[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.16"]
[Round "1"]
[White "Stukopin, Andrey"]
[Black "Shimanov, Alex"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2586"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,14,12,20,16,22,9,16,8,25,8,10,14,12,37,1,0,0,0,0,0,0,-48,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. d4 Bd6 7. Be2 O-O 8. O-O Qc7 {B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} (8... Re8 9. c4 Nd7 10. Bd3 Nf8 11. h3 Ng6 12. Qc2 Qa5 13. c5 Bb8 14. Bd2 Qd8 15. Rfe1 Be6 16. Bc4 Nf8 {0-1 (47) Nepomniachtchi,I (2767)-Carlsen,M (2840) Doha 2016}) 9. h3 Nd7 10. Bd3 Rd8 $146 ({Predecessor:} 10... Bf4 11. Re1 Bxc1 12. Rxc1 Nb6 13. c4 Bd7 14. Qd2 Rae8 15. b3 Qd8 16. a4 {0-1 (77) Velasquez Ojeda,C (2335)-Michel Yunis,C (2345) Santiago de Chile 1995}) 11. c4 Nf8 12. Qc2 Be6 13. Re1 Qd7 14. Bd2 Ng6 15. Rad1 Bxh3 16. gxh3 Qxh3 {[#] ( -> ...Nh4)} 17. Bxg6 $1 hxg6 18. Qb3 Re8 19. c5 {The position is equal.} Bc7 20. Rxe8+ Rxe8 21. Re1 Qg4+ 22. Kf1 Qh3+ 23. Kg1 Qg4+ 24. Kf1 Qh3+ 25. Kg1 Qg4+ 26. Kf1 Qh3+ 27. Kg1 Qg4+ 28. Kf1 Qh3+ 29. Kg1 Qg4+ 30. Kf1 Qh3+ 31. Kg1 {Precision: White = 69%, Black = 78%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.16"]
[Round "1"]
[White "Sevian, Samuel"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2585"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,70,13,41,27,32,28,57,0,44,12,22,2,19,18,15,-19,0,0,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,50,43,38,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. Nf3 Bd7 {LiveBook: 49 Games} 8. c3 {C13: French: Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack} (8. Bc4 Bc6 9. Qe2 Bxe4 10. Qxe4 c6 11. O-O-O Nd7 12. h4 Qe7 13. g4 g6 14. g5 Bg7 15. h5 Rf8 16. hxg6 hxg6 {1-0 (34) Istratescu,A (2651)-Stojanovic,M (2571) Switzerland 2013}) 8... Bc6 9. Nxf6+ gxf6 10. Nd2 $146 (10. Be2 $14) ({Predecessor:} 10. g3 Qd5 11. Bg2 Qe4+ 12. Kf1 Bb5+ 13. Kg1 Be2 14. Qe1 Bxf3 15. Qxe4 Bxe4 16. Bxe4 {½-½ (34) Nestorovic,N (2495)-Kosic,D (2517) Niksic 2016}) 10... Qd5 11. Nc4 Nd7 12. Ne3 Qg5 13. h4 Qf4 14. a4 O-O-O 15. Qh5 Nb6 16. Bb5 Nd5 17. Rh3 ({But not} 17. Qxf7 Nxe3 18. Qxe6+ Kb8 $17) 17... Nxe3 18. fxe3 Qe4 19. Qf3 ({Not} 19. Qxf7 $2 Bxb5 20. axb5 Rhg8 $19) 19... Rhg8 {[#] And now ...Qxf3 would win.} 20. Bxc6 Qxc6 21. Qxc6 bxc6 $11 {[%mdl 4096] Endgame KRR-KRR} 22. Kf2 Rg4 23. Rf3 f5 24. g3 c5 {[%cal Rc5d4]} 25. b4 c4 26. Rb1 Kd7 27. b5 Kd6 {The position is equal.} 28. Rf4 Rxf4+ 29. exf4 {KR-KR} Rb8 30. Rb4 Kd5 $1 31. Kf3 h5 32. a5 f6 33. Ke3 Rg8 34. Kf3 Rb8 35. Ke3 Rg8 {Precision: White = 62%, Black = 78%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.16"]
[Round "1"]
[White "Ramirez, Alejandro"]
[Black "Li, Ruifeng"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "2550"]
[BlackElo "2574"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,0,5,30,20,33,46,38,0,0,15,14,0,0,-7,-6,-8,-13,-8,61,90,84,24,33,20,29,8,42,52,106,0,0,-39,-35,-89,-61,-52,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e4 d6 6. d3 f5 7. Nge2 Nf6 8. h3 {A26: English Opening vs King's Indian with ...Nc6 and d3} (8. O-O O-O 9. Nd5 Be6 10. Bg5 Qd7 11. Qd2 Nh5 12. exf5 Bxf5 13. b4 Rae8 14. b5 Nd8 15. Bxd8 Rxd8 16. Nec3 c6 17. Nb4 Rc8 18. a4 {1-0 (41) Nisipeanu,L (2668)-Kozul,Z (2594) Bled 2016}) 8... O-O 9. Be3 {LiveBook: 11 Games} f4 10. gxf4 {White has an edge.} Nh5 {[%cal Re5f4]} 11. Qd2 Nd4 12. fxe5 (12. f5 $5) 12... dxe5 13. O-O-O $146 ({Predecessor:} 13. Bg5 Bf6 14. Bh6 Rf7 15. O-O-O Be6 {0-1 (50) Frayna,J (2273)-Sean,W (2450) Olongapo City 2015}) 13... Be6 14. f4 exf4 15. Nxf4 Nxf4 16. Bxf4 b5 17. e5 b4 (17... Rb8 $11 18. Nd5 bxc4 19. dxc4 c5) 18. Nd5 $1 $14 {Strongly threatening Bg5.} c6 {[#]} 19. Nf6+ $1 {[%mdl 512]} Bxf6 $11 20. exf6 Qxf6 21. Be3 Bf5 (21... b3 $5 {[%cal Rb3a2]} 22. a3 Rae8 $14) 22. Rhe1 ({Inferior is} 22. Qxb4 Ne2+ 23. Kb1 Rab8 $17) 22... b3 (22... a5 $1 $14) 23. a3 ({White has to play} 23. Bxd4 $1 $16 Qxd4 24. axb3) 23... Nc2 24. Bg5 (24. Re2 $5 {[%cal Re3g5]}) 24... Nxe1 25. Bxf6 (25. Rxe1 $15 Qd4 26. Bxc6) 25... Nxd3+ $17 26. Kb1 {[#] Hoping for Rf1.} Nb4+ (26... Rxf6 $15 27. Ka1 Re8) 27. Ka1 $11 {The position is equal.} Nc2+ 28. Kb1 Nb4+ 29. Ka1 Nc2+ 30. Kb1 Nb4+ {Precision: White = 57%, Black = 58%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "2"]
[White "Nyzhnyk, Illya"]
[Black "Shimanov, Alex"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2610"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,93,31,0,0,2,16,21,33,15,39,8,5,7,25,0,0,0,0,-33,-6,-3,28,38,24,-8,-1,-11,-2,-7,-22,-28,-15,-16,0,0,-5,-16,-6,-8,0,-216,-138,-168,0,0,0,0,0,0,0,-301,0,0,0,0,0,0,0,0,0,0,0,0,35,0,0,0,0,0,0,0,2,0]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. d4 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bf4 Bd6 11. Nbd2 Nbd7 12. Rfc1 {LiveBook: 3 Games. E05: Open Catalan: 5 Nf3 Be7} (12. Be5 $5) (12. Nb3 Be4 13. Qd2 Qe7 14. Rfc1 Rfc8 15. Bxd6 cxd6 16. Qa5 Rcb8 17. Nbd2 Bd5 18. Rc2 Qd8 19. Qxd8+ Rxd8 {1-0 (51) Kramnik,V (2785)-Shirov,A (2739) Moscow 2007}) 12... Rc8 13. Nb3 Bd5 $146 ({Predecessor:} 13... Be4 14. Qd2 Nd5 15. Ne5 Bxg2 16. Kxg2 Bxe5 17. Bxe5 N5b6 18. Bf4 Nc4 19. Qb4 Ndb6 {1-0 (27) Seirawan,Y (2620)-Raptis,N (2268) Vancouver 2012}) 14. a4 h6 15. axb5 axb5 16. Qd3 Bc4 17. Qd1 Bd5 18. Ra5 Bxf4 19. gxf4 c6 20. Rca1 Ne4 21. e3 g5 22. fxg5 Nxg5 23. Nbd2 Kh8 24. Ne1 Rg8 {Hoping for ...Nh3+.} 25. Kf1 $1 Nf6 26. Ra7 Rg7 27. h4 Nge4 28. Nxe4 Nxe4 29. Bxe4 Bxe4 30. Qh5 $1 Kg8 31. f3 $2 ({Don't go for} 31. Qxh6 $2 Qd5 $19) (31. Nf3 $11) 31... Bf5 32. Qxh6 {[#]} Qf8 $2 (32... e5 $1 $19 33. Rd1 (33. dxe5 $2 Qd2 $19) 33... Qd5) 33. Qf4 $1 $11 Bh3+ 34. Ke2 {And now Qh2 would win.} Qb4 35. Ra8 Qxb2+ 36. Kd3 $2 {[%mdl 8192] [#]} (36. Kd1 $11 {and White stays safe.} Qb3+ 37. Kd2 Qb2+ 38. Kd1) 36... Bf1+ $2 (36... Kh7 $1 $19 {( -> ...f5)} 37. R8a2 Qb3+ 38. Ke2 Rcg8) 37. Ke4 Rxa8 38. Rxa8+ Kh7 39. Qb8 {Intending Qh8+ and mate.} ({Don't play} 39. Ke5 Qb4 $17) 39... Qb1+ 40. Ke5 {Qh8+ would kill now.} Qf5+ 41. Kd6 Qd5+ 42. Kc7 Kg6 {aiming for ...b4!} 43. Qh8 {Black must now prevent e4.} f6+ {The position is equal.} 44. Kb6 {Rd8 is the strong threat.} b4 {[%csl Gc6,Gf1][%cal Rd5b5]} 45. Qe8+ Kh6 {[%csl Gc6,Gf1][%cal Rd5b5]} 46. Qh8+ Kg6 {[%csl Gc6,Gf1][%cal Rd5b5]} 47. Qe8+ {Precision: White = 65%, Black = 56%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "2"]
[White "Sevian, Samuel"]
[Black "Ramirez, Alejandro"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2585"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,87,0,0,7,22,11,-6,-6,-27,-17,-23,-16,-17,-18,-17,-18,-16,-6,-9,4,4,8,8,9,22,55,30,73,63,74,77,84,86,78,75,81,64,87,83,96,48,80,85,141,138,196,168,239,235,274,265,265,227,497,494,479,247,241,234]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O 11. Qg3 Nxd4 12. Bxd4 b5 13. a3 Bb7 14. Bd3 Rad8 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3} 15. Rae1 e5 16. fxe5 {LiveBook: 4 Games} dxe5 {The position is equal.} 17. Bxe5 Qc5+ $1 18. Kh1 Nh5 19. Qe3 {aiming for Nd5!} Qxe5 20. Rf5 {[#]} Qd4 $146 ({Predecessor:} 20... Ng3+ 21. hxg3 Qe6 22. Nd5 {1-0 (33) David,A (2587)-Negi,P (2592) Evry 2009}) 21. Qxd4 Rxd4 22. Rxh5 g6 23. Rh3 Re8 24. Rf1 Bf8 25. Rxh7 Kxh7 26. Rxf7+ Bg7 {[%cal Rb7e4]} 27. Rxb7 Rd6 28. g3 Kh8 29. Nd5 Bxb2 {[#]} 30. a4 $1 {[%mdl 512]} Bd4 (30... bxa4 31. Rxb2) 31. axb5 axb5 32. Rxb5 g5 33. Rb4 Ba7 34. Rb7 Bd4 35. Rf7 Ra8 36. Kg2 Ra1 ({Better is} 36... Re8) 37. Kh3 $1 $16 Rh6+ (37... Ra7 $16 38. Rxa7 Bxa7) 38. Kg4 $18 Rxh2 (38... Ra8 {is a better defense.} 39. c3 Bg7) 39. Ne7 $1 ({Resist} 39. Kxg5 $6 Kg8 $16) 39... Rh7 40. Rf8+ $1 ({Less strong is} 40. Rxh7+ Kxh7 41. Kxg5 (41. e5+ Kh8 $14) 41... Bb2 $14) 40... Kg7 41. Rd8 Bc5 $2 {[#]} (41... Be5 {was called for.} 42. Rd5 Bf6) 42. Nf5+ $1 Kf6 43. Bc4 (43. Rc8 $142) 43... Re1 {[#]} 44. Bd5 $1 {Precision: White = 73%, Black = 31%.} 1-0

