 14... Ng7 15. Nf4 Rae8 16. Qg2 c5 17. Kh1 a6 18. Qf2 cxd4 $1 19. exd4 Qf6 20. Ng2 Bd7 21. Re5 Bc6 ({Black should try} 21... Qd8) 22. Rfe1 (22. f4 $11) 22... Qd6 23. a3 f6 24. Rxe8 Rxe8 25. Rxe8+ Bxe8 26. Kg1 Bc6 27. Qe3 Qe6 28. Qf4 Qe7 29. Qb8+ Ne8 30. Bxa6 Nd7 $1 {[%cal Rd7b8]} 31. Qa8 Nb6 {[#]} (31... Nf8 $1 $11 32. Bd3 Ne6) 32. Qa7 $1 $16 {[%cal Ra7b6]} Qc7 33. Bf1 (33. Bd3 $16) 33... Nd7 (33... Ng7 $1 $14) 34. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] b5 is the strong threat.} Qb6 $2 (34... Nb6 $16) 35. Qxb6 $18 Nxb6 36. b5 Bd7 37. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Nc7 (37... Nd6 {is a better defense.} 38. a5 Nbc4) 38. a5 Nc4 {[#]} (38... Nc8 $142 39. b6 Na8) 39. Nxd5 $1 {[%mdl 512] Precision: White = 63%, Black = 42%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Balzano, Ivan"]
[Black "Peralta, Fernando"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2150"]
[BlackElo "2565"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,127,20,16,28,23,32,31,30,22,30,22,29,33,45,25,26,0,48,34,166,69,60,0,0,0,0,-49,-16,-35,-22,-108,-77,-85,-72,-85,77,47,150,144,152,158,118,114,177,177,310,185,218,202,190,0,0,-90,-90,-100,-90,-97,-97,-215,-18,-102,-102,-215,-209,-433,-412,-412,-214,-214,-213,-195,0,-397,-13,-154,-100,-107,0,-212,-208,-183,-17,-123,-129,-333,-62,-119,-18,-41,-41,-77,-64,-319,-315,-315,-315,-301,-301,-274,-266,-269,-398,-29986,-29987,-29987,-29988,-29999]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7 11. c3 O-O 12. Qe2 Bd7 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} 13. Re1 Qc7 14. Bg5 (14. Bb3 Bd6 15. h3 Bh2+ 16. Kh1 Bf4 17. Bxf4 Qxf4 18. Rad1 Rfe8 19. Kg1 {1-0 (58) Gomez Garrido,C (2519)-Das,S (2444) Barcelona 2015}) 14... Nd5 {White is slightly better.} 15. Bxe7 Nxe7 16. Rad1 {[%cal Rc4e6]} Rfd8 17. Bb3 $146 ({Predecessor:} 17. h4 Rac8 18. Bb3 Qc5 19. h5 Qg5 {1-0 (37) Garma,C (2280)-Malek,F (2290) Novi Sad 1990}) 17... Qb6 18. Qe3 Be8 19. Qg5 Ng6 20. h4 Nf8 (20... Qc7 $14) 21. h5 (21. Rd3 $18) 21... h6 $1 $14 {[%cal Rh6g5]} 22. Qf4 (22. Qg4 $14) 22... a5 $11 {[%cal Ba7a5,Ba5a4][%mdl 32]} 23. Rd3 {Strongly threatening Rg3.} a4 24. Bc2 (24. Bd1 $5 {[%cal Rd3g3]} Nh7 25. Rg3 $11) 24... Ra5 25. Rg3 {And now Qxh6 would win.} Rxh5 26. Re5 (26. Qf6 $1 $11 {was the only way to keep the balance.} Ng6 27. Qf3) 26... Rxe5 27. Qxe5 {[%csl Gg3][%cal Re5g7]} g6 28. Qf6 {aiming for Nf5!} Qd6 $2 (28... Qc7 $17) 29. Rd3 $1 $16 e5 ({Black should play} 29... Nh7 $14 30. Qh4 Ra8) 30. Ne6 $1 Qxe6 31. Qxd8 Bc6 32. Qh4 Qxa2 (32... e4 $16 33. Rd8 e3) 33. Qxh6 $18 {Threatening mate with Rd8.} Qa1+ (33... Bd7 $142) 34. Kh2 (34. Rd1 $142 Qxb2 35. Rd8) 34... Qf1 {[%csl Gc6][%cal Rf1g2]} 35. f3 {White wants to mate with Rd8.} Ne6 36. Rd6 $2 (36. Rd1 $18 Qc4 37. Kg3 Qf4+ 38. Qxf4 exf4+ 39. Kh4) 36... Bxf3 $1 $40 {[%mdl 128] Black has some attack.} 37. gxf3 (37. Rd2 $11 Bc6 38. Bxg6 $1 {[%mdl 512]} fxg6 39. Qxg6+ Kf8 40. Rd6 Qf4+ 41. Kg1 Qe3+ 42. Kh2 Qf4+ 43. Kg1 Qe3+ 44. Kh2 Qf4+) 37... Qf2+ 38. Kh1 {Threatens to win with Rd2.} Qxc2 $17 {[%mdl 4096] Endgame KQR-KQN} 39. Qd2 Qf5 40. Rd3 (40. Kg2 $17) 40... Kg7 $2 (40... Nf4 $19 41. Re3 b5) 41. Re3 (41. Qe3 $1 $11) 41... Nf4 42. Kg1 {[#]} (42. c4 $17 {is the only way for White.}) 42... b5 $1 $19 43. Kf1 $2 (43. Kh1) 43... Qh5 44. Kg1 Qh4 (44... Qh6 $142 45. Re2 Qg5+ 46. Kf1 Qh5) 45. Qh2 Qg5+ 46. Kf1 Qf5 $2 (46... Qf6 47. Ke1 Qf5) 47. Qd2 $1 Qe6 $2 (47... Qh3+ $19 48. Kg1 Qh6) 48. Kg1 (48. Ke1 $11 {remains equal.}) 48... Qe7 (48... f6 $142 49. Re1 Qh3) 49. Kf1 $17 Qg5 (49... Qh4 $17 {( -> ...Qh1+)} 50. Rxe5 Qh1+ 51. Kf2 {[#]} Nd3+ $1 {[%mdl 512]} 52. Qxd3 Qh2+ 53. Kf1 Qxe5) 50. Qh2 $19 Qf6 51. Qd2 Qc6 $2 (51... Qf5 $19 {White must now prevent ...Qh3+.} 52. Kg1 f6) 52. Re4 (52. Ke1 $1 $11) 52... Qe6 $17 53. Re3 $2 (53. Kf2 $17 {was necessary.}) 53... Nd5 $2 (53... Qh3+ $19 54. Kg1 Qh6) 54. Rd3 ({White should try} 54. Re1 $1 $15) 54... Nb6 (54... Qh3+ $17 55. Kf2 Qh2+ 56. Kf1 Qh3+ 57. Kf2 Qh2+ 58. Kf1 Qh3+) 55. Qf2 Nc4 {...Qf5 is the strong threat.} 56. Kg2 Qe7 (56... Qf5 $5 {[%cal Rf5d3]} 57. Rd1 Qg5+ 58. Kh1 Qf4 $17) 57. Rd5 $2 {[%mdl 8192]} (57. Kh1 $15) 57... Qg5+ $19 58. Kh2 Qh6+ 59. Kg1 Qc1+ 60. Kh2 Nxb2 {Hoping for ...a3.} 61. Rxb5 Nd3 62. Qh4 $2 (62. Qe2 $19 Qxc3 63. Rb8) 62... Qd2+ {Black mates.} 63. Kg1 Nf4 {[%csl Gf4][%cal Rd2g2]} 64. Qh2 Qe1# {Precision: White = 41%, Black = 42%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Villca, Julian"]
[Black "Morovic Fernandez, Ivan"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "2137"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,62,20,-1,10,17,16,17,31,-15,-2,-10,-17,-14,-3,-9,1,-29,-25,-43,0,-13,0,0,6,8,22,0,25,18,28,0,0,-53,-51,-132,-119,-118,-119,-233,-230,-220,-217,-217,-218,-217,-152,-164,-164,-326,-317]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e3 d6 6. Nge2 e5 7. O-O Re8 8. d4 e4 {E61: King's Indian: Early deviations for White, including Smyslov System} (8... Nbd7 9. h3 h5 10. Qc2 c6 11. b3 Nf8 12. Rd1 Qe7 13. e4 Ne6 14. d5 cxd5 15. cxd5 Nc5 16. b4 Na6 17. a3 Bd7 18. Be3 Rec8 19. Qd3 {½-½ (44) Aronian,L (2801)-Grischuk,A (2771) Moscow 2010}) 9. h3 h5 10. Nf4 c6 {The position is equal.} 11. b4 Bf5 12. Bb2 $146 ({Predecessor (2):} 12. b5 Nbd7 13. bxc6 bxc6 14. Qa4 c5 15. Rd1 Nb6 16. Qb3 cxd4 17. exd4 {0-1 (74) Machin Rivera,M (2339)-Amin,B (2661) Baku 2016}) 12... Nbd7 13. Qe2 Rc8 14. a4 a5 15. b5 Nb6 16. Rfc1 c5 {White must now prevent ...cxd4.} 17. Nd1 Qe7 18. Ra2 Rc7 19. Bc3 Ra8 20. Bf1 Nbd7 21. Rd2 Rcc8 22. Nb2 cxd4 23. exd4 ({White should play} 23. Bxd4 $11 Rab8 24. Bg2) 23... Bh6 $15 24. Re1 ({White should try} 24. Nd1 $15) 24... Bxf4 25. gxf4 {[#]} Nd5 $1 {[%cal Rd5c3][%mdl 512]} 26. Nd1 (26. Bxa5 $17 {was necessary.} Nxf4 27. Qe3) (26. cxd5 Rxc3) 26... Nxf4 $19 27. Qe3 Qh4 28. Qg3 Nxh3+ 29. Bxh3 Qxg3+ 30. fxg3 {[#] Strongly threatening Bxf5.} Bxh3 31. Rxe4 $2 (31. Rh2) 31... Rxc4 {Precision: White = 39%, Black = 84%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "1"]
[White "Aguero Arce, Matias"]
[Black "Real De Azua, Ernesto"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2124"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,68,4,7,0,0,-2,-4,-22,-15,-21,-17,-15,-8,-23,-12,-25,-36,-77,-55,-133,-115,-280,-275,-289,-275,-275,-275,-275,-275,-286,-261,-256,-235,-221,-227,-284,-299,-346,-327,-338,-325,-363,-366,-842,-845,-1064,-1012,-1327,-1306,-29976,-29977,-29993,-29994,-29994,-29995,-29995,-29996,-29996,-29997]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 dxc4 5. e3 a6 6. Bxc4 b5 7. Be2 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines} Bb7 8. a3 c5 9. dxc5 {Hoping for Qxd8+.The position is equal.} Qxd1+ 10. Bxd1 {Black should prevent b4.} Bxc5 11. b4 Bd6 12. Bb2 Nbd7 13. Bb3 $146 ({Predecessor:} 13. O-O Ke7 14. Nd2 Nb6 15. Be2 Rac8 {½-½ (43) Rakhmanov,A (2606)-Shimanov,A (2658) Minsk 2014}) 13... Ke7 14. Nd4 Ne5 $36 {[%mdl 2048] ...Nd3+ is the strong threat. Black is more active.} (14... Bxg2 $5 15. Rg1 Bb7 16. Rxg7 Kf8 $17) 15. O-O-O (15. O-O $15) 15... Nfg4 16. Rd2 $2 {[#]} (16. Rhf1 $17 {keeps fighting.}) 16... Nxf2 $1 $19 {[%mdl 512]} 17. Rf1 (17. Rxf2 Nd3+) 17... Nfd3+ 18. Kc2 Nxb2 19. Kxb2 Rhd8 20. h3 Rac8 21. g4 Nc4+ 22. Bxc4 Rxc4 23. g5 Be5 24. Rdf2 f5 25. gxf6+ Bxf6 26. Nce2 Be4 27. Kb3 $2 (27. Nc3 Bf5 28. h4) 27... e5 {[%cal Be6e5,Be5d4,Bd4e3,Be3e2][%mdl 32]} 28. Ng3 exd4 29. Nxe4 dxe3 30. Rf4 e2 {Black mates.} 31. Re1 Rd3+ 32. Ka2 Rc2+ 33. Kb1 Rb2+ 34. Kc1 {[#]} Rd1+ $1 {Precision: White = 34%, Black = 95%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Sica, Mauro"]
[Result "*"]
[ECO "A04"]
[WhiteElo "2648"]
[BlackElo "2154"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,15,36,38]} 1. Nf3 d6 2. d4 f5 3. g3 g6 4. Bg2 Nf6 5. O-O Bg7 6. b3 O-O 7. Bb2 Ne4 8. c4 {Predecessor (50):} Nc6 $146 9. Nbd2 Nxd2 10. Qxd2 e5 11. dxe5 dxe5 12. Qd5+ Kh8 13. Qxd8 Rxd8 14. Rfd1 e4 15. Rxd8+ Nxd8 16. Bxg7+ Kxg7 17. Nd4 Ne6 18. Rd1 Nxd4 19. Rxd4 Be6 20. f3 exf3 21. exf3 c5 {½-½ (32) Heimann,A (2588)-Demuth,A (2527) Bad Ragaz 2017} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "2"]
[White "Peralta, Fernando"]
[Black "Lopez Azambuja, Nicolas"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "2571"]
[BlackElo "2296"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 8,75,8,-4,-2,0,-1,-1,-1,-1,-2,-4,0,0,0,4,9,0,8,0,0,0,0,0,0,0,0,-17,5,0,-1,-8,0,-16,-13,-28,-33,-45,-51,-35,-46,-100,0,0,0,1,0,0,52,0,0,0,0,0,0,0,0,0,19,9,70,58,72,46,95,93,101,87,988,945]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 c6 {E46: Nimzo-Indian: Rubinstein: 4 e3 0-0 5 Ne2 without early Bd3} (5... Re8 6. a3 Bf8 7. Ng3 d5 8. Be2 b6 9. cxd5 exd5 10. b4 Bb7 11. O-O Nbd7 12. Qb3 c6 13. Bf3 a6 14. Rd1 b5 15. e4 Nb6 {0-1 (51) Gupta,A (2627)-Wei,Y (2725) Liaocheng 2017}) 6. a3 Ba5 7. Qc2 d5 {The position is equal.} 8. Ng3 Nbd7 9. Be2 dxc4 10. Bxc4 e5 11. O-O exd4 12. exd4 Nb6 13. Ba2 {aiming for b4.} Nbd5 $146 ({Not} 13... Qxd4 $2 14. b4 $18) 14. Bg5 h6 15. Bxf6 Nxf6 16. Rad1 Re8 17. d5 cxd5 18. Nxd5 Be6 19. Nxf6+ Qxf6 20. Bb1 (20. Ne4 $5 {[%cal Re4f6]} Qe5 21. Nd6 (21. Bxe6 Rxe6 22. Ng3 Bb6 $15) 21... Bxa2 22. Nxe8 Rxe8 23. b4 $15) 20... g6 21. Ne4 Qg7 22. Nd6 Re7 23. b4 Bc7 24. Nxb7 {[#]} (24. Qe2 $15) 24... Bxh2+ (24... Qe5 $1 $17 {[%csl Gc7][%cal Re5h2]} 25. f4 Qe3+ 26. Qf2 Qxa3) 25. Kxh2 $11 {Threatens to win with Nc5.} Rxb7 26. Qc6 Rab8 27. Kg1 Qb2 {[#]} (27... Re7 $11) 28. Qa6 ({White should play} 28. Bxg6 $1 $14 {[%mdl 512]} Rb6 (28... fxg6 29. Qxe6+) 29. Qc2 Qxa3 30. Rd3 Qxb4 31. Rg3) 28... Kg7 29. Rfe1 Qf6 (29... Bg4 $5 {[%cal Rg4d1]} 30. f3 Be6 $11) 30. Be4 {[%cal Bb1e4,Be4f3,Bf3c6][%mdl 32]} Rc7 31. Bf3 Rb6 32. Qa5 Re7 33. Qc5 $36 {[%mdl 2048] White fights for an advantage.} Rb8 ({Better is} 33... Ra6 $11) 34. b5 $14 Rc8 35. Bc6 Rec7 36. a4 Qg5 37. Re5 Qg4 $2 {[%mdl 8192]} (37... Qh4 $16) 38. Rd4 {Precision: White = 83%, Black = 62%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "2"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Anino, Sergio"]
[Result "*"]
[ECO "C07"]
[WhiteElo "2554"]
[BlackElo "2150"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,16,21,11]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 {Predecessor (50):} 9. Nbxd4 $146 Nxd4 10. Nxd4 a6 11. Re1 Qc7 12. Bf1 Be7 13. Qf3 O-O 14. Bf4 Bd6 15. Bxd6 Qxd6 16. Rad1 Qc7 17. c4 Bd7 18. b3 Rfd8 19. Qg3 Qxg3 20. hxg3 {½-½ (49) Movsesian,S (2673)-Vitiugov,N (2726) Tallinn 2016} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "2"]
[White "Krysa, Leandro"]
[Black "Gimenez, Ismael"]
[Result "*"]
[ECO "C60"]
[WhiteElo "2518"]
[BlackElo "2137"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,20,21,22]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 exd4 6. cxd4 d5 7. exd5 Nxd5 8. O-O Bg7 9. Re1+ Be6 10. Bg5 Qd6 {Predecessor (50):} 11. Nbd2 $146 O-O 12. Ne4 Qb4 13. Bxc6 bxc6 14. Qc1 Rfe8 15. Bd2 Qb6 16. Nc5 Bf5 17. Ne5 Re7 18. a4 Bxe5 19. dxe5 Rb8 20. b4 Rbe8 21. Qc4 Rxe5 22. Rxe5 Rxe5 {½-½ (39) Ly,M (2501)-Banusz,T (2616) Abu Dhabi 2016} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "2"]
[White "Pacheco, Daniel"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2279"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,88,12,7,5,-2,-3,-16,-11,-32,-20,-63,-70,-67,-65,-61,-101,-89,-61,-66,-51,-61,-51,-81,-73,-95,-86,-120,-90,-98,-89,-95,-46,-70,0,-14,-5,-76,-63,-92,-72,-62,-66,-52,-63,-52,-24,-96,-108,-104,-101,-119,-99,-220,-114,-253,-249,-223,-223,-468,-466,-668,-676,-671,-663,-661,-647,-767,-761,-702,-645,-644,-644,-638,-639,-822,-809,-1002,-1025,-954,-931]} 1. d4 Nf6 2. Bf4 b6 3. e3 Bb7 4. Nd2 g6 5. Ngf3 Bg7 6. Bd3 {LiveBook: 10 Games} d6 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems} 7. c3 (7. O-O Nbd7 8. e4 O-O 9. Re1 Nh5 10. Be3 e5 11. c3 h6 12. Qc2 a6 13. a4 Kh7 14. Rad1 Qe7 15. b4 Rac8 16. a5 b5 17. dxe5 Nxe5 18. Nxe5 Bxe5 {½-½ (30) Ghosh,D (2485)-Rakhmanov,A (2610) Dubai 2014}) 7... O-O 8. Qe2 Nbd7 {The position is equal.} 9. O-O-O c5 10. e4 $146 ({Predecessor:} 10. h4 h5 11. Kb1 a6 12. a4 Ng4 13. Bc4 d5 14. Bxd5 {0-1 (14) Delgado,L (2295)-Gutierrez Masdeu,J (2280) Barcelona 1999}) 10... cxd4 11. cxd4 e5 12. dxe5 dxe5 13. Be3 Rc8+ 14. Kb1 Nc5 15. Bxc5 $1 Rxc5 16. Nb3 Rc7 17. Ka1 Qe7 18. Ne1 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 19. Nc2 Rd8 20. f3 a4 21. Nc1 Bh6 (21... Rdc8 $15) 22. a3 $11 Nd7 {[%cal Bf6d7,Bd7c5,Bc5b3][%mdl 32] Hoping for ...Nc5.} 23. Na2 (23. Bb5 $11) 23... Nc5 $17 24. Nab4 Rcd7 $36 {[%mdl 2048] Black is really pushing.} 25. Ne3 Bxe3 26. Qxe3 Nb3+ 27. Kb1 Qc5 28. Qg5 (28. Qh6 $1 $11) 28... Kg7 29. Rhe1 Rd4 30. Qe3 ({But not} 30. Nd5 $2 Bxd5 31. Qxd8 Bc4 32. Bxc4 Rxd8 33. Bxb3 Rxd1+ 34. Bxd1 b5 $19) 30... Qd6 31. Qe2 {[#]} (31. h4 $17) 31... Bc6 (31... Rxb4 $1 $19 32. axb4 Qxb4) 32. Bc2 {[#]} (32. Qe3 $17 {was the only defense.}) 32... Nd2+ $1 $19 33. Ka2 ({Weaker is} 33. Ka1 Qc5 34. Bd3 (34. Nxc6 $2 Qxc6 35. Ka2 Qxc2 $19) 34... Nb3+ 35. Kb1 Bb7 $15) 33... Rxb4 34. axb4 $2 (34. Rxd2 Qxd2 35. axb4) 34... Qxb4 {Black is clearly winning.} 35. Bd3 (35. Qe3 $142 Qc4+ 36. Ka1 Qxc2 37. Rc1 Nb3+ 38. Ka2 Nxc1+ 39. Rxc1 Qb3+ 40. Qxb3 axb3+ 41. Kxb3) 35... Qb3+ 36. Ka1 Qxd3 37. Qxd3 Rxd3 38. b3 Nxb3+ 39. Kb2 Nc5 40. Kc2 Rd4 41. Kc3 Nb3 42. Rd3 b5 {[%cal Bb6b5,Bb5b4][%mdl 32]} 43. Rdd1 b4+ 44. Kb2 Bd7 {Precision: White = 49%, Black = 70%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "2"]
