[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.1"]
[White "Adly, Ahmed"]
[Black "Alberto, Manuel"]
[Result "1-0"]
[WhiteElo "2615"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 12,70,4,8,18,6,42,37,56,48,48,22,22,-18,10,-30,-15,-29,-25,-60,-50,-35,-55,-84,-68,-74,-78,-127,-115,-106,-127,-118,-65,-64,0,0,141,137,141,125,116,125,140,132,125,118,120,116,256,229,276,212,358,377,823,816,29996,29997,29998,29999,29999]} 1. Nf3 c6 2. g3 d5 3. Bg2 Nf6 4. O-O e6 5. d3 Be7 6. Nbd2 O-O 7. e4 c5 {A07: Réti Opening: New York and Capablanca Systems.} 8. Re1 dxe4 9. dxe4 Nc6 {White is slightly better.} 10. e5 Nd5 11. a3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32] [#]} 12. h4 $146 ({Predecessor:} 12. Nf1 Bb7 13. h4 Qc7 14. Qe2 c4 15. N1h2 Rfe8 16. h5 f5 17. exf6 Bxf6 18. c3 {½-½ (29) Sibl,V (1895)-Slangal,L (1890) Klatovy 2001}) 12... a5 13. h5 h6 $1 14. a4 b4 15. Qe2 Ba6 16. Qe4 Rc8 17. Qg4 Kh8 18. Nb3 c4 19. Nbd4 Nxd4 20. Nxd4 Bc5 21. Rd1 Qb6 (21... Qd7 $17 22. Kh2 c3) 22. Bxd5 $15 {Hoping for Bg2.} exd5 (22... Rfd8 $1 $15 23. Bxh6 gxh6) 23. Be3 $40 {[%mdl 128] White has some attack.} Rce8 (23... Bxd4 $11 24. Qxd4 Qxd4 25. Bxd4 Rc6) 24. Nf5 $1 $16 {[%csl Gf5,LRd5,LRg7][%cal Rg4g7]} Rg8 25. Rxd5 Bxe3 26. Nxe3 Bb7 {[#]} 27. Rd6 {[%cal Rd6b6]} ({But not} 27. Nxc4 $6 Qc6 $14) (27. Qxc4 $6 Bxd5 28. Qxd5 Rd8 $11) 27... Qc5 28. Qf4 {Threatening mate with Rxh6+!} ({Much weaker is} 28. Qxc4 $6 Qxe5 29. Rad1 Qxh5 $11) 28... Re6 29. Nxc4 Rge8 {Loses the game.} (29... Ba6 $16) 30. Rad1 $18 {[%cal Ba1d1,Bd1d4,Bd4d8][%mdl 32]} ({Much less strong is} 30. Qxf7 $6 R6e7 $16) 30... R6e7 31. R1d4 f6 {[#]} (31... Kg8 $142 32. Qe3 Qc8) 32. Rxf6 $1 {[%mdl 512] Rf8+ would kill now.} Rxe5 $2 (32... Kg8) 33. Nxe5 Rxe5 34. Rd8+ {White mates.} Kh7 {[#]} 35. Qxh6+ $3 {[%mdl 512]} gxh6 36. Rf7# {Weighted Error Value: White=0.11/Black=0.46} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.2"]
[White "Hemam, Moulaye Brahim"]
[Black "Amin, Bassem"]
[Result "0-1"]
[WhiteElo "2046"]
[BlackElo "2693"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 11,88,11,15,-7,-9,-9,-13,-13,-7,-13,-8,-15,-15,-20,-19,-28,-23,-25,12,-8,10,7,10,10,18,0,5,0,13,-5,0,0,0,0,0,-50,-39,-39,-41,-43,-28,-32,-37,-43,-33,-28,-37,-36,-38,-23,22,20,19,20,19,19,19,19,19,20,82,75,71,0,0,0,0,0,0,-204,-207,-144,-16,-314,-296,-1464,-1014,-652,-646]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. Nc3 d6 6. h3 Na5 7. Bb5+ {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} c6 8. Ba4 b5 9. Bb3 {The position is equal.} Be7 10. O-O O-O {[#]} 11. Bd2 $146 ({Predecessor:} 11. Qe2 Bd7 12. Nd1 a6 13. Bd2 Nxb3 14. axb3 Re8 15. Re1 Bf8 16. Nh2 d5 17. Qf3 {0-1 (38) Zavoronkov,V (2385)-Zjukin,S (2401) Kilingi Nomme 2002}) 11... Re8 12. Re1 Bf8 13. Ne2 Nxb3 14. axb3 c5 15. Ng3 g6 16. b4 Bb7 17. bxc5 dxc5 18. Bc3 Qc7 19. b3 a5 20. Ra2 Nd7 21. Qa1 {[%cal Rc3a5]} b4 22. Bb2 Bc6 23. Nd2 Nb6 $1 24. Ngf1 ({Wrong is} 24. Rxa5 $2 Rxa5 25. Qxa5 Ra8 $19) 24... a4 25. bxa4 Nxa4 26. Nc4 {[%cal Rb2e5]} f6 27. f4 Nxb2 28. Rxa8 Bxa8 29. Qxb2 exf4 30. Qxf6 Qf7 (30... Kh7 {looks sharper.