[Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.1"] [White "Flores Quilla, Diego Saul Rodrigue"] [Black "Ibarra, Juan Martin"] [Result "1/2-1/2"] [ECO "B67"] [WhiteElo "2414"] [BlackElo "2213"] [Annotator "Stockfish 16"] [PlyCount "223"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,223,20,9,125,60,69,52,77,34,34,21,38,33,79,49,62,49,45,41,41,20,10,3, 31,33,33,19,24,-9,48,-18,-5,0,15,-49,-49,-31,-17,-8,5,-17,16,-6,8,8,64,64,65, 51,126,10,62,76,65,53,76,97,63,114,91,3,43,43,78,49,99,13,37,-78,-44,0,-86,-86, -149,-149,-173,-167,-72,-99,0,0,-22,-28,76,23,12,12,12,13,79,13,42,61,13,61,13, 30,18,17,17,30,24,24,0,0,0,-9,-12,-12,-12,-28,-17,-21,0,-14,0,-19,-19,-19,-5, -4,-3,-4,-3,-9,-4,-9,4,3,3,2,3,13,20,23,18,9,7,5,5,0,5,0,0,0,0,0,0,-328,-326, -370,-369,-370,-363,-369,-375,-375,-375,-375,-236,-230,-225,-225,-224,-224, -224,-224,-220,-218,-218,-218,-218,-222,-217,-217,-217,-217,-209,-209,-209, -209,-209,-209,-209,-209,-185,-183,-185,-193,-193,-193,-193,-193,-193,-193, -122,-123,-132,-132,-132,-132,-132,-122,-115,-122,-124,-132,-115,-147,-193, -193,-193,-193,-193,-193,-193,-185,-178,-180,-180,-180,-178,-180,-127,-180]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 b5 10. Nxc6 Bxc6 11. Qe3 Be7 12. Bxf6 gxf6 $6 {Inaccuracy. Bxf6 was best.} (12... Bxf6 13. e5) 13. Bd3 Qc7 14. f5 O-O-O 15. Rhe1 Kb8 $6 { Inaccuracy. d5 was best.} (15... d5 16. exd5) 16. Qh3 $6 {Inaccuracy. Nd5 was best.} (16. Nd5 exd5 17. exd5 Bxd5 18. Qxe7 Bxg2 19. Qxf6 Rhe8 20. Kb1 Bf3 21. Rc1 Bd5 22. a3 Kb7) 16... b4 17. Nb1 d5 18. Nd2 e5 19. Kb1 Qb7 20. Qh5 $6 { Inaccuracy. exd5 was best.} (20. exd5 Bxd5) 20... Rhg8 $6 {Inaccuracy. dxe4 was best.} (20... dxe4) 21. g3 dxe4 22. Nxe4 Rd4 23. Qxf7 Rgd8 24. Nf2 $6 { Inaccuracy. Rc1 was best.} (24. Rc1) 24... Bf3 25. Rc1 R8d7 26. Qxh7 a5 27. Qh6 a4 28. Qe3 b3 $6 {Inaccuracy. a3 was best.} (28... a3) 29. cxb3 Bb4 30. Rc3 Bxc3 31. bxc3 R4d6 32. b4 Qc6 33. Bc2 $4 {Blunder. Be4 was best.} (33. Be4 Bxe4+ 34. Nxe4 Rd3 35. Qc5 Rd1+ 36. Rxd1 Rxd1+ 37. Kc2 Qxe4+ 38. Kxd1 Qb1+ 39. Kd2 Qxa2+) 33... Rd2 $2 {Mistake. a3 was best.} (33... a3 34. Qc5 Qxc5 35. bxc5 Rd2 36. Nd3 R2xd3 37. Bxd3 Rxd3 38. Kc2 Rd8 39. Rb1+ Kc7 40. Rb6) 34. Kc1 $2 { Mistake. Ne4 was best.} (34. Ne4 Bxe4 35. Bxe4 Qb5 36. a3 R7d6 37. Bc2 Qc4 38. Qc5 Qxc5 39. bxc5 R6d5 40. h4 Rh2) 34... a3 35. Qxd2 Rxd2 36. Kxd2 Qd5+ 37. Ke3 Qxa2 38. Bb1 Qd5 39. c4 Qxc4 $4 {Blunder. Qb7 was best.} (39... Qb7 40. b5 Bg2 41. Be4 Qa7+ 42. Ke2 Bxe4 43. Nxe4 Qd4 44. Kf3 a2 45. c5 Qd3+ 46. Kg2) 40. Kxf3 Qxb4 41. Rd1 e4+ 42. Nxe4 Qb3+ 43. Ke2 Qb2+ 44. Nd2 Qb5+ 45. Kf2 Qc5+ 46. Kf3 Qc3+ 47. Ke2 Qe5+ 48. Kf3 Qc3+ 49. Ke2 Qe5+ 50. Kf3 Qc3+ 51. Kg2 Qe3 52. Kf1 Ka7 53. Ne4 a2 54. Bxa2 Qxe4 55. Bd5 Qxf5+ 56. Kg1 Qe5 57. Bg2 Kb6 58. Rf1 Kc5 59. Rf3 Qa1+ 60. Bf1 Qd4+ 61. Kg2 Qd2+ 62. Rf2 Qd5+ 63. Kg1 Qd4 64. h4 Kd6 65. Kg2 Qe4+ 66. Kh2 Qd4 67. Rf4 Qd2+ 68. Bg2 Ke7 69. Kh3 Kf7 70. Be4 Qd1 71. Bf3 Qd7+ 72. Bg4 Qd5 73. Rf3 Kg7 74. h5 f5 75. Kh4 $4 {Blunder. Rf1 was best.