[White "Arias, Juan Cruz"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2254"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,46,26,-17,-19,-28,-25,-29,-28,-33,-30,-36,-33,-27,-36,-35,-25,-98,-61,-146,-130,-136,-143,-256,-265,-312,-318,-325,-320,-393,-393,-369,-356]} 1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. f4 b6 7. Nf3 Bb7 8. O-O Qd7 9. Be3 Nh6 {B25: Closed Sicilian: 3 g3, lines without early Be3} (9... f5 10. d4 Nf6 11. d5 Nb4 12. Bh3 O-O 13. Ng5 h5 14. a3 Na6 15. Ne6 Ng4 16. Bxg4 hxg4 17. exf5 gxf5 {½-½ (45) Larino Nieto,D (2464)-Cheparinov,I (2678) Zafra 2009}) 10. h3 f5 11. Qd2 O-O {Black has an edge.} 12. Rae1 Rae8 13. Ng5 e6 $146 ({Predecessor:} 13... Nd4 14. Nd1 e6 15. c3 Nc6 16. Bf2 fxe4 17. Bxe4 {½-½ (31) Angers,G (1997)-Panjwani,R (2222) Kitchener 2006}) 14. Nd1 Nf7 15. Nxf7 Rxf7 16. g4 (16. exf5 $11 Rxf5 17. c3) 16... d5 17. c4 ({White should try} 17. gxf5 $15 gxf5 18. exd5 exd5 19. Bf2 Rxe1 20. Rxe1) 17... fxe4 18. dxe4 dxc4 19. Qc1 (19. e5 $17) 19... Nb4 $19 {[%cal Bc6b4,Bb4d3,Bd3f4,Bf4e2][%mdl 32]} 20. Qxc4 Ba6 21. Qb3 Nd3 22. Re2 Nxf4 ({Don't take} 22... Nc1 23. Bxc1 Bxe2 24. Re1 $19) 23. Rd2 Ne2+ {Precision: White = 34%, Black = 77%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "2"]
[White "Martinez, Ayelen"]
[Black "Krysa, Leandro"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2247"]
[BlackElo "2518"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,74,18,-2,30,0,40,6,12,7,14,8,8,0,25,-12,21,15,8,19,6,-20,-14,-12,-29,-27,0,0,18,-29,-9,0,1,-56,-54,-56,-60,-80,-53,-78,-77,-70,-60,-88,-80,-100,-78,-79,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a3 O-O 9. Nc3 {LiveBook: 399 Games} Qe8 $146 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines} (9... Na5 10. Ba2 Be6 11. b4 Bxa2 12. Rxa2 Nc6 13. Bg5 Nd7 14. Be3 Nf6 15. Bg5 Nd7 16. Be3 Nf6 17. Qb1 {½-½ (51) Vachier Lagrave,M (2796)-Mamedyarov,S (2766) Sharjah 2017}) 10. Re1 Rb8 11. Bd2 Bg4 12. h3 Bxf3 13. Qxf3 Nd4 14. Qg3 Kh8 15. Rac1 Nxb3 (15... b4 $5 {looks sharper.} 16. axb4 Rxb4 17. Nd5 Rb7 18. Nxf6 Bxf6 19. Bd5 Rxb2 20. Bc3 Rb6) 16. cxb3 b4 17. axb4 Rxb4 18. Nd5 Nxd5 19. exd5 Rxb3 20. Rxc7 Rxb2 21. Bc3 Bd8 22. Rc8 Rb5 23. Ra1 h6 24. d4 ({But not} 24. Rxa6 $2 Bh4 $1 {[%mdl 512]} 25. Qxh4 Qxc8 $19) (24. Qg4 $11) 24... Qd7 $36 {[%mdl 2048] Black has some pressure.} 25. Ra8 Qb7 $1 {[%cal Rb7a8]} 26. R1xa6 Qxd5 27. dxe5 dxe5 28. Kh2 Be7 29. Rxf8+ Bxf8 30. Qg4 Qb7 31. Qa4 {[#] Ra8 is the strong threat.} Rc5 (31... Kh7 $1 $17) 32. Ra7 $11 {The position is equal.} Qc6 33. Qxc6 $1 Rxc6 34. Ra8 Rxc3 35. Rxf8+ Kh7 36. Rxf7 Kg6 37. Ra7 h5 {Precision: White = 79%, Black = 58%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "2"]
[White "Balzano, Ivan"]
[Black "Peralta, Fernando"]
[Result "*"]
[ECO "A15"]
[WhiteElo "2151"]
[BlackElo "2571"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,14,11,6]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e3 d6 6. Nge2 e5 7. O-O Re8 {LiveBook: 75 Games} {Predecessor (50):} 8. d3 $146 c6 9. b4 d5 10. cxd5 cxd5 11. Bb2 Nc6 12. b5 Na5 13. Qd2 Bh6 14. f4 e4 15. Rad1 exd3 16. Qxd3 Nc4 {0-1 (69) Gholami,A (2429)-Adhiban,B (2663) Dubai 2016} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.04.30"]
[Round "2"]
[White "Villca, Julian"]
[Black "Morovic Fernandez, Ivan"]
[Result "*"]
[ECO "D35"]
[WhiteElo "2137"]
[BlackElo "2535"]
[Annotator "TA"]
[PlyCount "34"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,21,25,28,22,37,32]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8. Nge2 Nh5 9. Bxe7 Qxe7 10. Qd2 {D35: Queen's Gambit Declined: Exchange Variation} g6 (10... Nb6 11. f3 g6 12. O-O O-O 13. Rae1 Be6 14. e4 dxe4 15. fxe4 Rad8 16. b3 Bg4 17. Qe3 f6 {1-0 (39) Ding,L (2782)-Inarkiev,E (2660) Baku 2015}) 11. f3 {Predecessor:} Ndf6 $146 12. O-O-O Be6 13. g4 Ng7 14. h4 h5 15. g5 Nd7 16. e4 Nb6 17. Ng3 O-O-O {1-0 (63) Wehmeier,S (2394)-Kalka,A (2407) Germany 2006} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Bitelmajer, Martin"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "2655"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,123,36,70,28,45,5,37,35,41,34,34,37,33,25,31,20,0,0,0,-3,14,10,18,-19,-27,-33,-10,0,0,0,0,-48,-44,-70,0,0,0,0,65,19,19,19,19,19,50,19,27,24,80,19,68,56,111,108,124,74,102,0,94,74,87,86,107,112,112,104,187,83,179,127,179,171,238,238,237,237,222,218,595,575,879,842,780,740,1207,1093,29984,29985,29987,29988,29988,29989,29989,29990,29991,29983,29983,29983]} 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. a4 Bg7 9. h3 O-O 10. e3 Qe7 {A61: Modern Benoni: Nf3 without early e4} (10... Re8 11. Bd3 Nh5 12. Bh2 Nd7 13. Be2 f5 14. O-O Bf8 15. Rb1 Nhf6 16. Ng5 Ne5 17. b4 b6 18. Qb3 {½-½ (30) Gelfand,B (2740)-Iordachescu,V (2581) Civitanova Marche 2016}) 11. Be2 Nbd7 12. O-O Ne8 13. Nd2 Rb8 14. Re1 f5 {LiveBook: 6 Games} 15. Bf1 Ne5 16. Bh2 Bd7 $146 ({Predecessor (4):} 16... Nf6 17. a5 Bd7 18. Qb3 {½-½ (62) Tregubov,P (2616)-Piscopo,P (2409) Grosseto Prugna 2014}) 17. a5 Qd8 18. Qb3 b5 19. axb6 $1 Rxb6 20. Qc2 Bb5 21. Nxb5 axb5 22. Ra5 Nc7 23. Nb1 {[%cal Bd2b1,Bb1c3,Bc3a4][%mdl 32]} Kh8 24. Nc3 {[%cal Rc3b5]} b4 25. Na4 Rb7 26. Rd1 Ne8 (26... Nxd5 27. Nxc5 dxc5 28. Qxc5 $16) 27. Ra6 $1 Nc7 (27... Nf7 {feels hotter.} 28. Kh1 Be5 29. Bg1 Qe7 30. Rc6 Bf6) 28. Rc6 Ne8 29. Bxe5 Bxe5 30. b3 Nc7 (30... f4 $15 31. e4 f3) 31. Nb2 $11 Bxb2 32. Qxb2+ Qf6 (32... Kg8 $11) 33. Qa1 Qxa1 34. Rxa1 Rd8 35. Bc4 Kg7 36. Kf1 Kf6 37. Ke2 Ke7 (37... h5 $11) 38. Kd3 (38. g4 $16) 38... Kd7 39. g4 Rf8 (39... Ne8 $14) 40. f4 $16 Rf7 41. Ra2 Rf8 42. Ra1 Rf7 $1 43. e4 fxe4+ 44. Kxe4 Re7+ 45. Kf3 Rf7 46. h4 $1 Rf8 (46... Ke7 $16) 47. Ra2 (47. g5 $1 $18 {is the precise move to win.}) 47... Rf7 {[#]} (47... h6 $16) 48. g5 $1 $18 Rf5 {[#]} (48... Rf8 $16) 49. Ke4 $1 h5 (49... Rf8 {was worth a try.}) 50. gxh6 Rh5 51. Rg2 Rxh6 52. h5 $1 gxh5 $2 (52... Rxh5 {is more resistant.} 53. Rxg6 Ne8) 53. Rg7+ Kd8 54. Kf5 h4 55. Kg5 h3 56. Kxh6 h2 57. Rxd6+ {White mates.} Ke8 58. Be2 ({Inferior is} 58. Rg8+ Ke7 59. Rdg6 h1=Q+ $11) 58... h1=Q+ 59. Bh5+ Qxh5+ 60. Kxh5 c4 61. Kg6 cxb3 62. Kf6 {Precision: White = 70%, Black = 32%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Dolezal, Cristian"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2554"]
[BlackElo "2401"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,118,43,49,66,52,63,51,56,32,84,75,73,73,75,85,80,73,69,55,67,34,47,29,30,11,10,18,40,37,41,40,39,14,14,12,12,12,12,13,12,13,13,0,0,8,26,26,26,26,26,10,10,5,26,10,26,24,20,17,17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,8,8,8,8,8,8,8,8,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Be3 Bg7 9. f3 O-O 10. Qd2 Be6 11. Rc1 Qa5 12. Be2 Rfc8 13. b3 a6 14. Na4 Qxd2+ 15. Kxd2 Nd7 16. g4 Rc6 {B36: Sicilian: Maroczy Bind: Gurgenidze System} (16... f5 17. exf5 gxf5 18. h3 Rf8 19. f4 Rad8 20. g5 Bf7 21. Rhd1 e5 22. Ke1 exf4 23. Bxf4 Be5 24. Bxe5 Nxe5 {1-0 (46) Bu,X (2707)-Guseinov,G (2592) Doha 2014}) 17. Nc3 Kf8 18. Nd5 a5 {White is slightly better.} 19. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Nc5 ({Black should play} 19... a4 $14) 20. h5 Bxd5 21. cxd5 Rb6 22. hxg6 hxg6 23. Rc4 $146 ({Predecessor:} 23. Bxc5 dxc5 24. Rxc5 {1-0 (43) Fogarasi,T (2435)-Kiefhaber,H (2273) Germany 2007}) 23... Rb4 24. Rb1 (24. Bxc5 $5 Rxc4 25. bxc4 dxc5 26. g5 $16) 24... b6 25. g5 e6 26. dxe6 fxe6 27. Rbc1 Ke7 28. Rh1 Kf7 29. Rh7 Kg8 30. Rh4 b5 31. Bxc5 bxc4 32. Bxb4 axb4 33. Bxc4 Rxa2+ $14 {[%mdl 4096] Endgame KRB-KRB} 34. Ke3 Kf7 $1 35. Rh7 Kg8 36. Rh1 {And now Rd1 would win.} Kf7 37. f4 Ra5 38. Rd1 Ke7 39. Kf3 Ra1 40. Rd2 Rh1 41. Ra2 {Hoping for Ra7+.} Ra1 42. Rh2 Kf7 43. Rh7 {[#] Bxe6+! is the strong threat.} Kg8 44. Rh4 {The position is equal.} Kf7 $1 45. f5 gxf5 46. exf5 d5 47. Bd3 {[#] Black must now prevent f6.} exf5 48. Rxb4 Rg1 49. Rb7+ Kg6 50. Rd7 Rxg5 51. Rxd5 Bf8 52. Kf4 Rg4+ 53. Ke5 Bg7+ 54. Ke6 Rd4 55. Bxf5+ Kg5 56. Rb5 Kf4 57. Bg6 Ke3 58. b4 Rf4 59. Bf5 Bc3 {Precision: White = 58%, Black = 72%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "3"]
[White "Morovic Fernandez, Ivan"]
[Black "Perez Pietronave, Carlos"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2527"]
[BlackElo "2214"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,103,19,27,27,18,16,31,34,29,27,30,15,21,22,29,22,22,8,14,4,6,0,0,0,0,-21,-14,-16,0,-19,0,0,-14,-19,0,-20,18,9,0,-67,-66,-69,-59,-72,41,21,152,56,45,36,37,22,53,68,43,0,0,0,0,0,208,194,194,194,194,194,194,194,245,219,219,219,214,194,324,322,308,296,398,392,362,339,473,426,560,499,586,580,843,838,833,818,799,723,1541,1454]} 1. d4 f5 2. Nc3 d5 3. Bf4 e6 4. e3 Nf6 5. Nf3 Bd6 6. Bd3 {A80: Dutch Defence: Unusual White second moves} (6. Be2 O-O 7. O-O c6 8. Bxd6 Qxd6 9. Na4 Nbd7 10. b3 e5 11. dxe5 Nxe5 12. c4 Be6 13. Nxe5 Qxe5 {½-½ (51) Wang,H (2735)-Radjabov,T (2713) Beijing 2013}) 6... O-O 7. O-O Nc6 8. Ne2 {White is slightly better.} Nb4 9. Bb5 Bd7 10. a4 $146 ({Predecessor (2):} 10. Bxd7 Nxd7 11. c3 Nc6 12. Qd3 Nb6 13. b3 Qe8 14. a4 Kh8 15. a5 Nd7 16. a6 b6 17. c4 Nf6 18. Rfc1 Ne7 19. b4 {1-0 (19) El Debs,F (2507)-Rodriguez Vila,A (2518) Caxias do Sul 2012}) 10... a6 11. Bxd7 Qxd7 12. c3 Nc6 13. b4 Ne4 14. Qd3 h6 15. Rab1 g5 16. Bxd6 cxd6 17. Rfc1 Ne7 18. a5 Rfc8 19. Ne1 Rc4 20. f3 Nf6 21. Nc2 e5 22. Qd2 g4 23. Na3 $36 {[%mdl 2048] Black is under pressure.} Rc7 24. c4 (24. fxg4 $11 Rac8 25. c4) 24... gxf3 $1 $15 25. gxf3 Ng6 26. Kh1 dxc4 (26... e4 $1 $17 27. Nc3 (27. Rg1 Kh7 28. Nc3 exf3 29. Nxd5 Nxd5 30. cxd5 Qe7 $17) 27... exf3) 27. Nxc4 $14 {And now Nb6 would win.} Rac8 (27... Qe6 $11 28. dxe5 dxe5) 28. Nb6 (28. Rg1 $1 $16 {[%cal Rg1g6]} Rxc4 29. Rxg6+ Kf7 30. Rxh6) 28... Rxc1+ 29. Rxc1 Rxc1+ 30. Qxc1 Qc6 31. Qxc6 bxc6 {[%mdl 4096] Endgame KNN-KNN} 32. d5 Ne7 ({Don't play} 32... Nxd5 $6 33. Nxd5 cxd5 34. b5 $1 $16 {[%mdl 512]}) 33. Nc3 cxd5 ({But not} 33... Nexd5 $2 34. Nbxd5 Nxd5 35. Nxd5 $18) 34. b5 axb5 $2 (34... d4 $11 {and Black has nothing to worry.} 35. exd4 exd4) 35. Nxb5 Nc6 {[#]} 36. a6 $1 ({And not} 36. Nxd6 Nxa5 37. Nxf5 Kf8 $11) 36... Kf7 37. Nxd6+ Ke6 38. Nb5 Ne8 (38... Nh5 $142 39. Na4 Ke7) 39. a7 Nxa7 40. Nxa7 Kd6 41. Na4 Kc7 (41... Nc7 $142 42. Kg2 Ne6 43. Nb5+ Kc6) 42. Nb5+ $18 Kc6 43. Nbc3 d4 44. exd4 exd4 45. Ne2 Kd5 46. Nb2 {White is clearly winning.} Nd6 47. Kg2 Kc5 48. Kg3 Nb5 49. Kf4 Nd6 50. Ke5 Nb5 51. Kxf5 Kb4 52. Ke5 {Precision: White = 71%, Black = 49%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.01"]
[Round "3"]
[White "Real De Azua, Ernesto"]
[Black "Molina, Pablo Sebastian"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "2478"]
[BlackElo "2239"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,110,27,30,44,111,106,204,209,216,220,214,212,193,211,173,178,187,147,178,159,153,160,227,204,213,196,219,198,227,128,135,103,118,121,121,106,115,102,111,116,116,116,116,116,114,112,154,151,177,177,177,162,177,177,177,177,289,177,369,380,376,336,287,278,778,783,681,654,1235,1168,1176,1141,1128,1119,1107,1064,996,1077,1028,1001,913,841,3398,3159,1441,1894,4095,2427,4702,4133,5535,5279,29975,29977,29974,29974,29974,29973,29990]} 1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Nc6 6. O-O Be6 7. Bb5 Bc5 8. b4 {D20: Queen's Gambit Accepted: 3 e3 and 3 e4} Bxb4 {[#]} (8... Bb6 $14) (8... Bb6 9. Bb2 Nge7 10. a4 a6 11. Bxc6+ Nxc6 12. b5 Na5 13. Bxd4 Nb3 14. Bxb6 cxb6 15. Ra3 O-O {1-0 (51) Inarkiev,E (2709)-Borisek,J (2561) Doha 2016}) 9. Qa4 $1 $16 Be7 $146 (9... a5 $16) ({Predecessor:} 9... a5 10. a3 Bd6 11. e5 Bf8 12. Nxd4 Bd7 13. Bxc6 bxc6 14. Nc3 Ne7 15. Re1 Qc8 {1-0 (30) Wagle,D-Burke,M ICCF email 2013}) 10. Nxd4 $1 $18 {White is clearly better.} Bd7 {Strongly threatening ...Nxd4.} 11. Nxc6 ({Weaker is} 11. Bxc6 Bxc6 12. Nxc6 Qd7 $14) 11... bxc6 12. Bxc6 Bxc6 13. Qxc6+ Kf8 14. Nc3 Bd6 15. Be3 Qe8 16. Qc4 Qe6 17. Qd3 Ne7 (17... Nf6 $16 18. f4 Ng4) 18. Nb5 a6 19. Nxd6 Qxd6 20. Qc2 Qe6 21. Qxc7 (21. f4 $18) 21... f6 $16 22. Qb6 Kf7 23. Qxe6+ Kxe6 24. Rab1 Rhb8 25. Bf4 Rxb1 26. Rxb1 {[%mdl 4096] Endgame KRB-KRN} Rc8 27. Rb6+ Rc6 28. Rxc6+ Nxc6 {KB-KN} 29. Kf1 Kd7 30. Ke2 Nd8 31. Kd3 Kc6 32. Kc4 Ne6 33. Be3 h5 34. g3 g6 (34... Nc7 {was necessary.} 35. f4 Nb5) 35. f3 f5 $2 {[#]} (35... Nf8 36. Bd4 f5) 36. exf5 $18 gxf5 37. h4 Kd6 38. Bd2 Nd8 $2 (38... Ke5 39. Bc3+ Kd6 40. Bb4+ Ke5 41. Bc3+ Kd6) 39. Bf4+ Ke6 40. Kc5 Nf7 41. Kb6 Kd7 42. Kxa6 Kc6 43. a4 Nd8 44. Ka5 Ne6 45. Be3 Nc7 46. Bf2 Nd5 47. Bd4 f4 48. gxf4 Nxf4 49. Be3 Ne6 50. Kb4 Ng7 51. Kc4 Nf5 52. Bf2 Kd6 53. a5 {[%cal Ba4a5,Ba5a6][%mdl 32] White mates.} Kc6 54. a6 Nd6+ 55. Kd3 Kd5 {Precision: White = 85%, Black = 38%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Salinas Herrera, Pablo"]
[Black "Peralta, Fernando"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "2453"]
[BlackElo "2565"]
[Annotator "TA"]
