[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.1"]
[White "Bernardo, Katz"]
[Black "Leo, Ramos Simoes"]
[Result "1-0"]
[WhiteElo "2049"]
[BlackElo "2006"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "A05"]
[Opening "Zukertort Opening"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Bernardo, Katz - Leo, Ramos Simoes"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/12L7OnHt"]

1. Nf3 { [%eval 0.1] } 1... Nf6 { [%eval 0.18] } 2. g3 { [%eval 0.11] } 2... c5 { [%eval 0.1] } 3. Bg2 { [%eval 0.14] } 3... g6 { [%eval 0.14] } 4. O-O { [%eval 0.13] } 4... Bg7 { [%eval 0.23] } 5. d3 { [%eval -0.08] } 5... O-O { [%eval 0.0] } 6. e4 { [%eval -0.07] } 6... d6 { [%eval 0.0] } 7. Nc3 { [%eval -0.04] } 7... e5 { [%eval 0.01] } 8. h3 { [%eval -0.17] } 8... Nc6 { [%eval -0.27] } 9. Bg5 { [%eval -0.39] } (9. a3 Ne8 10. Rb1 Nc7 11. b4 b6 12. Nd2 Be6 13. Nd5 Ne7 14. c4 Nexd5 15. exd5 Bf5 16. Ne4 Ne8 17. Bd2 Qd7 18. Kh2 h5 19. Bg5 Bxe4 20. dxe4 Nf6 21. Qd3 Rab8 22. Bd2 Qe7 23. Rbe1 Nd7 { Kritz,L (2578)-Fridman,R (2417) Netherlands 2006 ½-½ (41) }) (9. a4 h6 10. Nd2 Be6 11. Nc4 d5 12. exd5 Nxd5 13. Ne4 b6 14. a5 Rb8 15. axb6 axb6 16. Re1 Qc7 17. Bd2 Rfd8 18. Qc1 Kh7 19. h4 f5 20. Nc3 Ndb4 21. Nb5 Qd7 22. Bc3 Nd4 23. Nxd4 exd4 { Perske,T (2434)-Silva,M (2213) chess.com INT 2023 1-0 (58) }) 9... Ne7?! $146 { [%eval 0.17] } { Inaccuracy. h6 was best. } { Inhibits Nd5. } (9... h6 10. Bxf6 (10. Be3 Ne8 (10... Nd4 11. Nd2 Be6 12. Kh2 Qd7 13. Ne2 d5 14. f4 Bg4 15. Bxd4 Bxe2 16. Qxe2 exd4 17. e5 Nh7 18. Rab1 a5 19. c3 Rfe8 20. cxd4 cxd4 21. Qf2 f6 22. Qxd4 Rad8 23. Nf3 fxe5 24. fxe5 { Samoletov,E-Sitnikov,M Nikolaev 2009 1-0 (59) }) (10... Kh7 11. Qd2 Ne7 12. Nh2 a6 13. f4 exf4 14. gxf4 Nfg8 15. d4 b6 16. Rad1 Qc7 17. dxc5 dxc5 18. Qd6 Qxd6 19. Rxd6 Bxc3 20. bxc3 Rb8 21. Rb1 Be6 22. Rbxb6 Rxb6 23. Rxb6 Bxa2 24. Rxa6 { Toth,P-Vasconcellos,F Rio de Janeiro 1965 1-0 (46) }) 11. Nh2 f5 12. f4 Nd4 13. Nd5 Nf6 14. c3 Nxd5 15. exd5 exf4 16. Bxf4 Nb5 17. Qb3 Nc7 18. Rae1 g5 19. Bd2 b5 20. Rf2 Re8 21. Rfe2 Rxe2 22. Rxe2 Bd7 23. Qd1 Qf8 24. Nf3 { Zapata,K (2036)-Reategui,M Lima 2002 ½-½ (55) }) 10... Qxf6) 10. Qd2 { [%eval 0.14] } 10... Be6 { [%eval 0.17] } 11. Kh2 { [%eval 0.13] } { The position is equal. } 11... Qd7 { [%eval 0.31] } 12. Bh6 { [%eval 0.15] } 12... Nh5 { [%eval 0.23] } 13. g4 { [%eval -0.15] } (13. Be3) 13... Nf6?! { [%eval 0.48] } { Inaccuracy. Nf4 was best. } (13... Nf4 14. Bxf4 exf4 15. Rae1 Nc6 16. Qxf4 Nd4 17. Qc1 Nxf3+ 18. Bxf3 b5 19. Bg2) 14. Bxg7 $14 { [%eval 0.47] } 14... Kxg7 { [%eval 0.51] } 15. Ng5? { [%eval -0.61] } { Mistake. Nh4 was best. } (15. Nh4) 15... h6 $15 { [%eval -0.59] } 16. Nxe6+ { [%eval -0.56] } 16... fxe6 { [%eval -0.62] } 17. f4 { [%eval -0.57] } { Against g5 } 17... exf4 { [%eval -0.66] } 18. Rxf4 { [%eval -0.61] } 18... g5 { [%eval -0.72] } 19. Rf2 { [%eval -0.74] } 19... Ng6 { [%eval -0.7] } 20. Raf1 { [%eval -0.51] } 20... Nf4 { [%eval -0.54] } 21. Ne2! { [%eval -0.49] } 21... e5 { [%eval -0.54] } 22. Bf3 { [%eval -0.49] } 22... Rh8 { [%eval -0.56] } 23. Nxf4 { [%eval -0.87] } (23. c3 $15) 23... gxf4 $17 { [%eval -0.91] } 24. Rg2 { [%eval -0.81] } 24... Nh7 { [%eval -0.88] [%cal Bf6h7,Bh7g5,Bg5h3,Bh3g1] } 25. Qf2 { [%eval -0.86] } 25... Rag8 { [%eval -0.93] } (25... Ng5) 26. Rfg1?! { [%eval -1.58] } { Inaccuracy. h4 was best. } (26. h4) 26... Kf7 { [%eval -1.47] } 27. c3 { [%eval -1.89] } (27. Qf1 $17) 27... Ng5 $19 { [%eval -1.66] } { ...Nxh3! is the strong threat. } { [%cal Bg5h3] } 28. h4 { [%eval -1.8] } 28... h5 { [%eval -1.61] [%cal Bf7e8] } 29. Kh1?? { [%eval -4.15] } { Blunder. Bd1 was best. } { [#] } (29. Bd1 c4 (29... Ke7 30. b4 c4 31. dxc4 f3 32. c5 fxg2 33. hxg5 Rf8 34. Qd2 hxg4+) 30. Rf1) 29... Nh3 { [%eval -4.06] } 30. Qe2 { [%eval -3.87] } 30... Nxg1 { [%eval -3.9] } 31. Kxg1 { [%eval -3.81] } 31... hxg4 { [%eval -4.1] } 32. Bxg4 { [%eval -3.97] } 32... Qe7 { [%eval -3.79] } 33. h5 { [%eval -3.82] } 33... Qh4 { [%eval -3.39] } 34. d4 { [%eval -2.93] [#] } 34... Ke7?? { [%eval -0.69] } { Blunder. Qe7 was best. } (34... Rxg4! $19 35. Qxg4 Qxg4 36. Rxg4 cxd4 37. cxd4 Rxh5) (34... Qe7 35. dxc5 dxc5 36. Qc4+ Kf8 37. Kf2 Rh6 38. Kf1 Rg5 39. Qa4 Qd8 40. Qxa7) 35. dxc5?? { [%eval -3.04] } { Blunder. Qb5 was best. } (35. Qb5 Qe1+ 36. Kh2 Rxh5+ 37. Bxh5 Qh4+ 38. Kg1 Rxg2+ 39. Kxg2 Qxh5 40. Qxb7+ Kf6 41. dxe5+ dxe5 42. Qa6+ Kg5 43. Qd3) 35... dxc5?? { [%eval -1.14] } { Blunder. Rg5 was best. } (35... Rg5 36. cxd6+ Kxd6 37. Qd2+ Kc7 38. Qf2 Qxf2+ 39. Kxf2 Rd8 40. Ke2 Rd6 41. Kf1) 36. Qc4? { [%eval -2.82] } { Mistake. Qb5 was best. } (36. Qb5 Qe1+ (36... Rd8 37. Qb3 Qf6 38. Qxb7+ Kf8 39. Qxa7 Qe7 40. Qxe7+ Kxe7 41. a4 Rhg8) 37. Kh2 