[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.1"]
[White "Miguel Angel Montes Orozco"]
[Black "Diego Saul Rodri Flores Quill"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2097"]
[BlackElo "2414"]
[Annotator "Stockfish 16"]
[PlyCount "86"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,86,25,19,60,60,77,46,69,66,66,71,60,47,34,47,17,13,5,17,17,14,15,19,
26,11,54,30,44,18,12,3,18,-14,7,16,-5,-27,18,36,66,71,78,51,53,41,62,34,29,29,
29,29,14,23,18,23,23,-13,-17,-49,-35,-124,-122,-234,-239,-244,-244,-245,-245,
-247,-247,-254,-249,-287,-283,-291,-291,-291,-291,-291,-290,-284,-291,-291,
-291,-327,-333,-782,-829]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. a4 Ngf6 5. Nc3 a6
6. Be2 b6 7. d4 cxd4 8. Qxd4 e5 9. Qe3 Bb7 10. O-O Qc7 11. Rd1 Be7 12. Nd2 Nc5
$6 {Inaccuracy. O-O was best.} (12... O-O 13. Nc4 Rac8 14. b3 Nc5 15. Bf3 Ne6
16. Bb2 Nd7 17. Bg4 Rcd8 18. Nd5 Bxd5 19. exd5) 13. b3 $6 {Inaccuracy. b4 was
best.} (13. b4 Ne6 14. Nc4 Nd7 15. Bb2 O-O 16. Nd5 Bxd5 17. exd5 Bg5 18. Qg3
Nf4 19. Bf1 h6) 13... Ne6 $6 {Inaccuracy. O-O was best.} (13... O-O 14. Bb2
Rfc8 15. b4 Ne6 16. Nc4 Nd4 17. Rxd4 Ng4 18. Bxg4 exd4 19. Qxd4 Qxc4 20. Nd5)
14. Bb2 $6 {Inaccuracy. Nc4 was best.} (14. Nc4) 14... Nd4 15. Rac1 O-O 16. Bf1
Rad8 17. Ne2 Ne6 18. c4 Ng4 19. Qg3 Nh6 20. Nc3 Bg5 21. Nd5 Qb8 22. h4 Bf4 23.
Qd3 $6 {Inaccuracy. Nxf4 was best.} (23. Nxf4 Nxf4) 23... Nc5 24. Qc2 Bxd5 25.
exd5 $6 {Inaccuracy. cxd5 was best.} (25. cxd5 a5) 25... a5 26. g3 Bxd2 27.
Rxd2 f5 28. Re1 $6 {Inaccuracy. Bh3 was best.} (28. Bh3) 28... f4 29. Ba3 Nf5
30. Bxc5 bxc5 31. Bh3 $6 {Inaccuracy. Bd3 was best.} (31. Bd3 Qc8 32. Qd1 fxg3
33. Bxf5 gxf2+ 34. Rxf2 Rxf5 35. Ref1 Rxf2 36. Rxf2 e4 37. Qh5 Qd7) 31... Nd4
32. Rxd4 cxd4 33. Be6+ Kh8 34. g4 Qb4 35. Rb1 f3 36. Kh2 g6 37. Kg3 Rb8 38. Bd7
$6 {Inaccuracy. Qd1 was best.} (38. Qd1) 38... Rf4 $6 {Inaccuracy. Rb7 was
best.} (38... Rb7) 39. Bb5 $6 {Inaccuracy. Qd3 was best.} (39. Qd3 Qc3 40. Qxc3
dxc3 41. Bb5 h5 42. g5 Rg4+ 43. Kxf3 Rf8+ 44. Ke3 Rxh4 45. c5 dxc5) 39... Rbf8
$6 {Inaccuracy. Rb7 was best.} (39... Rb7 40. Ba6 Rc7 41. Qd3 Qb6 42. Bb5 Qb7
43. Rg1 Qc8 44. Kh3 Kg7 45. b4 axb4 46. Bc6) 40. Rd1 $6 {Inaccuracy. Bd7 was
best.} (40. Bd7 Rb8 41. g5 Rbf8 42. Rh1 Qb6 43. Be6 Qc7 44. Qb2 Re4 45. Qa3 h5
46. b4 axb4) 40... Kg7 $6 {Inaccuracy. R8f7 was best.} (40... R8f7 41. Be8 Rg7
42. Bb5 Qc5 43. Bc6 Rgf7 44. Rg1 h5 45. Kh2 d3 46. Qd2 Qd4 47. Be8) 41. Bd7 Rb8
42. Bb5 Qc5 43. Qd2 $2 {Mistake. Bd7 was best.} (43. Bd7 Qb4 44. Qc1 Qc3 45.
Qxc3 dxc3 46. Bb5 h5 47. g5 Rg4+ 48. Kh3 Rg2 49. Rc1 Rxf2) 43... Qc8 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.2"]
[White "Pranav Sathish"]
[Black "Caic Dos Santos Seccafim"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2412"]
[BlackElo "2062"]
[Annotator "Stockfish 16"]
[PlyCount "132"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,132,25,20,83,88,90,63,84,84,41,44,55,26,63,-4,78,87,87,60,44,53,82,99,
86,90,112,83,90,74,74,74,127,123,125,95,95,95,95,96,96,87,91,93,118,118,120,
116,116,117,125,117,117,108,105,108,111,101,114,108,111,112,115,113,111,100,
100,100,100,86,100,100,99,86,88,94,111,108,167,172,168,169,174,143,153,148,161,
166,198,198,205,203,212,212,212,210,207,197,241,213,197,176,196,190,151,136,
951,198,232,245,250,250,250,250,258,274,274,267,272,274,272,250,250,250,250,
241,241,460,527,527,547,547,1016,1429,1509]} 1. Nf3 g6 2. e4 Bg7 3. d4 d6 4.