[PlyCount "230"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,230,17,0,12,-35,-27,-20,-13,-30,-4,-12,-14,-16,18,6,14,16,23,25,16,-8,-8,-5,0,0,0,0,0,-31,0,-6,-6,-6,-6,-6,-6,-26,-6,-6,-4,-18,0,0,0,-4,0,0,0,0,0,0,0,0,0,-136,-139,-140,-135,-255,-229,-297,-292,-432,-411,-368,-369,-412,-331,-414,-337,-394,-418,-413,-245,-496,-522,-520,-513,-509,-489,-436,-254,-254,-201,-261,-254,-299,-154,-195,-156,-153,-148,-153,-138,-293,-164,-170,-164,-145,-120,-135,0,-120,0,-128,-120,-128,-128,-128,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-120,-111,-120,-120,-120,-120,-120,-120,-120,-120,-120,-114,-120,-120,-120,-120,-120,-120,-120,0,-97,0,-117,-106,-145,-130,-145,-143,-145,-146,-155,-156,-297,-284,-282,-201,-208,-213,-212,-207,-29979,-29980,-29966,-10274,-7564,-7527,-6183,-5297,-1889,-1565,-12838,-9285,-11560,-1176,-7539,-5618,-5614,-4668,-2351,-1477,-1968,-1266,-1322,-1167,-1004,-918,-950,-879,-984,-958,-29952,-29953,-29948,-29958,-29967,-29969,-29971,-29972,-29972,-29971,-29976,-29977]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 cxd4 6. exd4 Bb4 7. cxd5 Nxd5 8. Qc2 Nc6 9. Bd3 Ba5 10. a3 {B14: Caro-Kann: Panov-Botvinnik Attack with 5...e6 and 5...g6} h6 11. O-O O-O 12. Rd1 {LiveBook: 22 Games. The position is equal.} Nce7 13. Bc4 (13. Ne5 Bd7 14. Ne4 Bc7 15. Qe2 Ba4 16. Re1 Nf5 17. Nc5 Nxd4 {1-0 (26) Andreikin,D (2696)-Dreev,A (2711) Baku 2011}) 13... Bd7 14. Ne4 Rc8 {...b5 is the strong threat.} 15. Qe2 $146 ({Predecessor:} 15. Nc5 Rb8 16. Ne5 Be8 17. Qe4 Bc7 {0-1 (48) Begnis,N (2255)-Papaioannou,I (2490) Poros 1998}) 15... Ba4 16. b3 Bc6 17. b4 Bc7 18. b5 Be8 19. a4 Ba5 {[%cal Bc7a5,Ba5b4,Bb4d6][%mdl 32]} 20. Ba3 Bb4 $1 21. Bb2 b6 22. Rac1 f6 23. Ne1 Bf7 24. Nd3 Bd6 $1 25. Bxd5 exd5 26. Rxc8 Nxc8 {[%cal Be7c8,Bc8d6,Bd6c4][%mdl 32]} 27. Nxd6 Nxd6 28. Nb4 Re8 29. Qf3 Nc4 30. Bc3 Re4 31. Re1 Rxe1+ (31... Qe8 $5 {[%cal Re4e1]} 32. Ra1 Qe6 $11) 32. Bxe1 Qe7 $36 {[%cal Re7e1][%mdl 2048] White is under pressure.} 33. Kf1 Qe6 34. Bc3 Kh7 35. h3 Nd6 36. Nc6 Qd7 37. Bb4 Nc4 38. Qf4 (38. Qg4 $11 Be6 39. Qg3) 38... a5 $17 39. Bc3 Bg6 40. Qb8 (40. Qc1 $17 {keeps fighting.}) 40... Bc2 $19 41. Qf8 Bxa4 42. Ne7 (42. Qe7 $142 Qf5 43. Qe1) 42... Qe6 43. Qe8 Nd6 44. Qd8 Bxb5+ ({Much less strong is} 44... Nxb5 45. Bd2 $19) 45. Kg1 Bd7 46. h4 h5 47. Bd2 Nb5 (47... b5 $142 48. Nxd5 Qxd5 49. Qxd7 b4) 48. Be3 $2 (48. Qf8) 48... a4 49. Qf8 {intending Bh6!} Nd6 ({Not} 49... a3 50. Bh6 $1 {[%mdl 512]} gxh6 51. Nf5 $1 $11 {[%mdl 512]}) 50. Bc1 Nf5 51. Nxf5 Qxf5 (51... Qe1+ $142 52. Kh2 Bxf5) 52. Qb4 b5 53. Ba3 Qe4 54. Qe7 Be6 (54... Qxd4 $19 {Hoping for ...Qd1+.} 55. Qxd7 Qa1+ 56. Kh2 Qxa3) 55. Bc5 Bg8 56. f3 Qxh4 {And now ...b4! would win.} 57. Qe8 {[#]} a3 $1 58. Qe2 $2 {[#]} (58. Bxa3 $17 Qxd4+ 59. Kh1) 58... Bf7 (58... b4 $142 $1 {Strongly threatening ...Qf4.} 59. Qd2 (59. Bxb4 Qxd4+) 59... Qg5 60. Bxb4 Qxd2 61. Bxd2 Kg6) 59. Qd3+ Bg6 60. Qxa3 Qe1+ 61. Kh2 Qh4+ 62. Kg1 Qe1+ 63. Kh2 Qd2 64. Qa7 Qf4+ 65. Kh1 Qh4+ 66. Kg1 Qe1+ 67. Kh2 Qe6 68. Qb7 Bd3 69. Bf8 {[%csl Gf8][%cal Rb7g7]} Qg8 70. Bd6 Kg6 71. Qe7 Qf7 72. Qe3 Bc4 73. Qe1 Kh7 74. Kg1 Qg6 75. Kh2 Qf5 76. Qe3 Qd7 77. Bc5 Qc7+ 78. Kg1 Qg3 79. Qe7 Qf4 80. Qe8 Qg5 81. Qe1 Bd3 82. Bd6 h4 83. Kh2 Bf5 84. Qf2 Bd3 85. Qe1 Bf5 86. Qf2 $1 Bd7 87. Kh1 Kg8 88. Bb4 Qc1+ 89. Kh2 Qf4+ 90. Kh1 h3 91. g3 (91. gxh3 $17 Bxh3 92. Qe2) 91... Qc1+ 92. Kh2 Qc4 93. Bc5 b4 94. g4 b3 95. Kxh3 $2 (95. Ba3 $19) 95... Qc1 96. Kg2 b2 (96... Bb5 $142 97. f4 b2 98. Ba3 {[#]} Qf1+ $1 {[%mdl 512]} 99. Qxf1 Bxf1+ 100. Kxf1 b1=Q+ 101. Kf2 Qa2+ 102. Kf3 Qxa3+ 103. Kf2 Qd3 104. f5 Kh7 105. g5 fxg5 106. Kg2 Qe2+ 107. Kg3 g4 108. Kf4 Kh6 109. f6 gxf6 110. Kf5 Kg7 111. Kf4 Qf3#) 97. Ba3 b1=Q {( -> ...Qh1+)} 98. Bxc1 Qxc1 99. Qa2 Qc6 100. Qa7 Kh7 101. Qb8 Qe6 102. Qh2+ Kg8 103. Qb8+ Kf7 104. Kf2 Qc6 105. Qa7 Qd6 106. Kg2 Qe7 107. Qa2 Be6 108. Qd2 Qa7 109. Qf4 Qa2+ 110. Kg1 Qb1+ {Black mates.} 111. Kg2 Qc2+ 112. Kg1 g5 113. Qe3 Bd7 114. Qe1 Qd3 115. Qf2 Bb5 {Precision: White = 54%, Black = 74%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Pierrot, Facundo"]
[Black "Morovic Fernandez, Ivan"]
[Result "0-1"]
[ECO "C95"]
[WhiteElo "2392"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 40,140,22,16,16,12,21,0,0,0,0,-9,-9,-8,-8,-8,-8,-8,-10,-8,-8,-7,-6,-6,-3,-3,-3,-3,-3,-3,-2,-6,0,0,0,-8,-8,-13,0,0,0,0,0,0,0,0,0,0,0,0,-4,-6,0,-13,-8,-12,-16,-16,-14,-22,-4,-126,-135,-117,-116,-295,-295,-295,-295,-295,-295,-280,-279,-445,-294,-444,-432,-570,-570,-796,-523,-536,-503,-337,-387,-399,-390,-293,-298,-8020,-7422,-8102,-8730,-8730,-8102,-6454,-5405,-5142,-2329,-7065,-6494,-7422,-7656]} 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. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 c5 16. d5 c4 17. Bg5 h6 18. Be3 Nc5 19. Qd2 h5 20. Bg5 Be7 21. Ra3 {LiveBook: 140 Games} Nfd7 {C95: Closed Ruy Lopez: Breyer Variation with 10 d4} 22. Bh6 (22. Be3 Bf6 23. Rea1 Qc7 24. axb5 axb5 25. Qc1 Rxa3 26. Rxa3 Ra8 27. Qa1 {½-½ (27) Quesada Perez,Y (2627)-Bruzon Batista,L (2666) Merida 2015}) 22... Bf6 23. axb5 $146 ({Predecessor:} 23. Rea1 Qe7 24. Be3 Nb6 25. axb5 axb5 26. Qe2 Rxa3 27. Rxa3 Ra8 28. Rxa8+ Bxa8 29. b3 {0-1 (43) Katai,D (2235)-Matrahalmi,T (2299) Hungary 2011}) 23... axb5 {The position is equal.} 24. Rea1 Qc7 25. Be3 Rxa3 26. Rxa3 Ra8 27. Rxa8+ Bxa8 28. Qc1 Qa5 29. Qb1 Bb7 30. Nd2 Ba6 31. Ne2 Bd8 32. Nc1 b4 33. cxb4 Qxb4 34. Na2 Qa5 35. Nc3 Qb4 36. Na2 Qa5 37. Nc3 Kg7 38. Qa2 Qb4 39. Bd1 Ba5 40. Be2 {[%cal Re2c4]} Nd3 41. Bxd3 $1 cxd3 42. Nb3 Bb6 43. Bxb6 Nxb6 44. Qxa6 {Qa3 is the strong threat.} Qxb3 45. Qxd3 {White wants to play Qb5.} Qxb2 46. Nd1 (46. Qb5 $5 {[%cal Rb5b2]} Qxc3 47. Qxb6 $11) 46... Qc1 47. Kh2 Nd7 48. f3 Nc5 $36 {[%mdl 2048] Black has some pressure.} 49. Qe2 Nb3 50. Nf2 (50. Ne3 $11 {keeps the balance.}) 50... Nd4 $17 51. Qd1 Qe3 $1 {[%cal Re3f2]} 52. Nh1 $2 (52. Nd3 $17 {was called for.}) 52... h4 $19 53. Qf1 Ne2 54. Qf2 Qxf2 $1 55. Nxf2 {[%mdl 4096] Endgame KN-KN} f5 $1 56. Nd1 (56. exf5 $142 gxf5 57. Nd3) 56... Kf6 57. Ne3 (57. exf5 $142 gxf5 58. Ne3) 57... fxe4 $1 58. Nc4 exf3 59. Nxd6 fxg2 60. Kxg2 Nf4+ 61. Kf3 Nxd5 62. Kg4 {[#]} Ne3+ $1 63. Kf3 {[#]} Ke6 $1 {[%cal Re6d6]} 64. Ne4 $2 (64. Nb5 Nf5 65. Nc3) 64... Nd5 {Black is clearly winning.} 65. Ng5+ Kf5 66. Ne4 Nf6 67. Nd6+ Ke6 68. Nc4 g5 69. Ne3 e4+ 70. Kf2 Nd5 {Precision: White = 52%, Black = 86%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Scarella, Enrique Alejandro"]
[Black "Real De Azua, Ernesto"]
[Result "1/2-1/2"]
[ECO "A64"]
[WhiteElo "2335"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,50,1,0,0,-1,0,0,0,-16,40,-30,25,27,29,-41,-41,-39,93,25,32,25,28,-2,-10]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 a6 11. a4 Nbd7 12. Nc4 Ne5 13. Nxe5 Rxe5 14. Bf4 Re8 15. Qc2 b6 {A64: Modern Benoni: Fianchetto Variation: 9...Nbd7 10 Nd2 a6 11 a4 Re8} (15... Rb8 16. Rab1 b5 17. axb5 axb5 18. b4 c4 19. Ra1 Nh5 20. Be3 Rxe3 21. fxe3 Qb6 22. Qd2 Nf6 23. Ra5 {0-1 (51) Arkell,K (2438)-Carlstedt,J (2413) chess.com INT 2017}) 16. h3 Nh5 17. Bd2 f5 18. e3 $146 ({Predecessor:} 18. Rfe1 Bd7 19. Qd3 Nf6 20. Bf4 Qe7 21. Ra3 h6 22. Rb3 g5 23. Bc1 Reb8 24. e4 b5 25. axb5 axb5 26. Nxb5 fxe4 27. Qc4 Ra1 28. Nc3 Rxb3 29. Qxb3 Bf5 30. Rf1 {½-½ (30) Toedter,H (2217)-Fagerbekk,E (2189) ICCF email 2013}) 18... g5 (18... Bd7 $11) 19. Kh2 (19. e4 $14) 19... f4 ({Black should play} 19... Bd7) 20. exf4 gxf4 21. Bf3 ({Of course not} 21. gxf4 Rf8 22. Ne2 Qh4 $15) (21. Rae1 $11) 21... fxg3+ $15 22. fxg3 Nf6 (22... Be5 $15 {keeps the upper hand.} 23. Bxh5 Qh4 24. Bf7+ Kh8) 23. Rae1 ({Better is} 23. Ne2 $16) 23... Rxe1 $11 24. Rxe1 Ra7 25. Ne2 Re7 {Precision: White = 26%, Black = 55%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.02"]
[Round "3"]
[White "Cimer, Emanuel"]
[Black "Slipak, Sergio"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2258"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,89,-13,-2,50,25,25,25,25,21,29,25,23,28,24,29,27,5,21,2,11,5,0,10,16,0,3,0,25,-36,-29,-35,-15,-66,-68,-139,-145,-131,-135,-137,-127,-123,-134,-151,-81,-72,-27,-36,-36,-36,-29,-30,-24,-12,-16,-25,-6,-6,-5,-6,-6,-6,0,0,0,-20,-7,-7,0,0,0,0,0,0,0,0,0,0]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Qe2 d5 6. e5 Nd7 7. d3 Qc7 {B40: Sicilian: 2...e6, Unusual lines} (7... Be7 8. O-O g5 9. h3 h5 10. g4 hxg4 11. hxg4 Nf8 12. c3 Ng6 13. d4 Nh4 14. Be3 Nxf3+ 15. Bxf3 {1-0 (57) Navara,D (2702)-Rahman,Z (2499) Caleta 2014}) 8. Bf4 {LiveBook: 11 Games} g5 ({Black should try} 8... h6 $11) 9. Bxg5 (9. Nxg5 {feels hotter.} Bg7 10. O-O Ndxe5 11. Nc3 Qe7 12. Qh5) 9... Bg7 $1 {[%cal Rd7e5] White has an edge.} 10. Bf4 $146 ({Predecessor:} 10. Nc3 Nd4 11. Nxd4 cxd4 12. Nxd5 exd5 {1-0 (73) Adamson,G (2097)-Zhulanov,V (2296) Odintsovo 2008}) 10... Ndxe5 11. Nxe5 Bxe5 12. Bxe5 Qxe5 13. Qxe5 Nxe5 14. Nd2 Bd7 15. f4 Nc6 16. O-O-O Ke7 17. Rhe1 {Black should prevent Bxd5.} Kd6 18. Nf3 Rac8 19. c4 f6 20. Kb1 b5 21. b3 ({White should play} 21. cxb5 $11 Nd4 22. Nxd4 cxd4 23. Bh3) 21... a6 $15 22. a3 Nd4 23. Kb2 (23. Nxd4 $11 cxd4 24. Rd2) 23... bxc4 24. Nxd4 (24. dxc4 $15 Nxf3 25. Bxf3) 24... c3+ $1 $17 25. Kxc3 cxd4+ 26. Kxd4 Rc2 27. Bf3 Rxh2 28. Re2 {[#]} Rxe2 (28... Rh3 $142 $1 29. Rg1 Rg8) 29. Bxe2 {[%mdl 4096] Endgame KRB-KRB} Rg8 30. Rg1 e5+ 31. fxe5+ fxe5+ 32. Kc3 d4+ 33. Kd2 a5 34. Rh1 Rxg3 {Hoping for ...Bf5.} (34... Bf5 $5 {[%cal Rg8g3]}) 35. Rxh7 {The position is equal.} Rg2 {[#] Threatens to win with ...Bg4.} 36. Kd1 Rg1+ 37. Kc2 a4 {aiming for ...Rg2.} (37... Bf5 $5 {[%cal Rf5h7]} 38. Rh6+ Rg6 39. Rxg6+ Bxg6 $11) 38. Rh6+ Kc7 {Strongly threatening ...Rg2.} 39. bxa4 Bxa4+ 40. Kd2 Bb3 41. Bf3 Ra1 42. Ra6 Ra2+ 43. Ke1 Ra1+ 44. Kd2 Ra2+ 45. Ke1 {Precision: White = 67%, Black = 73%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Peralta, Fernando"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "E53"]
[WhiteElo "2565"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,90,16,1,0,2,34,34,42,25,41,23,27,10,14,14,13,16,17,7,10,13,3,9,16,12,20,-13,-11,-27,-16,-31,-14,-13,0,-177,-177,-177,-177,-173,0,0,0,-176,-176,-165,-160,-206,-203,-197,-207,-223,-193,-235,-237,-275,-252,-243,-251,-294,-293,-264,-297,-325,-318,-389,-351,-365,-349,-480,-458,-548,-536,-768,-739,-850,-830,-975,-954,-723,-527]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 c5 7. cxd5 exd5 {E53: Nimzo-Indian: Rubinstein: Main Line (4...0-0 5 Nf3 d5 6 Bd3 c5 7 0-0)} (7... Nxd5 8. O-O cxd4 9. exd4 Nc6 10. Bc2 Nf6 11. Re1 h6 12. Qd3 Bd6 13. Ne4 Nxe4 14. Qxe4 f5 15. Qe2 {1-0 (23) Ivanchuk,V (2747)-Anand,V (2779) Doha 2016}) 8. dxc5 Bxc5 9. O-O a6 {White is slightly better.} 10. b3 Nc6 11. Bb2 Bg4 12. Rc1 (12. h3 $5 {[%cal Rh3g4]} Bxf3 13. Qxf3 $11 (13. gxf3 d4 14. exd4 Bxd4 $17)) 12... Qd6 13. h3 Bh5 14. Be2 Rad8 $146 ({Predecessor:} 14... Bg6 15. Nh4 Rfd8 16. Nxg6 hxg6 17. Bf3 Rac8 {1-0 (59) Becsenescu,I-Lloyd,G (2229) ICCF email 2010}) 15. Nh4 Bg6 16. Nxg6 hxg6 17. Bf3 Ba7 18. Ne2 Rfe8 19. Nd4 Bb8 {[%csl Gb8][%cal Rd6h2]} 20. g3 Rxe3 21. Nxc6 (21. fxe3 {gets mated.} Qxg3+ 22. Bg2 Qh2+ 23. Kf2 Ne4+ 24. Kf3 Qg3+ 25. Ke2 Qxg2+ 26. Rf2 Qxf2+ 27. Kd3 Ne5#) 21... bxc6 22. Bxf6 (22. fxe3 $2 {is the wrong capture.} Qxg3+ 23. Bg2 Qh2+ 24. Kf2 Ne4+ 25. Ke2 Qxg2+ 26. Kd3 Qxb2 $19) 22... gxf6 23. fxe3 $2 (23. Kg2 $11) 23... Qxg3+ $19 24. Bg2 {Threatens to win with Rf3.} Qh2+ {[%mdl 1024] Black has strong compensation.} 25. Kf2 {Strongly threatening Qf3.} Qg3+ 26. Kg1 Qh2+ 27. Kf2 {[#] And now Qf3 would win.} Bg3+ $1 {[%cal Bb8g3,Bg3h4,Bh4g5][%mdl 32]} 28. Kf3 Bh4 {aiming for ...d4!} 29. Qd4 Qg3+ 30. Ke2 Qxg2+ 31. Kd3 Qxh3 32. Rh1 Qf5+ 33. Kc3 Bg5 34. Kb2 {[#]} Qe6 $1 35. Rc2 {Hoping for Rch2.} Bxe3 36. Qh4 {[%csl Gh1][%cal Rh4h8]} Kf8 37. Kb1 d4 {[%cal Bd5d4,Bd4d3,Bd3d2][%mdl 32]} 38. Qg3 Qd6 39. Qf3 Qd5 40. Qh3 c5 {Black is clearly winning.} ({Not} 40... d3 41. Rch2 d2 42. Qxe3 d1=Q+ 43. Rxd1 Qxd1+ 44. Kb2 $19) 41. Rf1 f5 42. Qh4 {White hopes to continue with Rxc5!} d3 43. Rh2 d2 44. Rd1 Qd3+ 45. Kb2 Qd4+ {Precision: White = 58%, Black = 80%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Morovic Fernandez, Ivan"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2527"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "20"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,20,-4,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 d5 4. e3 Bd6 5. Bg3 c5 6. c3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} O-O 7. Nbd2 Qc7 (7... b6 8. Bd3 Ba6 9. Bxa6 Nxa6 10. Qe2 Nc7 11. Ne5 cxd4 12. cxd4 Ne4 13. Nd3 Qe7 14. Bxd6 Qxd6 {½-½ (30) Iturrizaga Bonelli,E (2652)-Adams,M (2751) Caleta 2017}) 8. Ne5 Nc6 {LiveBook: 9 Games. The position is equal.} 9. Nxc6 Qxc6 10. Bd3 Qc7 $146 ({Predecessor:} 10... Re8 11. Qe2 Bd7 12. O-O Bxg3 13. hxg3 e5 14. dxc5 Qxc5 {1-0 (38) Vezzosi,P (2381)-Codenotti,M (2122) Arvier 2009}) 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Real De Azua, Ernesto"]
[Black "Cimer, Emanuel"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2478"]