Qh4+ 38. Kg1) 36... Rxg4?? { [%eval 0.02] } { Blunder. Qf6 was best. } (36... Qe1+ $19 37. Kh2 Qh4+ 38. Kg1 Qf6 39. Qxc5+ Qd6 40. Qxd6+ (40. Qxa7? Rxg4 41. Rxg4 Qd1+ 42. Kf2 Qxg4 $19) 40... Kxd6) (36... Qf6 37. b4 Qc6 38. bxc5 Rg5 39. Kf1 Rhg8 40. h6 b5 41. Qe2 f3 42. Qxf3) 37. Qxc5+ { [%eval 0.0] } 37... Kd7 { [%eval 0.04] } { ( -> ...Qe1+) } 38. Qd5+ { [%eval 0.01] } 38... Kc7?? { [%eval 1.96] } { Blunder. Kc8 was best. } (38... Kc8 39. Qe6+ Kd8 40. Qxg4 Qxh5) 39. Qxe5+ $18 { [%eval 2.19] } 39... Kd8?? { [%eval 8.37] } { Blunder. Kd7 was best. } (39... Kd7 40. Qf5+ (40. Qxh8? { leads to mate. } 40... Qe1+ 41. Kh2 Rh4#) 40... Kd6 41. Qd5+ (41. Qxg4 Qxg4 42. Rxg4 Rxh5 $16 (42... Ke5 43. Rh4 Kxe4 44. Kf2 Rh6 45. c4)) (41. Rxg4 Qe1+ 42. Kh2 Qe2+ 43. Kg1 Qe1+ 44. Kh2 Qe2+ 45. Kh1 Qf1+ 46. Kh2 Qe2+) 41... Ke7 42. Qc5+ Ke6 43. Qf5+ Kd6 44. Qxg4 (44. Rxg4 Qe1+ 45. Kh2 Qe2+ 46. Kh3 Qf3+ 47. Kh2 Qe2+ 48. Kh1 Qf1+ 49. Kh2 Qe2+) 44... Qxg4 45. Rxg4 Ke5) 40. Qxh8+ { [%eval 8.2] } 40... Ke7 { [%eval 8.07] } 41. Qe5+ { [%eval 7.17] } { Weighted Error Value: White=0.59/Black=0.80 } { PRECISÃO: BRANCAS 89% PRETAS 80% } 1-0


[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.2"]
[White "Carlos Henrique, Luz Da Costa"]
[Black "Wagner, Dias Fernandes"]
[Result "1-0"]
[WhiteElo "1905"]
[BlackElo "1800"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "A04"]
[Opening "Zukertort Opening: Sicilian Invitation"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Carlos Henrique, Luz Da Costa - Wagner, Dias Fernandes"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/L8UWVU3q"]

1. Nf3 { [%eval 0.1] } 1... c5 { [%eval 0.25] } 2. b3 { [%eval 0.0] } 2... Nc6 { [%eval 0.0] } 3. Bb2 { [%eval 0.0] } 3... Nf6 { [%eval 0.0] } 4. g3 { [%eval -0.37] } (4. Bxf6 gxf6 5. c4 f5 6. Nc3 Bg7 7. Rc1 b6 8. g3 Bb7 9. Bg2 e6 10. e3 Qe7 11. O-O h5 12. h4 O-O-O 13. d4 Kb8 14. d5 Ne5 15. d6 Qf8 16. Nxe5 Bxe5 17. Bxb7 Kxb7 18. Nb5 a6 { So,W (2815)-Carlsen,M (2832) Chess.com INT 2017 0-1 }) 4... d6 { [%eval 0.14] } (4... g6 5. Bg2 d5 6. Ne5 Nxe5 7. Bxe5 Bg7 8. d4 Qa5+ 9. Qd2 Qxd2+ 10. Nxd2 cxd4 11. Nf3 O-O 12. Nxd4 Rd8 13. Rd1 Ne8 14. Bxg7 Kxg7 15. f4 Nf6 16. O-O Bf5 17. Rd2 Be4 18. Bf3 h5 19. h3 { Krishna,C (2415)-Liu,Z (2335) Budapest HUN 2025 ½-½ (33) }) 5. Bg2 { [%eval 0.32] } 5... e5 { [%eval 0.31] } 6. d3 { [%eval 0.32] } 6... h6 $146 { [%eval 0.31] } (6... Be7 7. O-O O-O (7... Bg4) (7... Be6) 8. Nbd2 (8. c4 $14) 8... Rb8 9. c4 (9. e4 b5 10. Ne1 (10. c3) 10... Qb6 11. c4 a5 12. Rb1 (12. cxb5 Qxb5 13. Nc4) 12... Qa6 (12... Nb4) 13. h3 (13. Nc2) 13... a4 14. f4 axb3 15. axb3 bxc4 16. Nxc4 (16. fxe5 dxe5 17. Nxc4) 16... Nd7 (16... exf4 $15 17. gxf4 Be6) 17. Nf3 f6 18. Nh4 { aiming for Nf5. } 18... Nb6 19. f5 (19. Nf5 $14 Nxc4 20. bxc4) 19... Nxc4 (19... Bd7 $15) 20. dxc4 (20. bxc4 Bd7 21. Ra1) 20... Qb7 21. Bc1 { Starostin,G-Spiridonov,N Lvov 1999 ½-½ (70) }) 9... b5 10. e3 a6 11. d4 exd4 (11... cxd4 { was preferrable. } 12. exd4 e4) 12. exd4 $14 d5 (12... Re8 $14) 13. cxb5 (13. Ne5! $16 { [%cal Re5c6] } 13... Nxd4 14. Bxd4 cxd4 15. Nc6) 13... Nb4? (13... Rxb5 $14 14. Rc1 c4) 14. dxc5 { Threatens to win with Ne5. } 14... Bxc5 (14... Rxb5 { is a better defense. } 15. Ne5 Nd7) 15. Ne5! $18 { a3 is the strong threat. } 15... Rxb5? (15... Bf5 16. bxa6 Qd6) 16. a3 $18 Qb6 17. axb4 Bxb4 18. Ndf3 Ne4 19. Bd4 Bc5 20. Bxc5 Qxc5 21. Rc1 { Bryakin,M (2437)-Srebrnic,M (2372) chess.com INT 2022 1-0 }) 7. Nc3?! { [%eval -0.49] } { Inaccuracy. c4 was best. } (7. c4 Be7 8. Nc3 Bg4 9. Nd2 Qd7 10. h3 Be6 11. Nde4 O-O) 7... a6?! { [%eval 0.1] } { Inaccuracy. d5 was best. } (7... d5 8. e4 d4 9. Nd5 Nxd5 10. exd5 Qxd5 11. O-O Qd6 12. Re1 f6 13. Nh4) 8. e4 { [%eval -0.09] } { The position is equal. } 8... Be6 { [%eval 0.27] } (8... g6) 9. Qd2 { [%eval -0.25] } (9. Nd2) 9... Be7 { [%eval 0.01] } (9... g6) 10. O-O { [%eval -0.03] } 10... Qd7?! { [%eval 0.52] } { Inaccuracy. O-O was best. } (10... O-O 11. Rae1 Re8 12. Nh4 Qa5 13. f4 Rad8 14. Nf3) 11. Na4?! { [%eval -0.05] } { Inaccuracy. Nh4 was best. } (11. Nh4 d5 12. exd5 Nxd5 13. Nf5 Bf6 14. Bxd5 Bxd5 15. Nxd5 Qxd5 16. Ne3 Qd7) 11... Bd8 { [%eval -0.07] } { Inhibits Nb6. } 12. c4 { [%eval -0.26] } 12... Bh3 { [%eval 0.09] } (12... b5 13. Nc3 Ba5) 13. Nc3 { [%eval -0.36] } (13. Nh4 { is superior. }) 13... Bxg2 { [%eval 0.0] } 14. Kxg2 { [%eval 0.02] } 14... Nh7 { [%eval 0.3] } 15. Nd5 { [%eval 0.34] } 15... Ng5?! { [%eval 1.38] } { Inaccuracy. O-O was best. } (15... O-O 16. Ne3 b5 17. Qe2 Rb8 18. Rab1 Nd4 19. Bxd4 cxd4 20. Nd5 Nf6 21. Rbc1) 16. Ng1 { [%eval 1.22] } (16. Nh4) 16... Ne6 { [%eval 1.18] } 17. Nf3?! { [%eval 0.41] } { Inaccuracy. f4 was best. } (17. f4 b5 18. f5 Nf8 