[Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.10"] [Round "7.1"] [White "Diego Saul Rodri Flores Quilla"] [Black "Lucas Costamilan Tomiello"] [Result "1/2-1/2"] [ECO "C11"] [WhiteElo "2414"] [BlackElo "2279"] [Annotator "Stockfish 16"] [PlyCount "62"] [EventDate "2023.??.??"] {[%evp 0,62,37,33,31,26,26,22,82,61,61,-6,20,20,28,44,28,34,38,-27,3,9,19,-3, 15,31,29,-31,28,4,16,-6,2,-34,24,-29,-9,-1,3,10,11,16,15,34,26,19,19,29,28,3,3, 22,17,-2,-9,-7,59,52,261,74,243,97,94,98,98]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 O-O 9. h4 a6 10. h5 b5 11. dxc5 Bxc5 12. h6 g6 13. a3 Qb6 14. Bf2 Bb7 15. Bd3 Rac8 16. O-O Na5 $2 {Mistake. f6 was best.} (16... f6 17. exf6) 17. Ne2 $6 {Inaccuracy. b4 was best.} (17. b4) 17... Nc4 $6 {Inaccuracy. f6 was best.} (17... f6 18. Bxc5 Qxc5+ 19. Kh1 Nc6 20. b4 Qb6 21. Rae1 fxe5 22. fxe5 Ncxe5 23. Nxe5 Nxe5 24. Nf4) 18. Bxc4 Bxf2+ 19. Rxf2 bxc4 20. Qd4 Nc5 21. Ng5 Na4 22. Qxb6 Nxb6 23. Nd4 Na4 24. b3 cxb3 25. cxb3 Nc5 26. Rc2 Nd3 27. Rd2 Nxf4 $6 {Inaccuracy. Rc3 was best.} (27... Rc3 28. Rf1) 28. Rf1 Nh5 $2 {Mistake. f6 was best.} (28... f6 29. Rxf4) 29. Rd3 $2 { Mistake. Rdf2 was best.} (29. Rdf2 Bc6 30. Rxf7 Rxf7 31. Rxf7 Be8 32. Ra7 Ng3 33. Ndxe6 Ne4 34. Rg7+ Kh8 35. Rxh7+ Kg8) 29... a5 $6 {Inaccuracy. f6 was best. } (29... f6 30. Ngxe6) 30. b4 $2 {Mistake. Rdf3 was best.} (30. Rdf3 a4 31. b4 Bc6 32. g4 Bb5 33. Nxb5 Rc4 34. gxh5 Rg4+ 35. Kf2 Rxg5 36. hxg6 Rxe5) 30... axb4 31. axb4 Rc4 1/2-1/2 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.10"] [Round "7.2"] [White "Ivan Excender Soriano Quispe"] [Black "Juan Martin Ibarra"] [Result "1/2-1/2"] [ECO "B50"] [WhiteElo "2214"] [BlackElo "2213"] [Annotator "Stockfish 16"] [PlyCount "72"] [EventDate "2023.??.??"] {[%evp 23,72,0,0,1,4,0,4,6,5,4,7,-14,-15,-15,0,0,0,-2,0,-6,-12,-46,-39,-31,0,0, 0,-1,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,243,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 5. Bd3 g6 6. O-O Bg7 7. Bc2 e5 8. d4 cxd4 9. cxd4 exd4 10. Nxd4 O-O 11. Nxc6 bxc6 12. Nc3 d5 13. Bg5 {[#] aiming for e5. B50: Sicilian: 2. ..d6, Miscellaneous.} h6 14. Bh4 {Black must now prevent e5.} g5 15. Bg3 $1 Nxe4 16. Nxe4 dxe4 17. Qxd8 Rxd8 18. Bxe4 Ba6 19. Rfe1 Bxb2 20. Rab1 Bd4 $146 ( {Predecessor:} 20... Rd2 21. Bxc6 Rc8 22. Bf3 Bd3 23. Rbd1 Rxd1 24. Rxd1 Rc1 25. Rxc1 Bxc1 26. Bb8 a6 {1/2-1/2 (39) Farahat,A (2404)-Paramzina,A (2256) Sharjah 2021}) 21. Bxc6 Rac8 22. Bb7 Bxb7 23. Rxb7 Rd5 24. Re2 Bb6 25. Kh2 Rf5 26. f3 Rc1 27. Bb8 h5 28. Kg3 Ra5 29. Re8+ Kg7 30. Ree7 Rxa2 {Strongly threatening ...h4+.