[Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "10.10"] [White "Praggnanandhaa R"] [Black "Bjerre, Jonas Buhl"] [Result "1-0"] [ECO "E46"] [WhiteElo "2608"] [BlackElo "2542"] [Annotator "TA"] [PlyCount "87"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,87,0,3,0,0,0,0,0,0,0,58,0,0,-8,17,18,15,15,21,0,6,-10,9,0,18,-6,-6, -21,0,0,0,-22,18,22,30,-38,-47,-41,16,0,0,0,0,0,2,0,337,308,348,79,85,121,269, 254,267,260,249,204,358,355,292,235,254,235,225,264,262,239,251,264,262,266, 204,163,150,111,558,559,561,553]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 c5 6. a3 {E46: Nimzo-Indian: Rubinstein: 4 e3 0-0 5 Ne2 without early Bd3.} Bxc3 7. Bxc3 Ne4 8. Ne2 {The position is equal.} b6 9. d5 Ba6 {[#]} (9... Bb7 $11) 10. Qc2 $5 $146 {[%mdl 8] New and interesting.} (10. b3 $1 $14) ({ Predecessor:} 10. Qd3 exd5 11. Qxd5 Qe7 12. g3 Nc6 13. Bg2 Rae8 14. O-O Nxc3 15. Nxc3 Na5 16. Nb5 {1-0 (39) Bluebaum,M (2660)-Swiercz,D (2649) chess24.com INT 2020}) 10... exd5 $11 11. cxd5 Re8 12. Ng3 Nxc3 13. Bxa6 Nxa6 14. Qxc3 Nc7 15. Rd1 Qg5 16. Qd3 Qg6 (16... Qf6 {with more complications.} 17. Qb3 b5 18. O-O d6 19. e4 a5) 17. Qxg6 hxg6 18. Ke2 Re5 19. e4 Rae8 20. Kd2 {White wants to play f4.} g5 21. f3 Nb5 22. h4 ({White should play} 22. Nf5 $11) 22... Nd6 $15 23. Kc1 g6 (23... a5 $15) 24. h5 f5 25. hxg6 {Strongly threatening Rh7.} fxe4 26. Rh7 R8e7 27. Rdh1 Rxh7 {[%mdl 8192]} (27... exf3 $1 $11 {and Black is okay.} 28. gxf3 Ne8) 28. Rxh7 $11 {[%mdl 4096] Endgame KRN-KRN} e3 {White should prevent ...e2.} 29. Kd1 (29. Rxd7 $18 e2 30. Nxe2 $1 {[%mdl 512]} Rxe2 31. Rxd6) 29... Rxd5+ $16 30. Ke2 Nc4 (30... g4 $16 {was called for.}) 31. Ne4 $18 {Threatening mate with Nf6+.} Rf5 32. Rxd7 Rf8 33. Nxg5 Ne5 (33... Rf6 34. f4 (34. Rxa7 Rxg6 35. f4 Rd6 $16) 34... Rxg6) 34. Rxa7 Nxg6 35. Ne6 Rf6 36. Ra8+ Kh7 {[#]} 37. Ng5+ Kh6 38. Ne4 Nf4+ 39. Kxe3 Nxg2+ 40. Kf2 Rg6 41. Rf8 { aiming for Ng3.} Kg7 42. Rf5 {Ng3 is the strong threat.} c4 $2 {[%mdl 8192]} ( 42... Nh4 $16 43. Rf4 Rg2+ 44. Kf1 Ng6 45. Kxg2 Nxf4+ 46. Kg3 Nd3) 43. Ng3 Nh4 44. Rf4 {[%mdl 64] Double Attack. Weighted Error Value: White=0.26/Black=0.53} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "9.1"] [White "Praggnanandhaa R"] [Black "Keymer, Vincent"] [Result "1-0"] [ECO "A06"] [WhiteElo "2608"] [BlackElo "2591"] [Annotator "TA"] [PlyCount "79"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,79,5,14,0,0,-8,0,0,23,22,19,19,20,27,32,31,37,44,45,33,25,30,53,26,78, -20,-18,-28,-17,-19,-24,-93,-45,-54,-55,-62,-53,-50,-5,-18,0,0,0,-12,-20,-14, -10,-107,-99,-92,0,-69,49,0,98,98,139,73,113,100,133,133,129,130,420,421,504, 480,885,791,939,939]} 1. Nf3 d5 2. h3 c6 3. d4 Bf5 4. c4 e6 5. Nc3 Nf6 6. g4 { [#] A06: Réti Opening: 1 Nf3 d5.