[Event "MAGISTRAL OSASCO 2024"] [Site "Sao Paulo"] [Date "2024.03.21"] [Round "4.1"] [White "Cubas, Jose Fernando"] [Black "Bobadilla Viera, Jorge Samuel"] [Result "1/2-1/2"] [ECO "C11"] [WhiteElo "2417"] [BlackElo "2397"] [Annotator "STOCKFISH 16"] [PlyCount "204"] [EventDate "2024.03.18"] [EventCountry "BRA"] {[%evp 15,204,0,0,-2,12,21,21,23,35,6,17,16,27,25,24,20,20,10,3,0,0,0,-2,-5,0, -8,-6,-3,-8,-6,-7,-8,-7,-5,0,0,0,0,0,0,0,0,14,4,37,34,46,13,9,12,42,34,55,5,6, 0,0,0,0,0,0,0,0,0,0,-3,6,0,0,0,0,0,1,3,220,219,229,219,193,146,220,212,251,53, 194,186,203,20,9,0,57,5,8,5,5,4,4,0,0,0,0,0,26,1,8,5,17,14,56,0,0,0,0,0,0,0,0, 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, 0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 ({RR} 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Bb5 a5 7. O-O Na7 8. Bd3 c5 9. c4 Nc6 10. cxd5 exd5 11. Re1 Be7 12. Nf1 {1/2-1/2 (12) Psakhis,L (2575)-Kovacevic,V (2485) Zagreb 1993}) ({RR} 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Bd6 6. O-O O-O 7. Bg5 c5 8. c4 Bg4 9. dxc5 Bxc5 10. cxd5 Nbd7 11. Qc2 Qb6 12. Nc3 g6 13. Rad1 Qd6 14. Rfe1 Nxd5 15. Nxd5 Qxd5 16. Bxg6 Qc6 17. Bxh7+ Kh8 { Passos,C (1358)-Sarda,P (1440) Florianopolis 2016 1-0}) 3... Nf6 4. e5 $146 ({ RR} 4. Bg5 Bb4 5. exd5 Qxd5 6. Bxf6 gxf6 7. Nge2 Nc6 8. Qd2 Bxc3 9. Nxc3 Qxd4 10. Qxd4 Nxd4 11. O-O-O c5 12. Ne4 b6 13. c3 Nf5 14. g4 Nh4 15. Nxf6+ Ke7 16. g5 h6 17. f4 hxg5 18. fxg5 Rb8 {Kindermann,S (2535)-Vonthron,H (2339) Germany 2005 1-0 (45)}) 4... Nfd7 5. Nf3 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. Bf4 a6 9. a3 { C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} b5 10. O-O f6 11. exf6 Nxf6 $146 ({Predecessor:} 11... Qxf6 12. Bg3 O-O 13. Qe2 Nd4 14. Nxd4 Bxd4 15. Rae1 Nb6 16. Be5 Bxe5 17. Qxe5 Nc4 18. Bxc4 bxc4 {1-0 (29) Ramirez Maillo,C (1741)-Galvan Sarmiento,J (1958) Gran Canaria 2016}) 12. Ne5 (12. Na2 {with more complications.} O-O 13. Nb4 Na5 14. b3 Bb7 15. Qe2) 12... Nxe5 13. Bxe5 O-O 14. Qe2 Ra7 15. b4 Bd6 $1 16. f4 Raf7 17. Bd4 Qc7 18. g3 Re7 19. Rae1 Rfe8 20. Qf3 Bb7 21. Be5 d4 22. Ne4 Bxe5 23. fxe5 Nxe4 24. Bxe4 Bxe4 25. Rxe4 Rd7 26. Rf4 {White wants to mate with Rf8+.} Rdd8 27. Qe4 Rd5 28. Rh4 {[%csl Gh4] [%CAl Re4h7]} g6 29. Rg4 {Hoping for Rxg6+!} Qxe5 {[#]} 30. Rxg6+ $1 {[%mdl 512]} Kh8 (30... hxg6 31. Qxg6+) 31. Qxe5+ $6 {Inaccuracy. Qh4 was best.} (31. Qh4 d3) (31. Qh4 {is more complex.} d3 32. cxd3 Qd4+ 33. Qxd4+ Rxd4 34. Rg5) 31... Rxe5 $14 {[%mdl 4096] Endgame KRR-KRR} 32. Rg4 Re2 33. Rxd4 Rc8 34. Rd7 { [%eval 5,17]} (34. Rf7 $14 {[%eval 55,12]}) 34... Kg8 $11 35. Rff7 Rcxc2 36. Rg7+ Kf8 {[%CAl Re2e1]} 37. Rgf7+ Kg8 38. Rg7+ Kf8 {[%CAl Re2e1]} 39. Rdf7+ Ke8 40. Rxh7 Ra2 41. Kf1 Reb2 {[%CAl Rb2b1]} 42. Re7+ {[%mdl 64] Double Attack} Kf8 {[%CAl Rb2b1]} 43. Rxe6 Ra1+ 44. Re1 Rxa3 $2 {[%eval 220,16] Mistake. Raa2 was best.