} (75. Rf1) 75... Qd8+ 76. Kh3 Qd5 $4 {Blunder. fxg4+ was best.} (76... fxg4+ 77. Kxg4 Qd1 78. Kf4 Kh6 79. g4 Qd6+ 80. Kf5 Qd2 81. Ke5 Qg5+ 82. Rf5 Qxg4 83. Rf6+) 77. Kh4 $4 {Blunder. Rf1 was best.} (77. Rf1) 77... Qd8+ 78. Kh3 Qd1 $4 {Blunder. fxg4+ was best.} (78... fxg4+ 79. Kxg4 Qd1 80. Kf4 Kh6 81. g4 Qd6+ 82. Kf5 Qd2 83. Kf6 Qg5+ 84. Ke6 Qxg4+ 85. Rf5) 79. Kh4 fxg4 80. Rf4 Qd8+ 81. Kxg4 Kh6 82. Rf5 Qd1+ 83. Kf4 Qe2 84. g4 Qf2+ 85. Ke4 Qg2+ 86. Kf4 Qf2+ 87. Ke4 Qh4 88. Kf4 Qe7 $6 {Inaccuracy. Qh2+ was best.} (88... Qh2+ 89. Ke4) 89. Kf3 $6 { Inaccuracy. Kg3 was best.} (89. Kg3 Qe1+) 89... Qa3+ $6 {Inaccuracy. Qh4 was best.} (89... Qh4 90. Kf4) 90. Kf4 $6 {Inaccuracy. Kg2 was best.} (90. Kg2 Kg7 91. Rf3 Qc5 92. Rf5) 90... Qb4+ $6 {Inaccuracy. Qd6+ was best.} (90... Qd6+ 91. Kf3 Qh2 92. Ke4 Qg3 93. Rf6+ Kg5 94. Rg6+ Kh4 95. Kf5 Qf3+ 96. Ke6 Qf8 97. h6) 91. Kf3 $6 {Inaccuracy. Kg3 was best.} (91. Kg3 Qe1+ 92. Kh3 Qh1+ 93. Kg3) 91... Qc3+ $6 {Inaccuracy. Qe1 was best.} (91... Qe1 92. Kg2 Qh4 93. Kf3 Qh2 94. Ke4 Qg3 95. Rf6+ Kg5 96. Rg6+ Kh4 97. Kf5 Qf3+ 98. Ke6) 92. Kf4 $6 { Inaccuracy. Kg2 was best.} (92. Kg2 Qe3 93. Kh2 Kg7 94. Kg2 Qe2+ 95. Kg3 Qe1+ 96. Kh3 Qc3+ 97. Kg2 Qe3 98. Rf3 Qe1) 92... Kg7 $6 {Inaccuracy. Qc7+ was best.} (92... Qc7+ 93. Kf3 Qh2 94. Ke4 Qg3 95. Rf6+ Kg5 96. Rg6+ Kh4 97. Kf5 Qf3+ 98. Ke6 Qf8 99. h6) 93. Rg5+ Kf6 94. Rg6+ Kf7 95. Kg5 Qe3+ 96. Kh4 Qe1+ 97. Kg5 Qf2 98. Kh6 Qf4+ 99. Kh7 Qe4 100. Kh6 Qe5 101. Kh7 Qe4 102. Kh6 Qd4 103. Kh7 Qe5 104. Kh6 Qh8+ 105. Kg5 Qe5+ 106. Kh6 Qh8+ 107. Kg5 Qd8+ 108. Kh6 Qh8+ 109. Kg5 Ke7 110. Kf5 Qh7 111. Kg5 Qf7 112. Kh6 1/2-1/2 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.2"] [White "Quispe, Ivan Excender Soria"] [Black "Sathish, Pranav"] [Result "1-0"] [ECO "A88"] [WhiteElo "2214"] [BlackElo "2412"] [Annotator "Stockfish 16"] [PlyCount "53"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,53,20,20,56,63,74,44,78,81,60,51,58,58,42,32,72,52,35,25,58,18,14,-29, -6,-26,-4,-6,92,70,92,42,53,53,65,89,96,96,102,66,81,110,116,136,118,118,125, 122,442,551,877,878,857,908,29993,29994]} 1. d4 f5 $6 {Inaccuracy. Nf6 was best.} (1... Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Bf4 c6 6. Nc3) 2. Nf3 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. Nc3 c6 8. Qc2 Na6 9. a3 Qe8 10. b4 e5 11. e3 Be6 $6 {Inaccuracy. e4 was best.} (11... e4 12. Nd2 Bd7 13. Rb1 Rc8 14. a4 b5 15. d5 cxd5 16. Nxb5 Bxb5 17. axb5 Nc7 18. Bb2) 12. dxe5 dxe5 13. Nxe5 Nh5 14. f4 Bxe5 15. fxe5 Bxc4 16. Ne2 Bxe2 17. Qxe2 Qxe5 $6 {Inaccuracy. Nc7 was best.} (17... Nc7 18. Qa2+) 18. Bb2 Qe6 19. Qd2 Nf6 $2 {Mistake. Nc7 was best.} (19... Nc7 20. e4) 20. Qc3 $2 {Mistake. e4 was best.} (20. e4 Qd7 21. Qc3 Nc7 22. Rad1 Qf7 23. exf5 g5 24. Rd6 Nce8 25. Re6 Rd8 26. Rfe1 Qd7) 20... Nc7 21. e4 Nb5 22. exf5 gxf5 23. Qd2 Ne4 $4 {Blunder. Ng4 was best.