[Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "1.1"] [White "Jones, Stephen"] [Black "Aoki, Yasuhiro"] [Result "1-0"] [ECO "E68"] [WhiteElo "2285"] [BlackElo "1702"] [Annotator "Tactical Analysis 6.1"] [PlyCount "81"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 18,81,74,81,83,85,106,92,112,53,148,149,172,153,153,144,160,71,98,95,100,77,260,253,253,256,233,143,358,357,475,483,466,474,472,475,473,460,443,219,195,158,156,109,103,106,114,40,21,21,288,266,352,342,378,357,404,182,596,577,547,400,406,392,431,391]} 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 c6 7. Nc3 Nbd7 8. Qc2 e5 9. Rd1 Qc7 10. e4 {White is more active.} exd4 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4.} 11. Nxd4 Ne5 {[%tqu "En","","","","b2b3","",10]} 12. b3 $1 Re8 {White is better.} 13. Ba3 $146 (13. h3 $16) ({Predecessor:} 13. h3 Qe7 14. Be3 Nh5 15. Qe2 Bf6 16. Rd2 Ng7 17. Rad1 Rd8 18. f4 Nd7 19. Qf2 Ne8 20. Nde2 {1-0 Borges Matos,J (2482)-Llavador Moron,J (2202) La Roda op 34th 2007 (5)}) {[%tqu "En","","","","a7a6","",10]} 13... Rd8 ({Black should play} 13... a6 $1 $14) 14. h3 $16 c5 15. Nde2 a6 16. Bb2 Rb8 17. Nf4 (17. g4 $142) 17... Be6 18. a4 Nc6 19. Nce2 b5 $2 (19... Qe7 $16) 20. axb5 $18 axb5 21. Nxe6 fxe6 22. Nf4 Qc8 (22... Qf7 $16) 23. cxb5 Rxb5 24. Qc4 {[%csl LRb5,LRe6]} Rb4 25. Qxe6+ Qxe6 26. Nxe6 Rd7 27. Nxg7 Kxg7 28. Ra6 (28. e5 $142 Nxe5 29. Bxe5 (29. f4 Rxb3 30. fxe5 Rxb2 $18) 29... dxe5 30. Rxd7+ Nxd7 31. Ra7) 28... Nd4 29. Bxd4 cxd4 30. Ra4 {Inhibits d5.} (30. Rd3 $142) 30... Rxb3 $16 31. Raxd4 {[#] Threatens to win with e5.} Ne8 32. e5 (32. R1d2 $16) {[%tqu "En","","","","b3b6","",10]} 32... Rb6 $1 $14 33. h4 {aiming for Bh3.} {[%tqu "En","","","","d7e7","",10]} Rd8 $2 {[%mdl 8192]} (33... Re7 $1 $11 {and Black is okay.}) 34. Bh3 Kf7 35. Ra1 {[#] Strongly threatening Rf4+.} Rb7 36. Ra6 Ke7 37. Rf4 (37. Kg2 $142) 37... Nc7 $2 (37... Rdb8 38. Rf3 Rb6 39. exd6+ Nxd6 40. Ra7+ R8b7) 38. exd6+ $18 Rxd6 39. Rxd6 Kxd6 40. Rf7 h5 41. Rf6+ {Weighted Error Value: White=0.37/Black=0.70. Loses game: --- Black=3 Missed win: --- --- Mistake: White=6 Black=2 Inaccurate: White=1 Black=3 OK: White=11 Black=6 Best: --- Black=2 Strong: White=1 Black=1 Brilliant: --- ---} 1-0 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "1.2"] [White "Sawamura, Tetsushi"] [Black "Higashishiba, Teruomi"] [Result "1/2-1/2"] [ECO "D05"] [WhiteElo "1615"] [BlackElo "1951"] [Annotator "Tactical Analysis 6.1"] [PlyCount "238"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 13,238,0,0,0,0,-5,-3,0,-4,-5,13,13,11,7,7,-5,4,-6,-7,-2,-3,-17,-4,-2,-4,-6,-6,-6,0,0,0,0,0,0,0,0,0,0,0,0,3,3,2,1,4,5,8,9,12,1,14,3,11,0,0,0,0,-15,0,-19,0,-5,-4,-17,-4,-4,-4,-4,-4,-4,-4,-5,-4,-4,-4,-4,-4,-5,-4,-4,-4,-4,-4,-5,-4,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 b6 3. e3 Bb7 4. Bd3 e6 5. Nbd2 c5 6. c3 Be7 7. O-O d5 {The position is equal.} 8. Re1 {D05: Colle System with ...e6.} O-O 9. e4 cxd4 10. Nxd4 {Black must now prevent e5.} dxe4 11. Nxe4 Nc6 12. Nxf6+ Bxf6 13. Nxc6 ({Much weaker is} 13. Qh5 g6 14. Qf3 Bxd4 15. cxd4 Qxd4 $15) 13... Bxc6 14. Bc2 $146 ({Predecessor:} 14. Qc2 g6 15. Bf4 Qc8 16. Qe2 Bb7 17. Rad1 Qc6 18. Be4 Qxe4 19. Qxe4 Bxe4 20. Rxe4 {½-½ Hokamp,S (2039)-Horstmann,M (1703) Steinfurt Bezirksliga 1011 Germany 2010 (8.1)}) 14... Qc7 (14... Qxd1 {simplifies} 15. Rxd1 a5 16. a4 Be7) 15. Qh5 {[%csl Gc2][%CAl Rh5h7] [#]} (15. Qg4 {simplifies} g6 16. Qf4 Qxf4 17. Bxf4 g5 18. Be3) 15... g6 16. Qe2 Rfd8 17. Be3 Rd7 18. Rad1 Rad8 19. Rxd7 Rxd7 20. Rd1 Qd8 21. Rxd7 Qxd7 22. Qd2 Qxd2 23. Bxd2 $11 {[%mdl 4096] Endgame KBB-KBB} Kf8 24. Be3 h5 25. a4 Ke8 26. a5 Bd8 27. axb6 axb6 28. Bd3 Kd7 29. b4 Bc7 30. c4 Kc8 31. g3 Kb7 32. Bf1 Bd6 33. c5 bxc5 34. bxc5 Be5 35. Bg2 Bc3 36. h3 Bb4 37. g4 hxg4 38. hxg4 (38. Bxc6+ {simplifies} Kxc6 39. hxg4 Bxc5 40. Bg5) 38... Bxg2 39. Kxg2 {KB-KB} Kc6 40. f3 Bxc5 41. Bc1 Kd5 42. Kf1 Kd4 {[#] Threatens to win with ...Kd3.