} (44... Raa2 $1 45. Rc1 {[%CAl Rc1c8]} Rf2+ $1 46. Kg1 {[%CAl Rc1c8]} Rg2+ 47. Kh1 {[%CAl Rc1c8]} Kg8 $1 48. Rd7 {[%CAl Rc1c8]} Rxh2+ 49. Kg1 { [%CAl Rc1c8]} Rhg2+ 50. Kf1 {[%CAl Rc1c8]} Rgf2+ 51. Ke1) (44... Raa2 $1 $11 { [%eval 3,18]}) 45. Rc1 $1 $18 {[%CAl Rc1c8]} Kg8 46. Ra7 {[%CAl Rc1c8]} Rf3+ 47. Kg1 Rf7 {[%eval 220,16]} (47... Rf8 $16 {[%eval 146,16] might work better.} 48. Rxa6 Rxb4) 48. Rxa6 Rxb4 49. Rc2 $6 {[%eval 53,20] Inaccuracy. Rc8+ was best.} (49. Rc8+ $1 Kg7 {[#]} 50. Kg2 $1 Rb7 {[#]} 51. Rcc6 $1 {[%CAl Rc6g6]} Rb2+ 52. Kh3 Kf8 53. Rf6+ Ke7 54. Rfb6 Rd7 {[%eval 263,19]} (54... Rxb6 $142 { [%eval 197,21]} 55. Rxb6 Kd7) 55. Ra8 Rd6) (49. Rc8+ $1 $18 {[%eval 251,17]} Kh7 50. Rb6) 49... Rb1+ $6 {[%eval 194,18] Inaccuracy. Rb7 was best.} (49... Rb7 $1 50. Rac6) (49... Rb7 $1 $14 {[%eval 53,20]}) 50. Kg2 Rb7 51. Raa2 $2 { [%eval 20,18] Mistake. Rcc6 was best.} (51. Rcc6 Rb2+) ({White should play} 51. Rcc6 $18 {[%eval 203,20]}) 51... b4 $11 52. Rab2 Ra1 $6 {[%eval 57,10] Inaccuracy. Rxb2 was best.} (52... Rxb2 53. Rxb2 Kf7 54. Rb3 Ke6 55. Kf3 Kf5 56. g4+ Ke5 57. h3 Rb8 58. h4 Rb7 59. Kg3) (52... Rxb2 $11 {[%eval 0,24]} 53. Rxb2 b3) 53. Rc4 $6 {[%eval 5,12] Inaccuracy. Rb3 was best.} (53. Rb3 $1 Ra5) ( 53. Rb3 $1 $14 {[%eval 57,10]}) 53... b3 54. Rc3 Ra3 $1 55. Rf3 Rb4 56. h4 Kg7 57. Kh3 Kg6 58. Kg2 Kh5 59. Rd3 Kg6 60. Kf3 Kf5 61. Re3 Kf6 {[%eval 56,9]} ( 61... Rb7 $11 {[%eval 14,14]}) 62. Re4 {[%eval 0,32]} ({White should try} 62. Kg2 $14 {[%eval 56,9]}) 62... Rxe4 {The position is equal.} 63. Kxe4 {KR-KR} Ra4+ 64. Kd5 Rb4 65. Kc5 Rb8 66. Kc4 Rc8+ 67. Kxb3 {Threatens to win with g4.} Kf5 68. Rc2 Rb8+ 69. Kc4 Kg4 70. Rc3 Rd8 71. Rd3 Rc8+ 72. Kd4 Re8 73. Re3 Rd8+ 74. Kc3 Rd7 75. Rd3 Ra7 76. Kd4 Re7 77. Re3 Rd7+ 78. Ke4 Rd8 79. Ra3 Re8+ 80. Kd5 Re1 81. Kd4 Re8 82. Re3 Rd8+ 83. Ke4 Re8+ 84. Kd3 Ra8 85. Ke2 Ra2+ 86. Ke1 Rb2 87. Kf1 Ra2 88. Re2 Ra3 89. Rg2 Ra1+ 90. Kf2 Ra2+ 91. Kg1 Ra1+ 92. Kh2 Ra4 93. Re2 Rb4 94. Kg2 Ra4 95. Kf2 Rb4 96. Rd2 Ra4 97. Rd8 {Strongly threatening Rg8+.} Ra2+ 98. Ke3 {And now Rg8+ would win.} Kxg3 99. h5 Kg4 100. h6 Rh2 101. Rh8 {aiming for h7.} Kg5 102. Rg8+ Kf6 {Precisão Chessbase: Brancas 88%, Pretas 87%. Precisão Chess.com Brancas 97.0%, Pretas 96,9%. Precisão Lichess. org: Brancas 95%, Pretas 96%.} 1/2-1/2 [Event "MAGISTRAL OSASCO 2024"] [Site "Sao Paulo"] [Date "2024.03.21"] [Round "4.2"] [White "Fier, Alexandr"] [Black "Duarte Napoles, Fanny"] [Result "1/2-1/2"] [ECO "C42"] [WhiteElo "2561"] [BlackElo "2203"] [Annotator "STOCKFISH 16"] [PlyCount "82"] [EventDate "2024.03.18"] [EventCountry "BRA"] {[%evp 13,82,38,43,43,51,26,30,20,26,25,39,39,41,42,46,43,44,51,49,51,40,47,54, 22,25,23,52,19,22,25,27,25,26,17,22,-2,-5,-12,12,-6,15,-13,30,25,14,-28,-27, -38,-35,-34,-33,-42,-40,-46,-33,-32,-29,-33,-28,-39,-23,-28,-28,-31,-7,-10,-8, -24,-12,-12,-8]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nf6 6. d4 Be7 7. Bd3 O-O 8. h3 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves. } Nc6 $146 ({RR} 8... Nbd7 9. O-O b6 10. Re1 Bb7 11. Ne4 Nxe4 12. Bxe4 Bxe4 13. Rxe4 Re8 14. Qd3 d5 15. Re1 Bd6 16. Bg5 f6 17. Bd2 c6 18. Rxe8+ {[%eval 30,19]} ({Better is} 18. c4 $16 {[%eval 82,13]}) 18... Qxe8 19. Re1 Qf7 $1 20. Qa6 Nf8 $1 21. a4 {1/2-1/2 (21) Plat,V (2503)-Tregubov,P (2567) Viernheim GER 2024}) 9. O-O Nb4 10. Bc4 {White has an edge.