} ( 23... Ng4 24. Rae1 Qh6 25. Qxh6 Nxh6 26. Re7 Rf7 27. Re6 Ng4 28. h3 Nc7 29. Re2 Nf6 30. Rxf5) 24. Bxe4 fxe4 25. Qg5+ Qg6 26. Qe5 Rxf1+ $4 {Checkmate is now unavoidable. Rf3 was best.} (26... Rf3 27. Qh8+ Kf7 28. Qxa8 Nd6 29. Qd8 Qe6 30. Rae1 Rf5 31. Rd1 Ne8 32. Rxf5+ Qxf5 33. Rd7+) 27. Rxf1 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.3"] [White "De Siqueira, Luigy Lira"] [Black "Oro, Faustino"] [Result "1/2-1/2"] [ECO "C45"] [WhiteElo "2179"] [BlackElo "2377"] [Annotator "Stockfish 16"] [PlyCount "87"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,87,20,19,19,19,24,5,1,2,29,34,49,49,43,24,24,22,29,66,33,30,33,13,24, 18,27,27,27,27,54,52,6,-48,-17,-39,-39,-47,-31,-95,-104,-104,-122,-124,0,-68, -77,-60,-61,-74,-60,-92,-103,-99,-75,-111,-80,-129,-90,-105,-103,-134,-138, -121,-108,-108,-105,-101,-108,-133,-99,-136,-96,-102,-82,-147,-118,-163,-160, -175,14,22,28,28,28,28,34,57,66,66]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 b6 8. O-O Bb7 9. Nb3 Ne5 10. Nxc5 bxc5 11. Nd2 $6 {Inaccuracy. Bb3 was best.} (11. Bb3 Bxe4) 11... Nxc4 12. Nxc4 Ba6 13. b3 Bxc4 14. bxc4 Qc6 15. Qg4 Ng6 16. Rad1 d6 17. Rd5 $6 {Inaccuracy. f4 was best.} (17. f4 Qxe4 18. Bxc5 O-O 19. Bd4 c5 20. Rfe1 Qc2 21. Bf2 Rae8 22. h4 h5 23. Qg5 Re6 ) 17... O-O 18. f4 Rfe8 $6 {Inaccuracy. f6 was best.} (18... f6) 19. Qf3 Nh4 20. Qh3 $6 {Inaccuracy. Qg3 was best.} (20. Qg3 Rxe4 21. Bxc5 Rxc4 22. Bd4 Rxd4 23. Rxd4 Nf5 24. Qf3 Nxd4 25. cxd4 d5 26. Re1 Re8) 20... Rxe4 21. Bc1 Rxc4 $4 { Blunder. Ng6 was best.} (21... Ng6 22. f5 Ne5 23. f6 Qa4 24. fxg7 Qxc4 25. Rdd1 Re8 26. Bg5 Ng4 27. Rb1 a5 28. Qf3) 22. Rh5 $2 {Mistake. Rg5 was best.} (22. Rg5 Ng6 23. f5 Re8 24. fxg6 hxg6 25. a3 Re2 26. Rg4 Qd5 27. Rg3 Qe6 28. Qxe6 Rxe6) 22... Qxg2+ 23. Qxg2 Nxg2 24. Kxg2 Rxc3 25. Rd5 Re8 26. Rd2 Kf8 27. Kf2 $6 {Inaccuracy. f5 was best.} (27. f5 f6) 27... f6 28. Rg1 Kf7 29. Rgd1 $6 { Inaccuracy. Rb2 was best.} (29. Rb2 Re7 30. Bd2 Rh3 31. Kg2 Ra3 32. Kf2 Ra4 33. Rc2 Ke6 34. h4 Kd5 35. h5 Kc6) 29... Rb8 30. Bb2 Rc4 31. Kg3 Rbb4 32. Rf2 Re4 33. Rd3 Ke6 34. h3 Ra4 35. a3 $6 {Inaccuracy. f5+ was best.} (35. f5+ Kd7 36. a3 Kc6 37. Rg2 d5 38. Kf3 Rf4+ 39. Ke2 Rae4+ 40. Re3 d4 41. Rxe4 Rxe4+) 35... Re1 $6 {Inaccuracy. d5 was best.} (35... d5 36. f5+ Kd6 37. Kf3 Rac4 38. Re3 Rf4+ 39. Kg3 Rxf2 40. Re6+ Kd7 41. Kxf2 Rf4+ 42. Kg2) 36. Kg2 Ree4 $6 { Inaccuracy. Kf5 was best.} (36... Kf5 37. Rb3 Rxf4 38. Rc2 Re7 39. Rb7 a6 40. Ra7 Ra4 41. Kf1 Rh4 42. Rxa6 Rxh3 43. a4) 37. Kg3 $4 {Blunder. f5+ was best.} ( 37. f5+ Kf7) 37... c4 $6 {Inaccuracy. d5 was best.} (37... d5 38. f5+ Kd6 39. Rfd2 d4 40. Kg2 Kd5 41. Rg3 Re7 42. Rb3 Re5 43. Rb8 Rxf5 44. Rd8+) 38. Rc3 $2 { Mistake. f5+ was best.} (38. f5+ Kd7) 38... d5 39. Rfc2 d4 $4 {Blunder. c5 was best.