[Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.1"] [White "Faustino Oro"] [Black "Ivan Excender Soriano Quispe"] [Result "1/2-1/2"] [ECO "E05"] [WhiteElo "2377"] [BlackElo "2214"] [Annotator "Stockfish 16"] [PlyCount "51"] [EventDate "2023.??.??"] {[%evp 20,51,6,-12,18,19,22,17,34,4,27,9,23,-4,-5,-4,-7,-15,-6,-22,0,0,0,0,0,0, 0,0,0,3,4,6,6,-17]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bg5 Nbd7 {[%CAl Bb8d7,Bd7f6,Bf6e4] [%mdl 32]} 11. Nbd2 h6 {E05: Open Catalan: 5 Nf3 Be7.} 12. Bxf6 $1 Nxf6 13. Nb3 Be4 14. Qc1 Bd5 15. Nc5 Ne4 {[#]} 16. Rd1 $146 ({Predecessor:} 16. Nxe4 Bxe4 17. Rd1 Rc8 18. Qe3 Qd5 19. Nh4 Bxg2 20. Nxg2 Rfd8 21. Nf4 Qd6 {1/2-1/2 (21) Buhmann,R-Zumsande,M Schopfenheim 1997}) 16... Bxc5 {The position is equal.} 17. dxc5 Qf6 18. Qc2 Rad8 19. Rd3 Ng5 20. Nxg5 hxg5 21. Rad1 Bxg2 22. Kxg2 Qf5 23. R1d2 Rd5 24. Rxd5 Qxc2 25. Rxc2 exd5 26. Kg1 {Accuracy: White = 63%, Black = 74%.} 1/2-1/2 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.2"] [White "Pablo Castro Salgado"] [Black "Diego Saul Rodri Flores Quilla"] [Result "0-1"] [ECO "A46"] [WhiteElo "2150"] [BlackElo "2414"] [Annotator "Stockfish 16"] [PlyCount "137"] [EventDate "2023.??.??"] {[%evp 0,137,25,18,17,24,31,21,29,-6,8,23,3,0,0,-6,35,-1,-5,-2,-13,-13,-12,-14, -6,15,19,-13,-14,-19,-5,6,6,14,8,-7,-7,-9,4,0,3,-5,4,-5,5,4,4,4,52,46,49,48,58, 68,38,37,52,5,0,-19,-9,-19,-12,-8,13,7,-8,-23,-9,-18,-18,-30,-27,-43,-22,-31, -20,-28,-29,-98,-98,-101,-101,-119,-73,-85,-92,-101,-81,-101,-78,-99,-79,-123, -132,-113,-118,-136,-39,-82,-29,-66,-32,-7,-22,-14,-2,-8,-8,0,0,0,0,0,0,0,0, -41,-63,-128,-200,-128,-128,-105,-105,-436,-436,-445,-445,-989,-1202,-1202, -1325,-1867,-1113,-1202,-2041,-29983,-1605,-29993]} 1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 Nc6 5. e3 h6 6. Bh4 Be7 7. Nbd2 b6 8. Bd3 Bb7 9. O-O O-O 10. Nc4 d6 11. a4 cxd4 12. exd4 Nd5 13. Bxe7 $6 {Inaccuracy. Bg3 was best.} (13. Bg3 Rc8 14. Re1 Na5 15. Ncd2 Nf6 16. Qe2 Qc7 17. b4 Bxf3 18. gxf3 Nc6 19. Ba6 Rb8) 13... Ncxe7 14. g3 Rc8 15. Re1 Qc7 16. Qe2 Nf6 17. Ncd2 Rfe8 18. Ba6 Bxa6 19. Qxa6 Nc6 20. Rad1 Na5 21. Qb5 Qb7 22. Qd3 Qc6 23. Qb5 Qxb5 24. axb5 Re7 25. Ra1 d5 26. Ne5 Ne8 $6 {Inaccuracy. Rec7 was best.} (26... Rec7 27. h4 Ne8 28. Nb1 g6 29. Kg2 h5 30. Re2 Nd6 31. Na3 Kg7 32. f3 Nab7 33. Nc6) 27. b4 Nb7 28. Nc6 Rec7 29. Nxa7 Ra8 30. Nc6 Rxa1 31. Rxa1 Ned6 32. Ra6 Nxb5 33. Rxb6 Nxc3 34. Nb3 Nd6 35. Nba5 Kh7 36. f3 Nc4 37. Ra6 Ne3 38. Kf2 Nc2 39. Ra8 $2 {Mistake. Rb6 was best.