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "2"]
[White "Li, Ruifeng"]
[Black "Stukopin, Andrey"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2574"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,83,56,6,30,0,0,0,4,0,0,-23,0,0,0,-8,0,0,0,-16,-16,-11,-16,-20,-14,-70,-18,-24,0,-70,-48,-48,-45,-72,-83,-83,-80,-77,-80,-102,-97,-100,-81,-95,-87,-124,-117,-206,-43,-205,-233,-226,-205,-226,-211,-190,-161,-382,-368,-365,-379,-351,-294,-271,-152,-152,0,0,0,0]} 1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. g3 d5 5. exd5 Nxd5 6. Bg2 Nxc3 7. Nxc3 e6 8. O-O Be7 9. d3 (9. Bxc6+ $5 bxc6 10. d3 $11) 9... Nd4 {B23: Closed Sicilian: Lines without g3} (9... O-O 10. Re1 Nd4 11. Ne4 e5 12. h4 Be6 13. c3 Nc6 14. Be3 Bd5 15. c4 Bxe4 16. Bxe4 Qd7 17. Qf3 {½-½ (39) Larino Nieto,D (2451)-Shirov,A (2696) Rabat 2015}) 10. Ne4 Bd7 {[%cal Bc8d7,Bd7c6,Bc6d5][%mdl 32]} 11. c3 $146 ({Predecessor:} 11. Be3 Rc8 12. a4 Bc6 13. f3 O-O 14. Nd2 Bd5 15. Rb1 {½-½ (36) Lematschko,T (2305)-Kelecevic,N (2440) Switzerland 1993}) 11... Nf5 12. Qh5 O-O 13. Rd1 g6 14. Qe2 Bc6 15. h4 h5 16. Bf4 Qd7 17. Rd2 Rad8 18. Rad1 Bd5 19. b3 b6 20. Ng5 (20. d4 $11) 20... Bf6 (20... Bxg2 $15 21. Kxg2 e5 $1 {[%mdl 512]}) 21. Be5 $11 Be7 {White must now prevent ...f6.} 22. Bf4 Rfe8 (22... e5 $5 23. Be3 (23. Qxe5 $2 Bxg2 24. Kxg2 Bxg5 $19) 23... Bxg2 24. Kxg2 Qd5+ 25. f3 Bxg5 26. Bxg5 Rd7 $15) 23. Ne4 f6 24. d4 cxd4 25. cxd4 Qb7 26. Kh2 Kf7 27. f3 Rd7 28. Qf2 Red8 29. Nc3 Bb4 30. Rd3 Bc6 31. g4 {[#]} (31. d5 $17 {was necessary.} exd5 32. Bh3) 31... Nxd4 $2 (31... hxg4 32. fxg4 Ne7 33. Bg5 $11) (31... Rxd4 $1 $19 {[%mdl 512]} 32. Rxd4 Nxd4 33. Rxd4 Bc5) 32. Rxd4 $2 ({Better is} 32. Ne4 $15 e5 33. gxh5) 32... Rxd4 $19 ({Inferior is} 32... Bxc3 33. Rxd7+ Rxd7 34. Rxd7+ Qxd7 35. gxh5 $11) 33. Rxd4 Bc5 34. Be3 ({Wrong is} 34. Ne2 $2 e5 $19) 34... Bxd4 35. Bxd4 e5 36. Bxe5 $2 (36. Be3 {is the only way for White.} hxg4 37. Ne4) 36... fxe5 37. gxh5 gxh5 38. Ne4 Bxe4 39. fxe4+ {[#]} Ke7 (39... Ke8 $1 $19 {...Qg7 is the strong threat.} 40. Qf6 Qe7 41. Qh8+ Kd7 42. Qxh5 Qf6 43. Bh3+ Ke7 44. Qh7+ Qf7 45. Qxf7+ Kxf7) 40. Qf5 $17 Qc7 $2 (40... Qc6 $17 {aiming for ...Qf6.} 41. Qxe5+ Qe6 42. Qxh5 Qf6 43. Qh7+ Kd6) 41. Qh7+ $1 $11 ({Much worse is} 41. Qxh5 Qd6 $17) 41... Kd6 42. Qh6+ {Precision: White = 38%, Black = 62%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "3"]
[White "Shimanov, Alex"]
[Black "Li, Ruifeng"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2642"]
[BlackElo "2574"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,63,26,25,0,0,0,17,7,2,0,0,0,0,-25,0,0,0,0,19,-5,-6,-96,-95,-95,-86,-86,-95,-92,-91,-86,-92,-72,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 {[%cal Be7e6,Be6e5][%mdl 32]} 6. Bf4 d6 7. Ndb5 e5 8. Bg5 a6 9. Na3 Be7 10. g3 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6} (10. Bxf6 Bxf6 11. e3 O-O 12. Be2 e4 13. Qd2 Bf5 14. Nd5 Be5 15. Nb1 Be6 16. Nbc3 f5 17. Rd1 Rb8 18. b3 Kh8 19. Nf4 Bf7 20. h4 Ne7 21. g3 Rc8 {½-½ (20) Neiksans,A (2628)-Tazbir,M (2517) Finland 2017}) 10... O-O {LiveBook: 3 Games} 11. Bxf6 Bxf6 12. Bg2 Be6 (12... e4 $5) 13. O-O Rc8 14. Nd5 Bg5 $146 ({Predecessor:} 14... Bxd5 15. Bxd5 Qb6 16. Qd2 e4 17. Rab1 Rfe8 {½-½ (24) Duong,T (2366)-Hebert,J (2460) Quebec 2003}) 15. e3 f5 16. Qb3 (16. f4 $5 {[%cal Rf4g5]} Bf6 17. Qd2 $11) 16... Na5 17. Qb4 e4 18. Rfd1 Rc5 19. Rac1 {[#]} (19. h4 {looks sharper.} Bh6 20. Rac1 g6 21. b3 Rf7 22. Nf4) 19... Nxc4 $1 {[%mdl 512]} 20. Nf4 (20. Bf1 $11 {remains equal.} Ne5 21. Rxc5 dxc5 22. Qxb7) (20. Nxc4 Bxd5) 20... Bxf4 $1 $17 21. Nxc4 {Qxc5! is the strong threat.} Bg5 {Threatens to win with ...Qc7.} 22. Bf1 Qc7 {Strongly threatening ...Be7.} 23. Rxd6 Qxd6 24. Nxd6 Rxc1 25. Qxb7 {[#]} f4 ({Worse is} 25... Bxa2 26. Qxa6 Bd5 27. Qb5 $16) (25... Rd8 $1 $17 {[%cal Rd8d6]} 26. Qxa6 Be7 27. Nxe4 Bc8) 26. gxf4 $11 {The position is equal.} ({Much weaker is} 26. exf4 Bh3 $17) 26... Bh3 $1 {[%csl Gh3][%cal Rc1f1]} 27. Qb3+ $1 Kh8 {[%csl Gh3][%cal Rc1f1]} 28. Nf7+ {[#]} Rxf7 $1 {[%csl Gh3][%cal Rc1f1][%mdl 512]} 29. Qb8+ (29. Qxf7 Rxf1#) 29... Rc8 30. Qb3 Rc1 {[%csl Gh3][%cal Rc1f1]} 31. Qb8+ Rc8 32. Qb3 {Precision: White = 60%, Black = 70%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "3"]
[White "Stukopin, Andrey"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2586"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,104,0,0,0,14,4,46,41,53,39,66,68,64,43,37,29,29,28,73,31,43,15,17,20,21,0,19,18,23,0,0,0,7,0,31,27,64,58,58,68,71,31,43,0,112,116,106,110,81,8,8,4,71,71,73,0,0,-21,-8,-8,-8,-207,-206,-205,-160,-562,-559,-506,-410,-29978,-29979,-29979,-29980,-29980,-29981,-29981,-29982,-29982,-29983,-29983,-29984,-29984,-29985]} 1. Nf3 d5 2. g3 Bg4 3. Bg2 Nf6 4. c4 c6 5. O-O e6 6. cxd5 exd5 7. d3 Nbd7 8. Qc2 Bd6 {A11: English Opening: 1...c6} 9. e4 O-O 10. Nc3 Re8 11. h3 Bxf3 12. Bxf3 dxe4 {LiveBook: 6 Games} 13. dxe4 Bb4 (13... Qe7 14. Bg2 Bc5 15. Kh2 Bd4 16. Bf4 Qc5 17. Rad1 Rad8 {1-0 (42) Rapport,R (2720)-Gretarsson,H (2572) Reykjavik 2016}) 14. Rd1 Qa5 $146 ({Predecessor:} 14... Qe7 15. Re1 Rad8 16. Bg2 Nc5 17. Be3 Qe6 {0-1 (54) Hausrath,D (2450)-Michielsen,J (2277) Germany 2011}) 15. Bd2 Nc5 16. Bg2 Ne6 17. a3 Bf8 18. Nd5 Qd8 19. Nxf6+ Qxf6 20. Bc3 Qg6 21. Rac1 Rad8 22. Kh2 Bc5 23. b4 Bd4 24. f4 Bxc3 25. Qxc3 {Strongly threatening f5.} Qh5 26. Rxd8 Rxd8 27. Qe3 Nd4 28. g4 $40 {[%mdl 128] Black needs to defend precisely.} Qb5 29. Rd1 Qc4 30. e5 b6 31. f5 c5 32. bxc5 (32. Qg5 Re8 $11) (32. Rc1 $5 {[%cal Rc1c4]} Qe2 33. Qxe2 Nxe2 34. Rc4 $14) 32... bxc5 33. Rb1 Ne2 (33... h6 $1 $11 {remains equal.}) 34. Rb7 $16 {And now e6 would win.} Nf4 35. Qe4 Qd4 36. Qxd4 (36. Rxa7 $16 {Hoping for Ra8.} Nxg2 37. Ra8) 36... cxd4 {[%mdl 4096] Endgame KRB-KRN} 37. Bf3 ({Don't blunder} 37. Rxa7 $2 Nxg2 38. e6 (38. Kxg2 $2 d3 $19) 38... fxe6 $19) 37... g5 (37... Nd3 $11) 38. Rxa7 d3 39. Kg3 ({White should play} 39. Ra6 $16) 39... d2 $11 40. f6 h5 ({Much weaker is} 40... Ne6 $6 41. Bd1 $16) 41. Bd1 $1 ({Avoid the trap} 41. gxh5 $2 Rd3 $19) 41... h4+ 42. Kf3 $2 (42. Kh2 $1 $11 {and White has nothing to worry.}) 42... Nxh3 $19 43. a4 Nf4 44. a5 $2 (44. Rb7 $17) 44... Rd3+ 45. Kf2 {[#] Ra8+ is the strong threat.} h3 $1 {[%cal Rh3h2] ( -> ...h2)} 46. Kg1 (46. Ra8+ $19 Kh7 47. e6 Nxe6 48. a6) 46... Rg3+ {Black mates.} 47. Kf2 {[#]} h2 $1 {[%mdl 512]} 48. Ra8+ Kh7 49. Kxg3 h1=Q {[%csl Gf4][%cal Rh1g2]} 50. Bc2+ Ng6 51. Rd8 Qe1+ 52. Kf3 Kh6 {Precision: White = 44%, Black = 53%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.17"]