} 43. Ke2 Kc3 44. Bd2+ Kc2 45. Bf4 Bd4 46. Bc7 Kc3 47. Ba5+ Kc4 48. Bc7 Kd5 49. Bg3 g5 50. Bc7 Be5 51. Bd8 Bf4 52. Bf6 Kc4 53. Be7 e5 54. Bf6 Kd4 55. Bg7 Kd5 56. Kd3 Bc1 57. Bf6 Ke6 {[%tqu "En","","","","f6d8","",10]} 58. Bd8 f5 59. Bb6 fxg4 60. fxg4 Kd5 61. Bd8 Bf4 62. Ba5 e4+ 63. Ke2 Kd4 64. Bb6+ Kc4 65. Bd8 Bc1 66. Bf6 Kd5 67. Bc3 Ke6 68. Bd4 Bf4 69. Bc3 Be5 70. Bd2 Kf6 71. Ba5 Ke6 72. Bd2 Bf4 73. Bc3 Kd5 74. Bf6 Bc1 75. Kd1 Ke6 76. Bd8 Bf4 77. Ke2 Kf7 78. Ba5 Ke7 79. Bb4+ Bd6 80. Bd2 Kf6 81. Bc3+ Be5 82. Bb4 Bd4 83. Bd6 Ke6 84. Bc7 Bf6 85. Ke3 Kd5 86. Bb6 Be7 87. Bc7 Bc5+ 88. Ke2 Bd6 89. Bd8 Bf4 90. Bf6 Kc4 91. Bb2 Kd5 92. Bf6 Ke6 93. Bc3 Bd6 94. Bd2 Kf6 95. Bc3+ Be5 96. Bb4 Ke6 97. Bd2 Bf4 98. Bc3 e3 99. Bb4 Kd5 100. Be1 Ke4 101. Bb4 Be5 102. Ba5 Bd4 {Strongly threatening ...Kf4.} (102... Kf4 $5 103. Bb6 $8 Kxg4 104. Bxe3 Bh8 $11) {[%tqu "En","","","","a5c7","",10]} 103. Bc7 $1 Bc5 104. Bh2 Kd5 105. Bg1 Bd4 (105... Ke4 $5 106. Bh2 $8 Be7 $11) 106. Bh2 Ke4 107. Bc7 Bc5 108. Bh2 Kd5 109. Bg1 Bd4 110. Bxe3 Bxe3 111. Kxe3 {KP-KP} Ke5 112. Kf3 Kd4 113. Ke2 Ke4 114. Kf2 Kf4 115. Kg1 Kxg4 116. Kg2 Kf4 {( -> ...Kg4)} 117. Kf2 g4 {[%CAl Bg5g4,Bg4g3][%mdl 32]} (117... Kg4 $5 118. Kg2 $8 Kh5 $11) 118. Kg2 g3 119. Kg1 Kf3 {An interesting draw. Weighted Error Value: White=0.03 (flawless) /Black=0.03 (flawless) . Loses game: --- --- Missed win: --- --- Mistake: --- --- Inaccurate: --- --- OK: White=57 Black=26 Best: White=4 Black=1 Strong: White=1 --- Brilliant: --- ---} (119... Ke3 $5) 1/2-1/2 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "2.1"] [White "Fukuda, Toyoaki"] [Black "Jones, Stephen"] [Result "0-1"] [ECO "B10"] [WhiteElo "1721"] [BlackElo "2285"] [Annotator "Tactical Analysis 6.1"] [PlyCount "80"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 13,80,42,42,36,38,22,24,19,79,86,87,87,108,103,166,158,221,87,120,121,151,116,129,21,56,10,28,-21,-6,-166,-163,-162,-139,-131,-136,-127,-119,-271,-12,-21,-4,-5,-2,-20,0,-26,-15,-87,-93,-172,-156,-302,-254,-457,-417,-416,-417,-588,-588,-583,-579,-548,-498,-519,-513,-539,-517,-555,-538]} 1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Bb5+ Bd7 6. Bc4 b5 7. Bb3 a5 8. a3 {B10: Caro-Kann: 2 d3 and 2 c4.} Na6 9. d4 Nc7 10. Nf3 {White has an edge.} Bg4 (10... a4 $11 11. Bc2 Ncxd5) 11. h3 $146 ({Predecessor:} 11. d6 Qxd6 12. Be3 e6 13. h3 Bh5 14. Nbd2 Be7 15. O-O O-O 16. Rc1 Rac8 17. Bc2 {0-1 Chekmareva,L-Poleschikov,A (1915) Saratov RSOCF Cup 2010 (2)}) 11... Bxf3 12. Qxf3 {[#] aiming for Nc3.} Ncxd5 13. Nc3 Nxc3 (13... e6 $16) 14. bxc3 Rc8 (14... e6 $16) 15. Bg5 (15. Qd3 $18) 15... e6 {[%tqu "En","","","","g5f6","",10]} 16. Bxf6 $1 gxf6 17. O-O {And now a4 would win.} Bd6 18. Qh5 (18. d5 $16) 18... O-O 19. Rfc1 (19. Bc2 f5 20. Bd3 Rxc3 21. Bxb5 Qf6 $15) (19. d5 $14 {might be stronger.}) 19... f5 20. Rc2 (20. d5 $142) 20... Kh8 {Black wants to play ...a4.} (20... a4 $5 21. Ba2 $8 Bxa3 $15) 21. Re1 $2 {[#]} (21. a4 $11) 21... a4 $19 (21... Bxa3 22. Qe2 $17) 22. Ba2 Bxa3 {Threatens to win with ...b4.} 23. Qe2 b4 24. cxb4 Qxd4 {Strongly threatening ...Rxc2.} 25. Rd1 $2 (25. b5 $17 {was worth a try.}) 25... Qf6 $2 ({And not} 25... Qxb4 26. Rxc8 Rxc8 {[%tqu "En","","","","a2e6","",10]} 27. Bxe6 $1 $11) ({Black should try} 25... Rxc2 $19 26. Qxc2 Qxb4) 26. b5 Rxc2 27. Qxc2 Qb2 28. Qc4 ({Of course not} 28. Qxb2+ Bxb2 29. Rd7 Kg8 $17) 28... Qb4 29. Qc6 (29. Qc7 $5 {[%CAl Rb5b6]}) 29... Qc5 (29... Bb2 {is interesting.} 30. b6 Be5 31. b7 Rb8) 30. Qf3 (30. g3 $11) 30... Bb2 $17 31. Qe2 (31. Qc6 $17 Qxc6 32. bxc6) 31... a3 32. Rb1 (32. g3 $17) 32... Rb8 $19 33. Rxb2 $2 (33. Qh5 Qe7 34. Qe2) 33... axb2 34. Qxb2+ {[%mdl 4096] Endgame KQR-KQB} Kg8 35. Qf6 (35. Qd2 $142) 35... Qc1+ {Black is clearly winning.} ({Stronger than} 35... Rxb5 36. Qg5+ Kh8 37. Qf6+ Kg8 38. Qg5+ Kh8 39. Qf6+ Kg8 $11) 36. Kh2 Qf4+ 37. Kg1 Rxb5 38. Qd8+ Kg7 {...Rb2 is the strong threat.