[BlackElo "2258"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,93,50,50,109,97,206,206,219,212,214,213,226,197,191,204,260,260,242,166,170,167,222,205,205,206,230,239,366,193,416,410,801,790,883,600,1086,1055,994,379,396,391,369,356,364,335,366,225,316,225,812,807,907,765,1320,950,1443,1373,29987,29988,29988,29989,29992,29993,29996,29997]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O Nxd4 10. Bxd4 Be6 11. Kb1 Qc7 12. g4 Rfc8 13. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Qa5 14. a3 Rab8 15. h5 b5 16. h6 Bh8 {[#] B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0} ({Black should try} 16... Bf8 $14) 17. g5 $1 $16 {[%cal Rg5f6]} (17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 Rc7 20. Be3 Nd7 21. f4 b4 22. a4 Bc3 23. Rd3 Bh8 24. Rd1 Nb6 25. Bxb6 Rxb6 26. Rh3 a5 27. Bb5 Rbb7 28. Rd2 Rb8 29. Ka2 Rbc8 {½-½ (29) Chripko,L (2560)-Joppich,U (2445) ICCF email 2010}) 17... Ne8 (17... Nd7 $16 {keeps fighting.}) 18. Nd5 $18 Qd8 {White is clearly better.} 19. Bxa7 Bxd5 $146 ({Predecessor:} 19... Ra8 20. Bb6 Qd7 21. Nb4 f6 22. f4 Qb7 23. Bd4 Bg4 24. Be2 Bxe2 25. Qxe2 {½-½ (37) Benza,A (2295)-Olenin,N (2394) Tula 2007}) 20. exd5 Rb7 21. Bd4 Bxd4 22. Qxd4 Qc7 23. c3 Qc5 24. Bh3 Qxd4 25. Rxd4 ({Don't play} 25. cxd4 $6 Ra8 $16) 25... Rc5 (25... Ra8 $142 26. Re4 Kf8) 26. Re1 Kf8 27. f4 Nc7 28. Red1 Na8 (28... f5 $142 29. Kc2 Na8) 29. Rf1 (29. f5 $142 gxf5 30. Bxf5) 29... Kg8 $2 (29... f5 30. gxf6 exf6) 30. f5 {fxg6 is the strong threat.} gxf5 (30... Rc4 $142 31. fxg6 hxg6 32. h7+ Kxh7 33. Rxf7+ Kg8) 31. Bxf5 Rb8 32. Re4 Rc7 33. Ref4 Nb6 {[#]} 34. Be4 $2 (34. Bxh7+ $1 {[%mdl 512]} Kxh7 35. Rxf7+ Kg6 36. Rg7+ Kh5 37. Rh1+ Kg4 38. h7) 34... Rf8 35. g6 hxg6 {[#]} 36. Bxg6 $1 {[%mdl 512]} f6 (36... fxg6 37. Rxf8+) 37. Bf5 Kh8 38. Be6 Na4 (38... Rc4 $142 39. b3 Rxc3) 39. Rg4 {Intending h7! and mate.} Nc5 $2 (39... Rc4 40. Rg7 Rh4) 40. Bf5 e5 41. dxe6 {[%cal Bd5e6,Be6e7][%mdl 32]} Nb3 42. Kc2 Na5 43. Rfg1 {White threatens h7 and mate.} Nc4 44. R1g3 {White mates.} Re8 45. h7 Rcc8 {[#]} 46. e7 $1 Rb8 {[#]} (46... Rxe7 47. Rg8+) 47. Rg8+ $1 {Precision: White = 60%, Black = 41%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Slipak, Sergio"]
[Black "Krysa, Leandro"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2465"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,100,0,-31,-16,-13,-17,-20,-27,-52,-40,-74,-91,-95,-71,-70,-85,-109,-121,-141,-129,-111,-143,-155,-129,-118,-125,-122,-117,-114,-120,-200,-201,-219,-204,-206,-188,-183,-191,-177,-177,-192,-178,-196,-181,-191,-165,-168,-166,-168,-170,-173,-155,-154,-157,-242,-243,-261,-261,-244,-199,-203,-194,-200,-190,-247,-240,-240,-240,-254,-236,-230,-216,-252,-200,-663,-666,-805,-785,-739,-693,-693,-693,-693,-693,-686,-693,-693,-693,-1268,-1268]} 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. O-O e6 7. e5 a6 {B23: Closed Sicilian: Lines without g3} (7... Ne7 8. Nxd4 cxd4 9. Ne4 O-O 10. b3 d5 11. Nd6 f6 12. Nxc8 Rxc8 13. exf6 Rxf6 14. Ba3 Nc6 15. Qe2 {½-½ (52) Dimitrov,R (2445)-Naiditsch,A (2724) Bastia 2013}) 8. Bd3 f5 9. b3 d6 {The position is equal.} 10. Bb2 Ne7 11. Ne2 Nxf3+ 12. Rxf3 Nc6 {[%cal Rd6e5]} 13. Re3 O-O 14. Qe1 {[#]} b5 $146 ({Predecessor (2):} 14... Bd7 15. Kh1 {0-1 (31) Lilov,V (2434)-Spasov,V (2565) Albena 2013}) 15. a4 Rb8 $1 16. axb5 axb5 17. c4 {[%cal Bc2c4,Bc4b5][%mdl 32]} dxe5 18. cxb5 exf4 19. Bxg7 fxe3 20. Bxf8 Qxd3 21. dxe3 (21. Bh6 $17 exd2 22. Qxd2 Qxd2 23. Bxd2 Rxb5 24. Ra8) 21... Qxe3+ $19 ({Inferior is} 21... Kxf8 22. bxc6 Rxb3 23. Nf4 $11) ({But not} 21... Rxb5 22. Bh6 Qxb3 23. e4 $1 $17 {[%mdl 512]}) 22. Kf1 Rxb5 (22... Kxf8 23. bxc6 f4 24. Qh4 $11) 23. Bd6 Bb7 24. Nf4 Rxb3 25. Qxe3 Rxe3 26. Bxc5 Re4 27. Nd3 Kf7 28. Bf2 Kf6 29. Nc5 Rb4 30. Rd1 Bc8 31. Rd6 Ne7 32. Bd4+ {[#]} Kf7 $1 33. Nd3 {[#]} (33. Ke1 $17) 33... Ba6 $1 {[%cal Ra6d3][%mdl 512]} 34. Rxa6 Rxd4 {[%mdl 4096] Endgame KRN-KRN} 35. Nc5 e5 36. Ne6 Rd1+ 37. Ke2 Rh1 38. h3 (38. Kf2 {was worth a try.}) 38... h6 39. Nd8+ Ke8 40. Ra8 Kd7 41. Nf7 e4 {[%cal Be5e4,Be4e3,Be3e2][%mdl 32]} 42. Nxh6 Rb1 43. Ke3 $2 (43. Nf7) 43... Nd5+ {Black is clearly winning.} 44. Kd4 Rd1+ 45. Kc5 e3 {Strongly threatening ...e2.} 46. Nf7 e2 47. Ne5+ Ke7 48. Nf3 Nf4 49. Ra7+ Kf6 50. g4 Ne6+ {Precision: White = 54%, Black = 85%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Dolezal, Cristian"]
[Black "Sosa, Tomas"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2401"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,130,20,23,12,12,14,12,0,0,-11,-7,-5,-6,-22,-18,-27,-16,0,3,-12,0,-14,-12,-40,0,-46,-40,-42,-42,-51,-33,-40,-45,-60,-50,-58,-50,-98,-29,-29,-29,-29,-29,-29,-29,-29,-26,-29,-15,-15,-16,-58,-61,-58,-39,-32,-36,-58,-49,-46,-64,-119,-64,-99,-95,-190,-75,-137,-118,-128,0,-115,-101,-118,-118,-85,-96,-106,-85,-218,-208,-242,-227,-375,-236,-235,-239,-220,-219,-347,-239,-238,-231,-231,-225,-180,0,-1,-4,-237,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 Be7 7. Bd3 c6 8. Qc2 Nh5 9. Bxe7 Qxe7 10. O-O-O Nb6 11. Kb1 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} (11. h3 g6 12. Nf3 Be6 13. Kb1 O-O-O 14. Nd2 Ng7 15. g4 Kb8 16. Nb3 h5 17. f3 Bc8 18. Qf2 hxg4 19. hxg4 Ne6 20. f4 {0-1 (75) Nakamura,H (2793)-Onischuk,A (2667) Saint Louis 2017}) 11... g6 12. h3 Ng7 13. Nf3 Bf5 14. g4 Bxd3 15. Qxd3 O-O-O 16. Rc1 $146 ({Predecessor:} 16. Rhe1 h5 17. Ne5 Nd7 18. Nxd7 Qxd7 {1-0 (33) Deglmann,L (2332)-Rombaldoni,D (2496) Vienna 2013}) 16... Kb8 17. Ne2 {[%cal Bc3e2,Be2f4,Bf4d3,Bd3c5][%mdl 32]} Ne8 18. Nf4 $1 Nd6 19. b3 Ne4 20. Qc2 Nd7 21. Nd3 f6 22. Nfe1 g5 23. f3 $1 {[%cal Rf3e4]} Nd6 24. Qd2 h5 25. Nc2 Rh6 26. Nc5 Rdh8 {aiming for ...hxg4.} 27. Rhf1 hxg4 28. hxg4 Nb5 (28... Nxc5 $17 29. dxc5 Nb5) 29. Nxd7+ $11 Qxd7 30. Rf2 Qd6 31. Kb2 Rh2 32. Rcf1 Qg3 33. Qe1 Nd6 34. Rxh2 Qxh2 35. Qf2 a5 36. Qe1 Qg2 37. Rf2 Qg3 38. Qe2 Rh1 39. Rg2 $1 {[%cal Rg2g3]} Qh3 40. Qf2 ({White should try} 40. a4 $15) 40... Kc7 (40... b5 $17 41. Rg3 Qh4) 41. Kc3 b6 42. Kd2 {[#]} (42. Rg3 $17 Qh4 43. Rg2) 42... a4 $1 {[%mdl 512]} 43. Rg3 (43. Kc3 $142) (43. bxa4 Nc4+) 43... Qh4 $17 44. Rg2 Qh3 45. Rg3 $1 {[%cal Rg3h3]} Qh8 46. Rg1 Rh2 47. Rg2 Rh3 48. Rg3 Rh7 49. Rg1 {[#]} (49. Kc1 $17) 49... Qa8 $1 $19 50. Qg3 Kd7 51. b4 (51. e4 {was called for.}) 51... Qh8 52. Qf2 Rh2 53. Rg2 Rh3 54. Rg3 (54. Ne1 {is a better defense.}) 54... Nc4+ 55. Kc3 Qh4 56. Rg2 Qh7 57. Rg3 Kc8 $2 (57... Rh1 $19 58. Rg1 Rh3) 58. Rxh3 $11 Qxh3 59. b5 $2 (59. Qe2 $11) 59... Qh1 $2 (59... cxb5 $19 {And now ...Qh1 would win.} 60. Qe2 (60. Nb4 Qh1 61. Nd3 Qa1+ 62. Kb4 Qd1 $19) 60... Qh1) 60. bxc6 {The position is equal.} Qc1 {...Qb2+ is the strong threat.} (60... Qb1 $5 61. Qh2 $8 Qb2+ 62. Kd3 Qc1 $11) 61. Qe1 Qb2+ 62. Kd3 $132 {[%mdl 2048] White is not keeping still (4)} Qxa2 {Threatens to win with ...Nb2+.} 63. Qb4 {Hoping for Qf8+.} Qb3+ 64. Qxb3 axb3 65. Nb4 {[#]} Nxe3 $1 {[%mdl 512] Precision: White = 48%, Black = 64%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.03"]
[Round "4"]
[White "Scarella, Enrique Alejandro"]
[Black "Valerga, Diego"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2335"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,70,50,52,18,10,8,24,8,9,0,2,0,-7,-27,-30,-43,-11,-83,-65,-58,-8,-19,8,-13,0,-79,-77,-94,-77,-128,-102,-111,-117,-223,-225,-293,-290,-282,-197,-228,-138,-272,-100,-211,-213,-385,-345,-756,-754,-691,-307,-1022,-730,-1156,-1138]} 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. g3 O-O 7. Bg2 d6 8. O-O Re8 9. a3 Nc6 10. Nbd2 {E11: Bogo-Indian} (10. axb4 Nxb4 11. Nc3 Bd7 12. Qb3 a5 13. e4 e5 14. Rad1 Qc7 15. Rfe1 Bg4 16. Nb5 Qc6 17. Nxd6 Bxf3 18. Nxe8 Bxd1 19. Nxf6+ Qxf6 20. Qxd1 exd4 {1-0 (33) Cheparinov,I (2678)-Moiseenko,A (2711) Khanty-Mansiysk 2013}) 10... bxa3 11. Rxa3 e5 12. d5 {White has an edge.} Nb4 $1 13. Qb3 a5 14. e4 Nd7 $146 ({Predecessor:} 14... b6 15. Ne1 Nd7 16. Nd3 Nxd3 17. Qxd3 Nc5 {Celestini,M (1830)-Simoni (1845) corr 1994}) 15. Ne1 Nc5 16. Qe3 Bd7 (16... b5 {creates tension.} 17. cxb5 Bd7 18. Bf3 Bxb5 19. Be2 Bd7) 17. Nb3 (17. f4 $11) 17... Nxb3 $17 18. Rxb3 Rc8 19. Rc3 Rc5 20. f4 f6 21. Rf2 (21. fxe5 $11 Rxe5 22. Nf3) 21... exf4 22. gxf4 {[#]} b5 $1 23. Qd4 (23. b3 $142) 23... Rxc4 24. Rxc4 bxc4 25. Nc2 (25. Rf3 $17) 25... Nd3 $19 26. Rf1 Qb8 27. Qxc4 Nxb2 28. Qd4 {[#] Black must now prevent Rb1.} Qb3 29. Rf2 (29. Qa7 $17 Bc8 30. Ne3) 29... a4 $2 (29... Nd3 $19 {and Black stays clearly on top.} 30. Na1 Qd1+ 31. Rf1 Qe2) 30. Qa7 (30. Bf1 $17) 30... Bc8 31. Bf3 $2 (31. Nd4 Qe3 32. Nb5 Qxa7 33. Nxa7) 31... Nd3 $1 {[%csl LRf2,LRf4]} 32. Bh5 $2 (32. Nd4 Qc4 33. Ne6 Bxe6 34. dxe6 Rxe6 35. Qa8+ Kf7 36. f5) 32... g6 33. Nd4 Qb7 (33... Qb4 $142 34. Nc6 Qc3) 34. Qxa4 $2 (34. Qxb7 Bxb7 35. Rd2 Rxe4 36. Rxd3) 34... Bd7 35. Qc2 Nxf2 {Precision: White = 35%, Black = 57%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Mareco, Sandro"]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2655"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,55,30,20,18,22,27,17,29,29,21,10,12,12,23,4,40,20,24,31,22,0,149,161,198,187,306,189,176,192,251,256,377,298,642,358,1182,1151,4994,654,4922,2864]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 O-O 8. O-O d6 {[%cal Bd7d6,Bd6d5][%mdl 32]} 9. Qf4 {LiveBook: 14 Games. E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+} Ne4 10. Rd1 $146 ({Predecessor (2):} 10. Nfd2 e5 11. Qe3 Nxd2 12. Bxb7 Nxf1 13. Kxf1 Nd7 14. Bxa8 Qxa8 15. Kg1 e4 16. Nc3 Nf6 {½-½ (27) Jumabayev,R (2550)-Lysyj,I (2617) Martuni 2009}) 10... f5 11. Qe3 {White has an edge.} Qf6 12. Nfd2 {[%cal Rd2e4]} d5 13. Nxe4 fxe4 14. Nc3 Nd7 15. Bh3 {[#] aiming for cxd5.} Rad8 16. Nb5 {[%cal Bc3b5,Bb5d4,Bd4e6][%mdl 32]} c5 17. cxd5 exd5 18. Rac1 {[%cal Rd4c5]} (18. Nc7 $5 {[%cal Rc7e6]}) 18... cxd4 (18... a6 $11 19. Nc7 Rf7) 19. Nxd4 $16 ({But not} 19. Qxd4 $6 Ne5 $11) 19... Ne5 {[#]} 20. Ne6 $1 d4 (20... Bc8 $142 21. Rxc8 (21. Nxf8 Bxh3 22. Rc7 Kxf8 23. Rxa7 Ng4 $17) 21... Rxc8) 21. Rxd4 ({Not} 21. Nxd4 Nd3 22. exd3 Rxd4 $16) 21... Rxd4 22. Nxd4 Rd8 (22... Nc6 $142) 23. Ne6 Rd6 (23... Rc8 $142 24. Rxc8+ Bxc8) 24. Ng5 Qd8 $2 (24... Nf7) 25. f4 exf3 $2 (25... Rd1+ 26. Rxd1 Qxd1+ 27. Kf2 Nd7 28. Be6+ Kf8 29. Nxh7+ Ke7) 26. Qxe5 $18 {White threatens Be6+ and mate.White is clearly winning.} f2+ 27. Kxf2 {Threatening mate with Be6+.} Rf6+ 28. Kg1 {Precision: White = 78%, Black = 31%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Della Morte, German"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2554"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 32,93,94,93,223,215,223,220,221,218,218,195,193,194,228,228,217,168,169,158,211,211,214,212,235,211,340,183,387,386,632,597,793,526,995,964,925,377,345,343,350,358,349,293,366,177,316,258,770,761,851,703,1182,976,1022,1047,29986,29987,29988,29989,29992,29993,29996,29997]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O Nxd4 10. Bxd4 Be6 11. Kb1 Qc7 12. g4 Rfc8 13. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Qa5 14. a3 Rab8 15. h5 b5 16. h6 Bh8 {[#] B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0} 17. g5 $1 {[%cal Rg5f6] LiveBook: 8 Games} (17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 Rc7 20. Be3 Nd7 21. f4 b4 22. a4 Bc3 23. Rd3 Bh8 24. Rd1 Nb6 25. Bxb6 Rxb6 26. Rh3 a5 27. Bb5 Rbb7 28. Rd2 Rb8 29. Ka2 Rbc8 {½-½ (29) Chripko,L (2560)-Joppich,U (2445) ICCF email 2010}) 17... Ne8 (17... b4 $16 18. Nb5 Ne8) 18. Nd5 $18 Qd8 {White is clearly better.} 19. Bxa7 Bxd5 $146 ({Predecessor:} 19... Ra8 20. Bb6 Qd7 21. Nb4 f6 22. f4 Qb7 23. Bd4 Bg4 24. Be2 Bxe2 25. Qxe2 {½-½ (37) Benza,A (2295)-Olenin,N (2394) Tula 2007}) 20. exd5 Rb7 21. Bd4 Bxd4 22. Qxd4 Qc7 23. c3 Qc5 24. Bh3 Qxd4 25. Rxd4 ({But not} 25. cxd4 $6 Ra8 $16) 25... Rc5 (25... Rcb8 $16 26. Re1 f5 27. gxf6 Nxf6 28. Be6+ Kh8) 26. Re1 Kf8 27. f4 Nc7 28. Red1 Na8 (28... Ra7 {is a better defense.} 29. f5 gxf5 30. Bxf5 e5) 29. Rf1 (29. f5 $142 gxf5 30. Bxf5) 29... Kg8 $2 (29... f5 30. gxf6 exf6) 30. f5 gxf5 $2 (30... Rc4 31. fxg6 hxg6 32. h7+ Kxh7 33. Rxf7+ Kg8) 31. Bxf5 Rb8 32. Re4 Rc7 33. Ref4 Nb6 {[#]} 34. Be4 (34. Bxh7+ $142 $1 {[%mdl 512]} Kxh7 35. Rxf7+ Kg6 36. Rg7+ Kh5 37. Rh1+ Kg4 38. h7) 34... Rf8 35. g6 hxg6 {[#]} 36. Bxg6 $1 {[%mdl 512]} f6 (36... fxg6 37. Rxf8+) 37. Bf5 Kh8 38. Be6 (38. Rg4 $142 Nc4 39. Re1) 38... Na4 (38... Rc4 $142 39. b3 Rxc3) 39. Rg4 {Intending h7! and mate.} Nc5 $2 (39... Rc4 40. Rg7 Rh4) 40. Bf5 e5 41. dxe6 {[%cal Bd5e6,Be6e7][%mdl 32]} Nb3 42. Kc2 Na5 43. Rfg1 {h7 would kill now.} Nc4 44. R1g3 {White mates.} Re8 45. h7 Rcc8 46. e7 Rb8 {[#]} 47. Rg8+ $1 {Precision: White = 66%, Black = 45%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Della Morte, German"]
[Result "*"]
[ECO "C91"]
[WhiteElo "2554"]
[BlackElo "2375"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,41,11,45,50,45,48,34,16,24,22,33,30,62,23,26,4,9,0,0,-8,-8,-17,0,-1,29,27]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 {[%cal Bg8f6,Bf6d7,Bd7b6][%mdl 32]} 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Nd7 10. Nbd2 {C91: Closed Ruy Lopez: 7...d6 8 c3 0-0 9 d4} (10. h3 Bf6 11. a4 Bb7 12. d5 Ne7 13. axb5 axb5 14. Rxa8 Qxa8 15. Na3 Ba6 16. Nc2 Nc5 17. Ne3 Nxb3 18. Qxb3 g6 19. Bd2 Bg7 20. Ra1 Qc8 21. Qb4 Qb7 22. c4 bxc4 23. Qxb7 Bxb7 24. Ra7 {1-0 (57) Sutovsky,E (2665)-Bologan,V (2700) Sochi 2005}) 10... Na5 11. Bc2 c5 12. d5 {White is slightly better.} Nb6 13. Nf1 Bf6 $146 ({Predecessor:} 13... f5 14. exf5 Bxf5 15. Bxf5 Rxf5 16. Ng3 Rf8 17. Ne4 h6 18. b3 {½-½ (52) Deen Cowell,N (1662)-Yu,D (1908) Canberra 2010}) 14. b3 g6 15. h3 Bg7 16. g4 Nb7 17. Bg5 Qc7 18. Ng3 c4 19. b4 a5 20. a3 {[%cal Ba2a3,Ba3b4][%mdl 32]} axb4 21. axb4 {Precision: White = 65%, Black = 62%.} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Krysa, Leandro"]
[Black "Real De Azua, Ernesto"]
[Result "1-0"]
[ECO "E21"]
