[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.1"]
[White "Carvalho, Guillermo"]
[Black "Delgado Ramirez, Neuris"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2187"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,4,11,8,16,17,22,13,37,25,25,5,19,28,20,-18,-8,-30,-38,-34,-34,-43,-28,-47,-57,-64,-21,-20,-23,-58,-33,-56,-50,-51,0,-11,16,-39,-7,-25,27,-126,-115,-128,-151,-175,-178,-355,-344,-499,-246,-466,-117,-110,-111,-110,-109,-103,-95,-233,-229,-1104,-1092,-1256,-1229,-1305,-1326,-1315,-1312]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 c6 4. e3 Bf5 5. f3 h5 6. Bd3 {D00: 1 d4 d5: Unusual lines.} Bxd3 7. Qxd3 e6 8. Nge2 {[#] The position is equal.} Na6 $146 ({Predecessor:} 8... Bd6 9. O-O-O Bxf4 10. Nxf4 g5 11. Nfe2 Nbd7 12. h4 g4 13. e4 gxf3 14. gxf3 dxe4 15. fxe4 {½-½ (93) Darini,P (2511)-Zhang,Z (2645) Doha 2016}) 9. a3 Be7 10. O-O-O Qa5 11. Kb1 b5 12. Na2 c5 13. dxc5 Nxc5 14. Qd2 Qb6 15. Nd4 $1 Ncd7 16. Bg3 O-O 17. Rhe1 Nc5 18. Qe2 a6 19. c3 Rfe8 20. Nc1 Na4 21. Na2 Nc5 (21... Rac8 $15) 22. h3 Bf8 23. Bf2 (23. Bh4 $11) 23... e5 $36 {[%mdl 2048] Black has good play.} 24. Nc2 $1 e4 ({Better is} 24... Qe6) 25. Nd4 $2 (25. Bh4 $11) 25... Nfd7 26. Nb4 {[#]} Qb7 $1 27. f4 a5 28. Nbc2 $2 (28. Qxb5 Qxb5 29. Nxb5) 28... Reb8 $19 29. Rf1 {[#]} ({Much weaker is} 29. Qxh5 Nd3) (29. Rd2 $142 Nd3 30. b3) 29... Nd3 (29... b4 $142 $1 {[%mdl 512]} 30. cxb4 (30. axb4 axb4) 30... axb4 31. Nxb4 Nd3 32. Nxd3 Bxa3) 30. Be1 $2 ({Don't blunder} 30. Qxh5 $2 b4 $19) (30. b4) 30... Nb6 $2 (30... b4 $19 31. cxb4 axb4 32. Rxd3 exd3 33. Qxd3 Nc5) 31. Rxd3 $17 exd3 32. Qxd3 Nc4 33. g4 Qa6 {...b4! is the strong threat.} 34. Qe2 {[#]} (34. Kc1 $17) 34... b4 $1 {[%cal Bb5b4,Bb4b3][%mdl 544] Strongly threatening ...b3.} 35. a4 $2 (35. b3) (35. axb4 axb4) 35... b3 $19 {Black is clearly winning.} 36. Na1 Bc5 37. Rf2 Bxd4 38. exd4 Qc6 {Accuracy: White = 50%, Black = 69%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.2"]
[White "Hernandez Guerrero, Gilberto"]
[Black "Vazquez, Facundo"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2557"]
[BlackElo "2155"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,105,17,12,46,40,37,-16,0,0,36,18,4,5,12,8,13,12,15,12,16,22,20,12,12,31,65,46,98,98,100,63,63,63,63,56,62,53,51,62,71,71,94,80,79,80,77,76,77,76,76,76,76,74,74,72,74,72,83,83,86,83,91,91,115,91,141,164,181,184,172,157,149,150,358,189,189,189,189,189,457,189,188,189,1500,230,230,229,5096,4982,5702,5439]} 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. Ngf3 Nc6 7. Nb3 cxd4 8. Nbxd4 Qb6 {8...Nc5 is becoming the main line.} 9. c3 Bc5 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} 10. a3 a5 11. Rb1 {[#]} ({Better is} 11. Be2 $14) 11... Nxd4 $146 {The position is equal.} ({Predecessor:} 11... O-O 12. Bd3 Nxd4 13. cxd4 Be7 14. Qc2 h6 15. h4 f5 16. g4 fxg4 17. Bh7+ Kh8 {0-1 (45) Brendel,B (2061)-Busch,F (1872) Bad Homburg 2014}) 12. Nxd4 f6 (12... Bxa3 $5 13. Be3 Bc5 $15) 13. exf6 Nxf6 14. Be3 O-O 15. b4 Bxd4 16. Bxd4 Qc7 17. Be5 Qe7 18. Bb5 Bd7 19. Bd3 axb4 20. axb4 Bc6 21. O-O Rfd8 (21... Ra2 $14) 22. Qe2 Ne4 23. Rf3 (23. Ra1 {feels hotter.} Rdc8 24. Bd4 Qf7 25. g3 Qf5 26. Be5) 23... Be8 24. Bxe4 dxe4 25. Rg3 Bg6 26. Bd4 Qc7 27. Rf1 Rd7 28. Rg5 Rf8 29. Re5 Rd5 30. Rxe6 Rxf4 31. Rxf4 Qxf4 32. Re7 Qc1+ 33. Qf1 Qxf1+ 34. Kxf1 $16 {[%mdl 4096] Endgame KRB-KRB} Rf5+ 35. Ke2 Rf7 36. Re5 Rc7 37. Ke3 Kf7 38. g4 h6 39. h4 Bh7 40. Rb5 Ke6 41. h5 Rf7 {[#]} 42. c4 $1 Kd6 43. Rb6+ Kc7 {[#] Strongly threatening ...Rf3+.} 44. c5 $1 Re7 $2 (44... Rf3+ $16 {was necessary.} 45. Ke2 Bg8 46. Be5+ (46. Bxg7 Bc4+ 47. Kd1 e3 $11) 46... Kd8) 45. Rd6 (45. b5 $142) 45... Rf7 $18 46. Ke2 Re7 47. b5 {Black must now prevent Bc3.} e3 $2 (47... Bg8 {was worth a try.} 48. Ke3 Bh7) 48. Bxe3 (48. Bc3 $142 {aiming for Ba5+.} Re8 49. Bxg7) 48... Bg8 49. Kf3 Re6 $2 (49... Kc8 50. b6 Bb3) 50. Rxe6 $2 (50. b6+ Kc8 51. Rxe6 Bxe6 52. Bd4) 50... Bxe6 51. Bd4 g6 $2 (51... Bc4 52. Bxg7 Bxb5 53. Bxh6 Kd7) 52. g5 hxg5 53. h6 {Accuracy: White = 76%, Black = 61%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.3"]
[White "Trois, Francisco R.T."]
[Black "Tristan, Leonardo"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2141"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,126,-33,-42,-44,-31,-47,-7,-27,-34,-36,-26,-29,-38,-50,-35,-35,-39,-43,-35,-45,-20,-29,-25,-18,0,-6,25,23,77,81,89,38,53,0,0,0,111,112,116,117,133,108,138,116,193,101,87,88,100,69,54,55,64,53,70,51,110,47,60,60,49,65,93,72,72,59,59,61,67,0,62,0,0,0,0,0,22,9,49,0,0,0,0,-20,0,-19,0,0,0,-35,-19,-53,-38,-20,-117,-263,-218,-589,-553,-1192,-988,-1556,-1420,-1218,-1258,-1209,-1275,-1493,-1279]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. b3 O-O 6. Bb2 c5 7. c4 d4 8. e3 Nc6 9. d3 e5 10. exd4 exd4 11. Re1 {11.h3 is the modern continuation. A14: English Opening: 1...e6 with b3 by White.} Bd6 12. Na3 Bf5 13. Nc2 {The position is equal.} a5 14. Nh4 Bg4 15. Qd2 Qd7 {[#]} 16. f4 $146 ({Predecessor:} 16. Na3 Rac8 17. Nb5 Bb8 18. a3 h6 19. f4 Bh3 20. Bxh3 Qxh3 21. Qg2 Qd7 22. Bc1 {½-½ (41) Jirovsky,M (2305)-Mozny,M (2385) Czechoslovakia 1991}) 16... Bh3 17. Bxh3 Qxh3 18. Qg2 Qd7 19. a4 Ra6 20. Bc1 Rb6 21. Rb1 Ne7 22. Bd2 Ra8 (22... Ra6 {feels hotter.} 23. Na3 Nc6 24. Qf3 Raa8 25. Nb5 Rae8) 23. Na3 Nf5 {[#]} (23... Nc6 $11 {remains equal.}) 24. Nxf5 $1 $16 Qxf5 25. Qf1 (25. Qf3 $16) 25... h5 $14 26. h3 (26. Nb5 $14) 26... Bb8 $11 27. Kg2 Bd6 (27... Raa6 $11) 28. Qf3 Qd7 29. Nb5 Rc6 30. Re2 Bf8 31. Rbe1 b6 (31... g6 $16 {was necessary.}) 32. Re5 (32. f5 $18) 32... Rcc8 $16 {[#]} 33. f5 $1 Re8 34. g4 hxg4 35. hxg4 Rxe5 36. Rxe5 Re8 37. Bf4 g6 (37... Rxe5 $14 38. Bxe5 Ne8) 38. Kf2 (38. Nc7 $16 Rxe5 39. Bxe5) 38... Rxe5 $1 $14 39. Bxe5 Qe7 40. Bf4 Nd7 41. fxg6 fxg6 42. Qd5+ Kh8 43. Qh1+ Kg8 $1 44. Qd5+ Kh8 45. Bg5 ({White should play} 45. g5 $14) 45... Nf6 $1 $11 {[%cal Rf6d5]} 46. Qf3 Bg7 47. Bf4 Qd7 48. Kg3 Qe6 49. Bd2 (49. Nc7 $5 {[%cal Rc7e6]} Qe1+ 50. Kh3 $11) 49... Nd7 50. Bf4 Ne5 51. Bxe5 Qxe5+ 52. Kf2 Qh2+ 53. Kf1 Kh7 54. Ke1 Be5 55. Kf1 Kh6 $36 {[%mdl 2048] Hoping for ...Bb8. White is under pressure.} 56. Na7 $1 Kg5 57. Nc6 (57. Nc8 $17 {was forced.}) 57... Bf6 58. Qe4 $2 (58. Qd5+ {is a better chance.} Kxg4 59. Qe6+ Kg5 60. Qd5+ Kh6 61. Qf3) 58... Qf4+ $19 {Black is clearly winning.} 59. Qxf4+ Kxf4 60. Ke2 Kxg4 61. Nb8 g5 62. Nd7 Bd8 63. Ne5+ Kf4 {Accuracy: White = 62%, Black = 78%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.4"]
[White "Lima, Darcy"]
[Black "Dominguez, Facundo"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2526"]
