[Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.1"] [White "Iago, Henrique Da Silva S"] [Black "Silas, Carvalho Fernandes"] [Result "1/2-1/2"] [ECO "E19"] [WhiteElo "2127"] [BlackElo "2100"] [Annotator "Stockfish 16.1"] [PlyCount "38"] [EventDate "2024.06.10"] {[%evp 9,38,-24,-15,-17,0,-16,1,-37,0,-45,-45,-41,0,0,0,-1,-3,-6,0,-10,101,0,0,0,6,0,-1,-4,0,0,26]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Qc2 ({Relevant:} 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 d5 8. cxd5 exd5 9. Bg2 O-O 10. O-O Re8 11. Qc2 c5 12. dxc5 bxc5 13. Bg5 Nc6 14. Rfe1 Nb4 15. Qd1 d4 16. Na4 Ne4 17. Bd2 Nxd2 18. Qxd2 Rc8 19. Rad1 Bb5 20. a3 Nd5 21. Nb2 Nc3 22. Rc1 Bf6 23. Nd3 Qe7 24. Bf1 h6 25. e3 Ne4 26. Qc2 c4 27. bxc4 Rxc4 28. Qb2 Rxc1 29. Qxc1 dxe3 30. Qxe3 Nd6 31. Qc5 Qd8 32. Rxe8+ Bxe8 33. Qxa7 Nb5 {Tomashevsky,E (2681)-Karjakin,S (2750) Moscow 2024 ½-½ (68)}) 4... Bb7 5. Nbd2 $146 ({RR} 5. Bg5 Bb4+ 6. Nbd2 O-O ({RR} 6... h6 7. Bxf6 Qxf6 8. a3 Bxd2+ 9. Qxd2 d6 10. Qc3 O-O 11. g3 Bxf3 12. exf3 Nc6 13. Rd1 e5 14. d5 Nd4 15. Bg2 c5 16. dxc6 Rac8 17. O-O Ne2+ 18. Kh1 Nxc3 19. bxc3 Rxc6) 7. a3 Be7 8. e4 d5 9. Bd3 h6 10. Bf4 c5 11. cxd5 exd5 12. e5 Nfd7 13. g4 Nc6 14. h4 Re8 15. g5 Rf8 {0-1 (15) Arango Alvarez,A (1666)-Martinez Pinchao,J (1819) Medellin, Hotel Dorado de la 2024 [Stockfish 16.1 - Chessbase]}) ({RR} 5. a3 c5 6. Nc3 Bxf3 7. exf3 cxd4 8. Nb5 Nc6 9. Qd1 e5 10. f4 d6 11. Qa4 Qd7 12. Be2 Be7 13. Bf3 e4 14. Be2 d3 15. Bd1 O-O 16. O-O Nd4 17. Nxd4 Qb7 18. Qc6 Qb8 19. Nf5 Re8 {Andrews,T (2135)-Seemann,J (2439) chess.com INT 2024 1-0 (41)}) ({RR} 5. Bg5 Bb4+ 6. Nbd2 h6 7. Bxf6 Qxf6 8. a3 Bxd2+ 9. Qxd2 d6 10. Qc3 O-O 11. g3 Bxf3 12. exf3 Nc6 13. Rd1 e5 14. d5 Nd4 15. Bg2 c5 16. dxc6 Rac8 17. O-O Ne2+ 18. Kh1 Nxc3 19. bxc3 Rxc6 {Ardila,O (1952)-Martins,B (2347) chess.com INT 2024 0-1}) 5... d5 6. e3 {E19: Queen's Indian: Old Main Line with 7...Ne4 8 Qc2 Nxc3 8 Qxc3.} Be7 7. Bd3 O-O 8. O-O Nbd7 9. Ne5 c5 10. cxd5 exd5 11. b3 {[#]} cxd4 $146 ({Predecessor:} 11... Rc8 {[%eval 49,31] [%wdl 139,857,4] 11...cxd4 -0.04} 12. Nxd7 Qxd7 13. Bf5 Qc7 {[%eval 120,23] [%wdl 706,294,0]} (13... cxd4 $11 {[%eval 29,26] [%wdl 67,926,7]} 14. Qxc8 Qxc8 15. Bxc8 Rxc8) 14. Bxc8 $16 Rxc8 15. Qf5 $2 {[%eval -21,30] [%wdl 8,948,44]} (15. Ba3 $16 {[%eval 130,24] [%wdl 784,216,0]}) 15... cxd4 16. Nf3 Ba6 $1 17. Rd1 (17. Re1 $5 {[%CAl Re3d4]}) 17... Be2 18. Re1 d3 19. Bb2 $1 Rd8 {[%eval 65,27] [%wdl 187,812,1]} (19... g6 $11 {[%eval 0,28] [%wdl 14,972,14]} 20. Qh3 Qd8) 20. Nd4 (20. Rec1 $5 {[%CAl Rc1c7]} Qb7 21. Qf4 $14) 20... Ng4 21. Nxe2 $4 {[%eval -32761,26] [%wdl 0,0,1000][%mdl 8192]} (21. Qh5 $11 {[%eval 25,31] [%wdl 36,960,4]} Nf6 22. Qh3) 21... Qxh2+ 22. Kf1 Qh1+ 23. Ng1 Nh2# {0-1 (23) Nguyen,T-Do Nguyen Bao,N Ha Tinh 2000}) ({Predecessor:} 11... Rc8 12. Nxd7 Qxd7 13. Bf5 Qc7 14. Bxc8 Rxc8 15. Qf5 cxd4 16. Nf3 Ba6 17. Rd1 Be2 {0-1 (23) Nguyen,T-Do Nguyen Bao,N Ha Tinh 2000}) 12. exd4 Rc8 13. Qb1 Bb4 14. Nxd7 Nxd7 {[%eval 101,23] [%wdl 527,473,0]} (14... Qxd7 $11 {[%eval -10,26] [%wdl 14,955,31] remains equal.} 15. Bf5 Qc7) 15. Nf3 {[%eval 0,36] [%wdl 18,965,17]} (15. Bxh7+ $16 {[%eval 101,23] [%wdl 527,473,0]} Kh8 16. Bd3) 15... h6 $11 {The position is equal.} 16. a3 Bd6 17. Bd2 Re8 18. Re1 Rxe1+ 19. Qxe1 Qe7 {Weighted Error Value: White=0.18 (very precise) /Black=0.21 (precise)} 1/2-1/2 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.2"] [White "Otavio, De Souza Laba"] [Black "Guilherme, De Moura Silva"] [Result "1/2-1/2"] [ECO "E07"] [WhiteElo "1853"] [BlackElo "1846"] [Annotator "Stockfish 16.1"] [PlyCount "44"] [EventDate "2024.06.10"] {[%evp 14,44,36,3,44,39,42,33,79,27,56,51,92,100,126,96,125,0,0,13,11,-55,-58,-53,-49,-67,-51,-105,-27,-33,-33,-153,35]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 Be7 6. O-O O-O 7. Nc3 c6 8. Bf4 Nh5 $146 {E07: Closed Catalan: Main Line (5 Nf3 0-0 6 0-0 Nbd7).} ({Relevant:} 8... dxc4 9. a4 {Against b5} Nd5 10. Bd2 {[%eval -65,26] [%wdl 3,760,237]} (10. a5 $11 {[%eval -11,28] [%wdl 19,939,42]}) 10... b6 11. h4 a5 12. e4 Nxc3 {[%eval -6,26] [%wdl 18,954,28]} ({Better is} 12... Nb4 $1 $15 {[%eval -64,23] [%wdl 2,780,218]}) 13. bxc3 $11 b5 14. e5 Nb6 15. Ng5 {Threatens to win with axb5.} h6 16. Nh3 b4 17. Qg4 {[%eval -67,27] [%wdl 1,783,216]} (17. Bxh6 $11 {[%eval 0,37] [%wdl 16,968,16]} gxh6 18. Qg4+ Kh8 19. Qh5) 17... f5 $15 18. exf6 {[%eval -133,27] [%wdl 0,188,812]} (18. Qg6 $15 {[%eval -58,23] [%wdl 1,847,152]} Qe8 19. Qxe8 Rxe8 20. cxb4 axb4 21. Rfb1) 18... Bxf6 19. Qg6 {Be4 is the strong threat.} bxc3 20. Bxh6 {[%eval -168,23] [%wdl 0,45,955]} (20. Bxc3 $17 {[%eval -105,26] [%wdl 0,429,571]} Nd5 21. Rac1) 20... Qe8 $19 21. Qxe8 {[%eval -226,27] [%wdl 0,3,997]} (21. Qb1 $17 {[%eval -160,29] [%wdl 0,60,940]} Bxd4 22. Be3) 21... Rxe8 $19 22. Bxc6 {[%eval -353,23] [%wdl 0,0,1000]} (22. Bg5 $142 {[%eval -217,27] [%wdl 0,4,996]} Nd5 23. Bxf6 gxf6 24. Nf4) 22... gxh6 $19 23. Bxe8 e5 {Against Nf4} 24. Bc6 {And now dxe5 would win.} Bxh3 25. Bxa8 {[%eval -489,22] [%wdl 0,0,1000]} (25. Rfb1 {[%eval -326,26] [%wdl 0,0,1000] was worth a try.} Rb8 26. dxe5 Bxe5 27. Rb5) 25... exd4 $19 26. Bg2 Bxg2 27. Kxg2 c2 {0-1 (28) Giri,A (2772)-Sadhwani,R (2603) Chess.com INT 2023. Inhibits Rab1.