} (39... c5 40. Kf3 Ra5 41. Bc1 Rb5 42. a4 Rb1 43. Be3 Kd6 44. Bf2 Re7 45. Kg4 Reb7 46. h4) 40. Rxc4 Rxc4 41. Rxc4 Re3+ 42. Kf2 Rxh3 43. Bxd4 Rxa3 44. Rxc7 1/2-1/2 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.4"] [White "Domingues Ribeiro, Matheus Mendes"] [Black "Filgueiras, Nathan Felipe"] [Result "1/2-1/2"] [ECO "E18"] [WhiteElo "2150"] [BlackElo "2323"] [Annotator "Stockfish 16"] [PlyCount "59"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,59,20,-4,17,25,45,37,21,17,19,25,15,13,11,11,23,-2,3,-4,14,17,13,9,7, -7,-1,-15,-16,-40,-40,-40,-29,-29,-29,-29,-29,-29,-10,-22,-11,-23,-14,0,8,8,26, 25,35,33,25,13,0,0,21,13,22,15,0,15,20,15]} 1. c4 b6 2. Nf3 Bb7 3. Nc3 Nf6 4. g3 e6 5. Bg2 Be7 6. O-O O-O 7. d4 Ne4 8. Bd2 d5 9. Qc2 Nd7 10. cxd5 exd5 11. Bf4 c5 12. Nxe4 dxe4 13. Nd2 cxd4 14. Nxe4 Rc8 15. Qd3 Nc5 16. Nxc5 Bxg2 17. Kxg2 bxc5 18. b3 Bf6 19. Rac1 Re8 20. Rc2 Qe7 21. Rfc1 h6 22. Qf3 a5 23. h4 Be5 24. Bxe5 $6 {Inaccuracy. Bd2 was best.} (24. Bd2) 24... Qxe5 25. Qf4 Qd5+ 26. Qf3 Qd6 27. Qf5 g6 28. Qf4 Qd5+ 29. Qf3 Qe5 30. Qf4 1/2-1/2 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.5"] [White "Tomiello, Lucas Costamilan"] [Black "Salgado, Pablo Castro"] [Result "0-1"] [ECO "C26"] [WhiteElo "2279"] [BlackElo "2150"] [Annotator "Stockfish 16"] [PlyCount "108"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,108,20,19,24,14,14,-13,22,17,42,7,40,29,24,6,55,43,34,34,34,76,32,34, 38,48,65,0,0,0,0,0,0,0,8,18,10,6,6,-26,-50,-28,11,0,-11,-31,0,-45,-3,-18,-28, -43,-1,-67,-64,-128,-113,-115,-123,-123,-126,-124,-124,-124,-125,-137,-140, -138,-138,-135,-136,-258,-137,-139,-128,-148,-125,-146,-154,-175,-165,-184, -165,-218,-195,-236,-273,-242,-148,-148,-148,-148,-201,-198,-280,-335,-335, -365,-387,-436,-387,-387,-395,-519,-539,-558,-556,-724,-715,-976,-760]} 1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 c6 5. Nf3 d6 6. Be3 Bxe3 7. fxe3 Ng4 8. Qe2 Qb6 9. Ng5 O-O $6 {Inaccuracy. d5 was best.} (9... d5 10. exd5 Nxe3 11. d6 O-O 12. Qh5 Nxg2+ 13. Kf1 Ne3+ 14. Ke1 Ng2+ 15. Kf1) 10. O-O Qxe3+ 11. Qxe3 Nxe3 12. Bxf7+ Kh8 13. Rf3 Nxc2 14. Raf1 Nd4 15. R3f2 Nd7 16. Bc4 Rxf2 17. Rxf2 h6 18. Nf7+ Kh7 19. Nxd6 b5 20. Bf7 a5 21. Ne2 Ba6 22. Nxd4 exd4 23. Be8 Rd8 24. Bxd7 Rxd7 25. e5 c5 26. b3 $4 {Blunder. Ne4 was best.} (26. Ne4 Rd5 27. Rf6 Bc8 28. Rc6 Bf5 29. Nxc5 Rxe5 30. Kf2 b4 31. a3 bxa3 32. bxa3 Re3) 26... Re7 $6 { Inaccuracy. b4 was best.} (26... b4) 27. Rf8 $2 {Mistake. Re2 was best.} (27. Re2 b4) 27... b4 28. Nc4 Bxc4 29. bxc4 $6 {Inaccuracy. dxc4 was best.} (29. dxc4 Rxe5 30. Kf2 Kg6 31. Ra8 Kf5 32. Rf8+ Kg4 33. h3+ Kh4 34. Kf3 Kg5 35. Rc8 Re3+) 29... a4 30. Ra8 a3 31. Ra5 Rxe5 32. Kf2 Kg6 33. Rb5 Kf5 34. Ra5 h5 35. Ra7 g6 36. Rc7 Kf4 37. Rc6 Kf5 38. h4 g5 39. hxg5 Kxg5 40. Rc8 Kf6 41. Rc6+ Ke7 42. Rc7+ Kd6 43. Rh7 Kc6 44. Rh6+ Kb7 45. Rh7+ Ka6 46. Rh6+ Ka5 47. Rh8 Re3 48. Rxh5 Rxd3 49. Ke2 Rg3 50. Rxc5+ Ka4 51. Rc8 Rxg2+ 52. Kd3 Rxa2 53. Kxd4 Kb3 54. c5 Rd2+ 0-1 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.6"] [White "Tomiello, Mateus Costamilan"] [Black "Silva, Kaua Marques"] [Result "1-0"] [ECO "A36"] [WhiteElo "2145"] [BlackElo "2235"] [Annotator "Stockfish 16"] [PlyCount "89"] [EventDate "2023.11.06"] [EventCountry "BRA"] {[%evp 0,89,20,-4,39,20,26,-8,27,17,8,-28,13,6,6,8,6,25,24,48,23,21,70,77,69, 65,65,56,51,21,42,16,68,62,62,29,101,52,69,71,65,65,65,73,49,50,62,17,14,8,67, 26,64,39,77,127,127,75,75,87,151,143,194,180,190,180,210,218,215,209,215,197, 469,476,484,337,338,349,345,353,369,374,419,444,544,543,564,604,765,634,699, 872]} 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5 6. Nge2 d6 7. O-O Be6 8. d3 Nge7 9. Nd5 O-O 10. a3 a5 11. Nec3 Rb8 12. Rb1 b6 13. Bd2 Qd7 14. b4 $6 { Inaccuracy. Qa4 was best.} (14. Qa4) 14... axb4 15. axb4 cxb4 $6 {Inaccuracy. Nxb4 was best.} (15... Nxb4) 16. Nb5 Rfd8 $6 {Inaccuracy. Bxd5 was best.} ( 16... Bxd5) 17. e4 $6 {Inaccuracy. Bxb4 was best.} (17. Bxb4 Nxb4 18. Rxb4 Bxd5 19. cxd5 Rdc8 20. h4 h5 21. Kh2 Qd8 22. Qb3 Ra8 23. Rb1 Ra5) 17... Na7 $6 { Inaccuracy. Bg4 was best.} (17... Bg4 18. f3 Be6 19. Be3 Na7 20. Nxa7 Qxa7 21. Nxb4 Rdc8 22. Rf2 Qd7 23. Nd5 Nxd5 24. cxd5) 18. Rxb4 $2 {Mistake. Nxa7 was best.} (18. Nxa7 Qxa7 19. Bg5 Bxd5 20. cxd5 Qd7 21. h4 h6 22. Be3 h5 23. Kh2 b5 24. Bh3 Qe8) 18... Nec6 19. Rb1 Nxb5 20. Rxb5 Bxd5 21. Rxd5 b5 22. Bg5 Re8 23. Qd2 Nd4 24. c5 Bf8 25. Be3 Ne6 $6 {Inaccuracy. b4 was best.} (25... b4 26. Rb1 b3 27. Bxd4 exd4 28. Bf3 Re5 29. Rxe5 dxe5 30. Bd1 b2 31. Rxb2 Rxb2 32. Qxb2) 26. Bh3 $6 {Inaccuracy. Rc1 was best.} (26. Rc1 Rec8 27. Bh3 b4 28. Rb1 Qc7 29. Rxb4 dxc5 30. Ra4 Qc6 31. Rc4 Rd8 32. Rxe5 Bg7) 26... Qc7 $4 {Blunder. Qc6 was best.} (26... Qc6 27. cxd6 Bxd6 28. Qa5 Nd4 29. Bxd4 exd4 30. Qa7 Red8 31. Qxd4 b4 32. e5 Be7 33. Bd7) 27. cxd6 Bxd6 28. Rc1 Qe7 29. Rc6 Bb4 $6 {Inaccuracy. Bc7 was best.} (29... Bc7) 30. Qb2 $6 {Inaccuracy. Qc2 was best.} (30. Qc2 Ng5 31. Bg2 Ba3 32. h4 Ne6 33. Bh3 Qf6 34. Bxe6 Rxe6 35. Rc8+ Re8 36. Rxe8+ Rxe8) 30... Nd8 $4 {Blunder. Nf8 was best.} (30... Nf8) 31. Rb6 Rxb6 32. Bxb6 Nc6 33. Bd7 Rb8 34. Bxc6 Rxb6 35. Rxe5 Qa7 $6 {Inaccuracy. Bc3 was best.} (35... Bc3 36. Qxc3 Rxc6 37. Qb2 Qf6 38. Rxb5 Qxb2 39. Rxb2 Rc1+ 40. Kg2 Rd1 41. Rb3 g5 42. Rb5) 36. Re8+ Bf8 37. Qb4 Qa1+ 38. Kg2 Qg7 39. Qc5 Ra6 40. Bxb5 Re6 41. Ra8 h5 42. Bc4 Rf6 43. h4 Qh6 44. f4 Qg7 45. d4 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.7"] [White "Piccoli, Lucas Fonseca"] [Black "Reyes Zavaleta, Fabian Ricardo"] [Result "0-1"] [ECO "B85"] [WhiteElo "2225"] [BlackElo "2122"] [PlyCount "102"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. O-O Be7 8. f4 O-O 9. Be3 Nc6 10. Kh1 Qc7 11. Qe1 Nxd4 12. Bxd4 b5 13. a3 Bb7 14. Qg3 Bc6 15. Rae1 Rab8 16. e5 Ne8 17. Bd3 b4 18. Nd1 bxa3 19. bxa3 Bb5 20. Nf2 Bxd3 21. cxd3 dxe5 22. Bxe5 Bd6 23. Ne4 f6 24. Rc1 Qe7 25. Ba1 Bxa3 26. Rc6 Nd6 27. Nxf6+ Rxf6 28. Bxf6 Qxf6 29. Rxa6 Bc5 30. Rc6 Nf5 31. Qe1 Rb1 32. Rc8+ Kf7 33. Rc7+ Ke8 34. Rxc5 Rxe1 35. Rxe1 Kd7 36. Rce5 Qh6 37. d4 Nxd4 38. R5e4 Nf5 39. Ra4 Ne7 40. Ra7+ Ke8 41. h3 Qf6 42. Re4 Kf7 