Bc4 Nf6 5. Qe2 c6 6. e5 Nd5 7. h3 Nc7 8. exd6 Qxd6 9. O-O Be6 10. Nbd2 Bxc4 11.
Nxc4 Qe6 12. Re1 $6 {Inaccuracy. Qd3 was best.} (12. Qd3 b5 13. Nce5 Qd5 14. b3
Nd7 15. c4 Qd6 16. Qe4 bxc4 17. bxc4 Ne6 18. Qxc6 Qxc6) 12... Qxe2 13. Rxe2 Ne6
14. c3 Nd7 15. Ng5 Nxg5 $2 {Mistake. Ndf8 was best.} (15... Ndf8 16. Nf3 Rd8
17. Be3 Rd5 18. b4 Rd7 19. Nce5 Rd5 20. Nd3 Nd7 21. a4 Nb6 22. a5) 16. Bxg5 f6
17. Rae1 e5 18. Bf4 O-O 19. dxe5 fxe5 20. Nxe5 Nxe5 $6 {Inaccuracy. Rxf4 was
best.} (20... Rxf4) 21. Bxe5 Bxe5 22. Rxe5 Kg7 23. Rd1 Rf7 24. f3 Rc8 25. Kf2
Rcc7 26. Rd6 Rfd7 27. Ree6 Kf7 28. Rf6+ Kg7 29. h4 Re7 30. Rf4 Re5 31. Rfd4
Rce7 32. Rd7 Re2+ 33. Kg3 Kf6 34. Rf4+ Kg7 35. Rxe7+ Rxe7 36. Re4 Rd7 37. Rd4
Re7 38. Kf4 Re2 $6 {Inaccuracy. a5 was best.} (38... a5 39. g4 Rf7+ 40. Ke3
Re7+ 41. Re4 Rd7 42. a4 b5 43. axb5 cxb5 44. Re5 Rb7 45. Kd4) 39. Rd7+ Kf6 40.
Rxb7 $2 {Mistake. g4 was best.} (40. g4 Rxb2 41. g5+ Ke6 42. Rxh7 Rh2 43. Kg3
Rxa2 44. Rxb7 c5 45. Rg7 Kf5 46. Rf7+ Ke5) 40... Rxg2 41. Rxh7 Rxb2 42. Rxa7
Rc2 $6 {Inaccuracy. Rh2 was best.} (42... Rh2 43. Kg3 Rc2 44. Ra3 Ke6 45. Kf4
Kd5 46. Kg5 Rg2+ 47. Kh6 Rg3 48. Ra6 c5 49. Rf6) 43. Ra3 c5 44. Ke4 Rh2 $6 {
Inaccuracy. Ke6 was best.} (44... Ke6 45. Ra6+ Kf7 46. Kd3 Rf2 47. Kc4 Rxf3 48.
Ra7+ Ke6 49. Rh7 Kd6 50. Rh6 Kc7 51. Rxg6) 45. Ra6+ Kf7 46. Kd5 Rxh4 47. c4
Rh5+ 48. Kd6 $6 {Inaccuracy. Kc6 was best.} (48. Kc6 g5 49. Ra3 Ke8 50. Ra5
Rh6+ 51. Kc7 Rh7+ 52. Kc8 Rh3 53. Rxc5 Rxf3 54. Rxg5 Ke7) 48... Kf6 $2 {
Mistake. Rf5 was best.} (48... Rf5 49. Ra3) 49. Ra3 g5 50. Rb3 Rh2 51. a3 Rh3
52. Kxc5 Ke5 $2 {Mistake. g4 was best.} (52... g4 53. Rb6+ Kg5 54. fxg4 Rxa3
55. Rb5 Kxg4 56. Kd6 Ra6+ 57. Kc7 Ra7+ 58. Kb6 Ra2 59. c5) 53. Kb4 $4 {Blunder.
f4+ was best.} (53. f4+) 53... Kd4 $6 {Inaccuracy. Kd6 was best.} (53... Kd6
54. a4 Rg3 55. a5 g4 56. fxg4 Rxg4 57. Kb5 Rg8 58. Rd3+ Kc7 59. Rh3 Rb8+ 60.