}) ({RR} 8... dxc4 9. e4 a5 10. Re1 a4 11. d5 Bb4 12. dxe6 fxe6 13. a3 Bc5 14. Nxa4 Ba7 15. Bd6 b5 16. Bxf8 Qxf8 17. Nc3 Nc5 18. Ne5 Nb3 19. Nxc6 Bxf2+ 20. Kxf2 Ng4+ 21. Kg1 Qc5+ 22. Nd4 e5 23. h3 {Suleymenov,A (2513)-Gukesh,D (2720) Samarkand UZB 2023 0-1 (31)}) ({RR} 8... dxc4 9. e4 Nb6 10. Qe2 Bd7 11. Ne5 Rc8 12. Rfd1 c5 13. d5 exd5 14. Nxd7 Nfxd7 15. Nxd5 Nxd5 16. Rxd5 Qe8 17. Bh3 Rd8 18. Bxd7 Rxd7 19. Qxc4 Qc8 20. Rad1 Rfd8 21. Qa4 Rxd5 22. exd5 Bd6 23. Bxd6 {Meshkovs,N (2532)-Lupulescu,C (2589) chess.com INT 2024 1-0 (64)}) ({RR} 8... b6 9. cxd5 cxd5 10. Nb5 Bb7 11. Bc7 Qc8 12. Rc1 Ba6 13. Nd6 Bxd6 14. Bxd6 Qb7 15. Rc7 Qb8 16. Rxd7 Qc8 17. Rc7 Qd8 18. Bxf8 Qxc7 19. Ba3 Rc8 20. Re1 Ne4 21. Bf1 Bc4 22. e3 Bxa2 23. Ba6 {Yankelevich,L (2413)-Shevchuk,O (2093) chess.com INT 2024 1-0 (46)}) 9. Bc1 f5 {Inhibits e4.} 10. b3 {[#]} Kh8 $146 {White is slightly better.} ({Predecessor:} 10... Bd6 11. Bb2 Qe7 12. e3 {[%CAl Of3e5]} Nhf6 13. Ne2 b6 14. Ne5 Bb7 15. Nf4 Ne4 16. Rc1 Rac8 17. Qe2 Rfd8 18. Rfd1 Ndf6 19. f3 Ng5 $1 20. c5 Bxe5 21. dxe5 Nd7 22. b4 Nf7 23. e4 {Strongly threatening exf5.} Nfxe5 {[%CAl Rb6c5]} 24. exf5 exf5 25. Re1 {[%CAl Rb2e5]} Re8 26. Bd4 {[%eval 8,28] [%wdl 12,983,5]} (26. Nh5 $14 {[%eval 70,21] [%wdl 194,806,0]} Qf8 27. Nxg7) 26... Qf7 $11 27. Qb2 {[%CAl Rd4e5]} Nc4 28. Qc3 bxc5 29. bxc5 Nf8 30. Bf1 Ba6 31. a4 Rc7 32. Nd3 Rce7 33. Rxe7 Rxe7 34. Ne5 {[%eval -70,27] [%wdl 0,833,167]} (34. Nb4 $11 {[%eval 26,25] [%wdl 18,981,1]} Bb7 35. Bxc4 dxc4 36. a5) 34... Nxe5 $15 35. Bxa6 Neg6 36. Rb1 {[#]} h5 {[%eval -7,25] [%wdl 2,993,5]} (36... f4 $1 $17 {[%eval -117,24] [%wdl 0,279,721]} 37. Rb8 fxg3 38. hxg3 h5) 37. Rb8 {[%eval -120,22] [%wdl 0,248,752] [#]} (37. f4 $1 $11 {[%eval -7,25] [%wdl 2,993,5]}) 37... Kh7 {[%eval -4,27] [%wdl 2,994,4]} (37... f4 $1 $17 {[%eval -120,22] [%wdl 0,248,752]} 38. Bf2 fxg3 39. hxg3 Qf5) 38. Bd3 {[%eval -55,24] [%wdl 0,930,70]} (38. f4 $11 {[%eval -4,27] [%wdl 2,994,4]}) 38... Ne6 $15 39. Bf2 {[%eval -173,21] [%wdl 0,15,985]} (39. Be3 $15 {[%eval -52,27] [%wdl 0,942,58]}) 39... Ng5 $19 40. Kg2 {Sethuraman,S (2649)-Santiago,Y (2473) Hanoi 2018 0-1}) ({Predecessor:} 10... Bd6 11. Bb2 Qe7 12. e3 Nhf6 13. Ne2 b6 14. Ne5 Bb7 15. Nf4 Ne4 16. Rc1 {0-1 (49) Sethuraman,S (2649)-Santiago,Y (2473) Hanoi 2018}) 11. Ne1 {[%eval 27,26] [%wdl 69,921,10]} (11. Bb2 $16 {[%eval 79,23] [%wdl 332,667,1]}) 11... Qe8 12. Nd3 Bf6 {[%CAl Be7f6,Bf6e5,Be5g7][%mdl 32]} 13. e3 {[%CAl Rc4d5]} g5 14. Bb2 Rg8 15. Ne5 {[%eval 13,23] [%wdl 30,960,10]} (15. Re1 $16 {[%eval 125,23] [%wdl 747,253,0]}) 15... Nxe5 $11 16. dxe5 Bxe5 17. f4 {[%eval -55,27] [%wdl 2,858,140]} (17. cxd5 $11 {[%eval 11,26] [%wdl 26,964,10]} exd5 18. Rc1) 17... gxf4 $15 18. exf4 Bg7 19. Re1 {[%CAl Rc4d5]} Qf7 20. cxd5 {[%eval -105,22] [%wdl 0,432,568]} (20. Qc2 $15 {[%eval -51,27] [%wdl 1,889,110]}) 20... cxd5 {[%eval -27,33] [%wdl 3,958,39]} (20... exd5 $17 {[%eval -105,22] [%wdl 0,432,568]} 21. Na4 Nf6) 21. Qd2 Bd7 22. Nxd5 {[%eval -153,26] [%wdl 0,78,922]} Bc6 $2 {[%eval 35,22] [%wdl 49,949,2] Weighted Error Value: White=0.49/Black=0.28 (precise)} (22... exd5 $17 {[%eval -153,26] [%wdl 0,78,922]} 23. Bxd5 Qg6 24. Bxg8 Rxg8) 1/2-1/2 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.4"] [White "(), Da Silva Mendes Man"] [Black "Natacio, Goncalves Bezerra"] [Result "0-1"] [ECO "A11"] [WhiteElo "1879"] [BlackElo "2007"] [Annotator "Stockfish 16.1"] [PlyCount "66"] [EventDate "2024.06.10"] {[%evp 13,66,3,16,-10,7,-35,-29,-31,-37,-29,-21,-66,-76,-72,-65,-75,-73,-83,-74,-128,-127,-127,-89,-95,-81,-89,-93,-103,-101,-140,-125,-155,-138,-188,-179,-278,-278,-280,-280,-275,-276,-279,-10,-250,-223,-447,-445,-565,-557,-757,-753,-29997,-29998,-29998,-29999]} 1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 Bf5 5. O-O e6 {[%CAl Be7e6,Be6d5,Bd5d4][%mdl 32]} 6. d3 Be7 7. Nc3 $146 ({RR} 7. h3 h6 8. Qb3 Qb6 9. Be3 Qxb3 10. axb3 a6 11. Nc3 Nbd7 12. Nd4 Bh7 13. Nc2 O-O 14. Rfc1 Rfd8 15. Na4 e5 16. Nb6 Nxb6 17. Bxb6 Rd7 18. Ra4 Re8 19. Na3 e4 20. d4 g5 21. e3 Bd6 {Sivakumar,S (2364)-Pakleza,Z (2482) chess.com INT 2023 0-1 (90)}) ({RR} 7. cxd5 cxd5 8. Nh4 Bg4 9. h3 Bh5 10. g4 Bg6 11. Nxg6 hxg6 12. e4 Nc6 13. Nc3 O-O 14. exd5 exd5 15. Bf4 d4 16. Ne4 Nd5 17. Bd2 Qb6 18. Rb1 Ne3 19. fxe3 dxe3 20. Kh1 exd2 21. Qxd2 Rad8 {Domingo Nunez,A (2316)-Pakleza,Z (2482) chess.com INT 2024 0-1 (32)}) ({RR} 7. Qb3 Qb6 8. Be3 Qxb3 9. axb3 a6 10. Nh4 Bg6 11. Nxg6 hxg6 12. Bd2 Nbd7 13. Bc3 O-O 14. Nd2 Rac8 15. b4 Ne8 16. e4 dxc4 17. dxc4 Bf6 18. c5 Bxc3 19. bxc3 Ne5 20. f4 Ng4 21. Nc4 Nc7 {Chua,A (2308)-Lehtosaari,M (2149) chess.com INT 2024 1-0 (41)}) 7... O-O 8. h3 {A11: English Opening: 1...c6.} ({Relevant:} 8. Nh4 Bg4 9. h3 Bh5 $1 10. g4 Bg6 11. b3 a5 12. e3 Na6 13. Qe2 {[%eval -82,26] [%wdl 1,646,353]} (13. Nxg6 $14 {[%eval 38,27] [%wdl 90,905,5] keeps the upper hand.