} 39. Qd3 Rc5 40. g3 Rc1+ {Black used his chance. Weighted Error Value: White=0.58/Black=0.28 (precise) . Loses game: --- --- Missed win: --- Black=1 Mistake: White=11 Black=3 Inaccurate: White=1 Black=2 OK: White=5 Black=9 Best: --- Black=3 Strong: White=1 --- Brilliant: --- ---} 0-1 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "2.2"] [White "Kanda, Daigo"] [Black "Manabe, Hiroshi"] [Result "0-1"] [ECO "C02"] [WhiteElo "1782"] [BlackElo "2006"] [Annotator "Tactical Analysis 6.1"] [PlyCount "36"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 14,36,54,47,60,26,30,0,0,4,4,-11,6,-32,-31,-65,-30,-61,-57,-109,-60,-108,-106,-402,-352]} 1. d4 e6 2. e4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Be2 cxd4 7. cxd4 Bb5 8. Nc3 Bxe2 {C02: French: Advance Variation.} 9. Qxe2 Nc6 10. Be3 Nge7 {The position is equal.} 11. O-O {[%CAl Ob2b4]} Nf5 {Against b4} 12. Rfd1 Nxe3 13. Qxe3 $146 (13. fxe3 $11 {deserves consideration.} Bb4 14. Qd3) ({Predecessor:} 13. fxe3 Be7 14. b3 O-O 15. Na4 Qa5 16. Rac1 Rac8 17. h3 Nb4 18. Nc3 Rc6 19. Na4 {½-½ Cubelic,M (2085)-Abramovic,D (2109) CRO-chT2 Ost Croatia 2015 (6.14)}) 13... Be7 $15 {[%CAl Bf8e7,Be7a3,Ba3c1][%mdl 32]} 14. Na4 Qa6 (14... Qb5 $5 {[%CAl Rb5a4]} 15. Nc3 Qa6 $11) 15. b3 O-O 16. Rdc1 ({Better is} 16. Nc5 $15 Bxc5 17. dxc5) 16... Rac8 (16... Ba3 $17 17. Rc3 Rac8) 17. Ne1 (17. a3 $15 {should be considered.}) 17... Ba3 $17 18. Nc5 $2 {[%mdl 8192] [#]} (18. Rd1 $17) 18... Bxc1 {White got outplayed after the opening. Weighted Error Value: White=0.80/Black=0.11 (very precise) . Loses game: White=1 --- Missed win: --- --- Mistake: White=3 Black=1 Inaccurate: White=4 Black=1 OK: --- Black=7 Best: --- --- Strong: --- --- Brilliant: --- ---} 0-1 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "3.1"] [White "Jones, Stephen"] [Black "Manabe, Hiroshi"] [Result "1-0"] [ECO "E05"] [WhiteElo "2285"] [BlackElo "2006"] [Annotator "Tactical Analysis 6.1"] [PlyCount "67"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 16,67,24,0,54,26,44,-16,-7,-14,-8,-14,30,23,121,67,58,56,62,35,149,146,318,322,432,432,489,442,483,472,571,579,612,626,642,591,628,578,587,577,598,580,588,574,626,622,629,622,615,612,650,636,1130,1186]} 1. Nf3 e6 2. c4 Nf6 3. g3 d5 4. d4 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Nbd2 {[%tqu "En","","","","d7c6","",10]} Nc6 {E05: Open Catalan: 5 Nf3 Be7.} ({Black should play} 9... Bc6 $1 $11) 10. Nxc4 $14 Nb4 11. Qb1 (11. Qb3 $14) 11... Bc6 $11 {[#] White must now prevent ...Be4. The position is equal.} 12. Ncd2 $146 {Against Be4} ({Predecessor:} 12. Be3 Be4 13. Qd1 Nfd5 14. Rc1 Nxe3 15. Nxe3 Rc8 16. Qb3 Qd6 17. Rfd1 Rfd8 18. Ne5 Bxg2 19. Kxg2 {0-1 Rumiancev,B (2232)-Kalvaitis,S (2267) Plunge op 2007 (7)}) 12... b5 13. b3 Nfd5 (13... bxa4 $142 14. bxa4 Qe8) 14. Bb2 Bf6 (14... bxa4 $11 {remains equal.} 15. bxa4 Nb6) 15. a5 (15. Rc1 $16) {[%tqu "En","","","","f6e7","",10]} 15... Be7 $1 $14 16. Ne5 {[%tqu "En","","","","c6b7","",10]} Bb7 $1 17. Rc1 {Prevents c5.} Rc8 (17... f5 $14) {[%tqu "En","","","","d2e4","",10]} 18. Ne4 $1 $16 {White has more active pieces. The black rooks are badly placed.} c6 $2 {[#] This move loses the game for Black.} (18... f6 $16) 19. Nc5 $18 Ba8 20. e4 {White is clearly winning.} Bg5 21. Rd1 ({Less strong is} 21. exd5 Bxc1 22. Qxc1 cxd5 $18) ({Not} 21. f4 Nxf4 22. gxf4 Bxf4 $18) 21... h5 22. exd5 Nxd5 23. Qe4 f5 24. Qe2 Qe8 25. Re1 f4 26. Nf3 fxg3 27. hxg3 Bf6 28. Bh3 Nc7 29. Nxe6 Qg6 30. Nxf8 Rxf8 31. Ne5 Bxe5 32. Qxe5 c5 33. dxc5 h4 34. Qxc7 {Weighted Error Value: White=0.17 (very precise) /Black=0.47. Loses game: --- Black=1 Missed win: --- --- Mistake: White=2 Black=3 Inaccurate: White=1 Black=1 OK: White=8 Black=4 Best: White=2 Black=2 Strong: White=1 Black=2 Brilliant: --- ---} 1-0 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "3.2"] [White "Koyama, Nobuyuki"] [Black "Ogasa, Seiichi"] [Result "1-0"] [ECO "B43"] [WhiteElo "1664"] [BlackElo "1666"] [Annotator "Tactical Analysis 6.1"] [PlyCount "71"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 12,71,12,-14,47,7,9,-37,-31,-53,-52,-48,64,32,35,-18,104,93,230,100,110,-26,130,142,146,155,181,180,167,166,182,79,96,71,136,126,134,106,520,528,572,572,655,596,604,614,613,612,612,580,611,604,619,596,29989,29990,29989,29990,29990,29991,29991,29992]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Qc7 7. Be2 Be7 {B43: Sicilian: Kan Variation: 5 Nc3.