[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.1"]
[White "Erigaisi Arjun"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2629"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,18,30,20,53,55,47,27,20,26,25,13,8,0,0,0,0,-30,-25,-24,-31,-38,18,10,16,-31,-29,-25,-10,-12,-26,-31,-35,-38,-37,-74,-70,-129,-40,-48,-5,-9,-14,-19,-3,-1,0,0,0,0,0,-8,-7,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 Bg4 6. c3 e6 7. Qb3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Qb6 8. Qxb6 axb6 9. Bb5 {White is slightly better.} Nd7 10. a4 Be7 {[#]} 11. O-O $146 ({Predecessor:} 11. Ne5 Ndxe5 12. Bxe5 f6 13. Bc7 Bd8 14. Bd6 Be7 15. Bc7 Bd8 16. Bg3 Kd7 17. f3 {0-1 (51) Tang,A (2496)-Zubritskiy,A (2442) Chess.com INT 2019}) 11... O-O 12. Ra2 Rfc8 13. Rfa1 Bf5 14. Kf1 h6 15. h3 g5 16. Bh2 Nf6 (16... h5 $15) 17. Ne5 $11 c4 18. Bxc6 (18. f3 $11 {should be considered.}) 18... bxc6 $15 19. a5 b5 20. b4 cxb3 21. Nxb3 Ne4 22. Rc1 c5 23. dxc5 Nxc5 24. Nd4 (24. Nxc5 $15 Rxc5 25. Raa1) 24... Bf6 (24... Bh7 $17 {...Ra6 is the strong threat.} 25. a6 f6) 25. Rd1 Ne4 (25... Bh7 $15) 26. Nxf5 $11 {The position is equal.} exf5 27. Nd7 Bd8 (27... Rxc3 $2 28. f3 Ra7 29. Nxf6+ Nxf6 30. Be5 $18) ({Resist} 27... Bxc3 28. Nb6 Bf6 29. Nxc8 (29. Nxa8 Rxa8 30. Rxd5 Nc3 $16) 29... Rxc8 30. a6 $16 (30. Rxd5 Rc1+ 31. Ke2 Nc3+ 32. Kf3 Nxd5 $17)) 28. Be5 Rxa5 29. Rxa5 Bxa5 30. Rxd5 Bxc3 31. Rxb5 Bxe5 32. Rxe5 {[%mdl 4096] Endgame KRN-KRN} Rc1+ 33. Ke2 Rc2+ 34. Ke1 Nxf2 {[#] Threatens to win with ...Nd3+.} 35. Nf6+ $1 Kg7 36. Rxf5 Nd3+ 37. Kf1 Kg6 38. g4 Rf2+ 39. Rxf2 Nxf2 {Weighted Error Value: White=0.08 (flawless) /Black=0.09 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.2"]
[White "Jumabayev, Rinat"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2631"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,85,17,10,10,5,6,4,11,9,20,29,31,22,36,35,50,32,24,20,51,20,16,16,23,21,36,29,36,27,34,39,47,51,71,65,65,58,56,8,18,0,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Nc6 11. e3 Nb4 12. Bxb4 Bxb4 13. a3 Bd6 {E05: Open Catalan: 5 Nf3 Be7.} 14. Nbd2 Rc8 $1 15. Nb3 {Prevents c5.} Be4 16. Qc3 Bd5 {[%cal Oc7c5]} 17. Nc5 Bxc5 18. dxc5 {[#]} Ne4 $146 ({Predecessor:} 18... c6 19. b4 Ne4 20. Qb2 a5 21. Nd4 a4 22. Rad1 Qc7 23. f3 Nf6 24. e4 Bc4 {1-0 (67) Szerlak,A (2337)-Ylipartanen,J (2063) ICCF email 2017}) 19. Qc2 Ng5 20. Nxg5 Qxg5 21. h4 Qe7 22. Bxd5 exd5 23. c6 Rfd8 24. Rfd1 Rd6 25. a4 Qf6 26. axb5 axb5 27. Rac1 g6 28. Rd4 Ra8 29. Qc5 {[%csl LRb5,LRd5] White is more active.} Ra4 30. b4 Ra2 31. Rf4 (31. Rf1 $14 {might be stronger.}) 31... Qb2 $11 {The position is equal.} 32. Kg2 {[%cal Oh4h5]} Rf6 33. Rf1 Rxf4 34. exf4 {[%mdl 4096] [#] Endgame And now Re1 would win. KQR-KQR} Qe2 {To avoid Re1} 35. Qxd5 Rd2 36. Qe5 Qxe5 37. fxe5 {KR-KR} Re2 38. Rd1 {Threatens to win with Rd8+.} Rxe5 39. Rd7 {Strongly threatening Kf3.} Re4 40. Rxc7 Rxb4 41. Rb7 Rc4 42. c7 {[#] Intending Rb8+ and mate.} Kg7 43. Rxb5 {Weighted Error Value: White=0.05 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.3"]
[White "Ganguly, Surya Shekhar"]
[Black "Maurizzi, Marc`Andria"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2627"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,77,0,34,33,30,16,29,15,27,37,37,37,37,34,37,25,37,31,29,27,35,34,27,30,24,29,29,39,23,31,37,33,66,56,69,71,68,68,68,65,77,83,74,70,116,117,116,116,107,107,102,46,39,33,39,44,69,31,141,102,107,93,193,174,1164,1022]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 Be7 5. b3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 {A13: English Opening: 1...e6.} Nc6 9. Be2 Ne4 10. dxc5 {White has an edge.} Qa5 11. Rc1 Bf6 {[%cal Re4c3]} 12. Nd4 $1 Nxc5 13. Nxc6 $1 bxc6 14. O-O Ne4 {[%cal Rf6c3]} 15. Qc2 Bxc3 16. Bxc3 Nxc3 17. Qxc3 Qxa2 18. Rc2 Qa3 19. Ra1 Qe7 20. Qxc6 Be6 21. Qc5 $36 {[%mdl 2048] [#] White fights for an advantage.} Qb7 $146 {[#] ...Rac8 is the strong threat.} ({Predecessor:} 21... Qxc5 22. Rxc5 Rfd8 23. b4 d4 24. exd4 Rxd4 25. b5 Rd2 26. Bf3 Rad8 27. h3 R2d7 {1-0 (40) Keymer,V (2602)-Vocaturo,D (2630) Reykjavik 2021}) 22. Qd4 Qb6 23. b4 {[%cal Bb3b4,Bb4b5][%mdl 32] White is much more active. Black has bad knights.} Qxd4 24. exd4 Rfb8 25. b5 Rb7 {Prevents Rc7.} 26. Bd3 g5 27. g3 Re8 28. Re1 Rd8 (28... Kg7 $14) 29. Re5 $16 h6 30. f4 gxf4 31. gxf4 Rd6 32. f5 (32. Rc6 $16 Rb6 33. Rc7) 32... Bd7 $14 33. Rc5 Kf8 34. Kf2 f6 35. Rexd5 ({Much weaker is} 35. Rcxd5 Rbb6 36. Rxd6 Rxd6 $11) 35... Rdb6 (35... Ke7 $14) 36. Kg3 Ke7 37. Kf4 Be8 (37... h5 $16 {was called for.}) 38. Rc1 $18 Rd6 $2 {[#]} (38... Bxb5 39. Rxb5 Rxb5) 39. Re1+ {Weighted Error Value: White=0.06 (flawless) /Black=0.17 (very precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.4"]
[White "Bjerre, Jonas Buhl"]
[Black "L'Ami, Erwin"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2586"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,117,18,19,14,0,0,0,0,-8,7,12,0,12,21,20,23,27,41,8,25,20,22,13,13,4,12,5,8,6,69,64,66,0,0,9,1,3,5,8,9,11,5,0,10,0,6,-5,0,-16,-16,-26,-15,-9,-12,-5,-4,-10,-15,-17,-15,-15,77,77,76,84,77,72,67,67,73,64,64,63,125,125,126,86,92,82,218,218,218,218,218,214,314,211,222,186,186,186,216,214,341,332,399,350,333,209,400,401,401,401,827,755,983,884,29983,29984]} 1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. e3 Bg4 5. Qb3 Qb6 6. Ne5 Bf5 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} 7. cxd5 $1 {[%mdl 4] outshines the older 7.Nc3.} Qxb3 8. axb3 Nxd5 {The position is equal.} 9. Na3 {[%cal Bb1a3,Ba3c4,Bc4a5][%mdl 32]} Nd7 10. Nxd7 Bxd7 11. Nc4 e6 12. Bd2 Be7 13. Be2 O-O 14. O-O {[#]} (14. Ne5 $5 {[%cal Re5d7]} Be8 15. Nd3 $11) 14... Rfd8 $146 ({Predecessor:} 14... c5 15. Ne5 Be8 16. dxc5 Bxc5 17. Rfc1 Be7 18. e4 Nb6 19. Be3 Bf6 20. Bxb6 Bxe5 21. Rxa7 Rxa7 22. Bxa7 {½-½ (31) Hertneck,G (2520)-Riemersma,L (2426) Amsterdam 2013}) 15. Rfc1 Be8 16. Na5 Rd7 17. Bf3 Rc8 18. Nc4 b6 19. e4 {Hoping for Ne5.} Nf6 ({Black should try} 19... Nb4 $11) 20. Be3 $14 {White is more active.} c5 21. d5 ({White should play} 21. dxc5 $14 Bxc5 22. Bxc5 Rxc5 23. e5) 21... exd5 $11 22. exd5 Nxd5 23. Bg4 Rcc7 24. Bxd7 Bxd7 25. Bd2 {[%cal Ob3b4]} Be6 26. Rd1 h5 27. Be1 Kh7 28. f3 h4 29. Rd3 Bf6 {[%mdl 1024] Black has compensation.} 30. Bf2 Nb4 31. Rd2 Nc6 32. Kh1 g5 33. Re1 Nd4 34. Bxd4 Bxd4 35. Nd6 a5 {[#]} (35... Bh8 $11 {keeps the balance.}) 36. Nb5 $1 $16 {[%csl LRc7,LRd4]} Rc6 37. Nxd4 cxd4 {[%mdl 4096] Endgame KRR-KRB} 38. Kg1 {[%cal Ob3b4]} Bxb3 39. Rxd4 Be6 40. Re2 {To avoid Rc2} Kg6 41. h3 Rc5 {[#]} (41... Kf5 $14) 42. f4 $1 Rb5 43. fxg5 Kxg5 44. Rde4 {Black must now prevent Re5+.} Kg6 {A mistake that costs the game.} (44... Rb3 $16 {was worth a try.}) 45. Rxh4 $18 Rb3 46. Ra4 Kf6 47. Kh2 Ke7 (47... Kg6 $142 48. Ra3 Rb5 49. Rg3+ Kh6) 48. Rf2 Kf8 49. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} Kg7 50. h4 Kg6 51. g5 b5 (51... Re3 $142 52. Rf6+ Kg7) 52. Rxa5 Kh5 53. Rg2 Rb4 54. Kg1 {aiming for Ra6.} Bh3 $2 (54... Kxh4 55. Ra6 Bg4) 55. Rh2 Be6 56. Ra8 Kg4 (56... Rc4 $142 57. Re8 Rc1+ 58. Kf2 Rd1) 57. h5 Rd4 58. Rg2+ ({Inferior is} 58. h6 Rd1+ 59. Kf2 Rd2+ 60. Kg1 Rd1+ 61. Kf2 Rd2+ 62. Kg1 Rd1+ $11) 58... Kxh5 59. g6 {Weighted Error Value: White=0.11 (very precise) /Black=0.34} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.5"]
[White "Vogel, Roven"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2452"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,48,10,12,5,16,0,0,0,16,12,25,14,28,26,29,18,18,20,21,19,21,19,19,19,26,14,39,22,22,22,26,18,20,25,29,5,3,2,2,8,8]} 1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. e3 a6 5. b3 c5 6. Be2 {D30: Queen's Gambit Declined: Systems without Nc3.} cxd4 7. exd4 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 {[#]} dxc4 $146 ({Predecessor:} 9... Ne4 10. Qe3 Qa5+ 11. Nfd2 Nxd2 12. Nxd2 dxc4 13. bxc4 O-O 14. O-O Rd8 15. Rfd1 Nd7 {½-½ (30) Goluch,P (2299)-Barglowski,F (2311) Jastrzebia Gora 2018}) 10. bxc4 b6 11. O-O O-O 12. Ne5 Bb7 13. Nc3 Qc7 14. Rfd1 Rd8 15. Qe3 {[%cal Od4d5]} Nc6 16. Nxc6 Bxc6 17. Rab1 Rab8 {[%cal Ob6b5]} 18. h3 h6 19. a4 Qd7 (19... Rd7 {feels hotter.} 20. Bd3 Rdd8 21. Bf1 Re8 22. Rb2 Red8) 20. d5 exd5 21. Rxb6 Bxa4 22. Rxb8 Rxb8 {The position is equal.} 23. Nxa4 Qxa4 24. cxd5 Re8 {A balanced but interesting game.  Weighted Error Value: White=0.05 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.6"]
[White "Dardha, Daniel"]
[Black "Murzin, Volodar"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2533"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,88,22,22,20,21,21,23,21,26,22,36,20,88,24,20,19,25,0,18,11,18,14,18,0,0,0,27,-11,19,13,25,34,26,33,36,30,44,44,37,46,58,56,66,66,68,0,21,-289,-273,-330,-298,-476,-469,-469,-454,-608,-601,-691,-675,-630,-629,-702,-698,-1318,-1217,-1295,-532,-1385,-966,-2730,-2454,-5393,-2964,-29987,-29988,-29988,-29989]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Qc2 b6 7. cxd5 cxd5 $1 {[%mdl 4] is now more promising than 7...exd5.} 8. Nb5 {D45: Semi-Slav: 5 e3.} Bb4+ 9. Bd2 Bxd2+ 10. Nxd2 {White has an edge.} O-O 11. Be2 Ba6 12. a4 {[#]} Qe7 $146 (12... Rc8 $11 13. Qb3 Bxb5 14. axb5 Rc7) ({Predecessor:} 12... Bxb5 13. axb5 Rc8 14. Qb1 Rc7 15. O-O Ne8 16. Bd3 g6 17. Rc1 Nd6 18. Ra3 Rxc1+ 19. Qxc1 {½-½ (30) Legky,N (2510)-Yagupov,I (2450) Spasskoe 1996}) 13. O-O (13. Nc7 $16 Bxe2 14. Nxa8) 13... Rfc8 $11 14. Qb3 Ne8 15. Bd3 Bb7 16. Nc3 {[%cal Bb5c3,Bc3a2,Ba2c1,Bc1d3][%mdl 32]} a6 17. Rfc1 Nd6 18. a5 b5 19. Qa3 Qf8 20. b3 Rc7 21. Na2 Rac8 22. Rxc7 Rxc7 23. Rc1 Qb8 24. Bf1 Rxc1 25. Nxc1 h6 26. Nd3 Ne4 {[#]} 27. Qe7 $1 Nxd2 (27... Qd6 28. Qd8+) 28. Qxd7 {Ne5 is the strong threat.} Qc8 (28... Nxb3 $2 29. Ne5 Qf8 30. Qxb7 $18) 29. Qe7 (29. Qxc8+ $1 $14 Bxc8 30. b4) 29... Qc2 30. Qc5 $2 {[%mdl 8192] Loses the game.} (30. Qxb7 $11 {and White is okay.} Kh7 31. Ne1 (31. Qxa6 Nxf1 32. Kxf1 Qxd3+ 33. Ke1 Qxb3 $11) (31. Qxf7 $2 Qd1 $19)) 30... Qxb3 $19 31. Qc1 Nxf1 32. Nc5 (32. Qxf1 {was the only defense.} b4 33. h4 (33. Nc5 $2 Qa2 $19)) 32... Qa2 33. Kxf1 {[#]} b4 $1 34. Qd1 ({Wrong is} 34. Nxb7 $2 b3 35. Qc8+ Kh7) (34. Ke1 b3) 34... Bc6 {Inhibits Qa4.} 35. h4 Qxa5 36. g4 Qd8 {To avoid g5} 37. Kg2 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 38. Kg3 a4 39. f4 b3 (39... Qb8 $142 {aiming for ...b3.} 40. Qc1 b3) 40. g5 hxg5 41. hxg5 b2 {Strongly threatening ...Qb8.} 42. Nd3 Qb6 43. g6 b1=Q 44. gxf7+ Kf8 {Weighted Error Value: White=0.84/Black=0.31} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.15"]
[Round "1.7"]
[White "Zhu, Jiner"]
[Black "Shuvalova, Polina"]
[Result "0-1"]
[ECO "C88"]
[WhiteElo "2478"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,104,28,12,16,10,19,22,13,16,25,0,8,8,10,8,14,0,-3,0,0,-17,-31,-7,-8,-28,-34,-53,-6,-18,0,0,0,-16,0,-10,0,0,0,0,0,0,0,-18,-22,-45,-47,-35,-38,-38,-9,-18,0,0,0,0,0,0,0,-28,-29,-154,-154,-797,-805,-708,-552,-731,-708,-636,-564,-1457,-687,-1457,-1488,-1154,-1370,-1384,-1353,-1371,-1397,-1360,-1361,-1026,-1033,-908,-848,-925,-655,-752,-608]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3 Bb7 9. d3 d5 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} 10. exd5 Nxd5 11. Nxe5 Nd4 {The position is equal. The old main line.} 12. Nd2 {has lost popularity (12.Nc3).} c5 {[#]} 13. Nf1 $146 ({Predecessor:} 13. Ndf3 Nxb3 14. axb3 f6 15. Ng4 Qd7 16. Bd2 Rae8 17. Re2 Bd6 18. Qf1 Rxe2 19. Qxe2 {0-1 (48) Jakubowski,K (2530)-Wojtaszek,R (2734) Poland 2017}) 13... Qc7 14. Bxd5 Bxd5 15. Bf4 {[%cal Oe5g6]} Bd6 $1 16. Bh2 Rae8 {[%cal Rd6e5]} 17. c3 Bxe5 {This bishop pair is nice.} 18. cxd4 Bxh2+ 19. Nxh2 cxd4 20. Rxe8 Rxe8 21. a3 Qe5 (21... Qb7 $15 22. Qg4 Qc6) 22. Nf1 $11 h5 23. Qd2 $1 {Inhibits Qg5.} Re6 24. f3 h4 25. Kf2 {Prevents Qe2+.} Qf5 26. Re1 Rc6 27. Kg1 Rg6 {[%csl LRf3,LRh3] Strongly threatening ...Bxf3.} 28. Kh2 Kh7 29. Re2 a5 {[%cal Ba6a5,Ba5b4,Bb4b3][%mdl 32]} 30. Re1 {[%cal Be2e1,Be1c1,Bc1c5,Bc5b5,Bb5b4][%mdl 32]} b4 31. axb4 axb4 32. Rc1 b3 {[%cal Od5f3] Hoping for ...Bxf3!} 33. Rc5 Ra6 34. Qf2 {[%csl LRd4,LRh4]} Qf4+ 35. Kg1 Rd6 36. Rb5 g6 {[%cal Bg7g6,Bg6g5][%mdl 32]} 37. Rb4 Be6 $1 38. Nd2 {[#]} (38. Qd2 $11 Qf6 39. Qc1) 38... g5 $1 $17 {Black is much more active.} 39. Ne4 $2 {Loses the game.} (39. Qe2 $17 Kg7 40. Qf2) 39... Rc6 $19 {[%cal Bd6c6,Bc6c1,Bc1c2][%mdl 32] Threatens to win with ...Rc1+. Black is clearly winning.} 40. Qxd4 Rc1+ 41. Kf2 Qh2 42. Nxg5+ Kg6 43. Qe4+ Bf5 {[%mdl 64] ( -> ...Qg1+). Skewer} 44. Qxh4 Rc2+ {[%mdl 64] Skewer, Double Attack} 45. Ke3 Qg1+ 46. Kf4 Qc1+ {[%mdl 64] Skewer, Double Attack} 47. Kg3 {[#]} Qe1+ $1 48. Kh2 Qxh4 49. Rxh4 Kxg5 50. Rb4 Rxb2 51. d4 Bd3 {aiming for ...Bf1.} 52. d5 Bf1 {Weighted Error Value: White=0.45/Black=0.09 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.1"]
[White "Murzin, Volodar"]
[Black "Shuvalova, Polina"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2519"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,81,30,31,22,23,27,47,22,23,40,34,29,119,100,111,111,120,120,116,117,125,71,99,97,154,158,139,152,243,239,387,427,533,382,318,69,66,56,58,65,250,162,520,503,661,653,712,639,1048,1058,965,949,4405,3999,1674,729,1932,1324,1161,603,553,518]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Rb8 9. axb5 axb5 10. c3 {10.Nc3 is not played anymore.} d6 11. d4 $1 {11.d4 is better than 11.h3.} exd4 12. cxd4 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} d5 13. e5 Ne4 {[#]} 14. Be3 $146 {White is slightly better.} ({Predecessor:} 14. Nc3 Nxc3 15. bxc3 Be6 16. Qd3 Qd7 17. Ng5 Bf5 18. Qf3 h6 19. Nh3 Be4 20. Rxe4 dxe4 21. Qxe4 {1-0 (30) Ochsner,B (2458)-Thybo,J (2479) Odense 2017}) 14... Bf5 15. Nfd2 {[%cal Bf3d2,Bd2f1,Bf1g3][%mdl 32]} Qd7 16. Nf1 h6 (16... h5 $11 {keeps the balance.}) 17. f3 $1 $16 Ng5 18. Nc3 Nb4 19. Ng3 Bh7 20. f4 $1 Ne4 21. Ncxe4 (21. Ngxe4 $142 Bxe4 22. Nxe4 dxe4 23. Bc2) 21... dxe4 22. Rf1 Nd5 ({Black should play} 22... Nd3) 23. Bxd5 Qxd5 24. Rc1 Rbc8 (24... f5 $16) 25. f5 $18 {Threatens to win with f6.} Rfd8 (25... f6 {might work better.} 26. e6 Kh8) 26. f6 gxf6 27. exf6 Bf8 28. Kh1 $2 ({White should try} 28. Qg4+ $18 Bg6 29. Nf5) 28... Bg6 $1 $14 29. Qg4 {[%cal Oc1c5] White is more active.} Kh7 30. Nf5 {[%cal Oc1c5]} c5 $2 {This costs Black the game.} (30... Qe6 $14) 31. dxc5 {Strongly threatening Ne7.} Rc6 $2 (31... Qe6) 32. Ne7 $18 {White is clearly winning.} Bxe7 33. fxe7 Re8 34. Rcd1 Qh5 35. Qxh5 Bxh5 36. Rd6 Rxd6 37. cxd6 {White threatens d7 and mate.} Bg4 {[#]} 38. Rxf7+ (38. Rd1 $142 $3 {[%mdl 512]} Kg7 {[#]} (38... Bd7 39. Rc1) 39. d7 $1 {[%mdl 512]} Bxd7 40. Rxd7) 38... Kg6 39. Rf4 Bd7 40. Rxe4 Ra8 41. h3 {Weighted Error Value: White=0.49/Black=0.58} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.2"]
[White "Van Foreest, Lucas"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2530"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,60,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,5,8,9,9,7,7,7,7,5,4,5,8,6,8,0,7,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 {[%cal Bg1f3,Bf3e5,Be5c6][%mdl 32]} d5 {[%cal Bd7d5,Bd5c4][%mdl 32]} 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Ne5 Bd7 8. Na3 cxd4 9. Naxc4 Be7 {The position is equal. 9...Bc5 is not played anymore.} 10. Qb3 {E04: Open Catalan: 5 Nf3.} Qc7 11. Bf4 Nh5 {[%cal Bf6h5,Bh5f4,Bf4g2][%mdl 32]} 12. Nxc6 Nxf4 13. Nxe7 {Pair of Knights!} Nxg2 14. Rac1 {14.Rfd1 is the recent fashion.} Qc5 {Inhibits Qb4.} 15. Qxb7 Kxe7 16. Qxg2 {[#]} Bc6 $146 ({Predecessor:} 16... Rac8 17. Qe4 Bc6 18. Qg4 g6 19. Qf4 Qd5 20. f3 g5 21. Qd2 Bb5 22. Na3 Ba6 23. Rfd1 Rxc1 24. Rxc1 Rd8 25. Nc2 Ke8 26. Nb4 Qa5 27. a3 d3 28. exd3 {½-½ (28) Gupta,A (2179)-Ramos,F (2060) ICCF email 2018}) 17. Qh3 {[%cal Oc4e3]} Qd5 {[%csl Gc6][%cal Rd5h1] [#]} 18. f3 Bb5 19. b3 Rac8 20. Rfd1 Bxc4 21. bxc4 Rxc4 22. Rxc4 Qxc4 $11 {[%mdl 4096] Endgame KQR-KQR} 23. Qh4+ f6 24. Qxd4 Qxd4+ 25. Rxd4 {KR-KR} a5 26. Ra4 Ra8 27. Kf2 Kd6 28. Ke3 Kc5 29. Kd3 Rd8+ 30. Kc3 Kb5 {A balanced but interesting game.  Weighted Error Value: White=0.01 (flawless) /Black=0.00 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.3"]
[White "Nguyen, Thai Dai Van"]
[Black "Bjerre, Jonas Buhl"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2609"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,99,22,17,0,0,0,0,-7,0,-1,17,20,16,16,18,16,15,12,16,12,13,16,11,7,18,0,16,0,0,0,0,0,0,0,0,0,16,16,22,31,48,22,57,55,63,63,63,63,63,63,63,63,63,63,70,70,70,71,165,130,231,226,275,271,347,358,349,327,347,335,369,229,235,230,487,471,459,418,535,531,474,502,470,469,560,564,552,543,608,479,587,564]} 1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. e3 e5 5. d4 e4 {[#]} 6. d5 $1 {A34: Symmetrical English: 2 Nc3, lines with ...d5.} exf3 7. dxc6 dxc6 {White should prevent ...Qxd1+.} 8. Qxd8+ {The position is equal.} Kxd8 9. gxf3 g6 {outshines the older 9...Kc7.} 10. b3 Bg7 {[%cal Of6e4]} 11. Bb2 b6 {[#]} 12. a4 $1 $146 {[%mdl 8] An important novelty.} ({Predecessor:} 12. Ne2 Nh5 13. O-O-O+ Kc7 14. Bxg7 Nxg7 15. Nf4 a5 16. a4 Bd7 17. h4 h5 18. Be2 {½-½ (46) Howell,D (2648)-Bjerre,J (2569) Terme Catez 2021}) 12... a5 13. O-O-O+ Kc7 14. Ne4 Nh5 15. Ba3 Bd7 16. Kc2 Rad8 17. Bd3 Nf6 18. Ng3 Bh3 19. Rhg1 {To avoid Bg2} ({Of course not} 19. Bb2 Bg2 20. Rhe1 (20. Be5+ Kc8 $17) 20... Bxf3 $17) 19... Rd7 20. Bb2 Rhd8 21. Be5+ Kc8 22. Be2 Nh5 23. Rxd7 Rxd7 24. f4 Bxe5 25. fxe5 Ng7 26. Kc3 Re7 27. f4 Ne8 28. Ne4 {To avoid f6} Bf5 29. Ng5 {And now e4 would win. White is more active.} h6 30. Nf3 Ng7 31. Bd3 {aiming for Bxf5+.} Bd7 32. e4 {[%cal Of4f5,Be3e4,Be4f5][%mdl 32] Black is on the road to losing.} Nh5 33. f5 Be8 (33... Nf4 $16 {keeps fighting.}) 34. Kd2 Rd7 (34... gxf5 $16 35. exf5 f6) 35. Ke3 $18 Kd8 36. Be2 gxf5 37. exf5 f6 38. e6 Rg7 39. Rd1+ Ke7 40. Bf1 Rg8 41. Bh3 Rg7 $2 (41... Ng7 42. Rg1 Kf8) 42. Nd2 Ng3 {[%cal Og7g5]} 43. Kf2 Nh5 44. Kf3 {Inhibits Nf4. White is clearly winning.} Rg8 45. Ne4 Ng7 {[%cal Og7f5] [#] ...Nxf5! is the strong threat.} 46. Rg1 Bh5+ 47. Kf2 Be8 48. Bf1 Bh5 49. Bd3 Be8 50. Be2 {Weighted Error Value: White=0.08 (flawless) /Black=0.25 (precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.4"]
[White "Warmerdam, Max"]
[Black "Erigaisi Arjun"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2599"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,50,0,0,0,0,0,33,30,33,32,16,32,66,67,62,70,66,75,80,-448,-450,-402,-391,-397,-383,-509,-439,-556,-572,-572,-566,-804,-830,-806,-805,-914,-905,-866,-834]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 {[%cal Bg1f3,Bf3d2,Bd2c4][%mdl 32]} Be7 5. d4 O-O 6. O-O dxc4 7. Qc2 b5 8. a4 {E05: Open Catalan: 5 Nf3 Be7.} b4 9. Nfd2 Nd5 $1 {[%mdl 4] outshines the older 9...c6.} 10. Nxc4 {White is slightly better.} c5 11. dxc5 Bxc5 12. e4 Nb6 13. Ncd2 $1 N8d7 {aiming for ...Ba6.} 14. a5 Ba6 {[%cal Oa8c8] Threatens to win with ...Rc8!} 15. axb6 Rc8 {[%cal Oc5f2] [#] Hoping for ...Bxf2+!} 16. Rxa6 $146 {[%mdl 8192] [#] White does not recover from this.} (16. Qd1 $1 $16 {is forced if you want to stay better.} Qxb6 17. Nb3) ({Predecessor:} 16. Qd1 Qxb6 17. Rxa6 Qxa6 18. Nb3 Qa2 19. N1d2 Rfd8 20. Qe2 a5 21. e5 a4 22. Nxc5 Nxc5 23. Ne4 Nxe4 24. Bxe4 Qc4 25. Qf3 Qd4 26. Bc6 a3 27. bxa3 bxa3 {½-½ (27) Sorokin,A (2521)-Hakobyan,A (2598) Las Vegas 2021}) 16... Bxf2+ $1 $19 {[%mdl 576] Discovered Attack} 17. Kxf2 Rxc2 18. bxa7 Nb6 {White must now prevent ...Qd4+. Really sharp!} 19. Kg1 {[#]} Qc8 $1 {Black is clearly winning.} 20. Rxb6 {Strongly threatening Nb3.} (20. Ra5 Rxc1) 20... Qc5+ 21. Kh1 {Ra6 is the strong threat.} Qxb6 22. Nf3 Qxa7 23. Bf4 Rxb2 24. Nbd2 Qa2 25. Rc1 Rd8 {Weighted Error Value: White=0.75/Black=0.08 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.5"]
[White "Maurizzi, Marc`Andria"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2496"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,56,20,22,16,25,8,9,10,20,0,6,0,33,-25,12,11,37,39,34,39,55,14,14,17,0,8,8,0,29,16,19,20,31,0,0,0,22,0,0,0,18,0,0,0,18]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8g6][%mdl 32] 7...Nbd7 scores better than 7...0-0.} 8. h3 {D35: Queen's Gambit Declined: Exchange Variation.} O-O {[%cal Of6e4]} 9. Bf4 Re8 10. Nf3 Nf8 {[#]} 11. Ne5 $146 ({Predecessor:} 11. Qc2 Ng6 12. Bh2 Bd6 13. Bxd6 Qxd6 14. O-O-O b5 15. Kb1 a5 16. Rc1 Bd7 17. g4 Qe7 18. Nd2 Nh4 19. g5 Nh5 20. Bxh7+ Kh8 21. Bd3 Qxg5 22. Rcg1 Qf6 {0-1 (52) Aczel,G (2560)-Prohaszka,P (2570) Ajka 2021}) 11... Ng6 12. Bg3 Bb4 13. Qb3 ({White should try} 13. O-O $14) 13... Qe7 14. O-O Be6 (14... Nh5 $5 {[%cal Rh5g3]}) 15. Qc2 c5 16. dxc5 {[%cal Re5g6]} ({Reject} 16. Bxg6 hxg6 17. Bh4 Rac8 $11) 16... Bxc5 17. Nxg6 (17. Nf3 $14) 17... hxg6 $11 18. Na4 Bb4 19. a3 Rac8 20. Qd1 Bd6 21. Bxd6 Qxd6 22. Nc3 Qb6 23. Na4 Qd6 {The position is equal.} 24. Nc3 Qb6 25. Na4 Qd6 26. Nc3 Qb6 27. Na4 Qd6 {[%cal Oe6h3]} 28. Nc3 Qb6 {Weighted Error Value: White=0.12 (very precise) /Black=0.08 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.6"]
[White "Dardha, Daniel"]
[Black "Vogel, Roven"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2533"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,123,7,9,15,15,9,7,6,1,18,17,20,20,20,21,18,18,21,26,22,22,21,17,18,14,20,15,16,17,21,4,10,0,0,0,0,0,0,0,0,0,10,0,10,4,11,10,22,0,11,11,27,19,13,12,24,8,2,16,37,6,30,0,0,0,21,11,12,18,11,12,7,7,7,7,7,8,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bxf3 6. Qxf3 e6 7. Nc3 Bb4 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} 8. Bd2 O-O 9. Bd3 Nbd7 {The position is equal.} 10. a3 Bxc3 11. Bxc3 Re8 {[%cal Bf8e8,Be8e5,Be5d5][%mdl 32]} 12. Rd1 e5 13. dxe5 Nxe5 {[#]} 14. Qf5 $146 ({Predecessor:} 14. Qg3 d4 15. Bb1 c5 16. O-O Nh5 17. Qh2 Nf3+ 18. gxf3 Qg5+ 19. Qg2 Qxg2+ 20. Kxg2 dxc3 21. bxc3 {½-½ (72) Hanley,C (2313)-Orr,M (2328) Birmingham 2002}) 14... Qe7 15. Qxe5 Qxe5 16. Bxe5 Rxe5 17. cxd5 Rxd5 18. Ke2 Kf8 19. Bb1 h6 20. Rxd5 Nxd5 $11 {[%mdl 4096] Endgame KRB-KRN} 21. g4 a5 22. Bd3 Re8 23. Kd2 Nf6 24. Rc1 Rd8 25. Ke2 Ke7 26. f3 Nd5 27. Bc4 Nc7 28. h4 Ne8 29. Bd3 Nc7 30. Bc4 Ne8 31. Bb3 Rd6 32. Rc5 b6 33. Rf5 f6 34. g5 hxg5 35. hxg5 fxg5 36. Rxg5 Rh6 37. Rg2 {Inhibits Rh2.} Kf6 38. f4 Rh5 39. Bc2 g5 40. Be4 gxf4 $1 41. exf4 Nd6 42. Bxc6 Rc5 43. Ba8 Rc4 44. Kf3 Rd4 {To avoid Rd2} 45. Re2 Rd3+ 46. Re3 Rxe3+ 47. Kxe3 {[#] Threatens to win with Kd4. KB-KN} Nc4+ 48. Kd4 Nxb2 49. Bc6 Kf5 50. Kc3 Nd1+ 51. Kd2 Nf2 52. Ke2 Ng4 53. Kf3 Nf6 {To avoid Bd7+} 54. a4 Ke6 55. Ke3 Kd6 56. Bf3 Kc5 57. f5 b5 58. axb5 a4 {[#] Hoping for ...a3.} 59. Kd3 $2 {[%mdl 8192]} (59. b6 $11 Kxb6 60. Kd4) 59... a3 60. Kc3 {Strongly threatening Bc6.} Kxb5 (60... a2 $5 61. Kb2 Kxb5 $11) 61. Kb3 Kc5 62. Kxa3 {[%mdl 32768] Weighted Error Value: White=0.04 (flawless) /Black=0.02 (flawless) . An unexpected result.} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.16"]
[Round "2.7"]
[White "L'Ami, Erwin"]
