[Event "Magistral Osasco 2024"]
[Site "Sao Paulo"]
[Date "2024.03.18"]
[Round "1.1"]
[White "Valderrama Quiceno, Esteban Alb"]
[Black "Cubas, Jose Fernando"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "2428"]
[BlackElo "2417"]
[Annotator "Stockfish 16"]
[PlyCount "67"]
[EventDate "2024.03.18"]
[EventCountry "BRA"]

1. e4 e6 2. d4 d5 3.Nd2 $146 ({RR} 3. Nc3 Bb4 4. e5 c5 5. Nf3 cxd4 6. Qxd4 Nc6 7. Bb5 Qa5 8. Bd2
Bxc3 9. Bxc6+ bxc6 10. Bxc3 Qb5 11. Qg4 g6 12. Qf4 c5 13. Ng5 Qb7 14. O-O h6
15. Nf3 d4 16. Ba5 g5 17. Qg4 Qxb2 {Jacobs,B (2390)-Whiteley,A (2380) London
1987 1/2-1/2}) ({RR} 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Bg4 6. O-O Ne7 7. h3 Bh5 8.
Re1 f6 9. c4 c6 10. c5 Bc7 11. Qe2 Qd7 12. Bf5 Qd8 13. Be6 Bf7 14. Bxf7+ Kxf7
15. Qe6+ Kf8 16. Ng5 Qe8 17. Nc3 h6 {Munkhzul,T (2278)-Vyatkin,D (2362) chess.
com INT 2020 1-0 (48)}) 3... Nc6 $6 {Inaccuracy. c5 was best.} (3... c5 4. exd5
Qxd5 5. Ngf3 cxd4 6. Bc4 Qd7 7. O-O Nc6 8. Nb3) 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 a5
7. a4 b6 8. Ng5 $6 {Inaccuracy. c3 was best. C04: French Tarrasch: 3...Nc6.} (
8. c3 Na7 9. Ng5 c5 10. Qf3 {[%csl Gg5][%cal Rf3f7]} Qe7 11. Qg3 h6 12. Nf3 c4)
8... h6 9. Nxe6 $146 {[%eval 0,29]} ({Better is} 9. Nh3 $14 {[%eval 65,19]}) ({
Predecessor:} 9. Nh3 Be7 10. Nf4 Bg5 11. h4 Bxf4 12. Bxf4 Ne7 13. Qg4 Nf5 14.
Bd3 O-O 15. Nd2 f6 16. Bxf5 exf5 {1/2-1/2 (25) Ni,H (2692)-Zhang,P (2616)
Jinzhou 2009}) 9... fxe6 $11 10. Qh5+ {[#]The position is equal.} g6 $1 11.
Qxg6+ {[%mdl 64] Double Attack} Ke7 12. Bd3 $2 {[%eval -139,19] Mistake. Qh5
was best.} (12. Qh5 Bg7 13. Bb5 Bb7 14. f4 Qg8 $1 15. g4 Rf8 16. Bd2 Qf7 17.
Qh4+ Ke8 18. f5 exf5 {[%eval 56,23]} (18... h5 $11 {[%eval -4,20]} 19. f6 hxg4
20. Qxg4 Bh6)) (12. Bb5 $11 {[%eval 0,29] keeps the balance.} Bb7 13. Qg4)
12... Ndxe5 $2 {[%eval 22,20] Mistake. Qe8 was best.} (12... Qe8 $1 13. Bg5+
hxg5 14. Qxg5+ Nf6 $1 15. Qxf6+ Kd7 16. c3 Qh5 17. Nd2 Ba6 $1 18. Bxa6 Rxa6 19.
Qf3) (12... Qe8 $1 $17 {[%eval -139,19][%cal Re8g6] And now ...Qxg6 would win.}
13. Bg5+ hxg5 14. Qxg5+ Nf6 15. exf6+ (15. Qxf6+ Kd7 $17) (15. Bg6 Qd8 $17)
15... Kd7) 13. dxe5 Nxe5 14. Qh5 $6 {[%eval -70,13] Inaccuracy. Qg3 was best.}
(14. Qg3) (14. Qg3 $14 {[%eval 34,19]} Nxd3+ 15. cxd3) 14... Nxd3+ $15 15. cxd3
Bg7 $2 {[%eval 0,16] Mistake. Kd7 was best.} (15... Kd7 $1) (15... Kd7 $1 $17 {
[%eval -94,17]}) 16. O-O $11 Qd6 $132 {[%mdl 2048] Black is not holding back}
17. Re1 Bd7 $1 18. Nd2 Raf8 19. Nf3 Qb4 $6 {[%eval 19,12] Inaccuracy. Kd8 was
best.} (19... Kd8 20. d4 Rhg8 21. Ne5 Kc8 22. Qd1 Rf5 23. Nxd7 Qxd7 24. g3 h5
25. b4 axb4 26. a5) (19... Kd8 $17 {[%eval -77,14]}) 20. Qg6 $4 {[%eval -114,
11] Blunder. Bd2 was best.} (20. Bd2 Qxb2 21. Rab1 Qa3 22. Qh4+ Bf6 23. Qg3 Rc8
$1 24. Nh4 Rhg8 $1 25. Nf5+ Kf8 26. Bxh6+ Kf7) (20. Bd2 $11 {[%eval 19,12]}
Qxb2 21. Rab1) 20... Bf6 $4 {[%eval 82,17] [#] Blunder. Rhg8 was best.} (20...