Kc5) 54. a4 Rh8 55. a5 Rb8+ 56. Ka4 Ra8 57. Rb5 Kxc4 58. Rxg5 Ra6 59. Rg4+ Kc5
60. Rg1 Rf6 61. Rc1+ Kd4 62. Kb5 Rxf3 63. a6 Rb3+ 64. Ka4 Rb2 65. Ra1 Kc4 66.
a7 Kd5 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.3"]
[White "Mathias Andre Casalaspro"]
[Black "Facundo Vazquez"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2060"]
[BlackElo "2407"]
[Annotator "Stockfish 16"]
[PlyCount "105"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,105,25,20,26,20,5,18,20,-4,-3,-3,-3,-7,29,9,12,14,22,10,18,15,11,-7,
-11,-6,-13,-13,-3,1,1,1,14,-5,-1,-29,-29,-30,-26,-22,-15,-3,-19,-18,42,83,75,0,
-17,-29,31,6,0,0,-1,16,21,16,0,36,51,32,47,50,43,54,45,3,0,0,0,9,0,-16,-16,-28,
-3,-36,-43,-32,-51,-56,41,-43,0,13,13,9,49,49,40,40,84,84,108,81,118,118,132,
124,140,91,106,79,183,120,126,150]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Bb4+
5. c3 Ba5 6. e3 Nbd7 7. Nf3 a6 8. Na3 c6 9. Bd3 Bc7 10. O-O O-O 11. Qc2 c5 12.
Bxc7 Qxc7 13. c4 cxd4 14. Nxd4 dxc4 15. Nxc4 b5 16. Nd2 Qxc2 17. Nxc2 Nc5 18.
Be2 Rd8 19. Bf3 Ra7 20. Rfd1 Rad7 21. Nd4 e5 22. Nc6 Re8 23. Nb3 Na4 24. Rdc1
Bb7 25. Nba5 e4 26. b3 Bxc6 27. Nxc6 Nb2 28. Be2 Rd2 29. Nd4 Nd5 30. Kf1 Nf4
31. Ke1 Rxe2+ 32. Nxe2 Nfd3+ 33. Kd2 Nxc1 34. Rxc1 Nd3 35. Rc6 Ra8 36. Rd6 Nxf2
37. Ng3 Ng4 38. Nxe4 Nxh2 39. Nc5 a5 40. Nb7 Nf1+ 41. Kd3 Re8 42. Rd8 Rxd8+ 43.
Nxd8 Kf8 44. Nc6 Ke8 45. Nxa5 h5 46. Nc6 g5 $6 {Inaccuracy. Ng3 was best.} (
46... Ng3) 47. Nd4 $6 {Inaccuracy. a4 was best.} (47. a4 bxa4 48. bxa4 f5 49.
Nd4 Ng3 50. Nf3 f4 51. Nxg5 fxe3 52. Kxe3 Nf5+ 53. Ke4 Nd6+) 47... g4 $2 {
Mistake. b4 was best.} (47... b4) 48. Nf5 Kd7 49. Ke2 Nh2 50. Kf2 $6 {
Inaccuracy. a3 was best.} (50. a3) 50... Kc6 $2 {Mistake. b4 was best.} (50...
b4) 51. a4 b4 $2 {Mistake. Kc5 was best.} (51... Kc5 52. Kg3) 52. e4 $6 {
Inaccuracy. Ng3 was best.} (52. Ng3 h4 53. Nf5 g3+ 54. Ke2 Ng4 55. Nxh4 Ne5 56.
Nf5 Nd7 57. Kd3 Kd5 58. e4+ Kc5) 52... Kc5 53. Ke2 1/2-1/2
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.4"]
[White "Faustino Oro"]
[Black "Christopher Munoz Ramos"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2377"]
[BlackElo "2038"]
[Annotator "Stockfish 16"]
[PlyCount "77"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,77,25,19,60,60,76,51,61,48,26,38,68,67,53,31,34,5,30,9,30,5,8,19,41,
24,20,-41,-25,-22,4,-13,-13,25,51,8,5,14,25,152,141,140,157,190,338,338,338,
337,338,338,774,844,1480,806,1328,1561,1561,1306,1341,1333,1953,1301,29987,
29988,29991,29992,29993,1440,1768,2065,29987,2065,2105,29218,2642,1696,29993,
29994,29999,-30000]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5
e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5
O-O 14. Rg1 Ne5 15. Qg3 b4 16. Nce2 Bd7 $6 {Inaccuracy. d5 was best.} (16... d5
17. fxe6 dxe4 18. Nf5 Bc5 19. Nh6+ Kh8 20. Nxf7+ Rxf7 21. exf7 Bg4 22. Rg2 Rc8
23. Kb1) 17. Nf4 Nc6 $6 {Inaccuracy. Rfc8 was best.} (17... Rfc8 18. fxe6) 18.
fxe6 Nxd4 19. exf7+ Rxf7 20. Rxd4 Qc5 $6 {Inaccuracy. Qa7 was best.} (20... Qa7
) 21. Rd5 Qc6 $4 {Blunder. Qxg1 was best.} (21... Qxg1 22. Qxg1 Rxf4 23. Bd3
Raf8 24. Qa7 R4f7 25. Qxa6 Be6 26. Bc4 Kh8 27. Rd1 Bxg5+ 28. Kb1) 22. g6 hxg6
23. Nxg6 Rc8 24. Bd3 Bf6 25. Rh5 Bxb2+ $2 {Checkmate is now unavoidable. Rff8
was best.} (25... Rff8 26. Ne7+ Kf7 27. Nxc6 Rxc6 28. e5 dxe5 29. Rf1 Ke8 30.