} 31. Rxf7+ Kg6 {( -> ...h4+)} 32. Rg7+ (32. Bxa7 h4+ 33. Kh2 Raa1 34. Rg7+ Kf5 35. Rbf7+ Ke6 36. Re7+ Kd5 37. Rxg5+ Kd6 38. Bb8+ Kxe7 39. Rg7+ Ke6 40. Rg6+ Kf5 41. Rf6+ {[%mdl 64] Decoy} Kxf6 42. Be5+ {[%mdl 64] Decoy} Kxe5 43. f4+ Kf6 44. g4 Rc2#) 32... Kh6 $2 {[%eval 243,26] [#]} (32... Kf6 $11 {[%eval 0,49]}) 33. Rh7+ $2 {[%eval 0,48]} ({Inferior is} 33. Bxa7 Rcc2 $11) (33. h4 $1 $18 {[%eval 243,26][%CAl Rh4g5]} gxh4+ 34. Kh2) 33... Kg6 $11 { The position is equal.} 34. Rbg7+ (34. Bxa7 h4+ 35. Kh2 Raa1 $19) 34... Kf6 35. Rf7+ ({Wrong is} 35. Bxa7 $2 Rg1 $19) 35... Kg6 36. Rhg7+ Kh6 {Accuracy: White = 87%, Black = 84%.} 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.3"] [White "Oro, Faustino"] [Black "Schnaider, Ilan"] [Result "1/2-1/2"] [ECO "B22"] [WhiteElo "2377"] [BlackElo "2333"] [Annotator "Stockfish 16"] [PlyCount "90"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] {[%evp 9,90,33,26,28,28,28,29,27,26,25,27,14,20,20,31,19,103,103,93,90,94,40, 46,42,53,22,25,30,34,37,91,31,36,12,14,13,11,7,14,0,0,0,0,0,1,0,0,-7,3,0,0,0,0, -9,-2,-9,-2,-5,0,0,0,-6,0,-2,0,0,0,-5,0,-8,0,-5,0,-7,-3,-5,-3,-13,0,-2,0,-7,0] } 1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. Bc4 Nf6 5. Ng5 d5 6. exd5 Nxd5 7. Qh5 { [%csl Gg5][%CAl Rh5f7]} g6 $1 {[%CAl Rg6h5]} 8. Qf3 $1 {[%csl Gg5][%CAl Rf3f7] [%mdl 64] [#] Double Attack. White has an edge.} Qxg5 9. Bxd5 Nd8 10. O-O Qe7 11. d4 exd4 12. cxd4 Bg7 {[%eval 103,23]} (12... cxd4 $11 {[%eval 19,28] keeps the balance.} 13. Nd2 Bg7) 13. dxc5 $16 O-O 14. Nc3 Ne6 15. Bxe6 Bxe6 16. Be3 Rfd8 17. Rfd1 Rxd1+ 18. Rxd1 Bxc3 19. bxc3 Bxa2 20. h3 {[%eval 31,25]} (20. h4 $16 {[%eval 91,20]}) 20... a5 $1 $14 21. Ra1 Bb3 {The position is equal.} 22. c6 bxc6 23. Qxc6 Qd8 24. Bd4 a4 25. Qb5 Qe8 26. Qb4 Rc8 27. Qb7 Qe6 28. Qf3 Re8 (28... h6 {is more complex.} 29. Qb7 Kh7 30. Qb4 Rd8 31. Qb7 Qd5) 29. Qf4 Qf5 30. Qd2 (30. Qg3 {seems wilder.} Qe6 31. Qf4 Qf5 32. Qg3) 30... f6 31. Be3 Qe6 32. Qd4 Qe5 33. Qd7 Qe7 34. Qc6 Qe6 35. Qf3 Qf5 36. Qc6 Qe6 37. Qb5 Qe5 38. Qd7 Qe6 39. Qd2 Qf5 40. Bd4 Kf7 41. Qh6 Kg8 42. Qd2 Kf7 43. Be3 Kg8 44. Qd6 Qe5 45. Qd2 Qf5 {Accuracy: White = 82%, Black = 85%.} 1/2-1/2 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.10"] [Round "7.4"] [White "Luigy Lira De Siqueira"] [Black "Yago Labussiere"] [Result "1/2-1/2"] [ECO "B03"] [WhiteElo "2179"] [BlackElo "2185"] [Annotator "Stockfish 16"] [PlyCount "55"] [EventDate "2023.??.??"] {[%evp 0,55,37,37,49,69,58,58,54,37,13,32,31,31,45,5,26,13,23,8,53,33,6,6,46, -6,16,-18,-20,-21,-4,-50,-26,-39,-98,-94,19,26,19,-1,44,37,41,33,20,-7,31,24, 22,29,72,17,15,-37,-34,-54,-21,-201]} 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Nc3 Nc6 7. Be3 Be7 8. Bd3 O-O 9. b3 Bg5 10. Nf3 Bxe3 11. fxe3 Re8 12. Qd2 Qe7 13. Nd1 Bg4 14. O-O Nd7 15. Qf2 $6 {Inaccuracy. b4 was best.