} hxg6 14. Bb2) 13... Nd7 {[%eval 37,23] [%wdl 85,910,5]} (13... Bb4 $1 $17 {[%eval -82,26] [%wdl 1,646,353][%CAl Rb4c3]} 14. Nxg6 hxg6) 14. Nxg6 $14 hxg6 15. d4 Re8 16. f4 Bb4 17. Bb2 f5 {[%eval 108,24] [%wdl 605,395,0]} ({Better is} 17... Nc7 $14 {[%eval 45,26] [%wdl 98,899,3]}) 18. g5 $16 Bxc3 19. Bxc3 Nc7 20. Rac1 {[%eval 76,23] [%wdl 271,729,0]} ({White should play} 20. a4 {[%eval 152,21] [%wdl 915,85,0]}) 20... Qb8 21. Rc2 Kf7 22. Rfc1 Rh8 23. Kh2 Ne8 24. c5 Nc7 {[%CAl Oe6e5]} 25. Be1 Qa7 26. Bf1 Na6 {[%eval 160,25] [%wdl 955,45,0]} (26... a4 $142 {[%eval 75,26] [%wdl 238,762,0]}) 27. Rb2 Nc7 28. Qc2 Rhb8 29. a4 Na6 30. Bc3 Nb4 31. Qd2 b6 32. Bxb4 axb4 33. cxb6 Rxb6 34. Rbc2 Rc8 35. Bb5 Nb8 36. Qxb4 Re8 37. Qd6 {[%eval 0,34] [%wdl 3,994,3]} (37. Qd2 $1 $16 {[%eval 118,25] [%wdl 737,263,0]}) 37... Re7 {Nakamura,H (2768)-Pakleza,Z (2496) Chess.com INT 2023 1-0}) 8... h6 {[#]} 9. g4 $146 ({Predecessor:} 9. Be3 Na6 10. cxd5 exd5 11. Rc1 Bd6 12. Qd2 Re8 13. a3 Nc7 14. Bf4 Ne6 {[%eval 53,27] [%wdl 144,854,2]} (14... Be7 $11 {[%eval -8,27] [%wdl 15,957,28]}) 15. Bxd6 $14 Qxd6 16. d4 {[%eval -43,23] [%wdl 3,900,97]} ({White should try} 16. e4 $14 {[%eval 54,26] [%wdl 141,857,2]} dxe4 17. dxe4 Qxd2 18. Nxd2) 16... Rad8 17. b4 Ne4 18. Qe1 N6g5 {[%eval -26,27] [%wdl 4,954,42]} (18... a5 $17 {[%eval -84,28] [%wdl 0,643,357]} 19. bxa5 Qxa3) 19. Kh2 {[%eval -95,21] [%wdl 0,532,468]} (19. Nxg5 $11 {[%eval -26,27] [%wdl 4,954,42]} Nxg5 20. h4) 19... Nxf3+ $17 20. Bxf3 Ng5 21. Bg2 $1 Bxh3 $2 {[%eval 122,24] [%wdl 748,252,0]} (21... Qe6 $15 {[%eval -51,27] [%wdl 1,891,108] stays ahead.} 22. h4 Ne4) 22. Bxh3 $16 {Qd2 is the strong threat.} Nf3+ 23. exf3 Rxe1 24. Rcxe1 Qf6 25. Re5 Qxf3 26. Re3 Qf6 27. Ne2 a5 {[%eval 182,21] [%wdl 985,15,0]} (27... Kf8 $16 {[%eval 107,28] [%wdl 593,407,0]}) 28. bxa5 $18 Ra8 {[#]} 29. Kg2 $1 {Black must now prevent Rb1.} Rxa5 30. Rb1 {Hoping for Re8+.} b5 31. Rbb3 {[%eval 122,27] [%wdl 767,233,0]} (31. Re8+ $18 {[%eval 233,24] [%wdl 999,1,0]} Kh7 32. Rb3) 31... Ra7 {[%eval 197,21] [%wdl 995,5,0]} (31... g6 $16 {[%eval 122,27] [%wdl 767,233,0] was called for.}) 32. Bg4 {[%eval 62,27] [%wdl 119,881,0]} (32. Re8+ $18 {[%eval 197,21] [%wdl 995,5,0]} Kh7 33. Rc8) 32... g6 $14 33. Bf3 Kg7 34. Rbd3 Qd6 {[%eval 103,26] [%wdl 550,450,0]} (34... h5 $11 {[%eval 3,31] [%wdl 5,992,3]}) 35. Rb3 {[%eval 15,31] [%wdl 9,989,2]} (35. Ng1 $16 {[%eval 103,26] [%wdl 550,450,0]}) 35... Qf6 $11 36. Red3 Ra4 37. Rb4 Ra7 38. Nc1 Qd6 {[%eval 98,20] [%wdl 465,535,0] Schneider,B (2405)-Luett,M Berlin 1994 1-0} (38... h5 $11 {[%eval 2,30] [%wdl 4,993,3]})) ({Predecessor:} 9. Be3 Na6 10. cxd5 exd5 11. Rc1 Bd6 12. Qd2 Re8 13. a3 Nc7 14. Bf4 Ne6 15. Bxd6 Qxd6 {1-0 (52) Schneider,B (2405)-Luett,M Berlin 1994}) 9... Bh7 10. cxd5 {Black has an edge.} exd5 11. Nd4 Nbd7 12. Nf5 Bxf5 13. gxf5 d4 14. Ne4 Qa5 15. Ng3 Bd6 {Inhibits Bf4.} 16. e4 {[%eval -128,24] [%wdl 0,230,770]} (16. Qe1 $142 {[%eval -74,25] [%wdl 1,727,272]} Qb6 17. Ne4) 16... dxe3 $1 $17 17. Bxe3 Qc7 18. Ne4 Bf4 19. Bd4 Be5 20. Bxe5 Qxe5 21. Ng3 Rfe8 ({And not} 21... Qxb2 22. Rb1 Qxa2 23. Rxb7 $17) 22. Qb3 Nc5 23. Qc4 Rad8 {Inhibits d4.} 24. Rfe1 {[%eval -278,29] [%wdl 0,0,1000]} (24. Rfd1 {[%eval -179,26] [%wdl 0,22,978] was necessary.} Rd4 25. Qc3) 24... Qxe1+ $19 25. Rxe1 Rxe1+ 26. Bf1 Nxd3 27. Kg2 Ne5 {[%eval -10,27] [%wdl 4,985,11]} (27... Nxb2 28. Qb4 Rb1 29. Be2 $11) (27... Rd1 $19 {[%eval -279,21] [%wdl 0,0,1000][%CAl Od8d4] And now ...Rd4! would win.} 28. Bxd3 R1xd3) 28. Qb4 $2 {[%eval -250,22] [%wdl 0,1,999] [#]} (28. Qc3 $1 $11 {[%eval -10,27] [%wdl 4,985,11] and White stays safe.} Rdd1 29. Be2 Rxe2 30. Nxe2) 28... Rdd1 $1 29. Qxb7 $2 {[%eval -447,23] [%wdl 0,0,1000]} (29. Be2 {[%eval -223,22] [%wdl 0,2,998]} Nd5 30. Qe4) 29... Nd5 30. Qb8+ Kh7 31. Qb7 Nf4+ 32. Kh2 Nf3+ 33. Kh1 Rxf1+ {Weighted Error Value: White=0.81/Black=0.32} 0-1 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.5"] [White "Alberto, Horacio Lombardi"] [Black "Luis, Felipe Garcia De Ol"] [Result "0-1"] [ECO "D35"] [WhiteElo "1617"] [BlackElo "1883"] [Annotator "Stockfish 16.1"] [PlyCount "74"] [EventDate "2024.06.10"] {[%evp 9,74,33,24,10,10,12,44,35,96,0,5,-4,-1,0,88,0,30,28,32,27,82,40,38,-163,-37,-39,-37,-42,24,-3,-9,-76,0,-100,-21,-15,-12,-414,-420,-420,326,324,318,286,328,321,301,293,275,-457,-450,-451,-452,-473,-439,-466,-455,-527,-525,-516,-475,-572,-570,-608,-555,-603,-598]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4 5. cxd5 exd5 6. a3 {D35: Queen's Gambit Declined: Exchange Variation.} ({Relevant:} 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4 9. Qc2 h5 10. f3 Nxg3 11. hxg3 {[%CAl Og3g4]} Be6 {Inhibits g4.} 12. Bd3 {[%CAl Og3g4]} c6 13. O-O-O Nd7 14. f4 Bg4 15. Nf3 Qe7 16. e4 Bxc3 {[%eval 65,26] [%wdl 199,800,1]} ({Black should try} 16... dxe4 $1 $11 {[%eval 0,28] [%wdl 17,965,18]} 17. Bxe4 gxf4) 17. Qxc3 $14 {Strongly threatening Rde1.} Bxf3 18. gxf3 dxe4 19. Bxe4 {Hoping for d5.} gxf4 20. g4 O-O-O 21. d5 h4 {[%eval 183,25] [%wdl 979,21,0]} (21... Kb8 $16 {[%eval 88,29] [%wdl 382,618,0]}) 22. dxc6 $18 Nc5 23. Bf5+ Kb8 24. Kb1 $1 {Rc1 is the strong threat.} b6 {[%eval 300,28] [%wdl 1000,0,0]} (24... Rxd1+ $16 {[%eval 160,25] [%wdl 948,52,0]} 25. Rxd1 Re8) 25. Rd7 Rxd7 26. cxd7 Rd8 27. Qd4 Nxd7 28. Rd1 Qc5 29. Qxf4+ Qc7 30. Qd2 h3 31. Be4 a5 {[%eval 396,22] [%wdl 1000,0,0]} (31... Qe5 {[%eval 271,26] [%wdl 1000,0,0] was called for.} 32. a3 h2) 32. Qd5 $18 {[%csl Ge4][%CAl Rd5a8]} Ka7 {Inhibits Qa8+.} 33. Qxf7 h2 34. Qh7 Kb8 35. a3 Qe5 {Caruana,F (2803)-Nepomniachtchi,I (2758) Toronto 2024 ½-½ (109)}) ({RR} 6. Qa4+ Nc6 7. e3 h6 8. Bxf6 Qxf6 9. Bd3 Qg5 10. g3 O-O 11. Nge2 Bg4 12. h4 Qe7 13. h5 Rad8 14. Rh4 Bd7 15. Qd1 Qg5 16. a3 Bxc3+ 17. Nxc3 Ne7 18. Qf3 c6 19. Rf4 Nc8 20. O-O-O f5 {Fedoseev,V (2683)-Ter Sahakyan,S (2643) Samarkand UZB 2023 1-0 (71)}) 6... Bxc3+ 7. bxc3 O-O $146 {[%CAl Oc7c5]} ({RR} 7... h6 8. Bf4 O-O 9. e3 c5 10. Bd3 Ne4 11. Ne2 cxd4 12. Bxe4 dxe4 13. cxd4 b6 14. O-O Ba6 15. Rc1 Qd7 16. Re1 Nc6 17. Qa4 Bb7 18. Red1 Qg4 19. Ng3 Ne7 20. h3 Qe6 21. Rc7 Bc6 22. Qc2 {Ambartsumova,K (2418)-Kozak,A (2600) chess.com INT 2024 0-1 (36)}) ({RR} 7... h6 8. Bf4 O-O 9. e3 c6 10. Bd3 Nbd7 11. Nf3 Re8 12. O-O Ne4 13. c4 Ndf6 14. cxd5 Nxd5 15. Be5 Ng5 16. h3 Nc3 17. Qc2 Nxf3+ 18. gxf3 Nd5 19. Kh2 Qh4 20. Bf5 Qh5 21. Bg4 Bxg4 22. fxg4 {Ambartsumova,K (2406)-Grahn,V (2247) chess.com INT 2024 0-1 (48)}) ({RR} 7... h6 8. Bh4 g5 9. Bg3 Ne4 10. Qb3 h5 11. f3 Nxg3 12. hxg3 Nc6 13. e3 Qd6 14. Ne2 Bf5 15. Ra2 O-O-O 16. Rb2 b6 17. Qa4 Kb8 18. f4 Rde8 19. c4 Rxe3 20. c5 Qf6 21. cxb6 axb6 22. Kf2 {Silva,J (1960)-Grahn,V (2273) chess.com INT 2024 0-1 (43)}) 8. e3 {White is slightly better.