[BlackElo "2135"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,77,0,0,0,0,0,0,13,4,13,0,0,0,18,10,55,55,87,92,93,29,20,22,24,8,33,32,32,32,51,51,51,32,32,22,32,32,38,39,59,29,29,8,29,8,42,42,42,42,74,38,38,38,38,38,38,39,141,202,370,366]} 1. g3 Nf6 2. Bg2 e5 3. e4 Bc5 4. Nc3 O-O 5. Nf3 Nc6 6. O-O d5 7. exd5 Nxd5 8. Re1 Nxc3 9. bxc3 Bb6 10. d3 f6 {[#] C47: Scotch Four Knights and Four Knights with 4 g3.} 11. Be3 $146 ({Predecessor:} 11. Nd2 Be6 12. a4 Qd7 13. Ba3 Rfe8 14. Nb3 Bd5 15. Bxd5+ Qxd5 16. Bb4 Nxb4 17. cxb4 c6 18. a5 {½-½ (37) Jimenez Melguizo,F (2280)-Morales,O (2279) ICCF email 2018}) 11... Bg4 12. Qb1 Re8 {The position is equal.} 13. Nd2 Be6 14. a4 Rb8 15. Qb5 Bd7 16. Qd5+ Be6 (16... Kh8 {is more complex.} 17. Nc4 Ne7 18. Qe4 Bc6 19. Qg4 Bxe3 20. Nxe3 Qd6) 17. Qxd8 $1 Rexd8 18. Bxc6 {[#] Threatens to win with Bh1.} bxc6 19. a5 ({White should play} 19. Bxb6 $16 axb6 20. f4) 19... Bxe3 $11 20. fxe3 Rb2 21. Rec1 Rdb8 22. c4 Bf5 {White should prevent ...Bxd3!} 23. e4 Bc8 24. Kf2 Kf8 25. Ra3 R2b4 26. Ke3 Ke7 27. Nb3 Kd6 28. Kd2 c5 29. Kc3 a6 30. Raa1 Be6 31. Nd2 Bd7 32. Nf1 h5 33. Ne3 c6 34. Rf1 Ke7 35. Rfe1 Be6 36. Nf1 Kf7 37. Nd2 Bg4 (37... Ke7 $1 $14) 38. Nb3 $16 R4b7 $2 {[#]} (38... Ke7 39. Nxc5 Bc8) 39. Nxc5 {Accuracy: White = 88%, Black = 71%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.5"]
[White "Curi, Gabriel"]
[Black "Vazquez, Guillermo"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "2132"]
[BlackElo "2524"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,74,15,4,44,13,31,21,12,26,16,22,26,12,37,30,51,20,21,25,23,7,37,-31,-36,-47,0,-31,-8,-23,-12,-23,-24,-70,-70,-75,-70,-77,-77,-75,-62,-156,-169,-197,-193,-237,-78,-68,-67,-327,-328,-311,-316,-495,-493,-893,-881,-815,-797,-895,-852,-29987,-29988,-29989,-29990,-29990,-29991]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Be2 g6 {B11: Caro-Kann: Two Knights Variation.} 7. O-O Bg7 8. Rd1 d4 {The position is equal.} 9. Nb1 $1 Ne7 10. d3 c5 11. a4 O-O 12. Na3 Nbc6 13. Qg3 a6 14. Bf4 e5 15. Bd2 Rb8 16. f4 (16. h4 $14) 16... b5 $15 17. Rf1 Bh6 (17... f5 {keeps more tension.} 18. fxe5 Bxe5 19. Qh4 Qc7 20. Bh6 Rf7) 18. Qh4 (18. axb5 {is interesting.} axb5 19. Nb1 Bxf4 20. Bxf4 exf4 21. Qxf4 f6 22. Nd2) 18... Bxf4 19. Bxf4 exf4 20. axb5 axb5 21. Rxf4 Ne5 22. Raf1 N7c6 {[#] Hoping for ...Qxh4.} 23. Qh6 $146 {[#] aiming for Rh4.} ({Predecessor:} 23. Qf2 b4 24. Nb1 b3 25. c4 Nb4 26. Qg3 f6 27. Kh2 Qd6 28. Na3 Nc2 29. Nb5 {0-1 (53) Perez Ponsa,F (2553)-Nakamura,H (2781) Caleta 2018}) 23... f6 24. Nb1 Nb4 25. Bd1 (25. Na3 $15) 25... c4 $17 26. dxc4 bxc4 27. Nd2 Nxc2 $2 {[#]} (27... d3 $19 {and Black stays clearly on top.} 28. c3 Nc2) 28. Bxc2 Rxb2 29. Nxc4 $2 {[%mdl 8192]} (29. Rh4 $2 Rf7 $19) (29. Ba4 $15) 29... Nxc4 $19 30. e5 Nxe5 ({But not} 30... Rxc2 $2 31. Rxf6 Rxg2+ 32. Kh1 $18 (32. Kxg2 Ne3+ {[%mdl 64] Double Attack} 33. Kg1 Nxf1 $11)) 31. Be4 (31. Bd1 {keeps fighting.}) 31... d3 32. Kh1 (32. Qh4 $142) 32... d2 33. Rd1 f5 34. Rh4 Rf7 35. Bf3 Nxf3 {Black mates.} 36. gxf3 Qd3 37. Qf4 Rb1 {Accuracy: White = 56%, Black = 81%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.6"]
[White "Hungaski, Robert"]
[Black "Munoz Perez, Rolando"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2504"]
[BlackElo "2130"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,88,44,39,43,55,19,34,23,27,10,10,17,16,0,0,0,0,-57,31,31,28,31,33,27,32,35,57,41,59,29,31,47,36,0,12,-31,-30,-54,-58,-36,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d6 8. e4 Nbd7 9. d4 cxd4 10. Nxd4 Qc7 11. b3 a6 12. Bb2 O-O 13. Rc1 Rac8 14. f4 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} Rfd8 15. Kh1 Bf8 16. Qe2 {White is slightly better.} Qb8 17. f5 {[#]} exf5 $146 ({Predecessor:} 17... Re8 18. fxe6 fxe6 19. Rf1 Qa8 20. Rce1 Rc5 21. Kg1 Ne5 22. Bh3 Bc8 23. Na4 Rc7 24. Nxb6 {1-0 (51) Suter,S (2077)-Cohrs,G Biel 2000}) 18. Nxf5 g6 19. Nd4 Re8 20. Qf3 Bg7 21. Nd5 (21. Qf4 $11) 21... Bxd5 ({Black should try} 21... b5 $1 $15) 22. exd5 $14 {[#] Black must now prevent Nc6.} Rxe1+ 23. Rxe1 {Strongly threatening Nc6.} Re8 24. Rf1 Ne5 {[%cal Bd7e5,Be5g4,Bg4e3][%mdl 32]} 25. Qd1 Neg4 {White should prevent ...Ne3.} 26. Nc6 Qc7 {With the idea ...Ne3.} 27. Qa1 {[%cal Rb2f6]} Nh5 28. Bxg7 Nxg7 29. Qd4 h5 30. h3 Ne3 31. Re1 Ngf5 {[%mdl 64] [#] Double Attack} 32. Qf4 Qd7 (32... Kg7 $5 {[%cal Re3g2]} 33. Nd4 Re5 $11) 33. Qf2 $1 {The position is equal.} Nxg2 34. Kxg2 b5 35. cxb5 axb5 36. g4 Rxe1 37. Qxe1 hxg4 38. hxg4 Nh6 39. g5 Qg4+ 40. Qg3 {aiming for Qxg4.} Qe2+ 41. Qf2 $1 {[%cal Rf2e2]} Qg4+ 42. Qg3 {Qxg4 is the strong threat.} Qe2+ 43. Qf2 $1 {[%cal Rf2e2]} Qg4+ 44. Qg3 {Hoping for Qxg4.} Qe2+ {Accuracy: White = 77%, Black = 89%.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.7"]
[White "Guerrero, Alvaro"]
[Black "Rodriguez Vila, Andres"]
[Result "0-1"]
[ECO "E70"]
[WhiteElo "2094"]
[BlackElo "2492"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,64,22,62,58,54,45,51,35,58,9,9,12,9,8,14,12,17,25,25,0,24,26,39,58,84,103,105,95,95,96,125,45,62,69,82,-18,36,23,63,44,54,62,130,149,120,-722,-733,-728,-708,-2268,-2105,-1563,-1213,-1177,-1151]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be3 d6 6. f3 Na6 {6...Nc6 is setting a new trend.} 7. Nge2 {E81: King's Indian: Sämisch: 6th move deviations (including 6 Be3 c6).} c5 8. d5 Nc7 9. Ng3 {White is slightly better.} e6 10. Be2 exd5 11. cxd5 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 12. Qd2 b4 13. Nd1 {[%cal Bc3d1,Bd1e3,Be3c4][%mdl 32] [#]} Re8 $146 ({Predecessor:} 13... Bd7 14. Bh6 Nb5 15. Bxb5 Bxb5 16. h4 Nd7 17. Bxg7 Kxg7 18. h5 Qe7 19. Ne3 Kg8 {0-1 (69) Defibaugh,J (2236)-Gonzalez,F (2315) ICC INT 2014}) 14. a3 a5 15. O-O Bd7 16. a4 Rb8 17. Bf4 Bc8 18. Ne3 h5 {White should prevent ...h4.} 19. Nc4 $1 h4 20. Nh1 ({But not} 20. Nxd6 $6 hxg3 21. Nxe8 gxh2+ 22. Kxh2 (22. Bxh2 Nfxe8 23. Bg3 Nd6 $11) 22... Nfxe8 $11) ({Of course not} 20. Nxa5 Ra8 $14) 20... Nh5 21. Bxd6 (21. Bg5 $1 $16 {[%cal Rg5d8]} Bf6 22. Be3) 21... Bd4+ 22. Nf2 Ba6 23. Bxc7 ({White should try} 23. Kh1 $16) 23... Qxc7 $11 24. Kh1 Kg7 25. Nh3 $1 Bc8 26. d6 Qd8 {[#]} ({Better is} 26... Qc6 $14) 27. f4 $1 $36 {[%mdl 2048] Black is under strong pressure.} Rxe4 28. Ng5 $2 {[%mdl 8192] [#]} (28. Bxh5 $16 gxh5 29. Ng5) 28... Ng3+ $1 $19 {[%mdl 512] Black is clearly winning.} 29. hxg3 hxg3 30. f5 Qh8+ 31. Nh3 {[#]} Bb7 {Played: Re4-h4} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.8"]
[White "Hoffman, Alejandro"]
[Black "Torella, Rodolfo"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2472"]
[BlackElo "2081"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,51,33,27,53,53,45,15,0,12,63,33,52,42,54,58,88,70,89,76,92,46,104,103,101,85,197,202,409,440,381,420,375,240,666,643,743,688]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 c6 5. e3 h6 6. Bxf6 Qxf6 7. Nc3 Nd7 8. Bd3 Bb4 9. O-O Bxc3 {D43: Semi-Slav: 5 Bg5 h6.} 10. bxc3 O-O 11. Rb1 dxc4 {The position is equal.} 12. Bxc4 e5 {[#]} (12... b6 $11) 13. Be2 $146 ({Predecessor:} 13. e4 exd4 14. cxd4 Nb6 15. Qb3 Qf4 16. Rfe1 Nxc4 17. Qxc4 Be6 18. Qc2 Rab8 19. a3 {½-½ (42) Prazmowski,B (1880)-Hanusek,K (1779) Murzasichle 2011}) 13... Re8 14. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} c5 15. a5 e4 16. Nd2 Qg5 17. Nc4 Nf6 18. Kh1 Rd8 ({Black should try} 18... Re7 $14) 19. Rb5 $16 Rd5 20. f4 Qh4 (20... exf3 $16 {is a better defense.} 21. Bxf3 Be6) 21. Ne5 $18 ({Resist} 21. Rxc5 $6 Rxc5 22. dxc5 Ng4 $14) 21... cxd4 $2 (21... b6 {might work better.} 22. Qa4 (22. axb6 axb6 23. Bc4 Ng4 $16 {[%mdl 64] Double Attack}) 22... Ba6) 22. Rxd5 Nxd5 23. Qxd4 {[%mdl 64] [#] Double Attack} Nc7 24. Qxe4 {Black must now prevent Bd3.} Rb8 $2 (24... Qe7 25. Rd1 Be6 26. Qxb7 Qc5) 25. Bd3 {aiming for Qh7+.} f5 26. Qc4+ {[%mdl 64] Double Attack. Accuracy: White = 63%, Black = 36%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.9"]
