[Event "St Louis Inv GM 2019"]
[Site "Saint Louis USA"]
[Date "2019.11.21"]
[Round "1.3"]
[White "Thavandiran, S."]
[Black "Abrahamyan, T."]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2409"]
[BlackElo "2397"]
[Annotator "Yip"]
[PlyCount "75"]
[EventDate "2019.11.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
1. d4 e6 2. c4 Nf6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 cxd4 8. exd4
Be7 9. O-O Nc6 10. Re1 O-O 11. Bb3 ({Relevant:} 11. Bg5 Nb4 12. Qe2 Bd7 13. d5
Nbxd5 14. Nxd5 exd5 15. Qxe7 dxc4 16. Bxf6 gxf6 17. Qe4 Qc7 18. Qh4 Qc6 19. Nd2
Rfe8 20. Ne4 Re6 21. Re3 Rae8 22. Rae1 f5 23. Ng5 Rh6 24. Rxe8+ Bxe8 25. Qf4
Bd7 26. h4 Rd6 27. Nf3 h6 28. Ne5 Qd5 29. Nxd7 Rxd7 30. Qxh6 Rd8 31. Re3 f4 32.
Qxf4 Rd6 33. Re5 Qd4 34. Re4 Qd1+ 35. Kh2 Rg6 36. Rxc4 Qd5 37. f3 Qe6 38. h5
Rg7 39. Re4 Qd7 40. Rd4 Qc8 {Bu,X (2722)-Wang,H (2795) Hengshui 2019 1-0})
11... Nb4 12. Ne5 b6 ({Predecessor:} 12... Bd7 13. Re3 Be8 14. Rg3 Kh8 15.
Be3 Rc8 16. Rh3 Kg8 17. Qf3 Bc6 18. Qg3 Bd5 19. Nxd5 Nbxd5 20. Bh6 Ne8 21. Re1
Qa5 22. Kf1 Rc7 23. Nc4 Rxc4 24. Bxc4 Bd6 25. Qh4 Ndf6 26. Bxg7 Kxg7 27. Qh6+
Kh8 28. Bd3 Be7 29. Bxh7 Ng4 30. Qf4 Qg5 31. Bf5+ Nh6 32. Rxh6+ Kg7 33. Rh7+
Kg8 34. Qxg5+ Bxg5 35. Rh3 {1-0 (35) Jankovic,A (2559)-Mazi,L (2383) Sarajevo
2010}) 13. Qf3 Ra7 14. Be3 Bb7 15. Qh3 Nbd5 (15... Bd5 {Challenging the
Bb3 holds the position level} 16. Nxd5 (16. Bd1 Rc7 17. Rc1 Bd6) 16...
Nfxd5 17. Bd2 Bg5 (17... a5 18. Qg4 Bf6) 18. Bc3 Rc7) 16. Bd2 (16. Bg5
$16 {Is also promising}) 16... Ra8 (16... g6 17. Bh6 Re8 18. Nxf7 Kxf7 19.
Qxe6#) (16... Nb4 17. Rad1 Nfd5 18. Qg4 Kh8 19. Nxd5 Nxd5 20. Bc2 f5 21. Qh3
Kg8 22. Bb3) 17. Rad1 Rc8 (17... g6 18. Bh6 Re8 19. Nxf7 Kxf7 20.
Qxe6#) (17... Ne8 18. Bc2 f5 19. Bb3) 18. Bc2 {Targeting h7} b5 (18... g6
19. Bh6 Re8 20. Nxf7 Qc7 (20... Kxf7 21. Qxe6#) 21. Ne5) 19. axb5 axb5 {
Threatening ..b4} 20. Bb1 b4 (20... g6 21. Bh6 Nxc3 (21... Re8 22. Nxf7 Kxf7
23. Qxe6#) 22. bxc3 Nd5 23. Rd3 Bf6 24. Rg3) 21. Nxd5 (21. Na4 g6 22.
Bh6 Re8 (22... Nh5 23. Bxf8 Bxf8) 23. Nxf7 Kxf7 24. Qxe6#) 21... Bxd5
{} (21... Qxd5 {The pressure on g2 gives Black good defensive chances} 22.
