[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.1"]
[White "Saduakassova, Dinara"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2519"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,21,27,27,27,25,31,34,27,30,37,32,39,26,41,29,35,0,9,8,7,-14,-6,-9,-9,-28,-28,-53,-53,-53,-53,-66,-66,-67,0,0,0,0,0,0,0,0,13,0,0,0,18,0]} 1. d4 d5 2. c4 e6 3. Nf3 a6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 {D37: Queen's Gambit Declined: 5 Bf4.} Be6 7. e3 Nbd7 8. Bd3 {White is slightly better.} h6 9. Bf4 g5 10. Bg3 Nh5 11. Qc2 Nxg3 12. hxg3 Bg7 13. Bf5 Qf6 $36 {[%mdl 2048] Black fights for an advantage.} 14. g4 O-O-O 15. O-O-O Kb8 16. Kb1 c6 17. Ne2 {[#]} (17. Rh5 {is interesting.} Rc8 18. a3 Rce8 19. Rdh1 Qe7 20. R5h3) 17... Bxf5 $146 ({Predecessor:} 17... Bf8 18. Ng3 Bd6 19. Nh5 Qe7 20. e4 Bxf5 21. exf5 Rde8 22. Rde1 Qd8 23. Qc3 Qc7 {1-0 (90) Grela,K (2294)-Baum,J (2064) Marianske Lazne 2018}) 18. Qxf5 Qxf5+ 19. gxf5 g4 $1 {[%cal Rg4f3]} 20. Ne1 h5 21. g3 Bf6 (21... Nf6 $15) 22. Nf4 $11 {The position is equal.} h4 23. gxh4 Bxh4 24. Ned3 Bg5 25. Ne2 Bh4 26. Nef4 Bg5 27. Ne2 Bh4 28. Nef4 {Accuracy: White = 90%, Black = 95%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.2"]
[White "Anton Guijarro, David"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2694"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,148,13,22,3,31,25,30,-19,58,47,56,17,18,17,13,0,0,-14,0,-18,-13,-30,-31,-27,-27,-21,-39,-53,-54,-71,-67,-54,-60,-59,-58,-59,-56,-83,-85,-106,-95,-97,-79,-110,-110,-113,-109,-104,-101,-146,-137,-126,-145,-140,-141,-146,-76,-91,-84,-76,-72,-147,-153,-145,-29,-17,-40,-60,-62,-51,66,0,0,0,0,0,0,0,152,-17,-10,-18,0,-8,0,-13,17,0,79,87,91,83,67,0,0,-23,-14,-14,-12,-9,-14,-45,-45,-45,-45,-45,-45,-52,-45,-44,-42,-42,-42,-54,-36,-36,-36,-36,-36,-36,-36,-36,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,-35,0,-35,0,-35,0]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 a6 5. b3 c5 6. Bb2 {A17: English Opening: 1...Nf6 with ...Bb4} Nc6 7. cxd5 exd5 8. Rc1 {White has an edge.} Bg4 ({Black should play} 8... b5 $1 $11) 9. Na4 $146 ({Predecessor:} 9. h3 Bh5 10. Na4 Nd7 11. Be2 b5 12. Nc3 {1-0 (28) Mamedyarov,S (2801)-Georgiadis,N (2526) Biel 2018}) 9... Nd7 10. Be2 (10. h3 $5 {[%cal Rh3g4]} Be6 11. d4 $14) 10... b5 11. Nc3 $1 {[%cal Rc3d5]} Nb6 12. a4 b4 13. Nb1 Be6 14. O-O Na5 $1 15. d3 f6 16. Nbd2 Be7 $1 17. Qc2 O-O 18. Qb1 Rc8 19. Bd1 Kh8 20. Bc2 Bg8 21. Rfe1 $1 Bd6 22. Ba1 Re8 23. h4 h6 24. Nf1 Bf7 25. N1d2 Bh5 26. Bd1 Bg6 27. Bc2 Qd7 28. Nf1 Nc6 29. Bb2 d4 30. exd4 cxd4 31. Rxe8+ Rxe8 32. Re1 Rc8 (32... Nd5 $142 $1 33. Rxe8+ Qxe8 34. Nxd4 Nxd4 35. Bxd4 Nf4) 33. Nxd4 Nxd4 34. Bxd4 Nd5 35. Qd1 (35. Qb2 $142) 35... Nf4 $1 $17 {[%mdl 1024] Black has strong compensation.} 36. Bb1 Bb8 (36... Bh5 $17 37. f3 Nh3+ $1 {[%mdl 512]} 38. Kh1 (38. gxh3 Qxh3 39. Re3 Qxh4 $19) 38... Bf4) 37. Be3 $11 Bh5 38. f3 Bf7 39. d4 Qd6 ({Black should try} 39... Rc3 $15) 40. Bxf4 ({Better is} 40. g3 $14 Nh5 41. f4) 40... Qxf4 41. Qd3 {[%csl Gb1][%cal Rd3h7]} Bg8 42. g3 $40 {[%mdl 128] Black needs to defend precisely.} Qd6 43. Kg2 a5 $2 {[#]} ({Much worse is} 43... Rc3 $6 44. Qg6 $16) (43... Rd8 $11) 44. Qe4 $2 (44. Qg6 $1 $16) 44... Rd8 45. Rd1 Qc7 46. Bc2 Qc8 47. Rd2 Re8 48. Qd3 Rd8 {[#]} (48... Re1 $11) 49. Ne3 $1 $16 Qc7 50. Qg6 Ba7 51. Ng4 (51. Nf5 $14 Bh7 52. Qg4) 51... Qf7 $11 {aiming for ...Qxg6.} 52. Qxf7 (52. Qe4 {looks sharper.} Qe6 53. Qxe6 Bxe6 54. Ne3 Bxd4 55. f4) 52... Bxf7 53. Ne3 Rxd4 54. Rxd4 Bxd4 55. Nc4 Bxc4 $1 56. bxc4 $15 {[%mdl 4096] Endgame KB-KB} Kg8 57. Kf1 Kf7 58. Ke2 Ke6 59. g4 {[#]} h5 $1 {[%mdl 512]} 60. gxh5 Ke5 61. Be4 Kf4 62. Kd3 Bc5 63. Bc6 Bf2 64. Bd5 Ke5 65. Be4 f5 66. Bb7 f4 67. Bc8 Bxh4 68. Kc2 Kd4 69. Kb3 Be7 70. Bd7 Ke3 71. Bc6 Bd6 72. Bd5 Be7 73. Bc6 Bd6 74. Bd5 Be7 {Accuracy: White = 46%, Black = 59%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.3"]
[White "Smeets, Jan"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2585"]
[BlackElo "2523"]
[Annotator "ChessBase"]
[PlyCount "103"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} exd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:03]} 5. Nxc6 {[%emt 0:00:50]} bxc6 {[%emt 0:00:06]} 6. Bd3 {[%emt 0:00:06]} d5 {[%emt 0:00:38]} 7. exd5 {[%emt 0:00:30]} cxd5 {[%emt 0:00:06]} 8. O-O {[%emt 0:00:24]} Be7 {[%emt 0:00:17]} 9. c4 {[%emt 0:01:05]} d4 {[%emt 0:00:18]} 10. Bg5 {[%emt 0:00:55]} O-O {[%emt 0:00:19]} 11. Qc2 {[%emt 0:01:41]} h6 {[%emt 0:03:12]} 12. Bxf6 {[%emt 0:01:11]} Bxf6 {[%emt 0:00:37]} 13. b4 {[%emt 0:00:32]} Be7 {[%emt 0:25:53]} 14. a3 {[%emt 0:20:52]} c5 {[%emt 0:16:44]} 15. b5 {[%emt 0:02:08]} Bb7 {[%emt 0:08:55]} 16. Nd2 {[%emt 0:05:21]} Bd6 {[%emt 0:00:06]} 17. Rfe1 {[%emt 0:31:42]} f5 {[%emt 0:01:23]} 18. Re6 {[%emt 0:18:21]} Bc8 {[%emt 0:12:40]} 19. Re2 {[%emt 0:06:18]} Bb7 {[%emt 0:10:27]} 20. Bxf5 {[%emt 0:03:56]} Qf6 {[%emt 0:15:52]} 21. Bh7+ {[%emt 0:11:18]} Kh8 {[%emt 0:00:06]} 22. Qd3 {[%emt 0:00:06]} g6 {[%emt 0:06:08]} 23. Qxg6 {[%emt 0:01:59]} Bxg2 {[%emt 0:01:18]} 24. Qxf6+ {[%emt 0:01:54]} Rxf6 {[%emt 0:00:02]} 25. Kxg2 {[%emt 0:00:37]} Kxh7 {[%emt 0:00:02]} 26. Ne4 {[%emt 0:00:11]} Rg6+ {[%emt 0:00:12]} 27. Ng3 {[%emt 0:00:26]} a6 {[%emt 0:00:03]} 28. Rb1 {[%emt 0:01:04]} axb5 {[%emt 0:00:16]} 29. Rxb5 {[%emt 0:00:02]} d3 {[%emt 0:02:57]} 30. Rd2 {[%emt 0:00:37]} Rxa3 {[%emt 0:00:02]} 31. Kf3 {[%emt 0:00:38]} Rf6+ {[%emt 0:00:26]} 32. Kg2 {[%emt 0:00:40]} Re6 {[%emt 0:02:26]} 33. Kf3 {[%emt 0:00:29]} Rf6+ {[%emt 0:00:01]} 34. Kg2 {[%emt 0:00:01]} Bf4 {[%emt 0:03:52]} 35. Rd1 {[%emt 0:00:01]} d2 {[%emt 0:00:19]} 36. Ne2 {[%emt 0:00:21]} Bg5 {[%emt 0:00:02]} 37. f4 {[%emt 0:01:29]} Bxf4 {[%emt 0:00:03]} 38. Nxf4 {[%emt 0:00:04]} Rxf4 {[%emt 0:00:02]} 39. Rxd2 {[%emt 0:01:04]} Rxc4 {[%emt 0:00:51]} 40. Rb6 {[%emt 0:00:00]} Rg4+ {[%emt 0:00:00]} 41. Kf2 {[%emt 0:08:51]} Ra7 {[%emt 0:04:09]} 42. Rc6 {[%emt 0:01:29]} Rf7+ {[%emt 0:02:06]} 43. Ke3 {[%emt 0:01:59]} Rg5 {[%emt 0:00:20]} 44. Ra2 {[%emt 0:08:14]} Re5+ {[%emt 0:00:57]} 45. Kd3 {[%emt 0:00:28]} Rf3+ {[%emt 0:00:14]} 46. Kc4 {[%emt 0:00:17]} Rf4+ {[%emt 0:00:08]} 47. Kc3 {[%emt 0:02:54]} Re3+ {[%emt 0:01:34]} 48. Kd2 {[%emt 0:00:10]} Re7 {[%emt 0:00:21]} 49. Kc3 {[%emt 0:11:56]} Rf5 {[%emt 0:00:04]} 50. Ra5 {[%emt 0:01:07]} Rh5 {[%emt 0:00:19]} 51. Raxc5 {[%emt 0:02:24]} Rxh2 {[%emt 0:00:17]} 52. Rc7 {[%emt 0:00:23]} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.4"]
[White "Ganguly, Surya Shekhar"]
[Black "Warmerdam, Max"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2636"]
[BlackElo "2498"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,81,7,4,-20,14,31,12,14,23,8,8,8,9,14,0,0,0,0,0,0,12,0,48,50,88,32,46,0,0,0,0,0,0,-34,0,36,143,143,139,139,138,22,139,141,138,145,152,132,160,172,168,164,239,230,221,218,238,226,399,400,367,363,397,396,376,152,159,0,358,360]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. h3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} O-O 9. g4 Be6 10. g5 {[#] The position is equal.} Nh5 $146 ({Predecessor:} 10... Nfd7 11. Qd2 Kh8 12. O-O-O Nb6 13. Nh4 g6 14. Ng2 N8d7 15. f4 Rc8 16. h4 Nc4 17. Bxc4 Rxc4 18. h5 b5 19. hxg6 fxg6 20. Nh4 Bf7 21. f5 b4 22. Nxg6+ {1-0 (22) Nenezic,D (2138)-Jovancevic,J (2039) Niksic 2018}) 11. Qd2 Nd7 {[%cal Bb8d7,Bd7b6,Bb6c4][%mdl 32]} 12. O-O-O Rc8 13. Kb1 Nb6 14. h4 Qc7 15. Bh3 Nc4 16. Qd3 Qd7 17. Ng1 Bd8 18. Bc1 Ba5 {Hoping for ...Nf4.} 19. Nd5 (19. Nge2 $16) 19... Nb6 $14 20. Qe2 g6 21. Nf6+ Nxf6 22. gxf6 Na4 23. Rd3 Bd8 ({Black should try} 23... Nc5 $15 24. Bxe6 Qxe6) 24. Rf3 Qb5 (24... h5 $14) 25. Qxb5 $16 axb5 26. Bh6 $1 $36 {[%mdl 2048] White is in control.} Nc5 27. h5 ({Better is} 27. Bxf8 $16 Kxf8 28. Bxe6 fxe6 29. Re3) 27... g5 (27... Bxh3 $1 $11 {keeps the balance.} 28. hxg6 (28. Rfxh3 Re8 $11) (28. Nxh3 Nxe4 29. Re3 Nxf6 $11) 28... fxg6 29. Bxf8 Bg2 30. Bxd6 Bxf6 31. Rxf6 Nxe4 32. Rxg6+ (32. Rh2 Nxf6 33. Bxe5 Be4 $15) 32... hxg6) 28. Bxe6 fxe6 29. Bxf8 Kxf8 30. Rc3 {Strongly threatening b4.} b4 31. Rc4 Ba5 32. Nf3 h6 (32... b5 $142 33. Rxc5 dxc5) 33. Rd1 $18 b5 34. Rxc5 $1 Rxc5 35. Rxd6 {[%mdl 4096] Endgame KRB-KRN} Kf7 $2 (35... g4) 36. Rd7+ Kxf6 37. Rh7 g4 38. Rxh6+ Ke7 39. Rh7+ (39. Ng5 $1 $18 {is the precise move to win.}) 39... Kf6 $16 {[#]} 40. Rh6+ $2 (40. Nh2 $1 $16 {[%cal Rh2g4]} Kg5 41. Rh8) 40... Ke7 $18 {[#]} 41. Ng5 $1 {Accuracy: White = 78%, Black = 54%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.5"]
[White "L'Ami, Erwin"]
[Black "Smirnov, Anton"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2606"]
[BlackElo "2604"]
[Annotator "ChessBase"]
[PlyCount "93"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c6 {[%emt 0:00:06]} 3. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:05]} 4. e3 {[%emt 0:00:50]} Bg4 {[%emt 0:00:14]} 5. Qb3 {[%emt 0:01:11]} Qb6 {[%emt 0:03:01]} 6. Ne5 {[%emt 0:00:52]} Bf5 {[%emt 0:01:35]} 7. cxd5 {[%emt 0:00:18]} Qxb3 {[%emt 0:03:54]} 8. axb3 {[%emt 0:00:39]} Nxd5 {[%emt 0:00:08]} 9. Bd3 {[%emt 0:00:22]} Bxd3 {[%emt 0:01:58]} 10. Nxd3 {[%emt 0:00:21]} Na6 {[%emt 0:06:51]} 11. Bd2 {[%emt 0:01:26]} e6 {[%emt 0:00:36]} 12. Ke2 {[%emt 0:00:17]} Be7 {[%emt 0:06:51]} 13. Na3 {[%emt 0:06:40]} O-O {[%emt 0:09:52]} 14. Nc4 {[%emt 0:03:23]} c5 {[%emt 0:11:22]} 15. Rxa6 {[%emt 0:01:45]} bxa6 {[%emt 0:00:09]} 16. dxc5 {[%emt 0:00:12]} Rfc8 {[%emt 0:05:06]} 17. b4 {[%emt 0:01:59]} f6 {[%emt 0:02:19]} 18. e4 {[%emt 0:13:00]} Nc7 {[%emt 0:00:13]} 19. Bc3 {[%emt 0:05:27]} Nb5 {[%emt 0:03:44]} 20. Ra1 {[%emt 0:04:17]} Rc6 {[%emt 0:01:32]} 21. e5 {[%emt 0:03:11]} Bd8 {[%emt 0:06:24]} 22. Nd6 {[%emt 0:06:54]} Rb8 {[%emt 0:02:13]} 23. f4 {[%emt 0:03:13]} h5 {[%emt 0:07:37]} 24. g3 {[%emt 0:03:31]} Nc7 {[%emt 0:09:22]} 25. Ke3 {[%emt 0:08:40]} f5 {[%emt 0:02:52]} 26. Bd2 {[%emt 0:08:11]} Kf8 {[%emt 0:04:07]} 27. Kd4 {[%emt 0:12:59]} g6 {[%emt 0:02:21]} 28. Ne1 {[%emt 0:05:30]} Nb5+ {[%emt 0:05:13]} 29. Nxb5 {[%emt 0:03:03]} axb5 {[%emt 0:02:23]} 30. Rxa7 {[%emt 0:01:09]} Rcc8 {[%emt 0:01:04]} 31. Nc2 {[%emt 0:07:53]} Ra8 {[%emt 0:01:12]} 32. Rd7 {[%emt 0:00:24]} Be7 {[%emt 0:06:43]} 33. Ke3 {[%emt 0:02:21]} Ke8 {[%emt 0:00:02]} 34. Rd6 {[%emt 0:01:08]} Bxd6 {[%emt 0:00:12]} 35. exd6 {[%emt 0:00:08]} Kd7 {[%emt 0:00:42]} 36. Nd4 {[%emt 0:02:24]} Ra2 {[%emt 0:02:51]} 37. Bc3 {[%emt 0:00:36]} Ra1 {[%emt 0:00:05]} 38. Nxb5 {[%emt 0:02:57]} Rh1 {[%emt 0:02:05]} 39. h4 {[%emt 0:00:39]} Rg1 {[%emt 0:00:34]} 40. Kf2 {[%emt 0:00:00]} Rd1 {[%emt 0:00:00]} 41. Nd4 {[%emt 0:07:29]} Ra8 {[%emt 0:22:39]} 42. Ke2 {[%emt 0:17:28]} Rg1 {[%emt 0:01:41]} 43. b5 {[%emt 0:04:03]} Rxg3 {[%emt 0:05:33]} 44. Bb4 {[%emt 0:01:31]} Rg2+ {[%emt 0:00:41]} 45. Kd3 {[%emt 0:00:49]} Rxb2 {[%emt 0:00:10]} 46. c6+ {[%emt 0:00:06]} Kc8 {[%emt 0:00:13]} 47. Nxe6 {[%emt 0:03:42]} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.6"]
[White "Keymer, Vincent"]
[Black "Eljanov, Pavel"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2527"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,138,31,0,0,0,0,15,9,12,3,12,2,4,4,10,6,11,17,21,32,-13,-11,-59,-49,-118,-75,-82,-83,-93,-84,-90,-85,-90,-97,-91,-92,-91,-100,-98,-43,-53,-8,-8,-6,-25,-21,-18,-18,-43,-37,-94,-101,-110,-119,-131,-74,-77,-58,-58,-58,-58,-58,-58,-58,-66,-58,-58,-58,-66,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-29,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-606,-608,-606,-598,-598,-598,-598,-598,-564,-565,-499,-8,-8,-8,-4630,-4622,-29962,-29962,-12834,-5604,-5081,-4706]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O dxc4 9. Bxc4 e5 10. h3 Qe7 11. Bb3 a5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (11... Bc7 12. Bd2 h6 13. Nh4 Rd8 14. Nf5 Qf8 15. Rad1 exd4 16. exd4 Nb6 17. Rfe1 Bxf5 18. Qxf5 Qd6 19. g3 Qd7 {½-½ (33) Mareco,S (2651)-Henriquez Villagra,C (2543) Montevideo 2019}) 12. a3 Bc7 13. Bd2 h6 {The position is equal.} 14. Rad1 Re8 15. dxe5 Nxe5 16. Nd4 c5 17. Nf5 Bxf5 $1 18. Qxf5 c4 19. Ba2 $146 ({Predecessor:} 19. Ba4) 19... Rad8 20. Bc1 Bb8 $40 {[%mdl 128] Black has some attack.} 21. Nb5 Rc8 $1 {[%cal Bd8c8,Bc8c5,Bc5e5][%mdl 32]} 22. f4 (22. Nc3 $15) 22... Rc5 23. fxe5 Rxe5 24. Qc2 Rxb5 25. Bxc4 Rg5 26. e4 {[#]} Qc7 $1 {[%mdl 512] ( -> ...Qh2+)} 27. Bf4 Qc5+ 28. Kh1 Bxf4 29. Rxf4 b5 (29... Qc7 $1 $17 {[%cal Rc7f4]} 30. Rdf1 b5) 30. Bb3 Qxc2 (30... a4 {looks sharper.} 31. Qxc5 Rxc5 32. Bd5 Rc2 33. b4 Rc3) 31. Bxc2 Kf8 32. Rd2 Nh5 33. Rf3 Ng3+ 34. Kh2 Nxe4 35. Bxe4 (35. Rd4 $15 Nf6 36. Bd3) 35... Rxe4 $15 {[%mdl 4096] Endgame KRR-KRR} 36. Rd7 f6 37. Rc3 Re7 (37... Kg8 $142 {aiming for ...Re2!} 38. Rc2 b4) 38. Rc8+ $17 Kf7 39. Rxe7+ $1 Kxe7 $15 {KR-KR} 40. b3 $1 Rd5 41. Rc7+ Kf8 42. Rb7 Kg8 43. Kg1 Kh7 44. Ra7 b4 ({Black should play} 44... Rd3 $15) 45. axb4 $11 axb4 46. Rb7 Rd4 47. Kf2 f5 48. Ke3 Re4+ 49. Kf3 h5 50. Rb6 h4 51. Rb7 Kh6 52. Rb5 Kg5 53. Rb7 g6 54. Rb8 Kf6 55. Rb6+ Ke5 56. Rb5+ Kd6 57. Rb6+ Kc5 58. Rxg6 Kd4 {White must now prevent ...Re3+.} 59. Rc6 $2 {[%mdl 8192]} (59. Rf6 $11) 59... Re3+ $19 {[%mdl 64] Double Attack} 60. Kf4 Rxb3 61. Rh6 Re3 62. Kxf5 {[#]} Re5+ $1 63. Kg4 {[#]} Re4+ $1 64. Kf5 b3 $2 ({Black should try} 64... Kd3 $19 {Hoping for ...Rd4.} 65. Rg6 Rc4) 65. Rb6 $1 $11 {[%cal Rb6b4] Strongly threatening Rb4+.} Re3 66. Kg4 $2 {[%mdl 8192]} (66. Kg5 $11) 66... Kc5 $19 67. Rf6 Re4+ 68. Kg5 b2 69. Rf1 Kb4 {Accuracy: White = 52%, Black = 70%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.11"]
[Round "1.7"]
[White "Nihal Sarin"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2618"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "206"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,206,4,11,0,15,8,11,-4,0,-6,-18,-14,0,-15,-11,-36,-13,-7,-7,-18,-16,-35,0,-7,0,0,0,-12,-6,-8,49,47,56,54,47,16,41,0,14,16,49,43,67,73,69,74,68,67,67,68,68,68,68,68,66,65,67,71,72,75,78,60,68,67,68,68,68,68,72,66,83,83,84,84,92,92,92,92,92,92,92,92,103,92,92,92,92,83,92,83,87,87,92,92,92,91,91,83,91,0,92,87,92,92,92,87,87,87,92,92,92,93,94,91,92,91,95,89,89,89,95,89,93,93,95,75,75,75,93,66,66,66,66,66,66,22,22,22,67,67,67,67,67,67,67,67,67,67,68,68,75,75,75,68,68,68,75,75,75,75,75,75,75,75,75,75,75,75,75,75,75,68,68,67,67,67,67,67,67,67,67,67,67,67,68,67,75,75,75,75,75,75,75,75,75,75,75,8,8]} 1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Qxd4 Nf6 5. Be2 g6 6. O-O {B53: Sicilian: 2...d6: Lines with Qxd4} (6. h3 Bg7 7. O-O O-O 8. c4 Be6 9. Qe3 Qc8 10. Bd2 Nbd7 11. Nd4 Qc5 12. Nxe6 fxe6 {0-1 (58) Anand,V (2757)-Nepomniachtchi,I (2773) Kolkata 2019}) 6... Bg7 7. Qe3 O-O 8. h3 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5e4][%mdl 32]} 9. c4 b6 10. Nc3 Bb7 11. Rd1 $146 ({Predecessor:} 11. Rb1 Nc5 12. Nd2 e6 {0-1 (39) Mazi,L (2336)-Shevchenko,K (2537) Trieste 2017}) 11... Nc5 {[%cal Rf6e4]} 12. e5 Nfe4 13. Nxe4 Nxe4 14. Qa3 Qc8 15. Be3 {[%cal Re5d6]} Rd8 16. Rac1 Qe6 17. exd6 Rxd6 18. Re1 Qf6 19. b4 {[%cal Bb2b4,Bb4c5][%mdl 32]} h6 (19... Nc3 $11 20. Bf1 (20. Bg5 Nxe2+ 21. Rxe2 Qf5 $17) 20... Bxf3 21. gxf3 Rd7) 20. c5 bxc5 21. bxc5 Rdd8 22. Nh2 h5 23. Bf3 Bc6 24. Nf1 {With the idea Rc4.} Rdc8 25. Rc4 Nc3 26. Rf4 $36 {[%mdl 2048] White is really pushing.} Qe6 27. Bd2 $1 {[%csl LRc3,LRe6][%mdl 64] [#] Discovered Attack} Qxa2 28. Qxa2 Nxa2 29. Rxe7 a5 30. Rfxf7 Bf8 31. Bxc6 Rxc6 32. Ra7 Rxa7 33. Rxa7 Rxc5 34. Bxa5 Nc3 35. Ne3 Ne2+ 36. Kf1 Nf4 {next ...Rc1+ is good for Black.} 37. Bd2 Rb5 {[#] Threatens to win with ...Rb1+.} 38. Ra1 Bg7 39. Rd1 Rb2 40. Nc4 Rc2 41. Nd6 Nd3 {Threatening ...Nb2.} 42. Ne4 Nc5 43. Ng5 {aiming for Be3.} Bf6 44. Be3 {Strongly threatening Rd6.} Bxg5 45. Bxg5 $16 {[%mdl 4096] Endgame KRB-KRN} Ne6 46. Be3 Rc7 47. Ke2 Kf7 48. Kf3 Rb7 49. Ra1 Kf6 50. Ra6 Rb4 51. g3 Rc4 52. Rb6 Kf7 53. Rd6 Ke7 54. Ra6 (54. Rd5 {seems wilder.} Rb4 55. h4 Ra4 56. Bd2 Nd4+ 57. Ke3) 54... Kf6 $1 55. Ke2 Kf7 56. Kd3 Rc7 57. Rb6 Ra7 58. Rb4 Re7 59. Rb5 Rd7+ 60. Ke4 Re7 61. Kf3 Rc7 62. Rb4 Re7 63. g4 hxg4+ 64. hxg4 Re8 65. Kg3 Re7 66. Ra4 Rc7 67. f4 Rc3 68. Kf3 Rc7 69. Ra2 Rc4 70. Rd2 Ke7 71. Rd1 Ra4 72. f5 gxf5 73. gxf5 Kf6 74. fxe6 Kxe6 $14 {KRB-KR} 75. Bf4 Ra3+ 76. Kg4 Ra6 77. Rd4 Rc6 78. Kf3 Ra6 79. Ke4 Ra1 80. Rd6+ Ke7 81. Rb6 Kd7 82. Be5 Re1+ 83. Kd5 Rd1+ 84. Bd4 Rd2 85. Rb7+ Kd8 86. Rh7 Rd1 87. Ke5 Kc8 88. Bc5 Rd7 89. Rh1 Rd2 90. Bd6 Kd7 91. Rh7+ Kc6 92. Rc7+ Kb5 93. Rc5+ Ka4 94. Rc1 Kb5 95. Bc5 Rh2 96. Bd4 Rh5+ 97. Kd6 Rh6+ 98. Kd5 Rh5+ 99. Be5 Rg5 100. Rb1+ Ka5 101. Rb3 Rh5 102. Rb7 Rg5 103. Rg7 ({White should try} 103. Rb8 $16) 103... Rxg7 {Accuracy: White = 63%, Black = 68%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.1"]
[White "Warmerdam, Max"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2498"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,131,14,16,19,25,25,16,20,15,16,12,28,23,29,0,16,13,35,37,36,28,27,32,31,19,22,22,18,23,19,19,18,13,19,0,0,0,0,0,0,-49,-50,-56,-42,-50,-41,-52,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 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 Bb7 9. d3 d6 10. Nc3 b4 11. Nd5 Nxd5 12. Bxd5 Rb8 {C88: Closed Ruy Lopez: Anti-Marshall Systems} 13. b3 (13. Bd2 Bf6 14. a5 Nd4 15. Bc4 c5 16. Nxd4 exd4 17. Qh5 Bc8 18. f4 Be6 19. Bxa6 Ra8 20. Bb7 Rxa5 {1-0 (30) Bosiocic,M (2613)-Saraci,N (2397) Prishtina 2019}) 13... Bf6 14. Bb2 Re8 15. Qd2 Qc8 $146 ({Predecessor:} 15... Qd7 16. Rad1 h6 17. h3 Bc8 18. d4 Na5 19. dxe5 dxe5 20. Qe3 {½-½ (45) Bezdan,T (2270)-Mathe,G (2400) Hungary 1994}) 16. Rad1 Ne7 {[%cal Bc6e7,Be7g6,Bg6f4][%mdl 32]} 17. Bxb7 Qxb7 18. d4 Ng6 19. dxe5 Bxe5 20. Nxe5 dxe5 21. Qd5 Qxd5 22. Rxd5 f6 23. Rc5 Nf4 24. Rc6 ({Much worse is} 24. Rxc7 Rec8 $15) 24... a5 25. Bc1 ({Reject} 25. Rxc7 Rec8 $17) 25... Ne6 26. Be3 Rbd8 27. Kf1 Kf7 28. c3 bxc3 29. Rc1 {[#]} Rd4 $1 {[%mdl 512]} 30. f3 (30. Bxd4 exd4) 30... Rb8 31. R6xc3 Rdb4 32. Bd2 {White wants to play Rxc7+.} Rxb3 33. Rxb3 Rxb3 34. Bxa5 $15 {[%mdl 4096] Endgame KRB-KRN} Ra3 (34... c5 $15) 35. Bxc7 $11 {The position is equal.} Rxa4 36. Bb6 Ra3 37. Rc2 g5 38. Kf2 h5 39. h3 g4 40. hxg4 hxg4 41. Bc5 Rb3 42. fxg4 Ng5 43. Rc4 Rb2+ 44. Kf1 Rb1+ 45. Kf2 Rb2+ 46. Kf1 Kg6 47. Be3 Ra2 48. Rb4 Rc2 49. Ra4 Nf7 50. g5 Nxg5 51. Bxg5 Kxg5 {KR-KR} 52. Ra3 Rc6 53. Rf3 Rc1+ 54. Kf2 Rc2+ 55. Kf1 Ra2 56. Rf5+ Kg6 {White must now prevent ...Ra4.} 57. g4 Ra4 {[#]} 58. g5 $1 {[%mdl 512]} Rxe4 (58... fxg5 59. Rxe5) 59. Rxf6+ Kxg5 60. Rf8 (60. Rf3 {with more complications.}) 60... Rf4+ 61. Rxf4 Kxf4 {KP-K} 62. Kf2 e4 (62... Ke4 $5 63. Ke2 $8 Kf5 $11) 63. Ke2 e3 64. Ke1 Kf3 (64... Ke4 $5) 65. Kf1 e2+ 66. Ke1 Ke3 {Accuracy: White = 86%, Black = 95%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.2"]
[White "Smirnov, Anton"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2604"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "76"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:01]} a6 {[%emt 0:00:00]} 6. Be3 {[%emt 0:00:07]} e5 {[%emt 0:00:00]} 7. Nf3 {[%emt 0:00:04]} Be7 {[%emt 0:00:20]} 8. Nd2 {[%emt 0:00:07]} b5 {[%emt 0:01:52]} 9. a4 {[%emt 0:00:07]} b4 {[%emt 0:00:03]} 10. Nd5 {[%emt 0:00:05]} Nxd5 {[%emt 0:00:05]} 11. exd5 {[%emt 0:00:06]} O-O {[%emt 0:05:26]} 12. Nc4 {[%emt 0:00:21]} Nd7 {[%emt 0:00:05]} 13. a5 {[%emt 0:00:05]} f5 {[%emt 0:00:05]} 14. f3 {[%emt 0:01:09]} Nf6 {[%emt 0:33:36]} 15. Be2 {[%emt 0:24:12]} Qe8 {[%emt 0:15:56]} 16. f4 {[%emt 0:06:36]} Bb7 {[%emt 0:16:46]} 17. Nb6 {[%emt 0:00:48]} Rd8 {[%emt 0:17:45]} 18. O-O {[%emt 0:03:05]} Ne4 {[%emt 0:00:54]} 19. Ra4 {[%emt 0:16:35]} exf4 {[%emt 0:03:29]} 20. Bxf4 {[%emt 0:00:37]} b3 {[%emt 0:01:59]} 21. cxb3 {[%emt 0:10:46]} Bf6 {[%emt 0:00:23]} 22. Bf3 {[%emt 0:05:38]} Nc5 {[%emt 0:01:55]} 23. Rc4 {[%emt 0:00:31]} Rf7 {[%emt 0:05:33]} 24. b4 {[%emt 0:03:29]} Nd7 {[%emt 0:00:04]} 25. Nxd7 {[%emt 0:03:41]} Rdxd7 {[%emt 0:00:55]} 26. Rc6 {[%emt 0:07:18]} g5 {[%emt 0:01:46]} 27. Bg3 {[%emt 0:03:59]} g4 {[%emt 0:00:55]} 28. Be2 {[%emt 0:00:02]} Be5 {[%emt 0:00:21]} 29. Bxe5 {[%emt 0:03:51]} Qxe5 {[%emt 0:01:27]} 30. Bxa6 {[%emt 0:00:52]} Bxa6 {[%emt 0:02:04]} 31. Rxa6 {[%emt 0:00:06]} Qxb2 {[%emt 0:00:36]} 32. Rxf5 {[%emt 0:08:17]} Rxf5 {[%emt 0:00:31]} 33. Qxg4+ {[%emt 0:00:02]} Rg7 {[%emt 0:00:07]} 34. Ra8+ {[%emt 0:00:53]} Rf8 {[%emt 0:00:04]} 35. Qe6+ {[%emt 0:03:07]} Rgf7 {[%emt 0:01:00]} 36. Rxf8+ {[%emt 0:00:07]} Kxf8 {[%emt 0:00:03]} 37. Qc8+ {[%emt 0:00:07]} Kg7 {[%emt 0:00:05]} 38. Qg4+ {[%emt 0:00:04]} Kf8 {[%emt 0:01:22]} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.3"]