} (15. b4 Nf6) 15... Nf6 16. Re1 $2 {Mistake. Qd2 was best.} (16. Qd2 Rad8 17. h3 Bh5 18. Nh4 Bg6 19. Nxg6 hxg6 20. Rf3 d5 21. cxd5 Nb4 22. Bb5 Rf8) 16... Bxf3 17. gxf3 Nh5 $4 {Blunder. Nxd4 was best.} (17... Nxd4 18. Nc3 Ne6 19. Rad1 c6 20. Bf5 Rad8 21. Qh4 g6 22. Bxe6 fxe6 23. Ne2 d5 24. Ng3) 18. Nc3 Nb4 19. Bf1 c6 20. a3 Na6 21. Bg2 Nc7 22. Qe2 $6 {Inaccuracy. f4 was best.} (22. f4 f5) 22... g6 23. Rad1 Qd7 $6 {Inaccuracy. d5 was best.} (23... d5) 24. Qd2 Qf5 25. Rf1 d5 26. c5 $6 {Inaccuracy. e4 was best.} (26. e4 Qf4 27. Ne2 Qxd2 28. Rxd2 Ne6 29. exd5 cxd5 30. f4 Nc7 31. Nc3 Nf6 32. Rd3 Kg7) 26... Rad8 27. b4 Qg5 28. Kh1 $4 {Blunder. f4 was best.} (28. f4 Qh6 29. Rf3 Ne6 30. Kh1 g5 31. fxg5 Nxg5 32. Rf5 Kh8 33. Rg1) 1/2-1/2 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.10"] [Round "7.5"] [White "Fabian Ricardo Reyes Zavaleta"] [Black "Matheus Mendes Domingues Ribei"] [Result "1-0"] [ECO "B54"] [WhiteElo "2122"] [BlackElo "2150"] [Annotator "Stockfish 16"] [PlyCount "70"] [EventDate "2023.??.??"] {[%evp 0,70,19,38,40,41,66,77,66,31,42,-7,42,20,54,50,50,42,54,37,72,62,67,57, 61,63,101,67,58,47,85,55,55,47,74,78,96,55,47,45,45,41,363,21,22,16,56,46,105, 88,73,61,338,436,454,445,488,618,659,231,260,239,239,239,253,256,295,280,309, 92,114,-29999,-30000]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4 e6 7. Nc3 Be7 8. Be3 O-O 9. Be2 Qc7 10. O-O Nc6 11. Qd2 Rd8 12. Rac1 Rb8 $2 { Mistake. Bd7 was best.} (12... Bd7 13. b3) 13. Rfd1 $6 {Inaccuracy. Nd5 was best.} (13. Nd5 Qd7) 13... Ne5 14. a3 Bf8 15. Bg5 Be7 16. Be3 Bf8 17. b3 b6 18. Bg5 $6 {Inaccuracy. g4 was best.} (18. g4 h6 19. h4 d5 20. cxd5 Nexg4 21. Bf4 e5 22. Ncb5 Qd7 23. Nc6 exf4 24. Nxb8 Qe8) 18... Be7 19. f4 Ng6 20. f5 exf5 $4 {Blunder. Ne5 was best.} (20... Ne5 21. Qe1 Re8 22. Qg3 Bd7 23. Kh1 Kh8 24. a4 Nc6 25. Nxc6 Bxc6 26. fxe6 fxe6 27. Bxf6) 21. Nxf5 $4 {Blunder. exf5 was best.} (21. exf5 Nh8 22. Nd5 Nxd5 23. cxd5 Bxg5 24. Qxg5 Qd7 25. Nc6 f6 26. Qf4 Bb7 27. Nxb8 Rxb8) 21... Bxf5 22. exf5 Ne5 $6 {Inaccuracy. Qc5+ was best.} (22... Qc5+ 23. Be3) 23. Kh1 Neg4 $4 {Blunder. Qd7 was best.} (23... Qd7 24. Qf4 h6 25. Bh4 Nh7 26. Bxe7 Qxe7 27. Nd5 Qg5 28. Qxg5 Nxg5 29. Kg1 Ne4 30. b4) 24. Bxg4 $4 {Blunder. Nd5 was best.