[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.25"]
[Round "1.1"]
[White "Flores, Diego"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2566"]
[BlackElo "2439"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceVersionDate "2021.08.30"]
[SourceQuality "1"]

{[%evp 10,54,38,28,29,31,27,10,14,-163,-157,-350,-350,-350,-345,-346,-344,-339,-339,-343,-352,-365,-342,-342,-350,-403,-357,-349,-327,-461,-464,-458,-475,-511,-532,-537,-524,-515,-488,-502,-497,-682,-564,-883,-864,-1210,-955]} 1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 g6 5. Qa4 dxc4 6. Qxc4 Bg7 {A09: Réti Opening: 1 Nf3 d5 2 c4.} 7. O-O Be6 8. Qh4 h6 {[#] ...Ng4 is the strong threat. The position is equal.} 9. Nc3 $146 (9. Qa4 $11) ({Predecessor:} 9. Qa4 Qc8 10. Re1 O-O 11. d4 Nbd7 12. e4 Nb6 13. Qc2 Bh3 14. Kh1 Nfd7 15. Nc3 {0-1 (44) Nguyen,P (2360)-Strzemiecki,Z (2326) Warsaw 2009}) 9... Bg4 10. Ne5 $2 {[#]} (10. h3 $17 g5 11. Nxg5 hxg5 12. Qxg5) 10... g5 $1 $19 11. Qxg4 Nxg4 12. Nxg4 f5 13. Ne3 e6 14. b4 Nd7 15. b5 O-O 16. Ba3 Rf7 17. Rac1 Ne5 18. bxc6 bxc6 ({Wrong is} 18... Nxc6 $2 19. Bxc6 bxc6 20. Nc4) 19. d4 (19. Bc5 {keeps fighting.}) 19... Qxd4 {Black is clearly winning.} 20. Rfd1 Qb6 21. Rb1 Qa6 22. Rb3 Rd7 23. Rc1 Rad8 24. Bc5 Nc4 {[#] And now ...Nxe3 would win.} 25. h3 Nxe3 26. Bxe3 Bxc3 27. Rcxc3 Qxe2 {White got outplayed after the opening.  Weighted Error Value: White=0.80/Black=0.12 (very precise)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.25"]
[Round "1.2"]
[White "Santiago, Yago De Moura"]
[Black "Paveto, Kevin"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2494"]
[BlackElo "2462"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceVersionDate "2021.08.30"]
[SourceQuality "1"]

{[%evp 9,38,0,-10,-9,0,-11,2,1,7,5,10,11,3,0,0,0,0,5,22,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. h4 dxc4 {[%cal Oc7c5] The position is equal.} 6. e4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} c5 7. d5 O-O (7... b5 $5 {[%cal Rb5b4]}) 8. Bxc4 b5 9. Bxb5 {aiming for 0-0.} Nxe4 $1 10. Nxe4 {[#] Hoping for Nc3.} Qa5+ 11. Nc3 $1 Bxc3+ 12. bxc3 Qxb5 13. h5 Ba6 14. hxg6 (14. Ne5 $5 {[%cal Rd1g4]}) 14... fxg6 {Strongly threatening ...Qc4.} 15. Ne5 {Inhibits Qc4.} Rf5 {[#]} 16. Ng4 $146 {[#] And now Nh6+ would win.} ({Predecessor:} 16. f4 Nd7 17. a4 Qb7 18. g4 Nxe5 19. gxf5 Nd3+ 20. Kd2 Nf2 21. Qf3 Nxh1 22. Qxh1 {1-0 (30) Halvax,G (2421)-Viviani,A (2268) Chess.com INT 2019}) 16... Rh5 17. Rxh5 Qf1+ 18. Kd2 Qd3+ 19. Ke1 Qf1+ {An interesting draw.  Weighted Error Value: White=0.02 (flawless) /Black=0.03 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.25"]
[Round "1.3"]
[White "Romero Barreto, Jaime Jose"]
[Black "Tokman, Ariel"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2333"]
[BlackElo "2315"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceVersionDate "2021.08.30"]
[SourceQuality "1"]

{[%evp 9,84,0,6,-2,-11,-21,-13,-17,0,0,0,0,10,0,0,0,8,0,0,-2,12,7,63,16,53,53,45,45,31,43,54,67,78,77,132,35,45,12,18,29,10,0,0,-216,0,0,14,5,5,-15,-13,-12,0,0,19,-22,0,0,0,0,88,95,89,-464,-74,-1313,-1283,-29987,-29988,-29989,-29990,-29990,-29990,-29991,-29985,-29990,-29991]} 1. e4 c6 2. Nf3 d5 3. d3 g6 4. Nbd2 Bg7 5. g3 e5 6. b3 {B10: Caro-Kann: 2 d3 and 2 c4.} Ne7 7. Bb2 d4 {[#]} 8. c3 $146 {The position is equal.} ({Predecessor:} 8. Bg2 O-O 9. O-O c5 10. a4 Nbc6 11. Nc4 h6 12. Bc1 Be6 13. Ne1 a6 14. a5 Bxc4 15. dxc4 Nxa5 {1-0 (75) Philipowski,R (2299)-Kachiani Gersinska,K (2439) Germany 2002}) 8... O-O 9. cxd4 exd4 10. Bg2 Na6 11. O-O c5 12. Ne1 Nc7 13. Ba3 Na6 14. Nc2 Nc6 15. f4 f5 ({Black should try} 15... Be6 $11) 16. e5 (16. b4 $14 cxb4 17. Nxb4 $1 Ncxb4 18. Qb3+ Kh8 19. Bxb4) 16... Re8 17. b4 cxb4 {[#]} 18. Nxb4 Naxb4 19. Bxb4 Nxb4 20. Qb3+ Be6 21. Qxb4 Bf8 ({Black should play} 21... Rb8) 22. Qb5 ({Better is} 22. Qxb7 $16 Rc8 23. Qxa7) 22... Rc8 23. Rfc1 Rc3 24. Bxb7 Re7 {[%cal Og6g5]} 25. Bg2 Rec7 26. Nb3 {[#]} (26. Rd1 $11 {and White has nothing to worry.}) 26... Kg7 $2 (26... a6 $1 $19 27. Qxa6 Bxb3 28. Rxc3 dxc3 29. axb3 Qd4+ 30. Kh1 Be7) 27. Rd1 g5 28. Qa6 Bc8 29. Qa5 gxf4 30. gxf4 Be6 31. Qa6 Bc8 32. Qa5 (32. Qa4 {feels stronger.}) 32... Be6 {[%cal Bc8e6,Be6d5,Bd5f3][%mdl 32]} 33. Kh1 Kh8 34. Qa6 Qd7 {[#]} (34... R3c6 $11 35. Qxc6 (35. Bxc6 {leads to mate.} Bd5+ 36. Bxd5 Qxd5+ 37. Kg1 Rg7+) 35... Rxc6 36. Bxc6 Bd5+ 37. Bxd5 Qxd5+ 38. Kg1 Qf3) 35. Nxd4 $1 $16 Bd5 {[#]} 36. Nf3 $2 {[%mdl 8192]} (36. Qf6+ $1 $16 Bg7 37. Qd6 Qxd6 38. exd6 Bxg2+ 39. Kxg2) 36... Rc2 $2 (36... R7c6 $19 37. Qa5 Rc2) 37. Rg1 $2 {[%mdl 8192]} (37. Qf6+ $17 Qg7 38. Qg5) 37... R7c6 $19 {( -> ...Rxg2)} 38. Qa4 {[#]} Rxg2 $1 {[%mdl 576] Remove Defender. Black mates.} 39. Rxg2 (39. Qd1 Rxg1+) 39... Bxf3 {[%mdl 64] Discovered Attack. A strong pair of Bishops.} 40. Qb3 Rg6 {[%mdl 64] Pin} 41. Rag1 Bc5 42. Qb8+ Kg7 $1 {Weighted Error Value: White=0.70/Black=0.38} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.25"]
[Round "1.4"]
[White "Labollita, Martin"]
[Black "Fiorito, Fabian"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2388"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceVersionDate "2021.08.30"]
[SourceQuality "1"]

{[%evp 9,60,7,18,10,10,33,12,0,3,0,16,11,18,15,20,21,21,22,46,17,10,16,57,4,14,25,111,109,143,158,137,127,150,111,184,214,393,378,378,374,549,500,659,655,774,812,794,722,720,713,698,-29998,-29999]} 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. Nbd2 cxd4 6. exd4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} a6 7. c3 Bf5 {Prevents Bd3.} 8. Qb3 {The position is equal.} Na5 9. Qd1 Nc6 10. Be2 e6 11. Nh4 Be4 12. Nxe4 dxe4 13. g3 Bd6 {[#]} 14. Bc1 $146 ({Predecessor:} 14. Ng2 O-O 15. Bxd6 Qxd6 16. Ne3 Rad8 17. O-O e5 18. dxe5 Nxe5 19. Qxd6 Rxd6 20. Rfd1 Rfd8 21. Rxd6 Rxd6 22. Rd1 Rxd1+ 23. Bxd1 {1-0 (51) Simonsen,C (2232)-Pedersen,N (2244) Denmark 2020}) 14... h6 15. O-O Ne7 (15... O-O $11) 16. c4 (16. f3 $14) 16... Bc7 17. b4 g5 (17... O-O $11 {keeps the balance.}) 18. Ng2 $16 Nf5 19. Bb2 Qe7 20. Qa4+ Kf8 21. Rad1 {Strongly threatening Ne3.} Rd8 (21... h5 $16) 22. Ne3 Bf4 $2 (22... Nxe3 23. fxe3 h5) 23. Nxf5 $18 (23. gxf4 gxf4 24. Nxf5 exf5 $18) 23... exf5 24. Qa5 ({Don't take} 24. gxf4 gxf4 25. Rde1 e3 26. fxe3 fxe3 $18) 24... e3 (24... Rg8 $142 25. Qxf5 (25. gxf4 gxf4+ 26. Kh1 f3 $18) 25... Re8) 25. gxf4 exf2+ 26. Rxf2 gxf4 {[#] White must now prevent ...Rg8+.} 27. Qxf5 Rg8+ 28. Kf1 Ne4 29. Rxf4 Re8 30. Bh5 $4 {[%mdl 8192] [#]} (30. Qe5 $18 Qg5 31. Qxg5 hxg5 32. Rg4) 30... Nd2+ $1 {[%mdl 576] Deflection, Back Rank. Black used his chance.  Weighted Error Value: White=0.40/Black=0.37} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.25"]
[Round "1.5"]
[White "Pichot, Alan"]
[Black "Roselli Mailhe, Bernardo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2625"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceVersionDate "2021.08.30"]
[SourceQuality "1"]

{[%evp 23,77,103,104,1,8,-37,-28,-47,-56,-77,-69,-85,-67,-58,-79,-81,-37,-50,-35,-35,-60,-39,-41,-31,0,0,0,0,26,0,16,7,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. bxa5 dxc3 9. Qxg7 Rg8 10. Qxh7 Qc7 11. Nf3 Nbc6 12. Bf4 Bd7 13. Bg3 {C18: French: 3 Nc3 Bb4: Main line: 7 h4 and 7 Qg4.} (13. a6 $16) 13... O-O-O $11 14. Qd3 (14. Bd3 $11 {is superior.}) 14... Qxa5 $15 15. Be2 {Black has an edge.} Nf5 16. O-O Qc5 17. Rfb1 Na5 {[#]} (17... Nxg3 18. hxg3 a6 {[#]} 19. Qxa6 $1 bxa6 20. Bxa6+ Kc7 21. Rb7+ Kc8 22. Rb5+ Kc7 23. Rb7+ (23. Rxc5 Kb6 $17) 23... Kc8 24. Rab1 $14 (24. Rb5+ Kc7 $14)) 18. Bh4 $146 ({Predecessor:} 18. Kh1 Rg4 19. Rb4 Rxb4 20. axb4 Qxb4 21. Bf4 a6 22. Bc1 Nc4 23. g4 Nb2 24. Bxb2 cxb2 {0-1 (30) De Gueldre,P (2161)-Donovan,L (2200) Belgium 2009}) 18... Nxh4 19. Nxh4 a6 (19... Bc6 $17) 20. Nf3 $1 Bb5 21. Qd4 Qxd4 22. Nxd4 Bxe2 23. Nxe2 d4 24. Rd1 Nc6 25. f4 Rd5 26. h4 Kc7 {The position is equal.} (26... Rh8 $5 {[%cal Rh8h4]}) 27. Rd3 b5 28. Rad1 Kb6 29. h5 a5 30. Kf2 {[%cal Re2d4]} b4 31. axb4 axb4 32. Nxd4 Nxd4 33. Rxd4 Kc5 34. Rxd5+ exd5 $11 {KR-KR} 35. h6 {[#] Black must now prevent Rh1.} d4 {Hoping for ...Rh8.} 36. Kf3 {aiming for g4.} Rh8 37. Ke4 $1 ({Avoid the trap} 37. Rh1 $2 d3 38. Ke4 dxc2 $19) 37... Rxh6 {...Rh2 is the strong threat.} 38. Rxd4 Rh2 39. Rd5+ {Weighted Error Value: White=0.14 (very precise) /Black=0.05 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.26"]
[Round "2.1"]
[White "Diaz Hollemaert, Nahuel"]
[Black "Roselli Mailhe, Bernardo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2439"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,27,47,48,50,34,55,32,39,37]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. Re1 Re8 10. h3 a5 11. Be3 {White is slightly better.} exd4 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3.} 12. Nxd4 Nc5 {[%cal Rc5e4]} 13. f3 Qe7 14. Bf2 {[#] White took control after the opening.  Weighted Error Value: White=0.09 (flawless) /Black=0.02 (flawless)} {Predecessor:} Be6 $146 15. Nxe6 Nxe6 16. Qd2 a4 17. Rad1 Red8 18. f4 Rd7 19. Nd5 cxd5 20. exd5 Re8 21. dxe6 fxe6 {1-0 (41) Jankovec,I (2265)-Stratil,P (2270) Czechoslovakia 1992} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.26"]
[Round "2.2"]
[White "Fiorito, Fabian"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2357"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,76,0,0,0,14,12,15,3,7,4,12,0,37,28,46,19,38,27,64,10,43,6,93,4,45,27,34,-77,0,0,0,0,0,0,0,-311,-275,-545,-530,-734,-704,-739,-704,-760,-497,-456,-200,-1363,-1558,-4396,-2563,-5306,-5306]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O cxd4 9. exd4 b6 10. Bg5 Bb7 11. Qe2 Bxc3 12. bxc3 Nbd7 13. Rac1 Qc7 14. Nd2 {E54: Nimzo-Indian: Rubinstein: Main Line: 7...dxc4 8 Bxc4.} Rac8 15. Rfe1 Nd5 16. Bxd5 {The position is equal.} Bxd5 17. c4 Bb7 {[#]} 18. Qe3 $146 ({Predecessor:} 18. Qg4 f5 19. Qh4 e5 20. d5 Nc5 21. Rc3 Rf7 22. Rh3 g6 23. Rhe3 Nd7 24. Rb1 {½-½ (30) Kamanel Zamora,J (2354)-Sapundjiev,G (2404) ICCF email 2010}) 18... b5 {[%cal Rb5c4]} 19. c5 Bd5 20. f3 Qc6 21. Ne4 a5 22. a3 ({White should play} 22. Qd2 $14) 22... h6 23. Bh4 (23. Be7 $5 {[%cal Re7f8]}) 23... f6 (23... b4 $1 $11 {keeps the balance.}) 24. Nd6 (24. Qd2 $16) 24... Rb8 (24... Ra8 $11 {deserves consideration.}) 25. Bg3 $14 b4 26. a4 (26. Nc4 $14 {stays ahead.} Ra8 27. Qd3) 26... Qxa4 (26... b3 $17 27. Nb5 Rxb5 28. axb5 Qxb5) 27. c6 $11 {Black must now prevent c7.} Nb6 {[%cal Ob8c8]} 28. Rc5 {[%cal Od6f5]} b3 29. c7 Ra8 30. Rxd5 $4 {[%mdl 8192]} exd5 $19 31. Qe6+ $2 (31. Rb1 Nc4 32. Qe6+ (32. Qxb3 $2 Qxb3 33. Rxb3 a4 $19) 32... Kh7 33. Qf5+ (33. Qxd5 $2 Nd2 $19) 33... Kh8 $19) (31. Nf5 Rfe8 32. Ne7+ Kh8 33. Bh4) 31... Kh8 32. Nf7+ {[#]} Rxf7 $1 33. Qxb6 (33. Qxf7 b2) 33... Qc4 34. Bd6 Kh7 {Strongly threatening ...Ra6.} 35. Qb8 Qc6 ({Worse is} 35... Rxb8 36. cxb8=Q Qxd4+ 37. Kh1 $17) (35... Qxd4+ $142 36. Kf1 Qc4+ 37. Kg1 Qc6 38. Qxb3 Qxd6 39. Qc2+ f5) 36. Bf4 $2 (36. Qxb3 Qxd6 37. Qc2+ f5 38. c8=Q Rxc8 39. Qxc8) 36... a4 {[%cal Of7c7] aiming for ...Rxc7! Black is clearly winning.} 37. Rc1 {[#]} Rxc7 $3 {[%mdl 512] ( -> ...Qxc1+)} 38. Qxc7 (38. Qxa8 Qxa8) 38... Qxc7 {Weighted Error Value: White=0.96/Black=0.38} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.26"]