19. f6 g6 20. a3 Qe6 21. Rf2 Rb8 22. h3 Nd7) 17... Ng5?! { [%eval 1.34] } { Inaccuracy. h5 was best. } (17... O-O) (17... h5 18. h4 f6 19. Rab1 Qf7 20. Qd1 Qg6 21. Nd2 O-O 22. Kh2 Ba5 23. f4) 18. Ng1 { [%eval 1.28] } (18. Nh4) 18... Ne6 $16 { [%eval 1.12] } 19. Qe2 { [%eval 0.77] } (19. f4 $16) 19... Ne7 { [%eval 1.17] } (19... Ned4 $14 20. Bxd4 Nxd4) 20. Ne3?! { [%eval 0.5] } { Inaccuracy. f4 was best. } (20. f4 Nd4 21. Bxd4 exd4 22. f5 Nxd5 23. exd5+ Kf8 24. Nh3 Bf6 25. Nf2 Re8) 20... Ng6?! { [%eval 1.15] } { Inaccuracy. Nd4 was best. } (20... Nd4 21. Qd1 O-O 22. f4 f5 23. fxe5 dxe5 24. Bxd4 exd4 25. Nxf5 Nxf5 26. Rxf5) 21. Qg4?! { [%eval 0.24] } { Inaccuracy. Nd5 was best. } (21. Nd5 Nd4 22. Bxd4 cxd4 23. f4 O-O 24. Qh5 exf4 25. gxf4 Ne7 26. Rae1 Nxd5) 21... h5 $36 { [%eval 0.25] } { Black fights for an advantage. } 22. Qf5?? { [%eval -2.92] } { Blunder. Qd1 was best. } { [#] } (22. Qd1 h4 23. Nd5 b5 24. Bc3 b4 25. Bd2 a5 26. f4 hxg3 27. hxg3 Nexf4+) 22... Nef4+?? { [%eval 0.24] } { Blunder. Ngf4+ was best. } (22... Ngf4+ 23. gxf4 g6 24. Bxe5 gxf5 25. Bxh8 Nxf4+ 26. Kh1 fxe4 27. dxe4 f6 28. Nf5) 23. gxf4?? { [%eval -2.52] } { Blunder. Kh1 was best. } (23. Kh1 Ne6 (23... Nxd3 24. Ba3 Nb4 25. Rad1 Qc6 26. Qf3 Ne7 27. Rd2 Ba5 28. Rfd1 O-O-O) 24. Nd5) 23... Nh4+ $19 { [%eval -2.39] } 24. Kh1 { [%eval -2.5] } 24... Nxf5 { [%eval -2.46] } 25. Nxf5 { [%eval -2.52] } 25... f6 { [%eval -2.1] } 26. Nxg7+?? { [%eval -4.86] } { Blunder. Ne2 was best. } (26. Ne2 g6 27. Ne3 h4 28. Nd5 b5 29. f3 Rb8 30. f5 bxc4 31. dxc4 gxf5) 26... Qxg7 { [%eval -4.75] } 27. Ne2 { [%eval -4.67] } 27... Qh7 { [%eval -4.18] } 28. f5 { [%eval -4.38] } 28... Rg8 { [%eval -4.48] } 29. Nc3 { [%eval -4.4] } 29... Be7 { [%eval -4.24] } 30. Nd5 { [%eval -4.22] } 30... O-O-O { [%eval -3.71] } 31. a4 { [%eval -3.83] } 31... Kb8 { [%eval -4.4] } 32. Bc3 { [%eval -4.2] } 32... h4 { [%eval -4.06] [%cal Bh7h5] } 33. h3? { [%eval -7.64] } { Mistake. f3 was best. } { [#] } (33. Rae1 $19) (33. f3 h3 34. Ba5 Rd7 35. b4 Bd8 36. b5 Qg7 37. Rg1 Qxg1+ 38. Rxg1 Rxg1+) 33... Qh5! { [%eval -7.84] } 34. f3 { [%eval -6.03] } 34... Rg7?! { [%eval -4.69] } { Inaccuracy. Rg3 was best. } { Black is clearly winning. } (34... Rg3 35. Kh2 Rdg8 36. d4 Bd8 37. b4 Rg2+ 38. Kh1 Qg5 39. dxc5) 35. Nxe7 { [%eval -5.58] } 35... Rg3 { [%eval -5.41] [%cal Bg7g3,Bg3h3,Bh3f3] } 36. Ra2?! { [%eval -7.2] } { Inaccuracy. Kh2 was best. } (36. Kh2 Qg5 37. Be1 Rg2+ 38. Kh1 Re2 39. Rf2 Qe3 40. Rxe2 Qxe2 41. Kg1 Qxf3) 36... Rxh3+ { [%eval -6.58] } (36... Qg5 37. Be1 Qc1) 37. Rh2 { [%eval -7.2] } 37... Rxf3 { [%eval -6.89] } 38. Rg1 { [%eval -8.01] } { Weighted Error Value: White=1.00/Black=0.51. Loss on time!? } { PRECISÃO: BRANCAS 80% PRETAS 87% } 1-0


[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.3"]
[White "Adnilton Correia, de Almeida Nogueira"]
[Black "Rogerio Cerqueira, Felix De Mello"]
[Result "0-1"]
[WhiteElo "1939"]
[BlackElo "2018"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "D10"]
[Opening "Slav Defense"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Adnilton Correia, de Almeida Nogueira - Rogerio Cerqueira, Felix De Mello"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/79vqlsqw"]

1. d4 { [%eval 0.15] } { Ftacnik,Lubomir } 1... d5 { [%eval 0.27] } 2. c4 { [%eval 0.22] } 2... c6 { [%eval 0.21] } 3. Nc3 { [%eval 0.17] } 3... Nf6 { [%eval 0.27] } 4. Bf4 { [%eval -0.25] } 4... e6?! { [%eval 0.34] } { Inaccuracy. dxc4 was best. } (4... dxc4 5. a4 Nd5 6. Bg3 Qa5 7. e4 Nxc3 8. Qd2 Nd7 9. bxc3) 5. a3?! { [%eval -0.36] } { Inaccuracy. e3 was best. } (5. e3 Bd6 6. Bg3 O-O 7. Nf3 b6 8. Be2 Ba6 9. Qb3 h6) 5... Bd6?! { [%eval 0.19] } { Inaccuracy. dxc4 was best. } (5... dxc4 6. e4 b5 7. g4 Nfd7 8. Nf3 Be7 9. h4 a5 10. g5) 6. Bg5 { [%eval 0.09] } 6... Be7 { [%eval 0.26] } 7. e3 { [%eval 0.22] } 7... Nbd7 { [%eval 0.29] } 8. Nf3 { [%eval 0.36] } 8... h6 { [%eval 0.33] } (8... Ne4 9. Nxe4 dxe4 10. Bxe7 Qxe7 11. Nd2 f5 12. c5 (12. Qh5+ g6 13. Qh6 e5 14. c5 (14. O-O-O) 14... Qf6 (14... Nf6 $15 15. dxe5 Ng4) 15. Nc4 $14 exd4 16. Nd6+ (16. exd4 $14 Qxd4 17. Rd1) 16... Ke7! 17. exd4 Qxd4 18. Rd1 Qxb2 19. Bc4 Nxc5 20. O-O b5? (20... Qf6 $15 { stays ahead. } 21. Nf7 g5 22. Qxf6+ Kxf6 23. Nxh8 Be6 24. Bxe6 Kxe6) 21. Qe3 (21. Rd2 $16 Qf6 22. Qe3) 21... Nd7? (21... Ne6 { and Black is okay. } 22. Nxc8+ Rhxc8 23. Bxe6 Kxe6)) (12. Be2 c5 (12... e5 { remains equal. }) 13. dxc5! $16 Qxc5 (13... Nxc5 14. b4 Nd3+ 15. Bxd3 exd3) 14. O-O (14. b4 $16 Qc7 15. c5) 14... O-O (14... Qe7 $14) 15. b4! $16 { [%cal Rb4c5] } 15... Qe7 16. c5 Nf6 17. Nc4 Bd7 18. Ne5 (18. Qd6 $16 Rae8 19. a4) 18... Bc6 $14 19. Nxc6 bxc6 20. Qb3 (20. Rc1 $14 { is superior. }) 20... Nd5 21. Bc4 Rf6 (21... a5) 22. Rfd1 Rb8 (22... Rh6 $14) 23. Bxd5 (23. Qb2 $16) 23... exd5 24. Qc3 f4 25. exf4 Rxf4) 12... e5 (12... O-O 13. Bc4 (13. Nc4 b6 14. b4 Ba6 { [%cal Rb6c5] } 15. Be2 Bxc4 16. Bxc4 a5 17. Qb3 Rfe8 18. O-O (18. cxb6! $14 axb4 19. O-O) 18... b5 $15 19. Be2 { a4 is the strong threat. } 19... a4! 