[Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "1"] [White "Segal, Alexandru"] [Black "van Riemsdijk, Herman C"] [Result "1-0"] [ECO "A32"] [Annotator "Stockfish 16"] [PlyCount "71"] [EventDate "2024.??.??"] {[%evp 11,71,0,-15,-15,-13,-3,-5,-13,-4,-40,10,7,18,13,15,19,18,2,3,-57,-50, -66,-13,-10,-5,-26,-24,-37,-12,-22,-14,-12,0,-3,0,-23,-3,-3,-5,-11,0,0,0,0,0,0, 0,0,0,-2,0,0,0,0,551,553,553,555,555,554,554,536]} 1. d4 Nf6 2. c4 c5 $6 { Inaccuracy. e6 was best.} (2... e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4) 3. Nf3 $6 {Inaccuracy. d5 was best.} (3. d5 b5 4. cxb5 a6 5. e3 Qa5+ 6. Bd2 Qb6 7. Nc3 axb5) 3... cxd4 4. Nxd4 e6 5. a3 b6 6. Nc3 Bb7 7. f3 $146 { E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 .} (7. Bg5 a6 8. e4 d6 9. Bd3 Be7 10. O-O O-O 11. Kh1 Nbd7 12. f4 Nc5 13. e5 dxe5 14. fxe5 Nfd7 15. Bxe7 Qxe7 16. Bxh7+ Kxh7 {0-1 (27) Jonsson, O-Bergstrom,C Bremen 1976}) 7... Nc6 8. e4 Nxd4 9. Qxd4 {The position is equal. } Bc5 10. Qd3 O-O $6 $146 {Inaccuracy. d5 was best.} (10... d5 11. cxd5 exd5 12. b4 {[#]} (12. Bg5 O-O 13. O-O-O dxe4 14. Nxe4 Qxd3 15. Bxd3 Nxe4 16. Bxe4 Bxe4 17. fxe4) 12... Bd6 $1 13. Qb5+ {[#]} Kf8 $1 14. Bb2 dxe4 15. O-O-O $2 ( 15. Be2 $17) 15... exf3 16. Kb1 fxg2 17. Bxg2 Bxg2 18. Rhg1 Bb7 19. Rxg7 Kxg7 $2 (19... Qe7 $19 20. Rgg1 Be5) 20. Qg5+ Kf8 21. Qh6+ $1 Ke8 22. Nb5 $1 { [%CAl Rb5d6]} Be4+ 23. Ka1 $1 Be7 (23... Bxh2 $5 {[%CAl Rd8d1]} 24. Rxd8+ Rxd8 $17) 24. Rxd8+ Rxd8 25. Bxf6 {Rocha,W (2325)-Leitao,R (2515) Rio de Janeiro 1998 0-1 (36)}) (10... Qb8 {[%eval -24,0] 10...d5} 11. Be3 O-O 12. O-O-O Bxe3+ 13. Qxe3 Rd8 14. e5 Ne8 $1 15. Bd3 d6 16. f4 dxe5 17. fxe5 Qc7 (17... Bxg2 18. Rhg1 Bc6) 18. Rhf1 (18. Rhg1 $16) 18... Rd7 (18... Bxg2 {remains equal.} 19. Rf4 g6) 19. Rf4 Rad8 20. Rh4 (20. g3 $16) 20... h6 21. Rh3 (21. g3 $14) 21... Kf8 (21... Bxg2 $17 22. Rg3 Bc6) 22. g4 Qc5 (22... Ba6 $1) 23. Qe2 (23. Qxc5+ $14 bxc5 24. Na4) 23... a6 (23... a5) 24. Rf1 (24. b4 $14 Qd4 25. Kc2) 24... Bg2 25. Qxg2 {Pradeep,K (2250)-Grover,S (2306) Nagpur 2008 1/2-1/2 (39)}) 11. Bg5 d5 12. exd5 exd5 {...Re8+ is the strong threat.} 13. O-O-O $1 {[%CAl Rc4d5] } h6 14. Bxf6 Qxf6 15. cxd5 $6 {Inaccuracy. Nxd5 was best.} (15. Nxd5 Bxd5 16. cxd5 b5 17. Kb1 Bd6 18. Qb3 Rfb8 19. Rd2 Rb7 20. Rc2 Rab8 21. Bd3 g6) 15... Rac8 $15 16. Kb1 Rfd8 $6 {Inaccuracy. Bxa3 was best.