[White "Saduakassova, Dinara"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "2519"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,55,36,25,31,41,27,56,57,63,55,58,58,61,50,75,70,63,18,21,20,36,19,27,31,29,0,21,10,46,15,24,0,10,0,0,0,11,0,23,0,12,0,7,0]} 1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Qc2 Bb4 5. e3 b6 6. Bd3 Bb7 7. f3 O-O 8. Nge2 {A85: Dutch Defence: 2 c4 Nf6 3 Nc3} Bd6 (8... Qe7 9. O-O Bxc3 10. Nxc3 d6 11. b3 c5 12. d5 exd5 13. cxd5 Na6 14. Qd2 Nd7 15. Bb2 Nc7 {1-0 (53) Illescas Cordoba,M (2609)-Neiksans,A (2502) Porto Carras 2011}) 9. Bd2 Na6 10. a3 {White is slightly better.} c5 11. O-O-O cxd4 $146 ({Predecessor:} 11... Qe7 12. Be1 Rac8 {0-1 (34) Bohnsack,R (2260)-Hochgraefe,M (2290) Germany 1998}) 12. exd4 Rc8 13. Kb1 Nc7 14. Rhe1 Kh8 15. Bf4 Bxf4 16. Nxf4 b5 17. cxb5 Ncd5 18. Nfxd5 Nxd5 19. Qb3 Qh4 20. Na4 Qxd4 21. Bxf5 (21. b6 $5 {[%cal Rd3a6]} Bc6 22. b7 Bxb7 23. Ba6 Qxd1+ 24. Rxd1 Bxa6 25. Rc1 $14) 21... Qf2 22. Be4 Qxg2 23. Ka1 Qf2 24. Rf1 Qe2 (24... Qxh2 $6 25. Rh1 $16) 25. Rfe1 Qf2 $1 ({Much worse is} 25... Qxh2 $6 26. Rh1 $16) 26. Rf1 Qe2 ({Reject} 26... Qxh2 $6 27. Rh1 $16) 27. Rfe1 Qf2 $1 ({Don't play} 27... Qxh2 $6 28. Rh1 $16) 28. Rf1 {Accuracy: White = 52%, Black = 66%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.4"]
[White "Abdusattorov, Nodirbek"]
[Black "Smeets, Jan"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2635"]
[BlackElo "2585"]
[Annotator "ChessBase"]
[PlyCount "82"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 3. Nxe5 {[%emt 0:00:19]} d6 {[%emt 0:00:00]} 4. Nf3 {[%emt 0:00:10]} Nxe4 {[%emt 0:00:06]} 5. Nc3 {[%emt 0:00:17]} Nxc3 {[%emt 0:00:48]} 6. dxc3 {[%emt 0:00:08]} Be7 {[%emt 0:00:17]} 7. Be3 {[%emt 0:00:12]} O-O {[%emt 0:00:39]} 8. Qd2 {[%emt 0:00:18]} Nd7 {[%emt 0:00:39]} 9. O-O-O {[%emt 0:00:08]} c6 {[%emt 0:00:38]} 10. Kb1 {[%emt 0:08:16]} d5 {[%emt 0:01:17]} 11. h3 {[%emt 0:03:21]} Re8 {[%emt 0:05:30]} 12. c4 {[%emt 0:00:49]} Nb6 {[%emt 0:08:23]} 13. cxd5 {[%emt 0:29:40]} Nxd5 {[%emt 0:00:32]} 14. Bc4 {[%emt 0:01:33]} Be6 {[%emt 0:10:19]} 15. Bg5 {[%emt 0:17:51]} f6 {[%emt 0:26:01]} 16. Bh4 {[%emt 0:09:43]} Bf7 {[%emt 0:10:48]} 17. Rhe1 {[%emt 0:01:26]} b5 {[%emt 0:03:21]} 18. Bb3 {[%emt 0:02:21]} Qb6 {[%emt 0:10:34]} 19. Re2 {[%emt 0:04:17]} Red8 {[%emt 0:07:24]} 20. Qc1 {[%emt 0:04:27]} Bc5 {[%emt 0:02:21]} 21. Nd2 {[%emt 0:02:52]} a5 {[%emt 0:05:05]} 22. Ne4 {[%emt 0:00:27]} Bf8 {[%emt 0:04:39]} 23. c4 {[%emt 0:07:22]} a4 {[%emt 0:01:35]} 24. c5 {[%emt 0:00:28]} Qa7 {[%emt 0:00:24]} 25. Bxd5 {[%emt 0:02:10]} Bxd5 {[%emt 0:00:44]} 26. Nd6 {[%emt 0:00:59]} Bxd6 {[%emt 0:01:47]} 27. cxd6 {[%emt 0:00:02]} Rxd6 {[%emt 0:01:21]} 28. Bg3 {[%emt 0:00:42]} Rdd8 {[%emt 0:01:38]} 29. Rde1 {[%emt 0:01:39]} Qf7 {[%emt 0:04:26]} 30. a3 {[%emt 0:00:50]} Bxg2 {[%emt 0:00:26]} 31. Re7 {[%emt 0:00:38]} Qg6+ {[%emt 0:01:51]} 32. Ka1 {[%emt 0:00:06]} Re8 {[%emt 0:01:32]} 33. Qc5 {[%emt 0:02:47]} Bd5 {[%emt 0:00:32]} 34. h4 {[%emt 0:02:35]} h5 {[%emt 0:00:30]} 35. Bf4 {[%emt 0:00:20]} Rxe7 {[%emt 0:00:42]} 36. Qxe7 {[%emt 0:00:03]} Rf8 {[%emt 0:00:25]} 37. Bd2 {[%emt 0:02:25]} Rf7 {[%emt 0:00:34]} 38. Qe2 {[%emt 0:00:26]} Rd7 {[%emt 0:00:27]} 39. Bc3 {[%emt 0:00:28]} Kh7 {[%emt 0:00:31]} 40. f4 {[%emt 0:00:00]} Qf5 {[%emt 0:00:00]} 41. Bd4 {[%emt 0:02:04]} Bf7 {[%emt 0:02:45]} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.5"]
[White "Eljanov, Pavel"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2650"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,107,31,28,29,53,61,48,51,64,67,56,37,62,25,15,0,71,63,69,45,41,44,36,20,19,18,16,19,29,6,15,0,59,11,16,12,68,62,62,71,103,103,150,93,140,0,0,-48,106,94,177,0,0,0,0,0,0,0,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,83,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. f4 a6 7. Nxc6 Qxc6 8. Bd3 b5 9. Qe2 Bb7 10. Bd2 Be7 11. a3 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2} Rc8 12. O-O-O Nf6 13. Rhe1 {White is slightly better.} b4 14. axb4 Bxb4 15. g4 d6 16. e5 dxe5 17. g5 {[#]} Bxc3 $146 (17... Nd7 $11) ({Predecessor:} 17... Nd7) 18. Bxc3 $16 Nd7 $1 19. Bxe5 (19. f5 {feels hotter.} O-O 20. Qh5 exf5 21. Bxf5 g6 22. Bxd7 gxh5 23. Bxc6 Bxc6 24. Rxe5 Rfe8 25. Rc5) 19... Nxe5 20. Qxe5 O-O 21. Qe4 Qxe4 22. Bxe4 Bxe4 23. Rxe4 $11 {[%mdl 4096] Endgame KRR-KRR} Rc6 24. c4 h6 25. gxh6 g6 (25... Rb8 $11) 26. Rd3 Kh7 27. Rh3 Rd8 (27... Rb8 $11) 28. b3 $1 $14 a5 29. Kb2 $1 Rd2+ 30. Ka3 $1 Rf2 {[#]} 31. Re5 (31. Rc3 $142 $1) 31... Ra6 32. Ka4 ({Better is} 32. Rc3 $16) 32... Ra8 $11 (32... Rxf4 33. Rxa5 Rb6 34. Ra7 $16) 33. Rc5 Rb8 $2 ({Of course not} 33... Rxf4 34. Rxa5 Re8 35. Re3 $11) (33... Ra2+ $1 $15 {keeps the upper hand.} 34. Kb5 a4) 34. Ka3 $16 Ra8 {[#]} (34... Rxf4 $16 {was necessary.} 35. Rxa5 Rf1) 35. Rh4 $2 (35. Rc7 $1 $18) 35... Ra7 $11 36. Rb5 Rf3 {...a4 is the strong threat.} 37. Ka4 Rf1 {[%cal Rf1a1]} 38. Rb6 Ra1+ $1 39. Kb5 a4 40. bxa4 $1 R1xa4 {[#] Threatens to win with ...R7a5+.} 41. Rb7 $1 {[%mdl 512] And now Rxf7+! would win.} R7a5+ ({Don't play} 41... Rxb7+ $6 42. Kxa4 Rc7 43. Kb4 $16) 42. Kb6 Rf5 43. Rc7 Rb4+ 44. Ka6 e5 45. fxe5 {Strongly threatening e6.} Rf1 {[%cal Rf1a1]} (45... Rf2 $5 46. Rc5 $8 Ra2+ 47. Ra5 Rc2 $11) 46. Rc5 $1 Ra1+ 47. Ra5 Rc1 {The position is equal.} 48. Rf4 Rcxc4 49. Rxf7+ Kxh6 50. Re7 Kg5 51. Ra2 Ra4+ 52. Rxa4 Rxa4+ 53. Kb5 Ra2 54. Kc5 {Accuracy: White = 64%, Black = 55%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.6"]
[White "Mamedov, Rauf"]
[Black "Grandelius, Nils"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "2659"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,101,31,36,27,33,51,61,55,0,0,0,0,0,-34,-84,0,1,29,19,20,30,19,25,13,8,33,34,25,28,50,29,77,68,68,70,61,54,95,96,105,117,136,111,110,104,115,111,103,102,116,107,104,112,157,154,154,159,200,209,237,246,241,241,237,235,240,239,230,235,216,207,506,506,521,239,520,227,222,216,216,216,979,979,835,835,754,680,418,418]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 {C58: Two Knights: 4 Ng5 d5 5 exd5 Na5 sidelines} 9. h4 (9. Nf3 Bd6 10. O-O O-O 11. Re1 Re8 12. Nc3 f5 13. Bf1 e4 14. Nd4 Bc5 15. Nb3 Nxb3 16. axb3 {1-0 (32) Aronian,L (2775)-Amin,B (2683) Moscow 2019}) 9... h6 10. Qh5 $1 {[%csl Gg5][%cal Rh5f7]} Qf6 $1 {And now ...Nf4 would win.White is slightly better.} 11. Ne4 ({White should try} 11. Nh7 $1 $14 Qf4 12. Nxf8) 11... Qe6 $11 12. b3 g6 13. Qe2 f5 {White must now prevent ...Nf4.} 14. Ng3 $146 ({Predecessor:} 14. Nec3 Bg7 15. Nxd5 Qxd5 16. f3 {1-0 (95) Poetsch,H (2481)-Eichler,C (2304) Schwarzach 2017}) 14... e4 (14... Bg7 $17 15. Bb2 Nf4) 15. Bb2 Nf4 16. Bc4 $1 {[%cal Rc4e6]} Nxc4 (16... Nxg2+ $2 17. Kf1 $18) 17. Qxc4 Qxc4 18. bxc4 Rg8 19. Be5 g5 20. hxg5 hxg5 21. Nh5 Nxh5 ({Of course not} 21... Nxg2+ $6 22. Kf1 $16) 22. Rxh5 Rg6 23. Nc3 Re6 24. Bd4 $36 {[%mdl 2048] White is pushing.} Ba6 25. g4 fxg4 26. Rxg5 O-O-O 27. Be3 ({Stronger than} 27. Bxa7 Bh6 $15) 27... Bb4 {...Bxc3 is the strong threat.} 28. Rxg4 Bxc3 29. dxc3 Bxc4 30. Bxa7 Rh6 {( -> ...Rh1+)} 31. Rg1 Rhd6 32. Bd4 Rd5 33. a4 R8d7 34. Rb1 Ra5 35. Rg6 c5 36. Be5 {[%csl Ge5][%cal Rb1b8]} Rb7 37. Rc6+ Kd7 38. Rd6+ ({But not} 38. Rxb7+ $6 Kxc6 39. Rc7+ Kd5 $16) 38... Kc8 39. Rbd1 {[%csl Gd1][%cal Rd6d8]} Rh7 40. Rd8+ Kb7 41. Rb1+ Ka6 42. Kd2 {aiming for Bb8.} Rxa4 $2 (42... Rb7 43. Ra1 Ka7) 43. Bd6 $18 Rb7 44. Ra8+ Ra7 45. Rc8 (45. Rab8 $142 Rd7 46. Ke3) 45... Rd7 {[#]} 46. Rc6+ $1 Ka7 47. Ke3 Rb7 $2 (47... Ba6 48. Bxc5+ Ka8) 48. Bxc5+ Kb8 49. Rxb7+ Kxb7 50. Rb6+ Kc7 {[#]} 51. Rb4 $1 {Accuracy: White = 85%, Black = 53%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.12"]
[Round "2.7"]
[White "Van Foreest, Lucas"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2523"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,65,32,38,33,40,47,47,45,45,45,31,49,5,23,11,36,5,100,5,16,17,0,0,74,71,89,86,81,77,67,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. g3 a6 7. Bg2 Nf6 8. O-O Nxd4 9. Qxd4 Bc5 10. Bf4 d6 11. Qd2 h6 12. Rad1 e5 13. Be3 Bb4 {B47: Sicilian: Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2.} 14. Nb5 axb5 15. Qxb4 Rxa2 {White is slightly better.} 16. Rxd6 {[#] Black must now prevent Bb6.} O-O 17. Rd2 Be6 18. Rfd1 Ng4 19. Bc5 Rc8 20. Be7 {And now h3 would win.} (20. Bd6 $5 {[%cal Rd6c7]} Qb6 21. Bf1 $11) 20... Qb6 {[#]} (20... Ra4 $1 $11 21. Qd6 (21. Qxb5 Rd4 $11) 21... Rd4 22. Rxd4 exd4) 21. c3 {[#]} (21. Bf1 $1 $16) 21... Ra4 $146 ({Predecessor:} 21... Rc4 22. Qd6 Qa7 23. Bf1 Ra1 24. Rxa1 Qxa1 25. Qd3 Rc7 26. Qd8+ Kh7 27. Ba3 Rc8 {½-½ (55) Adams,M (2692)-Skytte,R (2373) Budva 2019}) 22. Qd6 Qxd6 23. Rxd6 Ra2 (23... b4 $1 $11) 24. R6d2 $16 Bb3 25. Re1 Rca8 26. Bh3 Ra1 27. Rxa1 (27. Rf1 $14 Bc4 28. Rd8+ Rxd8 29. Rxa1) 27... Rxa1+ $11 {The position is equal.} 28. Kg2 h5 29. Bxg4 hxg4 30. h3 Rd1 31. Rxd1 gxh3+ 32. Kxh3 Bxd1 33. Kg2 {Accuracy: White = 70%, Black = 81%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.1"]
[White "Ganguly, Surya Shekhar"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "E52"]
[WhiteElo "2636"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,121,26,23,27,13,0,7,0,0,0,0,27,32,1,90,87,91,80,92,90,87,91,80,87,89,97,81,82,82,26,22,18,22,18,15,14,31,21,24,29,44,0,15,20,21,15,16,15,36,27,23,25,72,60,73,87,64,48,89,87,93,94,91,87,124,131,117,98,100,0,118,0,104,91,144,106,146,134,142,38,72,38,28,32,44,16,16,16,16,20,52,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Rc1 Bb7 9. Bd3 a6 10. O-O Bd6 11. Ne5 {E52: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5 6 Bd3 b6} c5 12. Bb1 $146 (12. Be1 Nc6 13. f4 cxd4 14. Nxc6 Bxc6 15. Ne2 Bd7 16. Nxd4 Re8 17. Qb3 Qe7 18. Rf3 Bg4 {½-½ (27) Aleksandrov,A (2574)-Bosiocic,M (2614) Skopje 2019}) 12... Nbd7 13. f4 b5 14. Be1 cxd4 15. exd4 Be7 16. Qf3 Nxe5 (16... Nb6 $11 {remains equal.}) 17. dxe5 $16 Ne4 18. Rd1 g6 {[#]} 19. Nxd5 $1 {[%mdl 576] Remove Defender} Bxd5 20. Rxd5 {[%mdl 64] Remove Defender} Qxd5 21. Bxe4 Qd8 22. Bxa8 Qxa8 23. Qxa8 Rxa8 {[%mdl 4096] Endgame KRB-KRB} 24. Bf2 ({Better is} 24. Rf3 $16) 24... Rc8 $11 25. Be3 f6 $1 26. b3 fxe5 27. fxe5 Rc2 28. Rf2 Rc3 29. Rf3 Rc2 30. Rf2 Rc3 $1 {[%cal Rc3e3]} 31. Re2 Kf7 32. e6+ Ke8 33. Kf2 Bf6 34. g4 Rc6 35. Bd2 Be7 36. Kf3 Bf6 37. Bb4 Be7 38. Be1 Bf6 39. Kf4 h6 40. Kf3 Bg5 41. Bb4 Kd8 {[#]} 42. e7+ $1 Ke8 43. Re4 Bf6 44. Re2 Bg5 $1 45. Re4 Bf6 $1 46. Re3 Bd4 ({Black should try} 46... Bg5 47. Re4) 47. Re2 Bc5 {[#]} 48. Bxc5 $1 Rxc5 $16 {KR-KR} 49. Ke4 (49. Re6 $16) 49... h5 $1 $14 50. Kd4 Rg5 51. gxh5 Rxh5 52. Rg2 Kxe7 53. Rxg6 a5 54. Rg2 a4 55. Rd2 ({White should play} 55. h4 $14) 55... axb3 $11 {The position is equal.} 56. axb3 Kd6 57. Rg2 Rh4+ 58. Kc3 Kc5 59. b4+ Kd5 60. Rg5+ Kc6 61. Rg2 {Accuracy: White = 73%, Black = 65%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.2"]
[White "Smeets, Jan"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "C83"]
[WhiteElo "2585"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,89,23,23,34,31,54,49,45,66,33,30,21,32,17,29,0,8,0,0,0,0,0,0,0,12,13,22,0,19,16,12,10,24,22,23,-8,-7,-7,-6,-36,0,0,0,0,0,0,0,-10,-18,-22,0,-18,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 Be7 11. Bc2 d4 12. Nb3 {[%cal Rb3d4] C83: Open Ruy Lopez: 9 c3 Be7} d3 13. Bb1 Nxb3 14. axb3 {White is slightly better.} Bf5 15. Be3 O-O 16. Re1 Qd5 17. Bd4 Rfd8 18. Re3 Nxd4 19. cxd4 c5 20. Bxd3 cxd4 {[#]} 21. Re2 $146 Qe6 22. h3 Bg6 23. Ne1 a5 {[%cal Ba6a5,Ba5a4,Ba4b3][%mdl 32]} 24. Kh2 h6 25. Bxg6 Qxg6 26. Qd3 Qxd3 27. Nxd3 a4 28. Rc2 axb3 29. Rcc1 Ra4 30. Kg3 f6 31. exf6 {The position is equal.} Bxf6 32. Re1 Rc8 33. Rad1 Kf7 34. Kf4 Rc2 35. Kf3 Ra7 36. Re4 Rac7 37. g3 R7c6 38. h4 Re6 (38... Rc8 {is more complex.} 39. h5 Rd8 40. g4 Kg8 41. Kg3 Kh7) 39. Ra1 Rxe4 40. Kxe4 $11 {KRB-KRN} Re2+ 41. Kd5 Rd2 $1 {[%cal Rd2d3]} 42. Ra7+ Ke8 43. Ke4 Re2+ 44. Kd5 Rd2 45. Ke4 {Accuracy: White = 58%, Black = 66%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.3"]
[White "Grandelius, Nils"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2673"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,6,20,12,13,22,25,0,20,8,14,4,5,14,14,14,18,20,20,18,21,20,23,23,10,23,23,20,24,25,25,20,30,11,13,15,24,18,14,16,16,0,0,0,0,0,0,0,0,0,0,0,17,15,5,10,22,31,26,27,31,20,27,27,36,8,10,14,13,8,3,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 $146 (5... O-O 6. O-O d6 7. h3 a6 8. Ba4 b5 9. Bc2 h6 10. Re1 Re8 11. b4 Bb6 12. a4 Bd7 13. Nbd2 Ne7 14. Nf1 a5 15. bxa5 Rxa5 {½-½ (62) Nakamura,H (2736)-Carlsen,M (2872) Moscow 2019}) ({Predecessor:} 5... O-O 6. O-O d5 7. exd5 Qxd5 8. Bc4 Qd6 9. b4 Bb6 {½-½ (31) Salem,A (2660)-Nakamura,H (2746) St Petersburg 2018}) 6. exd5 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5} Qxd5 {[#] Threatens to win with ...Bxf2+!} 7. Bc4 Qd6 8. Nbd2 {White has an edge.} O-O 9. b4 Bb6 10. O-O Bf5 11. Qc2 $1 Rad8 {[%cal Rf5d3]} 12. a4 {Black should prevent a5.} a5 13. b5 Ne7 {[%cal Rf5d3,Bc6e7,Be7g6,Bg6f4][%mdl 32]} 14. Qb3 Ng6 15. Ba3 Bc5 16. Bxc5 Qxc5 17. d4 $1 {[%cal Rd4c5]} exd4 18. cxd4 Qd6 19. Rfe1 Nf4 20. Ne5 {[%cal Re5f7]} N4d5 21. Ndf3 h6 22. Rac1 Rfe8 23. h3 Be6 24. Nd3 Nd7 25. Qd1 N7b6 26. Bb3 Nf4 27. Nxf4 Bxb3 28. Qxb3 Qxf4 29. Qc3 Rxe1+ 30. Rxe1 Qd6 31. Qxa5 Ra8 32. Qd2 Nxa4 33. Ra1 Qd8 34. Qc2 Nb6 35. Rxa8 Nxa8 36. Qe4 Qc8 37. Qe7 f6 $1 {The position is equal.} 38. Nh4 Nb6 39. Ng6 Qd7 40. Qf8+ Kh7 41. Ne7 {[%csl Ge7][%cal Rf8g8] [#]} Qe6 42. Qd8 {Hoping for d5.} c6 $1 43. bxc6 bxc6 44. Qe8 f5 {aiming for ...Nd5.} (44... Nd5 $5 45. Qg6+ $8 Kh8 $11) 45. Qxc6 {Accuracy: White = 59%, Black = 87%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.4"]
[White "Nihal Sarin"]
[Black "Smirnov, Anton"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2618"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,5,21,29,26,7,15,22,59,54,51,54,76,74,108,67,91,58,87,88,82,52,57,54,56,19,25,21,23,38,36,51,51,51,58,62,61,49,50,49,62,50,93,109,98,61,112,95,100,86,95,68,70]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bg5 (4. Nf3 Nf6 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 {½-½ (10) Dreev,A (2677)-Mamedyarov,S (2772) Moscow 2019}) 4... h6 5. Bh4 Qb6 6. Nc3 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3} e6 7. Qd2 Nc6 8. e3 {The position is equal.} Nge7 9. Bd3 $1 Bd7 10. Nf3 g5 11. Bg3 Bg7 12. Rc1 $146 a6 13. Na4 Qd8 14. Nc5 Bc8 15. b4 O-O 16. O-O Nf5 17. a3 Nxg3 18. hxg3 g4 19. Nh4 Ne7 20. Bb1 f5 21. Nd3 Bd7 22. Nf4 Rc8 23. f3 Rxc1 24. Rxc1 gxf3 25. gxf3 Nc6 26. Kf2 Rf7 27. Nd3 b6 ({Better is} 27... Qf6 $14) 28. Ng2 Be8 29. Ngf4 Qd6 30. Bc2 Nd8 {Accuracy: White = 46%, Black = 58%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.5"]
[White "Keymer, Vincent"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2527"]
[BlackElo "2498"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,8,8,10,18,0,0,-2,0,-7,0,0,0,14,15,0,0,0,0,0,0,0,0,0,0,0,20,18,62,55,48,29,29,29,41,29,40,44,52,21,37,0,23,18,39,33,60,67,77,77,65,66,66,66,66,66,65,69,73,70,80,76,77,60,54,52,50,42,56,-31,-31,-31,-31,-31,-31,-31,-31,-18,-25,-79,-8,-8,0]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 c5 5. cxd5 exd5 6. Bb5+ {A17: English Opening: 1...Nf6 with ...Bb4} Nbd7 7. O-O a6 8. Be2 Bd6 9. b3 O-O $146 ({Predecessor:} 9... b5 10. Bb2 O-O 11. Rc1 Nb6 12. a4 b4 13. Nb1 a5 {1-0 (43) Bok,B (2645)-Werle,J (2555) Amsterdam 2019}) 10. d4 b5 11. dxc5 Nxc5 12. Ba3 Bb7 13. Rc1 Rc8 14. Nd4 Re8 15. Bg4 Nxg4 16. Qxg4 h5 17. Qd1 Qf6 18. Nce2 ({Of course not} 18. Qxh5 Nd3 $15) 18... h4 19. h3 Qg6 20. Nf4 Bxf4 21. Bxc5 Bb8 {[#] Hoping for ...Rxc5!} 22. Qg4 Qxg4 23. hxg4 g6 24. Rfe1 Re4 25. f3 Ree8 26. b4 Bg3 27. Red1 Rxe3 28. Nf5 $1 $36 {[%cal Rf5e3][%mdl 2048] White has some pressure.} Rxc5 29. Nxe3 Rxc1 30. Rxc1 $14 {[%mdl 4096] Endgame KRN-KB} Bf4 31. Re1 d4 32. Nf1 $1 Bd5 33. Re8+ Kg7 34. Rd8 Bxa2 35. Rxd4 Be5 36. Re4 Bc3 37. g5 h3 38. Ne3 Bb1 39. Nd5 (39. Rg4 $14) 39... Bxe4 $15 40. Nxc3 {KB-KN} Bc6 41. gxh3 Bxf3 42. Kf2 Bb7 {White must now prevent ...f6.} 43. Ke3 f6 44. Kf4 $1 fxg5+ (44... Kf7 $17 45. Ne2 Bd5) 45. Kxg5 $11 a5 {Accuracy: White = 68%, Black = 52%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.6"]
[White "L'Ami, Erwin"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2606"]
[BlackElo "2523"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,74,13,17,18,16,19,13,19,19,19,22,14,21,20,14,16,21,22,20,20,24,21,19,6,5,8,6,-31,-31,-27,-27,-43,-58,-72,-72,-88,-86,-84,-14,-75,-84,-106,-72,-104,-104,-110,-90,-84,-83,-88,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {[%cal Bb1c3,Bc3d5,Bd5e3,Be3f5][%mdl 32] C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} Ne8 10. Nd5 Bd6 11. Re1 c6 12. Ne3 Be7 13. Nf5 Bf6 14. Qe2 {[#]} Kh8 $146 ({Predecessor:} 14... d5 15. Ne7+ Bxe7 16. Qxe7 Qxe7 17. Rxe7 {½-½ (30) Wang,H (2730)-Aronian,L (2765) St Petersburg 2018}) 15. Ne7 Nc7 16. Nxc8 Qxc8 17. c3 d5 18. d4 Re8 19. Be3 Bg5 20. Qf3 Bxe3 21. fxe3 f5 22. Bd3 g6 23. g4 fxg4 24. Qf6+ Kg8 25. e4 dxe4 26. Bxe4 ({Avoid the trap} 26. Bc4+ $2 Nd5 $19) 26... Qe6 (26... Qd8 $17 27. Qf4 Qd7) 27. Qf4 (27. Qh4 $11 {keeps the balance.}) 27... Qd7 $17 28. Bd3 Kg7 29. Re5 Nd5 30. Qg5 ({But not} 30. Rxd5 $2 Qxd5 31. Rf1 Rf8 $19) 30... Qd8 31. Qxg4 Rxe5 32. dxe5 Ne3 ({Better is} 32... Qb6+ $17 33. Qd4 Rd8 34. Qxb6 Nxb6) 33. Qf4 $1 $11 {[%cal Rf4e3] The position is equal.} Qxd3 34. Qf6+ Kh6 35. Qh4+ Kg7 {[#] Hoping for ...Rf8.} 36. Qf6+ Kh6 37. Qh4+ Kg7 {Accuracy: White = 65%, Black = 71%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.13"]
[Round "3.7"]
[White "Anton Guijarro, David"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "D19"]
[WhiteElo "2694"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,64,17,28,26,28,28,29,30,28,25,24,22,28,18,18,18,18,18,18,11,18,18,18,18,19,19,19,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O Nbd7 9. Qe2 O-O 10. e4 Bg6 11. Bd3 Bh5 12. e5 Nd5 13. Nxd5 cxd5 14. Qe3 Be7 15. Ng5 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2} Bxg5 16. Qxg5 Qxg5 17. Bxg5 {White has an edge.} Nb8 18. Bd2 Nc6 19. Bc3 {[#]} a5 $146 ({Predecessor:} 19... Bg6 20. Be2 Rac8 21. a5 Rc7 22. Rfe1 Rfc8 {½-½ (35) Cori Tello,J (2549)-Mastrovasilis,D (2608) Tromsoe 2014}) 20. Ra3 Bg6 {The position is equal.} 21. Bb5 Rfc8 22. h4 h5 23. Rfa1 b6 24. f3 f6 25. exf6 gxf6 26. Re1 Kf7 27. Raa1 Rc7 28. Rac1 Rac8 {...Nxd4! is the strong threat.} 29. Ba6 Ra8 30. Bb5 Rac8 {Hoping for ...Nxd4!} 31. Ba6 Ra8 32. Bb5 Rac8 {Accuracy: White = 70%, Black = 79%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.1"]
[White "Van Foreest, Lucas"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B17"]
[WhiteElo "2523"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,116,17,16,20,17,17,14,19,0,8,14,14,12,3,15,16,11,22,21,19,19,20,18,40,31,29,29,23,24,29,29,29,29,30,22,26,19,37,0,0,0,0,0,2,0,20,0,0,-44,-8,-8,0,-93,0,0,39,14,64,52,431,412,433,363,755,683,674,657,1946,920,29982,29983,6215,46,818,46,46,46,46,46,46,46,46,46,46,46,46,46,46,24,46,46,46,46,46,46,46,8,46,20,24]} 1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Nd7 7. Bc4 Nf6 8. Qe2 Bf5 9. d4 e6 10. O-O h6 {B17: Caro-Kann: Modern Line (4...Nd7)} (10... Qc7 11. h3 O-O-O 12. a4 h6 13. c3 g5 14. Ne5 Rg8 15. a5 Bd6 16. g4 Bg6 17. f3 Bxe5 18. Qxe5 Qxe5 19. dxe5 {0-1 (57) Guliyev,N (2557)-Kovalenko,I (2653) Wroclaw 2014}) 11. Bf4 Bd6 12. Be5 $146 ({Predecessor:} 12. Ne5 O-O 13. c3 Qc7 14. Rad1 Rad8 15. Rfe1 Rfe8 16. Qf3 Nd5 17. Bg3 a5 18. Bb3 Ra8 19. a4 f6 20. Nd3 Qb6 21. Nc1 Qc7 22. Bxd6 Qxd6 23. c4 Nb4 24. c5 {1-0 (23) Canamas Soler,J (2274)-Winbush,J (1848) ICCF email 2013}) 12... O-O 13. h3 Nd5 14. c3 Nf4 15. Qe3 {Qxf4 is the strong threat.} Nd5 16. Qd2 Bxe5 17. Nxe5 Qd6 18. Rfe1 Rad8 19. Rad1 Nb6 {Hoping for ...f6.} 20. Bb3 Nd7 21. g4 Bh7 22. Nxd7 Rxd7 23. Re5 Qxe5 24. dxe5 Rxd2 25. Rxd2 $11 {[%mdl 4096] Endgame KRB-KRB} Rb8 26. Rd7 Kf8 27. f4 Ke8 28. Bxe6 Bg8 29. f5 ({But not} 29. Bf5 g6 $17) 29... fxe6 30. Rxg7 {KRB-KR} Bf7 31. Rh7 Rd8 32. Rxh6 exf5 33. gxf5 Bxa2 34. Rh8+ Kd7 35. e6+ {[#]} (35. Rh7+ $11 {remains equal.} Kc8 36. e6) 35... Kc8 (35... Kc7 $1 $17 36. Rh7+ Kd6 37. Rxb7 Bb1) 36. Rh7 Rg8+ 37. Kf2 {[%mdl 1024] White has compensation.} Rf8 {aiming for ...Bxe6.} (37... Bb1 $5 {[%cal Rb1f5]} 38. Rf7 Kd8 $11) 38. Kg3 Bb1 $2 {[%mdl 8192]} (38... Rxf5 $14 39. Rh8+ Kc7) 39. Rf7 $18 Re8 40. Kf4 a5 $2 (40... Rh8 41. Kg5 Bc2) 41. h4 Rh8 42. Ke5 a4 43. h5 (43. e7 $142 Kd7 44. Rf8 Kxe7 45. Rxh8) 43... Rxh5 44. Kd6 {[%cal Rf7f8]} Rxf5 {[#]} 45. e7 $2 ({White has to play} 45. c4 $1 $18 {Threatens to win with e7!} Kd8 46. Rxb7) 45... Rd5+ $14 46. Ke6 Ba2 47. Rf8+ Kc7 {Strongly threatening ...Rd6+.} 48. e8=Q Rd8+ $1 49. Ke5 {[%csl Gf8][%cal Re8d8]} Rxe8+ 50. Rxe8 {KR-KB} c5 $1 51. Rh8 Bb3 52. Rh1 b5 53. Rh8 Bc4 54. Rh4 Bb3 55. Rf4 Kc6 56. Rf6+ Kc7 57. Rd6 Bc4 58. Rd2 Bb3 {Accuracy: White = 59%, Black = 51%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.2"]
[White "Warmerdam, Max"]