} 31. Nfd2 Bg7 32. Qb6 Qxb6 33. Nxb6 Bc3) 31. Qxf7+ Kxf7 32. Ra1 Bc6 33. Ra6 Bb5 34. Ra7+ Kg8 {[#] Strongly threatening ...Bxc4.} 35. Nfd2 b3 (35... g5 $11 {keeps the balance.}) 36. cxb3 $16 Rd8 37. Ne5 (37. e5 $16) 37... Bxd3 $11 {aiming for ...c4!} 38. Nxg6 c4 39. Nxf8 {[#] And now Ne6 would win.} c3 40. Nf3 (40. Nd7 $11 cxd2 41. Nf6+ Kf8 42. Nh7+ Kg8 43. Nf6+ Kf8 44. Nh7+ Kg8 45. Nf6+) 40... c2 $19 41. Rc7 {Threatens to win with Ne6.} Bxe4 (41... Kxf8 $17 42. Ne1 Bxe4 43. Nxc2 Rd1+ 44. Kh2 Rd2) 42. Ne1 $2 {[%mdl 8192]} Rd1 ({Don't do} 42... Kxf8 43. Nxc2 Rd1+ 44. Kh2 $19) 43. Kf2 (43. Nd7 Rxd7 44. Rc8+ Kf7 45. Nxc2 Rd1+ 46. Kh2) 43... Kxf8 44. Nxc2 Rd2+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.42/Black=0.13} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.3"]
[White "Haddouche, Mohamed"]
[Black "Gohil, Mehul"]
[Result "0-1"]
[WhiteElo "2483"]
[BlackElo "1991"]
[PlyCount "0"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]

{Black stopped clock for 16 seconds. Clock started by Arbiter. Black stopped clock for 135 seconds. Arbiter stopped clock for 10 seconds. #T}  0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.4"]
[White "Ndegwa, Jackson Kamau"]
[Black "Ortega Amarelle, Mariano"]
[Result "0-1"]
[WhiteElo "2001"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 13,72,0,6,-3,21,13,22,3,35,0,0,0,0,0,0,0,0,0,0,0,20,-4,-10,-21,0,-2,-8,-38,0,-31,-13,-31,-31,-123,-127,-241,-171,-251,-138,-386,-198,-198,-192,-207,-215,-249,-159,-274,-278,-328,-276,-280,-267,-354,-364,-518,-503,-1997,-4866,-4786,-3018]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. Bd3 e6 8. O-O {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack.} d5 9. Re1 Be7 10. Bg5 {[#] The position is equal.} h6 $146 ({Predecessor:} 10... O-O 11. exd5 cxd5 12. Bxf6 Bxf6 13. Qf3 Rb8 14. Rab1 Bb7 15. Qh5 g6 16. Qh6 Bg7 {0-1 (46) Evengroen,B (1336)-Minderman,C (1524) Twente 2007}) 11. Bh4 Nxe4 12. Bxe7 Nxc3 13. Qg4 ({Don't play} 13. Bxd8 Nxd1 14. Bf6 gxf6 $17) 13... Kxe7 ({Reject} 13... Qxe7 $6 14. Qxg7 Qf8 15. Qxc3 $16) 14. bxc3 Kf8 15. c4 h5 16. Qf4 Rh6 17. Re3 Kg8 18. Rae1 Bd7 19. Rg3 {And now Qxh6 would win.} Qf6 20. Qc7 Be8 (20... h4 $5 {[%cal Rh4g3]} 21. Rf3 Qd8 $15) 21. cxd5 cxd5 22. Qb7 Qd8 23. Rb1 {[#]} (23. h3 $15) 23... e5 $1 $17 24. c4 (24. h4 $17 {was called for.}) 24... Bc6 25. Qa6 (25. Qb2 $142 d4 26. Qd2) 25... d4 (25... e4 $19 26. Bf1 d4) 26. Be4 {[#] This costs White the game.} (26. Rg6 $17 {only move.} Rxg6 27. Bxg6) 26... Qc8 (26... h4 $142 $1 27. Rg4 Qd7 28. Bxc6 Qxg4) 27. Qxc8+ $19 Rxc8 28. Bf5 Re8 29. h4 Rf6 30. Bd3 (30. Bc2 $17) 30... e4 31. Bf1 Rf5 32. Ra3 a5 33. Rb6 Rc5 34. Ra6 (34. Be2 $142) 34... d3 {[%cal Bd4d3,Bd3d2][%mdl 32] Black is clearly winning.} 35. f3 (35. Rb3 $142) 35... d2 36. Be2 exf3 {Weighted Error Value: White=0.73/Black=0.22} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.5"]