[Black "Zhu, Jiner"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2622"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,83,15,12,9,10,9,10,-9,-8,-6,0,-5,6,3,33,20,21,33,26,0,0,8,18,18,27,27,33,18,21,18,18,-14,0,0,0,-8,-8,-13,-12,-9,0,0,0,0,0,0,0,0,0,0,-4,-5,0,0,0,0,0,0,0,0,156,119,131,113,217,216,505,484,612,604,626,604,1104,597]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. d3 Nge7 7. Bg5 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} h6 8. Bxe7 Nxe7 9. Nc3 {[#] The position is equal.} a6 $146 ({Predecessor:} 9... O-O 10. Bc4 d6 11. Nd5 Nc6 12. a3 Kh7 13. b4 f5 14. bxc5 dxc5 15. exf5 gxf5 {1-0 (38) Guerra Bastida,D (2367)-Moreno Ruiz,J (2471) Linares 2013}) 10. Bc4 b5 11. Bb3 Bb7 12. a4 Qb6 (12... b4 $5 {[%cal Rb4c3]} 13. Nd5 O-O $11) 13. axb5 axb5 14. Rxa8+ Bxa8 15. Qa1 O-O 16. Qa2 {[%cal Ob3f7]} Bb7 17. Nd5 Nxd5 18. Bxd5 d6 {[%cal Bd7d6,Bd6d5][%mdl 32]} 19. Bxb7 Qxb7 20. Ra1 c4 21. Nd2 ({Of course not} 21. dxc4 Qxe4 22. cxb5 Qxc2 $17) 21... d5 22. dxc4 dxc4 23. Qa3 Rd8 24. Qe3 Bf8 25. Nf3 Qc7 26. g3 Rd7 27. Kg2 Kg7 28. Qe2 Bc5 29. Rd1 Rxd1 30. Qxd1 Qc6 31. Qe2 Qd6 32. b3 cxb3 $1 33. cxb3 b4 34. Qc4 Bb6 35. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} f6 $2 (35... h5 $11) 36. h5 $1 $16 {Black must now prevent hxg6.} Qc5 {[#]} 37. Qe2 g5 {[#]} (37... f5 $16 {was called for.}) 38. Nh2 $1 $18 f5 $2 (38... Qc8 39. Qb5 Bc5) 39. exf5 {White is clearly winning.} Qd5+ 40. f3 Qd4 41. Kh3 Qa1 42. Qc4 {Weighted Error Value: White=0.03 (flawless) /Black=0.30} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.1"]
[White "Vogel, Roven"]
[Black "Murzin, Volodar"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2452"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,53,29,32,28,21,22,29,17,24,21,32,19,37,13,20,16,15,13,11,19,12,16,14,0,1,0,2,8,17,15,17,8,6,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 e6 5. Bf4 Bd6 6. Bxd6 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3.} Qxd6 7. e3 Ne7 8. Bd3 {White has an edge.} Nbc6 9. Rc1 {[#]} Bd7 $146 ({Predecessor:} 9... O-O 10. Nf3 h6 11. O-O Bd7 12. Na4 Rfc8 13. Nc5 Rc7 14. Qb3 Nd8 15. Rc3 Be8 {½-½ (59) Le,Q (2703)-Wang,Y (2723) Beijing 2013}) 10. Bb1 O-O 11. Qd3 {[%csl Gb1][%cal Rd3h7] [#]} Ng6 {The position is equal.} 12. Nge2 Rfc8 13. O-O Be8 14. Qd2 Na5 15. b3 {Inhibits Nc4.} Nc6 16. Na4 Nce7 17. Nec3 Bxa4 18. Nxa4 Rxc1 19. Rxc1 Rc8 20. Rxc8+ Nxc8 21. Bxg6 hxg6 22. Qc1 Qd8 23. h3 Ne7 24. Nc5 b6 25. Nd3 g5 26. a4 a5 27. b4 {An interesting draw.  Weighted Error Value: White=0.03 (flawless) /Black=0.03 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.2"]
[White "Erigaisi Arjun"]
[Black "Dardha, Daniel"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "2629"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 29,83,0,37,43,43,38,41,41,47,36,51,37,39,36,64,37,43,37,47,27,31,34,38,0,0,16,16,0,20,0,68,44,22,33,297,288,499,500,532,525,514,488,478,483,467,454,488,518,531,511,522,533,527,527,487,479]} 1. e4 {Chekhov,V} c5 2. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5,Bb5a3,Ba3c2][%mdl 32]} Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 Be6 9. Nc2 Bg5 10. Be2 Bxc1 11. Rxc1 Nf6 12. O-O O-O 13. Qd2 Qe7 14. Nd5 Qd8 15. Nc3 Qb6 16. Rfd1 {B32: Sicilian: Löwenthal and Kalashnikov Variations.} Rac8 (16... Qxb2 $2 17. Rb1 Qxb1 18. Rxb1 $18) 17. b3 Rfd8 18. h3 {White is slightly better.} Qa7 19. Bf1 {[#]} Ne7 $146 ({Predecessor (2):} 19... Qb8 20. Re1 Qa7 21. Rcd1 Ne7 22. Re3 Rd7 23. Rd3 Ne8 24. Kh2 Rdc7 25. g3 Qc5 {1-0 (61) Timoshenko,G (2515)-Kiselev,S (2510) Bucharest 1993 CBM 034 [Chekhov,V]}) 20. Ne3 Qb8 21. Qd3 h5 22. h4 Qa7 23. Be2 Kf8 24. Bf3 g6 25. Qd2 Kg7 26. Ne2 b5 27. Ng3 {[%cal Oe3f5]} bxc4 28. bxc4 {[%cal Oe3f5]} Kh7 29. Rc3 Rc6 {[#]} (29... Neg8 $11) 30. Nef5 $1 {White wants to mate with Qh6+.} Neg8 {Inhibits Qh6+.} ({Weaker is} 30... gxf5 31. exf5 Rxc4 32. fxe6 Rxc3 33. Qxc3 fxe6 34. Qd2 $16 (34. Nxh5 Nxh5 35. Bxh5 Nf5 $14)) 31. Qg5 {[%cal Rg3h5] aiming for Nxh5!} Bxf5 $4 {[%mdl 8192] A mistake that costs the game.} ({Black should try} 31... Qc7 $14) 32. exf5 $18 Rcc8 $2 (32... d5 {was necessary.} 33. Rcc1 (33. fxg6+ fxg6 34. Rcc1 Nh6 $18) 33... Rdc8) 33. Be4 {White is clearly winning.} Nxe4 34. Nxe4 Qe7 35. Rg3 {[%cal Rf5g6]} Qxg5 36. Nxg5+ ({Not} 36. Rxg5 Rxc4 37. Rxd6 Rxd6 38. Nxd6 Rxh4 $11) 36... Kg7 37. fxg6 Nh6 38. gxf7 Rd7 39. Ne4+ Kf8 {[#]} 40. Rg8+ $1 {[%mdl 512]} Nxg8 41. fxg8=Q+ Kxg8 42. Nf6+ {Weighted Error Value: White=0.09 (flawless) /Black=0.38} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.3"]
[White "Ganguly, Surya Shekhar"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2627"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,75,14,21,9,10,0,14,3,4,0,0,0,0,-17,0,-8,0,-45,-10,-17,-8,-32,-33,-33,0,0,0,0,11,18,25,25,32,25,68,67,54,51,41,45,75,0,0,0,0,0,5,0,0,0,0,-47,-47,-48,-46,-49,-49,-45,-40,-47,-49,-49,-48,-43]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O Nbd7 8. a4 {E11: Bogo-Indian.} a5 9. Qc2 c6 10. Rc1 {The position is equal.} Ne4 11. Be1 f5 12. e3 g5 {[%cal Bg7g5,Bg5g4][%mdl 32] [#]} 13. Nfd2 $146 ({Predecessor:} 13. Nc3 Bd6 14. Na2 g4 15. Nd2 Ng5 16. b4 axb4 17. Rcb1 Nf6 18. Nxb4 Nfe4 19. Nd3 {1-0 (57) Sumets,A (2570)-Mesaros,F (2405) Germany 2020}) 13... Ndf6 14. f3 Nd6 15. Rd1 (15. c5 $11 {feels stronger.} Nf7 16. Nb3) 15... g4 16. c5 Nde8 17. f4 h5 18. Nc3 Ne4 19. Nb3 {[%cal Bd2b3,Bb3c1,Bc1d3,Bd3e5][%mdl 32]} Qc7 20. Nc1 (20. Bxe4 fxe4 21. Ne2 Ng7 $15) 20... Bd8 21. Nd3 ({Of course not} 21. Bxe4 fxe4 22. Rb1 Ng7 $15) 21... N8f6 22. Ne5 Qh7 23. Bf1 Nd7 (23... Bc7 $11) 24. Nxe4 $14 {White is more active.} fxe4 25. h3 Nxe5 26. dxe5 gxh3 {[#]} 27. Qh2 (27. Rd2 $1 $16) 27... b6 $11 28. b4 axb4 29. Bxb4 Be7 $132 {[%mdl 2048] Black is not keeping still} 30. Rdc1 $1 Qg6 31. Qxh3 Ba6 {Inhibits Be2.} 32. Ra2 (32. cxb6 $11 {was preferrable.} Bxb4 33. Rxc6) 32... Bxf1 $15 {Black is slightly better.} 33. Kxf1 Rfb8 34. cxb6 Bxb4 35. Rxc6 Qg4 36. Qxg4+ hxg4 37. Rxe6 Ra6 38. Rg6+ {Weighted Error Value: White=0.10 (very precise) /Black=0.05 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.4"]
[White "Zhu, Jiner"]
[Black "Nguyen, Thai Dai Van"]
[Result "0-1"]
[ECO "C89"]
[WhiteElo "2478"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,128,0,0,0,0,6,7,-3,0,0,27,22,36,16,23,20,17,25,33,12,30,-91,-88,-96,-73,-81,-74,-125,-123,-117,-129,-115,-107,-115,-63,-60,-62,-114,-117,-114,-118,-307,-307,-307,-307,-291,-300,-300,-300,-300,-300,-300,-300,-300,-300,-300,-300,-267,-169,-204,-73,-73,-73,-73,-73,-73,-73,-73,-73,-73,-73,-73,-73,-108,-56,-116,-116,-116,-116,-360,-351,-5273,-5273,-5273,-5273,-5273,-5273,-5273,-5273,-2033,-592,-5273,-5273,-5273,-5273,-5273,-5266,-5266,-5259,-693,-354,-354,-354,-362,-362,-5233,-5193,-5149,-5089,-5089,-4904,-29979,-29980]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. d4 exd4 10. e5 {C89: Closed Ruy Lopez: Marshall Attack.} Ne4 11. cxd4 Bf5 12. Nc3 {The position is equal.} Nxc3 13. bxc3 h6 $5 {[%mdl 4] [#] A promising side line.} 14. Nd2 $146 ({Predecessor:} 14. Be3 Na5 15. Bc2 Qd7 16. Qe2 Bxc2 17. Qxc2 Qc6 18. Reb1 Nc4 19. Bc1 a5 20. a3 {½-½ (44) Cosgun,B (1166)-Tuncer,D (1607) Konya 2017}) 14... Na5 $1 15. Bc2 (15. Qf3 $5 {[%cal Rf3f5]} Nxb3 16. axb3 $11) 15... Qd7 16. Bxf5 Qxf5 17. Nf1 Nc4 18. f4 Qd7 19. g4 (19. Ne3 $11 {remains equal.}) 19... b4 $17 20. f5 bxc3 {...c5 is the strong threat.} 21. Qf3 Rfe8 {Black is more active.} 22. Qxc3 (22. Ng3 $142) 22... c5 $1 23. Bf4 cxd4 24. Qxd4 Rac8 {Threatens to win with ...Bc5.} 25. Qd3 Bg5 (25... Nb2 $17 26. Qb3 Qa4 $1 27. Qxa4 Nxa4) 26. Bxg5 $15 hxg5 27. Qg3 (27. Qd4 $15) 27... d4 $17 {White must now prevent ...d3.} 28. Rad1 Qd5 {[%cal Rc4e5] Inhibits Re4.} 29. Ne3 $2 Qxe5 $19 (29... Nxe3 $2 30. Qxe3 Rc2 31. Qe4 Qxa2 32. Ra1 $17) 30. Nxc4 Qxg3+ 31. hxg3 {Strongly threatening Rxe8+.} Rxe1+ 32. Rxe1 {And now Nd6 would win.} Rxc4 {[%mdl 4096] Endgame KR-KR} 33. Re8+ Kh7 34. Rd8 Ra4 $1 35. a3 d3 ({Not} 35... Rxa3 $2 36. Kf2 $19) 36. Rxd3 Rxg4 37. Kg2 Ra4 38. Kh3 g6 (38... Kh6 $19 {is more deadly. aiming for ...g6.} 39. g4 f6) 39. f6 $17 g4+ $1 40. Kh4 Kh6 {[%csl Gh6][%cal Rg6g5]} 41. Rd5 {[%cal Od5h5] Prevents g5+.} Rc4 ({Reject} 41... Rxa3 42. Rh5+ gxh5 $11) 42. a4 Rc6 $1 ({Much worse is} 42... Rxa4 43. Rh5+ gxh5 $11) 43. Kxg4 Rxf6 44. Rc5 Kg7 45. a5 Rd6 (45... Kh6 $1 $17 46. Rc7 Rf5) 46. Kf4 (46. Kh3 $1 $15) 46... Rd4+ $1 47. Kf3 Ra4 48. g4 $2 (48. Kg2 $17) 48... Kf6 $1 $19 49. g5+ $2 {[#]} (49. Kg3 Ke7 50. Rc7+ Ke8 51. Kf3) 49... Ke7 $1 50. Rc7+ Ke8 51. Ra7 Rxa5 52. Kg4 Ra1 53. Kg3 a5 {[%cal Ba6a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 54. Kg4 a4 55. Kg3 a3 56. Kh2 a2 57. Ra3 Kd7 58. Ra6 Kc7 59. Ra3 Kd6 60. Ra5 Ke6 {Hoping for ...Rf1.} 61. Ra7 $2 (61. Kg2) 61... Rf1 62. Rxa2 {[#]} Kf5 $1 63. Rg2 Kf4 64. Rg3 {[#]} Rh1+ $3 {[%mdl 512] Weighted Error Value: White=0.46/Black=0.08 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.5"]
[White "Jumabayev, Rinat"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2631"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,87,0,0,0,0,0,0,0,0,0,0,0,0,-28,-16,-12,78,64,37,51,116,131,101,88,133,97,133,134,126,137,135,146,141,139,129,138,247,243,252,206,339,327,349,344,325,328,275,205,590,600,557,498,489,495,500,489,496,500,481,490,481,454,440,413,541,506,647,637,777,795,813,801,1195,827]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. g3 Nbd7 6. Bg2 dxc4 7. O-O $1 {The main line 7.0-0 scores better than 7.a4.} b5 8. e4 Bb7 9. e5 {E01: Catalan: Early deviations.} Nd5 10. Ng5 Be7 {And now ...Nxc3 would win.} 11. Qh5 $1 {[%csl Gg5,LRe6,LRf7,LRh7][%cal Rh5f7] The position is equal.} g6 12. Qh6 Bf8 {Inhibits Qg7.} 13. Qh3 $40 {[%mdl 128] White has some attack.} Be7 14. Bxd5 $5 {[%mdl 4] Exploring less charted territory.} cxd5 15. Nxb5 {[#]} Qb6 $146 (15... h6 $11) ({Predecessor:} 15... h6 16. Nf3 Ba6 17. Nc3 Nb8 18. Be3 Nc6 19. Rfb1 Kf8 20. Qf1 Rb8 21. Qd1 Kg7 {½-½ (38) Gullotto,V (2293)-Reuter,P (2324) ICCF email 2017}) 16. Nd6+ $1 $16 (16. a4 h6 $15) 16... Bxd6 17. exd6 {Black must now prevent Re1.} Qxd6 ({Black should try} 17... Qxd4 $14 18. Re1 (18. Nxe6 fxe6 19. Qxe6+ Kd8 $17) 18... Bc6) 18. Re1 $1 Nf8 19. Qh6 {Strongly threatening Qg7.} (19. Bf4 $6 Qe7 $11) 19... Nd7 20. Bf4 Qf8 {[#]} 21. Nxe6 $1 {[%mdl 512]} fxe6 22. Rxe6+ Kd8 (22... Kf7 $2 23. Rae1 Qxh6 24. Re7+ Kf6 25. Bxh6 $18) 23. Qh4+ {[%mdl 1024] White has strong compensation.} Kc8 24. Rae1 {Rd6 is the strong threat.} a5 {[#]} 25. Qh6 $1 {White is much more active. Black has bad knights.} Qd8 {[#]} (25... Kd8 $16) 26. Qg7 $1 $18 {[%cal Og7h8] Intending Qxh8! and mate.} Rf8 {[%cal Of8f4]} 27. Bd6 Ra6 (27... Rf6 $142 28. Rxf6 (28. Re8 Rxd6 29. Qxh7 a4 $11) 28... Nxf6) 28. Bxf8 Rxe6 29. Rxe6 Nxf8 30. Re7 Nd7 31. Qxh7 {Hoping for h4.} c3 $2 (31... Bc6 {is more resistant.} 32. h4 (32. Qxg6 Qxe7 33. Qxc6+ Kd8 $16) 32... a4) 32. bxc3 Bc6 33. Re6 Bb5 34. Qf7 {Threatens to win with Re8.} Qc7 35. Re8+ Kb7 36. Qxd5+ Bc6 37. Qe6 Nb6 38. Re7 Bd7 39. Qe4+ Ka7 40. Qd3 {White is clearly winning.} Qd6 41. Rg7 Qe6 42. c4 g5 43. d5 Qe5 44. Qh7 {Weighted Error Value: White=0.07 (flawless) /Black=0.38} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.6"]
[White "Shuvalova, Polina"]
[Black "L'Ami, Erwin"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2516"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,84,-23,-21,-20,-14,0,-18,-8,-23,-22,-27,-30,-12,22,0,0,0,20,-71,18,16,24,41,150,145,147,159,318,-131,-119,-92,16,35,36,54,21,-427,-412,-556,-538,-515,-499,-555,-393,-519,-235,-737,-719,-712,-712,-703,-697,-666,-662,-1833,-1842,-29980,-1255,-1237,-1177,-29977,-29978,-29985,-849,-29980,-29981,-29981,-29982,-29982,-29976,-29978,-29975,-29981,-29981]} 1. d4 d5 {[%cal Bd7d5,Bd5c4][%mdl 32]} 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e4 b5 6. Be2 Bb7 7. O-O {[%cal Od4d5]} Nf6 {Prevents d5. D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} 8. b3 cxb3 9. Qxb3 {[%cal Od4d5]} Be7 {The position is equal.} 10. e5 Nd5 {[#]} 11. Nxd5 $146 ({Predecessor:} 11. Ne4 h6 12. Bd2 a5 13. Ne1 Qb6 14. Nc2 Nd7 15. Qg3 g6 16. Rab1 Ba6 17. Rfc1 b4 18. Bxa6 Qxa6 19. Ne3 Nxe3 20. Qxe3 {½-½ (20) Stupak,K (2518)-Zarubitski,V (2432) Moscow 2020}) 11... Qxd5 12. Qb1 Nd7 13. a4 b4 14. a5 Rb8 15. Bg5 (15. Be3 $11 {remains equal.}) 15... Bxg5 ({Black should play} 15... c5 $1 $17 16. Bxe7 (16. a6 Ba8 $17) 16... Kxe7 17. dxc5 Rhc8 18. Qxb4 Qxc5 19. Qh4+ Kf8) 16. Nxg5 $11 Qxd4 17. Nxf7 Kxf7 ({Black should try} 17... O-O $14 18. Rd1 (18. Ng5 Rf5 $11) 18... Qh4 $1 19. Rxd7 Rxf7) 18. Rd1 $16 Qxe5 19. Rxd7+ Kf6 $2 {[#]} (19... Kf8 $16 {is a better defense.}) 20. Qd1 $2 (20. Qxb4 $1 $18 {Intending Qe7+ and mate.} Qxa1+ 21. Bd1) 20... c5 $17 21. Bf3 {[#] To avoid Bd5} ({But not} 21. a6 $2 Bc6 22. Rd3 Be4 $19) 21... Bxf3 (21... Ba6 $1 $17 {[%cal Ra6b5] White must now prevent ...Bb5.} 22. Bh5 g6 23. Qf3+ Qf5) 22. Qxf3+ $11 Kg5 {[%cal Bf6g5,Bg5h6,Bh6g6][%mdl 32]} 23. h4+ {[%mdl 1024] White has compensation.} Kh6 24. g4 $2 {[%mdl 8192]} Rhf8 $19 (24... Qxa1+ {gets mated.} 25. Kg2 Qf6 26. g5+) 25. g5+ Kg6 26. Qd3+ Qf5 27. Qg3 {[%cal Oh4h5]} Qf4 {And now ...Qxg3+ would win.} 28. Qg2 Qf3 (28... b3 $142 29. h5+ Kxh5 30. Rxg7 b2 31. Qh3+ Qh4 32. Qxh4+ Kxh4) 29. Qh2 (29. h5+ Kxh5 30. Rxg7) 29... Rf4 {Hoping for ...Kh5.} 30. Re1 Rbf8 {...Kh5 is the strong threat.} 31. h5+ Kxg5 {aiming for ...Kh6.} 32. Rxg7+ Kh6 33. Rg2 Re4 {[%cal Re4e1]} 34. Rc1 Rg4 (34... Rd8 $142 35. Rf1 Rd1 36. Rg3 Rxf1+ 37. Kxf1 Qd1+ 38. Kg2 b3 39. Qh3 b2 40. Rb3 Rg4+ 41. Qxg4 Qxg4+ 42. Kh2 Qxh5+ 43. Kg3 c4 44. Rxb2 Qe5+ 45. f4 Qxb2 46. f5 c3 47. f6 c2 48. f7 Qg7+ 49. Kf4 c1=Q+ 50. Kf3 Qgc3+ 51. Kg2 Q1d2+ 52. Kh1 Qcc1#) 35. Rxg4 Qxg4+ {[%mdl 4096] Endgame KQR-KQR} 36. Kf1 c4 {[%cal Bc5c4,Bc4c3][%mdl 32]} 37. Qd6 Qf4 (37... Qh3+ $142 38. Ke1 Qh1+ 39. Ke2 Qf3+ 40. Ke1 Qxf2+ 41. Kd1 Qf3+ 42. Kd2 Qg2+ 43. Ke3 Qf2+ 44. Ke4 Qe2+ 45. Kd4 Qd2+ 46. Kc5 Rc8+ 47. Qc6 Qd5+ 48. Kxb4 Qxc6 49. Rf1 Qd6+ 50. Kc3 Qd3+ 51. Kb2 Rb8+ 52. Ka2 Qd2+ 53. Ka3 Qxa5#) 38. Qxe6+ Rf6 {[%csl Gf6][%cal Rf4f2] Black mates.} 39. Qe1 c3 40. Rc2 Qc4+ 41. Kg1 Rf5 42. f4 Qxf4 {Never resign too early!  Weighted Error Value: White=0.91/Black=0.51} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.17"]
[Round "3.7"]
[White "Bjerre, Jonas Buhl"]
[Black "Maurizzi, Marc`Andria"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2586"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,47,30,20,21,25,25,31,-6,-4,0,0,-5,0,0,0,0,0,0,14,8,35,29,25,28,27,29,28,14,107,107,112,106,104,124,142,143,142,143,974,961]} 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Nc3 {[#]} c6 $146 ({Predecessor:} 4... Nf6 5. a4 a5 6. Bg2 Bf5 7. Nh4 e6 8. Nxf5 exf5 9. Qd3 Qd7 10. O-O Bb4 11. Bh3 {1-0 (60) Svane,R (2628)-Vachier Lagrave,M (2766) Chess.com INT 2021}) 5. a4 a5 6. e4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} dxe4 7. Nxe4 Nf6 8. Nc5 {White is slightly better.} e5 $1 9. Qe2 {[%cal Od4e5]} Bxc5 10. dxc5 Nbd7 11. Nxe5 O-O {[%cal Bh8f8,Bf8e8,Be8e5][%mdl 32] aiming for ...Nxe5.} 12. Nxd7 Bxd7 13. Bg2 Re8 14. Be3 Ng4 (14... Bf5 {keeps more tension.} 15. O-O Ng4 16. Ra3 Qf6 17. Rb3 Rab8) 15. O-O-O Nxe3 16. fxe3 {[%cal Og2h3,Bf2e3,Be3e4][%mdl 32]} Qc7 17. Rd6 Re5 $1 18. Rhd1 Bf5 (18... Be8 $1 $11) 19. e4 $16 {And now Qh5 would win.} Rae8 20. Qh5 g6 21. Qh4 $36 {[%mdl 2048] Black is under strong pressure. White is more active.} Be6 {[#]} 22. Qf6 $1 ({Don't take} 22. Rd8 $6 Rxd8 23. Qxd8+ (23. Rxd8+ Kg7 $11) 23... Qxd8 24. Rxd8+ Kg7 $14) 22... Bg4 {[#]} 23. Bf3 Bxf3 {[%mdl 8192]} (23... R5e6 $16 24. Rxe6 Bxe6) 24. Rd7 {[%mdl 64] Skewer, Double Attack.  Weighted Error Value: White=0.03 (flawless) /Black=0.12 (very precise)} ({Weaker is} 24. Qxf3 Qe7 $16) 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.1"]
[White "Murzin, Volodar"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C93"]
[WhiteElo "2519"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,87,10,26,0,13,0,14,0,0,-19,-17,-43,-24,-24,-26,-22,-21,-25,-19,-19,-17,-48,-21,-21,-6,-24,-16,-16,-16,-17,-27,-18,0,0,0,0,0,0,0,0,0,0,1,2,6,6,14,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 {Marin,M} e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. a4 Bd7 9. c3 O-O 10. h3 h6 11. d4 Re8 12. Nbd2 Bf8 13. dxe5 {C93: Closed Ruy Lopez: Smyslov Variation.} Nxe5 14. Nxe5 dxe5 {[#]} 15. Nf3 $146 ({Predecessor:} 15. Nf1 c5 16. Bc2 Bc6 17. Qxd8 Rexd8 18. f3 c4 19. Be3 Nd7 20. Red1 Rdb8 21. axb5 axb5 {½-½ (72) Cori,J (2418)-Marin,M (2564) Porto Mannu 2009 CBM 130 Extra [Marin,M]}) 15... c5 {[%cal Bc7c5,Bc5c4][%mdl 32]} 16. Bc2 c4 17. Be3 Qc7 18. Nd2 Bc5 19. Qf3 {[%cal Oe3h6]} Bxe3 20. Qxe3 Be6 21. axb5 axb5 22. Nf3 Nd7 23. Nh4 Qc5 24. Qg3 Nf6 25. Rxa8 Rxa8 26. Nf5 Bxf5 27. exf5 Re8 {The position is equal.} 28. Qe3 Qxe3 29. Rxe3 $11 {[%mdl 4096] Endgame KRB-KRN} Kf8 30. Be4 Rc8 {Inhibits Bc6.} 31. Kf1 Ne8 32. Bf3 Rc5 33. g4 Nd6 34. Re1 Ke7 35. Kg2 g6 36. fxg6 fxg6 37. Kf1 g5 38. Ra1 e4 39. Bg2 Kf6 40. Ra7 Rd5 {Threatens to win with ...Rd2.} 41. Ke1 {To avoid Rd2} Rd3 42. Bf1 Rd5 43. Bg2 Rd3 44. Bf1 {An even fight not without its subleties.  Weighted Error Value: White=0.05 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.2"]
[White "Vogel, Roven"]
[Black "Erigaisi Arjun"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2452"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,60,32,41,32,46,41,44,47,50,55,46,46,70,31,29,0,0,-8,10,0,72,0,0,0,0,0,0,-35,-52,-269,-257,-323,-306,-503,-496,-454,-458,-601,-587,-573,-562,-809,-695,-787,-779,-772,-763]} 1. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Bg4 8. d5 a5 9. Ne1 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} Bd7 10. Nd3 Na6 11. Bg5 {White is slightly better.} h6 12. Be3 b6 {[#]} 13. Qd2 $146 ({Predecessor:} 13. a3 Nc5 14. f3 Ne8 15. b4 axb4 16. axb4 Rxa1 17. Qxa1 Nb3 18. Qb2 Nd4 19. c5 f5 20. Rd1 {1-0 (42) Antonova,N (2011)-Faqeeh,A (1599) Al Ain 2015}) 13... Kh7 14. f4 exf4 15. Rxf4 Qe7 $1 {Prevents e5.} 16. Raf1 {[%cal Oe4e5]} g5 17. R4f2 {[%cal Oe4e5] Strongly threatening e5!} Rae8 (17... Ng4 $1 $11 {keeps the balance.}) 18. Bf3 (18. e5 $1 $16 dxe5 19. d6) 18... Ng4 $11 19. Bxg4 Bxg4 {[%cal Bd7g4,Bg4h5,Bh5g6][%mdl 32]} 20. h3 Bh5 {[%cal Of7f5]} 21. e5 Bg6 {Prevents Ne4.} 22. Rf5 {[#] Loses the game.} Nb4 $1 $19 ({Not} 22... dxe5 23. Ne4 $17) (22... Bxf5 23. Rxf5 dxe5 24. Ne4 $17) 23. Nxb4 axb4 24. Ne4 (24. Nb5 {was necessary.} Bxf5 25. Rxf5) 24... Bxf5 {Black is clearly winning.} 25. Rxf5 Bxe5 26. Qc2 {[%cal Oe4d6]} Kg8 27. Nf2 Bg7 28. Ng4 Qe4 29. Qf2 h5 {[%cal Bh6h5,Bh5g4][%mdl 32]} 30. Rxg5 hxg4 {Weighted Error Value: White=0.63/Black=0.12 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.3"]
[White "Nguyen, Thai Dai Van"]
[Black "Shuvalova, Polina"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2609"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,31,0,15,16,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c3 {[%cal Bc2c3,Bc3c4][%mdl 32]} c6 {The position is equal.} 7. a4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} a5 8. Bf4 {[#]} Qb6 $146 ({Predecessor:} 8... h6 9. Nbd2 Nbd7 10. Ne5 g5 11. Nxd7 Nxd7 12. Be3 f5 13. f4 g4 14. Nb3 Nf6 {1-0 (53) Banusz,T (2591)-Kantor,G (2575) Budapest 2021}) 9. Nbd2 Qxb2 10. Rb1 Qa3 (10... Qxc3 $2 11. Rb3 Ne4 12. e3 $18) 11. c4 Na6 12. Ra1 Qb2 13. Rb1 Qa3 14. Ra1 Qb2 15. Rb1 Qa3 16. Ra1 {Not much happened in this game.  Weighted Error Value: White=0.02 (flawless) /Black=0.01 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.4"]
[White "Warmerdam, Max"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2599"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,83,15,23,10,52,40,61,59,66,49,54,54,52,42,57,45,56,41,63,64,95,98,86,93,81,88,97,96,121,102,109,108,94,93,95,93,101,96,113,78,88,0,123,112,129,104,173,178,179,59,60,52,67,52,52,37,52,52,104,104,104,104,141,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 Nc6 6. Nf3 Be6 7. c5 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bg4 (7... g6 $11) 8. Be3 {[#]} Bxf3 $146 ({Predecessor:} 8... Qd7 9. Bd3 g6 10. O-O Bg7 11. h3 Bxf3 12. Qxf3 O-O 13. Rab1 Rad8 14. Rfd1 Ne8 {0-1 (81) Matonoha,C (2049)-Duczynski,M (2150) Czech Republic 2013}) 9. Qxf3 {White is slightly better.} ({Reject} 9. gxf3 e6 $11) 9... g6 10. Bb5 Bg7 11. O-O O-O 12. Rfd1 Qd7 13. Rab1 Rfd8 14. h3 a6 15. Ba4 Qf5 16. Qxf5 gxf5 17. b4 e6 18. Ne2 Nd7 19. a3 Rac8 20. Rbc1 Nf8 21. Nf4 Ng6 22. Nh5 Bh8 23. g3 Rc7 24. Kg2 Rdc8 25. Nf4 Bf6 26. Nh5 (26. Ne2 $16) 26... Be7 (26... Bh8 $1 $11 {keeps the balance.}) 27. h4 Na7 28. Nf4 {White is more active.} Bf6 {[#]} (28... Nc6 $16) 29. Nxg6 $1 $18 fxg6 30. Rd3 (30. Bf4 $18) 30... Nc6 $14 31. Bf4 Rg7 32. Re1 Kf7 ({Weaker is} 32... Nxd4 33. Be5 Bxe5 34. Rxe5 $16) 33. Bg5 Rgg8 34. Be3 g5 {[#]} (34... Rh8 $14) 35. hxg5 $1 $16 Bxg5 36. Rh1 Bxe3 37. Rxe3 ({White should try} 37. Bxc6 $16 bxc6 38. Rxe3) 37... Nxd4 $11 {The position is equal.} 38. Rxh7+ Rg7 39. Rh4 Rg4 40. Rh7+ Rg7 41. Rh4 Rg4 42. Rh7+ {Weighted Error Value: White=0.16 (very precise) /Black=0.21 (precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.5"]
[White "Van Foreest, Lucas"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2530"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,53,0,3,0,0,1,10,16,2,9,4,11,17,18,16,72,2,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 {[%cal Bb8c6,Bc6b4,Bb4d3][%mdl 32]} 7. Nc3 Rb8 8. e4 Be7 9. d5 exd5 10. exd5 Nb4 {[%cal Rb4d5] E04: Open Catalan: 5 Nf3.} 11. Ne5 Bf5 12. Nxc4 O-O 13. a3 Nd3 14. Be3 Re8 15. b4 Ng4 16. Ne4 {[#]} b5 $146 ({Predecessor:} 16... Nde5 17. Nxe5 Nxe5 18. Bf4 {½-½ (18) Miton,K (2545)-Jakubowski,K (2483) Warsaw 2003}) 17. Na5 (17. Qxd3 $16 {Na5 is the strong threat.} bxc4 18. Qxc4) 17... Nxe3 $11 {The position is equal.} 18. fxe3 Bxe4 (18... Qxd5 $2 19. Nf6+ $1 {[%mdl 512]} Bxf6 20. Bxd5 $18) 19. Bxe4 Ne5 20. Nc6 Nxc6 21. Bxh7+ $1 {[%mdl 64] Decoy} Kxh7 (21... Kh8 22. Bb1 (22. Qh5 Bg5 $16) 22... Bf6 23. Qh5+ Kg8 {[#]} 24. dxc6 $1 $14 (24. Ra2 $2 Ne5 $19) (24. Bh7+ Kf8 $11)) 22. Qh5+ Kg8 23. Qxf7+ Kh8 {Strongly threatening ...Ne5.} 24. Qh5+ Kg8 {[%cal Oe7f6]} 25. Qf7+ ({But not} 25. dxc6 $2 Bf6 26. Rad1 Qe7 $19) 25... Kh8 {[%cal Oe7g5] Hoping for ...Bg5!} 26. Qh5+ Kg8 {[%cal Oe7f6] Threatens to win with ...Bf6!} 27. Qf7+ {Weighted Error Value: White=0.07 (flawless) /Black=0.10 (very precise)} ({Not} 27. dxc6 $2 Bf6 28. Rad1 Qe7 $19) 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.6"]