43. Ra6 Nd5 44. Ra7+ Kg6 45. Ra6 Nxf4 46. g3 Qf5 47. Rxf4 Qxh3+ 48. Kg1 Qxg3+ 49. Kh1 Qxf4 50. Rxe6+ Kf5 51. Re2 Qf1+ 0-1 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.8"] [White "Varillas Jimenez, Ivan"] [Black "Vasquez Vargas, Henry Richard"] [Result "1-0"] [ECO "B42"] [WhiteElo "1985"] [BlackElo "2216"] [PlyCount "113"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. c4 Nf6 7. O-O Nc6 8. Nb3 Ne5 9. Qe2 d6 10. Nc3 Be7 11. f4 Nxd3 12. Qxd3 O-O 13. Be3 b6 14. Rac1 Bb7 15. Nd4 Rfe8 16. h3 Rac8 17. b3 Qb8 18. f5 Bf8 19. fxe6 fxe6 20. Nf3 Nd7 21. Bf2 Bc6 22. Nd4 Ba8 23. h4 Ne5 24. Qh3 Bc6 25. a4 Bd7 26. Rcd1 Qb7 27. Qg3 Be7 28. Be3 Kh8 29. Kh1 Qc7 30. Rd2 Qd8 31. Bg5 Bxg5 32. hxg5 Qe7 33. Nf3 Rf8 34. Rfd1 Nxf3 35. gxf3 d5 36. exd5 Rf5 37. Ne4 Rcf8 38. Rd3 exd5 39. cxd5 Rxf3 40. Rxf3 Qxe4 41. Rdd3 Kg8 42. Kh2 Rc8 43. Rd2 Qg6 44. Kg2 Bf5 45. Kg1 Be4 46. Rf1 h5 47. d6 Bc6 48. Qf4 Bd7 49. Qe5 Re8 50. Qd5+ Kh7 51. Rg2 Bh3 52. d7 Bxg2 53. Kxg2 Rd8 54. Rf7 Qc2+ 55. Kg3 Kg6 56. Qe6+ Kh7 57. Qh6+ 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.9"] [White "Vazquez, Facundo"] [Black "Nascimento, Kaio Vinicius Da Tr"] [Result "1-0"] [ECO "E16"] [WhiteElo "2407"] [BlackElo "1310"] [PlyCount "61"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 b6 5. Bg2 Bb7 6. cxd5 exd5 7. Ne5 Bd6 8. Nc3 O-O 9. Bg5 Be7 10. O-O Ne4 11. Bxe7 Qxe7 12. Nxe4 dxe4 13. Qc2 f5 14. f3 e3 15. Qb3+ Kh8 16. Qxe3 Nc6 17. f4 Rae8 18. Rfd1 Nxe5 19. dxe5 Bxg2 20. Kxg2 g5 21. Rac1 c5 22. Qf3 Qf7 23. b3 g4 24. Qc6 Qh5 25. Rd6 Rc8 26. Qd5 Qe8 27. Rd7 Rd8 28. Rd1 Rxd7 29. Qxd7 Qa8+ 30. Kf2 Qe4 31. Qe7 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.10"] [White "Labussiere, Yago"] [Black "Casalaspro, Mathias Andre"] [Result "1/2-1/2"] [ECO "E94"] [WhiteElo "2185"] [BlackElo "2060"] [PlyCount "142"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Nf3 Nbd7 7. O-O e5 8. Qc2 Qe7 9. Be3 c6 10. d5 c5 11. Nh4 Kh8 12. g3 Ng8 13. Bd3 Ndf6 14. f3 Bh6 15. Nd1 Nh5 16. Qd2 Bxe3+ 17. Nxe3 Ng7 18. Rae1 Qd8 19. Qc3 Bh3 20. Rf2 Rc8 21. Nhg2 f5 22. exf5 gxf5 23. f4 e4 24. Bf1 Bxg2 25. Bxg2 Qf6 26. Qxf6 Rxf6 27. Rb1 h5 28. Bf1 Nh6 29. h3 Rg6 30. Kh2 Kg8 31. Be2 Kf7 32. b4 cxb4 33. Rxb4 b6 34. a4 Rc5 35. Rb5 Ng8 36. Rf1 Ne7 37. Ra1 Rxb5 38. axb5 Nc8 39. Nc2 Kf8 40. Nd4 Rf6 41. Nc6 Rf7 42. Kg2 Kg8 43. Kf2 Kh7 44. Ke3 Kh6 45. g4 h4 46. Nd4 Ne7 47. Rg1 Rf8 48. Ra1 Rf7 49. Nc6 Nc8 50. Ra3 Kg6 51. Ra2 Kf6 52. Ra1 Kg6 53. Bd1 Kh7 54. Bc2 Kh6 55. Ra2 Kg6 56. Bb1 Kh6 57. Bc2 Kg6 58. Ra1 Kh6 59. Bd1 Kg6 60. Be2 Kh6 61. Nd4 Ne7 62. Nc6 Nc8 63. Bd1 Kg6 64. Nd4 Ne7 65. Be2 Kh6 66. Rg1 Rf8 67. Rd1 Kg6 68. Nc6 Nc8 69. Nd4 Ne7 70. Rd2 Rf7 71. Rd1 Rf8 1/2-1/2 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.11"] [White "Schnaider, Ilan"] [Black "Nascimento, Nicolas Daniel Trin"] [Result "1/2-1/2"] [ECO "C43"] [WhiteElo "2333"] [BlackElo "1797"] [PlyCount "126"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 