[WhiteElo "2517"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,39,-19,-8,-18,-1,0,0,-8,54,35,87,81,85,87,104,98,118,120,156,168,203,204,197,210,193,188,300,294]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 c5 6. a3 Ba5 7. dxc5 {E21: Nimzo-Indian: 4 Nf3} (7. Bd2 O-O 8. e3 Nc6 9. Be2 d5 10. O-O cxd4 11. exd4 Bxc3 12. Bxc3 dxc4 13. Bxc4 Bb7 14. Rfe1 Ne7 {1-0 (31) Tran,T (2503)-Michalik,P (2578) Ho Chi Minh City 2017}) 7... bxc5 {LiveBook: 5 Games} 8. Bf4 Nc6 9. O-O-O {The position is equal.} O-O 10. e3 Qb6 (10... Re8 $11) 11. Qxb6 $14 axb6 {[#]} ({Black should play} 11... Bxb6 $14 12. Bd6 Rd8) 12. Nb5 $1 $16 Ne4 13. Bg3 $1 h6 $146 ({Predecessor:} 13... Nxg3 14. hxg3 h6 {1-0 (30) Marcetic,N (2401)-Milanovic,D (2428) Belgrade 2004}) 14. Bd3 $36 {[%cal Bf1d3,Bd3c2,Bc2a4][%mdl 2080] White has strong initiative.} f5 15. Nd6 Nxg3 16. hxg3 {[%cal Bh2g3,Bg3g4][%mdl 32]} Ba6 17. Bc2 Ra7 18. Ba4 Rfa8 19. Rh4 Kf8 (19... Rc7 $142 20. g4 fxg4 21. Rxg4 Rf8) 20. g4 {Precision: White = 98%, Black = 29%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Valerga, Diego"]
[Black "Peralta, Fernando"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2460"]
[BlackElo "2565"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,58,0,10,0,6,-2,0,-33,-10,-14,-22,-72,-76,-66,-72,-103,-81,-97,-79,-81,-73,-153,-145,-218,-113,-92,-96,-87,49,-237,-244,-230,-237,-258,-254,-270,-264,-468,-392,-1063,-1085,-29996,-29997,-29997,-29998]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. Nge2 dxe4 6. a3 Be7 7. Bxf6 Bxf6 8. Nxe4 O-O 9. Qd2 {C12: French: Classical System: McCutcheon Variation} Nd7 10. O-O-O Be7 11. g3 {The position is equal.} c6 $146 ({Predecessor:} 11... b5 12. Bg2 Rb8 13. d5 e5 14. d6 cxd6 15. Nxd6 Nc5 16. Nxc8 Qxc8 {0-1 (26) Friedrich,N (2325)-Lputian,S (2610) Berlin West 1989}) 12. Bg2 b5 13. h4 Rb8 14. Nf4 b4 15. axb4 Bxb4 16. c3 Be7 17. Qc2 Qa5 18. Kd2 {[#]} (18. Nd3 $142) 18... e5 $1 $17 {[%cal Re5f4]} 19. Ng5 {[#]} (19. b4 $17 {keeps fighting.} Bxb4 20. cxb4 Qxb4+ 21. Qc3 (21. Ke3 $2 exf4+ 22. Kxf4 c5 $19) 21... exf4 22. Qxb4 Rxb4 23. Kc3) 19... Nf6 ({Black should try} 19... g6 $1 $19 20. Ne2 (20. Ra1 $2 Qb6 21. Nd3 exd4 22. cxd4 Ba6 $17) 20... exd4 21. Nxd4 Ne5) 20. dxe5 Qxe5 21. Rhe1 Qc5 ({Black should play} 21... Qa5 $17 {And now ...Bg4 would win.} 22. Nd3 (22. Rxe7 Qd8+ 23. Kc1 Qxe7 24. Bxc6 g6 $17) 22... Bf5) 22. b4 $2 {[%mdl 8192]} (22. Kc1 $14 {stays ahead.} Bf5 23. Nd3) 22... Qxf2+ $19 23. Kc1 Qxg3 24. Rxe7 {Threatens to win with Nh5.} Qxf4+ 25. Qd2 Qc4 {aiming for ...Rxb4.} ({Much less strong is} 25... Qxh4 26. Nf3 Qg3 27. Bh1 $19) 26. Rc7 $2 (26. Bf1 {was necessary.} Qxh4 27. Nf3) 26... Rxb4 {[%cal Bb8b4,Bb4b1,Bb1b2][%mdl 32]} 27. Rxc6 $2 {[#]} (27. Qd4) 27... Bf5 $1 {[%csl Gf5][%cal Rb4b1][%mdl 512]} 28. Qd6 Rb1+ 29. Kd2 Rb2+ {Precision: White = 29%, Black = 78%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Sosa, Tomas"]
[Black "Benoit, Rodrigo"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2459"]
[BlackElo "2151"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,93,77,71,116,93,199,196,218,214,226,224,247,204,191,181,241,227,233,159,161,166,211,211,214,214,240,227,316,186,394,412,708,702,816,497,1010,985,944,410,408,388,375,399,355,377,364,202,340,276,807,807,931,742,1034,1019,1127,1078,29986,29987,29988,29989,29992,29993,29996,29997]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O Nxd4 10. Bxd4 Be6 11. Kb1 Qc7 12. g4 Rfc8 13. h4 {[%cal Bh2h4,Bh4h5,Bh5h6][%mdl 32]} Qa5 14. a3 Rab8 15. h5 b5 16. h6 Bh8 {[#] B76: Sicilian Dragon: Yugoslav Attack, 9 g4 and 9 0-0-0} 17. g5 $1 {[%cal Rg5f6]} (17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 Rc7 20. Be3 Nd7 21. f4 b4 22. a4 Bc3 23. Rd3 Bh8 24. Rd1 Nb6 25. Bxb6 Rxb6 26. Rh3 a5 27. Bb5 Rbb7 28. Rd2 Rb8 29. Ka2 Rbc8 {½-½ (29) Chripko,L (2560)-Joppich,U (2445) ICCF email 2010}) 17... Ne8 (17... Nd7 $16 {is a better defense.}) 18. Nd5 $18 Qd8 {White is clearly better.} 19. Bxa7 Bxd5 $146 ({Predecessor:} 19... Ra8 20. Bb6 Qd7 21. Nb4 f6 22. f4 Qb7 23. Bd4 Bg4 24. Be2 Bxe2 25. Qxe2 {½-½ (37) Benza,A (2295)-Olenin,N (2394) Tula 2007}) 20. exd5 Rb7 21. Bd4 Bxd4 22. Qxd4 Qc7 (22... Qb6 {was worth a try.} 23. Qxb6 Rxb6) 23. c3 Qc5 24. Bh3 Qxd4 25. Rxd4 ({Don't take} 25. cxd4 Rcb8 $16) 25... Rc5 26. Re1 Kf8 27. f4 Nc7 28. Red1 Na8 29. Rf1 (29. f5 $142 gxf5 30. Rf1) 29... Kg8 $2 (29... f5 30. gxf6 exf6) 30. f5 gxf5 (30... Rc4 $142 31. fxg6 hxg6 32. h7+ Kxh7 33. Rxf7+ Kg8) 31. Bxf5 Rb8 32. Re4 Rc7 (32... Re8 $142 33. Bd7 Rf8 34. Rxe7 Rc7) 33. Ref4 Nb6 {[#]} 34. Be4 (34. Bxh7+ $142 $1 {[%mdl 512]} Kxh7 35. Rxf7+ Kg6 36. Rg7+ Kh5 37. Rh1+ Kg4 38. h7) 34... Rf8 35. g6 hxg6 {[#]} 36. Bxg6 $1 {[%mdl 512]} f6 (36... fxg6 37. Rxf8+) 37. Bf5 Kh8 38. Be6 (38. Rg4 $142 Nc4 39. Re1) 38... Na4 (38... Rc4 $142 39. b3 Rxf4 40. Rxf4 Na8) 39. Rg4 {h7! would kill now.} Nc5 $2 (39... Rc4 40. Rg7 Rh4) 40. Bf5 e5 41. dxe6 {[%cal Bd5e6,Be6e7][%mdl 32]} Nb3 42. Kc2 Na5 43. Rfg1 {White threatens h7 and mate.} Nc4 44. R1g3 {White mates.} Re8 45. h7 Rcc8 {[#]} 46. e7 $1 Rb8 {[#]} (46... Rxe7 47. Rg8+) 47. Rg8+ $1 {Precision: White = 77%, Black = 44%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Sosa, Tomas"]
[Black "Benoit, Rodrigo"]
[Result "*"]
[ECO "B08"]
[WhiteElo "2459"]
[BlackElo "2151"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,35,65,37,51,32,49,39,82,83,66,71,108,82,86,91,102,80,105,79]} 1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 O-O 6. O-O c6 7. a4 a5 8. h3 Na6 9. Re1 Nb4 10. Bf1 {LiveBook: 25 Games} d5 {B08: Pirc Defence: Classical System} (10... e5 11. Be3 Re8 12. dxe5 dxe5 13. Qc1 Qc7 14. Bc4 b6 15. Ng5 Rf8 16. Rd1 h6 17. Nf3 Kh7 18. Rd2 {½-½ (70) Cabezas Ayala,I (2318)-Manolache,M (2492) Pontevedra 2016}) 11. exd5 Bf5 $146 ({Predecessor:} 11... cxd5 12. Nb5 Bf5 13. Na3 Ne4 14. c3 Nc6 15. Nb5 h6 16. Nh4 Bc8 17. Be3 e5 18. Nf3 exd4 19. Nbxd4 {½-½ (27) Hosek,M (2265)-Stehno,P (2252) Czechia 2002}) 12. Re2 cxd5 {White is slightly better.} 13. Nb5 Ne4 14. Bf4 Bd7 {White is better.} 15. c3 Na6 16. Qb3 Bc6 17. Ne5 Qb6 18. Qa2 {Precision: White = 64%, Black = 84%.} *

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.04"]
[Round "5"]
[White "Salinas Herrera, Pablo"]
[Black "Dolezal, Cristian"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2453"]
[BlackElo "2401"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,107,57,23,56,39,38,40,68,77,91,102,96,100,88,97,92,93,113,84,385,377,356,361,393,402,396,407,379,327,332,336,365,361,359,339,344,283,527,488,525,506,631,543,620,561,560,524,680,492,511,515,520,518,518,504,504,497,497,495,530,529,528,526,536,537,537,508,544,543,537,529,699,674,750,743,743,739,798,766,1327,1266,825,808,1379,1230,1602,772,6625,6149,6056,5930]} 1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 O-O 6. O-O c6 7. a4 a5 8. h3 Na6 9. Re1 Nb4 10. Bf1 {LiveBook: 25 Games} d5 {B08: Pirc Defence: Classical System} (10... e5 11. Be3 Re8 12. dxe5 dxe5 13. Qc1 Qc7 14. Bc4 b6 15. Ng5 Rf8 16. Rd1 h6 17. Nf3 Kh7 18. Rd2 {½-½ (70) Cabezas Ayala,I (2318)-Manolache,M (2492) Pontevedra 2016}) 11. exd5 (11. e5 $5 {[%cal Re5f6]} Ne8 12. Nb1 $14) 11... Bf5 $146 ({Predecessor:} 11... cxd5 12. Nb5 Bf5 13. Na3 Ne4 14. c3 Nc6 15. Nb5 h6 16. Nh4 Bc8 17. Be3 e5 18. Nf3 exd4 19. Nbxd4 {½-½ (27) Hosek,M (2265)-Stehno,P (2252) Czechia 2002}) 12. Re2 cxd5 {White is slightly better.} 13. Nb5 Ne4 14. Bf4 Bd7 15. c3 Na6 16. Qb3 Bc6 17. Ne5 Qb6 18. Qa2 Rad8 $2 {[%mdl 8192] [#]} (18... Qd8 $16 {is more resistant.}) 19. Rxe4 $1 $18 {[%mdl 512]} dxe4 20. Nc4 Bd5 21. Nxb6 Bxa2 22. Rxa2 e5 23. Be3 ({Don't take} 23. dxe5 Rd1 24. Nc4 Nc5 $18) 23... exd4 24. Nxd4 (24. cxd4 Nb4 $18) 24... Nb4 25. Ra1 Bxd4 26. cxd4 ({Resist} 26. Bxd4 Nc2 $18) 26... Nc2 27. Rd1 f5 $2 (27... Rd6) 28. Bc4+ {White is clearly winning.} Kg7 29. Bf4 Rfe8 30. Nd5 h6 31. Bb3 g5 32. Be5+ Kg6 33. Bxc2 Rxd5 34. g4 b5 35. axb5 Rxb5 36. Ba4 Rexe5 37. dxe5 Rxe5 {[%mdl 4096] Endgame KRB-KR} 38. Rd6+ Kg7 39. gxf5 Rxf5 40. Re6 Rf4 41. Bc2 Rf5 42. Rxe4 Rb5 43. b3 Kf6 44. Rc4 Rd5 45. Rc6+ Ke5 46. Rxh6 Rc5 47. Bh7 Rb5 48. Bg8 Kd4 49. Bc4 Re5 50. Ra6 Kc3 51. Kg2 Kb4 52. Kg3 Rf5 53. Rb6+ Kc3 54. Rb5 {Precision: White = 91%, Black = 38%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Peralta, Fernando"]
[Black "Pierrot, Facundo"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2565"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,88,19,22,52,52,60,56,55,0,70,13,67,70,75,64,74,26,33,35,60,32,32,23,27,23,44,41,57,51,56,13,27,0,0,6,6,11,5,-16,-13,-18,-20,-34,-29,-29,0,0,0,-14,0,0,0,0,34,31,50,57,52,69,65,15,44,0,0,-183,0,-763,-755]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bb5+ c6 8. Ba4 O-O 9. Ne2 e5 10. O-O Nd7 11. Bb3 Qe7 12. Qc2 {LiveBook: 15 Games. D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} b6 13. a4 {[#]} Ba6 $146 ({Predecessor:} 13... exd4 14. cxd4 Ba6 15. Rd1 Nc5 16. Ba3 Qxe4 17. Qxe4 Nxe4 18. Bxf8 Bxe2 19. Re1 Bxd4 20. Rxe2 Bxa1 {0-1 (43) Dao,T (2580)-Ivanchuk,V (2730) Cap d'Agde 1998}) 14. Ba3 $1 {[%cal Ra3e7] White is slightly better.} c5 {[%cal Re5d4]} 15. Rad1 (15. d5 $14) 15... Rfe8 ({Black should try} 15... Qh4 $11) 16. f3 (16. d5 $14) 16... Rad8 (16... exd4 $11 17. cxd4 Qg5) 17. d5 $1 $14 Nf6 {[%cal Bd7f6,Bf6e8,Be8d6][%mdl 32]} 18. Qa2 Rf8 19. Bc4 Qb7 20. Bb2 Ne8 21. Bxa6 Qxa6 22. c4 Nd6 23. Rc1 Rde8 24. Qb3 Qb7 25. Rc2 Qd7 26. a5 Rb8 (26... bxa5 $5 27. Nc1 a4 $16) 27. Qa2 b5 28. cxb5 Qxb5 29. Bc1 {[%cal Bb2c1,Bc1g5,Bg5e3][%mdl 32]} Rfc8 30. Bg5 c4 31. Be3 Qa6 32. Rb1 Rxb1+ 33. Qxb1 Qxa5 (33... Nb5 $5 {[%cal Rb5a3]} 34. Qa1 c3 $11) 34. Ra2 $36 {[%mdl 2048] White has good play.} Qb5 35. Rb2 Qd7 36. Nc3 a5 37. Rb6 a4 38. Ra6 Qc7 39. Qb4 Bf8 $1 {...Nf5 is the strong threat.} 40. Qxa4 Rb8 {[%cal Bc8b8,Bb8b3,Bb3c3][%mdl 32]} 41. Rc6 Qd8 42. Qc2 Rb3 43. Ra6 $2 {[#]} (43. Bd2 $11 {and White has nothing to worry.}) 43... Qb8 $2 (43... Nb5 $1 $19 44. Nd1 (44. Nxb5 $2 Rxe3 45. Qxc4 Re1+ 46. Kf2 Rb1 $19) 44... Na3) 44. Ra2 $2 {[%mdl 8192] [#]} (44. h3 $11) 44... Rxc3 $1 {[%mdl 512] Precision: White = 53%, Black = 58%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Morovic Fernandez, Ivan"]
[Black "Lopez Azambuja, Nicolas"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2527"]
[BlackElo "2269"]
[Annotator "TA"]
[PlyCount "193"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,193,0,0,0,0,0,0,-6,-9,2,0,0,6,161,175,220,231,231,218,403,247,239,242,247,235,747,329,309,300,283,136,137,139,137,137,138,137,157,156,158,156,159,151,144,143,143,138,153,105,143,143,143,143,130,130,143,143,143,143,143,116,155,152,140,137,144,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,105,105,105,105,105,105,105,105,105,105,105,105,105,105,106,106,118,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,127,0]} 1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. b3 Nc6 6. Bb2 Bd6 7. O-O O-O 8. a3 b6 9. Nbd2 Bb7 {D05: Colle System with ...e6} 10. Qe2 Rc8 11. Rfd1 (11. Ne5 Ne7 12. dxc5 bxc5 13. c4 Qc7 14. f4 Nf5 15. cxd5 Nxd5 16. Ndc4 Nf6 17. e4 {½-½ (68) Sambuev,B (2539)-Mareco,S (2645) chess.com INT 2017}) 11... Re8 $146 {The position is equal.} ({Predecessor:} 11... Qe7 12. Ne5 Na5 13. f4 Rfd8 14. Ndf3 Ne4 15. dxc5 bxc5 16. Bxe4 dxe4 17. Nd2 {0-1 (53) Ratkovic,M (2402)-Zajic,M (2480) Belgrade 2016}) 12. Ne5 Qc7 {[%cal Rc6e5]} 13. f4 Ne7 14. Rac1 Ne4 $2 (14... Ng6 $11 {and Black has nothing to worry.}) 15. dxc5 $1 $18 bxc5 16. Bxe4 $1 dxe4 17. Ndc4 Rcd8 $2 (17... Nd5 18. Nxd6 Qxd6) 18. Rxd6 ({Less strong is} 18. Nxd6 Rxd6 19. Rxd6 Qxd6 $18) 18... Rxd6 19. Nxd6 Qxd6 20. Rd1 Qb6 $2 (20... Nd5 21. c4 Qe7 22. cxd5 exd5) 21. Rd7 (21. Qh5 $142 Ng6 22. Nxf7 $1 {[%mdl 512]} Kxf7 23. Qxh7) 21... Ng6 22. Qh5 Rf8 {[#]} 23. Nxg6 (23. Ng4 $1 $18 Qa5 24. b4) 23... hxg6 $16 24. Qe5 {[%csl Gb2][%cal Re5g7]} f6 25. Qc7 Qxc7 26. Rxc7 {[%mdl 4096] Endgame KRB-KRB} Rb8 27. Kf2 c4 28. Rxc4 Rc8 29. Rxc8+ Bxc8 {KB-KB} 30. Bd4 a6 31. h4 Kf7 32. g4 e5 33. fxe5 Bxg4 34. Ke1 Ke6 35. c4 g5 36. exf6 gxf6 37. hxg5 fxg5 38. Kd2 Bh5 39. Ba7 Kf5 40. a4 Kg4 {[#]} 41. Kc3 ({White must play} 41. b4 $1 $16) 41... Be8 $1 $11 42. Kd4 Kf3 43. Bb8 g4 44. a5 Bc6 45. b4 ({Not} 45. Kc5 $2 Kxe3 46. b4 (46. Kxc6 $2 Kf3 $19) 46... Kf2 $19) 45... g3 46. Bf4 g2 47. Bh2 Kf2 {[#]} 48. b5 $1 {[%mdl 512]} Ba8 (48... axb5 49. cxb5) 49. bxa6 g1=Q 50. Bxg1+ Kxg1 {KB-KP} 51. c5 {aiming for Ke5.} Kf2 52. Ke5 Kxe3 {KB-K3P} 53. Kd6 {c6 is the strong threat.} Kf2 54. c6 Bxc6 (54... e3 $11 55. c7 e2) 55. Kxc6 {KPP-KP} e3 56. a7 e2 57. a8=Q {White threatens Qf8+ and mate.} e1=Q $16 {( -> ...Qh1+). KQ-KQ} 58. Qf8+ Kg2 59. Qg8+ Kh2 60. Qh7+ Kg2 61. Qg6+ Kh2 62. Qd6+ Kg2 63. a6 (63. Qd5+ $16 Kg3 64. Qd6+ Kh3 65. Qd3+ Kh4 66. a6) 63... Qc3+ 64. Qc5 Qf6+ 65. Qd6 Qc3+ 66. Kd7 (66. Kb5 $5 {[%cal Rd6c6]} Qg7 67. Qc5 $18) 66... Qg7+ 67. Kc8 Qg8+ 68. Kc7 Qf7+ 69. Kc8 Qe8+ 70. Kb7 Qf7+ 71. Qc7 Qb3+ 72. Ka7 Qe3+ 73. Qb6 Qe8 74. Qb7+ Kg1 75. Qd5 Qe7+ 76. Kb6 Qb4+ 77. Kc6 {Intending Qc5+ and mate.} (77. Qb5 $5 {[%cal Rb5b4]} Qd6+ 78. Qc6 Qb4+ 79. Kc7 Qe7+ 80. Qd7 Qc5+ 81. Kb8 Qe5+ 82. Kb7 $18) 77... Qa4+ 78. Kb6 Qb4+ 79. Kc6 (79. Qb5 $5 {[%cal Rb5b4]} Qd6+ 80. Kb7 Qe7+ 81. Ka8 $18) 79... Qa4+ 80. Qb5 Qe4+ 81. Kb6 {Hoping for Qc5+.