Ng4 (22. Bf4 Rfd8) (22. Bg5 h6 23. Bf4 Rfd8 24. Rd3) 22... h5 23. Ne5
b3 24. Bc3 Rc7 25. Re3) 22. Ng4 {Misses a big finish} (22. Bh6 {Gives a
massive attack} Bb7 (22... Ra8 23. Re3 g6 (23... Re8 {Is worse} 24. Bxg7
Kxg7 25. Rg3+ Kh8 26. Nxf7#) 24. Bxf8 Bxf8) (22... gxh6 {Taking the bishop
invites the attackers to make more inroads} 23. Qxh6 Kh8 24. Re3 (24. Ng4
Ne4 25. Bxe4 Bxe4 26. Rxe4 f5) 24... Qe8 25. Ng4 Nxg4 26. Qxh7#) (
22... Rc7 23. Re3 {White has a crushing attack after Rg3}) (22... Re8 23. Qg3
Bf8 (23... g6 {Loses to a standard sacrificial attack} 24. Bxg6 fxg6 25. Nxg6
$1 hxg6 (25... Nh5 26. Nxe7+) 26. Qxg6+) 24. Bg5 Be7 25. Qf4 Rf8 26.
Qh4 g6 27. Ng4 Kg7 28. Bh6+ Kg8 29. Bxf8 Kxf8 30. Ne5 Kg7) 23. Bg5 g6 24.
Bh6 {Wins the exchange as moving the rook is worse} Re8 (24... Rc7 25. Bxf8
Bxf8) 25. Nxf7 Kxf7 26. Qxe6#) 22... g6 23. Nxf6+ Bxf6 24. Bxb4 Re8 25.
Bc3 Qb6 26. Be4 Red8 27. Qf3 Bg7 28. h4 h5 29. Ra1 Bxe4 (29... Bxd4 30. Bxd5
Rxd5 31. Red1 Qd8 32. Bxd4 Rxd4 33. Rxd4 Qxd4 34. Ra8 Rxa8 35. Qxa8+ Kg7 36.
Qb7) 30. Rxe4 Bxd4 (30... Rd5) (30... Qb7) 31. Rxd4 Rxd4 {}
32. Qf6 Rcd8 33. Ra4 Rd1+ 34. Kh2 {Black is helpless on the dark squares}
Kf8 35. Rf4 R8d7 36. Qxg6 R1d4 37. Bxd4 Qxd4 38. Rxd4 1-0
[Event "St Louis Inv GM 2019"]
[Site "Saint Louis USA"]
[Date "2019.11.22"]
[Round "3.2"]
[White "Thavandiran, S."]
[Black "Mishra, Abhimanyu"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2409"]
[BlackElo "2396"]
[PlyCount "103"]
[EventDate "2019.11.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
{[%evp 0,49,17,13,47,66,54,29,35,35,35,31,17,12,21,-15,-21,-14,-16,-5,2,-9,-15,
-23,-24,-46,-52,-50,-40,-39,-28,-42,-13,-35,-6,-2,19,-29,-28,-54,-39,-33,5,-2,
8,-14,9,10,14,32,30,29]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6.
c4 Nf6 7. N5c3 Be7 8. Be2 O-O 9. O-O a6 10. Bf4 b6 11. Re1 Bb7 12. Bf1 Qc7 ({
Relevant:} 12... Rc8 13. Nd2 Nd7 14. Rc1 Nce5 15. Bg3 Bh4 16. Bxh4 Qxh4 17. g3
Qe7 18. f4 Ng6 19. Nf3 Nf6 20. Qd2 Rfd8 21. Qe3 Qc7 22. h3 h5 23. b4 Ba8 24. a3
Qb8 25. Qf2 b5 26. cxb5 axb5 27. Nd2 h4 28. g4 d5 29. e5 Ne4 30. Ndxe4 dxe4 31.
Qe3 Bc6 32. Rcd1 Rxd1 33. Rxd1 Ne7 34. Qd4 Qa8 35. a4 bxa4 36. b5 Bd5 37. Nxa4
Rc2 38. Nc3 Qa3 39. Nxe4 Qf3 40. Rd3 Qxe4 41. Qxe4 Bxe4 42. Rd8+ {Jumabayev,R
(2594)-Adhiban,B (2671) Hamedan 2018 0-1 (65)}) 13. Nd2 Ne5 14. Rc1 Rac8 15.
Bg3 Rfd8 16. b4 Qb8 17. a3 Nfd7 ({Predecessor:} 17... Ng6 18. f4 Nd7 19.
Nf3 Bf6 20. f5 Nge5 21. fxe6 fxe6 22. Qb3 Re8 23. Nb1 Bc6 24. Nbd2 Kh8 25. Kh1
Nf7 26. c5 bxc5 27. Bxa6 Rcd8 28. Bc4 Nf8 29. b5 Bb7 30. a4 Qa8 31. Bd3 Nd7 32.