20. Qb1 Nf6 21. f3 e5 22. fxe4 { Strongly threatening d5. } 22... fxe4 (22... exd4 $17 23. Rxf5 Nxe4) 23. d5 Nxd5 24. Qxe4 { Threatens to win with Bxb5! } { [%cal Be2b5] } 24... Rad8) 13... Kh8! $15 14. f4 { Inhibits e5. } 14... exf3 (14... g5 $15) 15. Qxf3 e5 16. O-O e4 17. Qg3 Nf6 18. Ba2 g6 (18... Be6 { 18...g6 0.12 } 19. Qe5 Rae8 (19... Nd5 $16) 20. Qxe6 $18 Qxe6 21. Bxe6 Rxe6 22. Rxf5 Rfe8 23. Raf1 h6 24. Nc4 Kh7 25. h3) 19. Nc4 Nh5 (19... Be6 { keeps the balance. }) 20. Qd6 Qxd6 21. Nxd6 Nf6 22. b4 Kg7 23. Rad1 (23. a4 $16) 23... Ne8 (23... b5 $14) 24. Nxe8+ (24. Nxc8 $16 Rxc8 25. g4) 24... Rxe8) (12... Nf6 { 12...0-0 0.12 } 13. Nc4 O-O 14. Be2 Nd5 15. Qc2 (15. Ne5) 15... b5 (15... Bd7) 16. cxb6 (16. Ne5 $16) 16... axb6 17. Ne5 Bd7 (17... c5) 18. O-O $14 Rfc8 19. b4 Be8 20. Qd2 (20. Qb2 $14) 20... Rc7 (20... c5) 21. Rfc1 Rca7 22. Qb2) 13. Nc4 O-O 14. Nd6 Kh8 15. Be2 (15. Bc4 Nf6 16. b4 b5 (16... Be6!) 17. Bb3 (17. dxe5 $14 Ng4 18. Be2 Nxe5 19. a4) 17... Be6 18. O-O exd4 (18... Bxb3! { feels stronger. } 19. Qxb3 exd4) 19. Bxe6 Qxe6 20. Qxd4 a5 21. a4 bxa4! { Hoping for ...axb4. } 22. Rxa4 axb4 23. Rxa8 Rxa8 24. Qxb4) 15... exd4 (15... f4) 16. Qxd4 $14 Rf6 (16... b6 $14) 17. O-O-O (17. Rd1 Nf8 18. O-O) 17... Nf8 $16 18. g4 (18. h3 $16) 18... Ng6? (18... fxg4 $14 19. Qxe4 Be6) 19. g5 $18 Rf8 20. h4! Qc7 (20... f4 21. h5 Ne5 22. Qxe5 Qxe5 23. Nf7+ Kg8 24. Nxe5 Be6) 21. h5 $18 Ne7 22. h6 { [%csl Gh6][%cal Rd4g7] } 22... Nd5 23. g6) 9. Bh4 { [%eval 0.28] } 9... dxc4 { [%eval 0.64] } (9... Ne4 10. Nxe4 (10. Bxe7 Qxe7) 10... dxe4 11. Bxe7 Qxe7 12. Nd2 f5 13. c5 O-O 14. Nc4! e5 15. Nd6 b6 (15... exd4 16. Qxd4 Ne5 17. Be2) 16. b4 Kh7 17. Be2 Rf6 (17... a5) 18. O-O (18. Qa4! { [%cal Ra4c6] } 18... b5 19. Qd1) 18... exd4 $16 19. exd4 (19. Qxd4 { 19.exd4 0.81 } 19... bxc5 20. bxc5 Nxc5) 19... Nf8 (19... g6? { 19...xd6 0.74 } 20. f3) (19... Rxd6 $14 20. cxd6 Qxd6) 20. f3! $16 exf3 (20... e3 21. f4) (20... bxc5 $16 21. dxc5 Qe5) 21. Bxf3 $18 Bd7 (21... Qe3+ 22. Kh1 Bd7 23. Nc4 Qe7 24. cxb6) 22. Re1 Re6? (22... Qd8 { is a better defense. } 23. Ra2 Ng6) 23. Qd2 (23. b5 bxc5 24. dxc5 Rb8 25. bxc6 Bc8 26. Rxe6 Bxe6 27. Rb1) 23... bxc5 24. dxc5 { Beliavsky,A (2650)-Ruban,V (2535) Novosibirsk 1995 CBM 050 [Ftacnik,Lubomir] 1-0 }) (9... a5 10. Bd3 dxc4 11. Bxc4 b5 12. Bd3 Bb7 13. O-O g5 (13... O-O) 14. Bg3 $16 Nh5 (14... b4 $16) 15. Be5 $18 Nxe5 (15... O-O 16. h3 b4) 16. Nxe5 $18 Ng7 17. Rc1 Qb6 18. Qf3 Rf8 19. Be4 Rc8 20. Ne2 f5 21. Bxc6+ Bxc6 22. Rxc6 Rxc6 23. Qxc6+ Qxc6 24. Nxc6 { Ilcin,M (1698)-Mevlevioglu,M (1524) Kayseri TUR 2025 1-0 (55) }) 10. Bxc4 $14 { [%eval 0.66] } 10... O-O $146 { [%eval 0.65] } (10... Nd5 11. Bxe7 (11. Bg3! $14) 11... Qxe7 12. Ne2 N5b6 (12... O-O) 13. Ba2 $14 e5 (13... c5 $14) 14. dxe5 (14. O-O $16) 14... Nxe5 $14 15. Nxe5 (15. Qd4 $14 Nbd7 16. Nxe5 Nxe5 17. O-O) 15... Qxe5 16. Qd4 Qxd4 17. Nxd4 O-O 18. Rc1 Bd7 19. O-O Rad8 20. h3 Bc8 21. b4 a6 22. Bb3 Nd5 23. Rfd1 Nc7 24. a4 Rd6 25. Rc5 { Wagner,I (1875)-Fechner,F Mecklenburg VP 2018 ½-½ (33) }) (10... Nb6 { 10...0-0 0.52 } 11. Bb3 Nbd5 12. O-O Nxc3 13. bxc3 Qa5 14. Qc1 (14. Ne5 $18) 14... Bd7 (14... c5) 15. Ne5 $16 Qc7 16. Qc2 (16. f4) 16... c5 $16 17. Bxf6 Bxf6 18. Nxd7 Kxd7 19. Ba4+ (19. d5 $14) 19... Ke7 20. Rfc1 Rac8 21. Rab1 b6 22. Qd2 Rhd8 23. h3 Qd6 24. Bb3 (24. Qa2 { might be stronger. }) 24... e5 (24... cxd4 $15 { should be considered. } 25. cxd4 Qxa3) 25. Qe2 { Wulff,K-Stoffers,E Bad Neustadt 1990 0-1 (56) }) 11. Qc2 { [%eval 0.57] } { White is slightly better. } 11... c5 { [%eval 0.83] } (11... b5 $14 12. Be2 Bb7) 12. Rd1 { [%eval 0.87] } (12. dxc5! $16 { And now b4 would win. } 12... Nxc5 13. O-O) 12... cxd4 { [%eval 0.89] } 13. exd4?! { [%eval 0.15] } { Inaccuracy. Rxd4 was best. } (13. Rxd4 a6 14. Be2 (14. Ba2 Re8 15. Bb1 Qa5 16. O-O Nf8 17. Qd2 e5 18. Nd5 Qxd2)) 13... b6 { [%eval 0.46] } (13... a6) 14. O-O { [%eval 0.48] } 14... Bb7 { [%eval 0.47] } 15. Ne5 { [%eval 0.3] } (15. Bg3! $14 { deserves consideration. }) 15... Rc8 { [%eval 0.24] } 16. Qa4 { [%eval 0.0] } 16... a6 { [%eval 0.0] } 17. Ba2 { [%eval -0.49] } (17. Rfe1) 17... b5 $15 { [%eval -0.44] } 18. Qb3 { [%eval -0.74] [%cal Be5f7] } 18... Nd5 { [%eval -0.53] } 19. Bxe7 { [%eval -0.53] } 19... Qxe7 { [%eval -0.49] } (19... Nxe7 20. Nxf7! Rxf7 21. Qxe6 $14) 20. Nd3?? { [%eval -2.35] } { Blunder. Nxd7 was best. } { [#] } (20. Nxd7 Qxd7 21. Ne4 Qc7 22. Bb1 Nf4 23. f3 Bd5 24. Qe3 Bc4 25. Rfe1 a5) 20... Qg5?? { [%eval -0.36] } { Blunder. Nxc3 was best. } (20... Nxc3 21. bxc3 Qg5 22. Ne1 Bd5 23. Qc2 Nb6 24. Bb1 g6 25. f4 Qe7 26. Nd3) 21. Ne4! { [%eval -0.41] } 21... Qg6 { [%eval 0.0] } (21... Qe7 $15) 22. Nd6 { [%eval 0.02] } 22... Rb8 { [%eval 0.12] } (22... Ne3? 