} ({Black should try} 7... Bb4 $11) 8. Qd2 (8. O-O $14) 8... b5 $11 9. a3 (9. Bf3 $11 {should be considered.} b4 10. Nce2) 9... Bb7 $15 {Black is slightly better.} 10. f3 O-O 11. g4 d6 (11... Nc6 $15) 12. h4 Nc6 13. h5 (13. O-O-O $14) {[%tqu "En","","","","c6d4","",10]} 13... Rac8 $146 (13... Nxd4 $1 $11 {keeps the balance.} 14. Bxd4 e5) ({Predecessor:} 13... Nxd4 14. Bxd4 d5 15. e5 Nd7 16. f4 Bc5 17. g5 Rac8 18. O-O-O b4 19. axb4 Bxb4 {0-1 Atas,Y (1567)-Alkan,S (1831) TUR-ch op Antalya 2008 (8.53)}) {[%tqu "En","","","","g4g5","",10]} 14. g5 $1 $16 {[#] Black must now prevent Nxc6. White is more active.} Nxd4 (14... Nd7 $16 {might work better.}) 15. Bxd4 (15. gxf6 $18 {and the rest is easy.} Nxc2+ 16. Qxc2 Bxf6 17. h6) 15... Nd7 {[%tqu "En","","","","e1c1","",10]} 16. g6 ({White should play} 16. O-O-O $1 $16) {[%tqu "En","","","","h7h6","",10]} 16... Bf6 $2 (16... h6 $1 $11) {[%tqu "En","","","","g6h7","",10]} 17. gxh7+ $1 (17. h6 $6 fxg6 18. hxg7 Rf7 $11) 17... Kh8 {[%tqu "En","","","","e1c1","",10]} 18. O-O-O $1 Bxd4 19. Qxd4 {[#] h6 is the strong threat.} Qc5 20. Qxd6 Nf6 21. Qf4 (21. Qh2 $18) 21... Nxh5 22. Qd2 Nf6 (22... Bc6 $142) 23. Rdg1 Rfd8 24. Qf4 $40 {[%CAl Og1g7][%mdl 128] aiming for Rxg7! White is out for blood. Dancing on a razor blade.} Qd6 $2 {[%mdl 8192]} (24... e5 $16 {is tougher.} 25. Qg5 Ne8) 25. e5 (25. Qg5 Qf8 26. Kb1 Rc5 $16) 25... Nd5 26. Nxd5 ({Not} 26. Qxf7 Qxe5 27. Nxd5 (27. Qxb7 Nxc3 28. bxc3 Qxc3 $17) 27... Bxd5 $17) 26... Qxd5 27. Qg5 {[%csl Gg1][%CAl Rg5g7]} (27. Qxf7 $2 {loses.} Qd2+ 28. Kb1 Rd7 29. Qxe6 Qxc2+ 30. Ka1 Rd2 $19) 27... Rxc2+ 28. Kxc2 {[%csl Gg1][%CAl Rg5g7]} Qc5+ 29. Kb1 {[%csl Gg1][%CAl Rg5g7]} Qf8 30. Rd1 Rc8 31. Rd6 Bd5 32. Rc1 f6 33. Rxc8 {White mates.} Qxc8 34. exf6 gxf6 35. Qxf6+ Kxh7 36. Bd3+ {Nicely played by Koyama. Weighted Error Value: White=0.28 (precise) /Black=0.65. Loses game: --- Black=1 Missed win: --- --- Mistake: White=6 Black=5 Inaccurate: White=1 --- OK: White=3 Black=8 Best: --- Black=2 Strong: White=2 --- Brilliant: --- ---} 1-0 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "4.1"] [White "Koyama, Nobuyuki"] [Black "Jones, Stephen"] [Result "1/2-1/2"] [ECO "B17"] [WhiteElo "1664"] [BlackElo "2285"] [Annotator "Tactical Analysis 6.1"] [PlyCount "112"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 14,112,66,71,102,85,187,58,192,123,127,126,127,70,204,105,166,149,199,194,223,207,215,91,214,111,119,115,117,57,160,42,67,0,3,-12,-17,-33,-23,-138,-124,-139,-147,-250,-240,-195,-116,-117,-22,-323,-310,-310,-307,-315,-292,-323,-271,-279,-54,-274,-246,-308,-296,-333,-326,-308,-302,-297,-291,-334,-332,-329,-311,-425,-417,-492,-484,-464,-453,-437,-215,-221,-159,-176,-155,-176,-136,-176,-167,-128,-132,-146,0,-148,0,-5,0,-1,0,0,0]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 e6 7. Bd3 Qc7 8. O-O b6 {B17: Caro-Kann: Modern Line (4...Nd7).} {[%tqu "En","","","","f1e1","",10]} 9. Re1 $1 Bb7 (9... Be7 $16) {[%tqu "En","","","","f3g5","",10]} 10. Qe2 (10. Ng5 $1 $18) 10... Nd5 $146 (10... Bd6 $14) ({Predecessor:} 10... O-O-O 11. a4 a5 12. Ng5 Nb8 13. c3 Bd6 14. Bd2 Nd5 15. N5e4 Bf4 16. b4 Bxd2 17. Qxd2 Qf4 18. Qb2 axb4 19. cxb4 Nc7 20. Ne2 Qh4 21. Rec1 Rd5 22. b5 Rh5 23. Nd6+ {1-0 Mateus Urbano,L (2255)-Andrade Truyol,G (2027) American Continental 13th Medellin 2017 (3)}) 11. Bd2 (11. Ng5 $18 {[%CAl Og5f7] Nxf7! is the strong threat.} N7f6 12. c4) 11... Nf4 $16 12. Bxf4 Qxf4 13. c3 (13. a4 $16) 13... O-O-O (13... g6 $14) 14. Ba6 ({White should play} 14. a4 $18) 14... Qc7 (14... g5 $16) 15. a4 h5 (15... Bxa6 $16 16. Qxa6+ Kb8) 16. Ne4 Nf6 17. Bxb7+ Kxb7 18. Ne5 (18. a5 $18 {has better winning chances.}) 18... Ng4 (18... Nxe4 $16 {might work better.} 19. Qxe4 Bd6) 19. Ng5 (19. a5 $18 {Hoping for axb6.} bxa5 20. f4) 19... Nxe5 20. dxe5 g6 21. Nf3 {White is more active.