[Round "2.3"]
[White "Tokman, Ariel"]
[Black "Labollita, Martin"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2315"]
[BlackElo "2388"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,66,19,0,26,18,10,0,32,25,78,81,84,44,88,87,87,100,92,74,77,80,183,14,27,0,104,27,32,32,27,22,19,19,51,0,0,0,0,0,0,0,591,-104,-104,-104,-46,-42,0,0,0,0,105,0,0,0,101]} 1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. O-O Nf6 5. d3 e6 6. e4 d6 7. Nh4 Qc7 {A05: Réti Opening: 1 Nf3 Nf6.} 8. f4 Nc6 {[#]} 9. Nc3 $146 ({Predecessor:} 9. c3 Be7 10. f5 e5 11. Na3 Qd8 12. Nf3 O-O 13. c4 Nd4 14. Nxd4 cxd4 15. Nc2 {½-½ (51) Nivala,T (2213)-Sorvari,J Finland 2012}) 9... Nd4 10. f5 O-O-O (10... Be7 $11 {keeps the balance.}) 11. fxe6 fxe6 12. Nf3 Kb8 (12... a6 $14) 13. Nxd4 $16 cxd4 14. Nb5 {[%csl LRc7,LRd4]} Qc5 15. a4 e5 16. Qe2 $1 {[%cal Oc2c3] And now c3! would win.} Be7 (16... Qc8 $16) 17. b4 $2 (17. c3 $1 $18) 17... Qc6 $11 18. Bd2 (18. c4 {feels hotter.} dxc3 19. Ra3 Qd7 20. Rxc3 Rc8 21. Bd2) 18... Qd7 (18... Qxc2 $11 19. Rfc1 Qb3) 19. Na3 (19. c3 $1 $16) 19... Rc8 20. b5 d5 21. exd5 {aiming for Nc4.} Bxa3 22. Rxa3 Qd6 23. Rfa1 ({White should try} 23. Ra2 $14) 23... Rxc2 24. a5 $1 {[%cal Od2b4] Bb4! is the strong threat.} (24. Bb4 Qc7 25. d6 Qc5 $1 26. Bxc5 Rxe2 27. Bxb7 Kxb7 $17) 24... Rhc8 {[%cal Oc8c3]} (24... Bxd5 $2 25. axb6 Bxg2 26. Rxa7 $18) 25. axb6 axb6 26. Ra7 Rb2 $2 {[%mdl 8192] [#]} (26... R8c7 $11 {and Black stays safe.}) 27. R7a2 $2 (27. Bb4 $1 $18 {[%cal Rb4d6][%mdl 512]} Rxb4 28. Qa2 Rb1+ 29. Qxb1) 27... Rxa2 $17 ({Don't play} 27... Rxb5 $6 28. Qd1 Rc3 29. Bxc3 (29. Qa4 Ra5 $17) 29... dxc3 30. Qe1 $11 (30. Qa4 Qc5+ 31. Kh1 Ra5 $11)) 28. Rxa2 Bxd5 (28... Nxd5 $17 29. Qe4 g6) 29. Ra1 $1 $15 {[%cal Od2b4]} h6 (29... Bxg2 $15 30. Qxg2 Qd5 31. Qxd5 Nxd5) 30. Bb4 $11 Qe6 (30... Qxb4 $2 31. Qxe5+ Rc7 32. Bxd5 Nxd5 33. Qxd5 $18) 31. Re1 Re8 {[#]} (31... Bxg2 $11 32. Qxg2 Rc7) 32. Rc1 ({White has to play} 32. Qxe5+ $1 $16 {[%mdl 512]} Qxe5 33. Rxe5 Bxg2 34. Bd6+ (34. Kxg2 Kc7 $16) 34... Ka8 35. Kxg2) 32... Rc8 33. Re1 Re8 {Weighted Error Value: White=0.52/Black=0.58} (33... Bxg2 $11 34. Qxg2 Rc7) 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.26"]
[Round "2.4"]
[White "Paveto, Kevin"]
[Black "Romero Barreto, Jaime Jose"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2462"]
[BlackElo "2333"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,91,16,18,12,25,29,22,11,16,8,19,20,24,16,14,10,7,0,0,0,44,22,37,15,50,22,20,22,41,25,15,12,16,14,37,29,29,35,39,6,10,13,36,5,0,-6,0,0,0,-69,-69,-77,-41,-42,0,0,0,-31,-30,-37,-10,-81,-81,-87,-71,-117,-91,-94,-33,-36,0,0,0,-229,-220,-201,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 {The modern move. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 8. Re1 h6 9. h3 O-O 10. b4 Re8 11. Nbd2 Be6 12. Bxe6 Rxe6 13. Rb1 b5 14. Ra1 d5 15. Qc2 {[#]} Rd6 $146 (15... d4 $11) ({Predecessor:} 15... d4 16. Bb2 Nh5 17. cxd4 exd4 18. axb5 axb5 19. Qb3 Nf4 20. Nf1 Rg6 21. Ng3 h5 {1-0 (34) Khairullin,I (2615)-Matviishen,V (2512) Lichess.org INT 2021}) 16. Nb3 Rb8 17. axb5 (17. Bd2 {keeps more tension.} dxe4 18. dxe4 Nd7 19. Be3 Bxe3 20. Rxe3 Ne7 21. g3) 17... axb5 18. Be3 (18. Nxe5 {with more complications.} Bxf2+ 19. Kxf2 Nxe5 20. d4 Nxe4+ 21. Rxe4 dxe4 22. dxe5 Rd3 23. Nc5) 18... Bxe3 19. Rxe3 Ra8 20. Rxa8 (20. Ree1 {is interesting.} dxe4 21. dxe4 Rb8 22. Nc5 Nd7 23. Na6) 20... Qxa8 21. Re1 dxe4 22. dxe4 Nd7 23. Ra1 Qb7 24. Qe2 Nd8 25. Nc5 (25. Na5 $5 {[%cal Ra5b7]} Qb8 26. c4 $16) 25... Nxc5 26. bxc5 Re6 27. Ra5 (27. Rd1 $5 {[%cal Rd1d8]} Nc6 28. Rb1 $14) 27... c6 28. Qd3 Qc8 29. Ra7 Nb7 30. Nh4 (30. Qe3 Qb8 31. Ra2 Qf8 $15) ({White should try} 30. c4 $1 $11 b4 31. Qe3) 30... Qb8 $15 ({Much worse is} 30... Nxc5 31. Qe3 Qf8 32. Nf5 $11) 31. Ra1 Nxc5 32. Qe3 {[#]} Nd7 (32... Qd8 $1 $15 33. Nf5 Nb3) 33. Nf5 $11 Nf6 34. Qg3 {[%csl Gf5][%cal Rg3g7]} Ne8 35. Rd1 Qc7 36. Rd3 (36. Qd3 $11) 36... Kh7 $17 37. Qh4 c5 {[%cal Bc6c5,Bc5c4][%mdl 32]} 38. Ne3 (38. Qd8 $142) 38... c4 39. Rd5 b4 (39... Qb7 $17 {...Nf6 is the strong threat.} 40. Rd1 Nf6) 40. cxb4 $15 c3 {[#] Hoping for ...c2.} (40... Nf6 $5 {[%cal Rf6d5]} 41. Rc5 Rc6 42. Nxc4 Rxc5 43. bxc5 Qxc5 $15) 41. Rc5 Rc6 42. Qh5 $2 (42. Rxc6 $1 $11 Qxc6 43. Qe7) 42... Rxc5 $19 43. bxc5 g6 {Prevents Qf5.} ({And not} 43... Qxc5 44. Qxf7 Qc8 45. Qf5+ Qxf5 46. exf5 $11) ({Black should play} 43... Kg8 $19 44. Qd1 (44. c6 $2 Nf6 $19) 44... Qxc5) 44. Qf3 $11 {The position is equal.} Kg7 45. Nd5 {[%csl LRc3,LRc7]} Qxc5 {aiming for ...c2.} 46. Nxc3 {Weighted Error Value: White=0.22 (precise) /Black=0.15 (very precise)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.26"]
[Round "2.5"]
[White "Flores, Diego"]
[Black "Santiago, Yago De Moura"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2566"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,50,13,14,0,0,0,0,0,0,0,0,0,12,-21,-4,-10,-5,-21,-12,-44,-55,-44,-19,-129,-127,-288,-297,-358,-325,-438,-428,-443,-406,-500,-485,-489,-512,-484,-414,-512,-483,-541,-478]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Bxc5 6. b4 {B12: Caro-Kann: Advance Variation.} Be7 7. Qg4 g6 8. Nf3 {The position is equal.} a5 9. b5 ({Don't play} 9. Bb5+ Bd7 10. Bxd7+ Nxd7 $15) 9... h5 10. Qf4 {[#]} Nd7 $146 {[%cal Bb8d7,Bd7c5,Bc5b3,Bb3a1][%mdl 32]} ({Predecessor:} 10... Nh6 11. c4 dxc4 12. Bxc4 Nf5 13. O-O b6 14. Nc3 Bb7 15. Rd1 Qc7 16. Ne4 Bxe4 17. Qxe4 {1-0 (45) Caspi,I (2510)-Balabayeva,K (2116) Belgrade 2021}) 11. Be2 Nc5 12. O-O Nh6 13. Rd1 Nf5 14. c4 Nb3 15. cxd5 $1 exd5 {Hoping for ...a4.} ({Much worse is} 15... Nxa1 16. dxe6 Qc7 17. exf7+ Kf8 18. Bc4 $11) 16. Nc3 Nxa1 $17 17. Nxd5 $2 {[#] Loses the game.} (17. Qa4 $17) 17... Be6 $1 $19 18. Qe4 Rc8 {aiming for ...Bxd5.} 19. Bb2 Nb3 ({But not} 19... Bxd5 $2 20. Rxd5 Qb6 21. Bc4 $19) 20. Nf6+ Bxf6 21. exf6 Qb6 22. Ng5 Nc5 23. Qf4 Rd8 24. Re1 Qd6 25. Qc1 {[#]} Qd2 $1 {Weighted Error Value: White=0.41/Black=0.07 (flawless)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.27"]
[Round "3.1"]
[White "Santiago, Yago De Moura"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2494"]
[BlackElo "2439"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,103,0,0,0,0,0,-2,-24,-25,-24,-8,-29,9,15,2,0,0,0,0,0,0,0,13,15,22,24,36,24,50,37,51,25,28,38,39,17,20,0,15,10,16,7,16,0,46,43,83,20,68,30,30,30,30,30,30,22,35,33,100,105,95,25,87,87,107,89,105,86,125,125,169,176,183,172,161,70,107,103,131,125,138,131,130,137,187,170,172,172,215,229,234,215,332,332,1066,1047]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 g6 5. cxd5 cxd5 6. Bf4 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} Nc6 7. e3 Nh5 8. Bg5 {[#] The position is equal.} f6 $146 ({Predecessor:} 8... h6 9. Bh4 Bg7 10. Nc3 g5 11. Bg3 Nxg3 12. hxg3 e6 13. g4 Bd7 14. a3 a6 {½-½ (28) Fatalibekova,E (2252)-Khropova,L (2009) Opatija 2013}) 9. Bh4 Bf5 10. Qb3 Qb6 (10... g5 {is more complex.} 11. Bg3 Na5 12. Qa4+ Kf7 13. Nc3 Nxg3 14. hxg3 e6) 11. Qxb6 $1 axb6 12. Nc3 g5 $1 13. Bg3 ({Of course not} 13. Nxd5 O-O-O 14. Nxb6+ Kc7 $15) 13... Nxg3 14. hxg3 e6 15. Kd2 {[%cal Be1d2,Bd2d3,Bd3e2][%mdl 32]} Kf7 16. Bd3 Bxd3 17. Kxd3 Kg6 18. g4 Bg7 19. Ke2 Rhd8 20. Rhd1 (20. a3 {with more complications.} h6 21. Raf1 Rac8 22. Rc1 Rb8 23. Nb5) 20... h5 21. gxh5+ Kxh5 22. Ne1 (22. Rh1+ {looks sharper.} Kg6 23. g4 Rac8 24. a3 Bf8 25. Kd3) 22... Kg6 23. g3 Bf8 24. Nd3 Ra5 25. a3 Rda8 26. Rac1 Rd8 (26... b5 $1 $11) 27. f4 $14 {[%cal Bf2f4,Bf4f5][%mdl 32]} Raa8 28. g4 ({White should play} 28. Rh1 $16) 28... Bd6 (28... Bh6 $1 $11) 29. f5+ Kf7 30. Rh1 Rh8 {Inhibits Rh7+.} 31. Nb5 Ke7 32. fxe6 Kxe6 33. Rcf1 {Strongly threatening Rxh8.} Rxh1 (33... Bg3 $14) 34. Rxh1 $16 Rc8 35. Rh7 (35. b4 $16) 35... Ne7 (35... Na5 $1 $11 {keeps the balance.}) 36. Kd2 Bb8 37. Nc3 Rd8 38. Ne1 Rd7 39. Na4 Bc7 {[#]} (39... Ba7 $16) 40. Nd3 $1 $18 Bd8 41. Kd1 Kd6 42. Kc2 (42. Nb4 $18) 42... Ng6 43. Rh6 Rg7 44. Nc3 {Black must now prevent Nb4.} Ke6 45. Nb4 Ne7 46. Kd3 {White is more active.} Bc7 (46... Rg8 $16 {might work better.} 47. Rh7 Rf8) 47. e4 dxe4+ 48. Kxe4 ({Don't take} 48. Nxe4 Ng8 49. d5+ Kd7 50. Nxf6+ Nxf6 51. Rxf6 Be5 52. Rxb6 Kc7 $16) 48... Nc8 {[#]} (48... Bd8 {was worth a try.} 49. Nbd5 (49. d5+ Kd7 $16) 49... Nxd5 50. Nxd5 Rd7) 49. Nb5 $1 Bd8 50. Nd5 {Prevents Re7.} Rd7 (50... Rf7 $142 51. Rh8 Rd7) 51. Ne3 {Pair of Knights!} Be7 $2 (51... Nd6+ 52. Nxd6 Kxd6) 52. Rh7 {Weighted Error Value: White=0.11 (very precise) /Black=0.19 (very precise)} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.27"]
[Round "3.2"]
[White "Romero Barreto, Jaime Jose"]
[Black "Flores, Diego"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2333"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,57,43,51,39,63,59,47,58,56,56,50,58,65,56,275,269,272,263,290,207,191,0,0,-59,-65,-57,0,0,0,0,102,0,0,0,0,0,0,0,228,218,192,210,560,518,522,522,600,556,29990,29991]} 1. e4 c5 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. d4 Bxe4 6. Nc3 {B40: Sicilian: 2...e6, Unusual lines.} Bb7 7. d5 $1 {[%mdl 1024] White has compensation.} Nf6 {[%cal Rf6d5]} 8. Ne5 {[%cal Oe5f7] Strongly threatening Nxf7! White is slightly better.} Qc8 $1 9. O-O {Threatens to win with Bg5.} Be7 $1 10. Bg5 $1 {[#] Hoping for Bxf6.} O-O $146 {And now ...Nxd5 would win.} ({Predecessor:} 10... Na6 11. Nc4 O-O 12. a3 Rb8 13. Re1 exd5 14. Bxf6 Bxf6 15. Nxd5 Bxd5 16. Bxd5 Nc7 {½-½ (50) Plenca,J (2415)-Fedorchuk,S (2615) Germany 2016}) 11. Nc4 Kh8 $2 (11... Bxd5 $14 12. Bxf6 (12. Nxd5 exd5 13. Nd6 Qc7 $14) 12... Bxf6 13. Bxd5 (13. Nxd5 exd5 14. Qxd5 Nc6 $14) 13... exd5 14. Nxd5 Qd8) 12. Bxf6 $18 (12. d6 Bd8 $15) 12... gxf6 13. Re1 Na6 14. Qh5 Rg8 15. d6 $2 ({Much less strong is} 15. Qxf7 Rg7 16. Qh5 Nb4 $16) (15. Rad1 $18) 15... Bd8 $11 16. Rad1 (16. Bxb7 $11 Qxb7 17. Qxf7) 16... Bxg2 $15 17. Kxg2 Qc6+ (17... Nb4 $15 18. Ne3 f5) 18. f3 b5 19. Ne3 $36 {[%cal Oc3d5][%mdl 2048] White fights for an advantage.} Rg6 {[#]} (19... Ba5 $1 $11 {keeps the balance.}) 20. Ne2 {White is much more active. Black has bad knights.} (20. Ncd5 $1 $16 {[%mdl 512]}) 20... Kg7 21. Nf4 Rg5 22. Qh3 {aiming for Ng4.} f5 {Inhibits Ng4.} 23. c4 Bf6 $2 (23... bxc4 $11 {and Black has nothing to worry.} 24. Nh5+ Kf8) 24. Nh5+ $18 Rxh5 25. Qxh5 Rg8 $2 {[#]} (25... Bd4 26. g4 Qxd6 27. gxf5 (27. cxb5 Nc7 $16) 27... bxc4 28. Nxc4 (28. fxe6 fxe6 29. Nxc4 Qe7 $18) 28... Qe7) 26. Nxf5+ $1 {[%mdl 512]} exf5 27. Qxf5 {Re4 is the strong threat.} bxc4 28. Re4 {Rg4+ would kill now.} h5 {Prevents Rg4+.} 29. Rf4 {Weighted Error Value: White=0.20 (precise) /Black=0.67} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.27"]