[White "Suarez, Pedro"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "0-1"]
[ECO "E41"]
[WhiteElo "2063"]
[BlackElo "2450"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,94,0,0,8,0,7,0,0,-20,0,0,0,0,0,0,0,-14,-5,-22,-15,-26,-30,-45,-41,-56,-58,-69,-56,-112,-101,-116,-119,-106,-96,-129,-104,-129,-125,-149,-154,-154,-169,-162,-167,-174,-173,-166,-162,-193,-193,-183,-187,-183,-183,-307,-300,-313,-295,-342,-339,-333,-306,-319,26,-305,-96,-363,-358,-368,-355,-361,-332,-363,-353,-454,-342,-493,-493,-502,-512,-677,-664,-645,-652]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nge2 cxd4 7. exd4 O-O {E41: Nimzo-Indian: Rubinstein: 4...c5 5 Bd3, including Hübner Variation} 8. O-O d5 9. Bf4 dxc4 {The position is equal.} 10. Bxc4 {[#]} Bxc3 $146 ({Predecessor:} 10... Bd6 11. Qc1 b6 12. Rd1 Na5 13. Bd3 Bxf4 14. Nxf4 Bb7 15. h3 Rc8 16. Qe3 Rc7 17. Nb5 Rd7 {½-½ (79) Glembek,B (2212)-Pheby,I (2246) ICCF email 2016}) 11. bxc3 b6 12. Qd3 Na5 13. Bb3 Bb7 14. Qh3 Bd5 15. Bc2 Be4 16. Bxe4 Nxe4 17. Rfd1 Rc8 18. Qd3 Qd5 19. f3 Nf6 20. Ng3 (20. Be5 $15) 20... Qc6 21. Rac1 Nd5 22. Ne2 Nc4 {Hoping for ...Nb2.} 23. Qb1 Rfd8 24. Qb3 Na5 25. Qa3 Qb5 26. Kf2 Rc4 {[%cal Bc8c4,Bc4a4,Ba4a5][%mdl 32]} 27. Rb1 Qc6 28. Bd2 Ra4 29. Qb2 Rc8 30. Rbc1 Nc4 31. Qc2 Qb5 $36 {[%mdl 2048] Black is on the roll.} 32. Qb3 Qa6 33. Rc2 (33. Ra1 {only move.}) 33... Ra5 $19 {White must now prevent ...Rb5.} 34. Rb1 Na3 {[%mdl 64] Double Attack} 35. Rbb2 Nxc2 36. Qxc2 Ra3 {Played: Qa6-c4} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.10"]
[White "Garcia Palermo, Carlos"]
[Black "Meza, Anahi"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2434"]
[BlackElo "2046"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,0,-23,48,48,83,37,20,0,3,0,0,0,0,0,-3,0,36,36,66,33,39,34,34,26,39,21,54,45,75,0,0,0,0,0,0,-7,0,0,0,-175,-191,-154,-191,-204,-189,-218,-207,-236]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ 5. c3 Nf6 6. Nd2 cxd4 7. Nb3 Qb6 8. cxd4 {[#]} d6 $146 {A45: Trompowsky Attack.} (8... a5 $11) ({Predecessor:} 8... Nc6 9. e4 e5 10. dxe5 Bb4+ 11. Ke2 Nxe5 12. Qd4 Ng6 13. Be3 d5 14. exd5 O-O 15. a3 Qxd4 16. Bxd4 {0-1 (89) Hodgson,J (2550)-Gelfand,B (2665) Groningen 1996}) 9. e4 $14 Nbd7 10. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} e5 {White is slightly better.} 11. a5 Qd8 12. Bg3 Nh5 13. Ne2 Nxg3 14. hxg3 Be7 15. Nc3 $36 {[%mdl 2048] White is pushing.} exd4 16. Nxd4 O-O 17. Bc4 Ne5 18. Bd5 {f4 is the strong threat.} Rb8 19. Qd2 Bd7 20. O-O h5 21. Nf5 b5 22. Bb3 (22. b4 $16) 22... Bxf5 $11 23. exf5 Nc4 24. Bxc4 bxc4 25. Nd5 Bf6 26. Ra2 Rb3 27. Rf2 $2 {[#]} (27. Qf4 $11 {and White stays safe.}) 27... Rd3 $19 {Black is clearly better.} 28. Nxf6+ Qxf6 29. Qf4 Rd4 30. Qe3 Rd1+ 31. Kh2 {Accuracy: White = 68%, Black = 67%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.11"]
[White "Pichuaga, Juan Pablo"]
[Black "Roselli Mailhe, Bernardo"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2030"]
[BlackElo "2433"]
[Annotator "ChessBase"]
[PlyCount "128"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. d3 {[%emt 0:00:04]} Nc6 {[%emt 0:01:19]} 4. g3 {[%emt 0:00:07]} d5 {[%emt 0:03:30]} 5. Bg2 {[%emt 0:00:24]} d4 {[%emt 0:03:42]} 6. Nce2 {[%emt 0:01:10]} Bd6 {[%emt 0:05:49]} 7. f4 {[%emt 0:02:30]} f6 {[%emt 0:06:23]} 8. Nf3 {[%emt 0:02:06]} Bd7 {[%emt 0:00:37]} 9. c3 {[%emt 0:03:33]} e5 {[%emt 0:06:50]} 10. O-O {[%emt 0:02:02]} Qb6 {[%emt 0:02:53]} 11. c4 {[%emt 0:08:41]} O-O-O {[%emt 0:04:54]} 12. Rb1 {[%emt 0:02:59]} h6 {[%emt 0:04:44]} 13. a3 {[%emt 0:06:49]} a5 {[%emt 0:02:41]} 14. b3 {[%emt 0:04:06]} Nge7 {[%emt 0:01:56]} 15. Bd2 {[%emt 0:06:42]} Rde8 {[%emt 0:02:07]} 16. f5 {[%emt 0:08:51]} g6 {[%emt 0:03:24]} 17. fxg6 {[%emt 0:08:02]} Nxg6 {[%emt 0:08:02]} 18. Nh4 {[%emt 0:03:01]} Nxh4 {[%emt 0:03:25]} 19. gxh4 {[%emt 0:00:20]} Reg8 {[%emt 0:00:46]} 20. Ng3 {[%emt 0:02:03]} Rg4 {[%emt 0:05:01]} 21. Rxf6 {[%emt 0:09:19]} Be7 {[%emt 0:04:19]} 22. Rxh6 {[%emt 0:08:42]} Rxh6 {[%emt 0:00:19]} 23. Bxh6 {[%emt 0:00:08]} Rxh4 {[%emt 0:00:03]} 24. Qd2 {[%emt 0:03:38]} Qd8 {[%emt 0:01:22]} 25. Rf1 {[%emt 0:01:00]} Qh8 {[%emt 0:07:01]} 26. Bg5 {[%emt 0:00:58]} Bxg5 {[%emt 0:01:02]} 27. Qxg5 {[%emt 0:00:07]} Rxh2 {[%emt 0:01:43]} 28. Nf5 {[%emt 0:03:11]} Rh7 {[%emt 0:01:29]} 29. Qg6 {[%emt 0:01:57]} Bxf5 {[%emt 0:11:27]} 30. exf5 {[%emt 0:01:34]} Rh6 {[%emt 0:00:17]} 31. Qg4 {[%emt 0:03:26]} Qf6 {[%emt 0:00:42]} 32. Qg8+ {[%emt 0:01:29]} Kc7 {[%emt 0:00:48]} 33. Qd5 {[%emt 0:00:27]} Qg5 {[%emt 0:02:34]} 34. Qxc5 {[%emt 0:03:18]} Rf6 {[%emt 0:01:38]} 35. Rf3 {[%emt 0:01:12]} Qc1+ {[%emt 0:01:12]} 36. Kf2 {[%emt 0:00:40]} Qd2+ {[%emt 0:00:41]} 37. Kf1 {[%emt 0:00:46]} Rxf5 {[%emt 0:00:56]} 38. Rxf5 {[%emt 0:00:57]} Qxd3+ {[%emt 0:00:03]} 39. Kg1 {[%emt 0:00:22]} Qxf5 {[%emt 0:00:07]} 40. Bxc6 {[%emt 0:01:04]} bxc6 {[%emt 0:00:19]} 41. Qe7+ {[%emt 0:01:02]} Kc8 {[%emt 0:01:48]} 42. Qe8+ {[%emt 0:00:42]} Kc7 {[%emt 0:00:54]} 43. Qe7+ {[%emt 0:00:09]} Kc8 {[%emt 0:00:29]} 44. Qe8+ {[%emt 0:00:06]} Kb7 {[%emt 0:00:02]} 45. Qe7+ {[%emt 0:01:00]} Ka6 {[%emt 0:00:18]} 46. Qe8 {[%emt 0:00:31]} Qg4+ {[%emt 0:00:55]} 47. Kf2 {[%emt 0:00:18]} Qf4+ 48. Kg2 {[%emt 0:00:13]} Qg5+ {[%emt 0:01:16]} 49. Kf2 {[%emt 0:00:13]} Qh4+ {[%emt 0:00:33]} 50. Kg2 {[%emt 0:00:09]} Qe4+ {[%emt 0:00:48]} 51. Kf2 {[%emt 0:00:58]} Qc2+ {[%emt 0:00:32]} 52. Kg1 {[%emt 0:00:45]} Qd1+ {[%emt 0:00:11]} 53. Kg2 {[%emt 0:00:13]} Qe2+ {[%emt 0:00:10]} 54. Kg1 {[%emt 0:00:25]} Qe1+ {[%emt 0:01:27]} 55. Kh2 {[%emt 0:00:53]} Qf2+ {[%emt 0:00:35]} 56. Kh1 {[%emt 0:00:20]} Qf3+ {[%emt 0:00:31]} 57. Kh2 {[%emt 0:00:22]} Qf4+ {[%emt 0:00:22]} 58. Kg1 {[%emt 0:00:16]} Qg3+ {[%emt 0:00:44]} 59. Kh1 {[%emt 0:00:28]} Qf3+ {[%emt 0:00:33]} 60. Kg1 {[%emt 0:00:05]} d3 {[%emt 0:00:24]} 61. Qa8+ {[%emt 0:00:31]} Kb6 {[%emt 0:00:06]} 62. Qb8+ {[%emt 0:00:10]} Ka6 {[%emt 0:00:18]} 63. Qa8+ {[%emt 0:00:09]} Kb6 {[%emt 0:00:05]} 64. Qb8+ {[%emt 0:00:07]} Ka6 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.12"]
[White "Liascovich, Lucas"]
[Black "Escofet, Jaime"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2425"]
[BlackElo "2025"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,51,18,17,40,35,69,75,79,74,77,28,40,40,65,57,64,40,61,52,60,69,63,77,74,69,71,75,76,62,133,138,143,137,546,573,572,562]} 1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 d5 5. O-O Bd6 6. c4 c6 7. b3 Qe7 8. Bb2 O-O 9. Ne5 Bd7 {A90: Dutch Defence: Miscellaneous and Modern Stonewall (with ...Bd6).} 10. Nd2 Ne4 11. Nxe4 fxe4 {White is better.} 12. f3 exf3 13. Bxf3 Be8 14. e4 {[%cal Re4d5] [#]} dxe4 $146 ({Predecessor:} 14... Bxe5 15. dxe5 dxc4 16. bxc4 Qc5+ 17. Qd4 Qxd4+ 18. Bxd4 Na6 19. Bg4 Bd7 20. Bc3 Rxf1+ 21. Rxf1 {1-0 (28) Shevchenko,A (2144)-Kovalenko,S (2305) Voronezh 2008}) 15. Bxe4 Rxf1+ 16. Qxf1 Nd7 17. Qh3 Nf8 18. Nf3 Bg6 19. Bxg6 Nxg6 20. Re1 {[%cal Ba1e1,Be1e2,Be2f2][%mdl 32]} Re8 21. Qh5 Nf8 22. Ng5 $36 {[%mdl 2048] Black must now prevent Rxe6! White is pushing.} g6 (22... h6 $1 $14 23. Ne4 Rd8) 23. Qh6 $16 Bb4 {[#]} 24. Re2 $1 {aiming for a3!} Ba3 $2 {[%mdl 8192]} (24... e5 $16 {is a better chance.} 25. a3 (25. Rxe5 Qd8 $16) (25. dxe5 Qd7 $16) 25... Bxa3) 25. Bxa3 $18 Qxa3 26. Rf2 {[%mdl 64] Remove Defender. Accuracy: White = 94%, Black = 57%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.13"]