} (21. Rad1 $16 {And now Rxd8 would win.} Bg7 22. f4) 21... Bh6 (21... a5 $14) 22. Nd4 ({Better is} 22. b4 $16) 22... Rd5 $14 23. Qe4 (23. b4 $14) 23... Rhd8 $11 24. f4 Bf8 25. b4 {Prevents Bc5.} Qd7 {[%CAl Of8b4]} (25... Bxb4 {simplifies} 26. Nxe6 fxe6 27. cxb4 Qf7) {[%tqu "En","","","","a1b1","",10]} 26. Nb3 (26. Rab1 $1 $11 {remains equal.}) 26... Rd3 $17 27. Rac1 Qd5 28. Nd4 (28. Qxd5 $17 {keeps fighting.} R8xd5 29. Re4) 28... Qxe4 $19 29. Rxe4 {[%tqu "En","","","","f8b4","",10]} c5 (29... Bxb4 $1 $19 {[%mdl 512]} 30. Nxe6 fxe6 31. cxb4 R8d4) 30. Nf3 $17 {[%tqu "En","","","","c5b4","",10]} Rd1+ (30... cxb4 $1 $17 31. cxb4 Rb3) 31. Re1 $2 {[%mdl 8192] [#]} (31. Rxd1 $11 {and White is okay.} Rxd1+ 32. Kf2) 31... Rxe1+ $19 32. Rxe1 cxb4 33. cxb4 Bxb4 {[%mdl 4096] Endgame KRB-KRN} 34. Rc1 a6 {[%CAl Ba7a6,Ba6b5,Bb5b4,Bb4b3][%mdl 32]} 35. Kf2 Rc8 $2 (35... Bd2 $19 36. Nxd2 Rxd2+ 37. Kf3 b5 38. axb5 axb5) 36. Rd1 (36. Rxc8 $15 Kxc8 37. Ng5) 36... Rc7 37. Kg3 Be7 38. Rd3 b5 39. axb5 axb5 40. Nd2 b4 41. Ne4 Kb6 42. Kf3 Kb5 43. Ke3 Ka4 44. Kd2 b3 45. Nc3+ Kb4 46. Rd4+ Kc5 (46... Rc4 $142 47. Rxc4+ Kxc4) 47. Kd3 Rb7 48. Na4+ Kb5 49. Kc3 {Against Bb4+} Ka5 50. Rc4 {[%tqu "En","","","","e7a3","",10]} Ba3 $1 {[#] Threatens to win with ...b2.} 51. Nc5 Bxc5 52. Rxc5+ Kb6 (52... Ka4 $17 53. Rc8 Ra7) 53. Rc4 (53. Rc8 $11) 53... Rd7 (53... Ka5 $17 {White must now prevent ...b2.} 54. Rc8 b2 55. Ra8+ Kb5 56. Kxb2 Kc4+ 57. Kc2 Kd4) 54. Kxb3 {The position is equal.} Rd2 55. Rc2 Rxc2 56. Kxc2 Kc5 {Weighted Error Value: White=0.55/Black=0.48. Loses game: White=2 --- Missed win: --- Black=1 Mistake: White=12 Black=12 Inaccurate: White=1 --- OK: White=8 Black=14 Best: White=4 Black=6 Strong: --- Black=1 Brilliant: --- ---} 1/2-1/2 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.29"] [Round "4.2"] [White "Manabe, Hiroshi"] [Black "Higashishiba, Teruomi"] [Result "1-0"] [ECO "D15"] [WhiteElo "2006"] [BlackElo "1951"] [Annotator "Tactical Analysis 6.1"] [PlyCount "85"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 12,85,11,2,37,46,82,49,69,45,56,52,100,107,101,94,128,66,300,298,314,178,177,182,173,142,314,303,286,220,403,396,370,196,203,196,344,376,412,403,421,417,460,445,496,486,509,494,563,554,574,566,566,505,546,549,483,483,483,483,483,483,483,483,659,645,667,648,654,640,700,698,686,659,659,649]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. e3 b5 6. cxd5 cxd5 7. Be2 g6 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 8. O-O Bg7 (8... Bb7 $14 {is superior.}) 9. Ne5 $146 ({Predecessor:} 9. Qb3 Qd6 10. Bd2 O-O 11. Rfc1 Nc6 12. Be1 Bd7 13. a4 b4 14. Nb1 Na5 15. Qd1 {1-0 Zawadzki,S (2398)-Sabol,M (2358) Litomysl op 2004 (8)}) 9... Bb7 {White is slightly better.} 10. Bd2 {White has more active pieces.} Nbd7 11. f4 Ne4 (11... O-O $14) 12. Nxe4 $16 dxe4 13. a4 Nxe5 14. fxe5 ({White should play} 14. dxe5 $16 O-O 15. axb5 axb5 16. Rxa8 Qxa8 17. Bb4 (17. Bxb5 Bd5 $16)) {[%tqu "En","","","","e8g8","",10]} 14... Qd7 {[#]} ({Black should try} 14... O-O $1 $14) 15. axb5 $18 axb5 16. Rxa8+ (16. Qb3 $142 O-O 17. Bxb5 (17. Qxb5 Qxb5 18. Bxb5 Bd5 $16)) 16... Bxa8 17. Qb3 {[%csl LRb5,LRf7]} O-O 18. Bxb5 {[%CAl Be2b5,Bb5d7,Bd7c8][%mdl 32]} Bd5 $2 {[#] A mistake that costs the game.} (18... Bc6 $16) 19. Bxd7 Bxb3 20. Rc1 {Black must now prevent Bb4.} e6 $2 (20... Rd8) 21. Bb4 Rd8 22. Rc8 {Prevents f6.} (22. Be7 $142 Rb8 23. Rc5) 22... Rxc8 23. Bxc8 {[%mdl 4096] Endgame Hoping for Bb7. KBB-KBB} Bh6 (23... f5 {might work better.} 24. exf6 Bxf6) 24. Kf2 Bg5 25. Bb7 Bc2 26. Bc5 f6 27. Be7 {White is clearly winning.} Kf7 28. Bxf6 Bxf6 29. exf6 Kxf6 {KB-KB} 30. b4 Bd3 31. Bc6 Ke7 32. Kg3 Kd6 33. Ba8 e5 34. dxe5+ Kxe5 35. h4 Bb5 36. Bb7 h6 37. Bc8 Bd3 38. Bd7 {Prevents Bb5.