} Qe6+ 82. Ka7 (82. Ka5 $5 {[%cal Rb5b6]} Qe1+ 83. Kb6 $18) 82... Qe7+ 83. Qb7 (83. Kb6 $5 {[%cal Rb5c5]} Qd8+ 84. Ka7 Qc7+ 85. Qb7 $18) 83... Qe8 84. Qc7 Kg2 85. Kb6 Qe3+ 86. Qc5 Qb3+ 87. Ka5 Qa2+ 88. Kb6 {And now Qc6+ would win.} Qb3+ 89. Kc7 {Strongly threatening Qc6+.} Qf7+ 90. Kc8 Qe6+ 91. Kb7 {Black must now prevent Qc6+.} Qd7+ 92. Kb6 Qd8+ 93. Kb5 Qd3+ 94. Qc4 Qf5+ 95. Kb4 Qb1+ 96. Kc5 {Threatens to win with a7.} Qg1+ (96... Qa1 $11 {keeps the balance.} 97. Qd5+ Kh3 98. Qd7+ Kg3) 97. Kc6 {[%mdl 32768] Precision: White = 65%, Black = 77%. . Sensor Board Error (Ke4/e5)?} (97. Qd4 $16 Qc1+ 98. Kb6 Qh6+ 99. Kb5 Qh5+ 100. Kb4) 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Krysa, Leandro"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2517"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,114,29,26,25,-83,-86,-79,-72,-100,-94,-104,-100,-99,-107,-120,-119,-142,-147,-140,-99,-105,-106,-99,-103,-97,-83,-86,-87,-79,-69,-86,-62,-82,-69,-64,-68,-72,-66,-69,-79,-77,-68,-114,-66,-66,-75,-68,-74,-58,-69,-71,-50,-57,-41,-60,-54,-73,-70,-111,-70,-105,-104,-148,-148,-148,-148,-148,-148,-148,-148,-131,-130,-133,-130,-270,-263,-382,-359,-495,-393,-390,-385,-385,-370,-320,-257,-246,-246,-488,-488,-481,-419,-403,-381,-691,-658]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. Bb3 cxd4 8. exd4 Nc6 9. Bg5 Be7 10. Nc3 O-O 11. Re1 b5 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} 12. Qe2 (12. Bxf6 $11 Bxf6 13. d5) 12... Nxd4 $17 13. Nxd4 Qxd4 {Black is better.} 14. Rad1 Qa7 $1 15. Rd3 $146 ({Predecessor:} 15. Bc2 Bb7 16. Rd7 Nxd7 17. Bxe7 Rfe8 18. Qd3 Nf8 19. Bxf8 Kxf8 20. Qxh7 {0-1 (28) Hendriks,W (2338)-Dreev,A (2685) ICC INT 2001}) 15... Bb7 16. Rg3 Rfe8 17. Qe5 {[#] Bxf6 is the strong threat.} Qb8 $1 18. Qd4 {[#]} Nh5 $1 {[%cal Rh5g3]} 19. Rg4 {Threatens to win with Bxe7.} Qd8 20. Qxd8 Raxd8 21. Bxe7 Rxe7 22. a4 Bc6 23. axb5 axb5 24. Rb4 Rb7 25. Ra1 g5 26. h4 gxh4 27. Rxh4 Nf6 28. Rd1 Rxd1+ 29. Nxd1 Rd7 30. Kf1 Ne4 31. Ke1 Kg7 32. f3 Nc5 33. Bc2 f5 34. Ke2 h6 35. Nc3 Rb7 36. Na2 Bd7 37. b4 Na6 38. Rd4 Nb8 39. f4 Bc6 40. Rd3 Kf6 {aiming for ...Rg7.} 41. Rh3 Bxg2 42. Rxh6+ Kg7 43. Rh2 Bd5 44. Nc3 Rc7 45. Rh3 Na6 46. Rg3+ Kf8 47. Nxd5 (47. Bxf5 $17 {was forced.} Rxc3 48. Rxc3 exf5 49. Ke3) 47... Rxc2+ {[%mdl 4096] Endgame KRN-KRN} 48. Kd3 (48. Kd1 $142 Rc4 49. Ra3) 48... Rc4 $19 49. Rg6 Re4 (49... exd5 $2 50. Rxa6 Ke7 51. Ra5 Rxb4 52. Kc3 Rc4+ 53. Kd2 $19) 50. Nc3 Nxb4+ 51. Kd2 Rd4+ 52. Ke2 Kf7 (52... Rxf4 53. Rxe6 Kf7 54. Rb6 $15) 53. Rh6 Nd5 54. Nxd5 $2 (54. Nxb5 Re4+ 55. Kd2) 54... Rxd5 ({Not} 54... exd5 55. Rh7+ Kf6 56. Rh6+ Kf7 57. Rh7+ Ke6 58. Rh6+ Ke7 59. Ke3 Re4+ 60. Kf3 $19) 55. Rh7+ Ke8 56. Rb7 Rd4 57. Ke3 $2 (57. Rxb5 Rxf4 58. Rb7) 57... Re4+ {Precision: White = 60%, Black = 81%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Real De Azua, Ernesto"]
[Black "Amura, Claudia"]
[Result "1-0"]
[ECO "D33"]
[WhiteElo "2478"]
[BlackElo "2261"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,71,36,46,54,48,59,50,46,79,49,43,39,113,114,144,144,144,142,137,156,191,181,207,199,217,110,107,96,152,155,179,182,308,309,458,457,550,535,595,584,822,627,598,598,598,377,715,370,588,448,439,439]} 1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 c4 7. Bg2 Bb4 8. O-O Nge7 9. e4 O-O 10. exd5 Nxd5 11. Nxd5 Qxd5 12. Be3 {D33: Tarrasch Defence: 6 g3 sidelines} Qb5 (12... Bf5 13. Ne5 Be4 14. Nxc6 Qxc6 15. Bxe4 Qxe4 16. Qa4 Be7 17. Rfc1 h5 18. Qxc4 Rfd8 19. Qb5 Bf6 20. Rc7 Rd5 21. Qxb7 Rad8 22. Rc5 h4 23. Rxd5 Rxd5 24. Rc1 Kh7 25. Qc6 Bxd4 26. Bxd4 h3 {½-½ (26) Korotylev,A (2607)-Chadaev,N (2471) Moscow 2008}) 13. d5 {Strongly threatening a4.} Ne7 14. Ne5 $146 {White is slightly better.} ({Predecessor:} 14. Nd4 Qa6 15. Qe2 Bf5 16. Nxf5 Nxf5 17. Rfc1 b5 18. a4 Nxe3 19. Qxe3 bxa4 {½-½ (41) Zaiatz,E (2290)-Sosnowska,E (2040) Warsaw 1999}) 14... Ng6 15. Qd4 Nxe5 16. Qxe5 Re8 (16... Bd7 $1 $14) 17. a4 $36 {[%cal Ba2a4,Ba4b5,Bb5b6][%mdl 2080] White is in control.} Rxe5 18. axb5 Bd7 19. b6 (19. Rxa7 $6 Rxa7 20. Bxa7 Bxb5 $14) 19... a5 {[#]} 20. d6 $1 {[%mdl 512]} Rb8 {[#]} (20... Bxd6 21. Rfd1) 21. Rfc1 $1 Bb5 {[#]} ({Of course not} 21... Bxd6 22. Rd1 $18 (22. Rxc4 Bb5 $16)) 22. d7 $1 {[%mdl 512]} Re7 (22... Bxd7 23. Bf4) 23. Bxb7 (23. Bf4 $18 Rd8 24. Bxb7) 23... Rxd7 24. Bf3 Ba6 (24... g6 $142) 25. Rd1 Rd3 26. Be4 Rb3 (26... Rxe3 $142 27. fxe3 g6) 27. Rd7 $18 c3 (27... g5 $142 28. Bd5 (28. Bxg5 Rxb6 29. Rd8+ Kg7 $18) 28... Rd3 29. Bxf7+ Kg7) 28. bxc3 Bxc3 29. Rad1 {White wants to mate with Rd8+.} g5 30. Bd5 R3xb6 31. Bxf7+ Kh8 32. Bxb6 Rxb6 33. Rc7 Bf6 $2 (33... Be5) 34. Bc4 a4 (34... Bxc4 $142 35. Rxc4 Kg8) 35. Rdd7 {[%csl Gc7][%cal Rd7h7]} Bxc4 36. Rxc4 {Precision: White = 83%, Black = 37%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Salinas Herrera, Pablo"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "2453"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "150"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,150,30,44,47,55,23,29,19,35,18,14,8,30,0,15,5,5,0,0,-5,16,4,8,-12,15,-25,-1,-21,-41,-36,-33,-59,-24,-28,-15,-66,-62,-183,-163,-185,-76,-84,-66,-129,-119,-260,-193,-193,-201,-199,-202,-227,-172,-183,-111,-114,-122,-254,-7,-274,-272,-290,-282,-266,-158,-215,-228,-302,-302,-308,-260,-343,-327,-542,-377,-382,-373,-386,-386,-378,-375,-391,-387,-366,-371,-438,-377,-437,-422,-537,-405,-602,-587,-652,-632,-781,-761,-818,-803,-918,-569,-587,-564,-591,-591,-653,-647,-685,-657,-639,-568,-894,-872,-988,-915,-1279,-795,-2022,-1274,-1372,-1164,-1037,-869,-5110,-5363,-29976,-29972,-29987,-29988,-29988,-29989,-29990,-29991,-29991,-29990,-29990,-29991,-29991,-29990,-29991,-29991,-29991,-29992]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 5. e4 d6 6. Bxc4 {A57: Benko/Volga Gambit} g6 7. Ne2 (7. Nc3 Bg7 8. Nf3 Nbd7 9. h3 O-O 10. O-O Rb8 11. Re1 Nh5 12. Be2 Ne5 13. Nxe5 Bxe5 14. Bxh5 gxh5 15. Bh6 Re8 16. Qd2 Kh8 17. Bf4 Bd4 18. Be3 {0-1 (63) Dreev,A (2644)-Perunovic,M (2622) Berlin 2015}) 7... Bg7 8. O-O {White has an edge.} O-O 9. Nec3 $146 ({Predecessor:} 9. Bd2 Nbd7 10. Ng3 Rb8 11. Na3 Qb6 12. Bc3 Ne5 13. f4 Nxc4 14. Nxc4 {1-0 (30) Gretarsson,H (2320)-Edvardsson,K (2255) Reykjavik 2009}) 9... Nbd7 10. Be2 Ne8 11. Be3 Nc7 12. Nd2 Ba6 {aiming for ...Bxc3.} 13. Bxa6 Nxa6 14. a3 Nb6 15. Rad1 Qd7 16. f4 Nc7 17. Nf3 Nb5 18. Nb1 Rac8 19. Qe2 a6 20. Kh1 e6 21. dxe6 Qxe6 22. Ng5 (22. e5 $11) 22... Qe7 {Strongly threatening ...h6.} 23. a4 (23. Qc2 $15) 23... Nxa4 $19 {Threatens to win with ...h6.} 24. e5 Nb6 (24... dxe5 $19 25. fxe5 Bxe5) 25. b4 $17 Nd7 {[%cal Bb6d7,Bd7c5,Bc5b3][%mdl 32]} ({But not} 25... dxe5 $6 26. Bxc5 Rxc5 27. bxc5 Qxc5 28. fxe5 $11) 26. Qa2 (26. Qd2 $15) 26... dxe5 27. f5 (27. Qxa6 $17 Rb8 28. bxc5) 27... Nd4 28. fxg6 hxg6 29. bxc5 Nf5 ({Much less strong is} 29... Nxc5 30. Nc3) 30. Bc1 Nxc5 {Hoping for ...e4.} 31. Nc3 Rfd8 (31... Ne6 $1 $19 32. Nxe6 Qxe6 33. Qxe6 fxe6) 32. Nd5 Qb7 33. Ba3 (33. Nxf7 $17 Rxd5 34. Nd6 Nxd6 35. Rxd5) 33... Rd7 $2 {[#]} (33... Nb3 $19 34. Nc3 Rxd1 35. Rxd1 a5) 34. Rd2 $2 {[%mdl 8192]} (34. Nb6 $1 $11 {[%mdl 512] and White has nothing to worry.} Rxd1 (34... Qxb6 35. Rxd7) 35. Rxd1 Qxb6 36. Qxf7+ Kh8 37. Bxc5) 34... Qb3 $19 35. Qxb3 Nxb3 36. Rd3 {[#]} Rcd8 (36... Rxd5 $1 $19 37. Rxb3 (37. Rxd5 Ne3) 37... f6) 37. Rfd1 (37. Rxb3 $17 Rxd5 38. g4) 37... Nbd4 38. Nb4 Rc8 39. Nxa6 Ra7 40. Nb4 Bf8 41. Rh3 $2 (41. g4 {was the only defense.} Nh6 42. h3) 41... Rxa3 42. Rxa3 Bxb4 43. Ra7 Be7 44. Ne4 Rc2 45. Rb1 Kg7 46. Rab7 Nc6 47. Rc7 Nd6 48. Nxd6 Bxd6 49. Rd7 Be7 50. h3 (50. Rc7 $142) 50... Kf6 51. Rc7 Ke6 52. Kg1 e4 53. Kf1 f5 54. Rcb7 Ne5 55. R7b2 Rc4 56. Rb6+ Nc6 57. R6b5 Bc5 58. Rb7 Bd4 59. Rd1 Ne5 60. Rb8 Nd3 61. Re8+ Kf6 62. Rd8 Bc5 63. Ra1 Kg5 64. Rda8 Kf4 65. R8a2 Nb4 66. g3+ Kf3 67. Ra3+ e3 {Black mates.} 68. Kg1 Nc2 69. Rf1+ Kxg3 70. Rd3 f4 {[%cal Bf5f4,Bf4f3][%mdl 32]} 71. Kh1 f3 72. Rg1+ Kf2 73. Kh2 Ke2 74. Rgd1 Rd4 75. Rxd4 Bxd4 {Precision: White = 30%, Black = 76%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.05"]
[Round "6"]
[White "Restuccia, Francisco"]
[Black "Sosa, Tomas"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "2118"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,42,3,8,4,2,4,0,6,8,17,-19,-14,-18,0,-8,-6,0,-3,0,17,-6,-10,-3,-7,-8,-64,-87,-99,-275,-294,-321,-335,-428,-356]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 d6 4. Bxc6+ bxc6 5. d3 {B23: Closed Sicilian: Lines without g3} (5. f4 g6 6. Nf3 Bg7 7. d3 Nf6 8. O-O O-O 9. Qe1 Nd7 10. Kh1 e5 11. f5 gxf5 12. Nh4 f4 13. g3 c4 14. Nf5 cxd3 15. gxf4 Nc5 16. Nxg7 Kxg7 17. b4 Nd7 18. cxd3 {½-½ (50) Rapport,R (2717)-Tan,Z (2496) Danzhou 2016}) 5... e5 6. Nge2 {LiveBook: 6 Games} Be7 7. O-O {The position is equal.} Nf6 8. Kh1 d5 $146 ({Predecessor:} 8... O-O 9. b3 Nh5 10. Rb1 f5 11. f4 fxe4 12. Nxe4 d5 {0-1 (21) Jeenbekov,N-Abdullaev,M Artek 2000}) 9. Ng3 h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 10. h3 h4 11. Nge2 c4 12. d4 Nxe4 13. Nxe4 dxe4 14. dxe5 Qd5 15. Bd2 Qxe5 16. Bc3 $36 {[%mdl 2048] White fights for an advantage.} Qh5 17. Qd4 ({Don't capture} 17. Bxg7 $2 Rg8 18. Qd4 Qxe2 $19) 17... Qxe2 18. Rae1 Qxc2 {[#] ...Be6 is the strong threat.} 19. Qxg7 $2 (19. Qxc4 $17 {only move.} O-O 20. Re2) 19... Rf8 $19 20. Qe5 Be6 21. Rxe4 O-O-O {Precision: White = 64%, Black = 67%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "Mareco, Sandro"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2655"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "26"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,26,48,75,60,54,37,45,26,35,24,24]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. a3 Be7 6. e4 d6 {E11: Bogo-Indian} 7. Be2 c5 8. d5 Nbd7 9. O-O e5 {LiveBook: 4 Games} 10. g3 $146 ({Predecessor:} 10. Ne1 Ne8 11. Nd3 g6 12. b4 b6 13. a4 a5 14. bxa5 bxa5 {½-½ (71) Ding,L (2753)-Leitao,R (2616) Baku 2016}) 10... Ne8 11. Ne1 g6 12. Ng2 Ng7 13. Nb1 f5 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "Peralta, Fernando"]
[Black "Cuberli, Emiliano"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2565"]
[BlackElo "2162"]
[Annotator "TA"]
[PlyCount "176"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,176,26,9,12,6,3,8,9,0,4,0,0,0,0,0,0,0,40,37,47,31,33,39,22,19,13,29,14,14,27,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,6,0,13,0,37,6,114,32,32,32,128,129,109,115,149,75,133,54,49,0,0,0,0,0,0,0,14,14,14,19,12789,6643,7762,4133,6616,5680,5680,5073,1293,0,95,0,1224,95,95,95,95,66,57,8,8,8,8,8,8,8,95,95,95,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. Nf3 Nf6 2. c4 e6 3. e3 d5 4. Nc3 dxc4 5. Bxc4 a6 6. a4 c5 7. O-O Be7 8. d4 Nc6 9. dxc5 Qxd1 10. Rxd1 Bxc5 11. h3 Bb4 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} 12. Na2 {[%cal Bc3a2,Ba2c1,Bc1b3,Bb3d4][%mdl 32]} (12. Bd2 {is more complex.} O-O 13. Na2 Be7 14. Bc3 Ne4 15. Be2) 12... Be7 13. Bd2 (13. Nc3 b6 14. e4 Bb7 15. Be3 Nb4 16. Bxb6 Nxe4 17. Ne5 {½-½ (51) Kazhgaleyev,M (2637)-Jakovenko,D (2725) France 2010}) 13... O-O $146 ({Predecessor:} 13... Ne4 14. Be1 Bd7 15. b4 Nd6 16. Be2 b5 17. axb5 axb5 18. Nc3 Rb8 19. Nd4 Nxd4 20. Rxd4 Nf5 21. Rdd1 Bxb4 22. Ra7 Bc6 23. Rc7 Ne7 24. Nxb5 Bxe1 {½-½ (24) Maric,A (2443)-Skripchenko,A (2450) New Delhi 2000}) 14. Nc1 b6 15. Nb3 Bb7 16. Be1 Rfc8 17. Rac1 Nb4 18. Ne5 Be4 19. Nd4 Bd5 20. Bxb4 Bxb4 21. Bxd5 Nxd5 22. e4 Nf6 23. Ndc6 Bf8 $1 24. f3 Rc7 25. b4 b5 26. axb5 axb5 27. Ra1 Rxa1 28. Rxa1 Nd7 29. Nxd7 Rxd7 $11 {[%mdl 4096] Endgame KRB-KRN} 30. Ra8 Rc7 31. Ra6 (31. Ne5 {is interesting.} f6 32. Nd3 Kf7 33. Rb8 Rc3 34. Rb7+) 31... g6 32. Rb6 Kg7 33. Kf2 h5 34. g4 h4 35. g5 Rd7 (35... e5 $11) 36. Rxb5 (36. Ke2 $1 $16) 36... Rd2+ $1 $14 37. Ke3 Rh2 (37... Rc2 $14 38. Rb6 Rc3+ 39. Kf4 Bd6+ 40. e5 Rc4+ 41. Ke3 Bf8) 38. Rb7 $16 Rxh3 39. Ne5 Rh1 40. Nxf7 ({Better is} 40. Rxf7+ Kg8 41. Rf6) 40... h3 (40... Rb1 $142) 41. Ne5+ (41. Kf2 $1 $16) 41... Kg8 $14 42. Ng4 {White threatens Nf6+ and mate.} Bd6 43. Nf2 Re1+ 44. Kd2 Rb1 45. Nxh3 Rxb4 46. Rxb4 Bxb4+ $11 {KB-KN} 47. Ke2 e5 $2 {[%mdl 8192]} (47... Bd6 $11) 48. Kd3 $1 $18 {[%cal Rd3c4]} Kf7 49. Kc4 $1 {[%cal Rc4b4]} Bd2 50. Kd5 Bc3 {[#]} 51. Nf2 $1 {[%cal Rf2d3]} Bd2 52. Nh3 $2 (52. Kxe5 $18 {Hoping for f4.} Bxg5 53. Kd6) 52... Bc3 $16 53. Nf2 $2 {[%mdl 8192]} (53. Ng1 $16) 53... Bd2 $1 $18 54. Ng4 $2 (54. Kxe5 $18 {is the precise move to win.} Bxg5 55. Kd6 Bf4+ 56. e5) 54... Bxg5 $16 55. Nxe5+ Kf6 56. Nc6 {Strongly threatening e5+.} Bd2 57. e5+ Kf5 $1 58. Ne7+ Kf4 59. e6 (59. Nxg6+ $5 Kxf3 60. e6 $11) 59... Kxf3 60. Nxg6 Bb4 {[#]} (60... Bg5 $11 {remains equal.}) 61. Ne5+ $1 Kg3 62. Kc6 (62. Ke4 $16) 62... Be7 {The position is equal.} 63. Kd7 Bg5 64. Ke8 Kf4 65. Nc6 Ke4 66. Kf7 Kd5 67. Ne7+ Ke5 68. Ng8 Bd8 69. Nh6 Bg5 70. Ng4+ Kf5 $1 71. Ne3+ Ke5 72. Nc4+ Kd5 73. Nd2 Bd8 74. Nf3 Kd6 75. Nd4 Kd5 76. Nf5 Ke5 77. Ng7 Bh4 78. Kf8 Bf6 79. Kg8 Bg5 80. Kf7 Bh4 81. Ne8 Bd8 82. Nc7 Bh4 83. Nb5 Bd8 84. Na3 $1 Kd5 85. Nc2 $1 Kd6 86. Ne3 Bg5 87. Ng4 {Black must now prevent Nf6.} Bd8 88. Nf6 Ke5 {Precision: White = 77%, Black = 71%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "Valerga, Diego"]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2460"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,81,24,25,18,23,0,27,16,35,23,33,29,47,40,46,37,57,37,37,33,35,36,222,246,227,213,200,190,171,189,170,156,394,379,398,392,380,375,496,495,652,654,765,695,677,670,617,648,670,630,1066,1045,29975,29976,29976,29977,29983,29984,29984,29985]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nc6 8. Be3 Bd7 9. a4 Be7 10. f4 Nxd4 11. Qxd4 Bc6 12. Bf3 O-O {LiveBook: 12 Games} 13. Rfd1 {B84: Sicilian Scheveningen: 6 Be2 a6, lines without early Be3} Qc7 {[#]} 14. Qb6 $146 ({Predecessor:} 14. a5 Rac8 15. Qd2 Rfe8 16. Kh1 h6 17. Qf2 Nd7 18. Ne2 Nc5 19. Ng3 Bh4 20. e5 Bxf3 21. Qxf3 {0-1 (52) Stefansson,H (2545)-Hansen,C (2600) Reykjavik 1997}) 14... Qb8 15. a5 {[%cal Ba4a5,Ba5b6][%mdl 32] White has an edge.} Re8 16. Qb3 Nd7 17. Na4 Bd8 18. Nb6 $36 {[%mdl 2048] White has the initiative.} Nxb6 19. axb6 Be7 20. Bf2 a5 21. c4 a4 22. Qd3 Ra6 $2 {[#]} (22... Qc8 $14) 23. b4 $1 $18 {[%cal Rb4b5]} axb3 24. Rxa6 ({Worse is} 24. Qxb3 Rxa1 25. Rxa1 g6 $11) 24... bxa6 25. Qxb3 e5 26. fxe5 dxe5 27. c5 Qb7 $2 (27... Qc8 $16 28. Qc3 Bf6) 28. Be2 Rd8 29. Rxd8+ Bxd8 30. Qd3 Be7 31. Qxa6 Qd7 32. Qa7 {Strongly threatening Qxd7.} Bb7 33. h3 Qc8 34. Bg4 Qc6 35. Qb8+ Bf8 36. Qxe5 h5 37. Bxh5 Qh6 {[#]} 38. Bxf7+ $1 {White mates.} Kxf7 39. Qc7+ Kg8 40. Qxb7 Qc1+ 41. Kh2 {Precision: White = 81%, Black = 51%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "Sosa, Tomas"]