} Bg6 $146 ({Predecessor:} 6... Be4 7. Bg2 h6 8. Bf4 Bd6 9. Bxd6 Qxd6 10. c5 Qc7 11. Nxe4 Nxe4 12. Ne5 Nxc5 13. Nxf7 Kxf7 14. dxc5 {1-0 (57) Raeva,E (2143)-Jovkova Draganova,P (2046) Sofia 2003}) 7. Qb3 Qb6 8. c5 {The position is equal.} Qc7 {[#]} 9. Bf4 $1 Qc8 (9... Qxf4 $6 10. Qxb7 Bxc5 11. Qxa8 $16 (11. dxc5 O-O $14)) 10. Ne5 {h4 is the strong threat.} Nbd7 11. Nxg6 hxg6 12. Bg2 e5 13. dxe5 Nxc5 14. Qc2 Nfd7 15. Bg3 Ne6 16. f4 Qd8 {[#]} (16... Bc5 $11) 17. e3 (17. O-O-O $1 $16) 17... Bc5 18. Qe2 Qb6 19. f5 Nc7 20. Bf4 (20. O-O-O $11) 20... g5 21. Bxg5 Nxe5 22. O-O-O f6 23. Bf4 O-O-O 24. Na4 Qa5 25. Nxc5 Qxc5+ 26. Kb1 (26. Qc2 $5 {[%CAl Rc2c5]} Qb6 27. Kb1 $11) 26... Rhe8 27. Qc2 Nc4 28. Ka1 {[#]} (28. Rd3 $11) 28... Na6 $1 $17 29. Rc1 Qa5 (29... Nb4 $17 30. Qc3 Qb6) 30. e4 ({White should try} 30. Qc3 $1 $11) 30... Nb6 ({Don't play} 30... Nb4 $6 31. Qb3 $14) (30... b5 $1 $15 31. Qc3 Qxc3 32. Rxc3 d4) 31. Rhd1 (31. Bd2 $5 {[%CAl Rd2a5]} Qa4 32. Qxa4 Nxa4 33. exd5 $14) 31... d4 (31... dxe4 $11 {keeps the balance.} 32. Rxd8+ (32. Bxe4 Rxd1 33. Rxd1 Nb4 $17 {[%mdl 64] Double Attack}) 32... Rxd8) 32. a3 $36 {[%mdl 2048] White has strong initiative.} Nc7 33. Bh2 ({White should play} 33. g5) 33... Qb5 34. Rd3 Qa4 35. Qxa4 Nxa4 36. Rc4 b5 {[%mdl 8192] Black cannot hold the game after this.} (36... Nb6 $16 {was necessary.} 37. Rcxd4 Nd7) 37. Rxc6 $18 Re7 { White is clearly winning.} 38. Rd1 Kb7 (38... Nb6 $142 39. b3 Kb8) 39. e5 Nd5 40. Rd6 {Weighted Error Value: White=0.24/Black=0.41} 1-0 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "8.10"] [White "Mendonca, Leon Luke"] [Black "Praggnanandhaa R"] [Result "0-1"] [ECO "E14"] [WhiteElo "2549"] [BlackElo "2608"] [Annotator "TA"] [PlyCount "60"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,60,-7,0,-1,5,6,7,0,5,0,14,7,36,28,47,0,10,-73,-87,-89,-88,-110,-103, -119,-114,-118,-85,-121,-60,-135,-130,-224,-222,-224,-208,-224,-208,-685,-707, -1064,-1045,-1002,-1137,-29990,-29991,-29994,-29995,-29997,-29993,-29998, -29999]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 b6 5. cxd5 exd5 6. d4 Bb7 7. b3 { E14: Queen's Indian: Classical Variation (4 e3).} a6 8. Bb2 Nbd7 9. g3 { The position is equal.} Bd6 10. Bg2 Qe7 $5 {[%mdl 4] An interesting side line.} 11. O-O O-O-O 12. a4 h5 13. Qc1 {[#]} Ne4 $146 ({Predecessor:} 13... h4 14. Ba3 hxg3 15. hxg3 Ne4 16. Nxe4 dxe4 17. Nd2 f5 18. Nc4 Bxa3 19. Qxa3 Qe6 {0-1 (27) Harikrishna,P (2732)-Dominguez Perez,L (2758) Lichess.org INT 2020}) 14. Nxe4 ( 14. a5 $11) 14... dxe4 $17 {White is on the road to losing.