} d5 11. Bb3 c6 12. Ne2 Ne4 $146 ({ Predecessor:} 12... Na6 13. c3 Nc7 14. Bc2 Ne4 15. Ne5 f6 16. Ng4 f5 17. Ne5 Bg5 18. f3 Nd6 {1-0 (71) Porubszky Angyalosine,M (2177)-Soos,L (2201) Hungary 2004}) 13. a3 Na6 14. c4 Nc7 15. Nf4 Ne6 16. Re1 {[%CAl Rc4d5]} Nxf4 17. Bxf4 Be6 18. cxd5 cxd5 19. Bc2 Bf5 20. Ne5 Rc8 {[#] Strongly threatening ...Nxf2!} 21. Rc1 Bh4 22. Be3 Bf6 23. Qf3 g6 24. Ng4 Bxg4 25. Qxg4 Nd6 26. b3 Qa5 { [#] ...Rxc2! is the strong threat.} 27. Qf4 Qd8 {[%eval 30,23]} (27... Ne8 { [%eval -13,23] should be considered.} 28. Bd2 Qxa3) 28. Bd3 $11 Rxc1 29. Bxc1 $6 {[%eval -28,22] Inaccuracy. Rxc1 was best.} (29. Rxc1) (29. Rxc1 {[%eval 14, 22] is superior.} Re8 30. g3) 29... Re8 30. Rxe8+ Nxe8 31. Be3 Nc7 32. Qg4 Ne6 33. b4 Qb6 {[%CAl Rf6d4]} 34. Bf5 h5 35. Qg3 {Threatening Bxe6.} Nxd4 {aiming for ...Ne2+.} 36. Bd3 Qd8 37. Bxd4 Bxd4 38. Qf3 Qe7 39. g3 h4 {Black wants to play ...hxg3.} 40. g4 Qe5 41. Kg2 Qf6 {Precisão Chessbase: Brancas 80%, Pretas 85%. Precisão Chess.com Brancas 96.9%, Pretas 97,3%. Precisão Lichess. org: Brancas 97%, Pretas 97%.} 1/2-1/2 [Event "MAGISTRAL OSASCO 2024"] [Site "Sao Paulo"] [Date "2024.03.21"] [Round "4.3"] [White "Molina, Roberto Junio Brito"] [Black "Quintiliano, Renato R."] [Result "0-1"] [ECO "B67"] [WhiteElo "2376"] [BlackElo "2483"] [Annotator "STOCKFISH 16"] [PlyCount "98"] [EventDate "2024.03.18"] [EventCountry "BRA"] {[%evp 20,98,41,40,36,43,37,38,62,59,61,45,47,-50,-37,-32,-37,-39,-40,-188, -187,-195,-191,-171,-182,-185,-146,-141,-32,-320,-302,-360,-396,-364,-349,-452, -450,-445,-439,-427,-342,-367,-221,-224,-208,-193,-204,-199,-209,-193,-193, -278,-276,-370,-361,-482,-499,-473,-478,-473,-467,-417,-414,-423,-378,-439, -442,-501,-474,-454,-453,-501,-499,-494,-464,-498,-499,-532,-532,-528,-517]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 a6 8. O-O-O e6 9. f3 Nxd4 10. Qxd4 Be7 11. h4 b5 {[%CAl Bb7b5,Bb5b4][%mdl 32] B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} 12. Kb1 Qc7 13. Qd2 b4 {White is slightly better.} ({RR} 13... Rb8 14. Bd3 b4 15. Ne2 a5 16. g4 h5 17. gxh5 Nxh5 18. Bxe7 Kxe7 19. Rhg1 g6 20. Qg5+ Nf6 $2 {[%eval 221,22]} (20... Kf8 $14 {[%eval 57,21]}) 21. Nf4 $2 {[%eval -39,21]} (21. e5 $1 $18 {[%eval 221,22][%mdl 512]} dxe5 22. Ng3) 21... Qc5 $1 22. Rde1 Qxg5 $1 23. hxg5 Ne8 24. Rh1 Nc7 $1 25. Bc4 {[%eval -92,21]} (25. Ng2 $15 {[%eval -50,19]}) 25... Bb5 26. Bxb5 Rxh1 27. Rxh1 Rxb5 28. Rg1 {Dominguez Perez,L (2758) -Firouzja,A (2728) lichess.org INT 2020 0-1 (49)}) 14. Ne2 a5 {[%CAl Ba6a5, Ba5a4,Ba4a3][%mdl 32]} 15. g4 a4 ({RR} 15... h5 16. gxh5 Nxh5 17. Bg2 Rc8 18. Rc1 {[%eval 7,18]} (18. f4 $14 {[%eval 53,15] is superior.