Rhg8) ({Inferior is} 20... Bxb2 21. Rb1 $11) (20... Rhg8 $17 {[%eval -114,11]}
21. Bxh6 Bxh6 22. Qxh6 Qg4) 21. d4 $2 {[%eval -58,20] Mistake. Bd2 was best.} (
21. Bd2 $1) (21. Bd2 $1 $16 {[%eval 82,17][%cal Rd2b4]} Qd6 22. d4) 21... Rhg8
$4 {[%eval 140,17] Blunder. Bxd4 was best.} (21... Bxd4 22. Bd2 $1) (21... Bxd4
$15 {[%eval -58,20] stays ahead.} 22. Re2 Bf6) 22. Qh7+ $16 Rg7 23. Qd3 {
Black must now prevent b3.} Rg4 {[%eval 180,17]} (23... Bg5 $16 {[%eval 117,19]
}) 24. b3 Rxd4 {[#]} 25. Qg6 $4 {[%eval -411,18] Blunder. Qc2 was best.} (25.
Qc2 $1 Qd6) (25. Qc2 $16 {[%eval 142,22] Hoping for Ba3.} Qd6 26. Qh7+ (26.
Bxh6 Rh8 $14) 26... Rf7 27. Qxh6) 25... Qxb3 $4 {[%eval 565,18] Blunder. Rg4
was best.} (25... Rg4 26. Qb1 Qc3 27. Kf1 {[%eval -461,18]} (27. h3 $142 {
[%eval -324,15]} Rgg8 28. Kf1 Qxa1 29. Qxa1 Bxa1 30. Ba3+ {[%mdl 64]
Discovered Attack} c5 31. Rxa1) 27... Qxa1 28. Qxa1 Bxa1 29. Ba3+ c5 30. Rxa1
Kd6 31. Bb2 d4 32. Re1) (25... Rg4 $19 {[%eval -411,18] and life is good for
Black.} 26. Qh7+ Rf7) 26. Bxh6 $18 {White is clearly winning.} Rf7 {intending .
..Qd3.} 27. Ng5 Bxg5 28. Bxg5+ Kf8 29. Qh6+ Rg7 30. Qf6+ Kg8 31. Qxd4 Rxg5 32.
Qf4 $6 {Inaccuracy. Qf6 was best.} (32. Qf6 Rg7 33. Qd8+ Kh7 34. Re3 Qc4 35.
Rh3+ Kg6 36. Qh8 Qd4 {[%cal Rd4a1]} 37. Re1 e5 38. Rg3+ Bg4) 32... Rg7 33. Qxc7
{Threatens to win with Qd8+.} Qh3 $6 {[%csl Gg7][%cal Rh3g2] Inaccuracy. Qf3
was best.} (33... Qf3 {[%csl Gg7][%cal Rf3g2]} 34. Qd8+ Kh7 {[%csl Gg7][%cal
Rf3g2]} 35. Qh4+ Kg8 {[%csl Gg7][%cal Rf3g2]} 36. g3 d4 37. Qe4 Rf7 38. Qxf3
Rxf3 39. Re4 e5 40. Rxe5) 34. g3 {Precisão Lichess: Brancas 77% Pretas 60%
Precisão Chessbase: Brancas 45%, Pretas 42%. Precisão Chess.com: Brancas 77.
7% Pretas 77.5%} 1-0

[Event "Magistral Osasco 2024"]
[Site "Sao Paulo"]
[Date "2024.03.18"]
[Round "1.2"]
[White "Do Valle Cardoso, Lucas"]
[Black "Molina, Roberto Junio Brito"]
[Result "1/2-1/2"]
[ECO "C51"]
[WhiteElo "2406"]
[BlackElo "2376"]
[Annotator "Stockfish 16"]
[PlyCount "108"]
[EventDate "2024.03.18"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 ({RR} 3... Nf6 4. d3 Be7 5. O-O O-O 6. Nbd2 d6 7. c3 a6 8. Bb3 b5 9. Re1 Bb7 10. Nf1