[Round "3"]
[White "Ramirez, Alejandro"]
[Black "Nyzhnyk, Illya"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2550"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,138,0,11,14,12,11,15,0,0,0,0,0,10,0,6,0,0,-1,0,-2,0,0,-5,-7,-11,-18,-17,-41,-41,-42,-42,-41,0,0,0,-41,-40,-72,-72,-72,-72,-88,-76,-93,-79,-110,-110,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-125,-99,-125,-125,-125,-99,-99,-99,-99,-8,-8,-8,-8,-8,-8,-8,-8,-8,-19,-34,-52,-63,-129,-129,-129,-129,-129,-129,-189,-189,-189,-189,-189,-189,-606,-29953,-29966,-29967,-29975,-29976,-29976,-29977,-29977,-29978,-29978,-29978,-29978,-29979,-29979,-29980,-29982,-29983,-29982,-29982]} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 dxc4 6. Bxc4 Nf6 7. O-O O-O 8. Nc3 Nc6 9. Bg5 h6 {D20: Queen's Gambit Accepted: 3 e3 and 3 e4} 10. Bh4 Bg4 11. h3 (11. Bb3 Bxf3 12. Qxf3 Nxd4 13. Qxb7 Rb8 14. Qxa7 Rb4 15. Bg3 Nxb3 16. axb3 Rxb3 17. Bxd6 Qxd6 18. Rfd1 Qb6 19. Qxb6 Rxb6 20. Ra2 Rfb8 21. Rd2 Rb4 {½-½ (21) Baramidze,D (2605)-Piorun,K (2532) Germany 2015}) 11... Bxf3 12. Qxf3 Nxd4 {LiveBook: 9 Games} 13. Qxb7 Nf5 14. Bxf6 $1 Qxf6 15. Ne4 Qe5 {[%csl Gd6][%cal Re5h2] [#]} 16. Nxd6 Nxd6 17. Qc6 Qxb2 18. Rab1 $146 ({Predecessor:} 18. Qxc7) 18... Qd2 19. Bd5 Rae8 20. Rfd1 Qa5 21. Rbc1 Re7 22. Qc5 Qb6 23. a4 Rfe8 24. Kh2 Ne4 $36 {[%mdl 2048] Black has the initiative.} 25. Bxe4 Rxe4 26. a5 Qxc5 27. Rxc5 $15 {[%mdl 4096] Endgame KRR-KRR} R4e5 28. Rxc7 Rxa5 29. Rdd7 Rf5 30. Rxa7 Re2 31. Re7 Rexf2 {Threatens to win with ...Rg5.} 32. Re8+ Kh7 {aiming for ...Rg5.} 33. Re3 g5 (33... R5f4 {keeps more tension.} 34. Rea3 h5 35. Ra2 h4 36. Rxf2 Rxf2 37. Kg1 Rf4) 34. Kg3 h5 {[%cal Bh6h5,Bh5h4][%mdl 32]} 35. Rf3 R2xf3+ 36. gxf3 $17 {KR-KR} h4+ 37. Kg2 Rf4 38. Ra6 f6 39. Ra5 Kg6 40. Rb5 Rd4 41. Ra5 Rd2+ 42. Kg1 Re2 43. Rb5 Kf7 44. Rb4 Re3 45. Kg2 Kg6 46. f4 Rg3+ 47. Kh2 g4 (47... gxf4 $17 {Hoping for ...Kg5.} 48. Rxf4 Kg5) 48. hxg4 $11 Rxg4 {With the idea ...f5.} 49. Kh3 f5 {White must now prevent ...Kh5.} 50. Rb8 Rxf4 {next ...Re4 is good for Black.} 51. Rg8+ Kf6 {Black wants to play ...Rf1.} 52. Re8 Re4 53. Ra8 Rg4 54. Rf8+ (54. Rh8 $15) 54... Kg5 $17 55. Rg8+ Kf4 56. Ra8 Rg1 57. Ra4+ (57. Rc8 $17 {might work better.}) 57... Kg5 $19 58. Ra3 Re1 59. Rb3 Re5 60. Ra3 $2 (60. Rb8) 60... f4 {[%cal Bf5f4,Bf4f3][%mdl 32]} 61. Ra8 {[#]Black mates.} f3 $1 62. Ra4 Re1 {[%cal Re1h1]} (62... f2 $2 63. Kg2 $19) 63. Ra5+ Kf4 {[%cal Re1h1]} 64. Ra4+ Ke3 65. Ra3+ Kf2 66. Rb3 Ke2 67. Rb2+ Kf1 68. Kh2 f2 69. Rb8 Ke2 {Precision: White = 52%, Black = 73%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.18"]
[Round "4"]
[White "Shimanov, Alex"]
[Black "Ramirez, Alejandro"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2642"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,51,14,27,20,38,10,10,0,0,0,0,0,0,0,0,0,0,0,33,30,37,0,0,0,31,0,0,0]} 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. e3 e6 5. b3 Nbd7 6. Bd3 Be7 7. O-O b6 8. Bb2 Bb7 9. Nc3 O-O 10. Qe2 Rc8 11. Rad1 Qc7 12. e4 dxe4 13. Nxe4 c5 {LiveBook: 5 Games. D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (13... Nxe4 14. Bxe4 Nf6 15. Bb1 Rfd8 16. Qc2 g6 17. Qc3 Ne8 18. Ne5 Bf6 19. c5 Bg7 20. Rfe1 Nf6 21. b4 Nd5 22. Qb3 a5 23. a3 axb4 24. axb4 Ba6 25. Rc1 bxc5 {½-½ (25) Caletka,R (2355)-Vlasak,L (2336) Czechia 2014}) 14. dxc5 {And now Nd6 would win.} bxc5 15. Neg5 h6 $146 ({Predecessor:} 15... Qc6 16. Nxh7 Rfe8 17. Nxf6+ Bxf6 18. Bxf6 Nxf6 19. Qe5 a5 20. Bc2 Qb6 21. Ng5 {½-½ (41) Gruenberg,H-Starck,B Stralsund 1975}) 16. Nxe6 Bxf3 $1 17. gxf3 fxe6 18. Qxe6+ Kh8 $1 {...Bd6 is the strong threat.} 19. Bf5 Nb8 20. Be5 Qb7 {[#] White must now prevent ...Rc6.} 21. Be4 $1 {[%cal Re4b7]} Nc6 (21... Rc6 $5 22. Bxc6 Nxc6 $11) 22. Rfe1 {[%mdl 1024] Hoping for Kg2. White has compensation.} Rfe8 $1 23. Qf7 Rf8 24. Qe6 {aiming for Re3.} Rfe8 $1 25. Qf7 Rf8 26. Qe6 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.18"]
[Round "4"]
[White "Stukopin, Andrey"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2586"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,96,45,43,50,39,50,42,46,31,30,20,21,24,30,23,52,48,68,40,50,50,69,75,74,58,46,34,62,40,49,51,70,64,83,-137,-138,-131,-124,-121,-120,-109,-121,-193,-176,-200,-200,-200,-140,-261,-232,-281,-281,-280,-271,-275,-272,-286,-286,-292,-293,-286,-286,-279,-274,-419,-426,-422,-422,-390,-390,-602,-595,-1106,-1088,-956,-947,-5289,-5265]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 Ne7 {B12: Caro-Kann: Advance Variation} 7. Be2 h6 8. O-O Bh7 (8... Qc7 9. Bd2 g5 10. c4 a5 11. Rc1 dxc4 12. Bxc4 Bg7 13. Re1 O-O 14. h4 g4 {1-0 (39) Vachier Lagrave,M (2804)-Tomashevsky,E (2716) Doha 2016}) 9. a4 Nf5 10. a5 a6 11. c4 {LiveBook: 8 Games} dxc4 12. Bxc4 Ne7 13. Qe2 Nd5 14. Nfd2 Nb4 $146 ({Predecessor:} 14... Be7 15. Ne4 {½-½ (56) Seyb,A (2383)-Grimm,J (1939) Wunsiedel 2014}) 15. Ne4 b5 16. axb6 Nxb6 {And now ...Bxe4 would win.} 17. f3 Nxc4 18. Qxc4 Qd5 19. Qc3 Qb5 20. Ra5 Qb6 21. Bd2 Be7 22. Rfa1 O-O 23. Qc4 Rab8 24. Nbc5 {aiming for Nd7.} Rfd8 $1 25. Bc3 Bxe4 26. fxe4 Nc2 {[#]} 27. Nxe6 $2 ({Stronger than} 27. Rxa6 Qb5 $17) (27. R1a2 $1 $16 {is necessary to keep the advantage.}) 27... fxe6 $17 28. Qxe6+ {[#]} Kh7 $1 29. Qxe7 Nxa1 30. Rxa1 Rxd4 {( -> ...Rd1#)} 31. Bxd4 (31. Kh1 $17) 31... Qxd4+ $40 {[%mdl 4224] Endgame KQR-KQR. Black wants a kill.} 32. Kh1 Rxb2 33. Qa3 Re2 34. h3 (34. Rc1 $17) 34... Qxe4 $19 {[%csl Ge2][%cal Re4g2]} 35. Qf3 Re1+ ({Weaker is} 35... Qxe5 36. Qd3+ Kg8 37. Qd8+ Kh7 38. Qd3+ g6 39. Qxa6 $17) 36. Rxe1 Qxe1+ {KQ-KQ} 37. Kh2 Qxe5+ 38. Kg1 Qd5 {Threatens to win with ...Qxf3.} 39. Qf1 a5 40. Qb1+ Kg8 41. Qb8+ Kf7 42. Qc7+ (42. Kh1 {was necessary.}) 42... Kg6 43. Qg3+ Kh7 44. Qc3 Kg8 45. Qa3 (45. Qc2 $142) 45... Qd4+ {Black is clearly winning.} 46. Kh1 a4 47. Qa2+ Kh8 48. Qf7 Qd3 {[%mdl 32768] Precision: White = 44%, Black = 92%. . An unexpected result.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.18"]
[Round "4"]
[White "Li, Ruifeng"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2574"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "160"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,160,-7,0,-27,0,0,0,0,15,0,0,0,0,0,0,0,0,0,0,-23,-15,-34,-21,-40,-33,-36,-37,-43,-39,-75,-47,-52,-40,-36,-41,-51,-35,-44,-43,-47,-52,-44,-60,-51,27,36,32,28,24,29,27,25,15,16,58,65,109,109,108,85,105,95,99,93,102,55,62,62,62,55,96,73,72,64,64,50,69,67,101,93,98,0,0,0,6,6,10,0,11,0,0,0,136,104,139,32,39,25,23,28,20,0,25,50,110,0,0,0,0,0,0,0,0,0,23,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 d6 6. h3 c5 7. O-O Qb6 8. Qc1 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} Nc6 9. c3 Be6 (9... Bf5 10. Nbd2 cxd4 11. exd4 Nd5 12. Bg5 {½-½ (45) Turner,M (2522)-Howell,D (2655) Reading 2017}) 10. Nbd2 cxd4 11. exd4 Rac8 12. Re1 Rfe8 {LiveBook: 4 Games} 13. Bh2 $146 ({Predecessor:} 13. Bg5 h6 14. Be3 Qd8 15. Nf1 Kh7 {0-1 (30) Kudischewitsch,D (2355)-Nedobora,M (2414) Herzliya 2016}) 13... Nd7 {[%cal Rc6d4]} 14. Qb1 Na5 15. Bd3 Nc4 (15... Bd5 {is more complex.