} Ba6 39. Bc6 Bd3 40. b5 {[%CAl Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Bc2 41. b6 Kd6 42. b7 Kc7 {[%tqu "En","","","","g3f4","",10]} 43. Kf4 $1 {Weighted Error Value: White=0.14 (very precise) /Black=0.54. Loses game: --- Black=2 Missed win: --- --- Mistake: White=3 Black=4 Inaccurate: White=1 Black=2 OK: White=15 Black=7 Best: White=6 --- Strong: --- --- Brilliant: --- ---} 1-0 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.30"] [Round "5.1"] [White "Jones, Stephen"] [Black "Tabe, Masaharu"] [Result "1-0"] [ECO "E07"] [WhiteElo "2285"] [BlackElo "1628"] [Annotator "Tactical Analysis 6.1"] [PlyCount "63"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 14,63,39,39,75,51,60,45,54,5,13,14,26,0,32,21,109,119,351,351,396,417,419,393,414,365,489,490,628,615,683,657,656,638,651,638,647,597,643,629,640,623,642,639,648,643,653,651,679,647,779,700]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 c6 5. b3 Nbd7 6. Bg2 Be7 7. O-O O-O 8. Nc3 Qc7 {E07: Closed Catalan: Main Line (5 Nf3 0-0 6 0-0 Nbd7).} (8... b6 $14) 9. Bb2 b6 10. Rc1 {[%CAl Of3e5]} Bb7 {White is slightly better.} 11. Qc2 (11. Nd2 $14 {is superior.}) 11... Rac8 12. Rfd1 h6 13. Qb1 $146 ({Predecessor:} 13. e4 dxe4 14. Nxe4 c5 15. Nxf6+ Nxf6 16. dxc5 Bxc5 17. Ne5 Bxg2 18. Kxg2 Qb7+ 19. f3 {0-1 Cheparinov,I (2677)-Harikrishna,P (2752) ESP-chT Div Honor Monzon 2016 (1.4)}) 13... Rfe8 14. Ne5 {[#] Hoping for cxd5.} Nxe5 (14... Qb8 $11) 15. dxe5 $16 Ng4 {A mistake that costs the game.} (15... Qxe5 $16 {might work better.} 16. Nxd5 Qxe2 17. Nxf6+ gxf6) 16. cxd5 $18 Qxe5 {aiming for ...Qh5.} 17. d6 Qh5 18. h3 {Really sharp!} ({Not} 18. dxe7 Qxh2+ 19. Kf1 c5 $11) 18... Nxf2 19. Kxf2 Qc5+ 20. Kf1 {[%CAl Bf2f1,Bf1g1,Bg1h2][%mdl 32] White is clearly winning.} Bg5 21. d7 {[%csl LRc8,LRe8]} Ba6 22. dxe8=Q+ Rxe8 23. Ne4 Qf5+ 24. Kg1 Bxe2 25. Nxg5 Qxg5 26. Re1 Bh5 27. Kh2 Bg6 28. Qa1 f6 29. Rcd1 h5 30. Qc1 Qa5 31. Qc3 Qb5 32. Bxc6 {Weighted Error Value: White=0.13 (very precise) /Black=0.48. Loses game: --- Black=1 Missed win: --- --- Mistake: White=1 Black=1 Inaccurate: White=1 Black=2 OK: White=3 Black=2 Best: White=2 --- Strong: --- --- Brilliant: --- ---} 1-0 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.30"] [Round "5.2"] [White "Fukuda, Toyoaki"] [Black "Koyama, Nobuyuki"] [Result "0-1"] [ECO "B22"] [WhiteElo "1721"] [BlackElo "1664"] [Annotator "Tactical Analysis 6.1"] [PlyCount "132"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 10,132,97,97,102,96,105,86,80,57,60,25,63,61,65,-13,27,7,9,7,8,10,79,-28,-14,-33,35,26,31,25,11,-21,-25,-25,-28,-115,-121,-106,139,0,0,0,0,0,6,6,24,23,74,-72,-82,-78,-13,-13,-12,-20,-5,-4,-7,-8,-6,-6,-3,-21,-7,-22,-24,-30,-7,-7,-11,-24,-21,-25,-24,-31,-13,-32,-14,-16,-10,-175,-133,-165,-37,-35,-27,-32,-15,-182,-169,-377,-387,-547,-544,-573,-529,-551,-549,-552,-542,-542,-541,-582,-588,-585,-584,-579,-575,-586,-576,-563,-538,-576,-578,-579,-569,-589,-579,-589,-586,-575,-560,-766,-757]} 1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 a6 6. Nf3 g6 {B22: Sicilian: 2 c3.} 7. h3 Bg7 8. Be3 O-O {White is better.} 9. Qd2 b5 10. a3 Bb7 (10... e5 $11 {is more appropriate.}) 11. Bd3 $14 Nbd7 12. Bh6 ({White should play} 12. O-O $14) 12... Rc8 (12... Bxh6 {feels stronger.} 13. Qxh6 e5) 13. Bxg7 Kxg7 14. O-O e5 $146 ({Predecessor:} 14... Nb6 15. Rfe1 Nc4 16. Bxc4 Rxc4 17. Rad1 Qa8 18. Qe3 Nd7 19. Nd2 Rcc8 20. Nb3 Nb6 {½-½ Marcinek,M (1984)-Zbirka,P (2086) SVK-chT2C 0708 Slovakia 2007 (11.1)}) 15. d5 Qb6 (15... Nh5 $11 {remains equal.}) {[%tqu "En","","","","b2b4","",10]} 16. Kh1 (16. b4 $1 $16) 16... Nc5 $11 17. Bc2 {Inhibits Nb3.} a5 ({Black should try} 17... Rc7 $15) {[%tqu "En","","","","b2b4","",10]} 18. b4 $1 $14 axb4 19. axb4 Na6 20. Rab1 Rc4 21. Bd3 Rxb4 22. Nxb5 (22. Bxb5 $11 Nxe4 23. Nxe4 Rxe4 24. Rfc1) 22... Nxe4 $17 23. Bxe4 Rxe4 (23... Rxb5 $17 24. Bd3 Rb4) {[%tqu "En","","","","b5c3","",10]} 24. Nxd6 Qxd6 $11 25. Rxb7 {[#] aiming for Ng5.} Nc5 26. Rb5 Nd7 27. Rc1 Qa6 (27... Rb8 {seems wilder.} 28. Rc6 Qf8 29. Ra5 Qb4) 28. Ra5 Qe2 (28... Qb6 $11) {[%tqu "En","","","","d2e2","",10]} 29. Qc3 (29. Qxe2 $1 $16 {and life is bright.} Rxe2 30. Ra7) 29... Qxf2 $17 30. Rc2 {[%tqu "En","","","","f2g3","",10]} Re2 {Black is more active.