[White "Bellahcene, Bilel"]
[Black "Fernandes, Avelino"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "1887"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 9,91,64,63,72,129,121,214,222,250,251,356,338,342,348,442,446,407,417,874,668,1038,992,1041,984,1907,723,634,427,433,430,408,413,448,333,335,294,303,303,294,288,291,289,296,300,289,298,316,279,283,270,300,294,444,426,474,463,505,406,408,339,476,476,476,476,595,587,614,617,617,610,610,603,603,603,810,791,801,787,802,766,1125,1029,954,927]} 1. e4 g6 2. d4 Bg7 3. Nf3 e6 4. Nc3 Ne7 5. Be3 d5 6. Qd2 {B06: Modern Defence.} c6 (6... dxe4 $142 7. Nxe4 h6) 7. Bh6 $16 {[#]} Kf8 $146 {[#]} (7... Bxh6 $16 8. Qxh6 dxe4 9. Nxe4 Nf5) ({Predecessor:} 7... Bxh6 8. Qxh6 dxe4 9. Nxe4 Nf5 10. Qf4 h5 11. O-O-O Nd7 12. c4 Qa5 13. Kb1 O-O 14. Ne5 Rd8 15. Be2 Kg7 16. h3 Nxe5 17. dxe5 Rf8 18. g4 Nh6 19. Qf6+ {1-0 (19) Huber-Gros,P Metz 1995}) 8. h4 $1 $18 {White is clearly better.} dxe4 9. Nxe4 Nf5 (9... f5 $142) 10. Bxg7+ Kxg7 11. h5 Nd7 12. g4 Ne7 13. O-O-O f5 (13... Nd5 $142 14. c4 N5f6) 14. gxf5 exf5 {[#]} 15. Nfg5 Nb6 16. h6+ Kf8 {[#]} 17. Nf6 (17. d5 $142 $1 fxe4 (17... Nexd5 18. Qd4) 18. Qd4) 17... Ned5 18. Ngxh7+ Kf7 19. Nxd5 Rxh7 20. Nf4 {[%cal Bd5f4,Bf4h3,Bh3g5][%mdl 32]} Qf6 21. Nh3 Be6 22. Ng5+ Kg8 23. Nxh7 Kxh7 24. a3 Rd8 25. Qe3 Bd5 26. Rg1 Rd7 27. Qe5 Qe6 28. Qxe6 Bxe6 29. Re1 Bd5 30. Bd3 Kxh6 (30... Bf7 {is a better defense.} 31. c3 Nd5) 31. Re3 Rf7 32. b3 Rf6 33. Re7 Rf7 34. Rge1 Kg7 (34... Nc8 {might work better.}) 35. c4 {White is clearly winning.} Bf3 36. R1e3 Bh5 37. f4 Nc8 38. Rxf7+ Kxf7 {[%mdl 4096] Endgame KRB-KBN} 39. c5 Ne7 40. Bc4+ Kf8 41. b4 a6 42. Kd2 Bg4 43. Ke1 Bh5 44. Kf2 Ke8 45. d5 {White threatens d6 and mate.} cxd5 46. Bxd5 {Black got outplayed after the opening.  Weighted Error Value: White=0.24/Black=0.39} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.6"]
[White "Mosutha, Thuso"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "0-1"]
[WhiteElo "2036"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 9,102,-14,34,35,35,29,37,31,43,42,56,26,22,22,16,7,33,7,8,7,7,14,20,3,0,-25,-11,-12,6,0,7,2,5,-32,-42,-52,-41,-284,-277,-273,-249,-241,-62,-62,-66,-66,-62,-62,-66,-86,-86,-229,-60,-100,0,-104,-97,-104,-101,-102,-100,-102,-26,-26,-25,-25,-18,-122,-117,-177,-72,-88,-43,-698,-699,-687,-686,-686,-656,-856,-851,-774,-288,-559,-537,-2633,-1842,-29984,-29985,-29985,-29986,-29987,-29986,-29986,-29986]} 1. c4 e5 2. g3 c6 3. d4 e4 4. Nc3 Bb4 {[#]} 5. Qc2 $146 ({Predecessor:} 5. Qb3 Bxc3+ 6. Qxc3 d5 7. b3 a5 8. Bg2 Nf6 9. Ba3 Na6 10. Nh3 b5 11. cxb5 cxb5 {0-1 (43) Bocharov,D (2524)-Grischuk,A (2777) chess.com INT 2020}) 5... f5 6. Nh3 {A20: English Opening: 1...e5.} Nf6 7. Bg5 h6 8. Bxf6 {White is slightly better.} Qxf6 9. e3 d6 10. a3 Bxc3+ 11. Qxc3 Be6 12. Nf4 Bf7 13. h4 g5 14. hxg5 hxg5 15. Rxh8+ Qxh8 16. Nh3 {Threatens to win with Qb4.