Qd7 11. Ng3 d5 12. Bg5 dxe4 13. dxe4 Qxd1 14. Raxd1 Rfd8 15. Nf5 Kf8 16. Nxe7
Kxe7 17. Bd5 h6 18. Bh4 {Zhigalko,S (2572)-Golubka,P (2452) lichess.org INT
2021 1-0}) 4. b4 $146 {Inaccuracy. O-O was best.} (4. O-O Nf6 5. d3 a6 6. c3 d6
7. h3 Ba7 8. a4 O-O) ({RR} 4. d3 d6 5. Nc3 Bg4 6. h3 Bh5 7. g4 Bg6 8. Bd2 Nf6
9. Bg5 O-O 10. Nd5 h6 11. Nxf6+ gxf6 12. Be3 Bxe3 13. fxe3 h5 14. Rg1 Kh7 15.
Qe2 Kh6 16. gxh5 Bxh5 17. Qg2 Rg8 18. Qf2 Qd7 {Detjen,M (890)-Rennkamp,D (1012)
Hamburg 2017 0-1 (41)}) 4... Bxb4 5. c3 Be7 6. d4 Na5 7. Be2 exd4 8. Qxd4 Nf6 {
C51: Evans Gambit: Declined and Accepted without 5...Ba5.} 9. e5 $1 {[%cal
Re5f6]} Nc6 10. Qh4 Nd5 11. Qg3 $1 {[%cal Rg3g7]} O-O 12. Bh6 {[%csl Gh6][%cal
Rg3g7] [#]} g6 13. Bxf8 {[%eval -17,19]} (13. O-O $14 {[%eval 41,16]}) 13...
Bxf8 14. Bc4 Nb6 15. Bb3 d5 $146 ({Predecessor:} 15... a5 16. O-O a4 17. Bc2
Nd5 18. Be4 Nce7 19. Bxd5 Nxd5 20. c4 Nb4 21. Nc3 b6 {1/2-1/2 (91) Acosta
Cubides,J (2011)-Corredor Castellanos,C (1924) Colombia 2015}) 16. O-O Ne7 17.
h4 Nf5 18. Qf4 Qe7 19. g3 {[%eval 0,21]} ({Better is} 19. Nbd2 $16 {[%eval 89,
18]}) 19... Bh6 $11 20. Ng5 c6 21. Nd2 Be6 $6 {[%eval 90,21] Inaccuracy. Ng7
was best.} (21... Ng7) (21... Ng7 $11 {[%eval 21,21] remains equal.}) 22. Ndf3
$16 Nd7 23. Rfe1 Nc5 {next ...Nd3 is good for Black.} 24. Bc2 Bd7 25. a4 b6 26.
c4 $6 {[%eval 46,21] Inaccuracy. a5 was best.} (26. a5 b5 27. e6 fxe6 28. Ne5
Bg7 29. Qb4 Bf8 30. Re2 Qg7 {[#]} 31. Qg4 $1 Bd6 32. Rae1 Bxe5) (26. a5 $16 {
[%eval 124,21]}) 26... Ne6 $1 $14 {[%cal Re6f4]} 27. Qc1 $6 {[%eval -68,20]
Inaccuracy. Qd2 was best.} (27. Qd2 $1 Bxg5) (27. Qd2 $1 $14 {[%eval 47,22]})
27... Nfd4 {[%eval -4,21]} (27... Bxg5 $1 $15 {[%eval -68,20]} 28. hxg5 Nfd4
29. Nxd4 Nxd4) 28. Nxd4 $11 Nxd4 29. Qd1 (29. Qb2 {keeps more tension.} Nxc2
30. Qxc2 Bxg5 31. hxg5 Qc5 32. Qd2) 29... Nxc2 (29... Qc5 {is more complex.}
30. Rc1 Nxc2 31. Qxc2 Bxg5 32. hxg5 d4) 30. Qxc2 Bxg5 31. hxg5 Qxg5 {The
position is equal.} 32. a5 bxa5 33. cxd5 cxd5 34. Rxa5 Be6 35. Qc1 Qg4 36. Qa3
h5 37. Ra4 Qg5 38. Qe3 Qf5 39. Rxa7 Rxa7 40. Qxa7 {[%mdl 4096] Endgame KQR-KQB}
h4 41. Qe3 hxg3 42. fxg3 Qg4 43. Qf4 {Threatening Qxg4.} Qxf4 44. gxf4 {KR-KB}
g5 45. fxg5 Kg7 46. Kf2 {Black must now prevent Ke3.} Kg6 47. Ke3 Kxg5 48. Rg1+
Kf5 49. Kd4 {And now Rf1+ would win.} Kf4 50. Rf1+ Kg5 51. Rf2 Kg4 52. Kc5 {
Hoping for Rf1.} Kg5 53. Kd6 {Kc5 is the strong threat.} Kg4 54. Rf1 {aiming
for Kc5.} Kg3 {Precisão Lichess: Brancas 95% Pretas 96%  Precisão Chess.com:
Brancas 96.3% Pretas 96.3%.  Precisão Chessbase: Brancas 81%, Pretas 78%.}
1/2-1/2

[Event "Magistral Osasco 2024"]
[Site "Sao Paulo"]
[Date "2024.03.18"]
[Round "1.3"]
[White "Di Berardino, Diego Rafael"]
[Black "Fier, Alexandr"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2497"]
[BlackElo "2561"]
[Annotator "Stockfish 16"]
[PlyCount "64"]
[EventDate "2024.03.18"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 b5 6. e4 {E20: Nimzo-Indian:
4 g3 and 4 f3.} O-O 7. e5 Ne8 8. f4 d6 9. Nf3 exd5 10. cxd5 Bb7 ({RR} 10... c4
11. a4 Nd7 12. Be2 Qb6 13. Bd2 Nc7 14. Nxb5 Nxd5 15. Bxb4 Nxb4 16. Nxd6 Ba6 $1
17. Qd2 Nc5 18. a5 Qb8 19. O-O Nb3 20. Qe3 $1 Nxa1 21. Ng5 $1 h6 $1 22. Nf5 $1
Qc7 $2 {[%eval 332,20] [#]} (22... Qd8 $16 {[%eval 93,18]} 23. Ne4 Bc8 24.