} (39. Rb6 g5 40. Rb8 Na3 41. Rb7 Rxb7 42. Nxb7 Ncb5 43. Ke3 Nc2+ 44. Kd3 Ne1+ 45. Ke3) 39... Nb5 40. Rb8 Ncxd4 41. Rb6 Nxc6 42. Nxc6 Na3 43. Ra6 Nc4 44. f4 Rb7 45. Ke2 g5 46. Kd3 $6 {Inaccuracy. Ra7 was best.} (46. Ra7) 46... gxf4 47. gxf4 Kg6 48. Kd4 Rb5 $6 {Inaccuracy. h5 was best.} (48... h5 49. Kc5 Kf5 50. b5 Kxf4 51. Ra8 Ke4 52. Nd8 Rc7+ 53. Nc6 Rd7 54. Ra1 h4 55. Re1+) 49. Ra7 f6 50. Kc3 Nd6 51. Re7 Rb6 52. Nd4 Ne4+ 53. Kb3 Nc5+ 54. Kc3 Ne4+ 55. Kb3 Kh5 56. Nxe6 Kg4 57. Nc7 Rd6 58. b5 $2 {Mistake. Nb5 was best.} (58. Nb5 Rd8 59. Nd4 Rc8 60. Rd7 Kxf4 61. Rxd5 Nd2+ 62. Ka4 Ke4 63. Rd7 Nc4 64. Kb3 Ne5) 58... Kxf4 $2 {Mistake. Kf3 was best.} (58... Kf3 59. Kc2) 59. Kb4 $4 {Blunder. Ne8 was best.} (59. Ne8) 59... d4 60. Kc4 d3 61. Nd5+ Kf3 62. b6 $4 {Blunder. Ra7 was best.} (62. Ra7 d2 63. Ra3+ Kf2 64. Rd3 f5 65. b6 Rd7 66. h3 Ke1 67. Re3+ Kf1 68. Rd3 Kf2) 62... d2 63. Rxe4 Kxe4 64. b7 Rxd5 65. b8=Q d1=Q 66. Qe8+ Kf4 67. Qb8+ Re5 68. Qb2 $6 {Checkmate is now unavoidable. Kc3 was best.} (68. Kc3 Qc1+) 68... Qe2+ $6 {Lost forced checkmate sequence. Qa4+ was best.} (68... Qa4+ 69. Kc3 Rc5+ 70. Kd2 Rd5+ 71. Qd4+ Qxd4+ 72. Kc2 Rb5 73. Kc1 Ke3 74. h4 Qd2#) 69. Kd4 $6 {Checkmate is now unavoidable. Qxe2 was best.} (69. Qxe2 Rxe2) 0-1 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.3"] [White "Henry Richard Vasquez Vargas"] [Black "Juan Martin Ibarra"] [Result "0-1"] [ECO "D45"] [WhiteElo "2216"] [BlackElo "2213"] [Annotator "Stockfish 16"] [PlyCount "70"] [EventDate "2023.??.??"] {[%evp 0,70,25,18,11,2,26,26,33,15,45,48,45,25,14,-38,-14,-23,16,3,5,9,2,-21, -9,-32,-37,-73,-70,-86,-92,-82,-68,-87,-89,-118,-89,-113,-98,-104,-130,-168, -153,-192,-187,-234,-154,-290,-245,-261,-219,-219,-214,-247,-256,-301,-354, -557,-686,-680,-680,-680,-596,-605,-572,-605,-609,-619,-626,-628,-637,-639, -647]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 h6 8. Rg1 e5 9. cxd5 cxd5 10. g5 hxg5 11. Nxg5 e4 12. Bd2 Nb6 13. h3 Bf5 14. Nf3 g6 15. Ne5 Rc8 16. Ng4 $2 {Mistake. Qb3 was best.} (16. Qb3 O-O) 16... Be6 $6 { Inaccuracy. Nh7 was best.} (16... Nh7 17. O-O-O Ng5 18. Kb1 Kf8 19. Be2 Nf3 20. Rh1 Nc4 21. Bc1 Bb4 22. Bxc4 Rxc4 23. Ne5) 17. Nxf6+ Qxf6 18. Qb3 Kf8 19. a4 Kg7 20. a5 Nc4 21. Bxc4 Rxc4 22. O-O-O b6 23. a6 Rxh3 24. Kb1 Rh2 25. Be1 Qf3 26. Ka1 Rh5 27. Nb1 $2 {Mistake. Bd2 was best.} (27. Bd2 Bd7 28. Rgf1 Rc8 29. Rde1 Bb8 30. Na2 Bh3 31. Rh1 Qxf2 32. Bb4 Be6 33. Be7 Rxh1) 27... Bd7 28. Bc3 $6 {Inaccuracy. Nc3 was best.