} Qf6 17. O-O-O Nd7 {[%cal Bb8d7,Bd7b6,Bb6d5,Bd5e3][%mdl 32]} 18. Qa5 Nb6 19. c5 dxc5 20. dxc5 Nd5 21. Ng1 f4 22. gxf4 gxf4 23. Bh3 $2 (23. Qa4 $15) 23... fxe3 $19 24. fxe3 Nxe3 25. Re1 Qxb2+ $2 26. Kxb2 $15 Nc4+ {[%mdl 64] Double Attack} 27. Kc3 {White wants to mate with Qc7.} Nxa5 28. Rxe4+ Kf8 $1 29. Rf4 Re8 30. Kb4 (30. Nf3 $17 Re3+ 31. Kd2) 30... b6 $2 (30... Nb3 $19 {And now ...Re3 would win.} 31. Bf1 a5+ 32. Kc3 Re3+ 33. Kb2 Nxc5) 31. Bg4 Re5 ({Better is} 31... Kg8 $1 $17 32. Bf5 Nb7 33. cxb6 axb6) 32. cxb6 (32. Nf3 $1 $11 {was the only way to keep the balance.} Re7 33. Nd4) 32... axb6 $17 33. Nf3 Rb5+ 34. Kc3 Rb3+ 35. Kc2 {[#] Ne5 is the strong threat.} Kg7 ({Worse is} 35... Rxa3 36. Ne5 $16 (36. Be6 Ke7 $16)) (35... Ke7 $1 $17 36. a4 Ra3) 36. Ne5 $11 Bd5 37. a4 Ra3 38. Kb2 (38. Nd7 $11 {remains equal.}) 38... Re3 $17 39. Nd7 {[#]} Nc4+ (39... Kh6 $1 $19 {and Black stays clearly on top. Strongly threatening ...Kg5.} 40. Rf2 Nc4+ 41. Kc1 Ra3) 40. Kc2 Ra3 41. Be2 $2 {[%mdl 8192]} (41. Nf6 $15) 41... Ra2+ $19 42. Kd3 Rd2+ 43. Kc3 Rxe2 44. Rxc4 Bxc4 45. Kxc4 {[%mdl 4096] Endgame KR-KN} Rb2 $2 (45... Re4+ 46. Kb3 c5) 46. Kc3 $2 (46. Ne5 Rc2+ 47. Kb3) 46... Rb1 47. Ne5 Kf6 48. Kc2 Kxe5 {Black mates.} 49. Kxb1 Kd4 50. Ka2 Kc4 51. Ka3 Kc3 {Weighted Error Value: White=0.82/Black=0.37} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.7"]
[White "Kayonde, Andrew"]
[Black "Strovsky, Mikhail"]
[Result "1-0"]
[WhiteElo "2393"]
[BlackElo "2164"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 21,53,54,126,120,121,104,107,90,117,121,363,355,1554,1537,1587,1019,986,995,1139,1139,1976,531,531,528,524,524,523,519,511,510,564,564,1260,1255]} 1. d4 d5 2. Nf3 e6 3. e3 Nf6 4. Bd3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. O-O Bd7 8. dxc5 Bxc5 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 O-O {[#]} (11... Qc7 $14) 12. Bxh7+ $1 $16 {[%mdl 512] D05: Colle System with ...e6.} Kxh7 {[#]} 13. Ng5+ $1 Kg6 {Strongly threatening ...e5.} ({But not} 13... Kg8 $2 14. Qh5 $18) 14. Qd3+ {White is better.} f5 {...Qc7 is the strong threat.} 15. Qg3 {[#] Threatens to win with Nxe6+.} f4 $146 (15... Qe7 $16) ({Predecessor:} 15... Qe7 16. Ne4+ Kf7 17. Bg5 Qe8 18. Nxc5 b6 19. Nxd7 Qxd7 20. Rad1 Qc8 21. Rd6 Ne7 22. Bxe7 Kxe7 {1-0 (31) Nguyen,H (1726)-Diep,T (1944) Ho Chi Minh City 2014}) 16. Bxf4 $18 {Hoping for Nxe6+.} Rxf4 $2 (16... Qe7 17. Ne4+ Kh7) 17. Nxe6+ $1 {[%mdl 64] Double Attack. White is clearly winning.} Kf5 18. Nxd8 Rxd8 19. Rad1 Ne5 20. Rd5 Bb6 21. Re1 (21. Qxg7 $142 {[%csl Gg7][%cal Rd5e5]} Re4 22. Qh7+ Kf6 23. Qxe4) 21... Bxf2+ 22. Qxf2 Rxf2 23. Rexe5+ Kf6 24. Kxf2 Rf8 25. Re3 Kg6+ 26. Rf3 Rd8 27. Kg3 {Black got outplayed after the opening.  Weighted Error Value: White=0.64/Black=0.38} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.8"]
[White "Sang, Ricky"]
[Black "Zaibi, Amir"]
[Result "0-1"]
[WhiteElo "1991"]
