[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.1"]
[White "Rodriguez Vila, Andres"]
[Black "Hernandez Guerrero, Gilberto"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2486"]
[BlackElo "2533"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,99,23,20,97,95,113,43,52,13,39,30,39,32,27,-7,0,0,0,0,0,0,0,-10,0,-12,13,0,0,0,0,9,10,0,26,10,17,21,20,0,18,0,0,0,15,-10,29,14,26,15,38,32,91,0,57,42,51,38,42,42,32,32,36,31,46,31,22,26,37,-10,89,0,0,0,0,0,69,70,69,69,69,55,72,26,75,71,57,26,411,406]} 1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. g3 d6 5. Bg2 Nf6 6. d4 cxd4 7. Nxd4 Qc7 {[#] B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack} (7... Be7 $11) (7... Be7 8. Nxc6 bxc6 9. e5 dxe5 10. Qxd8+ Kxd8 11. Bxc6 Rb8 12. O-O Bb7 13. Bg2 Bxg2 14. Kxg2 Nd7 15. Rd1 f5 {0-1 (57) Oleksienko,M (2604)-Demchenko,A (2664) Konya 2018}) 8. Ndb5 $1 $16 {[%cal Rb5c7]} Qb8 {[#]} 9. a4 (9. Bf4 $1 $16 e5 10. Bg5) 9... a6 $146 {White is slightly better.} ({Predecessor:} 9... Be7) 10. Nd4 (10. Na3 {feels hotter.} d5 11. exd5 Qe5+ 12. Qe2 Qxe2+ 13. Nxe2 exd5 14. Bg5) 10... Bd7 11. O-O Be7 12. a5 Qc7 13. Nb3 Ne5 14. f4 Nc4 15. Qe2 e5 16. f5 h6 17. Kh1 Rc8 18. Rd1 Bd8 19. Bf3 Be7 20. Qf1 b5 21. axb6 $1 Qxb6 22. g4 (22. Be2 {seems wilder.} Bb5 23. Qg2 O-O 24. Bf3 Rfd8 25. g4) 22... Bb5 (22... a5 {looks sharper.} 23. Rd3 Qb4 24. Ra2 a4 25. Nd2 O-O) 23. Qg1 Qxg1+ 24. Rxg1 Bd8 25. Rg3 Bb6 26. Rh3 Kd7 27. Be2 Rb8 28. Ra2 Rhc8 29. g5 hxg5 30. Bxg5 Bd8 31. Rg3 Rb7 ({Black should play} 31... Ke8 $14) 32. Bc1 (32. Nc1 $16) 32... Ne8 (32... d5 $11) 33. Bd3 Bh4 34. Rg2 Be1 35. Nxb5 axb5 36. Bg5 f6 37. Bc1 Rcc7 38. Re2 Bh4 39. Kg2 Bg5 40. Re1 Bh4 (40... Ra7 $11 41. Rxa7 Rxa7) 41. Rf1 (41. Rg1 $16) 41... Ra7 $11 42. Rxa7 Rxa7 43. Kf3 Ra2 (43... Bg5 $11) 44. Kg4 $14 Bg5 $1 45. Bxg5 fxg5 46. Kxg5 Ke7 47. Kg6 Nxb2 48. Bxb5 Nf6 49. Rb1 {Strongly threatening Nc1.} ({But not} 49. Kxg7 $6 Ra8 $11) 49... Nxe4 $2 {[%mdl 8192]} (49... Na4 $1 $11 {and Black stays safe.} 50. Bd3 Nc3 {[%mdl 64] Double Attack}) 50. Nc1 {Accuracy: White = 41%, Black = 45%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.2"]
[White "Felgaer, Ruben"]
[Black "Fiora, Emilio"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2562"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,131,33,38,28,37,32,43,38,54,42,57,48,369,371,354,356,615,611,845,853,939,976,962,625,952,624,623,628,625,-77,-90,-120,-28,-133,-126,-183,-187,-175,-162,-216,-206,-229,-225,-259,-207,-208,-144,-191,-137,-126,-126,-126,-126,-127,-132,-126,-126,-172,-121,-114,-117,-145,-139,-135,-97,-93,-30,-31,-32,-35,226,255,255,249,239,227,249,213,262,254,234,222,306,294,313,302,374,366,379,370,436,442,501,495,483,484,650,651,647,534,517,514,592,570,673,648,718,708,777,777,789,783,732,746,4120,4122,4114,4114,4106,4106]} 1. c4 f5 2. Nc3 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. d3 Qe8 {LiveBook: 17 Games} 8. e3 {A10: English Opening: Unusual Replies for Black} (8. e4 fxe4 9. dxe4 e5 10. c5 Kh8 11. Bg5 Na6 12. Bxf6 Rxf6 13. Nd5 Rh6 14. cxd6 Bxd6 15. Ne3 Rf6 16. Nf5 {½-½ (41) Edouard,R (2657)-Narciso Dublan,M (2521) Barcelona 2013}) 8... Nc6 9. Rb1 Qh5 $146 ({Predecessor:} 9... a5 10. a3 Qh5 11. Nd4 Ng4 12. h3 Bd7 13. hxg4 fxg4 14. Nxc6 Bxc6 15. e4 Rf6 {1-0 (26) Alm,H (2268)-Oskarsson,B Sweden 2011}) 10. b4 {[%cal Bb2b4,Bb4b5,Bb5c6][%mdl 32] White is slightly better.} e5 11. Nd2 Qh6 12. Nd5 {aiming for b5.} f4 $2 {[%mdl 8192]} (12... Ng4 $2 13. h3 $18) (12... Bd8 $14) 13. b5 $18 fxg3 14. fxg3 Ng4 $2 (14... Nxd5 15. Bxd5+ Be6 16. Rxf8+ (16. bxc6 Bxd5 17. cxd5 Qxe3+ 18. Kh1 bxc6 $18) 16... Bxf8) 15. h3 Nxe3 16. bxc6 Bxh3 17. Nxe7+ Kh8 18. Rxf8+ Rxf8 19. Nf5 Bxf5 20. Qf3 Nxg2 21. Nf1 $2 ({Only move:} 21. cxb7 $18 Ne1 22. Qf2) 21... Qf6 $1 $17 {Strongly threatening ...Ne1.} (21... Ne1 $2 22. Qxf5 Rxf5 23. Bxh6 $18) 22. Bd2 bxc6 ({Better is} 22... b6 $1 $17 23. Qxg2 Bxd3) 23. Qxg2 (23. Rb3 $11 {keeps the balance.}) 23... Bxd3 24. Re1 (24. Rc1 $17) 24... Bxc4 $19 25. Ne3 Bb5 ({Stronger than} 25... Bxa2 26. Rf1 $11) 26. Ng4 (26. Ba5 {keeps fighting.}) 26... Qg6 27. Nf2 Qc2 28. Ba5 Rf7 29. Ne4 Qd3 30. Ng5 Qd4+ (30... Rf5 $19 31. Nh3 h6) 31. Kh1 $17 Rf6 32. Qh3 {[%csl Gg5][%cal Rh3h7]} Qd5+ 33. Kg1 {[%csl Gg5][%cal Rh3h7]} h6 34. Qc8+ Qg8 35. Qxg8+ Kxg8 36. Ne4 {[#]} Rf7 $1 37. Nc3 Bd3 38. Re3 Bc4 39. Re4 Bd5 ({Black should play} 39... Bf1 $17 {White must now prevent ...Bd3.} 40. Rb4 Bd3) 40. Rb4 $1 $11 Rf3 41. Nxd5 Rxg3+ $2 {[%mdl 8192] [#]} (41... cxd5 $15 42. Bxc7 Rxg3+ 43. Kf2 Rg6) 42. Kf2 $1 $18 {[%cal Rf2g3]} Ra3 43. Ne7+ Kf7 44. Nxc6 Rxa2+ 45. Kf3 Ke6 46. Rb7 Ra3+ 47. Kf2 Kd5 48. Rxc7 g5 49. Bb4 Ra6 50. Ne7+ Ke6 51. Nc8 Ra2+ 52. Kf3 {White is clearly winning.} g4+ 53. Kg3 d5 54. Re7+ Kf6 55. Bd6 Re2 56. Kxg4 d4 57. Kf3 d3 58. Bb4 Rc2 59. Nxa7 Rb2 60. Bc5 Re2 61. Nb5 Rc2 62. Bd6 Rc6 63. Rc7 ({Not} 63. Rxe5 Rxd6 64. Re1 (64. Nxd6 Kxe5 65. Ne4 h5 $11) 64... d2 $11) 63... Rb6 64. Rc5 e4+ 65. Ke3 Ra6 66. Bf4 {Precision: White = 69%, Black = 32%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.3"]
[White "Ricardi, Pablo"]
[Black "Tristan, Leonardo"]
[Result "0-1"]
[ECO "C96"]
[WhiteElo "2479"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "168"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,168,27,27,24,28,27,14,32,20,28,-37,-36,-63,-66,-66,-47,-108,-52,-183,-97,-76,-65,-154,-135,-231,-226,-266,-266,-296,-327,-322,-121,-136,0,-325,-328,-305,-24,-27,0,-312,-300,-346,-348,-293,-285,-423,-448,-445,-416,-609,-609,-963,-971,-910,-898,-943,-878,-1317,-692,-659,-663,-996,-1006,-903,-541,-656,-268,-266,-201,-199,-196,-412,-408,-447,-447,-599,-567,-828,-826,-823,-822,-821,-819,-814,-811,-811,-811,-811,-811,-804,-804,-797,-791,-772,-757,-887,-877,-1545,-1328,-29958,-29961,-29961,-29962,-29960,-29962,-29959,-29962,-29958,-29958,-29942,-29949,-12621,-11468,-11049,-9442,-6406,-4450,-5157,-5106,-29976,-29977,-29977,-29974,-29974,-29975,-29975,-29976,-29976,-29977,-29977,-29977,-29978,-29979,-29979,-29980,-29981,-29982,-29986,-29987,-29987,-29988,-29988,-29989,-29989,-29990,-29990,-29990]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. a4 b4 {C96: Closed Ruy Lopez: Chigorin Defence: 11 d4, replies other than 11...Qc7} 13. d5 (13. Nbd2 Rb8 14. Nf1 b3 15. Bd3 exd4 16. cxd4 c4 17. Be2 c3 18. Ng3 Nf6 19. Bd3 Nc6 20. d5 {0-1 (37) Quesada Perez,Y (2627)-Caruana,F (2811) chess.com INT 2018}) 13... Rb8 14. Nbd2 c4 {The position is equal.} 15. cxb4 Rxb4 {[#]} 16. Nf1 $146 (16. b3 $1 $11) ({Predecessor:} 16. Ra3 Nc5 17. Nf1 Nab3 18. Be3 a5 19. N1d2 Ba6 20. Bxb3 cxb3 21. Bxc5 dxc5 22. Nxe5 {1-0 (59) Lopez Martinez,J (2557)-Candela Perez,J (2411) Villava 2009}) 16... Nc5 $15 17. Ra2 Nab3 18. Be3 a5 19. N3d2 ({White should try} 19. N1d2 $15) 19... Ba6 (19... Nd4 $17 20. Nf3 Nxc2 21. Qxc2 Nd3) 20. Nb1 (20. Bxb3 $15 Nxb3 21. Ng3) 20... Nxa4 (20... Bg5 $19 21. Nbd2 Bxe3 22. Nxe3 Qb6) 21. Nc3 Nac5 22. Ng3 (22. Bxb3 $15 Nxb3 23. Nd2) 22... g6 23. Kh2 (23. Bxb3 $17 {was necessary.} Nxb3 24. Bh6) 23... Nd3 $19 24. Rf1 Bg5 25. Qg4 Bxe3 26. fxe3 Nd2 $2 (26... Bc8 $19 {and Black stays clearly on top.