[Round "3.3"]
[White "Labollita, Martin"]
[Black "Paveto, Kevin"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2388"]
[BlackElo "2462"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,81,0,0,-8,0,-9,0,0,0,0,17,6,38,0,-11,-21,0,-16,-16,-13,-16,-45,-39,-71,-66,-74,-72,-133,-106,-116,-104,-206,-195,-179,-191,-196,-172,-188,-183,-243,-239,-235,-235,-398,-391,-346,-292,-622,-615,-595,-561,-29985,-5310,-29984,-29985,-29985,-29986,-29989,-29990,-29990,-29991,-29991,-29992,-29997,-29998,-29999]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. c3 d6 6. e4 c5 7. dxc5 dxc5 8. Be2 Nc6 9. O-O Qc7 10. Re1 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} b6 11. Qc2 Bb7 12. h3 {The position is equal.} h6 13. Be3 {[#]} g5 $146 ({Predecessor:} 13... Nh5 14. Bf1 Nf4 15. a4 a6 16. Nc4 e5 17. Qb3 Na5 18. Qxb6 Qxb6 19. Nxb6 Rad8 20. Bxc5 {1-0 (45) Kamsky,G (2674)-Hua,L (2305) Chess.com INT 2020}) 14. Nc4 e6 15. a4 (15. e5 $14 {should be considered.} Nd5 16. Bxg5 $1) 15... Ne7 $11 16. Nfd2 Ng6 17. a5 Bc6 18. axb6 axb6 {[%cal Ba7b6,Bb6b5][%mdl 32]} 19. Rxa8 Rxa8 20. Bf1 b5 21. Na3 {Black converts the advantage convincingly.} c4 22. Qb1 ({White should play} 22. Bd4) 22... Qb7 {[%cal Rf6e4] Black is more active.} 23. Bd4 e5 $36 {[%mdl 2048] Black is in control.} (23... Rd8 {is interesting.} 24. Qc2 e5 25. Bc5 h5 26. Rd1 Nf4) 24. Be3 (24. Bc5 $17) 24... Nxe4 $19 25. Nxe4 Bxe4 26. Qc1 Rd8 27. Nc2 Bf8 28. Nb4 (28. Rd1 {is a better defense.} Rxd1 29. Qxd1) 28... Bxb4 29. cxb4 Bd3 30. g3 $2 (30. Rd1) 30... Bxf1 31. Rxf1 Qf3 {...Rd3 is the strong threat.} 32. Qa1 $2 {[#]} (32. Re1) 32... Nf4 $1 {[%mdl 512]} 33. gxf4 gxf4 {[%cal Bg5f4,Bf4f3][%mdl 32]} ({Not} 33... Qxh3 34. fxe5 Qg4+ 35. Kh2 $11) 34. Bc5 Kh7 (34... Qxh3 $142 35. Qa3 f3 36. Qxf3 Qxf3 37. Re1 Kh7 38. Be3 Qh3 39. f3 Rg8+ 40. Bg5 Qg3+ 41. Kf1 Qxf3+ 42. Kg1 Rxg5+ 43. Kh2 Qh5#) 35. Kh2 Rd3 {Black mates.} 36. Kg1 Qxh3 37. Qa8 f3 {[%csl Gf3][%cal Rh3g2]} 38. Qe4+ Kg8 {[%csl Gf3][%cal Rh3g2]} 39. Qa8+ {[#]} Rd8 $3 {[%mdl 512]} 40. Qxd8+ (40. Qxf3 Qxf3) 40... Kh7 {[%csl Gf3][%cal Rh3g2]} 41. Qf6 Qg2# {Weighted Error Value: White=0.59/Black=0.26 (precise)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.27"]
[Round "3.4"]
[White "Pichot, Alan"]
[Black "Tokman, Ariel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2625"]
[BlackElo "2315"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,0,0,19,2,0,22,4,50,17,22,42,135,129,123,132,135,128,149,138,113,116,140,135,138,145,198,197,200,172,203,175,206,212,216,205,212,200,193,200,338,332,343,319,318,318,560,537,1181,1080,1212,810,753,727,694,700]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Qxd4 Nc6 6. Qf4 {B12: Caro-Kann: Advance Variation.} e6 7. Nc3 a6 8. Bd3 {[#] The position is equal.} (8. Ng5 f6 9. Nf3 fxe5 10. Nxe5 Nxe5 11. Qxe5 Nf6) 8... f6 $146 (8... Nge7 $11) ({Predecessor:} 8... Qc7 9. O-O Nge7 10. Re1 Ng6 11. Qg3 Bc5 12. h4 Nd4 13. Nxd4 Bxd4 14. h5 Bxe5 15. Rxe5 Qxe5 16. hxg6 {1-0 (26) Alekseenko,K (2650)-Iljiushenok,I (2520) Konya 2019}) 9. O-O (9. Qh4 {seems wilder.} Bc5 10. O-O Nxe5 11. Nxe5 fxe5 12. Qh5+) 9... fxe5 10. Nxe5 {[%csl Ge5][%cal Rf4f7]} Qf6 {Prevents Qf7+.} (10... Nf6 $14) 11. Nxc6 $16 {[%cal Of4c7] Threatens to win with Qc7! White is much more active.} Qxf4 12. Bxf4 bxc6 13. Na4 Bd7 14. c4 {[%cal Bc2c4,Bc4c5,Bc5b6][%mdl 32]} (14. Nb6 Ra7 $16) 14... Nf6 15. Rac1 Be7 16. Rfe1 Bb4 17. Re2 Ke7 (17... Be7 $16 {was necessary.} 18. cxd5 (18. Nb6 Ra7 $16) 18... Nxd5) 18. c5 $18 Ra7 19. Nb6 Ba5 20. f3 Bxb6 21. cxb6 Rb7 22. Be3 {A strong pair of Bishops.} ({Don't take} 22. Bxa6 $6 Rxb6 23. Bd3 Ra8 $16) 22... Ra8 23. Bd4 a5 24. a4 Rab8 (24... g6 $142 25. g3 Kf7) 25. b4 {[%cal Bb2b4,Bb4a5,Ba5a6][%mdl 32]} Rxb6 26. Bxb6 ({Resist} 26. bxa5 Rb4 27. Bc5+ Kd8 $18) 26... Rxb6 27. bxa5 Rb3 {[#]} (27... Rb8 {was worth a try.} 28. a6 Rc8) 28. a6 $1 {Black must now prevent a7. White is clearly winning.} Ne8 {[#]} (28... Ra3 29. Bc2) 29. Bb5 {[%mdl 512]} Kd6 (29... Nc7 30. a7) 30. Bxc6 Bxc6 {[#]} 31. Rxe6+ $3 {[%mdl 576] Deflection, Decoy, Promotion} Kxe6 32. Rxc6+ {Weighted Error Value: White=0.08 (flawless) /Black=0.35} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.27"]
[Round "3.5"]
[White "Roselli Mailhe, Bernardo"]
[Black "Fiorito, Fabian"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2426"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,74,25,20,29,23,17,26,24,10,20,20,22,21,21,24,41,36,43,15,19,10,20,16,49,0,0,0,29,0,0,0,0,0,0,0,7,0,0,0,0,0,16,0,22,23,28,28,28,27,38,0,32,0,68]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. Be2 O-O 8. O-O dxc4 9. Bxc4 b5 10. Be2 Bb7 11. Rd1 {11.e4 might become the main line.} Qc7 12. e4 {[#] Black must now prevent e5.} e5 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} 13. Bg5 exd4 14. Rxd4 {White wants to play Bxf6.} Ne5 {White has an edge.} 15. Bxf6 gxf6 16. g3 Bc5 {[#] ...Nxf3+ is the strong threat.} 17. Rd2 Qb6 18. Rf1 Bc8 19. Kg2 {Prevents Bh3+.} Be6 20. Nh4 {[#]} Rfd8 $146 ({Predecessor:} 20... Rad8 21. Nf5 Ng6 22. Rfd1 Rxd2 23. Qxd2 Re8 24. Bg4 Ne5 25. Bh3 Bxf5 26. Bxf5 Kg7 {½-½ (37) Szabo,V (2426)-Rivas Maceda,J (2112) LSS email 2015}) 21. Nf5 Bxf5 22. exf5 Kg7 23. Rfd1 (23. Ne4 $14 {might be stronger.} Rxd2 24. Nxd2 (24. Qxd2 Rd8 $14)) 23... Rxd2 $11 24. Qxd2 Bb4 25. f4 Nc4 26. Bxc4 bxc4 27. Qe2 {aiming for Ne4.} Bxc3 28. bxc3 {[%mdl 4096] Endgame KQR-KQR} Qa5 29. Qg4+ Kh8 30. Qh5 {Threatens to win with Rd7.} Kg7 31. Rd7 Rf8 32. Qf3 Qa3 33. Kh3 Qa5 {Prevents Rc7.} 34. Qg4+ Kh8 35. Qh5 Kg7 36. Qg4+ (36. Rd6 $5 {[%cal Rd6f6]} Qxc3 37. Rxc6 $16) 36... Kh8 37. Qh5 Kg7 $1 {Weighted Error Value: White=0.10 (very precise) /Black=0.06 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.28"]
[Round "4.1"]
[White "Diaz Hollemaert, Nahuel"]
[Black "Fiorito, Fabian"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2439"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,20,11,0]} 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. e3 d6 6. Nge2 e5 7. a3 Nge7 8. Rb1 a5 9. O-O O-O 10. d3 Rb8 {[#]} {Predecessor:} 11. Nd5 $146 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7.} Nxd5 12. cxd5 Ne7 13. b4 cxb4 14. axb4 b5 15. bxa5 Qxa5 16. Bd2 b4 17. Qb3 Bg4 18. Nc1 Rb6 19. Na2 Be2 {1-0 (57) Nakamura,H (2779)-Dominguez Perez,L (2739) Doha 2016} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.28"]
[Round "4.2"]
[White "Tokman, Ariel"]
[Black "Roselli Mailhe, Bernardo"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2315"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,130,27,18,25,35,38,21,24,29,0,0,0,0,0,0,-11,-10,-18,-33,-31,-20,-22,0,-22,-12,-10,-25,-42,-49,-43,-40,-85,-35,-46,-33,-68,-53,-50,-21,-51,-5,-31,0,-57,-56,-81,-55,-120,-8,-35,-23,-21,-29,-75,-69,-77,-63,-68,-70,-86,-75,-101,-66,-108,-108,-108,-109,-122,-131,-139,-141,-145,-128,-266,-254,-293,-220,-302,-281,-279,-283,-290,-274,-284,-283,-289,-289,-289,-287,-296,-296,-296,-294,-297,-297,-474,-475,-485,-485,-492,-498,-500,-487,-700,-646,-654,-413,-497,-403,-390,-383,-714,-788,-666,-619,-589,-580,-1237,-1044,-5147,-5147]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} d6 6. Nc3 Nc6 7. d5 {The main line 7.d5 scores better than 7.e4. A49: 1 d4 Nf6 2 Nf3 g6 3 g3: Anti-King's Indian systems.} Nb4 8. a3 Na6 9. Nd4 {The position is equal.} e5 10. dxe6 fxe6 11. Nb3 {[#]} c6 $146 ({Predecessor:} 11... e5 12. Qd3 Kh8 13. Bg5 Bf5 14. e4 Be6 15. f4 h6 16. Bh4 c6 17. Kh1 Qb6 18. Qxd6 Bc4 19. Na4 Qb5 20. Nc3 Qb6 {½-½ (20) Martinez Duany,L (2517)-Espinosa Veloz,E (2520) Villa Clara 2017}) 12. e4 {[%cal Oe4e5]} e5 13. h3 Be6 14. Bg5 Qd7 15. Kh2 Bc4 16. Re1 h6 17. Be3 (17. Na5 $5 {[%cal Rg5f6]} Be6 18. Be3 $11) 17... b6 {[%cal Bb7b6,Bb6b5,Bb5b4][%mdl 32]} 18. a4 Rad8 19. a5 b5 20. Qd2 Kh7 21. Rad1 (21. Nc1 $15) 21... Qe7 (21... b4 $17 22. Ne2 c5) 22. Qc1 b4 23. Nb1 c5 24. N3d2 Bb5 25. c3 Bd3 (25... Qc7 $15) 26. f3 Qb7 27. c4 (27. Bf1 $11 Bxf1 28. Rxf1) 27... Qf7 $15 28. Bf2 h5 29. h4 (29. Be3 $15) 29... Ng4+ 30. fxg4 $11 {And now Nf3 would win.} Qxf2 31. Nf1 $1 Bxb1 {Dancing on a razor blade.} 32. Qxb1 (32. gxh5 $1 $11 Ba2 33. hxg6+ Kxg6 34. Rd2) 32... hxg4 $17 33. Rd2 Qf7 34. Qd1 {[%csl LRd6,LRg4]} Qe6 ({Of course not} 34... Qxc4 35. Rxd6 Rxd6 36. Qxd6 $11) 35. b3 Nb8 36. Rd3 (36. Ne3 $2 Bh6 37. Bf1 Nc6 $17) 36... Bh6 37. Kg1 (37. Re2 $1 $15) 37... Nc6 38. Nh2 Nxa5 39. Nxg4 {[#]} Nc6 $1 40. Bh3 Nd4 41. Kg2 Qf7 {Black is much more active.} 42. Kh1 {This move loses the game for White.} (42. Nh2 $17 {was called for.}) 42... a5 $19 {[%cal Oa5a4]} 43. Rf1 ({But not} 43. Nxh6 Kxh6 44. Rf1 Qe7 45. Qd2+ Kg7 $19) 43... Qg7 {[%cal Oa5a4]} 44. Rxf8 Rxf8 45. Qa1 a4 46. Qxa4 {[#]} Qb7 $1 47. Bg2 Ra8 {[%cal Bf8a8,Ba8a1,Ba1b1,Bb1b3,Bb3a3,Ba3a2,Ba2c2][%mdl 32]} 48. Nf6+ Kh8 49. Qd7 Qxd7 50. Nxd7 Ra1+ 51. Kh2 Rb1 52. Nb6 Rxb3 53. Rd1 (53. Rxb3 $142 Nxb3 54. Bf1) 53... Ra3 54. Nc8 Bf8 55. Nb6 b3 56. Rb1 Ra2 {aiming for ...Nf3+.} 57. g4 (57. Kh3 $142) 57... Be7 58. g5 Rc2 59. Nd5 Bd8 {White must now prevent ...Nf3+.} 60. Kg3 {Inhibits Nf3.} Ba5 {[%cal Oc2c1] Hoping for ...Rc1!} 61. Rf1 {Prevents Rc1.} (61. Bf1) 61... Ne2+ {Black is clearly winning.} 62. Kg4 Nf4 63. Nxf4 exf4 64. Kh3 b2 {( -> ...Rc1)} 65. e5 Rc1 {Weighted Error Value: White=0.43/Black=0.17 (very precise)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.28"]
[Round "4.3"]
[White "Paveto, Kevin"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2462"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,100,11,6,6,9,12,12,0,0,0,0,0,0,0,0,0,15,0,0,0,0,0,0,0,0,0,0,-3,0,-8,-8,-12,-8,-8,0,0,0,-20,0,-16,-16,-17,-17,-16,-17,-15,-16,-30,0,-90,-85,-69,-9,-56,-47,-85,-67,-46,-46,-46,-24,-26,8,11,9,-17,-8,-8,0,-386,-382,-530,-523,-492,-485,-29986,-29987,-29988,-29989,-29989,-29990,-29993,-29978]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f4 exf4 9. Bxf4 Nc6 10. Qd2 d5 11. exd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nxd5 12. Nxd5 Qxd5 13. Qxd5 {The position is equal. is the legacy move (13.0-0-0).} Bxd5 14. O-O-O O-O-O 15. g3 Bd6 {[#] Hoping for ...Bxf4+.} 16. Bh3+ Kc7 17. Rhf1 {[#]} h6 $146 ({Predecessor:} 17... Bxf4+ 18. Rxf4 {½-½ (18) Shirov,A (2709)-Ponomariov,R (2723) Poikovsky 2006}) 18. Be3 Bc4 19. Rfe1 Rhe8 20. Bg2 f5 {[%cal Bf7f5,Bf5f4][%mdl 32]} 21. Bxc6 bxc6 22. Bd2 {Black must now prevent Ba5+.} Rxe1 23. Bxe1 Rd7 24. Ba5+ Kc8 25. Nd4 f4 ({Resist} 25... Bxa2 26. Nxf5 Be5 27. b3 $16) 26. Nf5 Be5 27. Re1 $1 Bb8 {And now ...Rf7 would win.} 28. b3 Bf7 29. gxf4 Bxf4+ 30. Kb2 g6 31. Re4 Bg5 {This bishop pair is nice.} 32. Ng3 h5 {[%cal Bh6h5,Bh5h4][%mdl 32]} 33. Re2 Bd5 34. Rf2 (34. c4 $11 Bf3 35. Re6) 34... h4 $17 35. Ne2 Be4 (35... Rf7 $15 36. Rxf7 Bxf7) 36. Bc3 (36. Nc3 $1 $11 Bf5 37. Na4 Bf6+ 38. Bc3) 36... Rd1 $15 37. a4 Rh1 {...Be3 is the strong threat. Black is more active.} 38. Be5 c5 39. Nf4 Bf5 40. Rg2 Bh6 41. Nxg6 {Strongly threatening Ne7+.} h3 42. Rg3 {aiming for Ne7+.} Kd7 {To avoid Ne7} 43. Nh4 Ke6 44. Nf3 {[%mdl 8192]} ({Much weaker is} 44. Nxf5 Bc1+ 45. Kc3 Kxe5 46. Rxh3 Kxf5 $17) (44. Bb8 $11 Bc1+ 45. Kc3 Rxh2 46. Nxf5 Kxf5 47. Rd3 (47. Rf3+ Ke4 $11)) 44... Rc1 $19 45. Bb8 Rxc2+ 46. Ka1 Bc1 47. Ng5+ {[#]} (47. Be5 $19) 47... Kd5 {Black mates.} 48. Rf3 Bb2+ 49. Kb1 Bg6 50. b4 Rxh2+ {Weighted Error Value: White=0.44/Black=0.07 (flawless)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.28"]