} (16... Bxa3 17. bxa3 Rxc3 $15) 17. Ne4 Qe5 {[%CAl Rb7d5]} 18. Nxc5 (18. d6 {is more complex.} g6 19. Be2 Bxe4 20. Qxe4 Qxe4+ 21. fxe4 Rxd6 22. e5) 18... Rxc5 19. Qe4 Rdxd5 20. Rxd5 Qxd5 21. Qxd5 Rxd5 {[%mdl 4096] Endgame KRB-KRB} 22. Be2 Re5 23. Bd1 Kf8 24. Kc1 Ke7 25. Kd2 Kf6 26. Be2 Rg5 27. g3 Rf5 28. Rf1 Rd5+ 29. Kc3 Re5 30. Rf2 Re3+ 31. Kd4 Rb3 32. Bd3 Bc8 $4 {[%mdl 8192] Blunder. Bc6 was best.} (32... Bc6 33. f4) 33. Bc4 $18 {White is clearly winning.} Be6 {intending ...Bxc4.} 34. Bxb3 Bxb3 35. Re2 b5 36. Re3 {PRECISÃO CHESSBASE: Brancas 76%,Pretas 76%. PRECISÃO LICHESS: Brancas 97% Pretas 85%} 1-0 [Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "2"] [White "Segal, Alexandru"] [Black "Braga, Cicero Nogueira"] [Result "1-0"] [ECO "E63"] [Annotator "Stockfish 16"] [PlyCount "75"] [EventDate "2024.??.??"] {[%evp 28,75,35,39,103,78,129,122,361,364,339,240,340,339,366,353,327,191,259, 217,433,291,358,368,360,364,345,296,367,368,347,350,309,205,194,194,349,342, 305,275,247,203,253,205,477,468,479,475,675,670]} 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. d4 Nc6 7. O-O a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 bxc4 13. bxc4 Bh6 14. f4 e5 15. dxe6 fxe6 {E66: King's Indian: Fianchetto: 6...c5 7 0-0 Nc6 8 d5.} (15... Bxe6 $14 16. Nd5 Rxb2 17. Qxb2 Bg7) 16. Nce4 (16. Rab1 Bb7 (16... Bg7 $16 {was necessary.}) 17. e4 $2 (17. Nce4 $18 ) 17... e5 18. Nd5 Nc6 19. Nf3 Nd4 $1 20. Bxd4 exd4 (20... Bxd5 $1 21. cxd5 cxd4) 21. Nxf6+ (21. e5 $1 $16 Nxd5 22. cxd5) 21... Qxf6 22. e5 Qd8 (22... dxe5 $1 23. Nxe5 Bxg2 24. Qxg2 Qe6) 23. Rxb7 Rxb7 24. Nxd4 $1 cxd4 25. Bxb7 Qb6 $2 { [%mdl 8192]} (25... dxe5 $16 26. Bd5+ Kg7) 26. Bd5+ Kh8 27. exd6 (27. e6) 27... Qxd6 28. Qe4 Bg7 29. g4 $2 (29. Kg2 $18) 29... Qc5 30. Kg2 Qa3 {Foldi,K (2098) -Cselenyi,B (2199) Hungary 2009 1-0 (45)}) 16... Bg7 $146 {Threatens to win with ...Rxb2!} (16... Nxe4 17. Bxe4 d5 18. Bg2 Rxb2 19. Qxb2 Bg7 20. Qc2 Bxa1 21. Rxa1 dxc4 {[#]} (21... Qf6 22. Rc1 Qd4+ 23. Kh1 dxc4) 22. Nf3 $1 Bb7 23. Rd1 Qe7 24. Ne5 Bxg2 25. Kxg2 Rd8 26. Rc1 Qd6 27. Nf3 Qd5 28. Qa4 Qe4 {[#]} ( 28... Nb7 $16 {was called for.}) 29. Kf2 $1 Nc6 30. Qxa6 Nd4 31. Qxc4 { Portisch,L-Sax,G Budapest 1975 1/2-1/2 (90)}) (16... Rxb2 17. Qxb2 Nxe4 18. Bxe4 Bg7 19. Qa3 Bxa1 20. Rxa1 Qf6 21. Rd1 Qd4+ 22. e3 Nxc4 23. exd4 Nxa3 24. dxc5 d5 (24... dxc5 $14 25. Rc1 Nb5) 25. Bd3 Bb7 26. Rc1 $1 Rc8 27. Nb3 (27. Kf2 $16) 27... Nc4 28. Bxc4 dxc4 29. Rxc4 Bd5 30. Rc2 Kf7 31. Kf2 {Boehlig,H (2310)-Mirschinka,D (2240) Germany 1992 1/2-1/2 (35)}) (16... Ng4 17. Nb3 Nxb3 18. axb3 Qb6 (18... Bg7 19. Bxg7 Kxg7 20. Qc3+ Kg8 21. Rfd1 Bb7 22. Rxd6 Qe7 23. Rad1 Bxe4 {is a better defense.