[BlackElo "2381"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 11,139,6,2,-6,0,-14,-10,-25,-28,-37,-16,-12,-10,-28,-17,-25,-22,-13,-9,-19,-12,-37,-20,-28,-24,-37,-15,-12,-12,-16,0,-12,-6,-27,-27,-40,-28,-20,0,11,12,0,0,-8,0,0,8,4,20,13,21,18,16,12,38,30,30,30,29,31,36,29,35,11,38,33,38,38,34,22,38,-38,52,55,67,45,65,50,59,0,126,104,108,81,149,0,0,0,0,0,0,0,0,-204,-183,-183,-183,-183,-183,-431,-345,-772,-723,-782,-778,-756,-681,-1115,-1119,-1047,-1035,-1024,-823,-787,-505,-1120,-1077,-5591,-5583,-4790,-1309,-4714,-2253,-29985,-29986,-29987,-29987,-29989,-29990,-29999]} 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 e6 6. Bd3 Bd6 7. Bg3 {D00: 1 d4 d5: Unusual lines.} e5 {[%cal Rc5d4]} 8. dxe5 Nxe5 9. Bc2 {The position is equal.} O-O 10. Ne2 Re8 {[#]} 11. O-O $146 ({Predecessor:} 11. h3 Bd7 12. a4 Bc6 13. O-O Qc7 14. Nf4 Ng6 15. Ne2 Rad8 16. Re1 Bxg3 17. Nxg3 {½-½ (33) Vatter,H (2265)-Schmidt,G (2210) Germany 1997}) 11... Bg4 12. Re1 Qb6 13. Qb1 Ng6 14. Bxd6 Qxd6 15. Ng3 Rad8 16. h3 Bc8 17. Nf3 b6 18. Ba4 Bd7 19. Bxd7 Qxd7 20. Qf5 Qa4 21. Red1 h6 22. Rd2 Ne4 23. Nxe4 ({Wrong is} 23. Rxd5 $2 Nxg3 24. Qd3 (24. fxg3 $2 Ne7 $19 {[%mdl 64] Double Attack}) 24... Rxd5 $19) 23... dxe4 24. b3 Qa5 25. Rxd8 Rxd8 26. Qxe4 Qxc3 27. Rb1 Kf8 28. Qa4 a5 29. Qc6 Qd3 30. Rc1 Qd6 31. Qxd6+ Rxd6 $11 {[%mdl 4096] Endgame KRN-KRN} 32. Kf1 Ne7 33. Ke2 Nd5 34. Ne5 Re6 35. Nc4 Ke7 36. g3 h5 37. h4 Nb4 38. a3 Nd5 39. Kf3 Nf6 40. Rd1 Ne4 41. Kg2 (41. a4 $14) 41... Nc3 (41... a4 $15 42. bxa4 Nc3) 42. Rd3 $14 Nb5 43. f3 g6 44. Kf2 Nc7 45. e4 (45. a4 $14) 45... f5 (45... Nb5 $11) 46. exf5 $16 gxf5 47. Ne3 (47. a4 {with more complications.} b5 48. Ne3 bxa4 49. bxa4 f4 50. gxf4 Rb6 51. Nf5+) 47... Kf6 (47... Rf6 $142) 48. Nd5+ (48. a4 $16) 48... Nxd5 $11 49. Rxd5 {KR-KR} Rc6 50. Ke3 Ke6 51. Rd3 b5 {[%cal Bb6b5,Bb5c4][%mdl 32]} 52. f4 $2 {White is now going downhill.} (52. Rd8 $11) 52... c4 53. bxc4 bxc4 54. Rd1 {[#]} a4 $1 55. Rc1 $2 (55. Rd2 {is the only way for White.}) 55... Kd5 $19 56. Rc2 $2 (56. Kd2) 56... Re6+ 57. Kd2 Kd4 58. Rc1 Rb6 59. Kc2 Rb3 {[#] ...Rc3+ is the strong threat.} 60. Rd1+ Rd3 61. Re1 Rxg3 62. Re5 Rg2+ 63. Kc1 (63. Kd1 $142 Kd3 64. Rd5+ Ke4 65. Re5+ Kxf4 66. Rc5) 63... Kd3 {( -> ...Rg1+)} 64. Re1 c3 65. Rd1+ Rd2 66. Rh1 Kc4 {Strongly threatening ...Kb3.} 67. Rh3 Kb3 {Black mates.} 68. Rf3 Rh2 69. Rf1 Ra2 {[%cal Ra2a1]} 70. Rd1 Ra1# {Weighted Error Value: White=0.37/Black=0.17} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.9"]
[White "Silva, David"]
[Black "Kamara, Ansumana"]
[Result "1-0"]
[WhiteElo "2258"]
[BlackElo "1899"]
[PlyCount "43"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:24:19"]
[BlackClock "0:18:55"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:08]} 2. Nf3 {[%emt 0:00:13]} d6 {[%emt 0:00:03]} 3. d4 {[%emt 0:00:10]} cxd4 {[%emt 0:00:04]} 4. Nxd4 {[%emt 0:00:03]} Nf6 {[%emt 0:00:05]} 5. Nc3 {[%emt 0:00:05]} a6 {[%emt 0:00:03]} 6. a3 {[%emt 0:00:04]} e5 {[%emt 0:00:09]} 7. Nf5 {[%emt 0:00:04]} d5 {[%emt 0:00:12]} 8. Bg5 {[%emt 0:00:10]} Bxf5 {[%emt 0:00:57]} 9. Bxf6 {[%emt 0:00:43]} gxf6 {[%emt 0:00:13]} 10. exf5 {[%emt 0:00:06]} d4 {[%emt 0:00:04]} 11. Ne4 {[%emt 0:00:05]} Be7 {[%emt 0:00:16]} 12. Qh5 {[%emt 0:00:54]} Qd5 {[%emt 0:00:47]} 13. Nd2 {[%emt 0:00:26]} b5 {[%emt 0:00:20]} 14. Bd3 {[%emt 0:00:09]} Nc6 {[%emt 0:00:34]} 15. Be4 {[%emt 0:00:06]} Qd6 {[%emt 0:00:05]} 16. O-O {[%emt 0:00:10]} O-O {[%emt 0:01:00]} 17. a4 {[%emt 0:00:17]} Rab8 {[%emt 0:00:22]} 18. axb5 {[%emt 0:00:06]} axb5 {[%emt 0:00:16]} 19. Ra3 {[%emt 0:00:05]} Nb4 {[%emt 0:00:29]} 20. Rg3+ {[%emt 0:00:12]} Kh8 {[%emt 0:00:29]} 21. Rh3 {[%emt 0:00:04]} Rg8 {[%emt 0:02:59]} 22. Qxh7# {[%emt 0:00:09]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.10"]
[White "Bongo Akanga Ndjila, Barthelemy"]
[Black "Amdouni, Zoubaier"]
[Result "1/2-1/2"]
[WhiteElo "1803"]
[BlackElo "2229"]
[PlyCount "88"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:03:04"]
[BlackClock "0:00:58"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:04]} 3. Bg5 {[%emt 0:00:42]} e6 {[%emt 0:00:09]} 4. e3 {[%emt 0:00:09]} Nbd7 {[%emt 0:00:21]} 5. Bd3 {[%emt 0:01:25]} c6 {[%emt 0:00:05]} 6. O-O {[%emt 0:00:21]} Bd6 {[%emt 0:00:15]} 7. c4 {[%emt 0:00:13]} O-O {[%emt 0:00:44]} 8. Qc2 {[%emt 0:00:10]} h6 {[%emt 0:00:07]} 9. Bh4 {[%emt 0:00:03]} dxc4 {[%emt 0:00:13]} 10. Bxc4 {[%emt 0:00:56]} e5 {[%emt 0:00:04]} 11. dxe5 {[%emt 0:01:16]} Nxe5 {[%emt 0:00:17]} 12. Nxe5 {[%emt 0:00:06]} Bxe5 {[%emt 0:00:03]} 13. Rd1 {[%emt 0:00:03]} Bxh2+ {[%emt 0:01:32]} 14. Kh1 {[%emt 0:00:56]} Bd6 {[%emt 0:00:07]} 15. Bg3 {[%emt 0:00:18]} Ne8 {[%emt 0:00:58]} 16. Qd2 {[%emt 0:04:10]} Qf6 {[%emt 0:01:11]} 17. Bxd6 {[%emt 0:00:12]} Nxd6 {[%emt 0:00:03]} 18. Qxd6 {[%emt 0:00:17]} Qh4+ {[%emt 0:00:26]} 19. Kg1 {[%emt 0:00:12]} Qxc4 {[%emt 0:00:02]} 20. Nc3 {[%emt 0:00:09]} Qe6 {[%emt 0:00:35]} 21. Qc7 {[%emt 0:00:15]} Qg6 {[%emt 0:00:05]} 22. Rd4 {[%emt 0:00:36]} Bh3 {[%emt 0:01:14]} 23. Qh2 {[%emt 0:00:07]} Be6 {[%emt 0:00:07]} 24. Rad1 {[%emt 0:00:24]} c5 {[%emt 0:04:15]} 25. Rd6 {[%emt 0:00:48]} Qg4 {[%emt 0:01:04]} 26. e4 {[%emt 0:01:32]} Rae8 {[%emt 0:04:03]} 27. f3 {[%emt 0:01:31]} Qg5 {[%emt 0:00:03]} 28. f4 {[%emt 0:00:06]} Qg4 {[%emt 0:00:04]} 29. f5 {[%emt 0:00:05]} Bc4 {[%emt 0:00:44]} 30. f6 {[%emt 0:00:43]} Re6 {[%emt 0:01:11]} 31. fxg7 {[%emt 0:00:20]} Kxg7 {[%emt 0:00:11]} 32. b3 {[%emt 0:00:41]} Ba6 {[%emt 0:00:34]} 33. Rxe6 {[%emt 0:00:20]} fxe6 {[%emt 0:05:15]} 34. Qe5+ {[%emt 0:00:55]} Kg8 {[%emt 0:01:05]} 35. Qxc5 {[%emt 0:01:32]} Qg3 {[%emt 0:00:03]} 36. Qd4 {[%emt 0:01:17]} Rf7 {[%emt 0:00:47]} 37. b4 {[%emt 0:00:39]} Rg7 {[%emt 0:01:17]} 38. Rd2 {[%emt 0:04:14]} Bc4 {[%emt 0:00:04]} 39. e5 {[%emt 0:01:03]} b5 {[%emt 0:00:07]} 40. Ne4 {[%emt 0:00:17]} Qe1+ {[%emt 0:00:04]} 41. Kh2 {[%emt 0:00:01]} Qh4+ {[%emt 0:00:02]} 42. Kg1 {[%emt 0:00:02]} Qe1+ {[%emt 0:00:27]} 43. Kh2 {[%emt 0:00:02]} Qh4+ {[%emt 0:01:12]} 44. Kg1 {[%emt 0:00:03]} Qe1+ {[%emt 0:00:02] #D} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.11"]
[White "Wanyama, Harold"]
[Black "Joelson, Ricardo"]
[Result "1-0"]