[Round "4.4"]
[White "Flores, Diego"]
[Black "Labollita, Martin"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2566"]
[BlackElo "2388"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,50,59,29,34,41,22,14,16,10,14,-33,0,0,0,-16,-16,0,26,26,35,30,26,23,27,9,14,-18,-9,-14,-11,-12,-9,-13,0]} 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. d4 cxd4 8. Qxd4 O-O 9. Rd1 d6 $1 {9...d6 scores better than 9...Nc6.} 10. b3 Na6 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} 11. Bb2 Nc5 12. h3 a6 {[#]} 13. Qe3 $146 ({Predecessor:} 13. Rac1 Qc7 14. Rc2 h6 15. Rcd2 e5 16. Qe3 Nce4 17. Rc2 Nxc3 18. Bxc3 Ne4 19. Bb4 a5 20. Ba3 {1-0 (83) Kolus,W-Buczinski,H LSS email 2007}) 13... Rc8 14. Rd2 (14. Nd2 $11 {should be considered.}) 14... Qc7 (14... b5 $5) 15. Rad1 Rfe8 16. Nd4 Bxg2 17. Kxg2 h6 18. Qf3 Nfd7 {[%cal Bf6d7,Bd7e5,Be5c6][%mdl 32]} 19. Kh2 Ne5 20. Qg2 Nc6 21. Nc2 Qb8 {The position is equal.} 22. Ne4 Nxe4 23. Qxe4 b5 24. Ne3 bxc4 25. bxc4 Bf8 {Weighted Error Value: White=0.11 (very precise) /Black=0.05 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.28"]
[Round "4.5"]
[White "Santiago, Yago De Moura"]
[Black "Romero Barreto, Jaime Jose"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2494"]
[BlackElo "2333"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,-8,-8,-19,0,0,0,-6,0,0,0,-2,0,0,0,0,8,-12,0,0,0,-36,-41,-49,115,113,218,212,203,195,272,276,276,276,276,227,264,241,225,0,29981,29982,29982,29983,29989,29984,29996,29997]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. h4 dxc4 {[%cal Oc7c5]} 6. e4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} c5 7. d5 b5 {Prevents Qa4.} 8. h5 $1 {The position is equal.} O-O (8... gxh5 9. e5 Ng4 10. Rxh5 $16) 9. hxg6 $1 fxg6 10. Rh4 Ng4 {Hoping for ...Bf6.} 11. Nxb5 Qa5+ 12. Nc3 $1 {Strongly threatening d6.} h5 $1 $132 {[%mdl 2048] [#] Black is not keeping still} (12... Bxc3+ 13. bxc3 h5 14. Qd2 $16) 13. e5 $146 {d6 is the strong threat.} ({Predecessor:} 13. d6 e6 14. Bd2 Qb6 15. e5 Nc6 16. Na4 Qd8 17. Bg5 Qa5+ 18. Bd2 Qd8 19. Bg5 {0-1 (64) Sargissian,G (2689)-Antipov,M (2549) Moscow 2019}) 13... Nd7 14. d6 e6 {Prevents Qd5.} 15. Bxc4 Ndxe5 16. Rxg4 Rxf3 {[#]} 17. Rxg6 $1 $16 (17. gxf3 hxg4 18. Be2 gxf3 19. Bxf3 Rb8 $17) 17... Rf7 {[#]} (17... Qb4 $16 18. Be2 (18. gxf3 Qxc4 19. Rxg7+ Kxg7 $11) (18. Bxe6+ Bxe6 19. Rxe6 Rxc3 $11) 18... Nxg6 19. Bxf3 Rb8) 18. Rxg7+ $1 {[%mdl 512]} Rxg7 19. Qxh5 ({Inferior is} 19. Bd5 Rb8 20. Qxh5 Nd3+ 21. Kf1 exd5 22. Qe8+ (22. Qxd5+ Rf7 $11) 22... Kh7 23. Qh5+ Kg8 24. Qxd5+ Rf7 25. Qg5+ (25. Qxd3 $2 Ba6 $19) 25... Rg7 26. Qd5+ Rf7 27. Qg5+ (27. Qxd3 $2 Ba6 $19) 27... Rg7 28. Qd5+ $11) 19... Nxc4 {[#]} (19... Qb4 {might work better.}) 20. Bh6 $1 $18 {Dancing on a razor blade.} ({Not} 20. Qe8+ Kh7 $16) 20... Nxb2 (20... Rxg2 $2 21. Qe8+ Kh7 22. O-O-O $18) 21. Bxg7 Kxg7 22. Qg4+ ({Less strong is} 22. Qg5+ Kf8 23. Qf6+ Kg8 $14) 22... Kf6 23. Qf4+ Kg7 {aiming for ...Nd3+.} 24. Kd2 {Prevents Nd3.} ({Better is} 24. Qg3+ $18 Kf7 25. Qf3+ Kg6 26. Kf1) 24... Ba6 $2 {[%mdl 8192]} (24... Qb4 $11 25. Qg3+ Kf8 26. Qf3+ Kg7 27. Qg3+ Kf8 28. Qf3+ Kg7 29. Qg3+) 25. Qg3+ {White mates.} Kf7 26. Rh1 Nc4+ 27. Kc2 Nxd6 28. Rh7+ {Weighted Error Value: White=0.09 (flawless) /Black=0.49} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.29"]
[Round "5.1"]
[White "Romero Barreto, Jaime Jose"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2333"]
[BlackElo "2439"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,65,24,14,45,45,41,29,42,11,11,0,9,11,20,-14,0,-8,0,-1,13,15,20,13,35,0,0,0,0,-31,37,0,64,54,106,113,85,98,108,108,196,77,74,76,80,90,84,82,701,682,775,767,657,461]} 1. e4 c5 2. c3 {[%cal Bc2c3,Bc3d4,Bd4e5][%mdl 32]} Nf6 {[%cal Bg8f6,Bf6d5,Bd5b6][%mdl 32]} 3. e5 Nd5 4. d4 e6 5. Nf3 cxd4 6. cxd4 d6 7. Bc4 Nb6 8. Bd3 dxe5 {B22: Sicilian: 2 c3.} 9. dxe5 Na6 10. Qe2 Nc5 {White has an edge.} 11. Bb5+ Bd7 {[#]} 12. Nc3 $146 ({Predecessor:} 12. O-O Bxb5 13. Qxb5+ Qd7 14. Nc3 Qxb5 15. Nxb5 Nd5 16. Bd2 Nd3 17. Bc3 a6 18. Rfd1 Nxe5 19. Rxd5 Nxf3+ 20. gxf3 exd5 {½-½ (49) Cuartas,J (2521)-Fargere,F (2480) Barcelona 2009}) 12... Be7 13. O-O (13. b4 Nca4 14. Nxa4 Bxb4+ 15. Bd2 Bxd2+ 16. Nxd2 Nxa4 $15) 13... O-O 14. Rd1 {[#]} Bxb5 $1 15. Qxb5 Qe8 16. Qb4 Nd3 17. Qe4 Nxc1 18. Raxc1 Qb8 19. Rd3 Rc8 20. Rcd1 Rc5 21. Qf4 f5 (21... Qc7 $15) 22. a4 (22. Qb4 $5 {[%cal Rb4b3]}) 22... a5 (22... Qe8 $11) 23. g4 $14 Qf8 {[#]} (23... Nc4 $14) 24. Nd4 $1 $16 {[%csl LRe6,LRf5]} fxg4 25. Qxg4 Qf7 26. f4 {White is much more active.} ({Reject} 26. Nxe6 $6 h5 27. Qh3 Rxe5 $11) (26. Qxe6 Qxe6 27. Nxe6 Rxe5 $15) 26... Rc4 (26... Nc4 $16 {was worth a try.} 27. Rg3 (27. Nxe6 h5 $11) (27. Qxe6 $2 Nxb2 28. Qxf7+ Kxf7 $19) 27... h5 28. Qxe6 h4 29. Qxf7+ Kxf7) 27. b3 ({Worse is} 27. Qxe6 Nxa4 28. Nxa4 Rxa4 $11) (27. Nxe6 $18 {is the precise move to win. And now Nb5 would win.} g5 28. b3) 27... Rxd4 28. Rxd4 {Black must now prevent Kh1.} Bc5 {[#]} 29. Ne4 $1 Bxd4+ 30. Rxd4 {Strongly threatening Ng5.} Re8 $2 {[%mdl 8192]} (30... h6 $16) 31. Nf6+ $18 {White is clearly winning.} Kh8 32. Nxe8 Qxe8 33. Rd6 {[%csl LRb6,LRe6] Weighted Error Value: White=0.15 (very precise) /Black=0.20 (precise)} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.29"]
[Round "5.2"]
[White "Labollita, Martin"]
[Black "Santiago, Yago De Moura"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2388"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,59,5,0,1,20,23,46,43,52,27,20,3,0,0,20,4,24,-2,0,0,7,0,35,25,39,4,22,3,10,16,0,6,0,13,38,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. c3 d6 6. e4 c5 7. d5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} e6 $1 {[%mdl 4] now scores much better than the old 7...h6.} 8. Bc4 {[#]} e5 $146 ({Predecessor:} 8... exd5 9. Bxd5 Nbd7 10. Nc4 h6 11. Bxf6 Nxf6 12. Nxd6 Nxd5 13. Qxd5 Bg4 14. Qxc5 Qe7 {0-1 (30) Torre,E (2458)-Al Sayed,M (2510) Ashkhabad 2017}) 9. O-O {White is slightly better.} h6 10. Bxf6 (10. Bh4 {with more complications.} Nbd7 11. a4 Nb6 12. Bd3 a5 13. Re1) 10... Qxf6 11. b4 cxb4 12. cxb4 Qd8 13. Qc2 f5 14. Rfc1 a5 15. bxa5 Rxa5 16. a4 fxe4 17. Nxe4 Bf5 18. Rab1 Nd7 19. Bd3 ({Wrong is} 19. Rxb7 $2 Bxe4 20. Rxd7 (20. Qxe4 $2 Nc5 $19) 20... Bxc2 $19) 19... Nc5 $1 20. Nxc5 Rxc5 21. Qe2 Rxc1+ 22. Rxc1 Qa5 {[%cal Oe5e4]} 23. Bb5 Qb4 {The position is equal.} 24. Qd2 Qe4 25. Rc4 Qb1+ 26. Rc1 Qb3 27. Rc3 Qb4 28. Rc4 Qb1+ 29. Rc1 Qb3 30. Rc3 {Weighted Error Value: White=0.09 (flawless) /Black=0.09 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.29"]
[Round "5.3"]
[White "Pichot, Alan"]
[Black "Flores, Diego"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2625"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,89,33,26,0,30,25,737,33,33,-8,0,-7,0,-20,-14,-16,-18,-45,-10,-18,-13,-30,0,-56,-68,-70,-63,-62,-65,-64,-68,-61,-61,-61,-27,-35,-26,-130,-119,-239,-243,-242,-229,-184,-125,-122,-51,-55,-14,-17,-18,-29,-26,-57,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. a3 {[#] Inhibits Qb4+. B45: Sicilian Four Knights.} (10. c4 $5 {[%cal Rc4d5]}) 10... Bb7 $146 ({Predecessor:} 10... Rb8 11. Qd3 f5 12. exf6 Nxf6 13. Nxf6+ gxf6 14. Be2 Bg7 15. Be3 Qa5+ 16. b4 Qd5 17. Bxa7 Ra8 {1-0 (42) Nepomniachtchi,I (2773)-Ponkratov,P (2641) Chess.com INT 2022}) 11. c4 Ne7 {[%mdl 8192]} (11... Ne3 $11 12. Qd3 Nxf1 13. Rxf1 c5) 12. Qd3 $2 (12. c5 $18 Qc7 13. Nd6+ Kd8 14. Nxf7+ Kc8 15. Nxh8) 12... Nf5 $14 13. Bd2 (13. g4 $1 $14 Nd4 14. b4) 13... c5 $11 14. O-O-O {[%cal Od2a5]} Rd8 15. Bc3 d5 16. exd6 $1 Bxd6 17. Qf3 Be7 {...Rxd1+ is the strong threat.} 18. Rxd8+ Qxd8 19. Bd3 Nd4 20. Qh5 (20. Nf6+ $11 Bxf6 21. Qxb7) 20... g6 $15 21. Qh6 Bf8 22. Qh3 Bxe4 23. Bxe4 {[%cal Oe4c6]} Bg7 24. Kb1 O-O 25. g4 Qc7 26. f5 Qf4 {[%csl LRe4,LRf5]} 27. Bd3 (27. Re1 $11) 27... Nf3 $17 {aiming for ...Bxc3.} ({But not} 27... gxf5 28. gxf5 exf5 29. Rg1 $14) 28. Rc1 {[#]} (28. Bxg7 $17 Kxg7 29. Qg3) 28... Rd8 $1 $19 29. Bxg7 Kxg7 ({Worse is} 29... Rxd3 30. Qh6 Qxh6 31. Bxh6 $17) 30. Rc3 Ne5 ({Black should play} 30... e5 $19 31. Qg3 Rd4) 31. fxe6 $17 Nxd3 ({Black should try} 31... fxe6 $17 32. Bc2 Qxg4 33. Qxg4 Nxg4) 32. e7 $15 {[#]} (32. Rxd3 $2 Qe4 33. Kc2 Qe2+ 34. Kc3 Qe5+ 35. Kc2 Qe2+ 36. Kc3 Rb8 $19) 32... Qd2 $1 33. Qxd3 $1 $11 {Really sharp!} Rxd3 34. e8=Q {Prevents Qe1+.} Rxc3 35. Qe5+ f6 (35... Kh6 $15 36. bxc3 Qd3+ 37. Kb2 Qxc4) 36. Qe7+ {The position is equal.} Kh6 37. bxc3 {[%mdl 4096] Endgame KQ-KQ} Qf2 38. Qxa7 Qg1+ 39. Kb2 Qxh2+ 40. Kb3 Qg1 41. a4 Qd1+ 42. Kb2 Qe2+ 43. Kb3 Qd1+ 44. Kb2 Qd2+ 45. Kb3 {Weighted Error Value: White=0.34/Black=0.12 (very precise)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.29"]
[Round "5.4"]
[White "Roselli Mailhe, Bernardo"]
[Black "Paveto, Kevin"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2423"]