} (23... Rfd8 24. Rxd8+ Rxd8 25. Rxd8+ Qxd8 26. Nd2 Bxg2 27. Kxg2 {1-0 (27) Portisch,L (2630) -Van der Sterren,P (2400) Wijk aan Zee 1978}) 24. Bxe4 Rfd8 25. Rxd8+ Rxd8 26. Rxd8+ Qxd8)) 17. Bc3 Nb7 $4 {Blunder. Nxe4 was best.} (17... Nxe4 18. Nxe4 Bxc3 19. Qxc3 Bb7) 18. Nxf6+ $18 Bxf6 19. Ne4 $6 {Inaccuracy. Rab1 was best.} (19. Rab1 Qe7 20. Bxf6 Qxf6 21. Qd3 Qe7 22. Ne4 Bd7 23. Qc3 d5 24. cxd5 exd5 25. Ng5 d4) 19... Bxc3 $6 { Inaccuracy. Bd4+ was best.} (19... Bd4+ 20. Bxd4 cxd4 21. Qb2 Bd7 22. Qxd4 Bc6 23. Rfd1 Bxe4 24. Bxe4 Qc7 25. Rab1 Nc5 26. Rxb8) 20. Qxc3 Qe7 21. Rad1 Bd7 22. Qd3 $2 {Mistake. Rb1 was best.} (22. Rb1 Qg7 23. Qxg7+ Kxg7 24. Rb6 Na5 25. Rxd6 Bc8 26. Nxc5 e5 27. Bd5 exf4 28. Rxf4 Rxf4) 22... Ba4 $6 {Inaccuracy. Bc6 was best.} (22... Bc6 23. Rd2 (23. Nxd6 $2 Bxg2 24. Kxg2 Rfd8 $19) 23... Rbd8) 23. Rd2 Rfd8 $2 {Mistake. Bc6 was best.} (23... Bc6 24. Rfd1 (24. Nxd6 $2 Bxg2 25. Kxg2 Rbd8 $19) 24... e5 (24... Rbd8 25. Nf6+ Rxf6 26. Bxc6 Na5 27. Bg2 Qc7 28. Qe4 Kg7 29. h4 h5 30. Kh2)) 24. Qa3 $6 {Inaccuracy. Qc3 was best.} (24. Qc3 Qg7 25. Rb1 Qxc3 26. Nxc3 Na5 27. Rxb8 Rxb8 28. Rxd6 Nxc4 29. Rxe6 Bb5 30. Bd5 Kf8) 24... Bc6 {[#]} 25. Nf6+ $1 {[%mdl 576] Discovered Attack} Qxf6 26. Bxc6 Qe7 27. Rb1 $6 {Inaccuracy. Qxa6 was best.} (27. Qxa6 Qc7 28. Rb1 Na5 29. Rxb8 Rxb8 30. Bb5 Rd8 31. Rd3 Nb7 32. Kg2 Rc8 33. Ra3 Nd8) 27... Qc7 $6 {Inaccuracy. Rdc8 was best.} (27... Rdc8 28. Bxb7 Rxb7 29. Rxb7 Qxb7 30. Rxd6 Qb1+ 31. Kf2 Qh1 32. h4 e5 33. Qf3 Qh2+ 34. Ke1) 28. Qxa6 Na5 29. Rxb8 Rxb8 30. Bf3 $6 { Inaccuracy. Bb5 was best.} (30. Bb5 Nb7 31. Kg2 Kg7 32. Rd3 Kf6 33. Qa7 Rc8 34. Ra3 Nd8 35. Qxc7 Rxc7 36. Ra6 Ke7) 30... Rb6 31. Qa8+ Rb8 $2 (31... Kg7 32. Qe4 Kf7 33. Qd3 Rb4 34. Qxd6 Qxd6 35. Rxd6 Ke7 36. Ra6 Nxc4 37. Ra7+ Kd6 38. Kf2) 32. Qe4 Qe7 33. Kf2 $6 {Inaccuracy. Rd3 was best.} (33. Rd3 Kf7 34. Ra3 Qc7 35. Kg2 Rc8 36. h4 h5 37. g4 Kf6 38. Re3 Qd7 39. g5+ Kf7) 33... Kf7 {intending ... Rb4.} 34. Qd3 Rb6 35. Qc3 Nc6 $2 {Mistake. Rb4 was best.} (35... Rb4 36. a3 ( 36. f5 Nxc4 37. fxe6+ Kg8 38. Rd1 Ne5 39. Bd5 Kg7 40. a3 Rb8 41. Kg2 Rf8 42. Rb1) 36... Ra4) 36. Bxc6 {White is clearly winning.