[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.11"]
[Round "1.1"]
[White "Galperin, Platon"]
[Black "Sargsyan, Anna M."]
[Result "1/2-1/2"]
[ECO "C81"]
[WhiteElo "2460"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,93,10,17,15,0,0,0,0,0,0,0,0,0,66,72,78,35,110,31,27,37,100,96,104,51,52,49,39,11,11,11,14,14,33,33,33,33,33,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,1,1,8,10,12,34,0,0,0,0,0,0,0]} 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. Qe2 Nc5 10. Rd1 Nxb3 11. axb3 Be7 {[#]} 12. c4 $1 {[%mdl 512]} b4 {C81: Open Ruy Lopez: Keres Variation (9 Qe2)} (12... bxc4 13. bxc4) 13. Bg5 (13. Nbd2 {seems wilder.} O-O 14. Nf1 Qd7 15. Bg5 Rfd8 16. Ne3) 13... Bxg5 14. cxd5 Bxd5 15. Nxg5 Qxg5 {[%csl Gd5][%cal Rg5g2] [#]} 16. Rxd5 O-O {aiming for ...Rfd8.} 17. Nd2 $36 {[%mdl 2048] [#] Black is under pressure.} Rfe8 $146 (17... Rad8 $11 18. Nf3 Qf5 19. Rxd8 Rxd8) ({Predecessor:} 17... Rad8 18. Nf3 Qf5 19. Rxd8 Rxd8 20. h3 {½-½ (79) Perez Candelario,M (2611)-Anton Guijarro,D (2652) Linares 2018}) 18. Nf3 $14 Qf4 19. Rad1 (19. g3 $5 {[%cal Rg3f4]} Qg4 20. Qd3 $16 (20. Rxa6 Rxa6 21. Qxa6 Qxf3 $16)) 19... h6 ({Black should play} 19... f6 $14) 20. g3 (20. Rc5 $16 Re6 21. g3) 20... Qg4 $1 21. Kg2 Re6 (21... f6 $14) 22. Rc5 Rae8 23. Qc2 (23. h3 $16 Qh5 24. Rdd5) 23... Qg6 24. Qxg6 fxg6 25. Nd4 Nxd4 26. Rxd4 Rxe5 27. Rxc7 $11 {[%mdl 4096] Endgame Black must now prevent Rdd7. KRR-KRR} Kh7 28. Rxb4 Re2 29. Rbb7 Rg8 30. g4 g5 31. Kg3 Rxb2 32. f3 Rd2 33. h4 gxh4+ 34. Kxh4 Kh8 35. Rf7 Rd3 36. b4 Ra3 37. Kh5 Kh7 38. Ra7 Ra1 {[%cal Ra1h1]} 39. Kh4 Rh1+ 40. Kg3 Rg1+ 41. Kf2 Rb1 42. Rab7 Rb2+ 43. Ke3 Kg6 44. f4 Rb3+ {The position is equal.} 45. Kf2 h5 46. f5+ Kh6 47. gxh5 {Accuracy: White = 52%, Black = 74%.} 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.11"]
[Round "1.2"]
[White "Shahinyan, David"]
[Black "Barseghyan, Armen Ar."]
[Result "1-0"]
[ECO "A67"]
[WhiteElo "2444"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,51,37,17,16,27,38,36,28,29,33,38,34,29,87,23,82,65,102,90,96,87,153,150,172,90,69,89,365,324,236,208,182,169,631,633,628,622]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 Na6 {A67: Modern Benoni: Taimanov Variation} (9... O-O 10. Nf3 Na6 11. O-O Nb4 12. Kh1 a6 13. Bc4 Nb6 14. Bb3 Bg4 15. a5 Nd7 16. h3 Bxf3 17. Qxf3 Rc8 18. Bc4 Nc2 19. Ra2 Nd4 20. Qf2 {0-1 (38) Moiseenko,A (2628)-Donchenko,A (2615) Riga 2019}) 10. Nf3 Nb4 11. O-O a6 {White is slightly better.} 12. Be2 O-O 13. Be3 Re8 14. Bf2 b6 (14... Nf6 $11 {remains equal.} 15. Nd2 Nd7) 15. Nd2 (15. Bc4 $16) 15... Bd4 $146 (15... f5 $11) ({Predecessor:} 15... f5 16. exf5 gxf5 17. Bh5 Re7 18. Nc4 Nf6 19. Bh4 Rb8 20. a5 bxa5 21. Nxa5 {0-1 (61) Lombart,P (1995)-Stephan,V (2302) Avoine 2015}) 16. Nc4 $16 Qc7 17. Rc1 Bxf2+ 18. Rxf2 f6 (18... Rb8 $142) 19. e5 fxe5 20. fxe5 ({White should try} 20. Qd2 $18) 20... Nxe5 21. Ne4 $36 {[%mdl 2048] [#] Threatens to win with Nf6+. White has strong initiative.} Bd7 $2 {[%mdl 8192]} (21... Ng4 $16 {was necessary.} 22. Rf4 (22. Bxg4 Rxe4 23. Qf3 Re8 $11) 22... Rxe4 23. Rxe4 Nf6) 22. Nf6+ ({Not} 22. Ncxd6 Rf8 $16) 22... Kg7 23. Nxe8+ Rxe8 24. Qd2 {Nxe5 is the strong threat.} Bxa4 $2 (24... Nxc4 25. Rxc4 Qd8) 25. Nxe5 $18 Rxe5 {[#]} 26. Qxb4 $1 {[%mdl 576] Pin. Accuracy: White = 60%, Black = 17%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.11"]
[Round "1.3"]
[White "Davtyan, Artur"]
[Black "Hayrapetyan, Hovik"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2437"]
[BlackElo "2458"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,85,24,24,29,30,32,31,29,24,31,31,29,40,27,25,25,25,25,18,18,25,22,35,8,45,22,47,29,36,10,34,13,79,66,118,120,129,111,112,109,159,147,172,179,191,107,113,77,289,291,293,287,295,285,289,281,270,272,254,218,208,205,217,205,301,289,655,477,808,800,807,807,807,807,887,696,887,659]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 a6 5. cxd5 exd5 6. Bg5 {D37: Queen's Gambit Declined: 5 Bf4} Be6 7. e3 Nbd7 8. Bd3 {White is slightly better.} c6 9. O-O Bd6 10. Bf4 Qb8 11. Bxd6 Qxd6 12. h3 O-O 13. Rc1 {[#]} g6 $146 ({Predecessor:} 13... Rfc8) 14. Qe2 Rae8 15. a3 Nh5 16. Qc2 f5 17. b4 Ndf6 18. Ne5 f4 19. Rfe1 Bc8 20. Qd2 Nd7 (20... fxe3 $11 21. Qxe3 Nd7) 21. e4 $1 $36 {[%mdl 2048] White has some pressure.} Nxe5 (21... Rxe5 $14 22. dxe5 Nxe5) 22. dxe5 Rxe5 23. exd5 {Black must now prevent Ne4.} Rxe1+ 24. Rxe1 Nf6 25. dxc6 Qxc6 26. Re7 {Threatens to win with Be4.} Be6 {[#]} 27. Qe1 ({White should play} 27. Be2 $1 $18) 27... Bf7 28. Qe5 {Strongly threatening Be4.} Rc8 $2 (28... Re8 $16 29. Ne4 Nxe4 30. Bxe4 Rxe7 31. Qxe7 Qc1+ 32. Kh2 b5) 29. Ne4 $18 Nxe4 ({But not} 29... Nd5 $2 {[#]} 30. Rxf7 $1 {[%mdl 512]} Kxf7 31. Nd6+ Kf8 32. Nxc8 $18) 30. Bxe4 Qc3 {Hoping for ...Qe1+.} 31. Bxb7 ({Less strong is} 31. Qxf4 Qc1+ 32. Qxc1 Rxc1+ 33. Kh2 Rc3 $16) 31... Qxe5 32. Rxe5 {[%mdl 4096] Endgame KRB-KRB} Rc1+ 33. Kh2 Rc2 34. Bxa6 Ra2 35. Ra5 Rxf2 36. Bb7 Ra2 (36... Bc4 $142 37. Rc5 Bb3) 37. Bf3 Be6 $2 (37... Rb2 38. Rc5 Be8) 38. a4 {[%cal Ba3a4,Ba4a5][%mdl 32] White is clearly winning.} Kf7 (38... Rb2 $142 39. Ra6 Kf7) 39. Ra7+ Kf6 40. b5 Rb2 41. Rxh7 Rb4 42. Ra7 Bb3 43. a5 {Accuracy: White = 65%, Black = 48%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.11"]
[Round "1.4"]
[White "Matviishen, Viktor"]
[Black "Pogosyan, Stefan"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2497"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,61,31,31,109,100,104,113,110,93,285,289,289,290,291,281,281,283,281,281,279,281,351,350,334,348,379,375,365,346,378,371,450,442,428,428,457,450,480,431,511,502]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. cxd5 exd5 6. Nc3 c6 7. Qc2 O-O 8. e3 Nbd7 9. Bd3 Re8 10. O-O Nf8 11. h3 Ng6 12. Ne5 c5 $146 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} ({Black should play} 12... Nd7 $14 13. Bxe7 (13. Bxg6 hxg6 14. Bxe7 Qxe7 $11) (13. Nxg6 Bxg5 14. Ne5 g6 $11) 13... Qxe7) ({Predecessor:} 12... Nd7 13. Bxe7 Qxe7 14. f4 Ngf8 15. Rae1 f6 16. Nf3 Nb6 17. f5 Bd7 18. Nd2 Qd6 19. Nb3 Rad8 20. Nc5 Bc8 {½-½ (36) Ramirez Alvarez,A (2589)-Ochoa de la Rosa,M (2403) Merida 2019}) 13. Nxg6 hxg6 14. dxc5 Bxc5 {White is better.} 15. Rad1 Be6 $2 {[#]} (15... Re5 $16 16. Bf4 Re7) 16. Bb5 $1 $18 Rc8 17. Bxe8 Qxe8 18. Bxf6 gxf6 19. Nxd5 Bxd5 20. Rxd5 Bxe3 21. Qe2 Qc6 22. Rfd1 Bb6 23. Rd6 Qc2 24. Qxc2 Rxc2 {[%mdl 4096] Endgame KRR-KRB} 25. R6d2 ({Don't do} 25. Rxf6 Kg7 $18) 25... Rc4 26. Rd7 Rc2 27. R1d2 {White is clearly winning.} Rc1+ {[#]} 28. Kh2 $1 Bc7+ 29. g3 f5 30. Kg2 Kf8 31. Re2 {Accuracy: White = 87%, Black = 14%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.11"]
[Round "1.5"]
[White "Levin, Evgeny A."]
[Black "Sturua, Zurab"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2527"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,39,30,27,38,32,31,18,37,33,31,30,61,56,54,33,31,16,63,16,33,25,21,10,16,4]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6 7. Bd3 dxc4 8. Bxc4 Bb7 9. O-O a6 {D37: Queen's Gambit Declined: 5 Bf4} 10. Qe2 Nbd7 11. Rfd1 Nd5 $146 ({Predecessor:} 11... b5 12. Bd3 Bd6 13. Bg5 h6 14. Bh4 c5 15. Ne4 Bxe4 16. Bxe4 Ra7 17. dxc5 Nxc5 {1-0 (26) Nakamura,H (2775)-Anand,V (2793) London 2014}) 12. Rac1 Nxf4 13. exf4 {Black must now prevent d5.} Bxf3 14. Qxf3 Bd6 15. Ne4 Nf6 16. Nxd6 cxd6 17. f5 (17. d5 $5 {[%cal Rd5e6]}) 17... b5 18. Bd3 exf5 19. Qxf5 Rc8 20. Rxc8 {Accuracy: White = 50%, Black = 54%.} 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "2.1"]
[White "Sargsyan, Anna M."]
[Black "Sturua, Zurab"]
[Result "0-1"]
[ECO "E69"]
[WhiteElo "2382"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,94,45,50,54,54,54,54,54,62,63,65,74,57,68,70,65,63,69,62,62,64,82,72,81,71,86,82,119,118,196,190,194,127,122,125,111,39,45,25,45,0,0,0,0,0,0,0,0,0,0,0,0,-9,0,0,0,0,0,0,0,-12,0,-70,-70,-70,-70,-70,-70,-70,-69,-1122,-1060]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c6 7. O-O Qa5 8. e4 e5 9. h3 Nbd7 10. Re1 exd4 11. Nxd4 Ne5 12. Bf1 Re8 13. Be3 c5 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3} 14. Nb3 Qb4 15. a3 Qb6 {White is slightly better.} 16. Nd2 Qd8 ({Wrong is} 16... Qxb2 $2 17. Na4 $18) 17. f4 Nc6 18. Bf2 b6 {[#]} 19. Nf3 $146 ({Predecessor:} 19. Bg2 Bb7 20. Nf1 Nd4 21. Qd3 {1-0 (37) Stefansson,H (2540)-Plischki,S (2422) Teplice 2014}) 19... Bb7 20. Qd3 Qd7 21. Rad1 {Strongly threatening e5.} Rad8 22. Bg2 Qc8 23. g4 h5 24. g5 Nh7 25. b3 Qb8 26. Nd5 Ne7 {[#]} (26... Qc8 $16) 27. f5 $1 $18 Nxd5 28. exd5 (28. cxd5 $18 Bc8 29. f6) 28... gxf5 $16 29. Nh4 Bc8 30. Qf3 ({White should try} 30. Kh1 $16) 30... Nxg5 $14 31. Qxh5 Ne4 32. Nxf5 (32. Be3 {feels hotter.} Nf6 33. Qg5 Nh7 34. Qg3 Kh8 35. Qf3) 32... Bxf5 33. Qxf5 Nxf2 34. Kxf2 Rxe1 35. Rxe1 {White wants to mate with Re7.} Re8 36. Be4 Qd8 37. Rg1 {Threatening mate with Qh7+.} Kf8 {Threatens to win with ...Bd4+.} 38. Kf3 Qh4 39. Rf1 Re5 40. Qc8+ Re8 41. Qf5 Bd4 42. a4 a5 43. Qf4 (43. Qg4 $1 $11 Qh6 44. Kg2) 43... Qxh3+ $15 {[%mdl 64] [#] Double Attack} 44. Ke2 $1 {[%csl Gf1][%cal Rf4f7][%mdl 512]} Ke7 {Played: Re8-e7} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "2.2"]
[White "Pogosyan, Stefan"]
[Black "Levin, Evgeny A."]