[BlackElo "2462"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,126,0,0,0,-12,-14,19,21,37,33,62,69,68,68,60,83,139,141,124,112,116,125,112,118,191,196,235,235,231,237,229,228,369,373,379,383,369,351,368,373,583,580,525,483,429,461,452,440,446,437,554,95,87,62,68,62,113,104,125,62,85,90,90,96,181,14,12,20,12,-288,-282,-584,0,-661,-637,-598,25,25,25,25,25,25,69,0,0,0,0,0,0,0,8,8,9,8,14,0,0,-13,0,-164,-164,-265,-256,-274,-263,-293,-265,-308,-323,-529,-130,-684,-654,-29991,-29992,-29995,-29996,-29997,-29998]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nc3 d5 5. Nb5 Na6 6. e3 {D00: 1 d4 d5: Unusual lines.} O-O {6...0-0 scores better than 6...c6.} 7. Be2 c5 8. h3 {The position is equal.} Qb6 9. O-O c4 10. a4 Bf5 11. c3 {[#] Prevents Nb4.} Rfc8 $146 ({Predecessor:} 11... Rac8 12. Nd2 Nb8 13. b4 cxb3 14. Bxb8 Bc2 15. Qc1 Rxb8 16. Qb2 a6 17. Na3 Bf5 18. Qxb3 Qxb3 19. Nxb3 {½-½ (48) Kabanov,N (2478)-Barskij,V (2386) Sochi 2017}) 12. b3 Ne4 (12... cxb3 $142 13. Qxb3 Be6) 13. bxc4 $16 dxc4 14. Nd2 Nxd2 15. Qxd2 Nb8 16. Na3 Qa6 (16... Bd3 $16) 17. Nxc4 $1 $18 {[%cal Oc4d6]} Rxc4 18. Qa2 $1 {[%mdl 64] Pin} Be6 19. d5 {Inhibits Qc6.} Bxd5 20. Rfd1 Nd7 (20... Rxf4 $142 21. Rxd5 Qb6) 21. Rxd5 Nb6 {[%cal Rc4a4]} 22. Bxc4 Nxc4 23. Rad1 {And now Rd8+ would win.} Bf6 24. Rc5 Nb6 (24... Nd6 $142 25. Bxd6 Rd8) 25. a5 e6 26. e4 {Prevents Nd5.} Be7 27. Bd6 Rd8 28. e5 (28. Bxe7 Rxd1+ 29. Kh2 Nd7 $18) 28... Bg5 29. Qb3 Nd7 30. Rc4 (30. Rb5 $18) 30... Nxe5 $16 31. Rcd4 Nc6 32. R4d3 Rd7 ({Black should try} 32... Bf6 $14) 33. c4 {[%cal Bc3c4,Bc4c5][%mdl 32]} Qxa5 34. Qb5 (34. Bg3 $1 $16 Rxd3 35. Rxd3) 34... Qd8 35. c5 {[%mdl 1024] White has strong compensation.} a6 36. Qb1 Qa5 (36... Qa8 $16 {is a better defense.}) 37. Qb2 $2 (37. Bg3 $1 $18 Re7 38. Rd7) 37... Qa4 $1 $11 38. Ra1 Qe4 39. Bf8 $2 {[%mdl 8192]} Nd4 $19 {Dancing on a razor blade.} 40. Rad1 (40. Rxd4 {is more resistant.} Rxd4 41. Bd6) 40... Bf6 $2 ({Black should play} 40... Kxf8 $19 41. Kh1 (41. Rxd4 $2 Bf6 $19) 41... e5) 41. Qa3 $2 {[%mdl 8192]} Ne2+ (41... Kxf8 42. c6+ Re7 43. c7 $18) 42. Kf1 Rxd3 (42... Nf4 $19 43. Rxd7 Qxg2+ 44. Ke1 Qg1+ 45. Kd2 Qxf2+ 46. Kc1 Ne2+ 47. Kb1 Nc3+ 48. Kc1 Ne2+ 49. Kb1 Nc3+ 50. Kc1 Ne2+) 43. Qxd3 $11 Qxd3 44. Rxd3 $19 {[%mdl 4096] Endgame KRB-KBN} Nf4 45. Rf3 Nd5 (45... Kxf8 $11 46. Rxf4 Be7) 46. Bd6 (46. Bh6 $1 $14) 46... Bc3 $1 $11 47. Ke2 Bb4 48. Rb3 a5 {Strongly threatening ...a4.} 49. Kd3 f6 50. Kc4 Kf7 51. h4 Ke8 52. g4 Kd7 {...Kc6 is the strong threat.} 53. g5 f5 54. h5 $2 {[#]} (54. Kb5 $11 {and White is okay.}) 54... Kc6 $1 $19 {aiming for ...b5+.} (54... gxh5 55. Rh3 Kc6 56. Rxh5 b5+ 57. Kd4 $14) 55. hxg6 (55. Kd3 {might work better.}) 55... hxg6 {Threatens to win with ...b5+.} 56. Rh3 b5+ 57. Kb3 a4+ ({Worse is} 57... Bxc5 58. Bxc5 Kxc5 59. Rh8 $17) 58. Kb2 {[#]} Bd2 $1 ({Don't blunder} 58... Bxc5 $2 59. Bxc5 Kxc5 60. Rh1 $19) 59. Rh6 $2 (59. Be5 Bxg5 60. Rh8) 59... b4 $2 (59... Bc3+ $19 60. Kb1 b4) 60. Rxg6 $2 {[%mdl 8192]} (60. Be5 $17 Bxg5 61. Rxg6) 60... Bc3+ 61. Ka2 b3+ {[%cal Bb4b3,Bb3b2][%mdl 32] Black mates.} 62. Ka3 b2 63. Ka2 Nb4+ {What a fight!  Weighted Error Value: White=0.70/Black=0.50} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.29"]
[Round "5.5"]
[White "Fiorito, Fabian"]
[Black "Tokman, Ariel"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2357"]
[BlackElo "2315"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,102,39,29,44,33,33,43,64,52,61,49,77,70,100,103,117,110,83,87,121,120,163,161,190,178,218,131,287,0,0,0,0,0,0,0,0,-22,0,0,0,0,0,-11,-16,-14,-8,-14,-16,-25,15,17,17,0,0,0,0,0,0,0,0,0,16,0,0,-70,-68,-89,-71,-88,-40,-73,-27,-43,-8,-79,-79,-86,-82,-88,-79,-154,-147,-228,-226,-243,-241,-245,-190,-29975,-29976,-29973,-307]} 1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. c4 {[%cal Bc2c4,Bc4c5][%mdl 32]} cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 {A32: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6.} 8. Nc3 O-O {[%cal Od7d5]} 9. O-O h6 {White is slightly better.} 10. c5 Bc7 11. Nb5 {[#]} Be5 $146 ({Predecessor:} 11... Bb8 12. Be3 Be5 13. Qd2 Ne8 14. Rac1 f5 15. Rfd1 Qf6 16. f4 Bxb2 17. Rc2 a6 18. Rxb2 axb5 {½-½ (37) Hamer,I (1976)-Zelenika,Z (2111) Krapina 2018}) 12. e4 {[%cal Be2e4,Be4e5][%mdl 32]} b6 13. f4 Bc7 14. Nxc7 Qxc7 15. Be3 Bb7 16. Rc1 Rfd8 (16... Qb8 $16 {was necessary.} 17. e5 (17. cxb6 axb6 18. e5 Nd5 $16) 17... Nh7) 17. e5 $18 Nd5 18. Bxd5 exd5 19. Nd4 (19. Qxd5 Nxe5 20. Qd2 (20. Qxe5 $2 Qc6 $19) 20... Nf3+ 21. Rxf3 Bxf3 22. cxb6 Qb7 23. bxa7 Re8 $11) 19... bxc5 $2 {[#]} (19... Nxd4 $16 20. Bxd4 bxc5) 20. Rxc5 $2 ({White must play} 20. Nf5 $1 $18 {aiming for Qg4.} d4 21. Bd2 (21. Qg4 g6 $16)) 20... d6 $11 21. exd6 ({But not} 21. Rxd5 Nxd4 22. Rxd4 dxe5 $17) 21... Qxd6 22. Nxc6 Bxc6 {[%cal Bb7c6,Bc6d7,Bd7e6,Be6f7,Bf7h5][%mdl 32]} 23. Bd4 f6 24. Qg4 Re8 25. Rfc1 $1 Bd7 26. Qh5 Be6 27. Rc7 Re7 $1 28. Rxe7 Qxe7 29. Qe2 {[%cal Of4f5]} Qd7 30. Qa6 Bf7 31. Qc6 Qd8 32. Kf2 Rb8 33. Qc7 Qe8 34. Re1 Qf8 35. Re2 Bh5 36. Re7 {[%cal Oe7g7] Hoping for Rxg7+!} (36. Bxa7 $2 Rc8 37. Qe7 Bxe2 38. Qxe2 Ra8 $19) 36... Re8 (36... Rb4 {is more complex.} 37. Bc3 Rc4 38. Qxa7 d4 39. Re4 Bg4) 37. Bc5 {And now Rd7 would win.} Rxe7 38. Qxe7 (38. Bxe7 $11 Qf7 39. h3) 38... Qc8 $1 $15 39. Qe3 a6 40. b4 Bg6 {Prevents Qd3.} (40... Qf5 $17 41. Qd2 Qe4) 41. a3 Be4 (41... Qh3 $17 42. Kg1 (42. Qe7 $2 Qxh2+ 43. Kf1 Qh3+ 44. Ke2 Qg2+ 45. Ke1 Qxg3+ 46. Ke2 Qd3+ 47. Ke1 Be4 $19) 42... Qg4) 42. Ke1 Qe8 43. Kf2 (43. g4 $11) 43... Qh5 $17 44. h4 Qd1 45. Qe2 Qh1 {White must now prevent ...Qg2+. Black is more active.} 46. Ke3 ({Better is} 46. Qe3) 46... Qg1+ 47. Kd2 (47. Qf2 $17 Qc1+ 48. Ke2) 47... Qxg3 $19 48. Qxa6 Qxf4+ 49. Be3 Qxh4 50. Kc3 $2 {[#]} (50. Qe2 $19) 50... Qe1+ 51. Bd2 Qa1+ {Black used his chance.  Weighted Error Value: White=0.37/Black=0.15 (very precise)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.30"]
[Round "6.1"]
[White "Diaz Hollemaert, Nahuel"]
[Black "Tokman, Ariel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2439"]
[BlackElo "2315"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,115,0,0,-5,-4,0,0,0,0,0,0,0,0,0,-8,-16,-18,-12,0,0,-10,-38,-28,-28,-37,-55,-58,-38,-27,-28,-24,-24,-25,-28,-29,-31,-31,-29,-21,-81,-79,-83,-52,-166,-175,-161,-131,-200,-197,-239,-238,-283,-314,-324,-350,-329,-213,-264,-269,-299,-291,-406,-416,-464,-431,-431,-451,-434,-367,-345,-314,-327,-238,-230,0,-312,0,-252,-260,-256,-257,-248,-239,-260,-195,-177,-77,-72,-62,-70,-67,-75,-68,-66,0,0,0,0,0,0,0,0,0,0,29988,29989,29989,29990]} 1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. b3 dxc4 5. bxc4 e5 6. Nc3 {A12: English Opening: 1...c6 with b3 by White.} Bd6 7. Bg2 $1 O-O 8. O-O {The position is equal.} Na6 9. Rb1 Qe7 10. d3 Nc5 {[#]} 11. Bg5 $146 ({Predecessor:} 11. Nd2 Bf5 12. Nb3 Ne6 13. Bd2 Rad8 14. Re1 Rd7 15. h3 Bg6 16. Be3 h5 17. Bxa7 {0-1 (32) Papa,S (2414)-Braun,A (2554) Shenzhen 2011}) 11... h6 12. Bxf6 Qxf6 13. Nd2 Qe7 14. e3 Bf5 15. Nde4 (15. d4 $5 {[%cal Rd4c5]} Ne6 16. Nce4 $11) 15... Rfd8 16. Qe2 Rd7 17. Nxc5 Bxc5 {This bishop pair is nice.} 18. Ne4 Bb6 19. g4 Be6 20. Rfc1 Rb8 21. c5 Bc7 22. Ng3 Rdd8 23. Be4 g6 24. Bg2 (24. Rb4 $11) 24... Qd7 $17 {[%csl LRd3,LRg4]} 25. Ne4 Kg7 {To avoid Nf6} 26. g5 {[#]} (26. Qf3 $15) 26... hxg5 $1 $19 27. Nxg5 Bg4 (27... Qxd3 28. Qxd3 Rxd3 29. Nxe6+ fxe6 30. Rb2 $11) 28. f3 (28. Bf3 $17 Bxf3 29. Qxf3) 28... Bf5 29. Rb3 (29. e4 $142 Qd4+ 30. Kf1) 29... Bxd3 30. Qb2 Qe7 31. Ne4 Bxe4 32. fxe4 b5 {White must now prevent ...Ba5.} 33. cxb6 Bxb6 (33... Rxb6 $2 34. Qc2 $19) 34. Qe2 Rd6 35. Rd3 Rxd3 36. Qxd3 Rd8 37. Qc3 Qg5 38. Re1 Rh8 39. Re2 Rh3 {[%cal Rb6e3]} 40. Kh1 Rh5 ({Weaker is} 40... Bxe3 41. Qe1 Bd2 42. Qxd2 Qxd2 43. Rxd2 $16) 41. Bf3 Rh3 42. Bg2 Rh8 (42... Bxe3 43. Qe1 Bd2 44. Qxd2 Qxd2 45. Rxd2 $16) ({Black should play} 42... Rxe3 $19 43. Rxe3 Bxe3 44. Qxc6 Qh4) 43. Qe1 {[%mdl 8192]} (43. Kg1 $1 $11 {and White stays safe.} Rh3 44. Kh1) 43... Qh5 {[%csl Gh8][%cal Rh5h2]} 44. h3 Rd8 {[%cal Ob6e3]} 45. Kh2 Rd3 46. Bf1 Rd6 47. Qg3 Rd1 (47... Bd8 $19 {has better winning chances. And now ...Rd1 would win.} 48. Rg2 Bh4) 48. Rf2 $17 {Hoping for Be2.} Rd7 49. Be2 Qh6 50. Qxe5+ {[#]} Kf8 $1 {Threatens to win with ...Bc7.} ({But not} 50... Kh7 51. Qe8 Qxe3 52. Rxf7+ Rxf7 53. Qxf7+ Kh8 54. Qf8+ Kh7 55. Qf7+ Kh8 56. Qf8+ Kh7 57. Qf7+ $11) 51. Qb8+ Kg7 ({Better is} 51... Bd8 $15 52. Qf4 Bc7) 52. Qe5+ $1 $11 ({Not} 52. Rf4 $2 Bc7 53. Qb2+ Kg8 $19) 52... Kh7 {...Bc7 is the strong threat.} 53. Qe8 $1 {[%csl LRd7,LRf7]} Qxe3 54. Rxf7+ Rxf7 55. Qxf7+ Kh6 {[%csl Gb6][%cal Re3g1]} 56. Qf8+ Kg5 $2 {[%mdl 8192]} (56... Kh7 $11 57. Qe7+ Kh8 58. Qf6+ Kh7 59. Qe7+ Kh8 60. Qf6+ Kh7 61. Qe7+) 57. h4+ $1 Kxh4 58. Qf6+ {Never resign too early!  Weighted Error Value: White=0.19 (very precise) /Black=0.40} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.30"]
[Round "6.2"]
[White "Paveto, Kevin"]
[Black "Fiorito, Fabian"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2462"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "193"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,193,59,49,83,59,96,28,25,0,16,10,37,40,27,34,36,22,54,49,47,46,63,56,49,35,59,47,43,55,90,32,33,32,39,0,0,0,0,-179,-174,-177,-181,-251,-245,-229,-246,-239,-248,-252,-254,-341,-231,-218,-235,-228,-225,-223,-177,-239,-229,-328,-339,-283,-322,-410,-418,-462,-457,-443,-443,-427,-406,-526,-383,-364,-228,-213,-217,-216,-211,-196,-187,-157,-166,-374,-297,-272,-254,-895,-851,-639,-331,-331,-314,-261,0,0,0,-450,-383,-29984,-29985,-29985,-29986,-29986,0,0,0,-29986,0,0,0,-29986,0,0,0,0,0,0,0,-848,0,-420,0,0,0,0,0,0,0,0,0,-3894,-3050,-3569,-845,-29971,-29972,-29948,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. f3 Bg7 8. Be3 O-O 9. Qd2 Bd7 10. Be2 Nxd4 11. Bxd4 a5 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0.} 12. h4 a4 {[#]} 13. a3 $146 ({Better is} 13. h5 $16) ({Predecessor:} 13. h5 Qa5 14. g4 Be6 15. Kf2 Rfc8 16. b3 b5 17. h6 Bh8 18. g5 Ne8 19. Bxh8 Kxh8 {1-0 (45) Baldauf,M (2470)-Hausrath,D (2493) Germany 2018}) 13... Be6 {White has an edge.} 14. h5 Qa5 $1 (14... Nxh5 $2 15. Bxg7 Nxg7 16. Qh6 $16) 15. hxg6 fxg6 16. Qe3 Rac8 17. Bb6 Qa8 (17... Qe5 $2 18. f4 Nd5 19. exd5 $18) 18. Nd5 Nxd5 19. exd5 Bd7 20. O-O-O Rce8 21. Qf2 {White is more active.} Rf7 {[%cal Bf8f7,Bf7g7,Bg7g6][%mdl 32]} 22. Bd4 Qa5 23. Bd3 Bxd4 24. Qxd4 {[%cal Od3g6] Black must now prevent Bxg6!} Rg7 25. Rh6 (25. Rhe1 $16) 25... Rc8 26. Kb1 Qc5 27. Qh4 Qe3 $1 28. Ka1 Rf8 29. Bxg6 $2 Rxg6 $19 (29... hxg6 $2 30. Re1 Qxh6 31. Qxh6 $18) 30. Rxh7 {And now Rh8+ would win.} Qg5 $1 31. Rh8+ (31. Qxg5 {was called for.} Rxg5 32. Rxe7) 31... Kf7 32. Rh7+ Ke8 33. Qd4 Rh6 (33... Qxg2 34. c5 Qg3 35. cxd6 Qxd6 36. Qa7 $17) 34. Rxh6 Qxh6 35. Qa7 Qf4 36. Qb8+ Kf7 37. Qxb7 Bc8 38. Qc7 Ba6 39. Re1 (39. Qd7 {might work better.} Bxc4 40. Qe6+ Kg7 41. Qxe7+ Rf7 42. Qd8 Bxd5 43. g3 (43. Rxd5 $2 Qc1+ 44. Ka2 Qc4+ 45. Ka1 Qxd5 $19)) 39... Re8 $1 40. c5 (40. Qd7 Bxc4 41. Qxa4 Qd2 $1) (40. Qa5 $142 Bxc4 41. Qxa4) 40... Qd2 $1 {[%csl LRd5,LRe1,LRg2]} 41. Rh1 Qxg2 (41... Qxd5 42. cxd6 Qxd6 43. Qa5 $17) 42. Re1 Qf2 43. Rc1 Rc8 44. Qd7 Rxc5 45. Rh1 {White threatens Qf5+ and mate.} Rxd5 46. Qxa4 Rb5 {[%csl Gb5][%cal Rf2b2]} 47. Qc4+ d5 {[%csl Gb5][%cal Rf2b2]} 48. Qf4+ Ke8 {[%csl Gb5][%cal Rf2b2]} 49. Rh8+ Kd7 {[%csl Gb5][%cal Rf2b2]} 50. Qf5+ {[#]} Kc7 $1 {[%csl Gb5][%cal Rf2b2]} 51. Qe5+ Kb6 52. Qb8+ $2 (52. b4 Bb7 53. Rh7) 52... Ka5 {[%csl Gb5][%cal Rf2b2]} 53. Qc7+ Ka4 {[%csl Gb5][%cal Rf2b2]} 54. Qf4+ $2 (54. Rh2 Qf1+ 55. Ka2 Qc4+ 56. Qxc4+ dxc4 57. Re2) 54... Kb3 {[%csl Gb3][%cal Rf2b2]} 55. Qc1 Rc5 {[%cal Rc5c1]} (55... Qc2 $2 56. Qe3+ Ka4 57. Rh4+ Ka5 58. Qe1+ Kb6 59. Rh6+ Ka7 60. Qxe7+ Bb7 61. Qe3+ Rc5 62. Rd6 $19) 56. Rb8+ Bb5 {[%cal Rc5c1]} (56... Ka4 57. Qd1+ Rc2 58. Kb1 $18) 57. Qb1 {Qd3+ would kill now.} (57. Qd1+ $2 Qc2 58. Qb1 Qxb1+ 59. Kxb1 d4 $19) 57... Kc4 {To avoid Qd3+} (57... Qxf3 $19 {Threatens to win with ...Kc4.} 58. Qa2+ Ka4 59. b3+ Ka5 60. b4+ Ka6 61. bxc5 Qc3+ 62. Qb2 Qe1+ 63. Qb1 (63. Ka2 $2 Bc4+ 64. Rb3 Qe3 $19) 63... Qe5+ 64. Qb2 Qxb8) 58. Qd1 $11 {The board is on fire.