} 27. Qd1 Ba6 28. Bxd3 cxd3) 27. Rfa1 $17 Nb3 $2 (27... Bc8 $17 28. Qe2 Nb3 29. Bxb3 Rxb3) 28. Rf1 $1 $19 Bc8 29. Qd1 Nbc1 $2 ({Black should play} 29... Qb6 $19 {White must now prevent ...Nbc5.} 30. Bxd3 cxd3) 30. Ra1 $11 Nb3 $2 $36 {[%mdl 10240] Black fights for an advantage.} (30... Rxb2 $11 31. Rxc1 Nxc1 32. Qxc1 Rb4) 31. Ra2 $19 Qb6 32. Rf3 Nbc5 33. Bxd3 Nxd3 34. Nf5 (34. Qf1 {might work better.}) 34... gxf5 35. exf5 {[#] Rg3+ would kill now.} f6 36. Ne4 (36. e4 $142) 36... Kh8 37. Ng3 Rxb2 38. Rxb2 Qxb2 39. Ne4 Rg8 {[%csl Gg8][%cal Rb2g2]} 40. Qf1 Qc1 41. Qxc1 Nxc1 42. Nxd6 Ba6 43. Ne4 Rf8 44. Rf1 Nd3 (44... Ne2 $142 45. Nc5 Bb5) 45. Ra1 Bb7 46. Rxa5 Rc8 47. Nc3 $2 (47. Rb5 {only move.} Rc7 48. Nc3) 47... Rc5 48. Rxc5 Nxc5 49. e4 Bc8 50. g4 Bd7 51. Kg3 Na4 52. Na2 c3 53. Kf2 c2 54. Ke3 Nc5 55. Kd2 Nxe4+ 56. Kxc2 Nf2 57. Nc3 Nxh3 58. Ne4 Kg7 59. Nc5 Bc8 60. d6 Nf2 61. d7 {[#]} Bxd7 $1 62. Nxd7 Nxg4 {[%mdl 4096] Endgame KN-KN} 63. Kd3 h5 64. Nc5 h4 65. Ke2 h3 66. Kf3 h2 67. Kg2 Ne3+ 68. Kxh2 Nxf5 69. Kh3 Kg6 70. Kg4 Nd4 71. Nd3 f5+ {Black mates.} 72. Kg3 Kf6 73. Nc5 Kg5 74. Kf2 Kf4 75. Nd3+ Ke4 76. Nc5+ Kd5 77. Nd7 Ne6 78. Ke3 f4+ 79. Kf3 e4+ 80. Kg4 e3 81. Nf6+ Ke5 82. Nd7+ Kd6 83. Nf6 e2 84. Ne4+ Kc7 {Accuracy: White = 30%, Black = 64%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.4"]
[White "Lopez Azambuja, Nicolas"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2320"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,68,31,0,7,0,11,-18,-12,-50,-43,-81,-81,-118,-125,-128,-61,-87,-65,-75,-84,-146,-151,-152,-142,-142,-152,-131,-135,-157,-140,-254,-251,-245,-314,-297,-231,-566,-552,-560,-558,-520,-524,-784,-463,-1381,-1348,-5393,-5493,-3438,-3040,-2625,-2699,-2416,-2316,-1689,-1662]} 1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O g6 6. c4 Bg7 7. Nc3 c5 8. d5 exd5 {E14: Queen's Indian: Classical Variation (4 e3)} 9. cxd5 Nxd5 10. Nxd5 Bxd5 {The position is equal.} 11. e4 $146 (11. Bxg6 $5 hxg6 12. Qxd5 $11) ({Predecessor:} 11. Bxg6 hxg6 12. Qxd5 Nc6 13. e4 Rh5 14. Bg5 Nb4 15. Qd2 f6 16. Bf4 {0-1 (28) Martinez Duany,L (2484)-Cordova,E (2616) Merida 2014}) 11... Be6 12. e5 Nc6 13. Bf4 O-O 14. Re1 Rc8 (14... f6 $17 {...fxe5 is the strong threat.} 15. Be4 fxe5 16. Bxc6 dxc6 17. Qxd8 Raxd8 18. Bxe5 Rfe8) 15. Qd2 f6 16. Ba6 {[#]} fxe5 $1 {[%mdl 512]} 17. Bg5 (17. Nxe5 $142 Nxe5 18. Bxe5) 17... Qc7 18. Bxc8 Qxc8 ({Don't play} 18... Rxc8 19. Bh6 $17) 19. Bh6 {[#]} Rxf3 $1 {[%mdl 512]} 20. Bxg7 (20. gxf3 Nd4) 20... Kxg7 21. gxf3 Nd4 22. Qe3 (22. Qd3 $17 {was called for.}) 22... d6 $19 23. Rad1 Bd5 ({Less strong is} 23... Bxa2 24. Rxd4 cxd4 25. Qa3 $15) 24. Rxd4 cxd4 {[%mdl 4096] Endgame KQR-KQB} 25. Qg5 $2 (25. Qa3 {was the crucial defense.} Qd7 26. h3) 25... Bxf3 {Black is clearly winning.} 26. Rc1 Qd7 27. Kf1 h6 28. Qg3 Qf7 29. Qh3 (29. Ke1 $142 Qf5 30. Kd2) 29... d3 30. Ke1 {[#]} d2+ $1 {[%mdl 64] Decoy} 31. Kxd2 Qf4+ 32. Kc2 Qc4+ {[%mdl 64] Double Attack} 33. Kd2 {[#]} Qb4+ $1 34. Kc2 Qc5+ {Accuracy: White = 33%, Black = 81%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.5"]
[White "Mussanti, Diego"]
[Black "Hoffman, Alejandro"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2305"]
[BlackElo "2461"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,100,27,18,22,28,16,24,19,16,25,0,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,0,0,0,-6,0,0,52,36,47,47,74,68,77,84,91,39,49,46,83,83,271,240,239,226,280,239,397,386,359,318,293,321,316,302,304,308,264,245,241,237,224,70,70,8,8,0,22,6,6,6,6,6,8,8,11,12,36,0,0,0,0,0,0,0,0,0,0]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O Nb6 {C41: Philidor Defence} (6... O-O 7. Re1 c6 8. a4 a5 9. h3 Re8 10. Ba2 Bf8 11. Be3 Qc7 12. Ng5 Re7 13. f4 b6 14. fxe5 dxe5 15. d5 cxd5 16. exd5 {1-0 (16) Wang,H (2709)-Ivanchuk,V (2726) Huaian 2017}) 7. Bb3 exd4 $1 8. Qxd4 O-O {White has an edge.} 9. a4 a5 10. h3 Nfd7 11. Bf4 Bf6 12. Qd2 Nc5 13. Rfe1 Be6 $146 ({Predecessor:} 13... Nxb3 14. cxb3 {½-½ (62) Rogulj,B (2405)-Krstic,U (2457) Bol 2013}) 14. Bxe6 Nxe6 15. Bg3 Nc4 16. Qe2 $1 {[%cal Re2c4]} Bxc3 ({Of course not} 16... Nxb2 $6 17. e5 $16) 17. bxc3 Nb6 18. e5 d5 19. Nd4 Nxd4 20. cxd4 Re8 (20... Nc4 $11) 21. Qg4 Qc8 22. Qxc8 Raxc8 23. Reb1 $1 Re6 24. Rb5 $1 Ra8 {[#]} 25. f4 ({White should try} 25. f3 $1 $16) 25... Rc6 $14 26. Be1 Rxc2 27. Bxa5 c6 $2 (27... g6 $16) 28. Rxb6 $18 Rxa5 29. Rxb7 {[%cal Rb7b8][%mdl 4096] Endgame KRR-KRR} g6 30. Rc7 Rc4 $2 (30... Rb2 31. Rxc6 Rb4) 31. Rb1 {Rb8+ is the strong threat.} Ra8 32. Rbb7 Rf8 33. a5 Ra4 34. Rxc6 Rxa5 35. Rd6 h5 36. Rc7 h4 37. Rdd7 Ra1+ {[#]} 38. Kh2 $2 (38. Kf2 $1 $18) 38... Re1 $1 $14 39. Rc2 (39. Rxd5 $14 Rb8 40. e6 Rxe6 41. f5 gxf5 42. Rxf5) 39... Ra8 $11 40. g3 hxg3+ 41. Kxg3 {Strongly threatening Rcc7.} Ra3+ 42. Kg2 Ree3 43. Rxd5 Rg3+ 44. Kf1 Ra1+ 45. Kf2 $1 Rxh3 46. Rc8+ Kg7 {The position is equal.} 47. Rdd8 {White wants to mate with Rg8+.} Ra2+ 48. Kg1 Rg3+ 49. Kh1 {Intending Rg8+ and mate.} Rh3+ 50. Kg1 {Rg8+ would kill now.} Rg3+ {Accuracy: White = 67%, Black = 69%.} 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.6"]
[White "Bitelmajer, Martin"]
[Black "De Dovitiis, Alejo"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2453"]
[BlackElo "2353"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,30,43,69,25,38,22,47,16,22,-12,-18,-5,0,-27,0,-2,0,0,0]} 1. d4 Nf6 2. Nf3 d6 3. c4 Bf5 4. Nc3 c6 5. g3 Nbd7 6. Bg2 e5 7. O-O h6 8. b3 {[%cal Bb2b3,Bb3b4,Bb4b5][%mdl 32] A53: Old Indian Defence without Nf3} (8. Nh4 Bh7 9. d5 e4 10. Bh1 Be7 11. Ng2 Ne5 12. Ne3 Qd7 13. b4 h5 14. dxc6 bxc6 15. b5 cxb5 16. cxb5 h4 {1-0 (50) Potkin,V (2608)-Klein,D (2517) Wijk aan Zee 2015}) 8... Be7 9. Bb2 Bh7 10. e3 $146 {White is slightly better.} ({Predecessor:} 10. c5 e4 11. cxd6 Bxd6 12. Nd2 Qe7 13. Nc4 Bb4 14. d5 Bxc3 15. d6 Qe6 16. Bxc3 {0-1 (43) Bracker,A (2263)-Gorbatov,A (2375) Pardubice 2011}) 10... O-O 11. b4 exd4 12. Qxd4 Qb6 13. b5 Rac8 14. Rfd1 Qxd4 15. Nxd4 {[%cal Rb5c6]} Ne5 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.7"]
[White "Scarella, Enrique Alejandro"]
[Black "Roselli Mailhe, Bernardo"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "2304"]