} Bf5 {[%eval 96,25] [%wdl 482,517,1]} (8... c5 $14 {[%eval 35,30] [%wdl 105,885,10]}) 9. Nf3 {[%eval 0,36] [%wdl 30,940,30] [#]} (9. Qf3 $16 {[%eval 96,25] [%wdl 482,517,1]} Be4 10. Bxf6) 9... c5 $146 ({Predecessor:} 9... h6 10. Bh4 Nbd7 11. Bd3 Bxd3 12. Qxd3 c5 13. O-O Rc8 14. Rfb1 b6 15. Qa6 Qc7 16. Nd2 Rfe8 17. Qd3 {[%eval -46,27] [%wdl 2,897,101]} (17. a4 $11 {[%eval 17,29] [%wdl 33,959,8]}) 17... Ne4 18. f3 Nxd2 19. Qxd2 cxd4 20. cxd4 Qc3 21. Qxc3 Rxc3 22. Rb5 g5 23. Bf2 Nf6 24. a4 Rec8 25. h4 Rc1+ 26. Rxc1 Rxc1+ 27. Kh2 Ra1 28. Rb4 g4 29. Bg3 Ra2 {White must now prevent ...gxf3.} 30. Be5 Nd7 {Threatens to win with ...gxf3.} 31. fxg4 Nxe5 32. dxe5 Rc2 33. Rd4 Rc3 34. a5 Rc5 {[%eval 64,29] [%wdl 124,876,0]} (34... Rxe3 $11 {[%eval 0,49] [%wdl 4,992,4]} 35. Rxd5 bxa5) 35. axb6 axb6 36. Kg3 Kg7 37. Kf3 Kg6 $2 {[%eval 233,28] [%wdl 999,1,0]} (37... b5 $16 {[%eval 82,27] [%wdl 269,731,0]}) 38. e4 $2 {[%eval 3,39] [%wdl 4,993,3]} (38. Kf4 $18 {[%eval 233,28] [%wdl 999,1,0]}) 38... dxe4+ 39. Kxe4 {Cadjenovic,D (1809)-Milovic,S (1348) Podgorica 2024 1-0}) ({Predecessor:} 9... h6 10. Bh4 Nbd7 11. Bd3 Bxd3 12. Qxd3 c5 13. O-O Rc8 14. Rfb1 b6 15. Qa6 Qc7 16. Nd2 {1-0 (57) Cadjenovic,D (1809)-Milovic,S (1348) Podgorica 2024}) 10. Bd3 Bxd3 11. Qxd3 Qd6 {[%eval 88,23] [%wdl 406,593,1]} (11... Nbd7 $11 {[%eval 0,27] [%wdl 26,948,26]}) 12. Bf4 {[%eval 0,26] [%wdl 24,952,24]} (12. dxc5 $1 $16 {[%eval 88,23] [%wdl 406,593,1]} Qa6 13. Qxa6 Nxa6 14. Bxf6 gxf6 15. Rd1) 12... Qb6 13. O-O c4 14. Qc2 Ne4 {[%eval 82,25] [%wdl 349,650,1]} (14... Qe6 $11 {[%eval 27,25] [%wdl 58,935,7] remains equal.}) 15. Rfb1 Qa5 16. Nd2 $2 {[%eval -163,28] [%wdl 0,65,935]} (16. Qb2 $14 {[%eval 38,27] [%wdl 80,916,4] keeps the upper hand.}) 16... Qxc3 {[%eval -37,29] [%wdl 3,925,72]} (16... Nxc3 $19 {[%eval -163,28] [%wdl 0,65,935]} 17. Re1 (17. Rxb7 Qa6 $17) 17... Nc6) 17. Qxc3 $15 Nxc3 18. Rxb7 Nc6 {[%eval 24,27] [%wdl 39,956,5]} (18... Ne2+ $15 {[%eval -42,27] [%wdl 3,914,83]} 19. Kf1 Nxf4 20. exf4 Nc6) 19. Bd6 $36 {[%mdl 2048] White is pushing.} (19. Kf1 $5 {[%CAl Ra1c1]}) 19... Rfd8 20. Bb4 {[%eval -76,23] [%wdl 0,726,274] [#]} (20. Bg3 $1 $11 {[%eval -9,28] [%wdl 8,973,19]}) 20... Nxb4 {[%eval 0,30] [%wdl 12,976,12]} ({Black should play} 20... Na4 $1 $17 {[%eval -76,23] [%wdl 0,726,274]}) 21. Rxb4 {[%eval -100,27] [%wdl 0,485,515]} (21. axb4 $11 {[%eval 0,30] [%wdl 12,976,12]} Rab8 22. Raxa7 Rxb7 23. Rxb7) 21... Rdb8 {[%eval -21,29] [%wdl 4,967,29]} (21... a5 $17 {[%eval -100,27] [%wdl 0,485,515]} 22. Rb2 Rab8) 22. Nb1 $11 Nb5 23. Ra2 $2 {[%eval -414,27] [%wdl 0,0,1000][%mdl 8192]} (23. a4 $11 {[%eval -12,30] [%wdl 5,977,18]} Nc7 24. Rxb8+ Rxb8 25. Nc3) 23... a5 $19 24. Rbb2 Nxd4 $4 {[%eval 326,25] [%wdl 1000,0,0][%mdl 8192]} 25. exd4 $18 Rb3 26. g3 Rab8 27. Rxb3 Rxb3 {[%mdl 4096] Endgame KRN-KR} 28. Nd2 Rd3 29. Nb1 $4 {[%eval -457,23] [%wdl 0,0,1000][%mdl 8192]} (29. Nf1 $18 {[%eval 275,28] [%wdl 1000,0,0] and life is good for White.}) 29... Rd1+ $19 {Black is clearly winning.} 30. Kg2 Rxb1 {KR-KR} 31. Rc2 Rb3 32. a4 Kf8 33. Kf1 Rd3 34. Rb2 Rxd4 35. Rc2 Ke7 36. Ke2 Kd6 37. Ke3 Rd3+ {Weighted Error Value: White=0.93/Black=0.52} 0-1 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.6"] [White "Clara, Oliveira Silva"] [Black "Carlos, Alberto De Carvalho"] [Result "1/2-1/2"] [ECO "A40"] [WhiteElo "1395"] [BlackElo "1957"] [Annotator "Stockfish 16.1"] [PlyCount "55"] [EventDate "2024.06.10"] {[%evp 9,55,42,82,71,78,74,90,19,34,31,67,7,43,-7,25,18,43,43,115,72,78,28,31,-7,-13,-88,-28,-25,70,42,103,106,133,137,112,0,0,4,3,4,18,-136,-130,-303,-282,-349,-297,-294]} 1. d4 e6 2. Nf3 b6 3. c4 Bb7 4. e3 d6 $146 ({RR} 4... Bb4+ 5. Nfd2 f5 6. a3 Bd6 7. Nc3 Nf6 8. b4 a5 9. bxa5 Rxa5 10. c5 bxc5 11. Nb3 Ra8 12. Nxc5 Bc6 13. Be2 O-O 14. O-O Nd5 15. Nxd5 Bxd5 16. Bf3 Bxf3 17. Qxf3 Nc6 18. Nxe6 dxe6 19. Qxc6 {Livaic,L (2561)-Sivakumar,S (2393) chess.com INT 2024 1-0 (32)}) 5. Nc3 Nd7 6. Bd3 {A40: Unusual replies to 1 d4.} g6 7. O-O Bg7 8. b3 {[%eval 19,28] [%wdl 62,921,17]} ({Relevant:} 8. e4 Ne7 9. h3 h6 10. Re1 g5 11. d5 {[%eval -21,24] [%wdl 12,932,56]} (11. a4 $16 {[%eval 81,23] [%wdl 350,649,1]}) 11... Ng6 {[%eval 38,25] [%wdl 96,898,6]} (11... Bxc3 $11 {[%eval -21,24] [%wdl 12,932,56]} 12. bxc3 Ng6) 12. Be3 {[%eval -54,24] [%wdl 3,834,163]} (12. Ne2 $14 {[%eval 38,25] [%wdl 96,898,6]}) 12... Nde5 {[%eval 36,22] [%wdl 85,909,6]} (12... Bxc3 $15 {[%eval -54,24] [%wdl 3,834,163]} 13. bxc3 c5) 13. Nxe5 $14 Bxe5 14. Rc1 h5 {[%CAl Og5g4]} 15. Nb5 {[%eval -55,20] [%wdl 2,845,153]} (15. Qd2 $14 {[%eval 46,24] [%wdl 109,888,3]}) 15... g4 $1 $15 16. hxg4 {[%eval -105,24] [%wdl 0,431,569]} (16. b4 $15 {[%eval -47,23] [%wdl 3,887,110]}) 16... hxg4 $17 17. Qxg4 a6 {[%eval -14,29] [%wdl 8,965,27]} (17... Bc8 $1 $17 {[%eval -104,25] [%wdl 0,439,561]}) 18. Nd4 $11 {[%CAl Od4e6] Hoping for Nxe6!} Rh4 19. Qd1 Bxd4 20. Bxd4 {Black must now prevent g3.