Rxe5+ Kd8 31. Rd5 Kc8 32. Rxd7) 26. Kb1 $2 {Lost forced checkmate sequence.
Kxb2 was best.} (26. Kxb2 Qc3+ 27. Kb1 Rf6 28. Ne7+ Kf7 29. Qxg7+ Ke6 30. Nxc8
Qxc8 31. Rg6 Rxg6 32. Qxg6+ Ke7) 26... Rff8 27. Ne7+ Kf7 28. Nxc6 Rxc6 29. Kxb2
Rg8 30. Rh7 Be6 31. Rxg7+ Rxg7 32. Qxg7+ Ke8 33. Qf6 Bf7 34. Rg7 Rc7 35. Qxd6
Rd7 36. Qb8+ Ke7 37. Bc4 Rd5 38. Bxd5 Kd7 39. Rxf7# 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.5"]
[White "Ivan Varillas Jimenez"]
[Black "Ilan Schnaider"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "1985"]
[BlackElo "2333"]
[Annotator "Stockfish 16"]
[PlyCount "123"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,123,20,19,60,60,88,77,66,34,34,35,58,71,69,21,21,14,35,47,23,19,17,27,
20,22,37,39,39,39,39,14,14,-29,-41,-112,-70,-26,-26,-32,-32,-3,-3,-3,-3,-3,19,
0,0,0,0,0,0,0,0,54,110,61,148,19,11,22,25,25,23,10,10,-70,-58,-41,-46,-37,-46,
-40,-44,-88,-76,-36,-36,-36,0,0,0,0,0,-34,116,136,145,121,114,321,329,239,418,
434,443,455,451,452,461,462,462,487,523,572,569,609,655,653,653,509,742,599,
755,765,871,1002,1012,1012,1022,982,1311,1850,29955,29976]} 1. e4 c5 2. Nf3 d6
3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7
10. g4 h6 11. Bxf6 Bxf6 12. h4 Nb6 13. g5 Bxd4 14. Rxd4 Qc5 15. Qf2 hxg5 16. e5
gxf4 17. Bd3 d5 18. Ne4 dxe4 19. Rd8+ Kxd8 20. Qxc5 Nd7 21. Qg1 exd3 22. Qxg7
Rf8 $6 {Inaccuracy. Rh5 was best.} (22... Rh5 23. Qxf7) 23. Rd1 Kc7 24. Rxd3 b6
25. Rc3+ Kb8 26. Rd3 Kc7 27. Qg5 Re8 28. Qxf4 Bb7 $6 {Inaccuracy. Nc5 was best.
} (28... Nc5) 29. Qc4+ $4 {Blunder. Qxf7 was best.} (29. Qxf7 Bd5 30. c4 Bc6
31. Rd6 Rad8 32. b3 b5 33. Rxe6 Rg8 34. Qe7 Kb6 35. a4 Kb7) 29... Bc6 30. Rc3
Nxe5 31. Qf4 f6 32. Qxf6 Nd7 33. Qf4+ Kb7 34. Qd6 Nc5 35. Rg3 Rad8 36. Rg7+ Rd7
37. Rxd7+ Nxd7 38. h5 Rh8 39. Qh2 Rh6 40. Qh4 a5 41. Qg5 Rf6 42. b3 Rf7 43. Qg6
Rf1+ 44. Kb2 Rh1 $4 {Blunder. Rf6 was best.} (44... Rf6 45. Qg7) 45. h6 Ka6 46.
Qxe6 $4 {Blunder. Qg7 was best.} (46. Qg7) 46... Kb7 $4 {Blunder. Ne5 was best.
} (46... Ne5 47. Qxe5 Rxh6 48. c4 Rg6 49. a3 Ka7 50. c5 bxc5 51. Qxc5+ Ka6 52.
a4 Rf6 53. Qd4) 47. Qg6 Rh4 48. Qg7 Ka6 49. h7 Rxh7 50. Qxh7 Nc5 51. Qc7 Bb7
52. a3 Ka7 53. b4 axb4 54. axb4 Na6 55. Qd6 b5 $6 {Inaccuracy. Bh1 was best.} (
55... Bh1 56. c4) 56. c3 $6 {Inaccuracy. c4 was best.} (56. c4 bxc4 57. b5 Nb4
58. Qxb4 Kb6 59. Qxc4 Bh1 60. Qf7 Bb7 61. Qg7 Ba8 62. Qg6+ Kc5) 56... Nb8 $2 {
Mistake. Bc8 was best.} (56... Bc8 57. Qc6 Bf5 58. Qxb5 Bd3 59. Qd7+ Kb8 60.