} d4 59. a4 $2 {[%mdl 8192]} (59. Qc1+ $1 $11 Kb3 60. Qb1 Qxf3 61. Qa2+ Ka4 62. b3+ Ka5 63. b4+ Ka4 64. bxc5 Qc3+ 65. Qb2 Qe1+ 66. Qb1 Qc3+ 67. Qb2 Qe1+ 68. Qb1 Qc3+ 69. Qb2) 59... d3 $19 60. Rxb5 $2 (60. Kb1 $19 Qc2+ 61. Qxc2+ dxc2+ 62. Kxc2 Bxa4+ 63. Kd2) 60... Rxb5 61. axb5 {KQ-KQ} Qc2 62. Qe1 Qa4+ $2 (62... Kxb5 63. Qxe7 Qe2 64. Qd7+ Kc5 65. Qf5+ Kc4 66. Qf7+ Kc5 67. Qf5+ Kd6 68. Qf6+ Kc7 69. Qf4+ Kc6 70. Qf6+ Kd7 71. Qf7+ Kc8 72. Qf5+ Kd8 73. Qf8+ Kd7 74. Qf7+ Kd8 75. Qf8+ Kd7 76. Qf7+ $11) (62... d2 63. Qe6+ Kb4 64. Qxe7+ Qc5 65. Qe2 Qc1+ 66. Ka2 Qe1 67. Qe4+ Qxe4 68. fxe4 d1=Q 69. b6 Qd7 70. b7 Qxb7 71. e5 Qd5+ 72. b3 Qxe5 73. Kb1 Kxb3 74. Kc1 Qe1#) 63. Kb1 $11 Qc2+ $2 {[%mdl 8192]} (63... Qxb5 64. Qe4+ Kc5 65. Qxe7+ Kb6 66. Qf7 $14) (63... Kd5 $11 64. Qe4+ (64. b6 Qc2+ 65. Ka2 d2 66. Qxe7 Qa4+ 67. Qa3 d1=Q 68. Qxa4 Qxa4+ 69. Kb1 Qb4 70. b7 Kc4 71. Kc2 Qxb7 72. Kd2 Qxf3 73. b3+ Kb4 74. Ke1 Kc3 75. b4 Kd3 76. b5 Qe2#) 64... Qxe4 65. fxe4+ Kxe4) 64. Ka1 $1 Qa4+ (64... Kxb5 65. Qxe7 Qe2 66. Qd7+ Kc5 67. Qf5+ Kc6 68. Qf6+ Kc7 69. Qf4+ Kb6 70. Qd4+ Kc6 71. Qf6+ Kd7 72. Qd4+ Ke6 73. Qg4+ Kf7 74. Qf4+ Ke6 75. Qg4+ Ke5 76. Qg5+ Ke6 77. Qg4+ $11) 65. Kb1 {Strongly threatening Qc3+.} Qc2+ (65... Qxb5 66. Qe4+ Kc5 67. Qxe7+ Kb6 68. Qf7 $14) 66. Ka1 $1 Qe2 $2 (66... Kxb5 67. Qxe7 Qe2 68. Qd7+ Kc5 69. Qf5+ Kc6 70. Qf6+ Kc7 71. Qf4+ Kb6 72. Qd4+ Kc6 73. Qf6+ Kd7 74. Qd4+ Ke6 75. Qg4+ Kf7 76. Qf4+ Ke6 77. Qg4+ Ke5 78. Qg5+ Ke6 79. Qg4+ $11) (66... d2 67. Qe6+ Kb4 68. Qxe7+ Qc5 69. Qe2 Qg1+ 70. Ka2 d1=Q 71. Qe7+ Qc5 72. Qxc5+ Kxc5 73. b6 Kxb6 74. f4 Kb5 75. f5 Kb4 76. f6 Qd5+ 77. b3 Qd2+ 78. Ka1 Kxb3 79. f7 Qe1#) 67. Qc3+ Kxb5 {Hoping for ...d2.} 68. Qb3+ Kc5 (68... Kc6 $5 {[%cal Re2e1]} 69. Qc4+ Kd6 $11) 69. Qa3+ Kd5 (69... Kb5 $6 70. Qb3+ Kc5 71. Qc3+ Kd5 72. Qb3+ Kc5 $17) 70. Qa8+ $2 {[%mdl 8192] [#]} (70. Qb3+ $11 Ke5 71. Qb4) 70... Ke6 $1 $19 71. Qg8+ $2 {[%mdl 8192]} (71. Qc8+ $1 $11 {and White is okay.} Kf6 72. Qc3+ Kg6 73. Qb4) 71... Kf5 $2 ({Black should try} 71... Kf6 $19 {( -> ...d2)} 72. Qg1 Qxf3 73. Qb6+ Kf5 74. Qc5+ Kf6 75. Qd4+ Ke6 76. Qc4+ Qd5 77. Qg4+ Kd6 78. Qb4+ Kd7 79. Qa4+ Kd8) 72. Qg4+ $1 $11 Ke5 {...Qe1+ is the strong threat.} 73. Qg5+ Kd6 74. Qf4+ Kd5 75. Qf5+ Kc4 {aiming for ...d2.} (75... Kc6 76. Qg6+ Kb5 77. Qh5+ Kc6 78. Qg6+ Kc7 79. Qg5 $17) 76. Qc8+ $2 {[%mdl 8192]} (76. Qa5 $11) 76... Kd4 $19 77. Qd7+ Ke3 78. Qxe7+ Kf2 ({Worse is} 78... Kxf3 79. Qf6+ Kg2 80. Qg5+ Kf1 81. Qf5+ Ke1 82. Qg5 $17) 79. Qh4+ Kxf3 $2 (79... Kg2 {mates} 80. Qg4+ Kf1 81. Qh3+ Qg2 82. Qd7 d2 83. Kb1 Ke1 84. Qe7+ Qe2 85. Qh4+ Qf2 86. Qb4 Qg1 87. Ka2 Qe3 88. Qh4+ Ke2 89. Qc4+ Qd3 90. Qe6+ Kf2 91. Qb6+ Kf1 92. Qe6 Qd4 93. Qh3+ Ke2 94. Qh2+ Qf2 95. Qe5+ Kf1 96. Qd5 Qe2 97. Qd8 d1=Q 98. Qxd1+ Qxd1 99. Ka3 Qxf3+ 100. Kb4 Qc6 101. Ka5 Ke2 102. b4 Kd3 103. b5 Qb7 104. Kb4 Qb6 105. Ka3 Qxb5 106. Ka2 Kc3 107. Ka3 Qb3#) 80. Qh3+ $11 {The position is equal.} Kf2 81. Qh4+ Ke3 82. Qh6+ Kf3 83. Qh3+ Kf2 84. Qh4+ Kg1 85. Qg3+ Kf1 86. Qh3+ $1 Ke1 87. Qh4+ $1 Kd2 (87... Qf2 88. Qe4+ Qe2 89. Qh1+ Qf1 90. Qe4+ Qe2 91. Qh4+ Kf1 92. Qh3+ Kf2) 88. Qb4+ Kd1 89. Qa4+ Kc1 {[%csl Gc1][%cal Re2b2]} 90. Qc6+ Qc2 91. Qh6+ $1 d2 {[%csl Gc1][%cal Rc2b2]} 92. Qh1+ d1=Q {[%csl Gc1][%cal Rc2b1]} (92... d1=R $5 93. Qh6+ Qd2 94. Qc6+ Qc2 95. Qh6+ Rd2 96. Qh1+ Rd1 97. Qh6+ $11) 93. Qh6+ Qdd2 {[%csl Gc1][%cal Rc2b1]} 94. Qh1+ Qcd1 {[%csl Gc1][%cal Rd2b2]} 95. Qc6+ Q1c2 96. Qh1+ Qdd1 {[%csl Gc1][%cal Rc2b1]} 97. Qh6+ {Weighted Error Value: White=0.60/Black=0.26 (precise)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.30"]
[Round "6.3"]
[White "Flores, Diego"]
[Black "Roselli Mailhe, Bernardo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2566"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,49,29,19,10,17,29,16,27,31,0,15,29,19,27,20,0,0,-32,-16,-36,0,0,15,-59,-28,-33,2,0,37,-53,-23,-86]} 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1 c6 9. Bf1 a5 10. d5 Nc5 11. h3 {E96: King's Indian: Classical: 7...Nbd7 8 Re1 c6 9 Bf1 a5.} Bd7 12. dxc6 Bxc6 {[%cal Rf6e4] [#]} 13. Qc2 $146 {The position is equal.} ({Predecessor:} 13. Bd3 Ne8 14. Bg5 f6 15. Be3 Nc7 16. Qe2 N7e6 17. Rad1 f5 18. exf5 gxf5 19. Bb1 {½-½ (41) Malich,B (2450)-Portisch,F (2410) Halle-Neustadt 1982}) 13... Rc8 14. Bd3 Qd7 15. Be3 {[%cal Of3e5]} b6 16. Rad1 Qb7 {[%cal Rc5e4]} 17. Bxc5 bxc5 18. Nd5 Nh5 19. Bf1 Bh6 20. g4 Nf4 21. Nxf4 (21. Nf6+ $11 Kh8 22. Rxd6) 21... exf4 22. Rxd6 Rfd8 {[#]} (22... Rfe8 $5 {[%cal Rc6e4]}) 23. Rd5 Bxd5 (23... Bg7 24. b3) 24. exd5 (24. cxd5 $14 Bg7 25. b3) 24... Re8 25. Bd3 {Weighted Error Value: White=0.26 (precise) /Black=0.17 (very precise)} (25. Rb1 $11) 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.30"]
[Round "6.4"]
[White "Santiago, Yago De Moura"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2494"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,62,27,22,12,17,-10,-13,-8,-2,-11,0,-1,0,-13,0,-6,0,0,11,8,19,22,20,20,9,0,0,0,0,0,17,27,26,0,0,-38,0,-202,-202,-298,-296,-300,-294,-295,-282,-283,-294,-533,-525,-877,-868,-29973,-29974,-29974,-29974]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. b3 {D26: Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines.} c5 7. dxc5 Qxd1+ 8. Kxd1 {The position is equal.} Bxc5 9. Bb2 {[#]} b5 $146 ({Predecessor:} 9... Nbd7 10. Nbd2 b5 11. Bd3 Bb7 12. Ke2 Bd6 13. Rhc1 Nc5 14. Bb1 Ke7 15. g3 Rhc8 {0-1 (45) Daly,C (2369)-Baburin,A (2586) Bunratty 1999}) 10. Bd3 Bb7 11. Nbd2 {[%cal Bb1d2,Bd2c4,Bc4a5][%mdl 32]} O-O 12. Ke2 Nbd7 13. a4 b4 14. Rac1 Rac8 15. Nc4 Be7 16. Na5 Bd5 17. Bxf6 Bxf6 18. e4 Ba8 ({Don't take} 18... Rxc1 19. Rxc1 Ba8 20. Rc7 $16) 19. Bxa6 ({Much weaker is} 19. Rxc8 Rxc8 20. Rd1 Nc5 $15) 19... Rxc1 (19... Rc3 {keeps more tension.} 20. Bb5 Nc5 21. e5 Bxf3+ 22. gxf3 Bxe5 23. Rxc3 Bxc3 24. Rd1 g5) 20. Rxc1 {Black must now prevent Rc7.} Bc3 $1 21. Rd1 Nc5 22. Bc4 (22. Bd3 $5) 22... Bxe4 {This bishop pair is nice.} (22... Bf6 $5 {[%cal Rf6d8]}) 23. Ne1 $2 {[#]} (23. Nd4 $1 $11 {and White is okay.}) 23... Ra8 $19 24. f3 (24. Bb5 $142) 24... Bd5 $1 25. Bxd5 exd5 (25... Rxa5 26. Bc4 Kf8 27. Nc2 $11) 26. Nc6 Re8+ ({Stronger than} 26... Nxb3 27. Ne7+ Kf8 28. Nxd5 $15) 27. Kf1 Nxb3 {Threatens to win with ...Nd2+.} 28. a5 $2 {[#]} (28. Nd3 Nd2+ 29. Rxd2 Bxd2 30. Ndxb4) 28... Nd2+ 29. Kf2 Re6 30. Nd8 Bd4+ 31. Kg3 Nf1+ {Weighted Error Value: White=0.76/Black=0.04 (flawless)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.30"]
[Round "6.5"]
[White "Romero Barreto, Jaime Jose"]
[Black "Labollita, Martin"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2333"]
[BlackElo "2388"]
[Annotator "TA"]
[PlyCount "42"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,42,-17,-6,-12,-23,-403,-4,-14,-10,-30,-34,-23,-38,-45,24,0,0,0,0,-14,-21,-19,-5,-6,5,-1,-3,-9,-9,-7,-5,-12,0,-8,0]} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Bb5+ Bd7 6. Qe2 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5.} dxe4 7. Nxe4 {[%mdl 8192] [#]} (7. Nxd4 $11 {and White is okay.} Qb6 8. c3) 7... Nf6 $2 ({Black should try} 7... Qa5+ $19 8. Bd2 Qxb5 9. Qxb5 Bxb5 10. Nxd4 Bc4) 8. Nxd4 Nxe4 9. Qxe4 Bxb5 10. Nxb5 Qa5+ 11. Nc3 {[#]} Qa6 $146 (11... Nc6 $15) ({Predecessor:} 11... Nc6 12. Bd2 Be7 {½-½ (12) Buksa,N (2437)-Burcu,C (2333) Lvov 2018}) 12. a4 {[#] Strongly threatening Nb5.} Be7 {The position is equal.} 13. Nb5 {Nc7+ is the strong threat.} O-O $1 14. O-O {Threatens to win with Nc7.} Qc6 {To avoid Nc7} 15. Qe2 Bf6 16. Rd1 $1 $36 {[%mdl 2048] White is pushing.} a6 17. Nd4 Qc7 18. Nf3 Nc6 19. c3 Rfd8 20. Be3 Qa5 21. Qc2 h6 {Weighted Error Value: White=0.44/Black=0.38} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.31"]
[Round "7.1"]
[White "Labollita, Martin"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2388"]
[BlackElo "2439"]
[Annotator "TA"]
[PlyCount "27"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,24,24,25]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 O-O 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O {11.Ne4 is not played anymore.} Nxc3 12. Rxc3 e5 {[#]} {Predecessor:} 13. Bb3 $146 {D68: Queen's Gambit Declined: Classical Main Line with 9...Nd5 and 12...e5.} exd4 14. exd4 {½-½ (14) Del Rio de Angelis,S (2510)-Narciso Dublan,M (2521) Alicante 2021} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.31"]
[Round "7.2"]
[White "Pichot, Alan"]
[Black "Romero Barreto, Jaime Jose"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2625"]
[BlackElo "2333"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,61,12,21,20,50,48,69,52,58,33,43,58,39,20,176,76,98,39,63,31,61,35,60,16,31,29,122,136,129,137,575,429,393,406,2492,1161,29993,29994]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Nbd2 Nd7 11. c3 Nc5 12. axb5 $1 {12.axb5 scores better than 12.Bc2.} axb5 13. Rxa8 Qxa8 14. Bc2 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} Bf6 15. Nf1 Ne7 {[#]} 16. h4 $146 {White is slightly better.} ({Predecessor:} 16. Ng3 Ng6 17. d4 Ne6 18. Nh5 Be7 19. d5 Nd8 20. Qe2 c6 21. dxc6 Bxc6 22. Ng3 {½-½ (35) Banzea,A (2373)-Swayams,M (2432) Bucharest 2019}) 16... d5 {[%cal Rd5e4]} 17. Qe2 Ne6 {[%cal Ob5b4]} 18. N1h2 h5 {Inhibits Ng4.} 19. Ng5 g6 $2 (19... Bxg5 $11 20. hxg5 b4) 20. g4 (20. Nxe6 $18 {is more deadly.} fxe6 21. Nf3) 20... Ng7 21. Qf3 (21. d4 $16) 21... Qa6 22. Be3 (22. d4 $5) 22... d4 23. Bd2 c5 24. Bb3 c4 25. dxc4 bxc4 {[#]} (25... Bxg5 $11 {remains equal.} 26. Bxg5 bxc4 27. Bxe7 Re8) 26. Bxc4 $1 $16 {[%mdl 512]} Qxc4 27. Qxf6 Qd3 $2 {[%mdl 8192]} (27... Nc6 $16) 28. Qxe7 Qxd2 29. Nhf3 {Chess con chili.} Qxb2 {[#]} (29... Qf4 $142) 30. Nxe5 (30. Nh7 $142 $1 {[%mdl 512]} Ne6 31. Nxf8 Nxf8 32. Nxe5) 30... dxc3 31. Nd7 {Weighted Error Value: White=0.28 (precise) /Black=1.20} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.31"]
[Round "7.3"]
[White "Roselli Mailhe, Bernardo"]
[Black "Santiago, Yago De Moura"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2426"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,0,0,0,7,0,10,-39,-31,-25,-32,-33,-32,-32,-30,-17,-9,-24,-31,-35,-27,-45,-39,-43,-26,-74,-30,-18,-18,-70,-52,-90,-103,-93,-84,-105,-95,-113,-91,-125,-128,-157,-27,-29,-29,-41,61,-2,0,-663,-643,-809,-796,-29973,-29973,-29969,-29955,-5152,-4902]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nc3 d5 5. Nb5 Na6 6. e3 {D00: 1 d4 d5: Unusual lines.} c6 7. Nc3 Qb6 8. a3 {[#]} (8. Rb1 $11 {deserves consideration.}) 8... Nh5 $146 (8... Qxb2 $2 9. Na4 Qxa1 10. Qxa1 $18) ({Predecessor:} 8... O-O 9. b4 Bg4 10. Be2 Nd7 11. Nd2 Bxe2 12. Nxe2 e5 13. dxe5 Nxe5 14. Bxe5 Bxe5 {1-0 (45) Gukesh,D (2578)-Maenhout,T (2394) Guimaraes 2021}) 9. Bg5 h6 10. Bh4 g5 (10... Qxb2 $2 11. Na4 Qxa1 12. Qxa1 $18) 11. Bg3 Nxg3 (11... Qxb2 $2 12. Na4 Qxa1 13. Qxa1 $18) 12. hxg3 Nb8 {[%cal Oe7e5,Ba6b8,Bb8d7,Bd7b6,Bb6c8,Bc8d6][%mdl 32]} (12... Qxb2 $2 13. Na4 Qxa1 14. Qxa1 $18) 13. b4 (13. Na4 $5 {[%cal Ra4b6]} Qc7 14. Bd3 $11) 13... Nd7 14. Bd3 e5 $36 {[%mdl 2048] With the idea ...e4. Black is more active.} 15. Bf5 e4 16. Nd2 Qc7 17. Qe2 (17. Ne2 $11) 17... Nb6 (17... a5 $5 {[%cal Ra5b4]} 18. b5 O-O $11) 18. Bxc8 Nxc8 19. Nb3 ({Better is} 19. Na2 $11) 19... Nd6 20. Nb1 O-O 21. N1d2 f5 22. c4 f4 23. gxf4 gxf4 {[%cal Bg5f4,Bf4e3,Be3e2][%mdl 32]} 24. Qg4 dxc4 25. Nc5 c3 (25... Qf7 $1 $17 {...fxe3 is the strong threat.} 26. Qh5 b6 27. Qxf7+ Rxf7 28. Ncxe4 fxe3 $1 29. Nxd6 (29. fxe3 Nxe4 30. Nxe4 Re8 $17) 29... exd2+ 30. Ke2 Rf4 31. Nxc4 c5) 26. Ndxe4 $11 Nxe4 {Really sharp!} 27. Nxe4 {Black must now prevent Rxh6.} Rae8 (27... fxe3 $1 $15 28. f3 a5) 28. f3 (28. Nxc3 fxe3 29. f3 Qd6 $11) ({White should try} 28. Qg6 $14 Qd7 29. Rxh6 (29. Nxc3 $2 Qxd4 30. O-O fxe3 $19) 29... Rxe4 30. Qh7+ Kf7 31. Rg6 (31. Qg6+ Kg8 $14)) 28... fxe3 {And now ...c2 would win.} 29. Rxh6 $2 {[%mdl 8192] [#]} (29. Nxc3 $11 Qd6 30. Ne2) 29... Rxe4 $1 $19 {[%mdl 512]} 30. fxe4 {[#] Threatens to win with e5.} (30. Qg6 Rf7) 30... Qf7 $1 {[%csl Gf8][%cal Rf7f1]} 31. O-O-O Qa2 {[%csl Gc3][%cal Ra2b2]} ({Worse is} 31... Qf2 32. Qe6+ Rf7 33. Qc8+ Rf8 34. Qe6+ Rf7 35. Qc8+ Bf8 36. Qg4+ Bg7 37. Qc8+ $11) 32. Qe6+ Qxe6 33. Rxe6 e2 {Weighted Error Value: White=0.73/Black=0.17 (very precise)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.31"]