[WhiteElo "2312"]
[BlackElo "2017"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 9,83,-13,-5,-16,0,0,0,-21,-20,-21,0,0,12,-6,38,-31,18,0,0,0,-2,-14,43,22,29,0,35,40,185,78,98,83,81,72,93,82,95,43,142,30,44,53,29,41,39,29,38,31,38,27,54,54,122,121,127,141,188,146,140,99,105,53,73,61,130,38,64,31,25,25,36,0,29986,1118,29987,29988]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Be7 5. Qc2 b6 6. Nf3 {D35: Queen's Gambit Declined: Exchange Variation.} Bb7 7. cxd5 exd5 8. Ne5 {The position is equal.} O-O 9. Bd3 Nbd7 10. f4 c5 11. O-O Rc8 {[#]} 12. Rf3 $146 ({White should play} 12. Nxd7 $14 Qxd7 13. Bf5) ({Predecessor:} 12. Nxd7 Nxd7 13. Bxh7+ Kh8 14. Rf3 Nf6 15. Bf5 Rc7 16. Rh3+ Kg8 17. Qf2 Bc8 18. Bxc8 Nh7 19. Bf5 g6 20. Qg3 Rc6 21. Bd3 cxd4 22. exd4 {1-0 (22) Pozuelo Yvancos,E (1716)-Jara Garcia,A (1418) Benidorm 2013}) 12... cxd4 13. exd4 Ne4 14. Qa4 Nxe5 (14... Nxc3 $6 15. Qxd7 Qxd7 16. Nxd7 $16) 15. fxe5 Bc6 ({Reject} 15... Nxc3 16. bxc3 (16. Qxa7 $2 Bc6 $19) 16... Bc6 17. Qb3 $16 (17. Qxa7 $2 Ra8 $19)) (15... f6 $11) 16. Qd1 (16. Qxa7 $2 Ra8 $19) 16... f5 17. Rh3 g6 18. Bh6 Re8 (18... Rf7 $14) 19. Qb3 (19. Nxe4 $18 {has better winning chances.} fxe4 20. Ba6) 19... Ng5 20. Rg3 Ne6 21. Ne2 Bf8 22. Bd2 Bg7 23. Rf1 (23. Ba6 $16) 23... Qd7 {[#]} (23... b5 $14) 24. Qd1 (24. h4 $1 $16) 24... Bb5 $1 $11 25. Bxb5 Qxb5 26. Bc3 Rf8 27. Nf4 Nxf4 28. Rxf4 Qc4 29. a3 Rfd8 30. Rf1 Re8 {[#]} (30... Qc6 $14) 31. h4 $1 $16 Re6 32. h5 Rf8 33. hxg6 Rxg6 34. Rgf3 Bh6 35. Qe1 ({But not} 35. Rxf5 $6 Be3+ 36. Kh2 Rh6+ 37. Kg3 Rg6+ 38. Kh4 Rh6+ 39. Kg3 Rg6+ 40. Kh4 Rh6+ 41. Kg3 $11) (35. Bb4 $16 Re8 36. Rh3) 35... f4 36. R1f2 Qc6 ({Better is} 36... Qc8 $14) 37. Re2 (37. Bd2 $16) 37... Qe6 38. Qd2 Qg4 {Hoping for ...Qxf3.} 39. Qd3 Bg5 40. Be1 h5 $2 {[%mdl 8192]} 41. Qxg6+ Kh8 {[#]} 42. Rh3 $1 {[%mdl 512] Weighted Error Value: White=0.27/Black=0.47} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.12"]
[White "Singe, Philip Mbawala"]
[Black "Bouzidi, Ahmed"]
[Result "0-1"]
[WhiteElo "1857"]
[BlackElo "2163"]
[PlyCount "52"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:13:22"]
[BlackClock "0:18:12"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:15]} 2. Nf3 {[%emt 0:00:04]} Nc6 {[%emt 0:00:04]} 3. d4 {[%emt 0:00:02]} exd4 {[%emt 0:00:08]} 4. Bc4 {[%emt 0:00:02]} Bc5 {[%emt 0:01:19]} 5. Ng5 {[%emt 0:00:07]} Nh6 {[%emt 0:00:03]} 6. Nxf7 {[%emt 0:00:02]} Nxf7 {[%emt 0:00:03]} 7. Bxf7+ {[%emt 0:00:04]} Kxf7 {[%emt 0:00:02]} 8. Qh5+ {[%emt 0:00:03]} g6 {[%emt 0:00:29]} 9. Qd5+ {[%emt 0:00:10]} Kg7 {[%emt 0:00:17]} 10. Qxc5 {[%emt 0:00:02]} d6 {[%emt 0:00:05]} 11. Qb5 {[%emt 0:00:04]} Re8 {[%emt 0:01:07]} 12. Nd2 {[%emt 0:01:21]} d5 {[%emt 0:00:30]} 13. f3 {[%emt 0:00:52]} dxe4 {[%emt 0:01:05]} 14. Nxe4 {[%emt 0:00:16]} Rxe4+ {[%emt 0:01:42]} 15. fxe4 {[%emt 0:00:06]} Qh4+ {[%emt 0:00:04]} 16. Kf1 {[%emt 0:00:43]} Be6 {[%emt 0:01:08]} 17. h3 {[%emt 0:08:35]} Rf8+ {[%emt 0:00:23]} 18. Kg1 {[%emt 0:00:05]} Qf2+ {[%emt 0:00:07]} 19. Kh2 {[%emt 0:00:04]} Rf3 {[%emt 0:00:02]} 20. Qb3 {[%emt 0:02:32]} Bxb3 {[%emt 0:00:11]} 21. axb3 {[%emt 0:00:02]} Ne5 {[%emt 0:01:46]} 22. Bg5 {[%emt 0:00:25]} Qg3+ {[%emt 0:00:08]} 23. Kg1 {[%emt 0:00:04]} Qxg5 {[%emt 0:00:03]} 24. Rxa7 {[%emt 0:00:04]} Qe3+ {[%emt 0:00:03]} 25. Kh2 {[%emt 0:00:03]} Rxh3+ {[%emt 0:00:03]} 26. gxh3 {[%emt 0:00:06]} Qf2# {[%emt 0:00:01]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.13"]