} Rxc6 37. Qh8 {And now Rb2 would win.} h5 $6 {Inaccuracy. Qf8 was best.} (37... Qf6 38. Qa8 Rc7 39. Rxd6 Qe7) (37... Qf8 38. Qxh7+ Qg7 39. Qxg7+ Kxg7 40. a4 Ra6 41. a5 Kf6 42. Ra2 Kf5 43. Kf3 d5 44. g4+) 38. Rb2 {PRECISÃO CHESSBASE: Brancas 64%, Pretas 25%. PRECISÃO LICHESS: Brancas 92% Pretas 85%} 1-0 [Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "3"] [White "Braga, Cicero Nogueira"] [Black "van Riemsdijk, Herman C"] [Result "1/2-1/2"] [ECO "A13"] [Annotator "Stockfish 16"] [PlyCount "80"] [EventDate "2024.??.??"] {[%evp 9,80,48,82,60,92,55,88,60,70,56,65,6,22,-16,-19,-36,28,23,13,-129,-129, -141,-130,-129,-125,-110,-111,-124,-118,-119,-119,-117,-18,-21,-21,-17,-14,-6, -5,-5,-5,-34,-30,-36,-38,-31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0]} 1. c4 e6 2. Nf3 b6 3. Nc3 Bb7 4. e4 Bb4 5. Bd3 d6 $146 (5... Bxc3 6. dxc3 d6 7. Nd4 Nd7 8. b3 (8. Bc2 $14) 8... Nc5 9. f3 Nxd3+ 10. Qxd3 Ne7 11. Bg5 Qd7 12. a4 f6 13. Bh4 e5 14. Nc2 g5 15. Bf2 f5 16. Ne3 f4 (16... fxe4 $17 17. fxe4 O-O) 17. Nd5 Nxd5 18. cxd5 a5 19. Qb5 Ba6 20. Qxd7+ {Nepomniachtchi,I (2792) -Kasparov,G (2812) Zagreb CRO 2021 1/2-1/2}) (5... Ne7 6. O-O O-O 7. Re1 f5 8. e5 Ng6 9. Bf1 Bxf3 10. Qxf3 Nc6 11. d4 Nxd4 12. Qd3 Nc6 13. f4 d6 14. exd6 Qxd6 15. Qxd6 cxd6 {0-1 (45) Huebner,R (2600)-Miles,A (2555) Bad Lauterberg 1977}) 6. O-O {A10: English Opening: Unusual Replies for Black.} Nd7 $146 (6... Bxc3 7. bxc3 Nf6 8. Qe2 Nbd7 9. Bc2 O-O 10. d4 e5 11. Bg5 Re8 12. d5 h6 13. Bh4 Nf8 $2 (13... Bc8 $15 {keeps the upper hand.}) 14. Ba4 N8d7 (14... Qe7 $16) 15. h3 (15. Bxd7 $18 Qxd7 16. Bxf6 gxf6 17. Nh4) 15... Kh7 (15... Bc8 $1) 16. Bxf6 gxf6 (16... Nxf6 $16 17. Bxe8 Qxe8) 17. Nh4 Rg8 18. Qh5 (18. f4 $16) 18... Nf8 (18... Nc5 $14 19. Bc2 Ba6) 19. Qxf7+ Rg7 20. Qh5 Rg5 21. Qe2 {Boe Olsen,M (2255)-Haugen,A Fister 1992 0-1 (33)} (21. Qf3 $18)) 7. Bc2 Ngf6 8. Re1 { White is better.} O-O 9. a3 Bxc3 $1 10. dxc3 (10. bxc3 $14 e5 11. d4) 10... e5 11. Nh4 Nc5 {[%CAl Rb7e4]} 12. Nf5 Bxe4 (12... g6 $15 13. Nh6+ Kg7) 13. Bxe4 Ncxe4 {[#]} (13... Nfxe4 14. b4 (14. Qg4 g6 $17)) 14. Rxe4 $1 {[%mdl 512]} (14. b4 Kh8) 14... Nxe4 $17 15. Qg4 {[%csl Gf5][%CAl Rg4g7][%mdl 64] Double Attack} g6 16. Nh6+ Kg7 {And now ...Nc5 would win.} 17. Qxe4 f5 18. Qd5 f4 19. Ng4 h5 20. Nxe5 {Threatens to win with Nd3.} dxe5 $6 {Inaccuracy. Rf5 was best.