[Black "Slipak, Sergio"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2459"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,124,40,43,-36,71,77,65,69,64,67,69,57,65,70,81,82,80,68,62,56,61,56,93,97,97,79,119,75,76,91,102,99,85,88,95,83,80,64,83,40,64,68,61,47,48,52,52,48,47,52,55,20,14,16,21,0,0,0,0,-8,-8,-8,-8,-8,0,0,0,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,8,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Nc3 Nc6 8. Qf4 g6 9. Be3 Bg7 {C43: Petroff Defence: 3 d4} 10. O-O-O O-O {LiveBook: 7 Games} 11. g4 $146 (11. Bc5 $14) ({Predecessor:} 11. h4 h5 12. Bc5 Be6 13. Bb5 Qf6 14. Qxf6 Bxf6 15. Bxd6 cxd6 16. Ne4 Be7 17. Nxd6 {0-1 (55) Jones,G (2665)-Bu,X (2693) Helsingor 2014}) 11... Qf6 (11... Be6 $15) 12. Qxf6 $16 Bxf6 13. Nd5 Bd8 14. h3 Be6 15. Bg2 Bxd5 16. Rxd5 Bf6 17. c3 Rfe8 18. Re1 Re6 19. Bf4 Rae8 20. Rxe6 fxe6 21. Rd1 e5 22. Be3 Nc4 23. Nd2 Nxe3 24. fxe3 Bg5 25. Bxc6 bxc6 {[%mdl 4096] Endgame KRB-KRN} 26. Nc4 Rf8 27. Rd7 Rf3 28. Rxc7 Rxh3 29. Kd2 Rg3 30. Rxc6 Rxg4 31. Nxe5 Rg2+ 32. Kd3 $1 Rxb2 33. Rc8+ Kg7 34. Rc7+ Kf6 35. Nd7+ (35. Nf3 $5 {[%cal Rc7c6]} Rg2 36. Rxa7 $16) 35... Kf5 $1 {The position is equal.} 36. Rxa7 {Strongly threatening Ra5+.} Be7 37. Ra5+ Ke6 38. Ne5 Bd8 39. Nc4 (39. Ra8 $5 {[%cal Re5c4]} Kxe5 40. Rxd8 $11) 39... Bxa5 40. Nxb2 $11 {KB-KN} h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 41. c4 h4 {[#] Threatens to win with ...h3.} 42. Ke4 h3 43. Kf3 h2 44. Kg2 Bd2 45. Nd1 Kd6 46. Kxh2 Kc5 47. Kg3 Kxc4 48. Kf3 Kb4 49. Ke2 Bc1 50. Kd3 Ka3 51. Nc3 Bb2 52. e4 {[#] Black must now prevent Kc2.} Kb4 53. Nd5+ Ka3 54. Nc3 Kb4 55. Nd5+ (55. Ne2 {feels hotter.} Be5 56. Ke3 g5 57. Nd4 Bf6 58. Ne6) 55... Ka3 56. Ke3 (56. Kc4 $5 {[%cal Rd5c3]}) 56... Kxa2 57. Kf4 Kb3 58. Kg5 Kc4 59. Kxg6 Kc5 60. Kf5 Kd6 61. Ne3 {Threatening mate with Nc4+.} Ke7 62. e5 Bxe5 {Precision: White = 73%, Black = 77%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "Pierrot, Facundo"]
[Black "Real De Azua, Ernesto"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2392"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,82,22,33,16,8,0,5,-25,6,-36,-43,-45,-43,-77,-69,-72,-58,-59,-52,-70,-36,-35,-49,-71,-72,-72,-68,-72,-68,-70,-32,-51,-46,-56,-41,-46,-20,-50,-47,-55,-62,-50,-8,-35,0,-54,0,-41,-33,-37,-28,-36,-27,-50,-19,-71,-52,-53,-51,-61,-62,-62,-62,-63,4]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 g6 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann} exd4 7. cxd4 b5 8. Bb3 Bg7 9. O-O d6 10. h3 O-O {LiveBook: 61 Games} 11. Nc3 (11. Re1 Na5 12. Bc2 c5 13. Nc3 cxd4 14. Nxd4 {0-1 (27) Najer,E (2679)-Grischuk,A (2737) Doha 2016}) 11... Na5 12. Bc2 c5 13. Bf4 {[#]} Nc4 $146 ({Predecessor:} 13... cxd4 14. Nxd4 {0-1 (43) Burrows,M (2136)-Mikhalevski,V (2571) Caleta 2015}) 14. Rb1 cxd4 15. Nxd4 Bb7 16. Nde2 Rc8 17. Bb3 d5 (17... b4 $5 {[%cal Rb4c3]} 18. Na4 Bxe4 $15) 18. exd5 Nxd5 19. Nxd5 Qxd5 (19... Bxd5 {looks sharper.} 20. Nc3 Be6 21. Qe2 Re8 22. Qf3 Qd7) 20. Qxd5 Bxd5 21. Nc3 Be6 22. Rfe1 Rfe8 23. Bxc4 Bxc4 24. a3 a5 25. Rxe8+ Rxe8 26. Bd6 Re6 27. Rd1 Bb3 28. Rd3 Re1+ 29. Kh2 Bc4 30. Rd2 Bh6 31. Rd4 Bg7 (31... Bc1 $5 {[%cal Rc1b2]} 32. b3 Bxb3 33. Nxb5 h5 $15) 32. Rd2 $1 Bh6 33. Rd4 Bc1 34. b3 Bxb3 {[#] aiming for ...Bb2.} 35. Nxb5 Rd1 36. Re4 f5 37. Rd4 (37. Re8+ $11 Kf7 38. Re7+ Kf6 39. Rb7) 37... Rxd4 38. Nxd4 {Black is slightly better.} a4 39. g4 Bb2 40. Bc5 f4 41. g5 Bxd4 {Precision: White = 50%, Black = 68%.} (41... h5 $15) 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.06"]
[Round "7"]
[White "De Dovitiis, Alejo"]
[Black "Krysa, Leandro"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "2327"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,46,22,0,0,0,-9,-38,-40,-43,-61,-100,0,-79,0,2,-4,-240,-224,-224,-193,-457,-462,-447,-445,-528,-463,-484,-476,-1111,-1108]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Bc5 6. e5 Ng4 7. Bxf7+ Kxf7 8. Ng5+ Kg8 9. Qxg4 Nxe5 10. Qe4 d6 {C56: Two Knights: 4 d4 exd4 5 0-0 Nxe4} 11. b4 $146 ({Predecessor:} 11. Qd5+ Kf8 12. f4 Qf6 13. Nd2 Ng4 14. Nde4 Qe7 15. Nxc5 dxc5 16. f5 Nf6 17. Ne6+ Bxe6 18. Qxb7 Bd5 {0-1 (18) Molina Garcia,A (2144)-Constantino Blazquez,C (1848) Parla 2008}) 11... Bb6 $1 {Threatening ...Qf6.} ({Not} 11... Bxb4 $2 12. Qd5+ (12. f4 Nf7 $15) 12... Kf8 13. f4 $18) 12. Qd5+ Kf8 {Black is slightly better.} 13. f4 Qf6 {Threatens to win with ...Ng4.} 14. Nd2 Nf7 ({Black should try} 14... Nc6 $17 15. Kh1 h6) 15. Bb2 {[#]} (15. a4 $11 a6 16. Kh1) 15... Qf5 (15... h6 $1 $17 {[%cal Rh6g5]} 16. Nxf7 (16. Nde4 Qf5 $17) 16... Qxf7) 16. Qb3 $11 h6 $36 {[%mdl 2048] Black has good play.} 17. Nc4 $2 (17. Ngf3 $11) 17... hxg5 $19 18. fxg5 Qg6 {Hoping for ...Be6.} 19. Rxf7+ $2 (19. Rae1 {was worth a try.}) 19... Qxf7 {Black is clearly winning.} 20. Rf1 Bf5 21. g4 d3+ 22. Nxb6 Qxb3 23. Rxf5+ {[#]} (23. axb3 $142 axb6 24. cxd3) 23... Qf7 $1 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Vasquez Schroeder, Rodrigo"]
[Black "Pierrot, Facundo"]
[Result "0-1"]
[ECO "D70"]
[WhiteElo "2554"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,70,38,54,0,25,0,15,0,48,68,72,42,42,-16,43,35,47,27,74,17,58,0,0,0,0,0,0,0,0,0,0,0,0,-35,0,-29,-43,-34,-33,-102,-43,-799,-771,-631,-285,-29990,-29991]} 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 Nc6 9. O-O-O Qd6 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} 10. Nb5 Qd7 11. Kb1 Rd8 12. d5 a6 13. Nc3 Qe8 {LiveBook: 29 Games} 14. Qe1 ({White should play} 14. Qc1 $14 Ne5 15. Nge2) 14... Ne5 {[#]} 15. Bd4 $146 ({Predecessor:} 15. Be2 e6 16. Bxb6 cxb6 17. f4 {1-0 (54) Aronian,L (2825)-Caruana,F (2770) Moscow 2012}) 15... e6 $1 {[%cal Re6d5]} 16. f4 Nec4 {[%cal Re6d5]} 17. Bxg7 Kxg7 18. Bxc4 Nxc4 19. Qf2 ({White should try} 19. Nf3 $14) 19... b5 (19... exd5 $11 20. Qd4+ f6) 20. Nf3 $1 $14 Bb7 21. Rhe1 Qe7 {[#]} 22. Ka1 (22. g4 $1 $16) 22... c5 23. b3 (23. Ne5 $14) 23... Nb6 $1 $11 {White should prevent ...b4.} 24. dxe6 b4 25. Nd5 Bxd5 26. exd5 Nxd5 27. exf7 Qf6+ $1 28. Ne5 {Black must now prevent g3.} Nxf4 29. Qb2 Ne6 30. Rxd8 Rxd8 31. g4 Nd4 {Strongly threatening ...Rd5.} 32. Kb1 ({Better is} 32. Qg2 $1 $15) 32... Nb5 (32... Rd5 $17 33. Nd3 g5) 33. Qg2 $2 {[%mdl 8192] [#]} (33. Ka1 $15 Nc3 34. Qg2) 33... Na3+ $1 $19 ({Not} 33... Nc3+ 34. Ka1 $15) 34. Kb2 c4 (34... Qf4 $142 {( -> ...Qd4+)} 35. Nf3 c4 36. f8=Q+ Kxf8) 35. Re2 $2 (35. f8=B+ $19 Kxf8 36. Qf1 Rd2+ 37. Kc1 Rc2+ 38. Kd1) 35... c3+ {Precision: White = 27%, Black = 39%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Real De Azua, Ernesto"]
[Black "Sosa, Tomas"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2478"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,46,68,51,65,43,57,45,60,30,35,15,6,4,14,6,16,22,20,18,38,39,40,35,35,33,15,24,30,21,46,22,58,64,58,58,65,50,50]} 1. d4 d6 2. Nf3 Nf6 3. c4 Bf5 4. Nc3 h6 5. g3 c6 6. Bg2 Nbd7 {A53: Old Indian Defence without Nf3} 7. O-O (7. d5 {feels hotter.} e5 8. Nh4 Bh7 9. dxc6 bxc6 10. Bxc6 Rc8 11. Bb5) 7... Ne4 $146 ({Predecessor:} 7... g5 8. h4 g4 9. Ne1 Bg7 10. e4 Bg6 11. Be3 O-O 12. Nd3 e5 13. d5 cxd5 14. cxd5 {½-½ (56) Hera,I (2564)-Ivanisevic,I (2638) Hungary 2013}) 8. Qb3 Nxc3 9. Qxc3 e6 10. Nd2 Be7 11. b3 O-O 12. Bb2 Bh7 13. Rad1 a5 14. a3 Bf6 15. Ne4 d5 16. Nxf6+ Nxf6 17. a4 b5 18. axb5 cxb5 19. c5 b4 20. Qd2 a4 21. bxa4 $1 {White is slightly better.} ({But not} 21. Qxb4 Qb8 $11) 21... Rxa4 22. Ra1 Qd7 23. Rxa4 Qxa4 {Precision: White = 79%, Black = 60%.} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Slipak, Sergio"]
[Black "Salinas Herrera, Pablo"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2465"]
[BlackElo "2453"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,9,17,6,5,4,14,0,0,4,8,0,0,-15,-2,-10,-10,-12,-6,-10,-16,-4,0,-4,6,0,0,-10,0,0,0,-18,0,-31,-25,-42,-43,-38,-39,-75,-9,-44,-23,-32,-24,-18,-19,-19,-23,-31,-3,-15,-21,-9,24,-31,-8,-3,-10,-113,-113,-237,-258,-224,-118,-132,-151,-148,-127,-143,-142,-213,-213,-232,-218,-229,-232,-220,-214,-278,-277,-327,-259,-266,-193,-193,-184,-381,-365,-466,-434,-860,-602,-1469,-1443,-1400,-2694,-2005,-1947,-29991,-12847,-29977,-29978]} 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nbd7 (4... g6 5. Bd3 Bg7 6. Bc2 e5 7. d4 cxd4 8. cxd4 exd4 9. Nxd4 O-O 10. O-O Nc6 11. Be3 Re8 12. Nc3 d5 13. exd5 Nxd5 14. Nxd5 Nxd4 15. Bxd4 Qxd5 16. Bxg7 Qxd1 17. Rfxd1 Kxg7 {½-½ (25) Andreikin,D (2736)-Artemiev,V (2663) Sochi 2016}) 5. d3 b6 6. g3 $146 {B50: Sicilian: 2...d6, Miscellaneous} ({Predecessor:} 6. Be3 e6 7. Nbd2 Be7 8. d4 cxd4 9. cxd4 Bb7 10. Bd3 O-O 11. O-O d5 12. e5 {1-0 (36) Rathnakaran,K (2398)-Kiran,M (2243) Bhubaneswar 2014}) 6... Bb7 7. Bg2 c4 8. dxc4 {The position is equal.} Bxe4 9. O-O e6 10. Bf4 Qc7 11. Na3 a6 $1 12. Re1 Bb7 13. Nd4 Bxg2 14. Kxg2 Ne5 15. Qa4+ Qd7 16. Qxd7+ Nfxd7 17. Rad1 Rc8 18. b3 Be7 19. Nac2 g5 20. Bc1 Nc5 21. Re2 h5 22. Nf3 Nxf3 23. Kxf3 f5 24. Be3 Kf7 (24... Ne4 $17 25. Bd4 (25. Bxb6 Nxc3 26. Bd4 Nxd1 $17) 25... g4+ 26. hxg4 hxg4+ 27. Kg2 Rh5) 25. Rde1 {next Bxc5 is good for White.} Rh6 26. h4 Rg6 27. hxg5 Bxg5 28. Rh1 Rh8 29. Bd4 Rh7 (29... e5 $5 {[%cal Re5d4]} 30. Bxc5 e4+ 31. Kg2 dxc5 $15) 30. Bxc5 bxc5 31. b4 Bf6 32. Re3 (32. Rd2 $11) 32... Rg4 {Strongly threatening ...cxb4.} 33. Rd1 Be7 {With the idea ...cxb4.} 34. Na3 (34. Red3 $11 {keeps the balance.}) 34... h4 $17 35. b5 (35. gxh4 $17 Rhxh4 36. b5) 35... hxg3 $19 36. fxg3 Rh3 (36... e5 $19 37. Kg2 f4) 37. Kg2 $17 Rh8 38. bxa6 {[#]} Ra8 $1 $36 {[%mdl 2048] Keeping White busy.} 39. Nb5 Rxa6 40. Re2 (40. a4 $17 {keeps fighting.}) 40... Rxc4 $19 41. Rde1 {[#]} Re4 $1 {[%mdl 512]} 42. Rxe4 fxe4 43. Rxe4 Rxa2+ {[%mdl 4096] Endgame KRB-KRN} 44. Kf3 {[#]} d5 $1 {[%cal Rd5e4,Bd6d5,Bd5d4,Bd4d3,Bd3d2][%mdl 32]} 45. Re1 Rc2 46. Kg4 Rf2 47. c4 d4 48. Re4 $2 (48. Nc7) 48... Rc2 49. Kf4 Rxc4 50. Ke5 (50. Re1 $142) 50... Bf6+ 51. Kd6 {[#]} d3 $1 {[%mdl 512]} 52. Re3 d2 53. Rd3 Bg5 54. Ke5 Rc1 (54... Ke7 $142 55. Nd4 Rxd4 56. Rxd4 cxd4 57. Kxd4 Kd6 58. g4 d1=Q+ 59. Kc3 Qd2+ 60. Kb3 Kc5 61. Ka3 Kc4 62. Ka4 Qb4#) 55. Nd6+ Kg6 {Precision: White = 33%, Black = 69%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Valenzuela Fuentealba, Luis"]
[Black "Krysa, Leandro"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "2460"]