[BlackElo "2434"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,40,35,37,39,48,10,15,13,9,4,8,0,0,0,0,0,0,5,11,8,8,7,5,0,0,-43,-54,-105,-98,-131,-144,-177,-17,-29,-15,-37,-37,-37,-31,-31,-33,-35,-33,-45,-45,-41,-39,-115,-26,-22,-30,-241,-237,-315,-273,-272,-270,-263,-263,-255,-255,-254,-246,-248,-250,-245,-234,-210,-158,-183,-160,-564,-145,-1305,-1138,-828,-744]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Re1 Nc6 7. d5 Nb4 {A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems} (7... Nb8 8. c4 a5 9. Nc3 Na6 10. e4 Bg4 11. h3 Bxf3 12. Bxf3 Nd7 13. Be3 c6 14. Bg2 Nac5 15. Qe2 {0-1 (35) Paravyan,D (2634)-Andreikin,D (2719) St Petersburg 2018}) 8. e4 e5 9. dxe6 Bxe6 {The position is equal.} 10. Nc3 Re8 11. a3 $146 ({Predecessor:} 11. h3 h6 12. Be3 Nc6 13. Qd2 Kh7 14. Nd4 Bd7 15. f4 Nxd4 16. Bxd4 {½-½ (25) Pihlajasalo,H (2261)-Kononen,K (2236) Finland 2012}) 11... Nc6 12. Nd5 Bxd5 13. exd5 Rxe1+ 14. Nxe1 Ne5 15. Nd3 Nfd7 16. Nxe5 Nxe5 17. Qe2 Qe8 18. Bd2 Nd7 19. Qc4 Bxb2 20. Rb1 ({White should play} 20. Ra2 $15 Bg7 21. Qxc7) 20... Bxa3 $17 21. Rxb7 Bc5 22. Rxc7 {[#]} Rc8 $2 ({Black should try} 22... Bb6 $1 $19 23. Rc6 Ne5 {[%mdl 64] Double Attack}) 23. Rxc8 $11 Qxc8 24. Qb5 Ne5 25. Be4 h5 26. Kg2 h4 27. h3 $1 hxg3 28. f4 Nd7 29. Kxg3 Nf6 30. Bd3 (30. Bf3 $15) 30... Qd8 (30... Nxd5 $17 31. Qc4 Ne7) 31. f5 $1 Qe7 $36 {[%mdl 2048] Black has the initiative.} 32. Qc4 $2 {[#]} (32. fxg6 $11 fxg6 33. h4) 32... gxf5 $1 $19 {Strongly threatening ...Qe5+.} 33. Kf3 Qe5 {Hoping for ...Qh2.} 34. Qf4 Qxd5+ 35. Ke2 {Black must now prevent Qg5+.} Qg2+ 36. Kd1 Ne4 37. Be1 Qxh3 38. Bxe4 fxe4 39. Qxe4 Qh5+ 40. Kc1 {intending Bc3.} d5 41. Qe8+ Kg7 42. Qc6 $2 (42. Bc3+ $17 {is more resistant.} d4 43. Be1) 42... d4 $2 (42... Qh6+ $19 {and Black stays clearly on top.} 43. Qxh6+ Kxh6) 43. Bg3 $2 {[%mdl 8192]} (43. Kb2 $17) 43... Qg5+ 44. Kb1 Ba3 {Accuracy: White = 35%, Black = 55%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.8"]
[White "Diaz Hollemaert, Nahuel"]
[Black "Muniz, Rafael"]
[Result "1-0"]
[ECO "E21"]
[WhiteElo "2426"]
[BlackElo "2250"]
[Annotator "RC"]
[PlyCount "55"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d6 7. Qc2 Nc6 8. Bd2 e5 9. dxc5 Bxc5 10. a3 a6 11. h3 h6 12. g4 b5 13. g5 hxg5 14. Nxg5 Bb7 15. Rg1 Ne7 16. Be4 Bxe4 17. Ncxe4 Ng6 18. h4 bxc4 19. Nxf6+ gxf6 20. Ne6 Qd7 21. Nxc5 dxc5 22. h5 Qd3 23. Rc1 Rab8 24. hxg6 fxg6 25. Rxg6+ Kf7 26. Rg4 Rg8 27. Rxg8 Rxg8 28. Qxc4+ 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.9"]
[White "Carbone, Diego"]
[Black "Gemy, Jose Daniel"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2256"]
[BlackElo "2391"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,73,0,6,14,5,35,32,50,47,45,45,22,34,46,48,42,49,64,45,58,46,53,44,47,30,35,16,16,13,74,69,90,79,86,80,103,102,101,10,26,13,17,-31,-31,-25,9,0,0,0,125,122,117,121,115,120,128,123,482,479,29996,29997,29997,29998]} 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Bg2 d5 6. Nf3 O-O 7. O-O dxc4 {E11: Bogo-Indian} (7... c6 8. Qc2 Nbd7 9. Bf4 b6 10. Rd1 Ba6 11. cxd5 cxd5 12. Ne5 Nxe5 13. dxe5 Ng4 14. Bf3 f5 15. exf6 Nxf6 16. Qa4 Bb7 17. Nd2 Qe8 18. Qxe8 Rfxe8 {½-½ (29) Giri,A (2783)-Ding,L (2813) Wijk aan Zee 2019}) 8. Qc2 a6 9. Qxc4 b5 {White is slightly better.} 10. Qc2 Bb7 11. Rc1 Bd6 12. a3 Be4 13. Qd1 Nbd7 14. Ba5 Rc8 15. Nbd2 Ba8 $146 16. Rc2 Qe7 17. Rac1 {[%cal Ra5c7]} c5 18. dxc5 Rxc5 19. Nb3 Rxc2 20. Qxc2 e5 (20... Be4 $11 21. Qd2 h6) 21. Nh4 $16 Bxg2 22. Nf5 $1 {[%cal Rf5e7]} Qe6 23. Kxg2 Bb8 24. Bb4 Re8 25. Na5 ({Better is} 25. Rd1 $1 $16) 25... g6 $11 26. Ne3 Ba7 27. Qd2 Ne4 28. Qd3 Ng5 (28... Qh3+ $5 29. Kxh3 Nxf2+ {[%mdl 64] Double Attack} 30. Kg2 Nxd3 31. exd3 Bxe3 $15) 29. Rc7 $36 {[%cal Bc1c7,Bc7b7,Bb7b8][%mdl 2080] White has good play.} Qh3+ $1 30. Kg1 Bd4 (30... Bxe3 $1 $11 {keeps the balance.} 31. Qxe3 h6) 31. Nc6 $16 {And now Nd5 would win.} Nc5 32. Bxc5 $1 Bxc5 {[#]} 33. b4 $1 {[%cal Rb4c5]} Bb6 {[#]} 34. Rb7 $1 {[%cal Rb7b6]} e4 $2 {[%mdl 8192]} (34... Bxe3 $16 {is a better chance.} 35. Qxe3 {[%mdl 64] Double Attack} Qe6) 35. Qc3 $18 {Ne7+ would kill now.} Bxe3 (35... Bd8 $18 36. Rb8 Qd7 37. Rxd8 (37. Nxd8 Rxd8 38. Rxd8+ Qxd8 $16) 37... Rxd8) 36. Ne7+ {[%mdl 64] Overworked Piece} ({Less strong is} 36. Qxe3 h6 $16) 36... Rxe7 37. Rb8+ {Accuracy: White = 59%, Black = 56%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.10"]
[White "Alonso, Salvador"]
[Black "Torella, Rodolfo"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2502"]
[BlackElo "2022"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,95,25,14,13,12,16,8,6,2,8,6,16,18,17,-5,33,33,20,27,26,20,71,58,54,38,72,81,253,252,314,327,345,336,449,449,449,449,449,440,437,406,430,361,639,625,1339,921,1246,1302,1302,912,4910,4814,5295,835,753,406,732,753,753,745,691,684,684,669,640,625,29965,29965,29965,29962,29950,29957,12591,11029,5340,5091]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 {B33: Sicilian: Pelikan and Sveshnikov Variations} 12. Nc2 O-O (12... a5 13. g3 {½-½ (13) Nepomniachtchi,I (2763)-Carlsen,M (2835) St Petersburg 2018}) 13. g3 Bg5 {The position is equal.} 14. Bg2 a5 15. O-O Be6 16. Qd3 Ne7 17. Nde3 Rc8 18. Rad1 Qc7 $146 {[%cal Re6c4]} ({Predecessor:} 18... Bxe3 19. Nxe3 Qb6 20. b3 Rcd8 {1-0 (40) Nestorovic,N (2504)-Godde,M (2091) Neustadt an der Weinstrasse 2018}) 19. b3 Rcd8 20. Kh1 f6 (20... Bxe3 $11 {remains equal.} 21. Nxe3 Nc6) 21. f4 Bh6 $1 22. Nf5 Bxf5 23. exf5 exf4 $2 {[#]} (23... Kh8 $16 {was worth a try.}) 24. Nd4 $1 $18 Qc5 25. Rfe1 ({But not} 25. gxf4 $6 Rfe8 $18) 25... Rd7 26. Ne6 {[%mdl 64] Double Attack} Qxf5 27. Qxf5 Nxf5 28. Nxf8 Kxf8 29. Bh3 g6 30. Bxf5 gxf5 {[%mdl 4096] Endgame [#] KRR-KRB} 31. c5 $1 {[%mdl 512]} fxg3 $2 (31... Rc7 32. cxd6 Rd7) (31... dxc5 32. Rxd7) 32. Rxd6 Rf7 33. c6 Bf4 34. Rd8+ Kg7 35. Rd7 Kf8 36. hxg3 Bxg3 37. Rxf7+ (37. Rd8+ $142 Kg7 38. Rg1) 37... Kxf7 {KR-KB} 38. Rc1 Bc7 39. Rd1 Ke8 40. Rd7 Be5 41. Rxh7 Kd8 42. Kg2 Kc8 43. Ra7 Bc7 44. Ra8+ Bb8 45. Rxa5 Be5 46. Ra7 Kd8 47. Rb7 Bc3 48. Kf3 {Accuracy: White = 75%, Black = 36%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.11"]
[White "Lujan, Carolina"]
[Black "Rupel, David"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2357"]
[BlackElo "1953"]
[Annotator "NA RC"]
[PlyCount "65"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

{[%evp 20,63,46,32,62,54,146,162,126,133,117,90,110,77,86,53,58,18,132,133,163,186,151,148,249,257,225,258,258,276,287,289,300,284,305,323,32767,32767,318,340,461,472,487,541,584,616]} 1. e4 c6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Ne4 5. d4 Nxc3 6. bxc3 {B11: Caro-Kann: Two Knights Variation} Bg4 7. h3 Bxf3 8. Qxf3 e6 9. Bd3 Nd7 10. O-O b5 $146 ({Predecessor:} 10... Qc7 11. c4 Be7 12. Rb1 dxc4 13. Bxc4 O-O 14. Qe4 g6 15. f4 Nb6 16. Bd3 {½-½ (16) Solak,D (2599)-Rodshtein,M (2634) Valjevo 2012}) 11. Qg3 Nb6 12. Bg5 Qd7 {[#]} (12... Be7 $1 $14 13. Bxe7 Qxe7) 13. f4 $1 h6 14. Bh4 Be7 15. Bxe7 Qxe7 16. Qxg7 O-O-O 17. Bg6 Rdf8 18. Bh7 Kd8 (18... Re8 $142) 19. Rf3 Nd7 20. a4 f5 21. exf6 Qxf6 (21... Nxf6 {was necessary.} 22. Qxe7+ Kxe7) 22. Qxf6+ Nxf6 23. Bd3 bxa4 24. Rxa4 Rf7 25. Re3 Re7 26. g4 Rhe8 27. Ra6 Rc7 28. g5 hxg5 (28... Rg7 {is a better defense.} 29. g6 Ne4 30. Bxe4 (30. Rxc6 Rxg6+ 31. Kf1 Re7 $18) 30... dxe4) 29. fxg5 Rg7 30. h4 Nh5 31. Rf3 c5 32. dxc5 $18 e5 33. Bb5 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.12"]
[White "Coro, Lucas"]
[Black "Dotta, Gian Franco"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2284"]