c6 8. Nc3 Nxc3 9. bxc3 dxc4 10. Nxc4 Be7 11. Bf4 Be6 12. Qb1 g6 13. Qxb7 Nd7 14. Ne5 Nxe5 15. Bxe5 Bd6 16. Rae1 Bxe5 17. Rxe5 Qb6 18. Qe7 Bxa2 19. h4 Qd8 20. Qa3 Bd5 21. Rg5 Re8 22. Qc1 h6 23. Rg4 h5 24. Rg5 Be4 25. Bc4 Bd5 26. Bxd5 cxd5 27. Qd1 Qc7 28. Qf3 Rac8 29. Qxd5 Re6 30. Rg3 Rd8 31. Qg5 Rde8 32. f4 Re3 33. Rxe3 Rxe3 34. f5 Rg3 35. Qf6 Rh3 36. Qe5 Qxe5 37. dxe5 Rxc3 38. fxg6 fxg6 39. Rf6 Kg7 40. Ra6 Rc5 41. Rxa7+ Kf8 42. Ra6 Rxe5 43. Rxg6 Kf7 44. Rg3 Re4 45. Rf3+ Kg6 46. g3 Re2 47. Kf1 Ra2 48. Rf2 Ra3 49. Kg2 Rb3 50. Ra2 Rc3 51. Ra6+ Kg7 52. Re6 Rb3 53. Kf2 Ra3 54. Re3 Ra5 55. Kf3 Rb5 56. Kf4 Kf6 57. Re4 Rb3 58. Rc4 Rb6 59. Rc5 Rb4+ 60. Kf3 Rb3+ 61. Kg2 Rb2+ 62. Kh3 Kg6 63. Rc6+ Kg7 1/2-1/2 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.12"] [White "Errazola, Mauricio"] [Black "Montes Orozco, Miguel Angel"] [Result "0-1"] [ECO "D35"] [WhiteElo "1725"] [BlackElo "2097"] [PlyCount "50"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 Bf5 7. Bd3 Bxd3 8. Qxd3 Be7 9. h3 O-O 10. Nge2 Re8 11. f3 Nbd7 12. e4 dxe4 13. fxe4 Nc5 14. Qf3 Ncxe4 15. Nxe4 Nxe4 16. O-O Bf6 17. Rad1 Qb6 18. Kh1 Rad8 19. Be5 Rxe5 20. dxe5 Rxd1 21. Rxd1 Nf2+ 22. Kh2 Bxe5+ 23. Ng3 Nxd1 24. Qxd1 g6 25. Qd7 Qf2 0-1 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.13"] [White "Seccafim, Caic Dos Santos"] [Black "Da Fonseca Pinto, Joao Gabriel Alves"] [Result "0-1"] [ECO "C47"] [WhiteElo "2062"] [BlackElo "1762"] [PlyCount "140"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 e5 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 5. Bg2 Nxc3 6. bxc3 Bd6 7. Nf3 O-O 8. O-O Nc6 9. Rb1 Rb8 10. d4 exd4 11. cxd4 Bg4 12. Qd3 h6 13. Bb2 Re8 14. c4 Qd7 15. Qc3 Bb4 16. Qb3 Bf8 17. d5 Na5 18. Qc3 Qa4 19. Rbc1 b6 20. Ne5 Bh5 21. Be4 f6 22. Qd3 fxe5 23. f4 Bc5+ 24. Kh1 Bd4 25. Bxd4 exd4 26. Qxd4 Qd7 27. Bc2 Be2 28. Rf2 Bxc4 29. Rd1 Rbd8 30. Qc3 Bxd5+ 31. Kg1 Qc6 32. Qb2 Nc4 33. Qb1 Kh8 34. Bg6 Re6 35. Bf5 Red6 36. Re1 Bf3 37. Qb4 Rd1 38. Bc2 Rxe1+ 39. Qxe1 Re8 40. Qc3 b5 41. Qxf3 Re1+ 42. Kg2 Ne3+ 43. Kh3 Qxf3 44. Rxf3 Nxc2 45. Rc3 Re2 46. Rxc7 a5 47. Kg4 Kg8 48. Rc5 Nd4 49. Rd5 Rxa2 50. Rxd4 b4 51. Kf5 Rc2 52. Rd8+ Kf7 53. Rd7+ Kf8 54. Ra7 Rc5+ 55. Kg6 Rb5 56. Ra8+ Ke7 57. Ra7+ Kd6 58. Ra8 b3 59. f5 b2 60. Rd8+ Ke7 61. Rd1 b1=Q 62. Rxb1 Rxb1 63. Kxg7 Rb6 64. g4 a4 65. h4 a3 66. g5 hxg5 67. hxg5 a2 68. f6+ Kd6 69. f7 a1=Q+ 70. Kh7 Rb8 0-1 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.14"] [White "Munoz Ramos, Christopher"] [Black "Reyes Zavaleta, Sergio Gabriel"] [Result "1-0"] [ECO "D45"] [WhiteElo "2038"] [BlackElo "1287"] [PlyCount "89"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 dxc4 6. Bxc4 b5 7. Bd3 a5 8. O-O Bb7 9. Qc2 Nbd7 10. e4 Be7 11. e5 Nd5 12. Nxd5 exd5 13. Bxh7 Nf8 14. Bf5 g6 15. Bg4 Ra6 16. Bf4 Bc8 17. Bxc8 Qxc8 18. Qd3 Qg4 19. Bg3 Ne6 20. a4 Rb6 21. axb5 Rxb5 22. Rfc1 O-O 23. h3 Qe4 24. Qc3 Rc8 25. Re1 Bb4 26. Rxe4 Bxc3 27. Rg4 Bxb2 28. Ra2 Bc3 