Nxh6+ Kh8 25. Nxf7+ Rxf7) 23. Ne4 $2 {[%eval 30,21]} (23. Nxh6+ $1 $18 {
[%eval 332,20][%mdl 512]} gxh6 24. Qg3) 23... f6 24. Qg3 $1 Kh8 $1 25. exf6 {
Firouzja,A (2759)-So,W (2772) chess24.com INT 2021 1-0 (52)}) ({RR} 10... Bg4 {
[%eval 76,18] 10...c4 0.18} 11. Bxb5 Nc7 {[%eval 169,19]} ({Black should try} 
11... dxe5 $1 $14 {[%eval 31,17]} 12. fxe5 Nc7) 12. Bc4 {[%eval 32,21]} (12.
Be2 $18 {[%eval 169,19]}) 12... dxe5 13. fxe5 $2 {[%eval -464,20][%mdl 8192]} (
13. O-O $1 $14 {[%eval 46,19] keeps the upper hand.}) 13... Nd7 $2 {[%eval -26,
21]} (13... Bxf3 $19 {[%eval -464,20]} 14. Qxf3 Qh4+ {[%mdl 64] Double Attack}
15. Kd1 Qxc4) 14. e6 $2 {[%eval -275,19]} (14. Bg5 $11 {[%eval -26,21] and
White stays safe.} Qxg5 15. Nxg5 Bxd1 16. Rxd1) 14... Nb6 {[%eval -116,20]} (
14... Bxf3 $19 {[%eval -275,19] is more deadly.} 15. Qxf3 fxe6 {[%mdl 64]
Discovered Attack}) 15. Be2 Ncxd5 16. exf7+ Rxf7 17. Bd2 $2 {[%eval -492,21]
[%mdl 8192]} (17. O-O $17 {[%eval -103,19]}) 17... Bxc3 18. bxc3 Bxf3 19. Bxf3
Qh4+ 20. Kf1 Re8 $2 {[%eval -131,18]} (20... Raf8 $19 {[%eval -482,19]} 21. Kg1
Rxf3 22. gxf3 Nc4) 21. Qb3 $2 {[%eval -1025,17][%mdl 8192]} (21. Kg1 $17 {
[%eval -131,18]}) 21... Nc4 22. Be1 Rxf3+ 23. gxf3 Rxe1+ 24. Rxe1 Nd2+ 25. Kg2
{Suder,J (2244)-Abdisalimov,A (2482) chess.com INT 2023 0-1}) ({RR} 10... Nc7
11. Bd3 f5 {[%eval 87,17]} (11... c4 $1 $11 {[%eval -12,17]} 12. Be4 f5 13.
exf6 Qxf6) 12. O-O {[%eval 16,18]} (12. a4 $1 $16 {[%eval 87,17]}) 12... c4 13.
Bc2 Bb7 14. Kh1 Nba6 15. a4 Bxc3 $1 16. bxc3 b4 17. Nd4 g6 18. cxb4 dxe5 19.
Nxf5 gxf5 20. d6 {[%eval 0,20]} (20. Ra3 $1 $16 {[%eval 84,17]}) 20... Ne6 {
[%eval 77,19]} (20... Nxb4 $11 {[%eval 0,20] keeps the balance.} 21. fxe5 Nxc2
22. Qxc2 Ne6 23. Qxc4 Qc8) 21. fxe5 {[%eval -42,18]} ({White has to play} 21.
Ra3 $1 $16 {[%eval 77,19]}) 21... Qh4 22. Bxf5 Rxf5 23. Rxf5 Kh8 $2 {[%eval
173,17]} (23... Nxb4 $15 {[%eval -68,18]} 24. Qe2 Nd3) 24. d7 $1 Rd8 25. Kg1 $2
{[%eval -47,20] Fier,A (2572)-Adams,M (2754) Caleta 2014 1/2-1/2 (32)} ({
White must play} 25. Qf1 $1 $16 {[%eval 157,18]} Rg8 26. Ra2)) 11. Bxb5 $146 ({
RR} 11. Bd3 dxe5 12. fxe5 Qxd5 13. O-O Bxc3 $1 14. bxc3 c4 $1 15. Bc2 Nc7 {
[%eval 164,20]} ({Better is} 15... Qxd1 $14 {[%eval 35,16]} 16. Rxd1 Nc7) 16.