[Black "Nihal Sarin"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2498"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,16,40,39,52,30,26,29,25,7,15,14,10,14,11,10,16,16,13,0,0,0,0,0,0,0,45,-7,0,0,0,0,0,0,0,-37,-31,-122,-126,-118,-116,-127,-126,-128,-122,-104,-115,-143,-166,-194,-188,-195,-191,-190,-174,-158,-141,-327,-320,-293,-301,-383,-364,-465,-451,-518,-492,-437]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 (4... cxd4 5. Qxd4 e6 6. Nc3 Nc6 7. Qf4 h6 8. h4 g6 9. Bd3 a6 10. O-O Nge7 11. Ne2 Nf5 12. c3 {0-1 (58) Karjakin,S (2754)-Wei,Y (2725) Jerusalem 2019}) 5. dxc5 e6 6. Be3 {B12: Caro-Kann: Advance Variation} Nh6 7. c3 (7. Bxh6 $5 gxh6 8. Nc3 $11) 7... Nf5 8. Qd2 {White has an edge.} Bd7 9. Na3 Nxe3 $146 ({Predecessor:} 9... b6 10. cxb6 Bxa3 11. b7 Rb8 12. bxa3 Nxe3 {½-½ (43) Kurgansky,V (2426)-Efremov,A (2171) ICCF email 2009}) 10. Qxe3 b6 $1 11. cxb6 $1 Bxa3 12. b7 Rb8 13. bxa3 Rxb7 14. Ba6 Rb2 15. O-O Qb6 16. Qc1 O-O 17. Bd3 h6 18. c4 (18. a4 $14) 18... Rb8 19. cxd5 exd5 20. Rb1 Rxb1 21. Bxb1 Bg4 22. Qc2 {Threatens to win with Qh7+.} g6 23. Re1 (23. Qd2 $15) 23... Bxf3 $1 $17 24. gxf3 {[#]} Nxe5 $1 {[%mdl 512]} 25. Rxe5 {And now Re1 would win.} Qxb1+ 26. Qxb1 Rxb1+ {[%mdl 4096] Endgame KR-KR} 27. Kg2 {[#]} Rb5 $1 28. Re3 Kg7 29. Rb3 {[#]} Ra5 $1 30. f4 Kf6 31. Kf3 Kf5 32. Rd3 {[#]} d4 $1 {[%mdl 512]} 33. h3 $2 (33. Rxd4 $17 Rxa3+ {[%mdl 64] Double Attack} 34. Kg2) 33... Ra4 $19 34. Rb3 a6 35. Rd3 Rc4 {aiming for ...Rc3.} 36. Rd2 h5 37. h4 Rc3+ 38. Ke2 {Accuracy: White = 32%, Black = 87%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.3"]
[White "Abdusattorov, Nodirbek"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2635"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "208"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,208,0,0,0,0,0,0,27,18,0,0,18,0,-16,-20,-25,-24,-33,-33,-23,-16,-12,4,-45,-48,-44,-22,-24,-23,-20,-38,-41,-40,-34,-36,-47,-29,-28,-30,-39,-35,-47,-40,-42,0,0,0,0,0,0,8,8,12,6,0,0,0,0,0,0,0,0,0,0,-4,-33,-52,-133,-60,-91,-97,-188,-194,-190,-187,-118,-77,-112,-76,-140,-140,-154,-173,-190,-190,-240,-226,-248,-252,-237,-245,-247,-60,-60,-60,-60,-60,-60,-39,-39,-56,-53,-52,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-66,-66,-66,-66,-66,-66,-66,0,-61,-61,-66,-67,-67,-67,-68,-68,-68,-68,-73,-70]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Re8 11. Nbd2 Bf8 12. d5 Nb8 {[%cal Bc6b8,Bb8d7,Bd7c5][%mdl 32]} 13. Nf1 Nbd7 14. Ng3 Nc5 15. Bc2 {C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations} c6 {[%cal Rc6d5]} 16. b4 Ncd7 {[%cal Rc6d5]} (16... Na4 17. Bxa4 bxa4 18. c4 cxd5 19. cxd5 Qd7 20. Bg5 Be7 21. Nf5 Bd8 22. Nh2 Nxe4 {½-½ (60) Hammer,J (2625)-Chigaev,M (2623) Budva 2019}) 17. dxc6 {The position is equal.} Bxc6 18. Bb3 {Threatens to win with Ng5.} h6 19. Nh4 a5 20. Ng6 a4 21. Nxf8 Nxf8 ({Much worse is} 21... Rxf8 $6 22. Bc2 $14) 22. Bc2 $1 d5 23. exd5 Qxd5 24. Qxd5 Nxd5 25. Ne4 $146 Rad8 26. Bd2 Nb6 27. Rad1 Ne6 28. Bc1 Bd5 29. Bd3 Bc4 30. Bf1 Bxf1 31. Kxf1 {Black should prevent Nd6.} Nc7 32. Nd6 Re6 33. Nf5 Rxd1 34. Rxd1 Ncd5 35. Rd3 Kh7 (35... Rc6 $5 {[%cal Rc6c3]} 36. Bd2 h5 $15) 36. Ne3 Nf4 37. Rd8 Rc6 38. Bd2 f6 39. Rb8 h5 40. Rb7 Ne6 41. Ke2 Nc7 42. g3 Kg6 43. Rb8 Kf7 44. Kd3 g6 45. f4 h4 46. fxe5 hxg3 {aiming for ...Nbd5.} 47. exf6 ({White should try} 47. Ke2 $15) 47... Nbd5 (47... Nc4 $1 $17 48. Bc1 Nxe3 49. Bxe3 g2) 48. Rb7 Kxf6 {Hoping for ...Nf4+.} 49. Ng2 (49. Be1 $17 {was called for.}) 49... Ke5 $19 50. Nh4 Nf4+ $1 51. Ke3 {[#]} Ncd5+ $1 52. Kf3 g5 53. Rxb5 ({Better is} 53. Ng2) 53... gxh4 $17 54. Bxf4+ {[%mdl 4096] Endgame KRB-KRN} Ke6 55. Bd2 {[#]} Rc8 $1 {[%cal Rc8f8]} ({But not} 55... Nxc3 56. Rh5 $15) 56. c4 Rxc4 {White must now prevent ...g2!} 57. Rc5 Rd4 58. Bg5 Nxb4 59. Be3 Rd1 $2 (59... Rd3 $19 60. Ke4 Rd1) 60. Rc4 $1 $15 {[%cal Rc4b4]} Nd5 {Strongly threatening ...Rf1+.} 61. Ba7 $1 Rd3+ 62. Ke4 Rd2 63. Rxa4 Nc3+ 64. Ke3 Rd7 65. Rxh4 Rxa7 {KRN-KR} 66. Kf3 Rxa2 67. Kxg3 Ke5 68. Rh5+ Ke4 69. Rh8 Nd5 70. Re8+ Kf5 71. Rf8+ Nf6 72. Kf3 Ra3+ 73. Kg2 Ke5 74. h4 Nh5 75. Kf2 Rh3 76. Ra8 Nf6 77. h5 Rxh5 78. Ra5+ Nd5 79. Ra8 Rh2+ 80. Kf3 Rh3+ 81. Kf2 Ne3 82. Ke2 Nf5 83. Re8+ Kf4 84. Kd2 Nd6 85. Rf8+ Ke4 86. Rd8 Nc4+ 87. Kc2 Ne3+ 88. Kd2 Rh2+ 89. Kc3 Nd5+ 90. Kc4 Rc2+ 91. Kb3 Rc3+ 92. Kb2 Rc5 93. Rh8 Kd3 94. Rh3+ Ne3 95. Kb3 Rb5+ 96. Ka4 Rb8 97. Rh4 Kc3 98. Rh3 Kd3 ({Black should play} 98... Kd4 $15) 99. Rh5 (99. Rh4 $1 $11) 99... Rb1 100. Rh3 Kd4 101. Rh4+ Kc5 102. Rh5+ Nd5 103. Ka3 Rb8 104. Ka4 Kc4 {Accuracy: White = 69%, Black = 79%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.4"]
[White "Mamedov, Rauf"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2659"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,128,20,15,18,14,11,18,21,0,0,0,0,0,0,0,22,0,0,0,0,0,-16,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,-17,-5,-7,0,0,0,0,0,-5,0,-4,0,-68,-24,-20,0,-37,0,0,0,0,0,-8,0,-2,-4,0,0,-8,-8,-8,-8,-8,-8,-8,0,-22,-29,-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]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 O-O 7. O-O h6 8. Re1 Bb6 9. Bb3 Re8 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} 10. Nc4 Be6 11. a4 (11. Bc2 Bxc4 12. dxc4 Ne7 13. Nh4 Qd7 14. h3 Qe6 15. Qf3 Nd7 16. Qg3 Qf6 17. Bd2 {1-0 (67) Zhigalko,S (2671)-Zhang,Z (2645) Doha 2016}) 11... Ng4 12. Rf1 $146 ({Predecessor:} 12. Nxb6 Bxb3 13. Qxb3 axb6 14. Bd2 Nf6 15. c4 Qd7 16. Qc2 Nh5 17. Qd1 Nf6 18. Bc3 Qg4 19. h3 Qg6 20. Nh4 Qg5 21. Nf3 Qh5 22. Nh2 {½-½ (22) Swaminathan,R (2060)-Chen,S (1909) Parsippany 2010}) 12... d5 13. Nxb6 axb6 14. Bc2 dxe4 15. dxe4 Na5 16. b4 Qxd1 17. Rxd1 Bb3 18. Bxb3 Nxb3 19. Ra3 Nxc1 (19... Red8 {is interesting.} 20. Re1 Nxc1 21. Rxc1 Ra6 22. Re1 Rda8) 20. Rxc1 Nf6 21. Re1 Re6 22. Kf1 Ne8 23. Nd2 Rc6 24. Ke2 Nd6 25. f3 g6 26. Rc1 Kg7 27. g3 f5 28. Raa1 b5 29. a5 fxe4 30. fxe4 Rf8 31. Rc2 g5 32. Rf1 Ra8 33. Ra1 g4 34. Kd3 Rd8 {Strongly threatening ...Nf5+.} 35. Ke3 Kg6 36. Rac1 Nc4+ 37. Ke2 h5 38. Rf1 Nd6 39. Rcc1 ({White should play} 39. Rfc1 $11) 39... Ra8 40. Kd3 Rd8 41. Kc2 Nf7 42. Rcd1 Rd4 43. Rf5 Rxb4 {[#] ...Rd4 is the strong threat.} 44. Rdf1 Nd6 45. Rxe5 {And now Re6+ would win.} Nc4 46. Nxc4 Rbxc4 47. Rxb5 Rxc3+ $11 {[%mdl 4096] Endgame KRR-KRR} 48. Kb1 R6c5 49. Rxb7 Rxa5 50. Rb8 Rc4 51. Rf4 (51. Rff8 {looks sharper.} Rac5 52. Rh8 Rc1+ 53. Kb2 R1c2+ 54. Kb1) 51... Re5 52. Kb2 Rcxe4 {The position is equal.} 53. Rg8+ $1 Kh7 54. Rff8 $1 Rb5+ 55. Kc3 Re7 56. Kc4 Rbe5 57. Kd4 c5+ 58. Kc4 Rg7 59. Rh8+ Kg6 60. Rc8 Rf7 61. Rcg8+ Rg7 62. Rc8 Rge7 63. Rcg8+ Kf7 64. Rf8+ Kg6 {Accuracy: White = 85%, Black = 65%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.5"]
[White "Saduakassova, Dinara"]
[Black "Ganguly, Surya Shekhar"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2519"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,52,47,48,47,46,52,56,49,45,45,41,45,51,52,18,18,2,66,52,56,96,105,108,142,-40,-13,-891,-797,-881,-887,-29984,-29985,-29985,-29986,-29988,-29989,-29989,-29990,-29990,-29991]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. e3 Rb8 8. Nfd2 e5 {E04: Open Catalan: 5 Nf3} 9. Bxc6+ bxc6 10. dxe5 Ng4 {White is slightly better.} 11. Nxc4 Be6 12. Nbd2 (12. Qe2 h5 13. Rd1 Qc8 14. Qf3 Rb6 15. Nxb6 cxb6 16. h4 Nxe5 {½-½ (41) Grischuk,A (2759)-Ding,L (2811) Khanty-Mansiysk 2019}) 12... Bb4 13. b3 $146 ({Predecessor:} 13. Qc2 h5 {0-1 (23) Kim,Y (2360)-Matsenko,S (2533) Sturbridge 2018}) 13... h5 14. Qc2 h4 {aiming for ...Nxh2!} 15. Nf3 $1 {h3 is the strong threat.} hxg3 (15... Qd7 $11) 16. fxg3 $14 Bc5 17. h4 Rh5 18. Kg2 $1 g5 {[%cal Rg5h4]} 19. e4 $2 ({But not} 19. Nxg5 $2 {[#]} Qxg5 $1 {[%mdl 512]} 20. Qe4 (20. Nd6+ $2 cxd6 21. e4 Qxe5 $19) 20... Bd5 $1 $19 {[%mdl 512]}) (19. Rd1 $1 $16 {[%cal Rd1d8]} Qc8 20. Nxg5 Rxg5 21. hxg5 Bd5+ 22. Rxd5 cxd5 23. Na5 Nxe5 24. Bb2 (24. Qxc5 Qg4 $11)) 19... gxh4 $15 20. Nxh4 $2 {[%mdl 8192]} (20. gxh4 $11 Rxh4 21. Rd1 (21. Nxh4 $2 Qxh4 22. Bf4 Nxe5 $19)) 20... Rxh4 $19 21. gxh4 Qxh4 {Hoping for ...Qh2+.} 22. Rh1 {[#]} Nh2 $1 {[%csl Ge6][%cal Rh4h3][%mdl 512] Black mates.} 23. Be3 (23. Rxh2 Qg4+) 23... Qh3+ {[%mdl 64] Double Attack} 24. Kg1 Bxc4 25. Rxh2 Qxe3+ 26. Kh1 {[#]} Bd3 $1 {[%mdl 64] Double Attack. Accuracy: White = 43%, Black = 67%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.6"]
[White "Anton Guijarro, David"]
[Black "Smeets, Jan"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2694"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,117,47,51,67,69,80,73,88,97,81,64,86,97,113,117,127,119,184,182,214,188,182,147,325,307,291,281,447,434,424,404,384,393,380,375,345,261,248,150,212,210,336,278,217,227,197,178,178,172,144,130,133,127,124,125,141,132,123,125,153,159,180,73,81,72,92,87,135,133,170,166,164,165,206,219,258,189,188,176,204,183,269,22,965,909,785,631,1876,1719,29978,29979,29980,29981,29983,29984,29984,29985,29985,29986,29982,29983,29980,29981]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} Bf5 9. Re1 {[%cal Rd2e4]} Nd6 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} (9... Nxd2 10. Qxd2 Bxd3 11. Qxd3 O-O 12. Re2 Qd7 13. Bf4 Rfe8 14. Rae1 Bf8 15. c3 Rxe2 16. Rxe2 a6 17. h3 f6 18. Nd2 Ne7 19. Nf1 {½-½ (19) Giri,A (2783)-Yu,Y (2764) St Petersburg 2018}) 10. Nf1 O-O 11. Bf4 Be6 {White is better.} 12. c3 Qd7 13. Qc2 $146 ({Predecessor:} 13. b4 Bf6 14. a4 Rfe8 15. Ne3 Ne7 16. h3 {1-0 (16) Zolochevsky,V (2321)-Ramos Verdu,J (2035) ICCF email 2010}) 13... g6 14. Ne3 Rfe8 15. h4 Bf8 16. Ng5 Nd8 (16... Nf5 $16) 17. h5 $18 Bg7 18. hxg6 hxg6 19. Re2 b6 $2 (19... Bg4 $16) 20. Rae1 N8b7 21. Nxe6 Qxe6 (21... Rxe6 {was worth a try.} 22. Nxd5 Rxe2 23. Qxe2 Re8) 22. Nf5 Qd7 {Hoping for ...Rxe2.} 23. Nxg7 Kxg7 24. Be5+ f6 25. Bxg6 fxe5 26. Bxe8 ({Not} 26. Rxe5 Rxe5 27. dxe5 Nc4 $16) 26... Rxe8 27. Rxe5 {Strongly threatening Qd2.} Rxe5 (27... Nd8 $16 {was called for.} 28. Rxe8 Nxe8) 28. dxe5 ({Much less strong is} 28. Rxe5 $6 Nf7 $16) 28... Ne4 (28... Qf5 {is a better defense.} 29. Qd1 (29. Qxf5 Nxf5 30. b4 a5 $16) 29... Ne4) 29. f3 Ng5 30. Qd2 Qf5 31. Qxd5 Nc5 32. Qd8 Nge6 33. Qf6+ Qxf6 34. exf6+ Kxf6 35. Rd1 b5 36. g3 Na4 37. Rd2 a5 38. Kf2 Nb6 {[#]} 39. b3 (39. f4 $1 $18) 39... a4 $16 40. Ke2 Nc5 41. b4 Ne6 42. f4 a3 43. Kf3 Na4 44. Rc2 c6 45. g4 Nc7 46. Ke4 Nd5 47. g5+ Kg6 48. Ke5 Naxc3 (48... Nb2 $142) 49. Rc1 $2 ({White must play} 49. f5+ $18 Kxg5 50. Rg2+ Kh5 51. f6 Nxf6 52. Kxf6) 49... Kg7 $2 {[%mdl 8192] [#]} (49... Nxa2 $11 50. Rxc6+ Kh5) 50. f5 $1 $18 {[%cal Rf5f6]} Nxa2 51. Ra1 Naxb4 52. Rxa3 Nc7 53. f6+ {White mates.} Kg6 54. Rf3 Nba6 55. f7 Nc5 56. Rf6+ {[%mdl 64] Double Attack} Kxg5 57. Rd6 N7e6 58. Rxe6 Nd7+ {[#]} 59. Kd6 $1 {[%mdl 64] Double Attack. Accuracy: White = 75%, Black = 28%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.14"]
[Round "4.7"]
[White "Smirnov, Anton"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2604"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,72,37,41,26,8,8,8,0,0,0,2,3,11,11,8,0,0,0,22,0,0,-4,16,20,47,39,63,22,16,16,24,15,16,19,18,10,6,10,22,5,17,0,8,0,0,0,0,0,0,-10,0,0,0,-16,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. Be3 Ng4 9. Bg5 h6 10. Bc1 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (10. Bh4 {is interesting.} Nc6 11. Be2 Nge5 12. f4 Ng6 13. Bg3) 10... Nf6 11. Bd3 e5 12. Nde2 Be7 13. O-O {[#]} Be6 $146 ({Predecessor:} 13... O-O 14. Ng3 Nbd7 15. a4 Nc5 16. Be2 Be6 17. Bf3 Rc8 {½-½ (66) Grischuk,A (2750)-Vachier Lagrave,M (2795) Moscow 2017}) 14. f4 exf4 15. Nxf4 Nc6 16. Nxe6 fxe6 17. Bc4 Qc8 18. Bb3 O-O 19. Bf4 Kh8 20. Kh1 ({But not} 20. Bxd6 Rd8 $17) 20... Ne5 21. Qd4 Nf7 {[#] aiming for ...e5.} 22. Qc4 Qxc4 23. Bxc4 Nd8 24. Rad1 b5 {The position is equal.} 25. Bb3 Nh5 26. Be3 (26. g3 {keeps more tension.} Rb8 27. Be3 Rxf1+ 28. Rxf1 Nf6 29. Re1) 26... Rxf1+ 27. Rxf1 Nf6 28. a3 Rb8 29. Re1 Ng4 30. Bg1 Ne5 31. a4 Nd7 32. axb5 axb5 33. Ba2 Ra8 {[#] Threatens to win with ...b4.} 34. Bb3 Rb8 35. Ba2 Ra8 {White must now prevent ...b4.} 36. Bb3 Rb8 {Accuracy: White = 43%, Black = 69%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.1"]
[White "Eljanov, Pavel"]
[Black "Smirnov, Anton"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2650"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,75,32,30,31,27,33,14,15,11,10,20,11,19,4,22,8,11,11,40,53,97,95,97,91,106,103,91,87,173,123,121,73,73,71,64,61,61,73,121,144,238,221,227,237,220,221,340,323,291,306,468,460,447,447,399,461,641,634,812,741,935,807,29984,29983]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bh5 6. Nc3 e6 7. g4 Bg6 8. Ne5 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} Nbd7 9. Nxg6 hxg6 10. Bd2 {The position is equal.} Bb4 11. cxd5 exd5 12. f3 Bd6 $146 ({Predecessor:} 12... Qe7 13. Qc2 O-O-O 14. O-O-O Kb8 15. Kb1 Nb6 {½-½ (52) Le,Q (2713)-So,W (2760) Bucharest 2019}) 13. Qb3 Bg3+ 14. Kd1 b5 15. Rc1 {Black must now prevent Ne2.} Bd6 16. e4 {[%cal Re4d5]} dxe4 17. Nxe4 Nxe4 18. fxe4 Rc8 19. e5 Be7 20. Bg2 {[#] Hoping for e6.} Nb8 (20... O-O $16) 21. Be3 O-O 22. Kc2 c5 23. dxc5 Bxc5 24. Kb1 $36 {[%mdl 2048] Black is under pressure.} Bxe3 25. Qxe3 Qe7 26. Bd5 Na6 {[#]} (26... Rxc1+ $16 27. Rxc1 Na6) 27. Rxc8 $1 $18 Rxc8 28. Rf1 Rf8 29. e6 Kh7 (29... Kh8 $142 30. Qg3 (30. Rxf7 Rxf7 31. exf7 Qxe3 $14) 30... f5 31. gxf5 Rxf5 32. Rxf5 gxf5) 30. Qf3 f5 31. h4 ({Worse is} 31. gxf5 Rxf5 32. Qg2 Rxf1+ 33. Qxf1 Qg5 $11) 31... f4 (31... Nc7 $142 32. h5 g5) 32. h5 {White wants to mate with hxg6+.} g5 33. Qe4+ Kh8 {and the idea ...Nc5 leaves Black hopeful.} 34. Qe5 Nb4 35. Be4 Kg8 36. Qxb5 Qd6 37. a3 Rb8 38. e7 {Accuracy: White = 86%, Black = 45%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.2"]
[White "Ganguly, Surya Shekhar"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "C83"]
[WhiteElo "2636"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,79,40,27,9,10,10,10,10,16,15,21,0,0,0,14,15,12,-17,14,0,8,10,10,7,22,18,25,13,12,0,0,0,0,0,0,0,0,8,1,6,8,0,0,0,12,11,12,12,12,5,12,12,12,12,12,12,12,12]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Be7 10. c3 O-O 11. Bc2 f5 12. exf6 Nxf6 13. h3 {C83: Open Ruy Lopez: 9 c3 Be7} (13. a4 b4 14. Re1 Qd7 15. Nf1 Bg4 16. Ne3 bxc3 17. Nxg4 Nxg4 18. h3 cxb2 19. Bxb2 Nf6 20. Ng5 g6 {1-0 (28) Fedoseev,V (2677)-Vidit,S (2721) Moscow 2019}) 13... Qd7 14. Re1 Bd6 15. Nf1 {[#]} Rae8 $146 ({Predecessor:} 15... Bf5 16. Bxf5 Qxf5 17. Ne3 Qh5 18. Ng4 Kh8 19. a4 Nxg4 20. hxg4 Qxg4 21. axb5 axb5 22. Rxa8 Rxa8 23. Qxd5 {½-½ (60) De Firmian,N (2560)-Mikhalevski,V (2566) Las Vegas 2006}) 16. Ng3 Bf7 17. Bf5 Rxe1+ 18. Qxe1 Qe8 19. Bg5 Ne5 20. Nh4 Ng6 21. Qd2 Nxh4 22. Bxh4 Qe5 23. Re1 Ne4 24. Bxe4 dxe4 25. Rxe4 Qd5 {The position is equal.} 26. Qe1 Bg6 $1 {[#] White must now prevent ...Bxg3.} 27. Re2 Qxa2 28. Be7 Bxe7 29. b4 Qb1 $1 {[%cal Rb1e1]} 30. Qxb1 Bxb1 31. Rxe7 $11 {[%mdl 4096] Endgame KRB-KRN} c5 32. Ra7 cxb4 33. cxb4 Bg6 34. Ne2 Re8 35. Nf4 Re4 36. Nd5 Rd4 37. Ne7+ Kf8 38. Nxg6+ hxg6 39. Rxa6 Kf7 $1 40. Rb6 {Accuracy: White = 56%, Black = 59%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.3"]
[White "Nihal Sarin"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2618"]
[BlackElo "2523"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,104,7,13,0,2,-18,11,-7,35,14,8,0,0,0,0,0,60,54,64,-4,99,-52,-45,-65,-42,-43,-21,-89,-87,-134,-150,-156,-134,-125,-125,-116,-102,-102,-102,-102,-102,-103,-102,-103,-102,-102,-102,-103,-102,-102,-102,-102,-102,-102,-112,-352,-352,-339,-338,-378,-378,-378,-378,-406,-406,-439,-439,-425,-417,-406,-379,-522,-406,-858,-858,-843,-834,-843,-798,-662,-406,-6260,-6207,-5925,-5847]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. Nbd2 a6 7. Bb3 Ba7 8. h3 O-O 9. O-O Be6 10. Bc2 h6 11. Re1 Re8 12. Nf1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} d5 13. Bd2 {[#]} d4 $146 ({Predecessor:} 13... Qd7 14. N3h2 Rad8 15. Qf3 Nh7 16. Qg3 Kh8 17. Rad1 d4 18. Nf3 f6 19. Nh4 Ne7 {1-0 (34) Movsesian,S (2653)-Mamedyarov,S (2747) Huaian 2016}) 14. c4 {The position is equal.} b5 15. cxb5 axb5 {[%cal Ba6b5,Bb5b4][%mdl 32]} 16. a4 b4 $1 17. a5 Qd6 18. Ba4 Nd7 ({Black should play} 18... Bd7 $11) 19. Ng3 Nc5 20. Bxc6 (20. Nh4 $14) 20... Qxc6 (20... Bb3 $11 {remains equal.} 21. Qe2 Qxc6) 21. Bxb4 $2 {[#]} ({White must play} 21. Nxe5 $16 Qd6 22. Qh5) 21... Nb3 $36 {[%mdl 2048] Black has some pressure.} 22. Rb1 $1 ({Much weaker is} 22. Ra3 Qb5 $17) 22... Qb5 23. Ba3 Qxa5 24. Nf1 (24. Nh5 $11) 24... Qb5 $17 25. Qc2 Bb6 26. N1d2 Ra4 {Played: Bb6-a5} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.4"]
[White "Grandelius, Nils"]
[Black "Warmerdam, Max"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2673"]
[BlackElo "2498"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,109,12,14,14,7,12,20,33,36,26,31,22,19,11,20,17,22,17,30,37,33,33,39,33,33,33,26,29,42,36,31,15,42,37,37,39,90,35,42,42,40,34,39,47,85,98,99,92,86,31,34,32,28,35,41,9,0,0,0,0,258,258,258,258,258,258,258,258,243,236,158,166,152,136,141,150,225,204,228,206,222,165,572,574,535,381,1614,1484,1472,1371,5929,5708,5929,5612,11828,11828,6609,5808,5808,5929,4627,1964]} 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O Nd7 5. h3 Bh5 (5... Bxf3 6. Bxf3 e6 7. d3 Bd6 8. e4 Ngf6 9. Qe2 Qc7 10. Nc3 O-O-O 11. a4 Rdg8 12. Rb1 g5 {1-0 (37) Vachier Lagrave,M (2780)-Topalov,V (2740) Abidjan 2019}) 6. d4 {A07: Réti Opening: New York and Capablanca Systems} e6 7. c4 dxc4 8. Nbd2 {The position is equal.} Nb6 9. Qc2 Nf6 $146 ({Predecessor:} 9... Bg6 10. Qc3 Nf6 11. Ne5 Nfd5 12. Qf3 {½-½ (100) Minasian,A (2555)-Motylev,A (2634) Dubai 2003}) 10. Nxc4 Bg6 11. Qb3 Nxc4 12. Qxc4 Be4 13. Ne5 Bd5 14. Qd3 {e4 is the strong threat.} Bxg2 15. Kxg2 Bd6 16. Nf3 O-O 17. e4 Be7 18. Rd1 Rc8 19. b3 Qa5 20. Bd2 Qa3 21. Bc3 Rfd8 22. Ne5 c5 (22... Nd7 $14 23. Nc4 Qa6) 23. Qf3 (23. d5 $1 $16) 23... cxd4 $14 24. Bxd4 Qa5 {aiming for ...Rxd4!} 25. Nc4 Qa6 26. a4 b6 {[#]} 27. Bxf6 $1 Bxf6 28. e5 Be7 29. Nd6 ({Better is} 29. Rac1 $16) 29... Bxd6 $1 30. exd6 h6 31. Rac1 Rc5 32. b4 Rf5 33. Qe4 {Strongly threatening g4.} Qxa4 34. g4 $36 {[%mdl 2048] [#] White fights for an advantage.} Rd5 $2 {[%mdl 8192]} (34... Rc5 $1 $11 {[%mdl 512] and Black has nothing to worry.}) 35. Rxd5 $18 exd5 36. Qxd5 {[%mdl 4096] Endgame KQR-KQR} Qd7 37. Rc7 Qe6 38. Qxe6 fxe6 {KR-KR} 39. d7 {And now Rc8! would win.} ({Not} 39. Rxa7 Rxd6 40. Rb7 Kh7 $16) 39... Kf7 40. Rxa7 Ke7 41. Rb7 Rxd7 42. Rxb6 Rd4 (42... h5 $16 43. gxh5 Rd5) 43. b5 {[%cal Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Rb4 44. Rb8 Kf6 45. Kg3 h5 $2 (45... Rb3+ {is more resistant.} 46. f3 Ke5) 46. gxh5 Kg5 47. b6 {Black must now prevent b7.} Kxh5 $2 (47... Rb3+ 48. f3 Kxh5) 48. b7 {White is clearly winning.} Kg6 49. h4 Kh7 50. h5 e5 51. Kf3 Rb3+ 52. Ke4 Rb5 53. Kf5 Rb2 54. Kxe5 Re2+ 55. Kd4 {Accuracy: White = 70%, Black = 52%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.5"]
[White "Smeets, Jan"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2585"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,76,0,0,4,21,18,27,17,33,25,28,21,26,25,21,22,19,16,25,13,31,25,55,23,116,104,115,90,108,68,114,93,191,143,230,208,254,234,281,306,266,217,227,216,515,497,587,563,539,471,447,297,491,437,1210,1178,1133,1126,29998,29999,29999]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 d5 8. e5 Ne4 9. Bxc6 bxc6 10. Be3 {B31: Sicilian: 2...Nc6 3 Bb5 g6} (10. Nbd2 Bf5 11. Nh4 Be6 12. Nxe4 dxe4 13. Rxe4 cxd4 14. cxd4 c5 15. Be3 Qd5 16. Qc2 cxd4 17. Rxd4 Qxe5 18. Nf3 Qb5 {½-½ (45) Fedoseev,V (2664)-Motylev,A (2653) Khanty-Mansiysk 2015}) 10... Rb8 11. Qc1 Qb6 12. b3 $1 {White has an edge.} cxd4 13. cxd4 Qa5 $146 ({Predecessor:} 13... f6 14. Nc3 Qb4 15. Nxe4 dxe4 16. Bd2 Qb6 17. Qc4+ Kh8 18. exf6 exf6 19. Rxe4 {1-0 (34) Tischbierek,R (2433)-Troyke,C (2326) Wunsiedel 2013}) 14. Nbd2 Bf5 15. Nxe4 Bxe4 16. Nd2 Bf5 17. Qb2 Rfc8 18. Rec1 Bf8 19. Rc3 Qa6 20. Nf3 Be4 {[#]} (20... e6 $11 {keeps the balance.}) 21. Ne1 $1 $16 h5 22. h3 Bf5 23. Rac1 f6 24. Qd2 Kh7 (24... Bg7 $16 {was worth a try.}) 25. f3 g5 (25... fxe5 $16 {was called for.} 26. dxe5 Bg7) 26. Nd3 Bg7 27. Nc5 Qa5 28. g4 Bg6 29. f4 gxf4 30. Bxf4 {Hoping for exf6.} Rg8 $2 (30... fxe5 31. Bxe5 Bxe5) 31. exf6 $18 exf6 {If Black can now play ...Rbe8 this consolidates a bit.} 32. Bxb8 Rxb8 33. Ne6 Bh6 34. g5 fxg5 $2 (34... Re8 35. gxh6 Rxe6) 35. Nxg5+ Kg8 (35... Bxg5 $142 36. Qxg5 Qb4) 36. Qf4 Rf8 {[#]} 37. Qd6 $1 {[%mdl 64] Double Attack} Qxa2 38. Qxg6+ {[%mdl 64] Double Attack} Bg7 39. Qh7# {Accuracy: White = 97%, Black = 27%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.6"]
[White "Keymer, Vincent"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "E06"]
[WhiteElo "2527"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,72,12,12,26,7,5,11,11,0,3,6,45,29,47,46,53,46,54,22,29,13,12,12,15,-12,-8,-55,-61,-68,-68,-68,-76,-65,-66,-70,-73,-100,-100,-100,-100,-250,-269,-356,-359,-358,-365,-351,-348,-513,-513,-513,-513,-513,-506,-496,-491]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. g3 O-O 6. Bg2 dxc4 7. Ne5 c5 8. dxc5 Qxd1+ 9. Nxd1 Bxc5 10. O-O Nc6 {E06: Closed Catalan: Early deviations} 11. Bxc6 bxc6 12. Be3 Bb6 {The position is equal.} 13. Bxb6 axb6 14. Nc3 {[#]} Bb7 $146 ({Predecessor:} 14... Bd7 15. Rfd1 Rfd8 16. Nxc4 b5 17. Ne5 Be8 18. Rxd8 Rxd8 {1-0 (64) Giri,A (2797)-Jakovenko,D (2719) Shenzhen 2019}) 15. a4 b5 16. axb5 cxb5 17. Nxb5 Rab8 18. Nc3 Bd5 19. Rfb1 Rfc8 20. f3 Bc6 21. g4 Be8 22. Ra5 Nd5 {[#] White must now prevent ...Nxc3.} 23. Nxd5 exd5 24. Rxd5 f6 $1 $36 {[%cal Rf6e5][%mdl 2048] Black has strong initiative.} 25. Nd7 Rb7 26. Rbd1 $1 ({Don't go for} 26. Nc5 $2 Rb5 $19) 26... Rxb2 {Strongly threatening ...c3.} 27. Rc5 Rxc5 28. Nxc5 Rxe2 $17 {[%mdl 4096] Endgame And now ...c3 would win. KRB-KRN} 29. Rd8 (29. Rc1 $17) 29... Kf7 $19 {Threatens to win with ...c3.} 30. Rc8 c3 31. Ne4 c2 32. Kf1 Rxh2 33. Kg1 (33. Rc7+ $142 Ke6 34. Nf2) 33... Re2 {Black is clearly winning.} 34. Kf1 {[#]} Bb5 $1 35. Nd6+ Kg6 {( -> ...Re8+)} 36. Nxb5 Rd2 {Accuracy: White = 41%, Black = 80%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.16"]