} Qg5 21. Be3 Qf6 22. g3 Rh7 $1 23. Kg2 Rg7 {[%eval 82,20] [%wdl 311,689,0]} (23... O-O-O $11 {[%eval -29,21] [%wdl 3,959,38] remains equal.}) 24. Rh1 $16 O-O-O 25. Kf1 {[%eval 21,24] [%wdl 24,973,3]} (25. Rh5 $16 {[%eval 84,22] [%wdl 327,673,0]}) 25... Qxb2 {[%eval 86,21] [%wdl 351,649,0]} (25... Ne5 $1 $11 {[%eval 21,24] [%wdl 24,973,3]}) 26. Be2 {aiming for Bd4.} Rgg8 {[%eval 189,23] [%wdl 988,12,0]} (26... Qf6 $1 $14 {[%eval 62,24] [%wdl 143,857,0]}) 27. Bd4 $18 Qa3 28. Rh7 {[%eval 38,25] [%wdl 45,954,1]} (28. Rc3 $18 {[%eval 168,23] [%wdl 970,30,0]} Qa5 29. Bf6) 28... Kb8 $2 {[%eval 190,25] [%wdl 991,9,0]} (28... e5 $14 {[%eval 38,25] [%wdl 45,954,1]} 29. Be3 Rh8 30. Rxh8 Rxh8) 29. Qd2 {[%eval 108,27] [%wdl 607,393,0]} ({Better is} 29. Rc3 $18 {[%eval 190,25] [%wdl 991,9,0]} Qa5 30. Bf6) 29... Rdf8 $16 30. Rb1 {Strongly threatening dxe6.} Qa4 31. dxe6 $1 Bxe4 $2 {[%eval 393,21] [%wdl 1000,0,0][%mdl 8192]} (31... Qc6 $16 {[%eval 142,23] [%wdl 904,96,0]}) 32. exf7 $18 Bxb1 33. fxg8=Q Rxg8 34. Bxb6 $1 Rc8 35. Qb2 {White wants to mate with Bxc7+.} Be4 {[%eval 32716,38] [%wdl 1000,0,0]} (35... Bd3 $18 {[%eval 495,27] [%wdl 1000,0,0]}) 36. Bxc7+ Ka8 37. Bb6 Bb7 {Caruana,F (2786)-Nakamura,H (2780) Chess.com INT 2023 ½-½ (78)}) (8. e4 $16 {[%eval 90,25] [%wdl 437,562,1]}) 8... Ne7 9. Bb2 {[#]} h6 $146 ({Predecessor:} 9... O-O 10. Rc1 a6 11. Qe2 c5 12. Rfd1 e5 {[%eval 135,23] [%wdl 807,193,0]} (12... Nf6 $11 {[%eval 20,23] [%wdl 50,939,11] keeps the balance.}) 13. dxe5 $16 Nxe5 14. Nxe5 Bxe5 15. Be4 Bxc3 16. Bxb7 Bxb2 17. Qxb2 Ra7 18. Bf3 b5 {[%eval 244,21] [%wdl 998,2,0]} (18... Qd7 $16 {[%eval 132,24] [%wdl 810,190,0]}) 19. Qf6 {[%eval 129,27] [%wdl 793,207,0]} (19. Qd2 $1 $18 {[%eval 244,21] [%wdl 998,2,0]}) 19... Nc8 {[%eval 187,23] [%wdl 980,20,0]} (19... Nf5 $16 {[%eval 129,27] [%wdl 793,207,0] was called for.} 20. Qxd8 Rxd8) 20. Qxd8 $18 Rxd8 21. cxb5 $1 axb5 22. Rxc5 $1 Rxa2 23. Rxb5 Ne7 24. g3 {[%eval 131,26] [%wdl 822,178,0]} (24. h4 $18 {[%eval 190,25] [%wdl 987,13,0]}) 24... h5 $2 {[%eval 287,22] [%wdl 1000,0,0]} (24... Kf8 $16 {[%eval 131,26] [%wdl 822,178,0]} 25. Rc1 Rd7 26. Rb8+ Kg7) 25. Rb7 $18 Kf8 26. Rc1 $1 Ng8 27. Rcc7 Nh6 28. Bd5 Re8 29. Bxf7 {1-0 (29) Kosakowski,J (2486)-Piorun,K (2597) Chess.com INT 2024}) ({Predecessor:} 9... O-O 10. Rc1 a6 11. Qe2 c5 12. Rfd1 e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Be4 Bxc3 16. Bxb7 Bxb2 17. Qxb2 {1-0 (29) Kosakowski,J (2486)-Piorun,K (2597) Chess.com INT 2024}) 10. Nd2 {[%eval 7,24] [%wdl 36,942,22]} (10. Qe2 $14 {[%eval 67,22] [%wdl 246,751,3]}) 10... f5 11. f4 a6 12. Be2 c5 13. Bf3 Qc7 {[%eval 115,21] [%wdl 659,341,0]} (13... Qc8 $14 {[%eval 43,24] [%wdl 108,888,4]}) 14. d5 e5 15. fxe5 Nxe5 16. a4 O-O 17. Qe2 {[%eval -88,26] [%wdl 0,607,393] Inhibits Nd3.} (17. Qc2 $11 {[%eval -13,23] [%wdl 9,963,28]}) 17... g5 {[%eval -28,27] [%wdl 5,947,48]} ({Much weaker is} 17... Nxf3+ 18. Qxf3 g5 19. Qh5 $11) ({Black should play} 17... Rae8 $17 {[%eval -88,26] [%wdl 0,607,393]}) 18. Bh5 $11 Kh7 {[%eval 70,23] [%wdl 228,771,1]} ({Black should try} 18... Bc8 $11 {[%eval -25,24] [%wdl 5,952,43]}) 19. Nf3 N7g6 {[%eval 103,26] [%wdl 553,447,0]} (19... Ng8 $14 {[%eval 42,24] [%wdl 82,916,2]}) 20. Nxe5 Bxe5 21. Qc2 $1 Bc8 {[#]} 22. g3 {[%eval 4,28] [%wdl 12,980,8]} (22. Rf2 $1 $16 {[%eval 112,26] [%wdl 654,346,0]}) 22... Qg7 23. Rf2 $1 Bd7 24. Raf1 {[%CAl Og3g4]} g4 25. Kh1 $2 {[%eval -136,20] [%wdl 0,141,859]} (25. Bxg6+ $11 {[%eval 18,25] [%wdl 20,976,4]} Qxg6 26. Ne2) 25... Ne7 $17 26. e4 $2 {[%eval -303,25] [%wdl 0,0,1000]} (26. h4 $17 {[%eval -130,25] [%wdl 0,180,820]}) 26... Qg5 $19 27. exf5 Qxh5 ({And not} 27... Nxf5 {[#]} 28. Ne4 $1 Qxh5 29. Bxe5 dxe5 30. Nd6 $11) 28. f6+ {[%mdl 32768] Weighted Error Value: White=0.49/Black=0.27 (precise) . An unexpected result.} 1/2-1/2 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.7"] [White "Rodolfo, De Araujo Bezerra"] [Black "Herivaldo, Souza E Silva"] [Result "1-0"] [ECO "B08"] [WhiteElo "1709"] [BlackElo "1613"] [Annotator "Stockfish 16.1"] [PlyCount "101"] [EventDate "2024.06.10"] {[%evp 13,101,64,62,32,110,94,107,51,81,73,141,114,160,158,158,161,164,142,154,144,188,167,155,141,130,137,181,194,271,122,132,121,139,16,23,32,115,32,124,18,120,77,93,58,436,444,447,434,466,430,448,451,486,486,486,489,490,495,573,608,29991,425,418,333,333,307,375,356,413,413,411,408,448,421,693,685,29949,29950,1081,945,29995,29995,29995,29996,29996,29997,29997,29998,29998,29999]} 1. e4 d6 2. Nf3 Nf6 3. Nc3 Bg4 4. Be2 Nc6 5. d4 {[%CAl Bd2d4,Bd4d5][%mdl 32]} g6 6. O-O Bg7 7. Be3 O-O 8. h3 {B08: Pirc Defence: Classical System.} Bd7 {[%eval 110,22] [%wdl 611,388,1]} ({Relevant:} 8... Bxf3 9. Bxf3 e5 10. dxe5 dxe5 11. Be2 Nd4 12. Bc4 c6 13. a4 (13. f4 $5 {[%CAl Rf4e5]} Ne8 14. f5 $11) 13... a6 {[%eval 51,23] [%wdl 139,858,3]} (13... Qe7 $11 {[%eval 0,28] [%wdl 23,955,22]}) 14. a5 Qc7 {[%eval 108,24] [%wdl 604,396,0]} (14... Qe7 $14 {[%eval 38,25] [%wdl 87,908,5]}) 15. Re1 {[%eval 49,26] [%wdl 122,875,3]} ({White should play} 15. Bd3 $1 $16 {[%eval 108,24] [%wdl 604,396,0]}) 15... Rad8 $14 16. Qc1 Rd7 {[%eval 184,23] [%wdl 973,27,0]} (16... Qe7 $14 {[%eval 35,25] [%wdl 71,925,4]}) 17. Na4 $18 Nxe4 {[%eval 296,23] [%wdl 1000,0,0]} (17... Re8 $142 {[%eval 184,27] [%wdl 973,27,0]} 18. c3 Ne6) 18. c3 $1 $18 c5 19. Nb6 Nf5 20. Nxd7 Qxd7 21. Qc2 Nxe3 22. Qxe4 Nxc4 23. Qxc4 Qc7 24. Red1 h5 25. Rd5 Rc8 26. Rad1 Qc6 27. Rd6 Qe8 28. Qd5 e4 29. Qxb7 e3 30. Qxc8 Qxc8 31. Rd8+ {1-0 (31) Dubov,D (2702)-Aravindh,C (2608) Chess.com INT 2022}) (8... Bxf3 $14 {[%eval 32,26] [%wdl 95,894,11]} 9. Bxf3 e6) 9. d5 Nb8 10. Bd4 {[%eval 51,23] [%wdl 159,837,4]} (10. Re1 $16 {[%eval 107,25] [%wdl 579,420,1]}) 10... c5 11. Be3 {[#]} h6 $146 {[%eval 141,24] [%wdl 833,167,0]} ({Predecessor:} 11... Qc7 {[%eval 157,26] [%wdl 904,96,0] 11...b5 0.78} 12. Nd2 a6 13. a4 $1 {Inhibits b5.