} (28. Nc3 Bh2 29. Rf1 Bh3 30. Bd2 Bxf1 31. Rxf1 Qg2 32. Rd1 Qxf2 33. Kb1 Qf3 34. Ka2 Qf5) 28... Ba4 29. Qa2 Bxd1 30. Nd2 Ra4 31. Nxf3 Rxa2+ 32. Kxa2 Bxf3 33. Rc1 Be2 34. Bd2 Bxa6 35. Rc6 Bb8 0-1 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.4"] [White "Fabian Ricardo Reyes Zavaleta"] [Black "Ilan Schnaider"] [Result "0-1"] [ECO "D12"] [WhiteElo "2122"] [BlackElo "2333"] [Annotator "Stockfish 16"] [PlyCount "55"] [EventDate "2023.??.??"] {[%evp 0,55,20,17,28,2,30,33,29,26,16,3,8,6,21,21,22,26,37,9,33,38,24,17,23,38, 31,35,32,39,30,37,53,33,39,26,35,34,39,39,54,51,49,-3,-3,-50,29,-66,0,-41,-70, -125,-125,-143,-132,-543,163,-540]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 a5 10. Rc1 Be7 11. Nxg6 hxg6 12. g3 Nbd7 13. cxd5 Nxd5 14. Kf2 Nxc3 15. Bxc3 Nf6 16. Bd3 O-O 17. a3 Rfd8 18. Rhd1 Nd5 19. Bd2 Nb6 20. f4 Nd7 21. e4 Nf6 22. Rc4 b5 23. Qxb5 Rxd4 24. Rxc6 $6 {Inaccuracy. Qb3 was best.} (24. Qb3 Rxc4) 24... Qd7 25. Ra6 Rd8 26. Qxd7 R8xd7 27. Ke1 $4 {Blunder. Bxa5 was best.} (27. Bxa5 Rxd3) 27... Rd8 $4 {Blunder. Rxd3 was best.} (27... Rxd3 28. f5 gxf5 29. exf5 exf5 30. Rxa5 Ne4 31. Re5 Nxd2 32. Rxd2 Rxd2 33. Rxe7 Rd1+ 34. Ke2) 28. Kf2 $4 {Blunder. Bxa5 was best.} (28. Bxa5 R8d7 29. Bc2 Rxd1+ 30. Bxd1 Nxe4 31. Bc2 Nf6 32. b4 Kh7 33. Rc6 Nd5 34. Ke2 Ra7) 0-1 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.5"] [White "Miguel Angel Montes Orozco"] [Black "Nathan Felipe Filgueiras"] [Result "1/2-1/2"] [ECO "B31"] [WhiteElo "2097"] [BlackElo "2323"] [Annotator "Stockfish 16"] [PlyCount "144"] [EventDate "2023.??.??"] {[%evp 0,144,20,19,60,60,68,66,71,66,48,26,18,8,8,9,-5,-2,-4,-16,13,22,20,9,14, -3,3,8,22,22,0,5,0,-30,-10,-73,-14,-39,-105,-37,-42,-36,-50,-22,-26,-42,-10, -20,-40,-49,-53,-56,-54,-39,-76,-86,-98,-85,-41,-54,-12,-12,-12,-39,-11,-6,0, -7,-1,0,0,0,0,0,3,10,2,-72,-35,-39,25,19,19,19,19,20,19,20,35,45,71,57,51,46, 73,41,46,51,64,29,61,64,77,61,40,39,26,33,49,20,89,27,35,14,26,7,14,-27,1,0,27, -29,-7,-19,30,34,0,13,26,16,25,48,22,32,38,48,47,57,121,156,217,218,182,230, 298,29,223]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 bxc6 6. Re1 Nf6 7. e5 Nd5 8. c4 Nc7 9. Nc3 O-O 10. d4 cxd4 11. Qxd4 Ne6 12. Qh4 f6 13. Ne4 fxe5 14. Neg5 Nxg5 15. Bxg5 Qc7 16. Bxe7 $6 {Inaccuracy. Rad1 was best.} (16. Rad1) 16... Rf4 17. Bd8 $6 {Inaccuracy. Qg5 was best.