Bc2 Nfe5 33. Nxe5 Bxe5 34. Nc4 Bxg3 35. Qxg3 d5 36. Nd6 Rf8 37. e5 d4 38. Qh4
h6 39. Qg3 c4 40. Nxc4 Nc5 41. Nd6 d3 42. Bxd3 Nxd3 43. Qxd3 Bxg2+ 44. Kg1 Bd5
45. Qd4 Rxd6 46. exd6 Qd8 47. Rc3 {Spraggett,K (2586)-Ivanov,J (2409) Seville
2010 1-0 (73)}) 18. Qb3 Bf6 19. Kh1 Nc6 20. Qd1 Nce5 21. f4 Ng6 22. Nf3 Bxc3
23. Rxc3 Nf6 24. f5 exf5 25. exf5 Bxf3 26. Rxf3 Ne5 27. Rf4 Qc7 28. Bh4 Qe7 29.
Rd4 h6 30. h3 Kh7 31. Re3 Rd7 32. Qa4 Ra7 33. Qd1 Rd7 34. Qa4 Ra7 35. Be2 Qd7
36. Qd1 Qxf5 37. Rxd6 Qf4 38. Qd4 Qxd4 39. Rxd4 Rd7 40. Bxf6 gxf6 41. Rxd7 Nxd7
42. Bg4 Rxc4 43. Bxd7 Rd4 44. Rd3 Rf4 45. Rf3 Rd4 46. Bc8 a5 47. bxa5 bxa5 48.
Rxf6 Rc4 49. Ba6 Rc3 50. Rxf7+ Kg6 51. Rf3 Rc5 52. Rb3 1-0
[Event "St Louis Inv GM 2019"]
[Site "Saint Louis USA"]
[Date "2019.11.23"]
[Round "4.5"]
[White "Yoo, Christopher Woojin"]
[Black "Thavandiran, S."]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2449"]
[BlackElo "2409"]
[Annotator "Tactical Analysis 2.20 (15s)"]
[PlyCount "57"]
[EventDate "2019.11.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
{[%evp 18,57,98,50,114,28,91,63,111,75,92,-12,1,-9,14,-9,37,9,114,92,115,105,
121,100,142,108,143,89,146,51,51,49,93,22,106,109,181,178,221,219,270,250]} 1.
e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Nd7 7. Bc4 Nf6 8.
Qe2 e6 9. d4 Be7 10. O-O O-O 11. Rd1 (11. Bf4 b6 12. Rfe1 Nd5 13. Be5 Bb7
14. Rad1 Bd6 15. Bd3 Bxe5 16. dxe5 Qe7 17. Qe4 g6 18. a3 c5 19. Qg4 {1/2-1/2
(37) Guseinov,G (2659)-Arun Prasad,S (2552) Dubai 2009}) 11... b5 (11... b6
{keeps the balance.}) 12. Bd3 Bb7 {White is slightly better.} 13. Ne5
Qd5 14. Ng4 (14. c4 bxc4 15. Bxc4) 14... Nxg4 15. Qxg4 c5 (15... f5
{[%CAl Rf5g4]} 16. Qg3 c5) 16. dxc5 {Hoping for Bxh7+!} Qxc5 (16... f5
{is more appropriate.} 17. Qg3 Qxc5) 17. Bh6 {[%csl Gh6][%CAl Rg4g7]} Bf6 {
} (17... Qe5) 18. Qh3 g6 19. Bxf8 Rxf8 20. c3 b4 21. cxb4 Qxb4
22. a3 ({Better is} 22. Rab1) 22... Qb3 (22... Qa4) 23. Bf1 (23. Qe3)
23... Qxh3 24. gxh3 Bd5 25. Rab1 (25. Bg2) 25... Ba2 (25... Bb3)
26. Rbc1 Bxb2 (26... Bb3) 27. Rc7 Be5 (27... Bb3 28. Rb1 Be5)
28. Rxa7 Rb8 29. a4 {Accuracy: White = 49% (9/4/18), Black = 50% (7/5/18).} 1-0
[Event "St Louis Inv GM 2019"]
[Site "Saint Louis USA"]
[Date "2019.11.24"]
[Round "6.5"]
[White "Thavandiran, S."]