[White "Brizzi, Milagros Tatiana"]
[Black "Acosta, Pablo Ismael"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2022"]
[BlackElo "2416"]
[Annotator "RC"]
[PlyCount "96"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:00:56]} e6 {[%emt 0:00:00]} 2. d3 {[%emt 0:00:16]} c5 {[%emt 0:00:59]} 3. Nf3 {[%emt 0:00:31]} Nc6 {[%emt 0:00:10]} 4. g3 {[%emt 0:00:18]} g6 {[%emt 0:00:08]} 5. Bg2 {[%emt 0:00:31]} Bg7 {[%emt 0:00:07]} 6. O-O {[%emt 0:00:46]} Nge7 {[%emt 0:00:39]} 7. c3 {[%emt 0:05:37]} d6 {[%emt 0:01:15]} 8. Nbd2 {[%emt 0:02:47]} O-O {[%emt 0:00:33]} 9. Re1 {[%emt 0:03:04]} h6 {[%emt 0:05:17]} 10. Nb3 {[%emt 0:08:48]} e5 {[%emt 0:05:00]} 11. d4 {[%emt 0:08:49]} exd4 {[%emt 0:05:57]} 12. cxd4 {[%emt 0:00:34]} Bg4 {[%emt 0:06:58]} 13. Be3 {[%emt 0:09:05]} c4 {[%emt 0:06:20]} 14. Nbd2 {[%emt 0:09:47]} b5 {[%emt 0:01:03]} 15. h3 {[%emt 0:00:26]} Bxf3 {[%emt 0:04:29]} 16. Nxf3 {[%emt 0:00:21]} Kh7 {[%emt 0:04:52]} 17. Qd2 {[%emt 0:04:33]} Qa5 {[%emt 0:04:08]} 18. Qe2 {[%emt 0:09:19]} Rac8 {[%emt 0:05:36]} 19. a3 {[%emt 0:02:32]} Rfe8 {[%emt 0:05:02]} 20. Rad1 {[%emt 0:05:31]} Ng8 {[%emt 0:03:41]} 21. Qc2 {[%emt 0:13:24]} Nf6 {[%emt 0:01:43]} 22. d5 {[%emt 0:02:38]} Nb8 {[%emt 0:06:46]} 23. Bf4 {[%emt 0:02:09]} Rcd8 {[%emt 0:00:43]} 24. Nd4 {[%emt 0:03:04]} Nxd5 {[%emt 0:01:29]} 25. Bd2 {[%emt 0:05:42]} Qa4 {[%emt 0:01:57]} 26. Qxa4 {[%emt 0:00:33]} bxa4 {[%emt 0:00:07]} 27. Ba5 {[%emt 0:00:07]} Nb6 {[%emt 0:00:48]} 28. Bc3 {[%emt 0:00:54]} d5 {[%emt 0:04:45]} 29. exd5 {[%emt 0:00:42]} Rxe1+ {[%emt 0:00:52]} 30. Rxe1 {[%emt 0:00:06]} Nxd5 {[%emt 0:00:13]} 31. Bxd5 {[%emt 0:00:48]} Rxd5 {[%emt 0:00:04]} 32. Re8 {[%emt 0:00:28]} Nd7 {[%emt 0:04:54]} 33. Ne2 {[%emt 0:00:34]} Nb6 {[%emt 0:02:33]} 34. Re7 {[%emt 0:00:37]} Rd7 {[%emt 0:00:13]} 35. Rxd7 {[%emt 0:00:33]} Nxd7 {[%emt 0:00:05]} 36. Nd4 {[%emt 0:00:22]} Nc5 {[%emt 0:03:43]} 37. Kg2 {[%emt 0:00:39]} Ne4 {[%emt 0:00:32]} 38. Kf3 {[%emt 0:00:32]} Nxc3 {[%emt 0:02:35]} 39. bxc3 {[%emt 0:00:04]} Bf8 {[%emt 0:00:26]} 40. Nc2 f5 41. Ke2 {[%emt 0:01:30]} g5 {[%emt 0:00:41]} 42. f3 {[%emt 0:00:27]} Kg6 {[%emt 0:00:10]} 43. Kd2 {[%emt 0:00:31]} Bd6 {[%emt 0:00:44]} 44. g4 {[%emt 0:00:28]} Kf6 {[%emt 0:03:38]} 45. Ne3 {[%emt 0:00:25]} fxg4 46. Nxg4+ {[%emt 0:00:40]} Kg6 {[%emt 0:01:02]} 47. Ke3 {[%emt 0:00:27]} h5 {[%emt 0:00:00]} 48. Nh2 Bxh2 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.14"]
[White "Menna Barreto, Felipe Kubiaki"]
[Black "Meskanen, Vesa"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2395"]
[BlackElo "2019"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,49,54,52,57,35,56,33,20,33,95,82,88,6,9,0,2,17,161,158,144,151,113,114,92,103,75,108,137,112,949,910]} 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 Bd7 9. O-O O-O 10. h3 Rc8 11. Rc1 Nxd4 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} 12. Bxd4 Bc6 {[#]} 13. Qc2 $146 (13. Bxa7 b6 $17) ({Predecessor:} 13. Qd3 a6 14. f4 b5 15. cxb5 axb5 16. Nd5 Nxd5 17. exd5 Bxd4+ 18. Qxd4 Bd7 19. Rfe1 {0-1 (42) Foldesi,M (2040)-Nagy,A (2058) Slovakia 2017}) 13... a6 {White is slightly better.} 14. Qb1 b5 (14... Qd7 $14) 15. cxb5 $16 axb5 16. b4 ({But not} 16. Nxb5 $6 Bxe4 17. Rxc8 Qxc8 $11) (16. Bxb5 $16 Bh6 17. Rc2) 16... Qd7 $11 17. Rfd1 Bh6 18. Bxf6 Bxc1 (18... exf6 $11 19. Rc2 Bf4) 19. Bg4 $18 Qb7 20. Bxc8 Rxc8 21. Qxc1 {[#] And now Bg5 would win.} exf6 22. Qf4 f5 23. exf5 {Strongly threatening f6.} Bxg2 {[#]} 24. f6 $1 {White wants to mate with Qh6.} Bh1 $2 {[%mdl 8192]} ({Don't blunder} 24... Bxh3 $2 25. Nd5 $18) (24... Qf3 $16 25. Qxf3 Bxf3 26. Rxd6 h5) 25. Nd5 {Accuracy: White = 86%, Black = 54%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.15"]
[White "Gomez Troccoli, Martin"]
[Black "Mussanti, Diego"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "2004"]
[BlackElo "2330"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,84,-24,-24,-54,-56,-52,-56,-65,-81,-98,-70,-83,-68,-63,-22,-36,-30,-112,-104,-166,-61,-193,-151,-202,-216,-200,-212,-193,-202,-194,-193,-193,-194,-214,0,0,0,0,0,0,0,0,0,-562,-564,-485,-377,-395,-390,-381,-376,-380,-364,-368,-270,-340,-301,-362,-292,-518,-524,-509,-468,-526,-485,-632,-554,-12739,-12739,-29982,-29983,-6175,-6175]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Bb4 7. f3 O-O 8. Be2 {B44: Sicilian: Taimanov: 5 Nb5.} d5 9. Nxc6 bxc6 {[#]} 10. e5 $146 {Black is slightly better.} ({Predecessor:} 10. cxd5 cxd5 11. O-O d4 12. Na4 e5 13. a3 Be7 14. b4 Bd7 15. Nb2 a5 16. Bd2 axb4 17. axb4 {0-1 (36) Sjogren,S (1822)-Kryvoruchko,Y (2666) Warsaw 2011}) 10... Nd7 11. f4 Qb6 12. a3 Bxc3+ 13. bxc3 f6 14. cxd5 cxd5 15. Qd4 (15. exf6 $11 {was the only way to keep the balance.} Nxf6 16. Qd3) 15... fxe5 $17 16. fxe5 (16. Qxb6 $17 {was worth a try.} axb6 17. fxe5) 16... Qc7 (16... Qc6 $19 17. c4 Ba6 18. cxd5 exd5 19. Bxa6 Qxa6 20. Qxd5+ Kh8) 17. Bf4 {[#]} (17. Rf1 $15) 17... Ba6 $1 $19 {[%mdl 512]} 18. Bxa6 (18. Ra2 $17 Bxe2 19. Rxe2) 18... Rxf4 $1 19. Qxf4 Qxc3+ {[%mdl 64] Double Attack} 20. Ke2 {[#]} Rf8 $1 {[%cal Rf8f4]} 21. Qc1 Qxe5+ 22. Kd1 Qd4+ 23. Ke1 {Black should prevent Rf1.} Qe5+ $2 (23... Qh4+ $19 24. Kd2 Qf4+ 25. Ke1 Qh4+ 26. Kd2 Qd4+ 27. Ke1 Qf2+ {[%mdl 64] Double Attack} 28. Kd1 Qxg2) 24. Be2 $11 {Rf1 is the strong threat.} Nc5 $1 {[%cal Rc5d3]} 25. Qxc5 Qxa1+ 26. Bd1 Qe5+ 27. Kd2 Qg5+ {[%mdl 64] Double Attack} 28. Kc3 $2 {[%mdl 8192]} (28. Kd3 $11) 28... Qc1+ $19 29. Bc2 Qxh1 30. Bxh7+ Kxh7 31. Qxf8 Qxh2 {[%mdl 4096] Endgame KQ-KQ} 32. Qf3 Qe5+ 33. Kb3 Qb8+ 34. Ka4 {intending Qh3+.} Qe8+ 35. Ka5 Qd7 36. Qg3 $2 (36. Kb4) 36... d4 {[%cal Bd5d4,Bd4d3][%mdl 32] Hoping for ...d3.} 37. Qh2+ Kg8 {Strongly threatening ...d3.} 38. Qb8+ Kf7 39. Qf4+ Ke8 {Threatens to win with ...d3.} 40. Qh2 d3 41. Qh8+ Kf7 42. Qh5+ Kg8 {Accuracy: White = 45%, Black = 70%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.16"]
[White "Gaye, Gustavo"]
[Black "De Dovitiis, Alejo"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2001"]
[BlackElo "2314"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,48,0,41,-15,-19,-39,-39,-22,-23,-23,-35,-26,-27,-33,-11,-47,-60,-59,-19,-21,-27,-24,20,21,51,45,75,27,64,-33,-39,-54,-43,-94,-79,-140,-131,-802,-802,-794,-776]} 1. e4 g6 2. Nc3 Bg7 3. g3 c6 4. Bg2 Nf6 5. d3 d5 6. Nf3 {B06: Modern Defence.} ({Better is} 6. e5 $1 $14 Ng4 7. d4) 6... dxe4 $11 {[#]} 7. Nxe4 $146 ({Predecessor:} 7. dxe4 Qxd1+ 8. Kxd1 O-O 9. Ke1 e5 10. h3 Re8 11. Be3 Na6 12. a3 Bf8 13. Nd2 {0-1 (58) Porth,H (2130)-Becker,A (2125) Duesseldorf 2008}) 7... Nxe4 8. dxe4 {Black is slightly better.} Qxd1+ 9. Kxd1 Na6 {[%cal Bb8a6,Ba6c5,Bc5a4][%mdl 32]} 10. c3 Nc5 11. Ne1 f5 12. f3 fxe4 13. fxe4 Bg4+ 14. Kc2 O-O {Threatens to win with ...Rf2+.} 15. Be3 Na4 16. Rf1 b5 17. Nd3 Rfd8 18. Rf2 Rd7 19. Nc5 (19. h3 $14 Rad8 20. Nb4) 19... Nxc5 $15 20. Bxc5 Rad8 21. Be3 {[#]} (21. h3 $15 Bd1+ 22. Rxd1 Rxd1 23. Bxe7) 21... Bd1+ $1 $17 22. Kc1 (22. Rxd1 $142 Rxd1 23. Bxa7) 22... Ba4 {[%csl Ga4,Gd8][%cal Rd7d1]} 23. Rd2 $2 {[%mdl 8192]} (23. b3 $17 Rd1+ 24. Kb2) 23... Rxd2 $19 24. Bxd2 {[#]} Bh6 $1 {[%mdl 512] Accuracy: White = 42%, Black = 73%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.17"]