} 15. Nd2 h4 16. Ba3 Bxa3 17. Qxa3 {[#]} Qe6 18. Rfc1 f5 19. Rc2 Nf6 (19... Kb8 $17 20. b4 Rc8) 20. Rac1 (20. a5 $15) 20... Nd5 21. a5 (21. b4 $17 {was worth a try.}) 21... hxg3 $19 22. hxg3 {[#]} b5 23. b4 Rh5 ({Resist} 23... Qh6 24. Nb3 $17) 24. Nb3 $2 ( 24. Nf1) 24... Rdh8 25. Nc5 Qh6 26. Kf1 Rh2 {( -> ...Rxg2)} 27. Nxb7 {[#]} Rxg2 $1 {[%mdl 512] Black mates.} 28. Nd6+ (28. Rxc7+ Nxc7) 28... Kb8 29. Nxf5 Qh1+ 30. Ke2 {[#]} Rxf2+ $1 {[%mdl 512] Weighted Error Value: White=0.76/Black=0.05} 0-1 [Event "Gelfand Challenge"] [Site "Chess24"] [Date "2021.06.04"] [Round "7.2"] [White "Praggnanandhaa R"] [Black "Zhu, Jiner"] [Result "1-0"] [ECO "E51"] [WhiteElo "2608"] [BlackElo "2462"] [Annotator "TA"] [PlyCount "77"] [EventDate "2021.06.10"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,77,-12,-7,-7,22,12,6,0,18,20,51,35,50,15,16,0,0,0,0,0,0,0,0,0,0,-28, -33,-66,-59,-64,-68,-68,-60,-66,-64,-105,-106,-107,-95,-171,-110,-104,-109, -108,-112,-166,-4,-43,0,0,41,33,107,104,97,71,547,534,656,252,778,688,724,702, 1635,1514]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd2 b6 7. cxd5 exd5 8. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} a6 9. Bd3 Bb7 10. O-O {The position is equal.} Nbd7 11. Ne5 Bd6 12. f4 Ne4 {[#]} 13. Bxe4 $1 $146 {[%mdl 8] A relevant novelty.} ({Predecessor:} 13. Be1 Ndf6 14. Bh4 Qe8 15. Qf3 c5 16. Bxf6 Nxf6 17. g4 Rd8 18. Rcd1 g6 19. g5 {1/2-1/2 (32) Giri,A (2764)-Radjabov,T (2765) chess24.com INT 2020}) 13... dxe4 14. Nxd7 Qxd7 15. f5 Rad8 16. Qg4 Rfe8 17. Be1 f6 18. Bg3 Bf8 19. Ne2 c5 20. b4 {[%CAl Rb4c5]} Rc8 ( {But not} 20... cxd4 $2 21. Rc7 $18) 21. bxc5 bxc5 22. h4 Qf7 23. h5 h6 24. Rfd1 Bd5 ({Much weaker is} 24... Qxa2 $6 25. d5 $11) 25. Bf4 {[#]} Kh8 $1 26. Nc3 (26. dxc5 $17 {was necessary.} Rxc5 27. Rxc5 Bxc5 28. Qg6 Bxa2 29. Ra1) 26... cxd4 $19 27. Rxd4 Bxa2 28. Nxa2 Qxa2 29. Rcd1 {[#]} (29. Qd1 $17) 29... Qf7 $2 (29... a5 $1 $19 {aiming for ...a4.} 30. R1d2 Qb3) 30. Ra1 Rc6 31. Qg6 $36 {[%mdl 2048] White has some pressure.} Qxg6 32. hxg6 Bc5 ({Black should play} 32... Rc5 $14) 33. Rda4 $16 Ra8 34. Rxe4 Kg8 $2 {[%mdl 8192] Loses the game.} (34... Bb6 $16 {is more resistant.}) 35. Rc1 $18 Rac8 {and if ...Bxe3+! works, Black does fine.} 36. Kh2 a5 $2 (36... Ba3 37. Rxc6 Rxc6 38. Re8+ Bf8) 37. Rec4 {White is clearly winning.} h5 38. Kh3 Kf8 {[#]} 39. Rxc5 $1 {[%mdl 576] Remove Defender. Weighted Error Value: White=0.11/Black=0.49} 1-0