[White "Dardha, Daniel"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2533"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,113,0,0,0,0,0,0,0,0,0,0,0,0,11,0,0,0,0,0,0,0,0,0,0,12,9,10,4,5,14,11,20,14,18,22,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 {[%cal Be2e4,Be4e5][%mdl 32]} d5 6. e5 Ne4 7. Bd3 c5 $1 {The position is equal.} 8. Nf3 {aiming for 0-0. E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 {[%cal Od5e6]} exd5 15. Be3 $1 {[%mdl 4] Black must now prevent f3. is recently more successful than 15.Bxe4.} Nxe5 16. f3 {Prevents Bg4.} (16. Bxe4 dxe4 17. Qxe4 Re8 $11) 16... Nc5 17. Bf5 Ne6 18. Rae1 Nxd4 19. Bxd4 Nc6 20. Be3 {This bishop pair is nice.} Re8 21. g4 Bxf5 22. Qxf5 Qg6 {And now ...Qxf5 would win.} 23. Qxg5 {[#]} Re5 $146 ({Predecessor:} 23... Rad8 24. Qf4 Qd3 25. Bd4 Nxd4 26. cxd4 Qg6 27. h4 Kg7 28. Re5 Rxe5 29. Qxe5+ Qf6 {½-½ (56) Perez Ponsa,F (2559)-Della Morte,G (2369) Buenos Aires 2020}) 24. Qxg6+ (24. Qf4 {feels hotter.} Rae8 25. Bf2 Re2 26. a4 Kg7 27. Rxe2 Rxe2 28. Re1) 24... fxg6 25. Bf4 Rxe1 26. Rxe1 $11 {[%mdl 4096] Endgame KRB-KRN} Kf7 27. Kf2 (27. Rb1 $5 {[%cal Rb1b7]}) 27... Re8 28. Rb1 b6 29. Rd1 Ne7 30. Bg5 Rc8 31. Re1 Ng8 32. Rd1 Nf6 33. Rd3 Rc4 34. Kg3 Ra4 35. Bxf6 Kxf6 36. Rxd5 Rxa2 {KR-KR} 37. Rd7 h6 38. h4 Ra3 39. c4 Ra4 40. Rc7 a5 41. Rc6+ Kg7 42. h5 gxh5 43. gxh5 Rb4 44. c5 bxc5 45. Rxc5 Ra4 46. Rc6 Ra1 47. f4 a4 {[%cal Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 48. Ra6 a3 49. Kg4 a2 {[#] ( -> ...Rg1+)} 50. Kf5 Kf7 51. Ra3 $1 Kg8 52. Ra7 Kh8 53. Kf6 Rf1 ({Don't play} 53... Kg8 54. f5 $16) 54. Rxa2 {[#] Strongly threatening Kg6.} Rxf4+ 55. Kg6 Rf8 {Prevents Ra8.} 56. Rg2 Rg8+ 57. Kxh6 Rxg2 {A balanced but interesting game.  Weighted Error Value: White=0.01 (flawless) /Black=0.00 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.18"]
[Round "4.7"]
[White "Maurizzi, Marc`Andria"]
[Black "Zhu, Jiner"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2496"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,110,34,16,17,0,0,14,5,18,20,19,14,26,20,23,25,0,7,3,19,9,47,12,17,16,15,0,0,0,0,-14,0,-29,-33,-20,-26,-44,-22,-16,-5,-8,-5,-252,-212,-211,-211,-450,-372,-508,-487,-437,-430,-430,-238,-583,-430,-588,-537,-822,-801,-1095,-1038,-585,-1080,-951,-894,-669,-587,-29955,-29952,-29970,-12850,-6303,-5202,-29963,-6333,-7356,-29937,-5731,-5731,-29966,-29967,-29967,-29968,-29968,-29969,-29968,-29969,-29969,-29970,-29970,-29970,-29984,-29985,-29986,-29987,-29987,-29988,-29988,-29989]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Rb1 Be7 {7...Be7 scores better than 7...cxd4. D35: Queen's Gambit Declined: Exchange Variation.} 8. Nf3 O-O 9. Bc4 a6 {The position is equal.} 10. a4 {Prevents b5.} Qc7 11. Bd3 cxd4 12. cxd4 Nc6 {[%cal Oc6d4]} 13. O-O Nb4 14. Ba3 Nxd3 15. Qxd3 Bxa3 16. Qxa3 Bd7 17. Ne5 {[#] And now Qe7 would win.} (17. Rfc1 $5 {[%cal Rc1c7]} Qf4 18. Ne5 $14 (18. Rxb7 Bxa4 19. Re1 Bb5 $14)) 17... Rfc8 18. Rfc1 Qd8 {[#]} 19. Rxb7 $146 ({Predecessor:} 19. Nxd7 Qxd7 20. Qb2 Qxa4 21. Rxc8+ Rxc8 22. Qxb7 Qc4 23. h3 h6 24. d5 exd5 25. exd5 {½-½ (33) Akobian,V (2625)-Dominguez Perez,L (2739) Saint Louis 2019}) 19... Bxa4 20. Nxf7 Qxd4 21. h3 Qxe4 22. Nd6 Rxc1+ $40 {[%mdl 128] Black has some attack.} 23. Qxc1 Qd4 24. Qa3 Rf8 25. Qg3 $1 Bc6 {Chess con chili.} 26. Re7 Bd5 27. Kh2 $2 {This costs White the game.} (27. Ne8 $1 $11 {and White has nothing to worry.}) 27... Rxf2 $19 28. Re8+ Rf8 29. Re7 $2 (29. Rxf8+ Kxf8 30. Nc8) 29... h6 {White must now prevent ...Rf1.} 30. Ne8 {[%cal Re7g7]} Rf7 31. Rxf7 Kxf7 32. Nc7 a5 (32... Bc4 $142 33. Kh1 a5) 33. Nb5 $2 (33. Nxd5 Qxd5 34. Qf4+ Kg6 35. Qa4) 33... Qd2 {Strongly threatening ...a4.} 34. h4 Kg8 35. Nc7 a4 {[%cal Od5g2] ...Bxg2! is the strong threat.} 36. Nxd5 Qxd5 {[%mdl 4096] Endgame KQ-KQ} 37. Qb8+ Kh7 38. Qb1+ Qf5 39. Qb4 Qc2 {Threatens to win with ...e5.} 40. h5 e5 41. Qa3 Qc4 (41... Qb3 $142 42. Qd6 a3 43. Qg6+ Kh8 44. Qe8+ Qg8 45. Qa4 a2 46. Kg1 e4 47. Kf2 Qe6 48. Kf1 e3 49. Ke1 e2 50. Qa8+ Qg8 51. Qa4 Qb8 52. g3 Qxg3+ 53. Kxe2 Qe5+ 54. Kd2 a1=Q 55. Qxa1 Qxa1 56. Kc2 Qe5 57. Kd2 Qxh5 58. Kd3 Qg4 59. Kc3 h5 60. Kd3 h4 61. Kc3 h3 62. Kc2 h2 63. Kd3 h1=Q 64. Ke3 Qge4+ 65. Kf2 Qhg2#) 42. Qh3 Qf4+ 43. Kh1 e4 (43... Qf8 $142 44. Kg1 a3 45. Qb3 e4 46. g4 Qa8 47. Qa2 e3 48. g5 e2 49. Qb1+ Kg8 50. gxh6 Qa7+ 51. Kg2 a2 52. Qa1 e1=Q 53. Qxe1 Qa8+ 54. Kf2 a1=Q 55. Qxa1 Qxa1 56. Ke3 Qc3+ 57. Kf4 gxh6 58. Ke4 Kg7 59. Kf4 Kf6 60. Ke4 Qd2 61. Kf3 Kf5 62. Kg3 Qe2 63. Kh3 Kf4 64. Kh4 Qh2#) 44. Qe6 a3 45. Qg6+ Kg8 {( -> ...a2)} 46. Qe8+ Qf8 {Black mates.} 47. Qxe4 a2 48. Qd5+ Qf7 49. Qa8+ Kh7 50. Qe4+ {[#]} Kh8 $1 51. Qa8+ Qg8 52. Qa5 Qc4 53. Kh2 Qh4+ 54. Kg1 Qd4+ 55. Kh2 a1=Q {Weighted Error Value: White=0.63/Black=0.12 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.1"]
[White "Erigaisi Arjun"]
[Black "Murzin, Volodar"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2629"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,141,19,20,16,30,25,29,23,39,40,122,99,127,74,131,120,132,134,130,128,143,93,111,98,102,104,90,77,76,80,74,65,75,57,91,63,42,0,0,0,15,0,0,0,0,0,0,0,0,-12,-13,-74,-29,-16,-34,-19,-24,-38,-29,-35,0,0,0,0,95,89,285,278,254,227,641,466,626,587,502,369,334,0,190,0,278,213,318,318,311,311,311,311,280,308,311,302,243,128,120,117,123,111,149,77,77,77,77,77,77,77,8135,8709,1577,1320,1219,983,8589,11410,5339,5000,29972,1502,29968,29968,29971,29972,29974,29975,29975,29976,29976,29977,29976,29978,29978,29979,29982,29983]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 e6 5. Bf4 Bd6 6. Bg3 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3.} Nc6 7. e3 Nf6 8. Bd3 {White has an edge.} Bxg3 9. hxg3 {[%cal Bh2g3,Bg3g4,Bg4g5][%mdl 32] [#]} Qd6 $146 (9... e5 $14) ({Predecessor:} 9... Bd7 10. Nf3 Rc8 11. a3 Na5 12. Ne5 Nc4 13. Bxc4 dxc4 14. e4 Bc6 15. Nxc6 Rxc6 {½-½ (27) Stillger,B (2199)-Eckert,M (2090) Dortmund 2019}) 10. g4 $1 $16 Ng8 11. f4 (11. Rxh7 Rxh7 12. Bxh7 Qh2 $1 13. Bxg8 Qxg1+ 14. Ke2 Qxg2 $17) (11. g5 $142) 11... Nge7 (11... Bd7 $142) 12. Nf3 (12. Rxh7 Rxh7 13. Bxh7 g6 $16) 12... Bd7 13. Rc1 (13. Rxh7 Rxh7 14. Bxh7 g6 $14) 13... f6 14. g5 (14. Rxh7 $6 Rxh7 15. Bxh7 e5 $11) 14... O-O-O 15. Nb5 ({Resist} 15. Rxh7 $6 Kb8 $11) (15. a3 $142 $1) 15... Qb4+ 16. Kf2 Kb8 17. a3 $1 Qa5 18. b4 Qb6 {[%cal Oc6b4]} 19. Nc3 {[%cal Bb5c3,Bc3a4,Ba4c5][%mdl 32] Black must now prevent Na4.} Rdf8 20. Na4 Qd8 21. Nc5 Bc8 22. b5 {White is much more active. Black has bad knights.} Na5 23. Kg1 (23. Rxh7 $14 {should be considered.} Rxh7 24. Bxh7) 23... Nf5 $11 24. Qe1 h5 25. gxf6 gxf6 26. Nh4 Nxh4 27. Rxh4 Rfg8 28. Rc2 Nc4 29. Bxc4 dxc4 30. Qf2 (30. Ne4 $11) 30... b6 (30... Rh7 $17) 31. Na6+ Bxa6 32. bxa6 Qd5 33. a4 f5 34. Qe2 {[%csl LRc4,LRh5]} Qe4 35. Rh3 ({Don't blunder} 35. Qxc4 $2 Rc8 36. Qxc8+ Rxc8 $19) 35... h4 36. Rxc4 ({Not} 36. Qxc4 $2 Rc8 37. Rxh4 Rhg8 38. Qxc8+ Rxc8 39. Rxc8+ Kxc8 $19) 36... Rg4 (36... Rh7 $1 $11 {keeps the balance.}) 37. Qf3 $16 Qd5 (37... Qxf3 $16 38. Rxf3 Rc8 39. Rxc8+ Kxc8) 38. Qxd5 $1 $18 exd5 {[%mdl 4096] Endgame KRR-KRR} 39. Rc2 Rc8 $2 (39... Rhg8 40. Rh1 R8g7) 40. Rxc8+ Kxc8 {KR-KR} 41. Kf2 Kd7 42. Rh1 Kd6 43. Rh3 $2 ({White should try} 43. g3 $18) 43... Ke6 $2 (43... Kd7 $1 $11 {and Black stays safe.}) 44. Rh1 (44. g3 $142) 44... Kd6 45. a5 {Hoping for axb6.} bxa5 (45... Kc6 $142 46. Rc1+ Kb5) 46. Ra1 Rg8 47. Rxa5 Rb8 48. Ra1 {Inhibits Rb1.} Rb6 49. Kf3 Ke7 50. Rh1 $1 Rh6 51. g4 ({Better is} 51. g3 $1 $18) 51... fxg4+ $16 52. Kxg4 Rg6+ 53. Kf5 Rxa6 54. Rxh4 (54. Ke5 $142 $1) 54... Re6 55. Rh7+ Kd6 56. Rh3 $1 {Strongly threatening Kg5.} a5 {[#]} 57. Kg5 $1 {aiming for f5.} a4 $2 {[%mdl 8192]} (57... Re8 $16) 58. f5 $18 Re4 59. Rh6+ Ke7 {[#]} 60. Rh7+ $1 Kd6 61. Ra7 {White wants to mate with f6.} Rxe3 62. Rxa4 {Kg6 would kill now.} Re4 63. Kf6 (63. f6 $142 Re2 64. Ra7 Rf2 65. f7 Ke6 66. Kg6 Rg2+ 67. Kh7 Rf2 68. Kg8 Rg2+ 69. Kf8) 63... Kd7 64. Kf7 {White mates.} Kd6 65. f6 {[%cal Bf5f6,Bf6f7][%mdl 32]} Kd7 66. Kf8 Rf4 67. f7 Rg4 68. Ra7+ Kd8 69. Ra6 Kd7 70. Rh6 Rg5 71. Rh7 {Weighted Error Value: White=0.22 (precise) /Black=0.29 (precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.2"]
[White "L'Ami, Erwin"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2622"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,67,15,9,25,19,17,12,18,4,14,14,18,12,11,0,20,6,11,0,17,12,22,13,21,21,27,43,45,40,34,39,93,62,52,50,51,48,61,61,89,82,84,60,58,36,93,52,84,10,49,10,42,6]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 O-O 8. Nc3 d6 9. a3 Na5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 10. Ba2 Be6 11. b4 Bxa2 {The position is equal.} 12. Nxa2 Nc6 13. c4 Nd4 14. Nc3 c6 {[#]} 15. Rb1 $146 ({Predecessor:} 15. Be3 Nxf3+ 16. Qxf3 Qc8 17. h3 Qe6 18. Rfc1 {½-½ (18) Nepomniachtchi,I (2767)-So,W (2760) Jerusalem 2019}) 15... Ne6 16. h3 Qd7 17. Be3 Rfc8 18. Qb3 Bd8 19. Rfd1 Qb7 20. d4 exd4 21. Nxd4 Nxd4 22. Bxd4 Nd7 23. Ne2 {[%cal Bc3e2,Be2g3,Bg3f5][%mdl 32] aiming for Ng3.} Bf6 ({Black should play} 23... c5 $14 24. bxc5 Nxc5 25. Bxc5 (25. Qg3 Ne6 $14) 25... Rxc5) 24. Bxf6 Nxf6 25. Ng3 bxc4 26. Qxc4 d5 27. Qd4 dxe4 28. Nf5 {Threatens to win with Nd6.} Qc7 29. Qe3 {[#] Qg5 is the strong threat. White is more active.} Nd5 30. Qxe4 Re8 ({Better is} 30... g6 $14) 31. Qc2 (31. Qc4 $16 {Black must now prevent Rxd5.} Qe5 32. Nd4 (32. Qxc6 Qxf5 33. g4 Qf3 $15)) 31... Qe5 {[%cal Oc6c5]} 32. Re1 ({And not} 32. Qxc6 Qxf5 33. g4 (33. Qxd5 $2 Re1+ 34. Rxe1 Qxd5 $19) 33... Qf3 34. Rxd5 Qxh3 $17) ({White should try} 32. Rb3 $16) 32... Qf6 33. Rbc1 {And now Rxe8+ would win.} h5 34. Ne3 {Weighted Error Value: White=0.14 (very precise) /Black=0.15 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.3"]
[White "Bjerre, Jonas Buhl"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2586"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,117,27,29,16,10,6,0,7,-10,0,0,15,12,11,0,10,7,0,0,15,17,18,27,21,6,4,7,12,0,0,0,0,0,2,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,-25,-14,-18,-10,-15,-15,-81,-14,-25,-16,-28,-33,-71,0,0,0,0,0,0,54,49,117,0,35,37,87,87,87,106,139,81,139,22,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 d4 5. O-O Nc6 6. d3 Bc5 {is the new trend. A13: English Opening: 1...e6.} 7. Na3 O-O 8. Nc2 e5 9. a3 a5 $1 {Inhibits b4.} 10. b3 h6 {[#]} 11. Rb1 $146 ({Predecessor:} 11. Bd2 Re8 12. b4 Bf8 13. b5 Nb8 14. e3 dxe3 15. Bxe3 Ng4 16. Bc1 Nd7 17. h3 {1-0 (70) Kotanjian,T (2473)-Vardanian,H (2359) Yerevan 2016}) 11... Qe7 12. Qe1 e4 13. dxe4 Nxe4 {Threatens to win with ...Nc3.} 14. Bb2 {[%cal Rf3d4] To avoid Nc3} Nc3 15. Bxc3 dxc3 16. Qxc3 {b4 is the strong threat.} Bf5 (16... Qxe2 $2 17. Rbe1 Nd4 18. Ncxd4 $18) 17. Nh4 Bh7 {This bishop pair is nice.} 18. e4 Bxa3 (18... Bxe4 19. Rbe1 f5 20. Nxf5 $1 Rxf5 21. Bxe4 $16) 19. Nxa3 Qxa3 20. Nf5 Bxf5 21. exf5 Qc5 22. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Ne5 23. Qg3 c6 24. Rfe1 f6 25. h4 Rad8 26. g5 {Black must now prevent gxf6.} Kh8 27. Rbd1 Rxd1 28. Rxd1 Qe7 {[%cal Rh6g5]} 29. gxh6 gxh6 30. Qe3 Qg7 31. Kh1 Rg8 {[%csl Gg8][%cal Rg7g2]} 32. Bh3 {Active counter play!} (32. Bf3 $11) 32... Kh7 (32... b5 $17 33. f4 Ng4) 33. f4 $11 Ng4 34. Qe2 {aiming for h5.} h5 {[%cal Ob7b5]} 35. Rg1 Kh6 (35... b5 $1 $17) 36. Bxg4 hxg4 {[%mdl 4096] Endgame KQR-KQR} 37. Rd1 b5 38. Qe6 g3 (38... Qf8 $11) 39. Kg2 $1 $14 Rf8 (39... Qf8 $14) 40. Rd7 (40. Rd3 $16 Qf7 41. Qxc6 (41. Rxg3 Qe8 $16)) 40... Qg8 (40... Qg4 $5 {[%cal Rg4h4]} 41. Qe7 Rf7 42. Qxf7 Qe2+ 43. Kxg3 Qe3+ 44. Kg4 Qe2+ 45. Kg3 Qe3+ 46. Kg2 Qe2+ 47. Kh1 (47. Kg3 Qe3+ $11) 47... Qf1+ 48. Kh2 Qf2+ 49. Kh3 Qf3+ 50. Kh2 Qf2+ 51. Kh1 Qf1+ 52. Kh2 Qf2+ $11) 41. Rd3 Qxe6 (41... a4 $14) 42. fxe6 $16 bxc4 43. bxc4 $14 {KR-KR} ({But not} 43. Rxg3 cxb3 44. Rxb3 Kg6 $11) 43... Kg6 {[#]} 44. Kxg3 ({Much weaker is} 44. Rxg3+ $6 Kf5 $11) ({White should try} 44. Rd6 $1) 44... a4 {[#]} ({Better is} 44... f5) 45. Kf3 (45. Rd6 $1 $16) 45... f5 $1 $11 {The position is equal.} 46. Rd6 {e7+ would kill now.} Kf6 47. Rxc6 {And now h5 would win.} Ra8 48. Rb6 a3 {( -> ...a2)} 49. Rb1 a2 50. Ra1 Ra3+ 51. Kg2 Kxe6 52. h5 $1 Kf6 53. c5 $1 Kg7 54. c6 Kh6 55. c7 Rc3 56. Rxa2 Rxc7 57. Ra5 Kxh5 58. Rxf5+ Kg4 59. Rg5+ {Weighted Error Value: White=0.12 (very precise) /Black=0.11 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.4"]
[White "Ganguly, Surya Shekhar"]
[Black "Vogel, Roven"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2627"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,125,16,14,10,14,9,25,10,25,19,21,20,28,20,23,27,23,0,4,0,0,6,12,11,18,32,14,17,14,11,6,14,14,11,22,29,43,34,43,29,29,29,29,29,29,29,47,45,47,47,48,27,42,42,42,44,69,68,63,69,70,54,67,59,116,121,116,116,115,114,112,112,149,117,199,183,168,181,174,148,147,141,141,108,132,124,144,141,208,234,200,199,285,276,371,462,435,428,806,501,895,747,1562,1543,1383,1282,1938,1984,6916,1869,2453,1789,2955,2372,2311,2250,12845,12845]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. a4 {Threatens to win with b4. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} a6 7. O-O Ba7 8. Re1 {White has an edge.} h6 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} O-O 10. h3 Ne7 11. Nf1 {11.d4 deserves study.} Ng6 12. Ng3 c6 13. Bb3 d5 14. exd5 Nxd5 15. d4 exd4 16. Nxd4 $5 {[%mdl 4] Leaves trodden paths.} Re8 17. Rxe8+ Qxe8 18. Bxd5 cxd5 19. Be3 Bb8 {White must now prevent ...Bxg3.} 20. Qd2 Bxg3 21. fxg3 Qe5 {[#]} 22. Bf4 $146 ({Predecessor:} 22. Bf2 Bd7 23. Nb3 Qg5 24. Qxg5 hxg5 25. Nc5 Bc6 26. b4 Ne5 27. Re1 Nd7 28. Nxd7 {½-½ (28) Mareco,S (2664)-Kravtsiv,M (2641) Sharjah 2017}) 22... Nxf4 23. Qxf4 f6 24. Kf2 Bd7 25. Re1 Qxf4+ 26. gxf4 $11 {[%mdl 4096] Endgame KRB-KRN} Kf7 {To avoid Re7+} 27. a5 g5 28. Ra1 Rc8 29. Ra3 Rc5 30. Kg3 Bc8 31. h4 Rc7 32. Ra1 {[%cal Ba3a1,Ba1f1,Bf1f8,Bf8b8][%mdl 32]} Re7 33. fxg5 hxg5 34. hxg5 fxg5 35. Rf1+ Kg6 36. Rf8 Bd7 (36... Rc7 $1 $14) 37. Rb8 $16 Be8 38. Rd8 Bd7 39. Nf3 {[%cal Od8d7] And now Rxd7! would win.} Kf6 40. Rf8+ $1 Kg6 41. Rg8+ Kf6 (41... Kf5 $16 42. Rxg5+ Ke4) 42. Rxg5 $18 d4 43. cxd4 Re2 44. Kf4 Rxb2 45. Ne5 Be6 46. Rg6+ Ke7 47. g4 {[%cal Bg2g4,Bg4g5,Bg5g6,Bg6g7][%mdl 32]} Rb4 {[#]} 48. Nf3 Rb5 {[#]} (48... Ra4 $16) 49. Rg5 $1 Rb4 50. Re5 b5 (50... Ra4 {was called for.} 51. g5 Kf7) 51. axb6 {Ng5 is the strong threat.} Kd6 52. g5 Rxb6 {White is clearly winning.} 53. g6 {Inhibits Bf7.} Rb8 (53... Kd7 $142 54. g7 Bg8) 54. Kg5 Rb2 (54... Ra8 $142 55. Nd2 Bd5 56. Ne4+ Bxe4 57. Rxe4 Rh8) 55. Kf6 Bd5 {[#]} 56. g7 $1 {[%cal Oe5d5] Strongly threatening Rxd5+!} Rb6 {[#]} 57. Kg5 $1 {[%cal Oe5d5]} Rb8 (57... Bc4 58. Nh4) 58. Nh4 {Hoping for Nf5+.} Be6 59. Kf6 (59. Nf5+ $142 Kd7 60. d5 Bxf5 61. Rxf5) 59... Bg8 60. Nf5+ Kd7 61. d5 Rb6+ 62. d6 Rb5 63. Re7+ {Weighted Error Value: White=0.10 (very precise) /Black=0.17 (very precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.5"]
[White "Jumabayev, Rinat"]
[Black "Dardha, Daniel"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2631"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "205"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,205,0,15,0,6,0,0,0,8,0,7,3,58,47,51,43,61,61,59,61,47,63,42,54,51,52,44,26,54,46,51,12,16,15,22,22,37,30,75,83,76,78,79,75,75,76,81,75,84,83,153,161,162,145,141,20,22,0,69,52,60,35,64,21,101,75,112,123,120,128,128,105,147,157,147,112,117,109,102,0,120,117,112,109,102,106,125,127,123,120,121,112,104,110,129,138,130,101,91,94,116,116,127,127,127,127,130,130,130,130,218,215,268,268,268,268,264,239,242,0,261,185,178,175,185,185,214,185,185,185,206,180,149,149,217,218,231,147,147,154,167,0,152,0,247,0,174,153,161,50,50,55,161,179,180,175,239,239,1083,1018,719,445,736,439,3054,1504,4137,4137,3877,3249,2695,2737,2500,2253,2261,1895,2142,1735,2383,2362,29982,29983,29983,29984,29984,29984,29984,29985]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Bf4 b6 10. Nbd2 Ba6 11. Rfd1 {E11: Bogo-Indian.} Nh5 12. e3 $5 {[%mdl 4] Exploring less charted territory.} Rc8 13. h4 {Inhibits g5. The position is equal.} Bb7 {[#]} 14. Rac1 $146 ({Predecessor:} 14. Ne5 c5 15. cxd5 Bxd5 16. Bxd5 exd5 17. Qf5 Nxe5 18. dxe5 Nxf4 19. exf4 g6 20. Qd3 {½-½ (42) Herman,T (2315)-Sherwood,H (2353) ICCF email 2019}) 14... h6 15. cxd5 cxd5 ({Black should play} 15... Nxf4 $11 16. exf4 cxd5) 16. Bc7 $14 Qe8 17. Qa4 Nc5 18. Qxe8 ({Reject} 18. Qxa7 Rxc7 19. dxc5 bxc5 $15) 18... Rfxe8 19. dxc5 Rxc7 20. cxb6 Rxc1 21. Rxc1 axb6 22. Rc7 Ba8 23. Nd4 (23. Ra7 $5 {[%cal Rf3e5]}) 23... Bd6 24. Ra7 Nf6 25. Nb5 Bf8 26. Nf3 {Black must now prevent Ne5.} Bc6 27. Nbd4 Rc8 28. Ra6 Nd7 (28... Bd7 $11 {is more appropriate.}) 29. Bf1 $16 Bd6 30. Nxc6 Rxc6 31. Bb5 $36 {[%mdl 2048] White has strong initiative.} Nb8 32. Ra7 Rc7 33. Ra8 Rc1+ 34. Kg2 e5 (34... Kf8 $142) 35. h5 g5 36. hxg6 $1 fxg6 37. Nh4 (37. e4 $16) 37... Kf7 $1 $11 38. Nf3 Ke7 (38... Kg8 $1 $11) 39. b4 Nd7 40. Nh4 Nf6 41. a3 (41. Ra6 $1 $14) 41... Rc2 (41... Ke6 $11) 42. Ra7+ Ke6 43. Bd3 ({Of course not} 43. Nxg6 $6 Ne4 $15) 43... Rc7 44. Rxc7 Bxc7 45. Bxg6 $16 {[%mdl 4096] Endgame KBN-KBN} Bd6 (45... Ng8 $142) 46. Bf5+ Kf7 47. Nf3 Ne8 48. Bd7 Nf6 49. Bf5 Ne8 $1 50. Kf1 Bc7 51. Bc2 Ke6 52. Bh7 Nf6 53. Bg6 Ng8 54. Ke2 Ne7 55. Bc2 Nc8 56. Bh7 Bd8 57. Bg8+ Kd6 58. e4 dxe4 59. Nd2 b5 60. Nxe4+ Kc6 61. Bf7 Kd7 {To avoid Be8+} 62. Bh5 {And now Bg4+ would win. White is more active.} Ke7 63. Nc3 Nd6 64. Bg4 e4 {[#]} (64... Ke8 $16 65. a4 bxa4) 65. Nd5+ $1 $18 Kf7 {[#]} 66. Ke3 $1 Bg5+ 67. Kd4 Bd2 68. Bh5+ Ke6 69. Bg4+ Kf7 70. Ke5 Nc4+ 71. Kxe4 Be1 72. Kf3 Nxa3 73. Bf5 Bd2 74. Ke2 Bg5 75. Kd3 h5 76. f4 Bh6 (76... Bd8 $16 77. Kd4 h4) 77. Kd4 Bf8 78. Bd7 Bd6 79. Kc3 Nb1+ 80. Kd4 Na3 81. Bf5 (81. Bh3 $16) 81... Bf8 $1 82. Bd7 Bd6 83. Kd3 Bf8 84. g4 (84. Kc3 $18) 84... hxg4 $14 85. Bxg4 Nc4 {White now steadily converts the win.} (85... Kg6 $14) 86. Bd7 $18 Nd6 87. Kd4 Kg6 (87... Nb7 $142 88. Bxb5 Ke6) 88. Kc5 Kh5 $2 (88... Kf7 89. Kb6 (89. Bxb5 Nf5+ 90. Kb6 Bd6 $16) 89... Ne4 90. Kxb5 Nf6) 89. Bxb5 Kg4 90. Be2+ Kg3 (90... Kf5 $142 91. Bd3+ Ke6) 91. Bd3 {Kc6 is the strong threat.} Kf3 (91... Nc8+ $142 92. Kc4 Ne7) 92. b5 (92. Kc6 $142 Nc8 93. b5) 92... Nf5+ 93. Kc6 Nd4+ 94. Kd7 Nb3 95. Bc2 Nc5+ 96. Ke8 Bd6 97. f5 {[%cal Bf4f5,Bf5f6,Bf6f7][%mdl 32]} Ke2 98. f6 {Hoping for f7.} Kd2 99. Bf5 {Threatening mate with f7.} Nb7 100. Bc8 {White mates.} Nc5 101. f7 Ne4 102. Bf5 Ng3 103. Bg6 {Weighted Error Value: White=0.13 (very precise) /Black=0.14 (very precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.6"]
[White "Zhu, Jiner"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2478"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,101,20,28,28,0,0,0,0,0,12,8,15,3,12,0,0,0,0,0,0,-11,0,-5,0,0,0,0,0,0,25,0,20,17,21,16,31,30,42,42,40,41,37,37,22,25,33,22,22,0,4,4,8,0,0,0,9,8,11,0,0,0,0,0,2,0,10,0,0,0,36,6,27,29,39,27,51,7,7,7,7,7,7,7,7,7,7,7,7,7,7,9]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O {[%cal Bh1f1,Bf1e1,Be1e5][%mdl 32]} Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nf5 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 8. c3 Nxe5 $1 9. Rxe5 d6 10. Re1 O-O 11. d4 d5 12. Bf4 Bd6 13. Bxd6 Nxd6 14. Nd2 Bf5 {[#]} 15. b3 $146 ({Predecessor:} 15. Qf3 Qg5 16. Qe3 Qxe3 17. Rxe3 Rfe8 18. Rae1 Rxe3 19. Rxe3 f6 20. f3 Kf7 21. Kf2 {0-1 (54) Pichot,A (2628)-Artemiev,V (2699) Riga 2021}) 15... c6 16. Qf3 Bg6 17. Qf4 Qd7 18. c4 dxc4 19. bxc4 Rad8 20. Nf3 Qf5 21. Qd2 c5 22. Nh4 Qc8 23. d5 b6 24. a4 Qg4 {[%csl LRc4,LRh4]} 25. Nxg6 hxg6 26. h3 Qh4 (26... Nxc4 $2 27. Qa2 (27. hxg4 Nxd2 28. Re7 a5 $17) 27... Qf4 28. Bxc4 $18) 27. g3 Qf6 (27... Nxc4 $2 28. Qc3 (28. gxh4 $2 {too greedy.} Nxd2 29. Re7 Rxd5 $19) 28... Qf6 29. Qxf6 gxf6 30. Bxc4 $18) 28. a5 Rfe8 29. axb6 axb6 30. Rab1 Rxe1 31. Qxe1 Nf5 32. Qe4 Nd4 {[#] White must now prevent ...Nf3+.} 33. Bg2 {Inhibits Nf3+.} Rb8 34. h4 Rd8 35. f4 Qd6 36. Qe5 Qd7 37. Rxb6 Qg4 38. Kh2 {[%cal Bg1h2,Bh2g2,Bg2h3][%mdl 32] aiming for Qg5.} Kh7 39. Rb2 Ra8 $1 40. Qe3 Ra6 41. Rd2 Qf5 42. Be4 Qg4 43. Kg2 Rb6 44. Bf3 (44. Bc2 $14 {feels stronger.}) 44... Nf5 $11 {The position is equal.} 45. Bxg4 Nxe3+ {[%mdl 4096] Endgame KRB-KRN} 46. Kh3 {[#] Strongly threatening d6.} Nxc4 47. Rc2 Nd6 48. Rxc5 {Threatens to win with Rc6.} Ne4 49. Rc2 Rb3 {Inhibits Bf3.} 50. Rg2 Rd3 51. Be2 {Weighted Error Value: White=0.06 (flawless) /Black=0.05 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.20"]
[Round "5.7"]
[White "Shuvalova, Polina"]
[Black "Maurizzi, Marc`Andria"]
[Result "1-0"]
[ECO "B75"]
[WhiteElo "2516"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,105,35,37,47,46,56,33,38,34,34,27,73,40,58,63,89,86,118,77,127,118,99,109,126,89,106,100,90,92,103,108,91,87,87,90,92,88,100,103,135,116,128,116,144,156,204,202,191,189,272,195,294,298,309,153,154,155,159,155,155,86,86,93,93,93,93,92,93,93,93,93,93,93,93,86,172,93,142,93,479,393,471,456,793,830,4133,3547,6677,6677,4186,4137,1284,928]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 a6 8. Qd2 h5 {B75: Sicilian Dragon: Yugoslav Attack, Miscellaneous.} 9. Bc4 Nbd7 10. a4 Ne5 {White is slightly better.} 11. Bb3 Bd7 12. f4 {[#]} Nc6 $146 (12... Neg4 $11) ({Predecessor:} 12... Neg4 13. Bg1 e5 14. Nf3 exf4 15. Qxd6 Bc6 16. Qb4 a5 17. Qc5 Nd7 18. Qd6 Qf6 19. Qxf6 Ngxf6 {0-1 (48) Petrov,V (2023)-Tutisani,N (2224) Batumi 2014}) 13. h3 O-O {[%cal Ob7b5]} 14. O-O Nxd4 15. Bxd4 ({Of course not} 15. Qxd4 $6 Ng4 $1 16. Qd2 Nxe3 17. Qxe3 e6 $15) 15... Bc6 {[%cal Oe7e5]} 16. Rae1 (16. f5 $142 {And now fxg6 would win.} Kh7 17. a5) 16... Nd7 (16... e5 $142 17. Bf2 (17. fxe5 dxe5 18. Be3 b5 $14) 17... Bh6) 17. f5 $1 $16 Bxd4+ 18. Qxd4 {Threatens to win with fxg6.} Kh7 19. fxg6+ fxg6 20. Rxf8 {White is much more active.} Qxf8 21. Rf1 Nf6 22. e5 dxe5 23. Qxe5 {[%cal Og2g4]} Rd8 {[#]} 24. Nd5 $1 $36 {[%mdl 2048] Black is under strong pressure.} Bxd5 25. Bxd5 {[%cal Bb3d5,Bd5e4,Be4d3][%mdl 96] Pin} Rd7 (25... Rxd5 $2 26. Qxd5 $3 {[%mdl 512]} b5 27. axb5 Nxd5 28. Rxf8 $18) 26. Be4 {[%cal Oe5h5]} Qg7 27. Bd3 $1 Rd5 28. Qb8 Rd7 29. Rf3 h4 (29... Nd5 $16 {might work better.}) 30. Rf4 $18 Qh6 31. Qe5 {To avoid Qg5} a5 (31... Kg7 $142 32. Rg4 Kf8) 32. b3 b6 (32... Qh5 {is a better defense.} 33. Qe6 Kh6 34. Rxf6 Rxd3 35. Qxe7 (35. cxd3 exf6 36. Qxf6 Qd1+ 37. Kh2 Qe1 $14) 35... Rd1+ 36. Kh2 (36. Rf1 Rxf1+ 37. Kxf1 Qd1+ 38. Qe1 Qd8 $16) 36... Qg5 37. Qf8+ Kh5 38. Qh8+ Qh6 39. Qxh6+ Kxh6) 33. Kh2 Ra7 34. Qd4 (34. Rd4 $18 {and White stays clearly on top.}) 34... Rd7 $16 35. Qf2 Qg5 36. Rxh4+ Kg7 37. Rf4 ({White should play} 37. Qg3 Qxg3+ 38. Kxg3) 37... e5 38. Rc4 e4 39. Bxe4 {aiming for Bf3.} Rd2 40. Qe1 {Bf3 is the strong threat.} Qe5+ 41. Qg3 $1 Qxg3+ 42. Kxg3 {Strongly threatening Rc7+.} Nxe4+ 43. Rxe4 {Black must now prevent Rc4.} Rxc2 {[%mdl 4096] Endgame KR-KR} 44. Kf3 Rd2 {[#]} (44... Rb2 $16) 45. g3 (45. b4 $1 $18) 45... Kf6 (45... Kh6 $142) 46. Kg4 (46. Rf4+ $142 Ke5 47. b4) 46... b5 $2 {[%mdl 8192] This costs Black the game.} (46... Rb2 $16 {is tougher.}) 47. Rf4+ Kg7 {[#]} 48. b4 $1 {White is clearly winning.} ({Less strong is} 48. axb5 Rd5 $14) 48... g5 (48... Rd5 $142 49. bxa5 b4 50. Rxb4 Rxa5) 49. Re4 $18 axb4 50. axb5 b3 51. Rb4 b2 52. Kf3 Rd3+ 53. Kf2 {Weighted Error Value: White=0.16 (very precise) /Black=0.41} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.1"]
[White "Erigaisi Arjun"]