[White "Lopez Azambuja, Nicolas"]
[Black "Soto, Nicolas"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2310"]
[BlackElo "2002"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,65,54,5,108,110,114,118,206,201,409,388,372,274,238,0,482,270,387,365,806,800,728,474,804,777,775,719,587,367,1173,1115,1118,1036,1838,1652,3488,5850,3559,3087,2311,1891,1735,1647]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 Ne7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 dxc3 11. f4 Nbc6 12. Qd3 Bd7 13. Rb1 Rc8 {C18: French: 3 Nc3 Bb4: Main line: 7 h4 and 7 Qg4.} (13... d4 $11 {keeps the balance.}) 14. h4 $16 ({Of course not} 14. Nxc3 $6 Nxe5 15. fxe5 Qxc3+ 16. Qxc3 Rxc3 $11) 14... Nf5 15. h5 {[#]} Na5 $146 (15... Kf8 $16 {was necessary.}) ({Predecessor:} 15... a6 16. h6 Rh8 17. h7 Na5 18. Nd4 Qc4 19. Nxf5 exf5 20. Rb6 Qxd3 21. Bxd3 Rc6 {1-0 (37) Baklan,V (2609)-Kononenko,T (2371) Cappelle-la-Grande 2002}) 16. h6 $18 Qd8 $2 {[#]} (16... Rh8 17. h7 b6) 17. g4 Nh4 18. Qh7 Kf8 19. Qd3 $2 (19. a4 $18 {Ba3+ is the strong threat.} Qe7 20. Nd4) 19... Ng6 $2 {[%mdl 8192]} (19... Ke8 $1 $11 {and Black has nothing to worry.} 20. Qh3 Ng6) 20. Nd4 (20. h7 $142 Rh8 21. Qh3 (21. Nxc3 Qc7 $18)) 20... Qc7 (20... Ke8 $142 21. h7 Rh8) 21. Qe3 Nc4 $2 {[#]} (21... Nc6 22. Nb5 Qb6 23. Qxb6 axb6) 22. Bxc4 dxc4 23. a4 b6 (23... Ke8 $142 24. Ba3 Qa5) 24. Ba3+ Ke8 25. Bd6 Qb7 26. Rh2 Ne7 $2 (26... Nf8 27. h7 Nxh7 28. Rxh7 Qg2) 27. h7 {White is clearly winning.} Rh8 28. f5 exf5 29. Bxe7 Kxe7 30. Qg5+ Kf8 31. Qh6+ Ke8 32. Qg7 Qe4+ 33. Ne2 {Accuracy: White = 66%, Black = 23%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.18"]
[White "Montanu, Dan-Vladimir"]
[Black "Contin, Daniel"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "1983"]
[BlackElo "2267"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,75,-20,12,1,18,9,8,-10,65,-47,-45,-37,-44,-39,-48,-39,-44,-45,-47,-47,-14,-30,-16,-75,-60,-81,-53,-123,-120,-96,0,0,17,-19,0,0,12,0,90,78,80,82,76,8,96,-9,-5,-27,-37,-103,-35,-88,-104,-183,-172,-204,-204,-174,-187,-29993,-12231,-1954,-1241,-29996,-29995,-29995,-29996,-29999]} 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c3 g6 6. Qb3 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} Qc8 7. dxc5 bxc5 {[#]} 8. Bg5 $146 {The position is equal.} ({Predecessor:} 8. O-O c4 9. Qa4 Qc6 10. Qxc6 Nxc6 11. Na3 d5 12. Rd1 e6 13. Nb5 O-O-O 14. Ng5 {1-0 (53) Barbascu,M (2096)-Ciobanu,C (2234) Buzias 2002}) 8... Bg7 (8... c4 $11 9. Qb5 Ne4) 9. Bxf6 ({White should try} 9. Ne5 $14 Bxg2 10. Qxf7+ {[%mdl 64] Double Attack} Kd8 11. Rg1 (11. Qxg7 $2 Rg8 $19)) 9... Bxf6 $15 10. Nbd2 d5 11. O-O O-O 12. Rfe1 Nd7 13. Qc2 c4 14. Rac1 Nc5 15. b4 cxb3 16. axb3 (16. Nxb3 $11 Rb8 17. c4) 16... a5 $17 17. Nd4 Qd7 18. e4 (18. b4 $15 axb4 19. cxb4) 18... e5 19. Ne2 Ba6 (19... Bg5 $17 20. Red1 a4) 20. exd5 $11 Nd3 21. Ne4 Bg7 {Strongly threatening ...Rfc8.} 22. c4 Nxe1 23. Rxe1 f5 (23... Qb7 $11) 24. Nc5 $16 Qd6 25. Nxa6 Qxa6 26. Nc3 (26. c5 $16) 26... Rac8 (26... e4 $11) 27. Qa2 (27. Na4 $1 $16) 27... e4 $11 28. Nb5 Qb6 29. Qa3 (29. Rd1 $15) 29... Rc5 (29... f4 $17 {White must now prevent ...fxg3.} 30. Qa2 e3) 30. Bf1 (30. Qa2 $15) 30... f4 $1 $36 {[%mdl 2048] Black is on the roll.} 31. Re2 {[#]} (31. g4 $17 e3 32. Kh1) 31... e3 $1 $19 {[%mdl 512]} 32. gxf4 {[#]} (32. fxe3 f3) 32... exf2+ $1 33. Kg2 {And now Re6 would win.} Rxf4 34. Re6 $2 {[#]} (34. Re8+ $19 Bf8 35. Qb2) 34... Qd8 (34... Qxe6 $142 $1 {[%mdl 512]} 35. dxe6 Rg5+ 36. Kh3 Rf3+ 37. Kh4 Bf6 38. Qf8+ {[%mdl 64] Decoy} Kxf8 39. e7+ Bxe7 40. h3 Rgg3#) 35. Re3 Rxb5 36. cxb5 Qxd5+ {Black mates.} 37. Kh3 Rf3+ {[%mdl 64] Double Attack} 38. Kg4 Qh5# {Accuracy: White = 49%, Black = 68%.} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.19"]
[White "Michailov, Matias"]
[Black "Dotta, Gian Franco"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2262"]
[BlackElo "2000"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,75,16,38,0,0,-18,-8,-17,-10,-11,0,8,0,-14,-20,-14,0,-25,0,0,4,-16,-18,-22,-18,-21,-13,-22,-17,-22,-20,-27,-14,-56,-58,-58,-27,-23,-2,-2,0,-29,-8,-8,-8,-8,-8,-8,-8,-11,-12,-29,-29,-29,-29,-65,-65,-65,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. O-O {8.Be3 is more advanced technology.} Nbd7 9. f3 {B92: Sicilian Najdorf: 6 Be2.} Be7 10. Nd5 Bxd5 11. exd5 b5 12. a4 Qb6+ 13. Kh1 {Hoping for axb5.} O-O {[#]} 14. axb5 $146 ({Predecessor:} 14. Qd3 b4 15. Rd1 Rfc8 16. Bg5 Qc7 17. Bxf6 Bxf6 18. Rac1 Bg5 19. Nd2 Nc5 20. Qf5 Bxd2 21. Rxd2 {0-1 (36) Ehlers,M (1958)-Zuferi,E (1853) Oberhof 2010}) 14... axb5 15. Rxa8 Rxa8 16. Qd3 Nc5 17. Nxc5 Qxc5 18. Qxb5 Qxc2 19. Bd3 Qc7 20. Bg5 Rc8 21. b4 Nxd5 {[#] And now ...Nc3 would win.} 22. Qxd5 Bxg5 23. g3 Qc6 24. Be4 Qxd5 25. Bxd5 $15 {[%mdl 4096] Endgame KRB-KRB} Rc1 26. Kg2 Rxf1 27. Kxf1 $11 {KB-KB} Be3 28. h4 Kf8 29. Ke2 Bg1 30. h5 Ke7 31. g4 g6 32. hxg6 fxg6 33. g5 Bh2 34. b5 Bf4 35. b6 {[#] b7 would kill now.} Kd7 36. Bg8 h6 (36... Kc6 $15) 37. gxh6 Bxh6 38. Bd5 {Accuracy: White = 84%, Black = 86%.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.20"]
[White "Durante, Aurelio"]
[Black "Amura, Claudia"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "1955"]
[BlackElo "2245"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,78,29,35,33,-4,0,0,0,0,0,0,0,0,0,-37,-27,-49,-24,-32,-29,-25,-26,-30,-23,-13,-29,-4,-8,-13,-8,-24,-18,-18,-11,-18,-18,-18,0,0,0,4,108,108,105,112,108,80,150,88,92,81,89,71,88,83,76,66,131,108,107,54,122,107,101,0,0,0,0,0,7]} 1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. d4 Bf5 6. Be3 Nf6 {B22: Sicilian: 2 c3.} 7. h3 e6 8. Na3 cxd4 9. Nb5 $1 {[%cal Rb5c7] Nc7+ is the strong threat.} O-O-O {[#]} 10. Nbxd4 $146 ({Predecessor:} 10. Nfxd4 Nxd4 11. Qxd4 Qxd4 12. Nxd4 Be4 13. f3 Bg6 14. Bg5 Bc5 15. Nb3 Bb6 16. c4 {0-1 (58) Ramirez,M (1994)-Madl,I (2347) Tromsoe 2014}) 10... Bc5 11. Qa4 Nxd4 $1 12. Nxd4 (12. cxd4 $5 {[%cal Ra1c1]} Bb6 13. Bc4 Qa5+ 14. Qxa5 Bxa5+ 15. Ke2 $11) 12... Bg6 13. Rd1 e5 (13... Bb6 {is more complex.} 14. Qc4+ Kb8 15. Qxd5 Nxd5 16. Bc1 e5) 14. Nf5 Qxd1+ 15. Qxd1 Rxd1+ 16. Kxd1 Bxe3 17. Nxe3 Ne4 18. Ke1 Nc5 19. h4 h5 20. Bc4 Nd3+ 21. Bxd3 $1 Bxd3 $11 {[%mdl 4096] Endgame KRB-KRN} 22. f3 Rd8 23. Kf2 g6 24. Rd1 e4 25. g4 Rf8 (25... exf3 $11 {keeps the balance.} 26. gxh5 gxh5) 26. gxh5 $16 gxh5 27. Nd5 f5 28. Nf4 Bc4 (28... Bc2 $142 29. Rc1 Ba4) 29. fxe4 (29. b3 $142 Bf7 30. Rd6) 29... fxe4 30. Ke3 $1 {[%csl LRe4,LRh5]} Rg8 31. b3 Bf7 32. Kxe4 Rg4 33. Rh1 Bd5+ (33... b5 $14) 34. Kxd5 Rxf4 {KR-KR} 35. Rh2 (35. Re1 $16) 35... Kd7 {[#]} ({Black should play} 35... Kc7 $14) 36. Ke5 $1 {[%cal Re5f4]} Rg4 {[#]} 37. c4 (37. Rd2+ $1 $16 Kc7 38. Rd4) 37... Kc6 $11 {The position is equal.} 38. Kf5 Kc5 39. Ke5 a6 {Accuracy: White = 79%, Black = 78%.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.21"]
[White "Larrea, Manuel"]
[Black "Siddeley, Hugh"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2243"]