23. Nf4 Qg4 24. fxe3 $18) 23. Nxb7 { [%eval 0.1] } 23... Rxb7 { [%eval 0.0] } 24. Rc1 { [%eval -0.02] } 24... N7f6 { [%eval 0.11] } 25. Bb1 { [%eval -0.07] } 25... Qg4 { [%eval -0.06] } 26. Rfd1 { [%eval -0.18] } 26... Qh4 $40 { [%eval 0.25] } { Black mounts an attack. } (26... Qxd4? 27. Nc5 Qxd1+ 28. Qxd1 $18) 27. Nc5 { [%eval -0.1] } 27... Ra7 { [%eval -0.15] } 28. Qf3 { [%eval -0.11] } 28... Ng4 { [%eval -0.13] } 29. h3 { [%eval -0.03] } 29... Ngf6 { [%eval -0.08] } 30. Nd3?! { [%eval -0.64] } { Inaccuracy. Bd3 was best. } (30. Bd3 Qf4 31. Qxf4 Nxf4 32. h4 g6 33. g3 N4d5 34. Bf1 Ne7 35. Bg2 Kg7) 30... Qxd4 $15 { [%eval -0.67] } 31. Nb4 { [%eval -0.75] } 31... Qxb2?! { [%eval 0.0] } { Inaccuracy. Qf4 was best. } (31... Qf4 32. Qxf4 Nxf4 33. Kf1 N4d5 34. Nxd5 Nxd5 35. Be4 Ne7 36. h4 g6 37. Rd6) 32. Rc2! { [%eval 0.0] } 32... Qa1 { [%eval 0.0] } 33. Ba2?! { [%eval -0.57] } { Inaccuracy. Rcc1 was best. } (33. Qb3 Nxb4 34. Rb2) (33. Rcc1 Qb2 34. Rc2 Qa1) 33... Qe5 $15 { [%eval -0.64] } { aiming for ...Nxb4. } 34. Nc6 { [%eval -1.14] } (34. Bxd5 $15 Nxd5 35. Nxd5 exd5 36. Rxd5) 34... Qc7 $17 { [%eval -1.17] } 35. Rdc1?! { [%eval -2.02] } { Inaccuracy. Bxd5 was best. } (35. Bxd5 Nxd5 36. Qb3 (36. Rdd2 Raa8 37. Nb4 Qe7 38. Nxd5 exd5 39. Rxd5 Rad8 40. Rdc5 Rfe8)) 35... Raa8 $19 { [%eval -1.98] } 36. Qd3 { [%eval -2.2] } 36... Qf4 { [%eval -1.91] } 37. Nd4?! { [%eval -3.07] } { Inaccuracy. Bb3 was best. } (37. Bb3 g6 38. g3 Qf5 39. Qf1 h5 40. Nd4 Qe5 41. Qd3 Kg7 42. Qd2 h4) 37... Qe4?! { [%eval -1.83] } { Inaccuracy. Rad8 was best. } (37... Rad8 38. Ne2 (38. g3 Nb4 39. axb4 Qxd4 40. Qa3 h5 41. Qxa6 h4 42. Qxb5 hxg3 43. Qc5) 38... Qe5) 38. Qd2? { [%eval -3.22] } { Mistake. Qxe4 was best. } (38. Qxe4 Nxe4 39. Bxd5 exd5 40. Rc7 Nd6 41. Nc6 Kh8 42. Rd7 Nc4 43. Rc3 Rac8) 38... Rfd8 { [%eval -3.19] } 39. Re1 { [%eval -3.09] } 39... Qf4 { [%eval -3.2] } 40. Qe2? { [%eval -5.55] } { Mistake. Qxf4 was best. } (40. Qxf4 Nxf4 41. Nc6 Rd3 42. a4 Ra3 43. axb5 axb5 44. Bb1 N4d5 45. Nd4 b4) 40... Re8? { [%eval -2.94] } { Mistake. Qxd4 was best. } (40... Qxd4 41. Bxd5 Qxd5 42. Qe3 Rac8 43. Rcc1 Qa8 44. Rxc8 Rxc8 45. Rc1 Nd5 46. Rxc8+) 41. Rc6? { [%eval -5.44] } { Mistake. Qd3 was best. } (41. Nc6 { was called for. }) (41. Qd3 Rac8 42. Nc6 Qd6 43. Rec1 Qf8 44. g3 Rc7 45. Bb1 Rec8 46. Ne5 Rxc2) 41... Qxd4 { [%eval -5.46] } { Black is clearly winning. } 42. Rd1 { [%eval -6.18] } 42... Qe4?! { [%eval -4.78] } { Inaccuracy. Nc3 was best. } (42... Nc3 43. Qd2 Qxd2 44. Rxd2 Rec8 45. Rxc8+ Rxc8 46. Rc2 g5 47. Kf1 a5 48. Rc1) 43. Qd2?! { [%eval -7.24] } { Inaccuracy. Qxe4 was best. } (43. Qxe4 Nxe4 44. Bxd5 exd5 45. Rxd5 Rec8 46. Rb6 Nc5 47. Rbd6 Kf8 48. Kh2 a5) 43... Nf4 { [%eval -7.23] } { Weighted Error Value: White=0.63/Black=0.46 } { PRECISÃO: BRANCAS 85% PRETAS 90% } 0-1


[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.4"]
[White "Rocine Castelo, de Carvalho"]
[Black "Sirlei, Pereira Azevedo"]
[Result "0-1"]
[WhiteElo "1644"]
[BlackElo "1929"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "B23"]
[Opening "Sicilian Defense: Closed"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Rocine Castelo, de Carvalho - Sirlei, Pereira Azevedo"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/Fr8jqqlA"]

1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.32] } 2. Nc3 { [%eval 0.19] } 2... d6 { [%eval 0.26] } 3. g3 { [%eval 0.0] } 3... Nf6 { [%eval 0.07] } 4. Bg2 { [%eval 0.11] } 4... Bg4 { [%eval 0.35] } (4... a6 5. d3 e6 6. Nh3 Nc6 7. O-O Be7 8. f4 Qc7 9. Be3 Bd7 10. a3 O-O-O 11. Na2 h5 12. Ng5 Ng4 13. Bd2 Bxg5 14. fxg5 Rdf8 15. c3 Qb6 16. Rb1 c4+ 17. d4 e5 18. Kh1 exd4 19. cxd4 { Havasi,J (2265)-Repasi,Z (2315) Hungary 1998 1-0 (42) }) 5. Nce2 { [%eval 0.0] } (5. Nge2 Nc6 6. h3 Bh5 7. O-O Bxe2 8. Nxe2 h5 9. d3 e6 10. f4 Be7 11. Be3 Qc7 12. a4 d5 13. e5 Nd7 14. d4 cxd4 15. Nxd4 Nxd4 16. Bxd4 Rc8 17. c3 Bc5 18. Rc1 Qb6 19. b4 Bxd4+ { Sutter,J (1382)-Pfaltz,M (1587) Biel 2022 0-1 (55) }) 5... e5 $146 { [%eval 0.08] } (5... Nc6 6. h3 (6. c3 g6 (6... e5! $15) 7. d3 (7. h3 Bd7 8. d3) 7... Bg7 8. f4 Qc8 (8... Bd7) 9. Nf3 (9. h3 $14 Bd7 10. Nf3) 9... c4 (9... Bh3! $15 10. O-O O-O) 10. O-O (10. h3 Be6 11. Ng5) 10... cxd3 11. Qxd3 Bh3 (11... O-O) 12. Be3 (12. e5 $14 Bf5 13. Qd1 dxe5 14. fxe5) 12... O-O 13. Rac1 Bxg2 14. Kxg2 Rd8 15. Rfd1 { [#] } (15. Bg1) 15... b6 (15... e5! $17) 16. Nd2 Ng4 (16... e5 $15) 17. Nd4 (17. Bg1!) 