} b6 14. f4 Bc8 15. Qe1 e6 16. Bf3 {[%eval 46,24] [%wdl 106,891,3]} ({White should try} 16. Nf3 $16 {[%eval 148,26] [%wdl 884,116,0]}) 16... exd5 $14 17. exd5 Re8 18. Qf2 {[%CAl Of4f5]} Bf5 19. Rac1 Nfd7 $2 {[%eval 205,21] [%wdl 991,9,0]} (19... Nbd7 $11 {[%eval 4,26] [%wdl 17,972,11]}) 20. Kh1 $18 {Hoping for g4.} Nf8 21. g4 Bd7 {[%eval 288,20] [%wdl 1000,0,0]} (21... Bc8 $142 {[%eval 201,22] [%wdl 990,10,0]} 22. Rce1 f5) 22. h4 $2 {[%eval -20,25] [%wdl 4,969,27]} ({Only move:} 22. f5 $1 $18 {[%eval 288,20] [%wdl 1000,0,0][%CAl Rf5f6]}) 22... Qd8 $2 {[%eval 144,29] [%wdl 890,110,0]} (22... f5 $11 {[%eval -20,25] [%wdl 4,969,27]} 23. Rg1 Qd8) 23. Nc4 {Black must now prevent f5.} b5 {[%eval 180,26] [%wdl 979,21,0]} (23... Bxc3 $16 {[%eval 100,22] [%wdl 511,489,0] keeps fighting.} 24. bxc3 Bxa4) 24. Nxd6 $18 Rxe3 25. Qxe3 Bxg4 26. Bxg4 {Nce4 is the strong threat.} Qxd6 27. axb5 axb5 28. Nxb5 Qb6 29. c4 Qf6 30. Qf2 Ra2 31. Nc3 Ra7 32. Ne4 Qe7 33. Bf3 Bd4 34. Qg3 Ra2 35. Rc2 Na6 36. Re2 Qb7 37. Nd6 Qc7 38. Nb5 Qb8 39. Nxd4 cxd4 40. Rff2 Nd7 41. Rd2 {Leao,C-Cathcart,J Catanduva 2010 1-0}) (11... b5 $142 {[%eval 73,24] [%wdl 285,713,2]}) ({Predecessor:} 11... Qc7 12. Nd2 a6 13. a4 b6 14. f4 Bc8 15. Qe1 e6 16. Bf3 exd5 17. exd5 Re8 {1-0 (50) Leao,C-Cathcart,J Catanduva 2010}) 12. Nd2 a6 13. a4 {Prevents b5.} Be8 14. f4 Nbd7 15. Nf3 Nh5 {[%CAl Ob7b5]} 16. Qe1 Nhf6 17. a5 Qc7 18. Nd2 b5 19. axb6 $1 Qxb6 20. Nc4 Qb7 {[%eval 271,20] [%wdl 1000,0,0]} (20... Qc7 $142 {[%eval 194,26] [%wdl 985,15,0]} 21. f5 Nb6) 21. Ra2 {[%eval 122,25] [%wdl 740,260,0]} (21. e5 $18 {[%eval 271,20] [%wdl 1000,0,0] and White stays clearly on top.}) 21... Nb6 $16 22. Na5 Qc8 23. Nc4 {[%eval 16,26] [%wdl 21,974,5]} (23. f5 $16 {[%eval 139,23] [%wdl 868,132,0]}) 23... Nxc4 $11 24. Bxc4 Bd7 {[%eval 115,23] [%wdl 688,312,0]} (24... Bb5 $1 $14 {[%eval 32,24] [%wdl 40,958,2]} 25. Be2 (25. Nxb5 axb5 26. Rxa8 Qxa8 $15) 25... Qb7) 25. Rf3 {[%eval 32,24] [%wdl 39,959,2]} (25. e5 $16 {[%eval 115,23] [%wdl 688,312,0]}) 25... Qb7 {[%eval 124,20] [%wdl 771,229,0]} (25... Bb5 $14 {[%eval 32,24] [%wdl 39,959,2]} 26. Be2 (26. Nxb5 axb5 27. Rxa8 Qxa8 $11) 26... Qb7) 26. Qe2 {[%eval 18,23] [%wdl 19,978,3]} ({Better is} 26. e5 $16 {[%eval 124,20] [%wdl 771,229,0]}) 26... a5 {[%eval 120,24] [%wdl 737,263,0]} (26... Bb5 $11 {[%eval 18,23] [%wdl 19,978,3]}) 27. b3 $36 {[%mdl 2048] Keeping Black busy.} Nh5 28. Na4 {[%CAl Oe4e5]} Ng3 $2 {[%eval 436,21] [%wdl 1000,0,0][%mdl 8192]} 29. Rxg3 $18 Kh7 30. Bd2 Rfb8 31. Qd3 Qc8 32. Bc3 f6 33. e5 Bf5 34. Qe2 Qc7 35. e6 h5 36. Bd3 {Intending Bxf5 and mate.} h4 {[#]} 37. Re3 {[%eval 425,27] [%wdl 1000,0,0]} (37. Rxg6 $142 $3 {[%eval 32750,38] [%wdl 1000,0,0][%mdl 512]} Rh8 (37... Bxd3 38. Qh5+) 38. Bxf5 Kg8 {[#]} 39. Rxg7+ $1 {[%mdl 512]} Kf8 40. Qg4 c4 41. Qg6 Qa7+ 42. Kh1 Qg1+ 43. Kxg1 cxb3 44. Qf7#) 37... Bxd3 38. Rxd3 c4 39. bxc4 Qxc4 40. Ra1 Rb5 41. Qf3 Rab8 42. Rd4 Qc7 43. Qg4 Kg8 {[%eval 693,23] [%wdl 1000,0,0]} (43... Rb1+ $142 {[%eval 421,27] [%wdl 1000,0,0]} 44. Rxb1 Rxb1+ 45. Kh2 Qd8 46. Qxh4+ Kg8) 44. Qxg6 Rb1+ 45. Rxb1 Rxb1+ 46. Kh2 {Threatening mate with f5.} Rc1 47. Qf7+ {White mates.} Kh8 48. f5 Qc4 49. Rxc4 Rh1+ 50. Kxh1 Bh6 51. Rc8+ {Weighted Error Value: White=0.45/Black=0.84} 1-0 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.9"] [White "Mauro, Machado De Carvalho"] [Black "Reryckson, Oliveira Gracie"] [Result "0-1"] [ECO "A48"] [WhiteElo "1621"] [BlackElo "1724"] [Annotator "Stockfish 16.1"] [PlyCount "101"] [EventDate "2024.06.10"] {[%evp 9,101,0,0,-3,18,7,25,-10,-7,-42,-34,-120,-12,-3,-1,-36,-32,-39,-48,-46,-48,-70,-71,-56,-70,-63,-70,-123,-64,-99,67,12,66,60,73,-11,28,15,60,60,83,65,259,31,91,46,71,57,53,52,58,16,15,15,26,0,0,-137,-143,-157,-139,-431,-429,-417,-415,-428,-414,-375,-292,-262,-237,-338,-194,-524,-424,-471,-463,-514,-429,-415,-379,-329,-202,-432,0,-375,3,-471,-440,-435,-339,-526,-520,-616]} 1. d4 g6 2. Bf4 Nf6 3. Nc3 Bg7 4. Nf3 d6 5. e3 O-O 6. Be2 $146 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} ({RR} 6. Bc4 c5 7. d5 Nbd7 8. O-O Ng4 9. h3 Nge5 10. Ne4 Nxc4 11. Qe2 Nce5 12. c3 Nxf3+ 13. Qxf3 Ne5 14. Qg3 Bf5 15. Nd2 b5 16. e4 Bd7 17. b3 f5 18. Qh4 e6 19. Qxd8 Raxd8 20. Rab1 exd5 {Gudmundsson,E (1536)-Doorn,W Reykjavik ISL 2024 0-1 (45)}) 6... Re8 ({Relevant:} 6... Nbd7 7. h3 c6 8. O-O Qc7 9. Bh2 Re8 10. a4 e5 11. a5 Rb8 12. Qd2 b5 13. axb6 $1 axb6 14. Rfd1 b5 15. dxe5 dxe5 16. Qd6 Qxd6 17. Rxd6 b4 18. Na4 Bb7 19. Rad1 Nf8 $2 {[%eval 301,21] [%wdl 1000,0,0]} (19... Re7 $16 {[%eval 114,27] [%wdl 660,340,0] keeps fighting.}) 20. Bc4 $2 {[%eval 95,25] [%wdl 464,536,0]} (20. Nc5 $18 {[%eval 301,21] [%wdl 1000,0,0]}) 20... Ne4 $16 21. R6d3 h5 22. b3 Ra8 {[%eval 151,25] [%wdl 919,81,0]} (22... c5 $142 {[%eval 89,26] [%wdl 398,602,0]}) 23. Nb6 {[%eval 3,29] [%wdl 12,980,8]} (23. Nd2 $16 {[%eval 151,25] [%wdl 919,81,0]} Nxd2 24. R3xd2) 23... Ra2 $11 24. Nd7 {[%CAl Rd7e5]} Nc3 25. Ndxe5 Nxd1 {[%eval 85,30] [%wdl 336,664,0]} (25... Bxe5 $11 {[%eval 4,31] [%wdl 10,983,7] keeps the balance.