} (24. Nd5 Nxd5 25. cxd5 Bxg5 26. Qxg5 Nf2+ 27. Kg1 Ne4 28. Qe3 Qe7 29. Bf3 Re8 30. Re1 Qf6) 24... Nxg4 25. Rf1 Nf6 $4 { Blunder. Bxg5 was best.} (25... Bxg5 26. Qxg5 Nf6 27. Nd5 Nxd5 28. cxd5 h6 29. Qh4 Qb7 30. f6 Qxd5 31. fxg7 Qg5 32. Qh3) 26. Bxf6 Bxf6 27. Nd5 Qd7 28. Nxf6+ gxf6 29. Rc3 $6 {Inaccuracy. Qh6 was best.} (29. Qh6 d5 30. Rf3 Qd6 31. Rg3+ Qxg3 32. hxg3 d4 33. Qxf6 d3 34. Rd1 Rd7 35. Qg5+ Kh8) 29... Kh8 30. Qh6 Rg8 31. Qxf6+ Rg7 32. Rd3 Qc6 $6 {Inaccuracy. Qd8 was best.} (32... Qd8 33. Rxd6 Qxf6 34. Rxf6 Kg8 35. Rf4 h5 36. Rh6 b5 37. Rxh5 f6 38. h3 bxc4 39. Rxc4) 33. Rg3 Rbg8 34. Rf4 $4 {Blunder. Re1 was best.} (34. Re1 Qc8) 34... Qe8 35. Rh4 $4 {Checkmate is now unavoidable. Kg1 was best.} (35. Kg1 Qe1+) 35... Qe1# 1-0 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.10"] [Round "7.6"] [White "Miguel Angel Montes Orozco"] [Black "Pranav Sathish"] [Result "1/2-1/2"] [ECO "E00"] [WhiteElo "2097"] [BlackElo "2412"] [Annotator "Stockfish 16"] [PlyCount "102"] [EventDate "2023.??.??"] {[%evp 0,102,37,29,30,-20,-17,-24,-24,-24,31,26,17,3,32,24,19,29,24,15,44,21, 48,-189,-174,-179,11,11,11,11,92,52,61,64,64,63,38,65,66,24,40,22,15,-31,-18, -21,-19,-35,12,0,46,55,75,34,-2,63,0,-34,79,29,79,67,70,94,94,94,96,84,95,34, 66,-6,-12,0,9,-29,102,97,92,57,73,43,57,-1,29,-92,-59,-54,-52,-72,-65,-41,-37, -54,-32,-84,-111,-61,-113,-199,-140,-197,-209,-312,-293]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 b6 5. Bg2 Bb7 6. Ne5 Bd6 7. O-O O-O 8. Nc3 Nbd7 9. Bf4 Qe7 10. Qa4 c5 11. dxc5 $4 {Blunder. cxd5 was best.} (11. cxd5 Bxe5 12. dxe5 Nxd5 13. Rad1 Rfd8 14. Bxd5 exd5 15. Nxd5 Bxd5 16. Rxd5 Nf8 17. Rfd1 Rxd5) 11... Bxe5 12. c6 Bxf4 $4 {Blunder. Bxc6 was best.} (12... Bxc6 13. Qxc6 Rac8 14. Qb7 Rc7 15. Qa6 Bxf4 16. gxf4 Rxc4 17. Qxa7 Rxf4 18. e3 Rg4 19. b3) 13. cxb7 Rab8 14. gxf4 Rxb7 15. cxd5 Nc5 16. Qc2 exd5 17. Nxd5 Nxd5 18. Bxd5 Rd7 19. Bf3 Qh4 $6 { Inaccuracy. Qf6 was best.} (19... Qf6) 20. e3 $6 {Inaccuracy. b4 was best.} ( 20. b4 Ne6 21. e3 g5 22. f5 Rc7 23. Qe4 Qxe4 24. Bxe4 Ng7 25. Rac1 Rfc8 26. Rxc7 Rxc7) 20... Rd6 21. f5 $6 {Inaccuracy. Rfd1 was best.} (21. Rfd1 Rg6+) 21... Rh6 22. Rfd1 Qxh2+ 23. Kf1 Qe5 $6 {Inaccuracy. Rh3 was best.} (23... Rh3 24. Ke2 Rxf3 25. Kxf3 Qh3+ 26. Ke2 Qg4+ 27. Kf1 Ne4 28. Qc7 Qh3+ 29. Ke2 Qxf5 30. Qf4) 24. b4 $6 {Inaccuracy. Rd5 was best.} (24. Rd5 Qf6 25. Rad1 g6 26. Rd6 Ne6 27. R1d5 Rh2 28. Be4 gxf5 29. Rxf5 Qh4 30. Bd5 Qh3+) 24... Na6 $6 { Inaccuracy. Nd7 was best.} (24... Nd7 25. Qe4) 25. a3 Rf6 $6 {Inaccuracy. Nc7 was best.