17... Nxe3+ 18. Qxe3 Na5 (18... e5 $15 19. Nxc6 Qxc6) 19. Qd3 Qb7 20. Kg1 { Cernjak,A (1663)-Glavac,I (1870) Slovenia 2015 0-1 (36) } (20. Nf1 { keeps the balance. })) 6... Bd7 7. d3 e5 8. f4 Be7 9. Nf3 h6 10. O-O Qb6 (10... O-O { is superior. }) 11. c4 Nh5 12. Kh2 (12. fxe5 $14 dxe5 13. g4) 12... g5 (12... exf4! 13. gxf4 O-O) 13. fxe5 (13. fxg5 $14 hxg5 14. Nxg5) 13... g4! 14. exd6 (14. hxg4 Bxg4 15. Bh3 Bxh3 16. Kxh3) 14... Bxd6 (14... gxf3 $15 { feels stronger. } 15. Bxf3 Nxg3 16. dxe7 Nxf1+ 17. Qxf1 Nxe7) 15. Nh4 O-O-O { ...Rhg8 is the strong threat. } 16. Nf5 Be5! 17. Nf4 Bxf5 18. exf5 Bxf4 (18... Nf6! $15) 19. Bxf4 Nxf4 20. Rxf4 { Perschke,U-Weber,P (2255) Bad Oeynhausen 1984 1-0 (51) }) 6. d3 { [%eval 0.03] } 6... Be7 { [%eval 0.2] } 7. c3 { [%eval -0.25] } (7. h3 Bd7 8. f4) 7... O-O { [%eval -0.07] } 8. Bg5?! { [%eval -0.7] } { Inaccuracy. h3 was best. } (8. h3 Bd7 (8... Bc8 9. Nf3 Nc6 10. O-O d5 11. d4 cxd4 12. cxd4 dxe4 13. Nxe5 Be6) 9. f4) 8... Re8 { [%eval -0.4] } (8... h6 9. Bxf6 Bxf6) 9. Bxf6 { [%eval -0.56] } 9... Bxf6 { [%eval -0.57] } (9... gxf6 10. f4) 10. h3 { [%eval -0.53] } 10... Bd7 { [%eval -0.44] } 11. f4?! { [%eval -1.13] } { Inaccuracy. a4 was best. } (11. a4) 11... exf4 { [%eval -1.07] } (11... Na6 12. f5 d5 13. exd5 Bxf5) 12. Nxf4 $17 { [%eval -1.0] } 12... Bc6 { [%eval -0.96] } 13. Qg4? { [%eval -2.31] } { Mistake. Nge2 was best. } (13. Nf3 $17) (13. Nge2 Nd7 14. O-O b5 15. Qe1 g6 16. Qf2 Bg7 17. Rad1 Rc8 18. a3 Qe7) 13... Bd7? { [%eval -0.95] } { Mistake. Nd7 was best. } (13... Nd7 14. O-O-O (14. h4 Qa5 15. Qd1 d5 16. Nge2 dxe4 17. Bxe4 Qb6 18. Qb3 Bxe4 19. dxe4) 14... b5) 14. Qd1 { [%eval -1.01] } 14... Be6? { [%eval 0.19] } { Mistake. Bc6 was best. } (14... Bc6 15. Nge2) 15. Nge2 { [%eval 0.01] [%cal Be4e5] } 15... Nc6 { [%eval 0.22] } 16. O-O { [%eval 0.19] } 16... Qb6 { [%eval 0.42] } 17. Qd2 { [%eval 0.14] } 17... Rad8?! { [%eval 0.81] } { Inaccuracy. Bg5 was best. } (17... Bg5 18. Qc2 Bh6 19. Kh2 Rf8 20. b3 g6 21. Rad1 Rac8 22. Qd2 Ne7 23. Qe1) 18. Nh5?! { [%eval 0.22] } { Inaccuracy. Nd5 was best. } (18. Nd5 Bxd5 19. exd5) 18... Be7 { [%eval 0.3] } 19. Nef4 { [%eval 0.15] } 19... Bg5 { [%eval 0.13] [%cal Be7g5,Bg5h6,Bh6e3] } 20. h4 { [%eval 0.01] } 20... Bh6 { [%eval 0.09] } 21. Qf2 { [%eval -0.09] } 21... Ne5 { [%eval -0.08] [%cal Bd6d5] } 22. Nxe6 { [%eval -0.2] } 22... Rxe6 { [%eval 0.0] } 23. d4? { [%eval -1.61] } { Mistake. Kh1 was best. } (23. Kh1 Re7 24. Qe2 Ng6 25. Qf2) 23... cxd4 $19 { [%eval -1.58] } 24. cxd4 { [%eval -1.57] [#] Black must now prevent Kh1. } 24... Rg6?? { [%eval 3.52] } { Blunder. Rf8 was best. } (24... g6?! 25. Nf6+ (25. dxe5? Be3 $19) 25... Rxf6 26. Qxf6 Be3+ 27. Kh1 Bxd4 28. Rad1) (24... Rf8 25. Nf4 (25. dxe5? Be3 $19) 25... Bxf4 26. gxf4 Ng4) 25. dxe5?? { [%eval -4.27] } { Blunder. Kh1 was best. } (25. Kh1 Rf8 26. dxe5 dxe5 27. Rad1 Qxf2 28. Rxf2 Be3 29. Rc2 Bd4 30. b3 Kh8) 25... Be3 { [%eval -3.95] } 26. Nf4?! { [%eval -4.99] } { Inaccuracy. e6 was best. } (26. Nf6+? gxf6 27. Rae1 Bxf2+) (26. e6 Bxf2+ 27. Rxf2 fxe6 28. Bf3 Rf8 29. Kg2 Qe3 30. Raf1 Rh6 31. Re2 Qc5) 26... Rxg3 { [%eval -4.83] } { Weighted Error Value: White=0.74/Black=0.52 } { PRECISÃO: BRANCAS .64% PRETAS 77% } 0-1


[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.5"]
[White "Carlos Alberto, de Carvalho"]
[Black "Klebson, Rodrigues Dos Reis"]
[Result "1/2-1/2"]
[WhiteElo "1941"]
[BlackElo "1779"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "D00"]
[Opening "Queen's Pawn Game: Levitsky Attack"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Carlos Alberto, de Carvalho - Klebson, Rodrigues Dos Reis"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/62Ysjxh0"]

1. d4 { [%eval 0.15] } 1... d5 { [%eval 0.27] } 2. Bg5 { [%eval -0.18] } 2... Nc6 { [%eval -0.05] } 3. c3 { [%eval -0.32] } 3... Bf5 { [%eval -0.16] } 4. Nd2 { [%eval -0.09] } 4... Qd7 { [%eval -0.09] } 5. f3 { [%eval -0.33] [%cal Bf2f3,Bf3e4] } 5... O-O-O?! { [%eval 0.56] } { Inaccuracy. f6 was best. } (5... h6 6. Bf4 Nf6) (5... f6 6. Bh4 e5 7. e4 Be6 8. Bb5 exd4 9. cxd4 dxe4 10. Bxc6) 6. e4 $14 { [%eval 0.28] } 6... dxe4? { [%eval 1.49] } { Mistake. Bg6 was best. } (6... Bg6 7. Bb5 f6 8. Be3 a6 9. Ba4 e5 10. Ne2 Nh6 11. h3) 7. fxe4 $18 { [%eval 1.46] } (7. Nxe4 f6 8. Be3 e5) 7... Bg4 { [%eval 1.71] } 8. Qa4 { [%eval 1.68] } { White is clearly better. } 8... Kb8 { [%eval 1.89] } 9. Bb5?! { [%eval 1.15] } { Inaccuracy. Ngf3 was best. } (9. Ngf3 f6 10. d5 Nd4 11. Qxd4 e5 12. Qd3 Bxf3 13. Nxf3 fxg5 14. Nxg5 Bd6) 9... Qd6? $146 { [%eval 2.71] } { Mistake. a6 was best. } (9... a6 