[Black "Ganguly, Surya Shekhar"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2629"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,83,0,0,0,45,0,6,0,0,0,0,0,12,14,34,12,27,17,24,26,35,13,14,0,31,31,162,160,143,159,145,146,145,73,157,165,160,179,352,355,336,339,347,336,318,309,531,534,497,506,582,583,956,925,1074,1041,1010,747,1320,1008,1166,1121,1043,1033,1028,1018,1006,916]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} f6 (10... Bg4 $11 {feels stronger.}) 11. exf6 Nxc3 12. bxc3 {Strongly threatening Bxc6. The position is equal.} Qxf6 13. O-O Bg4 {[%cal Rg4f3]} 14. Be2 Bxf3 15. Bxf3 Rad8 16. Be2 {[#]} Na5 $146 ({Predecessor:} 16... Ne7 17. Qd2 c6 18. Bg5 Qf7 19. Bh5 g6 20. Rfe1 Rd7 21. Bg4 {½-½ (21) Harshad,S (1939)-Ravi,T (2294) Rajapalayam 2018}) 17. a4 c6 18. Bd3 Bc7 19. Qg4 {Black must now prevent Bg5.} Rde8 20. Rae1 {Bg5 is the strong threat.} Bd8 21. g3 Qf3 (21... Qf7 $14) 22. Qh3 $1 $18 g6 {[%cal Od8g5]} 23. Be2 {[%cal Bd3e2,Be2g4,Bg4d7][%mdl 32]} Qf5 24. Bg4 Qf6 25. Bf4 (25. Bd7 $142 $1 {[%cal Rd7e8]} Re7 26. Bf4) 25... h5 {[#]} (25... Nc4 $142) 26. Bd7 $1 $16 {White is more active. This bishop pair is nice.} Rxe1 27. Rxe1 Kh7 $2 (27... Nc4 28. Be8 Qg7) 28. Re6 $18 Qf7 {[#]} 29. Rd6 Qe7 {aiming for ...Nc4.} 30. Be6 {Hoping for Rd7.} ({Weaker is} 30. Qe6 Rf6 31. Qxe7+ Bxe7 32. Rxf6 Bxf6 $16) 30... Rxf4 31. Rd7 Rf6 $2 (31... Qxd7 {was worth a try.} 32. Bxd7 Re4) 32. Rxe7+ {White is clearly winning.} Bxe7 33. Bc8 Rd6 34. g4 Nc4 35. gxh5 gxh5 36. Be6 Kg7 37. f4 {[%cal Bf2f4,Bf4f5,Bf5e6][%mdl 32]} Nd2 38. f5 Rxe6 39. fxe6 Ne4 40. Qxh5 {Qf7+ would kill now.} Ng5 {To avoid Qf7+} 41. Qe8 {Intending h4 and mate.} Kf6 42. Qd7 {Weighted Error Value: White=0.08 (flawless) /Black=0.40} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.2"]
[White "Murzin, Volodar"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2519"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,99,35,39,16,14,25,12,19,25,25,22,16,13,20,15,22,14,13,15,15,23,20,15,21,10,14,8,8,9,18,8,6,6,8,8,15,24,0,0,0,0,0,0,-2,0,0,62,83,97,0,0,0,0,0,0,0,0,-26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. c3 d6 8. a4 Rb8 9. d4 {[%cal Bd2d4,Bd4d5,Bd5c6][%mdl 32]} Bb6 {[%cal Bc5b6,Bb6a7,Ba7e3][%mdl 32]} 10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 (10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5 (13. Bxf7 Bb6 $16) 13... Nxd5 14. exd5 $18) 11. h3 Bb7 12. Be3 {Threatening d5.} Nxe4 13. d5 Bxe3 14. dxc6 Nxf2 $1 15. Qe2 Nxh3+ 16. Kh1 Nf2+ 17. Rxf2 Bxf2 18. Qxf2 Bxc6 {[#]} 19. Nxe5 $1 {[%csl Gb3,Ge5][%cal Rf2f7]} Bxg2+ $1 20. Kg1 $1 {[%csl Gb3,Ge5][%cal Rf2f7]} (20. Kxg2 Qg5+ 21. Kf1 (21. Ng4 $2 Qxg4+ 22. Qg3 Qe2+ 23. Qf2 Qe4+ 24. Kg1 Qg6+ 25. Qg2 Kd7 $19) 21... Qxe5 $17) 20... Qf6 21. Nxf7 {Dancing on a razor blade.} Qxf2+ 22. Kxf2 Rf8 23. Kxg2 Rxf7 24. Bxf7+ Kxf7 $11 {[%mdl 4096] Endgame KRN-KR} 25. Nd2 b4 26. c4 Re8 27. Kf3 {[#] To avoid Re2} g5 $146 ({Predecessor:} 27... Re5 28. Nf1 Rf5+ 29. Ke2 Rh5 30. Kd3 Rh1 31. Re1 c6 {½-½ (31) Nihal,S (2655)-Arjun,K (2503) Riga 2021}) 28. Ne4 Kg6 29. Ke3 Re5 30. Kd4 Rf5 31. c5 d5 (31... h5 $11) 32. Ng3 $14 Rf3 33. Kxd5 Rxg3 $16 {KR-KR} 34. Kc6 $1 Rg2 {And now ...h5 would win.} 35. Kxc7 Rc2 {Threatens to win with ...h5.} 36. Kb6 g4 (36... Rxb2 $2 37. Kxa6 Rb3 38. c6 $18) 37. Rd1 Kg5 (37... Rxb2 $2 38. Kxa6 b3 39. c6 $18) 38. Rd5+ {The position is equal.} Kf4 39. Kxa6 g3 (39... Rxb2 40. c6 Ke4 41. Rb5 $18) 40. Kb5 g2 41. Rd1 Rf2 (41... Rxb2 $6 42. c6 b3 43. a6 $17) 42. Rg1 Kg3 {White must now prevent ...Rf1.} 43. a6 h5 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32]} 44. a7 (44. Kxb4 $2 h4 45. a7 Rf8 $19) 44... Rf8 45. c6 $1 (45. Kxb4 $2 h4 46. Ra1 h3 $19) 45... h4 {Hoping for ...h3.} 46. c7 {[%cal Og1g2] aiming for Rxg2+!} (46. Kxb4 h3 47. Ra1 h2 $19) (46. Ra1 Ra8 47. c7 {[#]} Rxa7 $3 {[%mdl 512]} 48. Rxa7 g1=Q) 46... h3 47. Rc1 Rc8 48. Ra1 Ra8 {Strongly threatening ...h2.} ({Don't take} 48... h2 49. a8=Q Rxa8 50. Rxa8 $16) (48... h2 $5 49. a8=Q Rxa8 50. Rxa8 g1=Q 51. Rg8+ Kf2 52. Rf8+ (52. Rxg1 hxg1=Q 53. c8=Q Qg7 $16) 52... Ke3 $16) 49. Rc1 Rc8 {...h2 is the strong threat.} (49... h2 50. c8=Q Rxc8 51. Rxc8 $18) 50. Ra1 {Weighted Error Value: White=0.04 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.3"]
[White "Vogel, Roven"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "E95"]
[WhiteElo "2452"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,28,0,25,20,48,28,38,29,44,35,56,29,29,4,24,-18,-14,-10,0,0,0,-12,0,0,0,0,0,-9,0,-2,16,0,34,0,-5,-10,-7,-13,0,0,0,0,0,0,14,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,25]} 1. Nf3 d6 2. d4 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1 Re8 9. Bf1 exd4 10. Nxd4 c6 $1 {[%mdl 4] outshines the older 10...Nc5.} 11. Nc2 Nb6 {E95: King's Indian: Classical: 7...Nbd7 8 Re1.} 12. Bg5 {[%cal Oc4c5]} h6 13. Bh4 Be6 {[#] White has an edge.} 14. Ne3 $146 ({Predecessor:} 14. b3 g5 15. Bg3 d5 16. cxd5 cxd5 17. e5 Ne4 18. Nxe4 dxe4 19. Nd4 h5 20. h3 {0-1 (37) Fomichenko,E (2460)-Gochelashvili,D (2436) Krasnodar 2011}) 14... Nbd7 15. Rb1 a5 16. Bd3 Qb6 17. Kh1 Nh5 18. Ncd5 Bxd5 $11 19. cxd5 Ndf6 20. dxc6 bxc6 21. Ng4 Qd4 {[#] ...Nxg4 is the strong threat.} 22. Bxf6 Nxf6 23. Nxf6+ Bxf6 24. Qc2 Kg7 25. b3 h5 26. Rbd1 Qb6 27. Bc4 Rad8 {The position is equal.} 28. g3 h4 29. Kg2 Rh8 30. f4 hxg3 31. hxg3 Qc5 {Inhibits e5.} 32. Bd3 Bc3 33. Rh1 Rxh1 34. Rxh1 Qd4 35. Rd1 Bb4 36. Bc4 Qf6 37. e5 dxe5 38. fxe5 Qg5 39. Rxd8 Qxd8 40. Qf2 Qd2 {Weighted Error Value: White=0.08 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.4"]
[White "Dardha, Daniel"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "B94"]
[WhiteElo "2533"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "243"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,243,14,31,0,42,24,33,29,53,19,47,41,41,40,39,31,97,65,180,12,42,25,29,25,19,22,75,83,103,125,89,93,121,119,164,155,166,166,169,169,160,131,140,119,116,135,182,135,144,124,135,96,95,88,88,88,88,88,88,88,88,88,88,65,65,65,65,65,65,65,65,58,58,59,59,61,64,64,72,58,58,58,65,58,58,58,58,58,58,58,65,58,58,58,58,58,58,65,65,47,47,47,52,47,48,48,48,6,41,41,41,30,41,41,41,30,30,30,30,30,30,30,30,30,30,30,30,30,36,0,0,0,0,0,0,0,0,0,0,0,0,17,58,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Be3 {7.Qe2 is a critical line. B94: Sicilian Najdorf: 6 Bg5 Nbd7.} b5 {[#]} (7... e6 $11) 8. a4 $146 ({Predecessor:} 8. a3 Bb7 9. Bd3 g6 10. Qe2 Bg7 11. O-O O-O 12. f4 Qc7 13. f5 Nc5 14. fxg6 hxg6 {0-1 (47) Zenelaj,F (1919)-Bucan,E (2126) Sarajevo 2017}) 8... bxa4 9. Be2 {White is slightly better.} Bb7 10. Rxa4 Nc5 11. Rb4 Qa5 {[#]} 12. Rxb7 Nxb7 13. O-O g6 (13... e6 $1 $14) 14. b4 $36 {[%mdl 3072] White has strong compensation. White has the initiative.} Qc7 {[#]} (14... Qxb4 $14 15. Qa1 Qa5) 15. Qa1 $2 (15. Ndb5 $1 $18 {[%cal Rb5c7][%mdl 512]} Qc6 (15... Qd8 16. Nd5) 16. Nd5 $1 (16. Qa1 Bg7 $11) 16... Nxd5 17. exd5) 15... Bg7 $11 16. Qa4+ (16. Bxa6 O-O 17. Nde2 d5 $17) 16... Kf8 17. Nd5 Nxd5 18. exd5 Bf6 (18... Bxd4 $11 19. Bxd4 f6) 19. Qc6 $16 ({Reject} 19. Bxa6 Kg7 $11) 19... Qb8 20. Bxa6 Nd8 {[%csl LRb4,LRc6]} 21. Qc4 {White is much more active. Black has bad knights.} Kg7 {[%cal Oa8a6] [#]} 22. b5 $1 e6 (22... Nb7 $16 {was necessary.}) 23. dxe6 Nxe6 24. Nxe6+ fxe6 25. Qxe6 {White wants to mate with Qd7+.} Re8 26. Qd7+ ({Don't take} 26. Bh6+ $6 Kxh6 27. Qxf6 Qb6 $11) 26... Re7 27. Qc6 Rc7 28. Qxd6 {And now Bf4 would win.} Rxc2 (28... Qd8 $16 29. Qf4 Rxc2) 29. Qd7+ (29. Qd3 $18 Rc3 30. Qd7+ Kh8 31. Bd4) 29... Kh8 30. Bb7 {This bishop pair is nice.} Qd8 31. Qe6 Rb8 32. Be4 Rb2 33. Bc6 Kg7 34. g3 R2xb5 35. Bxb5 Rxb5 36. Rc1 Rd5 37. Kg2 Re5 38. Qc6 Qd5+ 39. Qxd5 Rxd5 $14 {[%mdl 4096] Endgame KRB-KRB} 40. Rc7+ Kg8 41. Kf3 h5 42. Rb7 Rf5+ 43. Ke4 Re5+ 44. Kd3 Re7 45. Rb5 Kf7 46. h3 Re5 47. Rb4 Re7 48. Ra4 Rd7+ 49. Ke4 Re7+ 50. Kf3 Re6 51. Bc5 Rc6 52. Ra7+ Ke6 53. Be3 Rd6 54. Ke4 Rc6 {[%cal Bd6c6,Bc6c4,Bc4c3,Bc3b3][%mdl 32]} 55. f4 Rc4+ 56. Kd3 Rc3+ 57. Ke2 {Threatens to win with Ra6+.} Rb3 58. Ra6+ Kf7 59. g4 (59. Ra4 $14 {feels stronger.}) 59... hxg4 (59... g5 $5) 60. hxg4 Be7 61. Ra7 {Hoping for Bc5.} Ke8 {[%cal Ob3e3]} 62. Rc7 Kf8 63. Kf3 Bd6 64. Rc6 Ke7 65. Rc4 Ke6 66. Rc2 Ra3 67. Rc6 Kd7 68. Rc4 Ke6 69. Ke4 Rb3 70. f5+ gxf5+ 71. gxf5+ Kd7 72. Rc2 Rb4+ 73. Kf3 Be5 74. Bg5 Rb5 75. Re2 Bd6 76. Kg4 {Black must now prevent Rd2.} Rb8 77. Rd2 (77. Bf6 $14) 77... Rg8 $11 78. Rd1 Kc6 79. f6 {aiming for Kf5.} Rf8 80. Kf5 {Strongly threatening Bh6.} Be7 $1 81. Ke6 $2 {[%mdl 8192]} (81. Rc1+ $11 Kd5 82. Ra1 (82. Rd1+ Kc4 $14)) 81... Bxf6 82. Rc1+ {Mate.} Kb7 83. Bxf6 {KRB-KR} Rc8 84. Rb1+ Kc6 85. Rd1 Re8+ 86. Be7 Rh8 87. Rc1+ Kb5 88. Bd6 Rh5 89. Be5 Kb4 90. Kd5 Kb5 91. Rb1+ Ka5 92. Kd4 Ka6 93. Bd6 Rb5 94. Bb4 Rb7 95. Kc4 Kb6 96. Bc5+ Kc6 97. Rg1 Kd7 98. Rg6 Rb1 99. Rd6+ Ke8 100. Rd3 Kf7 101. Kd5 Rf1 102. Bd4 Ke7 103. Be5 Rh1 104. Rc3 Rd1+ 105. Ke4 Rd7 106. Kf5 Rb7 107. Rd3 Rd7 108. Rh3 Kf7 109. Rh6 Ke7 110. Rg6 Kf7 111. Bd6 Ke8 112. Re6+ Kd8 113. Rf6 Kc8 114. Ke6 Rh7 115. Rf8+ Kb7 116. Kd5 Rh5+ 117. Be5 Kb6 118. Rb8+ Ka5 119. Rb1 Rg5 120. Rb2 Rh5 121. Rh2 Rxh2 122. Bxh2 {[%mdl 32768] Quite a comeback for Black.  Weighted Error Value: White=0.11 (very precise) /Black=0.12 (very precise) . An unexpected result.} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.5"]
[White "Maurizzi, Marc`Andria"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "E52"]
[WhiteElo "2496"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,8,0,0,10,-11,-7,-8,9,0,2,-8,9,5,46,46,38,43,37,39,41,45,47,42,43,44,36,27,34,27,39,40,48,47,45,47,47,37,43,19,45,18,41,0,41,0,41,0,39,30,43,44]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 d5 7. cxd5 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6.} exd5 8. Bd2 Bd6 9. O-O {The position is equal.} Ba6 10. Bxa6 Nxa6 11. Qa4 {[#]} Nb8 $146 ({Predecessor:} 11... Qc8 12. Rac1 Qb7 13. Nb5 Be7 14. Ne5 c5 15. Rfd1 Rfc8 16. Be1 Bf8 17. f3 Nc7 {½-½ (25) Pheby,I (2312)-Evans,D (2352) ICCF email 2017}) 12. Ne5 Qe8 (12... Qe7 $11) 13. Qxe8 $14 Rxe8 14. Nb5 Ne4 $1 15. Nxd6 cxd6 16. Nf3 g5 {[#] White must now prevent ...g4.} 17. Rfd1 Nd7 18. Rac1 Rac8 19. Be1 f5 20. Kf1 Kf7 21. Ng1 Nf8 22. Ne2 Ng6 23. f3 Nf6 24. Nc3 {Hoping for Nb5.} a6 {To avoid Nb5} ({Don't take} 24... Rxe3 25. Bd2 Rd3 26. Bxg5 Rxd1+ 27. Rxd1 $16) 25. Kf2 h5 26. Na4 Nd7 (26... f4 {keeps more tension.} 27. Bd2 b5 28. Nc3 fxe3+ 29. Bxe3 g4) 27. Nc3 Nf6 28. Na4 Nd7 29. Nc3 (29. Rxc8 $14 Rxc8 30. Nc3) 29... Ke6 30. Bd2 Nf6 31. Ne2 {Weighted Error Value: White=0.09 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.6"]
[White "Van Foreest, Lucas"]
[Black "Shuvalova, Polina"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2530"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,109,4,10,8,0,7,6,0,0,0,0,6,8,9,6,4,13,92,95,108,107,116,114,109,102,114,114,101,90,100,94,133,130,167,161,172,166,199,196,221,202,216,230,286,199,254,172,269,250,285,285,473,221,257,253,249,253,431,415,427,425,420,419,439,444,437,435,683,677,818,803,777,549,549,549,633,633,733,694,1044,1022,1024,1020,1012,1010,1594,1511,29984,29947,29985,29986]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 Nbd7 7. O-O O-O 8. Qc2 c6 9. Bf4 b6 10. Rd1 Bb7 11. Ne5 Nh5 {E08: Closed Catalan: Main Line: 7 Qc2.} 12. Bd2 Nhf6 13. cxd5 cxd5 {The position is equal.} 14. Nc6 Bxc6 15. Qxc6 Rc8 16. Qb5 Ne8 17. Qa4 Rc4 18. Qxa7 {[#]} Nd6 $146 {[#]} (18... Rxd4 $11 19. Na3 Nc5) ({Predecessor:} 18... Rxd4 19. Nc3 Rc4 20. e4 d4 21. Nb5 Nd6 22. Nxd6 Bxd6 23. Rac1 Rxc1 24. Rxc1 d3 {½-½ (37) Petrov,M (2457)-Daubenfeld,N (2513) ICCF email 2019}) 19. e3 $1 $16 b5 20. Qa3 Ne4 21. Qd3 Nxd2 22. Nxd2 Rc8 23. a3 Rb8 24. Bf1 {White is more active.} Nb6 25. b3 {[%cal Bb2b3,Bb3a4,Ba4a5,Ba5a6][%mdl 32]} Nc8 26. Nf3 Qd6 27. Rdc1 Na7 28. a4 bxa4 29. bxa4 (29. Rxa4 $6 Nc6 $16) 29... Nc6 30. a5 Nb4 31. Qa3 f6 32. a6 {Hoping for a7.} Ra8 (32... Rb6 {might work better.} 33. Qa5 (33. a7 Ra8 $16) 33... Ra8) 33. Ne1 ({Much less strong is} 33. a7 $6 Rf7 34. Qb3 Bf8 $18) 33... Rfd8 (33... Rfb8 $142 34. Nc2 Nc6) 34. Qa4 $18 ({Don't play} 34. a7 $6 Rd7 $16) 34... Ra7 35. Rc5 Qb6 {[#]} (35... Rb8 36. Rb1 Nxa6 37. Rxb8+ Qxb8) 36. Ra5 (36. Rb1 $142 $1 Bxc5 37. dxc5 Qxc5 38. Rxb4) 36... Rda8 37. Nc2 Nc6 38. Rb5 Qxa6 {[#]} (38... Qc7 39. Rbb1 Kf7) 39. Rb8+ $1 {[%mdl 512]} Rxb8 40. Bxa6 Rb6 {[#]} 41. e4 $1 {[%cal Oe4d5] aiming for exd5!} Kf8 {[#]} (41... Bf8 42. exd5) 42. exd5 $1 exd5 43. Qa2 {[%cal Oa2d5]} Nb8 {[#]} (43... Raxa6 $142 44. Qxa6 Rxa6 45. Rxa6 Nb4) 44. Qxd5 $1 Raxa6 (44... Nxa6 45. Qh5) 45. Rxa6 Nxa6 46. Ne3 Nc7 47. Qa5 Rb7 48. Qf5 {Black must now prevent Qc8+.} Rb4 49. Qxh7 Ne6 50. Nf5 {Strongly threatening d5.} Rb5 51. Kg2 Rd5 52. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Kf7 53. h5 {Intending Qg6+ and mate.} Bf8 54. Qg6+ Kg8 {[#]} 55. Qe8 $1 {Weighted Error Value: White=0.16 (very precise) /Black=0.59} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.21"]
[Round "6.7"]
[White "Warmerdam, Max"]
[Black "Zhu, Jiner"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2599"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,81,0,0,0,18,0,25,41,51,43,56,56,67,63,44,72,71,59,82,78,78,81,33,0,0,0,30,23,24,0,0,0,0,0,28,0,8,6,8,0,0,0,49,8,8,8,66,0,0,0,17,16,22,36,57,8,8,0,0,-36,-38,-34,-54,-60,519,506,633,626]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4 cxd4 7. cxd4 exd4 8. Bf4 a6 9. Ba4 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} Nge7 10. Nbd2 $5 {[%mdl 4] A promising side line.} b5 {Prevents Nc4.} 11. Bb3 {White has an edge.} d6 {To avoid e5} 12. a4 $1 Rb8 13. axb5 $1 axb5 14. Ng5 $1 O-O {[#]} 15. Qf3 $146 {aiming for Nxf7.} ({Predecessor:} 15. Bxf7+ Rxf7 16. Qb3 Qe8 17. Bxd6 Rb7 18. Ra8 Bh6 19. Nxf7 Qxf7 20. Qh3 Bxd2 21. Rxc8+ {0-1 (37) Avinash,R (2391)-Aditya,V (2281) Budapest 2021}) 15... Rb6 (15... Ne5 $2 16. Bxe5 dxe5 17. Nxf7 $18) 16. Ra8 {White is much more active.} Ra6 17. Rxa6 (17. Nxf7 {keeps more tension.} Rxf7 18. Rxa6 Bxa6 19. Bxd6 Qe8 20. Rc1) 17... Bxa6 {[#]} 18. Nxf7 $1 {[%mdl 64] Decoy} ({Of course not} 18. Qh3 $6 h6 19. Ngf3 Bc8 $11) 18... Rxf7 19. Bxf7+ (19. Bxd6 $5 Qe8 20. Rc1 $11) 19... Kxf7 20. Bxd6+ Kg8 (20... Ke8 $5 {[%cal Rd8d6]} 21. Qf4 h6 $11) 21. Qa3 {[%mdl 1024] White has compensation. Really sharp!} Bb7 22. Nf3 h6 {Inhibits Ng5.} 23. Rd1 g5 24. Bc5 Kh8 25. Qb3 Bc8 26. Qxb5 Bg4 27. Bxe7 Nxe7 28. Ne5 {[%cal Bf3e5,Be5d3,Bd3f4,Bf4g6][%mdl 32] Black must now prevent Nf7+.} Be6 {[#] Inhibits Nf7+.} (28... Bh5 $11) 29. Qc5 (29. Qa6 $1 $14 {deserves consideration.} Bb3 30. Qb7 (30. Rd3 Qb8 $11)) 29... Kh7 $11 30. h4 {And now hxg5 would win.} g4 ({Black should try} 30... Ng6 $11 31. Nxg6 (31. Rxd4 Qe8 $11) 31... Kxg6) 31. g3 (31. Nd3 $1 $14) 31... Qb8 32. Nd3 Qb3 33. Rd2 Qb7 34. Nf4 Bb3 35. Kh2 (35. e5 $14 {might be stronger.} Qe4 36. Re2 Qb1+ 37. Kh2) 35... Kg8 (35... Qxe4 $2 36. Re2 Qf5 37. Qxe7 $18) 36. e5 Nc6 37. Ng6 {[%cal Oc5c6] Prevents Bf8. Threatens to win with Qxc6!} (37. Re2 $5 {[%cal Re5e6]} Bf8 38. Qc1 $11) 37... Kh7 $1 38. h5 Qd7 39. Qb5 Nxe5 $2 {[%mdl 8192] [#]} 40. Qxe5 $1 $18 {[%mdl 512]} Qc6 (40... Qd5 41. Qxd5) 41. Qf5 {Weighted Error Value: White=0.11 (very precise) /Black=0.31} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.1"]
[White "Jumabayev, Rinat"]
[Black "Erigaisi Arjun"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2631"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "167"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,167,27,6,18,24,6,0,0,12,25,42,34,16,52,55,57,26,26,4,19,22,24,27,17,15,18,24,31,22,52,43,45,47,52,50,54,47,65,65,74,65,65,65,66,0,85,72,86,51,90,51,86,52,60,35,60,52,52,27,60,52,50,29,48,25,54,45,46,8,16,-18,47,0,39,0,30,0,27,0,0,0,50,31,50,50,67,20,47,10,45,4,29,27,33,12,29,0,33,25,29,0,63,0,0,0,0,0,35,0,0,0,43,38,52,59,38,45,82,81,75,29,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. a3 d6 7. Be3 $1 {[%mdl 4] is currently scoring better than 7.Be2.} Be7 {B45: Sicilian Four Knights.} 8. Be2 O-O 9. Qd2 Nxd4 10. Bxd4 e5 11. Be3 Be6 12. O-O-O {[#]} Rc8 $146 {[%cal Oc8c3]} ({Predecessor:} 12... a6 13. Kb1 b5 14. f4 Rb8 15. f5 Bc4 16. g4 d5 17. g5 Nxe4 18. Nxe4 dxe4 {0-1 (59) Popov,V (2151)-Serovey,M (1866) ICCF email 2012}) 13. f3 ({Worse is} 13. Bxa7 b6 14. f4 Qc7 $19) 13... a6 14. Kb1 Qc7 {[%cal Od6d5]} 15. Rc1 (15. Bg5 {with more complications.} Rfd8 16. Bd3 b5 17. h4 Qb7 18. g4) 15... Rcd8 16. Nd5 $1 Nxd5 17. exd5 Bd7 18. c4 b6 19. g4 {[%cal Bg2g4,Bg4g5][%mdl 32]} f5 20. h4 Rde8 21. g5 f4 22. Bf2 Bf5+ 23. Bd3 Bxd3+ 24. Qxd3 a5 25. b3 Bd8 26. Qe4 Qd7 27. Kc2 Bc7 28. Kd3 (28. Kd2 $14) 28... Ra8 (28... b5 $11 {remains equal.}) 29. Ke2 {[%cal Bd3e2,Be2f1,Bf1g2][%mdl 32]} Ra6 30. Kf1 Rfa8 31. Kg2 Bd8 32. Rc2 {[%cal Bc1c2,Bc2e2,Be2e4][%mdl 32]} R6a7 33. Qd3 Bc7 34. Rb1 Bd8 35. Rd1 Bc7 36. Re2 Bd8 37. Re4 Bc7 38. Qe2 Ra6 39. Kh2 R6a7 40. Qf1 Kf7 41. Rd2 Ra6 ({Black should try} 41... g6 $11) 42. Qe2 (42. Qd3 $14 {deserves consideration.}) 42... Kg8 43. Qf1 Kf7 44. Rd1 (44. Qd3 {looks sharper.} Qf5 45. Rd1 R6a7 46. Rg1 g6 47. a4) 44... R6a7 45. Qh3 (45. Qd3 {is interesting.} g6 46. Rg1 Qf5 47. Kg2 Rh8 48. Kf1) 45... Qxh3+ 46. Kxh3 Ke7 (46... g6 $11) 47. Kg4 Kd7 48. Re2 Ra6 49. Rd3 {White is more active.} (49. a4 $14 {is superior.}) 49... R6a7 50. Be1 Ra6 51. Bc3 (51. Kf5 $14) 51... Re8 52. Rd1 Ra7 53. Bb2 Ra6 54. h5 Ra7 55. Rh1 Raa8 56. g6 h6 (56... Rh8 $1 $11) 57. Re4 (57. Bc3 $14) 57... Rf8 $1 $11 58. b4 axb4 59. axb4 {[%cal Oc4c5]} Ra2 (59... Ra4 $5 {[%cal Ra4b4]}) 60. Rh2 Rfa8 61. Rhe2 Re8 (61... Bb8 $11) 62. Rc2 $14 Bd8 63. Ree2 (63. Re1 {feels hotter.} Bc7 64. Ree2 Rb8 65. Rc1 Bd8 66. Rec2) 63... Bf6 $1 64. Bc3 Rxc2 65. Rxc2 {[%mdl 4096] Endgame Hoping for Ra2. KRB-KRB} Ra8 {[#] Prevents Ra2.} 66. Kf5 (66. Be1 $1 $16) 66... Ra3 $11 67. c5 (67. Rc1 {seems wilder.} Rb3 68. Ke4 Ra3 69. Rc2 Rb3 70. Bd2) 67... bxc5 {The position is equal.} 68. bxc5 dxc5 69. Bxe5 Bxe5 70. Kxe5 Rxf3 {KR-KR} 71. Ra2 {[#] And now Ra7+ would win.} Re3+ $1 72. Kxf4 Re7 73. Ra6 c4 74. Rc6 Re1 75. Rxc4 Rh1 {( -> ...Rh4+)} 76. Kg4 {Prevents Rh4+.} Rg1+ 77. Kf3 {Strongly threatening Ra4.} Rh1 78. Kg4 {Ra4 is the strong threat.} Rg1+ 79. Kf3 Rh1 80. Rf4 Rxh5 81. Ke4 Kd6 {Threatens to win with ...Re5+.} 82. Rf7 Rxd5 {aiming for ...Re5+.} 83. Rxg7 Rg5 84. Rh7 {Weighted Error Value: White=0.19 (very precise) /Black=0.18 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.2"]
[White "Nguyen, Thai Dai Van"]
[Black "Maurizzi, Marc`Andria"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2609"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,95,24,38,31,36,25,58,50,50,60,72,79,91,37,66,2,134,44,72,72,73,7,6,14,12,11,39,30,30,37,27,0,13,12,19,10,10,3,26,31,64,58,50,35,60,67,81,73,74,31,33,31,38,31,31,8,8,8,9,16,8,8,122,127,89,106,161,156,436,422,400,397,397,394,387,381,468,465,468,447,2068,1632,29974,29975,29979,29980,29980,29974]} 1. Nf3 f5 2. d4 Nf6 3. c4 g6 4. e3 Bg7 5. b4 d6 {[%cal Oe7e5]} 6. Bb2 {A84: Dutch Defence: 2 c4 Miscellaneous.} O-O {[%cal Oe7e5]} 7. Be2 c5 8. bxc5 {White is slightly better.} ({Much worse is} 8. dxc5 dxc5 9. Qb3 cxb4 $11) 8... dxc5 {[%cal Of5f4]} 9. O-O cxd4 10. exd4 Ne4 11. Qc2 {[#]} (11. Qc1 $16) 11... Nc6 $146 {[%cal Rg7d4]} ({Predecessor:} 11... Qc7 12. Nc3 Nxc3 13. Bxc3 b6 14. Rfe1 Bb7 15. Ng5 Qd7 16. d5 Bxc3 17. Qxc3 h6 {1-0 (31) Nesterov,A (2296)-Poliakov,A (2173) Moscow 2017}) 12. Rd1 (12. Na3 $1 $14) 12... Qb6 {[#]} (12... g5 $1 $11) 13. Na3 (13. Nc3 $1 $16) 13... Nb4 14. Qb3 {c5+ is the strong threat.} Be6 15. Nb5 (15. Rab1 $16) 15... Qxb5 $1 $11 16. cxb5 Bxb3 17. axb3 Nd5 18. Rdc1 Bh6 19. Rc2 e6 20. Bc1 Bg7 21. Bc4 Rfc8 22. Be3 Nd6 {[%cal Od6b5]} 23. Rcc1 Nxc4 24. bxc4 {[%cal Bb3c4,Bc4c5][%mdl 32]} Nb6 25. c5 $1 Nd5 26. g3 h6 27. h4 Kf7 28. Ra3 a6 29. Rca1 ({White should play} 29. Ra5 $16) 29... e5 $1 $14 30. bxa6 (30. h5 {feels hotter.} g5 31. dxe5 Nxe3 32. fxe3 g4 33. c6) 30... Rxa6 31. Rxa6 bxa6 32. Bxh6 Bxh6 33. Nxe5+ Kg8 $1 34. Rxa6 Bg7 $1 35. Rxg6 Kh7 (35... Ne7 $11 {keeps the balance.} 36. Re6 Bxe5) 36. Rd6 $16 Nc3 {[#]} 37. Nf3 Kg8 (37... Nb5 $16 38. Rd7 Kg6) 38. Kg2 f4 $2 {A mistake that costs the game.} (38... Nb5 $16) 39. g4 $18 Ne4 40. Re6 Nc3 41. h5 {[%cal Bh4h5,Bh5h6][%mdl 32]} Nb5 42. Rg6 {Strongly threatening h6.} Kh8 43. Rb6 Nxd4 44. h6 Bf8 (44... Nc6 $142 45. hxg7+ Kxg7) 45. Nxd4 Bxc5 46. Rc6 {White mates.} Rxc6 47. Nxc6 Kh7 48. g5 {Weighted Error Value: White=0.13 (very precise) /Black=0.41} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.3"]
[White "Ganguly, Surya Shekhar"]
[Black "Murzin, Volodar"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2627"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,147,11,22,0,0,0,0,4,11,-16,2,-16,0,-7,-8,-19,32,33,60,13,24,0,7,-4,-20,-19,-29,-29,-20,-31,-23,-27,-20,-66,0,-54,-51,-31,-35,-101,-100,-72,-52,-50,-60,-67,-72,-60,-62,-46,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-39,-27,-28,-24,-36,-42,-35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000]} 1. e4 c6 2. Nf3 d5 3. d3 Qc7 4. Nbd2 Bg4 5. h3 Bh5 6. g4 {B10: Caro-Kann: 2 d3 and 2 c4.} Bg6 7. Bg2 e6 8. O-O {[#] The position is equal.} Nf6 $146 {[%cal Rd5e4]} ({Predecessor:} 8... Bd6 9. Re1 Nd7 10. Qe2 dxe4 11. dxe4 e5 12. Nh4 f6 13. Nf5 Bf8 14. Nc4 O-O-O {1-0 (33) Tischbierek,R (2480)-Sorensen,H (2220) Farum 1993}) 9. Re1 Be7 10. b3 O-O 11. Bb2 Nbd7 {To avoid Ne5} 12. Qe2 Rfd8 (12... dxe4 $11 13. dxe4 (13. Nxe4 Nd5 $11) 13... a5) 13. e5 $14 Ne8 14. Nf1 (14. h4 $14 {might be stronger.} h5 15. g5) 14... a5 15. Ng3 h6 16. h4 a4 17. g5 hxg5 18. Nxg5 Bxg5 19. hxg5 Qb6 20. Bf3 Nc7 {[%cal Be8c7,Bc7b5,Bb5c3][%mdl 32]} 21. Bh5 (21. Rab1 $11) 21... Qb4 (21... Nf8 $15) 22. Qg4 (22. Bxg6 $11 fxg6 23. d4) 22... Qxg4 $15 23. Bxg4 Nb5 24. Ne2 (24. f4 $15) 24... a3 $17 25. Bc3 c5 26. f4 c4 27. bxc4 dxc4 28. dxc4 Nxc3 29. Nxc3 {[%cal Be2c3,Bc3b5,Bb5d6][%mdl 32]} Nc5 (29... Rac8 $15 30. Rad1 Rxc4) 30. Nb5 $11 Rd2 31. Re2 Rxc2 32. Rxc2 Bxc2 33. Kf2 Ra4 34. Be2 Bd3 35. Nd6 Bxe2 36. Kxe2 {[%mdl 4096] Endgame KRN-KRN} Rb4 {Prevents Rb1.} 37. Ke3 Rb2 38. Nb5 Rh2 39. Kd4 ({Not} 39. Nxa3 $2 Rh3+ 40. Ke2 (40. Kd4 $2 b6 $19) 40... Rxa3 $19) 39... b6 40. Kc3 ({Avoid the trap} 40. Nxa3 $2 Rh3 41. Rd1 Rxa3 $19) 40... Rf2 41. Nxa3 Rxf4 42. Kb4 Rf2 43. Kb5 Rb2+ 44. Kc6 Nd3 45. Nb5 Nxe5+ 46. Kxb6 Nxc4+ 47. Kc5 Na5 48. Kb6 Nc4+ 49. Kc5 Nd2 50. Kb6 Kh7 51. a4 Kg6 52. a5 {[#] Strongly threatening a6.} Nb3 (52... Kxg5 $2 53. a6 Nc4+ 54. Kc5 $18) 53. Re1 {And now a6 would win.} Nxa5 54. Kxa5 Kxg5 {KRN-KR} 55. Nd6 f5 56. Rxe6 f4 57. Re7 Kf6 58. Rf7+ Ke6 59. Rxf4 {Black keeps a firm grip on the game.} Kxd6 {KR-KR. Mate.} 60. Rg4 Rb7 61. Ka6 Re7 62. Kb5 Re5+ 63. Kc4 g5 64. Kd4 Ke6 65. Re4 Rxe4+ 66. Kxe4 {KP-K} Kf6 67. Kf3 Kf5 68. Kg3 g4 69. Kg2 Kf4 70. Kf2 g3+ 71. Kg2 Kg4 72. Kg1 Kh3 73. Kh1 g2+ 74. Kg1 Kg3 {Weighted Error Value: White=0.09 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.4"]