[Result "0-1"]
[ECO "E15"]
[WhiteElo "2477"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,94,18,25,15,3,0,15,-5,18,1,14,0,0,-21,0,0,0,0,0,0,-3,0,0,-28,-20,-13,-18,-35,-27,-29,-41,-60,0,0,16,-65,-60,-63,-68,-67,-57,-89,-26,-35,-26,-27,-34,-35,-35,-94,-89,-106,-107,-107,-105,-99,-103,-99,-108,-106,-101,-368,-367,-368,-367,-367,-367,-387,-380,-457,-457,-454,-444,-364,-352,-620,-616,-656,-593,-531,-476,-476,-476,-476,-466]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qc2 Bb7 6. Bg2 c5 7. d5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} exd5 8. cxd5 Nxd5 9. O-O {Ng5 is the strong threat.The position is equal.} Nc6 10. Rd1 Be7 11. a3 ({Worse is} 11. Rxd5 Nb4 $17) 11... Nc7 12. Nc3 $146 ({Predecessor:} 12. Bf4 Ne6 13. e3 Nxf4 14. exf4 O-O {½-½ (25) Jakovenko,D (2745)-Karjakin,S (2770) Kazan 2014}) 12... O-O 13. Bf4 Ne6 14. e3 Nxf4 15. exf4 d6 16. Nd5 h6 17. Rd2 Re8 18. Rad1 Bf8 19. b4 Qc8 20. Qb2 Rb8 21. Ne3 cxb4 (21... b5 $15) 22. axb4 $11 a5 23. Nd5 (23. bxa5 $11 bxa5 24. Qa1) 23... Nxb4 $15 24. Nxb4 axb4 25. Qxb4 Be4 26. Qb3 {[#]} Qb7 (26... b5 $1 $17) 27. Nh4 $11 b5 {[%cal Bb6b5,Bb5b4,Bb4c3][%mdl 32]} 28. Bxe4 Qxe4 29. Rd4 Qe6 30. Rd5 (30. Rb4 $15) 30... b4 31. Ng2 {[#]} Rec8 $1 32. R5d3 Qxb3 33. Rxb3 Rc3 34. Rxc3 bxc3 $17 {[%mdl 4096] Endgame KRB-KRN} 35. Ne3 {[#]} d5 $1 {[%mdl 512] White must now prevent ...Rb2.} 36. Rxd5 $2 {[%mdl 8192]} (36. Kg2 $17) 36... Rb2 $19 37. Rd8 c2 38. Nxc2 Rxc2 {KRB-KR} 39. f5 f6 40. g4 Kf7 41. Rd7+ Be7 42. Kg2 Kf8 43. Kg3 $2 (43. Rd1) 43... Bc5 {Black is clearly winning.} 44. f3 Bf2+ 45. Kg2 Bd4+ 46. Kf1 Be5 47. h3 Rh2 {Accuracy: White = 25%, Black = 80%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "2.3"]
[White "Hayrapetyan, Hovik"]
[Black "Matviishen, Viktor"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2458"]
[BlackElo "2497"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,125,0,2,-50,29,26,23,29,24,26,23,14,18,4,14,12,25,12,50,29,38,20,48,54,52,51,45,52,39,37,35,38,42,21,22,21,63,63,118,123,123,123,123,123,137,93,133,137,175,154,160,143,149,147,198,191,193,195,227,217,202,162,227,227,219,223,228,224,220,222,339,291,319,307,343,304,1953,3809,2104,1845,5089,4679,5431,3651,12000,8204,29957,29946,29965,29965,29969,29968,29970,29971,29965,29959,29981,29982,29982,29983,29983,29984]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. e3 e6 5. Nc3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 b5 9. Bd3 Bb7 10. O-O O-O 11. e4 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Kh1 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (14. h3 $11) (14. h3 Re8 15. Be3 h6 16. Rad1 Qc7 17. Ne2 c5 18. Bxb5 Bxe4 19. Qxc5 Qxc5 20. Bxc5 Reb8 21. a4 a6 {0-1 (64) Ding,L (2811)-Shankland,S (2705) chess.com INT 2019}) 14... c5 $146 ({Better is} 14... Ng4 $15 15. g3 Bd4) ({Predecessor:} 14... Ng4 15. h3 Qh4 16. Qe2 Rad8 17. Bc2 Bc8 18. f4 Bd4 19. Qf3 Nf2+ 20. Kh2 b4 21. Ne2 Ng4+ 22. Kh1 Nf2+ 23. Kh2 Ng4+ 24. Kh1 Nf2+ 25. Kh2 {½-½ (25) Sorin,A (2490)-Bertona,F (2405) Buenos Aires 2000}) 15. Bxb5 $11 Bxc3 16. Qxc3 {Black must now prevent f3.White has an edge.} Nxe4 17. Qc2 Qh4 18. Kg1 Nd6 19. Be2 Rfe8 20. Rd1 Re6 21. Be3 Rae8 22. Qxc5 Rg6 23. Bf1 Qe4 {[%cal Rg6g2]} 24. Bg5 h6 25. f3 $1 {[%cal Rf3e4]} Qf5 26. Qxf5 Nxf5 27. Rd8 Rxd8 28. Bxd8 Bxf3 29. Kf2 Bb7 30. Re1 Nd6 31. Re7 Rf6+ (31... Kf8 $14) 32. Kg1 $16 Re6 33. Rxe6 fxe6 {[%mdl 4096] Endgame KBB-KBN} 34. Bc7 Ne4 35. Be5 Kf7 36. b4 $1 a6 37. Bd3 Nf6 38. b5 Nd7 39. Bd6 ({Don't play} 39. bxa6 $6 Bxa6 40. Bxa6 Nxe5 $14) 39... axb5 (39... a5 $16 40. a3 Bd5) 40. Bxb5 $18 Nb6 41. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Bd5 42. a5 Nc4 43. Bc7 Ke7 {[#]} (43... e5 {might work better.} 44. a6 Ke6) 44. a6 $1 Nd6 45. Ba4 Nc8 {[#] intending ...Bc4.} 46. Bb8 $1 Nb6 47. Bb5 Kd8 (47... Kf6 $142 48. Kf2 e5) 48. Be5 g6 49. Bg7 Kc8 50. Bxh6 Bc4 $2 (50... Nc4 51. Be8 Ne5) 51. Bxc4 Nxc4 {KB-KN} 52. Kf2 Kc7 53. Be3 Kc6 54. Kf3 Ne5+ 55. Ke4 Nf7 56. h4 {White mates.} Kc7 57. g4 Kc6 58. g5 Kc7 59. Bd4 Kc6 60. Kf4 Kc7 {[#]} 61. h5 $1 {[%mdl 512]} gxh5 62. g6 Nh6 63. g7 {Accuracy: White = 83%, Black = 29%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "2.4"]
[White "Barseghyan, Armen Ar."]
[Black "Davtyan, Artur"]
[Result "0-1"]
[ECO "A15"]
[WhiteElo "2408"]
[BlackElo "2437"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,132,19,12,17,18,21,13,36,6,29,20,48,26,27,26,20,24,88,92,92,87,100,72,77,66,63,0,0,0,0,0,0,0,0,0,0,-6,-22,-67,-67,-67,-60,-71,29,0,0,-131,-116,-279,-272,-270,-206,-434,-54,-253,-253,-318,-317,-323,-325,-281,-300,-446,-446,-407,-428,-429,-400,-509,-506,-492,-485,-524,-493,-447,-441,-621,-604,-648,-582,-612,-601,-593,-572,-911,-856,-969,-796,-12837,-12838,-12838,-12839,-12840,-12840,-12841,-12838,-12838,-12839,-12839,-12839,-12838,-12835,-12840,-12841,-12842,-12842,-12844,-12844,-12845,-12845,-12845,-12846,-12846,-12847,-12847,-12848,-12848,-12848]} 1. c4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 O-O 5. g3 d6 6. Bg2 e5 7. O-O Nc6 8. d3 Re8 9. Nc3 h6 {A15: English Opening: 1...Nf6} (9... Bd7 10. e3 Ng4 11. h3 Nh6 12. Nd2 f5 13. Nd5 Nf7 14. Qc2 Be6 15. f4 Rb8 16. Rae1 Ne7 17. Nc3 {0-1 (68) Sethuraman,S (2673)-Lenderman,A (2626) Saint Louis 2018}) 10. Qd2 Be6 11. e4 a5 $146 {The position is equal.} ({Predecessor:} 11... Bg4 12. h3 Bxf3 13. Bxf3 Nd4 14. Bg2 Nh5 15. Ne2 Qg5 16. Qd1 c5 17. Nxd4 cxd4 {1-0 (28) Lins,P (2131)-Juergens,K (2125) Austria 2016}) 12. Nd5 Nd7 13. Rae1 Nc5 14. Bc3 Bg4 15. Nh4 Nd4 16. f4 Be6 (16... c6 $11 17. Ne3 Bh5) 17. f5 $16 Bxd5 18. cxd5 g5 {[#]} 19. f6 $1 {[%cal Rf6g7]} gxh4 20. fxg7 Qg5 21. Re3 (21. Qf2 $1 $14 Qxg7 22. Re3) 21... hxg3 $1 $11 ({Not} 21... Kxg7 $2 22. gxh4 Qe7 23. Rg3+ Kh7 24. Bxd4 $18) 22. Kh1 f5 ({Don't play} 22... gxh2 $6 23. Qf2 $16) 23. exf5 ({But not} 23. Rxg3 Qxd2 24. Bxd2 f4 $17) 23... Nxf5 {[%mdl 64] Double Attack} 24. Ref3 $1 {[%cal Rf3f5]} Qh4 {[%csl Gg3][%cal Rh4h2]} 25. h3 Nxg7 26. Qe3 $132 {[%mdl 2048] White is fighting back} Rf8 27. Rxg3 {Bxe5! is the strong threat.} Rxf1+ 28. Bxf1 {Hoping for Bxe5!} Rf8 29. Bg2 Kh8 (29... Kh7 $17 {Strongly threatening ...Nf5.} 30. Rg4 Qf2 31. Qxf2 Rxf2) 30. Rg4 (30. Bxe5 $5 dxe5 31. Qxc5 $14) 30... Qf6 {And now ...h5 would win.} 31. Bd2 (31. Bxe5 $11 Qxe5 32. Qxh6+ Kg8 {[#]} 33. d4 $1 {[%mdl 576] Double Attack}) 31... Nf5 $17 32. Qg1 $2 (32. Qf3 $17) 32... Nxd3 $19 {White must now prevent ...Nd4.} 33. Be4 {[#]} Nf4 $1 34. Kh2 $2 (34. Bxf4 exf4 35. Rg6 Ng3+ {[%mdl 64] Double Attack} 36. Kh2 Qb2+ 37. Qg2 Qxg2+ 38. Bxg2) 34... Ne7 $2 (34... h5 $19 35. Rg5 Nh6) 35. Bxf4 $2 ({White must play} 35. Qc1 $1 $15 Ne2 36. Qxc7) 35... exf4 36. Bf3 Nf5 37. Rg6 Qb2+ 38. Qg2 Qxg2+ 39. Rxg2 {[%mdl 4096] Endgame KRB-KRN} (39. Bxg2 {is the only way for White.} Kh7 40. Re6) 39... Nh4 40. Rf2 Nxf3+ 41. Rxf3 {KR-KR} Kg7 42. Kg2 Kg6 {Black is clearly winning.} 43. Rc3 Rf7 44. Rc1 Re7 45. Kf2 Kf5 46. Rc2 (46. h4 $142) 46... h5 47. Rc1 Rg7 48. Re1 b5 49. Re8 Rg3 50. Ra8 Rxh3 51. Rxa5 Ke4 52. Rxb5 Rh2+ 53. Kg1 Rxa2 54. Rb8 h4 55. Rh8 Ke3 56. Re8+ Kf3 57. Re7 Ra1+ 58. Kh2 Rc1 59. b4 Kf2 60. b5 f3 61. b6 cxb6 62. Re6 Kf1 63. Rxd6 f2 64. Re6 Re1 65. Rxb6 Ke2 66. Rb2+ Ke3 {Accuracy: White = 37%, Black = 64%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.10"]
[Round "2.5"]
[White "Galperin, Platon"]
[Black "Shahinyan, David"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2460"]
[BlackElo "2444"]
[Annotator "ChessBase"]
[PlyCount "99"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 Nc6 5. Ne2 Nb4 6. Nbc3 Nxd3+ 7. Qxd3 Ne7 8. O-O d6 9. f4 g6 10. f5 gxf5 11. Ng3 Rg8 12. d5 Qd7 13. Nh5 Bg7 14. exf5 Nxf5 15. Rxf5 exf5 16. Bg5 Be5 17. Re1 Kf8 18. Bh6+ Ke7 19. Bg7 Rxg7 20. Nxg7 Rg8 21. Nxf5+ Kd8 22. Nb5 c6 23. Nxa7 cxd5 24. cxd5 Rg5 25. Rf1 Qa4 26. Nc6+ Bxc6 27. dxc6 Qxc6 28. Qd2 Qc5+ 29. Kh1 Rh5 30. h3 Qc6 31. Qe3 f6 32. h4 Qc4 33. Rc1 Qb4 34. Qf3 Rxh4+ 35. Nxh4 Qxh4+ 36. Qh3 Qxh3+ 37. gxh3 Bxb2 38. Rc6 Ba3 39. Rxb6 Kc7 40. Rb3 Bc5 41. a4 Kc6 42. Kg2 Bb6 43. Kf3 d5 44. Kf4 Bd8 45. Rb5 h5 46. Kf5 h4 47. Rb4 Kc5 48. Rxh4 d4 49. Rh8 Ba5 50. Ke4 {Kd5+} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "3.1"]
[White "Shahinyan, David"]
[Black "Sargsyan, Anna M."]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2444"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,-52,-17,-57,-44,-70,-17,-23,-6,-4,0,-5,4,-10,-4,-27,22,10,31,0,22,34,29,1,26,12,5,16,10,34,112,110,90,111,100,112,106,105,88,96,80,89,91,92,94,96,102,92,101,89,156,150,201,190,176,182,268,264,344,343,477,444,500,493,487,445,435,419,404,329,322,322,322,322,1953,1889,1590,1158,29973,29974,29977,29978]} 1. c4 c6 2. g3 d5 3. Bg2 e5 4. b3 Nf6 5. Bb2 Bd6 6. d3 {A20: English Opening: 1...e5} O-O 7. Nd2 Qe7 $146 ({Black should try} 7... d4 $15) ({Predecessor:} 7... Re8 8. Ngf3 Bg4 {½-½ (8) Salgado Lopez,I (2559)-Llaneza Vega,M (2522) Villava 2009}) 8. Ngf3 $11 {The position is equal.} Bg4 9. O-O Nbd7 10. h3 Bh5 11. Nh4 Qe6 12. Qc2 d4 13. Rae1 Bc5 14. e3 dxe3 15. fxe3 Rfe8 16. a3 a5 17. g4 Bg6 18. Nxg6 hxg6 19. d4 $36 {[%mdl 2048] White is pushing.} exd4 ({Black should play} 19... Bb6 $14) 20. exd4 $16 {[%mdl 64] Discovered Attack} Qxe1 21. Rxe1 Rxe1+ 22. Kf2 Rae8 {And now ...R8e2+ would win.} 23. Nf3 (23. dxc5 R8e2+ 24. Kf3 (24. Kg3 $2 Rg1 $19) 24... Re3+ 25. Kf2 R3e2+ 26. Kf3 (26. Kg3 $2 Rg1 $19) 26... Ne4 $1 $17 {[%mdl 512]}) 23... R1e2+ 24. Qxe2 Rxe2+ 25. Kxe2 Bd6 26. Ne1 Nf8 27. Nd3 Ne6 28. b4 axb4 29. axb4 Kf8 {[#]} (29... Bh2 $142) 30. b5 $1 Nd8 (30... cxb5 $16 31. c5 (31. cxb5 b6 $14) 31... Bh2) 31. c5 $18 {aiming for bxc6.} Bc7 32. bxc6 Nxc6 (32... bxc6 $142 33. Nb4 Ne6) 33. d5 Na5 34. Bc3 Bd8 35. d6 Nc6 36. Ne5 Ba5 37. Bxa5 Nxa5 {[%mdl 4096] Endgame KBN-KNN} 38. Kd3 Ke8 {Now ...Nd7 and Black clings on.} 39. Kc3 Nd7 40. Kb4 {Black must now prevent Nxd7.} Nxe5 41. Kxa5 Nc6+ $2 (41... Kd7 42. Bxb7 Nc4+ 43. Kb5 Nxd6+ 44. cxd6 Kxd6) 42. Kb6 {[%mdl 64] Double Attack} Kd7 43. Kxb7 Nd8+ 44. Kb6 f5 45. Bd5 {Accuracy: White = 74%, Black = 43%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "3.2"]
[White "Davtyan, Artur"]