[BlackElo "1974"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,63,54,-10,0,0,0,0,0,0,0,0,0,0,10,0,17,0,75,67,137,104,170,167,200,204,197,200,175,175,166,97,120,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Na6 {[%cal Bb8a6,Ba6b4,Bb4d3][%mdl 32]} 7. O-O c5 8. d5 Bg4 9. Qe1 (9. Be2 $14) 9... Bxf3 {B09: Pirc Defence: Austrian Attack.} 10. Rxf3 Nb4 11. a3 Nxd3 12. cxd3 e6 13. f5 exf5 14. exf5 Ng4 {[#]} 15. Qg3 $146 ({Predecessor:} 15. fxg6 hxg6 16. Ne4 Re8 17. Qg3 f5 18. Bg5 Qd7 19. Nc3 Be5 20. Bf4 Qg7 21. Raf1 {0-1 (28) Cornelisse,J (2118)-Nijboer,F (2586) Bussum 2004}) 15... Ne5 16. Rf1 Kh8 (16... c4 $11) 17. Ne4 $16 {[#] Threatens to win with f6.} gxf5 (17... f6 $14) 18. Rxf5 f6 (18... Qb6 $16 {was worth a try.}) 19. Bd2 $18 Qe7 20. Bc3 Qf7 21. Bxe5 ({Stronger than} 21. Nxd6 Qd7 $11) 21... dxe5 22. d6 Qd5 23. Raf1 (23. Rh5 $18) 23... c4 24. Qh4 ({Better is} 24. Rd1 $16) 24... cxd3 $11 {The position is equal.} 25. Rh5 d2 26. Rxh7+ Kg8 27. Rxg7+ Kxg7 28. Qg4+ Kh8 29. Qh4+ Kg7 30. Qg4+ Kh8 31. Qh4+ Kg7 32. Qg4+ {Accuracy: White = 87%, Black = 73%.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.22"]
[White "Pinero, Ismael"]
[Black "Carbone, Diego"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "1914"]
[BlackElo "2239"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,39,18,33,-14,-18,-112,-110,-123,-28,-36,-18,-13,-21,-28,0,0,229,237,659,666,452,425,411,405,799,760]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. O-O b5 9. Re1 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2.} Bb7 10. Nd5 (10. Qd2 $11) 10... exd5 $17 11. exd5 {[#]Black is better.} Ne7 $146 ({Better is} 11... Ne5 $1 $17 12. f4 Nxd3 {[%mdl 64] Discovered Attack} 13. cxd3 Nxd5) ({Predecessor:} 11... Ne5 12. Bf4 d6 13. c4 bxc4 14. Qa4+ Qd7 15. Qxc4 Bxd5 16. Qb4 Be6 17. Bxe5 dxe5 {0-1 (35) Reis,N (1919)-Smit,J (2094) Bad Homburg 2009}) 12. c4 $11 bxc4 13. Rc1 $1 Bxd5 {...Qb7 is the strong threat.} 14. Bxc4 Qb7 15. Bxd5 $1 Nfxd5 $2 (15... Nexd5 $11 16. Bg5+ Kd8) 16. Bg5 $18 {Threatens to win with Nf5.} Rd8 $2 {[#]} (16... g6) 17. Nf5 $1 {[%cal Rf5d6]} d6 18. Bxe7 Bxe7 19. Qf3 Qa8 (19... Kf8 $142 20. Nxe7 Qxe7 21. Rxe7 Nxe7) 20. Nxg7+ {[%mdl 32768] Accuracy: White = 72%, Black = 28%. . An unexpected result.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.23"]
[White "Muniz, Rafael"]
[Black "Rodriguez Farias, Eduardo"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2232"]
[BlackElo "1963"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,59,0,0,17,23,16,0,37,37,43,35,43,44,45,8,43,25,19,0,8,-16,14,13,27,11,48,45,36,0,0,0,0,0,12,-16,62,56,989,985,963,977,976,971,989,960]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. Nb3 d6 8. Bg2 O-O 9. O-O a6 {B70: Sicilian Dragon: 6 g3 and 6 Be2 (without a later Be3).} 10. h3 Qc7 11. Bg5 Be6 {The position is equal.} 12. Nd5 Bxd5 13. exd5 {[#]} Na5 $146 ({Predecessor:} 13... Ne5 14. Qe2 Rac8 15. c3 h6 16. Be3 Kh7 17. Rae1 Qc4 18. Bd4 Ng8 19. Qd1 Qd3 {1-0 (34) Dourerassou,J (2469)-Ditmas,H (1993) London 2014}) 14. Nxa5 Qxa5 15. Re1 Rfe8 16. c3 e5 17. Qd2 Rac8 18. a3 Qb5 19. Bf1 Qa4 20. c4 b5 21. Bxf6 Bxf6 22. cxb5 axb5 23. Rac1 e4 24. Rc6 $36 {[%mdl 2048] White has good play.} Be5 25. Rec1 e3 (25... Rb8 $11) 26. Qxe3 $14 Bd4 $2 {[%mdl 8192] [#]} (26... Ra8 $14) 27. Rxc8 $18 {White is clearly winning.} Bxe3 28. Rxe8+ Kg7 29. Rxe3 Qd4 30. Rc7 {Accuracy: White = 81%, Black = 49%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.24"]
[White "Rodriguez Buela, Martin"]
[Black "Shtemler, Lavi"]
[Result "0-1"]
[ECO "E00"]
[BlackElo "2199"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,-23,-20,-26,-20,-27,-24,-34,0,-24,-23,-49,-45,-58,-57,-79,-78,-132,-143,-137,-83,-145,-141,-313,-302,-306,-170,-181,-143,-143,-137,-134,-132,-113,-87,-112,-76,-150,-45,-48,-37,-49,-38,-56,-50,-81,-14,-20,-17,-145,-141,-147,-142,-388,-390,-386,-112,-110,-76,-1047,-1015,-29992,-29992]} 1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Bxb4 axb4 5. e4 d6 6. Nf3 {A40: Unusual replies to 1 d4.} Nf6 7. Nbd2 O-O {[#]} 8. Be2 $146 {Black has an edge.} ({Predecessor:} 8. Qc2 Qe7 9. Be2 e5 10. dxe5 dxe5 11. O-O c5 12. Rfe1 Nc6 13. Nb3 b6 14. Nfd2 {0-1 (45) Sherwin,J (2344)-Atalik,S (2551) Kallithea 2002}) 8... Nbd7 9. O-O e5 10. dxe5 dxe5 11. Qc2 Qe7 12. Rfd1 Nc5 13. h3 (13. Ne1 $142) 13... b6 $17 14. Ne1 h6 ({Better is} 14... Bb7 {[%cal Rf6e4]} 15. f3 Nh5) 15. f3 ({White should play} 15. Nd3) 15... Nh5 16. Nd3 $2 (16. Bf1 $17) 16... Bxh3 {Played: Qe7-g5} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.25"]
[White "El Ters, Antouan"]
[Black "Aguilar Samper, Valentin"]
[Result "1/2-1/2"]
[ECO "C15"]
[WhiteElo "2189"]
[BlackElo "1946"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,72,28,27,27,30,20,10,10,7,8,8,12,11,9,0,0,-2,0,-3,0,-20,-18,-158,-29,-22,0,0,27,16,35,33,36,39,31,18,39,11,29,7,18,0,4,0,14,21,19,10,19,10,10,10,197,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Nf3 Ne7 6. Bd3 O-O {C01: French: Exchange Variation.} 7. O-O Bf5 8. Bg5 {Threatens to win with Bxf5.} f6 9. Bf4 Nbc6 10. Nb5 {[#]} Ba5 $146 ({Predecessor:} 10... Bxd3 11. Qxd3 Ba5 12. c3 a6 13. Na3 Qd7 14. Rae1 Rae8 15. Nc2 Qf5 16. Qd2 Ng6 {1-0 (26) Starostits,I (2470)-Goris,T (2021) Bad Woerishofen 2013}) 11. c3 Qd7 12. Qc2 Bxd3 13. Qxd3 Ng6 14. Bg3 Nce7 15. h3 c6 16. Nd6 {[#]} (16. Na3 $11) 16... b5 ({Worse is} 16... Bc7 17. Nxb7 Bxg3 18. Nc5 $14) (16... f5 $1 $17 {Hoping for ...f4.} 17. Be5 Bc7 18. Nxb7 Bxe5 {[%mdl 64] Discovered Attack}) 17. Rfe1 Bc7 18. Nf5 Nxf5 19. Bxc7 Rfe8 20. Bh2 Nd6 21. Bxd6 Qxd6 22. a4 b4 23. Qa6 bxc3 24. bxc3 Nf4 25. Rab1 Qd7 26. Kh2 Rxe1 (26... Reb8 {is more complex.} 27. Qf1 Rxb1 28. Rxb1 Re8 29. Qa6 Re7) 27. Nxe1 Rc8 28. Rb7 Rc7 29. Rxc7 Qxc7 30. g3 Qe7 $2 (30... Ne6 $11) 31. Nc2 $2 ({Weaker is} 31. Qxc6 Qxe1 32. Qc8+ Kf7 $11) (31. Nf3 $18) 31... Qe2 $1 $11 {[%cal Re2f2][%mdl 64] Double Attack. The position is equal.} 32. Qc8+ {[#]} Kf7 $1 {[%mdl 512]} 33. Qd7+ {[#]} Kg6 $1 {[%mdl 512]} 34. Qg4+ Kf7 35. Qd7+ {[#]} Kg6 $1 {[%mdl 512]} 36. Qg4+ Kf7 {Accuracy: White = 83%, Black = 82%.} 1/2-1/2

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.26"]
[White "Coppola, Claudio"]
[Black "Alvarez Ramirez, Miguel Angel"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2314"]