} (25... Nc7 26. Qe4 Qxe4 27. Bxe4 Ne8 28. Bg2 Rd6 29. a4 g6 30. Rxd6 Nxd6 31. Rd1 Nxf5 32. Rd7) 26. e4 $2 {Mistake. Rac1 was best.} (26. Rac1 Nb8 27. Rd5 Qe7 28. Qc7 Qxc7 29. Rxc7 a6 30. e4 g6 31. Bg4 Rc6 32. Rxc6 Nxc6) 26... Nc7 27. Rac1 Nb5 28. Qd3 $6 {Inaccuracy. Qc4 was best.} (28. Qc4) 28... Qf4 $2 {Mistake. Rd6 was best.} (28... Rd6 29. Qe3 Nd4 30. Rc4 Rfd8 31. Bg4 h6 32. Kg2 Nc2 33. Qg3 Ne3+ 34. Qxe3 Rxd1 35. Bxd1) 29. Bg2 Nd6 30. Qd5 $2 {Mistake. Qd2 was best.} (30. Qd2 Qh2 31. Rc3 Ne8 32. Rd3 Rh6 33. Rd8 Rh4 34. Qg5 h6 35. Qg3 Qxg3 36. fxg3 Rg4) 30... Rh6 31. Rc6 Ne8 32. Rxh6 Qxh6 33. e5 Qg5 $6 { Inaccuracy. g6 was best.} (33... g6 34. f6 Nc7 35. Qd7 Ne6 36. Qxa7 Qh5 37. Re1 Qf5 38. Qxb6 Qd3+ 39. Kg1 Qxa3 40. b5) 34. Qe4 g6 35. Bh3 $2 {Mistake. f6 was best.} (35. f6) 35... Ng7 $6 {Inaccuracy. Qh5 was best.} (35... Qh5 36. Qg4) 36. f6 Nh5 37. Rd4 Qh6 $6 {Inaccuracy. Re8 was best.} (37... Re8 38. Qe3) 38. Bg4 Qc1+ 39. Kg2 Qg5 40. Kf3 $6 {Inaccuracy. Qe3 was best.} (40. Qe3 h6 41. Qxg5 hxg5 42. Bd7 Rb8 43. Kf3 Kh7 44. Ke4 Nf4 45. Bg4 Kg8 46. Rd6 a6) 40... Qh4 41. Ke2 $2 {Mistake. Kg2 was best.} (41. Kg2 Nxf6 42. exf6 Qxf6 43. Bf3 Rd8 44. Rc4 Qg5+ 45. Kf1 h5 46. Rc7 h4 47. Be2 Qf6) 41... Qh2 42. Ke3 $2 {Mistake. Kf1 was best.} (42. Kf1) 42... Re8 43. Bxh5 Qxh5 44. f4 Qh3+ 45. Qf3 Qh2 46. Rd2 Qg1+ 47. Qf2 Qc1 48. Kf3 Qxa3+ 49. Kg4 $2 {Mistake. Qe3 was best.} (49. Qe3 Qc1 50. Kg3 Qc8 51. Rd5 h5 52. f5 Qxf5 53. Qh6 Qg4+ 54. Kf2 Qh4+ 55. Kg2 Qe4+) 49... Qb3 $6 {Inaccuracy. Qxb4 was best.} (49... Qxb4 50. Qd4) 50. Qh4 $4 { Blunder. f5 was best.} (50. f5 Kh8) 50... h5+ 51. Kg5 Kh7 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.7"] [White "Silva, Kaua Marques"] [Black "Piccoli, Lucas Fonseca"] [Result "0-1"] [ECO "B33"] [WhiteElo "2235"] [BlackElo "2225"] [PlyCount "55"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] {[%evp 0,55,26,22,71,63,70,40,43,39,28,28,51,43,206,71,71,-63,58,23,43,24,77, 45,80,41,43,43,50,37,37,-17,10,47,30,41,87,86,98,82,90,95,125,72,109,74,69,67, 32,30,75,-21,-101,-128,92,102,143,-291]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d5 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nxd5 Bg7 11. c3 f5 12. Bd3 Ne7 13. Nxe7 Qxe7 14. exf5 e4 15. Be2 O-O 16. Nc2 Bxf5 17. O-O Bg6 18. a4 bxa4 19. Rxa4 a5 20. Bc4 Rab8 21. Ra2 Kh8 22. Re1 Be5 23. Ne3 f5 24. Nd5 Qg5 25. f4 exf3 26. Qxf3 Qh4 27. Rxe5 Qxc4 28. Qe3 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.8"] [White "Filgueiras, Nathan Felipe"] [Black "Tomiello, Mateus Costamilan"] [Result "1-0"] [ECO "B10"] [WhiteElo "2323"] [BlackElo "2145"] [PlyCount "139"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. g3 Bg7 8. Bg2 O-O 9. Nge2 a6 10. d4 b5 11. Qb3 Bb7 12. O-O Nb6 13. Nf4 Rb8 14. a3 Qd6 15. Re1 Rfd8 16. Re5 Ng4 17. Rg5 Nf6 18. Re5 Nc4 19. Nd3 Qb6 20. Be3 Re8 21. h3 Rbd8 22. Re1 Qc7 23. Bf4 Nxe5 24. Nxe5 Nh5 25. Bg5 Bf6 26. Bh6 Bg7 27. Bg5 Nf6 28. Bf4 Qb6 29. Nc6 Bxc6 30. dxc6 e6 31. c7 Rc8 32. d5 Nh5 33. dxe6 fxe6 34. Bg5 Qxc7 35. Rxe6 Kh8 36. Qd5 Rf8 37. Qe4 Nf6 38. Qe2 Qc5 39. Bf4 Rce8 40. Rxe8 Rxe8 41. Qd2 a5 42. Be3 Qe5 43. a4 b4 44. Nb5 Ne4 45. Qd7 Nxg3 46. Nd6 Rf8 47. Nf7+ Rxf7 48. Qxf7 Nf5 49. Bd5 Qb8 50. Bf4 Qd8 51. b3 h5 52. Qb7 Ne7 53. Qa8 Qxa8 54. Bxa8 Bd4 55. Bc7 Kg7 56. Bxa5 Bc5 57. Bc7 Kf6 58. Kg2 Ke6 59. Be4 g5 60. a5 Kd7 61. Bb6 Bxb6 62. axb6 Nc6 63. b7 Nb8 64. Kg3 Ke6 65. Bf3 h4+ 66. Kg4 Kf6 67. Be2 Nc6 68. Bb5 Nb8 69. f4 gxf4 70. Kxf4 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.9"] [White "Castro Salgado, Pablo"] [Black "Vazquez, Facundo"] [Result "1/2-1/2"] [ECO "E12"] [WhiteElo "2150"] [BlackElo "2407"] [PlyCount "89"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 Be7 8. Bb5+ c6 9. Bd3 O-O 10. Qc2 h6 11. O-O Nxc3 12. bxc3 c5 13. Qe2 Qc8 14. e4 Ba6 15. Rd1 Rd8 16. Ne5 Bd6 17. Bf4 c4 18. Bc2 Nd7 19. Ng6 Nf8 20. Bxd6 Nxg6 21. Bg3 Bb7 22. h4 Qc6 23. Qg4 Qe8 24. Re1 f6 25. Rad1 Qf7 26. f4 Ne7 27. Qe2 Rac8 28. Bf2 Kf8 29. h5 Kg8 30. Bh4 Re8 31. Ba4 Bc6 32. Bc2 b5 33. Qf2 Qxh5 34. Rd2 Qf7 35. Re3 Ng6 36. Bd1 Nxh4 37. Qxh4 Qb7 38. Bc2 e5 39. Rg3 Kh8 40. d5 Qb6+ 41. Kh2 Bd7 42. Rf3 Rf8 43. Rdf2 Qd6 44. Rf1 Kg8 45. Qh5 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.10"] [White "Vasquez Vargas, Henry Richard"] [Black "Reyes Zavaleta, Cristhian Yamil"] [Result "1-0"] [ECO "D00"] [WhiteElo "2216"] [BlackElo "1804"] [PlyCount "143"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 d5 2. Nc3 Nf6 3. Bf4 c6 4. e3 Bg4 5. f3 Bh5 6. g4 Bg6 7. h4 h6 8. Bd3 Bxd3 9. Qxd3 e6 10. Nge2 Bd6 11. O-O-O Na6 12. e4 Bxf4+ 13. Nxf4 dxe4 14. fxe4 Qc7 15. e5 O-O-O 16. Qf3 Nd7 17. Ne4 Kb8 18. Kb1 Nb6 19. Nd6 Nc8 20. Nxc8 Kxc8 21. Rhe1 g6 22. c4 Rhe8 23. c5 Rd7 24. h5 g5 25. Ne2 Qa5 26. a3 Red8 27. Rc1 Nc7 28. Red1 Nd5 29. Ng3 Nf4 30. Ne4 Kb8 31. Nd6 Rf8 32. Qe4 Qa4 33. Qh7 Ne2 34. Qxh6 Rfd8 35. Qxg5 Nc3+ 36. Rxc3 Qxd1+ 37. Ka2 Qxd4 38. h6 Qd5+ 39. Ka1 a5 40. Rc1 Qd3 41. Qf6 Ka7 42. Rh1 Qd5 43. Rc1 Qd3 44. g5 Rb8 45. Qg7 Rdd8 46. h7 Rh8 47. Rh1 Qf3 48. Qh6 b6 49. Qh3 Qxh3 50. Rxh3 Rbf8 51. Kb1 bxc5 52. Kc2 Kb6 53. Kc3 c4 54. Kxc4 c5 55. b3 Kc6 56. Rh4 a4 57. b4 cxb4 58. axb4 a3 59. b5+ Kb6 60. Kb3 