Qe1 Ne6 {[%eval 228,17]} (16... Nd7 $16 {[%eval 149,18]}) 17. Qh4 {[%eval 115,
18]} ({White should play} 17. Ba3 $18 {[%eval 228,17]}) 17... g6 {[%eval 182,
19]} (17... Qc5+ $16 {[%eval 115,18] was called for.} 18. Kh1 g6) 18. Ba3 Qd8
19. Bxf8 Qxh4 20. Nxh4 Nxf8 {[%eval 261,15]} (20... Kxf8 {[%eval 171,10] was
worth a try.} 21. Rad1 Nc6) 21. Rfb1 Bc6 22. a4 bxa4 23. Bxa4 Nfd7 24. Nf3 Be4
25. Rd1 Bd3 {Hammer,J (2637)-Arvola,B (2497) Larvik NOR 2019 1-0 (63)}) ({RR} 
11. Bd3 dxe5 12. fxe5 Qxd5 13. O-O Bxc3 $1 14. bxc3 c4 15. Bc2 Nc7 {[%eval 174,
20]} (15... Qxd1 $14 {[%eval 70,18]} 16. Rxd1 Nc7) 16. Qe1 Ne6 {[%eval 243,16]}
(16... Nd7 $142 {[%eval 164,19]}) 17. Qh4 {[%eval 139,19]} (17. Ba3 $18 {
[%eval 243,16]}) 17... g6 {[%eval 233,19]} (17... Qc5+ $16 {[%eval 139,19]} 18.
Kh1 g6) 18. Ba3 Qd8 19. Bxf8 Qxh4 20. Nxh4 Nxf8 21. Rfb1 Bc6 22. a4 bxa4 23.
Bxa4 Nfd7 24. Nf3 Be4 25. Rd1 Bd3 {Hammer,J (2637)-Arvola,B (2497) Larvik NOR
2019 1-0 (63)}) ({RR} 11. Bd3 dxe5 12. fxe5 Qxd5 13. O-O Bxc3 $1 14. bxc3 c4
15. Bc2 Nc7 {[%eval 171,18]} (15... Qxd1 $14 {[%eval 58,19]} 16. Rxd1 Nc7) 16.
Qe1 Ne6 {[%eval 229,19]} (16... Nd7 $16 {[%eval 158,18]}) 17. Qh4 {[%csl Gc2]
[%cal Rh4h7]} g6 {[%eval 248,18]} (17... Qc5+ $16 {[%eval 157,19]} 18. Kh1 g6)
18. Ba3 Qd8 19. Bxf8 Qxh4 20. Nxh4 Nxf8 21. Rfb1 Bc6 22. a4 bxa4 23. Bxa4 Nfd7
24. Nf3 Be4 25. Rd1 Bd3 {Hammer,J (2637)-Arvola,B (2497) Larvik 2019 1-0 (63)})
11... dxe5 12. Nxe5 $146 {[%eval -1,22] Inaccuracy. fxe5 was best.} (12. fxe5
Qxd5 13. O-O Bxc3 14. bxc3 Nc7 15. Ba4 Ne6 16. Be3 Qe4) (12. fxe5 $14 {[%eval
67,21]} Nc7 13. Bc4 Nxd5 14. Bg5 Nxc3 15. Qxd8 (15. Bxd8 $2 {loses.} Nxd1+ 16.
Kxd1 Rxd8+ $19) 15... Rxd8 16. Bxd8 Na4+ 17. Kf2 Nxb2 18. Rhc1) ({Predecessor:
} 12. fxe5 Nc7 13. Bc4 Nxd5 14. O-O Nxc3 15. bxc3 Qxd1 16. Rxd1 Bxc3 17. Rb1
Bxf3 18. gxf3 {0-1 (29) De Santiago Gordo,A (1761)-Saguillo Gonzalez,O (2124)
Salou 2020}) 12... Nc7 $11 13. Bc4 Bxd5 {White must now prevent ...f6.} 14. O-O
(14. Bxd5 Qxd5 15. O-O Bxc3 16. bxc3 f6 17. Ng4 Rd8 18. Ne3 Qxd1) 14... Bxc4
15. Nxc4 Qd4+ 16. Qxd4 cxd4 17. Ne4 Re8 (17... Nc6 18. Bd2 Bxd2 19. Nexd2 Rfd8
20. Rad1 Rab8 21. Nb3 h5 22. Rd2) 18. Nf2 Nba6 19. Nd3 Bf8 20. Bd2 Nd5 21. Rfe1
Nc5 22. Nxc5 Bxc5 23. Kf1 Bb4 24. Rxe8+ Rxe8 25. Bxb4 Nxb4 $14 {[%mdl 4096]
Endgame KRN-KRN} 26. Rd1 (26. a3 $5 {[%cal Ra3b4]} Nc2 27. Rd1 $11) 26... d3
27. g3 (27. a3 {seems wilder.} Re4 28. Na5 Rxf4+ 29. Ke1 Re4+ 30. Kf2) 27...