Qd8+ Kb7 61. Qd5+ Kb8 62. Ka3) 57. Qc5+ $2 {Mistake. c4 was best.} (57. c4 Bc6
58. Qc7+ Ka6 59. cxb5+ Kxb5 60. Qxb8+ Kc4 61. Qf4+ Kd5 62. Qf5+ Kd6 63. Qc5+
Kd7) 57... Ka6 58. c4 Bc6 59. cxb5+ Bxb5 60. Qc7 Nc6 $6 {Checkmate is now
unavoidable. Nd7 was best.} (60... Nd7 61. Qa5+ Kb7 62. Qxb5+ Kc7 63. Qa6 Ne5
64. Qa7+ Kd6 65. Qd4+ Ke6 66. b5 Kf5 67. Qd5) 61. Kc3 Ba4 62. Kc4 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.6"]
[White "Nathan Felipe Filgueiras"]
[Black "Luiz Eduardo Da Trindade Nasc"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2323"]
[BlackElo "1877"]
[Annotator "Stockfish 16"]
[PlyCount "51"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
{[%evp 0,51,20,19,60,60,69,52,59,34,34,34,47,35,25,-20,-11,11,21,37,24,42,67,
32,68,53,62,68,68,68,121,66,86,97,108,110,149,133,154,145,173,170,251,269,319,
312,271,290,363,403,422,422,460,334]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 a6 6. h3 e5 7. Nde2 Nc6 $6 {Inaccuracy. h5 was best.} (7... h5 8. Bg5
Be6 9. Bxf6 Qxf6 10. Nd5 Qd8 11. Nec3 g6 12. Bc4) 8. g4 h6 9. Bg2 b5 10. Be3
Be6 11. Ng3 g6 12. Qd2 Na5 13. b3 Rc8 14. O-O Nb7 15. Nd5 Bxd5 16. exd5 Qc7 17.
Rac1 Be7 $2 {Mistake. Qc3 was best.} (17... Qc3 18. Qe2 Bg7 19. a4 O-O 20. axb5
axb5 21. Qxb5 Nc5 22. Rfd1 Rfe8 23. Qe2 e4 24. Rd4) 18. Bxh6 $6 {Inaccuracy.
c4 was best.} (18. c4 Qd7 19. cxb5 axb5 20. Rxc8+ Qxc8 21. Rc1 Qd8 22. Bxh6 Nc5
23. b4 Ncd7 24. Rc6 Nb6) 18... Nc5 19. Be3 Qb7 $6 {Inaccuracy. Nfd7 was best.}
(19... Nfd7 20. g5 a5 21. Qe2 Kf8 22. Qg4 Kg7 23. f4 f5 24. gxf6+ Nxf6 25. Qe2
Rcf8 26. c4) 20. c4 b4 21. f4 e4 $6 {Inaccuracy. exf4 was best.} (21... exf4
22. Bxc5 Rxc5 23. Qxf4 O-O 24. g5 Ne8 25. h4 Qb6 26. Kh1 Qd8 27. Be4 Ng7 28.
Rce1) 22. Bd4 Kd7 23. Rce1 Rhe8 24. g5 Nh5 25. Nxh5 gxh5 26. h4 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.7"]
[White "Lima, Carlos Eduardo I De"]
[Black "Tomiello, Lucas Costamilan"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1857"]
[BlackElo "2279"]
[PlyCount "82"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. b3 O-O 5. Bb2 d5 6. Be2 c5 7. O-O cxd4 8. Bxd4
Nc6 9. Bb2 Qc7 10. Na3 Bf5 11. c4 dxc4 12. Nxc4 Rfd8 13. Qc1 Rac8 14. Rd1 Rxd1+
15. Qxd1 Rd8 16. Qe1 Nd5 17. Bxg7 Kxg7 18. a3 e5 19. Rc1 f6 20. b4 Qe7 21. b5
Nb8 22. Qa5 b6 23. Qe1 Nd7 24. Nfd2 Nc5 25. Qf1 Nc7 26. Nb1 Nxb5 27. Nxe5 Qxe5
28. Bxb5 Nb3 29. Rc3 Bxb1 30. Rxb3 Bc2 31. Rb1 Bxb1 32. Qxb1 Qf5 33. e4 Qc5 34.
Kf1 Rd2 35. Be2 Rc2 36. Qb3 Qc3 37. Qd5 Rd2 38. Qb7+ Kh6 39. f3 Qe3 40. Qa6 Rb2
41. g3 b5 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.8"]
[White "Silva, Kaua Marques"]
[Black "Cahuapaza Tarapaca, Leonardo"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2235"]
[BlackElo "1818"]
[PlyCount "201"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Nc6 7. cxd5 Nxd5 8.