} ( 20... Rf5 21. Bxf4 Rxf4 22. Nf3 Qg8 23. Re1 Qxd5 24. cxd5 Rf5 25. Re7+ Kf6 26. Rxc7 Rxd5 27. Nd4) 21. Qxe5+ {[%mdl 64] [#] Double Attack} Qf6 22. Bxf4 $1 Rae8 23. Qxf6+ Rxf6 {[%mdl 4096] Endgame KRR-KRB} 24. Be3 $1 Kf7 25. c5 bxc5 26. Bxc5 Re2 27. b4 Rc2 28. Bxa7 {The position is equal.} Ra6 29. Bd4 Rxa3 { [%CAl Ra3a1]} 30. Re1 Rca2 31. h4 Ra1 32. Rxa1 Rxa1+ {KR-KB} 33. Kh2 Ke6 34. Kg3 Rh1 35. Bg7 Kf5 36. Bh6 Ke4 37. Bg7 Kd3 38. Be5 c6 39. Bf6 Ke4 40. f3+ Kf5 {PRECISÃO CHESSBASE: Brancas 72%, Pretas 80%. PRECISÃO LICHESS: Brancas 95% Pretas 96%} 1/2-1/2 [Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "4"] [White "van Riemsdijk, Herman C"] [Black "Segal, Alexandru"] [Result "0-1"] [ECO "D37"] [Annotator "Stockfish 16"] [PlyCount "80"] [EventDate "2024.??.??"] {[%evp 15,80,3,7,1,2,-7,0,-22,0,0,0,0,0,-17,-17,-23,-7,-100,-67,-69,-71,-70, -46,-61,-12,-19,-3,-7,0,0,0,1,13,2,25,27,44,9,33,6,9,0,0,0,-1,-20,-29,-104,-88, -92,-100,-157,-159,-146,-125,-135,-63,-286,0,-29988,-72,-29988,-29989,-29989, 574,-29988,-29989]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. e3 Nbd7 6. cxd5 exd5 7. Bd3 c6 8. O-O O-O 9. Rb1 $146 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} (9. Ne5 Re8 (9... Nxe5 10. dxe5 Ng4) 10. f4 c5 11. h3 Nf8 12. g4 Ne6 $2 (12... Ng6 $16) 13. g5 Nd7 $2 (13... Ne4 14. Nxe4 dxe4 15. Bxe4 g6) 14. Bxh7+ Kf8 15. Qh5 {[%csl Ge5][%CAl Rh5f7]} Nxe5 16. fxe5 {[%csl Gh5] [%CAl Rf1f7]} f5 17. Rxf5+ Bf6 18. gxf6 Nxd4 19. fxg7+ Ke7 20. Qf7# {1-0 (20) Blokhin,S (1956)-Tilahun,A (1953) chess. com INT 2023}) (9. Qc2 Re8 (9... h6 10. Nh4 Qc7 11. h3 Nb6 12. Bd2 Ng4 13. Nf3 Nf6 14. Rac1 Be6 15. Na4 Nxa4 16. Qxa4 Bd6 {1/2-1/2 (61) Iversen,O-Willy,O Kuortane 1976}) 10. Ne5 Nf8 11. Bd2 Ng4 12. Ne2 Bd6 13. f4 f6 14. Nxg4 Bxg4 15. b4 Rc8 16. Ng3 Be6 17. Rac1 Kh8 18. Kh1 a6 19. a4 Bd7 20. Qb1 b5 21. axb5 (21. a5 $16) 21... axb5 22. e4 dxe4 $1 23. Bxe4 Qb6 {Nemet,I (2380)-Portisch,L (2600) Biel 1998 1/2-1/2 (82)}) 9... Bd6 $146 (9... a5 10. a3 Bd6 11. b4 Qe7 (11... axb4 12. axb4 Re8 13. b5 Nf8 14. bxc6 bxc6 15. h3 Ng6 16. Qc2 Nh5 17. Bd2 Nh4 (17... Bd7 $14) 18. Nxh4 Qxh4 19. Bxh7+ Kh8 20. Bf5 $1 {[%CAl Rf5c8]} Be6 21. Be1 Qf6 22. Bxe6 Rxe6 23. Bd2 Qh4 24. Ra1 {Aksiuczyc,M (2070)-Xu,Y (2195) Szeged 1994 0-1 (33)}) 12. b5 Ne4 13. Qb3 Ndf6 14. Bb2 (14. bxc6 bxc6 15. Qc2) 14... Bf5 15. bxc6 bxc6 16. Qc2 Rac8 17. Rbc1 Rfe8 18. Ne5 c5 (18... Ng4 {keeps the balance.