[BlackElo "2282"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,119,22,24,10,26,-8,21,25,8,17,14,8,18,12,32,24,35,0,0,0,104,0,36,33,36,28,82,41,35,20,62,50,41,47,145,67,82,75,103,72,370,366,360,351,450,438,462,395,394,387,592,586,822,809,791,737,716,593,696,670,706,699,704,664,871,961,1177,1113,976,1127,1143,1088,1123,1068,1126,1124,1095,1056,1046,0,0,0,1034,994,919,891,2008,2004,1928,1872,1725,1687,29978,29979,29979,29980,29984,29985,29985,29986,29986,29987,29988,29989,29991,29990]} 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Qb6 6. Bg2 Bc5 7. e3 Nc6 8. Nb3 Bb4+ 9. Bd2 {A32: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6.} Ne5 10. Qc2 O-O {[#]} 11. Bxb4 $146 {The position is equal.} ({Predecessor:} 11. O-O Bxd2 12. c5 Qc7 13. Qxd2 Rb8 14. Nc3 b5 15. f4 Nc4 16. Qd4 e5 17. Qd3 {0-1 (38) Telea,S (2154)-Turlea,C (1995) Ploiesti 2007}) 11... Qxb4+ {[%mdl 64] Double Attack} 12. N1d2 $1 d5 {[%cal Rd5c4]} 13. cxd5 exd5 14. O-O Bd7 15. Qc5 Qg4 16. Qd4 Qh5 17. Rfc1 Rac8 (17... Rfe8 $11) 18. Nc5 (18. Rxc8 $1 $16 Rxc8 19. Qxa7) 18... Bc6 19. Nd3 $36 {[%mdl 2048] White has the initiative.} Nxd3 20. Qxd3 Rfe8 (20... Ng4 $11 {remains equal.} 21. Nf3 d4) 21. b4 a6 22. a4 Ng4 23. h3 Ne5 24. Qd4 Bd7 (24... Qe2 $14) 25. g4 ({Stronger than} 25. Bxd5 Rcd8 $15) (25. Qxd5 Bc6 $11) (25. Rxc8 $1 $16 Bxc8 26. Qxd5) 25... Qh4 {[#]} 26. Rxc8 $1 ({Not} 26. Qxd5 Bc6 $17) ({Of course not} 26. Bxd5 $6 Qxh3 27. Bg2 Qxg4 $11) 26... Bxc8 27. Qxd5 Bxg4 $2 {[%mdl 8192]} (27... h5 $16 {was necessary.}) 28. hxg4 $18 Nxg4 {[#]} 29. Qf5 $1 Qh2+ 30. Kf1 h5 31. Nf3 Qc7 32. Qc5 Nh2+ (32... Qxc5 {was called for.} 33. bxc5 Rc8) 33. Ke2 Qb8 34. Qxh5 Nxf3 35. Bxf3 Qc8 36. Qc5 Qe6 37. Rd1 Rc8 38. Qd5 Rc2+ 39. Rd2 Rxd2+ 40. Kxd2 Qf6 41. Qxb7 Qb2+ 42. Ke1 Qc1+ 43. Bd1 Qc3+ 44. Kf1 Qd3+ 45. Be2 Qb1+ 46. Kg2 Qg6+ 47. Kf1 Qb1+ 48. Kg2 Qg6+ 49. Kh3 Qh6+ 50. Kg3 g5 51. Qc8+ Kg7 52. Qc3+ Kg8 53. Qd4 Kh7 54. b5 {White mates.} axb5 55. axb5 {[%cal Ba4b5,Bb5b6][%mdl 32]} Qf8 56. Bd3+ Kg8 57. b6 Qb8+ 58. Kg2 Qc8 59. Qe4 f5 60. Qc4+ {Accuracy: White = 80%, Black = 39%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.27"]
[White "Benoit, Rodrigo"]
[Black "Vieira, Alexandre Letizio"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2170"]
[BlackElo "1722"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,63,39,42,0,29,0,25,-1,36,46,53,72,73,73,82,75,81,69,73,28,37,22,28,22,28,27,27,34,110,65,123,55,78,70,202,192,326,308,452,457,579,382,832,851,789,789,2169,1836]} 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nf6 5. O-O O-O 6. d4 cxd4 7. Nxd4 Nc6 8. Nc2 d6 9. Nc3 a6 10. h3 {A38: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6.} Rb8 11. Rb1 Bd7 {[#]} 12. e4 $146 {White has an edge.} ({Predecessor:} 12. a4 Na5 13. b3 Qc8 14. Nd5 Nxd5 15. Qxd5 b5 16. Bd2 Bc6 17. Qg5 Bf6 18. Qe3 Bxg2 19. Kxg2 {½-½ (61) Luksza,A (2069)-Libersan,T (1996) Montreal 2019}) 12... Ne5 13. b3 (13. c5 $5) 13... Qc8 14. f4 Nc6 15. Kh2 $1 Ng4+ {[%mdl 64] Discovered Attack} 16. hxg4 Bxc3 17. g5 b5 18. Qd3 Bg7 19. Bd2 bxc4 20. bxc4 Rxb1 21. Rxb1 Qc7 22. Ne3 e6 (22... Qa7 $14) 23. Qa3 Rb8 {[#]} ({Better is} 23... f6 $14) 24. Rxb8+ (24. Rd1 $1 $16) 24... Qxb8 $14 25. Qxa6 Qb2 (25... h5 $14) 26. Qa8+ $18 Bf8 {[#]} (26... Qb8 $142 27. Qxb8+ Nxb8) 27. Ng4 $1 {[%cal Rg4f6]} Qb8 (27... Kg7 {was necessary.} 28. Nf6 Nb8) 28. Nf6+ Kg7 29. Qa4 Qc7 $2 (29... Qc8 30. e5 Nxe5) 30. Bc3 {And now Ne8+ would win.White is clearly winning.} e5 31. Bh3 exf4 32. Nxd7+ {Accuracy: White = 67%, Black = 32%.} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.28"]
[White "Moccero, Eduardo"]
[Black "Labrador Avendano, Angie Jhoana"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1926"]
[BlackElo "1638"]
[Annotator "NA RC"]
[PlyCount "65"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 d5 {[%emt 0:03:00]} 2. Nf3 {[%emt 0:00:10]} Nf6 {[%emt 0:00:33]} 3. e3 {[%emt 0:00:32]} Bg4 {[%emt 0:02:28]} 4. h3 {[%emt 0:00:43]} Bh5 {[%emt 0:00:18]} 5. g4 {[%emt 0:00:10]} Bg6 {[%emt 0:00:20]} 6. Ne5 {[%emt 0:00:59] D04: Colle System.} Nbd7 {[%emt 0:02:10]} 7. h4 {[%emt 0:00:11]} h5 {[%emt 0:16:49]} (7... e6 $142) 8. Nxg6 {[%emt 0:01:06]} fxg6 {[%emt 0:00:07]} 9. Bd3 {[%emt 0:01:27]} Kf7 {[%emt 0:15:38]} 10. g5 {[%emt 0:01:56]} Ne4 {[%emt 0:03:16]} 11. Qf3+ {[%emt 0:01:20]} Kg8 {[%emt 0:03:34]} 12. Nd2 {[%emt 0:02:26] [#]} Qe8 $146 {[%emt 0:24:24]} ({Predecessor:} 12... e5 13. Nxe4 dxe4 14. Qxe4 Qe8 15. Qxg6 Qxg6 16. Bxg6 Bd6 17. Bd2 exd4 18. exd4 Nf8 {1-0 (42) Liesmann,K (2006)-Ringwelski,M (1998) Germany 2017}) 13. Nxe4 {[%emt 0:01:44]} dxe4 {[%emt 0:00:09]} 14. Qxe4 {[%emt 0:03:01]} c6 {[%emt 0:00:36]} 15. Qxg6 {[%emt 0:05:54]} Qxg6 {[%emt 0:03:29]} 16. Bxg6 {[%emt 0:00:16]} e6 {[%emt 0:00:35]} 17. Bd2 {[%emt 0:00:53]} Bd6 {[%emt 0:01:50]} 18. O-O-O {[%emt 0:01:15]} Kf8 {[%emt 0:00:23]} 19. f4 {[%emt 0:01:03]} Ke7 {[%emt 0:00:57]} 20. Rhf1 {[%emt 0:02:38]} Nf8 {[%emt 0:01:57]} 21. Bd3 {[%emt 0:00:23]} g6 {[%emt 0:00:27]} 22. Rf3 $18 {[%emt 0:03:32]} Rd8 {[%emt 0:05:55]} 23. e4 Bc7 24. f5 {[%emt 0:04:26]} Rg8 {[%emt 0:03:15]} 25. Bb4+ {[%emt 0:04:01]} Bd6 {[%emt 0:04:50]} 26. Bc3 {[%emt 0:00:30]} Bc7 {[%emt 0:04:35]} 27. fxe6 {[%emt 0:01:44]} Nxe6 {[%emt 0:00:15]} 28. Bc4 {[%emt 0:05:11]} Rgf8 29. Rdf1 Bf4+ {[%emt 0:02:02]} 30. Kb1 {[%emt 0:02:33]} Nxd4 {[%emt 0:00:23]} 31. Rxf4 {[%emt 0:00:37]} Rxf4 {[%emt 0:00:05]} 32. Rxf4 {[%emt 0:02:07]} Nb5 {[%emt 0:00:50]} 33. Bf6+ {[%emt 0:00:09]} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.29"]
[White "Santiso, Daniel"]
[Black "Cardozo, Lucas"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1900"]
[BlackElo "2052"]
[Annotator "NA RC"]
[PlyCount "65"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:02:14]} 2. Bf4 {[%emt 0:00:37]} e6 {[%emt 0:01:25]} 3. e3 {[%emt 0:01:14]} Nf6 {[%emt 0:03:30]} 4. Bd3 {[%emt 0:02:13]} b6 {[%emt 0:21:52]} 5. c3 {[%emt 0:12:09]} Ba6 {[%emt 0:07:32]} 6. Bxa6 {[%emt 0:02:00] [#] D00: 1 d4 d5: Unusual lines.} Be7 $146 {[%emt 0:13:24]} ({Predecessor:} 6... Nxa6 7. Qa4+ c6 8. Qxa6 Qd7 9. Qe2 Be7 10. Nf3 O-O 11. Ne5 Qc8 12. Nd2 c5 13. dxc5 bxc5 {1-0 (37) Ristoja,A (1558)-Cassidy,S (1599) Mali Losinj 2019}) 7. Bb7 {[%emt 0:00:33]} Nbd7 {[%emt 0:06:43]} 8. Bxa8 {[%emt 0:00:17]} Qxa8 {[%emt 0:00:09]} 9. Bxc7 {[%emt 0:00:33]} Qc6 {[%emt 0:00:14]} 10. Be5 {[%emt 0:02:31]} Qb5 {[%emt 0:14:16]} 11. Qe2 {[%emt 0:00:48]} Qc6 {[%emt 0:02:27]} 12. Nd2 {[%emt 0:01:42]} O-O {[%emt 0:02:29]} 13. Ngf3 {[%emt 0:02:05]} Ne4 {[%emt 0:03:12]} 14. Nxe4 {[%emt 0:03:03]} dxe4 {[%emt 0:00:08]} 15. Nd2 {[%emt 0:00:08]} Nxe5 {[%emt 0:05:12]} 16. dxe5 {[%emt 0:00:11]} Qd5 {[%emt 0:00:13]} 17. Qc4 {[%emt 0:03:27]} Qxe5 {[%emt 0:04:31]} 18. Qxe4 {[%emt 0:00:52]} Qb5 {[%emt 0:00:14]} 19. Qc2 {[%emt 0:07:03]} Rd8 {[%emt 0:03:24]} 20. Rd1 {[%emt 0:01:59]} Qd5 {[%emt 0:03:06]} 21. Nf3 {[%emt 0:00:46]} Qxa2 {[%emt 0:00:22]} 22. Rxd8+ {[%emt 0:00:10]} Bxd8 {[%emt 0:00:10]} 23. O-O {[%emt 0:00:05]} Bf6 {[%emt 0:01:16]} 24. Rd1 {[%emt 0:00:55]} g6 {[%emt 0:01:02]} 25. h3 {[%emt 0:00:26]} Kg7 {[%emt 0:00:17]} 26. Nd2 {[%emt 0:01:12]} b5 {[%emt 0:01:33]} 27. Ne4 {[%emt 0:00:25]} Be7 {[%emt 0:00:28]} 28. Rd7 {[%emt 0:00:53]} Ba3 {[%emt 0:01:42]} 29. Qd2 $18 {[%emt 0:04:06]} Qb1+ {[%emt 0:00:30]} 30. Kh2 {[%emt 0:00:23]} Qxe4 {[%emt 0:00:13]} 31. bxa3 {[%emt 0:00:09]} Qa4 {[%emt 0:00:49]} 32. Qd4+ {[%emt 0:00:16]} Qxd4 {[%emt 0:00:05]} 33. exd4 {[%emt 0:00:15]} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.30"]
[White "Reolon, Victor"]
[Black "Avedisian, Alexander"]
[Result "0-1"]
[ECO "D71"]
[WhiteElo "1644"]
[BlackElo "1892"]
[Annotator "NA RC"]