29. Bh4 Rb4 30. Bf6 Nxd4 31. Nxd4 Rxd4 32. f4 Kf8 33. Rh4 Ke8 34. Rh8+ Kd7 35. e6+ Kxe6 36. Rxc8 Rd1+ 37. Kh2 Bxf6 38. Rxc6+ Ke7 39. Re2+ Kf8 40. Rxf6 Rd4 41. Ra6 Kg7 42. Rd6 a4 43. Ra2 Kf8 44. f5 Ke7 45. fxg6 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.15"] [White "Nascimento, Luiz Eduardo Da Tri"] [Black "Andriska, Matheus Jose Amante"] [Result "1-0"] [ECO "C65"] [WhiteElo "1877"] [BlackElo "1261"] [PlyCount "101"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Be7 5. O-O O-O 6. Bxc6 dxc6 7. Nxe5 h6 8. Be3 Bd7 9. c4 Re8 10. Qb3 b6 11. Nc3 c5 12. Rad1 Bf8 13. Nxd7 Qxd7 14. h3 Rad8 15. d4 Nxe4 16. Nxe4 Rxe4 17. dxc5 Qc8 18. Rxd8 Qxd8 19. cxb6 cxb6 20. Rd1 Qf6 21. Qd3 Re8 22. Bd4 Qd6 23. Be3 Qf6 24. Qd4 Qc6 25. Qd7 Qxd7 26. Rxd7 Re7 27. Rd8 Rc7 28. Bf4 Re7 29. Bd6 Re1+ 30. Kh2 Rd1 31. Rxf8+ Kh7 32. Ba3 Rd2 33. Rxf7 Rd4 34. Rxa7 Rxc4 35. Bf8 Rf4 36. Bxg7 Rc4 37. Bd4+ Kg6 38. Bxb6 Rb4 39. Ra6 Kf7 40. b3 Re4 41. Be3 h5 42. Rh6 Re5 43. g4 hxg4 44. hxg4 Ra5 45. a4 Re5 46. Rh7+ Kg6 47. Rg7+ Kxg7 48. Bd4 Kg6 49. Bxe5 Kg5 50. Kg3 Kg6 51. f4 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.16"] [White "Reimberg, Arthur Bernardo"] [Black "Lima, Carlos Eduardo I De"] [Result "0-1"] [ECO "B84"] [BlackElo "1857"] [PlyCount "49"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 d6 6. Be2 Be7 7. O-O a6 8. Be3 Nf6 9. Qd2 h5 10. Rad1 Qc7 11. f4 Nxd4 12. Bxd4 e5 13. Be3 Bd7 14. Kh1 Bc6 15. Nd5 Bxd5 16. exd5 O-O 17. c4 Rab8 18. b4 Ng4 19. Bxg4 hxg4 20. fxe5 g3 21. h3 dxe5 22. Rxf7 Bxb4 23. Rxc7 Bxd2 24. Bb6 Rf6 25. c5 0-1 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.17"] [White "Cahuapaza Tarapaca, Leonardo"] [Black "De Oliveira, Joao Pedro Almeida"] [Result "1-0"] [ECO "A48"] [WhiteElo "1818"] [PlyCount "83"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. d4 g6 2. Nf3 Bg7 3. Bf4 Nf6 4. e3 d6 5. h3 Nbd7 6. Bh2 b6 7. Be2 Bb7 8. O-O c5 9. c3 O-O 10. Nbd2 a6 11. a4 Qc8 12. Bd3 Re8 13. e4 e5 14. Re1 Qc7 15. Rc1 Rac8 16. Qe2 Qc6 17. d5 Qc7 18. Bxa6 Bxa6 19. Qxa6 Ra8 20. Qc4 Ra7 21. b3 Rb8 22. Qf1 Qb7 23. Nc4 Ne8 24. Na3 Nc7 25. c4 Qc8 26. Nd2 Qf8 27. Rc2 f5 28. f4 exf4 29. Bxf4 Bd4+ 30. Kh1 fxe4 31. Nxe4 Ne5 32. Bxe5 Bxe5 33. Rf2 Qg7 34. Nf6+ Kh8 35. Ng4 Na6 36. Nxe5 dxe5 37. Nb5 Rd7 38. Qd3 Nb4 39. Qg3 Re8 40. Rfe2 Rde7 41. d6 Re6 42. Nc7 1-0 [Event "U20 Pan-American Chess Championship"] [Site "Volta Redonda - Rio de Janeir"] [Date "2023.11.06"] [Round "2.18"] [White "De Mattos, Pedro Benedito Flor"] [Black "Reyes Zavaleta, Cristhian Yamil"] [Result "0-1"] [ECO "D35"] [BlackElo "1804"] [PlyCount "50"] [EventDate "2023.11.06"] [EventCountry "BRA"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 O-O 6. e3 Nbd7 7. cxd5 exd5 8. Bd3 c6 9. O-O Re8 10. h3 Ne4 11. Bf4 f5 12. Qe2 Bf6 13. Rad1 Nf8 14. Qc2 g5 15. Bh2 Ng6 16. Rfe1 Qe7 17. Nd2 Qg7 18. Bxe4 fxe4 19. Nf1 Nh4 20. Kh1 g4 21. hxg4 Bxg4 22. Bg3 Nxg2 23. Kxg2 Bf3+ 24. Kg1 Qh6 25. Nh2 Qh3 0-1