Kc5 61. Kxa3 Kd5 62. Kb4 Kxe5 63. Kc5 Rc8+ 64. Nxc8 Rxc8+ 65. Kb4 Rh8 66. b6 Kd6 67. b7 Kc6 68. Kc4 Kxb7 69. Kd4 Kc7 70. Ke5 Kd7 71. Kf6 e5 72. Kg7 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.11"] [White "Cahuapaza Tarapaca, Leonardo"] [Black "Seccafim, Caic Dos Santos"] [Result "0-1"] [ECO "A35"] [WhiteElo "1818"] [BlackElo "2062"] [PlyCount "92"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 O-O 6. Be2 cxd4 7. Nxd4 Nc6 8. O-O d6 9. b3 d5 10. Bb2 Nxd4 11. exd4 dxc4 12. bxc4 Bf5 13. Qb3 Ne4 14. Rfd1 Nxc3 15. Bxc3 Qc7 16. Rac1 Rac8 17. Bb4 Rfd8 18. d5 b6 19. g4 Qe5 20. Re1 Bd7 21. Qf3 Qf6 22. Qe3 e6 23. Bf3 Qb2 24. Bc3 Bxc3 25. Rxc3 exd5 26. Rec1 dxc4 27. Qe7 Be6 28. R3c2 Qb5 29. Qf6 Qc5 30. a4 Qd4 31. Qg5 Rc5 32. Qh4 a6 33. Re1 Kg7 34. Re3 Qf6 35. Qg3 b5 36. Rce2 b4 37. h4 h6 38. Re5 Rxe5 39. Rxe5 Rd3 40. Re3 Rxe3 41. fxe3 g5 42. hxg5 hxg5 43. Be4 c3 44. Qd6 b3 45. Qxa6 c2 46. Qc6 Qa1+ 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.12"] [White "Munoz Ramos, Christopher"] [Black "Casalaspro, Mathias Andre"] [Result "1/2-1/2"] [ECO "E99"] [WhiteElo "2038"] [BlackElo "2060"] [PlyCount "97"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e4 d6 5. Nc3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. b4 Nf6 14. Rc1 Ng6 15. c5 Rf7 16. a4 h5 17. a5 g4 18. cxd6 g3 19. hxg3 fxg3 20. Bxg3 cxd6 21. Nd3 h4 22. Bh2 Nh5 23. f4 Ng3 24. Bh5 Nxf1 25. Bxg6 Rf6 26. f5 Nxh2 27. Kxh2 Bd7 28. Qh5 Be8 29. Bxe8 Qxe8 30. Qxe8+ Rxe8 31. Nb5 a6 32. Na3 Bh6 33. Rc3 Rf7 34. Nf2 Bd2 35. Rb3 Rg7 36. Nc4 Be1 37. Nd3 Bg3+ 38. Kh3 Rd8 39. Ne3 Rc7 40. Ng4 Kf7 41. b5 Rdc8 42. bxa6 bxa6 43. Rb6 Rc3 44. Rxd6 Rxd3 45. Rd7+ Kf8 46. Nf6 Bf2+ 47. Kh2 Bg3+ 48. Kh3 Bf2+ 49. Kh2 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.13"] [White "Varillas Jimenez, Ivan"] [Black "Nascimento, Nicolas Daniel Trind"] [Result "1/2-1/2"] [ECO "A14"] [WhiteElo "1985"] [BlackElo "1797"] [PlyCount "52"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. b3 O-O 7. Bb2 d5 8. cxd5 Bxd5 9. Nc3 Bb7 10. d4 Nbd7 11. Qc2 c5 12. e4 Rc8 13. Rfe1 cxd4 14. Nxd4 Qc7 15. Rac1 Qb8 16. Kh1 Qa8 17. f3 Rfd8 18. Rcd1 Ne5 19. Nde2 Ba6 20. Nc1 Bb7 21. Nd3 Nxd3 22. Rxd3 Rxd3 23. Qxd3 Rd8 24. Qe2 Qc8 25. Rd1 Rxd1+ 26. Qxd1 Qc5 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.14"] [White "Nascimento, Kaio Vinicius Da Tri"] [Black "Lima, Carlos Eduardo I De "] [Result "0-1"] [ECO "D13"] [WhiteElo "1310"] [BlackElo "1857"] [PlyCount "77"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 c6 2. c4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 