} (17. Qg5 Rf5 18. Qg3 d6 19. Bg5 a5 20. Rad1 Be6 21. b3 a4 22. Bd2 Bf7 23. Ng5 axb3) 17... Qd6 $2 {Mistake. Qb8 was best.} (17... Qxd8) (17... Qb8) 18. Qe7 $2 {Mistake. Qg3 was best.} ( 18. Qf6) (18. Qg3 Qb8 19. Bg5 Rf5 20. Rad1 Qxb2 21. Qh4 d5 22. cxd5 cxd5 23. Rxd5 Be6 24. Rd6 Qxa2) 18... Qxe7 19. Bxe7 Rxc4 20. Nxe5 Rc2 21. Ba3 d5 22. Nd3 Bf5 23. Nb4 Rc4 24. Rac1 Rc8 25. Rxc4 dxc4 26. Rc1 $6 {Inaccuracy. Na6 was best.} (26. Na6 Rd8 27. h3 h5 28. Nc5 Rd2 29. Ne4 Bxe4 30. Rxe4 Bd4 31. Kf1 Rxf2+ 32. Ke1 Bb6) 26... Be6 27. h3 a5 28. Na6 Bd5 $6 {Inaccuracy. c3 was best. } (28... c3 29. bxc3 Bxa2 30. Nc5 Rb8 31. f3 Rb5 32. Rd1 Bf8 33. Ra1 Bd5 34. Ne4 Bg7 35. Rd1) 29. Nc5 Rb8 30. Na4 Kf7 31. Kf1 Bf6 32. f3 g5 33. Rc2 h6 34. Nc3 Rd8 35. Bc5 Be6 36. Bb6 Ra8 37. Ne4 Be5 38. Bf2 Rb8 39. Be1 a4 40. Bc3 Bf4 41. Bd2 Be5 42. Bc3 Bf4 43. Bd2 a3 44. bxa3 Rb1+ 45. Kf2 Bc7 46. Bb4 Rd1 47. Ke2 Rg1 48. Kf2 Rd1 49. Ke2 Rg1 50. Kf2 Rd1 51. Ke2 Rd8 52. Rd2 Bd5 53. Nc3 Bf4 54. Rd1 h5 55. Bc5 Kg6 56. Kf2 Bc7 57. Bd4 h4 58. Kf1 Ra8 59. Bc5 Rd8 60. Bd4 Be6 61. Be3 Rd3 62. Rxd3 cxd3 63. Ke1 Ba5 64. Kd2 Bc4 65. Bc5 Kf5 66. Bb4 Bc7 67. Bc5 Bf4+ 68. Be3 Bd6 $4 {Blunder. Bxe3+ was best.} (68... Bxe3+) 69. Bxg5 Bf4+ $2 {Mistake. Bxa3 was best.} (69... Bxa3 70. Bxh4) 70. Bxf4 Kxf4 71. Ne4 Ba6 $6 {Inaccuracy. Ke5 was best.} (71... Ke5 72. Ke3 Ba6 73. a4 Kd5 74. Nf2 d2 75. Kxd2 Bf1 76. Ng4 Ba6 77. Ke3 Bf1 78. Kf2) 72. Nc3 $4 {Blunder. a4 was best. } (72. a4 Ke5 73. Nc5 Bc8 74. Nxd3+ Kd6 75. a5 Kc7 76. Nc5 Kd6 77. Ne4+ Kc7 78. Ke3 Be6) 72... Bc4 $4 {Blunder. Kg3 was best.} (72... Kg3 73. Nd1 Kxg2 74. f4 Kxh3 75. Ne3 Kg3 76. f5 Bc8 77. f6 Be6 78. a4 h3 79. a5) 1/2-1/2 [Event "U20 Pan-American Chess Championship Ope"] [Site "lichess.org"] [Date "2023.11.08"] [Round "5.6"] [White "Lucas Costamilan Tomiello"] [Black "Lucas Fonseca Piccoli"] [Result "1-0"] [ECO "C77"] [WhiteElo "2279"] [BlackElo "2225"] [Annotator "Stockfish 16"] [PlyCount "97"] [EventDate "2023.??.??"] {[%evp 0,97,20,19,24,19,19,8,17,-3,-10,-10,-7,-7,11,12,20,1,33,-14,1,-6,2,33, 31,25,41,41,24,4,62,62,50,38,45,7,54,45,76,78,75,74,78,75,77,66,59,47,83,88,93, 109,82,70,63,84,84,63,84,23,17,-20,36,-26,82,0,-25,-28,-32,-51,-40,-25,61,56, 127,42,350,230,230,258,258,231,305,330,334,330,407,469,469,492,1099,1119,1173, 1198,1220,29986,29989,29990,29991,29992]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. O-O d6 8. a4 Bg4 9. Nbd2 Nd4 10. Ba2 O-O 11. h3 Nxf3+ 12. Nxf3 Bh5 13. g4 Bg6 14. Nh4 Nd7 15. Nxg6 hxg6 16. f4 $6 {Inaccuracy. Bd5 was best.