Bc4 Bb4 9. Qd3 O-O 10. a3 Be7 11. O-O Nxc3 12. Qxc3 Bf6 13. Rd1 Bd7 14. Qd3 Ne7
15. Ne5 Bxe5 16. dxe5 Bc6 17. Qe2 Nd5 18. Qh5 f5 19. Be3 Qe8 20. Qxe8 Rfxe8 21.
Bc5 Kf7 22. Rac1 a6 23. g3 Rac8 24. Bb3 Red8 25. Bd6 Nb6 26. Rc3 Be4 27. Rdc1
Rxc3 28. Rxc3 Rc8 29. Rxc8 Nxc8 30. Bc5 Bc6 31. Kf1 g6 32. Ke2 Ne7 33. Ke3 Nd5+
34. Kd4 Ke8 35. Bd1 Kd7 36. h4 Nc7 37. a4 Nd5 38. b3 Ke8 39. Bd6 Kd7 40. b4 Nb6
41. a5 Nd5 42. h5 Ke8 43. Be2 Kd7 44. h6 Ke8 45. g4 Nf4 46. Bd1 Kd7 47. f3 Nd5
48. Kd3 Nf4+ 49. Ke3 Nd5+ 50. Kf2 Nc3 51. Bc2 Bd5 52. Bd3 Bc6 53. Kg3 Nd5 54.
Be2 Nc3 55. Bd3 Nd5 56. Bc5 Ke8 57. Bc4 Kf7 58. Kh4 Nc3 59. gxf5 gxf5 60. f4
Bf3 61. Bb3 Be2 62. Be3 Ne4 63. Bc2 Bf3 64. Bd3 Nc3 65. Bd2 Nb5 66. Bc4 Nc7 67.
Kg5 Nd5 68. b5 axb5 69. Bxb5 Ne7 70. Be3 Nc6 71. Bb6 Nb4 72. Bf1 Nd5 73. Bd4
Nb4 74. Bc3 Na6 75. Bd4 Nc7 76. Bd3 Nd5 77. Bb6 Ne7 78. Bb5 Ng6 79. Bd8 Bd1 80.
Bf6 Bf3 81. Bd8 Bd1 82. Bd7 Be2 83. Bb6 Bf3 84. Bc5 Be2 85. Ba4 Bf3 86. Bb5 Nh8
87. Kh4 Bd5 88. Be2 Kg8 89. Kg5 Nf7+ 90. Kh5 Nd8 91. Bb6 Nf7 92. Bc7 Kh8 93.
Bd6 Kg8 94. Be7 Bc6 95. Bc4 Bd7 96. Bb3 Nh8 97. Kg5 Kf7 98. Bf6 Ng6 99. Bd1 Be8
100. Bf3 Bb5 101. Bxb7 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.9"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Piccoli, Lucas Fonseca"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "1804"]
[BlackElo "2225"]
[PlyCount "80"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 a5 5. Bg2 d5 6. a3 Bxd2+ 7. Nxd2 O-O 8.
Ngf3 b6 9. O-O Bb7 10. Ne5 Nbd7 11. Rc1 Nxe5 12. dxe5 Nd7 13. cxd5 exd5 14. Qc2
c5 15. Nf3 Qe7 16. Rfd1 Rab8 17. Qf5 g6 18. Qf4 d4 19. Re1 Rfe8 20. b4 axb4 21.
axb4 Bxf3 22. exf3 Nxe5 23. Bf1 Qd6 24. Bb5 Re6 25. Re4 Rb7 26. Kg2 Kg7 27. h4
h5 28. Rce1 Rbe7 29. Qc1 Qd5 30. Qg5 f5 31. Rf4 Rf7 32. Ra1 c4 33. Ba6 d3 34.
Bc8 Ref6 35. g4 hxg4 36. h5 Nxf3 37. h6+ Kh7 38. Rxf3 Qxf3+ 39. Kg1 g3 40. fxg3
f4 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.10"]
[White "Vasquez Vargas, Henry Richard"]
[Black "Nascimento, Nicolas Daniel Trin"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2216"]
[BlackElo "1797"]
[PlyCount "121"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 Nf6 2. Nc3 d5 3. Bf4 c6 4. e3 e6 5. Bd3 Nbd7 6. Nf3 a6 7. O-O c5 8. dxc5
Nxc5 9. a3 Be7 10. b4 Nxd3 11. cxd3 O-O 12. e4 a5 13. b5 a4 14. e5 Nd7 15. Qd2
Nc5 16. Nd4 f6 17. Rfe1 f5 18. Be3 f4 19. Bxf4 Nxd3 20. Qxd3 Rxf4 21. Nce2 Rf7
22. f4 Bc5 23. Kh1 Bd7 24. f5 Qe7 25. Rad1 Raf8 26. g4 Bc8 27. Nf4 Bxd4 28.
Qxd4 Qxa3 29. Rd3 Qe7 30. Qxa4 Qh4 31. Ng2 Qf2 32. Qf4 Qxf4 33. Nxf4 exf5 34.
e6 Re7 35. gxf5 Rxf5 36. Nxd5 Rxe6 37. Rxe6 Bxe6 38. Ne7+ Kf7 39. Nxf5 Bxf5 40.