[Black "Galperin, Platon"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2437"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,70,48,45,43,49,42,44,38,50,43,40,43,42,-6,0,0,0,0,7,4,57,0,0,-4,-5,-20,-5,-10,-17,-50,-41,-132,-39,-54,-47,-240,-237,-249,-243,-405,-405,-405,-402,-386,-378,-562,-471,-560,-555,-552,-543,-514,-531,-525,-510,-1129,-1103,-1058,-1024,-1235,-1241]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 Nc6 7. Nf3 {E73: King's Indian: Averbakh Variation without 6...c5} (7. d5 Ne5 8. h3 c6 9. Nf3 Nxf3+ 10. Bxf3 Nd7 11. Be2 Qa5 12. Bd4 Bh6 13. f3 c5 14. Bf2 b5 15. cxb5 {1-0 (38) Ganguly,S (2633)-Guseinov,G (2666) Moscow 2019}) 7... Ng4 8. Bg5 h6 9. Bh4 {White is slightly better.} g5 10. Bg3 e5 {[%cal Re5d4]} 11. d5 Nd4 12. Nd2 $146 ({Predecessor:} 12. Nxd4 exd4 13. Nb5 Nf6 14. f3 Nh5 {0-1 (56) Muradli,M (2459)-Galperin,P (2469) Corum 2019}) 12... f5 $36 {[%mdl 2048] Black has good play.} 13. exf5 $1 Nxe2 14. Qxe2 Bxf5 15. Nde4 Qe8 ({Black should try} 15... Nf6 $11) 16. c5 (16. h4 $14) 16... Nf6 $11 17. cxd6 Nxe4 18. Nxe4 Qg6 19. f3 cxd6 20. Rc1 h5 21. Rc4 (21. h3 $15) 21... Rf7 ({Better is} 21... g4 $1 $17 22. O-O gxf3 23. Rxf3 b5 24. Rxf5 Rxf5) 22. O-O Raf8 {...b5 is the strong threat.} 23. h3 $2 (23. a4 $1 $15) 23... b5 $19 24. Rcc1 g4 $1 {[%cal Rg4f3] Threatens to win with ...gxf3.} 25. Kh2 $2 (25. Rce1 gxh3 26. Kh2) 25... gxf3 26. gxf3 {[#] intending Rg1.} h4 $1 {[%mdl 512]} 27. Bxh4 Qh6 28. Bg5 (28. Qg2 {might work better.} Bxe4 29. Bg5) 28... Qxh3+ {Black is clearly winning.} 29. Kg1 Bxe4 30. fxe4 Rf3 $1 {[%cal Rf3g3]} ({Worse is} 30... Qg3+ 31. Qg2 $11) 31. Rxf3 Rxf3 32. Rc3 {[#]} Qg3+ $1 {[%mdl 64] Double Attack} 33. Qg2 {[#]} (33. Kh1 $142 Rxc3 34. bxc3 Qxg5 35. Qxb5) 33... Qe1+ $1 {[%mdl 64] Double Attack} 34. Kh2 Rf2 35. Rc8+ Kh7 {Accuracy: White = 36%, Black = 77%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "3.3"]
[White "Matviishen, Viktor"]
[Black "Barseghyan, Armen Ar."]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "2497"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,120,12,20,17,-7,-7,-35,-6,-35,10,11,27,32,41,43,47,47,41,44,43,44,51,24,20,17,18,16,24,24,36,47,70,26,40,34,36,25,34,35,30,29,46,0,0,0,0,0,0,0,27,0,0,0,0,0,4,4,31,2,0,0,0,0,47,-191,-185,-249,-255,-226,-231,-493,-498,-1075,-756,-745,-737,-710,-712,-596,-447,-1604,-1572,-1723,-1730,-1585,-1591,-3323,-3000,-29987,-29983,-29983,-29984,-29984,-29985,-29985,-29984,-29986,-29982,-29987,-29988,-29988,-29989]} 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 d5 5. Nf3 c6 6. O-O Bd6 7. b3 Qe7 8. Bb2 b6 9. Ne5 Bb7 10. Nd2 O-O 11. Ndf3 a5 {A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6)} 12. Bc1 $146 ({Predecessor:} 12. Rc1 Na6 13. Nd3 Rfd8 14. Nfe5 Rac8 15. e3 Ne4 16. f3 Nf6 17. g4 c5 18. g5 Nd7 19. f4 Bxe5 20. fxe5 Qxg5 {0-1 (52) Fridman,D (2628)-Nikolic,P (2646) Germany 2007}) 12... Ne4 13. Nd3 Nd7 {Black is slightly better.} 14. Nfe5 Bxe5 (14... c5 {seems wilder.} 15. cxd5 exd5 16. Bb2 a4 17. Rc1 a3) 15. dxe5 Nec5 16. Ba3 b5 17. Rc1 b4 18. Bb2 Rfc8 19. Nxc5 Nxc5 20. Bd4 Nd7 21. c5 Ba6 22. Qd2 Rcb8 23. f3 a4 24. Rfe1 (24. bxa4 Bc4 $17) 24... axb3 25. axb3 Rb5 26. Qc2 Bc8 27. e4 Nf8 28. Ra1 Ra3 29. Rxa3 bxa3 30. Ra1 Qa7 31. Qa2 Ra5 32. b4 Ra4 33. Qb3 a2 34. Bb2 Ng6 {[%cal Bf8g6,Bg6e7,Be7f5][%mdl 32]} 35. Kh1 Ne7 36. exf5 Nxf5 37. Bf1 Qa8 38. Bd3 Ra7 39. Bc2 Qb7 40. Qc3 Qb5 41. Bd3 Qb8 42. g4 $2 (42. Qd2 $14 {stays ahead.}) 42... Nh4 $1 $19 43. f4 {[#]} (43. Qe1 $142 Nxf3 44. Qe2) 43... Ba6 $1 {[%cal Ra6d3]} 44. Bxa6 Rxa6 45. f5 $2 (45. Qe1 {was called for.} Ng6 46. f5) 45... Qb5 46. Qg3 (46. Qe1 $142 Qd3 47. Qxh4 Qe4+ 48. Kg1 Qb1+ {[%mdl 64] Double Attack} 49. Qe1 (49. Bc1 $2 Ra8 $19) 49... Qxb2 50. fxe6) 46... Qe2 47. Qxh4 Ra8 48. Qe1 Qxb2 49. fxe6 {[%mdl 4096] Endgame KQR-KQR} Qd4 50. b5 (50. g5 $142) 50... cxb5 51. c6 b4 52. c7 b3 53. Rc1 Rc8 {( -> ...b2)} 54. Qh4 Qe4+ {Black mates.} ({Stronger than} 54... a1=Q 55. Qd8+ Rxd8 56. cxd8=Q#) 55. Kg1 Qe3+ 56. Kg2 g5 ({Weaker is} 56... Qxc1 {[#]} 57. Qd8+ $1 {[%mdl 512]} Rxd8 58. cxd8=Q#) 57. Qh5 Qe4+ 58. Kg3 Qg6 59. e7 Qxh5 60. gxh5 Kf7 {Accuracy: White = 46%, Black = 65%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "3.4"]
[White "Levin, Evgeny A."]
[Black "Hayrapetyan, Hovik"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2527"]
[BlackElo "2458"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,15,0,5,0,35,37,37,18,16,18,23,0,0,0,17,1,11,6,0,10,16,16,17,24,23,-32,-30,-97,-92,-87,-87,-87,-87,-163,-175,-151,-177,-161,-153,-154,-82,-83,-76,-58,-39,-48,-50,-302,-289,-6738,-6756,-2524,-2068,-12826,-12826,-1320,-11577,-1491,-696,-12831,-6778]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Be2 b6 9. O-O Bb7 10. Bb2 Qe7 11. Rad1 Rfd8 {D45: Semi-Slav: 5 e3} (11... Rad8 12. Rfe1 Rfe8 13. Bf1 c5 14. cxd5 exd5 15. g3 Rc8 16. Qb1 cxd4 17. Nxd4 Bb4 18. Qa1 Ne5 19. Bg2 Qd7 20. a3 Bc5 21. Nce2 Ne4 22. Nf4 {½-½ (22) So,W (2760)-Giri,A (2776) Kolkata 2019}) 12. Rfe1 Ba3 $146 ({Predecessor:} 12... Bb4 13. Bd3 h6 14. Re2 Rac8 15. e4 dxc4 16. Bxc4 b5 17. Bd3 c5 18. Bxb5 cxd4 19. Rxd4 Bxc3 20. Bxc3 {½-½ (53) Esipenko,A (2564)-Dreev,A (2653) Riadh 2017}) 13. Bxa3 Qxa3 {White is slightly better.} 14. Ne5 Rac8 15. f4 Qf8 16. cxd5 cxd5 {And now ...Nxe5 would win.} 17. Qb2 a6 18. b4 Rc7 19. Rc1 Rdc8 20. a4 Nxe5 21. fxe5 Ne4 22. Nxe4 dxe4 23. Bf1 (23. Rxc7 $11 Rxc7 24. Rc1) 23... h6 $15 24. Kf2 (24. Rxc7 $11 {remains equal.} Rxc7 25. Be2) 24... Rxc1 $17 25. Rxc1 Rxc1 26. Qxc1 {Strongly threatening Qc7.} Qxb4 27. Qc7 (27. Qc2 $17) 27... Qd2+ $19 28. Be2 Bd5 {Hoping for ...Kh7.} 29. Qc8+ Kh7 {...b5 is the strong threat.} 30. Qxa6 Bb3 ({Black should play} 30... g6 $1 31. Qb5 Kg7) 31. Qb5 $17 Qa2 32. Ke1 Bc2 33. Qb4 Qxa4 34. Qxb6 $2 {[%mdl 8192]} ({White should try} 34. Qxa4 $15 Bxa4 35. Kd2) 34... Qa3 $1 $19 {[%cal Ra3c3]} 35. d5 $2 (35. Qc7 Qc1+ 36. Kf2) 35... Qc3+ {Black is clearly winning.} 36. Kf2 {[#]} Bd3 $1 37. dxe6 {[#]} Qd2 $1 {[%mdl 512]} 38. exf7 Qxe2+ 39. Kg3 {[#]} Qe1+ $1 40. Kh3 Qf2 {Accuracy: White = 38%, Black = 66%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.1"]
[White "Sargsyan, Anna M."]
[Black "Pogosyan, Stefan"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "2382"]
[BlackElo "2477"]
[Annotator "ChessBase"]
[PlyCount "90"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6 7. O-O e5 8. d5 Nb8 9. e4 a5 10. Ne1 Na6 11. Nd3 Nd7 12. Be3 Ndc5 13. f4 exf4 14. Bxc5 Nxc5 15. Nxc5 f3 16. Nxb7 Bxb7 17. Qxf3 Bc8 18. Rae1 Be5 19. Qd3 h5 20. b3 h4 21. Nb5 hxg3 22. hxg3 a4 23. b4 Qg5 24. Re3 Bd7 25. Nd4 a3 26. c5 Rfb8 27. Nf3 Qxg3 28. Nxe5 Qxe5 29. c6 Bg4 30. Rb1 Ra4 31. Qc3 Qxc3 32. Rxc3 Rbxb4 33. Rxb4 Rxb4 34. Rxa3 f5 35. exf5 gxf5 36. Rb3 Rxb3 37. axb3 Kf7 38. b4 Kf6 39. b5 f4 40. Kf2 Ke5 41. Bf3 Bf5 42. Bg2 Bc8 43. Kf3 Kxd5 44. Kxf4+ Kc5 45. Bf1 Be6 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.2"]
[White "Hayrapetyan, Hovik"]
[Black "Sturua, Zurab"]
[Result "*"]
[ECO "D05"]
[WhiteElo "2458"]
[BlackElo "2530"]
[Annotator "ChessBase"]
[PlyCount "37"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 c5 5. b3 Nc6 6. O-O Bd6 7. Bb2 O-O 8. Nbd2 b6 9. a3 Bb7 10. Ne5 Rc8 11. f4 Ne7 12. Qf3 b5 13. dxc5 Bxc5 14. b4 Bb6 15. Bd4 Ne4 16. Qe2 Nf5 17. Nb3 Nfd6 18. a4 bxa4 19. Rxa4 *

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.2"]
[White "Barseghyan, Armen Ar."]
[Black "Levin, Evgeny A."]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2408"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "72"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 c5 5. b3 Nc6 6. O-O Bd6 7. Bb2 O-O 8. Nbd2 b6 9. a3 Bb7 10. Ne5 Rc8 11. f4 Ne7 12. Qf3 b5 13. dxc5 Bxc5 14. b4 Bb6 15. Bd4 Ne4 16. Qe2 Nf5 17. Nb3 Nfd6 18. a4 bxa4 19. Rxa4 f6 20. Nf3 Nc3 21. Bxc3 Rxc3 22. Nc5 Bxc5 23. bxc5 Rxc5 24. Rxa7 Ra5 25. Rxa5 Qxa5 26. Nd4 Bc8 27. Qh5 g6 28. Bxg6 hxg6 29. Qxg6+ Kh8 30. Qh6+ Kg8 31. Qg6+ Kh8 32. Nc6 Qc7 33. Qh6+ Kg8 34. Qg6+ Kh8 35. Qh6+ Kg8 36. Qg6+ Kh8 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.3"]
[White "Hayrapetyan, Hovik"]
[Black "Sturua, Zurab"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2458"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,125,0,0,-17,-10,-16,-1,-17,-8,-26,-21,-14,0,0,0,-9,-10,-10,-10,-14,-9,-10,0,0,0,-8,-2,-1,0,0,-4,-10,0,-25,0,0,0,-15,0,0,0,0,0,0,0,0,11,0,0,-29,0,-11,0,0,0,0,14,13,14,13,9,14,38,0,7,2,7,8,87,9,14,16,15,0,15,9,21,0,0,-64,-56,-54,0,0,0,0,0,0,0,-45,-5,-78,0,0,363,341,326,277,29992,29993,29996,29997,29997,29998]} 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bxf6 Bxf6 7. cxd5 exd5 8. e3 O-O 9. Qb3 c6 10. Bd3 Re8 11. O-O Nd7 12. Qc2 Nf8 13. Bf5 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2)} (13. b4 Bg4 14. Nd2 Qd6 15. Qb3 Bd8 16. Rfc1 Bc7 17. Nf1 Ng6 18. b5 Nh4 19. bxc6 bxc6 20. Qc2 Bf3 21. gxf3 {1-0 (38) Salkic,M (2020)-Alic,S (2051) Bosanska Krupa 2018}) 13... Be7 $146 ({Predecessor:} 13... Bxf5 14. Qxf5 g6 15. Qh3 Kg7 16. Rac1 Ne6 17. Qg3 Ng5 18. Nd2 h5 19. f4 Ne4 20. Ndxe4 dxe4 {0-1 (53) Johnson,B-Jarosz,S Detroit East 1983}) 14. Rab1 a5 15. a3 {The position is equal.} Bd6 16. Rfc1 Bxf5 17. Qxf5 a4 18. Qc2 Qa5 19. b4 axb3 20. Rxb3 Ra7 21. a4 Re7 22. Rcb1 Qd8 23. R1b2 Ne6 24. Qb1 {[%cal Rb3b7]} Qd7 25. g3 Nd8 26. Kg2 Bc7 27. h3 Qe8 28. Ra2 Ba5 29. Ne2 Bc7 30. Nc1 Ba5 31. Nd3 Rc7 32. Nf4 Re7 33. h4 Ra8 34. Nd3 Rc7 35. Nc5 {[%cal Rc5b7]} b6 36. Nd3 Nb7 {[%cal Bd8b7,Bb7d6,Bd6e4][%mdl 32]} 37. Rc2 Nd6 38. h5 Rac8 39. Nf4 Qe4 40. Rc1 Qe8 41. Qd3 Ne4 42. Rb2 Rd8 43. Qb3 Rd6 44. Rbc2 Qd8 45. Qd3 {Threatening Nxd5!} c5 (45... Ng5 $11) 46. Nxd5 (46. Ne5 $1 $16) 46... Nxf2 $1 $11 47. Rxf2 Rxd5 48. e4 $1 {[%cal Re4d5]} Rxh5 49. g4 {[#]} Rg5 $1 {[%cal Rg5g4][%mdl 512]} 50. Nxg5 Qxg5 {[%mdl 64] Double Attack} 51. Rc4 ({White should try} 51. Qd1 $11) 51... Qxg4+ $15 52. Kf1 Rc6 (52... Re7 $15 53. d5 Qd7) 53. Qf3 $36 {[%mdl 2048] White has good play.} Qd7 54. Qf5 Qc7 55. e5 {d5 is the strong threat.} Re6 56. Qf4 Qe7 57. dxc5 (57. Qe4 $11 {keeps the balance.}) 57... bxc5 (57... Rxe5 $17 {White must now prevent ...Qe6.} 58. c6 b5 59. axb5 Qe6 60. Qxf7+ Qxf7 61. Rxf7 Kxf7) 58. Rxc5 Bb6 $2 {[%mdl 8192]} (58... Qd7 $11 {and Black has nothing to worry.} 59. Rxa5 Qd1+ 60. Kg2 Rg6+ 61. Kh3 Qh5+ 62. Qh4 Qd1) 59. Rc8+ $18 Kh7 {[#]} 60. Qe4+ $1 ({Weaker is} 60. Qxf7 Bxf2 61. Qg8+ Kg6 $15) 60... g6 $2 {[#]} (60... Rg6 $18 61. Qa8 Rg4 62. Rh8+ Kg6) 61. Qa8 $1 {[%mdl 512] White mates.} g5 62. Rh8+ Kg6 63. Qe4+ {Accuracy: White = 57%, Black = 43%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.3"]
[White "Barseghyan, Armen Ar."]