} (30... Qg3 $1 $17 {White should prevent ...Qf4.} 31. Ra1 Nf6) 31. Rxe2 $11 Qxe2 32. Ra7 Qd1+ 33. Kh2 $132 {[%mdl 2048] White puts up resistance} Qxd5 {[#] Threatens to win with ...f6.} (33... Nf6 {is interesting.} 34. Nxe5 Qxd5 35. Ng4 Qd6+) 34. Qc7 {Against f6} Nf6 35. Nxe5 Qe6 36. Nf3 Ne4 37. Nd4 (37. Qe5+ {simplifies} Qxe5+ 38. Nxe5 Kg8 39. Re7) 37... Qf6 38. Nf3 Qd6+ 39. Qxd6 Nxd6 {[%mdl 4096] Endgame KRN-KRN} 40. Nd4 Kg8 41. g4 Re8 42. g5 Re3 43. Nc6 Nf5 44. Nd8 Re7 45. Ra6 (45. Rxe7 $11 Nxe7 46. Kg3) 45... Re8 (45... Kf8 $19 46. Kg2 Re8) 46. Nc6 Kg7 (46... Re6 $19 {Hoping for ...Kg7.} 47. Ra8+ Kg7) 47. Ra7 $15 Re2+ 48. Kg1 Re3 {[%CAl Oh7h5]} 49. Kh2 $2 {White is on the road to losing.} (49. Kf2 $11) {[%tqu "En","","","","f5h4","",10]} 49... Nh4 $1 $19 {White must now prevent ...Nf3+.} 50. Nd8 $2 (50. Ra5) 50... Nf3+ 51. Kg3 (51. Kg2 $142 Nxg5 52. h4 Re2+ 53. Kg3) 51... Nxg5+ {Black is clearly winning.} 52. Kf4 Re8 ({Inferior is} 52... Rxh3 53. Kxg5 Rh5+ 54. Kf4 $11) 53. Nc6 Nxh3+ 54. Kg4 Nf2+ 55. Kf3 Nd3 56. Ne7 Ne5+ 57. Kf4 Nd3+ 58. Kf3 h5 59. Kg3 Ne5 60. Kf4 Nc4 61. Kg5 f6+ 62. Kf4 Kh6 63. Nd5 g5+ 64. Kf3 Ne5+ 65. Kg2 Ng4 66. Nxf6 Nxf6 {Weighted Error Value: White=0.35/Black=0.27 (precise) . Loses game: White=2 --- Missed win: --- --- Mistake: White=7 Black=9 Inaccurate: White=3 --- OK: White=20 Black=21 Best: White=5 Black=4 Strong: White=1 Black=1 Brilliant: --- ---} 0-1 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.30"] [Round "6.1"] [White "Higashishiba, Teruomi"] [Black "Jones, Stephen"] [Result "0-1"] [ECO "B12"] [WhiteElo "1951"] [BlackElo "2285"] [Annotator "Tactical Analysis 6.1"] [PlyCount "130"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 10,130,27,17,19,-8,50,50,50,40,58,18,70,20,24,-7,53,27,29,25,70,75,71,69,69,75,76,75,77,-3,-7,-30,-33,-42,-22,-31,-30,-33,0,-28,0,0,0,0,8,14,19,0,14,16,19,18,21,17,51,23,28,32,43,20,60,0,0,0,0,0,0,-7,-3,-57,-61,-123,25,14,14,0,20,18,20,23,22,0,4,0,6,6,16,0,0,0,0,0,0,0,1,0,0,0,0,0,0,-2,0,0,0,0,0,-508,-503,-507,-464,-453,-439,-615,-611,-579,-593,-682,-667,-29989,-29990,-29990,-29991]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 a6 {6...Qc7 is becoming the main line. B12: Caro-Kann: Advance Variation.} 7. a4 Ne7 (7... c5 $11) 8. Be2 $14 Rc8 {White is slightly better.} 9. O-O c5 10. dxc5 (10. Nxc5 $14 Nxc5 11. dxc5) 10... Nc6 $146 (10... Bg4 $11) ({Predecessor:} 10... Nxc5 11. Nxc5 Rxc5 12. c3 Rc8 13. Be3 Nc6 14. Nd4 Nxd4 15. Bxd4 Be7 16. Qd2 O-O {0-1 Lymar,V (2066)-Sidorika,V (2278) Kiev Shystariov Blitz 2022 (9)}) {[%tqu "En","","","","b3d4","",10]} 11. Nfd4 (11. Nbd4 $1 $14) 11... Bg6 $11 12. f4 Be4 (12... Nxd4 $11 13. Nxd4 Bxc5) 13. Be3 Nxd4 14. Bxd4 ({Reject} 14. Qxd4 Bxc2 15. Qc3 Bxb3 16. Qxb3 Bxc5 17. Bxc5 Nxc5 $17) 14... Bxc5 (14... Nxc5 $11 {is superior.} 15. Nd2 Bg6) 15. Nxc5 $14 Nxc5 16. b4 Nd7 17. c3 O-O 18. a5 f6 19. Bg4 (19. exf6 $16 Nxf6 20. g3) {[%tqu "En","","","","f6f5","",10]} 19... f5 $1 $11 20. Bf3 Bxf3 21. Rxf3 Rf7 22. Rh3 g6 23. Qe2 Qc7 24. Rf1 Qc4 25. Qf2 Qc7 26. Rg3 Kh8 27. Rg5 Rg8 28. Re1 {[%CAl Bf1e1,Be1e3,Be3h3][%mdl 32]} Qd8 29. Re3 h6 30. Rh3 Rh7 31. Rgg3 g5 32. fxg5 (32. Rh5 {simplifies} Nf8 33. fxg5 hxg5 34. Qe2) 32... hxg5 33. Rxh7+ Kxh7 34. Qe2 Kg6 {Inhibits Qh5+.} (34... g4 $11) 35. Be3 (35. Rh3 Rh8 $11) ({Better is} 35. h3 $14) 35... g4 36. h3 Kf7 (36... Nxe5 $2 37. Bd4 $18) (36... Qh4 {is more complex.} 37. Bf2 Qh6 38. hxg4 Qc1+) 37. hxg4 Nxe5 (37... Qh4 {with more complications.} 38. Rh3 Qxg4 39. Rh7+ Rg7) 38. g5 {[#] Black must now prevent Qh5+.} {[%tqu "En","","","","e5g4","",10]} Ng4 $1 39. Rxg4 (39. Qd3 $11 Rg7 40. Bd4) 39... fxg4 $15 40. Qxg4 $11 {[%mdl 4096] Endgame KQR-KQB} ({White should play} 40. Qf2+ $15 Ke8 41. Qf4) 40... Qe7 ({Black should try} 40... Qf6 $17 {Strongly threatening ...Rg7.} 41. c4 (41. Qh5+ Qg6 $17) 41... dxc4) 41. Qh5+ {[%mdl 1024] White has compensation.} Rg6 42. Bf4 Qf8 43. Be5 {[#] Hoping for Qh7+.