}) 18... Bf6 { [%eval 52,16]} (18... Qb6 $11 {[%eval 7,18] is more appropriate.}) 19. Rhd1 Bb5 {[%eval 101,19]} (19... e5 $11 {[%eval 29,20]}) 20. Nd4 Ba4 21. Bf1 Rb8 22. Bh3 Bxg5 {[%eval 138,14]} (22... Be5 $142 {[%eval 85,17]}) 23. hxg5 g6 24. Bg4 Ke7 25. f4 e5 26. Ne2 $1 Bc6 27. Qe3 Bb5 $2 {[%eval 365,14]} (27... Qb6 $16 { [%eval 150,15]} 28. Qf3 Qc7) 28. c4 Bc6 {[%eval 486,17]} (28... Ba4 {[%eval 329,20] was called for.} 29. b3 Qc5 30. Qxc5 dxc5 31. bxa4 Nxf4 32. Nxf4 exf4 33. Rd7+ Ke8) 29. c5 Rbd8 30. cxd6+ {Nguyen,A (2370)-Kulon,K (2327) Plzen CZE 2024 1-0 (33)}) 16. Nf4 $146 {[%eval -50,23] Inaccuracy. Bf4 was best.} (16. Bf4 e5) ({RR} 16. Nd4 {[%eval -12,16] 16.c4 0.42} O-O 17. Be3 {[%eval -77,17]} (17. Rg1 $11 {[%eval -16,18] remains equal.}) 17... Rfc8 {[%eval -24,21]} ({ Black should play} 17... Rfb8 $1 $17 {[%eval -77,17]}) 18. g5 {[%eval -67,17]} (18. h5 $1 $11 {[%eval -24,21] might be stronger.}) 18... Nh5 19. Bd3 e5 20. Ne2 {[%eval -126,20]} (20. Nb5 $15 {[%eval -59,20]} Qa5 21. c4) 20... Qb7 21. Rc1 Be6 22. c4 Rc6 23. Rc2 {[%eval -208,18]} (23. f4 $17 {[%eval -119,19] keeps fighting.}) 23... b3 24. Rcc1 a3 25. axb3 Rca6 {[%eval -52,17]} (25... Qxb3 $17 {[%eval -123,18]} 26. Rc3 Qb7) 26. Kc2 $1 Rb8 {[%eval -30,19]} (26... Bd8 $17 {[%eval -97,19]} 27. Ra1 Rb8) 27. Qc3 Bd8 28. b4 $1 axb2 29. Rb1 { [%eval -82,18]} (29. Qxb2 $15 {[%eval -32,20]} Ra4 30. Rb1) 29... Rc8 {[%eval -14,18]} (29... Rba8 $1 $17 {[%eval -82,18]} 30. Rxb2 Ra3) 30. Rxb2 Rac6 { Kevlishvili,R (2541)-Burke,J (2583) Webster Groves USA 2023 0-1 (49)}) ({RR} 16. Qxb4 Rb8 17. Qc3 Qb7 18. Bc1 $1 O-O 19. Nd4 {[%eval 3,17]} (19. Qe3 $16 { [%eval 73,21]}) 19... Rfc8 20. Qd3 $1 g6 21. h5 e5 22. Ne2 d5 {[%eval 121,16]} (22... g5 $14 {[%eval 34,18]}) 23. hxg6 $1 hxg6 24. exd5 Bb5 $2 {[%eval 235,17] } (24... Bf8 $1 $14 {[%eval 55,18]}) 25. Qd2 Qc7 $2 {[%eval 442,20]} (25... Bf8 {[%eval 250,16]} 26. Ng3 Bxf1) 26. d6 Bxd6 27. Qxd6 $2 {[%eval -6,20]} (27. c4 $18 {[%eval 298,20]} Bxc4 28. Qxd6) 27... Qxc2+ 28. Ka1 Bxe2 $2 {[%eval 181,21] } (28... a3 $1 $11 {[%eval -2,23]} 29. Qd2 Bxe2 30. Qxc2 Rxc2 31. Bxe2 axb2+ 32. Bxb2 Rbxb2) 29. Bxe2 Qxe2 30. Rd2 $1 {[%CAl Rd2e2]} Qxf3 {Vallejo Pons,F (2716)-Shankland,S (2710) Baku AZE 2022 1-0 (74)}) (16. c4 $14 {[%eval 47,20]}) ({Predecessor:} 16. Qxb4 Rb8 17. Qc3 Qb7 18. Bc1 O-O 19. Nd4 Rfc8 20. Qd3 g6 21. h5 e5 22. Ne2 {1-0 (74) Vallejo Pons,F (2716)-Shankland,S (2710) Baku 2022} ) 16... a3 {White must now prevent ...axb2.} 17. b3 h6 $1 {[%CAl Rh6g5]} 18. Bxf6 $1 Bxf6 19. Nh5 $2 {[%eval -188,17] Mistake. Qxb4 was best.} (19. Qxb4 Rb8 20. Qd2 $1 Bc3 21. Qd3 Be5 22. Ne2 O-O 23. f4 Bb5 24. Qd2 Bb2 $1 25. Ng3 Rfc8) (19. Qxb4 $15 {[%eval -40,19]} Be5 20. Ne2) 19... Bc3 $1 $36 {[%CAl Rc3d2] [%mdl 2048] White is under strong pressure.