[Round "5.7"]
[White "L'Ami, Erwin"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "E25"]
[WhiteElo "2606"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,105,10,0,19,22,22,24,23,82,70,118,104,123,130,126,111,127,73,70,64,83,89,90,90,90,90,90,90,89,89,85,75,89,83,98,83,74,60,51,54,47,54,56,53,64,67,63,22,19,7,34,13,135,136,135,135,138,137,131,131,140,139,138,139,223,203,233,235,235,223,950,922,860,860,1559,1353,6404,5222,29986,29987,29987,29988,29988,29989,29989,29990,29990,29991,29992,29993]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 f5 9. Nh3 O-O 10. Nf4 {E25: Nimzo-Indian: Sämisch: 5...c5 6 f3 d5 7 cxd5} Nc6 (10... Nxc3 11. Qc2 Nd5 12. Nxd5 exd5 13. Bb2 Nc6 14. e3 Be6 15. Bb5 Na5 16. Rb1 Nc4 17. Bxc4 dxc4 {½-½ (17) Adhiban,B (2695)-Kunte,A (2469) Makati 2018}) 11. Nxd5 exd5 12. Bf4 {White has an edge.} Qf6 (12... Be6 $11) 13. Qd2 $16 Re8 14. Kf2 ({Much weaker is} 14. Qxd5+ $6 Be6 $11) 14... Be6 $146 ({Predecessor:} 14... Na5 15. Qxd5+ Be6 16. Qe5 Qxe5 17. Bxe5 Nb3 {½-½ (62) Rosenthal,J (2349)-Carron,J (2369) Switzerland 2012}) 15. e3 Rac8 16. Bb5 a6 17. Bxc6 ({Better is} 17. Be2) 17... Rxc6 18. Qd4 Qe7 19. Rab1 Rxc5 {[#]} 20. Rxb7 $1 {[%mdl 512]} Qxb7 21. Qxc5 Qb2+ 22. Kg3 Bf7 23. h4 h6 24. h5 Re6 25. Qc8+ Re8 26. Qxa6 Qxc3 27. a4 d4 28. exd4 Qxd4 29. a5 Qd5 30. Qb6 Re6 31. Qc7 {Black must now prevent a6.} Rc6 32. Qb8+ Kh7 33. Qa7 Qe6 34. Qe3 $36 {[%mdl 2048] aiming for Qxe6. White has the initiative.} Qa2 (34... g5 $11 35. hxg6+ Qxg6+ 36. Kf2 Rc2+ 37. Ke1 h5) 35. Qe5 Qe6 36. Qxe6 Rxe6 {[%mdl 4096] Endgame KRB-KRB} 37. Ra1 {Strongly threatening a6.} Ra6 38. Kh4 Bd5 39. Be3 Re6 40. Bd4 {Hoping for a6.} Re2 (40... g5+ $16 {is a better defense.} 41. hxg6+ Rxg6) 41. Kg3 Rd2 42. Be5 Re2 43. Bf4 Ra2 $2 (43... g5 44. hxg6+ Kxg6) 44. Rxa2 $18 Bxa2 {KB-KB} 45. a6 g5 46. Bd2 f4+ {[#]} 47. Bxf4 $1 {[%mdl 512]} gxf4+ 48. Kxf4 {KB-KP. White mates.} Bd5 49. Ke5 Ba8 50. Kf6 Bc6 51. a7 Ba8 52. Ke7 Kg7 53. f4 {Accuracy: White = 77%, Black = 38%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.1"]
[White "Smeets, Jan"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2585"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,137,20,20,14,12,25,20,7,18,8,23,7,0,7,7,0,14,0,8,8,8,8,7,8,0,-4,-4,-4,0,-8,0,-4,-4,-4,-4,-4,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,-20,-54,-56,-50,-59,-52,-64,-52,-52,-90,-104,-79,-10,-10,-10,-58,-10,-31,0,0,0,10,110,125,118,116,115,111,108,106,107,92,130,167,139,80,80,80,80,80,80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6 6. Re1 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} e6 7. c3 $146 (7. a4 b6 8. c3 Bb7 9. Qe2 Qc7 10. Na3 Be7 11. Bb1 e5 12. d4 cxd4 13. cxd4 exd4 14. Nxd4 {½-½ (42) Jakovenko,D (2719)-Ding,L (2809) Shenzhen 2019}) 7... b5 8. a4 Bb7 9. Bc2 c4 10. d4 cxd3 11. Qxd3 Nc5 12. Qe2 bxa4 13. Be3 Bxe4 14. Bxc5 Bxc2 15. Qxc2 {And now Bd4 would win.} dxc5 16. Qxa4+ Qd7 17. Rd1 Qxa4 18. Rxa4 Be7 19. Nbd2 Nd5 20. Nc4 f6 21. Rda1 Nc7 22. h4 O-O 23. Kf1 h5 24. Ke2 Rfd8 25. Ne1 Rab8 26. Nd3 Kf7 27. Kd2 Rd5 28. Kc2 g6 29. Ne3 Rd7 30. Rd1 {Threatens to win with Ne5+!} Kg7 31. Rc4 Nd5 32. Re1 Nb6 33. Re4 $1 e5 34. Nc4 Nxc4 35. Rxc4 Rbd8 36. Rd1 f5 37. f3 f4 (37... Rd6 $17) 38. b3 $11 Rd5 39. Ra4 R8d6 40. Raa1 Kh7 41. c4 Rd4 42. Nxe5 {aiming for Rxd4.} Bf6 (42... Rxd1 $11 {keeps the balance.} 43. Rxd1 Rxd1 44. Kxd1 Bxh4) 43. Rxd4 $16 Rxd4 {[%mdl 4096] Endgame KRB-KRN} 44. Re1 Bxh4 45. Re2 $1 g5 46. Nd3 g4 47. Nxc5 gxf3 48. gxf3 Bg3 49. Nxa6 (49. Re6 $142) 49... h4 50. c5 {Hoping for c6.} h3 51. c6 $1 {[%cal Rc6c7] White threatens c7 and mate.} Rd6 {[#]} 52. Nb4 ({And not} 52. Nb8 Rd8 $19) ({Better is} 52. c7 $1 $16 Rc6+ 53. Kb2) 52... Rd8 $1 $11 {The position is equal.} ({Avoid the trap} 52... h2 $2 {[#]} 53. Rxh2+ $1 {[%mdl 512]} Bxh2 54. c7 $18) 53. c7 Rc8 $1 {[%cal Rc8c7]} 54. Nd5 $1 h2 55. Rxh2+ $1 Bxh2 56. Kd3 Bg1 {...Bc5 is the strong threat.} 57. Kc4 {[#]} Bb6 $1 {[%mdl 512]} 58. Nxb6 Rxc7+ {KR-KN} 59. Kd4 Kg6 {[#]} 60. Nd5 $1 {[%mdl 512]} Rf7 61. Ke5 Kg5 62. b4 Rf8 63. b5 Re8+ 64. Kd6 Re3 65. Nxf4 Kxf4 66. b6 Rb3 67. Kc7 Kxf3 68. b7 Rxb7+ 69. Kxb7 {Accuracy: White = 73%, Black = 72%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.2"]
[White "Van Foreest, Lucas"]
[Black "Grandelius, Nils"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2523"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,20,25,-5,29,20,24,24,34,19,30,30,32,27,44,36,42,47,58,58,47,0,0,0,0,0,24,8,51,45,48,48,91,62,75,77,73,75,87,-310,-316,-300,60,-316,-304,-309,-317,-319,-312,-311,-316,-271,-298,-241,-307,-280,-135,-362,-366,-364,-363,-430,-422,-420,-412,-597,-582,-599,-588,-572,-570,-562,-549,-539,-527,-459,-421,-479,-479]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd2 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (6. Be2 {keeps more tension.} e5 7. Nb3 Be7 8. Qd3 Nc6 9. a3) (6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Nd5 Bxd5 10. exd5 Nbd7 11. Qd2 g6 12. O-O-O Bg7 13. Kb1 Qc7 14. Be2 O-O 15. g4 Rfc8 16. Rc1 hxg4 17. fxg4 {1-0 (55) Dominguez Perez,L (2758)-Giri,A (2769) Moscow 2019}) 6... Nc6 (6... e5 {looks sharper.} 7. Nb3 Be7 8. Be2 Be6 9. Be3 O-O) 7. Nxc6 bxc6 8. Bd3 {White has an edge.} g6 9. O-O $146 ({Predecessor:} 9. Qe2 Bg7 10. O-O O-O 11. Rab1 e5 12. Kh1 Re8 13. f4 d5 14. Qf2 dxe4 15. Nxe4 {½-½ (65) Hruska,K (1704)-Cisko,M (1615) Slovakia 2015}) 9... Bg7 10. Qe1 O-O 11. Rd1 e5 12. Na4 Be6 13. c4 Nh5 14. Be2 Nf4 15. Bxf4 exf4 16. c5 Qg5 17. cxd6 Be5 18. Bf3 Bc4 19. Nb6 Bxf1 20. Kxf1 Rad8 21. Nc4 Rfe8 22. Qa5 {h4 is the strong threat.} Re6 {[#]} 23. Bg4 $1 {[%mdl 512]} f3 (23... Qxg4 24. Qxd8+) 24. Bxe6 $4 {[%mdl 8192]} (24. gxf3 $16 {keeps the pressure on.} Rdxd6 25. Rxd6 Rxd6 26. Qxe5 Qxe5 27. Nxe5) 24... Qxg2+ $19 {[%mdl 64] Double Attack} 25. Ke1 Qg1+ 26. Kd2 Rxd6+ $1 {[%mdl 64] Double Attack} 27. Bd5 Qxf2+ ({Less strong is} 27... Bf4+ 28. Kc2 $19) 28. Kc1 Bf4+ 29. Kb1 {[#]} Rd7 $1 {[%mdl 64] Pin} 30. Bxf7+ Rxf7 31. Qc3 {[#] intending Rd8+.} Bc7 $1 32. e5 Qh4 $40 {[%mdl 128] Black is out for blood.} ({Not} 32... Qxh2 33. e6 $11) (32... Qc5 $19 {White must now prevent ...f2.} 33. Rf1 f2) 33. Qd3 $2 (33. Nd6 $17 Bxd6 34. exd6) 33... f2 34. Rf1 Qxh2 35. Nd6 Bxd6 36. exd6 {[%mdl 4096] Endgame Hoping for d7. KQR-KQR} Qg2 37. Kc2 (37. b3 $142 h5 38. Kc2) 37... Qd5 {Black is clearly winning.} 38. Qxd5 cxd5 {KR-KR} 39. d7 Rxd7 {Strongly threatening ...Rf7.} 40. Rxf2 h5 41. b4 h4 42. Kd3 Rf7 43. Rh2 Rf4 {Accuracy: White = 62%, Black = 65%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.3"]
[White "Mamedov, Rauf"]
[Black "Smirnov, Anton"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2659"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,98,-10,0,-24,-32,-41,-19,-75,-14,-21,-33,-114,-47,-61,-43,-61,-52,-79,-26,-31,-26,-38,-39,-44,9,0,42,-37,-1,-48,-4,-33,-25,-25,-25,-25,-25,-30,73,18,43,18,12,11,57,11,11,8,8,15,52,41,54,51,42,0,0,0,0,0,0,0,0,0,169,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,113,0,0]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 c4 7. Nbd2 Na5 8. g3 Bd7 9. Bg2 Be7 10. O-O {C02: French: Advance Variation} g5 (10... Nh6 11. Re1 Nf5 12. Rb1 Rc8 13. Qc2 O-O 14. Nf1 Qb3 15. Qe2 Ba4 16. g4 Nh4 17. Nxh4 Bxh4 {0-1 (49) Delgado Ramirez,N (2619)-Kovalenko,I (2646) Batumi 2018}) 11. Qe2 $146 ({Predecessor:} 11. Re1 g4 12. Nh4 h5 13. Rb1 Nh6 14. Nf1 O-O-O 15. Bf4 Rdg8 16. Qd2 Nb3 17. Qe3 Bxh4 18. Bxh6 {1-0 (58) Krapivin,V (2318)-Yakimenko,A (2182) Sochi 2017}) 11... h5 12. Ne1 (12. Rb1 $11) 12... g4 (12... O-O-O $17) 13. Nc2 O-O-O 14. Ne3 (14. Rb1 $15) 14... Ba4 (14... f5 $17) 15. Re1 Kb8 16. Rb1 Nh6 17. b4 Nb3 (17... cxb3 $17 18. c4 dxc4 19. Nexc4 Nxc4 20. Nxc4 Qb5) 18. Nxb3 $11 Bxb3 19. Nf1 Rdg8 20. Bf4 Bg5 (20... h4 $15) 21. Bxg5 Rxg5 22. Qd2 (22. Nd2 $14) 22... Rhg8 23. Ne3 Nf5 24. Rbc1 Qd8 25. Nxf5 Rxf5 26. h4 gxh3 27. Bxh3 Qg5 {[#]} (27... Rfg5 $11 {keeps the balance.}) 28. Qxg5 (28. Qe3 $1 $16) 28... Rfxg5 29. Kh2 Kc7 30. Re3 Ba4 31. f4 (31. Rf3 $5 {[%cal Rf3f7]} R5g7 32. Rf4 $14) 31... R5g7 32. f5 Bd7 33. Rf1 Kc6 34. a4 Kc7 35. fxe6 Bxe6 36. Rf6 h4 $1 {[%cal Rh4g3]} 37. gxh4 Bxh3 38. Kxh3 {[%mdl 4096] Endgame KRR-KRR} Rg1 {[%cal Rg1h1] [#]} 39. Rxf7+ Kd8 {[%cal Rg1h1]} 40. Rf2 {Strongly threatening Kh2.} Rh1+ 41. Rh2 Rhg1 $1 42. Rf3 Ke7 43. Re3 Ke6 44. Rf3 Ke7 45. e6 b6 46. b5 R8g6 47. Re3 Rg7 48. Rf2 {Hoping for Rf7+.} Rh1+ 49. Rh2 Rhg1 $1 {Accuracy: White = 43%, Black = 61%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.4"]
[White "Warmerdam, Max"]
[Black "Eljanov, Pavel"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2498"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,44,14,12,0,0,0,34,0,2,17,46,33,35,17,29,0,0,0,0,0,35,37,42,0,58,18,29,-279,-275,-266,-263,-367,-282,-408,-216]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. c4 e6 6. Nc3 Ne7 7. Nge2 {B12: Caro-Kann: Advance Variation} Nd7 (7... Bg4 8. Bg5 Qb6 9. c5 Qc7 10. f3 Bf5 11. Ng3 f6 12. Bf4 Nd7 13. exf6 Qxf4 14. Nce2 Qh6 15. fxe7 Bxe7 16. Nxf5 exf5 {½-½ (27) Sutovsky,E (2647)-Artemiev,V (2704) Poikovsky 2018}) 8. Ng3 Bg4 9. Be2 {White is slightly better.} Bxe2 10. Qxe2 g6 $146 ({Predecessor:} 10... Ng6 11. O-O Nxh4 12. cxd5 cxd5 13. Nxd5 exd5 14. e6 fxe6 15. Qxe6+ Qe7 16. Qxd5 Nb6 17. Qb5+ Qd7 18. Qe5+ Qe7 19. Qb5+ Qd7 20. Qe5+ Qe7 21. Qb5+ Qd7 {½-½ (21) Malureanu,C (2165)-Nikologorskiy,K (2308) Albena 2011}) 11. Bg5 Bh6 12. cxd5 cxd5 13. f4 Bxg5 14. fxg5 Qb6 15. Rd1 a6 16. O-O Rc8 17. Qf3 Nf5 (17... O-O $11) 18. Kh2 Rc4 {White must now prevent ...Nxe5!} 19. Nce2 $2 {[%mdl 8192] [#]} (19. Nxf5 $11 {and White has nothing to worry.} gxf5 20. Qf2) 19... Nxe5 $1 $19 {[%mdl 512]} 20. Qf4 (20. dxe5 Rxh4#) 20... Ng4+ 21. Kh1 Nxg3+ 22. Nxg3 (22. Qxg3 $142 O-O 23. Rd2) 22... Qc7 {Accuracy: White = 24%, Black = 38%.} (22... O-O $142 23. Qd2 Qc7) 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.5"]
[White "Saduakassova, Dinara"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "E08"]
[WhiteElo "2519"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "160"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 4. g3 {[%emt 0:00:11]} Bb4+ {[%emt 0:00:00]} 5. Bd2 {[%emt 0:00:04]} Be7 {[%emt 0:00:00]} 6. Bg2 {[%emt 0:00:03]} O-O {[%emt 0:00:00]} 7. O-O {[%emt 0:00:03]} c6 {[%emt 0:00:00]} 8. Qc2 {[%emt 0:00:26]} Nbd7 {[%emt 0:00:07]} 9. Bf4 {[%emt 0:00:05]} b6 {[%emt 0:00:13]} 10. Rd1 {[%emt 0:00:56]} Bb7 {[%emt 0:00:33]} 11. Ne5 {[%emt 0:01:54]} Nh5 {[%emt 0:00:22]} 12. Bc1 {[%emt 0:00:57]} Nhf6 {[%emt 0:06:11]} 13. Bf4 {[%emt 0:05:45]} Nh5 {[%emt 0:00:18]} 14. Bd2 {[%emt 0:06:43]} Nhf6 {[%emt 0:00:14]} 15. cxd5 {[%emt 0:00:13]} cxd5 {[%emt 0:00:09]} 16. Nc6 {[%emt 0:01:29]} Bxc6 {[%emt 0:00:04]} 17. Qxc6 {[%emt 0:00:05]} Rc8 {[%emt 0:00:03]} 18. Qb5 {[%emt 0:01:17]} Ne8 {[%emt 0:00:05]} 19. Qd3 {[%emt 0:07:12]} Nd6 {[%emt 0:00:13]} 20. Bc3 {[%emt 0:04:27]} f5 {[%emt 0:10:32]} 21. Nd2 {[%emt 0:01:32]} Ne4 {[%emt 0:03:38]} 22. Rac1 {[%emt 0:05:50]} Ndf6 {[%emt 0:09:54]} 23. f3 {[%emt 0:15:57]} Nd6 {[%emt 0:05:10]} 24. e4 {[%emt 0:10:08]} fxe4 {[%emt 0:09:44]} 25. fxe4 {[%emt 0:00:05]} Nfxe4 {[%emt 0:03:14]} 26. Nxe4 {[%emt 0:00:06]} Nxe4 {[%emt 0:00:04]} 27. Bxe4 {[%emt 0:00:03]} dxe4 {[%emt 0:00:04]} 28. Qxe4 {[%emt 0:00:04]} Qd5 {[%emt 0:00:12]} 29. Re1 {[%emt 0:00:11]} Bf6 {[%emt 0:01:47]} 30. Kg2 {[%emt 0:03:59]} Rc4 {[%emt 0:11:51]} 31. Rcd1 {[%emt 0:03:15]} Qxe4+ {[%emt 0:06:42]} 32. Rxe4 {[%emt 0:00:05]} e5 {[%emt 0:00:12]} 33. g4 {[%emt 0:25:38]} exd4 {[%emt 0:10:27]} 34. g5 {[%emt 0:01:30]} Bxg5 {[%emt 0:02:37]} 35. Rexd4 {[%emt 0:00:24]} Rxd4 {[%emt 0:01:09]} 36. Rxd4 {[%emt 0:00:05]} Bf6 {[%emt 0:01:10]} 37. Rc4 {[%emt 0:03:48]} Bxc3 {[%emt 0:04:06]} 38. Rxc3 {[%emt 0:00:04]} Rd8 {[%emt 0:00:50]} 39. Kf3 {[%emt 0:11:52]} Rd7 {[%emt 0:07:34]} 40. Rc6 {[%emt 0:00:00]} h6 {[%emt 0:00:00]} 41. Ke3 {[%emt 0:04:42]} Kh7 {[%emt 0:08:12]} 42. b3 {[%emt 0:04:36]} Re7+ {[%emt 0:09:14]} 43. Kf3 {[%emt 0:00:22]} Rf7+ {[%emt 0:00:24]} 44. Ke3 {[%emt 0:07:43]} h5 {[%emt 0:05:55]} 45. h4 {[%emt 0:04:15]} Re7+ {[%emt 0:14:25]} 46. Kf3 {[%emt 0:02:32]} Rd7 {[%emt 0:00:20]} 47. Ke3 {[%emt 0:02:34]} Rf7 {[%emt 0:01:21]} 48. Rc2 {[%emt 0:11:31]} Kh6 {[%emt 0:00:46]} 49. Rc6+ {[%emt 0:01:43]} g6 {[%emt 0:06:40]} 50. Rc8 {[%emt 0:01:02]} Rf1 {[%emt 0:05:19]} 51. Rh8+ {[%emt 0:00:45]} Kg7 {[%emt 0:00:04]} 52. Ra8 {[%emt 0:00:15]} Rf7 {[%emt 0:00:42]} 53. Rc8 {[%emt 0:01:21]} Rd7 {[%emt 0:03:22]} 54. Rc6 {[%emt 0:04:20]} Kh6 {[%emt 0:01:11]} 55. Rc8 {[%emt 0:00:12]} Rd1 {[%emt 0:03:44]} 56. Rh8+ {[%emt 0:00:05]} Kg7 {[%emt 0:00:05]} 57. Ra8 {[%emt 0:00:04]} a5 {[%emt 0:02:30]} 58. Rb8 {[%emt 0:01:03]} Rh1 {[%emt 0:01:55]} 59. Rxb6 {[%emt 0:02:01]} Rh3+ {[%emt 0:00:32]} 60. Kf2 {[%emt 0:00:00]} Rxh4 {[%emt 0:00:00]} 61. a4 {[%emt 0:05:01]} Rh3 {[%emt 0:01:26]} 62. Rb5 {[%emt 0:03:10]} Kh6 {[%emt 0:11:07]} 63. Kg2 {[%emt 0:02:13]} Rc3 {[%emt 0:00:19]} 64. b4 {[%emt 0:01:07]} Rc4 {[%emt 0:01:26]} 65. bxa5 {[%emt 0:07:34]} Rxa4 {[%emt 0:00:05]} 66. Kg3 {[%emt 0:00:12]} h4+ {[%emt 0:02:28]} 67. Kh3 {[%emt 0:01:12]} g5 {[%emt 0:00:47]} 68. Rb8 {[%emt 0:02:00]} Rxa5 {[%emt 0:00:19]} 69. Rh8+ {[%emt 0:00:04]} Kg7 {[%emt 0:00:10]} 70. Rb8 {[%emt 0:00:09]} Ra4 {[%emt 0:06:09]} 71. Rc8 {[%emt 0:00:16]} Kf7 {[%emt 0:00:55]} 72. Rb8 {[%emt 0:00:20]} Ke7 {[%emt 0:00:34]} 73. Rb6 {[%emt 0:00:29]} Ra3+ {[%emt 0:01:22]} 74. Kh2 {[%emt 0:00:17]} Kf7 {[%emt 0:00:21]} 75. Rc6 {[%emt 0:00:09]} Rf3 {[%emt 0:00:24]} 76. Rh6 {[%emt 0:00:59]} Kg7 {[%emt 0:00:21]} 77. Rh5 {[%emt 0:00:11]} Kg6 {[%emt 0:00:10]} 78. Rh8 {[%emt 0:00:03]} Kf5 {[%emt 0:00:15]} 79. Rb8 {[%emt 0:00:06]} Kg4 {[%emt 0:00:20]} 80. Rb4+ {[%emt 0:00:05]} Rf4 {[%emt 0:00:16]} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.6"]
[White "Abdusattorov, Nodirbek"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2635"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,109,16,14,10,20,16,16,16,16,10,14,15,15,14,13,10,19,19,19,13,20,12,17,12,14,11,15,7,10,3,3,4,7,8,13,14,18,8,10,7,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,8,8,8]} 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 Bb7 9. d3 d6 10. Nbd2 Nd7 11. c3 Nc5 12. axb5 axb5 13. Rxa8 Qxa8 {The position is equal.} 14. Bc2 {C88: Closed Ruy Lopez: Anti-Marshall Systems} b4 15. Nc4 bxc3 16. bxc3 Qa1 {[#]} 17. Be3 $146 ({Predecessor:} 17. Qd2 Na5 18. Nxa5 Qxa5 19. d4 Nd7 20. h3 Bf6 21. Bb3 Re8 {½-½ (32) Jones,G (2688)-Nihal,S (2610) Douglas 2019}) 17... Qxd1 18. Rxd1 Nd7 19. Rb1 Rb8 20. Nfd2 Bc8 21. Rxb8 Ndxb8 22. f4 exf4 23. Bxf4 f5 24. exf5 Bxf5 25. Ne3 Bg6 26. Nf3 Nd7 27. Nd5 Bd8 $1 28. Bg5 Nf6 29. Bxf6 Bxf6 30. Nxf6+ gxf6 $11 {[%mdl 4096] Endgame KBN-KBN} 31. Nh4 Kg7 32. Kf2 Ne7 33. Nxg6 hxg6 {KB-KN} 34. Bb3 f5 35. h4 Kf6 36. g3 Nc6 37. d4 Ne7 38. Kf3 Nc8 39. Bd5 Ne7 40. Bb7 Kg7 41. Kf4 Kf6 42. c4 c5 43. dxc5 dxc5 44. Bf3 Nc8 45. g4 fxg4 46. Kxg4 (46. Bxg4 {is more complex.} Nd6 47. Be2 Nf5 48. Ke4 Ng3+ 49. Kf3) 46... Nd6 47. Be2 Nf7 48. Kf4 g5+ 49. hxg5+ Nxg5 50. Bh5 Ne6+ 51. Ke4 Nc7 52. Bg4 Na8 53. Kd5 {[#] And now Kc6 would win.} Nb6+ 54. Kxc5 Nxc4 55. Kxc4 {Accuracy: White = 81%, Black = 91%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.17"]
[Round "6.7"]
[White "Anton Guijarro, David"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2694"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,79,0,0,0,0,-4,0,2,19,16,14,25,11,0,36,27,38,0,9,-8,36,33,45,13,10,6,14,1,80,0,0,0,0,0,6,10,19,11,49,0,61,37,122,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qc2 c5 6. O-O Nc6 7. Na3 Be7 8. Nxc4 O-O 9. Nce5 {A14: English Opening: 1...e6 with b3 by White} Nxe5 $146 ({Predecessor:} 9... Bd7 10. d3 Rc8 11. Bg5 h6 12. Bxf6 Bxf6 13. Nxd7 Qxd7 14. Qxc5 Nd4 15. Qxa7 Ra8 16. Qb6 Ra6 {0-1 (51) Pena Gomez,M (2467)-Postny,E (2647) Barbera del Valles 2009}) 10. Nxe5 Nd5 11. a3 b6 12. Nc6 Qe8 13. Nxe7+ Qxe7 14. b4 Ba6 15. d3 Rfc8 16. Qd2 c4 17. dxc4 Bxc4 18. Bb2 b5 19. Qd4 {[%csl Gb2][%cal Rd4g7] [#]} f6 20. Rfe1 Rd8 21. Qh4 {aiming for e4.} Qf7 (21... e5 $1 $11 {remains equal.}) 22. Be4 (22. e4 $16 Ne7 23. e5) 22... h6 $11 23. Rad1 Rac8 24. Bb1 e5 25. Qe4 Nb6 26. f4 exf4 27. Bd4 ({Of course not} 27. gxf4 Qh5 $11) 27... Na4 (27... Qh5 $1 $11) 28. gxf4 Ba2 (28... Qh5 $14) 29. Bxa2 ({White should play} 29. Qh7+ $16 Kf8 30. Bg6) 29... Qxa2 {The position is equal.} 30. Bxf6 gxf6 (30... Rxd1 $6 31. Rxd1 Qf7 32. Bd4 $16) 31. Qg6+ {[%mdl 64] [#] Double Attack} Kf8 {...Qg8 is the strong threat.} 32. Qxf6+ {[%mdl 64] Double Attack} Ke8 33. Rd3 {Intending Re3+ and mate.} Qf7 $1 {[%cal Rf7f6]} 34. Qh8+ Ke7 $1 35. Qe5+ Kf8 36. Rg3 Nb6 $1 37. Qh8+ Ke7 38. Qe5+ ({Reject} 38. Re3+ Kd7 $17) 38... Kf8 39. Qh8+ Ke7 40. Qe5+ {Accuracy: White = 50%, Black = 49%.} ({Much worse is} 40. Re3+ Kd7 $17) 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.1"]
[White "Nihal Sarin"]
[Black "Saduakassova, Dinara"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2618"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,93,25,19,45,37,36,41,47,46,47,35,45,26,33,8,23,24,33,28,30,25,37,20,77,70,82,71,96,52,83,82,68,66,67,56,56,56,65,58,70,64,91,53,62,55,92,94,132,124,179,180,252,213,333,321,310,274,266,268,468,262,1153,1213,1277,1104,6412,6821,5193,4322,7305,6580,6509,6404,5179,5114]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 c5 7. a3 Bxc3 8. Bxc3 Ne4 9. Rc1 Nxc3 10. Rxc3 cxd4 11. Nxd4 Nc6 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5} 12. cxd5 Qxd5 13. Nxc6 bxc6 {White is slightly better.} 14. Qc2 h6 $146 ({Predecessor:} 14... Rb8 15. b4 Qg5 16. Rc5 Qf6 17. Qc1 Qg6 18. f3 Rd8 19. Kf2 {1-0 (47) Bluebaum,M (2610)-Raja,H (2432) Karlsruhe 2019}) 15. f3 a5 16. Bc4 Qe5 17. f4 Qf6 18. O-O $36 {[%mdl 2048] White is pushing.} Ba6 19. Rf2 Rfd8 20. h3 Rd6 21. Ba2 Rc8 {[#]} (21... Rb8 $11) 22. f5 $1 $16 {[%cal Rf5e6]} exf5 23. Qxf5 {Threatens to win with Qg4.} Rc7 24. Qxf6 (24. Rc5 {keeps more tension.} Qe7 25. Re5 Qf8 26. Qxf7+ Rxf7 27. Rxf7 Qxf7 28. Re8+) 24... Rxf6 25. Rxf6 gxf6 {[%mdl 4096] Endgame KRB-KRB} 26. Kf2 Kg7 27. Bb1 c5 28. Be4 Rc8 29. Kf3 Bb5 30. g4 Bd7 31. Kf4 Be6 32. Bf5 Bxf5 33. Kxf5 $14 {KR-KR} Rb8 34. b3 Re8 {[#]} (34... h5 $16 35. gxh5 Rh8) 35. Kf4 $1 $18 (35. Rxc5 $6 Rxe3 36. Rxa5 Rf3+ 37. Ke4 Rxb3 $14) 35... Rb8 (35... Re5 {was worth a try.} 36. Rc4 Rd5) 36. h4 Kg6 (36... h5 $142 37. gxh5 Kh6 38. Rxc5 Rxb3) 37. h5+ (37. Rxc5 $6 Rxb3 38. Rxa5 Rb1 $18) 37... Kg7 38. Ke4 Rb7 39. Kd5 ({Don't do} 39. Rxc5 Rxb3 40. Rxa5 Rb1 $18) 39... Re7 $2 (39... f5 40. gxf5 Kf6) 40. Kxc5 (40. Rxc5 $142 Rxe3 41. b4) 40... Re4 $2 (40... Rc7+ 41. Kd4 Rb7) 41. b4 {White is clearly winning.} axb4 42. axb4 {[%cal Ba3b4,Bb4b5][%mdl 32]} Re5+ 43. Kc6 Re6+ 44. Kb7 f5 45. gxf5 Re5 46. Kc6 Rxf5 47. b5 {Accuracy: White = 69%, Black = 49%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.2"]
[White "L'Ami, Erwin"]
[Black "Smeets, Jan"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2606"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,97,31,27,30,28,20,23,18,18,20,20,17,22,20,20,20,20,20,18,16,23,18,35,32,26,28,32,27,32,39,54,31,26,15,12,14,65,49,92,64,72,79,91,79,79,6,8,0,0,0,0,0,0,0,0,0,0,0,17,57,81,73,73,73,71,69,80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Nxg6 hxg6 8. g3 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} (8. Bd3 Nbd7 9. h3 Bd6 10. O-O dxc4 11. Bxc4 O-O 12. Qc2 c5 13. dxc5 Nxc5 14. Rd1 Qe7 15. Bd2 a6 16. Be2 {½-½ (32) Cheparinov,I (2687)-Artemiev,V (2731) Moscow 2019}) 8... Nbd7 9. Qb3 Qc7 10. Bg2 {White has an edge.} Be7 11. O-O O-O 12. cxd5 cxd5 13. Bd2 Nb6 14. Rfc1 Qd7 $146 ({Predecessor:} 14... Nc4 15. Be1 Qd7 {½-½ (45) Cvek,R (2516)-Cech,P (2387) Czechia 2014}) 15. Be1 Rfc8 16. Ne2 Nc4 17. Nf4 Rc6 18. Nd3 Rac8 19. Qd1 Qd8 20. a4 Ne4 21. b3 Na5 22. Rxc6 Nxc6 23. Rc1 a5 24. Rc2 Nb4 ({Better is} 24... Nf6 $11) 25. Bxb4 $14 Bxb4 26. Bxe4 dxe4 27. Ne5 Bd6 28. Nc4 f5 29. Nxd6 (29. Kg2 $16) 29... Rxc2 $11 30. Qxc2 Qxd6 $16 {[%mdl 4096] Endgame KQ-KQ} 31. Qc8+ Kh7 $1 32. Qxb7 Qa3 33. Qb5 Qc1+ 34. Kg2 Qd2 35. h4 Qe1 36. d5 e5 37. d6 f4 38. exf4 ({Don't play} 38. Qxe5 fxe3 39. fxe3 Qe2+ 40. Kg1 Qd1+ 41. Kg2 Qf3+ 42. Kh2 Qf2+ 43. Kh3 Qf1+ 44. Kg4 Qd1+ 45. Kg5 Qh5+ 46. Kf4 Qf3+ 47. Kg5 Qxe3+ 48. Kg4 Qf3+ 49. Kh3 Qh1+ 50. Kg4 Qf3+ 51. Kh3 e3 $11) 38... exf4 39. gxf4 {[#] aiming for f5.} Qd1 40. Qg5 ({White should play} 40. Qxa5 $16 {Black must now prevent Qc3.} Qf3+ 41. Kg1) 40... Qf3+ $1 $11 {The position is equal.} 41. Kg1 {Strongly threatening h5.} e3 42. fxe3 Qxe3+ 43. Kh2 {Hoping for h5.} Qd2+ 44. Kh3 {Threatens to win with h5.} (44. Kg1 {is more complex.} Qe3+) 44... Qxd6 45. Qg3 Qe6+ 46. Kh2 Qe2+ 47. Kg1 Qd1+ 48. Kh2 Qc2+ 49. Kg1 {Accuracy: White = 70%, Black = 73%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.3"]