10. Bxc6 Qxc6 11. Qxc6 bxc6 12. h3 (12. Ngf3 f6 13. Be3 Kc8 14. O-O Re8 15. b4) 12... Be6 (12... Bc8) (12... Bd7) 13. Ngf3 $16 f6 { Prevents Ne5. } 14. Bf4 (14. O-O) 14... g5 (14... h5) 15. Bg3 (15. Bxg5! { Black must now prevent Bh4. } 15... fxg5 16. Nxg5) 15... g4 16. hxg4 Bxg4 17. Rh4 (17. e5 $16) (17. Nb3 $16) 17... h5! $14 18. Nh2 Nh6 (18... Be6) 19. Nxg4 $16 Nxg4 20. Ke2! { Nb3 is the strong threat. } 20... e6 (20... e5 $16 { might work better. }) 21. Kf3? (21. Rah1 $18) 21... Be7 (21... c5 { remains equal. }) 22. Rh3 (22. Rah1 $16) 22... f5 (22... c5) 23. exf5 (23. Re1!? { [%cal Re4f5] }) 23... exf5 { [#] } (23... Rdf8 $14) 24. Re1 { carevchess (1952)-FocusAR (1782) lichess.org 2024 1-0 (43) } (24. Rah1!)) 10. Ngf3 { [%eval 2.32] } 10... f6?! { [%eval 3.06] } { Inaccuracy. Bxf3 was best. } (10... Bxf3 11. gxf3 a6 12. Bxc6 Qxc6 13. Qxc6 bxc6 14. Nc4 f6 15. Be3 e6 16. O-O-O) 11. Bh4?! { [%eval 1.85] } { Inaccuracy. Be3 was best. } (11. Nc4 Qe6 12. d5 (12. Bxc6 Qxc6 13. Qxc6 bxc6 $16) 12... Rxd5 13. Bxc6 Qxc6 14. Qxc6 bxc6 15. exd5) (11. Be3 a6 12. Bxa6 Na7 13. Bd3 Qd7 14. Qb3 e5 15. d5 Ne7 16. c4 Ng6) 11... Qf4? { [%eval 3.83] } { Mistake. a6 was best. } (11... a6 12. Be2 Nh6 13. b4 e5 14. d5 Na7 15. Bf2 Bc8 16. O-O Ng4 17. Bc5) 12. Bxc6?! { [%eval 2.44] } { Inaccuracy. O-O was best. } (12. O-O e5 13. Bg3 Qh6 14. Bxc6 Bc8 15. Qb3 Ne7 16. Ba4 g5 17. Nc4 Ng6) 12... bxc6?! { [%eval 3.61] } { Inaccuracy. Qe3+ was best. } (12... Qe3+ 13. Kd1 bxc6 14. Qb4+ (14. Qxc6 Qd3 $16) (14. Qb3+ Ka8 15. Qc4 e5 16. Qxc6+ Kb8 17. Qb5+ Ka8 18. Re1) 14... Kc8) 13. Qxc6? { [%eval 1.9] } { Mistake. O-O was best. } (13. Bf2 a6 14. Qxa6) (13. O-O Bxf3 14. Nxf3 Qxe4 15. Bf2 Nh6 16. Rae1 Qd3 17. d5 Qb5 18. Qxa7+ Kc8) 13... e5?! { [%eval 3.05] } { Inaccuracy. Qe3+ was best. } (13... Qe3+ 14. Kd1 Qd3 15. Qc4 Qxc4 16. Nxc4 h5 17. Kc2 g5 18. Bf2 h4 19. h3) 14. dxe5?? { [%eval 0.0] } { Blunder. O-O was best. } { [#] } (14. Qb5+ $18 Ka8 15. O-O-O (15. dxe5 Qe3+ 16. Kf1 Bc5 $18)) (14. O-O Ne7 15. Qb5+ Ka8 16. Bg3 Bd7 17. Qc4 Qg4 18. dxe5 Nc6 19. Nd4 Nxd4) 14... Bxf3?? { [%eval 2.2] } { Blunder. Qe3+ was best. } (14... Ne7? 15. Qb5+ Ka8 16. O-O-O $18) (14... Rxd2! { and Black has nothing to worry. } 15. Qb5+ (15. Nxd2 { gets mated. } 15... Qe3+ 16. Kf1 Be2+ 17. Ke1 Bf3+ 18. Kf1 Qe2+ 19. Kg1 Qxg2#) (15. Qe8+ Kb7) 15... Kc8 16. Nxd2 (16. Qa6+ Kd8) 16... Qe3+ 17. Kf1 Qxd2) (14... Qe3+ 15. Kf1 Rxd2 16. Qb5+ Kc8 17. Nxd2 Qxd2 18. Qe8+ Qd8 19. Qb5) 15. Nxf3 $18 { [%eval 2.17] } 15... Qe3+ { [%eval 2.28] } 16. Kf1 { [%eval 2.08] } 16... Bc5?! { [%eval 2.9] } { Inaccuracy. Qd3+ was best. } (16... Qd3+ 17. Kg1 Ne7 18. Qa4 Nc8 19. h3 Bc5+ 20. Kh2 Nb6 21. Qb3 g5 22. Rad1) 17. Qb5+ { [%eval 3.06] } 17... Bb6 { [%eval 2.93] } 18. Re1 { [%eval 2.89] } 18... Qf4?! { [%eval 3.76] } { Inaccuracy. c6 was best. } (18... c6 19. Qc4 Qh6 20. exf6 Nxf6 21. Qxc6 Qxh4 22. Nxh4 Rd2 23. Rb1 Rhd8 24. Nf3) 19. Bg3 { [%eval 3.71] } 19... Qg4 { [%eval 3.74] } 20. a4 { [%eval 3.4] [%cal Ba2a4,Ba4a5] } 20... Qd7 { [%eval 3.75] } 21. Qxd7 { [%eval 3.69] } 21... Rxd7 { [%eval 3.64] } 22. b4 { [%eval 3.02] } 22... a6 { [%eval 3.63] } 23. Ke2 { [%eval 3.4] } { Against Rd3 } (23. a5 Ba7 24. Ke2 Nh6 $18) 23... Ne7 { [%eval 4.09] } 24. exf6 { [%eval 4.21] } { White is clearly winning. } 24... gxf6 { [%eval 4.15] } 25. a5 { [%eval 3.96] } 25... Ba7 { [%eval 4.11] } 26. Rd1 { [%eval 4.0] } 26... Rhd8 { [%eval 4.2] } 27. Rxd7 { [%eval 4.12] } 27... Rxd7 { [%eval 4.15] } 28. Rd1 { [%eval 4.15] } 28... Rxd1 { [%eval 4.16] } 29. Kxd1 { [%eval 4.13] } 29... Kb7 { [%eval 4.27] } 30. Kd2 { [%eval 3.97] } 30... f5 { [%eval 4.22] } 31. e5 { [%eval 4.19] } 31... c5 { [%eval 4.22] } 32. bxc5 { [%eval 4.07] } 32... Bxc5 { [%eval 3.72] } { Weighted Error Value: White=0.66/Black=0.94. An unexpected result. } { PRECISÃO: BRANCAS 85% PRETAS 81% } 1/2-1/2


[Event "II TORNEIO INTERNO CXG 2026"]
[Site "Av. Churchill, 109 sl 101 - C"]
[Date "2026.05.14"]
[Round "5.6"]
[White "Carlos Alberto, Braga Mendes"]
[Black "Ruben, Barat"]
[Result "0-1"]
[WhiteElo "1788"]
[BlackElo "1742"]
[Annotator "Chessbase-Stockfish 18"]
[Variant "Standard"]
[ECO "D06"]
[Opening "Queen's Gambit Declined: Marshall Defense"]
[StudyName "II TORNEIO INTERNO CXG 2026 - TROFÉU MARCOS KATZ - ROD 5"]
[ChapterName "Carlos Alberto, Braga Mendes - Ruben, Barat"]
[ChapterURL "https://lichess.org/study/QAuuP4HS/o9sOLdIp"]