[Black "Stremavicius, T."]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2409"]
[BlackElo "2506"]
[PlyCount "56"]
[EventDate "2019.11.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
{[%evp 0,37,17,13,76,76,64,64,70,77,88,47,60,55,70,50,50,42,44,47,48,23,22,29,
38,43,23,47,58,53,58,60,67,62,63,76,75,49,34,25]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6
4. Be3 c6 5. Qd2 Nbd7 6. Nf3 Bg7 7. Bd3 O-O 8. h3 e5 9. O-O Re8 10. Rfe1 ({
Relevant:} 10. Rad1 b5 11. dxe5 dxe5 12. a4 a6 13. Ne2 Qe7 14. Ng3 Bb7 15. a5
c5 16. c4 b4 17. Bh6 Nb8 18. Bxg7 Kxg7 19. Bc2 Ng8 20. Qe3 Bc6 21. Rd2 Ra7 22.
Rfd1 Rd7 23. Rd5 Bxd5 24. exd5 Nf6 25. Ba4 Rc8 26. Nxe5 Rdd8 27. Qg5 Kf8 28.
Re1 Qd6 29. Re3 Re8 30. Bxe8 Rxe8 31. Qh6+ Kg8 32. Nf5 Qf8 33. Qg5 Nbd7 34.
Nh6+ Kg7 35. Nhxf7 Nxe5 36. Nxe5 Qd6 37. Ng4 Rxe3 38. Qxe3 Nd7 39. Qh6+ Kg8 {
Saric,I (2669)-Ponomariov,R (2694) Katowice 2017 1-0}) 10... b5 11. dxe5 dxe5
12. Ne2 Qe7 13. a4 b4 14. c3 a5 15. cxb4 axb4 {} 16. Qc2 ({Predecessor:
} 16. Rec1 c5 17. Ng3 Bb7 18. Qe2 Bc6 19. Bb5 Bxb5 20. Qxb5 Reb8 21. Qd3 b3 22.
Nd2 Rb4 23. Rc4 h5 24. Rxb4 cxb4 25. Nxb3 Qe6 26. a5 Qc6 27. Rc1 Qa4 28. Nf1
Nf8 29. Nfd2 Ne6 30. Qc4 Nf4 31. Ra1 Qd7 32. Nc5 Qc6 33. Ndb3 Bf8 34. Qxb4 Qc8
35. Qb7 Nxh3+ 36. Kf1 Qxb7 37. Nxb7 Nf4 38. f3 Nd3 39. a6 Nxb2 40. a7 Nc4 41.
Bf2 Nd7 42. Ra6 f5 43. Rxg6+ Kf7 44. Rc6 Na3 45. exf5 Nb5 {Leko,P (2732)
-Bologan,V (2681) Beijing 2012 1-0 (63)}) 16... c5 17. Nd2 Bb7 18. Nc1 Nh5 19.
Ncb3 Nf4 20. Bb5 Red8 21. Bxd7 Rxd7 22. Qxc5 Qd8 23. Bxf4 exf4 24. Qxb4 Bf8 25.
Qc3 Rc8 26. Qf3 Bb4 27. Qxf4 Rxd2 28. e5 Qd5 0-1
[Event "St Louis Inv GM 2019"]
[Site "Saint Louis USA"]
[Date "2019.11.24"]
[Round "7.2"]
[White "Kevlishvili, Robby"]
[Black "Thavandiran, S."]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2475"]
[BlackElo "2409"]
[Annotator "Tactical Analysis 2.20 (15s)"]
[PlyCount "112"]
[EventDate "2019.11.21"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "USA"]
[EventCategory "9"]
[SourceTitle "TWIC 1307"]
[Source "Mark Crowther"]
[SourceDate "2019.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.25"]
[SourceQuality "2"]
{[%evp 0,103,21,21,60,73,72,73,68,33,79,55,66,65,42,41,40,37,36,37,29,30,25,16,
10,10,-5,-8,0,-10,-15,-48,-49,-31,-44,-45,-35,-31,-32,-28,-29,-24,-15,-23,-27,
-44,-28,-40,-41,-65,-36,-44,-51,-45,-14,-9,-61,-51,-15,-155,-140,-124,-154,
-136,-136,-147,-136,-147,-71,-111,-108,-185,-193,-277,-213,-192,-164,-215,-212,
-232,-235,-235,-165,-176,-182,-190,-176,-168,-169,-167,-141,-154,-149,-150,
-158,-170,-152,-218,-207,-257,-232,-240,-258,-263,-270,-292]} 1. e4 c6 2. d4 d5
3. e5 Bf5 4. h4 Qc8 5. c4 (5. Nc3 h6 6. Be3 e6 7. g4 Bh7 8. Bd3 Bxd3 9. Qxd3
c5 10. Nf3 c4 11. Qd2 h5 12. gxh5 Rxh5 13. Ne2 Nc6 14. Ng3 Rh8 15. c3 b5 16. h5
b4 17. Kf1 Rb8 18. Kg2 Qa6 19. Qc2 Nh6 20. Ng5 Be7 21. f4 Qb7 {1/2-1/2 (53)
Iljiushenok,I (2533)-Sjugirov,S (2663) Khanty-Mansiysk RUS 2018}) 5... dxc4 6.