[Black "Levin, Evgeny A."]
[Result "*"]
[ECO "D36"]
[WhiteElo "2408"]
[BlackElo "2527"]
[Annotator "ChessBase"]
[PlyCount "45"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bxf6 Bxf6 7. cxd5 exd5 8. e3 O-O 9. Qb3 c6 10. Bd3 Re8 11. O-O Nd7 12. Qc2 Nf8 13. Bf5 Be7 14. Rab1 a5 15. a3 Bd6 16. Rfc1 Bxf5 17. Qxf5 a4 18. Qc2 Qa5 19. b4 axb3 20. Rxb3 Ra7 21. a4 Re7 22. Rcb1 Qd8 23. R1b2 *

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.4"]
[White "Galperin, Platon"]
[Black "Matviishen, Viktor"]
[Result "0-1"]
[ECO "D43"]
[WhiteElo "2460"]
[BlackElo "2497"]
[Annotator "ChessBase"]
[PlyCount "42"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bh4 dxc4 7. e4 g5 8. Bg3 b5 9. h4 g4 10. Ne5 h5 11. Be2 Bg7 12. O-O b4 13. Nxc4 bxc3 14. Nd6+ Kf8 15. bxc3 Ne8 16. Nxc8 Qxc8 17. f3 c5 18. fxg4 cxd4 19. cxd4 Nc6 20. d5 Nd4 21. Rc1 Qxc1 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.12"]
[Round "4.5"]
[White "Shahinyan, David"]
[Black "Davtyan, Artur"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2444"]
[BlackElo "2437"]
[Annotator "ChessBase"]
[PlyCount "129"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. c4 dxc4 5. Na3 Bxa3 6. bxa3 O-O 7. Qc2 Nc6 8. Bb2 Qd6 9. Qxc4 e5 10. O-O Be6 11. Qc2 Rfe8 12. Rfc1 Rad8 13. d3 Bd5 14. Qc5 e4 15. dxe4 Nxe4 16. Qc2 Qh6 17. Rd1 Nf6 18. Nh4 Bxg2 19. Kxg2 Nd5 20. Nf5 Qe6 21. Bxg7 Qxe2 22. Qxe2 Rxe2 23. Kf1 Re6 24. Rac1 f6 25. Bh6 Re5 26. g4 Rde8 27. Rd3 Nce7 28. Nxe7+ R8xe7 29. f4 Ne3+ 30. Ke2 R5e6 31. Kf3 f5 32. Rd8+ Re8 33. Rxe8+ Rxe8 34. Rxc7 Nxg4 35. Bg5 Re3+ 36. Kg2 Rxa3 37. Rxb7 Rxa2+ 38. Kg3 Nxh2 39. Bf6 Nf1+ 40. Kf3 Nh2+ 41. Kg3 h6 42. Bb2 Ng4 43. Kh4 Ra6 44. Kh5 Rb6 45. Rxb6 axb6 46. Kg6 Ne3 47. Bd4 Nc4 48. Kxf5 Kf7 49. Kg4 b5 50. Bc5 Nd2 51. Kf5 Nb3 52. Bb6 b4 53. Ke4 h5 54. Bf2 Na5 55. Bh4 Nc4 56. Kd3 Nd6 57. Be1 b3 58. Kc3 Ke6 59. Kxb3 Kd5 60. Kc3 Ke4 61. Kd2 Kf3 62. Bh4 Kg4 63. Bd8 Nf5 64. Ke2 Kg3 65. Kf1 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.15"]
[Round "5.1"]
[White "Davtyan, Artur"]
[Black "Sargsyan, Anna M."]
[Result "1-0"]
[ECO "D17"]
[WhiteElo "2437"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,81,24,14,43,37,36,31,19,17,19,0,136,122,134,139,160,160,181,178,195,176,198,203,249,223,241,243,241,240,233,222,233,218,253,248,257,239,282,258,279,276,326,328,344,352,314,241,256,211,560,551,779,762,748,724,722,708,731,720,1039,1029,1027,1025]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 g5 {D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5} 12. Ne3 gxf4 13. Nxf5 O-O-O {White is slightly better.} 14. Qc2 Kb8 15. Rd1 {[#]} h5 $146 (15... Ng6 $11 {remains equal.}) ({Predecessor:} 15... Ng6 16. Qb3 Bc5 17. O-O Nf6 18. Qc4 Qe5 19. Nh6 fxg3 20. hxg3 Qh5 21. Bf3 Qg5 22. Kg2 Qxh6 23. Qxc5 Nf4+ 24. Kg1 Nh3+ 25. Kg2 Nf4+ 26. Kg1 {½-½ (26) Korobov,A (2605)-Ragger,M (2518) Beijing 2008}) 16. gxf4 $16 Ng6 17. e3 h4 18. h3 Nc5 19. O-O Ne6 20. Rxd8+ Qxd8 21. Rd1 Qf6 22. Qe4 Bc5 23. Rd7 {[#] White wants to mate with Rxb7+!} Rc8 24. Nd6 $40 {[%mdl 128] White attacks with force.} Bxd6 25. Rxd6 Qe7 26. Rd1 Nc5 27. Qc4 a5 28. Ne2 Na6 29. Nd4 {[%cal Rd4c6] [#] Nxc6+! is the strong threat.} Nb4 30. Nb3 Qc7 31. Qc5 b6 32. Qf5 {Threatens to win with Rd7.} Nf8 33. Nd4 Qe7 34. Rc1 c5 $2 (34... Kb7 35. Qg4 Qf6) 35. Nb5 $18 {White is clearly winning.} Qe6 36. Qh5 Nd7 37. Qf3 {[%csl Gg2][%cal Rf3b7]} Qc6 38. Qxc6 Nxc6 39. Rd1 Nf8 40. Rd6 Kb7 41. Rh6 {Accuracy: White = 90%, Black = 40%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "5.2"]
[White "Matviishen, Viktor"]
[Black "Shahinyan, David"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2497"]
[BlackElo "2444"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,109,33,33,0,0,16,13,0,17,8,17,4,18,0,30,11,24,0,0,0,0,-50,0,-22,-13,-29,0,-11,0,0,7,0,0,0,0,0,0,-66,0,-14,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,189,184,316,327,393,397,374,252,242,233,248,241,220,29,24,30,27,27,25,31,38,14,543,571,1271,1248,1166,1149,5545,759,629,621,12846,745,5218,1562,815,499]} 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 d5 5. Nh3 c6 6. O-O Bd6 7. Bf4 Be7 8. Nd2 {A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6)} (8. Qc2 O-O 9. Rd1 h6 10. Nc3 Qe8 11. Rac1 g5 12. Be5 Nbd7 13. f3 Nxe5 14. dxe5 Nd7 15. f4 dxc4 16. Nb1 gxf4 17. gxf4 {½-½ (55) Aronian,L (2792)-Carlsen,M (2855) Leuven 2016}) 8... Qb6 9. Nf3 $146 ({Predecessor:} 9. Qc2 Qxd4 10. Be3 {½-½ (10) Linna,A (2554)-Bern,I (2592) ICCF corr 2002}) 9... Qxb2 10. c5 {The position is equal.} Qa3 11. Qc2 Qa5 12. a4 O-O 13. Rfb1 Na6 14. Ne5 Qd8 15. f3 Nd7 16. Nxd7 Qxd7 17. Nf2 b6 18. Nd3 bxc5 19. dxc5 Bf6 20. Bd6 Bxa1 21. Rxa1 Rb8 22. Qc3 Qb7 23. Qa5 Re8 24. f4 Qb3 25. Rf1 (25. Bf1 $11) 25... Bb7 (25... Ra8 $15) 26. Bf3 $11 Rbd8 27. Kg2 g6 28. h4 h5 $1 29. Ne5 Kg7 30. Nd3 Kh7 31. Ra1 Rd7 32. Qe1 Rg7 33. Rb1 Qa2 34. Rb2 Qxa4 35. Qc3 {[#]} e5 $1 36. fxe5 (36. Nxe5 Rd8) 36... f4 $2 (36... Bc8 $11) 37. Nxf4 $18 Bc8 {[#]} (37... Qc4 $142 38. Qxc4 dxc4) 38. e6 $1 {[%mdl 512]} d4 (38... Bxe6 39. Qf6) 39. Qc1 {Played: Qc3-d3} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.15"]
[Round "5.2"]
[White "Matviishen, Viktor"]
[Black "Shahinyan, David"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2497"]
[BlackElo "2444"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,109,13,40,0,0,0,0,26,32,16,22,8,25,-11,26,13,22,0,0,0,2,-43,0,-1,-3,-15,0,-18,0,0,23,-14,0,0,0,0,0,-27,0,0,0,0,0,0,0,0,17,0,0,0,0,0,0,0,0,0,0,0,0,0,204,178,308,287,388,403,336,276,261,230,258,244,204,30,32,35,37,45,35,31,49,18,626,611,1033,1065,1064,1068,1785,673,549,547,29969,698,5197,1010,897,881]} 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 d5 5. Nh3 c6 6. O-O Bd6 7. Bf4 Be7 8. Nd2 {A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6)} (8. Qc2 O-O 9. Rd1 h6 10. Nc3 Qe8 11. Rac1 g5 12. Be5 Nbd7 13. f3 Nxe5 14. dxe5 Nd7 15. f4 dxc4 16. Nb1 gxf4 17. gxf4 {½-½ (55) Aronian,L (2792)-Carlsen,M (2855) Leuven 2016}) 8... Qb6 9. Nf3 $146 ({Predecessor:} 9. Qc2 Qxd4 10. Be3 {½-½ (10) Linna,A (2554)-Bern,I (2592) ICCF corr 2002}) 9... Qxb2 10. c5 {The position is equal.} Qa3 11. Qc2 {[%mdl 1024] White has compensation.} Qa5 12. a4 O-O 13. Rfb1 Na6 14. Ne5 Qd8 15. f3 Nd7 16. Nxd7 Qxd7 17. Nf2 b6 {[%cal Rb6c5]} 18. Nd3 bxc5 19. dxc5 Bf6 20. Bd6 Bxa1 21. Rxa1 Rb8 22. Qc3 Qb7 23. Qa5 Re8 24. f4 Qb3 25. Rf1 Bb7 26. Bf3 Rbd8 27. Kg2 g6 28. h4 h5 $1 29. Ne5 Kg7 30. Nd3 Kh7 31. Ra1 Rd7 32. Qe1 Rg7 33. Rb1 Qa2 34. Rb2 Qxa4 35. Qc3 {[#]} e5 $1 36. fxe5 (36. Nxe5 Bc8) 36... f4 $2 (36... Bc8 $1 $11 {and Black has nothing to worry.}) 37. Nxf4 {aiming for e6.} Bc8 {[#]} (37... Qc4 $142 38. Qxc4 dxc4) 38. e6 $1 $18 {[%mdl 512]} d4 (38... Bxe6 39. Qf6) 39. Qd3 {And now Bxh5 would win.} Rxe6 {White should prevent ...Re3.} 40. Nxe6 Bxe6 41. Qd2 {Played: Bf3-e4} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.14"]
[Round "5.3"]
[White "Levin, Evgeny A."]