} 20. Qe3 g6 21. Nf4 Be5 22. Ng2 Rc8 {[%csl Gc8][%CAl Rc7c2]} 23. Bc4 O-O $2 {[%eval -32,19] Mistake. Bg7 was best.} (23... Bg7 24. h5 {[%eval -198,16]} (24. Rd3 $17 {[%eval -149,21] was necessary.}) 24... g5 $1 25. f4 gxf4 26. Nxf4 Qc5 $1 27. Qxc5 dxc5 28. Nd3 Bc3 29. Rhf1 Rg8 30. Rf4) (23... Bg7 $17 {[%eval -141,21]} 24. Rd2 Rb8) 24. f4 $4 { [%eval -320,17] Blunder. Qxh6 was best.} (24. Qxh6 Qa5) (24. Qxh6 $15 {[%eval -32,19]} d5 25. exd5 exd5 26. Rxd5) 24... Bg7 25. Rd2 $6 {[#] Inaccuracy. g5 was best.} (25. g5 h5 26. f5 exf5 27. Nf4 Rfe8 28. Nd5 Qd8 29. Qf4 Re5 30. Rhf1 Kh7 31. exf5 Bxf5) 25... d5 $1 {[%mdl 512]} 26. Rhd1 (26. exd5 exd5) 26... Bc6 27. exd5 exd5 28. Ba6 Ra8 29. Bf1 d4 $6 {Inaccuracy. Bd7 was best.} (29... Bd7 30. g5 Rfe8 31. Qg3 Bf5 32. gxh6 Rac8 33. Bc4 dxc4 34. hxg7 cxb3 35. Qxb3 Qc3 36. h5) 30. Qg3 Be4 $6 {Inaccuracy. d3 was best. aiming for ...d3!} (30... d3 31. Rxd3 Be4 32. f5 Be5 33. Qe1 Bxd3 34. Bxd3 Bc3 35. Qe3 Rae8 36. Qf4 Qxf4 37. Nxf4) 31. Bc4 Qc5 32. Qf2 Bd5 $1 33. Ne1 Bxc4 34. bxc4 Qxc4 35. Rd3 $6 { [%eval -278,21] Inaccuracy. Nd3 was best.} (35. Nd3 Ra5 36. f5 {[#]} Re8 $1 37. fxg6 fxg6 38. h5 Rg5 39. hxg6 Rxg6 40. Qf3 Qc3 {[%eval -138,18]} ({Black should try} 40... Qc8 $19 {[%eval -185,17]} 41. Rg1 Kh7) 41. Rg2 {[#]} Rg5 $1) (35. Nd3 {[%eval -193,20] might work better.}) 35... Rfe8 36. Nf3 $6 {[#] Inaccuracy. h5 was best.} (36. h5 Re4 37. hxg6 fxg6 38. g5 hxg5 39. fxg5 Rf8 40. Nf3 Qc6 41. Qd2 Qb7 42. Rb3 {[%eval -265,19]} (42. Nxd4 $142 {[%eval -196, 19]} Rfe8 43. Qc1) 42... Rf7 $2 {[%eval -96,21]} (42... Qd5 $19 {[%eval -265, 19]} 43. Rd3 Ref4)) 36... Re3 $1 {[%mdl 512]} 37. Rxe3 dxe3 38. Qxe3 Rc8 { [%csl Gc8][%CAl Rc4c2]} 39. Ne1 Qc6 40. g5 Re8 41. Qd3 Qc5 42. h5 Re3 {Black is clearly winning.} 43. Qd2 Qc3 44. Qxc3 Bxc3 {KRB-KRN} ({And not} 44... Rxc3 45. gxh6 Bxh6 46. hxg6 $11) 45. Nd3 gxh5 46. Rh1 Rf3 47. gxh6 Kh7 48. Nc5 Rxf4 49. Kc1 Kxh6 {Precisão Chessbase: Brancas 54%, Pretas 83%. Precisão Chess. com Brancas 85.9%, Pretas 90.9%. Precisão Lichess.org: Brancas 91%, Pretas 96%.} 0-1 [Event "MAGISTRAL OSASCO 2024"] [Site "Sao Paulo"] [Date "2024.03.21"] [Round "4.4"] [White "Valderrama Quiceno, Esteban Alb"] [Black "De Carvalho, Vitor Augusto Ponci"] [Result "1-0"] [ECO "B44"] [WhiteElo "2428"] [BlackElo "2134"] [Annotator "STOCKFISH 16"] [PlyCount "181"] [EventDate "2024.03.18"] [EventCountry "BRA"] {[%evp 12,181,24,25,23,18,24,29,21,19,21,5,8,-1,-2,-10,33,-14,-18,-14,10,5,26, 4,9,1,8,7,12,17,52,50,60,48,76,69,73,72,84,74,71,68,68,51,64,63,85,79,93,73,75, 76,91,75,78,82,98,71,60,27,51,46,90,91,235,234,220,236,235,237,264,253,286,291, 342,337,335,323,418,345,411,292,290,283,280,273,349,348,361,360,364,367,384, 341,364,341,356,345,341,338,333,354,340,339,353,295,305,278,337,275,386,385, 509,312,311,295,308,296,405,393,396,395,518,509,561,561,556,487,559,396,413, 341,423,426,532,9,7,7,7,7,7,7,7,7,7,7,7,7,3497,3437,3641,3973,3646,10,3327,927, 9605,3374,29976,29976,29984,29985,29986,29987,29987,29988,29988,29989,29989, 29990,29990,29991]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Qa5 {next ...Nxe4 is good for Black.