[White "L'Ami, Erwin"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "C84"]
[WhiteElo "2622"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,136,27,49,0,-9,-41,-28,-26,-29,-65,-12,-30,0,-45,-46,-70,-77,-69,-70,-61,-60,-87,-80,-77,-74,-88,-56,-88,-41,-81,-89,-108,-68,-96,-84,-81,-77,-139,-137,-136,-135,-141,-114,-108,-106,-281,-272,-267,-272,-281,-255,-274,-265,-262,-257,-278,-229,-229,-247,-242,-229,-229,-229,-227,-194,-250,-250,-240,-240,-249,-254,-256,-256,-256,-256,-245,-252,-254,-227,-227,-228,-213,-213,-213,-213,-213,-213,-213,-213,-213,-213,-213,-213,-258,-213,-213,-213,-288,-213,-288,-288,-288,-288,-288,-288,-288,-263,-289,-288,-288,-288,-288,-288,-288,-288,-288,-288,-288,-221,-263,-263,-256,-248,-548,-543,-431,-304]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 Be7 7. Bxc6 {C84: Closed Ruy Lopez: Unusual White 6th moves.} (7. Re1 $14 f5 8. dxe5 (8. Bxc6 dxc6 9. Nxe5 O-O $14)) 7... dxc6 $11 8. Qe2 Bf5 9. dxe5 {Black has an edge.} O-O 10. Be3 c5 {Inhibits Nd4.} (10... Qd5 $15) 11. Rd1 {[#]} Qc8 $146 ({Predecessor:} 11... Qe8 12. c4 Qc6 13. Nbd2 Rad8 14. Nf1 h6 15. Bf4 b5 16. Rac1 Be6 17. cxb5 axb5 {0-1 (43) Anand,V (2765)-Piket,J (2640) Monte Carlo 1997}) 12. Nbd2 (12. Ne1 $1 $11) 12... Qe6 $15 13. Bf4 Nxd2 14. Rxd2 Rad8 15. c4 Rxd2 16. Nxd2 Rd8 17. b3 Rd4 18. Bg3 Qd7 19. Nf1 h5 (19... Be6 $17) 20. h3 h4 21. Bh2 Bg5 22. Kh1 b6 (22... b5 {keeps more tension.} 23. Qh5 Be7 24. Ne3 Be4 25. Kg1 Bg6) 23. f3 a5 {[%cal Ba6a5,Ba5a4][%mdl 32] Black is much more active. White has bad knights.} 24. Ne3 ({White should play} 24. e6 fxe6 25. Be5) 24... Be6 $1 $17 25. Nf1 {Inhibits Rd2.} a4 26. Re1 Bf5 27. Bg1 Rd3 28. Be3 $2 {[#] To avoid Bf4. Now White is beyond hope.} (28. bxa4 $17 {was worth a try.} Qxa4 29. Ne3 Bxe3 30. Bxe3) 28... Bxe3 $1 $19 29. Nxe3 Rd2 (29... axb3 30. axb3 Rd2 31. Qf1 $15) 30. Qf1 Bd3 {To avoid Re2} (30... Rxa2 31. Nxf5 Qxf5 32. bxa4 $17) 31. Qg1 Rxa2 32. bxa4 Qd4 (32... Rxa4 33. Rd1 $15) (32... Qxa4 $2 33. Rc1 $19) 33. Rd1 Re2 ({Inferior is} 33... Rxa4 34. Qe1 $15) 34. Nd5 {[#]} Qxe5 35. Qh2 {Qxe5 is the strong threat.} ({But not} 35. Rxd3 Re1 36. Ne3 Rxg1+ 37. Kxg1 g5 $19) 35... Qxh2+ 36. Kxh2 Bxc4 {Strongly threatening ...Bb3.} 37. Nxc7 {[%mdl 4096] Endgame KRB-KRN} Rb2 38. Kg1 (38. Ra1 $142) 38... Bb3 39. Ra1 {[#]} c4 $1 40. Nb5 Rd2 41. a5 bxa5 42. Rxa5 Rd5 {And now ...Kh7 would win.} 43. Ra8+ Kh7 44. Rb8 Rd1+ 45. Kf2 Rd2+ 46. Kg1 Rd3 {White must now prevent ...Ba4.} 47. Rc8 Ba4 48. Rxc4 Bxb5 49. Rxh4+ {KRB-KR} Kg8 50. Rb4 Rd1+ 51. Kh2 Bd7 52. Rb2 Be6 53. Rb8+ Kh7 54. Rb2 Ra1 55. Rd2 Ra2 56. Rd4 Rc2 57. Kg1 Kg6 58. Kh2 Kf5 59. Kg1 Rc4 60. Rd2 Kf4 {aiming for ...Kg3.} 61. Kh2 Ke3 62. Rb2 Rc5 63. Kg1 Ra5 64. Rb4 Re5 {Inhibits Re4+.} 65. Rb2 Bc4 66. Rc2 Kd3 67. Rb2 $2 (67. Rc1) 67... Rb5 68. Rf2 Kc3 {Weighted Error Value: White=0.18 (very precise) /Black=0.10 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.5"]
[White "Bjerre, Jonas Buhl"]
[Black "Vogel, Roven"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2586"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,101,44,22,44,27,106,94,108,95,87,91,125,139,125,132,139,120,184,197,202,153,150,124,143,129,181,167,159,164,186,177,185,187,182,157,157,167,204,189,195,195,199,161,169,164,182,172,198,194,186,178,186,177,164,143,189,183,234,225,254,253,246,202,246,235,229,229,235,186,271,270,277,259,260,271,297,279,385,402,396,405,438,346,456,448,495,481,405,366]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3,Bb3a2][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 $1 {[%mdl 4] Strongly threatening axb5. is currently scoring better than 8.c3.} Na5 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} 9. Ba2 {[#]} b4 $146 (9... d6 $11) ({Predecessor:} 9... d5 10. exd5 e4 11. Ne5 Bb7 12. d4 Nxd5 13. Nc3 Nxc3 14. bxc3 Bd5 15. Bf4 Bxa2 16. Rxa2 {1-0 (67) Durarbayli,V (2612)-Ivanisevic,I (2650) Baku 2016}) 10. Nxe5 $16 Bb7 {White is better.} 11. d3 {[%cal Bd2d3,Bd3e4,Be4e5][%mdl 32] White is more active.} d5 {[%cal Rd5e4]} 12. Nd2 dxe4 13. dxe4 ({Reject} 13. Nxe4 $6 Nxe4 14. dxe4 Qxd1 15. Rxd1 Bxe4 $11) 13... Qd4 14. Nd3 Rad8 15. Qe2 Bd6 (15... c5 $16 {keeps fighting.}) 16. e5 $18 Rfe8 17. Nf3 Bxf3 18. Qxf3 Bxe5 {[%cal Ob4b3]} 19. Be3 $1 ({Don't play} 19. Rxe5 $6 Rxe5 20. Be3 Rxe3 $1 21. fxe3 Qd6 $11) 19... Qg4 (19... Qd7 $16) 20. Qxg4 Nxg4 21. Bg5 $36 {[%mdl 2048] White is on the roll. This bishop pair is nice.} Bxh2+ 22. Kh1 Bd6 23. Bxd8 Rxd8 24. f3 Nf6 25. Ne5 {Prevents Nc6.} b3 26. Bxb3 Nxb3 27. cxb3 Rb8 28. Nc4 Bg3 29. Re3 Nd5 30. Re4 Nf4 31. Rd1 g6 32. Re3 Ne6 33. Kg1 h5 34. Kf1 Kg7 (34... Bf4 $16) 35. Rd5 h4 {[#]} (35... Rb4 $142 36. Rc3 Nf4) 36. Ne5 $1 Bxe5 37. Rdxe5 {[%mdl 4096] Endgame KRR-KRN} ({Much less strong is} 37. Rexe5 $6 Rxb3 38. Rd7 Kf6 $16) 37... Rd8 38. Rc3 Rd2 39. Re2 Rd1+ 40. Kf2 c5 41. Ke3 Rd6 (41... a5 {was worth a try.} 42. Rd2 Rg1) 42. Rd2 Rb6 43. Rd7 g5 44. Kf2 Kg6 45. Kg1 Kf6 46. Kh2 Kg6 47. Rcd3 a5 48. Ra7 c4 49. Rd2 cxb3 50. Rxa5 Rc6 51. Rad5 {Weighted Error Value: White=0.08 (flawless) /Black=0.25 (precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.6"]
[White "Shuvalova, Polina"]
[Black "Warmerdam, Max"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2516"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,120,33,35,35,34,30,32,37,10,34,28,33,27,26,2,100,105,112,51,68,36,36,18,64,64,72,12,14,2,25,0,0,-39,-43,-37,-35,-33,-27,-120,-114,-114,-117,-112,-97,-126,-120,-125,-116,-107,-119,-115,-116,-128,-124,-122,-124,-123,-111,-116,-95,-110,-87,-87,-87,-146,-115,-184,-164,-143,-87,-136,0,-131,-92,-162,-158,-178,-177,-197,-49,-48,-44,-47,-9,-8,0,-8,0,-14,0,0,0,-14,0,0,0,-23,4,0,0,-100,-103,-77,-86,-694,-679,-665,-637,-29986,-29987,-29981,-5704]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. d4 cxd4 6. Nxd4 Ng6 {now supersedes 6...Qb6. B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 7. Be2 Be7 8. c4 O-O {White is slightly better.} 9. Nc3 b6 10. Be3 Bb7 {[#]} 11. Ndb5 $146 ({Predecessor:} 11. Nxc6 Bxc6 12. Qd2 f5 13. exf5 Nh4 14. f3 Nxf5 15. Bf2 Bg5 16. Qd3 Bf4 17. Ne4 {½-½ (35) Kobalia,M (2614)-Gelfand,B (2676) Chess.com INT 2020}) 11... Qb8 12. Qd2 Bc5 (12... a6 $11 {keeps the balance.}) 13. Rad1 $1 $16 (13. Qxd7 $6 a6 14. Bxc5 Rd8 $11) 13... d6 14. Na4 (14. Nxd6 $16 {Hoping for Bxc5.} Rd8 15. Bxc5 bxc5 16. f4 (16. Na4 Nd4 $11)) 14... Rd8 15. Qc1 (15. f4 {is more complex.} Nge7 16. Qc1 e5 17. Bh5 f6 18. b3) 15... Nce7 16. Nxc5 bxc5 (16... dxc5 $11 17. Rxd8+ Qxd8) 17. Nc3 e5 18. Bd3 (18. Qd2 $16) 18... Nc6 $11 19. Nd5 Nd4 20. b3 a5 21. g3 a4 (21... Bxd5 {looks sharper.} 22. cxd5 a4 23. Qb2 axb3 24. axb3 Qb4) 22. Qb2 axb3 23. axb3 Bxd5 24. Bxd4 {[#]} (24. cxd5 $11 Nxb3 25. Rb1) 24... Bxc4 $1 $17 {[%mdl 512]} 25. Bxc4 exd4 ({Don't play} 25... cxd4 $6 26. f4 $15) 26. f4 {[%cal Ob3b4] To avoid Ne5} Ne7 {[%cal Bg6e7,Be7f5,Bf5e3][%mdl 32]} 27. Qg2 d5 28. exd5 Nf5 29. Rfe1 Ne3 30. Rxe3 dxe3 31. Qf3 Qd6 32. Qxe3 Re8 33. Qf2 Re4 34. Kg2 h6 35. Kg1 Kh8 36. Kg2 Rae8 37. Kg1 (37. Bb5 $142) 37... Re3 38. Kg2 (38. Bb5 $17 {was necessary.} R8e7 39. Bc4) 38... Kg8 39. Qc2 R3e4 {Black is more active.} ({Black should try} 39... h5 40. Qf5 g6) 40. Qf2 (40. Bb5 $142) 40... Re3 41. Qc2 $1 R3e7 42. Ra1 (42. Rd2 $17) 42... Qd7 $1 $19 43. Qf2 Re3 44. Rd1 Qg4 (44... h5 $19 {And now ...Qg4 would win.} 45. d6 h4) 45. Rd2 $1 $15 Qf5 {...Qe4+ is the strong threat.} 46. d6 $1 {[%cal Of2e3]} Qe4+ 47. Kh3 $1 Qf5+ 48. Kg2 Qe4+ 49. Kh3 $1 Rd8 50. Rd5 $1 Qe8 {Prevents Re5.} 51. Kg2 {[%cal Od5e5]} Qe4+ 52. Kh3 Qe8 {Prevents Re5.} 53. Kg2 {[%cal Od5e5]} Rc3 54. Qxc5 {Black must now prevent Re5.} Rc2+ 55. Kh3 {[#]} (55. Kf3 $11 Rxh2 56. Re5) 55... Qe6+ $1 $17 {[%mdl 1024] Black has strong compensation.} (55... Qe4 $2 56. Re5 Qg2+ 57. Kg4 $18) 56. f5 Qe4 {( -> ...h5)} 57. Re5 $2 {[%mdl 8192] Now White is beyond hope.} (57. Rd4 $17 Qg2+ 58. Kg4 Qxh2 59. f6) 57... Qg2+ $19 58. Kg4 h5+ {[%mdl 64] Deflection, Decoy} 59. Kxh5 {[#]} Qf3+ 60. Kg5 Kh7 {Weighted Error Value: White=0.38/Black=0.19 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.22"]
[Round "7.7"]
[White "Zhu, Jiner"]
[Black "Dardha, Daniel"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "2478"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,44,31,25,50,18,21,9,6,0,0,12,0,-16,-12,-81,-62,-69,-68,-103,-102,-387,-374,-489,-480,-739,-733,-1604,-1585]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 $1 {8...Bd7 is better than 8...h6.} 9. f3 Nxd4 10. Qxd4 Be7 {B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} 11. Qd2 b5 12. h4 Qc7 {The position is equal.} 13. g4 b4 14. Ne2 a5 {[%cal Ba6a5,Ba5a4,Ba4a3,Ba3b2][%mdl 32] [#]} 15. Nd4 $146 ({Predecessor:} 15. Kb1 h5 16. gxh5 Nxh5 17. Rg1 Nf6 18. Ng3 a4 19. f4 b3 20. cxb3 axb3 21. a3 {½-½ (47) Bilguun,S (2497)-Docena,J (2426) Makati 2018}) 15... O-O 16. Nb5 (16. Bd3 $11 {keeps the balance.}) 16... Bxb5 $17 17. Bxb5 a4 $1 18. Kb1 ({Don't blunder} 18. Qxb4 $2 Rfb8 19. Bf4 e5 $19) 18... a3 19. Be3 $2 {[%mdl 8192]} (19. Bxf6 $17 Bxf6 20. Qxb4) 19... axb2 $19 {[#] Threatens to win with ...Rfb8.} 20. Qxb4 d5 {Inhibits Qc4. Black is clearly winning.} 21. Qd2 ({Don't play} 21. Qxb2 Ba3 22. Qb3 Rfb8 $19) (21. Bf4 $142 Qxf4 22. Qxe7 Qxf3 23. Rhf1 Qxe4 24. Rfe1 Qxg4 25. Rg1 Qxh4 26. Rdf1) 21... Rfb8 22. Qe2 {[#]} Rxa2 $3 {[%mdl 512] White got outplayed after the opening.  Weighted Error Value: White=1.15/Black=0.01 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.1"]
[White "Erigaisi Arjun"]
[Black "Bjerre, Jonas Buhl"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2629"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,59,19,30,21,17,8,15,49,42,44,20,53,55,125,120,119,120,120,116,115,113,121,121,123,122,127,119,130,120,140,137,141,129,191,191,196,199,205,148,174,145,143,157,148,150,156,155]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 d5 5. exd5 exd5 6. O-O Nf6 7. d4 cxd4 8. Nxd4 {[%cal Oc2c4]} Be7 {B44: Sicilian: Taimanov: 5 Nb5.} 9. h3 O-O 10. Be3 Nxd4 {The position is equal.} 11. Bxd4 {[#]} Bf5 $146 ({Predecessor:} 11... Be6 12. Nd2 Rc8 13. c3 Ne8 14. Qb3 Nd6 15. Rfe1 Qa5 16. Qd1 Nf5 17. Nf3 Rfe8 {½-½ (55) Chadaev,N (2591)-Sevian,S (2553) Chess.com INT 2015}) 12. Nc3 Ne4 13. Re1 {[%cal Rc3e4]} Bf6 ({Black should play} 13... Nxc3 $14 14. Bxc3 Be6) 14. Bxf6 $16 ({Don't play} 14. Bxe4 $6 dxe4 15. Bxf6 Qxf6 $11) 14... Nxf6 15. Nxd5 Nxd5 16. Qxd5 Qxd5 17. Bxd5 Bxc2 18. Re7 Rad8 19. Bxb7 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 20. Rae1 a4 21. Bc6 Rd4 22. Rd7 Rb4 23. Rd2 {White is more active.} Bf5 (23... Rc4 $16 {keeps fighting.}) 24. a3 $18 {White is clearly better.} Rb6 25. Bxa4 Bxh3 26. Re5 Rfb8 27. Rb5 {Hoping for Rxb6.} Kf8 {[#]} 28. Rd8+ $3 {[%mdl 512]} Rxd8 29. Rxb6 Be6 30. Bb3 {White took control after the opening.  Weighted Error Value: White=0.08 (flawless) /Black=0.13 (very precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.2"]
[White "Van Foreest, Lucas"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2530"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,120,4,2,3,5,16,18,11,9,4,15,14,0,0,0,10,6,7,0,0,0,6,14,14,9,8,6,10,2,38,26,30,31,38,38,38,0,0,-43,0,-62,0,0,0,0,0,0,0,0,0,0,0,0,0,0,19,19,23,15,18,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O Nbd7 8. Qc2 c6 9. Bf4 b6 10. Rd1 Bb7 11. Ne5 Nh5 {E08: Closed Catalan: Main Line: 7 Qc2.} 12. Bd2 Nhf6 13. cxd5 cxd5 14. Nc6 Bxc6 15. Qxc6 a6 16. Qc2 b5 17. Qd3 Qc8 18. Rc1 Qb7 {[#]} 19. Bf4 $146 ({Predecessor:} 19. Nc3 Nb6 20. Be1 Rac8 21. e3 Rc7 22. Ne2 Rfc8 23. Rxc7 Rxc7 24. Rc1 Qc8 25. Rxc7 Qxc7 {½-½ (44) Batchuluun,T (2530)-Xiang,Z (2436) Tianjin 2020}) 19... Rfc8 20. Nd2 Rxc1+ 21. Rxc1 Rc8 22. Qb1 Nb6 23. Rc2 Nfd7 24. e4 {[%cal Be2e4,Be4e5][%mdl 32]} Nf6 {[%cal Rd5e4]} 25. e5 Nfd7 {[%cal Bf6d7,Bd7b8,Bb8c6,Bc6e7,Be7f5][%mdl 32]} 26. Bf1 Nc4 27. Bd3 {[%cal Od3h7]} h6 28. Qc1 {[%cal Oa2a4]} Nb8 {White must now prevent ...Nc6.} 29. b3 {[#]} ({Much worse is} 29. Bxc4 dxc4 30. Be3 Nc6 $17) (29. Nxc4 bxc4 30. Be2 Nc6 $15) (29. a3 $11 {deserves consideration.}) 29... Ba3 (29... Nc6 $1 $15 {should be considered.} 30. bxc4 (30. Qa1 Na3) 30... Nxd4) 30. Qd1 (30. Qb1 $11 Nxd2 31. Rxc8+ (31. Bxd2 Rxc2 32. Qxc2 Nc6 $11) 31... Qxc8 32. Bxd2) 30... Nxd2 ({Black should play} 30... Nb2 $1 $15 31. Rxc8+ Qxc8) 31. Rxc8+ ({Not} 31. Rxd2 $2 Rc1 32. Be3 Rxd1+ $19) 31... Qxc8 32. Qxd2 Nc6 33. Bb1 h5 34. Kg2 Qc7 35. Qd1 g6 36. Be3 Ne7 37. Qd2 Nf5 38. Bg5 Bf8 39. h3 Ne7 {The position is equal.} 40. g4 hxg4 41. hxg4 Nc6 42. Be3 Qc8 43. f4 Bb4 44. Qc1 Ne7 45. Qxc8+ Nxc8 $11 {[%mdl 4096] Endgame KBB-KBN} 46. Kf3 Ne7 47. Ke2 Nc6 48. Kd3 Kf8 49. Bc1 Ke8 50. a3 Be7 51. Bc2 Bh4 52. Ke3 Kd7 53. Bb2 Bd8 54. Kd3 Bb6 55. Bd1 Ke7 56. Bf3 Na5 57. Bd1 Nc6 58. Bc3 Kd7 59. Bf3 Na5 60. Bd1 Nc6 {Weighted Error Value: White=0.07 (flawless) /Black=0.06 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.3"]
[White "Ganguly, Surya Shekhar"]
[Black "Jumabayev, Rinat"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2627"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,72,15,12,5,13,0,0,0,0,0,-2,-17,-10,-36,-34,-90,-90,-48,-74,-138,-127,-139,-135,-151,-133,-141,-133,-123,-147,-137,-96,-96,-107,-116,-86,-77,-25,-17,-30,-36,0,0,0,0,0,-302,-315,-479,-460,-460,-450,-623,-601,-668,-668,-820,-816,-811,-800,-739,-742]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 {[%cal Bd2d3,Bd3d4,Bd4c5][%mdl 32]} d6 6. a4 a5 7. O-O O-O 8. h3 {Recently 8.Nbd2 got a lot of attention. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Be6 9. Bb5 {[#]} Na7 $146 ({Predecessor:} 9... Ne7 10. d4 Bb6 11. Bd3 Ng6 12. Re1 Re8 13. Be3 c6 14. Nbd2 h6 15. Qc2 Nh5 {0-1 (58) Preotu,R (2487)-Oparin,G (2652) Chess.com INT 2020}) 10. d4 {The position is equal.} Nxb5 11. dxc5 Na7 12. Qe2 Nc6 13. Rd1 Bb3 14. Rd2 ({White should try} 14. Re1 $15) 14... d5 $1 $17 15. exd5 Bxd5 16. Qd1 {[#]} (16. Rd1 $142) 16... Qd7 $1 17. Ng5 {[%cal Oc3c4] Hoping for c4!} h6 18. c4 hxg5 19. cxd5 Nd4 20. Rd3 {[%cal Bd2d3,Bd3g3,Bg3g5][%mdl 32]} Nxd5 21. Bxg5 Qf5 (21... Nb4 $142 22. Rg3 f6) 22. Nc3 Nb4 {Pair of Knights!} ({Reject} 22... Qxg5 $6 23. Nxd5 Qd8 24. Nc3 $11) 23. Rg3 Ra6 $36 {[%mdl 2048] Black is really pushing.} 24. Be3 Rd8 {Black is much more active.} ({Black should play} 24... Rg6 $17 {White must now prevent ...Rxg3.} 25. Rxg6 (25. Bxd4 $2 Rxg3 26. fxg3 exd4 $19) 25... Qxg6) 25. Rg5 $11 Qe6 26. Nb5 $1 Rc6 27. Nxd4 exd4 28. Bxd4 Qh6 29. h4 {[%mdl 8192] [#]} (29. Rg4 $1 $11 {and White stays safe.}) 29... Rg6 $1 $19 30. Ra3 (30. Qg4 $142 Nc2 31. Rd1 Rxg5 32. Be3 (32. hxg5 $2 {too greedy.} Qe6 $19) 32... Rxg4 33. Rxd8+ Kh7 34. Bxh6 Kxh6 35. Rd7) 30... Rxg5 {Black is clearly winning.} 31. hxg5 Qh4 32. g4 {[%cal Og5g6]} Qxg5 33. Rh3 Qf4 34. Qb1 {Qh7+ is the strong threat.} Qxg4+ 35. Kh2 Rxd4 36. Qh7+ Kf8 {Weighted Error Value: White=0.48/Black=0.07 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.4"]
[White "Warmerdam, Max"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2599"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,0,0,0,0,0,0,0,0,0,8,8,6,0,0,0,0,0,0,0,0,-4,0,-40,-8,-8,0,0,0,2,21,25,18,20,27,27,26,27,26,22,28,14,26,26,34,28,34,27,31,28,35,33,29,0,29,0,32,33,33,33,35,31,29,0,0,0,38,39,31,37,24,0,9,0,24,18,23,9,23,0,0,0,0,0,0]} 1. Nf3 d5 {[%cal Bd7d5,Bd5c4][%mdl 32]} 2. c4 c6 3. g3 Nf6 4. Bg2 dxc4 5. Qc2 b5 6. O-O {A11: English Opening: 1...c6.} Bb7 7. Ne1 e6 8. d3 cxd3 9. Nxd3 {[#]} Be7 $146 ({Predecessor:} 9... Nbd7 10. a4 Rc8 11. Rd1 Qb6 12. Be3 c5 13. Bxb7 Qxb7 14. axb5 Ng4 15. Qd2 Be7 {½-½ (38) Dittmar,P-Poeter,M freechess.de 2020}) 10. Rd1 O-O 11. a4 Qc8 12. Bg5 Nbd7 13. axb5 c5 14. Bxb7 Qxb7 15. Qa4 Rfc8 16. Nd2 h6 (16... Nb6 $5 {[%cal Rb6a4]} 17. Qa6 Qd5 $11) 17. Bxf6 Bxf6 18. Rdc1 Rcb8 19. Ne4 Qxb5 20. Nxf6+ Nxf6 21. Rxc5 Qxa4 22. Rxa4 Rb7 23. Rca5 Nd7 {[%cal Bf6d7,Bd7b6,Bb6d5][%mdl 32]} 24. f4 Nb6 25. Ra2 g6 26. Kf2 Nd5 27. R2a4 h5 28. Kf3 Kg7 29. h3 Nb6 30. Ra2 Nd5 31. R2a4 Nb6 32. Ra2 Nd5 33. R5a4 Nb6 34. Ra6 Nd5 35. R2a4 Nb6 36. Ra2 Nd5 $1 37. R2a4 Nb6 38. Ra1 Nd5 39. R6a4 Nb6 40. Ra6 Nd5 41. R6a4 Nb6 42. R4a2 Nd5 43. Ra5 Nb4 44. Nxb4 Rxb4 {The position is equal.} 45. Rxa7 Rxa7 46. Rxa7 Rxb2 {Weighted Error Value: White=0.05 (flawless) /Black=0.02 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.5"]
[White "Murzin, Volodar"]
[Black "Maurizzi, Marc`Andria"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2519"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,131,31,34,27,34,0,0,0,-1,-12,0,-32,-25,-24,0,0,0,0,0,-45,0,0,0,-10,0,-20,-20,-20,-10,-8,0,0,25,17,22,27,53,54,41,54,62,56,62,66,62,0,0,0,0,0,0,0,168,-265,-287,-256,-14,-14,-15,-14,-14,-15,0,0,0,0,0,0,29,29,29,29,134,131,137,87,695,695,695,301,301,301,301,301,695,0,301,301,301,301,356,317,695,315,695,301,301,0,695,301,695,200,695,0,301,200,296,200,200,200,200,200,301,200,225,106,695,695,695,695,695,695,695,695]} 1. Nf3 Nf6 2. d4 e6 3. c4 a6 4. Nc3 d5 5. cxd5 exd5 6. Bg5 {D37: Queen's Gambit Declined: 5 Bf4.} Be6 7. g3 Nbd7 8. Bg2 {The position is equal.} Bd6 9. O-O c6 10. Qc2 h6 11. Bf4 {[#]} Qc7 $146 ({Predecessor:} 11... Qb8 12. Bxd6 Qxd6 13. a3 O-O 14. b4 Rfe8 15. Na4 b6 16. Rfc1 Rac8 17. Qd3 Bg4 {0-1 (53) Doluweera,D (1863)-Mezentsev,I (2354) Chess.com INT 2020}) 12. e3 O-O 13. Nh4 Rfe8 14. Nf5 (14. Rfe1 $11) 14... Bxf5 (14... Bxf4 $15 {might be stronger.} 15. gxf4 Nb6) 15. Qxf5 g6 16. Qc2 {[%cal Oc3d5]} Bxf4 17. gxf4 {[%cal Oc3d5]} Nb6 18. Kh1 Qd7 19. Rg1 Kh7 20. Bf1 Ne4 21. Bd3 {[%cal Rc3e4]} f5 22. Rg2 Re6 23. Ne2 {[%cal Bc3e2,Be2g1,Bg1f3,Bf3e5][%mdl 32]} Rc8 24. b4 Nc4 25. Ng1 a5 26. a3 Ra8 {aiming for ...axb4.} 27. Ra2 ({Better is} 27. Bxc4 $14 dxc4 28. bxa5) 27... b5 $11 28. Nf3 Qa7 29. bxa5 Qxa5 30. Ne5 Nxa3 $2 (30... Qa4 $11) 31. Rxa3 $4 {[%mdl 8192]} Qxa3 $19 32. f3 {[#]} Qc3 $2 33. fxe4 $11 Ra1+ 34. Rg1 {Chess con chili.} Rxg1+ 35. Kxg1 Qe1+ 36. Kg2 fxe4 37. Bxb5 Qxe3 38. Bxc6 Qxf4 {Threatens to win with ...Rf6.} 39. Bxd5 {White wants to mate with Qc7+.} Qg5+ 40. Kh1 Re7 (40... Qf6 $1 $11 {remains equal.} 41. Qg2 Ra6) 41. Qc8 $36 {[%csl Gd5][%cal Rc8g8][%mdl 2048] White is really pushing.} Re8 {[#] Prevents Qg8+.} 42. Qc6 {White is more active.} ({Much weaker is} 42. Qxe8 $6 Qc1+ 43. Kg2 Qd2+ 44. Kh3 Qe3+ 45. Kg4 Qg5+ 46. Kh3 Qe3+ 47. Kh4 Qg5+ 48. Kh3 Qe3+ $11) (42. Qc4 $142 $1) 42... Rxe5 $4 {[%mdl 8192]} (42... Re7 $16) 43. dxe5 $18 {Qd7+ would kill now.} Qxe5 44. Bxe4 (44. Qd7+ $142 Qg7 45. Qc6) 44... Qa1+ 45. Kg2 Qa2+ 46. Kg3 Qb3+ $2 (46... Qa3+ 47. Kg4 h5+ 48. Kf4 Qf8+ 49. Kg3 Qf7) 47. Kg2 (47. Kh4 $142 Qf7 48. Kg3) 47... Qa2+ $1 48. Bc2 Qf7 49. Kg3 {Black must now prevent Be4.} Kg7 50. Bd3 Qf6 $2 (50... h5 51. Qe4 Qf6) 51. Qc7+ (51. Qxf6+ $142 Kxf6 52. h4) 51... Qf7 $2 (51... Kh8 52. Be4 Qd4) 52. Qc5 (52. Qxf7+ $142 Kxf7 53. Be4) 52... Qe6 53. Qc7+ $2 (53. Qd4+ Qf6 54. Qd7+ Kf8 55. Qc8+ Kg7 56. Qd7+ Kf8 57. Qc8+ Kg7 58. Qd7+) 53... Qf7 $1 54. Qe5+ (54. Qxf7+ $142 Kxf7 55. Be4) 54... Qf6 $2 (54... Kh7 55. Be4 Qa7) 55. Qd5 $2 (55. Qxf6+ Kxf6 56. h4) 55... Qf7 $2 (55... Qg5+ 56. Qxg5 hxg5 57. h3 $18) (55... h5 56. h4 Kh6) 56. Qc5 (56. Qxf7+ $142 Kxf7 57. Bc4+ Kg7 58. Kf4) 56... Qe6 $1 57. Kf2 {Inhibits Qe1+.} Qa2+ (57... Qf6+ $142 58. Ke2 h5 59. Qc7+ Kh6) 58. Ke3 {Threatening mate with Bc4.} Qe6+ 59. Kd2 Qa2+ 60. Bc2 {Qe7+ is the strong threat.} Qe6 {Inhibits Qe7+.} (60... Qf7 $142 61. Bd3 Qf4+ 62. Kd1 Qa4+ 63. Kc1 Qa1+ 64. Kd2 Qa2+ 65. Ke1 Qa1+ 66. Kd2 Qa2+) 61. Kc3 Qf6+ 62. Kb4 (62. Qd4 $18 {Strongly threatening Kd3.} Qxd4+ 63. Kxd4) 62... Qf8 $2 {[%mdl 8192]} (62... h5 $16 63. Qa7+ Qf7 64. Qd4+ Qf6 65. Qd7+ Kh6 66. Qd2+ Kh7 67. Qd7+ Kh6) 63. Qxf8+ {White is clearly winning.} Kxf8 64. Kc5 Kg7 65. Kd5 Kf6 66. Ke4 {[%mdl 32768] Never resign too early!  Weighted Error Value: White=0.96/Black=0.70. An unexpected result.} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.6"]
[White "Dardha, Daniel"]
[Black "Shuvalova, Polina"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "2533"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,42,49,32,31,40,47,46,38,47,36,41,75,75,76,74,66,80,105,105,108,79,75,73,64,58,100,87,972,871,29998,29999,29999]} 1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nf6 6. Bg5 Be6 7. e3 c4 {D32: Tarrasch Defence: Sidelines and lines without g3.} 8. Ne5 Qa5 {[#] aiming for ...Ne4.} 9. Bxf6 gxf6 {White is slightly better.} 10. Nf3 Nc6 {[#]} 11. g3 $146 ({Predecessor:} 11. Be2 Bb4 12. Qc1 O-O 13. O-O Kh8 14. a3 Bxc3 15. bxc3 Qc7 16. a4 a6 17. Qa3 {0-1 (37) Rapport,R (2763)-Nihal,S (2650) Chess.com INT 2021}) 11... Bf5 12. a3 {Inhibits Nb4.} O-O-O 13. Nh4 Be6 14. Bg2 Be7 15. O-O f5 16. Nf3 Kb8 17. b4 Qc7 18. Rb1 Ka8 (18... Rhg8 $14) 19. Qa4 Nb8 $2 {[%mdl 8192]} (19... Qb6 $16) 20. Nb5 $1 $18 {[%csl LRa7,LRc7][%cal Rb5c7] Pair of Knights!} Qb6 {[#]} 21. Qxa7+ $1 {[%mdl 512]} Qxa7 22. Nc7# {Weighted Error Value: White=0.05 (flawless) /Black=0.48} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.23"]
[Round "8.7"]
[White "Vogel, Roven"]
[Black "Zhu, Jiner"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2452"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,74,15,3,10,-4,0,0,4,0,0,0,0,0,0,0,14,14,8,7,6,0,0,-21,-20,-27,-19,-20,-24,-20,-25,-42,-13,-30,-12,-14,-19,-56,-29,-224,-219,-635,-622,-1856,-1643,-1973,-1973,-1580,-1590,-2651,-2601,-1771,-1585,-1585,-1468,-29984,473,-29983,-29984]} 1. Nf3 Nf6 2. d4 d5 3. e3 e6 4. b3 c5 5. Bb2 Nc6 6. Nbd2 Be7 7. a3 O-O 8. Bd3 b6 9. O-O Bb7 10. Qe2 a5 {D05: Colle System with ...e6.} 11. Ne5 Qc7 12. Nxc6 {[#]} Bxc6 $146 {The position is equal.} ({Predecessor:} 12... Qxc6 13. Bb5 Qc7 14. Rac1 cxd4 15. exd4 Bd6 16. g3 Qe7 17. Ra1 Rfc8 18. Bd3 b5 {½-½ (33) Shvedchikov,A (2409)-Belov,V (2627) Moscow 2009}) 13. a4 Rac8 14. f4 Ne4 15. dxc5 Bxc5 16. Kh1 Nxd2 17. Qxd2 f6 18. Qe2 Qe7 19. e4 d4 20. f5 Kh8 21. Qh5 exf5 22. exf5 Rfe8 23. Rf4 Qb7 24. Qg4 Rcd8 (24... b5 $5 {[%cal Rb5a4]} 25. Bxd4 Bd6 $11) 25. Rg1 Re5 26. Bc1 Rde8 {[%cal Bd8e8,Be8e2,Be2d2][%mdl 32]} 27. Qh3 Re1 {[%cal Oe8e2] ...R8e2! is the strong threat.} (27... Re2 $5 {[%cal Rc6g2]} 28. Rg4 (28. Bxe2 $2 Rxe2 29. Rf3 d3 $19) 28... Rf2 $15) 28. Bd2 $2 {[#]} (28. Rff1 $11 {and White is okay.} R1e2 29. Bf4) 28... R1e2 $1 $19 29. Bxe2 (29. Bc1) 29... Rxe2 30. Rh4 Rxd2 31. Rxh7+ Kg8 {[%cal Oc6g2] And now ...Bxg2+! would win.} 32. Rh8+ Kf7 {[%cal Oc6g2] ( -> ...Bxg2+!). Active counter play!} 33. Qg4 {[#]} Bxg2+ $1 {[%mdl 512]} 34. Rxg2 Qxg2+ 35. Qxg2 Rd1+ 36. Qg1 Rxg1+ 37. Kxg1 d3+ $1 {[%mdl 64] Discovered Attack.  Weighted Error Value: White=1.11/Black=0.04 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.1"]
[White "Zhu, Jiner"]