} 16. a4 Qc6 17. Ra3 Qc7 18. Be4 Bxe4 19. Qxe4 Nf6) 16. Nxc4 Bxc4 17. Bxc4 Rxc4 18. Qd3 Rcc8 19. Re2 Nf6 20. Rae1 e6 21. Bf4 Nd5 {[%cal Bf6d5,Bd5e7,Be7f5][%mdl 32]} 22. Bc1 Qc6 23. Qe4 h6 24. Qh4 Ne7 25. Qf4 b5 26. Nh2 {[#]} b4 $1 {[%mdl 512]} 27. cxb4 Nf5 {And now ...h5 would win.} 28. Nf3 Qd5 29. a3 Rc4 30. Qe4 $1 {[%cal Re4d5]} Qxe4 31. Rxe4 Rec8 $1 32. Bd2 d5 {[%mdl 1024] Black has compensation.} 33. R4e2 h5 (33... Nxd4 $15 34. Nxd4 Bxd4) 34. Be3 $1 $11 h4 ({Much worse is} 34... Nxd4 $6 35. Nxd4 Rxd4 36. Bxd4 $16) 35. Rd1 Bf6 36. Kf1 Kg7 37. Ke1 a6 38. Red2 Nd6 39. Ne5 Rc2 40. Nd3 R2c6 41. Re2 Nc4 42. Nc5 g5 43. Bc1 Nd6 44. b3 Nf5 45. Bb2 Kg6 46. Rc2 Kh5 47. Ke2 g4 48. hxg4+ Kxg4 49. Rdd2 Bg5 50. Rd3 Rg8 51. Rcc3 Kh5 52. Nd7 (52. Kf1 $16) 52... Rd6 $1 {[%cal Rd6d7]} 53. Ne5 Bf6 54. Kf1 Nxd4 55. Nxf7 Rd7 {Threatens to win with ...Nf5.} 56. Rc5 Rg4 57. f3 Rg8 (57... Rg3 $1 $11) 58. Bxd4 Bxd4 {[#]} 59. Rxd4 ({White has to play} 59. Nh6 $1 $16 {[%cal Rh6g8]} Kxh6 60. Rxd4) 59... Rxf7 $16 {[%mdl 4096] Endgame KRR-KRR} 60. Rd3 {Strongly threatening Rc6.} Rfg7 61. Rd2 {Hoping for Rc6.} Rg3 62. Rc3 h3 63. gxh3 Rxh3 {[#]} (63... Kg6 $14) 64. Rg2 ({White should try} 64. Re3 $1 $16) 64... Rh1+ $1 $11 65. Kf2 Rxg2+ 66. Kxg2 {KR-KR} Ra1 67. a4 Ra3 68. Kf2 {Re3 is the strong threat.} d4 69. Rc4 e5 {The position is equal.} 70. Rc5 Rxb3 71. Rxe5+ Kg6 72. b5 axb5 73. Rxb5 Ra3 74. a5 Ra2+ 75. Ke1 d3 76. f4 {[%cal Bf3f4,Bf4f5][%mdl 32]} Kf6 77. Kd1 {With the idea f5.} Ke6 78. f5+ Kf6 79. Rd5 Kg5 80. Ke1 (80. a6 $5) 80... Kf6 {Precision: White = 56%, Black = 72%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.19"]
[Round "5"]
[White "Nyzhnyk, Illya"]
[Black "Li, Ruifeng"]
[Result "1-0"]
[ECO "A27"]
[WhiteElo "2610"]
[BlackElo "2574"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,93,34,30,27,27,26,87,79,95,85,102,57,62,61,59,60,58,54,63,62,64,50,75,73,77,35,44,47,61,18,50,51,74,76,83,74,152,139,154,154,159,159,159,159,159,159,159,159,159,158,144,132,178,150,162,127,121,119,125,75,80,85,88,87,156,164,164,170,173,102,4702,1956,4898,4898,4878,4168]} 1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. e4 Ne7 {A27: English Opening: Three Knights Variation} 8. Be3 O-O (8... d6 9. Bd4 Bxd4 10. Qxd4 O-O 11. c5 dxc5 12. Qxc5 Qd6 13. Qxd6 cxd6 14. O-O-O Rd8 15. Rd2 Be6 16. Be2 Rd7 {1-0 (44) Aronian,L (2770)-Andreikin,D (2723) Sochi 2015}) 9. Bd4 d6 10. Bxg7 Kxg7 {LiveBook: 3 Games} 11. Qd4+ f6 12. c5 Be6 (12... dxc5 $1 $11 13. Qxc5 Qd6 14. Qxd6 cxd6) 13. O-O-O $16 d5 14. Bd3 {[#]} dxe4 $146 ({Predecessor:} 14... Qe8 15. Rhe1 Qf7 16. e5 f5 {1-0 (49) Knaak,R (2525)-Ermenkov,E (2520) Zinnowitz 1985}) 15. Bxe4 (15. Qxe4 {with more complications.} Bd5 16. Qa4 Rf7 17. Rhe1 Qf8 18. f3) 15... Qxd4 16. Rxd4 f5 17. Bf3 Kf6 18. Rhd1 Rfb8 19. b3 a5 20. Kb2 h5 21. g3 Ra7 22. Rd8 Raa8 23. Rxb8 Rxb8 24. Rd4 Bd5 25. Bxd5 Rd8 26. Ra4 {Bc4 is the strong threat.} Nxd5 27. a3 Nxc3 (27... Ke5 $142) 28. Kxc3 {[%mdl 4096] Endgame KR-KR} Rd1 29. Rxa5 Ke6 30. Ra7 Kd7 31. Ra4 {Black must now prevent Rd4+.} Rc1+ 32. Kd2 Rxc5 33. Rd4+ Kc8 {[#]} 34. f4 $1 Ra5 35. a4 Kb7 36. Rd8 Ra6 37. Kd3 c5 38. Rd5 Rb6 39. Kc4 ({Much weaker is} 39. Rxc5 $6 Rxb3+ 40. Kc4 Ra3 $11) 39... Rb4+ {[#]} 40. Kc3 $1 Kc6 41. Re5 Kd6 (41... h4 $142) 42. Re8 Rb6 43. Ra8 Kd5 44. a5 (44. Rd8+ $18 Rd6 45. Rxd6+ cxd6 46. b4) 44... Re6 $2 {[%mdl 8192]} (44... Rb5 $16 45. a6 Ra5) 45. a6 $18 {[%cal Ba5a6,Ba6a7][%mdl 32] White is clearly winning.} Re3+ 46. Kd2 Rxb3 47. a7 {Precision: White = 83%, Black = 43%.} 1-0

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.19"]
[Round "5"]
[White "Sevian, Samuel"]
[Black "Shimanov, Alex"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2585"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,13,36,35,41,46,48,25,100,96,108,101,108,102,120,83,98,70,89,68,112,106,113,103,112,64,77,75,71,71,64,25,51,0,66,29,112,116,101,98,84,0,70,0,93,51,126,85,88,78,113,70,234,215,254,259,212,206,199,189,192,189,355,265,367,364,305,295,408,395,1140,1057,1030,995]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} c6 2. d4 d5 3. e5 Bf5 4. h4 Qc7 (4... h5 5. Bd3 Bxd3 6. Qxd3 e6 7. Bg5 Be7 8. Nf3 Nh6 9. Nc3 Nf5 10. Ne2 c5 11. dxc5 Qa5+ 12. c3 Qxc5 13. Bxe7 Kxe7 14. Ned4 Nxd4 15. Nxd4 {0-1 (32) Adams,M (2761)-Svidler,P (2741) Shenzhen 2017}) 5. Nc3 h6 6. g4 {B12: Caro-Kann: Advance Variation} Bh7 7. e6 fxe6 8. f4 $146 {[%cal Bf2f4,Bf4e5][%mdl 32] White is slightly better.} ({Predecessor:} 8. Bd3 e5 9. Bxh7 Rxh7 10. dxe5 Qxe5+ 11. Be3 Qd6 12. Qd3 {½-½ (40) Van Foreest,J (2493)-Motylev,A (2653) Moscow 2015}) 8... e5 (8... c5 $11) 9. fxe5 $16 e6 10. Bd3 Bxd3 11. Qxd3 Na6 12. a3 c5 13. Be3 O-O-O $1 14. Nge2 c4 15. Qd2 Qd7 16. Nf4 {Black must now prevent Ng6.} Ne7 17. a4 Kb8 18. Nb5 Rg8 19. h5 Nc7 20. Qa5 Na6 $1 21. Qd2 Nc7 $1 22. Rf1 $36 {[%mdl 2048] White has the initiative.} Rc8 (22... Nxb5 $11 {keeps the balance.} 23. axb5 g5 24. hxg6 Nxg6) 23. Nd6 Rd8 24. Nf7 Re8 25. Nd6 Rd8 $1 26. Nf7 (26. Rf3 $14) 26... Rc8 (26... Re8 $11 {remains equal.}) 27. Ng6 Nc6 (27... Nxg6 $14 28. hxg6 Be7) 28. g5 hxg5 29. Bxg5 Na6 {[%cal Bc7a6,Ba6b4,Bb4a2][%mdl 32]} 30. Rf2 Nxd4 $2 {[#]} (30... Re8 $14) 31. Qxd4 $18 {aiming for Nd6.} Bc5 32. Qf4 Bxf2+ 33. Kxf2 Nb4 {[#]} 34. Rc1 $1 Qxa4 35. Ne7 Rcf8 $2 (35... Na2 36. Rd1 Nb4) 36. Kg2 Na2 37. Rf1 Qxc2+ 38. Rf2 Qh7 39. Nxg8 Qxg8 $2 (39... Qxh5 40. Ne7 Nb4) 40. Be7 Re8 41. Qg5 {Precision: White = 57%, Black = 45%.} 1-0

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.19"]
[Round "5"]
[White "Ramirez, Alejandro"]
[Black "Stukopin, Andrey"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2550"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,68,29,19,30,-22,-9,-24,-19,-17,-11,-25,-22,-17,-22,-20,-21,-12,-13,-29,0,0,0,0,5,-39,0,0,0,-8,-3,-43,-46,-132,-132,-150,-156,-250,-145,-359,-297,-293,-295,-353,-347,-322,-320,-331,-301,-588,-586,-764,-762,-735,-730,-905,-896]} 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. a3 Nf6 6. Rb1 a5 7. d3 O-O 8. Bd2 {LiveBook: 12 Games. A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} (8. Bf4 d6 9. Qd2 Re8 10. Bh6 Bh8 11. h4 Ng4 12. h5 Nxh6 13. hxg6 hxg6 14. Qxh6 Bg7 15. Qh7+ Kf8 {1-0 (37) Kovalenko,I (2668)-Kotsur,P (2552) Almaty 2016}) 8... b6 9. b4 $146 (9. f4 $142) ({Predecessor:} 9. Nb5 Rb8 10. b4 axb4 11. axb4 Nxb4 12. Bxb4 cxb4 13. Rxb4 d5 14. Qc2 dxc4 15. Qxc4 Be6 {0-1 (30) Seifert,V-Feige,M Friedrichroda 1997}) 9... axb4 $11 10. axb4 {The position is equal.} cxb4 11. Nd5 $1 Nxd5 12. cxd5 Nd4 13. Nf3 {[%cal Bg1f3,Bf3d2,Bd2e4,Be4g5][%mdl 32]} Nb5 {...Nc3 is the strong threat.} 14. Bxb4 Nc3 15. Bxc3 $1 Bxc3+ 16. Nd2 b5 17. O-O b4 18. Ne4 Ra3 19. d6 exd6 20. Qc1 Qa5 {Hoping for ...Bb7.} 21. Qh6 Qe5 $36 {[%mdl 2048] Black fights for an advantage.} 22. Ng5 {[%csl Gg5][%cal Rh6h7] [#]} Qg7 23. Qh4 (23. Qxg7+ $15 Kxg7 24. Ne4) 23... b3 $17 {[%cal Bb4b3,Bb3b2][%mdl 32]} 24. Bd5 b2 25. Qf4 (25. Ne4 $17) 25... Ra5 (25... Qe5 $19 26. Qxe5 (26. Bxf7+ $2 Kg7 $19) 26... Bxe5) 26. e4 $2 (26. Qc4 $17) 26... h6 27. Nf3 Ba6 28. Rfd1 Bb5 29. Bb3 Ra1 30. Qe3 Rc8 31. d4 $2 (31. Kg2) 31... Ra3 $19 {Black is clearly winning.} 32. Bc2 Bb4 33. Bd3 Bxd3 34. Rxd3 {[#]} Rc1+ $1 {[%mdl 512] Precision: White = 34%, Black = 69%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.20"]