Rc3 h5 41. b6 Be4+ 42. Kg1 Ke6 43. Kf2 g6 44. Ke3 Bd5 45. Kd4 Kd6 46. Rc5 Bf3
47. Rg5 Kc6 48. Rxg6+ Kb5 49. h4 Be2 50. Ke3 Bd1 51. Rh6 Kc5 52. Kf4 Kb5 53.
Kg5 Kc5 54. Re6 Bg4 55. Rf6 Kb5 56. Kg6 Kc5 57. Kf7 Kb5 58. Ke7 Kc5 59. Kd8 Kb5
60. Kc7 Ka6 61. Rf1 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.11"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Soriano Quispe, Ivan Excender"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1762"]
[BlackElo "2214"]
[PlyCount "88"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. Nbd2 Bg7 8. O-O
O-O 9. Re1 Re8 10. Nf1 b5 11. Bc2 Bb7 12. Ng3 d5 13. a4 Qd7 14. Bd2 h6 15. h3
Kh7 16. h4 d4 17. h5 Rad8 18. hxg6+ fxg6 19. axb5 axb5 20. Nh2 Rf8 21. Rf1 Qd6
22. Kh1 Nd7 23. Qc1 dxc3 24. bxc3 Nc5 25. Qb2 Nxd3 26. Bxd3 Qxd3 27. Rad1 Qc4
28. Ng4 Qe6 29. Ne3 Na5 30. c4 Nxc4 31. Nxc4 Qxc4 32. Rc1 Qe6 33. Rxc7 Rd7 34.
Rxd7 Qxd7 35. Bc3 h5 36. Bxe5 h4 37. Bxg7 Qxg7 38. Qxg7+ Kxg7 39. Ne2 Bxe4 40.
Nc3 Bc6 41. Kg1 b4 42. Na2 b3 43. Nb4 Be4 44. f3 b2 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.12"]
[White "Ibarra, Juan Martin"]
[Black "Errazola, Mauricio"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2213"]
[BlackElo "1725"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. Nf3 Nf6 2. b3 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Bb2 O-O 7. c4 d6 8. d4
Nbd7 9. Nc3 e5 10. dxe5 Nxe5 11. Nxe5 Bxg2 12. Nxf7 Rxf7 13. Kxg2 Qd7 14. Qd3
Re8 15. e4 Ng4 16. f3 Ne5 17. Qe2 Qe6 18. Rae1 h5 19. Nd5 Nd3 20. Qxd3 Bxb2 21.
Nf4 Qf6 22. e5 dxe5 23. Qxg6+ Qxg6 24. Nxg6 Kg7 25. Nf4 Kh6 26. Re2 Rd8 27. Ne6
Re8 28. Nxc7 Rxc7 29. Rxb2 e4 30. fxe4 Rxe4 31. Rf6+ Kg7 32. Rf4 Re1 33. Rd2
Rce7 34. Rd5 Ra1 35. Rf2 h4 36. gxh4 Kh6 37. Rd6+ Kh5 38. Rd5+ Kh6 39. Rg5 Re8
40. Kh3 a5 41. Rf6+ Kh7 42. Rf7+ Kh8 43. Rf2 Kh7 44. a4 Rb1 45. Rg3 Rd1 46. Rf5
Kh6 47. c5 Rd6 48. cxb6 Rxb6 49. Rxa5 Rb7 50. Ra6+ Kh7 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.13"]
[White "Nascimento, Kaio Vinicius Da Tr"]
[Black "Labussiere, Yago"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1310"]
[BlackElo "2185"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. f4 Na6 7. Nf3 e5 8. fxe5
dxe5 9. d5 Nc5 10. Qc2 a5 11. Be3 Qe7 12. O-O-O Ng4 13. Bg1 Bh6+ 14. Kb1 Ne3
15. Bxe3 Bxe3 16. d6 Qe6 17. Nd5 Bd4 18. Nxc7 Qxd6 19. Nxa8 Be6 20. Nc7 Qxc7
21. Nxd4 exd4 22. Rxd4 Qe5 23. Rhd1 Qxh2 24. Bf3 Qe5 25. Rd8 g5 26. g4 Rxd8 27.
Rxd8+ Kg7 28. b3 Qf6 29. Qb2 Qxb2+ 30. Kxb2 Kf6 31. Rg8 h6 32. Rh8 Ke5 33. Rxh6
Nxe4 34. Rh5 Nf6 35. Rh6 Ne4 36. Rh5 Nf6 37. Rxg5+ Kf4 38. Rxa5 Kxf3 39. g5 Ne4
40. Rb5 Bc8 41. Re5 Kf4 42. Re8 Bg4 43. Re7 Nxg5 44. Rxb7 f5 45. c5 Ke5 46. Rg7
Ne6 47. Rg8 Nxc5 48. Kc3 Bf3 49. b4 Na4+ 50. Kd3 Be4+ 1/2-1/2
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.14"]
[White "De Siqueira, Luigy Lira"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2179"]
[BlackElo "1287"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. c3 a6 7. Be2 Be6 8. O-O
Nc6 9. dxc5 Bxc5 10. Nb3 Ba7 11. Bf4 O-O 12. Qd3 Re8 13. Rad1 Qc8 14. Nfd4 Nxd4
15. Nxd4 Bxd4 16. Qxd4 Bf5 17. Bd3 Bxd3 18. Qxd3 Qc4 19. Qxc4 dxc4 20. Rfe1
Rxe1+ 21. Rxe1 Re8 22. Rd1 h6 23. Kf1 g5 24. Bg3 Ne4 25. Rd5 Nf6 26. Rd4 b5 27.