[BlackElo "1896"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,96,33,37,42,40,-17,-17,-8,63,46,73,32,39,41,44,36,72,62,66,83,83,84,79,47,206,198,185,198,196,121,91,99,94,106,116,70,79,79,67,38,152,0,77,85,85,66,137,68,48,38,43,21,26,20,41,37,113,135,128,99,245,245,332,128,245,240,214,36,49,18,34,34,34,28,30,30,29972,29972,6406,6406,29987]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. e4 h6 9. h3 Nh7 10. Be3 {E68: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4} (10. dxe5 Nxe5 11. Nxe5 dxe5 12. Be3 c6 13. Qxd8 Rxd8 14. Rfd1 Re8 15. Rd2 Ng5 16. Kh2 Ne6 17. Rad1 h5 {½-½ (66) Kjartansson,G (2441)-Berkes,F (2687) Reykjavik 2014}) 10... Ng5 11. Ne1 ({White should play} 11. Nxg5 $14 hxg5 12. b3) 11... exd4 $146 ({Predecessor:} 11... Nb6 12. h4 Nh3+ 13. Kh2 Nf4 14. gxf4 exf4 15. Bc1 Qxh4+ 16. Kg1 g5 17. Nb5 c5 18. Nxd6 {0-1 (29) Gaboyan,S (2043)-Hayrapetyan,A (2367) Yerevan 2014}) 12. Bxd4 {The position is equal.} Bxd4 (12... Ne5 $11) 13. Qxd4 $14 Ne5 14. f4 Ne6 ({Of course not} 14... Nc6 $6 15. Qe3 $16) 15. Qf2 Nxc4 16. Rd1 c6 17. b3 {[%mdl 1024] White has strong compensation.} Nb6 18. f5 Ng5 19. h4 Nh7 20. Qf4 g5 $2 (20... Qf6 $14) 21. Qxd6 $18 Qxd6 22. Rxd6 Kg7 23. Nf3 (23. e5 $18) 23... Re8 $16 24. Bh3 g4 25. Bxg4 {aiming for e5.} Nf6 26. Bh3 Nxe4 27. Nxe4 Rxe4 28. Rd8 {Black must now prevent f6+!} Kf6 (28... Re2 $14) 29. Rd6+ (29. g4 $142) 29... Kg7 30. Kf2 Nd5 31. Re1 Nf6 (31... Rxe1 $14 32. Kxe1 (32. Nxe1 Nf6 $14) 32... f6) 32. Rd8 (32. g4 $1 $16 {[%cal Rg4g5] And now g5 would win.} Rxe1 33. Kxe1) 32... Rxe1 $14 33. Kxe1 {Strongly threatening g4.} b6 34. Nd4 Bb7 35. Rxa8 Bxa8 $11 {[%mdl 4096] Endgame KBN-KBN} 36. Bg2 Nd5 (36... c5 $14 37. Bxa8 cxd4) 37. Bxd5 $1 $16 cxd5 {KB-KN} 38. Kf2 Kf6 (38... h5 $16) 39. g4 $1 $18 Ke5 {[#]} 40. Ke3 $2 (40. g5 $1 $18 {is the precise move to win.} h5 41. Ke3) 40... Bb7 (40... f6 $16) 41. Nf3+ Kd6 {[#]} 42. Kd4 $2 (42. g5 $1 $18 {[%cal Rg5h6]} hxg5 43. h5 (43. Nxg5 Bc8 $16) (43. hxg5 d4+ 44. Kf4 d3 $11)) 42... f6 $1 $14 43. g5 fxg5 44. hxg5 hxg5 45. Nxg5 a5 46. f6 {Threatens to win with f7.} Bc6 $2 {[%mdl 8192]} (46... Bc8 $11) 47. f7 Ke7 {[#]} 48. Ne6 $1 {[%mdl 512]} Bb7 {Accuracy: White = 47%, Black = 36%.} (48... Kxe6 49. f8=Q) 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.13"]
[White "Lagar, Valentin Alejo"]
[Black "Barreto, Ignacio C. de Barro"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2196"]
[BlackElo "2212"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,57,22,22,35,18,16,30,41,7,0,0,3,3,14,0,0,-5,0,-2,-4,0,0,-8,260,247,233,230,222,177,287,255,262,245,264,225,252,200,256,152,138,101,122,142,221,185,189,181,207,198]} 1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 d5 5. dxe5 Nxe4 6. Nf3 Nc5 {B07: Pirc Defence: Miscellaneous Systems} 7. Bc2 Bg4 8. O-O Nc6 {White has an edge.} (8... Be7 9. Bf4 Ne6 10. Bg3 O-O 11. Nbd2 Bh5 12. Qb1 Bg6 13. Rd1 c6 14. Nf1 {1-0 (62) Melkumyan,H (2668)-Shimanov,A (2620) Saint Louis 2018}) 9. Bf4 Ne6 10. Bg3 $1 Bc5 $146 ({Predecessor:} 10... d4 11. Qe2 Qd7 12. Rd1 O-O-O 13. Be4 Ng5 14. Nbd2 Nxe4 15. Nxe4 {0-1 (55) Schmuki,R (2038)-Buglisi,M (1930) Kaltern 2017}) 11. Nbd2 Bh5 12. Qe2 Bb6 13. Rad1 Qe7 14. b4 a6 15. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Nxb4 16. Bb3 $36 {[%mdl 2048] White is pushing.} Nc5 $2 {[%mdl 8192] [#]} (16... Nc6 $1 $11) 17. cxb4 $18 Nxb3 18. Nxb3 Qxb4 19. Qd3 Rd8 (19... Qxa4 $142 20. Qxd5 Qb5) 20. a5 Bg6 21. Qd2 Qxb3 22. axb6 Qxb6 23. Rc1 {Strongly threatening e6!} c5 24. Qc3 (24. Bh4 $18 Rd7 {[#]} 25. e6 $1 {[%mdl 512]} fxe6 26. Qf4) 24... Rc8 $16 25. Bh4 Qe6 26. Qa3 Be4 (26... b6 $16) 27. Rxc5 O-O 28. Bg3 Qe7 29. Rc3 {Accuracy: White = 45%, Black = 48%.} 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.14"]
[White "Trois, Francisco R.T."]
[Black "Zapata Charles, Santiago"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2152"]
[BlackElo "2300"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,57,24,23,57,18,41,21,9,0,43,39,35,8,7,13,8,5,22,-14,0,-15,20,-32,-11,-78,-94,-148,-162,-166,-143,-137,-60,-130,-55,-73,-26,-26,-41,-67,-34,-91,0,0,0,0,28,8,8,6]} 1. c4 Nf6 2. g3 g6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. h4 h6 {A16: English Opening: 1...Nf6 with ...d5} (6... Bg7 7. h5 Nc6 8. Nf3 Bg4 9. h6 Bf6 10. Ne4 e5 11. b3 O-O 12. Nxf6+ Qxf6 13. Bb2 Rfe8 14. Rh4 {1-0 (30) Van Wely,L (2642)-Pultinevicius,P (2465) Batumi 2018}) 7. d3 Nc6 8. Nf3 Bg7 9. Be3 O-O 10. Qd2 Kh7 11. Rc1 e5 12. Bc5 Re8 13. O-O Be6 $146 ({Predecessor:} 13... Bg4 14. Nh2 {0-1 (45) Petersen,T (2334)-Olofsson Dolk,M (2143) Helsingor 2014}) 14. b4 Qd7 15. Rfe1 f5 16. Red1 (16. e4 $11) 16... Rad8 17. Qc2 (17. b5 $11 Nd4 18. Nh2) 17... Nd4 $17 18. Nxd4 ({Better is} 18. Qd2) 18... exd4 19. Bxb6 cxb6 20. Nb1 Bd5 ({Black should try} 20... Be5 $17 {White must now prevent ...f4.} 21. Qd2 Qf7) 21. Bf3 {[#]} ({White should play} 21. Qc7 $15) 21... Qf7 (21... f4 $1 $17 {[%mdl 512] ...fxg3 is the strong threat.} 22. g4 (22. gxf4 Qh3) 22... Qe7) 22. Nd2 $15 g5 23. hxg5 hxg5 24. Re1 Bf8 25. a3 {[#]} (25. Bxd5 $15 Qxd5 26. Qa4) 25... b5 (25... Be6 $1 $17) 26. Bxd5 $11 Qxd5 27. Qb3 Qxb3 28. Nxb3 Rd7 29. Rc2 {Accuracy: White = 31%, Black = 21%.} 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.15"]
[White "Salinas Herrera, Pablo"]
[Black "Gaye, Gustavo"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2477"]
[BlackElo "1984"]
[Annotator "TA"]
[PlyCount "202"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,202,74,65,75,82,84,79,99,100,116,117,106,78,81,50,50,58,66,47,58,52,52,40,33,0,60,43,57,14,17,20,44,25,39,33,35,6,16,5,34,37,46,44,42,35,39,40,44,41,45,5,21,-6,40,18,48,6,50,28,47,46,129,104,104,100,95,89,89,91,116,45,116,68,89,78,92,81,136,122,106,84,88,58,62,57,41,25,35,36,34,26,27,29,29,0,0,-18,0,0,33,-18,0,0,0,-7,-7,-6,0,0,0,0,0,0,0,0,0,-7,0,0,0,-14,0,-7,0,-18,0,0,0,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 g6 2. d4 Bg7 3. c4 c5 4. d5 d6 5. e4 Nf6 6. Bd3 O-O 7. h3 e6 8. O-O exd5 9. exd5 Na6 10. Nc3 h6 {E90: King's Indian: Classical: Early deviations and 6 h3} (10... Nh5 11. Re1 Nc7 12. Bg5 f6 13. Bd2 f5 14. Qc2 h6 15. Ne2 g5 16. Ng3 Nxg3 17. fxg3 Rb8 18. a4 {½-½ (59) Fell,S (2310)-Rodriguez Vila,A (2481) Villa Martelli 2018}) 11. Bf4 Nc7 12. Qd2 Kh7 {White is better.} 13. Rfe1 a6 14. a4 b6 $146 ({Predecessor:} 14... Rb8 15. Qc2 b5 16. Bxg6+ fxg6 17. Nh4 Bf5 18. Nxf5 gxf5 19. Qxf5+ {½-½ (34) Lee,D-Umezinwa,G Chicago 1988}) 15. Re2 Ra7 16. Bh2 Re8 $1 17. Rae1 Rxe2 18. Rxe2 Nce8 19. Qe1 Bf8 20. Nd1 Bd7 21. Nc3 Bc8 22. Nd2 (22. Bf4 {looks sharper.} Re7 23. Be3 Bg7 24. b3 Nd7 25. Bc2) 22... Re7 23. Qb1 Rxe2 24. Nxe2 a5 25. Nf4 {[%cal Rd3g6] Black must now prevent Bxg6+!} Bg7 26. Nf3 Kg8 27. b3 Nd7 28. Bc2 Qf6 29. Qe1 Qa1 30. Kf1 Qxe1+ 31. Kxe1 Ne5 32. Nd2 Kf8 33. Ne2 f5 34. Nf4 Kf7 35. Nf1 Nf6 (35... g5 $5 {[%cal Rg5f4]} 36. Ne2 f4 $11) 36. Ne3 Bd7 37. f3 Bc8 38. Ke2 g5 39. Ne6 {[%mdl 64] [#] Decoy} Bxe6 (39... f4 $14) 40. dxe6+ Kxe6 {...f4 would now be nice for Black.} 41. Bxf5+ Ke7 42. Bc2 Ke6 43. h4 Nc6 44. hxg5 (44. Bf5+ $16 Ke7 45. hxg5 Nd4+ 46. Kd3 hxg5 47. Bh3) 44... hxg5 (44... Nd4+ $14 45. Kd3 hxg5) 45. Nf5 Bf8 46. g4 Ne5 47. Ne3 Bg7 (47... Nc6 $142) 48. Bf5+ $16 Ke7 49. Nc2 Nc6 50. Bg1 d5 51. Be3 Bh6 52. Na3 d4 53. Bf2 Ne8 54. Be4 Ne5 55. Bg3 Bg7 56. Nb1 Nd6 57. Bd5 Bf6 58. Nd2 Kd7 59. Nf1 (59. Ne4 $14 Nxe4 60. Bxe4) 59... Ke7 {The position is equal.} 60. Be1 Ng6 61. Kd2 Be5 62. Ng3 Bf4+ 63. Kd1 Kf6 64. Nh5+ Ke5 65. Ng7 Ne7 66. Ba8 Ng6 67. Bc6 Kf6 68. Nh5+ Ke5 69. Bf2 Ne7 70. Bd7 Ng6 71. Ke1 Nf8 72. Bc6 Ng6 73. Ba8 Ne7 74. Nxf4 Kxf4 $11 {[%mdl 4096] Endgame KBB-KNN} 75. Ke2 Ng6 $1 76. Be1 Ke5 77. Bg3+ Nf4+ 78. Kd2 Ne8 79. Be4 Nd6 80. Bc2 Nf7 81. Ke1 Nd8 82. Be4 Nf7 83. Kf1 Nd6 84. Bd3 Ne8 85. Bc2 Nf6 86. Be1 Ne8 87. Bd2 Nc7 88. Kf2 Nce6 89. Bd1 Nc7 90. Bc2 Nce6 91. Bf5 Nc7 92. Kg3 Ne2+ 93. Kf2 Nf4 94. Be4 Nce6 95. Ke1 Nc7 96. Kd1 Ne8 97. Kc2 Nd6 98. Bc6 Nc8 99. Be4 Nd6 100. Bc6 Nc8 101. Be4 Nd6 {Accuracy: White = 50%, Black = 50%.} 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.16"]