[Round "6"]
[White "Shimanov, Alex"]
[Black "Stukopin, Andrey"]
[Result "1-0"]
[ECO "E10"]
[WhiteElo "2642"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,117,46,40,0,0,0,18,21,21,9,39,31,40,41,35,44,63,64,72,54,86,93,97,90,87,82,94,93,86,89,83,43,23,12,12,12,12,12,12,15,10,19,17,10,76,0,4,13,58,0,0,0,0,0,0,0,2,0,2,0,0,0,0,0,0,0,0,0,0,5,55,64,78,0,0,0,25,0,0,0,1872,1425,12840,12840,12842,12843,12845,12846,12850,12851,12851,29942,12851,29967,12851,29970,12851,29959]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 c6 7. Qc2 Nbd7 8. O-O O-O 9. Rd1 a5 {E11: Bogo-Indian} (9... Ne4 10. Bf4 g5 11. Bc1 f5 12. Nc3 Qe8 13. Nxe4 fxe4 14. Nxg5 Nf6 15. f3 Qh5 16. Nh3 e5 17. Nf2 exd4 18. Rxd4 {½-½ (59) Cheparinov,I (2689)-Aronian,L (2785) Doha 2016}) 10. Bf4 b5 11. c5 Nh5 {LiveBook: 9 Games. White is slightly better.} 12. Bd6 Bxd6 13. cxd6 Nb8 14. Nbd2 {[#]} Qxd6 $146 ({Predecessor:} 14... f5 15. Nb3 Qxd6 16. a4 b4 17. Ne5 Bd7 {½-½ (52) Meier,G (2648)-Postny,E (2577) Copenhagen 2010}) 15. e4 f5 16. e5 {[%mdl 1024] White has compensation.} Qe7 17. a4 $36 {[%mdl 2048] White has the initiative.} b4 18. Nb3 Bd7 19. Rac1 Rc8 20. Qc5 Qxc5 21. Rxc5 Rc7 22. Rxa5 Rxa5 23. Nxa5 Ra7 24. Nb3 Rxa4 25. Nc5 Ra2 26. Ng5 g6 $1 27. Ngxe6 Bxe6 28. Nxe6 Ng7 29. Nd8 Kf8 30. Nxc6 Nxc6 31. Bxd5 Ra6 32. f4 g5 (32... Nd8 $11 {remains equal.}) 33. Bc4 (33. fxg5 $16 Ne8 34. Bc4) 33... Rb6 34. d5 gxf4 (34... Na5 $5 {[%cal Ra5c4]} 35. Bd3 gxf4 $14) 35. gxf4 (35. dxc6 $14 Rxc6 36. b3) 35... Na5 $11 36. Be2 Nb3 37. Bc4 Na5 38. Be2 Nb3 39. h3 Ke8 40. Kh2 Kd8 41. h4 Rg6 42. Kh3 h5 43. Kh2 Rg4 44. Bxg4 fxg4 45. Rd3 Nc5 (45... Nc1 $5 {[%cal Rc1d3]} 46. Rd4 Nf5 47. Rxb4 Ne2 $16) 46. Rd4 g3+ {[#]} 47. Kg2 ({White should try} 47. Kg1 $1 $16 Nf5 48. Rxb4) 47... Nf5 48. Rxb4 Nd3 49. Re4 {Kf3 is the strong threat.} Nxb2 (49... Nc5 $5 {[%cal Rc5e4]} 50. Rb4 Nd3 $11) 50. d6 {And now Kf3 would win.} Kd7 $2 {[%mdl 8192] [#]} (50... Ke8 $11) 51. e6+ $1 $18 Kxd6 {[#]} 52. e7 $1 {[%cal Re7e8][%mdl 512]} Nxe7 53. Rb4 Nd5 54. Rxb2 Nxf4+ 55. Kxg3 Ke5 56. Kf3 Nd5 57. Rg2 Nf6 58. Rg5+ Ke6 59. Ra5 {Precision: White = 72%, Black = 57%.} 1-0

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.20"]
[Round "6"]
[White "Nyzhnyk, Illya"]
[Black "Sevian, Samuel"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2610"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,80,7,8,15,0,13,0,0,0,0,0,0,-19,0,-2,0,-10,0,0,0,-39,-45,-108,0,0,0,-24,0,-59,-51,-78,-79,-98,-93,-64,-18,-55,-59,-64,-20,-62,-69,-69,-62,-62,-63,-67,-56,-8,-10,-169,-169,-170,-165,-185,-181,-172,-174,-171,-135,-415,-402,-587,-573]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 Be7 5. Bb2 O-O 6. Be2 b6 {A13: English Opening: 1...e6} (6... c5 7. cxd5 Nxd5 8. Nc3 Nc6 9. O-O b6 10. d4 Nxc3 11. Bxc3 Bf6 12. Rc1 cxd4 13. Nxd4 Nxd4 14. Bxd4 Bxd4 15. Qxd4 Qxd4 16. exd4 Bb7 17. Rc7 {½-½ (32) Topalov,V (2761)-Nakamura,H (2787) Paris 2016}) 7. cxd5 exd5 8. O-O Bb7 9. d4 Nbd7 10. Nc3 {LiveBook: 3 Games} c6 11. Qc2 Re8 12. Bd3 Bd6 13. Rfe1 Rc8 14. Rac1 g6 15. Qb1 $146 ({Predecessor:} 15. Ne2 Ne4 16. Ng3 f5 17. Re2 Qe7 {½-½ (37) Berescu,A (2461)-Malakhatko,V (2559) Abu Dhabi 2013}) 15... Bf8 16. h3 a5 17. Nd2 Bg7 18. Ba3 Nf8 19. b4 axb4 20. Bxb4 (20. Qxb4 $15 Ne6 21. Nf3) 20... Ne6 (20... c5 $1 $17 {[%cal Rc5b4]} 21. dxc5 bxc5) 21. Nf3 $11 Ra8 22. a4 c5 23. Ba3 (23. Bxc5 $1 $11 bxc5 24. Qxb7) 23... Bc6 $15 24. dxc5 bxc5 {[%cal Bb6c5,Bc5d4,Bd4d3,Bd3e2][%mdl 32]} 25. Bb5 Bxb5 26. Qxb5 d4 27. exd4 cxd4 28. Ne2 Qd7 {Threatens to win with ...Qxb5.} (28... Ne4 {feels hotter.} 29. Red1 h5 30. Bb4 Rb8 31. Qc4 Qb6) 29. Qxd7 Nxd7 30. Rcd1 {[%cal Re2d4]} Nb6 $1 $36 {[%mdl 2048] Black fights for an advantage.} 31. Bb2 d3 $1 32. Bxg7 dxe2 33. Rb1 $1 Nxa4 ({But not} 33... Kxg7 34. Rxb6 Nf4 35. Rd6 $17) 34. Ba1 $2 (34. Bd4 $1 $11 {and White is okay.}) 34... Nf4 $1 $19 {[%cal Rf4d3] Hoping for ...Nd3.} 35. Ne5 {[#]} Nc5 $1 36. g3 Nxh3+ 37. Kg2 {[#]} Rxa1 $1 38. Rxa1 {Black must now prevent Ng4.} Rxe5 39. f4 $2 {[%mdl 8192]} (39. Ra3 $17 {keeps fighting.} Rh5 40. Rxe2) 39... Re3 40. Kxh3 (40. Ra8+ $142 Kg7 41. Rd8) 40... Nd3 {Precision: White = 37%, Black = 59%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.20"]
[Round "6"]
[White "Li, Ruifeng"]
[Black "Ramirez, Alejandro"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2574"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,80,35,44,18,27,-1,0,-1,13,0,0,-25,-15,-23,-22,-52,-49,-255,-239,-262,-213,-269,-253,-266,-247,-251,-260,-251,-256,-279,-289,-318,-352,-402,-420,-582,-484,-482,-469,-490,-480,-469,-322,-322,-322,-415,-413,-650,-640,-735,-618,-739,-714,-699,-666,-1278,-1024,-1761,-1175,-5098,-5591,-29966,-29967]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. a3 b5 8. Nxc6 Qxc6 9. Be2 Bb7 {B49: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 7 Be2} 10. O-O (10. Qd2 Rc8 11. O-O Nf6 12. Bf3 Qc7 13. Bf4 e5 14. Bg5 Be7 15. Bxf6 Bxf6 16. Rfd1 Rd8 17. Qe2 {1-0 (45) Hou,Y (2663)-Potkin,V (2597) Almaty 2016}) 10... Rc8 {LiveBook: 6 Games} 11. f4 (11. Qd2 {feels hotter.} Nf6 12. Rfd1 Qc7 13. Bf4 e5 14. Bg3) 11... Bc5 {The position is equal.} 12. Bxc5 (12. Qd3 {is interesting.} Ne7 13. Bf3 Qb6 14. Bxc5 Qxc5+ 15. Rf2) 12... Qxc5+ 13. Kh1 d6 14. Bf3 Nf6 15. Qe1 $146 ({Predecessor:} 15. e5 Bxf3 16. Qxf3 dxe5 17. fxe5 Qxe5 18. Rae1 Qc7 19. Qh3 Qe7 20. Rxf6 Qxf6 21. Nd5 Qf2 22. Rg1 Qf5 {0-1 (24) Spiller,P-Stuart,P New Zeeland 1982}) 15... e5 16. Rd1 O-O 17. f5 b4 18. Nd5 $2 (18. axb4 $15 Qxb4 19. Rb1) 18... Bxd5 $1 $19 19. axb4 Qxc2 20. Rf2 Qb3 21. exd5 {[#]} e4 $1 {[%cal Be5e4,Be4e3][%mdl 544]} 22. Be2 (22. Bxe4 Rfe8) 22... Rc2 (22... Nxd5 23. Bxa6 Rc7 24. Re2 $17) 23. Rc1 e3 (23... Qxb2 24. Rxc2 Qxc2 25. Bxa6 $19) 24. Rf3 Re8 ({Don't play} 24... Qxb2 25. Rxc2 Qxc2 26. Rxe3 $19) ({Less strong is} 24... Rxb2 25. Bxa6 Qxd5 26. Qxe3 $17) 25. Rxc2 Qxc2 26. Kg1 Nxd5 27. Bxa6 Qxb2 28. Bc4 Qd2 29. Rf1 {Strongly threatening Qxd2.} Nc3 30. f6 Qxe1 31. Rxe1 {[%mdl 4096] Endgame [#] KRB-KRN} d5 $1 {[%cal Rd5c4,Bd6d5,Bd5d4][%mdl 32]} ({Not} 31... gxf6 32. Rc1 $17) 32. Ba6 d4 33. fxg7 (33. Bd3 $142 Nd5 34. Kf1) 33... Rb8 34. g4 Rxb4 35. Kg2 Rb2+ 36. Kg3 Rf2 37. Bd3 Kxg7 38. Ra1 Rd2 39. Bc4 e2 40. Re1 d3 {Precision: White = 16%, Black = 82%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.21"]
[Round "7"]
[White "Shimanov, Alex"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2642"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,60,43,48,27,27,31,25,32,28,49,0,0,0,0,0,0,0,0,-10,0,6,8,8,9,6,5,2,8,11,14,0,0,0,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. Qb3 Nc6 6. Bg5 a5 {E22: Nimzo-Indian: 4 Qb3} 7. a3 a4 8. Qc2 (8. Qa2 Bxc3+ 9. bxc3 Na5 10. e3 Nb3 11. Rd1 h6 12. Bxf6 Qxf6 13. cxd5 exd5 {0-1 (47) Krysa,L (2491)-Alonso Rosell,A (2537) Barcelona 2017}) 8... Bxc3+ {White has an edge.} 9. bxc3 Na5 $146 ({Predecessor:} 9... h6 10. Bh4 g5 11. Bg3 Ne4 12. e3 h5 13. h4 Nxg3 14. fxg3 {0-1 (72) Cerasi,U (2019)-Braeunlin,K (2145) Ditzingen 2014}) 10. Qxa4+ (10. e4 $5 dxe4 11. Bxf6 Qxf6 12. Qxe4 $11) 10... Bd7 11. Qb4 Nxc4 12. e3 Ra4 13. Qxb7 Nxa3 14. Rc1 Qa8 15. Qxa8+ $1 Rxa8 16. Nd2 O-O 17. c4 dxc4 18. Nxc4 Nxc4 19. Bxc4 Rfc8 20. Bd3 (20. Bxf6 $5 gxf6 21. d5 $11) 20... c5 21. dxc5 Ra5 (21... Ra3 $5 {[%cal Ra3d3]} 22. Bxf6 gxf6 $11) 22. Bxf6 gxf6 {The position is equal.} 23. O-O Raxc5 24. Rxc5 Rxc5 $11 {[%mdl 4096] Endgame KRB-KRB} 25. Be4 Bc6 26. Bxc6 Rxc6 27. g3 Kg7 28. Kg2 f5 29. Rd1 Rc2 30. Rd7 Kg6 {Precision: White = 78%, Black = 85%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.21"]