} 9. Bd2 Be7 { White has an edge.} 10. Be2 O-O 11. O-O Qe5 12. Bf3 $146 ({RR} 12. Bd3 Nb4 $1 13. Bb1 Bd7 14. Be3 Qa5 15. Qe2 Rfc8 16. Rd1 Be8 17. f4 Qh5 18. Qxh5 Nxh5 19. e5 {[%eval -83,18]} (19. g4 $11 {[%eval -23,20] keeps the balance.} Nf6 20. h3) 19... dxe5 20. fxe5 Bc5 21. Kf2 Nf4 {[%eval -34,22]} (21... Bxe3+ $17 {[%eval -99,15]} 22. Kxe3 Rc5) 22. Be4 Rab8 23. Rd2 b6 24. Re1 Nc6 {[%eval 4,20]} ({ Black should try} 24... Bxe3+ $15 {[%eval -59,19]} 25. Kxe3 Ng6) 25. Bxc5 bxc5 26. b3 {[%eval -125,21]} (26. g3 $11 {[%eval 10,21]} Nh3+ 27. Kf1) 26... Kf8 $2 {[%eval 47,20] Krupa,M (2119)-Jurcik,M (2404) Slovakia SVK 2024 0-1 (79)} ({ Better is} 26... Nxe5 $17 {[%eval -125,21]} 27. Bxh7+ Kxh7 28. Rxe5 Rd8 29. Rxd8 Rxd8)) 12... Nd4 13. Nc2 Bd7 {[%eval 33,21]} (13... Nxf3+ $11 {[%eval -10, 20]} 14. Qxf3 Bd7) 14. Rc1 {[%eval -14,18]} (14. Nxd4 $1 $14 {[%eval 33,21]} Qxd4 15. Bf4 Qxc4 16. Bxd6 Bxd6 17. Qxd6) 14... Nxf3+ $11 15. Qxf3 h6 16. Rfd1 Qh5 (16... Qc5 {is interesting.} 17. Ne3 Qe5 18. Nf1 Bc6 19. Bf4 Qa5) 17. Qxh5 Nxh5 18. Be3 {White wants to play e5!} Nf6 19. Bf4 e5 20. Bd2 Rac8 21. Ne3 Be6 22. f3 Bd8 23. b3 Ba5 24. Kf1 Rfd8 25. Ke2 Kf8 26. Be1 Bb4 27. Bh4 (27. g4 { is more complex.} Ba3 28. Rb1 Bc5 29. a4 h5 30. g5) 27... g5 28. Be1 Bxc3 29. Bxc3 b6 30. Bb4 Ke7 31. Rc2 Ne8 32. Rdc1 Kd7 33. Be1 a5 34. Bf2 Rc6 35. Nd1 Nc7 36. Nc3 Na6 {[%eval 90,17]} (36... Rb8 $14 {[%eval 46,16]}) 37. Rd2 $16 Ke7 $2 {[%eval 235,15] [#] Mistake. Nc5 was best.} (37... Nc5 38. h4 g4 39. Be3 gxf3+ 40. gxf3 Rg8 41. Kf2 f5 {[#]} 42. Rcd1 {[%eval 55,19]} (42. exf5 $1 $16 { [%eval 103,15]} Bxf5 43. Nd5) 42... f4 43. Bxc5 $1 bxc5 44. Nb5) (37... Nc5 $16 {[%eval 91,14]}) 38. Nd5+ $1 $18 Bxd5 39. exd5 Rc5 40. h4 Rh8 41. Rh1 f6 $6 { Inaccuracy. Rcc8 was best.} (41... Rcc8 42. hxg5 hxg5 43. Rxh8 Rxh8 44. Bxb6 a4 45. bxa4 g4 46. Kd3 g3 47. Rd1 f5 48. a5) 42. Bxc5 bxc5 {[%mdl 4096] Endgame KRR-KRN} 43. Ke3 Kf7 44. g3 Nb8 45. Rdh2 {Black must now prevent hxg5.} Kg6 46. h5+ $6 {Inaccuracy. hxg5 was best.} (46. hxg5 fxg5 47. Rh5 Nd7 48. f4 gxf4+ 49. gxf4 Nf6 50. R5h4 e4 51. Rg1+ Kf7 52. f5 h5) 46... Kf7 47. Ke4 Nd7 48. a3 Ke7 49. Kf5 Kf7 50. Rb2 Nb6 51. Rc1 Rc8 52. Rcc2 Rb8 53. Rc1 Nc8 54. Ke4 Nb6 55. Rbb1 Nd7 56. Kf5 Rb7 57. Rc2 Nb6 58. Rcb2 Rc7 59. Ke4 Nd7 60. f4 Ke7 {[%eval 386,19]} (60... Rc8 $142 {[%eval 275,21]} 61. f5 g4) 61. Rf2 Rb7 $6 { Inaccuracy. f5+ was best.} (61... f5+ 62. Kxf5 Rc8 63. Kg4 Rf8 64. Kh3 Rf5 65. Re1 Nf6 66. Rff1 gxf4 67. g4 Nxg4 68. Kxg4) 62. Rbb2 $6 {Inaccuracy. fxg5 was best.