[Black "Erigaisi Arjun"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2478"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,104,31,58,29,33,42,26,34,39,33,28,31,47,40,38,-7,0,-7,0,0,0,-8,0,-6,0,0,-8,-45,-47,-60,-53,-81,-81,-101,-95,-95,-90,-97,-89,-99,-83,-102,-88,-114,-100,-93,-104,-99,-108,-112,-120,-116,-108,-139,-132,-126,-126,-115,-122,-166,-159,-163,-173,-166,-168,-183,-33,-29,0,0,0,-422,-404,-1196,-1258,-1259,-1226,-1029,-981,-1516,-1461,-29973,-29974,-29976,-29978,-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982,-29985,-29986,-29986,-29983]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. c3 Nge7 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann.} exd4 7. cxd4 Bb4+ 8. Bd2 {White has an edge.} Bxd2+ 9. Qxd2 d5 10. exd5 Qxd5 11. Nc3 Qe6+ 12. Kf1 (12. Qe3 $14 {feels stronger.}) 12... Qc4+ $11 13. Kg1 $1 {[#]} Be6 $146 {Inhibits d5.} ({Predecessor:} 13... O-O 14. d5 Nb8 15. Re1 Ng6 16. h4 h5 17. Re4 Qc5 18. Qg5 b5 19. Bb3 Nd7 {0-1 (48) Bernadskiy,V (2600)-Petrov,N (2570) Novi Sad 2021}) 14. Ne5 Qb4 15. a3 Qb6 16. Bxc6+ Nxc6 17. Nxc6 Qxc6 18. h4 O-O-O 19. h5 Bd5 20. f3 Qf6 21. Qf2 Bb3 22. Rh4 Rhe8 23. Rg4 Qh6 {Black is more active.} 24. Re1 {[%cal Od4d5]} f5 25. Rh4 Bf7 {White must now prevent ...Rxe1+.} 26. Kh2 Bxh5 27. Rxe8 Rxe8 28. Qg3 Qg6 29. Qf4 Qf7 {Prevents Nd5.} 30. d5 Bg6 31. d6 Rd8 {[%cal Be8d8,Bd8d2,Bd2b2][%mdl 32]} 32. dxc7 Qxc7 33. Qxc7+ Kxc7 $17 {[%mdl 4096] Endgame KRB-KRN} 34. Ne2 (34. a4 $17 {was worth a try.}) 34... Rd2 $19 35. Nf4 Rxb2 36. Nxg6 hxg6 {KR-KR} 37. Rh7 Kb6 ({Black should play} 37... Kc8 $19 {Hoping for ...Rb3.} 38. Rxg7 Rb3 39. Rg8+ Kc7 40. Rg7+ Kb8) 38. Rxg7 $15 Ka5 39. Rxg6 Ka4 40. Rg5 $2 {[%mdl 8192] [#]} (40. Rf6 $11) 40... f4 $1 $19 41. Rf5 (41. Kh3 $142 Kxa3 42. Ra5+ Kb3 43. Ra1) 41... Kxa3 42. Rxf4 b5 {And now ...a5 would win.} 43. Kh3 b4 44. g4 b3 {Threatens to win with ...Rc2.} 45. Rf5 Ra2 {Black mates.} 46. g5 b2 47. Rf6 {[#]} a5 $1 ({And not} 47... b1=Q 48. Rxa6+ Kb3 49. Rb6+ Kc2 50. Rxb1 Kxb1 51. f4 $11) 48. Rb6 Ra1 49. f4 b1=Q 50. Rxb1 Rxb1 51. g6 Rg1 52. f5 Rg5 {Weighted Error Value: White=0.63/Black=0.10 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.2"]
[White "Nguyen, Thai Dai Van"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2609"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,55,10,24,17,15,20,11,15,10,8,11,18,8,18,0,16,0,0,-11,31,0,0,0,48,20,24,-10,0,-16,-18,-18,-18,-15,-21,-16,-18,-16,-15,-13,0,0,0,-19]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Nxd4 Ngf6 6. O-O e6 7. c4 Be7 8. Nc3 O-O {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 9. Bxd7 Bxd7 {[#]} 10. Qd3 $146 ({Predecessor:} 10. Be3 a6 11. a4 Qa5 12. Rc1 Rfc8 13. b3 d5 14. e5 Ne8 15. Nde2 Nc7 16. c5 Bxc5 17. Bxc5 Qxc5 {0-1 (30) Vachier Lagrave,M (2758)-Giri,A (2776) chess24.com INT 2021}) 10... a6 11. h3 Rc8 12. b3 Qc7 {[%cal Ob7b5]} 13. Bb2 Rfd8 14. Rac1 Be8 15. f4 Qa5 16. a4 Nd7 (16... Bf8 $11) 17. Kh1 (17. f5 $5 {[%cal Rf5e6]} d5 18. exd5 $14 (18. cxd5 e5 $17) (18. fxe6 dxc4 19. Qg3 fxe6 $17)) 17... Bf6 18. Nce2 b5 (18... Nc5 $11 {deserves consideration.} 19. Qe3 Qb6) 19. cxb5 {[%cal Oe4e5]} axb5 {White must now prevent ...Nc5.} 20. Bc3 ({Don't play} 20. Qxb5 Qxb5 21. axb5 Nc5 $15) 20... Qa8 {aiming for ...Nc5. The position is equal.} 21. Nxb5 Nc5 {[%csl LRb3,LRd3,LRe4]} 22. Qe3 {[#] Threatens to win with Bxf6.} Bxb5 23. axb5 Qxe4 24. Qxe4 Nxe4 25. Bxf6 gxf6 26. Kg1 Rb8 27. Nd4 {And now Nc6 would win.} Rb7 28. Rc6 {An even fight not without its subleties.  Weighted Error Value: White=0.08 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.3"]
[White "Jumabayev, Rinat"]
[Black "Murzin, Volodar"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2631"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,18,19,13,20,10,33,30,45,43,58,53,56,52,50,44,41,33,47,37,86,67,85,86,99,96,96,93,75,0,0,0,0,0,0,0,0,0,0,0,0,-31,-31,-31,-38,-65,-38,-62,-39,-88,-96,-95,-96,-175,-178,-193,-180,-144,-117,-148,-62,-113,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 g6 5. e3 Bg7 6. Be2 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} O-O 7. O-O a5 8. Nc3 {[#] White is slightly better.} Bf5 $146 ({Predecessor:} 8... Na6 9. a3 Nc7 10. Rd1 Bg4 11. Ne5 Bxe2 12. Qxe2 Nd7 13. cxd5 Nxe5 14. dxe5 cxd5 15. Nxd5 Nxd5 {½-½ (26) Kubesa,D-Blecha,J (1915) Ostrava 2010}) 9. Qb3 Ra7 10. cxd5 cxd5 11. Bd2 Nc6 12. Rfc1 Ne4 13. Be1 ({Much weaker is} 13. Nxd5 e5 14. Bc4 exd4 $17) 13... e6 14. Bb5 Ne7 (14... h5 $14) 15. Ne5 $16 Nxc3 16. Qxc3 Nc8 17. Nd7 {White is more active.} Nd6 18. Qc5 ({Much worse is} 18. Nxf8 $6 Nxb5 19. Qc5 Bd3 20. Nxe6 fxe6 $11) 18... Nxb5 19. Nxf8 ({White should play} 19. Qxb5 $16 Re8 20. Rc5) 19... Bd3 $11 20. Nxe6 fxe6 21. a4 Bf8 $1 {A strong pair of Bishops.} 22. Qc8 Qxc8 23. Rxc8 Nd6 24. Rb8 Bc2 25. b4 (25. Rc1 $5 {[%cal Rc1c2]} Bxa4 26. Rc7 $11) 25... Nc4 26. bxa5 Kf7 $36 {[%mdl 2048] Black is pushing.} 27. Rd8 Be7 {[%mdl 1024] Black has compensation.} 28. Rh8 g5 {And now ...Bf8 would win.} (28... h5 $5 {[%cal Re7f8]} 29. Rh7+ Kf8 $15) 29. Rc1 (29. Rc8 $1 $15) 29... Bg6 $17 30. Rc8 Bd6 31. f3 (31. Rd8 $17 {was worth a try.} Ke7 32. Rg8) 31... Nxe3 $19 32. Rd8 Ke7 33. Rcc8 Nc4 {Inhibits Bd2.} 34. h4 {[#]} Ra6 ({Black should try} 34... e5 $1 $17 {[%cal Re5d4]} 35. dxe5 Nxe5 36. hxg5 Nc6) 35. hxg5 {[#]} (35. Rg8 $1 $15) 35... Nxa5 (35... e5 $1 $17 {[%cal Re5d4]} 36. dxe5 Nxe5) 36. Rg8 $11 {The position is equal.} Kf7 {To avoid Rg7+} 37. Rgd8 Ke7 {Inhibits Rd7+. Hoping for ...Nc6.} 38. Rg8 {Threatens to win with Rg7+.} Kf7 {To avoid Rg7+} 39. Rgd8 Ke7 {Prevents Rd7+. aiming for ...Nc6.} 40. Rg8 {Rg7+ is the strong threat.} Kf7 {Prevents Rg7+.  Weighted Error Value: White=0.11 (very precise) /Black=0.14 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.4"]
[White "Bjerre, Jonas Buhl"]
[Black "Ganguly, Surya Shekhar"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2586"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,121,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,77,77,78,85,75,75,84,87,83,90,64,66,75,42,47,36,22,27,16,12,10,8,13,0,31,3,28,26,42,25,67,64,312,294,313,318,307,0,921,910,29987,131,118,52,52,52,52,52,73,60,84,59,249,248,392,395,839,813,587,1926,1897,1775,1668,1845,1718,1651,3222,3143,2777,1243,29941,29944,29958,772,1164,0,29959,29959,29954,29960,29959,29962,29959,29961,29969,29972,29984,29985]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 dxc4 7. Bxc4 a6 8. O-O b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 9. Ba2 Bb7 10. Qe2 cxd4 {D40: Queen's Gambit Declined: Semi-Tarrasch with 5 e3.} 11. Rd1 {[%cal Re3d4]} b4 12. exd4 {[%cal Od4d5] Hoping for d5!} bxc3 {The position is equal.} 13. d5 $1 Nxd5 14. Rxd5 Qc7 15. Rd3 {[%cal Bd5d3,Bd3c3,Bc3c2,Bc2d2][%mdl 32]} Be7 16. Rxc3 {[#]} O-O $146 ({Predecessor:} 16... Bf6 17. Rc2 O-O 18. Be3 Rfd8 19. Rac1 Qd7 20. Bb6 Rdc8 21. Rd1 Qe8 22. Rcd2 Ne7 {½-½ (42) Manolache,M (2514)-David,A (2428) Mamaia 2021}) 17. Ng5 {[%cal Og5h7]} h6 {[#]} (17... Bf6 $11 {remains equal.} 18. Rc4 Qe5) 18. Nxf7 $1 $16 Rxf7 (18... Bf6 $2 19. Nxh6+ $1 {[%mdl 512]} Kh8 20. Rh3 $1 $18) 19. Qxe6 Raf8 {[#] ...Kh8 is the strong threat.} 20. Bxh6 $1 Bf6 21. Rc2 Kh7 22. Be3 {And now Rc5 would win.} Qd7 23. Qe4+ g6 24. Bxf7 {White is more active.} Rxf7 25. Rd2 {Inhibits Nd4.} Nd4 $1 26. Qf4 Qc6 $1 {[%csl Gb7][%cal Rc6g2]} 27. f3 g5 $1 28. Qg3 (28. Qg4 Nb3 29. Qf5+ Kh8 $17) 28... Nf5 {[%csl LRe3,LRg3]} 29. Qf2 Kg6 30. Rad1 Qc7 31. Rc2 Qb8 32. h3 $1 Be5 {This bishop pair is nice.} (32... Ba8 $11 {is more appropriate.}) 33. Ba7 $1 $14 (33. Rc5 Bd6 $11) 33... Bh2+ (33... Qe8 $14) 34. Kh1 $18 Qf4 35. Qb6+ Kg7 {[%cal Ob7f3]} 36. Qe6 $2 (36. Qd8 $1 $18 Bxf3 37. gxf3 Rxa7 38. Rxh2) 36... Bg3 $2 {[%mdl 8192]} (36... Bxf3 $11 37. Rd7 Ng3+ 38. Kxh2 Ne2+ 39. Kh1 Bxg2+ 40. Kxg2 Qg3+ 41. Kh1 Qf3+ 42. Kh2 Qg3+ 43. Kh1 Qf3+ 44. Kh2 Qg3+ 45. Kh1) 37. Rd7 Nd6 38. Bb8 $2 (38. Rcc7 {mates} Rxd7 39. Bd4+ $1 {[%mdl 512]} Kf8 40. Rxd7 Qf7 41. Rd8+ Ne8 42. Rxe8+ $1 {[%mdl 512]} Qxe8 43. Bc5+ Bd6 44. Bxd6+ Kg7 45. Be5+ Kh7 46. Qxe8) 38... Qa4 $16 {[#]} 39. Bxd6 $1 Rxd7 $14 40. Bxg3 $40 {[%mdl 128] White threatens Rc5 and mate. White attacks. The board is on fire.} Rd1+ 41. Kh2 Qxc2 42. Qe7+ Kg6 $1 {Threatens to win with ...Qb3. White now steadily converts the win.} 43. Qxb7 $16 {[%mdl 4096] Endgame KQR-KQB} Qb1 $2 (43... Qc1 $1 $14 44. Qe4+ (44. Qxa6+ Kh5 $16) 44... Kf7 45. Qf5+ Ke7 46. Qh7+ Ke6 47. Qe4+ Kf7 48. Qh7+ Ke6 49. Qg8+ Ke7 50. Qg7+ Ke6 51. Qg6+ Ke7 52. Qh7+ Ke6) 44. Qxa6+ $18 Kh5 (44... Kf7 $142 45. Qb7+ Kg6 46. Qc6+ Kh7 47. Qc7+ Kg6 48. Qb6+ (48. Be5 $2 {leads to mate.} Rh1+ 49. Kg3 Qe1+ 50. Kg4 Qh4#) 48... Kh7) 45. Be1 $1 {[%csl Gf3,Gh3][%cal Rg2g4]} (45. Be5 $2 {gets mated.} Rh1+ 46. Kg3 Qe1#) 45... Qxb2 $2 (45... Rxe1 $2 {is a self mate.} 46. g4+ Kh4 47. Qh6#) (45... Qg6 46. Qe2 Rd8 47. f4+ Kh6) 46. Qe6 {[%cal Oe1c3]} Qb8+ {[#]} 47. Kg1 $1 {[%csl Ge6,Gf3,Gh3][%cal Rg2g4]} Qa7+ {[#]} 48. Kf1 $1 {[%csl Ge6,Gf3,Gh3][%cal Rg2g4]} Rxe1+ 49. Qxe1 Qxa3 {KQ-KQ} 50. Qe5 {[%cal Oh3h4] Intending h4! and mate.} Qa6+ 51. Kg1 {White wants to mate with f4.} Kh6 52. Kh2 Qb6 53. Kg3 Qa6 54. Kg4 (54. h4 $142 gxh4+ 55. Kxh4 Kg6 56. f4 Kh7 57. Qf5+ Kh8 58. Kg5 Kg7 59. Qd7+ Kf8 60. f5) 54... Qc8+ 55. Kg3 (55. Qf5 $18 Qc4+ 56. Qe4 Qc8+ 57. Kg3) 55... Qa6 $1 56. h4 {White mates.} gxh4+ 57. Kxh4 Qb6 58. f4 {[%cal Bf3f4,Bf4f5][%mdl 32]} Kh7 59. f5 Qh6+ 60. Kg4 Qd2 61. Qe7+ {Weighted Error Value: White=0.31/Black=0.63} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.5"]
[White "Maurizzi, Marc`Andria"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2496"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,52,21,0,0,-13,-16,-16,-13,-19,-20,-17,0,0,0,0,9,7,20,30,30,28,22,0,0,-17,0,0,0,0,0,2,68,79,321,317,328,318,305,302,29982,29983,29999]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. e4 {7.Re1 is the recent fashion.} b5 {[%cal Bb7b5,Bb5c4][%mdl 32] D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 8. e5 bxc4 9. exf6 gxf6 {[#] The position is equal.} 10. dxc5 $146 ({Predecessor:} 10. Na3 Bb7 11. dxc5 Rg8 12. Qxd8+ Kxd8 13. Rd1+ Nd7 14. Ne1 Bxc5 15. Nxc4 Ke7 16. Be3 {0-1 (60) Malinin,Y (2335)-Dokutchaev,A (2425) Tula 1998}) 10... Qxd1 11. Rxd1 Bxc5 12. Nbd2 Bb7 13. Nxc4 Rg8 {[#] Hoping for ...Bxf3.} 14. Ne1 Ke7 15. b4 Bd5 16. bxc5 Bxc4 17. Rb1 {[#] And now Rb7+ would win.} Bb5 18. Rd6 Rc8 19. Ba3 Nc6 20. Nc2 Ke8 21. Ne3 Na5 (21... h5 $11) 22. Rb4 $14 {White is more active.} Rxc5 $2 {This move loses the game for Black.} (22... Nb7 $16 {was called for.}) 23. Rg4 $18 Rg5 24. h4 Rxg4 25. Nxg4 Rc8 $2 (25... Rd8 $18 26. Nxf6+ Ke7) 26. Rd1 {[%cal Rg4f6]} f5 27. Nf6# {Weighted Error Value: White=0.04 (flawless) /Black=0.63} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.6"]
[White "L'Ami, Erwin"]
[Black "Dardha, Daniel"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2622"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "188"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,188,25,38,8,10,0,0,13,31,7,4,10,39,3,25,8,35,16,37,0,0,0,21,-23,-19,-18,-22,-19,-9,-22,0,-18,-20,-42,0,0,0,0,0,0,0,-14,-7,-21,-18,-13,-14,-14,-16,-46,-22,-31,-18,-21,-29,-31,-25,-35,-31,-34,-27,-55,-52,-44,-65,-60,-62,-51,-59,-56,-23,-20,0,0,0,-28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,0,0,0,0,0,0,0,0,0,8,0,8,0,8,8,46,46,46,46,46,46,46,46,46,46,46,20,46,46,46,46,46,46,62,46,46,19,46,12,15,0,70,8,8,0,2,0,0,0,89,89,89,95,96,89,96,96,96,96,97,97,97,97,97,97,97,97,97,97,97,97,97,97,97,96,96,96,97,97,97,97,97,97,97,97,97]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 h6 5. Bf4 Bd6 6. Bg3 {D37: Queen's Gambit Declined: 5 Bf4.} O-O 7. e3 Bxg3 8. hxg3 {The position is equal.} Qe7 9. Qc2 Rd8 {[#]} 10. Rd1 $146 ({Predecessor:} 10. cxd5 exd5 11. Bd3 c5 12. O-O Nc6 13. dxc5 Qxc5 14. Nb5 Qb6 15. Nbd4 Bd7 16. Qb3 Qxb3 17. Nxb3 {0-1 (62) Sunilduth Lyna,N (2618)-Carlsen,M (2863) chess24.com INT 2020}) 10... b6 11. cxd5 (11. Ne5 {keeps more tension.} Bb7 12. g4 Nc6 13. g5 hxg5 14. cxd5 Nb4 15. Qb1) 11... exd5 12. Be2 Bb7 13. Qf5 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8e6,Be6g5][%mdl 32]} 14. Qf4 (14. g4 {seems wilder.} Ne4 15. Nxd5 Bxd5 16. Qxd5 Ndf6 17. Qe5) 14... Nf8 15. Nh4 {[#] Black must now prevent Nf5.} Bc8 16. Nf5 (16. g4 $142) 16... Bxf5 $11 17. Qxf5 Ne6 18. a3 c6 19. g4 Re8 20. Bf3 Ng5 21. O-O g6 (21... Rad8 $15 {is more appropriate.}) 22. Qf4 Rad8 23. b4 Kg7 24. Rc1 b5 25. Ne2 Rc8 26. Rc2 a5 27. Rb1 $1 axb4 28. axb4 Nd7 {[%cal Bf6d7,Bd7b6,Bb6c4][%mdl 32]} 29. Nc1 Nb6 (29... Ne6 $5 {[%cal Re6f4]} 30. Qg3 Nb6 $15) 30. Nd3 Nc4 {aiming for ...Ne6.} 31. Ra1 Ne6 {Pair of Knights!} 32. Qg3 Ra8 33. Rca2 Rxa2 34. Rxa2 Qb7 35. Kh2 Ra8 36. Rxa8 Qxa8 37. Ne5 Nd2 {[#] ...Nf1+ is the strong threat.} 38. Be2 {Inhibits Nf1+.} Ne4 39. Qf3 f6 40. Nd3 N6g5 41. Qf4 Ne6 {To avoid Qc7+} 42. Qf3 Qa2 43. Bf1 Nd2 {[%csl LRf1,LRf3]} 44. Qe2 Qc2 45. Kg1 Ng5 46. f3 Qc3 47. Kf2 Ne6 48. Qe1 {Hoping for Ke2.} Qc2 $1 49. Qc1 Ne4+ 50. Ke1 Qxc1+ 51. Nxc1 {[%mdl 4096] Endgame KBN-KNN} Nd6 52. Nd3 Nc4 53. Kf2 Kf7 54. Be2 Ke7 55. Bd1 Kd6 56. Bc2 g5 57. Ke2 Ng7 58. Nf2 Ne6 59. Bf5 Ke7 60. Bxe6 Kxe6 $14 {KN-KN} 61. e4 Nd6 62. Kd3 Nc8 63. Nd1 Ne7 64. Ne3 Ng6 {[%cal Oh6h5]} 65. Kd2 Nh4 66. Ke2 Ng6 {[%cal Oh6h5]} 67. Ke1 Ne7 68. Kd2 Nc8 69. Nd1 Ne7 70. Nc3 Kd6 71. Ke3 Ke6 72. Ne2 Nc8 (72... Ng6 $11) 73. Nc1 ({White should play} 73. Ng3 $14) 73... Nd6 $11 74. Nb3 Kd7 75. g3 Nc4+ 76. Ke2 Nd6 (76... dxe4 $11 {remains equal.} 77. fxe4 Kd6) 77. e5 $16 {White now steadily converts the win. White is better.} Ne8 78. Nc5+ Ke7 79. Nd3 {White is more active.} Ng7 80. exf6+ Kxf6 81. Ne5 Ne6 82. Nxc6 Nc7 83. Kd3 Na6 84. Kc3 Nc7 85. Ne5 Kg7 86. Nd3 Kf6 87. Nf2 Kf7 88. Nd1 Kf6 89. Ne3 Kg6 90. Kd3 Kf6 91. f4 Kg6 92. Ke2 Kf6 93. Kf3 Kg6 94. Nf5 Kh7 {Weighted Error Value: White=0.06 (flawless) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.25"]
[Round "9.7"]
[White "Shuvalova, Polina"]
[Black "Vogel, Roven"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2516"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,54,20,25,26,14,27,12,4,14,14,0,0,2,8,0,7,9,15,11,23,19,19,7,10,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O {[%cal Bh1f1,Bf1e1,Be1e5][%mdl 32]} Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 Nf5 {[%cal Bd6f5,Bf5h4,Bh4g6,Bg6f4,Bf4d3][%mdl 32]} 11. c3 d5 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 12. a4 a5 13. Bf4 c6 14. Nd2 {[#]} Bg5 $146 ({Predecessor:} 14... Be6 15. Qb3 b6 16. Nf3 c5 17. Be5 Be7 18. Rac1 Nd6 19. Bxd6 Bxd6 {1-0 (51) Sautto,D (2206)-Ortega,L (2456) Porto San Giorgio 2008}) 15. Be5 Nh4 (15... f6 $5 16. Bg3 Bh6 $11) 16. Nf3 Bg4 17. Be2 Bxf3 18. Bxf3 Ng6 19. Bg3 Bf4 20. Bxf4 Nxf4 {The position is equal.} 21. Qb3 Qd7 22. Re3 Rae8 23. Rae1 Nd3 24. Rd1 Nf4 25. Rde1 Nd3 26. Rd1 Nf4 27. Rde1 Nd3 {An even fight not without its subleties.  Weighted Error Value: White=0.04 (flawless) /Black=0.02 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.1"]
[White "Erigaisi Arjun"]
[Black "Shuvalova, Polina"]
[Result "1/2-1/2"]
[ECO "D50"]
[WhiteElo "2629"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,18,20,18,12,12,26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,24,8,4,10,11,7,9,7,6,-60,-41,-39,-31,-95,-96,-85,-79,-79,-79,-79,-79,-79,-77,-79,-79,-79]} 1. d4 d5 {[%cal Bd7d5,Bd5c4][%mdl 32]} 2. c4 e6 3. Nc3 Nf6 4. Bg5 dxc4 5. e3 c5 6. Bxf6 {D50: Queen's Gambit Declined: Dutch-Peruvian Gambit.} Qxf6 7. d5 a6 {[#]} 8. a4 $146 {Inhibits b5. White has an edge.} ({Predecessor:} 8. Nf3 Nd7 9. dxe6 Qxe6 10. Qa4 Rb8 11. Bxc4 Qf6 12. Be2 b5 13. Qe4+ Be7 14. Nd5 {½-½ (42) Predke,A (2666)-Anton Guijarro,D (2658) Riga 2021}) 8... Nd7 9. Bxc4 Nb6 10. Qb3 Nxc4 11. Qxc4 exd5 12. Nxd5 Qc6 ({Much less strong is} 12... Qe5 13. Nf3 Qd6 14. Qe4+ Be7 15. O-O-O $16 (15. Nxe7 Qxe7 16. Qxe7+ Kxe7 $11)) 13. Ne2 {[%cal Oe2d4]} Bd6 14. Nef4 O-O 15. O-O b5 16. Qe4 Bb7 17. Rfd1 {[%cal Od5f6]} Rad8 18. axb5 axb5 19. Ne7+ $1 Bxe7 20. Qxe7 Qc8 21. h3 h6 $1 22. b3 c4 23. Rdc1 (23. bxc4 $11 bxc4 24. Ne2) 23... Rfe8 $15 24. Qb4 {[%csl LRb5,LRc4][%cal Rb3c4]} g5 $36 {[%mdl 2048] Black fights for an advantage.} 25. Qxb5 gxf4 $17 {Black is better.} 26. Rxc4 Qd7 (26... Qb8 {is interesting.} 27. Rxf4 Rd5 28. Qa4 h5 29. Kh2 Ree5) 27. Qxd7 Rxd7 28. Rxf4 Rd3 29. b4 Rb3 30. Ra7 Bd5 31. Rd7 {Weighted Error Value: White=0.10 (very precise) /Black=0.01 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.2"]
[White "Jumabayev, Rinat"]
[Black "Bjerre, Jonas Buhl"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2631"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,114,12,21,0,0,0,0,0,0,-8,0,0,0,-8,6,10,15,1,0,16,10,0,0,0,0,-5,-4,-10,-8,-94,-94,-91,-82,-89,-80,-95,-55,-65,-65,-50,-53,-81,-99,-113,-112,-111,-108,-110,-104,-114,-114,-107,-112,-110,-108,-114,-112,-129,-127,-127,-122,-130,-120,-125,-120,-154,-162,-154,-139,-157,-162,-182,-182,-183,-139,-178,-149,-152,-174,-189,-92,-160,-156,-148,-154,-402,-375,-364,-370,-379,-362,-655,-655,-655,-655,-655,-655,-655,-655,-648,-601,-583,-583,-779,-703]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. Qc2 {E04: Open Catalan: 5 Nf3.} Nxd4 8. Nxd4 Qxd4 9. Nd2 {The position is equal.} c3 10. bxc3 Qc5 11. Rb1 Be7 {[#]} 12. Rb3 $146 ({Predecessor:} 12. Ne4 Nxe4 13. Bxe4 h6 14. c4 O-O 15. Be3 Qe5 16. Bxb7 Bxb7 17. Rxb7 Bg5 18. Ba7 Rfd8 19. f4 Qd6 20. fxg5 Rxa7 21. Rxa7 Qb6+ 22. e3 Qxa7 23. Qf2 {½-½ (23) Dubov,D (2683)-Duda,J (2758) Wijk aan Zee 2020}) 12... Qf5 13. Qxf5 exf5 14. Bxb7 Bxb7 15. Rxb7 Nd5 16. c4 O-O-O {[%cal Be8c8,Bc8b7,Bb7c6][%mdl 32]} 17. Ra7 Nb4 {[#] Strongly threatening ...Kb8.} 18. Nb3 {And now Bf4 would win.} Nc6 $1 19. Rxa6 Kb7 20. Rxc6 Kxc6 $17 21. Bb2 Bf6 $36 {[%mdl 2048] Black is on the roll.} 22. Bxf6 gxf6 {[%mdl 4096] Endgame KRR-KRN} 23. Rb1 f4 24. gxf4 Rhg8+ 25. Kf1 Ra8 {[%mdl 1024] Inhibits Na5+. Black has compensation.} 26. Rb2 Ra4 27. Rc2 Rga8 28. Nc1 Kc5 29. Nb3+ Kd6 30. Nc1 R8a5 31. e3 Rc5 32. Rd2+ Ke7 33. Nb3 Rcxc4 34. Nd4 Ra5 35. Kg2 Rd5 36. Rb2 Kd7 37. h4 c5 38. Rb7+ Kc8 39. Rb5 Kc7 40. Nb3 Kc6 41. Rb8 Ra4 {To avoid Na5+} 42. Nc1 Rd1 ({Black should try} 42... Rd2 $19 {aiming for ...Rc2.} 43. Rc8+ Kb6 44. Rb8+ Kc7) 43. Rc8+ Kb5 44. Ne2 Kb4 {To avoid Nc3. Black is more active.} ({And not} 44... Kc4 45. Ng3 $15) 45. Ng3 Rc1 ({Not} 45... Rxa2 46. Rb8+ Kc4 47. Kf3 $17) (45... c4 $19 {has better winning chances.} 46. Ne4 Rc1 47. Nxf6 Rxa2 48. Nxh7 c3) 46. Ne4 ({White should play} 46. a3+ Rxa3 47. Rc7) 46... c4 {[%cal Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 47. Nxf6 Rxa2 {[#] Threatens to win with ...c3.} 48. Kf3 $2 {White does not recover from this.} (48. Nd5+ $17 Kb3 49. Rb8+ Ka3 50. Rc8) 48... c3 $19 49. Nd5+ Kb3 50. Rb8+ Kc4 51. Nb6+ (51. e4 c2 52. Ne3+ Kd3 53. Rd8+ Kc3 54. Rc8+ Kb2 55. f5) 51... Kc5 {Hoping for ...c2. Black is clearly winning.} 52. Nd7+ Kd6 53. Ne5 c2 54. Rb6+ Kc7 55. Rc6+ Kb7 {White must now prevent ...Rd1.} 56. Rc3 Rd1 {...f5 is the strong threat.} 57. Rb3+ Ka6 {Weighted Error Value: White=0.24 (precise) /Black=0.04 (flawless)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.3"]
[White "Dardha, Daniel"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "E07"]
[WhiteElo "2533"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "34"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,34,31,0,28,13,9,0,16,-9,7,12,5,14,8,-12,5,0,11,-16,0,0,10]} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. Nc3 Nbd7 7. O-O dxc4 8. a4 {[%cal Ba2a4,Ba4a5,Ba5b6][%mdl 32]} c5 {E07: Closed Catalan: Main Line (5 Nf3 0-0 6 0-0 Nbd7).} 9. a5 Nd5 {The position is equal.} 10. Qa4 a6 {[#]} 11. dxc5 $146 ({Predecessor:} 11. Qxc4 b5 12. axb6 Bb7 13. e4 Nxc3 14. bxc3 cxd4 15. Bf4 Nxb6 16. Qxd4 Qxd4 17. Nxd4 Nd7 18. Rfb1 {½-½ (20) Rudenko,V (2398)-Broemme,S (2427) ICCF email 2016}) 11... Nxc5 12. Qxc4 b5 13. axb6 $1 Bb7 14. Qg4 Nf6 {[%mdl 1024] Black has compensation.} 15. Qc4 {Threatening Be3.} Nd5 16. Qg4 Nf6 17. Qc4 Nd5 {An interesting draw.  Weighted Error Value: White=0.13 (very precise) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.4"]
[White "Murzin, Volodar"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2519"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,85,22,52,49,40,52,60,36,38,45,51,58,79,68,93,88,110,41,41,27,69,65,53,21,16,13,13,22,22,20,26,25,25,0,0,0,0,0,0,0,0,0,0,8,38,29,20,26,30,10,16,0,0,0,0,0,10,9,15,13,45,43,53,14,21,7,25,14,21,20,24,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Bc5 8. c3 d6 9. Bg5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} h6 10. Bh4 Bb6 11. Nbd2 {White is slightly better.} g5 12. Bg3 {[#]} Nh7 $146 ({Predecessor:} 12... Na5 13. Bc2 Nh5 14. d4 Nxg3 15. hxg3 g4 16. Nh4 exd4 17. Qxg4 Qg5 18. Qe2 dxc3 19. bxc3 Qxg3 {0-1 (27) Hartono,E (1795)-Golubenko,A (2285) ICCF email 2018}) 13. a4 O-O 14. Re1 Kh8 15. Nf1 Ne7 {[#]} 16. Ne3 (16. d4 $1 $16) 16... Bxe3 $14 17. fxe3 f5 (17... bxa4 $1 $11 18. Rxa4 f5) 18. exf5 {Strongly threatening e4. White is more active.} Nxf5 19. Bf2 (19. Nxe5 $5 dxe5 20. Bxe5+ Nf6 21. Rf1 $14 (21. e4 Ng7 $15)) 19... Bxf3 20. Qxf3 Nd4 $1 21. Qd1 Nxb3 22. Qxb3 Qd7 23. e4 Nf6 24. axb5 axb5 25. Rxa8 Rxa8 26. d4 Kg7 27. c4 bxc4 28. Qxc4 Ng4 29. Bg3 {Hoping for h3.} Re8 30. h3 Nf6 31. dxe5 dxe5 32. Bf2 {[%cal Bg3f2,Bf2c5,Bc5b4,Bb4c3][%mdl 32]} Re7 33. Bc5 Rf7 34. Qe2 Qe6 35. Kh2 Nd7 36. Bb4 Nf6 37. Bc3 Re7 38. Rf1 Nd7 39. Qb5 Rf7 40. Rd1 Kh7 41. Qe2 Rg7 42. Qf3 Rf7 {Prevents Qf5+.} 43. Qe2 {Weighted Error Value: White=0.09 (flawless) /Black=0.08 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.5"]
[White "Warmerdam, Max"]
[Black "Maurizzi, Marc`Andria"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2599"]
[BlackElo "2496"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,93,16,9,14,7,11,12,15,21,7,8,7,31,16,54,48,52,42,60,43,39,3,17,13,34,0,18,6,3,7,39,33,37,27,42,42,34,44,57,50,44,42,39,33,106,36,50,31,54,22,25,8,11,0,27,0,16,0,33,31,27,0,0,0,18,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. b3 b6 7. O-O Bb7 8. Bb2 Nbd7 9. Nc3 c5 10. Ne1 {E17: Queen's Indian: 4 g3 Bb7 5 Bg2 Be7.} Ne4 11. cxd5 exd5 12. Rc1 Bf6 13. Nf3 Re8 {[#]} 14. e3 $146 ({Predecessor:} 14. Rc2 Nxc3 15. Bxc3 Rc8 16. dxc5 Bxc3 17. Rxc3 bxc5 18. e3 Qa5 19. Qa1 {½-½ (54) Sengul,C (2146)-Sulashvili,M (2499) Izmir 2008}) 14... a5 15. Re1 cxd4 16. Nxd4 Ndc5 17. Rc2 Qd7 18. Nce2 Be5 19. Nf3 Bxb2 20. Rxb2 Ba6 {[%cal Oe4f2] [#] White must now prevent ...Nxf2!} 21. Nc1 a4 22. Rc2 axb3 23. axb3 {[%cal Ba2b3,Bb3b4][%mdl 32]} Bb7 24. b4 Ne6 25. Ne2 Qa4 26. Qb1 Rec8 27. Rb2 Qa3 28. Rd1 h6 29. Nfd4 Nxd4 30. Rxd4 {[%cal Rg2e4]} Rc7 (30... Nf6 $14) 31. Rd1 (31. Bxe4 $16 dxe4 32. Kg2) 31... Qa4 32. Re1 Qa3 33. h4 Rc4 34. Rb3 Qa2 35. Rb2 Qa3 36. Rb3 Qa2 37. Rb2 Qa3 38. Rd1 Ra4 {[%cal Rc4b4]} 39. Rd3 Qa1 {[%cal Oc4c2] The position is equal.} 40. Rd1 {[%cal Bd3d1,Bd1b1,Bb1b6][%mdl 32]} Qa3 41. Rb3 Rcxb4 42. Rxa3 Rxb1 43. Rxb1 Rxa3 44. Rxb6 {[#] And now Bxe4 would win.} Ra1+ 45. Kh2 Nxf2 46. Rxb7 Ng4+ 47. Kh3 {Weighted Error Value: White=0.12 (very precise) /Black=0.07 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.6"]