}) 19. f3 $1 {[%CAl Rf3e4]} cxd4 20. exd4 Qa7 21. Kh1 Qxd4 $2 (21... Nxc3 $16 {was called for.} 22. Bxf5 Rc7) 22. Nxe4 Rxc2 23. Bxd4 Rxc1 $2 (23... dxe4 {was necessary.} 24. Bxc2 Bxe5) 24. Nxd6 {Zysk,R (2425)-Lukacs,P (2500) Budapest 1987 1-0}) 10. b4 a6 11. a4 {The position is equal.} Qe7 12. b5 axb5 13. axb5 Ne4 14. Qb3 Ndf6 15. Ne2 Bd7 16. Ne1 $6 {Inaccuracy. bxc6 was best.} (16. bxc6 bxc6 17. Bb2) 16... c5 17. dxc5 $1 Nxc5 18. Qd1 Nxd3 19. Qxd3 Qe5 $6 {[%csl Gd6][%CAl Re5h2] Inaccuracy. Qe4 was best.} (19... Qe4 20. Qxe4 Nxe4 21. Nf3 Rfc8 22. Nfd4 Be5 23. Re1 f6 24. Bb2 h5 25. Nf3 Bd6 26. Nfd4) 20. Ng3 $1 Qe6 21. Bb2 Bxg3 22. hxg3 Ne4 23. Nf3 Nd6 24. Qc3 {[%csl Gb2][%CAl Rc3g7]} Qh6 25. b6 Nc4 26. Ba1 Ra6 27. Ne5 Bf5 $132 {[%mdl 2048] Black is not holding back} 28. Rb4 Qf6 (28... Rxb6 $6 29. Nxc4 Rxb4 30. Nd6 $16 (30. Qxb4 dxc4 31. Qxc4 Qc6)) 29. g4 Be6 { Threatening ...Rxa1!} 30. g5 Qxg5 31. Nxc4 $6 {Inaccuracy. f4 was best.} (31. f4 Qh6 (31... Qf6 32. f5 Rxa1 33. Qxa1 Nxe5 34. fxe6 Qxe6 35. Rbf4 Rd8 36. Qd4 Rd6 37. e4 f6) 32. Nxc4 dxc4 33. Rb5) 31... dxc4 $17 32. f4 Qg4 33. Rb5 (33. f5 Bd5 34. Qd2) 33... f6 34. Rg5 Qe2 {White must now prevent ... Rxa1.} 35. Rg3 Ra2 $6 {Inaccuracy. h5 was best.} (35... Qd3 $17 36. Qb4 Qa3) (35... h5 36. f5 h4 37. Rgf3 Bd7 38. R3f2 Qd3 39. Rd2 Qxc3 40. Bxc3 Bc6 41. Rd4 h3 42. gxh3) 36. Qb4 $4 {Blunder. Qd4 was best. [#]} (36. Qd4 Rd2) 36... Bd5 $2 (36... h5 37. Qe7 Bg4 38. Qxb7 h4 39. Qd5+ Kh7 40. Rxg4 Qxg4 41. Qe4+ Kh6) 37. Re1 $4 { [%mdl 8192] Checkmate is now unavoidable. Qe7 was best.} (37. Qe7 Qxg2+ 38. Rxg2 Rxg2+ 39. Kh1 Rf2+ (39... Re2+ 40. Kg1) 40. Kg1 Rg2+ 41. Kh1) 37... Qd2 $4 {Lost forced checkmate sequence. Qf2+ was best.} (37... Qf2+ 38. Kh2 Bxg2 39. Rg1 (39. Bb2 Be4+ 40. Kh3 Bf5+ 41. Rg4 Bxg4+ 42. Kxg4 Qg2+ 43. Kf5 Ra5+ 44. Qc5 ) 39... Bf3+ 40. R1g2 Bxg2 41. Rxg7+ Kxg7 42. Qe7+ Kg6 43. f5+ Qxf5 44. Qxh7+ Kxh7 45. Bb2 Bf1 46. Kh1 Qh3+ {[%mdl 64] Double Attack} 47. Kg1 Qg2#) 38. Bc3 $4 {[%mdl 8192] Checkmate is now unavoidable. Qxd2 was best.} (38. Qxd2 Rxd2 39. e4 Bc6 40. Bc3 Rd3 41. Rxd3 cxd3 42. Kf2 Re8 43. e5 f5 44. Rc1 Re6) 38... Qf2+ {[%mdl 64] Double Attack} 39. Kh2 Rf7 $4 {[%mdl 8192] Lost forced checkmate sequence. Bxg2 was best.