[Round "7"]
[White "Stukopin, Andrey"]
[Black "Li, Ruifeng"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2586"]
[BlackElo "2574"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,74,14,8,13,9,38,20,28,22,28,34,20,28,68,68,68,63,63,57,70,47,21,13,562,577,562,547,530,96,90,90,92,92,85,-184,-208,-282,-269,-260,-208,-220,-202,-200,-144,-204,-154,-917,-910,-892,-862,-868,-894,-862,-813,-808,-787]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. h3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} Be7 9. f4 Nc6 {[%cal Bb8c6,Bc6b4,Bb4c2][%mdl 32]} 10. f5 Bxb3 11. axb3 {LiveBook: 3 Games} Nb4 12. g3 d5 13. exd5 Qc7 14. d6 Bxd6 {Threatens to win with ...e4.} 15. Nb5 $1 {[%cal Rb5c7]} Nxc2+ {[#]} 16. Ke2 $146 axb5 17. Rxa8+ Ke7 18. Rxh8 Nxe3 19. Kxe3 Qc5+ $1 20. Ke2 Ne4 21. Qd3 Qf2+ $2 {[%mdl 8192]} (21... Nxg3+ $1 $11 {and Black stays safe.} 22. Kd2 (22. Qxg3 Qc2+ 23. Ke3 Bc5+ 24. Kf3 Qd1+ 25. Be2 Qxh1+ 26. Qg2 e4+ 27. Kg3 Bd6+ 28. Kf2 Bc5+ 29. Kg3 Bd6+ 30. Kf2 Bc5+ 31. Kg3 $11) 22... e4) 22. Kd1 $18 Nxg3 23. f6+ $1 gxf6 {[#]} 24. Qd5 $2 (24. Qxb5 $3 $18 {[%csl Gb5][%cal Rh8e8][%mdl 512]} f5 25. Qxb7+ Kf6 26. Bc4 (26. Rxh7 Qd4+ 27. Kc2 Qf2+ 28. Kd1 Qd4+ 29. Kc2 Qf2+ 30. Be2 Qxe2+ 31. Kb1 Qd3+ 32. Ka2 Nxh1 $16) 26... Nxh1 27. Qxf7+ Kg5 28. Qg7+ Kf4 29. Qh6+ Ke4 30. Qxd6 Qxb2 31. Bd5+ Ke3 32. Qc5+ Kd3 33. Qc4+ Ke3 34. Qc5+ Kd3 35. Qc4+ Ke3 36. Qc1+ Qxc1+ 37. Kxc1) 24... Nxf1 $16 25. Qxb7+ Ke6 {[%csl Gf1][%cal Rf2d2] [#]} 26. Qc8+ $1 ({But not} 26. Re8+ $6 Kf5 $11) 26... Kd5 {[%csl Gf1][%cal Rf2d2] [#]} 27. Qa8+ $2 {[%mdl 8192]} (27. Qc3 $1 $16 {[%cal Rc3d3] And now Qd3+ would win.} e4 28. Rd8) 27... Kd4 $19 {[%csl Gf1][%cal Rf2d2][%mdl 1024] Black has strong compensation.} 28. Qa7+ Bc5 {[%csl Gf1][%cal Rf2d2]} 29. Rd8+ ({Don't blunder} 29. Qd7+ $2 Ke3 $19) 29... Ke4 30. Qb7+ Kf4 31. Kc1 Qe1+ $40 {[%mdl 128] Black goes for the king.} 32. Kc2 f5 {( -> ...Ne3+)} 33. b4 $2 (33. Rxf1+ $17 Qxf1 34. Qxf7) 33... Ne3+ {Black is clearly winning.} 34. Kb3 Qxb4+ 35. Ka2 Qa5+ 36. Kb1 Qxd8 37. Qxb5 Qd5 {Precision: White = 48%, Black = 93%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.21"]
[Round "7"]
[White "Ramirez, Alejandro"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2550"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,48,9,27,6,59,39,39,45,46,47,56,54,55,42,47,20,28,10,66,74,64,75,65,0,9,0,69,6,6,0,46]} 1. Nf3 d5 2. c4 e6 3. b3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O a5 7. Nc3 b6 8. Bb2 Bb7 9. d4 Nbd7 10. Ne5 c6 11. e4 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} Bb4 (11... Nxe4 $11 12. Nxe4 dxe4) 12. Nxd7 Nxd7 13. Qc2 $146 {White is slightly better.} ({Predecessor:} 13. Ne2 Be7 14. exd5 {½-½ (14) Lechtynsky,J (2407)-Kalod,R (2483) Czechia 2000}) 13... Rc8 14. Rfd1 Be7 15. Rac1 dxe4 16. Nxe4 Nf6 17. Nxf6+ (17. Ng5 $5 {[%cal Rd4d5]} h6 18. Ne4 $14) 17... Bxf6 18. c5 Ba6 ({Black should try} 18... b5 $11) 19. cxb6 $14 Qxb6 20. Qc5 ({Not} 20. Bxc6 $2 Bb7 $19) 20... Qb5 21. Qa7 (21. Bxc6 $14 Qe2 22. Qc2) 21... Ra8 $1 $11 {[%cal Ra8a7]} 22. Qc5 (22. Qc7 $11 Rfc8 23. Qd6) 22... Rac8 $1 $14 23. Bf1 (23. Bxc6 $14 Qe2 24. Qc2) 23... Qb7 $11 24. Bg2 ({Of course not} 24. Qxa5 Bxf1 25. Rxf1 Ra8 $15) 24... Qb5 {Precision: White = 39%, Black = 62%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.22"]
[Round "8"]
[White "Nyzhnyk, Illya"]
[Black "Ramirez, Alejandro"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2610"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,88,0,0,-7,-1,-14,-10,-27,-3,-14,-8,-7,0,-30,-23,-23,0,0,-5,-18,-14,-25,0,-56,-55,-116,-75,-87,-80,-89,-74,-154,-145,-147,-162,-160,-154,-188,-180,-210,-199,-193,-193,-220,-234,-223,-221,-216,-190,-232,-210,-212,-190,-191,-152,-170,-162,-181,-145,-191,-175,-187,-181,-183,-78,-83,0,-179,-181,-181,-180,-210,-198,-246,-247,-242,-234,-310,-316,-468,-413]} 1. g3 d5 2. Nf3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Nc6 6. c3 {A07: Réti Opening: New York and Capablanca Systems} (6. e4 dxe4 7. dxe4 Qxd1 8. Rxd1 Bg4 9. Be3 Nd4 10. Bxd4 exd4 11. Na3 O-O-O 12. h3 Bxf3 13. Bxf3 Ne7 14. Nc4 {0-1 (35) Caruana,F (2829)-Anand,V (2793) London 2014}) 6... Nge7 7. Qc2 a5 8. a4 {The position is equal.} O-O 9. e4 h6 10. Na3 Be6 11. Re1 Re8 $146 ({Predecessor:} 11... Qd7 12. Nd2 Rad8 13. exd5 Bxd5 {0-1 (33) Tringov,G (2365)-Lazic,M (2455) Skopje 1998}) 12. Nb5 Qd7 13. b3 Rac8 14. Ba3 d4 15. cxd4 exd4 16. Rec1 (16. Nd2 $11) 16... g5 $15 {[%cal Bg6g5,Bg5g4][%mdl 32]} 17. Qd1 (17. Nd2 $15) 17... g4 18. Ne1 Nb4 19. Bb2 Nec6 20. Na3 (20. Rc5 $142) 20... f5 $1 $17 21. exf5 Bxf5 22. Nc4 Bf6 23. Bxc6 Nxc6 24. Ba3 Re6 25. Ng2 Bg5 $1 26. Rc2 Rce8 $1 27. Qf1 Qh7 28. Rd1 Bg6 29. Rb2 Qf7 30. Rbb1 Qf3 31. Ne1 Qe2 32. Qxe2 Rxe2 33. Kf1 Kf7 34. Ra1 Bf5 35. Bb2 h5 36. Ng2 Rc2 (36... Nb4 $1 $19 {is more deadly.} 37. Bxd4 Bxd3) 37. Ne1 {[#]} Rce2 (37... Rxe1+ $1 $17 38. Kxe1 Ke6) 38. Ng2 $1 $19 {[#]} Nb4 $1 $36 {[%mdl 2048] Black has strong initiative.} 39. Bxd4 {And now Nce3 would win.} Bxd3 {[%csl Ge8][%cal Re2e1]} 40. Kg1 Bc2 {...Rd8 is the strong threat.} 41. Re1 Rxe1+ 42. Nxe1 Bxb3 43. Nxa5 Bd5 44. Bc3 (44. f4 $142 Bf6 45. Bxf6 Kxf6 46. Rb1) 44... Bf6 {Precision: White = 54%, Black = 74%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.22"]
[Round "8"]
[White "Sevian, Samuel"]
[Black "Stukopin, Andrey"]
[Result "0-1"]
[ECO "B66"]
[WhiteElo "2585"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,120,27,31,10,15,7,71,34,37,45,66,-13,34,-28,0,-45,-56,-71,-73,-72,-72,-80,-91,-80,-71,-69,-71,-162,-179,-180,-156,-175,-169,-173,-181,-178,-178,-166,-162,-241,-241,-282,-252,-284,-286,-238,-268,-341,-235,-248,-230,-222,-164,-553,-368,-368,-368,-368,-367,-367,-367,-367,-367,-367,-221,-746,-740,-735,-727,-702,-679,-665,-670,-670,-651,-644,-617,-598,-551,-493,-466,-700,-676,-12845,-12846,-12846,-12847,-12850,-12847,-12849,-12847,-12847,-12847,-12850,-12849,-12850,-12849,-12850,-12849,-12850,-29981]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 {[%cal Bd7d6,Bd6d5][%mdl 32]} 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Nxc6 bxc6 10. Bf4 d5 11. Qe3 Bb4 12. Be2 {B66: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 h6} O-O 13. e5 Nh7 (13... Nd7 $11) (13... Nd7 14. h4 c5 15. Bxh6 gxh6 16. Qxh6 Nxe5 17. Rh3 Bxc3 18. bxc3 Ra7 19. Rg3+ Ng6 20. h5 Qh4 21. Rg4 Qh2 22. Bd3 {1-0 (22) Karjakin,S (2785)-Ivanchuk,V (2747) Doha 2016}) 14. h4 {White is better.} (14. Ne4 $5) 14... Qa5 15. Rh3 Rb8 16. Rg3 ({Better is} 16. Bxh6 $1 $14 Rb7 17. Rg3) 16... Rb7 (16... Bc5 $5 {[%cal Rc5e3]} 17. Qf3 Rb7 $11) 17. Bd3 (17. Bxh6 $1 $14 f6 18. Rd4) 17... Bc5 {[#]} 18. Qf3 $146 ({Predecessor:} 18. Bxh7+ Kxh7 19. Qd3+ Kh8 {0-1 (55) Pruijssers,R (2539)-Stukopin,A (2509) Groningen 2013}) 18... f5 {[#] aiming for ...Rxb2!} 19. exf6 Nxf6 {Strongly threatening ...Qb4.