[White "Vazquez, Facundo"]
[Black "Larrea, Manuel"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "2019"]
[BlackElo "2269"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,122,43,51,37,40,0,0,0,1,-25,-15,-20,-21,-27,-27,-32,-13,-55,-51,-54,-50,-56,-51,-47,-45,-76,-75,-76,-67,-83,-74,-74,-75,-94,-91,-90,-50,-52,-56,-66,-46,-63,-54,-86,-45,-62,-61,-73,0,-61,0,-78,-63,-98,-72,-84,-104,-106,-90,-93,-47,-41,-35,-58,-66,-103,-76,-71,-67,-77,-51,-51,-50,-58,-39,-43,-35,-75,-44,-50,-28,-43,-26,-67,-59,-100,-87,-110,-41,-136,-130,-119,-135,-124,-31,-91,-92,-99,-100,-199,-201,-198,-6,-10,-9,-29967,-29968]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. Nc3 c6 7. Qc2 Bd6 8. e3 Nf8 9. Bd3 Ng6 10. O-O {D35: Queen's Gambit Declined: Exchange Variation} (10. Nh4 Nf8 11. Nf5 Bxf5 12. Bxf5 Ng6 13. O-O-O h6 14. Bxf6 Qxf6 15. e4 Ne7 16. Bh3 Bb4 17. e5 Qh4 18. Kb1 {½-½ (85) Petrosyan,M (2579)-Petrosian,T (2598) Yerevan 2019}) 10... O-O 11. e4 dxe4 12. Nxe4 {The position is equal.} Be7 13. Ng3 $146 ({Predecessor:} 13. Rfe1 Nxe4 14. Bxe7 Nxe7 15. Bxe4 h6 16. a4 Re8 17. a5 a6 {½-½ (29) Massimini Gerbino,M (2375)-Wurschner,M (2200) IECG email 2003}) 13... Bg4 14. Nh4 Nxh4 15. Bxh4 h6 16. h3 Be6 {Threatens to win with ...g5.} 17. Ne2 Nd5 18. Bg3 Nb4 19. Qb1 Bf6 20. Rd1 Re8 21. a3 Nxd3 22. Qxd3 Qb6 23. b4 Rad8 24. Bf4 a5 25. Rab1 Rd7 26. Be3 axb4 27. axb4 Red8 28. Rd2 Qa7 29. Qc2 {next d5 is good for White.} Qa6 30. Rbd1 Bc4 31. Ng3 Be7 32. Rb1 Bf6 (32... Bd5 $17) 33. Rbd1 (33. Ne4 $11) 33... Be7 34. Rb1 $1 Qb5 35. Qc3 Be6 36. Rbb2 Ra8 37. Rb1 Ra4 {[%cal Ra4b4]} 38. Rdb2 b6 39. Rc1 Rc7 {[%cal Ra4b4]} 40. Bd2 Rc8 41. Re1 Bf8 42. Rc1 Qa6 43. Qe3 Ra1 (43... Re8 {is interesting.} 44. Qe4 Bd7 45. Qc2 Ra3 46. Nf1 b5) 44. Rbc2 Rxc1+ 45. Rxc1 Qb5 46. Qc3 Bd5 47. Re1 Rd8 48. Rc1 g6 49. Nf1 Bg7 50. Be3 Ra8 51. Bd2 Ra2 $36 {[%mdl 2048] White is under strong pressure.} 52. Ne3 Be6 (52... Qe2 $17 53. Be1 Be4) 53. Ra1 ({White should play} 53. Ng4 $1 $15) 53... Rxa1+ $17 54. Qxa1 Qd3 55. Bc3 {[#]} c5 $1 {[%mdl 512]} 56. bxc5 (56. d5 $1 $15 Qxc3 57. Qxc3 Bxc3 58. dxe6 fxe6 59. b5) 56... bxc5 57. d5 Qxc3 ({Much worse is} 57... Bxc3 $6 58. Qa8+ Kh7 59. dxe6 $11) 58. Qa8+ (58. Qxc3 $17 Bxc3 59. dxe6 fxe6 60. Kf1) 58... Kh7 $19 59. dxe6 fxe6 $2 (59... Qe1+ $19 60. Nf1 Qxe6) 60. Qc6 $1 $11 Qe1+ 61. Kh2 $2 {[%mdl 8192] [#]} (61. Nf1 $11) 61... Be5+ {Accuracy: White = 43%, Black = 50%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.14"]
[Round "6.17"]
[White "Siddeley, Hugh"]
[Black "Coppola, Claudio"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1968"]
[BlackElo "2209"]
[Annotator "TA"]
[PlyCount "168"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,168,18,54,-6,0,-59,37,38,32,28,40,42,83,85,101,99,128,106,114,99,100,79,72,64,67,26,112,108,72,0,0,-47,16,-39,-39,-79,-40,-52,-14,-22,57,0,318,296,709,60,208,224,195,0,40,43,37,33,48,0,37,-35,0,-7,62,64,130,0,0,0,0,0,0,0,0,0,29,-20,96,0,8,-29,0,-3,0,-8,88,20,33,31,27,-142,-148,-144,-72,-151,0,0,0,0,0,-5,0,-2,0,0,0,-2,0,-8,-8,-1000,-967,-1308,-1135,-1728,-1443,-1779,-1608,-1681,-1600,-1954,-1503,-29956,-29957,-5931,-5595,-29959,-29960,-29960,-29961,-29943,-29945,-29945,-5915,-5919,-4125,-5244,-4918,-29968,-29969,-29969,-1381,-29969,-29971,-29959,-29962,-29972,-29974,-29972,-29975,-29976,-29976,-29971,-29975]} 1. e4 c5 2. d4 d6 3. Nf3 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rb8 11. g4 {B78: Sicilian Dragon: Yugoslav Attack, 9 Bc4 Bd7 10 0-0-0 Rc8} (11. Kb1 $14) (11. Bb3 Na5 12. h4 b5 13. h5 Nc4 14. Bxc4 bxc4 15. hxg6 fxg6 16. Bh6 Qb6 17. b3 Bxh6 18. Qxh6 Qa5 19. Kb2 Rfc8 20. Nd5 cxb3 21. axb3 Kf7 22. Qd2 Qxd2 23. Rxd2 {½-½ (46) Fedoseev,V (2724)-Nakamura,H (2787) Moscow 2018}) 11... b5 $11 12. Bb3 (12. Nxc6 $11 Bxc6 13. Bb3) 12... Na5 (12... Ne5 $15) 13. Kb1 {White is slightly better.} Nc4 14. Bxc4 $1 bxc4 15. Ka1 Qc7 16. h4 Rfc8 17. h5 Qb7 {[%csl Gb8][%cal Rb7b2]} 18. Rb1 $1 Rc5 19. hxg6 fxg6 20. Nde2 $146 Ra5 21. Bd4 Qb4 22. b3 Bf8 (22... g5 $11) 23. g5 Nh5 24. Rhd1 (24. Qe3 $16 Rc8 25. Nd5 (25. Bxa7 Ng3 $17)) 24... Rc8 25. f4 Rc6 (25... Bg4 $15 26. Nd5 Qxd2 27. Rxd2 e6 28. Nf6+ Nxf6 29. Bxf6 cxb3 30. Rxb3 Rac5) 26. bxc4 (26. Qe3 $11) 26... Qxc4 $15 27. Qd3 Be6 {[%cal Ra5a2]} (27... Bg4 $5 {[%cal Rg4e2]} 28. Qxc4+ Rxc4 $17) 28. Rb2 Rca6 29. Kb1 Qc6 (29... Qc8 $11) 30. Rf1 (30. f5 $1 $14 Bc4 31. Qh3) 30... Ra3 $2 {[%mdl 8192]} (30... Bc4 $11 31. Qh3 e6) 31. f5 $1 $18 {[%cal Rf5e6]} Bc4 $2 {[#]} (31... gxf5 32. Qh3 Bxa2+ 33. Rxa2 Rxa2 34. Nxa2 Qb5+ 35. Qb3+ Qxb3+ 36. cxb3 fxe4) 32. Qd2 $2 (32. fxg6 $1 $18 {[%mdl 512]} hxg6 33. Rxf8+ $1 {[%mdl 512]} (33. Qf3 Qe8 $11) 33... Kxf8 34. Qf3+ Bf7 35. Rb8+ Qe8 36. Rxe8+ Kxe8 37. e5) 32... R6a5 (32... Qc8 $14) 33. fxg6 hxg6 34. Rf2 $2 (34. Rb8 $18 Bf7 35. e5 dxe5 36. Bxe5 Rxe5 37. Qd8) 34... e5 35. Rb8 Bf7 {Strongly threatening ...Qc7.} 36. Be3 Qc7 (36... Bxa2+ $2 37. Nxa2 Rb5+ 38. Rxb5 $18) 37. Rb2 (37. Rb3 $5) 37... Qc8 38. Nd5 (38. Rb3 $14) 38... Qc4 (38... Bxd5 $5 39. exd5 Ng7 $15) 39. Ndc3 {[#]} Qa6 (39... Ng3 $1 $11 {[%mdl 512]} 40. Nxg3 Rxc3) 40. Nc1 $1 $14 Qc4 {[#]} (40... Qc6 $14 41. Rb3 Qc7) 41. Nb3 (41. Rb7 $1 $16 Qxc3 42. Qxc3 (42. Rbxf7 Bg7 $11) (42. Rfxf7 Qxd2 43. Bxd2 Rb5+ 44. Rxb5 Kxf7 $11) 42... Rxc3 43. Bd2 {[%mdl 64] Skewer} (43. Rbxf7 Rc8 $15)) 41... Ra6 $11 {[%cal Ba5a6,Ba6c6,Bc6c3][%mdl 32] Threatens to win with ...Rc6.} 42. Qd3 Rc6 43. Nd5 Bxd5 44. exd5 Qxd3 45. cxd3 Rc3 46. Nc1 Ng3 (46... Rc8 $11 {keeps the balance.}) 47. Rb7 (47. Rf6 $16 Rc8 48. Bd2 (48. Rxg6+ Kh7 $16)) 47... Nf5 $132 {[%mdl 2048] Black is not keeping still} 48. Bxa7 Ra5 49. Rc2 Rxc2 50. Kxc2 Rxd5 (50... Be7 $1 $11) 51. Ne2 ({White should try} 51. Nb3 $16 {And now Kc3 would win.} Ne7 52. a4) 51... Be7 52. Nc3 Ra5 53. Ne4 $2 (53. Kb3 $11) 53... Rxa2+ $17 54. Kb3 Rg2 (54... Ra6 $142 55. Bb6 Kf7) 55. Kc4 {[#]} ({Better is} 55. Bb8) 55... Bxg5 $2 (55... Kf7 $1 $17 {aiming for ...Ke6.} 56. d4 exd4 57. Bxd4 Ke6) 56. Kd5 $11 Be7 {Black wants to play ...Kf7.} 57. Ke6 Rh2 58. Bb8 Rh7 59. Rc7 Nd4+ 60. Kd5 Nf5 61. Ke6 Rf7 62. Rc8+ Kg7 {White should prevent ...g5.} 63. Nxd6 $2 {[%mdl 8192]} (63. Rc7 $11) 63... Bxd6 $19 64. Bxd6 Rf6+ 65. Kxe5 Nxd6 {[%mdl 4096] Endgame KRN-KR} 66. Rc7+ Nf7+ 67. Ke4 g5 68. d4 g4 69. Rc3 Ng5+ 70. Ke5 Kg6 {( -> ...Rf5+)} 71. d5 Rf5+ 72. Kd4 Rf4+ 73. Ke5 Re4+ 74. Kd6 Rd4 (74... Kf5 $142 75. Rd3 Kf4 76. Rd1 g3 77. Kc6 Nf3 78. d6 Rd4 79. Rc1 g2 80. Kc7 Ne5 81. Ra1 Kg3 82. Ra3+ Kh2 83. Ra1 g1=Q 84. Rxg1 Kxg1 85. Kd8 Rxd6+ 86. Kc7 Rc6+ 87. Kb7 Rd6 88. Ka7 Re6 89. Kb8 Kf2 90. Kc8 Ke3 91. Kc7 Kd4 92. Kd8 Kc5 93. Kc7 Rb6 94. Kd8 Kd6 95. Kc8 Rb4 96. Kd8 Rb8#) 75. Ke5 Nf3+ 76. Ke6 Re4+ 77. Kd7 Ne5+ 78. Ke6 Nc4+ 79. Kd7 Kf5 {Black mates.} 80. Kc6 Kf4 81. d6 g3 82. d7 Ne5+ 83. Kc7 {[#]} Nxd7 $1 84. Kxd7 g2 {Accuracy: White = 31%, Black = 43%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.18"]