[White "Keymer, Vincent"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2527"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,64,16,38,22,29,29,30,19,35,19,23,9,20,21,47,43,78,95,81,104,81,62,66,94,110,110,95,82,100,65,100,106,112,56,103,77,113,109,121,113,116,72,55,51,54,23,6,2,20,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Bd6 5. Bd3 Nf6 6. O-O {D30: Queen's Gambit Declined: Systems without Nc3} O-O 7. Nbd2 c5 8. dxc5 {White has an edge.} Bxc5 9. b3 (9. a3 a5 10. Qc2 dxc4 11. Nxc4 Nbd7 12. e4 b5 13. Ncd2 Bb7 14. Bxb5 {0-1 (78) Kozul,Z (2611)-Martinovic,S (2594) Pozega 2018}) 9... b6 10. Bb2 Bb7 11. Qc2 Nc6 $146 ({Predecessor:} 11... h6 12. Rfd1 Nc6 13. a3 Rc8 {½-½ (50) Soto Martin,M (1524)-Perez Alvarez,J (1818) Madrid 2013}) 12. a3 $36 {[%mdl 2048] White has good play.} d4 13. Ne4 Nxe4 14. Bxe4 {[#] Threatens to win with exd4.} dxe3 15. b4 exf2+ 16. Kh1 Be7 17. Rad1 ({Don't play} 17. Qxf2 f5 $15) 17... Qc7 18. Bxh7+ Kh8 19. Bd3 f5 20. Qxf2 Bf6 21. Rfe1 (21. c5 $16) 21... Rae8 22. b5 Na5 23. Ne5 {Strongly threatening Ng6+.} Kg8 24. Ng6 Nxc4 25. Bxc4 ({Don't take} 25. Nxf8 Nxb2 26. Nxe6 Rxe6 $14) 25... Qxc4 26. Nxf8 Rxf8 27. Bxf6 Rxf6 28. Rd7 {The position is equal.} Qc8 $1 {[%cal Rc8d7]} 29. Qd4 {[#] aiming for Rd8+.} Bd5 $1 30. Rxd5 ({Don't blunder} 30. Rxa7 $2 Qc2 $19) 30... exd5 31. Qxd5+ Kh7 32. Qf3 Qc5 {Accuracy: White = 81%, Black = 63%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.4"]
[White "Eljanov, Pavel"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2650"]
[BlackElo "2523"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,65,20,18,22,14,14,19,14,16,0,0,4,21,7,6,18,0,0,50,45,53,58,56,34,54,30,44,15,87,94,87,52,87,88,88,48,48,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Be4 11. Qc1 Nc6 12. Be3 Rc8 13. Rd1 {E05: Open Catalan: 5 Nf3 Be7.} Nd5 14. Nbd2 {[%cal Bb1d2,Bd2e4,Be4c3][%mdl 32]} Nxe3 15. fxe3 Bxf3 $1 16. exf3 Na5 17. Ne4 f5 {[#]} 18. Nc3 $146 ({Predecessor:} 18. Nc5 Bxc5 19. dxc5 Qf6 20. b4 Nc4 21. Bf1 Rfd8 22. Bxc4 Rxd1+ 23. Qxd1 {½-½ (23) De Blois Figueredo,A (2364)-Fajs,B (2449) ICCF email 2010}) 18... Qd6 19. e4 c5 20. e5 $36 {[%mdl 2048] White has some pressure.} Qxd4+ 21. Rxd4 cxd4 22. Qe1 dxc3 23. bxc3 Rc7 24. Bf1 Rfc8 25. Rc1 Kf7 (25... Nc4 $11 {remains equal.}) 26. g4 $16 g6 27. Kh1 Nc4 28. gxf5 gxf5 29. Bxc4 Rxc4 30. Qe3 (30. Qg3 $5 {[%cal Rc1g1]} h6 31. f4 $16 (31. Rg1 Bg5 $11)) 30... b4 $1 {[%cal Rc4c3] The position is equal.} 31. Qh6 Rh4 32. Qd2 Rhc4 $1 {[%cal Rb4c3]} 33. Qh6 $1 {Accuracy: White = 76%, Black = 81%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.5"]
[White "Grandelius, Nils"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2673"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,104,0,0,0,0,0,5,4,0,0,0,3,0,14,2,2,2,2,2,2,0,2,7,8,0,0,0,0,0,33,0,0,0,0,0,6,0,4,0,66,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,-8,-8,-8,-8,-8,-8,-8,-8,0,0,8,8,8,8,8,8,8,-8,-8,-8,-8,-8,-8]} 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Be4 11. Qc1 c6 {E05: Open Catalan: 5 Nf3 Be7} 12. a4 $146 (12. Rd1 Nbd7 13. Nc3 Bg6 14. a3 Rc8 15. b4 Nd5 16. Be1 Qc7 17. e3 h6 18. Qb2 N5b6 19. Qe2 {½-½ (31) Yu,Y (2751)-Giri,A (2797) Shenzhen 2019}) 12... Nbd7 13. Nc3 Bg6 14. Nh4 Bh5 15. h3 Nd5 16. axb5 axb5 17. Nxd5 cxd5 18. Bf3 Bxf3 19. Nxf3 Qb6 20. Qc2 Nf6 21. Bg5 h6 22. Bxf6 Bxf6 23. Rxa8 Rxa8 24. e3 Ra4 25. b3 Ra8 26. Rc1 b4 27. Kg2 Qa6 28. h4 g6 29. Ne1 (29. Qc5 {keeps more tension.} Qa3 30. Qc6 Kg7 31. Rc5 Ra7 32. Qb6) 29... Qa2 (29... h5 $11) 30. Qxa2 ({Better is} 30. Qc6 $1 $14) 30... Rxa2 $14 {[%mdl 4096] Endgame KRB-KRN. The position is equal.} 31. Rc8+ Kg7 32. Rb8 Be7 33. Nd3 Ra3 34. Nxb4 {Threatens to win with Nc6.} Rxb3 35. Nc6 Rxb8 36. Nxb8 $11 {KB-KN} Bd6 37. Nd7 f6 38. Nb6 Kf7 39. Kf3 h5 40. Na4 g5 41. hxg5 fxg5 42. g4 h4 43. Kg2 e5 44. dxe5 Bxe5 45. Nc5 d4 46. exd4 Bxd4 47. Nd3 Kf6 48. f4 gxf4 49. Nxf4 Be5 50. Kh3 Bxf4 51. Kxh4 Kg6 52. g5 Bxg5+ {Accuracy: White = 81%, Black = 70%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.6"]
[White "Smirnov, Anton"]
[Black "Warmerdam, Max"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2604"]
[BlackElo "2498"]
[Annotator "ChessBase"]
[PlyCount "65"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 5. Qa4+ {[%emt 0:06:40]} Nc6 {[%emt 0:00:00]} 6. e3 {[%emt 0:00:55]} O-O {[%emt 0:00:21]} 7. a3 {[%emt 0:01:55]} Bxc3+ {[%emt 0:01:48]} 8. bxc3 {[%emt 0:00:18]} Ne4 {[%emt 0:06:33]} 9. Qc2 {[%emt 0:11:40]} b6 {[%emt 0:00:35]} 10. Bd3 {[%emt 0:04:43]} Ba6 {[%emt 0:00:22]} 11. cxd5 {[%emt 0:01:36]} Bxd3 {[%emt 0:00:47]} 12. Qxd3 {[%emt 0:00:02]} exd5 {[%emt 0:00:10]} 13. Nd2 {[%emt 0:04:33]} Nxd2 {[%emt 0:04:14]} 14. Bxd2 {[%emt 0:00:03]} Na5 {[%emt 0:00:21]} 15. O-O {[%emt 0:00:32]} Nc4 {[%emt 0:11:34]} 16. e4 {[%emt 0:16:22]} Nxd2 {[%emt 0:01:31]} 17. Qxd2 {[%emt 0:00:03]} dxe4 {[%emt 0:00:06]} 18. Qf4 {[%emt 0:00:27]} Qe7 {[%emt 0:14:39]} 19. Rfe1 {[%emt 0:01:38]} Rae8 {[%emt 0:09:15]} 20. f3 {[%emt 0:01:30]} f5 {[%emt 0:02:38]} 21. fxe4 {[%emt 0:01:19]} fxe4 {[%emt 0:00:07]} 22. Qe3 {[%emt 0:00:09]} Rf5 {[%emt 0:03:09]} 23. Re2 {[%emt 0:03:48]} h6 {[%emt 0:20:05]} 24. c4 {[%emt 0:09:21]} Qf6 {[%emt 0:07:08]} 25. Rae1 {[%emt 0:02:37]} Rf8 {[%emt 0:01:16]} 26. h3 {[%emt 0:00:28]} Rf4 {[%emt 0:01:11]} 27. d5 {[%emt 0:03:46]} Qe5 {[%emt 0:04:14]} 28. Rd2 {[%emt 0:07:33]} Kh8 {[%emt 0:01:40]} 29. Rde2 {[%emt 0:03:21]} R8f6 {[%emt 0:01:28]} 30. Rd2 {[%emt 0:01:38]} R6f5 {[%emt 0:07:49]} 31. Rd4 {[%emt 0:08:31]} Rf3 {[%emt 0:02:36]} 32. Qxe4 {[%emt 0:00:22]} Qg3 {[%emt 0:00:22]} 33. Qh4 {[%emt 0:00:12]} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.18"]
[Round "7.7"]
[White "Ganguly, Surya Shekhar"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "B78"]
[WhiteElo "2636"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,81,0,26,21,54,37,184,102,95,81,202,122,100,61,74,73,83,-57,-64,-51,-47,-244,-260,-254,-228,-393,-373,-336,-95,-102,-112,-106,-112,-1210,-22,-2244,-20,-12,-17,-96,-64,-142,-134,-108,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Bc4 O-O 8. Bb3 d6 9. f3 Bd7 10. h4 h5 11. Qd2 Rc8 12. O-O-O Ne5 13. Bg5 Rc5 14. Kb1 Re8 15. Bh6 {B78: Sicilian Dragon: Yugoslav Attack, 9 Bc4 Bd7 10 0-0-0 Rc8} (15. g4 hxg4 16. f4 Nc4 17. Qd3 Na5 18. Bxf6 exf6 19. Bd5 Nc6 20. Nxc6 bxc6 21. Bxf7+ Kxf7 22. Qxd6 Rxc3 23. Qxd7+ Qxd7 24. Rxd7+ {½-½ (47) Vachier Lagrave,M (2789)-Nakamura,H (2781) London 2017}) 15... Bh8 16. g4 Qa5 (16... Nc4 $14 17. Bxc4 Rxc4) 17. gxh5 (17. g5 $1 $18) 17... Nxh5 $16 18. Rhg1 Kh7 $146 (18... Nc4 $16 19. Bxc4 Rxc4) ({Predecessor:} 18... Nc4 19. Qd3 Ne5 20. Qe3 e6 21. Nde2 Rec8 22. Rxd6 Be8 {0-1 (47) Shodikulov,D (2112)-Golubev,R (2093) Tashkent 2010}) 19. Bg5 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 20. f4 Nc4 21. Qd3 e6 22. Rdf1 {[#]} (22. e5 $16) 22... Nxb2 $1 $15 {[%mdl 512]} 23. Kxb2 b4 $1 ({Not} 23... Rec8 24. Nce2 $16) 24. f5 $2 (24. Nd1 $1 $15 Bb5 25. Qd2 Bxf1 26. Rxf1) 24... Rxc3 $19 25. fxg6+ fxg6 26. Qd1 $2 (26. Qd2 {was the only chance.} Qc5 27. Rd1) 26... Qc5 27. e5 Qxe5 $2 (27... Bxe5 $19 28. Rg4 Rg3) 28. Rf7+ $17 Kg8 29. Rxd7 {Black must now prevent Qxh5.} Qxd4 30. Kc1 $2 {[%mdl 8192] [#]} (30. Qxd4 $17 Bxd4 31. Rg4) 30... d5 $2 (30... Rd3 $1 $19 {[%mdl 512]} 31. Qxd3 (31. cxd3 Qb2#) 31... Qxg1+ 32. Qd1 Bb2+ $1 {[%mdl 576] Deflection} 33. Kxb2 Qxd1) 31. Re1 $2 {[%mdl 8192] [#]} ({Don't blunder} 31. Qf1 $2 Rf3 $1 $19 {[%mdl 512]}) (31. Qxd4 $11 Bxd4 32. Re1) 31... Rcc8 $2 (31... Rd3 $1 $19 {( -> ...Qb2#)} 32. Qxd3 Qa1+ 33. Kd2 Bc3+ {[%mdl 64] Skewer} 34. Qxc3 Qxc3+ 35. Kd1 Rf8) 32. Qxd4 $11 Bxd4 33. Bh6 (33. Ba4 $11 {remains equal.}) 33... Kh8 34. Re2 ({Better is} 34. Rd6 $15) 34... a5 $17 35. Ba4 Bg7 ({Black should play} 35... Ng3 $17 36. Rg2 Nf5 37. Rxg6 Rg8 38. Rxg8+ Rxg8) 36. Bxg7+ $1 $11 {The position is equal.} Nxg7 37. Rg2 $1 Rcd8 {Strongly threatening ...Rxd7.} 38. Ra7 Ra8 39. Rb7 Rab8 40. Ra7 Ra8 $1 {[%cal Ra8a7]} 41. Rb7 {Accuracy: White = 29%, Black = 27%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.1"]
[White "Van Foreest, Lucas"]
[Black "Smirnov, Anton"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "2523"]
[BlackElo "2604"]
[Annotator "ChessBase"]
[PlyCount "48"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:34]} Nf6 {[%emt 0:00:05]} 3. c4 {[%emt 0:00:18]} d5 {[%emt 0:00:06]} 4. g3 {[%emt 0:00:07]} Bb4+ {[%emt 0:00:07]} 5. Bd2 {[%emt 0:00:28]} Bd6 {[%emt 0:00:13]} 6. Bg2 {[%emt 0:01:30]} c6 {[%emt 0:00:25]} 7. O-O {[%emt 0:01:32]} Nbd7 {[%emt 0:00:06]} 8. Nc3 {[%emt 0:08:55]} dxc4 {[%emt 0:12:13]} 9. e4 {[%emt 0:00:29]} e5 {[%emt 0:02:31]} 10. Qe2 {[%emt 0:14:13]} b5 {[%emt 0:14:29]} 11. dxe5 {[%emt 0:12:09]} Nxe5 {[%emt 0:01:12]} 12. Nxe5 {[%emt 0:00:12]} Bxe5 {[%emt 0:00:07]} 13. f4 {[%emt 0:00:03]} Bd4+ {[%emt 0:03:11]} 14. Kh1 {[%emt 0:00:05]} O-O {[%emt 0:07:35]} 15. e5 {[%emt 0:00:51]} Bg4 {[%emt 0:03:22]} 16. Qe1 {[%emt 0:00:55]} Nd5 {[%emt 0:04:29]} 17. Nxd5 {[%emt 0:17:19]} cxd5 {[%emt 0:00:26]} 18. Bb4 {[%emt 0:06:29]} Re8 {[%emt 0:06:30]} 19. Qd2 {[%emt 0:00:18]} Qb6 {[%emt 0:06:00]} 20. Ba5 {[%emt 0:02:59]} Be3 {[%emt 0:07:41]} 21. Qe1 {[%emt 0:00:05]} Qc5 {[%emt 0:00:18]} 22. Bb4 {[%emt 0:00:06]} Qb6 {[%emt 0:00:05]} 23. Ba5 {[%emt 0:00:12]} Qc5 {[%emt 0:00:16]} 24. Bb4 {[%emt 0:00:03]} Qb6 {[%emt 0:00:20]} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.2"]
[White "Abdusattorov, Nodirbek"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2635"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,101,29,24,0,12,14,19,19,21,21,22,14,25,18,17,19,18,14,15,10,17,10,10,7,15,17,20,5,12,0,12,12,21,13,18,14,18,21,21,0,8,4,20,14,22,4,20,0,0,3,4,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-11,-19,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} Ne8 10. Nd5 {[%cal Bc3d5,Bd5e3,Be3f5,Bf5e7][%mdl 32]} Bd6 11. Re1 c6 12. Ne3 Bc7 13. Nf5 d5 14. Ne7+ Kh8 {White must now prevent ...Be6.The position is equal.} 15. Nxc8 Rxc8 16. d3 f5 {[#]} 17. Qf3 $146 Qd7 18. Bf4 Nf6 19. g3 Bxf4 20. Qxf4 Rce8 21. c4 a6 22. Bg2 dxc4 23. dxc4 g6 24. Rxe8 Rxe8 25. Bf3 Kg7 26. Rd1 Qe7 27. Rd3 Qc5 28. h4 h6 29. Kg2 Re7 30. Rd8 (30. a3 {seems wilder.} Qe5 31. Qc1 Rd7 32. Rxd7+ Nxd7 33. Qd2) 30... Qe5 31. Qxe5 (31. Qc1 {looks sharper.} Ne4 32. Bxe4 Qxe4+ 33. Kh2 Qe2 34. Kg1) 31... Rxe5 $11 {[%mdl 4096] Endgame KRB-KRN} 32. b4 g5 33. Rb8 Re7 34. hxg5 hxg5 35. Kf1 Ng4 36. Bd1 Ne5 37. c5 Nd3 {...Re1+ is the strong threat.} 38. Bc2 Nxb4 39. Bxf5 Nxa2 40. Bc8 Nb4 {Threatening ...a5.} 41. Rxb7 Rxb7 42. Bxb7 {KB-KN} a5 {[%cal Ba6a5,Ba5a4,Ba4a3][%mdl 32]} 43. Ke2 a4 {Strongly threatening ...a3.} 44. Kd2 a3 {And now ...a2 would win.} 45. Kc1 $1 ({Don't go for} 45. Kc3 $2 {[#]} Nd3 $1 $19 {[%mdl 512]}) 45... Kf6 46. f4 gxf4 47. gxf4 Ke6 {[#]} (47... a2 $5 48. Kb2 $8 Kf5 $11) 48. f5+ $1 {[%mdl 512]} Kxf5 49. Kb1 Ke5 {[#] Hoping for ...Kd5.} 50. Bxc6 $1 {[%mdl 512]} Nxc6 51. Ka2 {Accuracy: White = 74%, Black = 47%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.3"]
[White "Mamedov, Rauf"]
[Black "Warmerdam, Max"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2659"]
[BlackElo "2498"]
[Annotator "TA RC"]
[PlyCount "49"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,93,15,24,24,19,25,22,-20,-15,-24,-28,-26,5,9,16,15,14,12,10,14,12,0,0,-29,-33,-33,-30,-66,-33,-41,91,-80,-85,-61,-85,-87,-87,-81,-10,-84,-74,-56,-35,-48,-52,-65,0,0,25,27,186,183,250,249,560,558,555,546,541,539,698,233,992,809,714,594,1528,1349,1594,1412,1178,448,1762,1827,1709,1713,5477,5477,5477,5375,5462,5379,822,764]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a6 6. Bb3 Ba7 7. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} h6 8. h3 O-O 9. g4 {The position is equal.} d5 10. g5 hxg5 11. Nxg5 Ne7 12. exd5 Nexd5 13. Nde4 Bf5 14. Qf3 Bg6 $1 15. Rg1 c6 {[#]} 16. Bd2 $146 ({Predecessor:} 16. Qg3 Qe7 17. Nxf6+ Qxf6 18. Ne4 Bxe4 19. dxe4 Nf4 20. Bxf4 exf4 21. Qg5 Qxg5 22. Rxg5 {½-½ (46) Del Monaco,A (2285)-Feher,A (2348) Budapest 2010}) 16... a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 17. O-O-O a4 18. Bc2 Nh5 {White should prevent ...Nhf4.} 19. d4 exd4 {Threatens to win with ...a3!} (19... a3 $5 20. bxa3 (20. dxe5 axb2+ 21. Kb1 b5 $17) 20... exd4 $15) 20. c4 Nb6 {[#]} (20... Qb6 $15) 21. Ng3 $2 {[#]} (21. Ne6 $1 $16 {[%cal Re6d8] is necessary to keep the advantage.} fxe6 {[%mdl 64] Discovered Attack} 22. Qg4) 21... d3 $1 $17 {[%cal Rd3c2]} 22. Bxd3 Qxd3 23. Qxd3 Bxd3 24. Nxh5 Bg6 (24... Bxc4 25. Ne4 $18) ({Black should try} 24... Nxc4 $17 25. Ne6 Bg6 26. Nhxg7 a3) 25. Nf4 {Played: Ng5-e6} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.4"]
[White "Ganguly, Surya Shekhar"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2636"]
[BlackElo "2606"]
[Annotator "RC"]
[PlyCount "97"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:16]} d5 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:29]} Nf6 {[%emt 0:01:03]} 4. cxd5 {[%emt 0:00:49]} exd5 {[%emt 0:00:28]} 5. Bg5 {[%emt 0:00:32]} c6 {[%emt 0:00:10]} 6. e3 {[%emt 0:00:08]} Bf5 {[%emt 0:00:39]} 7. Qf3 {[%emt 0:00:48]} Bg6 {[%emt 0:00:09]} 8. Bxf6 {[%emt 0:00:05]} Qxf6 {[%emt 0:00:10]} 9. Qxf6 {[%emt 0:00:03]} gxf6 {[%emt 0:00:11]} 10. Nf3 {[%emt 0:08:59]} Be7 {[%emt 0:03:36]} 11. Nh4 {[%emt 0:03:35]} Nd7 {[%emt 0:02:40]} 12. Ne2 {[%emt 0:00:34]} f5 {[%emt 0:00:20]} 13. g3 {[%emt 0:00:08]} Bxh4 {[%emt 0:00:28]} 14. gxh4 {[%emt 0:00:05]} Nf6 {[%emt 0:01:48]} 15. Nf4 {[%emt 0:08:50]} Nh5 {[%emt 0:04:21]} 16. Be2 {[%emt 0:01:39]} Nxf4 {[%emt 0:01:34]} 17. exf4 {[%emt 0:00:04]} h5 {[%emt 0:02:47]} 18. Kd2 {[%emt 0:02:40]} Kd7 {[%emt 0:09:06]} 19. Bd3 {[%emt 0:19:00]} Rae8 {[%emt 0:16:52]} 20. Rhg1 {[%emt 0:07:48]} Kd6 {[%emt 0:01:37]} 21. b4 {[%emt 0:04:48]} Re7 {[%emt 0:10:45]} 22. a4 {[%emt 0:01:53]} Rhe8 {[%emt 0:09:33]} 23. Ra3 {[%emt 0:01:41]} b6 {[%emt 0:09:38]} 24. Rc3 {[%emt 0:04:12]} Rc7 {[%emt 0:03:27]} 25. Rgc1 {[%emt 0:06:03]} Ree7 {[%emt 0:01:32]} 26. a5 {[%emt 0:05:37]} Re8 {[%emt 0:14:12]} 27. axb6 {[%emt 0:04:51]} axb6 {[%emt 0:00:06]} 28. Ra1 {[%emt 0:00:53]} b5 {[%emt 0:02:04]} 29. Ra6 {[%emt 0:04:28]} Kd7 {[%emt 0:00:32]} 30. Rc5 {[%emt 0:02:56]} Re6 {[%emt 0:04:25]} 31. Ra8 {[%emt 0:01:47]} Rb7 {[%emt 0:00:22]} 32. Rc1 {[%emt 0:02:44]} Ke7 {[%emt 0:01:29]} 33. Rca1 {[%emt 0:02:04]} Kd7 {[%emt 0:01:32]} 34. Rf8 {[%emt 0:02:27]} Ke7 {[%emt 0:01:52]} 35. Rh8 {[%emt 0:03:53]} Kf6 {[%emt 0:01:51]} 36. Rc8 {[%emt 0:02:58]} Rb6 {[%emt 0:01:01]} 37. Rd8 {[%emt 0:04:04]} Re7 {[%emt 0:00:30]} 38. Raa8 {[%emt 0:00:59]} Re6 {[%emt 0:02:07]} 39. Ra7 {[%emt 0:01:20]} Kg7 {[%emt 0:01:50]} 40. Rdd7 {[%emt 0:00:00]} Kf6 {[%emt 0:00:00]} 41. Bc2 {[%emt 0:08:56]} Re8 {[%emt 0:01:30]} 42. Ra3 {[%emt 0:03:40]} Re6 {[%emt 0:03:11]} 43. Rd8 {[%emt 0:00:47]} Re7 {[%emt 0:01:11]} 44. Rda8 {[%emt 0:00:41]} Re6 {[%emt 0:00:58]} 45. Rg3 {[%emt 0:04:58]} Re7 {[%emt 0:02:24]} 46. Rg5 {[%emt 0:14:41]} Re6 {[%emt 0:01:29]} 47. Ra7 {[%emt 0:00:11]} Re8 {[%emt 0:00:30]} 48. Ra3 {[%emt 0:03:49]} Re6 {[%emt 0:00:32]} 49. Bd3 {[%emt 0:00:07] Ke5} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.5"]
[White "Anton Guijarro, David"]
[Black "Nihal Sarin"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2694"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,129,0,0,0,0,0,9,1,0,9,26,13,22,19,18,26,9,16,11,27,22,57,12,14,14,16,13,11,14,28,27,99,119,135,127,134,124,132,131,191,187,177,187,191,176,185,187,197,184,202,177,381,189,204,197,261,204,204,0,260,0,198,198,202,204,303,239,482,206,207,206,283,272,268,245,256,230,304,270,335,345,512,499,566,385,456,418,547,541,645,618,713,432,556,452,500,401,598,512,1354,1268,12837,945,12841,12842,12843,12843,12845,12845,12846,12847,12847,12847,12848,12848,12849,12849]} 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. b3 Bd6 6. Bb2 O-O 7. d4 Nbd7 8. Be2 b6 {D45: Semi-Slav: 5 e3} 9. O-O Qe7 (9... Bb7 10. Qc2 Qe7 11. Rfe1 Rfe8 12. Rad1 Rad8 13. Bf1 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. cxd5 cxd5 17. Nb5 Rc8 18. Qb1 Bxb2 19. Qxb2 Ba6 20. a4 Bxb5 21. axb5 {½-½ (55) Ding,L (2811)-Shankland,S (2705) chess.com INT 2019}) 10. Re1 Bb7 {The position is equal.} 11. Bd3 Rfe8 12. cxd5 Nxd5 13. Ne4 Bc7 $146 ({Predecessor:} 13... Bb4 14. Ned2 Qf6 15. a3 Be7 16. Nc4 Qh6 17. e4 {1-0 (53) Kalyoncuoglu,O (2078)-Rasstrigin,A (1927) LSS email 2011}) 14. Rc1 Rad8 15. Bb1 e5 16. Ng3 g6 17. Be4 c5 18. b4 (18. Bxd5 $5 Bxd5 19. e4 $14) 18... f5 19. Bxd5+ $1 Bxd5 20. dxc5 Nf6 21. Qc2 bxc5 22. bxc5 Qe6 (22... Rb8 $11 {remains equal.}) 23. Ng5 $1 $36 {[%cal Rg5e6][%mdl 2048] Keeping Black busy.} Qc6 24. e4 fxe4 25. N5xe4 Nxe4 26. Nxe4 Bxa2 {[#]} (26... Qe6 $16 27. f3 a6) 27. Bxe5 $1 $18 {[%mdl 576] Discovered Attack} Rxe5 (27... Bxe5 28. Qxa2+) 28. Qxa2+ {[%mdl 64] Double Attack} Kg7 29. f3 a5 30. Qb2 Kg8 31. Red1 {aiming for Rxd8+.} Rb8 32. Qa2+ Kg7 $2 (32... Qe6 {was called for.} 33. Qa4 Rf5) 33. Rc2 (33. Qa1 $142 Kg8 34. Rd7 $1 {[%mdl 512]}) 33... Rbe8 34. Qb2 {Hoping for Nd6.} Kh6 (34... Kg8 $142 35. Rd7 R8e7) 35. Qc1+ Kg7 36. Qb2 Kh6 $1 37. Qc1+ Kg7 $1 38. Rcd2 {[%cal Bc2d2,Bd2d3,Bd3a3][%mdl 32]} R8e7 39. Qc3 Kh6 (39... Kg8 {keeps fighting.} 40. Rd3 Rf5) 40. Rd3 Rf5 $2 (40... Kg7 41. f4 {[%mdl 64] Pin} Qxe4) 41. Qc4 (41. f4 $142 {Threatening mate with Rh3+.} Rxe4 42. Rh3+ Rh5 43. Rxh5+ gxh5 {[#]} 44. Rd6+ $1 {[%mdl 512]} Qxd6 45. cxd6 Bb6+ 46. Kf1 Rxf4+ 47. Ke2) 41... Kg7 42. g3 Rf8 43. Kg2 Be5 44. Ra3 Bc7 45. Rd5 h6 46. Rad3 Kh7 47. h4 Be5 (47... Kh8 $142 48. h5 gxh5 49. Rxh5 Re6) 48. Re3 a4 49. Ra3 Qb7 {White must now prevent ...Qb2+.} 50. Rd2 Ref7 51. Qxa4 Qb1 52. Rad3 Kh8 53. Qd1 Qb5 54. Qb3 Qc6 55. Qd5 Qc7 (55... Qxd5 $142 56. Rxd5 Bc7) 56. Qe6 {Rd7 is the strong threat.White is clearly winning.} Bxg3 (56... Re7 $142 57. Qa6 Rg7) 57. Nxg3 Qxc5 58. Qxg6 {And now Rd7 would win.} Rg7 59. Qxh6+ Kg8 60. Qe6+ Kh8 61. Rd5 Rxg3+ 62. Kxg3 Qg1+ 63. Rg2 {White wants to mate with Qh6+.} Rxf3+ 64. Kxf3 {[%cal Re6h6]} Qf1+ 65. Rf2 {Accuracy: White = 58%, Black = 34%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.6"]
[White "Saduakassova, Dinara"]
[Black "Grandelius, Nils"]
[Result "0-1"]
[ECO "D71"]
[WhiteElo "2519"]
[BlackElo "2673"]
[Annotator "TA RC"]
[PlyCount "60"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,112,0,-6,-8,-4,-3,0,0,0,-47,-4,-18,0,-13,-16,-20,0,0,0,-20,-5,-24,0,-90,-90,-124,-105,-113,-118,-128,-100,-146,-140,-194,-192,-207,-193,-256,-258,-240,-217,-224,-237,-235,-242,-273,-222,-218,-227,-225,-214,-220,-213,-208,-222,-263,-255,-244,0,-182,-182,-151,-157,-238,-247,-331,-296,-338,-327,-338,-313,-451,-410,-532,-498,-575,-455,-476,-468,-452,-458,-744,-764,-757,-733,-769,-770,-695,-712,-697,-671,-652,-601,-29991,-29992]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 Nb6 7. Nc3 Nc6 8. O-O Nxd4 9. Nxd4 Qxd4 10. Qxd4 Bxd4 {[#]} 11. a4 $146 {D71: Fianchetto Grünfeld: 3 g3 d5 sidelines and 5 cxd5 (without Nf3).} ({Predecessor:} 11. Nb5 Be5 12. f4 Bd6 13. Nxd6+ exd6 14. e4 Bd7 15. b3 Bc6 16. Bb2 O-O 17. Rac1 Rfe8 18. Rfe1 Nd7 {0-1 (60) Lopez Martinez,J (2581)-Krysa,L (2503) Barcelona 2018}) 11... Bxc3 12. bxc3 a5 13. Bf4 {The position is equal.} c6 14. Bc7 Nd7 15. Rfd1 O-O 16. c4 Re8 17. Ra3 Nc5 18. Bb6 Na6 19. c5 Nb4 20. e4 f5 21. Bh3 (21. Bc7 $11) 21... fxe4 $17 22. Bxc8 Rexc8 ({Don't take} 22... Raxc8 23. Rd7 $15) 23. Rd7 Nd5 24. Rxb7 Kf7 25. Kf1 Ke6 26. Ke2 (26. Ra2 $17) 26... Rf8 $19 27. Bc7 h5 28. Rab3 (28. h3 $142) 28... Rf5 29. Bb8 Nf6 30. Rc3 Ng4 {Played: Nf6-d7} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.19"]
[Round "8.7"]
[White "Smeets, Jan"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "B55"]
[WhiteElo "2585"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "94"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 5. f3 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 6. Nb3 {[%emt 0:00:13]} d5 {[%emt 0:00:00]} 7. Bg5 {[%emt 0:02:44]} Be6 {[%emt 0:00:01]} 8. Bxf6 {[%emt 0:01:20]} gxf6 {[%emt 0:00:06]} 9. exd5 {[%emt 0:00:30]} Qxd5 {[%emt 0:00:16]} 10. Qxd5 {[%emt 0:00:12]} Bxd5 {[%emt 0:00:04]} 11. Nc3 {[%emt 0:00:07]} Be6 {[%emt 0:00:19]} 12. O-O-O {[%emt 0:00:31]} Nc6 {[%emt 0:00:22]} 13. Bb5 {[%emt 0:00:53]} Rc8 {[%emt 0:00:11]} 14. Nd5 {[%emt 0:02:51]} f5 {[%emt 0:00:10]} 15. Nf6+ {[%emt 0:02:23]} Ke7 {[%emt 0:00:05]} 16. Nd5+ {[%emt 0:00:07]} Ke8 {[%emt 0:04:20]} 17. Ba4 {[%emt 0:08:01]} Bh6+ {[%emt 0:05:14]} 18. Kb1 {[%emt 0:00:07]} Kf8 {[%emt 0:01:15]} 19. Nc5 {[%emt 0:02:45]} Nd4 {[%emt 0:05:37]} 20. Nxe6+ {[%emt 0:03:37]} fxe6 {[%emt 0:02:48]} 21. Nf6 {[%emt 0:02:30]} Ke7 {[%emt 0:14:42]} 22. Nd7 {[%emt 0:00:55]} Rhd8 {[%emt 0:00:11]} 23. Nxe5 {[%emt 0:35:56]} Bg7 {[%emt 0:04:52]} 24. f4 {[%emt 0:02:09]} Bxe5 {[%emt 0:02:12]} 25. fxe5 {[%emt 0:00:06]} Rc4 {[%emt 0:08:36]} 26. b3 {[%emt 0:26:56]} Rc7 {[%emt 0:26:35]} 27. Rd3 {[%emt 0:15:07]} Ne2 {[%emt 0:08:05]} 28. Rh3 {[%emt 0:00:20]} Kf8 {[%emt 0:00:59]} 29. Kb2 {[%emt 0:00:10]} Nf4 {[%emt 0:07:21]} 30. Rg3 {[%emt 0:03:41]} Rd4 {[%emt 0:02:25]} 31. a3 {[%emt 0:00:42]} Ng6 {[%emt 0:03:51]} 32. Re1 {[%emt 0:00:25]} Rd5 {[%emt 0:02:49]} 33. b4 {[%emt 0:00:30]} Rxe5 {[%emt 0:02:26]} 34. Rd1 {[%emt 0:00:33]} Re2 {[%emt 0:00:58]} 35. Rd8+ {[%emt 0:00:29]} Ke7 {[%emt 0:01:16]} 36. Ra8 {[%emt 0:00:08]} a6 {[%emt 0:00:49]} 37. h4 {[%emt 0:00:10]} Kf6 {[%emt 0:02:56]} 38. h5 {[%emt 0:00:35]} Nf4 {[%emt 0:00:29]} 39. Rf8+ {[%emt 0:00:53]} Ke5 {[%emt 0:02:12]} 40. h6 {[%emt 0:00:00]} Rxg2 {[%emt 0:00:00]} 41. Rc3 {[%emt 0:23:46]} Rxc3 {[%emt 0:08:55]} 42. Kxc3 {[%emt 0:00:05]} Nd5+ {[%emt 0:01:55]} 43. Kd3 {[%emt 0:02:19]} f4 {[%emt 0:02:28]} 44. Rf7 {[%emt 0:00:25]} Nf6 {[%emt 0:08:07]} 45. Rxb7 {[%emt 0:03:09]} Ne4 {[%emt 0:01:44]} 46. Rg7 {[%emt 0:13:33]} Rd2+ {[%emt 0:02:14]} 47. Kc4 {[%emt 0:00:05]} f3 {[%emt 0:00:15] Kd4+} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.1"]