[White "Vogel, Roven"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "D51"]
[WhiteElo "2452"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,126,22,20,2,21,27,15,17,16,16,18,17,17,12,22,17,17,1,28,8,8,9,17,-5,0,-7,0,-28,0,-22,0,-16,-10,-15,-7,-41,-41,-44,-47,-62,-53,-57,-50,-77,-67,-169,-85,-87,-87,-90,-78,-84,-89,-65,-69,-79,-89,-59,0,-99,-113,-89,-103,-83,-43,-51,-36,-41,-40,-50,-53,-48,-27,-17,-32,-57,0,-27,-28,-28,0,0,0,0,0,0,0,0,76,42,54,33,84,77,131,129,93,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bg5 c6 6. cxd5 exd5 7. Qc2 {D51: Queen's Gambit Declined: 4 Bg5 Nbd7 sidelines.} h6 8. Bh4 Be7 9. e3 Nh5 10. Bxe7 Qxe7 11. O-O-O Nhf6 12. Kb1 Nb6 13. Bd3 Be6 14. h3 Nfd7 15. Nd2 O-O-O 16. f4 {Threatens to win with f5.} g6 17. Rhe1 Kb8 18. g4 Nf6 19. Nb3 {[#]} Rhe8 $146 (19... h5 {is interesting.} 20. f5 Bc8 21. g5 Ne4 22. Nxe4 dxe4 23. Bxe4 Qxg5 24. Qh2+ Ka8) ({Predecessor:} 19... h5 20. f5 Bc8 21. g5 Ne4 22. Bxe4 dxe4 23. fxg6 fxg6 24. Qh2+ Qc7 25. Qxc7+ Kxc7 {½-½ (36) Menendez Rodriguez,G (2331)-Runting,T (2358) ICCF email 2019}) 20. a3 Ne4 21. Bxe4 dxe4 22. Nc5 Bd5 23. b3 f5 24. Rg1 Bf7 25. Kb2 Na8 {[%cal Bb6a8,Ba8c7,Bc7d5][%mdl 32]} 26. Na2 Nc7 27. gxf5 gxf5 28. Qd2 ({Better is} 28. Nb4 $15 Qd6 29. Rg7) 28... Rg8 (28... b6 $19 29. Nb4 Rd6 30. Nca6+ Nxa6 31. Nxa6+ Kb7) 29. Qb4 $17 {[%csl Gc5][%cal Rb4b7]} Nd5 $1 {[%csl LRb4,LRe3]} 30. Na6+ Kc8 31. Qxe7 Nxe7 32. N6b4 Bh5 (32... Kd7 {feels hotter.} 33. Nc3 Ke6 34. a4 Kf6 35. Rdf1 b6) 33. Rc1 Bf3 34. Nc3 Bg2 (34... Rxg1 $15 35. Rxg1 Rg8 36. Rxg8+ Nxg8) 35. Nc2 (35. d5 $1 $11) 35... h5 36. h4 {[%cal Od4d5]} Rg4 37. Ne1 Bh3 {[%cal Bg2h3,Bh3g4,Bg4f3][%mdl 32]} 38. Rh1 Rg3 39. Nc2 Bg4 40. Rcg1 {Prevents Rg2.} Rxg1 41. Rxg1 Ng6 42. Rh1 Bf3 43. Rh3 b6 (43... Rg8 $15) 44. Ne1 Bg4 45. Rh2 Kc7 46. a4 a5 47. Nc2 Ne7 48. Rd2 Ng6 49. Rh2 Bf3 {[#]} (49... Ne7 $11 {remains equal.}) 50. d5 $1 $16 cxd5 51. Nd4 {Hoping for Ne6+.} Kb7 {[#]} (51... Rd7 $1 $14) 52. Ncb5 $1 {Rc2 is the strong threat. Pair of Knights!} Ne7 (52... Bg4 $142) 53. Rc2 {aiming for Rc7+.} Rd7 {Inhibits Rc7+.} 54. Nxf3 {White is more active.} ({White should play} 54. Ka3 $16) 54... exf3 {[%mdl 4096] Endgame KRN-KRN. The position is equal.} 55. Nd4 Rd6 56. Nxf3 Nc6 57. Rg2 Re6 58. Rg7+ Kc8 59. Nd4 Nxd4 60. exd4 Re4 61. Rg5 {[%csl LRf5,LRh5]} Rxf4 62. Rxh5 Rxd4 63. Rxf5 Rxh4 {Weighted Error Value: White=0.12 (very precise) /Black=0.12 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.26"]
[Round "10.7"]
[White "Ganguly, Surya Shekhar"]
[Black "Zhu, Jiner"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2627"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,71,32,25,33,27,32,60,54,54,42,63,30,64,64,134,129,141,142,149,150,151,162,277,283,266,287,258,284,314,342,307,328,322,317,289,223,170,109,296,270,387,317,256,162,164,41,56,52,37,9,208,207,302,299,291,270,258,254,249,233,152,129]} 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 e6 5. e4 Nxc3 6. bxc3 c5 7. Bc4 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} a6 8. a4 {[#]} b6 $146 ({Predecessor:} 8... Be7 9. O-O O-O 10. d4 Qc7 11. Qe2 Bd7 12. Be3 Nc6 13. Rfb1 Na5 14. Bd3 Bc6 {1-0 (42) Alfaro de Hombre,J (2132)-Turowski,P (2123) ICCF email 2014}) 9. O-O {White is slightly better.} Bb7 10. Re1 Qc7 11. Qe2 {White is more active.} Be7 12. d4 O-O ({Black should play} 12... cxd4 $14 13. cxd4 O-O) 13. d5 $16 exd5 14. exd5 Bd6 15. Bd3 {[%cal Od3h7]} Nd7 {[%cal Oc5c4]} (15... Bxd5 $2 16. Bxh7+ $1 Kh8 17. Bc2 $18) 16. c4 (16. Qe4 g6 $16) 16... Rae8 (16... Rfd8 $142 17. Rb1 (17. Qe4 Nf8 $16) 17... Nf8) 17. Qxe8 $18 Rxe8 18. Rxe8+ Nf8 19. Bf5 $1 b5 20. axb5 axb5 21. Bd2 $1 {And now Ba5 would win.} (21. cxb5 g6 22. Bh3 (22. Be4 $2 Qd7 $17) 22... f5 $16) 21... b4 22. Bg5 b3 23. Rb1 Ba6 24. Nd2 (24. Bd3 $18) 24... g6 $2 (24... h6 $16) 25. Bh3 f6 (25... Bxh2+ $2 26. Kh1 Bf4 27. Be7 $18) (25... f5 {might work better.} 26. g3 (26. Rxb3 Bxh2+ 27. Kh1 Bf4 $16) (26. Nxb3 Bxc4 27. g3 Bxd5 $17) 26... Kf7) 26. Bh6 {Black must now prevent Be6+.} Kf7 (26... Bxh2+ $2 27. Kf1 Bd6 28. Be6+ Kh8 29. Rxb3 $18) 27. Re3 Bxh2+ 28. Kh1 ({White has to play} 28. Kf1 $1 $18 {Strongly threatening g3.} Bf4 29. Bxf4 Qxf4 30. Ke1) 28... Bf4 $14 29. Bxf4 {Chess con chili.} Qxf4 30. Rbxb3 f5 $2 {[#]} (30... Qxf2 $11 {and Black stays safe.} 31. Ne4 (31. Rbd3 f5 $11) 31... Qf1+ 32. Kh2 f5) 31. Kg1 $1 $18 Bxc4 (31... Qd4 $142 32. Rbd3 Qa1+ 33. Kh2 Qb2) 32. g3 Qd4 33. Rb7+ Kg8 34. Nxc4 Qxc4 {[#]} 35. Re8 $1 {aiming for d6.} Qxd5 36. Rbb8 {Weighted Error Value: White=0.18 (very precise) /Black=0.39} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.1"]
[White "L'Ami, Erwin"]
[Black "Erigaisi Arjun"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2622"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,46,16,22,32,24,28,35,38,46,28,28,36,46,39,18,35,60,62,22,26,30,40,-8,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 {E04: Open Catalan: 5 Nf3.} 7. Bxb4 $1 {7.Bxb4 scores better than 7.0-0.} cxb4 8. Ne5 O-O {[%cal Ob8c6] White is slightly better.} 9. a3 Nd5 10. O-O bxa3 11. Nxa3 c3 {[#]} 12. b3 $146 ({Predecessor:} 12. Qc2 f6 13. Nec4 cxb2 14. Qxb2 a5 15. Nb5 f5 16. e3 Nc6 17. Nc3 Ra6 18. Rfc1 {½-½ (72) Oreopoulos,K (2442)-Lednev,V (2461) ICCF email 2012}) 12... Nc6 13. Nxc6 bxc6 14. Qd3 a5 15. Rfc1 {[%mdl 1024] White has compensation.} Ba6 16. Qd1 (16. Nc4 $14 {is more appropriate.}) 16... Ra7 {The position is equal.} 17. e3 Rd7 {[%cal Oe6e5]} 18. Nc4 Bxc4 19. bxc4 Nb4 20. Qa4 e5 21. Bxc6 Nxc6 22. Qxc6 exd4 23. exd4 Rc7 {Weighted Error Value: White=0.10 (very precise) /Black=0.04 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.2"]
[White "Bjerre, Jonas Buhl"]
[Black "Murzin, Volodar"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2586"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,95,27,31,12,13,18,23,30,35,37,39,37,45,40,50,46,39,40,87,33,56,43,79,38,40,41,46,38,47,46,35,44,56,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-25,0,0,20,20,193,0,0,0,24,0,0,0,0,0,0,-28,291,291,372,288,306,290,546,368,513,507,535,546,503,490,558,545,530,475]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Be2 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5.} Nbd7 8. O-O Bd6 9. g3 {White has an edge.} Qe7 10. c5 $5 {[%mdl 4] Leaves trodden paths.} Bc7 11. b4 a6 12. a4 {[#]} O-O $146 ({Predecessor:} 12... e5 13. Bd2 O-O 14. Nxg6 hxg6 15. b5 exd4 16. exd4 axb5 17. axb5 Rxa1 18. Qxa1 Nxc5 19. dxc5 d4 20. Bf3 {½-½ (20) Malhotra,A (2171)-Vibbert,S (2313) Phoenix 2015}) 13. Nxg6 hxg6 14. f4 Rfb8 (14... Nh7 $14 {is more appropriate.}) 15. Ba3 (15. Bd3 $16) 15... Qd8 16. Qc2 b6 17. cxb6 {White is much more active. Black has bad knights.} (17. Rab1 $16) 17... Nxb6 $14 18. a5 Nc4 19. Bxc4 dxc4 20. Nd1 $1 Bd6 21. Qxc4 Qf8 {[%cal Rd6b4]} 22. Rb1 (22. Rf2 $14) 22... c5 $11 23. dxc5 Bxc5 24. Rb3 Ba7 25. Nf2 Qe8 26. Rfb1 Nd5 27. Bc1 (27. Qxa6 $2 Rb5 28. Rc1 Bxe3 $19) 27... Rb5 28. Bd2 Rc8 29. Qe2 e5 {And now ...exf4 would win.} 30. Qf3 exf4 31. gxf4 Rc2 32. Rd3 Qe6 33. Rd1 Kh7 $2 {[#]} (33... Nxb4 $2 34. Rd8+ Kh7 35. Qa8 $18) (33... Rc8 $1 $11) 34. Kh1 $2 (34. Ne4 $1 $18 {[%cal Re4g5] Threatens to win with Ng5+.} Nf6 35. Ng5+ Rxg5+ 36. fxg5) 34... Nf6 35. Bc3 Rh5 {[%cal Oc2f2]} (35... Nd5 $5 {[%cal Rd5c3]} 36. Be5 (36. Rxd5 Rxd5 37. Rxd5 Rxf2 $11) 36... Bxe3 $16) 36. Bxf6 gxf6 37. Rd6 Qa2 (37... Qxe3 38. Qxe3 Bxe3 39. Ng4 $18) 38. Rf1 Kg7 39. Rd7 ({Don't go for} 39. Rxa6 $2 {[#]} Qc4 $1 40. Kg2 Qxa6 $19) (39. Rd8 $5 {[%cal Rf3a8]} Rd2 40. Re8 $11) 39... Bxe3 {[%mdl 8192]} 40. Qxe3 $18 Qc4 {[%cal Rc4f1]} 41. Rfd1 {aiming for Qa7.} Rh4 42. Kg1 Re2 $2 {[#]} (42... Qxf4 43. Rxf7+ Kh6 44. Qxf4+ Rxf4) 43. R7d4 $1 {[%mdl 512] Qg3 is the strong threat.} Qb5 (43... Qc2 44. Qg3) 44. Qd3 {White is clearly winning.} Qe8 45. Re4 Rxe4 46. Qxe4 ({Less strong is} 46. Nxe4 Rxf4 47. Re1 Qe5 $16) 46... Qb8 47. Rd4 Qc7 48. Kg2 {Weighted Error Value: White=0.16 (very precise) /Black=0.38} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.3"]
[White "Nguyen, Thai Dai Van"]
[Black "Vogel, Roven"]
[Result "1-0"]
[ECO "D17"]
[WhiteElo "2609"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "169"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,169,-5,34,27,34,28,47,24,51,31,20,25,33,24,27,16,31,25,26,21,50,36,34,23,11,14,85,52,61,21,91,83,77,86,91,91,99,54,52,22,24,23,39,31,25,23,63,63,63,57,63,63,63,63,63,63,63,62,62,62,62,62,62,62,62,62,64,64,66,65,67,70,103,65,93,93,93,93,93,93,93,93,101,93,119,119,115,115,119,109,120,120,120,75,109,109,125,121,127,127,128,128,128,127,128,128,128,128,141,141,144,138,151,135,135,135,135,128,128,127,128,105,105,102,102,95,229,229,229,226,219,212,242,236,254,246,229,233,297,230,211,199,281,189,175,176,176,176,325,176,330,127,127,0,331,244,475,475]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 {6...Nbd7 scores better than 6...e6.} 7. Nxc4 Nb6 (7... Qc7 {looks sharper.} 8. Bg5 e5 9. e3 Bb4 10. Bd3 Be6) 8. e3 {D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5.} Nxc4 9. Bxc4 e6 10. O-O {White is slightly better.} Be7 11. a5 b5 12. axb6 axb6 13. Rxa8 Qxa8 14. f3 O-O 15. e4 Bg6 16. Be3 $36 {[%mdl 2048] White fights for an advantage.} Qa5 {[#]} 17. Qa1 $146 ({Predecessor:} 17. Qb3 Qb4 18. Ra1 b5 19. Qxb4 Bxb4 20. Be2 Rc8 21. Rc1 Ra8 22. Nd1 Ra6 23. Nf2 {1-0 (72) Buran,J (2264)-Pacl,V (2179) Czech Republic 2012}) 17... Qb4 18. Qa2 b5 19. Be2 Bd8 (19... Rd8 $11) 20. Rd1 Bb6 {[%cal Oe6e5]} 21. Bf2 Nd7 (21... h6 $11) 22. Qa3 $16 Qxa3 23. bxa3 Rc8 24. Rc1 {[%cal Oc3b5]} Ra8 25. Nb1 (25. d5 $16 cxd5 26. exd5 (26. Bxb5 Bxf2+ 27. Kxf2 Nf6 $16)) 25... f5 $14 26. d5 (26. Rxc6 {is interesting.} fxe4 27. Bxb5 exf3 28. Rd6 Rb8 29. Rxd7 Bxb1 30. gxf3 Bxd4 31. Bxd4 Rxb5 32. Rxg7+ Kf8 33. Ra7) 26... Bxf2+ 27. Kxf2 exd5 28. exd5 cxd5 29. Bxb5 Ne5 30. Re1 Nc4 31. a4 $1 Nb6 32. Nc3 d4 33. Ne2 Nxa4 34. Nxd4 Nc3 35. Bc4+ Bf7 36. Bxf7+ Kxf7 37. Nxf5 {[%mdl 4096] Endgame KRN-KRN} Ra2+ 38. Kf1 Kf6 39. Ne3 Nb5 40. Nd5+ Kg6 41. Re6+ Kf5 42. Re7 Ra7 43. Re4 Rd7 44. g4+ Kg6 45. Re5 Nd4 46. Kf2 Kf7 47. Nf4 Re7 48. Rh5 Kg8 49. Rd5 Nc6 {Inhibits Rd8+.} 50. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Ra7 51. Kg3 Ne7 52. Rd6 Kf7 53. Ne6 (53. h5 $142) 53... h6 54. Nf4 Rb7 55. h5 Ng8 56. Ne6 Re7 57. Nd8+ Ke8 58. Nc6 Rd7 {To avoid Rd8+} 59. Re6+ Kf7 60. Re3 {[#] Ne5+ is the strong threat. White is more active.} Rd6 61. Ne5+ Kf8 62. Ra3 {Black must now prevent Ra8+.} Nf6 63. Kf4 Rd8 64. Kf5 Kg8 65. Nc6 Re8 66. Nd4 Nh7 67. Ra7 Ng5 {Inhibits Ne6.} 68. f4 Rf8+ 69. Ke5 Nf7+ (69... Re8+ $16 {keeps fighting.} 70. Kd5 Ne4) 70. Kd5 $18 Rd8+ 71. Ke4 Nd6+ 72. Kf3 Nf7 73. Nc6 Re8 74. Ne7+ Kf8 75. Nf5 {[%cal Oa7f7]} Rb8 76. Kg3 Rb3+ 77. Kf2 {[#] aiming for Ra8+.} Rb8 {Inhibits Ra8.} (77... Rd3 $142 78. Ke2 Rd5) 78. Kg2 Rb2+ 79. Kh3 {Hoping for Ra8+.} Rb3+ 80. Kh4 {Strongly threatening Ra8+.} Rb8 {Prevents Ra8.} (80... Rd3 $142 81. Rc7 Rd8) 81. Rc7 (81. Ra6 $142) 81... Ra8 $2 (81... Rd8 {was necessary.} 82. Rc6 Rd7) 82. Rb7 $2 (82. Rc6 $18 {is the precise move to win.}) 82... Rd8 $16 83. Ra7 $2 (83. Ne7 $16) 83... Rb8 $1 $18 84. Ra6 {Threatens to win with Rg6.} Rc8 $2 (84... Nd8 85. Kg3 Rb3+ 86. Kh4 Rb8) 85. Rg6 {Weighted Error Value: White=0.07 (flawless) /Black=0.13 (very precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.4"]
[White "Zhu, Jiner"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2478"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,115,28,37,36,20,24,10,13,39,20,31,1,30,24,60,38,29,39,34,47,40,33,31,37,50,47,69,33,28,-66,-54,-155,-156,-146,-144,-144,-87,-98,-91,-88,-47,-92,-73,-100,-31,-31,-33,-42,-4,-7,-6,-7,0,0,86,84,79,79,122,122,123,124,125,125,125,125,125,24,24,24,24,24,24,24,24,24,24,16,16,16,16,16,28,9,9,9,9,9,9,10,10,10,10,10,10,12,16,12,12,12,12,12]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Bxd5 10. exd5 g6 11. Qd2 Bg7 12. O-O-O Nbd7 13. Be2 Rc8 (13... b5 $5 {[%cal Rd7b6]}) 14. Kb1 Nb6 15. Na5 {[#]} Nbxd5 $146 ({Predecessor:} 15... Qc7 16. c4 Nbd7 17. h4 e4 18. Bd4 O-O 19. Rc1 Rfe8 20. Rhe1 Ne5 21. Qb4 exf3 22. gxf3 {1-0 (48) Robson,R (2670)-Bok,B (2640) chess24.com INT 2020}) 16. Nxb7 Qc7 {[#]} 17. Bc4 $1 {This bishop pair is nice.} Qxb7 18. Bxd5 Nxd5 19. Qxd5 Rc6 20. Rd3 Qc7 21. Bd2 {White is more active.} O-O $1 {[%cal Oe5e4]} 22. Bb4 (22. Ba5 $11 Qd7 23. Rc3 Rxc3 24. Bxc3) 22... e4 $1 $15 23. fxe4 (23. Rd2 Bxb2 24. Kxb2 Rb8 25. Qxe4 d5 26. Qxd5 (26. Rxd5 $2 Rc4 $19) 26... Rxb4+ 27. Ka1 (27. Kc1 $2 Rcb6 $19) 27... Rxc2 28. Rxc2 Qxc2 $19) (23. Rb3 $15) 23... Rxc2 $17 24. Bc3 Rxc3 25. bxc3 Rb8+ (25... Bxc3 $142 {White must now prevent ...Rb8+.} 26. Qb3 Rb8 27. Rxc3 Rxb3+ 28. Rxb3 Qe7) 26. Kc2 {[#]} Rb5 $1 {[%mdl 1024] Black has strong compensation.} ({Reject} 26... Qb6 $6 27. Qb3 Qf2+ 28. Rd2 $15) 27. Qa8+ (27. Qxd6 $2 Qc4 28. Qxa6 {[#]} Rb2+ $3 {[%mdl 512]} 29. Kxb2 Qxa6 $19) 27... Kh7 28. Rb1 $1 ({Don't blunder} 28. Qxa6 $2 Ra5 29. Qxd6 Rxa2+ 30. Kb3 Qa5 $19) 28... Ra5 {[%cal Od6d5]} 29. Rb2 Ra3 ({Black should play} 29... Qc4 $17 {...Ra3 is the strong threat.} 30. Qb7 Rg5) 30. e5 $1 $15 Bxe5 {[%cal Ra3c3]} 31. Qf3 $1 Qc4 32. Kb1 Kg7 {[%cal Re5c3]} (32... Bxc3 $2 33. Rc2 Qb4+ 34. Kc1 $18) 33. Qd5 Qxd5 34. Rxd5 Bxh2 (34... Rxc3 $11 {remains equal.} 35. Rb3 Rc4) 35. Rb3 $16 Rxb3+ 36. axb3 {[%mdl 4096] Endgame KR-KB} Kf6 (36... h4 $142) 37. Kc2 h4 38. Kd3 g5 {[%cal Bg6g5,Bg5g4,Bg4h3,Bh3h2][%mdl 32]} 39. Ra5 g4 40. Rxa6 Ke5 41. b4 (41. Ra7 $16 Ke6 42. c4) 41... Bg1 $11 42. Ke2 h3 $1 43. gxh3 gxh3 {aiming for ...h2.} 44. Kf3 h2 $1 45. Kg2 f5 46. b5 f4 47. c4 f3+ 48. Kh1 Ke6 49. b6 {And now b7 would win.} f2 {The position is equal.} 50. Ra1 Kd7 51. Rb1 {Threatens to win with b7.} Kc8 52. b7+ Kb8 53. Kg2 f1=Q+ 54. Rxf1 {Hoping for Rb1. The board is on fire.} (54. Kxf1 {is a self mate.} h1=Q 55. Rb3 Bc5+ 56. Ke2 Qe4+ 57. Kd2 Qxc4 58. Rd3 Bb4+ 59. Ke3 d5 60. Rd1 Qe4+ 61. Kf2 Qc2+ 62. Kf3 Qxd1+ 63. Kf4 Kxb7 64. Kf5 Qf3+ 65. Kg5 Bd2+ 66. Kg6 Qf8 67. Kh7 Qf7+ 68. Kh8 Bc3#) 54... Kxb7 55. Rf5 Kc6 56. Rh5 Bd4 57. Kxh2 {Black should prevent Rd5.} Be5+ 58. Kg2 {Black had all chances to win.  Weighted Error Value: White=0.12 (very precise) /Black=0.10 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.5"]
[White "Van Foreest, Lucas"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2530"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,43,37,38,35,41,41,34,25,33,35,0,4,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. O-O b5 7. Ne5 Nd5 8. e4 Nf6 9. a4 Bb7 10. axb5 axb5 11. Rxa8 Bxa8 12. Nc3 c6 13. d5 {[#] Black must now prevent dxe6.} Be7 {[%cal Rc6d5] E04: Open Catalan: 5 Nf3.} 14. dxe6 fxe6 15. Qe2 $1 O-O {White is slightly better.} 16. Bh3 {[%mdl 1024] White has compensation.} Qe8 $5 {[%mdl 4] A promising side line.} 17. Nf3 {[%cal Be5f3,Bf3g5,Bg5e6][%mdl 32] [#]} Na6 $146 {The position is equal.} ({Predecessor:} 17... Bb7 18. Bf4 Na6 19. Ng5 Nc5 20. Nxe6 Bc8 21. Nc7 Qh5 22. Bg2 Qxe2 23. Nxe2 Ncxe4 {0-1 (36) Ulybin,M (2521)-Robson,R (2466) Hoogeveen 2008}) 18. Ng5 e5 19. Ne6 Rf7 $1 20. Ng5 {[#] And now Be6 would win.} Rf8 21. Ne6 Rf7 $1 22. Ng5 {Weighted Error Value: White=0.05 (flawless) /Black=0.01 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.6"]
[White "Shuvalova, Polina"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "E21"]
[WhiteElo "2516"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,123,17,4,0,6,0,0,0,0,16,0,0,0,-1,-15,0,-23,-25,-25,-21,-20,-12,-12,-12,-36,-6,-20,0,0,0,-67,-84,-82,-67,-69,-68,-111,-111,-132,-115,-122,-133,-141,-141,-147,-139,-134,-140,-134,-95,-93,-38,-54,-58,-166,-172,-175,-175,-333,-340,-334,-216,-176,-177,-329,-329,-283,-225,-12835,-12836,-12836,-12837,-12837,-7972,-12838,-12838,-12841,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 {[%cal Bg1f3,Bf3d4,Bd4b5,Bb5d6][%mdl 32]} O-O 5. Bg5 c5 6. Rc1 h6 {E21: Nimzo-Indian: 4 Nf3.} 7. Bh4 cxd4 8. Nxd4 d5 $1 {The position is equal. The main line 8...d5 scores better than 8...Nc6.} 9. cxd5 Bxc3+ 10. bxc3 Qxd5 {[#]} 11. Bxf6 $146 ({Predecessor:} 11. e3 Nc6 12. Bxf6 gxf6 13. Qg4+ Qg5 14. Qxg5+ fxg5 15. Nxc6 bxc6 16. Rb1 Bd7 17. Kd2 {½-½ (33) Pechac,J (2562)-Vocaturo,D (2632) Terme Catez 2021}) 11... gxf6 12. e3 Rd8 13. Nb5 Qxd1+ 14. Rxd1 Rxd1+ 15. Kxd1 Na6 {To avoid Nc7} 16. Nd6 Nc5 17. Bb5 a6 18. Be8 Bd7 19. Bxd7 {Black must now prevent Bc8.} (19. Bxf7+ Kf8 20. Bh5 Rd8 $17) 19... Rd8 $36 {[%mdl 2048] Black has the initiative.} 20. Nc4 Rxd7+ $15 {[%mdl 4096] Endgame KRN-KRN} 21. Kc2 Ne4 $1 22. f3 Rc7 23. Kb3 {[#]} (23. Rb1 $15) 23... Nxc3 $1 $17 {[%mdl 512]} 24. Nd6 (24. Nb6 Ne2) 24... Nd5 {Strongly threatening ...Rc3+.} 25. e4 {[#]} Rd7 $1 26. Ne8 {[#]} (26. exd5 Rxd6) 26... Kf8 $1 27. exd5 Kxe8 28. dxe6 fxe6 {KR-KR} 29. Kc3 {Inhibits Rd2.} Ke7 30. Rb1 f5 (30... b5 $17 31. a4 bxa4) 31. Rb6 Kf6 32. f4 ({White should try} 32. a4 $15) 32... h5 $19 {[%cal Bh6h5,Bh5h4,Bh4h3][%mdl 32]} 33. a4 h4 $1 {[%cal Oh4h3] Threatens to win with ...h3!} 34. Rb2 $2 (34. h3) 34... h3 35. g3 Rc7+ 36. Kd3 Rc1 {[%cal Ob7b6] Hoping for ...b6!} 37. Rxb7 {[#]} (37. Ke3 {was worth a try.}) 37... Rh1 $1 38. Rh7 (38. Rb2 Ra1 39. Rb8 Ra3+ 40. Kc4 Ra2 $19) 38... Rxh2 39. Kc4 $2 (39. a5) 39... Rh1 40. Kb4 h2 41. Ka5 {[#]} e5 $1 ({Inferior is} 41... Kg6 42. Rh8 $17) 42. fxe5+ Kxe5 43. Rh4 Kf6 $2 ({Black should play} 43... Kd5 $19 {...Ke5 is the strong threat.} 44. Kxa6 Kd6) 44. Rh8 Kg5 {aiming for ...Kg4.} 45. Rg8+ $1 Kh5 46. Rg7 $1 Re1 {( -> ...Kh6)} 47. Rh7+ Kg4 48. Rxh2 Re6 49. Rf2 Rf6 50. Rf4+ Kxg3 51. Rxf5 $1 Rxf5+ {Mate.} 52. Kxa6 $11 {KR-KP} Rf1 53. a5 Kf4 54. Kb7 Rb1+ 55. Kc6 Ra1 56. Kb6 Ke5 57. a6 Kd6 58. Kb7 Rb1+ 59. Kc8 Ra1 60. Kb7 Kd7 61. a7 Rb1+ 62. Ka8 Kc7 {Weighted Error Value: White=0.35/Black=0.11 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.28"]
[Round "11.7"]
[White "Maurizzi, Marc`Andria"]
[Black "Dardha, Daniel"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2496"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,51,53,60,54,57,58,58,39,43,50,48,88,31,98,84,155,153,337,347,654,657,627,618,870,869,2264,2302,2162,2065,1997,1304,29992,29993,29995,29996]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Bg5 h6 6. Bh4 d5 7. e3 Nbd7 8. cxd5 exd5 9. Bd3 c5 10. O-O {[%cal Oc3d5]} Bxc3 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 11. bxc3 c4 12. Bc2 Qa5 {White is slightly better.} 13. Qc1 Re8 14. Nd2 {[#]} Qc7 $146 ({Predecessor:} 14... b5 15. a3 Bb7 16. Qb2 Bc6 17. Rfe1 Qb6 18. f3 Re7 19. Bf2 Rae8 20. Nf1 Qa5 {1-0 (40) Fedorovsky,M (2458)-Heinz,A (2436) Germany 2010}) 15. f3 (15. Re1 $16) 15... b5 ({Better is} 15... Rxe3 $14 16. Ne4 Re2) 16. e4 {[%cal Be3e4,Be4e5][%mdl 32]} (16. Bg3 Qb6 $14) 16... b4 ({Black should try} 16... dxe4 17. fxe4 Bb7) 17. e5 $16 (17. cxb4 $6 c3 $16) 17... g5 $2 {Loses the game.} (17... Nh7 $16) 18. exf6 $18 gxh4 $2 {[#]} (18... Nxf6 19. Bg3 Qc6 20. cxb4 Nh5) 19. Ne4 $1 {[%mdl 512]} dxe4 20. fxe4 {[%cal Bf3e4,Be4e5,Be5f6][%mdl 32] Hoping for e5.} Nxf6 21. Rxf6 {Threatens to win with e5.} Re6 22. e5 {White threatens Qxh6 and mate.} b3 23. axb3 cxb3 24. Bxb3 {[#] White wants to mate with Qxh6.} Rxf6 25. exf6 Kh7 26. Bc2+ {Weighted Error Value: White=0.06 (flawless) /Black=0.95} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.1"]
[White "Erigaisi Arjun"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2629"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,30,17,18,10,12,2,16,9,17,20,29,26,25,28,45,0,13,13,13,13,10,14,9]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. a3 {D37: Queen's Gambit Declined: 5 Bf4.} b6 7. e3 {7.Qc2 is the modern continuation.} Bb7 8. cxd5 Nxd5 9. Nxd5 Bxd5 10. Rc1 c5 (10... Nc6 $2 11. Bb5 e5 12. dxe5 $16 (12. Bxc6 Bxc6 13. Nxe5 Bb7 $16)) 11. dxc5 bxc5 {[#]} 12. Bc4 $5 $146 {[%mdl 8] An interesting novelty.} (12. Bd3 $14) ({Predecessor:} 12. Bd3 Nd7 13. O-O Qb6 14. Qc2 h6 15. Nd2 Bf6 16. e4 Bc6 17. Nc4 Qb7 18. b4 {0-1 (28) Shimanov,A (2626)-Meier,G (2639) Chess.com INT 2018}) 12... Bxc4 {The position is equal.} 13. Qxd8 Rxd8 14. Rxc4 Nd7 15. Ke2 f6 {Weighted Error Value: White=0.07 (flawless) /Black=0.04 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.2"]
[White "Bjerre, Jonas Buhl"]
[Black "Zhu, Jiner"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2586"]
[BlackElo "2478"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,86,19,15,24,12,15,12,14,20,16,21,18,13,12,14,18,8,12,13,13,10,16,9,33,19,36,30,32,34,24,0,0,0,0,0,10,11,10,10,25,25,25,26,29,31,32,19,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. g3 cxd4 7. Nxd5 Qxd5 8. Qxd4 Qb5 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} 9. e4 Qb4+ 10. Bd2 Nc6 11. Qxb4 Bxb4 12. Rc1 Bxd2+ 13. Kxd2 Ke7 14. Bb5 Bd7 15. Rc5 f6 {[#]} 16. Rhc1 $146 {[%cal Rb5c6]} ({Predecessor:} 16. Bxc6 Bxc6 17. Nd4 Bd7 18. Rc7 Rab8 19. Rhc1 Rhc8 20. Ke3 Rxc7 21. Rxc7 e5 22. Ne2 {½-½ (34) Ruck,R (2530)-Lenic,L (2644) Mali Losinj 2019}) 16... e5 17. Ne1 {[%cal Bf3e1,Be1d3,Bd3c5][%mdl 32]} Rhd8 18. Ke3 Rac8 19. Nd3 a6 20. Ba4 b5 21. Bb3 Nd4 22. Bd5 Rxc5 23. Nxc5 Rc8 24. b4 Ne6 25. Bxe6 Bxe6 $11 {[%mdl 4096] Endgame KRB-KRN} 26. f4 exf4+ 27. gxf4 g6 28. h4 Rc7 29. Rc3 Rc6 30. Ra3 Bc8 {The position is equal.} 31. e5 h6 32. Ke4 fxe5 33. Kxe5 Rf6 34. Ke4 Rf5 35. Re3 Kf7 36. Kf3 a5 37. a3 axb4 38. axb4 g5 39. hxg5 hxg5 40. Nd3 gxf4 41. Nxf4 Bb7+ 42. Kg4 Bc8 43. Kf3 Bb7+ {Weighted Error Value: White=0.02 (flawless) /Black=0.03 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.3"]
[White "Jumabayev, Rinat"]
[Black "Shuvalova, Polina"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2631"]
[BlackElo "2516"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,79,10,13,21,6,19,14,23,16,31,12,41,-53,-8,-5,0,0,-11,-1,0,-35,-19,-24,-30,-29,-41,-38,0,-3,-3,-8,0,0,0,0,38,29,167,177,158,162,181,185,195,160,225,104,116,102,114,120,251,243,351,338,393,394,428,418,1521,1052,970,905,12835,12835,12832,12832,12829,2856]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bg5 h6 7. Bh4 a5 {[#] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Na3 $146 ({Predecessor:} 8. Nbd2 Ba7 9. O-O g5 10. Bg3 O-O 11. a3 Nh7 12. Kh1 Kh8 13. b4 h5 14. b5 Ne7 15. Bxe5+ dxe5 16. Nxe5 {0-1 (34) Adhiban,B (2672)-Vidit,S (2727) Kolkata 2021}) 8... Bxa3 9. bxa3 Ne7 {The position is equal.} 10. Bxf6 gxf6 11. Nh4 (11. O-O {feels hotter.} Rg8 12. g3 Bg4 13. Re1 Ng6 14. d4) 11... d5 12. Bb3 ({White should try} 12. exd5 $14 Nxd5 13. Qf3) 12... Qd6 (12... dxe4 $15 13. Qh5 (13. dxe4 Qxd1+ 14. Bxd1 Ng6 $15) 13... Rf8 14. dxe4 (14. Ba4+ Bd7 $17) 14... Qd3) 13. O-O $11 Bd7 {[%cal Bc8d7,Bd7c6,Bc6d5][%mdl 32]} 14. Qf3 {[%cal Rb3d5]} a4 15. Bc2 (15. Bxd5 c6 16. Bc4 b5 $17) 15... O-O-O 16. d4 Bc6 17. Rfe1 Kb8 18. exd5 Bxd5 19. Qe3 {[%cal Rd4e5]} Nc6 (19... Qxa3 {with more complications.} 20. dxe5 fxe5 21. c4 Qxe3 22. Rxe3 Bxc4 23. Rxe5 Nc6) 20. Bxa4 Qxa3 21. Bb3 Bxb3 22. axb3 Qxb3 {[%cal Re5d4]} 23. dxe5 fxe5 24. Qe4 {Inhibits Qc4. Reb1 is the strong threat.} Qd5 (24... Qxc3 $11 {and Black has nothing to worry.} 25. Qa4 Kc8) 25. Qa4 $18 {[%csl Ga1][%cal Ra4a8][%mdl 1024] White has strong compensation.} Kc8 26. Nf5 $1 (26. Red1 $6 Qe6 $14) 26... Rhe8 {[#]} 27. Reb1 $1 (27. Nxh6 Qe6 28. Ng4 f5 $14) 27... Nb8 28. Rd1 $40 {[%mdl 128] White attacks with force.} (28. Nxh6 $6 e4 $16) 28... b5 {[#]} (28... Qc5 $16 29. Nxh6 Rxd1+ 30. Rxd1 b5) 29. Rxd5 (29. Qg4 $1 $18 {[%cal Rf5d6] and the rest is easy.} Qe6 30. Rdb1) 29... bxa4 $16 30. Rxd8+ (30. Ra5 Re6 $14) 30... Rxd8 31. Nxh6 $18 {[%mdl 4096] Endgame KRN-KRN} Rd3 (31... Rd5 $16) 32. h4 {[%cal Bh2h4,Bh4h5,Bh5h6,Bh6h7][%mdl 32]} ({Don't play} 32. Nxf7 $6 Rxc3 33. h4 (33. Nxe5 a3 $16) 33... Rc4 $18) 32... Rxc3 (32... f6 $142 33. Ng8 (33. Rxa4 Rd8 $18) 33... Rd8) 33. Rxa4 ({Not} 33. Nxf7 Rc4 $16) 33... Kd7 34. Nxf7 Nc6 35. h5 {Hoping for h6.} Ke6 (35... Ke7 $142 36. Ng5 Rc1+ 37. Kh2 Kf6) 36. Ng5+ {White is clearly winning.} Kf5 {[#]} 37. h6 $1 {Black must now prevent h7.} Ne7 {[#]} (37... Rb3 38. h7) 38. h7 $1 Ng6 (38... Rc1+ 39. Kh2) 39. Nf3 {White threatens Nh4+ and mate.} Kf6 40. Rg4 {Weighted Error Value: White=0.12 (very precise) /Black=0.36} (40. Ra8 $142 Rxf3 41. Rg8) 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.4"]