Rc8 {The position is equal.} 28. Ne5 Rc2 29. Nxd3 Nxd3 30. Rxd3 {[%cal Rd3d8]}
g6 31. Kg1 Rxb2 32. Ra3 Rb7 {Precisão Lichess: Brancas 97% Pretas 98% 
Precisão Chess.com: Brancas 97.2% Pretas 97.6%.  Precisão Chessbase: Brancas
83%, Pretas 79%.} 1/2-1/2

[Event "Magistral Osasco 2024"]
[Site "Sao Paulo"]
[Date "2024.03.18"]
[Round "1.4"]
[White "De Carvalho, Vitor Augusto Ponci"]
[Black "Bobadilla Viera, Jorge Samuel"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2134"]
[BlackElo "2397"]
[Annotator "Stockfish 16"]
[PlyCount "122"]
[EventDate "2024.03.18"]
[EventCountry "BRA"]

1. e4 e6 2. d4 d5 3. exd5 $146 ({RR} 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6.
Bb5 cxd4 7. Qe2+ Qe7 8. Nxd4 Qxe2+ 9. Kxe2 Bd7 10. N2f3 Bd6 11. Rd1 Nge7 12.
Be3 a6 13. Bd3 Nb4 14. Kf1 Rc8 15. Ne1 O-O 16. c3 Nxd3 17. Nxd3 Ng6 {Jaracz,P 
(2490)-Gdanski,J (2535) Plock 2000 1-0 (84)}) 3... exd5 4. Bd3 Nc6 5. c3 Bd6 6.
Ne2 Nf6 7. Bf4 Ne7 {C01: French: Exchange Variation.} 8. Qc2 Bxf4 9. Nxf4 Qd6
10. Ne2 $146 ({Predecessor:} 10. g3 Bg4 11. Nd2 O-O-O 12. f3 Bd7 13. O-O-O g6
14. Ng2 h5 15. Ne3 Rde8 16. Rde1 {0-1 (52) Schmidt,K-Umpfenbach,C (2035)
Oberhof 1999}) 10... g6 (10... b6 11. Nd2 c5 12. b3 O-O 13. O-O Ng6 14. Rfe1
Bd7 15. dxc5) 11. Nd2 Bf5 12. h3 (12. O-O O-O 13. Ng3 Bxd3 14. Qxd3 Rae8 15.
Rae1 Nc8 16. Nf3 Qb6) 12... h5 (12... Bxd3 13. Qxd3 Nf5 14. O-O O-O 15. Rae1
Rae8 16. Ng3 Nxg3 17. Qxg3) 13. Nf3 (13. O-O O-O 14. Rae1 Bxd3 15. Qxd3 Nf5 16.
Qf3 Kg7 17. Nc1 Rae8) 13... Bxd3 (13... O-O 14. Ne5 Bxd3 15. Qxd3 Rae8 16. O-O
Kg7 17. Rae1 c5 18. Qf3) 14. Qxd3 Ne4 (14... O-O 15. Ng3 Qe6+ 16. Ne2 Nf5 17.
O-O Qd6 18. Rae1 Rae8 19. Ne5) 15. Nd2 (15. O-O O-O 16. c4 Rae8 17. c5 Qd8 18.
Nc3 Nf5 19. Rfe1 Nxc3) 15... Nxd2 16. Qxd2 O-O-O (16... Kf8 17. O-O Kg7 18. Nf4
Rhe8 19. Nd3 Nf5 20. Rfe1 b6 21. Qf4) 17. O-O-O (17. O-O Nf5 18. Rae1 Rhe8 19.
Nf4 Re4 20. Nd3 Rde8 21. Nc5 R4e7) 17... Qa6 (17... Nf5 18. Rhe1 Qc6 19. Nf4
Nd6 20. Nd3 Rhe8 21. Ne5 Qa4 22. b3) 18. Kb1 (18. b3 Nf5 19. Nf4 Nh4 20. g3 Nf3
21. Qd3 Qxa2 22. Qxf3 Rhe8 $1) 18... Nf5 (18... Qf6 19. Nf4 Nf5 20. Nd3 Nd6 21.
Rhe1 Rde8 22. Qf4 Qxf4 23. Nxf4) 19. Rhe1 Nd6 20. Nc1 Rhe8 21. Rxe8 Rxe8 22.
Re1 Qb5 23. Rxe8+ Qxe8 24. Qe2 Qe4+ 25. Qxe4 dxe4 $11 {[%mdl 4096] Endgame
KN-KN} 26. Kc2 g5 27. f3 exf3 28. gxf3 Kd7 29. Kd3 Ke6 30. b3 f5 31. c4 Ne8 32.