[Round "7.4"]
[White "Fiorito, Fabian"]
[Black "Flores, Diego"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2357"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,91,37,17,50,31,34,36,47,50,49,9,37,29,58,49,45,29,45,45,37,22,33,35,9,22,81,84,188,197,346,345,342,310,315,306,532,535,558,493,543,536,574,589,568,556,654,651,566,594,603,545,1475,845,1527,1183,1163,1131,29970,29971,29983,29984,29984,29985,29985,29985,29985,29986,29989,29988,29988,29989]} 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 O-O 10. Nf3 Na6 11. O-O Nb4 {11...Nb4 scores better than 11...Nc7.} 12. Be3 a6 {A67: Modern Benoni: Taimanov Variation.} 13. Be2 Re8 14. Bf2 f5 {White is slightly better.} 15. exf5 gxf5 {[#]} 16. Ra3 $146 (16. Ng5 {seems wilder.} Nf8 17. Bh5 Ng6 18. Qd2) ({Predecessor:} 16. Ng5 Nf8 17. Bh5 Re7 18. Bh4 Bf6 19. Re1 h6 20. Nf3 Bxh4 21. Nxh4 Rg7 22. Nf3 {0-1 (46) Davtyan,A (2440)-Shahinyan,D (2452) Yerevan 2019}) 16... Nf8 17. a5 Ng6 18. g3 Bd7 19. Ng5 {[%cal Og5e6]} Qf6 {Inhibits Ne6.} 20. Bc4 Nf8 {Prevents Ne6.} 21. Ra1 h6 22. Nf3 Qf7 23. Qb3 Kh8 (23... Qh5 $11 {remains equal.}) 24. Na2 $16 {White leaves nothing to chance now.} b5 (24... Nxa2 $16 25. Rxa2 Bb5) 25. axb6 $18 Rab8 (25... Reb8 $142 26. Nxb4 Rxb6) 26. Nxb4 Rxb6 {[#]} 27. Qd3 $1 Rxb4 28. Rxa6 Qe7 $2 (28... Re4 {was necessary.}) 29. Re1 Qe4 30. Rxe4 fxe4 31. Qf1 Rxb2 {[#]} 32. Ne5 dxe5 33. fxe5 Rxe5 {And now ...Rf5 would win.} 34. Bxc5 Rf5 35. Qc1 {Hoping for g4.} Rh5 36. h4 Bh3 37. Bf1 {Inhibits Rg2+.} Rb3 38. Bxh3 {Threatens to win with Bxf8.} Rxg3+ 39. Bg2 {Black must now prevent Qf4.} Ng6 {Inhibits Qf4.} 40. Bf2 {White mates.} Rc3 41. Qd1 e3 42. Qxh5 exf2+ 43. Kxf2 Rc2+ 44. Ke1 Bc3+ 45. Kd1 Rd2+ 46. Kc1 {Weighted Error Value: White=0.08 (flawless) /Black=0.62} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.03.31"]
[Round "7.5"]
[White "Tokman, Ariel"]
[Black "Paveto, Kevin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2315"]
[BlackElo "2462"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,64,12,48,41,48,61,39,69,77,72,109,107,104,77,66,65,70,65,66,25,58,48,119,115,98,103,112,114,125,118,148,145,147,149,146,141,105,119,318,310,413,432,427,418,414,413,400,400,400,400,847,833,817,777,5393,1334,29986]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qc2 Bg7 6. e4 $1 {A16: English Opening: 1...Nf6 with ...d5.} (6. Nxd5 Qxd5 7. e3 Bf5 $11) 6... Nb6 7. d4 $1 O-O 8. Be3 {White is slightly better.} Bg4 9. Ne5 Bxe5 10. dxe5 Nc6 11. h3 ({Don't play} 11. f3 Be6 $14) 11... Be6 12. Rd1 Qc8 13. f4 Rd8 14. Be2 {[#]} Rxd1+ $146 ({Predecessor:} 14... Nb4 15. Qb1 Rxd1+ 16. Bxd1 Nc4 17. Kf2 c5 18. Be2 Nxe3 19. Kxe3 c4 {1-0 (43) Pogorelov,R (2477)-Fernandez Barrera,V (2302) Albacete 2009}) 15. Qxd1 Nc4 (15... Bc4 $14) 16. Bxc4 $16 Bxc4 17. b3 Be6 18. O-O Qd8 19. Qe2 {Threatens to win with f5.} f5 {[#]} 20. exf6 $1 exf6 21. f5 Bf7 22. fxg6 {&Bianco is more active.} hxg6 23. Nd5 {Against Qe7} f5 {This move loses the game for Black.} (23... Bxd5 $16 {keeps fighting.} 24. exd5 Qxd5) 24. Rd1 $18 Bxd5 25. exd5 ({Weaker is} 25. Rxd5 Qe7 $16) 25... Ne5 26. Bf4 Nf7 27. Qe6 {Against Qd7} Kg7 28. Rc1 Rc8 29. d6 {[%cal Bd5d6,Bd6d7][%mdl 32] [#] d7 is the strong threat.} c6 (29... Qe8 $142 30. Qc4 Qe4 31. Qxe4 (31. dxc7 Qxc4 32. Rxc4 g5 $18) 31... fxe4 32. dxc7 Kf6) 30. d7 {White is clearly winning.} Ra8 31. Rd1 Qa5 32. Be3 {Qe7 would kill now.} Qd8 {Prevents Qe7.  Weighted Error Value: White=0.03 (flawless) /Black=0.30} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.01"]
[Round "8.1"]
[White "Diaz Hollemaert, Nahuel"]
[Black "Paveto, Kevin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2439"]
[BlackElo "2462"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,39,1,9,0,33,31,33,26,56,52,93,95,90,81,97,93,131,129,205,218,222,214,202,212,240,249,277,270,360,357]} 1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 O-O 5. g3 d6 6. d4 e5 7. dxe5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3.} Ng4 {[%cal Rd6e5] 7...dxe5 is more fashionable.} 8. Nc3 {[%cal Bb1c3,Bc3d5,Bd5f4,Bf4d3][%mdl 32] Hoping for exd6.} Nxe5 9. Nxe5 {White is slightly better.} Bxe5 10. Bg2 Nc6 11. Qd2 Be6 12. O-O {[#]} f5 $146 ({Predecessor:} 12... Bg7 13. Nd5 Bxd5 14. Bxd5 Qe7 15. Rac1 Rfe8 16. e3 Bxb2 17. Qxb2 Qe5 18. Qxe5 Rxe5 {1-0 (50) Ivanov,V (2373)-Gronde,I (2219) Germany 2016}) 13. Nd5 Qd7 14. Nf4 {&Bianco is more active.} Kg7 (14... Bxb2 $16 15. Qxb2 Nd8) 15. Bxc6 $18 bxc6 16. Bxe5+ dxe5 17. Qc3 Kf6 18. Rad1 {Against Qd4} Qe7 19. Nd3 Qd6 20. e3 {Black got outplayed after the opening.  Weighted Error Value: White=0.00 (flawless) /Black=0.30} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.01"]
[Round "8.2"]
[White "Flores, Diego"]
[Black "Tokman, Ariel"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2566"]
[BlackElo "2315"]
[Annotator "TA"]
[PlyCount "236"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 99,236,-190,-56,-56,0,0,0,0,40,0,0,-8,-8,-8,-8,-8,-8,-12,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,27,27,27,27,27,27,27,27,27,27,89,27,27,27,27,27,27,27,27,27,27,27,27,0,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,8,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,0,8,0,27,27,27,0,27,0,8,0,27,27,27,27,27,27,28,28,28,28,28,-8,-8]} 1. c4 c6 2. Nf3 Nf6 3. g3 d5 4. Bg2 e6 5. O-O Be7 6. b3 O-O 7. Bb2 a5 8. Nc3 Nbd7 9. Qc2 b6 10. e4 dxc4 11. bxc4 e5 12. Nd1 Qc7 13. Ne3 Re8 14. Rad1 Bc5 15. Nf5 g6 16. d4 exd4 17. Nh6+ Kg7 18. Qc1 Nxe4 19. Nxd4 Nef6 20. Ndf5+ Kf8 21. Rxd7 Bxd7 22. Bxf6 Re6 23. Qg5 Ra7 24. Rd1 Re2 25. Nd4 Qd6 26. Bf3 Rxa2 27. Bg7+ Ke8 28. Re1+ Be6 29. Bxc6+ Rd7 30. Qd5 Kd8 31. Bf6+ Kc8 32. Bxd7+ Bxd7 33. Qxd6 Bxd6 34. Nb5 Bb4 35. Rc1 Bd2 36. Rd1 Bxb5 37. Nxf7 Bc6 38. Bd4 a4 39. Bxb6 Rc2 40. Ne5 Kb7 41. Rb1 Rc1+ 42. Rxc1 Bxc1 43. Bd4 a3 44. Nd3 Bd2 45. Kf1 Bf3 46. Nc5+ Kc6 47. Nb3 Bb4 48. Nc1 Bd1 49. Na2 Bd2 50. Nc3 Bb3 (50... Bf3 $1 $19 {aiming for ...Bc1.} 51. Nd5 g5) 51. Ke2 $15 Bc1 (51... Bxc3 $15 52. Bxc3 Kc5) 52. Kd3 $11 Bb2 53. Nb5 Ba4 54. Nc3 Bb3 55. Ne2 Ba2 (55... Bd1 $5 56. Nc3 Kd7 $11) 56. Kc2 (56. Nc3 Bb1+ $1 {[%mdl 512]} 57. Ke3 (57. Nxb1 $2 a2 $19) 57... a2 58. Nxa2 Bxd4+ 59. Kxd4 Bxa2 $17) 56... Bxd4 ({Don't play} 56... Bxc4 57. Bxb2 Bxe2 58. Bxa3 $14) 57. Nxd4+ Kc5 58. Ne6+ Kxc4 59. Nf8 Bb3+ 60. Kb1 Kd4 61. Nxh7 Ke4 62. Ng5+ Kf5 63. Nf3 Bd5 64. Nd2 g5 65. h3 Ke5 66. Nf1 Bg2 67. Nh2 Bxh3 68. Nf3+ Kf5 69. Ka2 Bg2 70. Ne1 Bc6 71. Kxa3 Ke4 72. Kb2 Kd4 73. Kc2 Ke4 74. Kd2 Bb5 75. f3+ Kd4 76. Nc2+ Ke5 77. Ke3 Ba4 78. Nd4 Bd7 79. Nb3 Kd5 {[#]} (79... Bc6 $11) 80. Nd2 (80. g4 $1 $16 {Nd2 would kill now.} Ba4 81. Nd2) 80... Ke5 $11 81. Nc4+ Kf5 82. Nd6+ Ke5 83. Ne4 Kf5 $1 84. Nc5 Bc6 85. Nb3 Bd5 86. Nc5 Kf6 87. Ne4+ Kg6 88. Kd4 Bb3 89. Nc3 Kf5 90. Nd5 Ba4 91. g4+ Kg6 $1 92. Nc3 Bc2 93. Kc4 Kf6 94. Kd5 Bd3 95. Kd6 Bc4 96. Kc5 Bd3 97. Kd4 Bc2 98. Nd5+ Kg6 99. Ne3 Ba4 100. Kd5 Bb5 101. Nf5 Be2 102. Nd4 Bd1 103. Ke5 Ba4 $1 104. Ke6 Bd1 105. Nc6 Kg7 106. Ne5 Bc2 $1 107. Nc6 Bd1 108. Nd4 Kg6 109. Ke7 Kg7 110. Ke6 Kg6 111. Nc6 Kg7 112. Ne5 Bc2 $1 113. Nc4 Bb3 114. Kd5 Kf6 115. Kd4 Bd1 116. Nd2 Ba4 117. Ne4+ Kg6 118. Nxg5 Kxg5 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.01"]
[Round "8.3"]
[White "Santiago, Yago De Moura"]
[Black "Fiorito, Fabian"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2494"]
[BlackElo "2357"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,76,13,14,0,-12,-9,-1,-133,-125,-227,-197,-203,-81,-64,-67,-191,-180,-186,-190,-189,-188,-197,-191,-196,-194,-182,-192,-182,-185,-208,-200,-218,-208,-207,-208,-204,-215,-208,-152,-152,-152,-152,-152,-152,-152,-148,-130,-200,-200,-200,-200,-200,-199,-239,-235,-241,-241,-241,-241,-234,-219,-424,-424,-424,-362,-337,-308]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. cxd5 exd5 7. Qc2 {E48: Nimzo-Indian: Rubinstein: 5 Bd3 d5 including 6 Ne2, but excluding 6 a3.} c5 8. dxc5 Nc6 {[%cal Bb8c6,Bc6d4,Bd4b3][%mdl 32] aiming for ...d4.} 9. a3 (9. Nge2 $11 {keeps the balance.}) 9... d4 $1 $17 {[#]} (9... Bxc5 10. Nf3 $11) 10. exd4 $146 {[#]} (10. axb4 $17 Nxb4 11. Qe2 (11. Bxh7+ $2 Nxh7 12. Qd2 Bf5 $19) 11... dxc3 12. Bb1) ({Predecessor:} 10. Bc4 Qa5 11. Rb1 dxc3 12. axb4 Nxb4 13. Qxc3 Ne4 14. Qb3 Nd3+ 15. Ke2 Nxc1+ 16. Rxc1 Qd2+ 17. Kf3 Ng5+ 18. Kf4 Ne6+ {0-1 (18) Kristinsdottir,A-Fischdick,G (2180) Oslo 1983}) 10... Nxd4 $1 $19 11. Qd1 {[#]} Bxc3+ ({Weaker is} 11... Bxc5 12. Nge2 $17) (11... Qd5 $1 $19 {[%cal Rd5g2] and Black stays clearly on top.} 12. Kf1 (12. axb4 $2 Qxg2 13. Be3 Bg4 $19) 12... Bxc3 13. bxc3 Nb3) 12. bxc3 $17 Nb3 {&Nero is more active.} 13. Rb1 {This costs White the game.} ({White has to play} 13. Bxh7+ $1 $15 Nxh7 14. Qxb3) 13... Nxc5 $19 {Pair of Knights!} ({And not} 13... Nxc1 14. Rxc1 Qd5 15. Nf3 $17) 14. Bc2 Qxd1+ 15. Kxd1 Nce4 16. Bxe4 Nxe4 17. Ke1 Nxc3 18. Rb3 Re8+ 19. Be3 Nd5 20. Ne2 b6 21. Kd2 Bb7 22. Rg1 Rad8 23. Rd3 Ba6 24. Rd4 Nxe3 25. fxe3 Bxe2 26. Rxd8 Rxd8+ 27. Kxe2 {[%mdl 4096] Endgame KR-KR} Rd5 28. Rc1 {Intending Rc8+ and mate.} g6 {[%cal Bg7g6,Bg6g5][%mdl 32]} 29. Kf3 (29. Rc4 $17 {was necessary.}) 29... Ra5 30. Rc3 h5 31. Kf4 Kg7 32. e4 g5+ 33. Ke3 Ra4 34. Rd3 Kf6 35. g3 Ke6 {Against Rd6+} 36. h4 $2 (36. Kf3 {was called for.}) 36... gxh4 37. gxh4 f5 {[%cal Bf7f5,Bf5e4][%mdl 32]} 38. Kf4 fxe4 {Weighted Error Value: White=0.29 (precise) /Black=0.07 (flawless)} ({Avoid the trap} 38... Rxe4+ $2 39. Kg5 $19) 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.01"]
[Round "8.4"]
[White "Romero Barreto, Jaime Jose"]
[Black "Roselli Mailhe, Bernardo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2333"]