[White "Grandelius, Nils"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[ECO "A09"]
[WhiteElo "2673"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,64,-11,-9,-12,-12,-2,-6,-15,-11,-4,-22,-14,0,-5,-5,-43,-37,-35,-24,-36,-32,-82,-25,-33,-29,-17,-20,-32,-42,-160,-172,-200,-187,-173,-183,-200,-195,-198,-197,-182,-195,-368,-277,-276,-278,-301,-313,-388,-373,-597,-580,-657,-661,-642,-643,-599,-559]} 1. Nf3 d5 2. g3 g6 3. c4 dxc4 4. Na3 Bg7 5. Nxc4 Nc6 6. d3 {A09: Réti Opening: 1 Nf3 d5 2 c4} e5 7. Bd2 a5 (7... Nge7 8. h4 h6 9. Bc3 f6 10. Ne3 Be6 11. h5 g5 {0-1 (72) Grischuk,A (2771)-Nepomniachtchi,I (2763) St Petersburg 2018}) 8. Bg2 {The position is equal.} Nge7 9. Bc3 $146 {[%cal Rf3e5]} ({Predecessor:} 9. O-O O-O 10. Bc3 f6 {½-½ (59) Dastan,B (2529)-Samani,Y (2263) Kocaeli 2017}) 9... f6 10. b3 O-O 11. O-O Be6 12. e4 b5 13. Ne3 Nd4 14. b4 Qd7 15. Qd2 Rfc8 (15... Bh6 $17) 16. Bxd4 $1 $11 exd4 17. Nc2 axb4 {Strongly threatening ...c5.} 18. Ncxd4 Bf7 19. Nb3 (19. Qxb4 $15 c5 20. Qxb5) 19... c5 $17 20. d4 c4 $1 {[%cal Rc4b3]} 21. Nc5 Qd6 22. Bh3 {[#]} Rxc5 $1 23. dxc5 {[#]} Qxd2 $1 (23... Qxc5 24. Qd7 $15) 24. Nxd2 f5 25. Rab1 $2 (25. Rad1 {was called for.} c3 26. Nb3) 25... Bc3 ({Don't do} 25... Rxa2 26. Nf3 $19) 26. Nf3 Rxa2 27. Rfd1 b3 {[%cal Bb4b3,Bb3b2][%mdl 32]} ({Not} 27... fxe4 28. Ng5 $17) 28. exf5 {intending Ng5.} Bf6 29. Rd6 $2 (29. fxg6 Bxg6 30. Be6+ Kg7 31. Rxb3 cxb3 32. Bxb3) 29... b2 $19 {Black is clearly winning.} 30. Bf1 Ra1 31. Rdd1 Rxb1 32. Rxb1 Bd5 {Accuracy: White = 34%, Black = 78%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.2"]
[White "L'Ami, Erwin"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2606"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,83,49,19,46,45,64,65,64,77,87,41,46,39,43,27,27,23,43,29,50,29,29,33,60,7,11,4,5,0,13,6,26,16,38,37,39,39,38,38,39,38,41,42,63,57,92,97,101,95,95,104,97,98,85,77,100,93,186,204,330,343,322,227,217,246,332,325,453,446,462,422]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. Bf4 h6 {E63: King's Indian: Fianchetto: Panno Variation with 7...a6} (8... Rb8 9. Rc1 h6 10. d5 e5 11. Bd2 Nd4 12. Ne1 c5 13. dxc6 bxc6 14. e3 Nf5 15. Bxc6 Rxb2 16. Nd3 {0-1 (39) Jumabayev,R (2633)-Chigaev,M (2640) Riga 2019}) 9. Qc1 g5 10. Bd2 Bf5 {White is slightly better.} 11. d5 Na5 {[%cal Bc6a5,Ba5c4,Bc4d2][%mdl 32]} 12. h4 $146 (12. b3 {keeps more tension.} c5 13. h4 g4 14. Ne1 Kh7 15. Nc2) ({Predecessor:} 12. b3 c5 13. h4 g4 14. Ne1 h5 15. e4 Bg6 16. Nd3 {0-1 (38) Ambartsumova,K (2359)-Bodnaruk,A (2432) Sochi 2017}) 12... Nxc4 13. hxg5 Nxd2 14. gxf6 Nxf3+ 15. Bxf3 Bxf6 16. Qxh6 Bg7 17. Qf4 e6 18. Kg2 Be5 19. Qh6 (19. Qd2 $14) 19... Qf6 $11 20. Qxf6 Bxf6 21. Rac1 Rab8 22. Rfd1 Rfc8 23. b3 Kf8 24. Be4 Bxe4+ 25. Nxe4 Be7 26. f4 exd5 27. Rxd5 c6 $1 {[%cal Rc6d5]} 28. Rh5 {Strongly threatening f5.} d5 29. Nf2 $1 Ba3 30. Rch1 Re8 31. Kf3 Bb2 32. Ng4 Ke7 33. Nh6 Rh8 34. g4 a5 35. g5 a4 (35... Kf8 $16) 36. bxa4 $18 Rhf8 (36... Bc3 {was called for.} 37. e4 dxe4+ 38. Kxe4 Rbd8) 37. Rb1 Bc3 38. e4 dxe4+ 39. Kxe4 Kd6 40. Rh3 Ba5 41. Kf5 Kc5 42. Rd3 {Accuracy: White = 66%, Black = 45%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.3"]
[White "Keymer, Vincent"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2527"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,73,6,27,32,25,30,32,30,28,17,0,0,1,0,0,0,-14,-24,22,0,0,0,0,0,16,6,6,6,37,22,28,10,10,13,10,10,21,0,0,0,0,0,0,-10,-10,-10,-10,-10,-10,-6,-8,-10,-10,-10,-11,-26,-29,-58,-58,-106,-106,-106,-106,-106]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5 5. Bg5 c6 6. Qc2 ({Predecessor:} 6. e3 h6 7. Bh4 Be6 8. Bd3 Nbd7 9. Nge2 g5 10. Bg3 Nh5 {½-½ (37) Sonis,F (2422)-Moroni,L (2457) Civitanova Marche 2016}) 6... Be6 7. e3 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} Nbd7 8. Bd3 h6 9. Bh4 {White is slightly better.} g5 10. Bg3 Nh5 11. Nge2 Nxg3 12. Nxg3 h5 13. e4 $146 (13. Nf5 h4 14. O-O-O {½-½ (43) Karjakin,S (2783)-Meier,G (2630) chess.com INT 2017}) 13... dxe4 14. Ngxe4 Nb6 15. O-O-O Qe7 $1 ({Avoid the trap} 15... Qxd4 $2 16. Ba6 $1 $18 {[%mdl 512]}) 16. Nc5 O-O-O 17. Rhe1 Rxd4 18. Nxe6 fxe6 {[#]} 19. Rxe6 $1 {[%mdl 512]} Qd8 (19... Qxe6 $2 {too greedy.} 20. Bf5 $18) 20. Bf5 Rxd1+ $1 21. Qxd1 Kc7 22. Qxd8+ Kxd8 23. Ne4 g4 24. Ng5 {Nf7+ is the strong threat.} Rg8 $1 {[%cal Rg8g5]} ({Don't blunder} 24... Bh6 $2 {[#]} 25. Rxh6 $1 {[%mdl 512]} Rxh6 26. Nf7+ Ke7 27. Nxh6 $18) 25. Nf7+ Kc7 26. Rg6 Rg7 27. Rxg7 Bxg7 $11 {[%mdl 4096] Endgame KBN-KBN} 28. Bg6 h4 29. Bf5 Bd4 30. Bxg4 Bxf2 31. Ne5 Nd5 32. Bf3 Nb4 33. a3 Bd4 34. axb4 {Strongly threatening Ng6.} Bxe5 35. Kc2 Bxh2 36. Kb3 Be5 37. Bg4 {Accuracy: White = 76%, Black = 83%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.4"]
[White "Eljanov, Pavel"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "2650"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,107,8,4,18,15,0,10,-2,15,21,20,6,16,6,19,26,68,53,70,38,45,53,60,48,60,8,13,10,92,0,0,0,0,0,46,-14,-14,-10,0,0,0,0,0,-22,-26,-71,-69,-72,-63,-66,-75,-68,-56,-79,-61,-82,-64,-75,-76,-76,-73,-68,-75,-76,-67,-76,-76,-76,-76,-104,-95,-95,-95,-95,-95,-95,-95,-95,-43,-60,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. O-O e6 7. e3 Nge7 8. d4 O-O 9. Re1 {A37: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3} Rb8 10. Rb1 a6 $146 ({Predecessor:} 10... b6 11. b3 d5 12. cxd5 exd5 13. Ba3 Re8 14. Rc1 cxd4 15. exd4 Bg4 16. Nb5 Qd7 {1-0 (85) Eljanov,P (2680)-Tan,J (2502) chess.com INT 2019}) 11. a4 Qb6 {[%cal Rc5d4]} 12. b3 cxd4 13. exd4 Nxd4 14. Nxd4 Bxd4 15. Ne4 e5 16. Bg5 $1 $36 {[%cal Rg5e7][%mdl 3072] White has compensation. White has the initiative.} d5 17. c5 Qc7 18. Nf6+ {[%mdl 64] [#] Double Attack, Discovered Attack} Kg7 19. Qd2 $1 ({Stronger than} 19. Nxd5 Nxd5 20. Bxd5 Qxc5 $17) ({Reject} 19. Bxd5 h6 $17) 19... Ng8 20. Nxd5 (20. Nxg8 $14 Kxg8 21. Bf6) 20... Qxc5 $11 21. Rbc1 Qa7 (21... Qd6 $1 $11) 22. b4 ({Better is} 22. Rxe5 $16 {Re4 is the strong threat.} Bxe5 23. Be3) 22... Be6 23. Nc7 Bf5 24. a5 b6 {[#] Hoping for ...bxa5.} 25. Be3 (25. g4 $14 Rfc8 26. axb6 (26. gxf5 Rxc7 27. Rxc7 Qxc7 $15) 26... Bxb6 27. gxf5 Rxc7 28. Rxc7 Qxc7 29. Rc1) 25... bxa5 26. bxa5 Rfc8 27. Bxd4 Qxd4 28. Qxd4 exd4 29. Nxa6 Rb5 30. Nc7 Rxa5 {Strongly threatening ...Nf6.} 31. Ne8+ Kf8 32. Nd6 Rxc1 33. Rxc1 Be6 34. Nb7 Ra3 35. Nc5 Bf5 36. Rd1 Bg4 37. f3 Bxf3 38. Bxf3 Rxf3 39. Rxd4 $17 {[%mdl 4096] Endgame KRN-KRN} Rc3 40. Rd8+ Kg7 41. Ne4 Rc2 42. g4 Nf6 43. Nxf6 Kxf6 {KR-KR} 44. Rd5 Re2 45. h3 h6 46. Ra5 Ke6 (46... Re5 $17 47. Ra7 Re7 48. Ra6+ Kg5) 47. Ra7 h5 (47... Rb2 $15) 48. Ra6+ $11 {The position is equal.} Ke5 49. gxh5 gxh5 50. Ra5+ Kf4 {White must now prevent ...f5.} 51. Rxh5 f5 52. h4 Kg4 53. Rg5+ Kxh4 54. Rxf5 {Accuracy: White = 62%, Black = 50%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.5"]
[White "Warmerdam, Max"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2498"]
[BlackElo "2523"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,89,18,18,15,24,8,8,10,12,10,18,10,4,11,13,2,40,29,29,20,34,23,54,47,37,43,42,43,36,31,45,45,36,52,50,47,45,29,56,53,80,77,72,66,71,80,77,48,63,66,58,42,75,88,79,25,25,13,13,14,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 Nf6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. d4 b6 8. Be2 {A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4)} Bb7 9. Bf3 Bxf3 10. Nxf3 Bd6 11. Qa4+ c6 12. O-O O-O 13. Re1 (13. Rb1 Qf5 14. Be3 h6 15. Rxb6 axb6 16. Qxa8 {1-0 (44) Nepomniachtchi,I (2773)-Harikrishna,P (2731) Kolkata 2019}) 13... Rc8 14. c5 {[#]} Bc7 $146 ({Predecessor:} 14... bxc5 15. Bg5 Qf5 16. dxc5 Qxc5 {½-½ (34) Potkin,V (2617)-Aleksandrov,A (2539) Loo 2014}) 15. cxb6 Bxb6 16. Ne5 Qd8 17. Ba3 Qd5 18. Rad1 Bc7 19. c4 Qa5 20. Qb3 Bxe5 $1 21. Rxe5 Qc7 22. Rg5 Nd7 23. Bb2 Rab8 24. Qc2 f6 25. Rg3 Rd8 26. h4 e5 27. Bc3 exd4 28. Rxd4 {[#] Hoping for Rdg4!} Ne5 29. Re4 Qd6 30. Re1 Nxc4 31. h5 Ne5 32. h6 Rb7 33. Qf5 g6 34. Bxe5 ({White should try} 34. f4 $16 Qc5+ 35. Kh1) 34... fxe5 $11 35. Rxe5 Rf8 {The position is equal.} 36. Qe4 Rb4 37. Qe2 Qd4 38. Re8 {[#] White threatens Qe6+ and mate.} Qa1+ $1 39. Kh2 {Threatening mate with Qe6+.} Rh4+ $1 40. Rh3 Rxh3+ 41. Kxh3 Qh1+ $1 42. Kg3 {Qe6+ would kill now.} Qxh6 43. Qe6+ Kh8 $1 44. Qf6+ Kg8 $1 45. Qe6+ {Accuracy: White = 72%, Black = 80%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.6"]
[White "Nihal Sarin"]
[Black "Smeets, Jan"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2618"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,89,29,16,19,12,39,37,36,34,41,23,28,25,30,29,27,13,19,14,20,14,15,6,27,24,19,15,25,26,18,19,26,9,19,23,41,7,15,4,7,7,9,13,33,0,0,0,5,0,32,33,33,33,40,39,40,40,40,47,45,0,0,0,62,33,66,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. Be2 e6 {B11: Caro-Kann: Two Knights Variation} 7. O-O dxe4 (7... d4 {looks sharper.} 8. Nb1 Nbd7 9. d3 Bd6 10. a4 O-O) (7... Be7 8. Rd1 d4 9. Nb1 c5 10. d3 Nc6 11. a4 O-O 12. Na3 Nd7 13. Qg3 Bh4 14. Qh2 {0-1 (69) Vachier Lagrave,M (2780)-Dreev,A (2677) Moscow 2019}) 8. Nxe4 Nxe4 {White is slightly better.} 9. Qxe4 Nd7 10. d4 Nf6 11. Qd3 Qc7 $146 ({Predecessor:} 11... Be7 12. c4 O-O 13. Be3 Qc7 14. Bf3 Rfd8 15. Qb3 Rd7 {½-½ (57) Milos,G (2618)-Rodshtein,M (2622) Bursa 2010}) 12. Rd1 Be7 13. c4 O-O 14. Be3 Rfd8 15. Qb3 Rd7 16. Bf3 Rad8 17. a3 h6 18. g3 b6 19. Kg2 c5 {[%cal Rc5d4]} 20. Qc3 a5 21. Rac1 cxd4 22. Bxd4 Ne8 23. h4 (23. Be5 $5 {[%cal Re5c7]} Bd6 24. Bxd6 Rxd6 25. b4 $11) 23... Bf6 24. Bxf6 Nxf6 25. b4 axb4 26. axb4 Rxd1 27. Rxd1 (27. Bxd1 {with more complications.} Rc8 28. Bf3 Nd7 29. Qd4 Kf8 30. Be2) 27... Rxd1 28. Bxd1 Kf8 29. Bf3 Ke7 30. c5 bxc5 31. bxc5 Kf8 32. Qb4 Ne8 33. Qb6 Qe5 34. Bc6 {[#] Hoping for Qd8!} Ke7 $1 35. Bxe8 Kxe8 $14 {[%mdl 4096] Endgame KQ-KQ} 36. c6 Qd6 (36... g5 $11) 37. Kg1 g5 38. h5 (38. Qb5 $14 Qc7 39. h5 (39. hxg5 hxg5 40. Qc5 f5 $14)) 38... f5 $11 {The position is equal.} 39. Qb7 Qd1+ 40. Kg2 {[#] White wants to mate with c7.} Qd5+ 41. Kh2 {Qb8+ is the strong threat.} Qd4 42. Kg1 Qd1+ 43. Kg2 {c7 would kill now.} Qd5+ 44. Kh2 {And now Qb8+ would win.} Qd4 45. Kg1 {Accuracy: White = 52%, Black = 56%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.21"]
[Round "9.7"]
[White "Smirnov, Anton"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "E25"]
[WhiteElo "2604"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,192,17,17,17,17,14,22,17,14,14,23,0,64,27,75,75,79,0,0,0,0,0,0,0,0,-41,-42,-65,-32,-38,-29,-30,-18,-30,-14,-21,0,0,0,0,14,0,0,0,0,0,0,0,0,0,29,0,233,225,250,235,247,247,243,239,225,227,201,204,275,280,566,151,221,221,210,210,209,206,452,402,571,495,485,479,464,464,425,372,916,14,13,13,13,12,10,0,0,0,76,62,69,0,0,0,13,12,20,0,0,0,12,16,77,70,166,166,421,414,414,414,418,214,376,77,74,0,102,105,105,87,335,133,143,0,337,327,304,298,277,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,-29971,-29973,-29973,-29975,-29974,-29976,-29975,-29977,-29977,-29978,-29979,-29981,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 Qa5 9. e4 Ne7 10. Be3 O-O 11. Qb3 Qc7 12. Bb5 {E25: Nimzo-Indian: Sämisch: 5...c5 6 f3 d5 7 cxd5.} Nec6 13. Ne2 Na5 14. Qb4 {The position is equal.} e5 15. Nd4 Nbc6 16. Qb2 {[#]} Rb8 $5 $146 {[%mdl 8] An interesting novelty.} (16... exd4 $11 17. cxd4 Bd7) ({Predecessor:} 16... Rd8 17. O-O exd4 18. cxd4 a6 19. Be2 Be6 20. Rab1 Nc4 21. Bxc4 Bxc4 22. Rfe1 f5 {½-½ (49) Cruzado Duenas,C (2601)-Almiron,L (2573) ICCF email 2014}) 17. Nf5 Be6 18. O-O a6 19. Ba4 (19. Be2 $1 $16) 19... Nc4 $11 20. Qf2 Ne7 21. Nd6 Nxe3 22. Qxe3 b6 23. Rfd1 (23. Ne8 $5 {[%cal Re8c7]} Qc8 24. Nd6 $11 (24. cxb6 Qc4 $17)) 23... bxc5 24. Rd2 Nc8 25. Nxc8 Rbxc8 26. Rad1 Rb8 27. h4 Qa5 28. Bc6 Bb3 29. Ra1 c4 30. Bd5 Kh8 31. Kh2 Rbd8 32. g4 Rd6 33. h5 Rf6 34. Kg3 h6 35. Rg2 Rd8 36. Kf2 (36. g5 {feels hotter.} hxg5 37. Kf2 Rg8 38. Rxg5 Qc7 39. Rh1) 36... Rxd5 $2 (36... Rf4 $11 {and Black is okay.}) 37. exd5 $18 Qxd5 38. g5 $1 {[%cal Rg5f6]} hxg5 39. Qxg5 {[%csl Gg2][%cal Rg5g7]} Rxf3+ 40. Kg1 {[%csl Gg2][%cal Rg5g7]} Qc5+ 41. Kh2 {[%csl Gg2][%cal Rg5g7][%mdl 1024] White has strong compensation.} Qf8 42. Rag1 $1 $40 {[%mdl 128] Black is in trouble.} Ba4 43. Rd2 (43. Qxg7+ Qxg7 44. Rxg7 Bc2 $16) (43. Qxe5 $6 Bd7 $16) 43... f6 $2 {[#]} (43... Rxc3 $2 44. h6 $18) (43... Rd3) 44. Qg6 $2 (44. Qg4 $1 $18 {[%mdl 512]} Rd3 45. Rxd3 cxd3 46. Qxa4) 44... Rd3 (44... Bc6 $16 {was necessary.} 45. Rgd1 (45. Rd8 Rf2+ 46. Kh3 Rf3+ {[%mdl 64] Double Attack} 47. Kh4 Rf4+ 48. Kh3 Rf3+ {[%mdl 64] Double Attack} 49. Kh2 Rf2+ 50. Kh3 Rf3+ $11 {[%mdl 64] Double Attack}) 45... Rd3) 45. Rxd3 cxd3 {[%mdl 4096] Endgame KQR-KQB} 46. h6 $1 {[%cal Rh6g7]} (46. Qxd3 Be8 $14) 46... gxh6 47. Qxd3 h5 $2 (47... Be8 48. Qxa6 Qf7) 48. c4 e4 (48... Qf7 {was called for.} 49. Qg6 Qxg6 50. Rxg6 a5 51. Rxf6 Kg7) 49. Qxe4 Bd7 {[#]} 50. Qh4 $1 Qf7 51. c5 Bc6 {[#] intending ...Qa2+.} 52. Qf4 $1 {Intending Qh6+ and mate.} Kh7 $2 (52... Qa2+ 53. Kh3 Qe6+ 54. Kh4 Kh7) 53. Kh3 $2 (53. Qd6 $18 Qd7 54. Qxd7+ Bxd7 55. Rd1) 53... Qe6+ $11 54. Kh4 {Rg3 is the strong threat.} Bd7 {[%csl Gd7][%cal Re6h3]} 55. Rh1 Kg6 56. Qd4 Kf7 57. Qf4 Qd5 (57... Kg6 $11 {keeps the balance.}) 58. Rf1 $1 $16 Qe6 {[%csl Gd7][%cal Re6h3]} 59. Rf3 (59. Qf3 $14) 59... Qe1+ $11 60. Rf2 Qc3 {[%csl Gd7][%cal Rc3h3] [#]} 61. Qf3 $1 Qd4+ $1 62. Qf4 Qc3 {[%csl Gd7][%cal Rc3h3] [#]} 63. Qf3 $1 Qd4+ $1 64. Kg3 h4+ (64... Bg4 $11 65. Qf4 (65. Qb7+ Kg6 $11) 65... Qd3+ 66. Kh2 Qh3+ 67. Kg1 Qc3) 65. Kh2 {Hoping for Qb3+.} Qe5+ {Played: Bd7-c6} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.1"]
[White "Abdusattorov, Nodirbek"]
[Black "Warmerdam, Max"]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "2635"]
[BlackElo "2498"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,77,28,9,34,21,37,27,20,0,0,0,0,0,0,13,23,-19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,13,14,29,108,99,460,485,485,481,479,461,492,490,475,468,789,672,816,809,778,798,795,789,950,933,1185,1183]} 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 9. f3 Nxd4 10. Qxd4 Be7 11. h4 Qc7 {B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} 12. g4 h5 13. gxh5 Nxh5 {[#] White has an edge.} 14. Bg2 $146 ({Predecessor:} 14. Bxe7 Kxe7 15. Qd2 Qc5 16. f4 Bc6 17. b4 Qa7 18. Qxd6+ Kf6 19. Bd3 Qe3+ 20. Kb2 {½-½ (34) Grosar,A (2485)-Kozul,Z (2580) Slovenia 1995}) 14... Rc8 15. Qd2 b5 16. Ne2 b4 17. Kb1 a5 18. Rhe1 e5 19. Rh1 Bb5 20. Bh3 Bxg5 21. hxg5 Bxe2 $1 22. Qxe2 Ng3 23. Qd2 {Rh2 is the strong threat.} Nxh1 24. Bxc8 Ke7 25. Ba6 Ng3 26. g6 $36 {[%mdl 2048] White has the initiative.} Nh5 $1 27. gxf7 Nf4 {[#]} (27... Kxf7 $11 {remains equal.} 28. Qxd6 (28. Qd5+ Ke7 $11) 28... Qxd6 29. Rxd6 Nf4) 28. Bc4 $1 $16 Qxc4 $2 {[%mdl 8192]} (28... Qc6 $16) 29. Qxd6+ $18 {[%mdl 64] Double Attack. White is clearly winning.} Kxf7 {aiming for ...Rh2.} 30. Qd7+ Kf6 {[#] And now ...Ne6 would win.} 31. b3 $1 ({Not} 31. Qf5+ Ke7 $18) 31... Qe6 {White must now prevent ...Qxd7.} 32. Rd6 {[%mdl 64] Pin} Ra8 33. a3 ({Don't take} 33. Rxe6+ Nxe6 34. Qb7 Rh8 $18) 33... Rb8 (33... bxa3 $142 34. c4 Qxd6 35. Qxd6+ Ne6 36. Qxa3 Rh8 37. Qxa5 Rh1+ 38. Kb2 Rh2+ 39. Ka3 Rg2) 34. a4 {Played: Qd7-c7} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.2"]
[White "Saduakassova, Dinara"]
[Black "Smirnov, Anton"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2519"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,76,16,17,21,10,-12,-1,-4,16,20,14,16,20,22,15,14,29,21,14,21,16,17,22,0,0,0,0,0,0,-5,29,0,0,0,0,0,0,6,20,17,19,0,0,-14,-15,-12,-17,-18,0,0,0,0,0,-22,-23,-112,-112,-366,-349,-457,-411,-525,-524,-708,-687,-727,-726]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. Be3 {E04: Open Catalan: 5 Nf3} (7. e3 Bd7 8. Qe2 b5 9. b3 cxb3 10. axb3 Be7 11. Bd2 O-O 12. Rc1 Nb4 13. Ne5 Nfd5 14. Nc3 c6 15. Ne4 f6 16. Nxd7 Qxd7 17. Nc5 Bxc5 18. Rxc5 f5 19. Ra5 Qc7 20. Ra1 Qd7 21. Ra5 Qc7 22. Ra1 Qd7 {½-½ (22) So,W (2780)-Duda,J (2737) chess.com INT 2018}) 7... Nd5 8. Bg5 f6 9. Bd2 {The position is equal.} Be7 $146 ({Predecessor:} 9... Nb6 10. Bc3 Nd5 11. Nbd2 b5 12. Qc2 b4 13. Bxb4 Bxb4 14. Qxc4 Bd7 {0-1 (24) Tago,S (1735)-Hildebrand,G (2354) ICCF email 2013}) 10. e4 Nb6 11. Bc3 O-O 12. Nbd2 Bb4 13. Qc2 Bxc3 14. Qxc3 e5 {[%cal Re5d4]} 15. d5 Na7 16. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Bd7 17. Qc2 Qe8 {[%cal Rd7a4]} 18. a5 Nbc8 $1 19. Nxc4 Nb5 20. Rfc1 Qh5 21. Qd1 (21. Na3 $5 {[%cal Ra3b5]}) 21... Bg4 22. Ne3 Ncd6 23. Nxg4 Qxg4 24. Ne1 Qg6 25. Ra4 Rae8 26. Nf3 Qh6 27. Qd2 Qh5 28. Re1 Re7 29. Raa1 f5 30. exf5 Rxf5 31. Nh4 Rff7 32. Qd1 Qh6 33. Nf3 (33. Ra4 $1 $11 {keeps the balance.}) 33... Qf6 $36 {[%mdl 2048] Strongly threatening ...e4. Black is in control.} 34. Qd2 $2 {[%mdl 8192] [#]} (34. h4 $17) 34... e4 $1 $19 35. Nh4 g5 36. Bh3 gxh4 {Black is clearly winning.} 37. Be6 Nd4 38. Bxf7+ Rxf7 {Accuracy: White = 48%, Black = 75%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.3"]
[White "Anton Guijarro, David"]
[Black "Eljanov, Pavel"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2694"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,83,18,12,20,0,2,0,0,0,0,0,14,0,0,-8,0,0,0,0,0,0,36,24,45,43,43,43,93,76,117,112,108,104,108,92,97,97,198,133,124,124,124,124,132,132,324,315,322,322,314,307,273,288,325,322,523,510,635,450,675,675,664,656,641,637,620,586,670,639,608,567]} 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 d4 5. O-O c5 6. e3 Nc6 7. exd4 cxd4 8. d3 Bd6 {A13: English Opening: 1...e6.} 9. Na3 O-O 10. Nc2 e5 {The position is equal.} 11. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Re8 12. Re1 Bg4 13. b5 Nb4 14. h3 Bxf3 15. Bxf3 Nxc2 16. Qxc2 Qc7 {[#]} 17. Bd2 $146 ({Predecessor:} 17. Bg2 Bb4 18. Re2 h6 19. Bb2 Re7 20. Qb3 Bc5 {½-½ (20) Sykora,J (2330)-Kostal,J (2354) ICCF email 2013}) 17... Bc5 18. Kg2 h6 19. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rad8 20. a5 e4 21. dxe4 d3 22. Qb3 $1 Nd7 23. e5 ({But not} 23. Qxd3 Ne5 $14) 23... Bd4 24. Rad1 Nc5 25. Qa3 Bxe5 {[#]} (25... g5 $16) 26. Bb4 (26. a6 $1 $18) 26... Bd4 $16 27. Rxe8+ Rxe8 28. Bxc5 Bxc5 29. Qxd3 b6 $2 {[#] This costs Black the game.} (29... Re7 $16 {was necessary.} 30. a6 bxa6) 30. a6 $1 $18 Qe5 31. h4 g6 32. Qd5 Qb2 33. Qd2 Qg7 34. Qf4 g5 $2 (34... Qf8 35. Rd7 Re7) 35. hxg5 {White is clearly winning.} hxg5 36. Qf5 Qe5 (36... Qg6 $142 37. Qd7 {[%mdl 64] Double Attack} Kf8) 37. Qxe5 Rxe5 38. Rd8+ Kg7 39. Ra8 Re7 40. g4 Kf6 41. Bb7 Ke5 42. Kf3 {Accuracy: White = 93%, Black = 61%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.4"]
[White "L'Ami, Erwin"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2606"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,60,13,8,9,9,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-2,11,14,19,0,9,9,9,9,11,15,22,0,3,0,8,9,11,10,6,3,14]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Qc2 Nbd7 9. Bf4 b6 10. cxd5 cxd5 {The position is equal.} 11. Rc1 {E08: Closed Catalan: Main Line: 7 Qc2} Bb7 12. Qb3 (12. Bc7 Qe8 13. Qb3 Rc8 14. Na3 Ba6 15. Nb5 Bxb5 16. Qxb5 Nc5 17. Qxe8 Rfxe8 18. Bf4 Na4 19. Rxc8 Rxc8 20. Rc1 Rxc1+ 21. Bxc1 {0-1 (50) Giri,A (2776)-So,W (2760) Kolkata 2019}) 12... Rc8 13. Na3 {[%cal Bb1a3,Ba3c2,Bc2b4][%mdl 32]} a6 14. Nc2 Nh5 $146 ({Predecessor:} 14... Rc4 15. Nd2 {½-½ (42) Grabuzova,T (2314)-Shuvalova,P (2439) Sochi 2019}) 15. Bd2 Nhf6 16. Nb4 Rxc1+ 17. Rxc1 Qa8 18. Nd3 Rc8 19. Nfe5 Rxc1+ 20. Bxc1 Qc8 21. Bg5 Bd8 22. Bf1 h6 (22... Nxe5 {looks sharper.} 23. Nxe5 Qc7 24. f3 Be7 25. Qd1 h6) 23. Nxd7 Nxd7 24. Bxd8 Qxd8 25. e3 a5 26. Nc1 Nf6 27. Bd3 Ne8 28. Ne2 Nd6 29. Nc3 Bc6 30. f3 h5 {Accuracy: White = 77%, Black = 67%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.5"]