e6 6. Bf4 Be7 7. e3 O-O 8. Bd3 a6 9. O-O Nc6 10. h3 Bd6 11. Ne5 Bxe5 12. dxe5 Nd7 13. Qg4 g6 14. Qg3 Qc7 15. e4 d4 16. Ne2 Re8 17. a3 b5 18. Rac1 Qb6 19. Rfd1 Bb7 20. Bb1 Rad8 21. Bg5 Rc8 22. Bf6 Nxf6 23. exf6 e5 24. Qg5 Na5 25. Ng3 h6 26. Qh4 Kh7 27. f4 Rxc1 28. Rxc1 d3+ 29. Kh2 d2 30. Rd1 Qf2 31. f5 Nc4 32. Qg4 Ne3 33. fxg6+ Kh8 34. Qf3 Qxf3 35. gxf3 Nxd1 36. g7+ Kg8 37. Nf1 Rd8 38. f4 Nxb2 39. Nxd2 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.15"] [White "Reimberg, Arthur Bernardo"] [Black "Nascimento, Luiz Eduardo Da Trin"] [Result "1/2-1/2"] [ECO "C54"] [BlackElo "1877"] [PlyCount "64"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 O-O 6. O-O Bb6 7. Nbd2 d6 8. h3 h6 9. Bb3 Qe7 10. Re1 Be6 11. Bc2 Rad8 12. Nf1 d5 13. Qe2 d4 14. Bd2 Rfe8 15. Ng3 Qd6 16. Nh4 Ne7 17. Qf3 c5 18. cxd4 cxd4 19. Bxh6 Ng6 20. Nxg6 fxg6 21. Bg5 Rf8 22. Qe2 Ba5 23. Bd2 Bb6 24. a3 Qd7 25. Bb4 Rf7 26. Rac1 Rc8 27. Bb1 Bc7 28. Qd1 a5 29. Bd2 Rcf8 30. Rf1 Kh8 31. b4 a4 32. Bc2 b5 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.16"] [White "Errazola, Mauricio"] [Black "Reyes Zavaleta, Sergio Gabriel"] [Result "0-1"] [ECO "D00"] [WhiteElo "1725"] [BlackElo "1287"] [PlyCount "84"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 d5 2. Bf4 Nf6 3. Nc3 c5 4. e3 e6 5. Nb5 Na6 6. Nf3 Bd7 7. c3 Be7 8. Ne5 O-O 9. g4 Bxb5 10. Bxb5 cxd4 11. exd4 Nc7 12. Bd3 Ne4 13. Qe2 f6 14. Nf3 Bd6 15. Bxd6 Nxd6 16. O-O-O Re8 17. Qc2 h6 18. Rde1 Rc8 19. h4 Ncb5 20. g5 Qa5 21. Kb1 Rxc3 22. bxc3 Na3+ 23. Kb2 Nxc2 24. Kxc2 Qxa2+ 25. Kd1 Ne4 26. Bxe4 dxe4 27. Nd2 Qa1+ 28. Kc2 Qa2+ 29. Kd1 hxg5 30. hxg5 f5 31. Rh3 Kf7 32. Ke2 e5 33. Rb1 b6 34. Rb5 Qa6 35. c4 exd4 36. Rxf5+ Kg6 37. Rb5 Qa1 38. Rd5 d3+ 39. Ke3 Qe1+ 40. Kd4 Qxd2 41. Rd6+ Kf7 42. g6+ Ke7 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.10"] [Round "7.17"] [White "De Mattos, Pedro Benedito Flore"] [Black "Da Fonseca Pinto, Joao Gabriel Alves"] [Result "0-1"] [ECO "C54"] [BlackElo "1762"] [PlyCount "92"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 O-O 8. h3 h6 9. Be3 Ba7 10. Nbd2 Be6 11. Re1 Ne7 12. Qc2 Ng6 13. d4 Nh5 14. Bf1 Nhf4 15. Kh2 Qc8 16. dxe5 dxe5 17. Nxe5 Nxg2 18. Bxg2 Nxe5 19. Bxa7 Rxa7 20. f4 Nc4 21. Nxc4 Bxc4 22. b3 Be6 23. f5 Bd7 24. Qf2 c5 25. Re3 f6 26. Rd3 b6 27. c4 Bc6 28. Rad1 Re7 29. Qh4 Rfe8 30. Re1 Qb7 31. Rde3 a5 32. Qh5 Qc7+ 33. Kg1 Rd8 34. Rd1 Red7 35. Rxd7 Qxd7 36. Qe2 Qd4 37. Kh2 Qe5+ 38. Kg1 Qa1+ 39. Kh2 Qb1 40. Bf3 Rd4 41. e5 Bxf3 42. Qxf3 fxe5 43. Rxe5 Rd2+ 44. Re2 Rxe2+ 45. Qxe2 Qxf5 46. Qe8+ Kh7 0-1