[White "Murzin, Volodar"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2519"]
[BlackElo "2599"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,74,28,8,49,53,74,102,94,11,13,19,19,-18,-19,-171,-171,-171,-171,-171,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Bxf6 {11.c3 is more fashionable.} Bxf6 12. c4 Nd4 {B33: Sicilian: Pelikan and Sveshnikov Variations.} (12... b4 $1 $11 {was preferrable.} 13. Nc2 O-O) 13. cxb5 $14 Bb7 14. Nc3 {Pair of Knights!} O-O {White is better.} 15. Bd3 (15. bxa6 $16 Bc8 16. Bd3) 15... axb5 16. Naxb5 d5 $1 {[#] ...dxe4 is the strong threat.} 17. exd5 e4 $1 {[#]} 18. Nxe4 $146 ({Don't blunder} 18. Bxe4 $2 Nxb5 19. Nxb5 Re8 $19) (18. Bc4 $11 {and White stays safe.} Nxb5 19. Nxb5 (19. Bxb5 Qa5 $15)) ({Predecessor:} 18. Bc4 Nxb5 19. Bxb5 Qa5 20. a4 Bxc3+ 21. bxc3 Qxc3+ 22. Ke2 Rfd8 23. d6 Ba6 24. Bxa6 Rxa6 25. Rc1 {½-½ (31) Boros,D (2502)-Konnyu,J (2370) Banska Stiavnica 2011}) 18... Nxb5 $19 19. Nxf6+ Qxf6 20. Bxb5 {[#] aiming for 0-0.} Ba6 $2 (20... Rfd8 $19 21. O-O Rxd5) 21. Bxa6 $11 {The position is equal.} Qxa6 22. f3 $1 Rfe8+ 23. Kf2 Qb6+ 24. Kg3 Qd6+ 25. Kf2 $1 {Threatens to win with Qd4.} ({Not} 25. Kh3 $2 Re5 26. g4 h5 $17) 25... Qc5+ 26. Kg3 {Hoping for Qd2.} Qd6+ 27. Kf2 $1 {Strongly threatening Qd4.} ({Wrong is} 27. Kh3 $2 Re5 28. g4 h5 $19) 27... Qc5+ 28. Kg3 Ra6 {( -> ...Rg6+)} 29. Re1 Rg6+ 30. Kh3 Rh6+ 31. Kg3 Rg6+ 32. Kh3 Rh6+ 33. Kg3 Rg6+ 34. Kh3 Rh6+ 35. Kg3 Rg6+ 36. Kh3 Rh6+ 37. Kg3 Rg6+ {Weighted Error Value: White=0.21 (precise) /Black=0.10 (very precise)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.5"]
[White "Dardha, Daniel"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2533"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,106,0,0,0,0,2,18,14,44,10,17,16,14,-29,-9,-12,-8,-8,-1,-31,-31,-31,-31,-38,-31,-74,-21,-16,-18,-21,-8,-68,-48,-112,-23,-69,-58,-76,-25,-42,0,-88,0,-74,-64,-92,-56,-102,0,-48,-43,-116,14,0,0,-42,-45,-45,-25,-98,-104,-100,-108,-157,-103,-227,-212,-207,-198,-299,-314,-326,-334,-327,-327,-429,-392,-535,-543,-555,-548,-937,-937,-1247,-1220,-1112,-1014,-1360,-1284,-29971,-29972,-29986,-29987,-29987,-29987,-29987,-29988,-29993,-29994]} 1. c4 e5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Ne7 5. e3 c6 6. Nge2 {A21: English Opening: 1...e5 2 Nc3.} d5 7. cxd5 cxd5 8. d4 {The position is equal.} e4 9. b3 Nbc6 10. O-O O-O {[#]} 11. a4 $146 (11. Nf4 {is superior.}) ({Predecessor:} 11. Ba3 Re8 12. Bxe7 Rxe7 13. Nf4 Be6 14. a3 a6 15. Nxe6 fxe6 16. b4 Rc8 17. Na4 {0-1 (66) Zorn,N-Lautenbach,W freechess.de 2016}) 11... a5 12. Ba3 Nb4 13. Qd2 Nec6 14. Rfc1 Re8 15. Nb5 Bf5 16. Bxb4 axb4 17. Rc5 (17. Nf4 $15) 17... Bf8 (17... g5 $17) 18. Nf4 $1 $11 Bxc5 19. dxc5 Re5 {[%cal Od5d4]} 20. Nd4 ({Of course not} 20. Nd6 b6 21. Nxf5 gxf5 22. cxb6 Qxb6 $15) ({White should play} 20. Rc1 $11) 20... Rb8 21. h3 (21. a5 $15) 21... h5 ({Black should try} 21... Bd7 $17 22. Nb5 Be6) 22. Rd1 (22. a5 $1 $11) 22... Qe7 23. Rc1 $1 ({Don't blunder} 23. Nxf5 $2 Rxf5 24. Rc1 (24. Nxd5 $2 Rxd5 25. Qxd5 Rd8 $19) 24... Rd8 $19) 23... Qd7 (23... Bc8 $17) 24. Qb2 {[#] Hoping for Nxc6.} Qe7 (24... Qc7 $15) 25. Qd2 $17 Qd7 (25... Bc8 $17) 26. Kh2 (26. Qb2 $11 Qe7 27. Qd2) 26... Kh7 27. Nb5 Be6 28. Nd4 Bf5 (28... h4 $17) 29. Bf1 (29. Nb5 $1 $11 {might be stronger.}) 29... Qe7 $15 30. a5 (30. Bb5 $15 Bd7 31. h4) 30... Nxa5 (30... Bd7 $17 31. Nxc6 bxc6) 31. Qxb4 $11 Qc7 {[%cal Oh5h4]} 32. Rd1 (32. Qc3 $11 Nc6 33. b4) 32... Nc6 $15 33. Qc3 Be6 34. Kg1 (34. Ndxe6 $11 fxe6 35. h4) 34... Nxd4 $17 35. Qxd4 Rf5 36. Ra1 {[#]} (36. Ne2 $142) 36... Qe5 (36... h4 $142 $1 37. g4 Rxf4 38. exf4 Qxf4) 37. b4 {Now White is beyond hope.} (37. Ne2 $17) 37... Qxd4 $19 38. exd4 h4 {Threatens to win with ...g5.} 39. Ra7 (39. Be2 $142) 39... hxg3 40. fxg3 g5 41. Nxe6 fxe6 {[%cal Bf7e6,Be6e5,Be5d4,Bd4d3][%mdl 4128] Endgame KRR-KRB} 42. Be2 Kg6 43. b5 Rff8 44. Bg4 Kf6 {aiming for ...Ra8.} 45. Kf2 e5 46. Ke3 Ra8 47. Rxb7 Ra3+ 48. Ke2 exd4 {...Kg6 is the strong threat.} 49. Rb6+ Kg7 {Black mates.} 50. Rb7+ Kh8 51. c6 Ra2+ 52. Ke1 d3 53. Bd1 Rh2 {Weighted Error Value: White=0.59/Black=0.18 (very precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.6"]
[White "Ganguly, Surya Shekhar"]
[Black "L'Ami, Erwin"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2627"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,102,12,8,11,16,14,20,12,16,14,9,14,7,14,0,0,-91,-69,-64,-45,-66,-57,-50,-62,-58,-67,-58,0,-10,-6,-29,0,0,0,0,7,0,0,0,0,0,0,-8,-8,-16,-8,-8,-8,-8,-8,-12,0,-13,0,0,0,-8,-15,-20,-38,-121,-116,-302,-156,-129,-61,-363,-362,-387,-321,-316,-325,-314,-246,-257,-254,-282,-274,-272,-267,-583,-581,-786,-770,-771,-767,-624,-547,-747,-739,-29967,-1081,-1017,-937]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 d6 6. Na4 Bb6 {C50: Hungarian Defence and Giuoco Pianissimo.} 7. a3 O-O 8. O-O h6 {The position is equal.} 9. h3 {9.Re1 is a critical line.} Re8 10. b4 Be6 11. Bxe6 Rxe6 {[#]} 12. Nxb6 $146 ({Predecessor:} 12. c4 Nd4 13. Bb2 Nxf3+ 14. Qxf3 Nd7 15. Nxb6 axb6 16. a4 Rg6 17. Kh2 c5 18. b5 {½-½ (39) Angermann,I (1817)-Krammel,J (1699) GER email 2017}) 12... axb6 13. c4 {[#]} (13. b5 $11 Ne7 14. a4) 13... Nxb4 $1 $17 14. Bxh6 {[#]} Nxd3 {[%cal Of6e4]} 15. Ng5 Nc5 (15... gxh6 16. Nxe6 fxe6 17. Qxd3 $16) 16. Nxe6 Nxe6 17. Be3 Nxe4 18. Qd5 Nf6 (18... N6c5 $15) 19. Qxb7 $11 Ra4 20. Rfc1 Qa8 (20... Qe8 {seems wilder.} 21. Qf3 e4 22. Qd1 Qc6 23. h4 Nd7) 21. Qxa8+ Rxa8 22. a4 Ne4 23. Ra3 f5 {[%cal Bf7f5,Bf5f4][%mdl 32]} 24. f3 N4c5 25. Rca1 Nb7 26. g4 f4 27. Bf2 g5 28. Kg2 Na5 29. Rc1 Kf7 30. h4 gxh4 31. Bxh4 e4 32. fxe4 Nc6 33. Rh1 Ne5 {[%csl LRc4,LRg4]} 34. Be1 Ng5 35. Rf1 ({White should try} 35. a5 $15) 35... f3+ $17 36. Kg3 $2 (36. Kg1 $17 {is a better defense.}) 36... Kg6 ({Inferior is} 36... Nxe4+ 37. Kf4 Nc5 38. Bf2 $15) (36... Nxc4 37. Raxf3+ Nxf3 38. Rxf3+ Kg8 39. a5 $17) ({Black should play} 36... Rh8 $19 37. c5 bxc5) 37. a5 bxa5 {Black is much more active.} (37... Nxe4+ $17 38. Kf4 Ng5) 38. Rxa5 $2 {[%mdl 8192]} ({Only move:} 38. Bc3 $1 $15) 38... Rf8 $19 39. Kf2 Nxg4+ {Pair of Knights!} 40. Kg3 {[#]} Ne5 41. Kf2 Nxe4+ ({Weaker is} 41... Nxc4 42. Rg1 Nxa5 43. Bd2 $17) 42. Ke3 Ng5 43. Ra4 {[%cal Oc4c5]} Ng4+ 44. Kd3 {[%cal Oc4c5]} f2 45. Ba5 $2 (45. Bxf2 {is tougher.} Nxf2+ 46. Ke2) 45... c5 46. Ra2 Rf3+ 47. Ke2 Re3+ 48. Kd1 Ne4 49. Bd2 Rd3 {( -> ...Ne3+)} 50. Ke2 {To avoid Ne3} Rb3 (50... Rxd2+ $142 51. Rxd2 Ng3+ 52. Kf3 Nxf1 53. Rxd6+ Kg5 54. Rd5+ Kh4 55. Rd6 Nfh2+ 56. Ke4 f1=Q 57. Kd5 Ne3+ 58. Kc6 Qxc4 59. Rd8 Nhg4 60. Rd6 Qa4+ 61. Kb6 Qb4+ 62. Kc6 Qa4+ 63. Kb6 Ne5 64. Kb7 {[#]} Nd5 $1 {[%mdl 512]} 65. Rh6+ Kg5 66. Rd6 Qb5+ 67. Kc8 Qe8+ 68. Kb7 Qe7+ 69. Rd7 Qxd7+ 70. Ka6 Qc8+ 71. Ka5 Qb7 72. Ka4 Qb4#) 51. Bf4 Kf5 {Weighted Error Value: White=0.47/Black=0.23 (precise)} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.29"]
[Round "12.7"]
[White "Vogel, Roven"]
[Black "Maurizzi, Marc`Andria"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2452"]
[BlackElo "2496"]
[Annotator "RC"]
[PlyCount "97"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. c4 {[%emt 0:00:04]} e6 {[%emt 0:00:29]} 2. Nc3 {[%emt 0:00:42]} d5 {[%emt 0:00:20]} 3. d4 {[%emt 0:00:10]} a6 {[%emt 0:00:18]} 4. cxd5 {[%emt 0:01:15]} exd5 {[%emt 0:00:04]} 5. Nf3 {[%emt 0:00:09]} Nf6 {[%emt 0:00:04]} 6. Bg5 {[%emt 0:00:07]} Be6 {[%emt 0:00:04]} 7. Bxf6 {[%emt 0:00:11]} Qxf6 {[%emt 0:00:05]} 8. Qb3 {[%emt 0:00:07]} Ra7 {[%emt 0:00:05]} 9. a3 {[%emt 0:00:09]} b5 {[%emt 0:00:19]} 10. Qc2 {[%emt 0:09:59]} Bf5 {[%emt 0:08:05]} 11. Qd2 {[%emt 0:03:11]} c6 {[%emt 0:00:33]} 12. g3 {[%emt 0:02:16]} Bd6 {[%emt 0:04:59]} 13. Bg2 {[%emt 0:00:56]} O-O {[%emt 0:00:46]} 14. O-O {[%emt 0:02:21]} Re8 {[%emt 0:02:57]} 15. Nh4 {[%emt 0:02:12]} Rae7 {[%emt 0:14:35]} 16. f3 {[%emt 0:07:11]} Bc8 {[%emt 0:03:08]} 17. f4 {[%emt 0:12:55]} b4 {[%emt 0:04:44]} 18. axb4 {[%emt 0:00:44]} Bxb4 {[%emt 0:00:24]} 19. Rf2 {[%emt 0:08:16]} Qd6 {[%emt 0:04:50]} 20. Nf3 {[%emt 0:01:42]} f6 {[%emt 0:00:44]} 21. Ne1 {[%emt 0:04:07]} a5 {[%emt 0:05:02]} 22. Nd3 {[%emt 0:03:28]} Ba6 {[%emt 0:01:25]} 23. Bf3 {[%emt 0:01:35]} Bc4 {[%emt 0:04:32]} 24. Qc2 {[%emt 0:06:30]} Nd7 {[%emt 0:05:34]} 25. Nxb4 {[%emt 0:07:33]} axb4 {[%emt 0:00:44]} 26. Nb1 {[%emt 0:16:48]} Nb6 {[%emt 0:07:25]} 27. Qd1 {[%emt 0:01:41]} Re3 {[%emt 0:06:58]} 28. Nd2 {[%emt 0:01:02]} b3 {[%emt 0:00:34]} 29. Nf1 {[%emt 0:01:08]} R3e7 {[%emt 0:00:37]} 30. Qd2 {[%emt 0:02:27]} Qb8 {[%emt 0:02:55]} 31. g4 {[%emt 0:01:43]} Ra7 {[%emt 0:02:07]} 32. Rb1 {[%emt 0:00:50]} Ra2 {[%emt 0:03:26]} 33. Ng3 {[%emt 0:00:19]} Na4 {[%emt 0:00:29]} 34. Kg2 {[%emt 0:04:41]} Qd6 {[%emt 0:01:11]} 35. f5 {[%emt 0:00:39]} Ra8 {[%emt 0:02:31]} 36. Rff1 {[%emt 0:04:50]} Qa3 {[%emt 0:02:35]} 37. Qe3 {[%emt 0:00:05]} Nxb2 {[%emt 0:00:28]} 38. Qe6+ {[%emt 0:01:33]} Kh8 {[%emt 0:02:22]} 39. Qxc6 {[%emt 0:00:37]} Rd8 {[%emt 0:01:49]} 40. Nh5 {[%emt 0:03:44]} Qe7 {[%emt 0:02:36]} 41. Nf4 {[%emt 0:05:28]} Ra6 {[%emt 0:11:11]} 42. Qc5 {[%emt 0:00:28]} Qxc5 {[%emt 0:00:29]} 43. dxc5 {[%emt 0:00:10]} Na4 {[%emt 0:00:15]} 44. Rfc1 {[%emt 0:02:21]} Nxc5 {[%emt 0:07:59]} 45. Nxd5 {[%emt 0:00:39]} Bxd5 {[%emt 0:00:06]} 46. Rxc5 {[%emt 0:00:34]} Bg8 {[%emt 0:00:49]} 47. Rb5 {[%emt 0:00:14]} Ra3 {[%emt 0:00:47]} 48. Rc1 {[%emt 0:04:04]} Ra7 {[%emt 0:02:20]} 49. h4 {[%emt 0:03:04]} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.1"]
[White "Maurizzi, Marc`Andria"]
[Black "Erigaisi Arjun"]
[Result "0-1"]
[ECO "E21"]
[WhiteElo "2496"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,125,7,12,10,6,3,13,10,12,6,13,5,7,2,16,13,0,0,0,2,0,37,-37,-37,-35,0,0,0,0,0,-37,-9,-14,-16,-17,0,0,0,0,0,0,0,0,8,10,10,5,10,9,9,0,7,7,14,0,2,2,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-92,-91,-204,-213,-323,-253,-225,-202,-270,-285,-650,-474,-1534,-147,-152,0,-974,-618,-12846,543,-12847]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Bg5 {[%cal Bc1g5,Bg5h4,Bh4g3][%mdl 32]} c5 6. Rc1 h6 {E21: Nimzo-Indian: 4 Nf3.} 7. Bh4 cxd4 8. Nxd4 d5 $1 {The position is equal. The main line 8...d5 scores better than 8...Nc6.} 9. cxd5 Bxc3+ $5 {[%mdl 4] A promising side line.} 10. Rxc3 g5 11. Bg3 {[#]} Qxd5 $146 ({Predecessor:} 11... Ne4 12. Ra3 Qxd5 13. e3 e5 14. Nb5 Qxd1+ 15. Kxd1 Nc6 16. Bd3 Rd8 17. Ke2 Bf5 {½-½ (17) Vullhorst,W-Kyhos,A (1701) ICCF email 2007}) 12. f3 {To avoid Ne4. aiming for e4.} e5 13. Nb3 Qxd1+ 14. Kxd1 e4 15. Nd2 Re8 16. Nxe4 ({White should play} 16. h4 $14) 16... Nxe4 $15 17. fxe4 Nc6 18. e3 Rxe4 19. Bd3 Re8 20. Bb5 Rd8+ 21. Kc1 Nb4 22. Bc4 Bf5 23. Rf1 Be6 24. Bxe6 fxe6 25. Kb1 Rf8 26. Rfc1 Nc6 27. Rb3 Rf7 28. Rd1 Rd8 29. Rxd8+ Nxd8 $11 {[%mdl 4096] Endgame KRB-KRN} 30. a3 Kf8 31. Kc2 Nc6 32. Kd2 Kg7 33. Ke2 Kg6 34. Rd3 h5 35. Rd6 h4 36. Be1 ({Don't blunder} 36. Rxe6+ $2 Kf5 37. Rxc6 bxc6 $19) 36... Kf6 37. h3 Ke7 38. Rd1 e5 39. b4 Ke6 40. b5 Ne7 41. Rd8 Nd5 42. Ra8 b6 43. Bd2 Nf6 44. a4 Ne4 {Hoping for ...Rf2+.} 45. Be1 {Prevents Rf2+.} Kd5 46. Rc8 Ke6 47. Rc6+ Kd5 48. Rc8 Ng3+ 49. Kd3 e4+ 50. Kc3 Nf1 51. Rg8 Rc7+ 52. Kb3 Nxe3 {[%cal Og5g4]} 53. Rxg5+ (53. Bc3 $11) 53... Kd4 $17 {Black is more active.} 54. a5 (54. Rg8 $17 {keeps fighting.}) 54... bxa5 $19 55. g3 (55. Bxh4 $142 Nd5 56. Bf2+ e3 57. Rxd5+ Kxd5 58. Bxe3) 55... hxg3 56. Rxg3 {[#]} Nd5 $1 {Strongly threatening ...e3.} 57. Bxa5 Rc5 58. Ka4 (58. Bd8) 58... e3 {[%cal Be4e3,Be3e2][%mdl 32]} 59. Rg7 (59. Rg8 $142 e2 60. Be1) 59... Nb6+ $2 (59... Kd3 $19 {is more deadly. Threatens to win with ...Rc1.} 60. Rg3 Rc1) 60. Kb4 $17 {Rg4+ is the strong threat.} Nd5+ $2 (60... Rd5 $17 61. Rxa7 Nc8) 61. Ka4 $1 $19 e2 {And now ...Nc3+ would win.} 62. Rxa7 {[#]} Rc7 $4 {[%mdl 8192]} 63. Kb3 $4 {[%mdl 8192] Weighted Error Value: White=0.32/Black=0.33} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.2"]
[White "Nguyen, Thai Dai Van"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "D39"]
[WhiteElo "2609"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,34,15,19,11,38,35,33,42,34,39,34,35,37,26,33,35,35,11,35,34,39]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 6. e4 h6 7. Bxf6 Qxf6 8. Bxc4 c5 9. O-O {Nb5 is the strong threat. D39: Queen's Gambit Declined: Ragozin Defence with 5 Bg5 dxc4.} cxd4 $1 {9...cxd4 scores better than 9...0-0.} 10. Nb5 {[#] Strongly threatening Nc7+.} Qe7 {Inhibits Nc7+.} 11. Qxd4 O-O 12. Nxa7 Bc5 13. Nxc8 Rxc8 14. Qd3 Nc6 15. Qe2 Rd8 16. Rad1 Rxd1 17. Rxd1 Rd8 {[#]  Weighted Error Value: White=0.04 (flawless) /Black=0.06 (flawless)} {Predecessor:} 18. Rxd8+ $146 Qxd8 19. g3 Nd4 20. Nxd4 Qxd4 21. Kg2 g5 22. a3 h5 23. h3 Kf8 24. a4 {½-½ (37) Fridman,D (2608)-Meier,G (2628) Dortmund 2021} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.3"]
[White "Shuvalova, Polina"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2516"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,33,10,21,24,25,12,25,22]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. c4 Bb4+ 11. Ke2 f5 12. Nf2 Ba6 13. Kf3 Ne7 14. Be3 Bc5 15. Bxc5 {B45: Sicilian Four Knights.} Qxc5 16. Qa4 {[#]} Qb6 $146 {[%cal Og7g5]} ({Predecessor:} 16... Bb7 17. h4 Qb6 18. Qa3 c5+ 19. Kg3 O-O 20. Rd1 Rfd8 21. Be2 Rab8 22. Rd2 Nc6 {1-0 (37) Esipenko,A (2716)-Abasov,N (2656) Krasnaya Polyana 2021}) 17. c5 {An interesting draw.} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.4"]
[White "L'Ami, Erwin"]
[Black "Jumabayev, Rinat"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2622"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,77,20,17,22,24,12,0,14,0,13,0,22,22,36,56,41,44,75,50,66,54,42,59,68,62,60,16,16,12,14,8,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-9,0,0,0,0,0,0,0,0,302,300,300,296,302,262,313,307,308,279]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. b3 a5 {7...b6 gains popularity. E06: Closed Catalan: Early deviations.} 8. Nc3 b6 9. Nd2 $5 {[%mdl 4] A promising side line.} b5 {The position is equal.} 10. cxb5 cxb5 11. Nxb5 Qb6 {[#]} 12. Nc3 $146 ({Predecessor:} 12. a4 Nc6 13. e4 Ba6 14. e5 Nd7 15. Nf3 Na7 16. Re1 Nxb5 17. axb5 Bxb5 18. h4 {1-0 (53) Jumabayev,R (2637)-Motylev,A (2639) Krasnaya Polyana 2021}) 12... Qxd4 13. Bb2 {[%cal Oc3d5] [#] Nxd5! is the strong threat.} Qb6 14. e4 {[%cal Re4d5]} Ba6 15. Re1 {[%cal Re4d5]} dxe4 16. Ndxe4 Ra7 $1 17. Na4 Qd8 18. Nxf6+ Bxf6 19. Qxd8 (19. Bxf6 $14 Qxd1 20. Rexd1 (20. Raxd1 gxf6 21. f4 Bb5 $14) 20... gxf6 21. Rac1) 19... Rxd8 $11 20. Bxf6 gxf6 21. Rac1 Rd2 22. Red1 Rc7 23. Ra1 Rxd1+ 24. Rxd1 Be2 25. Re1 Bb5 26. Nb6 Na6 27. Bf1 Bxf1 28. Kxf1 {[%mdl 4096] Endgame KRN-KRN} Nb4 29. Re2 Rc1+ 30. Re1 Rc6 31. Nc4 a4 32. Re2 Kg7 33. Rd2 h5 34. Kg2 Nxa2 $2 {[%mdl 8192]} 35. Rxa2 $18 {White has a decisive advantage.} axb3 36. Ra4 h4 37. g4 Rc5 {[#]} 38. Rb4 $1 Kg6 39. Nd2 {Weighted Error Value: White=0.04 (flawless) /Black=0.24 (precise)} 1-0

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.5"]
[White "Warmerdam, Max"]
[Black "Dardha, Daniel"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "2599"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,19,20,22,23,32,60,60,60,17,16,17,21,12,21,0,-14,0,0,0,9,6,41,58,50,44,62,41,92,74,67,28,27,21,18,1,28,0,0,0,0,0,0,0,0,-22,95,101,112,112,112,112,111,106,130,-100,-100,-99,-99,-99,-100,-108,-7,-7,0,-16,-16,-16,0,0,8,0,0,-407,-22,-22,-22,-36,-36,-29972,-29974,-29974,-29975,-29979,-29980,-29986,-29987,-29987,-29988]} 1. e4 {CB} e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 Bb4+ 6. Bd2 {C24: Bishop's Opening: 2...Nf6.} Bxd2+ 7. Qxd2 dxe4 8. Nxe5 {White is slightly better.} O-O {[#]} 9. Nc3 $146 (9. Nxf7 $14 Rxf7 10. dxe4) ({Predecessor:} 9. dxe4 Qe7 10. Qf4 Nh5 11. Bxf7+ Kh8 12. Qg3 Rxf7 13. Nxf7+ Qxf7 14. Qd6 Be6 15. Nc3 {½-½ (31) Wei,Y (2734)-Ding,L (2782) Baku 2015 CBM 169 [CB]}) 9... Qe7 10. d4 Be6 11. O-O-O Nbd7 12. Rhe1 Bxb3 13. Nxd7 Qxd7 14. axb3 Qf5 15. h3 h5 {Prevents g4.} 16. g4 $1 hxg4 17. hxg4 Nxg4 18. Rxe4 {[%cal Be1e4,Be4f4,Bf4f5,Bf5h5][%mdl 32]} Rae8 (18... Nxf2 $2 19. Rf4 Qxf4 20. Qxf4 $18) (18... Rfe8 $14 19. Rf4 Qh5) 19. Rf4 $1 $16 Qh5 20. Ne4 {Inhibits Nf6.} f5 21. Ng3 Qg5 22. Rg1 Nf6 {[%cal Bg4f6,Bf6e4,Be4f2][%mdl 32]} 23. Rxf5 (23. Rf3 $5 {[%cal Rd2g5]} Qg6 24. Qd1 $14 (24. Rxf5 Ne4 $11)) 23... Qxd2+ 24. Kxd2 Ne4+ 25. Kc1 Nxf2 26. Rh5 {aiming for Nf5.} g6 27. Rh6 Re6 (27... Kg7 $11 28. Rh2 g5) 28. Nh5 $1 Ne4 29. Rhxg6+ Rxg6 30. Rxg6+ {[%mdl 4096] Endgame KRN-KRN} Kh7 {[%cal Rf8f1]} 31. Rg1 {Prevents Rf1+.} Rf5 {[#]} 32. Ng3 {[#]} (32. Re1 $1 $16 {[%cal Re1e4] is necessary to keep the advantage.}) 32... Ra5 $1 $17 {[%cal Ra5a1] Black is more active.} 33. c4 Ra1+ {[%mdl 64] Skewer} 34. Kc2 Rxg1 35. Nxe4 {KR-KN} Kg6 ({Black should try} 35... Rg6 $17 {With the idea ...Kg7.} 36. Kd3 Rh6) 36. Nd6 $1 $11 b5 37. d5 cxd5 38. c5 {Threatens to win with c6.} Rg2+ 39. Kd3 {c6 is the strong threat.} Rxb2 40. Kc3 Rb1 {[%cal Ob5b4] And now ...b4+! would win.} 41. Nxb5 {[%mdl 8192] [#]} (41. Kd2 $1 $11 {and White is okay.} Rb2+ 42. Kc3) 41... Kf6 $2 (41... Kf5 $1 $19 {Hoping for ...Ke5.} 42. Kc2 Ra1) 42. Nxa7 Ke5 43. Nc6+ Ke4 44. b4 $2 {[%mdl 8192] Now White is beyond hope.} (44. Na5 $15) 44... Rh1 {Black mates.} 45. Na5 d4+ 46. Kd2 Rh2+ 47. Kd1 Kd3 {[%cal Rh2h1]} 48. Ke1 Kc3 {Weighted Error Value: White=0.41/Black=0.30} 0-1

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.6"]
[White "Van Foreest, Lucas"]
[Black "Vogel, Roven"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2530"]
[BlackElo "2452"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,62,27,29,33,0,0,0,8,10,0,0,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 {Yermolinsky,Alex} d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. Rc1 Bf5 8. e3 e6 {8...e6 is better than 8...Rc8.} 9. Qb3 Nh5 {D13: Slav Defence: Exchange variation without ...Bf5.} 10. Be5 f6 {The position is equal.} 11. Bg3 Nxg3 12. hxg3 {[#]} g5 $146 {Prevents Nh4.} ({Don't do} 12... Bb4 13. Nh4 $16 (13. a3 Bxc3+ 14. Rxc3 O-O $14)) ({Predecessor:} 12... Bg6 13. Nh4 Bf7 14. Bd3 f5 15. g4 g6 16. gxf5 exf5 17. Nf3 Bd6 18. O-O O-O {1-0 (55) Xiong,J (2663)-Robson,R (2667) Saint Louis 2019 CBM 189 [Yermolinsky,Alex ]}) 13. a3 ({Not} 13. Qxb7 $2 Na5 14. Bb5+ axb5 15. Qxb5+ Qd7 16. Qxd7+ Kxd7 $19) 13... Bg6 14. Qd1 ({Wrong is} 14. Qxb7 $2 Na5 15. Bb5+ axb5 16. Qxb5+ Kf7 $19) 14... Kf7 15. Bd3 Kg7 16. Bxg6 hxg6 17. Rxh8 Kxh8 18. Na4 Rc8 19. Nc5 Bxc5 20. Rxc5 Kg7 21. Ke2 b6 22. Rc3 Na5 23. Qc2 Rxc3 24. Qxc3 Qd7 25. Nd2 Qc6 26. Qxc6 Nxc6 $11 {KN-KN} 27. Nb1 f5 28. Nc3 {Black must now prevent Na4.} Nb8 29. Na2 Nc6 30. Nc3 {Strongly threatening Na4.} Nb8 31. Na2 Nc6 {An interesting draw.  Weighted Error Value: White=0.03 (flawless) /Black=0.01 (flawless)} 1/2-1/2

[Event "84th Tata Steel Challengers 2022"]
[Site "Wijk aan Zee"]
[Date "2022.01.30"]
[Round "13.7"]
[White "Zhu, Jiner"]
[Black "Murzin, Volodar"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2478"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2022.01.15"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,118,17,4,39,32,37,29,37,7,12,-32,-25,-27,-32,-41,-43,-62,-43,-58,-36,-36,-22,-36,-36,-36,-36,-61,-29,-37,-36,-36,-36,-36,0,-36,-36,-36,-36,-47,-48,-61,-57,-79,-80,-75,-86,-130,-109,-164,-164,-156,-91,-145,-134,-140,-141,-160,-160,-142,-83,-84,-75,-69,-75,-175,-106,-216,-216,-356,-391,-418,-418,-418,-418,-396,-396,-346,-199,-908,-895,-877,-846,-696,-808,-614,-542,-1107,-1020,-3210,-2866,-2541,-2091,-2032,-1836,-1669,-1829,-1201,-811,-6079,-6679,-5814,-5518]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 O-O 9. O-O Nc6 {[%cal Bb8c6,Bc6a5,Ba5b3][%mdl 32]} 10. Qe2 h6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 11. Rfd1 Be6 12. Bb3 Qe8 {[#] White has an edge.} 13. h3 $146 ({Predecessor:} 13. Nh4 Kh7 14. Nf5 Nxe4 15. Nxg7 Kxg7 16. Nxe4 d5 17. Qh5 Rh8 18. Bxd5 {1-0 (18) Klein,F (2207)-Mull,T Maastricht 2007}) 13... Na5 14. Nd5 (14. Nh4 $11 {is more appropriate.}) 14... Nxb3 $15 15. Nxf6+ Bxf6 16. axb3 Qc6 17. Qd3 b5 18. Rac1 Rfd8 19. c4 {Prevents d5.} Qb7 20. Rc2 a5 21. Nd2 (21. cxb5 d5 22. exd5 Rxd5 $17) 21... a4 22. bxa4 bxa4 23. Ra1 Qc6 24. Ra3 Rdb8 {[%cal Bd8b8,Bb8b4,Bb4a4,Ba4a1][%mdl 32]} 25. b3 Rb4 26. bxa4 Raxa4 27. Rxa4 Rxa4 ({Much weaker is} 27... Qxa4 28. Qxd6 $1 Bxc4 29. Rxc4 (29. Nxc4 Rb1+ 30. Rc1 Rxc1+ 31. Bxc1 Qxc4 $11) 29... Rxc4 30. Nxc4 Qxc4 31. Qd7 $11) 28. Kh2 Bd8 29. f3 Bb6 30. Qb3 Bxe3 31. Qxe3 Ra1 (31... Bxc4 $2 32. Qc3 $18) 32. c5 ({White should play} 32. Qc3 Qa4 33. Rc1 Rxc1 34. Qxc1) 32... Qa4 $1 $17 33. Qc3 (33. Qd3 $17) 33... Ra3 $19 34. Qb2 Kh7 (34... Bb3 $2 35. c6 $1 {[%mdl 512]} Be6 36. c7 $18) (34... dxc5 $142 $1 35. Nc4 Rb3) 35. Rc1 ({Wrong is} 35. cxd6 $2 Ra2 36. Qxa2 Bxa2 $19) (35. Nc4 $142 Bxc4 36. Rxc4 Qxc4 37. Qxa3 Qxc5 38. Qb3) 35... Ra2 $17 36. Qc3 dxc5 {Hoping for ...Qd4.} 37. Nf1 c4 {Black is much more active.} 38. Qxe5 Qb3 {Inhibits Ne3.} ({Better is} 38... Qa7 {Strongly threatening ...Qf2.} 39. Ng3 Qf2) 39. Qc3 Re2 40. Ng3 Qb8 41. Rf1 (41. Ra1 $17 {might work better.}) 41... Qf4 $19 42. Qc1 (42. Rd1 $17) 42... Rd2 $40 {[%mdl 128] White is in trouble.} 43. Re1 {[#]} (43. e5 $142) 43... g5 $1 {[%cal Oe6h3]} 44. Kg1 {[#]} Bxh3 $1 {[%mdl 512]} 45. Re2 Rxe2 46. Nxe2 Qxc1+ 47. Nxc1 {[%mdl 4096] Endgame KB-KN} Be6 (47... Bd7 $142 {And now ...h5 would win.} 48. Ne2 Kg6) 48. Ne2 $2 (48. g4) 48... h5 {[%cal Bh6h5,Bh5h4][%mdl 32] Black is clearly winning.} 49. Kf2 Kg6 50. Ke3 h4 51. Kd4 g4 52. Ke3 gxf3 53. Kxf3 Kg5 {( -> ...Bg4+)} 54. Nc3 Bc8 {aiming for ...Bd7.} 55. Nb5 Bg4+ 56. Ke3 Bd7 57. Nc3 Kg4 {White must now prevent ...Kg3.} 58. Kf2 Bc6 59. Nd1 Kf4 {Weighted Error Value: White=0.51/Black=0.19 (very precise)} 0-1