Bxc4 e6 7. Nc3 {Threatens to win with g4.} h6 8. Nge2 {White is better.} Ne7 9.
O-O ({Predecessor:} 9. Ng3 Bh7 10. Nge4 Nd5 11. Qg4 Bxe4 12. Nxe4 {
1-0 (45) Delchev,A (2614)-Burmakin,V (2559) Benasque 2013}) 9... Nd7 10.
Ng3 (10. Bb3) 10... Nb6 (10... Bh7 {is more appropriate.}) 11. Bd3 ({
Much worse is} 11. Nxf5 Nxf5 12. Bd3 Nxh4) (11. Bb3) 11... Bxd3 12.
Qxd3 Qd7 (12... Qc7) 13. Be3 (13. Rd1) 13... O-O-O 14. a4 (14. Qe2
$142) 14... Kb8 15. b4 Ned5 16. b5 ({But not} 16. a5 Nxb4 17. Qe2 N6d5)
16... Nxc3 17. Qxc3 Rc8 {[%mdl 2048] White is under pressure.} 18. Qb2 Be7
19. Ne4 Nd5 ({Reject} 19... Bxh4 20. Nd6) (19... Qd5 {might be stronger.
} 20. Nc3 Qd7) 20. Rfc1 (20. Rfd1) 20... f5 (20... cxb5 21. axb5 Rxc1+
22. Bxc1 Rc8) 21. Nc5 (21. exf6 {was the only good move.} gxf6 22.
Qe2) 21... Bxc5 22. Rxc5 (22. dxc5 Nxe3 23. fxe3) 22... g5 23. h5
Rc7 (23... cxb5 {Hoping for ...Rxc5.} 24. axb5 b6) 24. Bd2 (24. Rac1
) 24... Rhc8 (24... cxb5 25. axb5 b6 26. Rxc7 Nxc7) 25. Bb4 {} (25.
Qa3 {keeps the balance.}) 25... Ka8 (25... Nf4 26. Rd1 Ka8) 26.
Ba3 (26. b6 Nxb6 27. Ba5) 26... b6 27. Rxc6 Rxc6 28. bxc6 Qxc6 (28...
Rxc6 29. Qe2 Rc3) 29. g3 {[%mdl 8192]} (29. Rc1 Qxc1+ 30. Qxc1 Rxc1+
31. Bxc1) 29... Qxa4 30. Bf8 Qe8 {[%mdl 64] Double Attack} 31. Qa3 (31. Qa2
{was worth a try.} a5 32. Bc5) 31... a5 32. Bc5 {Threatening Bxb6!} Qb5 33. Bf8
Kb7 34. Bxh6 Rh8 35. Bg7 (35. Bxg5 Rxh5 36. Bh4) 35... Rxh5 {...Qe2 is the
strong threat.Black is clearly winning.} 36. Rc1 Qe8 37. Bf6 g4 38. Qd6 Rh7 39.
Bd8 Qd7 40. Qf8 Rf7 41. Qg8 Rg7 42. Qf8 Rf7 43. Qg8 a4 44. Bh4 f4 45. Qxg4 fxg3
46. Bxg3 Rg7 47. Qf3 Qe8 48. Qa3 Rc7 49. Ra1 (49. Rxc7+ Nxc7 50. Bf4)
49... Rc4 50. Qf3 Qc6 51. Qf7+ Ka6 52. Kh2 Rxd4 53. Qf8 Rc4 54. Qg8 Nf4 {
[%csl Gf4][%CAl Rc6g2]} 55. Rg1 Qf3 {( -> ...Qh5+)} 56. Qe8 Qh5+ {Accuracy:
White = 30% (16/10/50), Black = 68% (27/16/51).} (56... b5 57. Qf7 {}
Rc7 {[%mdl 512]} 58. Qxf4 Rh7+ 59. Qh4 Rxh4+ 60. Bxh4 a3) 0-1