} (39... Bxg2 40. Rg1 Bf3+ (40... Bf1+ 41. R1g2 Bxg2 42. Rxg7+ Kxg7 43. Qe7+ Kg6 44. Be1 Qf1 45. f5+ Qxf5 46. Qf7+) 41. R1g2 Bxg2 42. Rxg7+ Kxg7 43. Qe7+ Kg6 44. Be1 {[#]} Qf1 $1 {[%mdl 512]} 45. f5+ Qxf5 46. Qxh7+ Kxh7 47. Bd2 Rxd2 48. Kg1 Qh3 49. e4 Qh1#) 40. Qd6 $4 {[%mdl 8192] Checkmate is now unavoidable. Rd1 was best.} (40. Rd1 Ra8 41. Rxd5 Qe2 42. Qc5 Kh8 43. Rd6 Raf8 44. Qd5 Qd3 45. Qxd3 cxd3 46. e4 h6) 40... Bxg2 { PRECISÃO CHESSBASE: Brancas 52%, Pretas 53%. PRECISÃO LICHESS: Brancas 45% Pretas 51%} 0-1 [Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "5"] [White "Braga, Cicero Nogueira"] [Black "Segal, Alexandru"] [Result "1/2-1/2"] [ECO "B06"] [Annotator "Stockfish 16"] [PlyCount "24"] [EventDate "2024.??.??"] {[%evp 9,24,79,90,68,84,48,56,35,39,23,23,26,44,51,48,40,87]} 1. e4 g6 2. d4 Bg7 3. Nf3 e6 4. Nc3 Ne7 $6 {Inaccuracy. d6 was best.} (4... d6 5. Bd3 a6 6. Bg5 Ne7 7. Qd2 h6 8. Be3 Nd7 9. Ne2) 5. Be2 $6 $146 {Inaccuracy. h4 was best.} (5. h4 d5 (5... h5 6. Bg5 d6 7. Qd2 a6 8. Bd3 f6 9. Be3 e5) 6. h5 b6 7. h6 Bf8 8. Bg5 Rg8 9. Ne5 Bb7 10. Qf3 f5 11. exf5 gxf5 12. Qh5+ {1-0 (12) Steczkowski, K-Nagrodski,M corr 1978}) 5... d5 (5... d6 6. O-O a6 7. a4 b6 8. Bf4 Nd7 9. Qd2 h6 10. h4 Bb7 11. Rfe1 Nf6 12. Bd3 Ng4 13. Bg3 O-O 14. Rad1 Nc6 15. Ne2 e5 16. c3 Qe7 17. Bc4 Na5 18. Bd3 Nc6 19. Bc2 Na5 20. Qc1 {Smirnov, P (2544) -Afanasiev,N (2542) Anapa RUS 2021 1-0 (54)}) (5... b6 6. O-O Bb7 7. Bg5 h6 8. Bf4 d6 9. Qd2 Nd7 10. Rad1 a6 11. Bg3 Nf6 12. Bd3 Nh5 13. Rfe1 Nxg3 14. hxg3 Qd7 15. d5 e5 16. a4 O-O 17. a5 b5 18. Na2 Rfd8 19. Nb4 f5 (19... c5 {and Black stays safe.} 20. dxc6 Bxc6) 20. Rc1 {Kneebone,R-Staples,N (1823) lichess. org INT 2022 1-0 (44)}) 6. O-O {B06: Modern Defence.} Nbc6 7. exd5 $146 (7. e5 O-O 8. Re1 Nf5 9. Bf1 (9. Bb5 $16) 9... a6 10. a4 Bd7 11. Ne2 b5 (11... f6 $14) 12. axb5 axb5 {[#]} 13. Rxa8 $1 Qxa8 {[#]} 14. Ng3 (14. g4 $1 $18) 14... Nxg3 15. hxg3 Qa1 16. Qd3 Qa4 17. b3 Qa7 18. Be3 Ne7 (18... Qa2) 19. g4 b4 20. Qd2 Rb8 (20... c5 $16) 21. Bh6 c5 {Eiler,G (2105)-Anfang,M Austria 1997 1/2-1/2 (40)}) 7... exd5 8. Bf4 Bg4 9. Nb5 Rc8 $1 10. c3 a6 11. Na3 O-O 12. Nc2 Nf5 { PRECISÃO CHESSBASE: Brancas 56%, Pretas 52%. PRECISÃO LICHESS: Brancas 89% Pretas 88%} 1/2-1/2 [Event "BRA po"] [Site "Sao Paulo"] [Date "2024.01.15"] [Round "6"] [White "van Riemsdijk, Herman C"] [Black "Braga, Cicero Nogueira"] [Result "1/2-1/2"] [ECO "C10"] [Annotator "Stockfish 16"] [PlyCount "99"] [EventDate "2024.??.??"] {[%evp 