} (16. Bd5 Rc8) 16... exf4 17. Bxf4 Bf6 $6 {Inaccuracy. bxa4 was best.} (17... bxa4) 18. c3 b4 19. d4 bxc3 20. bxc3 Qe7 21. Qd3 Bg5 22. Qe3 $6 { Inaccuracy. Rf3 was best.} (22. Rf3 Bxf4 23. Rxf4 g5 24. Rf5 g6 25. Rf2 Kg7 26. Bd5 Ra7 27. Raf1 f6 28. Rb1 Rb8) 22... Bxf4 23. Rxf4 Kh7 $2 {Mistake. c6 was best.} (23... c6 24. Raf1) 24. Raf1 f6 25. g5 fxg5 26. Rf7 Rxf7 27. Rxf7 (27. Rf4 Qd8 28. Rxf7 Qe8 29. Qf2 (29. Be6) 29... Rb8) 27... Qd8 28. Be6 $2 { Mistake. e5 was best.} (28. e5 dxe5 29. dxe5 c5 30. Qe4 Rb8 31. Qd5 Nf8 32. Qxd8 Rxd8 33. a5 Nd7 34. e6 Ne5) 28... Qe8 29. Ba2 Rb8 30. Qf2 Qd8 31. h4 $6 { Inaccuracy. Qg3 was best.} (31. Qg3 Rb2 32. Bd5 Nb6 33. Bc6 Nc4 34. Bd5 Rb1+ 35. Kg2 Nb6 36. Bc6 Rb2+) 31... Nf6 32. hxg5 Nh5 33. Qe3 Qe8 34. Rf2 Qxa4 35. Qf3 Rb5 36. e5 d5 $4 {Blunder. Qa3 was best.} (36... Qa3 37. Rc2 Rb8 38. e6 Qa5 39. d5 Qa4 40. Rh2 Qa3 41. Qe3 Qa4) 37. Bxd5 $4 {Blunder. e6 was best.} (37. e6 ) 37... Rb1+ $4 {Blunder. Qa1+ was best.} (37... Qa1+ 38. Kh2 Rxd5 39. Qxd5 Qxc3 40. Rf8 Qd2+ 41. Kg1 Qd1+ 42. Kg2 Qd2+ 43. Kg1) 38. Kh2 Qd1 39. Qxd1 Rxd1 40. Rf8 Rd2+ 41. Kg1 Ng3 42. Bg8+ Kh8 43. Bc4+ Kh7 44. Rf3 Nh5 $6 {Inaccuracy. Rd1+ was best.} (44... Rd1+ 45. Kg2 Nf5 46. Rh3+ Nh6 47. e6 Rc1 48. Kf2 Rc2+ 49. Ke1 Rb2 50. gxh6 Rb8 51. e7) 45. e6 Rd1+ 46. Kf2 Rd2+ 47. Be2 Ng3 $6 { Checkmate is now unavoidable. Rb2 was best.} (47... Rb2 48. e7) 48. Rxg3 Kg8 49. Rf3 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.7"] [White "De Siqueira, Luigy Lira"] [Black "Varillas Jimenez, Ivan"] [Result "1-0"] [ECO "C45"] [WhiteElo "2179"] [BlackElo "1985"] [PlyCount "47"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Be3 Bc5 6. c3 Nge7 7. Bc4 O-O 8. O-O b6 9. f4 d5 10. e5 Qh6 11. Be2 Nxe5 12. Qd2 Nc4 13. Bxc4 dxc4 14. f5 Qd6 15. f6 gxf6 16. Qe2 Ng6 17. Nd2 Re8 18. Qf3 Qe7 19. Rae1 Ba6 20. Nf5 Qf8 21. Ne4 Bxe3+ 22. Rxe3 Re6 23. Qh5 Rae8 24. Rh3 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.8"] [White "Sathish, Pranav"] [Black "Tomiello, Mateus Costamilan"] [Result "1/2-1/2"] [ECO "A12"] [WhiteElo "2412"] [BlackElo "2145"] [PlyCount "87"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. Nf3 d5 2. b3 Bg4 3. Bb2 e6 4. g3 Nf6 5. Bg2 Nbd7 6. c4 c6 7. O-O Be7 8. d3 O-O 9. h3 Bh5 10. g4 Bg6 11. Nh4 a5 12. Nxg6 hxg6 13. a3 Qb6 14. Qc2 Rfe8 15. Nd2 d4 16. Nf3 e5 17. Bc1 Bd6 18. Ng5 Nf8 19. Bd2 c5 20. Rab1 Ne6 21. Nxe6 Rxe6 22. b4 axb4 23. axb4 