[White "Smeets, Jan"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2585"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,84,5,0,7,20,-2,0,-4,0,0,0,0,24,22,30,8,28,23,25,19,35,43,35,39,41,29,46,22,15,26,22,19,32,35,29,-23,-20,-14,-20,-43,16,18,18,0,0,0,15,13,74,51,39,44,134,41,36,31,127,107,124,125,148,131,135,45,38,31,46,0,0,0,0,0,6,0,32]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Nxc6 Bc5 6. Qf3 bxc6 7. Nc3 {C45: Scotch Game} d6 8. Bd3 (8. Qg3 {seems wilder.} h5 9. Be3 h4 10. Qf3 Bd4 11. Bxd4 Qxd4 12. Qd3) (8. Qg3 h5 9. h4 Bd4 10. Bg5 Qe5 11. Qxe5+ Bxe5 12. O-O-O Bxc3 13. bxc3 Be6 14. Rd4 f6 {½-½ (71) Nepomniachtchi,I (2751)-Le,Q (2739) Saint Louis 2017}) 8... Bd4 9. Bd2 $146 ({Predecessor:} 9. Qxf6 Nxf6 10. Ne2 Bb6 11. h3 a5 12. Bd2 Nd7 13. Bc3 O-O 14. Bd4 Nc5 {0-1 (59) Musialkiewicz,J (2250)-Brzeski,M (2353) Poland 2015}) 9... Rb8 10. Qxf6 Nxf6 11. b3 O-O 12. f3 Nd7 13. O-O-O Ne5 14. Be2 f5 15. Rhf1 Re8 16. exf5 Bxf5 17. g4 Bd7 18. h3 Ng6 19. Bc4+ d5 20. Bd3 Ne5 21. Ba6 Ng6 22. Ne2 Bc5 23. Be1 (23. f4 $142) 23... Rb6 $11 24. Bd3 Ne5 25. Nf4 Be3+ (25... Rf8 $15 26. Bd2 Rbb8) 26. Bd2 Bxd2+ 27. Kxd2 Rb4 28. Ng2 c5 29. Be2 Bc6 (29... h5 $11 {remains equal.}) 30. Rde1 a5 31. f4 Ng6 {[#]} ({Black should play} 31... Nf7 $14) 32. Bd3 (32. f5 $1 $16 {[%cal Rf5g6]} Ne5 33. Nf4) 32... Rxe1 $14 33. Rxe1 {Strongly threatening Re6.} Kf7 (33... Nxf4 $14 34. Nxf4 Rxf4) 34. a3 $16 Rb8 35. f5 Ne7 36. Nf4 a4 37. bxa4 ({Better is} 37. Kc3 $16) 37... c4 $14 38. Bf1 Bxa4 39. Ne6 Rb2 {The position is equal.} 40. Rc1 Ra2 41. Kc3 Rxa3+ 42. Kd4 Ra2 {Accuracy: White = 65%, Black = 36%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.6"]
[White "Ganguly, Surya Shekhar"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2636"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,47,17,5,33,23,26,30,24,24,25,8,22,0,0,-12,-6,-4,-9,-50,-53,-41,-60,-65,0,-53,0,-64,0,0]} 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 d6 10. a3 Qd7 11. Nc3 Nd8 {C88: Closed Ruy Lopez: Anti-Marshall Systems} (11... Rfe8 12. Nd5 Nxd5 13. exd5 Na7 14. d4 exd4 15. Qxd4 c5 16. dxc6 Nxc6 17. Qd3 Bf6 18. Bd2 Ne5 19. Rxe5 Rxe5 20. Nxe5 Bxe5 {½-½ (47) Nakamura,H (2743)-Ding,L (2805) Saint Louis 2019}) 12. d4 exd4 13. Nxd4 Re8 {White has an edge.} 14. Nf5 Ne6 15. Qf3 c5 16. Nd5 Nxd5 17. exd5 c4 $146 {[#] ...Bf6 is the strong threat.} ({Predecessor:} 17... Nd4 18. Nxd4 cxd4 19. Bf4 {1-0 (54) Fedorchuk,S (2599)-Stern,R (2465) Germany 2006}) 18. dxe6 fxe6 19. Nh6+ gxh6 20. Qg4+ Kf7 {aiming for ...Rg8.} 21. Qh5+ (21. Bxh6 $2 Rg8 $19) 21... Kg8 {[#] Hoping for ...Kh8.} 22. Qg4+ $1 Kf7 {Threatens to win with ...Rg8.} (22... Kh8 $5 {[%cal Re8g8]} 23. Qd4+ (23. Bxh6 $2 Rg8 $19) 23... e5 24. Rxe5 {[%mdl 64] Pin} Bf6 {[%mdl 64] Pin} 25. Rxe8+ {[%mdl 64] Discovered Attack} Kg7 $11) 23. Qh5+ $1 (23. Bxh6 $2 Rg8 $19) 23... Kg8 (23... Kg7 $1 $15 24. Qg4+ (24. Bxh6+ Kh8 $17) (24. Ba2 Rg8 $17) 24... Kh8 25. Qd4+ (25. Bxh6 $2 Rg8 $19) 25... Kg8 26. Qg4+ (26. Bxh6 Bf8 $17)) 24. Qg4+ $1 {Accuracy: White = 77%, Black = 70%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.22"]
[Round "10.7"]
[White "Mamedov, Rauf"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2659"]
[BlackElo "2523"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,104,10,0,9,0,0,0,0,7,10,-8,-15,-15,-3,-16,-8,-10,-4,-21,0,0,0,0,0,0,0,0,0,0,0,0,0,-41,0,-18,-6,-44,-18,-7,53,-8,-14,-11,-7,-4,-13,-138,-144,-164,-156,-150,-151,-153,-71,-117,-115,-122,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 5. c4 O-O 6. b3 d4 7. e3 c5 {A14: English Opening: 1...e6 with b3 by White} 8. exd4 (8. Ne5 Qc7 9. f4 Nfd7 10. Nf3 Nc6 11. Na3 a6 12. exd4 cxd4 13. d3 b5 14. Bb2 Qb6 15. Kh1 {½-½ (30) Ding,L (2809)-Giri,A (2797) Shenzhen 2019}) 8... cxd4 9. Ne5 Qc7 10. Re1 Nfd7 $146 ({Predecessor:} 10... Nc6 11. Qe2 Nxe5 12. Qxe5 Qxe5 13. Rxe5 Nd7 14. Re2 a5 15. Bb2 Bf6 16. d3 Nc5 17. Rd2 e5 {Poetz,F (2414)-Dunlop,G (2503) ICCF email 2016}) 11. Nxd7 (11. Nd3 {keeps more tension.} Rd8 12. Ba3 Bf6 13. Qe2 Nc6 14. Bb2) 11... Bxd7 12. Bb2 Nc6 13. d3 e5 14. a3 a5 15. Nd2 f5 16. Qh5 Rae8 17. Bd5+ Kh8 18. Bf7 Rd8 19. Bg6 {[%csl Gg6][%cal Rh5h7] [#]} h6 20. Nf3 Be8 21. Bxe8 Rdxe8 22. Bc1 Bd8 23. Bd2 e4 24. b4 Qd7 25. b5 Nb8 (25... exf3 $11 26. bxc6 Qxc6) 26. dxe4 (26. Bf4 $1 $14 exf3 27. Bxb8) 26... fxe4 $11 27. Ne5 Qf5 28. Qxf5 $1 Rxf5 29. Nd3 (29. Rxe4 $11 Rfxe5 30. Rxe5 Rxe5 31. Bf4) 29... Nd7 $17 30. Rad1 Bb6 31. Bc1 g5 32. Bb2 {[#]} Kh7 (32... Kg8 $142 $1 33. g4 Rff8) 33. c5 Nxc5 34. Nxc5 Rxc5 (34... Bxc5 $17 35. Bxd4 Bxa3) 35. Bxd4 $11 {The position is equal.} Rxb5 36. a4 Rb3 37. Bxb6 Rxb6 {[%mdl 4096] Endgame KRR-KRR} 38. Rd5 Rb2 39. Rxa5 Kg6 40. Rd5 Re6 41. Kf1 e3 42. Re2 Rxe2 43. Kxe2 exf2+ 44. Kxf2 {KR-KR} g4 45. a5 h5 46. Rb5 Re7 47. Kf1 Kh6 48. Kg1 Re1+ 49. Kf2 Re7 50. Kg2 Re2+ 51. Kg1 Re1+ 52. Kg2 Re2+ {Accuracy: White = 62%, Black = 68%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.1"]
[White "Keymer, Vincent"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2527"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,79,35,34,45,41,44,35,50,47,75,45,84,65,70,60,78,72,110,11,22,16,14,8,16,15,85,87,77,77,85,82,97,37,62,52,58,31,66,31,32,32,35,0,0,0,0,0,0,0,20,20,20,20,27,0,0,0,0,0,0,0,20,0]} 1. Nf3 g6 2. e4 c5 3. c4 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 O-O 10. Qd3 a5 {B36: Sicilian: Maroczy Bind: Gurgenidze System} (10... Be6 11. O-O a6 12. Rac1 b5 13. cxb5 axb5 14. Nxb5 Rxa2 15. Bd4 Bd7 16. Qb3 Ra8 17. e5 Bxb5 18. exf6 Bxf6 19. Bxf6 Bxe2 20. Rfe1 exf6 {½-½ (20) Idani,P (2586)-Zvjaginsev,V (2644) Qingdao 2019}) 11. O-O a4 12. Bd4 Be6 {White is slightly better.} 13. f4 Qa5 14. Rab1 Bd7 15. b4 $146 ({Predecessor:} 15. e5 Bf5 16. exf6 Bxd3 17. fxg7 Bxb1 18. gxf8=Q+ Kxf8 19. Rxb1 {1-0 (65) Ivic,V (2345)-Nguyen,P (2453) Zalakaros 2017}) 15... axb3 $1 16. axb3 Bc6 17. b4 Qa3 18. e5 (18. b5 $16) 18... dxe5 $11 19. fxe5 Ne4 $1 20. Nxe4 {[#] Black must now prevent Rb3.} Qxd3 21. Bxd3 {Hoping for Nf2.} Rad8 (21... Rfd8 $1 $11) 22. Nd6 $16 exd6 23. Bb6 Bxe5 24. Bxd8 Rxd8 {[#]} 25. Rfe1 (25. b5 $1 $16 {[%cal Rb5c6]} Bd7 26. Be4) 25... Re8 26. Kh1 b6 27. Rbc1 Kg7 28. Be4 Bxe4 29. Rxe4 $14 {[%mdl 4096] Endgame KRR-KRB} Ra8 30. c5 Bb2 31. Rf1 dxc5 32. bxc5 bxc5 33. Re7 Rf8 34. Rc7 Bd4 35. g4 g5 36. Re1 Kg6 {The position is equal.} 37. Rc6+ Kg7 38. Rc7 Ra8 39. Rf1 Rf8 40. Re1 {Accuracy: White = 43%, Black = 59%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.2"]
[White "Van Foreest, Lucas"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2523"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,40,18,26,0,0,-34,-21,-40,-37,-32,-47,-36,12,6,40,0,0,-67,-47,-40,0,-98,-101,-437,-442,-521,-520,-634,-593,-688,-674,-725,-697]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd2 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} e5 7. Nf5 $146 ({Predecessor:} 7. Nb3 Be7 8. Bd3 O-O 9. O-O Nc6 10. Re1 Be6 11. f4 exf4 12. Bxf4 Ne5 13. Bxe5 dxe5 {0-1 (31) Dos Santos,F-Da Silva,W (1906) Barbacena 2018}) 7... d5 8. Qf3 {[%cal Re4d5] The position is equal.} d4 9. Nd5 Nxd5 10. exd5 Qf6 11. Bd3 Nd7 12. O-O {Rfe1 is the strong threat.} Nc5 $36 {[%mdl 2048] Black is more active.} 13. Nxd4 ({White should play} 13. Ng3 $11) 13... exd4 $15 (13... Nxd3 $6 14. cxd3 Be7 15. Rfe1 $16) 14. Rfe1+ $1 Kd7 {And now ...Qxf3 would win.} (14... Kd8 $5 {[%cal Rf6f3]} 15. Ba5+ b6 16. Qxf6+ gxf6 17. Bxb6+ Kd7 $15) 15. Bf5+ {[#]} (15. Qh5 $1 $11 g6 16. Qg4+ (16. Qe2 Kc7 $17) 16... Kc7 17. Qg3+ Kb6 18. Bf4) 15... Kc7 $1 $17 ({Reject} 15... Kd8 $6 16. Ba5+ b6 17. d6 $11) 16. Ba5+ $2 {[%mdl 8192]} (16. Re8 $17 Qxf5 17. Qxf5 Bxf5 18. Rxa8) 16... b6 $19 {Black is clearly winning.} 17. d6+ Bxd6 18. Qxa8 {Strongly threatening Qa7+.} Qxf5 ({Not} 18... bxa5 19. Bxc8 Rxc8 20. Qd5 $17) 19. Qa7+ {[#]} Bb7 $1 20. Qxb6+ Kd7 {Accuracy: White = 16%, Black = 78%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.3"]
[White "Nihal Sarin"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2618"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,96,26,47,39,47,41,50,16,15,20,13,9,35,33,19,10,20,3,10,27,41,41,39,36,39,36,47,23,41,19,26,12,37,36,33,0,0,0,0,-29,-37,-33,-33,-34,-25,-50,-35,-50,-17,-29,-32,-42,-39,-35,-14,-15,-15,-15,-15,-15,-2,-15,-8,-33,-18,-18,-5,-33,-33,-33,-33,-33,-7,-11,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Nbd2 {[%cal Bb1d2,Bd2e4,Be4g3][%mdl 32]} Nd7 9. Re1 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines} (9. Bc2 Nb6 10. a4 a5 11. Nc4 Nxc4 12. dxc4 Kh8 13. Re1 Be6 14. b3 Qd7 15. Ng5 Bxg5 16. Bxg5 b6 {½-½ (41) L'Ami,E (2633)-Sokolov,I (2584) Amsterdam 2019}) 9... Nb6 10. Bb3 Kh8 11. h3 {White is slightly better.} f5 12. exf5 Bxf5 13. Ne4 Qd7 14. Be3 $146 ({Predecessor:} 14. Ng3 Bg6 15. d4 exd4 16. Be6 Qd8 17. Nxd4 Nxd4 18. Qxd4 {½-½ (35) Karabayeva,Z (2029)-Bezgodova,M (2172) Kocaeli 2013}) 14... Rae8 15. Ng3 Bg6 16. Bxb6 cxb6 17. d4 Bf6 18. dxe5 Nxe5 19. Nxe5 Bxe5 20. Qd2 b5 21. Rad1 Qc7 22. Nf1 Qc5 23. Re3 Bf4 24. Rxe8 Bxe8 25. Qd5 (25. Qe2 {keeps more tension.} Bh5 26. g4 Bg6 27. Bd5 Qc7 28. Ng3) 25... Bc6 $36 {[%mdl 2048] Black is more active.} 26. Qxc5 dxc5 27. Ne3 c4 28. Bc2 g6 29. a3 Kg7 30. Rd4 Bb8 31. Rd2 Ba7 32. Ng4 Re8 {[#] ( -> ...Re1+)} 33. Kf1 $1 h5 34. Nh2 $1 Bb8 35. Nf3 Bf4 36. Rd1 $1 Bxf3 37. gxf3 $11 {[%mdl 4096] Endgame KRB-KRB} Kf6 38. Be4 Re7 39. Ke2 Kg5 40. Kf1 b6 41. Rd5+ Kf6 42. Rd1 h4 43. Bc6 g5 44. Bd7 {The position is equal.} Ke5 45. Bc8 Ra7 46. Ke2 a5 47. Bd7 {[#]} b4 $1 {[%mdl 512]} 48. Bb5 (48. axb4 axb4) 48... bxc3 {Accuracy: White = 67%, Black = 44%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.4"]
[White "Eljanov, Pavel"]
[Black "Smeets, Jan"]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "2650"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "158"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,158,0,20,14,12,9,23,20,20,0,25,14,26,0,0,-30,-34,-37,39,38,39,41,30,41,39,31,35,35,39,31,29,31,34,39,41,22,22,17,47,39,48,41,39,45,45,16,39,39,81,83,86,40,82,76,104,110,137,131,218,215,217,216,216,222,238,235,229,202,204,210,210,210,204,197,286,175,198,189,211,205,214,221,220,214,328,327,348,330,217,186,177,179,175,152,272,272,283,279,1042,1036,1020,1021,992,971,847,283,759,751,739,706,675,273,519,610,565,0,497,0,457,428,291,257,257,193,186,95,95,95,96,96,96,76,76,76,76,8,8,8,8,8,8,8,8,0,8,8,8]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c6 7. Qb3 a5 8. Rd1 {D78: Fianchetto Grünfeld: 6 0-0 c6} a4 9. Qb4 Qa5 $146 ({Predecessor:} 9... dxc4 10. Qxc4 Be6 11. Qb4 Qa5 12. Qxa5 Rxa5 13. Nc3 b5 14. Ng5 Bc4 15. Bd2 b4 16. Nxa4 Rxa4 {1-0 (73) Inarkiev,E (2663)-Motylev,A (2640) Moscow 2019}) 10. Qxa5 {White has an edge.} Rxa5 11. Na3 Be6 12. Bd2 Ra6 13. Bb4 dxc4 14. Bxe7 Re8 15. Bb4 Rb6 (15... b5 $15) 16. Bc3 $1 $14 Ne4 17. Nd2 Nxc3 18. bxc3 Rb2 {Black wants to play ...b5.} 19. Ndxc4 Rxe2 20. Bf3 Bxc4 $1 21. Nxc4 R2e7 22. Rab1 {aiming for Nd6.} b5 $1 {[%cal Rb5c4]} 23. Ne3 Rc7 24. c4 bxc4 25. Nxc4 Nd7 26. Rbc1 Bf8 27. Kg2 Rec8 28. Rc2 $36 {[%mdl 2048] White has good play.} Kg7 29. Re1 h5 30. Rec1 Be7 31. Ne3 {Nd5! is the strong threat.} Ba3 32. Rb1 Nf8 33. Rc4 Be7 34. Rxa4 Rd7 35. Rc4 Rcd8 (35... Bf6 $16) 36. Nc2 $1 $18 ({Don't take} 36. Rxc6 $6 Rxd4 37. Bxh5 Bg5 $16) 36... Ne6 {[%cal Re6d4]} 37. Bxc6 Ra7 38. a4 Bf6 39. d5 Nc7 40. Ne3 Ne8 41. Rcb4 Nd6 42. Nc4 Nxc4 43. Rxc4 Be7 (43... Be5 $142 44. f4 Bd6) 44. Rc3 Rc8 45. Rcb3 Rcc7 46. f4 Bd6 47. Kf3 Re7 48. Rb7 Rexb7 (48... Kf8 {was worth a try.} 49. R7b6 Bc5) 49. Rxb7 ({Not} 49. Bxb7 Rxa4 50. Rb6 Ra3+ 51. Ke2 Bc5 $14) 49... Rxb7 50. Bxb7 {[%mdl 4096] Endgame KB-KB} Bc7 51. Ba6 Kf6 52. Bd3 Ke7 53. Ke4 f5+ (53... Kd6 $16 {was necessary.} 54. f5 Bd8 55. fxg6 fxg6) 54. Kf3 Kd6 55. Bb5 Ke7 $2 (55... h4 56. gxh4 Ke7) 56. h4 Kd8 57. Ke2 Ke7 58. Bc6 Kd8 59. Kd2 $2 (59. Kf2 Ke7 60. Bb5) 59... Ke7 $2 (59... Ba5+ 60. Ke3 Bb6+ 61. Kf3 Bc7) 60. Ke3 Bb6+ {[#]} 61. Ke2 $1 Bc7 62. Bb7 (62. Bb5 $142 Kd8 63. Bc6) 62... Kd8 $2 (62... Ba5 63. Bc6 Bb4) 63. Ba6 Kd7 64. Bb5+ Ke7 $1 65. Bc6 Kd8 $1 {If only Black now had time for ...Ke7....} 66. Kd3 Ke7 67. Bb7 Kd7 68. Kd4 Kd6 {[#]} 69. Bc6 (69. Ke3 $1 $18) 69... Bb6+ $16 70. Kc4 Bf2 71. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Kc7 72. Kb5 Bxg3 73. a6 {a7 would kill now.} Kb8 74. d6 (74. Be8 $16) 74... Bxf4 $11 {The position is equal.} 75. Kc5 Bg3 76. Be8 Ka7 77. d7 Bxh4 78. Kb5 Bd8 79. Bxg6 h4 {Accuracy: White = 58%, Black = 54%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.5"]
[White "Smirnov, Anton"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[ECO "D24"]
[WhiteElo "2604"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,122,30,14,0,-4,0,0,-13,4,0,0,0,0,0,0,-25,0,-16,-4,-16,-15,-24,-36,-28,-15,-19,-20,-49,-29,-40,-30,-16,-31,-10,-12,-46,-23,-26,-6,-43,-44,-49,-33,-34,-10,-65,-10,-14,0,-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,-8,-14,-46,-91,-114,-97,-112,-121,-132,-132,-167,-154,-384,-377,-29951,-29953,-29952,-29952,-29958,-29956,-29961,-29963,-29959,-29961,-29962,-29962,-29965,-29965,-29968,-29969]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 Bb4 6. Bxc4 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} Nxe4 7. O-O Nxc3 8. bxc3 {The position is equal.} Bd6 9. Qe2 Nd7 10. Re1 O-O 11. Bd3 Re8 12. Bg5 {[#]} Be7 $146 (12... f6 {is interesting.} 13. Bh4 Nf8 14. Nd2 b6 15. Ne4 Bd7) ({Predecessor:} 12... f6 13. Bh4 Nf8 14. Rab1 c6 15. Nd2 b6 16. Ne4 Be7 17. Bg3 Bb7 18. a4 a6 {0-1 (69) Cuenca Jimenez,J (2490)-Salgado Lopez,I (2627) Las Palmas 2017}) 13. h4 (13. Bf4 {looks sharper.} c5 14. Bc2 cxd4 15. Rad1 Nf6 16. Rxd4 Qa5 17. Be5) 13... Nf8 14. Bxe7 Qxe7 15. Rab1 Rb8 16. Be4 c5 17. Ne5 Nd7 18. h5 cxd4 19. cxd4 Nxe5 20. dxe5 b6 21. h6 {Threatening hxg7.} g6 22. Qd2 Rd8 23. Qf4 Bb7 24. Rbc1 Rd4 25. f3 Bxe4 26. fxe4 Rbd8 27. Rf1 (27. Rc6 $11) 27... Kf8 (27... Qf8 $15) 28. Kh2 $11 Ke8 29. Rc6 Rd1 {Played: Rd4-d2} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.6"]
[White "Grandelius, Nils"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2673"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,73,6,1,0,1,18,8,7,3,19,26,34,35,16,31,32,25,54,62,71,34,96,92,81,82,106,87,135,73,65,54,59,62,56,69,88,46,26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 d4 7. e3 c5 {A14: English Opening: 1...e6 with b3 by White} 8. Ne5 Nfd7 9. exd4 cxd4 10. Nxd7 Qxd7 11. Ba3 $146 ({Predecessor:} 11. d3 Nc6 12. Ba3 Bxa3 13. Nxa3 b6 14. f4 Bb7 15. Nc2 {½-½ (66) Anton Guijarro,D (2686)-Cuenca Jimenez,J (2523) Marbella 2019}) 11... Na6 12. Bxe7 Qxe7 13. d3 Nc5 14. Nd2 e5 15. Ne4 Ne6 16. Qe2 f6 ({Black should play} 16... Bd7 $14) 17. f4 $16 exf4 18. gxf4 Bd7 19. Rae1 Rae8 20. Qf2 (20. c5 $142) 20... Bc6 21. f5 Nc5 22. Qxd4 Nxe4 23. Bxe4 Qa3 24. Bd5+ Kh8 25. Rxe8 Rxe8 {The position is equal.} 26. Bxc6 bxc6 $11 {[%mdl 4096] Endgame KQR-KQR} 27. Qd7 Rg8 28. Qxc6 {Hoping for Qg2.} Qxa2 29. Qa4 Qe2 {[#] ( -> ...g6)} 30. Qxa7 Qxd3 (30... g6 $5 31. Qf2 $8 Qxd3 $11) 31. Qb7 g6 32. Qf3 gxf5+ 33. Kh1 Qc2 34. Rf2 Qc1+ 35. Rf1 Qc2 36. Rf2 Qc1+ 37. Rf1 {Accuracy: White = 68%, Black = 55%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.24"]
[Round "11.7"]
[White "Warmerdam, Max"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2498"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,54,0,0,9,10,20,17,16,7,19,0,0,0,0,0,0,0,0,0,0,0,0,-14,-21,-15,-14,-78,-32,-42,-19,-29,0,0,7,5,7,7,7,8,21]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4 g6 7. Nc3 Bg7 8. h3 O-O 9. O-O h6 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines} (9... Nd7 10. Bg5 f6 11. Be3 f5 12. exf5 gxf5 13. Bg5 Nf6 14. Re1 Ne7 15. c5 Kh8 16. cxd6 cxd6 17. Qd2 {1-0 (42) Alekseenko,K (2594)-Smeets,J (2608) chess.com INT 2018}) 10. Be3 Nd7 11. d4 exd4 12. Nxd4 Nce5 $146 ({Predecessor:} 12... Nde5 13. Rc1 Nxc4 14. Nxc6 Nxe3 15. fxe3 bxc6 16. Bxc6 Rb8 17. b3 {1-0 (63) Olsarova,T (2269)-Motycakova,M (2115) Liptov 2010}) 13. Qe2 c5 14. Nc2 Nb6 15. Bb3 Be6 $36 {[%cal Re5c4][%mdl 2048] Black has good play.} 16. Na3 f5 17. exf5 Bxf5 18. Rad1 {And now Bxc5! would win.} Qe7 19. Bf4 Bg4 20. hxg4 Rxf4 21. f3 (21. Nc2 $11 {keeps the balance.}) 21... Re8 22. Nc2 Qf8 {[#] White must now prevent ...Nxf3+!} 23. Qd2 Nexc4 24. Qxd6 $1 {The position is equal.} Kh7 25. Qxf8 Rexf8 26. Nd5 Nxd5 27. Rxd5 {White wants to play g3.} b5 {Accuracy: White = 67%, Black = 57%.} ({Much weaker is} 27... Bxb2 $6 28. g3 $16) 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.1"]
[White "Mamedov, Rauf"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2659"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,98,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,7,0,5,5,-5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,12,10,0,17,0,0,0,35,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 ({Predecessor:} 4... Nc6 5. d4 cxd4 6. cxd4 {½-½ (60) Godena,M (2488)-Kuljasevic,D (2549) Balatonszarszo 2017}) 5. d4 cxd4 6. cxd4 Nc6 7. Bc4 dxe5 8. dxe5 Ndb4 9. Qb3 e6 {B22: Sicilian: 2 c3} 10. O-O Na5 11. Bb5+ $146 (11. Qa4+ Bd7 {0-1 (49) Potapov,P (2516)-Demchenko,A (2679) St Petersburg 2018}) 11... Bd7 12. Qa4 $1 Bxb5 13. Qxb5+ Nac6 14. Nc3 a6 15. Qc4 Qd3 16. Qg4 Qg6 17. Qxg6 $1 hxg6 18. Rd1 $1 Be7 19. Bf4 Rd8 20. Rxd8+ Bxd8 21. Rd1 Ne7 22. Bg5 Bc7 23. g3 Nbd5 (23... Ned5 {is interesting.} 24. h4 O-O 25. Nxd5 Nxd5 26. Rc1 f6) 24. Kg2 Nxc3 25. bxc3 b5 26. c4 bxc4 27. Rc1 Nd5 {With the idea ...c3.} 28. Rxc4 Kd7 29. Ra4 a5 30. Bd2 Rb8 31. h4 Rb5 32. Nd4 Rb2 33. Bxa5 Bxe5 34. Nb3 Bd6 35. Bd2 Bc7 36. Ba5 Bxa5 37. Nxa5 $11 {[%mdl 4096] Endgame KRN-KRN} Ke7 38. Nc4 Rb7 $1 39. Ne5 Kf6 (39... Kd6 $5 {[%cal Rd6e5]} 40. f4 Ne3+ 41. Kf2 Nf5 $11) 40. Ng4+ Ke7 41. Ne5 Kf6 42. Nf3 Ke7 {The position is equal.} 43. Ng5 Nc3 44. Ra6 e5 45. Kf3 Rd7 46. Ra3 Nb1 47. Ra8 Nc3 48. Ra3 Nb1 49. Ra6 Nc3 {Accuracy: White = 79%, Black = 82%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.2"]
[White "Keymer, Vincent"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "D94"]
[WhiteElo "2527"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,96,38,12,32,32,26,25,27,25,21,23,33,8,46,22,28,31,57,37,50,0,0,0,0,0,0,-8,0,-24,-27,-23,-26,-25,-14,-10,0,-17,2,0,0,-9,0,0,0,0,0,-14,0,0,0,-12,0,0,35,0,18,0,0,0,0,0,0,0,0,-58,-51,-78,-61,-30,-26,-46,-68,-83,-50,-76,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. e3 g6 5. Be2 Bg7 6. O-O O-O 7. Nc3 Ne4 8. Qb3 {[%cal Rc4d5]} dxc4 {D94: Grünfeld: 4 Nf3 Bg7 5 e3} 9. Qxc4 (9. Bxc4 Nd6 10. Be2 Be6 11. Qc2 Nd7 12. e4 Bg4 13. Rd1 Rc8 14. Bg5 h6 15. Bh4 Re8 16. h3 Bxf3 17. Bxf3 {½-½ (76) Bocharov,D (2524)-Yu,Y (2738) Moscow 2019}) 9... Nd6 10. Qd3 $146 ({Predecessor:} 10. Qa4 Nd7 11. e4 c5 12. Be3 Nb6 13. Qb3 cxd4 14. Nxd4 Bd7 15. Rfd1 Rc8 16. Ndb5 {1-0 (46) Aguilar,A (2233)-Cubas,J (2550) Cochabamba 2013}) 10... Bg4 {White has an edge.} 11. e4 Nd7 12. Be3 Rc8 13. Rad1 Qa5 14. Nd2 Bxe2 15. Qxe2 Rfe8 16. Nb3 Qb4 17. Nc1 Qc4 18. Bf4 Rcd8 19. Qxc4 Nxc4 20. b3 e5 21. Bg5 f6 {[#] aiming for ...Nb2.} 22. bxc4 {And now Be3 would win.} fxg5 23. d5 $1 Bf8 24. Nb3 Bb4 25. Rd3 Nc5 26. Nxc5 Bxc5 27. g3 h5 28. Kg2 Rf8 29. h3 Kg7 30. f3 Rf6 31. Rb1 b6 32. g4 h4 33. Rbd1 Kf8 34. Kf1 Ke8 35. Ne2 Ke7 36. Nc1 cxd5 37. cxd5 Rc8 38. Rc3 Rff8 39. Nb3 (39. Ne2 $11) 39... Ba3 $1 $15 40. Rcd3 Rc2 41. R1d2 $1 {[%cal Rd2c2]} Rfc8 42. Rxc2 $1 Rxc2 $11 {[%mdl 4096] Endgame KRB-KRN} 43. Rd2 Rc3 44. Ke2 {[#]} a5 (44... Bb4 $1 $17) 45. Rd3 {The position is equal.} Rc2+ 46. Rd2 Rc3 47. Rd3 Rc2+ 48. Rd2 Rc3 {Accuracy: White = 59%, Black = 41%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.3"]
[White "Smeets, Jan"]
[Black "Smirnov, Anton"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2585"]
[BlackElo "2604"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,31,10,10,15,19,22,0,24,12,12,16,29,-11,0,7,2,6]} 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bg5 h6 7. Nxf6+ Nxf6 8. Bxf6 Qxf6 9. Bb5+ c6 {C10: French with 3 Nc3: Unusual Black 3rd moves and 3...dxe4} 10. Bd3 Bd7 11. Qe2 Bd6 12. O-O-O O-O-O 13. g3 $146 ({Predecessor:} 13. Kb1 Kb8 14. Be4 e5 15. dxe5 Bxe5 16. Bxc6 Bxc6 17. Nxe5 Bxg2 {0-1 (26) Naiditsch,A (2657)-Nisipeanu,L (2668) Bled 2016}) 13... Kb8 14. Be4 e5 15. dxe5 Bxe5 16. Nxe5 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.4"]
[White "Anton Guijarro, David"]
[Black "Warmerdam, Max"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2694"]
[BlackElo "2498"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,70,16,21,21,26,18,12,-17,-19,-19,-10,-20,-17,-25,-17,-39,-37,-27,-23,-45,-42,-49,-43,-86,-19,-36,-16,-18,23,17,25,-9,-10,-37,-37,-59,-56,-76,-69,-60,-47,-63,-47,-52,-37,-201,-231,-216,-242,-235,-233,-194,-121,-385,-384,-377,-379]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. d3 Bd6 8. a4 O-O 9. Nc3 {A13: English Opening: 1...e6} b6 10. Nb5 Ba6 11. Qh4 $146 {The position is equal.} ({Predecessor:} 11. O-O Rc8 12. Qb3 Bb8 13. Nd2 Nd5 14. Nc4 N7f6 15. Bd2 Bb7 16. e4 Ne7 {½-½ (64) Jakovenko,D (2748)-Eljanov,P (2717) Baku 2015}) 11... Be7 12. O-O Bb7 13. Rd1 a6 14. Nc3 Rc8 15. Qc4 Nd5 16. Nxd5 exd5 17. Qf4 Bf6 18. d4 Re8 19. Be3 c4 (19... Re4 $17 20. Qf5 g6) 20. Qf5 $11 Bc6 21. h4 b5 22. axb5 axb5 23. Qc2 b4 24. Ng5 Nf8 25. Ra7 Rxe3 {[%mdl 64] [#] Remove Defender} 26. fxe3 Bxg5 27. hxg5 Qxg5 {[%mdl 64] Double Attack} 28. Rf1 Bd7 $1 29. Rf3 g6 30. e4 $2 {[#]} (30. Rb7 $15) 30... dxe4 $1 $19 31. Qxe4 c3 32. bxc3 bxc3 {Strongly threatening ...c2.} 33. Qc2 Bf5 ({Black should play} 33... Qd2 $19 34. Ra2 (34. Qxd2 $2 cxd2 35. Rf1 Rc1 $19) 34... Qxd4+ 35. Kh2 Bf5) 34. Qb3 $2 {[%mdl 8192]} (34. e4 $17 Bxe4 35. Qxe4) 34... Be6 35. Qc2 Qd2 {Accuracy: White = 39%, Black = 80%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.5"]