} 20. Be5 Ne4 21. Qg4 Nxg3 22. Qxg3 Qb4 (22... Bxf2 23. Qg6 $16) 23. Ne2 Rxf2 24. Bxa6 {[#]} (24. a3 $17 {was necessary.} Qb6 25. Qg6) 24... Qe4 $1 $19 25. Bxb7 {[%csl Ge5][%cal Rg3g7]} Be3+ 26. Kb1 {[%csl Ge5][%cal Rg3g7]} Rxg2 $40 {[%mdl 128] White is in trouble.} 27. Bxc8 Rxg3 28. Bxg3 Qg4 29. Ba6 c5 {[%cal Bc6c5,Bc5c4][%mdl 32] And now ...c4 would win.} 30. a3 (30. Be5 $142) 30... c4 31. Bc8 Kf7 ({Not} 31... Qxe2 32. Bxe6+ Kh7 33. Rxd5 $15) 32. Rxd5 Qxe2 33. Rd7+ Ke8 34. Bd6 Qd1+ 35. Ka2 Qxc2 36. Rb7 Qd3 37. Be5 $2 (37. Bd7+ {nothing else works.} Kd8 38. Bb4) 37... Bd4 38. Bxd4 Qxd4 39. Bxe6 {[%mdl 4096] Endgame KQ-KRB} c3 40. bxc3 Qxc3 41. Bg8 Kf8 42. Rb8+ Ke7 43. Rb7+ $2 (43. Rb2) 43... Kd6 {Black is clearly winning.} 44. Rb6+ Kc5 45. Rb2 Qh3 46. Rb4 Qg2+ 47. Rb2 Qe4 48. Rb4 Qe2+ 49. Rb2 Qe1 50. Rc2+ Kd6 51. Rg2 (51. Rh2 $142 g5 52. hxg5 hxg5 53. Rh6+ Kc5 54. Rh2) 51... Qxh4 52. Rxg7 Qf2+ 53. Kb3 Qe3+ 54. Kc2 Qe4+ 55. Kc1 Qf4+ 56. Kc2 Qf5+ 57. Kd2 Qf6 58. Rh7 Qg6 59. Kc3 h5 60. Kd4 Qxg8 {Precision: White = 44%, Black = 77%.} 0-1

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.22"]
[Round "8"]
[White "Li, Ruifeng"]
[Black "Shimanov, Alex"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2574"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,60,9,7,0,0,6,0,-8,-8,-8,-2,-8,-10,-10,-6,-20,-4,-24,-20,-47,-11,-8,-7,-25,-20,-15,-10,-25,-25,-37,-4,-4,-4,-5,-8,-61,-52,-48,-48,-48,-48,-49,-48,-62,-64,-37,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Bg5 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack} (7. cxd5 Nxd5 8. Qb3 Bxf3 9. gxf3 e6 10. Qxb7 Nxd4 11. Bb5+ Nxb5 12. Qc6+ Ke7 13. Qc5+ Ke8 14. Qxb5+ Qd7 15. Nxd5 exd5 16. Qb3 Bd6 17. O-O Rb8 18. Qe3+ Kf8 19. Rd1 Qh3 {0-1 (19) Riazantsev,A (2671)-Jakovenko,D (2709) Sharjah 2017}) 7... Qa5 8. Bxf6 exf6 9. Be2 dxc4 {next ...0-0-0 is good for Black.} 10. Nd2 Be6 11. Nxc4 Bxc4 12. Bxc4 O-O-O 13. O-O $146 ({Predecessor:} 13. d5 Ne5 14. O-O Nxc4 15. Qg4+ Kb8 16. Qxc4 Bd6 17. Ne4 {½-½ (17) Enescu,C (2367)-Halliwell,T (2330) ICCF email 2013}) 13... Nxd4 14. Bxf7 Kb8 15. Qd3 Nc6 16. Qg3+ Qe5 17. Rad1 Qxg3 18. hxg3 Bc5 19. Bc4 Ne5 20. Bd5 Rd7 21. Be4 Rxd1 22. Rxd1 Re8 23. Na4 (23. Rd5 $11 Bb6 24. Kf1) 23... Bxf2+ $1 $15 24. Kxf2 Ng4+ 25. Kf3 Rxe4 26. Rd8+ Kc7 27. Kxe4 Kxd8 28. Nc5 g6 29. Nxb7+ Kc7 30. Nc5 Kd6 {Precision: White = 44%, Black = 72%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.23"]
[Round "9"]
[White "Shimanov, Alex"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2642"]
[BlackElo "2585"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,152,3,8,12,14,8,17,7,9,-15,-14,-44,0,0,0,-33,-25,-67,-68,-67,-74,-69,-52,-81,-66,-70,-31,-64,-81,-78,-32,-33,-26,-42,-38,-40,-31,-31,-11,-58,-40,-57,-46,-82,-64,-114,-120,-126,0,-88,-71,-81,-81,-74,-30,-115,-122,-108,-110,-106,-109,-140,-140,-142,-145,-141,-107,-105,-126,-142,-145,-150,-135,-181,-194,-156,-12,-15,-31,-21,-8,-62,-61,-64,-64,-64,-64,-65,-65,-65,-65,-65,-65,-65,-65,-65,-65,-65,-65,-65,-8,-65,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,0]} 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. a3 Be7 8. b4 Be6 9. O-O O-O 10. Rb1 f6 11. b5 {A29: English Opening: Four Knights Variation with 4 g3} (11. d3 a5 12. b5 Nd4 13. Nd2 Qc8 14. e3 Nf5 15. Qc2 a4 16. Rd1 Nd6 17. Nde4 Nxe4 18. Nxe4 Bd5 19. Nc5 Bxg2 20. Kxg2 Bxc5 21. Qxc5 {½-½ (85) Svidler,P (2757)-Giri,A (2793) Moscow 2016}) 11... Nd4 {LiveBook: 5 Games} 12. e3 Nxf3+ 13. Bxf3 $146 ({Predecessor:} 13. Qxf3 Rb8 14. d4 Qd7 15. Qd1 Rfd8 16. dxe5 Qxd1 17. Rxd1 Rxd1+ 18. Nxd1 {0-1 (46) Hocevar,N (2169)-Arkhangelsky,B (2416) Saint Vincent 2001}) 13... Qc8 14. Qc2 Rd8 {[%cal Bf8d8,Bd8d4,Bd4c4][%mdl 32]} 15. d4 Bf5 16. Qb3+ Be6 17. Qc2 Bf5 $36 {[%mdl 2048] Black is pushing.} 18. Ne4 exd4 {Strongly threatening ...d3.} 19. exd4 Rxd4 20. Bb2 Rc4 21. Qe2 Qe6 {[%cal Rf5e4]} 22. Rfe1 $1 Re8 23. Rbd1 Kf8 24. Nc3 Qxe2 25. Rxe2 Bd6 26. Rxe8+ Kxe8 27. Re1+ Kf8 28. Bxb7 Be5 29. Rc1 $1 Bd7 30. Ba6 Kf7 31. Kf1 g5 32. Ke2 Kg6 33. Kd2 Rd4+ 34. Ke1 Rc4 35. Kd2 $1 Rc5 36. Ke2 h5 37. f3 Bxc3 (37... Rc4 {seems wilder.} 38. Bb7 f5 39. Kf2 h4 40. Kg2 hxg3 41. hxg3 Rc5) 38. Rxc3 (38. Bxc3 $11 {keeps the balance.} Nd5 39. Bd2 Bxb5+ 40. Bxb5 Rxb5 41. a4) 38... Bxb5+ $17 39. Bxb5 Rxb5 {[%mdl 4096] Endgame KRB-KRN} 40. Bc1 c5 {[%cal Bc7c5,Bc5c4,Bc4c3,Bc3c2][%mdl 32]} 41. h3 c4 42. Rc2 Rb3 43. Be3 c3 44. Bc5 Nc4 45. a4 Na3 46. Rc1 a5 47. Kd3 c2+ 48. Ke2 g4 (48... Kf5 $17 {White should prevent ...Ke5.} 49. Bxa3 Rxa3 50. Rxc2 Rxa4) 49. hxg4 $11 hxg4 50. fxg4 Rxg3 (50... Kg5 {feels hotter.} 51. Kd2 Kxg4 52. Rf1 f5 53. Bd6 Kg5) 51. Bxa3 (51. Kd2 $11) 51... Rxa3 $15 52. Rxc2 Rxa4 $11 {KR-KR} 53. Rc5 Ra1 {And now ...a4 would win.} 54. Kf2 Ra3 55. Kg2 a4 56. Ra5 Ra1 57. Kh2 a3 {Threatens to win with ...Kh7.} 58. Kg2 Kf7 {[#] Hoping for ...a2.} 59. Ra6 Ke7 {White must now prevent ...a2.} 60. Kh2 a2 (60... Ra2+ $1 $15 61. Kg3 Ra1) 61. Kg2 (61. Ra7+ $1 $11 Kd6 62. Ra5) 61... Kd7 (61... Kf7 $15 62. Ra5 Ke6) 62. Kh2 {The position is equal.} Kc7 {...Kb7 is the strong threat.} 63. g5 Kb7 64. Ra3 fxg5 65. Kg2 Kb6 66. Ra8 Kb5 67. Rb8+ Kc4 68. Rc8+ Kd4 69. Rd8+ Ke3 70. Re8+ Kf4 71. Rf8+ Kg4 72. Ra8 Kh5 73. Rh8+ Kg6 {( -> ...Rg1+!)} 74. Rg8+ Kf7 75. Ra8 g4 76. Ra6 {[#]} g3 $1 {Precision: White = 62%, Black = 54%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.23"]
[Round "9"]
[White "Stukopin, Andrey"]
[Black "Ramirez, Alejandro"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "2586"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,117,0,4,0,66,66,62,72,101,66,58,42,45,52,113,122,103,95,132,55,43,32,35,0,0,-10,-10,-10,-6,0,0,-2,0,0,8,8,8,8,8,4,7,8,8,8,8,0,35,39,48,8,8,8,8,8,8,8,8,8,8,8,16,16,15,10,20,8,10,8,16,8,8,8,8,8,8,8,8,8,8,8,8,8,8,3,8,8,8,8]} 1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 a6 7. Be2 Nf6 8. O-O Be7 9. f4 d6 10. Kh1 O-O 11. Qe1 Nxd4 12. Bxd4 b5 13. a3 Bb7 14. Qg3 Rad8 15. Rae1 Bc6 16. Bd3 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3} Qd7 {[#] LiveBook: 8 Games} 17. Rf3 $146 ({Predecessor:} 17. Ne2 g6 18. Qe3 Ng4 19. Qg3 Nf6 20. Qf3 Ne8 21. Qe3 Bf6 22. Bxf6 Nxf6 23. Nd4 Bb7 {½-½ (58) Dragun,K (2594)-Grachev,B (2639) Moscow 2016}) 17... g6 (17... Nh5 $11 18. Qg4 Nf6) 18. f5 $1 $14 {White is slightly better.} exf5 19. Rxf5 (19. exf5 Nh5 $15) 19... Ne8 20. a4 {[%cal Ra4b5]} Ng7 21. axb5 axb5 22. b4 Rde8 (22... Nxf5 $2 {too greedy.} 23. exf5 d5 24. fxg6 $16 (24. Qe5 f6 $11)) (22... Ne6 $14 23. Bg1 (23. Nxb5 $2 Rb8 $19) 23... Rb8) 23. Bxg7 $16 Kxg7 24. Bxb5 Bxb5 25. Rxb5 (25. Nxb5 $16 Qc6 26. c3) 25... Bf6 26. Qd3 Be5 $1 27. Rd5 Qg4 28. Nb5 (28. Rb1 {with more complications.} f5 29. exf5 Rxf5 30. h3 Qf4 31. g3) 28... Bxh2 $1 29. Qh3 $1 {[%cal Rh3g4]} ({Avoid the trap} 29. Nxd6 $2 Qh4 $19) 29... Qxh3 30. gxh3 Bg3 31. Re2 Rb8 32. c3 Rfc8 33. Re3 Be5 34. Nxd6 Rxc3 35. Rxc3 Bxc3 $11 {[%mdl 4096] Endgame KRB-KRN} 36. b5 Kf8 37. Kg2 Ke7 {[#]} 38. b6 $1 {[%mdl 512]} f5 (38... Ba5 $5 {[%cal Ra5b6]}) (38... Rxb6 39. Nc8+) 39. exf5 gxf5 40. Nxf5+ Ke6 {The position is equal.} 41. Rb5 Kd7 42. Ne3 {Threatening Rc5.} Kc6 43. Rh5 Bd4 44. Rh6+ (44. Nc2 $5 {[%cal Rc2d4]} Bc5 45. Rxh7 $14) 44... Kc5 45. Nf5 Ba1 46. Rxh7 Rxb6 47. Kf3 Bf6 48. Rd7 Rb4 49. Ng3 {[#] Hoping for Ne4+.} Kc6 50. Rf7 Be5 51. Ne4 Kd5 52. Ng5 Kd6 53. Rf5 Bb2 54. Ra5 Ke7 55. Ne4 Kf7 56. Kf4 Kg6 57. Ra6+ Kg7 58. h4 Bc1+ 59. Kf5 {Precision: White = 73%, Black = 77%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.23"]