[White "Araque, Jairo"]
[Black "El Ters, Antouan"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1961"]
[BlackElo "2205"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,124,24,17,14,6,10,6,6,6,7,0,5,12,18,19,15,9,158,146,168,66,106,96,101,38,47,49,67,68,118,0,0,0,29,-34,-6,-34,-29,-60,-37,-40,-43,-38,0,0,8,7,0,0,13,22,17,16,35,0,0,0,0,0,0,0,0,0,0,0,54,57,397,0,0,0,0,0,0,0,0,0,0,0,30,0,0,0,0,0,0,0,0,0,0,0,0,-235,-248,-979,-881,-1001,-997,-1886,-1808,-2017,-1982,-3142,-2607,-2328,-1882,-1657,-1558]} 1. d4 Nf6 2. Bf4 b6 3. e3 Bb7 4. Nf3 g6 5. Be2 Bg7 6. Nbd2 d6 7. h3 c5 8. c3 Nbd7 9. O-O O-O 10. Qb3 e5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} (10... a6) 11. dxe5 dxe5 12. Bh2 e4 $1 {[%cal Re4f3] The position is equal.} 13. Ne1 $1 Qe7 14. Rd1 $146 ({Predecessor:} 14. Nc2 Ne5 15. Bxe5 Qxe5 16. Rfd1 Rad8 17. a4 Bc6 18. Na3 {0-1 (52) Engelman,T (1828)-Zupancic,U (1907) Otocec 2016}) 14... Ne5 15. Nc4 Nxc4 16. Bxc4 {And now Bd6 would win.} Rfd8 17. Nc2 Nd7 (17... Ne8 $11 {remains equal.}) 18. Bc7 Rdc8 {[#]} 19. Bd6 (19. Bxf7+ $1 $18 {[%mdl 512]} Qxf7 20. Qxf7+ Kxf7 21. Rxd7+ Kg8 22. Be5 Bxe5 23. Rxb7) 19... Qf6 20. a4 Bc6 21. Ba6 (21. Na3 $16) 21... Re8 $14 22. Rd2 Qf5 23. Rfd1 Be5 24. Bxe5 (24. Na3 $1 $16) 24... Nxe5 $11 25. Rd6 Re7 26. Ne1 ({Better is} 26. Na3 $11) 26... Rae8 27. Qc2 Re6 28. Rd8 Qg5 29. Rxe8+ Rxe8 30. Bb5 Nf3+ 31. Kf1 Nxe1 (31... Nh2+ {is more complex.} 32. Kg1 Nf3+) 32. Rxe1 Bxb5+ 33. axb5 {[%mdl 4096] Endgame KQR-KQR} Qd5 34. Rd1 Qc4+ 35. Qe2 Qe6 36. Qd2 Qb3 37. Qd7 $36 {[%mdl 2048] White fights for an advantage.} Re7 38. Qd8+ Kg7 39. Kg1 Re6 40. Rd2 Qxb5 41. Qb8 a5 (41... h5 $11) 42. Rd8 $1 $14 {[%mdl 1024] White has compensation.} Qc6 $2 {[%mdl 8192] [#]} (42... Kf6 $1 $14) 43. Rg8+ $2 ({White has to play} 43. g4 $1 $18 h6 44. h4) 43... Kf6 $11 44. Qf8 Re7 45. Qg7+ Ke6 46. Qxh7 Re8 47. Rxe8+ Qxe8 {KQ-KQ} 48. Qh4 Kd6 49. Qf4+ Kd5 50. b3 b5 {[%cal Bb6b5,Bb5a4,Ba4a3,Ba3a2][%mdl 32] White must now prevent ...a4.} 51. Qc7 a4 52. Qb7+ Kd6 53. bxa4 bxa4 54. Qa6+ Qc6 55. Qa5 $2 {[#]} (55. Qa7 $1 $11 {and White has nothing to worry.}) 55... Kd5 $1 $19 56. Kf1 $2 (56. Qd8+ Kc4 57. Qd2) 56... Kc4 {Black is clearly winning.} 57. Qa7 Kxc3 58. Qxf7 a3 59. Qg7+ Kc2 60. Qe5 Qb5+ 61. Kg1 Qb4 62. Kh2 a2 {Accuracy: White = 47%, Black = 50%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.19"]
[White "Escofet, Jaime"]
[Black "Hernandez Amura, Gilberto"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1957"]
[BlackElo "2199"]
[Annotator "RC"]
[PlyCount "66"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. b3 Nf6 2. Bb2 g6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 O-O 6. g3 Nc6 7. Bg2 d6 8. Nf3 Bg4 9. h3 Bxf3 10. Bxf3 f5 11. O-O h5 12. h4 f4 13. Rc1 fxg3 14. fxg3 Qd7 15. Bg2 Qg4 16. Ne4 Nd4 17. Kh2 Be5 18. Bf3 Qxh4+ 19. Kg2 Qe7 20. e3 Nf5 21. Kf2 c6 22. Rg1 d5 23. cxd5 cxd5 24. Nc5 Rac8 25. Nd3 d4 26. e4 Rxc1 27. Qxc1 Nd6 28. g4 Bh2 29. Rg2 Nxe4+ 30. Bxe4 Qxe4 31. Rxh2 Qxd3 32. gxh5 Re8 33. Kg1 Qg3+ 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.20"]
[White "Suarez, Pedro"]
[Black "Benoit, Rodrigo"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1950"]
[BlackElo "2189"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,53,21,12,29,14,12,11,14,3,13,5,14,1,26,-3,-5,-4,0,0,0,-4,-6,-18,0,-20,-18,-55,-64,-57,-42,-83,-46,-57,-37,-63,-24,-39,-38,-65,-73,-96,853,847]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nbd2 Bg7 6. Bd3 O-O 7. O-O Bf5 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} (7... Nbd7 8. b3 b6 9. a4 a5 10. e4 dxe4 11. Nxe4 Bb7 12. Bb2 c5 13. Re1 Rc8 14. Qe2 cxd4 15. Bxd4 Nc5 16. Bxc5 bxc5 {1-0 (59) Nakamura,H (2785)-Caruana,F (2808) Stavanger 2017}) 8. Qc2 e6 9. b3 Re8 {The position is equal.} 10. Re1 $146 ({Predecessor:} 10. Bb2 Na6 11. a3 c5 12. cxd5 Bxd3 13. Qxd3 Nxd5 14. Qe2 cxd4 15. Nxd4 {1-0 (31) Porat,M (2005)-Gross,S (2275) Brno 2006}) 10... Nbd7 11. Bb2 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 12. Rad1 Qe7 13. e4 Nxe4 14. Nxe4 dxe4 15. Bxe4 Bxe4 16. Rxe4 a4 17. Re3 Qb4 18. a3 axb3 19. Qe2 Qa4 20. Nd2 c5 21. Nxb3 cxd4 22. Bxd4 Bxd4 (22... Bf8 {with more complications.} 23. Bb2 Nb6 24. c5 Nd5 25. Rf3 Bg7) 23. Nxd4 Nc5 24. Rb1 Red8 25. Nb5 Rd7 26. Nc3 Rad8 $2 {[%mdl 8192] [#]} ({Not} 26... Qxa3 27. Nd5 $16) (26... Qc6 $17 27. Qb2 Qa6) 27. Nxa4 {Accuracy: White = 42%, Black = 24%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.21"]
[White "Ramos Correa, Gabriel"]
[Black "Hurtado Bahamonde, Rodrigo"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "1920"]
[BlackElo "2172"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,48,22,25,-11,-4,-16,-17,-48,-5,-57,-54,-55,-47,-50,-60,-104,-88,-182,-175,-262,-252,-263,-250,-342,-337,-300,-306,-310,-302,-472,-479,-627,-594]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Bd6 6. Bd3 Nbd7 7. O-O O-O 8. e4 dxc4 9. Bxc4 e5 $1 10. dxe5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (10. Be3 exd4 11. Bxd4 Qc7 12. Kh1 Ne5 13. Nxe5 Bxe5 14. Bxe5 Qxe5 15. f4 Qc5 16. Bd3 Rd8 17. Qf3 Be6 18. h3 Rxd3 19. Qxd3 {½-½ (37) Giri,A (2769)-Ding,L (2759) Shenzhen 2017}) 10... Nxe5 11. Nxe5 Bxe5 12. Qxd8 {The position is equal.} Rxd8 13. f3 ({White should try} 13. Re1 $11) 13... b5 $15 14. Be2 Bd4+ 15. Kh1 Be6 $36 {[%mdl 2048] Black has some pressure.} 16. Bg5 $146 ({Predecessor:} 16. g4 Nd7 17. Rd1 Bc5 {0-1 (49) Vetokhin,I (2031)-Tarasov,O (2264) Moscow 2018}) 16... h6 17. Bxf6 (17. Bh4 $17) 17... Bxf6 $19 18. f4 (18. e5 {might work better.} Bxe5 19. f4) 18... b4 {[%cal Bb5b4,Bb4c3,Bc3c2][%mdl 32]} 19. Na4 Rd2 {[%mdl 64] [#] Double Attack} 20. Bf3 Bxb2 21. Rad1 Bc3 22. Nxc3 bxc3 23. Rc1 (23. Kg1 {is a better defense.} Rad8 24. Rxd2 cxd2 25. Kf2) 23... c2 24. e5 {White hopes to continue with Be4.} Bd5 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.22"]
[White "Rodriguez Farias, Eduardo"]
[Black "Curi, Gabriel"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1935"]
[BlackElo "2159"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,76,-2,0,2,0,62,66,47,0,37,54,67,8,43,0,-40,-137,-142,-233,-216,-292,-280,-342,-338,-345,-341,-341,-325,-342,-351,-342,-335,-454,-463,-509,-513,-504,-508,-516,-486,-533,-497,-491,-474,-523,-449,-499,-510,-532,-531,-672,-673,-960,-905,-2641,-2296,-29998,-29999]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. O-O Rc8 8. Na3 cxd4 9. cxd4 Nf5 10. Nc2 Qb6 11. b3 Nb4 {C02: French: Advance Variation} 12. Ne3 Bb5 $146 ({Black should play} 12... Nxe3 $11 13. fxe3 (13. Bxe3 Be7 $11) 13... Be7) ({Predecessor:} 12... Be7 13. a3 Nc6 14. Nxf5 exf5 15. b4 h6 16. Bb2 O-O 17. Qd2 Rfe8 18. h4 Nd8 19. Rfc1 {½-½ (46) Sebag,M (2510)-Lysyj,I (2593) Moscow 2008}) 13. Nxf5 exf5 {White is slightly better.} 14. e6 f6 15. Bxb5+ Qxb5 16. Nh4 (16. Bd2 $14) 16... g6 $11 17. Nxf5 ({White should try} 17. a3 $14 Nc2 18. Ra2 Qxb3 19. Rb2) 17... gxf5 $15 18. Qh5+ (18. a3 $1 $15 Nc2 19. Ra2) 18... Kd8 $17 19. Qxf5 {[#]} (19. Ba3 $17 {keeps fighting.}) 19... Be7 $1 $19 20. Bh6 Qd3 21. Qh5 {intending a3.} Qg6 ({Less strong is} 21... Qxd4 22. Rfe1 $17) 22. Qh3 Rg8 23. g3 Rc2 24. Be3 h5 ({Don't do} 24... Nxa2 25. f3) 25. a3 Nc6 26. Qg2 Qf5 27. Rfc1 Rxc1+ {[%mdl 64] [#] Overworked Piece} 28. Rxc1 Bxa3 29. Rd1 h4 30. Bf4 Ke7 31. Qf3 Ke8 32. Qe2 Be7 33. Be3 a6 34. Rc1 Rh8 35. Bf4 Nxd4 36. Rc8+ Bd8 37. Qb2 Qe4 {( -> ...Qe1+)} 38. e7 Qe1+ {Accuracy: White = 14%, Black = 80%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.23"]