cxb4 24. Qb3 e4 25. Bxb4 Qxb4 26. Qxb4 Bxb4 27. Rxb4 exd3 28. exd3 Ra3 29. Rxb7 Rxd3 30. c5 Rc3 31. c6 Ne4 32. c7 Nd6 33. Rb6 Nc8 34. Rb7 Re7 35. Rd1 d3 36. Bf1 Rexc7 37. Rxc7 Rxc7 38. Rxd3 g5 39. Rd8+ Kh7 40. Rd5 f6 41. Bd3+ g6 42. Kg2 Kg7 43. Rd8 Nb6 44. Be4 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.9"] [White "Munoz Ramos, Christopher"] [Black "Vazquez, Facundo"] [Result "0-1"] [ECO "D38"] [WhiteElo "2038"] [BlackElo "2407"] [PlyCount "130"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 g5 8. Bg3 Ne4 9. Nd2 Nxg3 10. hxg3 c6 11. Qc2 Be6 12. a3 Be7 13. e3 Nd7 14. O-O-O Nb6 15. Bd3 Qd7 16. f4 Qc7 17. Nf3 O-O-O 18. Kb1 Kb8 19. Rc1 f6 20. Qd2 Qd7 21. Qc2 Bd6 22. f5 Bf7 23. Qf2 h5 24. e4 dxe4 25. Bxe4 Rhe8 26. Bc2 Bc7 27. Rcd1 Nc4 28. Rhe1 Ba5 29. Rxe8 Rxe8 30. Na4 Qd5 31. Bd3 Ne3 32. Rg1 Qa2+ 33. Kc1 Qa1+ 34. Bb1 Ba2 35. Nd2 Nc4 36. Kc2 Nxd2 37. Bxa2 Qxa2 38. Nc5 Qc4+ 39. Kd1 Nb3 40. Nxb3 Qxb3+ 41. Qc2 Qxc2+ 42. Kxc2 Re1 43. Rxe1 Bxe1 44. g4 hxg4 45. b4 Kc7 46. Kd3 Kd6 47. Ke4 a5 48. bxa5 Bxa5 49. g3 Be1 50. a4 Bxg3 51. Ke3 Kd5 52. Kd3 Bc7 53. Ke3 g3 54. Kf3 Kxd4 55. a5 g4+ 56. Kg2 c5 57. Kf1 c4 58. a6 bxa6 59. Kg2 c3 60. Kh1 c2 61. Kg2 Ke3 62. Kh1 c1=R+ 63. Kg2 Rc2+ 64. Kg1 Kf3 65. Kh1 Rc1# 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.10"] [White "Cahuapaza Tarapaca, Leonardo"] [Black "Labussiere, Yago"] [Result "0-1"] [ECO "A45"] [WhiteElo "1818"] [BlackElo "2185"] [PlyCount "180"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 h5 6. Be2 O-O 7. Nf3 c5 8. Qd2 cxd4 9. exd4 Nc6 10. Ne5 Bf5 11. f3 Rc8 12. O-O-O Nb4 13. Nd3 Bxd3 14. Bxd3 Qa5 15. Kb1 a6 16. Rde1 Nc6 17. Ne2 Qxd2 18. Bxd2 Rfe8 19. c3 Na5 20. Bf4 Nc4 21. Bxc4 Rxc4 22. Be5 e6 23. Nf4 Rcc8 24. Nd3 Nd7 25. Kc2 Bxe5 26. Nxe5 Nxe5 27. Rxe5 Kg7 28. Re3 Rc6 29. Kd2 Rb8 30. Kd3 Rb6 31. Re2 Rc8 32. Rc1 Rbc6 33. Rec2 Rd8 34. a4 Kf6 35. Ke3 Rd7 36. Kd3 Rc8 37. Re1 b6 38. Rec1 Rd6 39. Ra1 Ke7 40. Rac1 Rcd8 41. Re1 Kd7 42. Rec1 Ke7 43. Re1 R8d7 44. Ra1 Kd8 45. Rac1 Rc6 46. Ke3 Rc4 47. b3 Rc6 48. Kd3 Ke7 49. Re2 Kf6 50. g3 Rd8 51. Rec2 Rcd6 52. Re2 Rg8 53. Re5 Rc6 54. Rc2 Ke7 55. c4 dxc4+ 56. Rxc4 Kd6 57. f4 Rgc8 58. Re1 b5 59. axb5 axb5 60. Rxc6+ Rxc6 61. Kd2 b4 62. Re5 Rc3 63. Re3 Rc6 64. Re5 Rc7 65. Re3 Kd5 66. Re5+ Kxd4 67. Rb5 Ke4 68. Rxb4+ Kf3 69. Rc4 Rd7+ 70. Kc3 Kxg3 71. b4 Kxh4 72. b5 Kg3 73. Kb4 Rb7 74. Ka5 h4 75. Ka6 Rb8 76. b6 h3 77. Ka7 Rxb6 78. Kxb6 h2 79. Rc3+ Kg4 80. Rc1 Kxf4 81. Kc5 g5 82. Kd4 