1. d4 { [%eval 0.15] } 1... d5 { [%eval 0.27] } 2. c4 { [%eval 0.22] } 2... Nf6 { [%eval 0.52] } 3. Nc3 { [%eval 0.0] } 3... Nc6 { [%eval 0.43] } 4. Nf3 { [%eval 0.38] } 4... e6 { [%eval 0.5] } 5. Bg5 { [%eval 0.4] } 5... Be7 { [%eval 0.42] } 6. e3 { [%eval 0.43] } 6... b6?! { [%eval 1.14] } { Inaccuracy. a6 was best. } (6... a6 7. Rc1 h6 8. Bf4 Bd6 9. Bg3 O-O 10. a3 Re8 11. Ne5) 7. cxd5 { [%eval 0.92] } 7... exd5? { [%eval 2.19] } { Mistake. Nxd5 was best. } (7... Nxd5 8. Bxe7 (8. Bb5 Bd7 9. Nxd5 exd5 10. Rc1 Bxg5 11. Bxc6 Bxc6 12. Rxc6) (8. Qa4 Bd7 9. Nxd5 exd5) 8... Ndxe7 (8... Ncxe7 $14 9. Nxd5 exd5) (8... Qxe7 9. Bb5 Bd7 10. Nxd5 (10. Rc1! $18 { and White stays clearly on top. Nxd5 is the strong threat. } 10... Qb4 11. a3 Nxc3 12. axb4 Nxd1 13. Bxc6 Bxc6 14. Rxc6 Nxb2 15. Ke2) 10... exd5 $16 11. O-O! Qb4 (11... O-O $16) 12. Qd3 (12. Bxc6 $18 Bxc6 13. Qc2) 12... a6 (12... Nb8 $16) 13. Bxc6 $18 Bxc6 14. Rfc1 Bb5 15. Qf5 Qd6 16. Qe5+? (16. Ng5 $18 Qe7 17. Qxd5) 16... Qxe5 $14 17. Nxe5 Rc8 (17... f6 { is superior. } 18. a4 Be2) 18. Rc3 (18. a4 $14 Bd7 19. a5) 18... f6 19. Nf3 c6 20. Rac1 a5 21. Rb3 a4? (21... Rb8) 22. Rxb5! { Camposano Reyes,J (1700)-Toledo Samaniego,J (1438) Cuenca 2025 1-0 }) 9. Bb5 O-O 10. O-O Bb7 11. Rc1 Nf5 (11... Nb8 $14) 12. d5 $16 Nce7? (12... exd5 $16 13. Qxd5 Nfe7) 13. dxe6 $18 fxe6 14. Bc4? (14. Ng5 $18 { has better winning chances. }) 14... Rf6? (14... Nd5 $16) 15. Qe2? (15. e4 $18) 15... Nd6! $14 16. Bb3 (16. Ne5 $14) 16... Bxf3 17. gxf3 Qe8 18. Kh1 Qh5 (18... Nef5) 19. f4 $16 Qh3 { [#] } 20. Rg1! Rh6 { [#] [%csl Gh6][%cal Rh3h2] } 21. f3 (21. Rg2! $16) 21... Nef5 22. Ne4 { Richter,W (2465)-Naumann,P Leipzig 1994 1-0 (38) }) 8. Bd3?! { [%eval 1.02] } { Inaccuracy. Bb5 was best. } (8. Qa4 $18 Bd7 9. Bxf6 Bxf6 10. Nxd5) (8. Bb5 Bd7 9. Qa4 Nb4 10. Ne5 Bxb5 11. Qxb5+ c6 12. Nxc6 a6) 8... a5? $146 { [%eval 2.22] } { Mistake. O-O was best. } (8... Bb7 9. O-O O-O 10. a3 a5 (10... h6) 11. Rc1 $16 Ng4 (11... Nb8 $16) 12. Bxe7 Nxe7 13. Bxh7+! Kxh7 14. Ng5+ Kg8 15. Qxg4 Re8? (15... Bc8 { is more resistant. } 16. Qh4 Bf5) 16. f4 Ba6 17. Rf3 Qd6 18. f5 Qf6 19. Qh4 { And now Qh7+ would win. } 19... Qh6 20. Qg4 { Threatens to win with Rh3. } 20... Qf6? (20... Bc8 21. Nb5 f6) 21. Qh5 $18 Qh6 22. Qxf7+ Kh8 23. Rh3 { Spasov,I (1435)-Pakkoutis,N (1162) Tornelo INT 2021 1-0 }) (8... Bg4? { 8...0-0 1.10 } 9. Rc1 (9. Qa4 $18 Bd7 10. Bb5) 9... Nb4 (9... O-O $16 { was necessary. }) 10. Bb1 Ne4? (10... c5 11. dxc5 bxc5) 11. Bxe7 $18 Qxe7 12. Qa4+ (12. a3) 12... c6? (12... Bd7 13. Qb3 Nxc3) 13. Ne5 Bf5 14. Nxe4 Bxe4 15. Bxe4 dxe4 16. Nxc6? (16. a3 $18) 16... Nd3+ $14 17. Kf1 Qd7 18. Rc2 { [%cal Bd4d5] } 18... O-O 19. Ke2? (19. h3) 19... a6? (19... Qg4+ $19 20. Kd2 Qxg2) 20. Rd1? (20. f3) 20... Rfe8? (20... b5 $19 21. Qa5 Qg4+ 22. Kd2 Qxg2) 21. Qa3? (21. Kf1 { and White stays safe. }) 21... Qf5? (21... Qg4+ $19 22. Kd2 Qxg2) 22. Rxd3 { Hoping for Rd1. } 22... exd3+ 23. Qxd3 { Luna Barrios,F (1622)-Cachihuango Giraldo,J (1386) Medellin COL 2024 1-0 (63) }) (8... Ng4 9. Bxe7 Nxe7 10. h3 Nf6 11. O-O Bb7 12. Ne5 Ne4? (12... O-O $16) 13. Nxe4 $18 dxe4 14. Bc2? (14. Qa4+ $18 Kf8 15. Bc4) 14... Bd5? (14... O-O $14) 15. Bb3? (15. f3 $18 O-O 16. fxe4) 15... Nc6? (15... O-O $14) 16. Ba4 $18 Qd6 17. Rc1 O-O 18. Bxc6 Rad8 19. Bxd5 Qxd5 20. a3 f6 21. Nc4 a5 22. Nd2 c5 23. Qb3 { Gregusova,K-Dancejova,K Sliac 2011 1-0 (46) }) (8... O-O 9. Rc1 Bb7 10. O-O Re8 11. a3 h6 12. Bh4 Nh5 13. Bxe7 Nxe7 14. Ne5) 9. O-O?! { [%eval 1.28] } { Inaccuracy. Bb5 was best. } (9. Qa4 $18 { is more deadly. } 9... Bd7 10. Bb5) (9. Bb5 Bd7 10. Bxf6 Bxf6 11. Nxd5 Ne7 12. Bxd7+ Qxd7 13. Nxf6+ gxf6 14. O-O O-O-O) 9... Ba6? { [%eval 2.6] } { Mistake. O-O was best. } (9... O-O 10. Rc1 Bb7 11. a3 h6 12. Bf4 Bd6 13. Bxd6 Qxd6 14. Nb5 Qd8 15. Rc2) 10. Bxa6 $18 { [%eval 2.61] } 10... Rxa6 { [%eval 2.68] } 11. a3?! { [%eval 1.8] } { Inaccuracy. Bxf6 was best. } (11. Bxf6 Bxf6 12. Qa4 Qd7 13. Qb5 Ra7 14. Nxd5 Ne7 15. Nxf6+ gxf6 16. Qe2 O-O) 11... Qb8?? { [%eval 3.94] } { Blunder. Nb8 was best. } (11... Nb8 12. Qe2 (12. Bxf6 Bxf6 13. b4 axb4 14. axb4 Rxa1 15. Qxa1 O-O 16. b5 Qd6 17. Qa2) 12... c6) 12. Bxf6 { [%eval 3.84] } 12... Bxf6 { [%eval 3.79] } 13. Nxd5 { [%eval 3.66] } 13... Bd8 { [%eval 3.96] } 14. Rc1 { [%eval 3.82] } 14... b5 { [%eval 3.98] } 15. Qd3 { [%eval 3.22] } 15... O-O { [%eval 3.24] } 16. Nd2 { [%eval 2.6] [%cal Bf3d2,Bd2e4,Be4c5,Bc5e6] } 16... Ne7 { [%eval 2.61] } 17. Nf4 { [%eval 2.22] } 17... Ng6 { [%eval 2.84] } 18. Nh5 { [%eval 2.28] } 18... c6 { [%eval 2.69] } 19. Ne4 { [%eval 2.55] } 19... f6? { [%eval 4.21] } { Mistake. Be7 was best. } (19... Re8 { is a better defense. } 20. f4 Nf8) (19... Be7 20. Nc5 Ra7 21. Ng3 Rc8 22. Qf5 a4 23. Rc2 Bxc5 24. Qxc5 Ne7 25. Nf5) 20. Nc5 { [%eval 4.24] } 20... Ra7 { [%eval 4.23] } 21. Ne6 { [%eval 4.32] } { Tempo.  Weighted Error Value: White=0.45/Black=0.92. Loss on time!? } { PRECISÃO: BRANCAS 89% PRETAS 81% } 0-1