[Round "9"]
[White "Li, Ruifeng"]
[Black "Nyzhnyk, Illya"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2574"]
[BlackElo "2610"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,-8,14,5,32,28,57,47,47,52,57,66,136,136,165,149,139,128,140,63,68,59,55,55,67,88,160,165,183,134,314,308,320,7,18,0,0,0,0,0,0,0,0,0,0,0,0,0,-24,-18,0,0,0,-32]} 1. e4 e6 2. d4 d5 3. Nc3 {[%cal Bb1c3,Bc3e2,Be2d4][%mdl 32]} Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. Nf3 Qa5 {LiveBook: 19 Games. C11: French: Classical System: 4 e5 and 4 Bg5 dxe4} 8. Bf4 (8. a3 cxd4 9. b4 Qc7 10. cxd4 b5 11. Nf4 Qb6 12. Rb1 a5 13. bxa5 Rxa5 14. Bd3 Ba6 15. O-O Bxa3 {0-1 (40) Robson,R (2668)-Caruana,F (2817) Saint Louis 2017}) 8... cxd4 $146 ({Predecessor:} 8... Be7 9. dxc5 Bxc5 10. b4 Bxb4 11. cxb4 Nxb4 12. Nc3 Nc5 13. Bb5+ Nc6 14. Bd2 O-O 15. Rc1 Nb4 16. O-O Nxa2 17. Na4 Qxb5 18. Rxc5 Qd3 19. Qc2 {1-0 (19) Milov,L (2480)-Wirschell,T (2380) Berlin 1993}) 9. Nexd4 Be7 {White has an edge.} 10. Bd3 Qb6 11. Rb1 Nc5 12. Bc2 f5 (12... Nxd4 $14 13. Nxd4 (13. cxd4 Ne4 $11) 13... Qa6) 13. exf6 $1 $16 gxf6 14. O-O e5 15. Nxc6 Qxc6 16. Bxe5 (16. Nxe5 $16 fxe5 17. Qh5+ (17. Bxe5 O-O $17) 17... Kd8 18. Bxe5) 16... fxe5 $14 17. Nxe5 Qf6 18. Qh5+ {[%mdl 1024] White has compensation.} Kf8 19. Rbe1 Ne6 {[#]} ({Black should try} 19... Rg8) 20. f4 $1 $16 {[%cal Bf2f4,Bf4f5][%mdl 32]} (20. Ng4 Qg5 $11) 20... Nc5 (20... Nxf4 21. Rxf4 Qxf4 22. Ng6+ Kg7 23. Rxe7+ Kf6 24. Nxf4 Kxe7 25. Qe5+ Kf7 26. Qxd5+ Ke7 27. Qe5+ Kf7 28. Bb3+ Be6 29. Qxe6+ Kg7 30. Qf7+ Kh6 31. Qf6#) 21. f5 Ne4 $2 (21... Bd7 $16 {was necessary.}) 22. Bxe4 $18 Qxe5 23. Bxd5 $2 ({Better is} 23. Bd3 $18 Qf6 24. Bb5) 23... Qxd5 $11 24. Qh6+ Kf7 $1 25. f6 (25. Rxe7+ $5 Kxe7 26. Qg7+ Kd6 27. Qxh8 $11) 25... Qc5+ $1 ({But not} 25... Bc5+ $2 26. Kh1 $18) 26. Kh1 Bf8 {[#]} 27. Re7+ $1 {[%mdl 512]} Bxe7 28. Qg7+ Ke6 29. b4 Qd6 {White must now prevent ...Kd7.} ({Worse is} 29... Qxc3 30. Qxe7+ Kd5 31. Rd1+ Qd4 32. Qc5+ Ke6 33. Rxd4 Kf7 34. Qe7+ Kg6 35. Qg7+ Kf5 36. g4+ Ke5 37. f7+ Ke6 38. g5 Ke7 39. Qf6+ Kf8 40. Rd8#) 30. Qg4+ Kf7 31. Qg7+ Ke6 {aiming for ...Kd7.} 32. Qg4+ Kf7 33. Qg7+ {Precision: White = 54%, Black = 40%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.24"]
[Round "10"]
[White "Nyzhnyk, Illya"]
[Black "Stukopin, Andrey"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2610"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,60,0,0,0,9,7,4,0,0,0,-10,-11,-7,-5,-10,-8,-6,-10,-24,-15,-4,-6,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 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 Be7 (8... Bd6 9. Bg5 Be7 10. Bxe7 Qxe7 11. Re1 O-O 12. Ne5 Nd7 13. Nxf7 Nb6 {1-0 (49) Nakamura,H (2779)-Caruana,F (2823) Saint Louis 2016}) 9. Re1 O-O 10. Ne5 {LiveBook: 4 Games} Nc6 11. Qg4 f5 12. Nxc6 (12. Qf3 {looks sharper.} Na5 13. Bb3 Nxb3 14. axb3 a5 15. Bf4) 12... fxg4 13. Nxd8 Rxd8 14. Bxe6+ Bxe6 15. Rxe6 {[#]} Re8 $146 16. Bf4 Bd6 17. Rxe8+ Rxe8 18. Bxd6 cxd6 $11 {[%mdl 4096] Endgame KR-KR} 19. Rb1 {The position is equal.} b6 20. Kf1 Kf7 21. a4 Ke6 22. a5 bxa5 23. Ra1 Rc8 24. Rxa5 Rxc3 25. Rxa7 Kf6 26. Rd7 Rc6 27. Ke2 h5 28. g3 g6 29. Kd3 Ke6 30. Rg7 Kf6 {Precision: White = 80%, Black = 79%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.24"]
[Round "10"]
[White "Sevian, Samuel"]
[Black "Li, Ruifeng"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2585"]
[BlackElo "2574"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,116,14,15,4,10,16,14,19,22,22,11,19,17,0,0,0,0,-12,0,-63,0,0,21,14,48,51,77,83,131,136,172,162,172,161,154,163,164,158,177,177,210,208,197,192,208,197,201,203,225,203,210,175,187,198,198,183,191,174,168,172,333,371,329,328,316,314,431,411,576,564,507,472,445,305,334,327,327,312,320,312,312,305,305,291,291,274,273,233,226,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2 Nbd7 10. O-O-O Rc8 11. Kb1 Be7 12. g3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5} (12. Bd3 Qc7 13. h3 h4 14. f4 b5 15. Rhe1 Bc4 16. fxe5 dxe5 17. Nd5 Nxd5 18. exd5 Bxd3 19. Qxd3 Qc4 {1-0 (27) Shirov,A (2683)-Delgado Ramirez,N (2615) Florianopolis 2017}) 12... b5 13. Nd5 Nxd5 14. exd5 Bf5 15. Bd3 Bxd3 16. Qxd3 O-O 17. h3 Bg5 18. f4 $36 {[%mdl 2048] White fights for an advantage.} Bh6 19. Qe2 $146 ({Predecessor:} 19. f5 e4 {0-1 (52) Berg,E (2364)-Akesson,R (2535) Lidkoeping 1999}) 19... Qc7 (19... Re8 $5 {[%cal Re5f4]} 20. Qxh5 a5 $11) 20. Rd2 (20. Rhe1 $11) 20... Qc4 ({Black should play} 20... Rfe8 $15 21. Qxh5 a5) 21. Qxh5 $11 Nf6 22. Qd1 Ne4 23. Rg2 a5 24. Re1 a4 25. fxe5 $1 axb3 26. cxb3 Nc3+ ({Not} 26... Qb4 $2 27. Bxh6 f5 28. a3 $18) 27. bxc3 Qe4+ 28. Qc2 Qxe5 29. Bd2 Qf6 {intending ...Bxd2.} 30. Bxh6 Rxc3 31. Rf2 Rxc2 {[%csl Gc2][%cal Rf6b2]} 32. Rxf6 Rg2 33. Rxd6 gxh6 $18 {[%mdl 4096] Endgame KRR-KRR} 34. Rc6 ({Don't take} 34. Rxh6 $6 Ra8) 34... Rxg3 35. Rd1 Rxh3 36. d6 {d7 is the strong threat.} Rd8 37. Rc5 b4 38. Rc4 $1 f5 39. Rxb4 Kf7 40. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rc3 $2 (40... Ke6 41. Rb6 f4) 41. Kb2 Rc6 42. Rb7+ Kf6 43. d7 $1 Ke7 44. a5 f4 (44... Ra6 {was worth a try.} 45. Rb5 Rd6) 45. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} f3 46. b5 Rd6 47. Rf1 R8xd7 48. Rxd7+ Kxd7 49. Rxf3 {KR-KR} Rd5 50. Rb3 $1 Kc7 51. Ka3 Rg5 {[#] If only Black now had time for ...Kb7....} 52. b6+ $1 Kb8 53. Ka4 {And now Rd3 would win.} Kb7 {[#]} 54. Rb4 $1 {Strongly threatening a6+!} Rg1 55. Kb3 $2 (55. Rc4 $18 {Intending Rc7+ and mate.} Ka6 56. Rc5) 55... Ka6 $11 {The position is equal.} 56. Kc2 {Black must now prevent b7.} Rg8 57. b7 Rb8 58. Rb6+ Kxa5 {Precision: White = 79%, Black = 53%.} 1/2-1/2

[Event "Spring Chess Classic 2017-C"]
[Site "Saint Louis"]
[Date "2017.05.24"]
[Round "10"]
[White "Ramirez, Alejandro"]
[Black "Shimanov, Alex"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2550"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,61,12,4,14,13,0,0,0,0,0,0,9,0,0,-7,-3,-24,-14,-25,-8,-8,0,-4,0,-9,-2,-12,0,0,0,0,8,0,2,0,0,0]} 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. d4 Bf6 10. Re1 Re8 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} 11. Rxe8+ (11. c3 Rxe1 12. Qxe1 Ne8 13. Bf4 d5 14. Bd3 g6 15. Nd2 c6 16. Nf3 Ng7 17. Qe2 Bf5 18. Bxf5 Nxf5 {½-½ (64) Topalov,V (2741)-So,W (2822) Shamkir 2017}) 11... Nxe8 12. c3 d5 13. Bd3 g6 14. Bf4 {LiveBook: 4 Games} Ng7 15. Nd2 c6 16. Qe2 {[#]} Qe7 $146 ({Predecessor:} 16... Nh5 17. Bh6 Bg7 18. Bxg7 Nxg7 {½-½ (29) Idani,P (2563)-Vidit,S (2673) Moscow 2017}) 17. Qxe7 Bxe7 18. Re1 Be6 19. h3 Re8 20. Nf3 f6 21. Re2 Kf7 22. Kf1 (22. Bc7 {with more complications.} Rc8 23. Bh2 Rh8 24. a4 g5 25. a5) 22... Bf5 (22... g5 {is more complex.} 23. Bh2 h5 24. Ne1 h4 25. Kg1 Rg8) 23. Bxf5 {The position is equal.} Nxf5 24. Ne1 g5 25. Bh2 h5 26. g4 hxg4 27. hxg4 Nh4 28. Re3 Bf8 29. Rxe8 Kxe8 30. Bg3 Ng6 31. Nd3 {Precision: White = 68%, Black = 57%.} 1/2-1/2