[White "Munoz Perez, Rolando"]
[Black "Durante, Aurelio"]
[Result "0-1"]
[ECO "D16"]
[WhiteElo "2130"]
[BlackElo "1941"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,56,10,13,32,31,32,31,24,0,0,0,0,-6,1,3,5,-41,-36,-41,-12,-47,-35,-33,-35,-58,-60,-85,-86,-81,-97,-87,-81,-85,-78,-125,-138,-374,-324,-390,-372,-406,-350,-639,-276,-1423,-1399]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 e6 6. e3 Bb4 7. Bxc4 O-O {D16: Slav Defence: 5 a4: Lines with 5...Bg4 and 5...Na6} (7... b6 8. O-O O-O 9. Qe2 a5 10. e4 Ba6 11. e5 Nd5 12. Ne4 h6 13. Rd1 Ra7 14. b3 Qe7 15. Ra2 {1-0 (28) Bareev,E (2667)-Tosic,M (2439) Rijeka 2010}) 8. O-O Nbd7 9. Qb3 a5 {White is slightly better.} 10. Rd1 Qe7 11. Na2 $146 ({Predecessor:} 11. e4 e5 12. Qc2 exd4 13. Nxd4 Ne5 14. Bf1 {1-0 (68) Taras,I (2252)-Colompar,A ICCF email 2006}) 11... Bd6 12. Nc3 Bb4 13. Bd2 e5 14. Be1 e4 15. Nd2 Nb6 16. Be2 Be6 17. Qc2 Bf5 18. Na2 Bd6 19. Qb3 Bc7 20. Nc3 Rfe8 21. Rac1 h5 $40 {[%mdl 128] Black has strong attack.} 22. Nf1 h4 23. f4 exf3 $1 24. gxf3 $2 (24. Bxf3 $17 {was forced.} h3 25. g3) 24... Bh3 25. e4 Nh5 {[#] ...Qg5+ is the strong threat.} 26. Bd2 {If only White now had time for e5....} Qf6 ({Less strong is} 26... Qd6 27. Be3 $19) 27. Kh1 $2 (27. Kf2 Bxf1 28. Kxf1) 27... Nf4 (27... Bf4 $142 28. Ne3 (28. Qxb6 {leads to mate.} Qg5 29. Ne3 Ng3+ 30. hxg3 Qxg3 31. Qxb7 Qh2#) 28... Qxd4) 28. Ne3 $2 (28. Bxf4 Qxf4 29. Qc2) 28... Nxe2 {[%mdl 64] Discovered Attack. Accuracy: White = 28%, Black = 60%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.24"]
[White "Baudel, Simon"]
[Black "Arcos Facio, Mateo"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1847"]
[BlackElo "2107"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,58,66,71,14,27,13,10,-9,30,-7,0,-11,7,6,19,0,30,27,70,35,50,43,81,32,27,27,66,50,44,13,19,15,24,25,41,39,43,40,66,53,70,47,47,39,39]} 1. e4 e5 2. Ne2 Bc5 3. d4 exd4 4. Nxd4 Nc6 5. Nb3 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Nf6 {C45: Scotch Game} 8. Nc3 O-O {LiveBook: 9 Games} (8... d6 9. O-O-O O-O 10. f3 a5 11. Nd4 Nxd4 12. Qxd4 Be6 13. Bc4 Re8 14. Bxe6 Rxe6 15. Rd2 {1-0 (86) Jobava,B (2706)-Petrosian,T (2643) Plovdiv 2012}) 9. Bd3 (9. f3 $16) 9... d6 {The position is equal.} 10. O-O a5 $146 ({Predecessor:} 10... Re8 11. f3 Be6 12. Nd5 Ne5 13. c4 c6 14. Ne3 Qb6 15. Kh1 {0-1 (54) Agoston,A (2009)-Nestorovic,L (2357) Kragujevac 2011}) 11. a3 Be6 12. Nc1 {[%cal Bb3c1,Bc1e2,Be2d4][%mdl 32]} Ne5 13. N1e2 Nc4 (13... c6 {is more complex.} 14. Nf4 b5 15. Be2 Qc7 16. Qd4 Rad8) 14. Bxc4 Bxc4 15. b3 Ba6 16. Rfe1 Nd7 17. Qf4 Re8 18. Nd4 Qf6 19. Qxf6 (19. Qd2 {is interesting.} c6 20. Nf5 d5 21. Rad1 b5 22. Ng3) 19... Nxf6 20. f3 c6 21. Rad1 g6 22. Nde2 d5 23. exd5 Nxd5 24. Nxd5 cxd5 25. Kf2 {White is slightly better.} Rac8 26. Nd4 a4 27. Rxe8+ ({Much weaker is} 27. bxa4 Rxe1 28. Kxe1 (28. Rxe1 Rc4 $11) 28... Rc4 $11) 27... Rxe8 28. b4 {[#] And now b5 would win.} Bc4 29. Re1 Kf8 {Precision: White = 33%, Black = 26%.} 1/2-1/2

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.25"]
[White "Guerrero, Alvaro"]
[Black "Avedisian, Alexander"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2096"]
[BlackElo "1921"]
[Annotator "NA RC"]
[PlyCount "59"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. d5 c5 7. Nge2 e6 8. Ng3 exd5 9. cxd5 a6 10. a4 Nbd7 11. Be2 Ne5 {A65: Modern Benoni: 6 e4} (11... Ne8 12. Bf4 Rb8 13. O-O c4 14. Bxc4 Qb6+ 15. Rf2 Bd4 16. Qd2 Ne5 17. Bf1 Bxf2+ 18. Qxf2 Qxf2+ 19. Kxf2 {½-½ (32) Carlsen,M (2835)-Nepomniachtchi,I (2763) Wijk aan Zee 2019}) 12. O-O Nh5 $146 ({Predecessor:} 12... h5 13. Bg5 Rb8 14. f4 Neg4 15. e5 dxe5 16. fxe5 Nxe5 17. Nce4 Ned7 18. Qc1 Qe8 19. Rxf6 {1-0 (37) Gupta,A (2619)-S,M (2204) Kolkata 2018}) 13. Nxh5 gxh5 14. Kh1 f5 15. exf5 Bxf5 16. a5 Kh8 17. Ra4 Rg8 18. Ne4 Bxe4 19. Rxe4 ({Don't play} 19. fxe4 $6 Rf8 $11) 19... Qxa5 20. Rh4 Bf6 21. Rxh5 Qc7 22. f4 Qg7 23. g3 Ng6 24. Bd3 Raf8 25. Bf5 $18 Re8 26. Qc2 Bd4 27. Be6 Rgf8 28. f5 Qe5 29. Qg2 b5 30. Rxh7+ 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.26"]
[White "De la Torre, Andres"]
[Black "Sosa Macho, Juan Manuel"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1634"]
[BlackElo "2079"]
[Annotator "NA RC"]
[PlyCount "22"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. Nf3 Nc6 2. g3 e5 3. d3 d5 4. Bg2 Bg4 5. c3 Be7 6. Nbd2 Qd7 7. e4 dxe4 8. dxe4 O-O-O 9. h3 Be6 10. Qa4 Kb8 11. Nb3 Qd1# {Nbd2 Qxf3 Nxf3 Rc8 Nd2} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.27"]
[White "Meza, Anahi"]
[Black "Hart, Alexander"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2058"]
[BlackElo "1881"]
[Annotator "NA RC"]
[PlyCount "41"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

{[%evp 23,41,47,61,32767,32767,337,341,259,470,344,333,344,444,462,553,32767,32767,609,864,884]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 b5 9. Be2 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} a6 (9... O-O 10. O-O Bb7 11. Rd1 Qc7 12. a3 a6 13. b4 a5 14. Bd2 axb4 15. axb4 Nd5 16. Rac1 Nxb4 17. Qb1 Be7 18. Nxb5 Qa5 19. Rc4 Qxb5 20. Bxb4 Bxb4 21. Rxb4 Qxe2 22. Rxb7 {1-0 (76) Sasikiran,K (2666)-Pourramezanali,A (2537) Hamedan 2018}) 10. O-O Bb7 11. e4 e5 12. dxe5 Nxe5 13. Nh4 Nd5 $146 ({Predecessor:} 13... Nfg4 14. Nf5 g6 15. Nxd6+ Qxd6 16. g3 Nf6 {1-0 (40) Tarun,K (2120)-Larmet,N (1835) Mumbai 2019}) 14. Nf5 ({Weaker is} 14. exd5 Qxh4 15. f4 cxd5 $18) 14... Nb4 15. Qb3 ({Less strong is} 15. Nxg7+ Kf8 $16) 15... g6 $2 (15... Bf8 16. Bf4 Nbd3) 16. Nxd6+ Qxd6 17. Rd1 Ned3 18. a3 c5 19. axb4 c4 {[#]} 20. Bxd3 $1 O-O-O 21. Bxc4 $18 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.28"]
[White "Sarquis, Maria Belen"]
[Black "Larrea, Daniela"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2164"]
[BlackElo "1770"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,10,4,7,6,20,43,6,27,27,35,14,62,37,53,41,75,37,45,34,98,118,103,118,118,98,104,88,107,107,119,114,118,111,223,223,256,188,262,258,297,306,296,305,304,311,318,313,297,300,467,274,284,320,361,361,665,654,1019,700,840,835,1487,1420,2110,2020,29983,29984,29983]} 1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d6 5. Bg2 Nf6 6. O-O Be7 {LiveBook: 451 Games} 7. a4 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6} (7. c3 O-O 8. Nbd2 {½-½ (8) Morozevich,A (2656)-Chigaev,M (2593) Cheliabinsk 2018}) 7... O-O 8. Re1 Qc7 9. c3 {White is slightly better.} Rb8 10. d4 $146 ({Predecessor:} 10. Na3 a6 11. d4 cxd4 12. cxd4 Nd7 13. Be3 b6 14. Rc1 d5 15. exd5 exd5 16. Bf4 Bd6 {1-0 (35) Schneider,H (2240)-Axnich,H Germany 1995}) 10... cxd4 11. cxd4 e5 12. h3 Bd7 13. Nc3 a6 14. Bg5 Qd8 15. Qd2 Nh5 (15... h6 $14 16. dxe5 Nxe5 17. Nxe5 dxe5 18. Bxf6 Bxf6) 16. Bxe7 $16 Qxe7 17. Nd5 Qd8 18. a5 Nf6 19. Nb6 Bc8 20. Rad1 Qe7 21. Qc3 Re8 22. Qa3 Nd7 {[#]} (22... Qf8 $16) 23. Nc4 $1 $18 exd4 {White should prevent ...Nde5.} 24. Nxd4 Nde5 (24... Nxd4 {was necessary.} 25. Rxd4 Ne5 26. Nxd6 Rf8) 25. Nxd6 Rd8 26. Nxc6 Nxc6 27. e5 {[#] aiming for Bxc6.} Qc7 28. b4 Be6 29. Qc3 Rd7 30. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} Re7 (30... f6 {was called for.} 31. Nxb7 Qxb7 32. Rxd7 (32. Qxc6 Qxc6 33. Bxc6 Rxd1 $16) 32... Qxd7) 31. Ne4 (31. f5 $142) 31... Na7 32. Nc5 Nb5 33. Qf3 h6 $2 (33... Bf5 34. g4 Bc8) 34. f5 Bd7 35. Qf4 ({Weaker is} 35. Nxd7 Rxd7 36. e6 fxe6 $18) 35... Bc6 36. f6 Ree8 37. fxg7 Kxg7 38. Qf6+ Kh7 39. Bxc6 Qxc6 {Precision: White = 80%, Black = 29%.} 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.29"]