} 26. Nxe5 Nxd1 27. Rxd1 Ne6) 26. Bxf7+ $16 Kh7 {[%CAl Oa2a1]} 27. Bxe8 {[%eval 0,29] [%wdl 7,986,7]} ({White should play} 27. Rxd1 $16 {[%eval 87,28] [%wdl 351,649,0]} Re7 28. Ng5+ Kh6 29. Nef3) 27... Nb2 {( ? ...Ra1+)} 28. Rd8 $2 {[%eval -32761,25] [%wdl 0,0,1000][%mdl 8192]} (28. Bxg6+ $1 $14 {[%eval 44,27] [%wdl 60,939,1]} Nxg6 29. Ng5+ Kg8 30. Rd8+ Nf8 31. Bf4) 28... Ra1+ {0-1 (28) Caruana,F (2782)-Bortnyk,O (2607) Chess.com INT 2023}) 7. h3 b6 8. Qd2 {White has an edge.} Bb7 9. O-O-O Nbd7 {[#]} 10. Kb1 $146 {[%eval -120,22] [%wdl 0,307,693]} ({Predecessor:} 10. g4 $2 {[%eval -200,24] [%wdl 0,24,976] 10.h4 -0.39} e5 $2 {[%eval 0,27] [%wdl 26,948,26]} (10... c5 $19 {[%eval -200,24] [%wdl 0,24,976][%CAl Ob6b5] And now ...b5! would win.} 11. Rhg1 a6) 11. Bg5 $2 {[%eval -151,26] [%wdl 0,125,875]} ({White has to play} 11. dxe5 $11 {[%eval 0,27] [%wdl 26,948,26]} dxe5 12. Bh2) 11... exd4 12. exd4 {[%eval -220,25] [%wdl 0,10,990]} (12. Nxd4 $17 {[%eval -112,26] [%wdl 0,373,627]} Bxh1 13. Rxh1) 12... Qc8 {[%eval -71,27] [%wdl 1,739,260]} (12... b5 $19 {[%eval -220,25] [%wdl 0,10,990] and Black stays clearly on top.} 13. Nxb5 Ne4 14. Bxd8 Nxd2 15. Kxd2 Raxd8) 13. Rhe1 b5 14. Nxb5 Ne4 15. Qf4 {[%eval -230,25] [%wdl 0,5,995]} (15. Qa5 $17 {[%eval -128,27] [%wdl 0,234,766]} Nb6 16. Be3) 15... Nxf2 $2 {[%eval 1,24] [%wdl 19,964,17]} (15... Nb6 $19 {[%eval -230,25] [%wdl 0,5,995] aiming for ...h6.} 16. Bh4 h6) 16. Bc4 $11 Rf8 {Hoping for ...Nb6.} 17. Be7 Nxd1 18. Bxf8 Qxf8 19. Nxc7 {[%eval -52,34] [%wdl 1,881,118]} (19. Kxd1 $11 {[%eval 0,31] [%wdl 14,972,14]} Nb6 20. Bb3) 19... Rc8 {[%eval 18,28] [%wdl 28,966,6]} (19... Bxf3 $15 {[%eval -52,34] [%wdl 1,881,118]} 20. Nxa8 Bxa8 21. Rxd1 Nb6) 20. Ng5 $11 {[%CAl Rc4f7]} d5 21. Nxd5 Bxd5 22. Bxd5 Nxb2 $1 23. Qxf7+ Qxf7 24. Bxf7+ Kf8 25. Kxb2 Bxd4+ 26. Kc1 {[%CAl Of7g6]} Bf6 27. Be6 $2 {[%eval -426,27] [%wdl 0,0,1000][%mdl 8192]} (27. Ne4 $14 {[%eval 33,28] [%wdl 37,962,1] was the only good move.}) 27... Bxg5+ $19 28. Kb2 Rb8+ 29. Kc3 Nc5 30. Bc4 Na4+ 31. Kd4 Rd8+ 32. Bd5 Nc3 33. Rf1+ Kg7 34. Rf7+ Kh8 35. Kxc3 {Threatens to win with Kd4.} Rxd5 36. Rxa7 h5 {[%eval 0,31] [%wdl 3,994,3]} (36... Be3 $17 {[%eval -125,32] [%wdl 0,197,803]} 37. Kc4 Rc5+ 38. Kb3 Rb5+ 39. Kc4 Rc5+ 40. Kb3 Bd2) 37. gxh5 $2 {[%eval -180,27] [%wdl 0,11,989] [#]} (37. Kc4 $11 {[%eval 0,31] [%wdl 3,994,3]} Rd2 38. gxh5) 37... Bf6+ $2 {[%eval 0,34] [%wdl 3,994,3]} (37... Bd2+ $1 $19 {[%eval -180,27] [%wdl 0,11,989]} 38. Kc4 Rxh5) 38. Kb3 $2 {[%eval -235,25] [%wdl 0,0,1000]} (38. Kb4 $1 $11 {[%eval 0,34] [%wdl 3,994,3]}) 38... Rxh5 $19 39. a4 Rxh3+ {Adewumi,T (1844)-Tsvetkov,A (2412) Chess.com INT 2021 0-1}) (10. h4 $15 {[%eval -34,23] [%wdl 8,901,91]}) ({Predecessor:} 10. g4 e5 11. Bg5 exd4 12. exd4 Qc8 13. Rhe1 b5 14. Nxb5 Ne4 15. Qf4 Nxf2 16. Bc4 {0-1 (51) Adewumi,T (1844)-Tsvetkov,A (2412) Chess.com INT 2021}) 10... Ne4 {[%eval -12,25] [%wdl 17,942,41]} (10... c5 $17 {[%eval -120,22] [%wdl 0,307,693]}) 11. Nxe4 $11 Bxe4 12. Rhe1 (12. h4 $5 {[%CAl Rh4h5]}) 12... Nf6 13. Bb5 c6 14. Bd3 b5 15. Bxe4 Nxe4 16. Qe2 Qb6 17. Nd2 Nf6 18. g4 {[%eval -123,20] [%wdl 0,255,745]} (18. Bg5 $15 {[%eval -70,26] [%wdl 1,765,234]}) 18... Nd5 {[%eval -64,24] [%wdl 1,815,184]} (18... a5 $17 {[%eval -123,20] [%wdl 0,255,745]}) 19. Bh2 Qa6 $2 {[%eval 67,23] [%wdl 200,799,1]} ({Better is} 19... a5 $17 {[%eval -99,22] [%wdl 0,489,511]}) 20. c3 {[%eval 12,25] [%wdl 22,971,7]} (20. e4 $1 $14 {[%eval 67,23] [%wdl 200,799,1]} Nc7 21. e5) 20... Qc8 {[%eval 66,24] [%wdl 188,811,1]} (20... c5 $11 {[%eval 12,25] [%wdl 22,971,7]}) 21. e4 $14 Nb6 {[%CAl Ob5b4]} 22. f4 {[%eval -11,25] [%wdl 6,976,18]} (22. e5 $16 {[%eval 73,26] [%wdl 239,761,0]}) 22... a5 (22... b4 $5) 23. e5 dxe5 24. fxe5 Qe6 25. Nb3 {[%CAl Od4d5]} Nd7 $2 {[%eval 259,22] [%wdl 1000,0,0] [#]} (25... Rf8 $14 {[%eval 65,27] [%wdl 166,834,0]}) 26. Bg1 $2 {[%eval 31,28] [%wdl 35,963,2]} (26. d5 $1 $18 {[%eval 259,22] [%wdl 1000,0,0][%CAl Rd5e6]} cxd5 27. Nd4) 26... g5 {[%eval 91,26] [%wdl 407,593,0]} (26... b4 $14 {[%eval 31,28] [%wdl 35,963,2]}) 27. Qd2 Qg6+ 28. Qd3 Qxd3+ 29. Rxd3 a4 30. Nc5 Nxc5 31. dxc5 Rad8 32. Bd4 e6 33. a3 {[%eval -137,24] [%wdl 0,119,881]} (33. b4 $11 {[%eval 0,36] [%wdl 5,991,4]}) 33... Rd5 $17 34. Kc2 Red8 35. Rf1 $2 {[%eval -431,27] [%wdl 0,0,1000][%mdl 8192]} (35. Re2 $17 {[%eval -139,24] [%wdl 0,101,899]}) 35... Bxe5 $19 36. Rfd1 {Bxe5 is the strong threat.} Bxd4 37. Rxd4 Rxd4 38. cxd4 {[%mdl 4096] Endgame KR-KR} f6 {[%CAl Bf7f6,Bf6f5,Bf5f4,Bf4f3][%mdl 32]} 39. Kc3 Kf7 40. Re1 {[%eval -338,22] [%wdl 0,0,1000]} (40. Kb4 $142 {[%eval -237,26] [%wdl 0,0,1000]}) 40... Rd5 {[%eval -194,24] [%wdl 0,4,996]} (40... f5 $142 {[%eval -338,22] [%wdl 0,0,1000] Strongly threatening ...Rd5.} 41. Re2 h5) 41. Kd3 $2 {[%eval -524,23] [%wdl 0,0,1000]} (41. Kb4 {[%eval -194,24] [%wdl 0,4,996] was the crucial defense.}) 41... f5 42. Kc3 Kf6 43. Kb4 f4 44. Ka5 Ke7 45. Kb6 Kd7 46. h4 $2 {[%eval -432,23] [%wdl 0,0,1000]} (46. Re4 {[%eval -202,23] [%wdl 0,2,998]}) 46... e5 $2 {[%eval 0,25] [%wdl 2,996,2]} ({Black should try} 46... Rxd4 $19 {[%eval -432,23] [%wdl 0,0,1000]} 47. hxg5 f3) 47. hxg5 $2 {[%eval -375,22] [%wdl 0,0,1000][%mdl 8192]} (47. dxe5 $11 {[%eval 0,25] [%wdl 2,996,2] and White stays safe.} gxh4 48. e6+ Ke7 49. Kxc6) 47... Rxd4 $2 {[%eval 3,31] [%wdl 2,996,2]} (47... exd4 $19 {[%eval -375,22] [%wdl 0,0,1000]} 48. Rh1 d3 49. Rxh7+ Ke6 50. Rh6+ Ke5) 48. Rh1 $2 {[%eval -471,23] [%wdl 0,0,1000][%mdl 8192]} (48. Rxe5 $11 {[%eval 3,31] [%wdl 2,996,2] and White has nothing to worry.