[Black "Galperin, Platon"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "2527"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,40,20,12,20,20,20,19,19,22,23,20,10,10,10,11,28,27,25,20,26,24,36,22,31,37,70]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. dxe5 dxe5 9. Bg5 Bg4 {E97: King's Indian: Classical Main Line (6...e5 7 0-0 Nc6): 8 Be3 and 8 d5 Ne7, not 9 Ne1} (9... Qxd1 10. Rfxd1 h6 11. Be3 Bg4 12. h3 Bxf3 13. Bxf3 Rfd8 14. Nd5 Ne8 15. Rac1 a5 16. c5 a4 17. Be2 Nd4 18. Bxd4 exd4 19. c6 b6 20. Bd3 Ra5 21. Rc4 {0-1 (61) Lenic,L (2645)-Vachier Lagrave,M (2780) chess.com INT 2019}) 10. Qxd8 Nxd8 11. Bxf6 ({Much worse is} 11. Nxe5 Bxe2 12. Nxe2 Nxe4 $17) 11... Bxf6 {The position is equal.} 12. Nd5 {[%mdl 64] [#] Double Attack} Kg7 13. Nxc7 ({Reject} 13. Nxf6 Kxf6 14. Rae1 Bxf3 $17) 13... Rc8 14. Nd5 Bxf3 15. gxf3 Bg5 16. Kg2 Ne6 17. Rh1 $146 ({Predecessor:} 17. b4) 17... Bh4 18. Bd3 f5 19. exf5 gxf5 20. Rhe1 e4 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.13"]
[Round "5.4"]
[White "Sturua, Zurab"]
[Black "Barseghyan, Armen Ar."]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2530"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,42,27,3,11,0,1,-2,-12,-17,0,0,108,108,105,98,97,99,183,191,235,220,252,245,234,233,229,228,246,230,434,0,309]} 1. Nf3 c5 2. c4 g6 3. g3 b6 4. Bg2 Bb7 5. Nc3 Bg7 6. O-O Nf6 7. d3 d5 {A30: Symmetrical English: Double Fianchetto and Hedgehog} (7... Nc6 8. e4 O-O 9. h3 d6 10. Be3 Rc8 11. b3 e5 12. Qd2 Nh5 13. Rab1 Kh8 14. Bh6 f5 15. Bxg7+ Nxg7 16. Qh6 Qd7 17. Nh4 Ne7 18. f4 fxe4 19. dxe4 {1-0 (41) Bacrot,E (2730)-Zhao,X (2579) Cap d'Agde 2013}) 8. Ne5 O-O $1 9. Bf4 e6 10. Rc1 $146 ({Predecessor:} 10. Qd2 Nh5 11. cxd5 exd5 12. Rad1 Re8 13. Nf3 Nxf4 14. Qxf4 Na6 15. d4 Nc7 16. dxc5 bxc5 {½-½ (31) Balleer,D (2264)-Chomicki,H (2130) ICCF email 2012}) 10... Qe7 11. Bg5 h6 (11... Qc7 $11 12. f4 Nbd7) 12. cxd5 $1 $16 exd5 13. Nxd5 Bxd5 14. Bxf6 $1 Qb7 (14... Qe6 $16 {was worth a try.} 15. Bxg7 Kxg7) 15. Bxg7 $18 Kxg7 16. e4 Be6 17. d4 Nd7 18. Nd3 {d5 is the strong threat.} cxd4 19. Nf4 Rad8 20. Qxd4+ Nf6 $2 {[#]} (20... Kg8 21. Nxe6 fxe6) 21. e5 $2 (21. Qxf6+ $1 $18 {[%mdl 512]} Kxf6 {[#]} 22. e5+ $1 {[%mdl 576] Discovered Attack} Kxe5 23. Bxb7) 21... Nd5 $2 {[%mdl 8192] Accuracy: White = 60%, Black = 38%.} (21... Qxg2+ $1 $11 {and Black is okay.} 22. Kxg2 Rxd4 23. Nxe6+ fxe6) 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.14"]
[Round "5.4"]
[White "Sturua, Zurab"]
[Black "Barseghyan, Armen Ar."]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2530"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,41,29,2,0,10,10,-8,2,-15,0,0,100,97,93,106,97,96,179,173,226,247,233,232,239,240,240,236,233,232,453,449]} 1. Nf3 c5 2. c4 g6 3. g3 b6 4. Bg2 Bb7 5. Nc3 Bg7 6. O-O Nf6 7. d3 d5 {A30: Symmetrical English: Double Fianchetto and Hedgehog} (7... Nc6 8. e4 O-O 9. h3 d6 10. Be3 Rc8 11. b3 e5 12. Qd2 Nh5 13. Rab1 Kh8 14. Bh6 f5 15. Bxg7+ Nxg7 16. Qh6 Qd7 17. Nh4 Ne7 18. f4 fxe4 19. dxe4 {1-0 (41) Bacrot,E (2730)-Zhao,X (2579) Cap d'Agde 2013}) 8. Ne5 O-O $1 9. Bf4 e6 {The position is equal.} 10. Rc1 $146 ({Predecessor:} 10. Qd2 Nh5 11. cxd5 exd5 12. Rad1 Re8 13. Nf3 Nxf4 14. Qxf4 Na6 15. d4 Nc7 16. dxc5 bxc5 {½-½ (31) Balleer,D (2264)-Chomicki,H (2130) ICCF email 2012}) 10... Qe7 11. Bg5 h6 {[#]} (11... Qc7 $11 12. f4 d4) 12. cxd5 $1 $16 exd5 13. Nxd5 Bxd5 14. Bxf6 $1 Qb7 (14... Qd6 $16 {was necessary.} 15. Nc4 Qxf6 16. Bxd5 Nc6) 15. Bxg7 $18 Kxg7 (15... Bxg2 $142 16. Bxf8 (16. Bxh6 Bxf1 17. Qxf1 Re8 $11) 16... Bxf1 17. Qxf1 Kxf8) 16. e4 Be6 17. d4 Nd7 18. Nd3 {Threatens to win with d5.} cxd4 19. Nf4 Rad8 20. Qxd4+ Nf6 $2 {[#]} (20... Kg8 21. Nxe6 fxe6) 21. Qxf6+ $1 {[%mdl 512] Accuracy: White = 79%, Black = 51%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.15"]
[Round "5.5"]
[White "Pogosyan, Stefan"]
[Black "Hayrapetyan, Hovik"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2477"]
[BlackElo "2458"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,82,8,18,0,0,0,18,7,9,-19,-24,-49,-39,-35,-33,-47,-38,-55,-52,-40,-4,0,-2,-17,0,0,0,1,10,14,8,15,22,0,0,-7,0,0,13,-41,13,6,2,0,0,-141,-159,-196,-193,-194,-180,-194,-180,-977,-321,-386,-289,-266,-273,-341,-354,-558,-441,-547,-417,-1018,-1004,-958,-931]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 Be7 7. Bc4 O-O 8. O-O a6 9. Qe2 {B56: Classical Sicilian: Unusual Lines} (9. a4 Nbd7 10. Re1 Qc7 11. b3 Nb6 12. Nd5 Nfxd5 13. Bxd5 Nxd5 14. exd5 Bg4 15. c4 f5 16. h3 Bh5 {0-1 (31) Sarwat,W (2236)-Vlassov,N (2384) Udaipur 2019}) 9... b5 $146 ({Predecessor:} 9... Qc7 10. Bg5 Be6 11. Bb3 Nbd7 12. Rfd1 h6 13. Bxf6 Nxf6 14. Nd5 Nxd5 15. Bxd5 Rac8 16. c3 Qb6 {½-½ (84) Ingvason,J (2142)-Schou Moldt,T (2228) Reykjavik 2014}) 10. Bb3 Bb7 11. Rd1 {The position is equal.} Nbd7 12. a3 Rc8 13. Nd5 Nxd5 14. Bxd5 Bxd5 15. Rxd5 Qc7 16. c3 Qc6 17. a4 {[%cal Ra4b5]} bxa4 {And now ...f5 would win.} 18. Be3 Nf6 19. Ra5 {[%mdl 64] Double Attack} Nxe4 20. Rxa6 Qd5 21. R1xa4 f5 22. R4a5 Qf7 23. Ra7 Qe6 24. Rb7 Bf6 25. Raa7 f4 26. Bb6 d5 27. h3 ({Better is} 27. Bc7 $11) 27... Rfe8 (27... Nd6 $15 28. Rc7 Nc4) 28. Bc7 $11 Nc5 {[%cal Be4c5,Bc5e6,Be6g5,Bg5f3][%mdl 32]} 29. Rb6 Qf5 30. Rb5 {[#]} (30. Rxf6 $11 gxf6 31. Qb5) 30... Ne6 $1 $36 {[%mdl 2048] Black is on the roll.} 31. Bxe5 {[#]} Ng5 $1 32. Rxd5 {aiming for Nxg5.} Nxf3+ 33. Qxf3 {Bxf6 is the strong threat.} Rxe5 34. Rdd7 $2 (34. Rxe5 Qxe5 35. Ra3) 34... Rce8 $2 (34... Re1+ 35. Kh2 Qb1 36. Rxg7+ {[%mdl 64] Decoy} Bxg7 37. Rxg7+ Kxg7 38. Qg4+ Kf6 39. Qxf4+ Qf5 40. Qd6+ Kf7) 35. Qb7 {[%cal Rd7g7]} Re1+ {Played: Qf5-g6} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.16"]
[Round "6.1"]
[White "Sargsyan, Anna M."]
[Black "Hayrapetyan, Hovik"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2382"]
[BlackElo "2458"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,0,10,0,13,-7,10,0,23,-11,11,16,29,26,66,20,45,48,60,51,70,74,84,19,35,22,57,67,67,68,168,164,318,53,141,137,127,125,141,0,52,51,42,51,44,42,47,11,57,43,43,46,45,46,52,54,64,51,107,16,30,27,24,30,31,39,31,14,668,668,2327,52,79,0,1813,613,2002,1951,29993,29993,29993,29994]} 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Nbd7 5. c4 dxc4 6. Bxc4 {D30: Queen's Gambit Declined: Systems without Nc3} a6 7. a4 $1 {[%mdl 4] outshines the older 7.0-0.} Bd6 8. O-O {The position is equal.} O-O 9. Nc3 e5 10. h3 {[#]} Qe7 $146 ({Predecessor:} 10... h6 11. Qc2 Re8 12. Ba2 Qe7 13. Nh4 Nf8 14. Nf5 Bxf5 15. Qxf5 c6 16. dxe5 Bxe5 {1-0 (46) Rahal,M (2355)-Arias Boo,G (2339) Barcelona 2015}) 11. Qc2 c5 12. a5 b5 13. axb6 $1 exd4 14. exd4 Nxb6 15. Re1 Qc7 16. Bd3 (16. Bg5 $16) 16... Bb7 17. Bg5 {Strongly threatening Bxf6.} Bxf3 18. Bxf6 $1 gxf6 19. gxf3 Kh8 ({Black should try} 19... cxd4 $14 20. Bxh7+ Kh8) 20. Bxh7 $18 Rg8+ $2 (20... cxd4 21. Ne2 Rg8+ 22. Kf1 Qxc2 23. Bxc2 Nc4) 21. Kh1 $2 ({Only move:} 21. Bxg8 $18 Rxg8+ 22. Kf1) 21... Rg7 (21... Rg5 $1 $14 22. Bf5 cxd4) 22. Bf5 $16 cxd4 {[#]} 23. Qd2 $1 {[%cal Rd2h6] Threatens to win with Qh6+.} Rg5 ({Not} 23... dxc3 $2 24. Qh6+ Kg8 25. Rg1 $18) 24. Ne4 (24. Qxd4 $16 Rxf5 25. Qh4+ Kg7 26. Rg1+ Kf8 27. Rae1) 24... Nc4 (24... Bf4 $11 25. Qa5 Rh5) 25. Qxd4 $14 Be5 $1 {[%cal Re5d4]} ({Wrong is} 25... Rxf5 $2 26. Nxf6 Rf4 27. Qd5 $16) 26. Qd7 Qxd7 27. Bxd7 Rgg8 28. Bc6 Ra7 29. f4 {Played: Bc6-b5} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.16"]
[Round "6.2"]
[White "Barseghyan, Armen Ar."]
[Black "Pogosyan, Stefan"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2408"]
[BlackElo "2477"]
[Annotator "ChessBase"]
[PlyCount "202"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O d5 6. b3 Bd6 7. Bb2 c5 8. Nbd2 O-O 9. dxc5 bxc5 10. c4 Nbd7 11. Rc1 a5 12. Bb1 a4 13. Re1 Qb8 14. g3 Re8 15. Ng5 h6 16. Nh3 Be5 17. Bxe5 Nxe5 18. cxd5 Bxd5 19. e4 axb3 20. axb3 Bc6 21. f4 Ned7 22. e5 Nd5 23. Nc4 f5 24. Nd6 Rf8 25. Bd3 Ra2 26. Bc4 Qb4 27. Nf2 N7b6 28. Nd3 Qa3 29. Re2 Rxe2 30. Qxe2 Nxc4 31. Nxc4 Qxb3 32. Nxc5 Nc3 33. Qd3 Qa2 34. Nd2 Ne4 35. Ncxe4 fxe4 36. Qc2 Qxc2 37. Rxc2 Bd5 38. Nf1 g5 39. Rf2 gxf4 40. gxf4 Ra8 41. Ne3 Ra3 42. Re2 Rd3 43. Kf2 Bb3 44. Rb2 Kg7 45. Ke2 Rc3 46. Rb1 Kg6 47. Rg1+ Kh5 48. Rg7 Ba4 49. Kf2 Rb3 50. Nf1 Rf3+ 51. Kg2 Rxf4 52. Ng3+ Kh4 53. Rg6 h5 54. Rxe6 e3 55. Rf6 Rxf6 56. exf6 Bb3 57. Ne4 Bd5 58. Kg1 Kg4 59. Nd6 Kf3 60. Kf1 e2+ 61. Ke1 Kg2 62. Kxe2 Kxh2 63. Ke3 h4 64. Nf5 h3 65. Kf2 Kh1 66. Ne7 Bf7 67. Nc6 Bd5 68. Ne5 Be6 69. Nf3 Bd5 70. Kg3 Be6 71. Ng5 Kg1 72. Nxh3+ Kf1 73. Ng5 Bg8 74. Kf3 Bd5+ 75. Kf4 Kf2 76. Ke5 Bg8 77. Kd6 Kg3 78. Ke7 Kh4 79. Ne4 Kh5 80. Kf8 Ba2 81. Nc5 Kg6 82. Ke7 Bf7 83. Nd7 Bg8 84. Ke8 Ba2 85. Kf8 Bf7 86. Ke7 Bg8 87. Ne5+ Kg5 88. Nc6 Kg6 89. Nd4 Kg5 90. Ne2 Kg6 91. Ng3 Kg5 92. Ne4+ Kg6 93. Nc5 Kg5 94. Nd7 Kg6 95. Ke8 Bf7+ 96. Kd8 Be6 97. Ke7 Bg8 98. Kf8 Be6 99. Ke8 Bxd7+ 100. Ke7 Be8 101. Kxe8 Kxf6 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.15"]
[Round "6.3"]
[White "Galperin, Platon"]
[Black "Sturua, Zurab"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2460"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,45,14,0,0,0,-2,0,-6,-24,-17,-24,0,0,0,0,0,0,0,0,0,0,0,0,0,-9,0,-6]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5 11. Ne1 Re8 {D41: Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5} (11... Bg4 12. h3 Bf5 13. Nd3 Bb6 14. Nf4 d4 15. g4 Bg6 16. Qb3 Re8 17. Bd2 Be4 18. Rfe1 Qd7 19. Rac1 {½-½ (42) Webersberger,J (2356)-Schlosser,P (2571) Austria 2016}) 12. Nd3 Bb6 13. Nf4 d4 14. b3 Bg4 15. Re1 Qd7 $146 ({Predecessor:} 15... d3 16. Nxd3 Nd4 17. Be3 Rxe3 18. fxe3 Nf5 19. Nf2 Qg5 20. Kh1 Rd8 21. Qb1 Nxe3 22. Nxg4 Nxg4 23. Bf3 Nxh2 24. Kxh2 Bf2 25. Rg1 Rd6 {0-1 (25) Meduna,E (2390)-Varnusz,E (2410) Hungary 1978}) 16. h3 {The position is equal.} Bf5 17. e4 dxe3 18. Bxe3 Bxe3 19. Rxe3 Rxe3 20. Qxd7 Bxd7 21. fxe3 Rd8 22. Rd1 Be8 23. Rxd8 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.16"]