g4 83. Rf1+ Kg3 84. Ke3 Kg2 85. Rf2+ Kg1 86. Rf4 g3 87. Rd4 h1=Q 88. Rg4 Qh2 89. Rc4 Qf2+ 90. Kd3 Qf1+ 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.11"] [White "Errazola, Mauricio"] [Black "Ribeiro, Matheus Mendes Domin"] [Result "0-1"] [ECO "D35"] [WhiteElo "1725"] [BlackElo "2150"] [PlyCount "66"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be6 6. e3 c6 7. Bd3 Nbd7 8. f4 h6 9. Bh4 g5 10. f5 Bxf5 11. Bxf5 gxh4 12. Qf3 Bd6 13. Nge2 Qe7 14. O-O-O O-O-O 15. Nf4 Kb8 16. Rhf1 Rhe8 17. Rd3 Nb6 18. e4 dxe4 19. Nxe4 Nxe4 20. Re3 Ng5 21. Rxe7 Nxf3 22. Rxe8 Bxf4+ 23. Kd1 Rxe8 24. Rxf3 Bxh2 25. Bg4 Re4 26. Bh5 Rxd4+ 27. Ke2 Nd5 28. Bxf7 Nf4+ 29. Kf2 Rd2+ 30. Ke3 Rxb2 31. Ke4 Rxg2 32. Ke5 Nh3+ 33. Kf6 Re2 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.12"] [White "Silva, Kaua Marques"] [Black "Nascimento, Luiz Eduardo Da Trin"] [Result "1-0"] [ECO "B98"] [WhiteElo "2235"] [BlackElo "1877"] [PlyCount "41"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nbd7 9. Bc4 Nb6 10. Bb3 O-O 11. O-O-O Qc7 12. Rhe1 h6 13. h4 Nh7 14. Bxe7 Qxe7 15. g4 Bd7 16. g5 Be8 17. gxh6 g6 18. h5 Kh8 19. hxg6 fxg6 20. Nxe6 Rf6 21. Qe3 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.13"] [White "Nascimento, Kaio Vinicius Da Tri"] [Black "Seccafim, Caic Dos Santos"] [Result "1-0"] [ECO "A57"] [WhiteElo "1310"] [BlackElo "2062"] [PlyCount "65"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 d6 6. Nc3 Nbd7 7. e4 g6 8. Bd3 Bg7 9. Nge2 O-O 10. O-O Nxb6 11. h3 e6 12. Bc2 exd5 13. Nxd5 Nfxd5 14. exd5 a5 15. Nc3 Rb8 16. Rb1 Bb7 17. Re1 Qf6 18. Ne4 Qd8 19. Bg5 Qc7 20. Bf4 Rbd8 21. Bg5 f6 22. Bd2 Bxd5 23. Bxa5 Ba8 24. b4 cxb4 25. Rxb4 Bxe4 26. Bxe4 Rb8 27. Bxb6 Qd7 28. Bc5 Rbd8 29. Rb7 Qc8 30. Bd5+ Kh8 31. Ree7 Rg8 32. Be3 h5 33. Bh6 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.14"] [White "Da Fonseca Pinto, Joao Gabriel Alves"] [Black "Casalaspro, Mathias Andre"] [Result "0-1"] [ECO "B12"] [WhiteElo "1762"] [BlackElo "2060"] [PlyCount "100"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Qd7 5. Ne2 h5 6. h4 Nh6 7. Bxh6 Rxh6 8. Bxf5 Qxf5 9. Ng3 Qg6 10. Nd2 Na6 11. c3 O-O-O 12. Nf3 c5 13. a3 f6 14. b4 c4 15. b5 Nc7 16. b6 axb6 17. Rb1 b5 18. O-O Qe8 19. Ra1 e6 20. Qc2 b6 21. Rfb1 Kb7 22. a4 Ra8 23. axb5 Ba3 24. exf6 gxf6 25. Rxa3 Rxa3 26. Qc1 Qf8 27. Ne2 Rb3 28. Rxb3 cxb3 29. c4 dxc4 30. Qxc4 Qd6 31. Qxb3 Rh8 32. g3 Qd5 33. Qe3 Ra8 34. Nf4 Qf5 35. Nd2 Ra1+ 36. Kh2 Kb8 37. d5 Nxd5 