[PlyCount "104"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:00:31]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:19]} g6 {[%emt 0:00:00]} 3. g3 {[%emt 0:00:45]} Bg7 {[%emt 0:00:02]} 4. Bg2 {[%emt 0:00:08]} O-O {[%emt 0:00:16]} 5. Nf3 {[%emt 0:00:26]} d6 {[%emt 0:00:16]} 6. b3 {[%emt 0:01:51]} c5 {[%emt 0:00:36]} 7. Bb2 {[%emt 0:01:08]} Nc6 {[%emt 0:00:34] 7...Qa5+ is a critical line.} 8. d5 {[%emt 0:04:16] E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3.} Na5 {[%emt 0:04:50]} 9. Nbd2 {[%emt 0:05:18] [#]} b5 $146 {[%emt 0:02:31]} ({Predecessor:} 9... a6 10. O-O Rb8 11. Re1 b5 12. Rc1 Bd7 13. e4 e5 14. dxe6 Bxe6 15. e5 Ng4 16. cxb5 axb5 {1-0 (31) Bispo,L (2223)-Chang,S (2098) Guarapari 2017}) 10. a3 {[%emt 0:10:10]} ({White should try} 10. Bc3 $14) 10... Rb8 {[%emt 0:03:24]} 11. cxb5 {[%emt 0:04:49]} Rxb5 {[%emt 0:07:49]} 12. O-O {[%emt 0:00:40]} Nxd5 {[%emt 0:02:09]} 13. Bxg7 {[%emt 0:02:43]} Kxg7 {[%emt 0:00:09]} 14. Qc2 {[%emt 0:09:41]} Kg8 {[%emt 0:07:55]} 15. Rfb1 {[%emt 0:06:37]} Ba6 {[%emt 0:07:17]} 16. Ng5 {[%emt 0:02:35]} e6 {[%emt 0:10:10]} 17. h4 {[%emt 0:02:00]} Nc6 {[%emt 0:02:31]} 18. e3 {[%emt 0:05:07]} Ne5 {[%emt 0:03:25]} 19. Nc4 {[%emt 0:05:37]} Ng4 {[%emt 0:09:39]} 20. Bh3 {[%emt 0:05:51]} Ngf6 {[%emt 0:04:51]} 21. Rd1 {[%emt 0:02:43]} Ne8 $2 {[%emt 0:16:47] [#]} (21... Rb8 $1 $11 {and Black stays safe.}) 22. Nxe6 $1 {[%emt 0:10:54]} Nxe3 {[%emt 0:00:22]} 23. Nxe3 {[%emt 0:05:27]} ({Stronger than} 23. Nxd8 Nxc2 24. Rab1 Nd4 $17) (23. fxe3 fxe6 24. Bxe6+ Kg7 $11) 23... fxe6 {[%emt 0:00:14]} 24. Bxe6+ {[%emt 0:00:18]} Kg7 {[%emt 0:00:44] [#]} 25. Ng4 {[%emt 0:03:01]} ({Not} 25. a4 Rb8 $14) (25. Bc4 $1 $18) 25... Rb6 {[%emt 0:02:41] [#]} (25... h5 $16) 26. Qd2 {[%emt 0:00:42]} ({Better is} 26. b4 $1 $18 {[%cal Rb4c5]} c4 27. Qb2+ (27. Bxc4 Nf6 $16) 27... Nf6 28. Rac1) 26... Qe7 {[%emt 0:02:12]} (26... Kh8 $16) 27. Re1 {[%emt 0:00:10]} Kh8 {[%emt 0:02:07]} 28. Bd5 {[%emt 0:01:43]} Qg7 {[%emt 0:00:34]} 29. Rab1 {[%emt 0:01:12]} Bc8 {[%emt 0:01:06]} 30. Qe2 {[%emt 0:02:34]} Nf6 {[%emt 0:00:46]} 31. Nxf6 {[%emt 0:00:26]} Qxf6 {[%emt 0:00:09]} 32. Qb2 {[%emt 0:00:33]} Qxb2 {[%emt 0:00:52]} 33. Rxb2 {[%emt 0:00:01]} Bb7 {[%emt 0:01:04]} 34. Bxb7 {[%emt 0:00:55]} Rxb7 {[%emt 0:00:05]} 35. Re6 {[%emt 0:00:49]} Rd8 {[%emt 0:01:29]} 36. Re3 {[%emt 0:02:33]} c4 {[%emt 0:00:47]} 37. b4 {[%emt 0:01:05]} d5 {[%emt 0:00:24]} 38. Rbe2 {[%emt 0:00:13]} d4 {[%emt 0:01:10]} 39. Rd2 {[%emt 0:00:45]} Kg7 {[%emt 0:00:23]} 40. Re4 {[%emt 0:00:11]} Rbd7 {[%emt 0:00:39]} 41. Kf1 {[%emt 0:00:32]} c3 {[%emt 0:01:15]} 42. Rd3 {[%emt 0:01:12]} Rc8 {[%emt 0:02:04]} 43. Re1 {[%emt 0:00:33]} Kf6 {[%emt 0:01:22]} 44. Rf3+ {[%emt 0:00:32]} Kg7 {[%emt 0:00:16]} 45. Rd3 {[%emt 0:00:09]} Rc6 {[%emt 0:01:19]} 46. Rc1 {[%emt 0:01:11] [#]} Kf6 $19 {[%emt 0:00:29]} 47. Re1 {[%emt 0:00:16]} Kf5 {[%emt 0:01:22]} 48. Rf3+ {[%emt 0:00:34]} Kg4 {[%emt 0:00:55]} 49. Kg2 {[%emt 0:00:30]} c2 {[%emt 0:01:20]} 50. Rf4+ {[%emt 0:01:55]} Kh5 {[%emt 0:00:08]} 51. g4+ {[%emt 0:00:39]} Kh6 {[%emt 0:00:14]} 52. Rc1 {[%emt 0:00:28]} d3 {[%emt 0:00:12]} 0-1

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.31"]
[White "Pustilnik, Iber"]
[Black "Vassallo, Julio"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "1892"]
[BlackElo "1630"]
[Annotator "NA RC"]
[PlyCount "53"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. d4 {[%emt 0:00:00]} e6 {[%emt 0:00:11]} 3. c4 {[%emt 0:00:00]} d5 {[%emt 0:00:35]} 4. g3 {[%emt 0:00:00]} Be7 {[%emt 0:00:59]} 5. Bg2 {[%emt 0:00:00]} O-O {[%emt 0:00:29]} 6. O-O {[%emt 0:01:01]} dxc4 {[%emt 0:00:35]} 7. a4 {[%emt 0:01:11] [#] E05: Open Catalan: 5 Nf3 Be7.} a5 $146 {[%emt 0:05:43]} ({Predecessor:} 7... Nc6 8. a5 Rb8 9. Qc2 Nxd4 10. Nxd4 Qxd4 11. Rd1 Qc5 12. Be3 Qb4 13. Ra4 Qb3 14. Rxc4 Qxc2 15. Rxc2 {½-½ (24) Caruana,F (2822)-Dominguez Perez,L (2739) Saint Louis 2018}) 8. Qc2 {[%emt 0:04:29]} Na6 {[%emt 0:04:18]} 9. Qxc4 {[%emt 0:02:44]} Rb8 {[%emt 0:05:42]} 10. Nc3 {[%emt 0:04:49]} b6 {[%emt 0:07:55]} 11. Ne5 {[%emt 0:17:05]} Nb4 {[%emt 0:14:49]} 12. Nb5 {[%emt 0:24:20]} Ba6 {[%emt 0:15:25]} 13. Bd2 {[%emt 0:08:17]} Rc8 {[%emt 0:17:19]} 14. Bxb4 Bxb4 {[%emt 0:00:24]} 15. Nc6 {[%emt 0:05:23]} Bxb5 {[%emt 0:06:55]} 16. axb5 {[%emt 0:01:41]} Qd7 {[%emt 0:07:46]} 17. e4 {[%emt 0:11:13]} Rfe8 {[%emt 0:04:16]} 18. Rfd1 {[%emt 0:01:01]} h6 {[%emt 0:03:01]} 19. Rac1 $18 {[%emt 0:01:34]} ({Don't play} 19. Nxb4 $6 axb4 20. Qxb4 Red8 $16) 19... Kh8 {[%emt 0:01:02]} 20. Na7 {[%emt 0:01:59]} c5 {[%emt 0:00:58]} 21. Nxc8 {[%emt 0:00:47]} Qxc8 {[%emt 0:00:11]} 22. d5 {[%emt 0:00:26]} exd5 {[%emt 0:00:31]} 23. exd5 {[%emt 0:00:13]} Qf5 {[%emt 0:01:14]} 24. Qf4 {[%emt 0:05:09]} Qxf4 {[%emt 0:00:39]} 25. gxf4 {[%emt 0:00:07]} Re2 {[%emt 0:00:11]} 26. d6 {[%emt 0:00:23]} Nd7 {[%emt 0:00:43]} 27. Bc6 {[%emt 0:00:31]} 1-0

[Event "IV Copa Marcel Duchamp 2020"]
[Site "Montevideo"]
[Date "2020.02.09"]
[Round "2.32"]
[White "Pelaez, Diego"]
[Black "Belistri, Ubaldo"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "1607"]
[BlackElo "1877"]
[Annotator "NA RC"]
[PlyCount "73"]
[EventDate "2020.02.08"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

{[%evp 8,70,77,53,32767,32767,32767,63,61,32767,50,32767,0,-8,0,0,0,32767,32767,32767,32767,4,9,32767,32767,32767,32767,32767,0,32767,-8,32767,32767,163,170,144,144,32767,32767,160,161,51,47,40,399,160,32767,32767,32767,32767,32767,32767,32767,10,8,8,12,0,0,0,0,0,32767,0,0]} 1. d4 {[%emt 0:02:22]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:27]} c5 {[%emt 0:00:17]} 3. d5 {[%emt 0:00:10]} e6 {[%emt 0:00:33]} 4. Nc3 {[%emt 0:00:16]} exd5 {[%emt 0:00:27]} 5. cxd5 {[%emt 0:00:21]} d6 {[%emt 0:00:25]} 6. e4 {[%emt 0:00:11]} g6 {[%emt 0:00:18]} 7. Nf3 {[%emt 0:01:33]} Bg7 {[%emt 0:00:14]} 8. Bb5+ {[%emt 0:02:13]} Bd7 {[%emt 0:03:16]} 9. Bxd7+ {[%emt 0:06:41]} Nbxd7 {[%emt 0:08:11]} 10. O-O {[%emt 0:00:26]} O-O {[%emt 0:00:26] A70: Modern Benoni: 6 e4 g6 7 Nf3.} 11. Bf4 {[%emt 0:02:57]} Re8 {[%emt 0:02:43]} 12. Re1 {[%emt 0:00:51]} Qb6 {[%emt 0:01:05]} 13. Rb1 {[%emt 0:02:03] [#]} Nh5 $146 {[%emt 0:01:05]} ({Predecessor:} 13... Ng4 14. Nd2 Nge5 15. Qe2 a6 16. Be3 Nf6 17. h3 Qc7 18. f4 Ned7 19. a4 Rab8 {0-1 (54) Straub,N (2316)-Alexandrova,O (2265) Alushta 1999}) 14. Bd2 {[%emt 0:07:09]} Ne5 {[%emt 0:04:40]} 15. Nxe5 {[%emt 0:03:42]} Bxe5 {[%emt 0:00:22]} 16. Qg4 {[%emt 0:05:33]} Qd8 {[%emt 0:06:44]} 17. f4 {[%emt 0:04:14]} Bd4+ {[%emt 0:04:18]} 18. Kh1 {[%emt 0:00:36]} Nf6 {[%emt 0:04:40]} 19. Qf3 {[%emt 0:03:58]} b5 {[%emt 0:03:04]} 20. Nxb5 {[%emt 0:02:50]} Qb6 {[%emt 0:02:33]} 21. Nxd4 {[%emt 0:00:15]} cxd4 {[%emt 0:00:14]} 22. e5 {[%emt 0:01:39]} Nh5 {[%emt 0:03:47]} 23. e6 {[%emt 0:03:09]} f5 {[%emt 0:00:20] [#]} 24. g4 {[%emt 0:11:13]} (24. Red1 $1 $18) 24... fxg4 {[%emt 0:00:45]} 25. Qxg4 {[%emt 0:00:18]} Nf6 $2 {[%emt 0:00:19]} ({Better is} 25... Qb5 $14) 26. Qg2 {[%emt 0:00:30]} (26. Qg5 $18 {and the rest is easy.}) 26... Qb7 {[%emt 0:01:03]} 27. Rg1 {[%emt 0:06:57]} Rac8 {[%emt 0:09:11]} 28. f5 {[%emt 0:06:19]} Rc2 {[%emt 0:02:14]} 29. fxg6 {[%emt 0:01:16]} Qxd5 {[%emt 0:00:22]} 30. gxh7+ {[%emt 0:06:21]} Kxh7 {[%emt 0:01:41]} 31. Qxd5 {[%emt 0:00:37]} Nxd5 {[%emt 0:00:19]} 32. Rg2 {[%emt 0:00:31]} Rxe6 {[%emt 0:00:54]} 33. Rbg1 {[%emt 0:00:29]} Ne3 {[%emt 0:02:42]} 34. Rg7+ {[%emt 0:01:45]} Kh6 {[%emt 0:00:51] [#]} 35. R7g3 $11 {[%emt 0:01:35]} ({White should try} 35. R7g4 $1 $16 {[%cal Rg4h4]} Kh7 36. Rxd4) 35... Kh7 {[%emt 0:02:34]} 36. Rg7+ {[%emt 0:01:05]} Kh6 {[%emt 0:00:21]} 37. R7g3 1/2-1/2