[Round "6.4"]
[White "Shahinyan, David"]
[Black "Levin, Evgeny A."]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2444"]
[BlackElo "2527"]
[Annotator "RC"]
[PlyCount "81"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. g3 g6 2. Bg2 Bg7 3. c4 d6 4. Nc3 Nf6 5. e4 c5 6. d3 Nc6 7. Nge2 O-O 8. O-O a6 9. h3 Rb8 10. a4 Nd7 11. Be3 Nd4 12. f4 b6 13. Rb1 e6 14. b4 Bb7 15. Bf2 Ba8 16. g4 Bc6 17. Nxd4 cxd4 18. Ne2 e5 19. f5 Bf6 20. Ra1 a5 21. b5 Bb7 22. Bg3 Bh4 23. Qe1 Bxg3 24. Qxg3 g5 25. Kf2 Kg7 26. Rh1 Nc5 27. Qf3 Nd7 28. Ng3 Nf6 29. Rh2 Rh8 30. Rah1 Qc7 31. h4 h5 32. hxg5 Nxg4+ 33. Kg1 Nxh2 34. f6+ Kf8 35. Rxh2 Bc8 36. Rxh5 Rg8 37. Rh7 Be6 38. Qh5 Ke8 39. Nf5 Bxf5 40. exf5 e4 41. g6 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.16"]
[Round "6.5"]
[White "Davtyan, Artur"]
[Black "Matviishen, Viktor"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2437"]
[BlackElo "2497"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,82,1,8,14,0,0,0,18,0,0,0,2,-2,-1,-9,-2,-21,0,2,7,14,7,6,8,8,10,-35,-37,-38,-45,-45,-45,-45,0,-68,-85,-86,-84,-97,-95,-427,-426,-530,-517,-433,-89,-312,-334,-338,-319,-330,-329,-338,-327,-336,-333,-852,-838,-5121,-4192,-4890,-2988]} 1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. a4 Nf6 5. e3 e6 6. Bxc4 c5 7. O-O Nc6 8. Nc3 Be7 9. Qe2 cxd4 10. Rd1 O-O 11. exd4 Nb4 12. Bg5 h6 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4} (12... Bd7 13. d5 exd5 14. Nxd5 Nbxd5 15. Bxd5 Nxd5 16. Rxd5 Bxg5 17. Nxg5 h6 18. Qd2 hxg5 19. Rxd7 Qb6 20. a5 Qb3 {½-½ (32) Heberla,B (2550)-Zaitsev,M (2467) Germany 2019}) 13. Bh4 Bd7 14. Ne5 Be8 {The position is equal.} 15. Rac1 Rc8 $146 ({Predecessor:} 15... Nfd5 16. Bg3 Bg5 17. Ra1 Rc8 18. Ne4 Be7 19. h3 b5 20. axb5 Bxb5 21. Bxb5 {½-½ (34) Kretchetov,A (2340)-Bodek,M (2191) Los Angeles 2011}) 16. Bb3 a5 17. Bc4 Nfd5 18. Bg3 Bg5 19. Ra1 Nxc3 20. bxc3 Nd5 21. Qd3 h5 22. h3 h4 $36 {[%mdl 2048] Black fights for an advantage.} 23. Bh2 Bf4 24. Bxf4 Nxf4 25. Qf3 Qg5 26. Bf1 f6 27. Nd3 Nd5 {Hoping for ...Bh5.} 28. Re1 (28. Rdc1 $1 $11) 28... Rxc3 $15 29. Qe4 Bf7 30. Nc5 Nf4 31. Kh1 $2 {[%mdl 8192]} (31. Re3 $17 Rxe3 32. Qxe3) 31... e5 $19 {aiming for ...Bd5.} 32. Qb1 {Threatens to win with Ne4.} Bd5 33. Ne4 {[#]} Rxh3+ {Played: Qg5-f5} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "7.1"]
[White "Matviishen, Viktor"]
[Black "Sargsyan, Anna M."]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2497"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,116,20,12,16,20,14,10,12,6,7,-4,11,-8,-9,-4,-2,-35,-35,-41,-29,-18,-20,-69,-72,-81,-79,-133,-134,-133,-132,-190,-190,-174,-192,-187,-181,-217,-149,-162,-47,-45,-12,-58,-49,-108,-51,-151,-141,-113,-26,-4,0,-285,-285,-285,-287,-533,-514,-511,-506,-524,-521,-486,-465,-416,-340,-431,-443,-441,-416,-445,-442,-439,-425,-561,-568,-568,-545,-520,-424,-562,-561,-524,-504,-570,-578,-680,-667,-698,-687,-664,-604,-724,-711,-697,-660,-1108,-1091,-2302,-2163,-3046,-2831,-2299,-2279,-12839,-8076]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 {Nowadays more popular than 6...Be7.} 7. Nc3 d6 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 8. Nd5 h6 9. Nxf6+ Qxf6 {The position is equal.} 10. Bd5 Bd7 11. c3 O-O 12. O-O Rab8 13. Be3 Bb6 {[#]} 14. b4 $146 ({Predecessor:} 14. d4 Rfd8 15. a4 exd4 16. cxd4 Nb4 17. a5 Nxd5 18. exd5 Ba7 19. Rc1 Rb7 20. b4 {0-1 (35) Supriya,J (1829)-Akshaya,A (1966) Chennai 2011}) 14... a5 15. a4 axb4 16. Bxc6 Bxc6 17. a5 {[#]} Bxa5 $1 {[%mdl 512]} 18. Rxa5 bxc3 19. Qb3 (19. Qb1 $142 b4 20. Rc1) 19... b4 $17 {[%mdl 1024] Black has strong compensation.} 20. Qc4 Bd7 21. Ba7 (21. d4 $17) 21... Rb7 $19 22. Qa6 Bc8 23. Qc6 Qe7 24. d4 Qd7 25. d5 Qg4 (25... Qxc6 $1 $19 26. dxc6 Rxa7 $1 {[%mdl 512]} 27. Rxa7 b3) 26. Re1 $15 f5 27. h3 Qh5 $1 28. Nh2 (28. Nxe5 $15 dxe5 29. Bc5) 28... fxe4 (28... Qg6 $17 29. Kh1 Qh5) 29. Be3 {[#]} (29. Nf1 $1 $15) 29... Qe8 $1 $36 {[%cal Re8c6][%mdl 2048] aiming for ...Qxc6. Black is in control.} 30. Qc4 {[#]} Bd7 {Played: Qe8-f7} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "7.2"]
[White "Levin, Evgeny A."]
[Black "Davtyan, Artur"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2527"]
[BlackElo "2437"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,98,0,0,0,0,0,18,0,0,0,0,0,0,0,-8,-37,-31,-22,-13,-14,0,0,0,-16,-19,-13,0,0,0,0,0,0,0,0,0,0,0,-18,-15,-17,-16,-17,-16,-17,-16,-26,-17,-18,-16,-17,-9,-8,0,-31,-16,-16,-18,-16,-16,-16,-30,-31,-16,-114,-114,-119,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Be2 b6 9. O-O Bb7 10. Bb2 Qe7 11. Rfe1 {D45: Semi-Slav: 5 e3} (11. Rad1 Rad8 12. Rfe1 Rfe8 13. Bf1 c5 14. cxd5 exd5 15. g3 Rc8 16. Qb1 cxd4 17. Nxd4 Bb4 18. Qa1 Ne5 19. Bg2 Qd7 20. a3 Bc5 21. Nce2 Ne4 22. Nf4 {½-½ (22) So,W (2760)-Giri,A (2776) Kolkata 2019}) 11... Rfd8 12. Rad1 Nf8 13. e4 $146 ({Predecessor:} 13. Bd3 dxc4 14. bxc4 c5 {1-0 (61) Santos Latasa,J (2549)-Sargsyan,A (2188) Batumi 2018}) 13... dxe4 14. Nxe4 Nxe4 15. Qxe4 c5 16. Qg4 {[#] And now dxc5 would win.} cxd4 17. Rxd4 (17. Bxd4 $5 {[%cal Rg4g7]} f6 18. Bc3 $11) 17... Ng6 18. Red1 e5 19. R4d2 f6 20. Nh4 Nxh4 21. Qxh4 Bb4 22. Rd3 e4 23. Rxd8+ Rxd8 24. Rxd8+ Qxd8 25. Qf4 Bd6 26. Qf5 Bc5 {Threatens to win with ...Qd2.} 27. Qe6+ Kf8 {Hoping for ...Qd2!} 28. Bc3 Qe7 29. Qxe7+ Kxe7 $11 {[%mdl 4096] Endgame KBB-KBB} 30. b4 Bd6 31. a3 Ke6 32. Bd4 Be5 33. Be3 $1 Bb2 34. a4 Ba3 35. Bd2 Bb2 36. Be3 Bc3 37. c5 Bxb4 38. Bc4+ Ke5 39. cxb6 a5 40. Kf1 Kd6 41. Bb5 {[#]} (41. Bg8 $11 {remains equal.}) 41... Bc5 $1 $17 42. Bf4+ Kd5 (42... Ke7 $17 43. Bc7 Bd6 44. Bxd6+ Kxd6) 43. Bc7 $11 {The position is equal.} Bd6 44. Bd8 Kc5 ({Don't blunder} 44... Bxh2 $2 45. g3 $18) 45. g3 Be5 46. Ke2 g5 47. h3 h6 48. g4 Bd4 49. Bc7 Kb4 {Accuracy: White = 76%, Black = 52%.} 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "7.3"]
[White "Sturua, Zurab"]
[Black "Shahinyan, David"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2530"]
[BlackElo "2444"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,89,40,37,26,31,27,21,28,29,42,33,36,24,26,22,29,10,87,65,67,77,77,60,50,47,198,177,187,200,179,168,187,191,221,137,136,62,66,65,64,61,46,52,51,16,17,14,16,15,20,19,19,20,20,19,20,8,8,8,6,8,9,8,331,283,301,300,287,244,464,460,1291,1289,1099,1069]} 1. c4 b6 2. Nf3 e6 3. g3 Bb7 4. Bg2 f5 5. O-O Nf6 6. d3 Be7 7. b3 O-O 8. Bb2 a5 9. a3 Na6 {[%cal Bb8a6,Ba6c5,Bc5b3][%mdl 32] A10: English Opening: Unusual Replies for Black} 10. Nbd2 Qe8 11. Bc3 (11. Re1 Qh5 12. Nf1 Rae8 13. Bc3 Ba8 14. Qb1 c5 15. Ra2 d5 16. cxd5 exd5 17. d4 {1-0 (40) Fodor,T (2476)-Bawart,M (2417) Austria 2011}) 11... Qh5 {The position is equal.} 12. e3 $146 ({Predecessor:} 12. Qc2 d6 13. d4 Ne4 14. Nxe4 Bxe4 15. Qb2 {1-0 (44) Antonova,N (2004)-De Leon,P (1921) Tromsoe 2014}) 12... Nc5 13. Qc2 a4 14. b4 Nb3 $1 15. Rae1 g5 16. Qd1 Qh6 (16... c5 $11 {keeps the balance.}) 17. Ne5 $16 Bxg2 18. Kxg2 Nxd2 19. Bxd2 Bd6 20. Nf3 $1 e5 $2 ({Better is} 20... Qg6 $14) 21. e4 $18 f4 {[#]} 22. d4 $1 g4 {[#]} 23. Nh4 $1 c6 ({Don't blunder} 23... exd4 $2 24. e5 $18) 24. f3 {Strongly threatening dxe5.} Qg5 25. Nf5 gxf3+ 26. Qxf3 ({White should try} 26. Rxf3 $16 Nxe4 27. Nxd6 Nxd6 28. Rxe5) 26... Nxe4 $1 $14 27. Rxe4 Qxf5 28. dxe5 Bxe5 29. Bxf4 Bg7 30. Bd6 (30. Qe2 {keeps more tension.} Rac8 31. Re1 d5 32. Re7 Rf7 33. Re6) 30... Qxf3+ 31. Rxf3 Rxf3 32. Kxf3 $11 {[%mdl 4096] Endgame KRB-KRB} b5 33. cxb5 cxb5 34. Be5 Bh6 35. Rd4 Bc1 36. Rxd7 {Black must now prevent Rg7+.} Bxa3 37. Rg7+ Kf8 38. Rxh7 Ra6 $1 39. Rb7 Bc1 $2 {[%mdl 8192]} (39... Bxb4 $11 40. Rxb5 Be7) 40. Rxb5 $18 a3 {Hoping for ...Bb2.} 41. Ra5 Re6 42. Bd4 Ke7 $2 (42... Bb2 {might work better.} 43. Bc5+ Ke8) 43. b5 {[%cal Bb4b5,Bb5b6][%mdl 32] aiming for b6.White is clearly winning.} Kd7 (43... Bb2 $142 44. Bc5+ {[%mdl 64] Double Attack} Kd7 45. Bxa3 Bxa3 46. Rxa3 Rf6+ 47. Ke4 Re6+ 48. Kf5 Rb6) 44. b6 Re8 45. Rd5+ {Accuracy: White = 72%, Black = 54%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "7.4"]
[White "Pogosyan, Stefan"]
[Black "Galperin, Platon"]
[Result "1/2-1/2"]
[ECO "A84"]
[WhiteElo "2477"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,115,9,12,13,0,0,0,-7,0,-5,-6,-25,0,0,0,0,0,0,0,0,0,-10,0,0,-5,-17,-17,-19,-13,-16,-10,-22,-22,-25,-30,-33,-25,-27,-18,-18,-12,-15,-24,-25,-16,-31,-39,-18,0,0,0,0,0,0,0,-7,0,0,0,0,25,0,0,0,0,-62,-62,-67,-60,-145,-152,-134,-121,-111,0,-143,-135,-380,-381,-679,-677,-470,-8,-8,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0]} 1. Nf3 f5 2. d4 Nf6 3. c4 g6 4. b4 (4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. c5 Kh8 11. Qb3 h6 12. Rd1 g5 13. a4 a6 14. a5 Qe8 15. d6 exd6 16. cxd6 cxd6 17. Rxd6 Qh5 18. Nd5 Ne4 19. Bf3 Qf7 20. Bxe4 fxe4 {1-0 (31) Navara,D (2703)-Vitiugov,N (2751) Hamburg 2019}) 4... e5 5. Nxe5 Bxb4+ 6. Bd2 {A84: Dutch Defence: 2 c4 Miscellaneous} Bxd2+ 7. Nxd2 Qe7 $146 ({Predecessor:} 7... d6 8. Nd3 Nc6 9. e3 Qe7 10. Be2 Ne4 11. Nxe4 fxe4 {1-0 (31) Levin,F (2520)-Van der Elburg,F (2228) Dieren 2003}) 8. e3 f4 9. exf4 Nc6 10. d5 Nxe5 (10... Nd4 {seems wilder.} 11. Be2 O-O 12. Nef3 Nxf3+ 13. Nxf3 Ne4) 11. fxe5 Qxe5+ 12. Be2 O-O 13. O-O d6 14. Nf3 Qf4 15. Qd4 Qxd4 16. Nxd4 Ne4 17. f4 Bd7 18. Bd3 Nc5 19. Bc2 Rae8 20. g3 Re3 21. Rf3 Rfe8 22. Kf2 R3e7 23. f5 gxf5 24. Bxf5 Ne4+ 25. Kg2 Nd2 26. Bxd7 Rxd7 27. Rc3 Re4 28. Ne6 Rf7 ({Don't go for} 28... Nxc4 $2 29. Rf1 $18) 29. c5 dxc5 30. Rxc5 Re2+ 31. Kh3 Nf3 32. Rh1 h6 33. Rxc7 Rxc7 34. Nxc7 $11 {[%mdl 4096] Endgame KRN-KRN} h5 35. Ne6 Rxa2 36. g4 Rd2 37. Rf1 ({White should try} 37. Ra1 $11) 37... hxg4+ $15 38. Kg3 Rxd5 39. h3 ({White should play} 39. Ra1 $15) 39... Rd3 $17 {White must now prevent ...Nd2+.} 40. Nc5 Rc3 41. Ne4 Rd3 {Threatens to win with ...Nd2+.} 42. Nc5 $1 {[%cal Rc5d3]} Ra3 43. Rd1 $2 (43. Kf4 $17 {was the only defense.}) 43... b6 $19 44. Rd3 $2 {[#]} (44. Rd8+ Kf7 45. Nb7) 44... Rxd3 $1 45. Nxd3 {[#] KN-KN} Nd4 $2 (45... gxh3 $1 $19 46. Kxf3 Kf7) 46. hxg4 $11 {The position is equal.} Ne6 {White should prevent ...a5.} 47. Kf3 Nc5 48. Ne5 a5 49. Nc4 a4 50. Na3 Kf7 {Strongly threatening ...Ke6.} 51. Ke3 Ke6 52. Kd4 Nb7 53. Kc4 Nd6+ 54. Kb4 {[#]} b5 $1 {[%mdl 512]} 55. g5 (55. Nxb5 Nxb5) 55... Kf5 56. g6 {Hoping for g7.} Kxg6 57. Nxb5 {[#]} a3 $1 {[%mdl 512]} 58. Nxa3 {Accuracy: White = 65%, Black = 64%.} (58. Kxa3 Nxb5+) 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "7.5"]