} b4 49. Rf5) 48... f3 49. Rxh7+ Ke6 50. g6 {[%eval -526,20] [%wdl 0,0,1000]} (50. Rh6+ $142 {[%eval -339,19] [%wdl 0,0,1000]} Ke7 51. Rh7+ (51. Rf6 $2 Rf4 $19) 51... Kf8 52. Kxc6) 50... Rxg4 51. g7 {Weighted Error Value: White=0.88/Black=0.66} 0-1 [Event "Memorial Silvio Mendes"] [Site "Club Municipal Rua Haddock Lo"] [Date "2024.07.15"] [Round "6.10"] [White "Zahir, Goncalves Firmo"] [Black "Pedro, Oliveira Da Silva"] [Result "1/2-1/2"] [ECO "D06"] [WhiteElo "1280"] [BlackElo "1489"] [Annotator "Stockfish 16.1"] [PlyCount "58"] [EventDate "2024.06.10"] {[%evp 12,58,96,92,131,126,169,-78,101,29,22,28,26,3,26,-1,6,8,8,-207,365,364,364,361,448,455,539,428,584,583,578,0,0,-357,-357,-367,-349,-328,95,98,83,0,1,5,1,0,273,2,16]} 1. d4 d5 2. c4 e6 3. cxd5 Qxd5 4. Nc3 Qd8 5. e4 Nf6 6. Bg5 Be7 7. Nf3 Nc6 $146 {D06: Queen's Gambit: Symmetrical and Baltic Defences.} ({Relevant:} 7... h6 8. Bf4 Bb4 {[%eval 167,21] [%wdl 922,78,0]} (8... O-O $16 {[%eval 93,23] [%wdl 458,541,1]}) 9. Qc2 {[%eval 115,22] [%wdl 646,353,1]} (9. Bd3 $1 $18 {[%eval 167,21] [%wdl 922,78,0]}) 9... Bxc3+ 10. bxc3 Nc6 11. Bd3 Bd7 12. O-O Qc8 {[%eval 266,24] [%wdl 998,2,0]} (12... O-O {[%eval 199,23] [%wdl 978,22,0] was called for.} 13. Bd2 b6) 13. Rab1 b6 14. Rfe1 O-O 15. Bg3 {[%eval 167,25] [%wdl 941,59,0]} (15. Qd2 $142 {[%eval 335,21] [%wdl 1000,0,0]}) 15... g6 $2 {[%eval 345,24] [%wdl 1000,0,0]} (15... Nh5 {[%eval 167,25] [%wdl 941,59,0] keeps fighting.} 16. Bh4 Nf4) 16. e5 $18 Nd5 17. Bxg6 fxg6 {[%eval 32756,29] [%wdl 1000,0,0]} (17... b5 $18 {[%eval 472,24] [%wdl 1000,0,0]} 18. Bd3 Nce7) 18. Qxg6+ Kh8 19. Qxh6+ Kg8 20. Qg6+ Kh8 21. Ng5 {[%csl Gg5][%CAl Rg6h7]} Rf7 22. Nxf7# {1-0 (22) Peglau,C (1918)-Kalyncukova,K (1625) Usti nad Labem 2024}) ({RR} 7... a6 8. Bc4 Nbd7 9. e5 Nd5 10. Bxe7 Qxe7 11. Bd3 Nf4 12. O-O Nxd3 13. Qxd3 c6 14. Ne4 O-O 15. Rfe1 f5 16. Nd6 Nb6 17. Qd2 Rb8 18. Qa5 Ra8 19. b4 Nd5 20. Qc5 Qc7 21. a3 Nf4 22. Qc2 {Bogantes Robleto,K (1796)-Mendoza Novo,G (1865) Havana CUB 2024 ½-½}) 8. Bb5 Bd7 {[#]} 9. Ne5 $146 {[%eval -78,24] [%wdl 2,661,337]} ({Predecessor:} 9. O-O a6 10. Ba4 b5 11. Bb3 {[%eval 85,25] [%wdl 384,615,1]} (11. Bc2 $18 {[%eval 181,23] [%wdl 956,44,0] is more deadly.}) 11... O-O {[%eval 139,27] [%wdl 826,174,0]} (11... b4 $142 {[%eval 85,25] [%wdl 384,615,1]}) 12. a3 {[%eval 70,25] [%wdl 260,738,2]} (12. Bc2 $16 {[%eval 139,27] [%wdl 826,174,0]}) 12... Be8 {[%eval 136,24] [%wdl 811,189,0]} (12... b4 $1 $14 {[%eval 70,25] [%wdl 260,738,2]} 13. axb4 Nxb4) 13. Re1 Na7 {[%eval 259,25] [%wdl 998,2,0]} (13... b4 $16 {[%eval 110,22] [%wdl 611,389,0]}) 14. Qe2 c6 {[%eval 306,20] [%wdl 1000,0,0]} (14... Nd7 $142 {[%eval 217,22] [%wdl 991,9,0]}) 15. d5 $18 cxd5 16. exd5 Rb8 {[%CAl Rf6d5]} 17. dxe6 fxe6 18. Qxe6+ Bf7 19. Qxe7 Qxe7 20. Rxe7 Bxb3 21. Rxa7 Rb6 22. Re1 Rd6 23. h3 Nd7 24. Be7 Rg6 25. Bxf8 Nxf8 26. Ree7 h6 27. Nd4 Bc4 28. Nf5 Bd3 29. Rxg7+ Rxg7 30. Nxg7 Ng6 31. Ne6 {Threatening mate with Nd5.} Kh8 32. Ra8+ Kh7 33. Nd5 {[%eval 770,34] [%wdl 1000,0,0]} (33. Ra7+ $142 {[%eval 32750,36] [%wdl 1000,0,0]} Ne7 34. Rxe7+ Kg6 35. Nd5 h5 36. Nf8+ Kg5 37. f4+ Kh6 38. Nf6 h4 39. Ng8+ Kh5 40. Re5+ Bf5 41. Rxf5#) 33... h5 $18 34. Nf6+ Kh6 35. Ra7 {[%CAl Rf6g8]} Nh4 36. Rg7 {[%CAl Rf6g8]} Bf5 37. Ng8# {1-0 (37) Marochkina,N (1687)-Gamba,M Chennai 2022}) (9. a3 $18 {[%eval 169,25] [%wdl 926,74,0]}) ({Predecessor:} 9. O-O a6 10. Ba4 b5 11. Bb3 O-O 12. a3 Be8 13. Re1 Na7 14. Qe2 c6 15. d5 cxd5 16. exd5 {1-0 (37) Marochkina,N (1687)-Gamba,M Chennai 2022}) 9... Rb8 $2 {[%eval 101,25] [%wdl 531,468,1]} (9... Nxe5 $17 {[%eval -78,24] [%wdl 2,661,337] keeps the pressure on.} 10. dxe5 Bxb5 11. Qxd8+ Bxd8 12. exf6 gxf6) 10. Bxf6 {[%eval 29,26] [%wdl 78,912,10]} (10. Nf3 $16 {[%eval 101,25] [%wdl 531,468,1]}) 10... Bxf6 $11 11. Nxd7 Qxd7 12. d5 (12. e5 $5 {[%CAl Re5f6]} Bd8 13. Qg4 $14) 12... exd5 13. exd5 {[%CAl Be4d5,Bd5c6][%mdl 32]} Bxc3+ 14. bxc3 Qe7+ 15. Kd2 $2 {[%eval -207,25] [%wdl 0,12,988] [#]} (15. Kf1 $11 {[%eval 8,27] [%wdl 27,959,14]} a6 16. Ba4) 15... Qc5 $4 {[%eval 365,27] [%wdl 1000,0,0][%mdl 8192]} (15... Qg5+ 16. Kc2 O-O 17. Qf3 $15) (15... O-O $1 $19 {[%eval -207,25] [%wdl 0,12,988] and life is good for Black. Threatens to win with ...Qc5.} 16. Bd3 Ne5) 16. Qe2+ $18 Kf8 17. dxc6 Rd8+ 18. Kc2 a6 19. Bc4 b5 20. Rad1 {[%CAl Rd1d8]} Re8 {[#]} 21. Qf3 {[%eval 0,33] [%wdl 11,978,11]} (21. Qxe8+ $1 $18 {[%eval 578,28] [%wdl 1000,0,0][%mdl 512]} Kxe8 22. Rhe1+ Qe7 23. Rxe7+ Kxe7 24. Rd7+ Kf6 25. Rxf7+ Ke5 26. Be2) 21... Qxc4 $11 22. Rd7 $2 {[%eval -357,26] [%wdl 0,0,1000][%mdl 8192]} (22. Rhe1 $11 {[%eval 0,33] [%wdl 11,978,11] and White is okay.} Qxa2+ 23. Kc1 Rxe1 24. Rxe1) 22... Qxa2+ $19 23. Kd3 {[%CAl Oh1a1]} Qc4+ ({Not} 23... Qe6 24. Ra1 $17) 24. Kc2 Qe2+ {[%eval 95,28] [%wdl 452,548,0]} ({Better is} 24... Qa2+ $19 {[%eval -328,27] [%wdl 0,0,1000]} 25. Kd3 h5) 25. Qxe2 $16 Rxe2+ {[#]} 26. Kd3 {[%eval 1,31] [%wdl 8,986,6]} (26. Kb3 $1 $16 {[%eval 83,25] [%wdl 321,679,0]}) 26... Re7 $11 {aiming for ...Rxd7+.} 27. Rd8+ Re8 28. Rd7 Re6 $2 {[%eval 273,28] [%wdl 1000,0,0][%mdl 8192]} (28... Re7 $11 {[%eval 0,31] [%wdl 7,987,6]}) 29. Rd8+ $2 {[%eval 2,27] [%wdl 7,988,5]} ({Only move:} 29. Rxc7 $18 {[%eval 273,28] [%wdl 1000,0,0]} g6 30. Kd4) 29... Re8 {Weighted Error Value: White=1.02/Black=1.26} 1/2-1/2