Ne2 Nf6 33. d5+ Ke5 34. Nd4 (34. f4+ $5 gxf4 35. Nd4 $15) 34... g4 35. fxg4
fxg4 36. hxg4 Nxg4 37. Ne6 h4 {Strongly threatening ...h3.} 38. Ke2 $1 h3 {
[#] Hoping for ...h2.The position is equal.} 39. Kf3 c6 40. Nd8 h2 41. Kg2 cxd5
42. cxd5 Kxd5 43. Nxb7 Kd4 44. Na5 Ne5 45. Kxh2 Kc5 (45... Kc3 46. a3 Kb2 47.
b4 Kxa3 48. b5 Ka4 (48... Kb4 $5 49. Nc6+ $8 {[%mdl 64] Double Attack} Kxb5 50.
Nxa7+ Kc5 $11) 49. Nc6 Kxb5 50. Nxa7+) 46. Kg3 Kb4 (46... Kb5 47. Nc4 Nxc4 48.
bxc4+ Kxc4 49. Kf2 a5 50. Ke2 Kc3 51. a3) 47. Kf4 Ng6+ 48. Kg5 Kxa5 49. Kxg6 {
[#] Black must now prevent a3. KPP-KP} Kb4 50. Kf5 Ka3 {( -> ...a5)} 51. Ke4
Kxa2 {KP-KP} 52. b4 Kb3 53. Kd3 (53. b5 Kc4 54. Ke3 Kxb5 55. Kd3 Kb4 56. Kc2
Kc4 57. Kb2 Kd5) 53... a6 {[%cal Ba7a6,Ba6a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 54.
Kd2 Kxb4 {KP-K} 55. Kc2 Ka3 56. Kb1 (56. Kc3) 56... a5 57. Ka1 a4 58. Kb1 Kb3
59. Ka1 a3 60. Kb1 a2+ 61. Ka1 Ka3 {Precisão Lichess: Brancas 99% Pretas 99% 
Precisão Chess.com: Brancas 98.1% Pretas 98.3%.  Precisão Chessbase: Brancas
94%, Pretas 93%.} 1/2-1/2

[Event "Magistral Osasco 2024"]
[Site "Sao Paulo"]
[Date "2024.03.18"]
[Round "1.5"]
[White "Quintiliano, Renato R."]
[Black "Duarte Napoles, Fanny"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2483"]
[BlackElo "2203"]
[Annotator "Stockfish 16"]
[PlyCount "81"]
[EventDate "2024.03.18"]
[EventCountry "BRA"]

1. Nf3 {https://lichess.org/@/loepare} d5 2. e3 Nf6 3. c4
c6 4. Nc3 e6 5. b3 Bd6 6. Bb2 O-O 7. Be2 b6 $146 {A11: English Opening: 1...c6.
} ({RR} 7... e5 8. Qc2 {[%eval -53,17]} (8. cxd5 $11 {[%eval 11,18]} cxd5 9.
Nb5) 8... e4 9. Nd4 a6 10. Bf1 {[%eval -155,17]} (10. g4 $15 {[%eval -49,18]})
10... Re8 {[%eval -83,18]} ({Black should play} 10... c5 {[%eval -155,17]} 11.
Nde2 dxc4) 11. f4 $2 {[%eval -347,17][%mdl 8192]} (11. cxd5 $17 {[%eval -83,18]
} cxd5 12. Be2) 11... c5 12. Nde2 d4 13. exd4 cxd4 14. Nxd4 Ng4 $2 {[%eval 12,
20]} ({Black should try} 14... Bxf4 $19 {[%eval -246,16]} 15. Be2 e3) 15. Nce2
$2 {[%eval -283,17][%mdl 8192]} (15. Nd5 $11 {[%eval 12,20] and White stays
safe.}) 15... e3 16. g3 Nc6 17. Nxc6 bxc6 18. Bg2 {[%eval -342,22]} (18. O-O-O
$142 {[%eval -193,19]} Nf2 {[%mdl 64] Double Attack} 19. dxe3) 18... exd2+ $2 {
[%eval -123,24]} (18... Bb4 $19 {[%eval -342,22]} 19. Bc3 Bf5) 19. Qxd2 Qb6 $2
{[%eval 107,17]} (19... Ne3 $17 {[%eval -120,18] keeps the pressure on.} 20.
Bxc6 {[%mdl 64] Double Attack} Bd7) 20. O-O-O Bf5 $2 {[%eval 268,19]} (20...
Bc5 $16 {[%eval 106,19] was worth a try.} 21. Nd4 Bd7) 21. Nd4 $2 {[%eval 0,38]
} (21. Qd4 $18 {[%eval 268,19]} Qxd4 22. Nxd4) 21... Bb4 22. Bc3 {Yu,J-Tian,G 
(1275) Shanghai CHN 2024 1/2-1/2}) ({RR} 7... Re8 8. d4 Nbd7 9. O-O b6 10. a4
Bb7 11. Re1 Rc8 12. Qb1 (12. a5 $5) 12... c5 13. cxd5 exd5 14. Rd1 Qe7 15. a5
Bb8 16. axb6 axb6 17. Ba6 {[%eval -47,20]} (17. Qf5 $11 {[%eval 26,16]}) 17...