[BlackElo "2426"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,28,39,15,29,18,20,19,20,22,25,24,22,5,20,3,46,44,40,47,50,40,43,43,48,39,43,23,47,31,27,7,24,0,0,0,0,0,0,0,70,-21,-21,-31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 c5 5. dxc5 Bxc5 6. Bd3 Nc6 {[%cal Bb8c6,Bc6b4,Bb4d3][%mdl 32]} 7. Qe2 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5.} Nb4 {[#]} 8. exd5 $146 (8. Nb3 {keeps more tension.} Bd6 9. exd5 Nxd3+ 10. Qxd3 exd5 11. O-O) ({Predecessor:} 8. O-O Ne7 9. Nb3 Nxd3 10. cxd3 Bb6 11. Be3 O-O 12. Rac1 Bd7 13. Nc5 Bxc5 14. Bxc5 dxe4 15. Qxe4 {0-1 (42) Amonatov,F (2637)-Shipov,S (2557) ICC INT 2010}) 8... Nxd3+ 9. Qxd3 Qxd5 10. Qxd5 exd5 11. Nb3 Bd6 12. Bg5 f6 13. Bh4 Bg4 14. Bg3 Bxg3 15. hxg3 Bxf3 16. gxf3 Ne7 17. O-O-O Rc8 18. Nd4 Kf7 19. Ne2 Rcd8 20. c3 h5 21. Nf4 g6 22. Rd4 Nc6 23. Rxd5 Rxd5 24. Nxd5 $11 {[%mdl 4096] Endgame KRN-KRN} Ne5 25. f4 Ng4 (25... Nd3+ $11 26. Kd2 Nxb2) 26. Kc2 ({White should try} 26. Re1 $14) 26... Nxf2 27. Re1 {[#] Hoping for Re7+.} Rd8 28. c4 {Re7+ is the strong threat. The position is equal.} Rd7 {Prevents Re7+.} 29. Re2 Ng4 30. b4 Nh6 {[#] And now ...Nf5 would win.} 31. Kc3 Nf5 32. Rg2 g5 33. fxg5 fxg5 34. g4 hxg4 35. Rxg4 Kg6 36. Nf4+ Kf6 $1 37. Nd5+ Kg6 38. Nf4+ Kf6 $1 39. Nd5+ Kg6 {Weighted Error Value: White=0.10 (very precise) /Black=0.07 (flawless)} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.01"]
[Round "8.5"]
[White "Labollita, Martin"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2388"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,30,0,-17,0,-2,0,0,8,-13,0,0,-3,-195,-195,-333,-340]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. c3 h6 6. Bh4 d6 7. e4 c5 $1 {7...c5 is better than 7...Nbd7.} 8. dxc5 dxc5 9. Be2 Nc6 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} 10. O-O Nh5 {[%cal Bf6h5,Bh5f4,Bf4e2][%mdl 32]} 11. Qc2 Nf4 {The position is equal.} 12. Bb5 {[#]} Na5 $146 ({Predecessor:} 12... Bd7 13. a4 a6 14. Bc4 b5 15. Bd5 g5 16. Bg3 Ne2+ 17. Kh1 Nxg3+ 18. hxg3 e6 19. Bxc6 Bxc6 {½-½ (37) Gausel,E (2460)-Kovalev,A (2500) Gausdal 1990}) 13. Rfd1 Qc7 14. Rac1 $2 {[#]} (14. Bf1 $11) 14... c4 $1 $19 {Threatens to win with ...a6.} 15. Bg3 (15. Qb1 {was worth a try.}) 15... Ne2+ {White did not feel at home in the position after the opening.  Weighted Error Value: White=0.66/Black=0.05 (flawless)} 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.02"]
[Round "9.1"]
[White "Pichot, Alan"]
[Black "Diaz Hollemaert, Nahuel"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2625"]
[BlackElo "2439"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,73,28,16,15,14,15,15,18,20,19,13,51,25,50,-4,0,0,94,77,72,85,96,99,118,109,127,125,134,132,175,177,173,180,173,166,175,176,193,195,193,174,170,162,204,204,204,204,204,204,337,347,393,346,29995,29996,29996,29995,29997,29998]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 {[%cal Bf1b5,Bb5a4,Ba4b3][%mdl 32]} a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 {[%cal Bc2c3,Bc3d4,Bd4e5][%mdl 32]} O-O 9. a4 Na5 {C90: Closed Ruy Lopez with 7...d6: Early deviations.} 10. Bc2 {Threatens to win with axb5.} b4 {[%cal Ob4b3]} 11. d4 exd4 {The position is equal.} 12. cxd4 c5 13. Nbd2 {[#]} Rb8 $146 ({Predecessor:} 13... Bg4 14. h3 Bh5 15. b3 cxd4 16. g4 Bg6 17. Nxd4 d5 18. e5 Ne4 19. Nxe4 dxe4 {1-0 (33) Ghinda,M (2455)-Ibragimov,I (2550) Athens 1993}) 14. b3 {Against c4} Nd7 15. e5 (15. Rb1 $14) 15... dxe5 $11 16. dxe5 c4 (16... Nb6 $11) 17. Nxc4 $16 {White now steadily converts the win.} Nxc4 18. Qd3 {[%csl Gc2][%cal Rd3h7]} ({Don't play} 18. bxc4 Nc5 19. Nd4 b3 $15) 18... g6 {...Na3 is the strong threat.} 19. Qxc4 Nc5 20. Nd4 $36 {[%mdl 2048] White has strong initiative.} Bb7 21. Bh6 Bd5 22. Qe2 {0x0.0028da77436cdp-1022s more active pieces.} Bxg2 23. Bxf8 Bxf8 24. Kxg2 Qxd4 {[#]} 25. Rad1 $1 Qc3 {[#]} 26. Qd2 $1 Ne6 27. Qxc3 bxc3 28. Re3 Rc8 29. Re4 a5 30. f4 Bb4 31. Kf3 Rc7 32. Rc4 Re7 (32... Rxc4 $142 33. bxc4 Bc5) 33. f5 $18 gxf5 34. Bxf5 Nc5 $2 (34... Nf8 $18 35. Ke4 Kg7) 35. Rd8+ {White mates.} Kg7 36. Rg4+ Kh6 37. Rdg8 {Weighted Error Value: White=0.07 (flawless) /Black=0.50} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.02"]
[Round "9.2"]
[White "Roselli Mailhe, Bernardo"]
[Black "Labollita, Martin"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2426"]
[BlackElo "2388"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,25,27,18,28,15,24,0,0,0,7,0,0,0,0,-14,0,0,0,0,0,0,4,-3,0,4,21,15,15,6,10,18,12,10,16,16,17,6,17,12,20,14,16,18,21,0,12,6,11,20,22,27,22,16,83,73,79,82,122,106,105,123,190,131,355,351,345,122,145,133,494,131,131,131,1864,1761,29990,29991,29998,29999]} 1. d4 d5 2. c4 e6 3. Nc3 a6 4. cxd5 exd5 5. Nf3 c6 6. e4 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} dxe4 7. Ng5 {[%cal Og5f7]} Be7 8. Ngxe4 {White has an edge.} (8. Bc4 $5 {[%cal Rg5f7]} Nh6 9. Ngxe4 $14 (9. Ncxe4 Nd7 $14)) 8... Nf6 9. Bc4 O-O 10. O-O Nbd7 {[#]} 11. Re1 $146 ({Predecessor:} 11. Ng3 Nb6 12. Bb3 Nfd5 13. Nce4 Be6 14. Re1 Nd7 15. a3 Re8 16. Qd3 Bf8 17. Bd2 {1-0 (47) Zubov,A (2589)-Warmerdam,M (2506) Chess.com INT 2020}) 11... Nxe4 12. Rxe4 Nb6 13. Bb3 $1 Bf5 14. Re1 Bf6 15. Be3 Qd7 16. Qf3 Rad8 17. h3 Nd5 18. Nxd5 cxd5 19. Qg3 Be4 20. Bg5 Bxg5 21. Qxg5 h6 22. Qd2 Rfe8 23. Rac1 Qd6 24. Re3 Bf5 25. Rce1 Rxe3 26. Qxe3 Kf8 27. Qe5 Be4 28. Qh5 {[%cal Oe1e4]} Qf4 29. Qe2 {[#] Strongly threatening f3.} Kg8 30. f3 Bg6 31. Qe3 (31. Qe5 {looks sharper.} Qd2 32. Re2 Qc1+ 33. Kf2) 31... Qc7 (31... Qh4 $11) 32. Rc1 $16 Qb6 33. Rc5 Rd6 34. Qc3 Kh7 35. Rxd5 ({Reject} 35. Bxd5 $6 Qd8 36. Bb3 (36. Bxb7 Rxd4 37. Be4 Bxe4 $11) 36... Rxd4 $11) 35... Re6 (35... Qd8 $16) 36. f4 ({Better is} 36. Qc5 $18) 36... Re4 $2 (36... Rf6 $16) 37. f5 $18 Bh5 38. Qc5 $2 (38. g4 Bxg4 39. hxg4 Rxg4+ 40. Kf1 Qf6 $18) (38. Bc2 $18 Rf4 39. Qe3) 38... Qf6 {[#] ...Re1+ is the strong threat.} 39. Re5 $1 Bf3 {[%mdl 8192]} (39... Qh4 $16) 40. Rxe4 $2 (40. gxf3 $18 Qh4 41. Kg2 (41. fxe4 Qe1+ 42. Kh2 Qe2+ 43. Kg1 Qe1+ 44. Kh2 Qe2+ 45. Kh1 Qf1+ 46. Kh2 Qf2+ 47. Kh1 Qf1+ 48. Kh2 Qf2+ 49. Kh1 Qf1+ $11) (41. Bxf7 {leads to mate.} Qg3+ 42. Kf1 Qxf3+ 43. Kg1 Qg3+ 44. Kf1 Qxh3+ 45. Kf2 Qe3+ 46. Kf1 Rf4+ 47. Kg2 Qf2+ 48. Kh3 Rh4#) 41... Rxd4 42. Qc1) 40... Bxe4 $16 41. Qe5 $36 {[%mdl 2048] White has strong initiative.} Qc6 {[%mdl 8192]} (41... Qxf5 $16 42. Bxf7 Qxf7 43. Qxe4+ Kg8) 42. Bxf7 $18 Bxg2 43. Bg6+ Kg8 44. Qb8+ {Weighted Error Value: White=0.23 (precise) /Black=0.45} 1-0

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.02"]
[Round "9.3"]
[White "Fiorito, Fabian"]
[Black "Romero Barreto, Jaime Jose"]
[Result "1/2-1/2"]
[ECO "E53"]
[WhiteElo "2357"]
[BlackElo "2333"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,17,37,36]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 dxc4 7. Bxc4 c5 8. O-O Bxc3 9. bxc3 {[#]} {Predecessor:} b6 $146 {E53: Nimzo-Indian: Rubinstein: Main Line (4...0-0 5 Nf3 d5 6 Bd3 c5 7 0-0).} 10. Qe2 Bb7 11. Rd1 Qc7 12. Bd3 Be4 13. Bb2 Nbd7 14. Nd2 Bxd3 15. Qxd3 Rfd8 16. e4 Rac8 17. Rac1 {0-1 (48) Jacobson,B (2491)-Tsydypov,Z (2552) Lichess.org INT 2021} 1/2-1/2

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.02"]
[Round "9.4"]
[White "Tokman, Ariel"]
[Black "Santiago, Yago De Moura"]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2315"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,54,7,45,0,0,-14,28,27,33,19,41,33,31,40,38,0,21,16,23,3,20,11,24,11,16,-45,-12,-63,-30,-110,-111,-169,-162,-314,-314,-316,-303,-711,-688]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Nb6 8. Nc3 Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4,Bc4d6][%mdl 32]} 9. e3 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 10. h3 {D76: Fianchetto Grünfeld: Main Line with 7...Nb6.} a4 11. Rb1 {[#]} e5 $146 {[%cal Re5d4]} ({Predecessor:} 11... Bf5 12. e4 Bd7 13. d5 Na5 14. Be3 Nac4 15. Bd4 e5 16. Bc5 Re8 17. b3 axb3 18. axb3 {1-0 (48) Rustemov,A (2525)-Migot,T (2353) Chess.com INT 2021}) 12. d5 {White has an edge.} Na5 13. e4 Nac4 14. b3 axb3 15. axb3 Nd6 16. Bb2 Re8 17. Re1 Bd7 18. Qd3 Qe7 19. Nd2 Rf8 20. Ra1 f5 {[%cal Bf7f5,Bf5f4,Bf4f3][%mdl 32]} 21. f3 ({White should play} 21. Qc2 $11) 21... h5 22. Kh2 (22. Rec1 $11) 22... Rxa1 23. Bxa1 (23. Rxa1 $11 {keeps the balance.} Qg5 24. Nf1 (24. h4 Qf6 $17)) 23... f4 $17 24. g4 (24. gxf4 $17 Qh4 25. Rd1) 24... Qh4 $19 {[%csl LRe1,LRg4]} 25. Rc1 $2 (25. Rg1 {might work better.}) 25... hxg4 26. fxg4 Bxg4 {[%cal Of4f3] [#] Threatens to win with ...f3!} 27. Ne2 $2 (27. Nf3 Qg3+ 28. Kh1 Bxh3 29. Rc2) 27... f3 {Weighted Error Value: White=0.59/Black=0.15 (very precise)} ({Not} 27... Bxe2 28. Qxe2 f3 29. Bxf3 $17) 0-1

[Event "Magistral 50 Blanca 2022"]
[Site "Buenos Aires"]
[Date "2022.04.02"]
[Round "9.5"]
[White "Paveto, Kevin"]
[Black "Flores, Diego"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2462"]
[BlackElo "2566"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2022.03.25"]
[EventType "tourn"]
[EventCountry "ARG"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,71,29,29,25,22,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,-25,-12,-62,-1,-17,0,0,0,0,0,-10,0,0,12,24,94,90,95,101,135,131,168,169,243,131,486,443,487,452,721,722,720,712,687,670,734,732,724,697,29954,5631,4802,3253]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bc5 7. Nd6+ {B45: Sicilian Four Knights.} Ke7 $1 8. Nxc8+ Rxc8 9. Bd3 {The position is equal.} (9. Bg5 $2 Qb6 10. Qd2 Bxf2+ $1 {[%mdl 512]} 11. Qxf2 Qxb2 $19) 9... Qc7 10. O-O h5 11. Bg5 Kf8 {Strongly threatening ...Ng4.} 12. Bxf6 gxf6 13. Kh1 a6 14. f4 {[#]} h4 $146 ({Predecessor:} 14... Bd4 15. Qe1 b5 16. Rb1 h4 17. Ne2 Ba7 18. Rd1 Ne7 19. a4 Rb8 20. Ra1 Bb6 21. axb5 axb5 22. Bxb5 Qxc2 23. Bxd7 Qxe4 24. h3 Nf5 25. Rf3 Qxe2 26. Qxe2 {1-0 (26) Nitin,S (2427)-Maltsevskaya,A (2410) Chess.com INT 2022}) 15. a3 Bd4 16. Qe1 (16. Qd2 $11) 16... h3 (16... Ne7 $15) 17. g3 $11 Ne7 {[%cal Rd4c3]} 18. Nd1 Qc6 19. c3 Ba7 20. Ne3 Qb6 21. Nc4 Rxc4 22. Bxc4 f5 (22... Qxb2 23. Be2 $16) (22... d5 $2 23. exd5 exd5 24. Be2 $18) (22... Nf5 $1 $11 {keeps the balance.}) 23. Bd3 $1 $16 Qxb2 {[%csl Gh3][%cal Rb2g2] [#]} 24. Be2 $1 fxe4 25. Rb1 Qxa3 26. Rxb7 Qc5 (26... Be3 $142 27. Rxd7 Qb2) 27. g4 (27. Bxa6 Nf5 $11) (27. Rxd7 $6 Bb6) (27. Qd1 $18 d5 28. Bg4) 27... Nd5 $2 {[%mdl 8192] [#] Black cannot hold the game after this.} (27... Bb6 $16 {is tougher.}) 28. f5 $1 $18 {[%cal Bf4f5,Bf5f6][%mdl 32] Threatens to win with fxe6.} Ke7 29. c4 Ne3 (29... Nc7 $142 30. Qc3 Rd8 31. Qxh3 (31. fxe6 Nxe6 32. Qxh3 Rb8 $18) 31... Rf8 32. f6+ Kd6 33. Qg3+ e5) 30. f6+ ({Weaker is} 30. Qd2 Nxf1 31. Qxd7+ Kf6 32. Rxa7 (32. Qxf7+ $2 Kg5 $19) 32... Qf2 33. Qe7+ (33. Qxf7+ {gets mated.} Kg5 34. Qg7+ Kf4 35. Qc7+ e5) 33... Ke5 34. Qc7+ Kf6 35. Qe7+ (35. Qxf7+ Kg5 36. Qg7+ Kf4 37. Qc7+ e5) 35... Ke5 36. Qc7+ Kf6 37. Qe7+ $11 (37. Qxf7+ Kg5 38. Qg7+ Kf4 39. Qc7+ e5)) 30... Kd6 31. Qg3+ e5 32. Ra1 Kc6 {[#]} 33. Rxa7 {[%mdl 576] Deflection} Qxa7 34. Qxe5 {[%cal Oc4c5] Intending c5! and mate.} Rb8 35. c5 {[%mdl 64] Threatening mate with Qd6+. Deflection} Qxc5 36. Qxb8 {Weighted Error Value: White=0.09 (flawless) /Black=0.60} 1-0