} (62. fxg5 Rb8 63. gxh6 Rg8 64. h7 Rh8 65. g4 Rxh7 66. Rh1 Rh8 67. Kd3 e4+ 68. Kxe4 Ne5) 62... Rb8 63. Kf5 Kf7 64. Rf3 gxf4 65. gxf4 Rg8 66. b4 axb4 $6 {Inaccuracy. cxb4 was best.} (66... cxb4 67. axb4 a4 68. c5 Ke7 69. Rc2 exf4 70. Kxf4 Rg5 71. Rg3 dxc5 72. bxc5 Rxd5 73. c6) 67. axb4 exf4 68. bxc5 Nxc5 69. Kxf4 Rg5 70. Ra3 $2 {Mistake. Rb6 was best. Intending Ra7+ and mate.} (70. Rb6 Rxh5 71. Rxd6 Rh4+ 72. Kf5 Rh5+ 73. Kg4 Rg5+ 74. Kf4 h5 75. Ke3 f5 76. Kd4 Ne4) 70... Rxh5 71. Rb6 Kg6 $6 {Inaccuracy. Rh4+ was best.} (71... Rh4+ 72. Kf5 Rh5+ 73. Kg4 Rg5+ 74. Kf4 h5 75. Rxd6 Rg4+ 76. Kf3 Ne4 77. Rc6 Ng5+ 78. Ke2) 72. Rg3+ Rg5 73. Kf3 $4 {[%eval 9,20] Blunder. Rxg5+ was best.} (73. Rxg5+ hxg5+ 74. Ke3 Nd7 75. Rxd6 Ne5 76. Rc6 g4 77. Ke2 Kf7 78. Rc7+ Ke8 79. c5 f5) ({ Only move:} 73. Rxg5+ $18 {[%eval 532,18]} hxg5+ 74. Ke3) 73... Rxg3+ $11 74. Kxg3 {Strongly threatening Kf3. KR-KN} Kf5 75. Kf3 Ke5 $1 76. Rb8 {With the idea Ke3.} Kd4 77. Rd8 Ne4 78. Kf4 h5 79. Kf5 h4 $4 {[%eval 3497,24] Blunder. Nc5 was best.} (79... Nc5 80. Rxd6 Kxc4 81. Rd8 Nb7 82. Rh8 Kxd5 83. Kxf6 Nc5 84. Rxh5+ Kd6 85. Rg5 Nd7+ 86. Kf5) (79... Nc5 $11 {[%eval 7,39]}) 80. Rh8 $18 Nd2 81. Rxh4+ Kc5 82. Ke6 $4 {[%eval 10,24] Blunder. Kxf6 was best.} (82. Kxf6 Nxc4 83. Ke6 Ne3 84. Rh1 Nxd5 85. Rc1+ Kd4 86. Rd1+ Ke3 87. Kxd5 Ke2 88. Rc1 Kf3) (82. Kxf6 $18 {[%eval 3646,31]} Nxc4 83. Ke6) 82... f5 $4 {[%eval 3327,21] Blunder. Nxc4 was best.} (82... Nxc4 83. Rh3 Kd4 84. Rf3 Ke4 $1 85. Rf1 Ne3 $1 86. Ra1 Nc4 $1 87. Re1+ Kd4 88. Rd1+ Kc5 89. Rd3) (82... Nxc4 $11 {[%eval 10, 24]} 83. Rh5 Na3 84. Kxf6 Nc2) 83. Rf4 Nxc4 84. Rxf5 Na5 85. Rf2 {White mates.} Kb6 $4 {Checkmate is now unavoidable. Nb7 was best.} (85... Nb7 86. Rc2+ Kd4 87. Rc1 Nc5+ 88. Kxd6 Nb7+ 89. Ke6 Nd8+ 90. Kf5 {[%eval 925,22]} (90. Ke7 $142 {[%eval 32728,33]} Kxd5 91. Kxd8 Ke5 92. Kd7 Kf4 93. Rf1+ Ke4 94. Ke6 Kd4 95. Rf4+ Ke3 96. Ke5) (90. Ke7 $142 {[%eval 32732,60]} Ke4 91. d6 Ke5 92. d7 Nb7 93. Rc7 Nd8 94. Kxd8 Ke4 95. Ke7) 90... Nb7 91. Rd1+ Ke3 92. Ke5) 86. Rc2 Nb7 87. Rb2+ Kc7 {[#]} 88. Rxb7+ $1 {[%mdl 576] Remove Defender} Kxb7 89. Kxd6 Kc8 90. Ke7 Kc7 91. d6+ {Precisão Chessbase: Brancas 78%, Pretas 54%. Precisão Chess.com Brancas 88.2%, Pretas 83.5%. Precisão Lichess.org: Brancas 92%, Pretas 88%.} 1-0 [Event "MAGISTRAL OSASCO 2024"] [Site "Sao Paulo"] [Date "2024.03.21"] [Round "4.5"] [White "Do Valle Cardoso, Lucas"] [Black "Di Berardino, Diego Rafael"] [Result "0-1"] [ECO "C11"] [WhiteElo "2406"] [BlackElo "2497"] [Annotator "STOCKFISH 16"] [PlyCount "91"] [EventDate "2024.03.18"] [EventCountry "BRA"] {[%evp 15,91,17,40,42,44,36,37,42,37,7,6,5,14,3,20,15,17,21,18,9,12,15,36,10, 22,7,35,42,82,73,76,-142,-152,-147,-146,-145,-149,-154,-137,-179,-198,-250, -240,-330,-323,-347,-296,-365,-362,-378,-212,-367,-371,-377,-354,-388,-407, -441,-442,-441,-441,-435,-440,-441,-441,-441,-432,-470,-495,-774,-728,-3943, -29977,-29989,-29990,-29990,-29991,-29988]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Nbd7 