[White "Visillac, Alejandro"]
[Black "Granara Barreto, Sebastian"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1803"]
[BlackElo "2134"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,52,-21,-17,-43,-45,-58,-60,-70,-71,-60,-18,-16,-12,-26,-12,-91,-47,-77,-62,-92,-91,-133,-137,-136,-54,-112,-29,-35,-34,-52,-36,-119,-127,-202,-185,-186,-190,-199,-156,-240,-171]} 1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 e5 6. O-O Nge7 7. Nbd2 O-O 8. Nb3 {A04: Unusual lines after 1 Nf3 and King's Indian Attack} (8. Nc4 d5 9. exd5 Nxd5 10. Re1 Re8 11. Bg5 f6 12. Bd2 Be6 13. Qc1 Qc7 14. Bh6 Rad8 15. Bxg7 Kxg7 16. h4 h5 17. Nfd2 b5 18. Ne3 Nxe3 19. Rxe3 {0-1 (33) Rombaldoni,D (2481)-Vocaturo,D (2620) Chianciano Terme 2018}) 8... d6 9. Be3 h6 $146 ({Predecessor:} 9... f5 10. Qd2 Nd4 11. c3 Ne6 12. Bh6 f4 13. Bxg7 Kxg7 14. d4 c4 15. Nc1 Qc7 {0-1 (64) Stakanova,A-Burdalev,K Kiev 2002}) 10. Nc1 {Black is slightly better.} f5 11. Ne2 Nd4 12. Nfxd4 cxd4 13. Bd2 Qb6 14. Qc1 (14. a4 $11 {keeps the balance.}) 14... Kh7 15. Rb1 Be6 16. c4 fxe4 17. Bxe4 d5 18. cxd5 Rac8 (18... Nxd5 $17 {...Nf6 is the strong threat.} 19. Ra1 Rad8) 19. Qe1 (19. dxe6 $15 Rxc1 20. Nxc1) 19... Bxd5 ({Black should play} 19... Nxd5 $17 {Threatens to win with ...Nf6.} 20. f4 Ne3) 20. Nc1 $11 Be6 21. Bb4 Rf7 $36 {[%mdl 2048] Black is more active.} 22. Bd2 ({White should try} 22. Bxe7 $15 Rxe7 23. Qd1) 22... Nd5 23. Ne2 (23. h4 $17) 23... Nf6 $19 {Black is clearly better.} 24. Bg2 Bxa2 25. Rc1 Rxc1 26. Qxc1 (26. Nxc1 $17 {keeps fighting.} Bd5 27. Qxe5) 26... Be6 {Accuracy: White = 30%, Black = 49%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.30"]
[White "Martinez, Carlos Alejandro"]
[Black "Pichuaga, Juan Pablo"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2503"]
[BlackElo "2027"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,137,50,18,37,0,29,0,11,0,0,0,0,6,4,-1,0,-31,-30,-37,0,-25,-23,-22,-2,-13,-18,-88,-102,-96,-98,-96,-100,-98,-95,-115,-90,-106,-103,-87,-80,-80,-79,-79,-74,-131,-84,-96,-96,-105,-109,-108,-79,-87,-71,-104,-67,-100,-95,-98,-98,-87,-91,-225,-217,-217,-219,-254,-258,-255,-268,-264,-199,-233,-188,-240,-241,-206,-212,-249,-245,-284,-200,-197,-68,-65,-77,-82,-70,-96,-82,-89,-85,-91,-31,-31,-31,-168,-156,-166,-156,-179,-31,-400,-356,-328,-31,-31,-31,-35,-8,-707,-538,-492,-474,-3725,-2475,-2512,-2306,-29969,-29968,-29974,-29975,-29978,-29979,-29977]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. Bd2 Bf5 7. Bc4 e6 8. h3 Qc7 {B01: Scandinavian Defence} (8... Nbd7 9. O-O Bb4 10. a3 Bxc3 11. Bxc3 Qc7 12. Re1 O-O 13. Qe2 b5 14. Bb3 a5 15. Ne5 a4 16. Ba2 Rfe8 17. Rac1 Ne4 18. Nxd7 Nxc3 19. Nf6+ gxf6 20. bxc3 {½-½ (67) Mamedov,R (2660)-Nakamura,H (2741) Moscow 2010}) 9. Bb3 Nbd7 10. Qe2 Bd6 {The position is equal.} 11. g4 Bg6 12. Nh4 O-O-O 13. O-O-O Bf4 14. Nxg6 hxg6 15. Qf3 $146 (15. Be3 {is more complex.} g5 16. Kb1 Nf8 17. a3 Ng6 18. Na4) ({Predecessor:} 15. Kb1 Bxd2 16. Qxd2 Rh4 {0-1 (62) De Silva,C (1544)-Ranasinghe,S (1783) Malabe 2015}) 15... Bxd2+ 16. Rxd2 Nb6 17. Ne2 g5 18. Rdd1 Rh4 19. Qe3 Rdh8 20. Rdg1 {[#]} (20. Rhf1 $11 {remains equal.}) 20... Nxg4 $1 $17 {[%mdl 576] Pin} 21. Qf3 (21. Rxg4 Rxg4) 21... Nh6 22. Rxg5 Nf5 23. Rgg1 g6 24. c3 Nd5 25. Bxd5 cxd5 26. Rg4 R4h7 27. Kb1 Nd6 28. Nc1 Nc4 {Threatens to win with ...Nd2+.} 29. Qd3 (29. Ka1 $142) 29... Qe7 30. Rg3 Qf6 31. b3 Nd6 32. Rf3 Nf5 33. Ne2 Qg5 34. Rg1 Qh4 35. c4 Qe4 36. cxd5 exd5 37. Rc1+ Kd7 38. Ka1 (38. Ng3 $17 {was worth a try.} Qxd3+ 39. Rxd3) 38... Qxd3 $19 39. Rxd3 Rxh3 40. Rxh3 Rxh3 {[%mdl 4096] Endgame KRN-KRN} 41. Nf4 Rf3 42. Nxd5 Nxd4 43. Ne3 Nc6 ({Less strong is} 43... Rxf2 44. Rd1 $15) 44. Rd1+ (44. Rc2 $142) 44... Ke6 45. Rd2 Ne5 46. Kb1 f5 47. Re2 b5 48. Kc2 Kd6 (48... g5 $19 49. Kd1 Rh3) 49. Rd2+ $15 Kc6 50. Kd1 Rh3 51. Rc2+ Kd6 52. Rd2+ Ke6 53. Nd5 Kf7 (53... Rh1+ $17 54. Ke2 Rc1 55. Nf4+ Kf7) 54. Nc7 b4 55. Nd5 {[#]} (55. Na6 $15) 55... a5 $1 $19 56. Nf4 Rf3 57. Nd5 Rd3 ({Black should try} 57... g5 $19 58. Nc7 Rd3) 58. Nb6 $2 {[%mdl 8192]} (58. f4 $15 Rxd2+ 59. Kxd2) 58... Rxd2+ 59. Kxd2 {KN-KN} Ke6 $2 (59... f4 $19 60. Na4 g5) 60. f4 $1 $15 {[%cal Rf4e5]} Nd7 61. Nc4 Kd5 {Hoping for ...Ke4.} 62. Ke3 $2 {[%mdl 8192] [#]} (62. Nxa5 $11 Ke4 63. Nc6) 62... a4 $1 $19 {[%cal Ra4a3][%mdl 512]} 63. Nd2 (63. bxa4 Kxc4) 63... axb3 64. axb3 (64. Nxb3 $142 Kc4 65. Kd2) 64... Nc5 65. Nf3 Nxb3 66. Kd3 Nc5+ {Black mates.} 67. Kc2 Ke4 68. Nh4 Kxf4 69. Nxg6+ {Accuracy: White = 36%, Black = 51%.} 0-1

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.31"]
[White "Augoustis Funti, Alexis"]
[Black "Areco, Antonio"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1984"]
[BlackElo "1750"]
[Annotator "NA RC"]
[PlyCount "51"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 g6 5. Bc4 Nc6 6. Nf3 Bg7 7. O-O e6 8. Qe2 Nge7 9. Bg5 {B21: Sicilian: 2 f4 and Morra Gambit} (9. e5 a6 10. a4 b6 11. Bg5 Qc7 12. Bf6 Bxf6 13. exf6 Nf5 14. Rfd1 Kf8 15. Qd2 h5 16. Bd3 Nh6 {1-0 (57) Amaral,F (1583)-Amorena,J (1703) Uruguay 2017}) 9... Qa5 ({Predecessor:} 9... O-O 10. Rfd1 Qa5 11. Bd2 {1-0 (11) Cser,A (657)-Schubert,M (800) LSS email 2009}) 10. Nd5 Nxd5 11. exd5 Nd4 12. Nxd4 Bxd4 13. Rfd1 Bg7 14. dxe6 fxe6 15. Rd5 Qb6 16. Rb5 Qc7 17. Rc1 Qd6 18. Rd5 Qb6 $1 {[#]} 19. Rb5 ({White should try} 19. b4 $1 $16) 19... Qd6 20. Qf3 $14 Qf8 21. Qe3 Qf7 22. Qc5 Bf8 23. Qe5 Bg7 24. Qd6 h6 25. Bd3 hxg5 26. Rbc5 1-0

[Event "III Copa Marcel Duchamp 2019"]
[Site "Montevideo"]
[Date "2019.02.13"]
[Round "6.32"]
[White "Soto, Nicolas"]
[Black "Chamlian, Aram"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1982"]
[BlackElo "1739"]
[Annotator "NA RC"]
[PlyCount "85"]
[EventDate "2019.02.09"]
[EventType "swiss"]
[EventCountry "URU"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. O-O Bg7 6. c3 e5 7. Re1 Ne7 8. Qa4 O-O 9. d3 d6 10. h3 h6 11. Nbd2 Be6 $15 12. d4 cxd4 13. cxd4 exd4 14. Nxd4 Bd7 15. N4f3 d5 16. Qa3 Re8 17. e5 Nf5 18. Nb3 Bf8 19. Nc5 Bxc5 20. Qxc5 Qb6 21. Qxb6 axb6 22. g4 Ne7 23. Bxh6 c5 24. a3 d4 25. Nd2 Nc6 26. f4 Be6 27. Ne4 Na5 28. Nf6+ Kh8 29. Nxe8 Rxe8 30. Rad1 Bb3 31. Rd3 Bc4 32. Rf3 d3 33. f5 Nb3 34. Rf2 gxf5 35. gxf5 Nd4 36. Bd2 Bd5 37. Re3 c4 38. Kh2 Nc2 39. Rg3 Rxe5 40. Bc3 f6 41. Bxe5 fxe5 42. f6 e4 43. Rf4 1-0