[White "Ganguly, Surya Shekhar"]
[Black "Eljanov, Pavel"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2636"]
[BlackElo "2650"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,80,15,13,13,24,26,18,17,22,16,24,17,19,13,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-16,-16,-12,-12,-114,-45,-65,-24,-69,-65,-55,0,0,0,-59,0,-92,-97,-171,-79,-237,-219,-962,-954,-931,-934,-1004,-1010,-971,-948]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc7 7. h3 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} Bd7 (7... Bh5 8. g4 Bg6 9. Bxg6 hxg6 10. g5 Nfd7 11. Qxd5 Nc6 12. Nf3 e5 13. dxe5 Ndxe5 14. Bf4 Bd6 15. Bxe5 Nxe5 16. Nxe5 Bxe5 {½-½ (26) Safarli,E (2601)-Postny,E (2605) Moscow 2019}) 8. Nf3 e6 9. O-O {The position is equal.} Bd6 10. Re1 Bc6 11. Qd1 Nbd7 12. Qe2 O-O 13. Nbd2 $146 {[%cal Bb1d2,Bd2f3,Bf3g5,Bg5e6][%mdl 32]} ({Predecessor:} 13. Ne5 Bxe5 14. dxe5 Ne4 {½-½ (41) Steinkellner,P (2304)-Tyulenko,Y (2452) ICCF email 2013}) 13... Nh5 14. Bxh7+ Kxh7 15. Ng5+ {[%mdl 64] Discovered Attack} Kg6 {White must now prevent ...Nf4.} 16. Ndf3 {Nh4+ would kill now.} Nf4 17. Qc2+ Kf6 $1 {[%cal Rf6e7]} 18. g3 Ng6 19. Nxf7 Kxf7 20. Ng5+ {[%mdl 64] Double Attack} Kg8 {...Rf6 is the strong threat.} 21. Qxg6 {[%csl Gg5][%cal Rg6h7]} Nf6 {Strongly threatening ...Bxg3!} 22. Nxe6 {[%mdl 64] Double Attack} Qd7 23. Bh6 $1 {[%cal Rh6g7]} (23. Nxf8 Rxf8 24. Bf4 Qxh3 $17) 23... Ne4 24. Rxe4 $1 dxe4 25. Ng5 $1 {[%csl Gg5][%cal Rg6h7]} Rf7 $1 26. Qh7+ Kf8 27. Nxf7 Qxf7 28. d5 (28. Qh8+ $11 {remains equal.} Qg8 29. Bxg7+ Ke7 30. Qxg8 (30. Qh6 e3 $11) 30... Rxg8 31. Bh6) 28... Qxd5 (28... Bxd5 $17 29. Qh8+ Qg8 30. Bxg7+ Ke8) 29. Qxg7+ $15 Ke8 {Threatens to win with ...e3!} 30. Qg6+ Kd7 $1 {And now ...Rg8 would win.} 31. Qg7+ Ke8 (31... Kc8 $1 $15 32. c4 (32. Qh8+ Kc7 $17) 32... Qh5) 32. Qg6+ ({White should try} 32. Qh8+ $11 Kd7 33. Qh7+ (33. Qxa8 e3 34. Qd8+ {[%mdl 64] Decoy} Kxd8 35. Bg5+ Kc7 36. Bd8+ Kxd8 37. Kf1 Qf3 38. Ke1 Qxf2+ {[%mdl 64] Double Attack} 39. Kd1 Qd2#) 33... Be7 34. c4 $1 {[%mdl 512]}) 32... Kd7 {Hoping for ...Rg8.} 33. Qg7+ Be7 ({Better is} 33... Kc8 $1 $15 34. Be3 (34. Qh8+ Kc7 $17) 34... b6) 34. c4 {[#]} (34. Qg4+ $1 $11 {keeps the balance.} Kc7 35. Bf4+ Kb6 36. a4) 34... Qf5 $1 $17 35. b4 (35. Rd1+ $17 Ke6 36. Bf4) 35... Ke6 $40 {[%mdl 128] Black wants a kill.} (35... e3 $1 $19 36. Bxe3 Qf3) 36. Rd1 $2 (36. g4 $17 {is the only way for White.} Qe5 37. Qxe5+ Kxe5 38. Bg7+ Kf4 39. Bh6+ Bg5 40. Bxg5+ Kxg5 41. Rd1) 36... Bf6 $19 ({Much less strong is} 36... Bxb4 37. Bf4) 37. Rd6+ $2 ({But not} 37. Qc7 $2 Be5 $19) (37. Qg4 Qxg4 38. hxg4) 37... Kxd6 {Black is clearly winning.} 38. Qf7 Bd7 39. Bf4+ Kc6 40. b5+ Kc5 {Accuracy: White = 50%, Black = 74%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.6"]
[White "Saduakassova, Dinara"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2519"]
[BlackElo "2523"]
[Annotator "ChessBase"]
[PlyCount "80"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:01:06]} Bg7 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:57]} c5 {[%emt 0:00:17]} 4. c3 {[%emt 0:09:32]} cxd4 {[%emt 0:04:01]} 5. cxd4 {[%emt 0:00:15]} b6 {[%emt 0:00:19]} 6. Bg2 {[%emt 0:00:45]} Bb7 {[%emt 0:00:14]} 7. Nc3 {[%emt 0:01:10]} Nf6 {[%emt 0:00:15]} 8. O-O {[%emt 0:00:42]} O-O {[%emt 0:00:15]} 9. d5 {[%emt 0:09:32]} Na6 {[%emt 0:13:09]} 10. Nd4 {[%emt 0:03:22]} Nc7 {[%emt 0:18:49]} 11. d6 {[%emt 0:07:39]} Ncd5 {[%emt 0:00:08]} 12. Nxd5 {[%emt 0:01:29]} Bxd5 {[%emt 0:07:56]} 13. Bxd5 {[%emt 0:14:54]} Nxd5 {[%emt 0:00:08]} 14. Bg5 {[%emt 0:03:10]} h6 {[%emt 0:02:09]} 15. dxe7 {[%emt 0:01:00]} Nxe7 {[%emt 0:01:20]} 16. Bf4 {[%emt 0:00:15]} Nc6 {[%emt 0:03:16]} 17. Nb5 {[%emt 0:01:20]} Bxb2 {[%emt 0:05:58]} 18. Bxh6 {[%emt 0:04:05]} Re8 {[%emt 0:00:25]} 19. Rb1 {[%emt 0:07:14]} Be5 {[%emt 0:00:52]} 20. Qd2 {[%emt 0:03:11]} Qf6 {[%emt 0:04:35]} 21. Bg5 {[%emt 0:03:40]} Qf5 {[%emt 0:01:07]} 22. Be3 {[%emt 0:01:36]} Rac8 {[%emt 0:03:08]} 23. Rfd1 {[%emt 0:04:37]} a6 {[%emt 0:01:43]} 24. Nd6 {[%emt 0:03:10]} Bxd6 {[%emt 0:00:04]} 25. Qxd6 {[%emt 0:00:08]} Ne5 {[%emt 0:00:02]} 26. Bf4 {[%emt 0:01:46]} Ng4 {[%emt 0:02:51]} 27. Rb2 {[%emt 0:04:49]} g5 {[%emt 0:03:40]} 28. Qd5 {[%emt 0:03:22]} Re5 {[%emt 0:01:33]} 29. Qb7 {[%emt 0:01:50]} Rce8 {[%emt 0:01:13]} 30. f3 {[%emt 0:09:45]} Rxe2 {[%emt 0:10:21]} 31. Qxb6 {[%emt 0:02:23]} Nxh2 {[%emt 0:02:34]} 32. Rxe2 {[%emt 0:01:23]} Rxe2 {[%emt 0:00:06]} 33. Qxa6 {[%emt 0:01:51]} Nxf3+ {[%emt 0:00:23]} 34. Kf1 {[%emt 0:00:03]} Re8 {[%emt 0:02:26]} 35. Qd3 {[%emt 0:01:05]} Qh3+ {[%emt 0:00:52]} 36. Kf2 {[%emt 0:00:04]} g4 {[%emt 0:00:56]} 37. Be3 {[%emt 0:00:23]} Qh2+ {[%emt 0:00:05]} 38. Kf1 {[%emt 0:00:03]} Qxg3 {[%emt 0:00:05]} 39. Rc1 {[%emt 0:00:36]} Nh4 {[%emt 0:02:09]} 40. Rc3 {[%emt 0:00:00]} Qf3+ {[%emt 0:00:00]} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.25"]
[Round "12.7"]
[White "L'Ami, Erwin"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "2606"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,62,6,20,9,21,7,74,0,0,0,13,-20,-24,-64,-97,-57,-36,-42,-53,-59,-44,-42,-14,-61,-57,-62,-49,-63,-39,-39,-11,-39,-39,-39,-39,-39,-11,-27,-15,-33,-23,-35,-37,-49,0,-26,0,-56,0]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. Nc3 Nc6 8. e3 e5 {[%cal Re5d4]} 9. d5 {D71: Fianchetto Grünfeld: 3 g3 d5 sidelines and 5 cxd5 (without Nf3)} Ne7 {[%cal Re7d5]} 10. e4 c6 (10... Bg4 $11 {remains equal.}) (10... Bg4 11. h3 Bxf3 12. Qxf3 O-O 13. O-O c6 14. Rd1 cxd5 {½-½ (14) Laznicka,V (2672)-Li,C (2722) Chartres 2017}) 11. O-O ({Better is} 11. d6 $16 Ng8 12. a4) 11... cxd5 $11 12. exd5 O-O {[%cal Rb6d5]} 13. Qb3 $146 ({Predecessor:} 13. Ng5 h6 14. Nge4 Kh7 15. a4 f5 16. Nc5 Qd6 {½-½ (71) Lei,T (2468)-Savchenko,B (2618) Subic Bay 2016}) 13... Nexd5 14. Nxe5 {[%cal Rc3d5]} Nxc3 ({Don't play} 14... Bxe5 15. Nxd5 Be6 16. Rd1 $11) 15. Qxc3 Nd7 16. f4 $1 Nxe5 17. fxe5 Qe7 18. Bf4 Bf5 19. Rac1 Rac8 20. Qe3 b6 21. h4 Qe6 22. b3 Bh3 23. Rfd1 Bxg2 24. Kxg2 Rxc1 25. Rxc1 Qd7 26. Re1 Re8 27. Qf3 h5 28. Re2 Qe6 29. Rf2 Qd7 30. Re2 Qe6 31. Rf2 Qd7 {Accuracy: White = 40%, Black = 49%.} (31... Rd8 $15) 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.1"]
[White "Warmerdam, Max"]
[Black "Smeets, Jan"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2498"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,8,9,18,0,1,9,0,8,-4,0,0,0,0,0,0,0,0,0,-15,-14,-20,76,79,151,147,199,205,290,289,290,278,287,284,273,266,255,278,262,250,1254,1219,1072,1032,1086,1105,29989,29990,29995,29996,29996,29997,29997,29998]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Nxc6 {B12: Caro-Kann: Advance Variation.} bxc6 7. Bd3 e6 8. Nd2 {The position is equal.} Ne7 {[#]} 9. Qg4 $146 ({Predecessor:} 9. Nf3 Ng6 10. h4 Ne7 11. h5 h6 12. O-O c5 13. c4 Bd7 14. Qe2 Bc6 15. b3 {1-0 (29) Inarkiev,E (2679)-Arutinian,D (2564) Konya 2011}) 9... Ng6 10. Nf3 Qc7 11. Qg3 Ba6 12. O-O $36 {[%mdl 2048] White has good play.} Bxd3 13. cxd3 Qb6 14. h4 h5 15. Be3 Qxb2 (15... Qa6 $11 {remains equal.}) 16. Nd4 $1 $16 Ne7 ({Black should play} 16... Qb7) 17. Rab1 Qxa2 (17... Qa3 $16) 18. Rb7 $18 Qa6 (18... Rc8 {keeps fighting.} 19. Qf3 Qa6) 19. Rfb1 Qxd3 20. Qf3 Rc8 21. Rb8 Qa6 {[#] next ...Rxb8 is good for Black.} 22. Bg5 $1 ({Less strong is} 22. R8b7 Qd3 $16) 22... Rxb8 23. Rxb8+ Nc8 {Threatens to win with ...Bc5.} 24. Qe2 Qa1+ $2 {[#]} (24... Qxe2 25. Rxc8+ {[%mdl 64] Double Attack} Kd7 26. Rd8+ (26. Nxe2 $2 {perishes.} Kxc8 27. Nc3 Kc7 $19) 26... Kc7 27. Nxe2 g6) 25. Kh2 $1 Kd7 26. Rb7+ Ke8 27. Nxc6 Bc5 {[#]} 28. Qb5 $1 {[%mdl 512] White mates.} Bxf2 29. Nd8+ Kf8 30. Rxf7+ {[%mdl 64] Double Attack} Kg8 31. Qe8+ {[%mdl 64] Double Attack. Accuracy: White = 100%, Black = 56%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.2"]
[White "Van Foreest, Lucas"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2523"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,57,31,35,26,26,22,18,7,9,0,18,18,18,18,29,18,14,14,16,18,19,12,20,13,25,8,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be6 7. N5c3 {B32: Sicilian: Löwenthal and Kalashnikov Variations} g6 $146 ({Predecessor:} 7... Nf6 8. Bd3 g6 9. O-O Bg7 10. Nd5 Nd7 11. Nbc3 O-O 12. Be3 a6 13. Rc1 f5 14. exf5 gxf5 {1-0 (44) Buhmann,R (2574)-Loxine,J (2393) Germany 2019}) 8. Be2 Bg7 9. Be3 Nge7 10. Nd5 O-O 11. Nbc3 Nd4 12. O-O Nxd5 13. Nxd5 Bxd5 14. cxd5 Nxe2+ 15. Qxe2 f5 16. f3 Qh4 17. Bf2 (17. exf5 {looks sharper.} gxf5 18. Rac1 Rac8 19. Rxc8 Rxc8 20. Bxa7 Qa4 21. Be3) 17... Qe7 18. Rac1 Bh6 {The position is equal.} 19. Be3 Bxe3+ 20. Qxe3 fxe4 21. fxe4 a6 22. h3 Rxf1+ 23. Rxf1 Rf8 24. Rxf8+ Qxf8 $11 {KQ-KQ} 25. Qa7 Qc8 26. Kh2 Qf8 27. Kg1 Qc8 28. Kh2 Qf8 29. Kg1 {Accuracy: White = 54%, Black = 75%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.3"]
[White "Smirnov, Anton"]
[Black "Ganguly, Surya Shekhar"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2604"]
[BlackElo "2636"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,52,0,0,1,0,5,0,0,11,6,7,0,-44,0,-62,-69,-67,-60,-161,-153,-139,-149,-179,-140,-199,-215,-208,-206,-210,-206,-284,-226,-285,-282,-280,-257,-360,-345,-322,-277,-754,-606,-1434,-1417]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 O-O 6. e4 b5 {E20: Nimzo-Indian: 4 g3 and 4 f3.} 7. e5 Ne8 8. f4 exd5 {The position is equal.} 9. cxd5 Bb7 $5 {[%mdl 4] Exploring less charted territory.} 10. Nf3 {[#]} c4 $146 ({Predecessor:} 10... d6 11. Bd3 f5 12. O-O c4 13. Bc2 Bc5+ 14. Kh1 Nc7 15. Ng5 h6 16. Qh5 b4 {1-0 (45) Gunina,V (2497)-Kosteniuk,A (2507) Izhevsk 2019}) 11. Be2 Qb6 12. Bd2 (12. d6 $1 $11) 12... Nc7 $15 13. d6 Ne6 14. f5 ({White should play} 14. a3 $15 Bxc3 15. bxc3) 14... Nd4 $19 15. f6 Re8 $1 16. a3 Ba5 17. fxg7 (17. Be3 $17 Nc2+ {[%mdl 64] Discovered Attack} 18. Qxc2 Qxe3 19. Qc1 Qxc1+ 20. Rxc1) 17... Nxf3+ 18. Bxf3 Rxe5+ 19. Kf1 {[#]} Na6 $1 {[%cal Bb8a6,Ba6c5,Bc5d3][%mdl 32]} 20. Be1 Bxc3 ({But not} 20... Kxg7 $2 21. Bf2 $16) 21. Bf2 {[#]} Nc5 $1 22. bxc3 Rae8 $40 {[%mdl 128] Black goes for the king.} 23. h4 (23. Bxb7 $142 Qxb7 24. Qf3) 23... Bxf3 ({Stronger than} 23... Kxg7 24. Bxc5 Bxf3 25. Bxb6 $14) 24. Qxf3 Qxd6 {...Nb3 is the strong threat.} 25. h5 $2 (25. Kg1 Re4 26. Rh3) 25... Nd3 26. Bg3 {[#]} Qxa3 $1 {[%mdl 576] Back Rank. Accuracy: White = 37%, Black = 81%.} 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.4"]
[White "Eljanov, Pavel"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2650"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,109,24,27,20,32,26,27,24,46,43,83,73,111,100,126,142,132,139,180,112,114,74,70,-84,-103,-100,-49,-33,-22,-41,-35,-29,-43,-75,-50,-135,-116,-116,-33,-179,-22,-43,0,0,0,-225,-204,-383,-381,-289,-37,-34,93,0,0,-30,87,0,0,-259,0,-120,0,0,11,11,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,12]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. a4 Bb7 9. d3 O-O 10. Bd2 Nd4 11. Nxd4 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} exd4 12. c3 dxc3 13. Nxc3 {White has an edge.} b4 14. Ne2 {[#]} d5 $146 ({Predecessor:} 14... a5 15. f3 c5 16. Be3 Rc8 17. Rc1 d5 18. Ng3 g6 19. Bf2 Qd7 20. Qe2 dxe4 21. dxe4 {1-0 (36) Saltaev,M (2480)-Noack,C Dresden 1999}) 15. e5 Nd7 16. Nf4 c6 17. d4 Re8 18. a5 Rb8 19. Nh5 (19. e6 $18 {aiming for exf7+.} Nf6 20. exf7+ Kxf7 21. Qf3 (21. Qe2 Bd6 $14)) 19... g6 $16 20. f4 f5 (20... gxh5 $6 21. Qxh5 Kh8 22. Bc2 $16) 21. g4 $2 (21. exf6 $14 {keeps the upper hand.} Bf8 22. Qf3 Nxf6 23. Ng3) 21... gxh5 $17 22. gxf5 {[#]} Nf6 $1 {[%mdl 512]} 23. exf6 $15 Bxf6 24. Re5 Kh8 25. Qxh5 Rg8+ 26. Kf2 Qf8 {[%mdl 1024] Black has strong compensation.} (26... c5 $5) 27. Rc1 (27. Rae1 $15) 27... Qg7 $17 28. Qh3 Bc8 (28... c5 $1 $17 29. Be3 Rbf8) 29. Ke3 {[#]} (29. Bc2 $1 $15) 29... c5 $2 (29... Bd7 $1 $19 30. Re1 Bxe5 31. fxe5 (31. dxe5 Rbf8 $17) 31... Qg5+ {[%mdl 64] Double Attack} 32. Ke2 Qxf5 33. Qxf5 Bxf5) 30. Bxd5 $11 (30. Rxc5 $2 Bxe5 31. dxe5 Qg1+ 32. Kd3 Qxc5 $19) 30... cxd4+ (30... Rf8 $5 {[%cal Rc5d4]} 31. Kf2 (31. Rxc5 $2 Bxe5 32. dxe5 Qg1+ 33. Ke2 Qxc5 $19 {[%mdl 64] Double Attack}) 31... Bxe5 32. dxe5 Bxf5 $15) 31. Kf2 (31. Kxd4 $2 Rd8 $19) 31... Bb7 {And now ...Bxd5 would win.} 32. Bxb7 $2 (32. Bxg8 $11 {and White has nothing to worry.} Rxg8 33. Re6) 32... Rxb7 $19 33. Re6 $2 {[#]} (33. Rec5 {was forced.}) 33... d3 $1 {[%mdl 512]} 34. Kf3 (34. Qxd3 Rd7) 34... Rb5 $2 ({Black should try} 34... Bxb2 $19 35. Rb1 Bd4) 35. Rcc6 $1 $15 Qg1 (35... Bxb2 $15 {stays ahead.} 36. Rh6 Rb7) 36. Re1 ({Better is} 36. Rc7 $16 {[%csl Gh3][%cal Rc7h7]} Qh1+ 37. Ke3 Qg1+ 38. Ke4 Qd4+ 39. Kf3 Qd5+ 40. Kf2 Qxf5 41. Qxf5 Rxf5 42. Ke3 (42. Rxa6 Bxb2 43. Kf3 Rd5 $16) 42... Bxb2 43. Bxb4 (43. Rxa6 Rd5 $11)) 36... Qg7 $11 {Threatens to win with ...Qb7.} 37. Ree6 $1 {[%cal Re6f6]} Qg1 (37... Bxb2 $11 {remains equal.} 38. Rh6 Rb7) 38. Re1 (38. Rc7 $16 {[%csl Gh3][%cal Rc7h7]} Qh1+ 39. Ke3 Qg1+ 40. Ke4 Qd4+ {[#]} 41. Kf3 $1 {[%mdl 512]} Qd5+ 42. Kf2 Qxf5 43. Qxf5 Rxf5 44. Ke3 (44. Rxa6 Bxb2 45. Kf3 Rd5 $16)) 38... Qg7 39. Rce6 $2 {[%mdl 8192]} (39. Ree6 $1 $11 Bxb2 40. Rh6) 39... Rb7 $2 ({Don't do} 39... Rxa5 40. Rxf6 Qxf6 41. Re6 $19) ({Black should play} 39... Rc5 $19 {White must now prevent ...Rc2.} 40. R1e3 Rc2 41. Rxd3 Rxb2) 40. Rxa6 (40. Rc1 $1 $11) 40... Bxb2 (40... Qf7 $17 41. Rd6 Rd7) 41. Rg6 $1 {[%cal Rg6g7] The position is equal.} Qf7 42. Rxg8+ Qxg8 43. Qh6 {Hoping for Qc6.} Qd5+ 44. Re4 Rb8 $1 {[%cal Rb8e8] ...Re8 is the strong threat.} 45. Qe6 Qxa5 46. Bxb4 d2 47. Qd7 {Re8+ would kill now.} Qxf5 48. Re8+ Rxe8 49. Qxe8+ (49. Qxf5 {gets mated.} d1=Q+ 50. Kg3 Qg1+ 51. Kh3 Re3+ 52. Kh4 Qxh2+ 53. Kg5 Rg3+ 54. Qg4 Qh3 55. Bc3+ Bxc3 56. Qxg3 Qxg3+ 57. Kh5 Be1 58. Kh6 Qh4#) 49... Kg7 50. Qe7+ Kg6 51. Qe8+ Kg7 52. Bxd2 Qd5+ 53. Ke2 Bf6 54. Qe3 Qg2+ 55. Qf2 {Accuracy: White = 61%, Black = 51%.} 1/2-1/2

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.5"]
[White "Grandelius, Nils"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2673"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,5,10,0,7,12,18,13,27,6,3,0,0,-3,9,0,3,11,14,0,16,0,0,-8,12,18,19,4,14,0,0,0,0,0,34,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-22,-22,-8,-8,-20,-12,-14,-18,-18,-16,-13,-14,-64,-63,-68,-55,-69,-40,-52,-20,-25,-10,-9,-11,-11,-15,-12,-11,-73,-68,-71,-73,-29969,-29970,-29969,-29967,-29996,-29997]} 1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. O-O Nd7 5. h3 Bh5 6. d4 {A07: Réti Opening: New York and Capablanca Systems} e6 7. c4 Ngf6 8. cxd5 {The position is equal.} exd5 9. Ne5 Ne4 10. Bxe4 dxe4 11. Nc3 Be7 $146 ({Predecessor:} 11... f5 12. Qb3 Nxe5 13. dxe5 {½-½ (51) Malikentzos,S (2441)-Navara,D (2740) Porto Carras 2018}) 12. Bf4 Nxe5 13. dxe5 Bg6 14. Qb3 Qc8 15. Rac1 O-O 16. Kh2 Bf5 17. g4 Be6 18. Qc2 h5 19. Qxe4 hxg4 20. hxg4 Bxg4 21. Rg1 {Hoping for Qg2.} Qf5 {( -> ...Qh5+)} 22. Qxf5 (22. Rg3 {feels hotter.} g6 23. Rh1 Rfe8 24. Kg2 Qxe4+ 25. Nxe4 Bf5 26. Ng5) 22... Bxf5 23. e4 Bg6 24. Rg3 Rfe8 25. Kg2 Bb4 26. f3 Rad8 27. Rh1 Bxc3 28. bxc3 Rd3 29. Rgh3 {[%csl Gh1][%cal Rh3h8]} f6 30. Rh8+ Kf7 31. Rxe8 Kxe8 $11 {[%mdl 4096] Endgame KRB-KRB} 32. Rh8+ Ke7 33. Rb8 Bh5 {And now ...b5 would win.} 34. Rxb7+ Ke6 {White should prevent ...g5.} 35. exf6 gxf6 36. Rb3 Bxf3+ 37. Kf2 Bxe4 {...Rf3+ is the strong threat.} 38. Be3 a5 39. Ra3 f5 40. Bd4 f4 41. Rxa5 {Threatens to win with Re5+.} Bd5 42. Ke2 Rh3 43. a4 Rh1 44. Ra8 {[#]} (44. Kd2 $11 {remains equal.}) 44... c5 $1 $17 {[%cal Rc5d4][%mdl 512]} 45. Ra6+ (45. Bxc5 Bxa8) 45... Kf5 46. Ra5 $2 {[%mdl 8192] [#]} (46. Rf6+ $17 Kg5 47. Be5) 46... f3+ $1 {Black mates.} 47. Kf2 Rh2+ 48. Kg1 {[#]} f2+ 0-1

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.6"]
[White "Nihal Sarin"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2618"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,121,2,12,0,0,0,0,0,-1,8,17,0,27,20,21,20,24,25,22,19,21,26,42,46,44,52,39,40,152,143,152,137,142,139,139,155,142,149,152,109,180,108,105,105,96,87,199,202,246,246,246,246,264,241,311,314,311,303,362,371,483,472,425,354,400,333,395,333,344,283,283,237,381,381,381,381,381,380,370,371,357,283,362,359,368,376,374,374,342,345,505,484,501,387,522,527,487,468,1092,1060,1078,1032,1092,1092,1781,1602,29957,11689,29982,29983,29983,29984,29984,29985]} 1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Nf3 Nf6 5. c4 Bxb1 6. Qxb1 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (6. Rxb1 Bb4+ 7. Ke2 dxc4 8. Qa4+ Nc6 9. Ne5 a5 10. Nxc6 Qd7 11. g3 Nd5 12. Bg2 Ra6 13. a3 Be7 14. Rhc1 Qxc6 15. Qxc4 Nxf4+ 16. gxf4 Qxg2 17. Qxc7 Bd8 18. Qe5 Rc6 19. Rxc6 bxc6 20. Qc5 Qd5 {0-1 (20) So,W (2780)-Wei,Y (2729) chess.com INT 2018}) 6... Bb4+ 7. Kd1 Be7 8. c5 {The position is equal.} Ne4 $146 ({Predecessor:} 8... b6 9. b4 Ne4 10. Qc2 O-O 11. Bd3 Nc6 12. a3 bxc5 13. Bxe4 dxe4 14. Qxe4 {1-0 (75) Margvelashvili,G (2547)-Gerzhoy,L (2489) Saint Louis 2012}) 9. Qc2 O-O 10. Bd3 Nc6 {Strongly threatening ...Nb4.} 11. Bxe4 dxe4 12. Qxe4 Bxc5 $1 13. Ke2 Bd6 14. Ng5 {[%csl Gg5][%cal Re4h7]} g6 15. Bxd6 cxd6 16. Qh4 $40 {[%csl Gg5][%cal Rh4h7][%mdl 128] White attacks.} h5 17. g4 Qb6 18. gxh5 Qb5+ ({Much worse is} 18... Qxb2+ $6 19. Kf3 $16) (18... f6 $1 $14 19. Nxe6 Qb5+ 20. Kf3 Qf5+ {[%mdl 64] Double Attack} 21. Nf4 g5 {[%mdl 64] Double Attack, Pin}) 19. Ke1 $1 $16 ({Don't do} 19. Kf3 f6 $14) 19... Qxb2 20. Rd1 Qb4+ 21. Kf1 Qb5+ {[#]} 22. Kg1 $1 {Black must now prevent hxg6.} Kg7 23. hxg6 Kxg6 24. Ne4 {d5 is the strong threat.} Rg8 {[#]} (24... Qh5 $16 25. Qxh5+ (25. Qg3+ Kh6 $16) 25... Kxh5) 25. h3 (25. f4 $1 $18 {Threatens to win with Kf2.} Qe2 26. Re1) 25... Qh5 26. Qxh5+ Kxh5+ 27. Kh2 Kh4 (27... Rg6 $16 {keeps fighting.}) 28. Nxd6 Rad8 29. Nxb7 Rb8 30. Rb1 a5 31. a3 Ne7 32. Nxa5 Ra8 33. Nc4 Nd5 34. Rhg1 f5 35. Rxg8 Rxg8 $18 {[%mdl 4096] Endgame KRN-KRN} 36. Nd2 Rc8 37. Nf3+ Kh5 38. Rb2 Rc3 39. Ne5 Rxa3 40. Rc2 Kg5 (40... f4 $142 41. e4 Nc3) 41. Rc6 Ra2 42. Kg1 Kf6 43. Nd7+ Kf7 44. Nc5 f4 45. Rxe6 fxe3 46. fxe3 Re2 47. e4 Nf4 48. Re5 {aiming for Rf5+.} Nxh3+ 49. Kf1 Rc2 (49... Rf2+ {is a better defense.} 50. Ke1 Rc2) 50. Rh5 Rc3 51. Ke2 Kg6 52. Rf5 Ng5 53. Rf1 Ra3 (53... Nf7 $142 54. Nd7 Ng5) 54. e5 Ra2+ 55. Kd3 Ra3+ 56. Kc4 Nf3 57. Kd5 Re3 58. e6 Kg7 59. Ne4 {White mates.} Rd3 {[#]} 60. Rxf3 $1 Rxf3 61. e7 {Accuracy: White = 80%, Black = 34%.} 1-0

[Event "82nd Tata Steel Challengers 2020"]
[Site "Wijk aan Zee"]
[Date "2020.01.26"]
[Round "13.7"]
[White "Abdusattorov, Nodirbek"]
[Black "Saduakassova, Dinara"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2635"]
[BlackElo "2519"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2020.01.11"]
[EventType "tourn"]
[EventCountry "NED"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,151,0,0,0,14,15,7,12,15,14,20,14,18,17,20,7,23,0,0,0,15,0,60,69,71,64,63,64,96,103,109,108,88,84,112,81,84,83,84,93,73,76,84,80,93,67,68,72,69,58,47,41,48,17,114,108,117,109,118,122,115,120,120,118,123,124,121,123,118,107,107,111,119,101,122,119,115,104,106,89,104,89,95,103,95,83,75,29,36,24,24,24,24,24,24,24,24,24,31,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,8,8,8,8,8,8,8,8]} 1. Nf3 Nf6 2. e3 c5 3. d4 d5 4. b3 Nc6 5. Bb2 cxd4 6. Nxd4 {D04: Colle System.} Bg4 7. Nxc6 bxc6 8. Be2 Bxe2 9. Qxe2 {[#]} g6 $146 ({Predecessor:} 9... e6 10. O-O Bd6 11. c4 O-O 12. Nc3 Qa5 13. Rac1 Ba3 {½-½ (13) Nguyen,H (2406)-Atabayev,Y (2455) Chengdu 2017}) 10. c4 Bg7 11. O-O O-O 12. Rc1 Qd7 13. Nc3 Rfd8 14. Na4 Qf5 15. Rc2 dxc4 (15... Ne4 $11) 16. Rxc4 $14 Ne4 17. Bxg7 Kxg7 18. f3 Qf6 19. Qe1 Ng5 20. Rac1 Rac8 21. Nc5 Rd5 22. f4 Ne6 23. Ne4 Qf5 24. Qc3+ Kg8 25. Nf2 {[#] e4 is the strong threat.} Rd6 26. h3 Qh5 27. Ng4 f6 28. Nf2 Kf7 29. Kh2 Qe2 30. Rc2 $1 {[%cal Rc2e2]} Qf1 31. b4 Rb8 (31... h5 $11) 32. Qb3 $16 {Threatens to win with Ne4.} a5 33. a3 axb4 34. Rxc6 Rb6 35. Rxd6 Rxd6 36. axb4 Qb5 37. Ne4 Rd3 38. Rc3 Rxc3 39. Qxc3 ({Of course not} 39. Nxc3 $6 Qd3 $11) 39... Qd5 40. Qc2 h5 41. Qb1 Nc7 42. Nc5 Nb5 43. Qd3 (43. Qc2 {looks sharper.} Nd6 44. e4 Qd4 45. Qb3+ Nc4 46. h4) 43... Qxd3 44. Nxd3 {[%mdl 4096] Endgame KN-KN} Ke6 45. Kg3 Kd5 46. Nc5 Nd6 47. Kf3 Kc4 48. Na6 Nf5 $1 49. Nc7 Kxb4 50. g4 hxg4+ $1 51. hxg4 Nh6 52. Nd5+ Kc5 53. Nxe7 g5 54. e4 {[#] Black must now prevent e5.} gxf4 {The position is equal.} 55. Kxf4 Kc4 $1 56. Nf5 Ng8 $1 57. Ke3 Kc5 58. Kf3 Kc6 59. Ke2 Kd7 60. Ke3 Ke6 61. Kd4 Ne7 62. Ke3 Ng6 63. Nd4+ Kd6 64. Kf3 Ke5 65. Nb3 Nh4+ 66. Kg3 Ng6 67. Nd2 Kd4 68. Kf3 Kd3 69. Nb3 Ne5+ 70. Kf4 {Strongly threatening Nc1+.} Nxg4 71. Nc1+ Kd4 $1 72. Nb3+ Kd3 $1 73. Nc5+ Kc4 74. Nd7 Nf2 75. Nxf6 Nxe4 76. Kxe4 {Accuracy: White = 95%, Black = 92%.} 1/2-1/2