38. Nxd5 Qxd5 39. Qxb6+ Kc8 40. Qc6+ Kd8 41. Ne4 Qxc6 42. bxc6 Ke7 43. Kg2 Rc1 44. Nd2 Rxc6 45. Nf1 Rc3 46. Ne3 f5 47. Kf3 Kf6 48. Kg2 Rb3 49. Nf1 Rd3 50. Ne3 Ke5 0-1 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.15"] [White "Reyes Zavaleta, Cristhian Yamil"] [Black "Nascimento, Nicolas Daniel Trind"] [Result "1/2-1/2"] [ECO "E18"] [WhiteElo "1804"] [BlackElo "1797"] [PlyCount "47"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 O-O 6. O-O b6 7. cxd5 exd5 8. Nc3 Bb7 9. Bf4 a6 10. Rc1 Nbd7 11. Ne5 c5 12. dxc5 Nxc5 13. Be3 Qd6 14. Nf3 Rfd8 15. Nd4 Qd7 16. b4 Rac8 17. bxc5 bxc5 18. Nf3 d4 19. Ne5 Qc7 20. Qb3 Bxg2 21. Qxf7+ Kh8 22. Qe6 Rf8 23. Kxg2 Bd6 24. Nc4 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.16"] [White "Lima, Carlos Eduardo I De "] [Black "Andriska, Matheus Jose Amante"] [Result "1-0"] [ECO "A18"] [WhiteElo "1857"] [BlackElo "1261"] [PlyCount "63"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 Nf6 2. Nf3 e6 3. c4 Be7 4. Nc3 O-O 5. e4 d6 6. Bd3 Nbd7 7. e5 dxe5 8. dxe5 Ng4 9. Qe2 f6 10. exf6 Bxf6 11. O-O Nge5 12. Nxe5 Bxe5 13. Be3 Nf6 14. Rad1 Qe7 15. Bg5 Bxc3 16. bxc3 Qf7 17. Qe5 Ng4 18. Qg3 Nf6 19. h3 c6 20. Rd2 Kh8 21. Rfd1 Bd7 22. Qh4 h6 23. Bb1 c5 24. Bxf6 Qxf6 25. Qxf6 Rxf6 26. Rxd7 b6 27. Re7 a6 28. Rdd7 Rf4 29. Rxg7 Rxc4 30. Rg3 Re4 31. Bxe4 Rb8 32. Rh7# 1-0 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.17"] [White "De Mattos, Pedro Benedito Flore"] [Black "Reimberg, Arthur Bernardo"] [Result "1/2-1/2"] [ECO "D00"] [PlyCount "50"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg5 O-O 6. Nf3 h6 7. Bh4 c6 8. Bd3 Nbd7 9. O-O Re8 10. Re1 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. h3 Bd7 14. Qf3 Qc7 15. Rad1 Be6 16. Bg3 Bxg3 17. Qxg3 Qxg3 18. fxg3 Rad8 19. Ne2 c5 20. Bb5 Bd7 21. Bxd7 Rxd7 22. Nf4 d4 23. exd4 Rxe1+ 24. Rxe1 Rxd4 25. Re8+ Kh7 1/2-1/2 [Event "U20 Pan-American Chess Championship Open"] [Site "Sede Social CFCSN - Rua Gen. O"] [Date "2023.11.08"] [Round "5.18"] [White "Reyes Zavaleta, Sergio Gabriel"] [Black "De Oliveira, Joao Pedro Almeida"] [Result "1-0"] [ECO "E90"] [WhiteElo "1287"] [PlyCount "41"] [EventDate "2023.11.06"] [EventRounds "9"] [EventCountry "BRA"] 1. d4 g6 2. Nf3 Nf6 3. Bg5 Bg7 4. c4 d6 5. Nc3 Nbd7 6. e4 e5 7. dxe5 Nxe5 8. Nxe5 dxe5 9. Qxd8+ Kxd8 10. Nd5 Rg8 11. Nxf6 Bxf6 12. Bxf6+ Ke8 13. O-O-O Be6 14. Be2 g5 15. Rd2 Rg6 16. Bxe5 Kf8 17. Bh5 Rh6 18. Rhd1 Rxh5 19. Bf6 Rb8 20. Rd8+ Rxd8 21. Rxd8# 1-0