[White "Hayrapetyan, Hovik"]
[Black "Barseghyan, Armen Ar."]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2458"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,125,32,24,36,0,20,4,19,19,14,10,10,9,23,0,113,31,37,48,41,2,11,-33,-37,-44,-45,-41,-38,-93,-96,-96,-44,-100,-71,-76,378,361,387,384,525,492,488,373,500,421,570,539,643,637,635,639,617,637,633,632,616,576,671,667,697,352,343,329,497,485,497,497,497,497,497,495,457,429,721,698,634,533,594,445,867,564,1029,1038,939,631,919,842,754,712,1372,871,5847,1920,12832,12832,12831,12834,12838,12835,12837,12837,12837,12839,12839,12837,12837,0,12839,12839,12841,12841]} 1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nf3 d6 7. O-O c6 8. Re1 Na6 9. b3 Qc7 {A88: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 c6} 10. Bb2 (10. Ba3 Qa5 11. Bb2 f4 12. Qd2 fxg3 13. hxg3 Ng4 14. d5 cxd5 15. Qxd5+ Qxd5 16. cxd5 Bd7 17. Rab1 {0-1 (39) Pashikian,A (2599)-Dubov,D (2699) Batumi 2019}) 10... e5 11. e4 fxe4 {The position is equal.} 12. dxe5 exf3 $146 ({Predecessor:} 12... dxe5 13. Nxe4 Bg4 14. Qe2 Nxe4 15. Qxe4 Bxf3 16. Bxf3 Rad8 17. Bg4 Nc5 18. Bxe5 {1-0 (29) Cvitan,O (2499)-Kovacevic,B (2480) Porec 2016}) 13. exf6 Bxf6 14. Bxf3 Bf5 15. Qd2 Nc5 (15... Qg7 $11) 16. Re3 (16. g4 $1 $16 {[%cal Rg4f5]} Be6 17. b4) 16... Qg7 17. Rae1 ({Much worse is} 17. Qxd6 Nd3 $17) 17... Rad8 18. b4 Nd7 $1 19. Bg2 Nb6 $36 {[%mdl 2048] Black has some pressure.} 20. Bf1 d5 21. cxd5 cxd5 22. Nd1 {[#]} (22. Ba1 $15) 22... d4 $1 $17 {[%cal Rd4e3]} 23. Ra3 Rc8 24. Qf4 ({White should play} 24. Rxa7 $15 Nc4 25. Qf4) 24... Nd5 25. Qf3 {[#]} Nxb4 $2 {[%mdl 8192]} (25... Qf7 $1 $17 {and life is bright.} 26. Rxa7 Rfe8 27. Rxe8+ Rxe8) 26. Qb3+ $18 {[%mdl 64] Double Attack} Rf7 27. Qxb4 Be7 {[#]} 28. Rxe7 $1 Rxe7 29. Bxd4 {[%mdl 64] Double Attack} Qf7 30. Rc3 Rxc3 31. Bxc3 Rd7 32. Ne3 Be6 33. Ng4 Bxg4 34. Qxg4 {Hoping for Bc4!} h5 35. Qa4 {Bc4! is the strong threat.} Kh7 36. Qxa7 Rd1 37. Qe3 Qc7 38. Qe5 Qxe5 39. Bxe5 Re1 (39... g5 {was called for.} 40. Kg2 Kg6) 40. f4 Rd1 41. a3 Rd2 42. h3 Ra2 43. Bd6 Rd2 44. Bb4 Rc2 (44... Rd4 $142 45. h4 Rd1) 45. Bd3 Ra2 46. Kf1 Kg7 47. Be2 Kf6 (47... Ra1+ $142 48. Kf2 Rb1) 48. Kf2 g5 49. fxg5+ Kxg5 50. Ke3 Rb2 51. Be7+ Kg6 52. g4 hxg4 53. hxg4 Kf7 54. Bb4 Kg6 55. Bd3+ Kg5 56. Bf5 Ra2 57. Kd4 Re2 58. Kc5 Re7 59. Kb6 Rf7 60. Bd2+ Kh4 61. Bb4 $2 (61. Bf4 $18 Re7 62. Bd6) 61... Rg7 $2 {[%mdl 8192]} (61... Kg5 $11 62. a4 Kf6 63. Bc3+ Ke7 64. Kxb7 Kd6+ 65. Kb6 Kd5) 62. a4 Kg3 63. Bd6+ {Accuracy: White = 71%, Black = 23%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "8.1"]
[White "Sargsyan, Anna M."]
[Black "Barseghyan, Armen Ar."]
[Result "0-1"]
[ECO "A67"]
[WhiteElo "2382"]
[BlackElo "2408"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,72,0,25,0,7,0,0,-32,23,10,38,0,0,7,9,0,0,-147,-154,-243,-254,-252,-224,-237,-227,-241,-243,-345,-335,-335,-333,-354,-521,-510,-517,-510,-512,-488,-472,-578,-573,-580,-483,-579,-573,-564,-548,-922,-894,-1400,-1324,-1102,-544]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Nf3 a6 10. Bd3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 11. O-O O-O 12. Re1 {A67: Modern Benoni: Taimanov Variation} (12. a3 Nf6 13. f5 Re8 14. Kh1 Nbd7 15. Bf4 Ng4 16. Bxd6 Ne3 17. Qd2 Nxf1 18. Rxf1 c4 19. Bc2 Ne5 20. Bxe5 Bxe5 21. Nxe5 Rxe5 {½-½ (38) Adhiban,B (2654)-Sek,K (2446) Moscow 2019}) 12... Re8 13. Bc2 b4 14. Ne2 $146 {The position is equal.} ({Predecessor:} 14. Na4 Nf6 15. h3 Bb7 16. Nd2 Nbd7 17. Nc4 {0-1 (24) Van Kanten,B-Spook,M Haarlem 2013}) 14... Nf6 ({Better is} 14... a5 $15) 15. Ng3 $11 Bg4 16. Be3 Nbd7 17. h3 Bxf3 18. Qxf3 Nb6 19. b3 {[#]} (19. Rac1 $11) 19... Nfxd5 $1 $17 {[%mdl 512]} 20. Bf2 (20. exd5 $17 {was worth a try.} Rxe3 21. Rxe3 Bxa1 22. Ne2) 20... Bxa1 $19 21. Rxa1 Qf6 22. Rf1 Nc3 ({Resist} 22... Nxf4 23. Be3 $17) ({Less strong is} 22... Qxf4 23. exd5 Qxf3 24. gxf3 $15) 23. Qg4 {White hopes to continue with Nh5.} Qg7 24. e5 (24. h4 $142) 24... dxe5 25. f5 Nbd5 {[%cal Bb6d5,Bd5f6,Bf6e4][%mdl 32]} 26. Qh4 e4 {White must now prevent ...g5.} 27. fxg6 {Black is clearly winning.} hxg6 28. Nxe4 {[#]} Rxe4 $1 29. Bxe4 {[#]} g5 $1 {[%cal Rg5h4]} 30. Qg4 Nf6 {[%mdl 64] Double Attack} 31. Bh7+ Kxh7 32. Qf3 Nfe4 33. Bxc5 a5 34. a3 Nxc5 35. Qf5+ Kg8 36. Qxc5 Qd4+ {Accuracy: White = 20%, Black = 67%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "8.2"]
[White "Galperin, Platon"]
[Black "Hayrapetyan, Hovik"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2460"]
[BlackElo "2458"]
[Annotator "ChessBase"]
[PlyCount "78"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. e5 dxe5 5. Nxe5 Nbd7 6. d4 e6 7. Bf4 Be7 8. g3 O-O 9. Bg2 cxd4 10. Qxd4 Nh5 11. O-O-O Nxf4 12. gxf4 Nf6 13. Qxd8 Bxd8 14. Nb5 Bb6 15. Rd2 Rb8 16. Bf3 Nd5 17. Bxd5 exd5 18. Nd6 Bc5 19. Nxc8 Rbxc8 20. Rhd1 Rfe8 21. Rxd5 Bxf2 22. Ng4 Bb6 23. c3 f6 24. h3 Rc4 25. f5 Rf4 26. Kc2 h5 27. Nh2 Re2+ 28. R1d2 Rxd2+ 29. Rxd2 Rxf5 30. b4 Bc7 31. a4 g5 32. a5 Kf8 33. c4 Ke7 34. c5 a6 35. Kb3 Be5 36. Kc4 Ke6 37. b5 Rf4+ 38. Kb3 axb5 39. Rd3 g4 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "8.3"]
[White "Shahinyan, David"]
[Black "Pogosyan, Stefan"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2444"]
[BlackElo "2477"]
[Annotator "RC"]
[PlyCount "71"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6 6. a3 Bxc3+ 7. bxc3 b6 8. g3 Ne7 9. Bg2 h6 10. O-O Bg4 11. h3 Be6 12. Nh4 Qd7 13. Nf5 Bxf5 14. exf5 Rd8 15. g4 d5 16. cxd5 Nexd5 17. c4 Ne7 18. Bb2 Nc6 19. f4 exf4 20. Qe2+ Kf8 21. Rxf4 Kg8 22. Qf2 Kh7 23. Qh4 Kg8 24. Qf2 Kh7 25. h4 Rhe8 26. g5 Nh5 27. g6+ fxg6 28. fxg6+ Kxg6 29. Bxc6 Qxc6 30. Rg4+ Kh7 31. Qf5+ Kg8 32. Qxh5 Re7 33. Rf1 Qe6 34. Re4 Qh3 35. Rf3 Qd7 36. Rg3 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "8.4"]
[White "Davtyan, Artur"]
[Black "Sturua, Zurab"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2437"]
[BlackElo "2530"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,127,12,14,12,4,17,5,20,25,20,14,13,5,55,58,88,96,89,49,83,74,64,49,49,55,60,52,50,50,68,68,68,68,63,61,67,69,67,56,59,56,71,46,64,66,66,44,43,42,66,54,63,63,92,77,90,25,58,58,63,59,59,57,91,77,92,97,150,115,117,135,195,178,181,194,287,291,258,280,247,219,213,201,229,215,211,204,268,254,512,512,947,944,1131,1108,1022,981,882,491,483,458,1495,475,571,569,729,692,691,691,860,785]} 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. Nxc4 (11. Bxc6 bxc6 12. Be3 Bb6 13. Bxb6 axb6 14. Nc3 Bd7 15. Rfd1 Ra7 16. Rd6 Rc8 17. Nxc4 Be8 18. Nxb6 {½-½ (31) Ponomariov,R (2648)-Dominguez Perez,L (2762) Budva 2019}) 11... Rd8 12. Be3 Be7 $146 {The position is equal.} ({Predecessor:} 12... Bb4 13. Nc3 Bxc3 14. Rfd1 Bxb2 15. Rxd8+ Nxd8 16. Nxb2 Bd7 17. Rd1 Bc6 18. f3 {½-½ (41) Biardi,G (1733)-Makeev,A (1915) Chessfriend.com 2005}) 13. Bxc6 bxc6 14. Ne5 Bb7 15. Rc1 Rdc8 (15... Rac8 {seems wilder.} 16. Bxa7 c5 17. Nc3 Nd5 18. Nb5 Ba6) 16. Bc5 Nd5 17. Bxe7 Nxe7 18. Ne3 Rd8 19. Rfd1 Rxd1+ 20. Rxd1 Nd5 21. N3c4 f6 22. Nd7 Ba6 23. Rc1 e5 24. Nc5 Bxc4 25. Rxc4 $14 {[%mdl 4096] Endgame KRN-KRN} Nb6 26. Rc2 Rd8 27. Nd3 Rc8 28. b4 Kf8 29. f3 Ke7 30. Kf2 Kd6 31. Nc5 Ke7 32. Nb3 Nd7 33. e4 Nb8 34. Na5 Kd7 35. Ke3 Kc7 36. h4 Rd8 37. Nb3 (37. f4 $16) 37... Kb6 38. Nc5 Rd1 39. Rc3 Re1+ 40. Kf2 Ra1 41. a3 $1 Ra2+ 42. Ke3 h5 ({Better is} 42... a5) 43. Ne6 g6 {[#]} 44. f4 $1 Na6 (44... a5 $16) 45. fxe5 fxe5 46. Nf8 Nc7 (46... Kc7 $142 47. b5 (47. Nxg6 Kd6 $16) 47... Nb8) 47. Nd7+ $18 ({Not} 47. Nxg6 Nb5 $16) 47... Kb7 {intending ...Nb5.} 48. Nxe5 Nb5 49. Rxc6 Rxa3+ 50. Kf4 Nd4 51. Rxg6 Ne2+ 52. Kg5 {And now g4 would win.} Nxg3 {[#]} 53. Nc4 $1 {[%cal Rc4a3]} Rd3 $2 (53... Ra4 {keeps fighting.} 54. Kf4 Nh1 55. Rg7+ Ka6) 54. e5 {White is clearly winning.} Kc7 (54... Rd5 $142 55. Nd6+ Kc7 56. Rg7+ Kc6 57. b5+ Kb6) 55. Rg7+ Kc6 56. e6 Rd5+ 57. Kf6 Ne4+ 58. Kf7 Rf5+ 59. Ke7 Rf4 (59... Rb5 $142 60. Na5+ Kb6) 60. Rg6 (60. Rf7 $142 Rxh4 61. Rf5) 60... Kd5 61. Na5 Rxh4 62. Kd7 {Hoping for e7.} Rg4 63. Rh6 Ke5 {aiming for ...Nf6+.} 64. Nc6+ {Accuracy: White = 71%, Black = 29%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.17"]
[Round "8.5"]
[White "Matviishen, Viktor"]
[Black "Levin, Evgeny A."]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2497"]
[BlackElo "2527"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,41,0,16,8,11,8,19,19,17,8,26,27,39,29,36,0,0,0,18,22,19,0,0,0,0,0,0,0,0,-13]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 d5 8. Ne5 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations} (8. cxd5 exd5 9. Nc3 O-O 10. O-O Re8 11. Re1 Bb7 12. Qc2 Na6 13. Rac1 c5 14. Red1 Ne4 15. Be1 Qc8 16. dxc5 Nxc3 17. Bxc3 bxc5 18. Qb2 Bf8 {½-½ (32) Abasov,N (2623)-Jakovenko,D (2749) Ankara 2018}) 8... Bb7 9. Nc3 Nbd7 10. O-O O-O 11. Rc1 c5 12. Bf4 cxd4 13. Qxd4 {[%cal Rc4d5]} Bc5 14. Qd2 Nxe5 {The position is equal.} 15. Bxe5 Ne4 $146 ({Predecessor:} 15... Ng4 16. Qf4 Nxe5 17. Qxe5 Re8 18. Rfd1 Rc8 19. cxd5 exd5 {½-½ (34) Soreghy,J-Krueger,H LSS email 2007}) 16. Nxe4 dxe4 17. Qf4 f6 18. Bc3 Bd6 19. Qe3 Bc5 20. Qf4 Bd6 21. Qe3 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "9.1"]
[White "Levin, Evgeny A."]