23,99,73,70,62,66,63,57,4,12,9,10,12,9,8,13,16,15,13,22,8,8,6,6,3,8,7,5, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bg5 Be7 8. Bd3 c5 9. dxc5 Qa5+ 10. c3 Qxc5 11. Qe2 O-O 12. O-O-O Qc7 $146 (12... Ng4 {[%eval 65,0] 12...h6} 13. Bxe7 Qxe7 14. Qe4 { [%csl Gd3][%CAl Re4h7]} Nf6 15. Qh4 Re8 16. g4 g6 17. g5 Nd5 {[#]} 18. Ne5 (18. Rhe1 $1 $18) 18... f6 $2 {[%mdl 8192]} (18... h5 $16 {is tougher.}) 19. Nxg6 hxg6 20. Bxg6 fxg5 21. Qh6 Bd7 22. Bxe8 Qxe8 23. Rhg1 Kf7 24. Rxg5 {[%csl Gg5] [%CAl Rh6g7]} Qh8 25. Qg6+ Ke7 26. Rh5 Qf8 27. Rh7+ {Niemann,H (2571) -Checa,N (2552) Saint Louis USA 2021 1-0}) (12... Rd8 13. Ne5 Rd5 14. f4 b5 15. Bxf6 Bxf6 16. Be4 Rxd1+ 17. Rxd1 Rb8 18. Rd3 b4 19. Bxh7+ Kf8 20. Qh5 Bxe5 21. fxe5 Qg1+ 22. Kc2 bxc3 23. Rd8+ Ke7 24. Qg5+ {1-0 (24) Galasso,D-Leonetti,P Italy 1977}) 13. Ne5 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} (13. Rhe1 Bd7 14. Ne5 Rad8 15. Bxh7+ Kxh7 16. Bxf6 $1 Bxf6 17. Qd3+ Kg8 18. Nxd7 Qxh2 $2 (18... Be7 19. g3 Rfe8) 19. Kb1 (19. Rh1 Rxd7 20. Rxh2 Rxd3 21. Rxd3) 19... Rxd7 20. Qxd7 Qxg2 21. Qd2 Rd8 {[#]} (21... Bh4 22. Rh1 Qg6+ 23. Ka1 Qf6) 22. Qf4 $1 Rxd1+ 23. Rxd1 a6 24. a3 Qc6 25. f3 e5 26. Qe4 Qc8 27. Rd6 b5 {Mis,M (2300)-Piekielny,P (2225) Suwalki POL 2023 1-0 (41)}) 13... b6 14. h4 (14. Bxf6 Bxf6 15. Ng4 Qf4+ 16. Kb1 Bb7) 14... Bb7 15. Bxf6 $146 {White is slightly better.} (15. Rh3 {[%eval 66,0] 15.Kb1} Nd5 16. Re1 Nb4 $2 {[%mdl 8192]} (16... Bd6 17. Bd2 Nb4) 17. Bxe7 Nxa2+ 18. Kb1 Nxc3+ 19. bxc3 Qxe7 20. Be4 Bxe4+ 21. Qxe4 Rac8 22. Rd3 a5 23. Re2 Rc7 24. Rb2 g6 $2 (24... Rfc8 25. Rxb6 h6) 25. Qd4 {1-0 (25) Morovic Fernandez,I (2480)-Albadri,A (2167) Assisi ITA 2022}) 15... Bxf6 {The position is equal.} 16. Nd7 (16. Qh5 $2 g6 $19) 16... Qf4+ 17. Qd2 Qxd2+ 18. Rxd2 Rfd8 19. Nxf6+ gxf6 20. Rhd1 {Strongly threatening Bxh7+!} f5 21. Bf1 Rxd2 22. Rxd2 {[%mdl 4096] Endgame KRB-KRB} Bc6 23. b4 {[%CAl Bb2b4,Bb4b5][%mdl 32]} Kf8 24. b5 Be8 25. Kb2 Ke7 26. Kb3 Rd8 27. Rxd8 Kxd8 {KB-KB} 28. Kb4 Kc7 29. a4 {[%CAl Ba2a4,Ba4a5][%mdl 32]} Bd7 30. a5 Kd6 31. a6 e5 32. Bc4 f6 33. g3 h6 34. Bf7 f4 35. gxf4 exf4 36. Kc4 Ke5 37. Bg6 Bh3 38. Bd3 Be6+ 39. Kb4 Bd7 40. Be2 Be6 41. Bf3 Kd6 42. c4 Bh3 43. Bd5 Bf1 44. Bf3 Bh3 45. Be2 Be6 46. Bf1 Bd7 47. Bg2 Be6 48. Bc6 Bh3 49. Bd5 Bf1 50. Bc6 { PRECISÃO CHESSBASE: Brancas 95%, Pretas 100%. PRECISÃO LICHESS: Brancas 98% Pretas 98%} 1/2-1/2