6. Nf3 h6 7. Nxf6+ Nxf6 8. Be3 Nd5 9. Bd2 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} Bd6 $146 ({RR} 9... c5 10. Bb5+ Bd7 11. Bxd7+ $1 Qxd7 12. c4 Nb6 13. dxc5 {[%eval -5,19]} (13. Rc1 $1 $14 { [%eval 45,18]}) 13... Bxc5 14. b4 Bd4 15. Rc1 Bb2 16. Rc2 Bf6 17. O-O Rc8 18. Qe2 Qa4 19. Rfc1 O-O 20. Qe4 Rc7 21. h4 Rfc8 {[%eval 60,15]} (21... Nd7 $11 { [%eval 1,19]}) 22. g4 $1 Be7 23. g5 {[%eval 8,22]} (23. Bf4 $16 {[%eval 92,18]} ) 23... hxg5 24. Nxg5 {[%eval -17,19] Asis Gargatagli,H (2511)-De la Riva Aguado,O (2443) Barcelona ESP 2024 1/2-1/2 (34)} (24. hxg5 $14 {[%eval 42,22]} g6 25. Qh4)) 10. c4 Nf6 11. Bd3 {White is slightly better.} c5 12. Bc3 cxd4 13. Nxd4 O-O $146 ({Predecessor:} 13... a6 14. Nf3 b6 15. O-O Bb7 16. Re1 Qc7 17. Bxf6 gxf6 18. Be4 Bxe4 19. Rxe4 f5 20. Qd4 O-O-O {0-1 (19) Davis,J-Prange,E CServe email 1995}) 14. O-O a6 15. Re1 Qc7 16. Nf3 b6 17. Qe2 Bb7 18. Ne5 Rad8 19. h3 a5 20. a3 Rfe8 21. Rad1 Nd7 22. Nxf7 Kxf7 23. Bg6+ $4 {[%eval -142,20] Blunder. Qh5+ was best.} (23. Qh5+ Kg8) (23. Qh5+ $16 {[%eval 76,21] keeps the pressure on.} Kg8 24. Bxg7 $1 {[%mdl 512]}) 23... Kg8 $17 24. Bxe8 Rxe8 25. Qd3 Bh2+ $40 {[%mdl 128] Black attacks with force.} 26. Kh1 Re7 27. Qg6 {[%eval -179,16] [#]} (27. b4 $17 {[%eval -137,19]}) 27... Nf8 $1 $19 {[%CAl Rf8g6]} 28. Qg4 {[%eval -250,18]} (28. Qd3 $142 {[%eval -198,20]}) 28... Rf7 29. Re2 Bf4 30. b3 e5 31. Rde1 Qc6 32. f3 Nd7 $6 {[%eval -212,20] Inaccuracy. Ng6 was best.} (32... Ng6 33. Rxe5 Nxe5 34. Bxe5 Bc8 35. Qh4 Bg5 36. Qf2 Bf5 37. Bd4 Bd8 38. Re5 Bd7 39. Rb5) (32... Ng6 $142 {[%eval -378,21]} 33. Rxe5 Nxe5 34. Bxe5 Bc8) 33. Rd1 $6 {[%eval -367,16] Inaccuracy. Bd2 was best.} (33. Bd2 Qd6) (33. Bd2 {[%eval -212,20] might work better.}) 33... a4 34. Bd2 Nf6 35. Qg6 { Black must now prevent Bxf4.} Rd7 36. Qc2 {intending Bxf4.} Qd6 {aiming for ... Nh5.} 37. Ree1 {Threatens to win with Bxf4.} Bxd2 38. Re2 {[%CAl Re2d2]} Qxa3 39. Rexd2 axb3 40. Qc3 Rxd2 41. Rxd2 e4 42. Rb2 $2 {[%eval -774,18] Mistake. Re2 was best.} (42. Re2 Bc6 43. h4 {[%eval -662,19]} (43. f4 $142 {[%eval -446, 22]}) 43... exf3 44. gxf3 Qd6 45. Kg2 Nh5 46. Qxb3 Qg3+ 47. Kf1 Nf4 48. Re3 Qg2+ {[%eval -520,13]} (48... Bd7 $142 {[%eval -3291,19][%CAl Rd7h3]} 49. Re8+ Bxe8 50. Qe3 Bg6 51. Qf2 Bd3+ {[%mdl 64] Double Attack} 52. Ke1 Ng2+ {[%mdl 64] Double Attack} 53. Kd2 Qxf2+ 54. Kxd3 Qe3+ 55. Kc2 Nxh4 56. Kb2 Nxf3 57. Kb1 Nd4 58. Kb2 Qb3+ {[%mdl 64] Double Attack} 59. Kc1 Qc2#)) (42. Rd1 $142 { [%eval -495,21]}) 42... exf3 43. gxf3 {[#]} Bxf3+ $1 44. Kh2 $2 {Checkmate is now unavoidable. Qxf3 was best.Black mates.} (44. Qxf3 Qxb2 45. Qf1 Qc2 46. c5 b2 47. cxb6 Kh7 48. Kg1 b1=Q 49. Qxb1 Qxb1+ 50. Kg2 Qb3) 44... Qd6+ 45. Kg1 Qg3+ 46. Kf1 {Precisão Chessbase: Brancas 51%, Pretas 88%. Precisão Chess. com Brancas 85.2%, Pretas 94.7%. Precisão Lichess.org: Brancas 90%, Pretas 97%.} 0-1