Bxa6 18. Rxa6 cxd4 19. exd4 Qb4 $2 {[%eval 118,21]} (19... Qe6 $15 {[%eval -57,
16]}) 20. Qc2 $2 {[%eval -111,17]} (20. Ba3 $1 $16 {[%eval 118,21][%cal Ra3b4]
is necessary to keep the advantage.} Qxc3 21. Rc1) 20... Ne4 21. Rd3 Rc6 {
[%eval -71,17]} (21... Ndf6 $142 {[%eval -154,17]} 22. h3 h6) 22. Ra4 {Karthik,
V (2426)-Kobalia,M (2539) Samarkand, Uzbekistan 2023 [https://lichess.org/@/
loepare] 0-1}) 8. Qc2 Bb7 9. O-O Re8 {The position is equal.} 10. d4 Nbd7 11.
a4 a5 12. Rad1 Rc8 13. h3 Qe7 14. Bd3 h6 $146 ({Predecessor:} 14... c5 15. cxd5
exd5 16. Qe2 Nf8 17. Ba6 c4 18. Bb5 Bc6 19. bxc4 dxc4 {1-0 (39) Vidit,S (2712)
-Van Foreest,J (2695) Chartres 2023}) 15. e4 dxe4 16. Nxe4 Nxe4 17. Bxe4 Nf6
18. Bd3 c5 $6 {[%eval 85,19] Inaccuracy. Bb4 was best.} (18... Bb4 19. Ne5) (
18... Bb4 $11 {[%eval 0,18] keeps the balance.}) 19. d5 $1 $16 exd5 20. Rfe1
Qf8 21. Bxf6 Rxe1+ 22. Nxe1 {Bh4 is the strong threat.} gxf6 23. cxd5 Kh8 $6 {
[%eval 121,18] Inaccuracy. Rd8 was best.} (23... Rd8 24. Nf3 Bc7 25. Bc4 Bc8
26. d6 Bxd6 27. Nh4 Kg7 28. Nf5+ Bxf5 29. Qxf5 Be5 {[%eval 146,20]} ({Better is
} 29... Bc7 $14 {[%eval 68,21]} 30. Rxd8 Qxd8) 30. Qg4+) (23... Rd8 $14 {
[%eval 60,19]}) 24. Bf1 $6 {[%eval 63,19] Inaccuracy. Qe2 was best.} (24. Qe2
Re8 25. Qf3 $1 {[%cal Rf3f5]} Qg7 26. Bb5 Rd8 27. Nc2 Qg5 28. Ne3 Be5 29. Bc6
Ba6 30. g3 Bd4) (24. Qc4 $16 {[%eval 121,18]}) 24... Qg7 25. Qf5 {Black must
now prevent Qd7.} Rd8 $1 26. Nf3 Bc8 27. Qh5 Rg8 $2 {[%eval 173,15] [#]
Mistake. Qg6 was best.} (27... Qg6) (27... Qg6 $11 {[%eval 13,20]} 28. Qh4 Bc7)
28. Nd2 $1 $18 Ba6 {[%eval 253,18]} (28... Be5 $142 {[%eval 170,19]} 29. Nc4
Bd4) 29. Qf3 Bb7 30. Nc4 $36 {[%mdl 2048] White is on the roll.} Bc7 {[%eval
264,17]} (30... Be5 {[%eval 184,20] is a better defense.} 31. Nxb6 Qg5) 31. Qf5
{Strongly threatening Qd7.} Bc8 32. Qh5 Bb7 $6 {Inaccuracy. Qg5 was best.} (
32... Qg5 33. Qxg5 hxg5 34. Re1 Kg7 {[#]} 35. Re7 $1 {[%cal Re7c7]} Bb8 36.
Nxb6 Bf5 37. Nc4 Rd8 38. Be2 Kf8 39. Rb7) 33. Re1 {Threatens to win with Re7.}
Be5 34. Nxe5 fxe5 35. Rxe5 Rd8 36. Bc4 Bc8 {If Black can now play ...Bxh3 this
consolidates a bit.} 37. Re3 Rf8 38. Qe2 Qf6 39. Rf3 $6 {Inaccuracy. Re8 was
best.} (39. Re8 Qd6 40. Rxf8+ Qxf8 41. Qe5+ Kh7 42. Qf6 Qg7 43. Bd3+ Kg8 44.
Qd8+ Qf8 45. Qxb6 c4) 39... Qg5 $2 {Mistake. Qd6 was best.} (39... Qd6 40. Qb2+
f6 41. Re3 Bd7 42. Qe2 f5 43. Re5 Kg7 44. f4 Rf7 45. Kh2 Rf6 46. Bb5) 40. d6
Qc1+ 41. Kh2 {Precisão Lichess: Brancas 94% Pretas 90%  Precisão Chess.com:
Brancas 91.9% Pretas 84,1%.  Precisão Chessbase: Brancas 74%, Pretas 49%.} 1-0