} Qg8 {Against Qh7+} 44. Bf6 {[%CAl Oc3c4]} Ke8 {Against c4} 45. Qh2 Kd7 46. Qe5 {[%CAl Oc3c4]} (46. Qh4 {simplifies} Kc8 47. c4 dxc4 48. Qxc4+ Kb8 49. Qf4+) 46... Qc8 {Inhibits c4.} 47. Qh2 Qg8 {Against Qh7+} 48. Qe5 {[%CAl Oc3c4]} (48. Qh4 {simplifies} Kc8 49. c4 dxc4 50. Qxc4+ Kb8 51. Qc5) 48... Qc8 {Inhibits c4.} 49. Qd4 Qc4 50. Qb6 Qc7 {Inhibits Qd8+. Threatens to win with ...Qxb6+.} 51. Qe3 Qc4 {Against Qd3} 52. Qf3 Qh4 53. Qd3 Qe1+ 54. Kh2 Qh4+ 55. Kg1 Qe1+ 56. Kh2 Qh4+ 57. Qh3 Qf4+ 58. Qg3 $2 {[%mdl 8192]} (58. Kg1 $11 {and White stays safe.} Qc1+ 59. Kh2 Qf4+ 60. Kg1 Qc1+ 61. Kh2 Rxg5 62. Qh7+ Kc6 63. Bxg5 Qxg5 64. Qf7) {[%tqu "En","","","","f4g3","",10]} 58... Qxg3+ $1 $19 59. Kxg3 {KR-KB} {[%tqu "En","","","","e6e5","",10]} e5 $1 60. Kg4 {And now Kf5 would win.} Ke6 61. Bh8 (61. Bd8 $142 Rg8 62. Bb6) 61... Rg8 62. Bf6 Rc8 63. Kh5 Rxc3 64. g4 Rh3+ 65. Kg6 d4 {Weighted Error Value: White=0.34/Black=0.12 (very precise) . Loses game: White=1 --- Missed win: --- --- Mistake: White=7 Black=6 Inaccurate: White=6 Black=3 OK: White=15 Black=23 Best: White=2 Black=3 Strong: --- Black=3 Brilliant: --- ---} 0-1 [Event "Japan Senior Chess Championship 2023"] [Site "Chess.com"] [Date "2023.07.30"] [Round "6.2"] [White "Koyama, Nobuyuki"] [Black "Manabe, Hiroshi"] [Result "0-1"] [ECO "C10"] [WhiteElo "1664"] [BlackElo "2006"] [Annotator "Tactical Analysis 6.1"] [PlyCount "112"] [EventDate "2023.??.??"] [TimeControl "2700+30"] {[%evp 11,112,-17,-12,-15,-3,-45,-46,-41,-31,-33,-31,-35,-26,-28,-17,-22,-6,-33,-9,-34,-27,-34,-30,-39,-9,-12,-11,-12,-12,-16,-14,-22,-10,-18,-5,-6,0,0,0,0,0,0,0,0,0,-6,-9,-8,0,0,0,-3,0,0,0,0,0,-45,-41,-73,-9,-208,-95,-124,-111,-430,-421,-404,-404,-413,-339,-424,-428,-501,-500,-497,-493,-457,-480,-554,-527,-557,-554,-659,-671,-814,-737,-767,-767,-767,-767,-723,-677,-816,-1162,-884,-931,-1496,-1364,-1281,-1336,-886,-802]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 c5 7. c3 {7.Be2 is vanishing. C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4.} cxd4 8. cxd4 (8. Nxd4 $11 Be7 9. Be2) 8... Bb4+ $15 9. Bd2 {Black is slightly better.} Qa5 (9... Bxd2+ {simplifies} 10. Qxd2 b6 11. Be2 Bb7) 10. a3 Bxd2+ 11. Qxd2 Qxd2+ 12. Kxd2 b6 $146 ({Predecessor:} 12... Nb6 13. Rc1 Bd7 14. Ne5 Rc8 15. Bd3 Ke7 16. Be4 Nbd5 17. Bxd5 Nxd5 18. Ne4 b6 {½-½ Canamas Soler,J-Hernandez Garces,J Asturias Preferente-chT Spain 1997}) 13. Rc1 Ke7 14. Be2 Nd5 15. Ng5 h6 16. N5e4 Bb7 17. Bf3 Rac8 (17... Rhd8 {simplifies} 18. Ne2 Rab8 19. h4 Kf8) 18. Nc3 {[#] Strongly threatening Bxd5.} N7f6 19. Nxd5+ (19. Rhe1 {feels hotter.} Kd7 20. Nf1 Rhd8 21. Ne3) 19... Bxd5 20. Bxd5 (20. Rxc8 {simplifies} Rxc8 21. Bxd5 Nxd5 22. Ne2) 20... Nxd5 21. Ne2 {Prevents Nf4.} Rhd8 22. g3 a6 23. Rhe1 b5 24. Rxc8 Rxc8 25. Rc1 Rxc1 26. Nxc1 $11 {[%mdl 4096] Endgame KN-KN} Kd6 27. Nd3 a5 28. Nc5 Kc6 {Against Nb7} 29. Nd3 f6 {Prevents Ne5+.} 30. b3 Nc7 31. Nf4 Kd6 32. Nh5 Ne8 33. Nf4 g5 34. Nd3 (34. Ne2 $11) 34... Kd5 $15 {[%CAl Oe8d6]} 35. Nc5 Nd6 {Against Nb7} (35... Kxd4 $17 36. Nxe6+ Kd5) 36. Ke3 $2 (36. Kd3 $11) {[%tqu "En","","","","e6e5","",10]} 36... Nf5+ (36... e5 $1 $19 {[%CAl Re5d4] and Black stays clearly on top.} 37. Nd7 Nf5+ 38. Kd3 Nxd4 39. Nxf6+ Ke6) 37. Kd3 $17 {[#] Black must now prevent Nd7.} Nxd4 38. b4 {[%mdl 8192]} (38. Ne4 $17 {is more resistant.} Nxb3 39. Nxf6+ Kd6 40. f4) 38... axb4 $19 39. axb4 Nf3 40. h3 f5 41. Ke3 Ne5 {Black is clearly winning.} 42. Ke2 Nc6 43. Na6 Kc4 44. Nc7 e5 (44... Kxb4 $2 {is the wrong capture.} 45. Nxe6 Kc3 46. Nc7 $19) 45. h4 Nxb4 46. hxg5 hxg5 {[%CAl Bh6g5,Bg5g4][%mdl 32]} 47. Ne6 g4 48. Ng7 Nc6 49. Kd2 Nd4 {Threatens to win with ...b4.} 50. Ne8 b4 {[%CAl Bb5b4,Bb4b3][%mdl 32] And now ...b3 would win.} 51. Nd6+ Kd5 52. Nb7 b3 {( -> ...b2)} 53. Kc3 {Inhibits b2.} Ke4 54. Nc5+ Kf3 {...Ne2+ is the strong threat.} 55. Nd3 Ne2+ 56. Kxb3 e4 {Weighted Error Value: White=0.41/Black=0.12 (very precise) . Loses game: White=2 --- Missed win: --- --- Mistake: White=2 Black=2 Inaccurate: White=2 Black=1 OK: White=14 Black=18 Best: --- Black=1 Strong: --- --- Brilliant: --- ---} 0-1