f3 Re6 28. Bf2 Kf8 29. Rd8+ Ke7 30. Ra8 Nd5 31. Bc5+ Kf6 32. g3 Kg6 33. Kf2 Nf6
34. Bd4 Kg7 35. Rb8 Kg6 36. Rc8 Re8 37. Rc6 Re6 38. Rxe6 fxe6 39. Bxf6 Kxf6 40.
Ke3 Ke5 41. g4 a5 42. h3 Kd5 43. f4 gxf4+ 44. Kxf4 e5+ 45. Ke3 Ke6 46. Ke4 Kf6
47. h4 Ke6 48. g5 h5 49. g6 Kf6 50. g7 Kxg7 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.15"]
[White "Andriska, Matheus Jose Amante"]
[Black "Ribeiro, Matheus Mendes Domi"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1261"]
[BlackElo "2150"]
[PlyCount "88"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. e4 c5 2. Nc3 e6 3. Bc4 Nc6 4. Nge2 Nf6 5. d3 d5 6. exd5 exd5 7. Bb3 Be7 8.
O-O O-O 9. Nf4 d4 10. Ncd5 Nxd5 11. Nxd5 Bd6 12. Bf4 Be6 13. Bxd6 Qxd6 14. Qf3
Ne5 15. Qe4 f5 16. Ne7+ Kh8 17. Qh4 Bxb3 18. axb3 Rf7 19. f4 Qxe7 20. Qxe7 Rxe7
21. fxe5 Rxe5 22. Rf2 g6 23. g3 Kg7 24. Kg2 a5 25. Raf1 Rae8 26. Ra1 b6 27.
Raf1 Re1 28. Rxe1 Rxe1 29. Kf3 Rb1 30. Kf4 Kf6 31. g4 g5+ 32. Kg3 f4+ 33. Kf3
Rxb2 34. Ke4 Ke6 35. Re2 b5 36. Kf3+ Kd6 37. Ke4 a4 38. bxa4 bxa4 39. Kf5 a3
40. Kxg5 a2 41. Re1 Rb1 42. Rxb1 axb1=Q 43. Kxf4 Qxc2 44. Ke4 c4 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.16"]
[White "Castro Salgado, Pablo"]
[Black "Reimberg, Arthur Bernardo"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2150"]
[PlyCount "69"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 a6 6. c5 b6 7. b4 Bb7 8. e3 Nbd7
9. Bd3 O-O 10. O-O Re8 11. Qc2 Nf8 12. Ne5 c6 13. Na4 N8d7 14. Nxd7 Nxd7 15.
Bxh7+ Kh8 16. Bd3 b5 17. Qe2 g6 18. Nb6 Nxb6 19. cxb6 Bf6 20. Qg4 Kg7 21. Bc7
Qe7 22. Qf4 e5 23. Bxe5 Bxe5 24. dxe5 Qxe5 25. Qxe5+ Rxe5 26. a4 Rc8 27. Rfc1
d4 28. axb5 cxb5 29. Rxc8 Bxc8 30. Rc1 Re8 31. exd4 Rd8 32. f3 Be6 33. b7 Rb8
34. Rc7 Kf8 35. d5 1-0
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.17"]
[White "De Oliveira, Joao Pedro Almeida"]
[Black "Tomiello, Mateus Costamilan"]
[Result "0-1"]
[ECO "B12"]
[BlackElo "2145"]
[PlyCount "46"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. e4 c6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Be3 cxd4 6. cxd4 Bf5 7. Bd3 Bxd3 8.
Qxd3 e6 9. Ne2 Nge7 10. Ng3 h5 11. h4 Ng6 12. Nd2 Be7 13. Nf3 Nxh4 14. Nxh4
Bxh4 15. Bd2 g6 16. Bc3 Be7 17. a3 Qb6 18. b4 a6 19. Ne2 Rc8 20. Rb1 Na7 21. a4
Rc4 22. Qd2 Qc6 23. Qc2 Kd7 0-1
[Event "U20 Pan-Amrican Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "1.18"]
[White "Reyes Zavaleta, Fabian Ricardo"]
[Black "De Mattos, Pedro Benedito Flor"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2122"]
[PlyCount "69"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]
1. d4 d5 2. c4 e6 3. Nf3 Be7 4. g3 Nf6 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4
Nc6 9. Qxc4 Qd5 10. Nbd2 Rb8 11. Qc3 Bb4 12. Qd3 Qh5 13. Nc4 Rd8 14. Bf4 Nd5
15. Bg5 Be7 16. Bxe7 Ndxe7 17. Rfd1 b6 18. Rac1 Bb7 19. e4 Rbc8 20. h3 Nb4 21.
Qe3 a5 22. Nfe5 Nec6 23. Nxc6 Nxc6 24. e5 Rb8 25. g4 Qh6 26. g5 Qh4 27. d5 exd5
28. Bxd5 g6 29. e6 Ba8 30. exf7+ Kf8 31. Bxc6 Bxc6 32. Qa3+ Kg7 33. Qc3+ Kf8
34. Qh8+ Kxf7 35. Ne5+ 1-0