[BlackElo "2517"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,70,0,0,14,12,14,22,-15,3,-9,-13,-12,-5,-6,-20,-3,0,-9,-6,-87,-88,-180,-179,-198,-200,-706,-687,-656,-620,-871,-857,-903,-809,-817,-756,-739,-730,-997,-723,-1396,-1281,-1550,-1522,-1460,-1055,-1563,-1118,-1295,-1255,-1343,-1332,-1850,-1222,-1169,-697]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d5 5. c4 dxc4 6. Na3 c3 7. bxc3 c5 8. O-O O-O 9. Qb3 Nc6 {LiveBook: 74 Games. D77: Fianchetto Grünfeld: 6 0-0: Replies other than 6...c6} (9... Be6 10. Qxb7 Bd5 11. Qb2 Nc6 12. Bf4 Nh5 13. Nc2 Nxf4 14. gxf4 Rb8 15. Qa3 cxd4 16. Ncxd4 Nxd4 17. cxd4 Bxf3 18. Bxf3 Qxd4 19. e3 Qb4 {½-½ (19) Karpov,A (2619)-Bacrot,E (2730) Cap d'Agde 2013}) 10. Rd1 cxd4 11. cxd4 Be6 {The position is equal.} 12. Qb2 $146 ({Predecessor:} 12. Qxb7 Bd5 13. Qa6 Nb4 14. Qa4 Nxa2 15. Bd2 Ne4 16. Ba5 Nac3 17. Bxd8 Nxa4 {½-½ (33) Kuljasevic,D (2528)-Esserman,M (2425) Lubbock 2011}) 12... Bd5 13. Nb5 Ne4 14. Bf4 Rc8 15. Ne5 a6 $36 {[%mdl 2048] Black is more active.} 16. Bxe4 Bxe4 17. Nc3 Bf5 18. Qxb7 (18. e4 $11 Be6 19. Nxc6 Rxc6 20. Be5) 18... Nxd4 $17 19. Nd5 (19. Qb4 $17 {might work better.} a5 20. Qxd4 Qxd4 21. Rxd4 Rxc3 22. Rd5) 19... Nxe2+ $19 20. Kf1 Nxf4 21. Nf6+ $2 {[#]} (21. gxf4 Re8 22. Nf6+ Bxf6 23. Rxd8 Rexd8 24. a3) 21... exf6 {Black is clearly winning.} 22. Rxd8 Rcxd8 23. Nc6 Rd7 24. Qb6 Bd3+ 25. Kg1 Ne2+ 26. Kg2 f5 27. Rh1 Rc8 28. f3 Bb5 29. Nb4 Bd4 30. Qa5 Rc5 31. Qa3 Rc4 32. Re1 Re7 33. Nd3 Re6 34. Qa5 Bc3 35. Qd8+ Re8 {Precision: White = 33%, Black = 84%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Valerga, Diego"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2460"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,78,0,27,18,16,6,12,0,16,0,9,14,10,9,0,-28,-28,-52,-40,-52,-49,-52,-16,-72,-91,-79,-67,-89,-88,-89,-82,-99,-72,-138,-72,-129,-118,-121,-124,-203,-137,-136,-120,-266,-254,-268,-253,-244,-225,-232,-112,-604,-571,-570,-543,-767,-533,-2147,-718,-29992,-29993]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Bf3 {B92: Sicilian Najdorf: 6 Be2} (9. Kh1 b6 10. f3 Bb7 11. a4 Nc6 12. Bg5 Nb4 13. Nb1 h6 14. Bxf6 Bxf6 15. Na3 Qc7 16. c3 Nc6 17. Nc4 Rfd8 18. Qd3 Ne7 19. Qe3 {½-½ (39) Ivanchuk,V (2747)-Vachier Lagrave,M (2804) Doha 2016}) 9... Be6 10. Re1 Nbd7 {LiveBook: 200 Games} 11. a4 {[%cal Ba2a4,Ba4a5][%mdl 32] White has an edge.} Qb8 12. a5 Rc8 13. Bd2 $146 ({Predecessor:} 13. Be3 Bd8 14. Be2 Rc6 15. Bd3 b5 16. axb6 Bxb6 17. Bxb6 Rxb6 {0-1 (61) Kosteniuk,A (2554)-Ushenina,A (2450) Huaian 2016}) 13... Qc7 14. Nc1 h6 15. Nd3 b6 16. axb6 Nxb6 17. Nb4 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 18. Nbd5 Nfxd5 19. Nxd5 Nxd5 20. exd5 Bd7 21. Bc3 (21. Be2 $11) 21... a4 $17 22. Ra3 Qc5 23. g3 Bd8 24. Qd2 Bb6 25. b4 Qc7 26. Bd1 (26. Rc1 $142) 26... Bb5 (26... f5 $142 27. Qe2 Qc4 28. Qxc4 Rxc4) 27. Bb2 (27. Be2 $142 Bxe2 28. Rxe2) 27... Qd7 28. c3 f5 29. Be2 {[#]} (29. Qc2 $17) 29... f4 $1 {[%mdl 512]} 30. Bxb5 (30. gxf4 Rf8) 30... Qxb5 31. gxf4 {[#]} (31. Kg2 $17) 31... Rc4 $1 $19 {[%cal Rc4f4]} 32. Qe2 ({Wrong is} 32. fxe5 $2 Rg4+ 33. Kh1 {[#]} Bxf2 $1 $19 {[%mdl 512]}) 32... Rf8 ({Resist} 32... Qxd5 33. Bc1 $19) 33. Bc1 Qxd5 {And now ...Rf6 would win.} 34. Rd1 Qe6 (34... Qc6 $19 {is more deadly. ...Rf6 is the strong threat.} 35. Qd3 exf4 36. Qd5+ Qxd5 37. Rxd5 f3) 35. Rxd6 $2 {[%mdl 8192]} (35. Kh1 $17) 35... Qxd6 36. Qxc4+ Kh8 37. Qf1 exf4 38. Ra2 f3 (38... Rf6 $142 39. Qe2 Rg6+ 40. Kf1 Qc6) 39. Be3 Bc7 {Precision: White = 28%, Black = 84%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.07"]
[Round "8"]
[White "Heinechen, Juan"]
[Black "Peralta, Fernando"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1988"]
[BlackElo "2565"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,108,68,74,62,43,91,31,103,85,79,76,56,53,62,42,81,91,73,68,60,56,56,53,62,14,48,43,57,32,37,24,20,28,14,-7,0,-29,-20,-19,-13,-55,-60,-52,-52,-115,-120,-537,-535,-527,-529,-558,-546,-972,-929,-1072,-1053,-1632,-788,-968,-573,-918,-725,-685,-573,-573,-573,-546,-489,-558,-493,-587,-563,-563,-558,-652,-637,-761,-758,-1035,-1022,-984,-979,-1527,-1499,-1437,-1419,-1377,-1250,-6154,-6045,-6049,-5679,-29976,-29978]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. Qd2 h6 6. Bf4 g5 {B07: Pirc Defence: Miscellaneous Systems} 7. Be3 Ng4 8. h4 Nxe3 9. Qxe3 {LiveBook: 3 Games} g4 10. O-O-O e6 $146 ({Predecessor:} 10... Nc6 11. Nge2 h5 12. Kb1 e6 13. f4 gxf3 14. gxf3 {1-0 (33) Kovalev,V (2598)-Carrasco Martinez,J (2352) Lisbon 2017}) 11. f4 (11. Kb1 $16) 11... gxf3 (11... O-O $14) 12. Nxf3 Qe7 13. Kb1 Nd7 14. g4 a6 15. Ne2 {[%cal Bc3e2,Be2g3,Bg3h5][%mdl 32]} Nb6 16. Ng3 Bd7 17. Nh5 Bf8 18. Rg1 O-O-O 19. Bd3 Kb8 20. c4 e5 21. d5 Bc8 22. Qf2 Rg8 {[%cal Bh8g8,Bg8g6,Bg6f6,Bf6f4][%mdl 32]} 23. Nh2 Bg7 24. Rdf1 Rdf8 25. Be2 Bh8 26. a3 Nd7 27. b4 Rg6 28. Qg3 Nf6 29. Nxf6 Rxf6 ({Don't play} 29... Bxf6 30. g5 $11) 30. g5 ({White should try} 30. Rxf6 $15 Bxf6 31. Nf3) 30... Rf4 $1 $17 {[%cal Rf4e4]} 31. Rxf4 $4 {[%mdl 8192] [#]} (31. Qe3 $17 {is a better chance.}) 31... exf4 $19 32. Qxf4 Be5 33. Qf2 Bxh2 34. Qxh2 Qxe4+ 35. Kb2 Qd4+ 36. Kb3 Re8 (36... Qe3+ $142 37. Kc2 Bf5+ 38. Kd1 Re8) 37. Rg3 hxg5 38. hxg5 Qd2 39. Rd3 Qxe2 40. Qxe2 Rxe2 {[%mdl 4096] Endgame KRB-KR} 41. Rf3 Re7 42. Rf6 Bg4 43. g6 fxg6 44. Rxg6 Bf3 45. Rg8+ Ka7 46. Rd8 b5 47. c5 Bxd5+ 48. Kc3 Re6 49. cxd6 Rxd6 50. Rc8 Kb7 51. Rh8 Bc4 52. Rh7 Rd3+ 53. Kb2 Rb3+ 54. Kc2 Bd3+ {Precision: White = 35%, Black = 81%.} 0-1

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "Mareco, Sandro"]
[Black "Pierrot, Facundo"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2655"]
[BlackElo "2392"]
[Annotator "TA"]
[PlyCount "29"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,17,16,22]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. a3 Be7 7. e4 O-O {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6} 8. Nf3 (8. Be2 d5 9. exd5 exd5 10. O-O Nxd4 11. Qxd4 dxc4 12. Qxd8 Rxd8 13. Bxc4 Bf5 14. Re1 Kf8 15. h3 Rac8 16. Ba2 Bc5 17. Bb1 Bxb1 18. Rxb1 {0-1 (48) Edouard,R (2626)-Vachier Lagrave,M (2803) chess.com INT 2017}) 8... Qa5 9. Bd3 {LiveBook: 9 Games} {Predecessor:} d5 $146 10. exd5 exd5 11. cxd5 Nxd5 12. Bxh7+ Kxh7 13. Qxd5 Qa6 14. Qb5 Qxb5 15. Nxb5 {1-0 (81) Malakhov,V (2699)-Landa,K (2627) Kaliningrad 2015} 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "Peralta, Fernando"]
[Black "Bitelmajer, Martin"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2565"]
[BlackElo "2440"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,91,48,44,49,45,53,50,44,50,67,48,92,54,85,21,77,25,43,18,73,58,82,82,86,64,94,93,104,103,107,98,113,103,182,177,212,207,201,208,193,197,207,224,216,239,246,233,227,218,305,283,301,300,285,290,314,237,234,247,450,452,433,471,458,445,443,432,970,992,902,724,1052,573,6153,6091]} 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. Nge2 Bg7 8. Ng3 O-O 9. Be2 a6 10. a4 Re8 {A65: Modern Benoni: 6 e4} 11. O-O Nbd7 12. h3 h5 {White is slightly better.} 13. Bg5 Qa5 14. Re1 $1 Rb8 15. Qc2 {[#]} Qc7 $146 ({Predecessor:} 15... Nh7 16. Bf4 Qc7 17. Nf1 Bd4 18. Be3 Qd8 19. Rad1 {1-0 (33) Grachev,B (2667)-Kovacevic,A (2574) Rijeka 2010}) 16. b3 (16. Nf1 $16) 16... Nf8 (16... Nh7 $11 {remains equal.} 17. Be3 Qd8) 17. Bc4 (17. Be3 $16) 17... N8h7 18. Bd2 {[%cal Bg5d2,Bd2f4,Bf4h2][%mdl 32]} h4 (18... Nd7 $11) 19. Nf1 $16 {[%cal Bg3f1,Bf1d2,Bd2c4][%mdl 32]} Nh5 20. Be2 $36 {[%mdl 2048] White has strong initiative.} N5f6 21. Bf4 Bd7 22. a5 g5 {[#]} 23. Bh2 $1 Nf8 24. Nd2 {Black must now prevent Nc4.} Ng6 25. Nc4 Bf8 (25... Nf4 $16 {might work better.}) 26. Bf3 $18 Bb5 {[#]} 27. e5 $1 {[%mdl 512]} dxe5 28. Qf5 Bxc4 29. bxc4 Bg7 30. Qxg5 b5 31. axb6 Rxb6 32. Rad1 Nh7 33. Qf5 Rf6 34. Qd3 Ng5 35. Bg4 Qd6 36. Bf5 Re7 37. Ne4 Nxe4 38. Qxe4 Qd8 $2 (38... Rb7 39. Bxg6 (39. Bxe5 Nxe5 40. Qxe5 Qxe5 $18) 39... Rxg6 40. Bxe5 Bxe5) 39. Bxg6 {White is clearly winning.} Rxg6 40. f4 {[%cal Bf2f4,Bf4e5][%mdl 32]} Rb7 41. fxe5 Rb2 42. Re2 Qb6 (42... Rxe2 $142 43. Qxe2 Qe7) 43. Rxb2 Qxb2 44. d6 {d7 is the strong threat.} Qb3 45. Qd3 Qb7 {[%csl Gg6][%cal Rb7g2] [#]} 46. Qxg6 $1 {[%mdl 512] Precision: White = 74%, Black = 39%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "Krysa, Leandro"]
[Black "Salinas Herrera, Pablo"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2517"]
[BlackElo "2453"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,83,12,34,23,18,0,19,12,22,4,17,-3,-11,-7,0,0,0,0,7,12,5,4,4,14,27,10,83,79,79,49,74,29,135,137,144,115,220,197,218,192,262,258,260,270,256,265,256,133,133,133,135,135,137,137,180,180,626,626,621,594,1311,1238,832,847,1597,1577]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 e5 8. dxe5 dxe5 9. Bg5 Be6 10. Qa4 Qb8 {LiveBook: 9 Games. E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} 11. Bxf6 $146 ({Predecessor:} 11. Rfd1 Nd7 12. Be3 Nb6 13. Bxb6 axb6 14. Qb5 h6 15. e3 Ra5 16. Qb3 Rc5 17. Nd2 Na5 18. Qc2 Nxc4 {1-0 (36) Bu,X (2705)-Onischuk,V (2601) Doha 2016}) 11... Bxf6 12. Nd2 {[%cal Bf3d2,Bd2b3,Bb3c5][%mdl 32]} Bg7 {The position is equal.} 13. Nb3 Nd4 14. Nc5 {Hoping for e3.} Bc8 $1 15. Rac1 c6 16. b4 Bg4 17. e3 Nf3+ 18. Kh1 Nd2 19. h3 Nxf1 20. hxg4 Nd2 {And now ...Qc8 would win.} 21. Nd7 Qc8 22. Nxf8 Nxc4 (22... Qxf8 $6 23. b5 $16) (22... Bxf8 $11 23. c5 Qxg4) 23. b5 {[#] aiming for Nxg6.} (23. Ne4 $6 Qxf8 24. b5 (24. Rxc4 b5 $17) 24... Nb6 $14) 23... Nb6 24. bxc6 (24. Nxg6 $5 hxg6 25. Qd1 $16 (25. bxc6 Nxa4 26. cxb7 Rb8 $14)) 24... bxc6 25. Qxc6 (25. Nxg6 $5 hxg6 26. Qd1 $16 (26. Qxc6 Qxg4 27. Nd5 Rd8 $16)) 25... Qxf8 (25... Qxc6 $11 {keeps the balance.} 26. Bxc6 Rxf8) 26. Nd5 $36 {[%mdl 2048] Black is under strong pressure.} Nxd5 27. Bxd5 Rd8 {[#]} (27... Re8 $16 {keeps fighting.} 28. g5 Qe7) 28. Qb7 $1 $18 Kh8 29. Bxf7 e4 (29... Qd6 $142 30. Rc7 (30. Qxa7 Qf6 $18) 30... Qb6 31. Qxa7 Qxa7 32. Rxa7 Bf8) 30. Rc7 Be5 31. Rd7 Rxd7 32. Qxd7 Qd6 33. Qxd6 ({Not} 33. Qxa7 Qd1+ 34. Kg2 Qf3+ 35. Kg1 Qd1+ 36. Kg2 (36. Kh2 Qf1 $11) 36... Qf3+ 37. Kg1 Qd1+ 38. Kg2 $11 (38. Kh2 Qf1 $11)) (33. Qe8+ $18 Kg7 34. Bb3) 33... Bxd6 {[%mdl 4096] Endgame KB-KB} 34. Bd5 Kg7 35. Bxe4 Kf6 36. Kg2 Ba3 37. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} h6 $2 (37... Ke7 38. Kf3 Kf8) 38. Kf3 {White is clearly winning.} Bb4 39. Bd5 Be1 40. e4 {[%cal Be3e4,Be4e5][%mdl 32]} Ke7 41. e5 a5 42. f5 {Precision: White = 65%, Black = 37%.} 1-0

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "Real De Azua, Ernesto"]
[Black "Valerga, Diego"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2478"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,53,2,0,6,0,0,0,41,24,22,17,20,0,28,26,29,29,33,45,47,29,34,33,44,35]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O b6 13. Rfe1 Bb7 14. Rad1 Rc8 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5} 15. Bb3 Qf6 16. h3 {LiveBook: 10 Games} (16. d5 $5 {[%cal Re4e5]} Nc5 17. Bc4 $11) 16... Rfd8 {The position is equal.} 17. Qe3 h6 18. d5 e5 {[#]} (18... Nc5 {is interesting.} 19. e5 Qg6 20. d6 Nd7 21. Rd4 Rc5) 19. Rc1 $146 ({Predecessor:} 19. Ba4 Nc5 20. Bb5 {½-½ (33) Ponomariov,R (2714)-Wang,Y (2720) Beijing 2014}) 19... Rxc1 20. Rxc1 Nc5 21. Bc4 Bc8 22. Bb5 Bd7 23. Bxd7 Rxd7 24. Nd2 Qg5 25. Qxg5 hxg5 26. f3 Rc7 27. Kf1 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "Sosa, Tomas"]
[Black "Vasquez Schroeder, Rodrigo"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2467"]
[BlackElo "2554"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,103,31,39,13,18,20,21,15,25,10,17,10,24,16,31,23,36,16,12,14,20,7,16,22,17,11,22,2,27,16,16,14,45,49,50,46,93,59,59,59,65,43,67,71,84,91,89,91,130,115,120,102,121,84,367,375,367,368,377,377,371,366,374,356,365,374,370,362,348,347,333,0,318,0,307,271,256,179,162,186,197,83,89,54,54,54,54,54,54,54,54,54,54,54,54,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6 6. Bd3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} b5 (6... 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}) 7. c3 {[%cal Bc2c3,Bc3d4][%mdl 32]} Bb7 8. Bc2 {The position is equal.} e6 9. d4 Be7 10. Nbd2 cxd4 11. cxd4 Rc8 12. a4 $146 ({Predecessor:} 12. Nf1 O-O {½-½ (26) Hernandez Guerrero,G (2531)-Mareco,S (2585) Durban 2014}) 12... O-O 13. axb5 axb5 14. Bd3 b4 15. Qb3 Qb6 16. Nf1 Ra8 17. Rxa8 Rxa8 18. Ng3 Ba6 19. Bb1 Rc8 20. Bd2 d5 21. e5 $1 {[%cal Re5f6]} Ne8 22. Qe3 Qd8 23. Qf4 Nf8 24. Qg4 b3 25. Nh5 Ng6 26. h4 Qb6 27. Nxg7 Nxg7 28. h5 Bb4 29. hxg6 fxg6 30. Bxb4 Qxb4 31. Kh2 Rc2 $2 {[%mdl 8192]} (31... Qf8 $16) 32. Bxc2 $18 bxc2 33. Qg5 Bb5 34. Ra1 Qxb2 35. Ra8+ Ne8 36. Rc8 Bd7 37. Rc5 Ba4 38. Qf4 Qb7 39. Ne1 Qb1 40. Nf3 (40. Nxc2 Bxc2 41. Rc6 (41. Rc8 Ba4 $11) 41... Bf5 $14) 40... Qb7 41. Ne1 Qb1 42. Qd2 ({Weaker is} 42. Nxc2 Bxc2 43. Rc6 (43. Rc8 Ba4 $11) 43... Bf5 $14) 42... Qd1 43. Qc3 {[%cal Re1c2]} Qh5+ 44. Qh3 Qd1 {[#]} 45. Nxc2 $1 {[%mdl 512]} Bxc2 $16 46. Rc8 Bf5 $1 {[%cal Rf5h3] White is slightly better.} 47. Qh4 ({Avoid the trap} 47. Rxe8+ $2 Kf7 $19) 47... g5 $1 {[%cal Rg5h4]} 48. Qxg5+ Kf7 49. Rb8 {[%mdl 1024] [#] White wants to mate with Rb7+. White has compensation.} Bg6 50. Rb7+ Kg8 51. Re7 {Intending Rxe8+ and mate.} Ng7 $1 52. Qf6 {Precision: White = 70%, Black = 58%.} (52. Ra7 $14 Qh5+ 53. Qxh5 Nxh5 54. g3) 1/2-1/2

[Event "FIDE Zonal 2.5"]
[Site "Villa Martelli-Vicente Lopez"]
[Date "2017.05.08"]
[Round "9"]
[White "De Dovitiis, Alejo"]
[Black "Morovic Fernandez, Ivan"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2331"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,65,69,95,68,66,66,66,66,57,54,60,53,57,28,25,28,38,27,39,0,0,-33,-17,-35,-35,-45,-39,-233,-236,-368,-359,-478,-469,-613,-285,-244,-122,-111,-109,-137,-114,-107,-85,-98,-49,-278,-262,-625,-614,-2007]} 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 c6 7. O-O e5 8. d5 c5 9. Ne1 Nbd7 {LiveBook: 13 Games. E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves} 10. a3 Ne8 11. b4 (11. Nd3 f5 12. f3 f4 13. b4 b6 14. Bd2 h5 15. Rb1 g5 16. bxc5 dxc5 {0-1 (38) Wagner,D (2575)-Movsesian,S (2658) Berlin 2015}) 11... b6 $146 {White is slightly better.} ({Predecessor:} 11... f5 12. g3 f4 13. gxf4 exf4 14. Bb2 Ne5 15. Nf3 Bh3 16. Re1 Qc8 17. Nxe5 Bxe5 {0-1 (29) Constantino,P-Correia,M (2065) Portugal 1997}) 12. Rb1 f5 13. Nd3 Ndf6 14. f3 f4 15. bxc5 bxc5 16. Bd2 g5 17. Nf2 h5 {[%cal Bh7h5,Bh5g4,Bg4g3][%mdl 32]} 18. h3 Rf7 19. Qa4 Bh6 (19... g4 $5) 20. Rb2 g4 21. hxg4 hxg4 22. Rfb1 $2 (22. Nxg4 $15 Nxg4 23. fxg4) 22... Bd7 $19 23. Qa6 {[#]} (23. Qd1 {was necessary.} g3 24. Nh3) 23... g3 $1 24. Nh3 Nh7 25. Nd1 Ng5 (25... Qh4 $142 26. Ndf2 Ng5) 26. Nxg5 Bxg5 ({Black should try} 26... Qxg5 $19 27. Kf1 Qh5) 27. Ba5 $17 Qf6 28. Kf1 ({But not} 28. Qb7 $2 Qh6 $19) 28... Qh6 {[%cal Rh6h1]} 29. Ke1 Qh1+ 30. Bf1 {[#]} Qg1 $1 {And now ...Rh7 would win.} 31. Qb7 $2 ({White should play} 31. Ke2 $15) 31... Rc8 $19 32. Qxa7 $2 (32. Qb3) 32... Rh7 ({Not} 32... Bb5 33. Qxf7+ Kxf7 34. Rxb5 $17) 33. Rb7 {Precision: White = 20%, Black = 61%.} 0-1