[Black "Sargsyan, Anna M."]
[Result "1/2-1/2"]
[ECO "D17"]
[WhiteElo "2527"]
[BlackElo "2382"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,93,16,25,28,33,32,31,29,26,37,32,33,21,26,32,32,21,29,27,28,23,58,64,59,58,62,0,0,-69,-69,-69,-69,-69,-69,-69,-68,-84,-85,-83,-50,-50,-43,-71,-68,-68,-66,-71,-71,-95,-69,-69,-69,-91,-59,-55,-56,-77,-48,-66,-18,-18,-18,-17,-8,-10,-9,-8,8,8,8,8,8,8,8,8]} 1. d4 d5 2. c4 c6 3. Nf3 ({Predecessor:} 3. Nc3 Nf6 {½-½ (35) Marquez Abreu,C (2405)-Ruggieri,O (2410) ICCF email 2016}) 3... Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 g5 {D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5} 12. Ne3 gxf4 13. Nxf5 O-O-O {White is slightly better.} 14. Qc2 ({Much worse is} 14. gxf4 Nc5 $15) 14... Nc5 15. O-O ({Of course not} 15. gxf4 Nc4 $15) 15... fxg3 16. hxg3 a5 17. Rfd1 $146 (17. Rad1 h5 18. Rxd8+ Qxd8 19. Rd1 {0-1 (57) Riazantsev,A (2639)-Mamedov,R (2659) Moscow 2019}) 17... h5 18. Rxd8+ Qxd8 19. Rb1 Ne6 20. Na2 Bc5 {With the idea ...h4!} 21. b4 axb4 22. Nxb4 h4 23. Qe4 ({White should play} 23. Qb2 $1 $14 Nc4 {[#]} 24. Nxc6 $1 {[%mdl 512]} Nxb2 25. Nxd8 {[%mdl 64] Discovered Attack} Rxd8 26. Rxb2) 23... Qf6 $11 {Strongly threatening ...hxg3.} 24. gxh4 {[#]} ({Better is} 24. a5 $1 $11) 24... Bxf2+ $1 $15 {[%mdl 512]} 25. Kxf2 {Threatens to win with Ke1.} Rxh4 $1 {[%mdl 64] Pin} 26. Nd5 Rxe4 27. Nxf6 Rf4+ {[%mdl 64] Double Attack} 28. Kg3 {Hoping for e4.} Rxf5 29. Ne4 {Nd6+ is the strong threat.} Rh5 30. Bh3 Nc4 31. Rb4 b5 32. axb5 cxb5 33. Bg4 Re5 34. Bf3 Kd7 35. Nf6+ Kd6 36. Ne4+ Ke7 37. Nc3 Nd6 38. Nd5+ Kf8 39. e4 Ng5 40. Kf4 {The position is equal.} Nxf3 41. Kxf3 $11 {[%mdl 4096] Endgame KRN-KRN} Kg7 42. Kf4 f6 43. Rd4 Rxe4+ 44. Rxe4 Nxe4 45. Kxe4 f5+ 46. Kxf5 b4 47. Nxb4 {Accuracy: White = 69%, Black = 62%.} 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "9.2"]
[White "Sturua, Zurab"]
[Black "Matviishen, Viktor"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2530"]
[BlackElo "2497"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,27,36,45,58,48,45,9,10,2,4,-17,-25,-22,-13,-24,-15,-49,-39,-43,-30,-37,-22,-18,-18,-30,-35,-39,-33,-72,-62,-92,-98,-88,-62,-63,0,5,29,21,0,12,12,14,20,0,0,0,0,0,0,0,18,0,0,0,114,132,192,60,61,61,427,407,604,539,704,564,704,693]} 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Nbd2 (4. Bg2 Bf5 5. O-O e6 6. Ne5 c6 7. c4 f6 8. cxd5 fxe5 9. dxc6 e4 10. cxb7 Rb8 11. Nc3 {0-1 (89) Karjakin,S (2760)-Alekseenko,K (2674) Douglas 2019}) 4... Nf6 $146 ({Predecessor:} 4... Bf5 5. Nh4 e6 6. Nxf5 exf5 7. Bg2 Nf6 8. e3 c6 9. b3 Be7 10. c4 O-O 11. O-O {0-1 (30) Blohberger,F (2434)-Bluebaum,M (2644) Moscow 2019}) 5. b3 e6 6. Bb2 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} a5 7. a4 Ne4 8. e3 {White is slightly better.} Bb4 9. Qc1 Nc3 10. Bd3 c5 11. O-O c4 $1 {[%cal Rc4d3]} 12. bxc4 dxc4 13. Nxc4 {Hoping for Bxc3.} Nbxa4 14. Ba3 b5 15. Bxb4 axb4 16. Ncd2 Bb7 17. Re1 O-O 18. Bf1 f6 19. Bg2 {[#]} e5 $1 {[%mdl 512]} 20. Nb3 (20. dxe5 fxe5) 20... e4 21. Nfd2 Qe7 22. Nb1 Rac8 (22... Nd5 $15) 23. Nxc3 $11 Rxc3 24. Bf1 Rfc8 25. Bxb5 Rxc2 26. Qb1 Rb2 27. Bxa4 Rxb1 28. Rexb1 Bd5 29. Nc5 f5 30. Rxb4 f4 31. Bb3 Bxb3 32. Rxb3 f3 (32... Qd6 $11) 33. Rb7 $16 Qd6 (33... Qf8 $16) 34. Raa7 (34. Nxe4 Qg6 $11) (34. h4 $1 $18) 34... Kh8 $1 $14 35. h4 $36 {[%mdl 2048] Black is under pressure.} Rg8 $2 {[%mdl 8192]} (35... h6 $1 $14 36. Rd7 (36. Rxg7 Rxc5 37. dxc5 Qd1+ 38. Kh2 Qf1 $11) (36. Nxe4 Qe6 $17) 36... Qb6) 36. Kh2 $18 Qd5 (36... Qc6 $142 37. Rf7 h6) 37. Nd7 {White is clearly winning.} h5 {[#] intending ...Qc4.} 38. Nf6 $1 {[%mdl 576] Double Attack} Qc6 {[#]} (38... gxf6 39. Rh7#) 39. Ra5 $1 {[%mdl 512] Accuracy: White = 63%, Black = 57%.} 1-0

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "9.3"]
[White "Pogosyan, Stefan"]
[Black "Davtyan, Artur"]
[Result "1/2-1/2"]
[ECO "D58"]
[WhiteElo "2477"]
[BlackElo "2437"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,55,9,4,5,25,13,13,13,13,13,13,18,10,13,14,10,12,19,18,13,13,8,10,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 {[%cal Bb7b6,Bb6c5][%mdl 32]} 8. Be2 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. b4 c5 12. bxc5 bxc5 13. Rb1 Bc6 14. O-O Nd7 {[%cal Bb8d7,Bd7c5,Bc5e6][%mdl 32]} 15. Bb5 {D58: Queen's Gambit Declined: Tartakower Defence} Qc8 (15... Qc7 16. Qd2 Rab8 17. Bxc6 Qxc6 18. dxc5 Bxc3 19. Qxc3 Qxc5 20. Qxc5 Nxc5 21. h3 Ne4 22. Rfc1 Rfc8 23. Rxc8+ Rxc8 {½-½ (48) Tomashevsky,E (2718)-Saric,I (2564) Mali Losinj 2019}) 16. Qd3 cxd4 $146 {The position is equal.} ({Predecessor:} 16... Rd8 17. Bxc6 Qxc6 18. Rfc1 Rac8 19. Qb5 cxd4 20. exd4 Nb6 21. Qxc6 Rxc6 22. Nb5 Nc4 23. Nxa7 {½-½ (23) Husemann,A (2067)-Milde,L (1914) LSS email 2012}) 17. Nxd4 Nc5 18. Qd2 Bxd4 19. Qxd4 Ne6 20. Qd2 Rd8 21. Rfc1 Bxb5 22. Nxb5 Qd7 23. Nd4 Rac8 24. Nxe6 fxe6 25. Qd4 Rxc1+ 26. Rxc1 Rc8 27. Rxc8+ Qxc8 28. g3 1/2-1/2

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "9.4"]
[White "Hayrapetyan, Hovik"]
[Black "Shahinyan, David"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2458"]
[BlackElo "2444"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,86,-3,-11,-4,-13,-38,-40,-47,-33,-37,-39,-36,-30,-33,-13,-25,-25,-27,16,15,26,0,14,0,15,0,0,0,20,14,46,6,22,33,29,23,12,8,42,9,41,10,16,15,35,0,0,12,12,33,16,0,0,0,0,-26,-27,-88,-95,-279,-275,-279,-279,-279,-275,-331,-319,-511,-511,-497,-496,-487,-465,-518,-450,-29997,-100]} 1. c4 d6 2. d4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. Nc3 Be6 6. b3 Nd7 7. g3 {A41: 1 d4 d6: Tartakower System and Modern Defence} (7. Bb2 c6 8. e3 f6 9. Bd3 Nh6 10. h3 Kc7 11. O-O-O Nc5 12. Bc2 a5 13. Nge2 a4 14. g4 axb3 15. axb3 {½-½ (56) Lei,T (2480)-Cheparinov,I (2698) Ho Chi Minh City 2017}) 7... c6 8. f4 Ngf6 $146 ({Predecessor:} 8... Bb4 9. Bd2 Ngf6 10. Nf3 exf4 11. gxf4 Re8 12. Ng5 Nc5 13. Nxe6+ Rxe6 14. O-O-O Ke8 {1-0 (65) Filipovic,M (2241)-Biti,O (2261) Pula 1999}) 9. Nf3 {Black is slightly better.} exf4 10. Bxf4 Bb4 11. Bd2 $1 Bf5 12. Nh4 Bg4 13. h3 Be6 14. g4 Bd6 15. O-O-O Kc7 16. Nf3 Rhe8 17. Nd4 Be5 18. Nf3 Bd6 19. Nd4 a6 (19... Be5 $5 {[%cal Re5d4]} 20. Be3 Nf8 $11) 20. Bg2 h6 (20... Be5 $5 {[%cal Re5d4]} 21. Nf3 Bxc3 22. Bxc3 Ne4 23. Ba5+ (23. Bxg7 Nf2 $11 {[%mdl 64] Double Attack}) 23... b6 $11) 21. Kb1 (21. Na4 {with more complications.} Rac8 22. Rhf1 Kb8 23. Kc2 Be5 24. e3) 21... Rad8 22. Na4 {[#] Threatens to win with Nxc6!} Kc8 23. Bc3 Bc7 24. Rhf1 Kb8 25. Rd2 Nf8 26. Rfd1 Bc8 27. Nc5 {And now Nxa6+! would win.} Ka8 28. Nxc6 bxc6 29. Bxc6+ Kb8 {...Rxd2 is the strong threat.} 30. Bxe8 Rxe8 31. b4 Re3 32. Rd3 Rxe2 33. b5 axb5 {aiming for ...Ne6.} 34. cxb5 (34. Bxf6 $1 $11 gxf6 35. cxb5) 34... Ne6 $17 35. Bxf6 $2 (35. Na6+ $17 Bxa6 36. bxa6) 35... Nxc5 $19 ({Not} 35... gxf6 36. Nd7+ Kb7 37. Rf3 $15) 36. Rd5 gxf6 37. Rxc5 {Hoping for Rdc1.} Bb7 38. Rd7 Be4+ 39. Kc1 $2 (39. Ka1 Be5+ 40. Rxe5 fxe5 41. Rxf7) 39... Bf4+ 40. Kd1 Bf3 (40... Rxa2 $2 41. Rc3 $19) 41. Rd8+ Kb7 42. Rd7+ {[#]} Kb6 $1 {( -> ...Rh2+)} 43. Rf5 (43. Rc3 $19 Rd2+ 44. Ke1 Rxd7 45. Rxf3) 43... Rh2+ {[%mdl 64] Discovered Attack. Accuracy: White = 36%, Black = 70%.} 0-1

[Event "10th A Margaryan Memorial 2020"]
[Site "Yerevan"]
[Date "2020.01.18"]
[Round "9.5"]
[White "Barseghyan, Armen Ar."]
[Black "Galperin, Platon"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "2408"]
[BlackElo "2460"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2020.01.09"]
[EventType "tourn"]
[EventCountry "ARM"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,60,22,15,21,33,42,48,6,14,9,42,39,60,25,29,27,29,38,35,0,0,0,0,0,0,0,0,-34,-28,-77,-65,-108,-86,-555,-243,-425,-365,-562,-266,-535,-534,-615,-611,-1027,-1021,-1002,-999,-985,-953]} 1. d4 g6 2. Nf3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. O-O d6 6. Nc3 Nc6 7. d5 Na5 8. Rb1 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} (8. h3 c6 9. e4 Bd7 10. Qe2 cxd5 11. exd5 Rc8 12. Rd1 Re8 13. Nd4 Qb6 14. a4 a6 15. Ra2 h5 {1-0 (48) Bauer,C (2562)-Ivanchuk,V (2719) Neum 2000}) 8... c5 9. b3 $146 ({Predecessor:} 9. a3 Bd7 10. e4 Bg4 11. Qe2 Nd7 12. h3 Bxf3 13. Bxf3 a6 14. Nd1 b5 15. Bg2 c4 {½-½ (62) Belikov,V (2564)-Tukhaev,A (2466) Alushta 2007}) 9... a6 10. a4 {White is slightly better.} Rb8 11. e4 Nd7 12. Bb2 b5 13. Qe2 Ne5 14. Nxe5 Bxe5 15. axb5 axb5 16. Nxb5 Bxb2 17. Rxb2 {Strongly threatening Ra1.} Ba6 18. c4 {Hoping for Ra1.} Bxb5 19. cxb5 {Black must now prevent Ra1.} Qb6 20. Ra1 {[#] Qe1 is the strong threat.} Qxb5 21. Qc2 Nxb3 22. Ra7 c4 {Threatens to win with ...Qc5.} 23. Rxe7 $2 {[%mdl 8192]} (23. Qc3 $17) 23... Qa5 (23... Qc5 $142 24. Qc3 Nd4) 24. Qd1 $2 (24. Bf1 {only move.} Nd4 25. Ra2) 24... c3 $19 25. Rc2 {[#]} (25. Rxb3 $142 Qa4 26. Rxf7 (26. Rb1 $2 c2 $19) 26... Rxb3 27. Rxf8+ Kxf8 28. e5 dxe5 29. Be4) 25... Qc5 (25... Nd4 $142 $1 {[%mdl 512]} 26. Rc1 (26. Qxd4 $2 Rb1+ 27. Bf1 Qa6 $19) 26... Qc5) 26. Qd3 $2 (26. Bf1 {is the only way for White.}) 26... Nd4 {Black is clearly winning.} 27. Rc1 Rb2 {And now ...Ne2+ would win.} 28. Kh1 Ne2 29. Rf1 c2 30. Qxe2 Rb1 {Accuracy: White = 25%, Black = 56%.} 0-1