[White "Seddaoui, Yamine"]
[Black "Khalema, Sechaba"]
[Result "1-0"]
[WhiteElo "2127"]
[BlackElo "1827"]
[PlyCount "75"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:17:32"]
[BlackClock "0:23:46"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:01:18]} 2. Nf3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:05]} 3. Bb5 {[%emt 0:00:43]} a6 {[%emt 0:00:12]} 4. Bxc6 {[%emt 0:00:04]} dxc6 {[%emt 0:00:17]} 5. O-O {[%emt 0:00:04]} Be6 {[%emt 0:00:09]} 6. Nxe5 {[%emt 0:00:32]} Qd4 {[%emt 0:00:07]} 7. Nf3 {[%emt 0:00:18]} Qxe4 {[%emt 0:00:04]} 8. Re1 {[%emt 0:00:02]} Qg6 {[%emt 0:00:04]} 9. Nd4 {[%emt 0:01:49]} O-O-O {[%emt 0:00:04]} 10. Nxe6 {[%emt 0:00:02]} fxe6 {[%emt 0:00:02]} 11. d3 {[%emt 0:00:01]} Bd6 {[%emt 0:00:10]} 12. Qe2 {[%emt 0:00:03]} Re8 {[%emt 0:00:03]} 13. Nc3 {[%emt 0:00:04]} Nf6 {[%emt 0:00:03]} 14. Ne4 {[%emt 0:00:10]} Rhf8 {[%emt 0:00:07]} 15. Nxd6+ {[%emt 0:01:23]} cxd6 {[%emt 0:00:05]} 16. Bf4 {[%emt 0:00:33]} e5 {[%emt 0:00:04]} 17. Bg3 {[%emt 0:00:02]} Nd5 {[%emt 0:00:04]} 18. Qe4 {[%emt 0:02:00]} Qxe4 {[%emt 0:01:15]} 19. dxe4 {[%emt 0:00:07]} Nf6 {[%emt 0:00:06]} 20. Rad1 {[%emt 0:00:04]} Re6 {[%emt 0:00:05]} 21. f3 {[%emt 0:00:14]} Nh5 {[%emt 0:00:04]} 22. Bf2 {[%emt 0:00:08]} g5 {[%emt 0:00:04]} 23. Rd2 {[%emt 0:00:26]} Kc7 {[%emt 0:00:05]} 24. Red1 {[%emt 0:00:06]} Rg6 {[%emt 0:00:06]} 25. h3 {[%emt 0:00:19]} c5 {[%emt 0:00:09]} 26. a3 {[%emt 0:00:33]} a5 {[%emt 0:00:15]} 27. b3 {[%emt 0:00:25]} Ra8 {[%emt 0:00:18]} 28. c3 {[%emt 0:00:18]} Ra6 {[%emt 0:00:06]} 29. b4 {[%emt 0:00:35]} axb4 {[%emt 0:00:06]} 30. axb4 {[%emt 0:00:03]} b6 {[%emt 0:00:03]} 31. bxc5 {[%emt 0:00:14]} bxc5 {[%emt 0:00:04]} 32. Rb2 {[%emt 0:00:05]} Rb6 {[%emt 0:00:04]} 33. Ra2 {[%emt 0:01:00]} Rg8 {[%emt 0:00:04]} 34. Ra7+ {[%emt 0:00:19]} Kc6 {[%emt 0:00:11]} 35. Rxh7 {[%emt 0:00:09]} Nf4 {[%emt 0:00:05]} 36. Kf1 {[%emt 0:00:32]} Ra6 {[%emt 0:01:01]} 37. Rh6 {[%emt 0:00:08]} Rd8 {[%emt 0:00:15]} 38. g3 {[%emt 0:00:08] #r} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.14"]
[White "Njoroge Martin"]
[Black "Oatlhotse, Providence"]
[Result "0-1"]
[WhiteElo "1965"]
[BlackElo "2190"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:12:16"]
[BlackClock "0:16:02"]

1. Nf3 {[%emt 0:00:00]} c5 {[%emt 0:00:09]} 2. c4 {[%emt 0:00:04]} Nc6 {[%emt 0:00:02]} 3. Nc3 {[%emt 0:00:03]} g6 {[%emt 0:00:02]} 4. e3 {[%emt 0:00:17]} Bg7 {[%emt 0:00:02]} 5. g3 {[%emt 0:00:01]} Nf6 {[%emt 0:00:37]} 6. Bg2 {[%emt 0:00:05]} O-O {[%emt 0:00:04]} 7. O-O {[%emt 0:00:04]} b6 {[%emt 0:00:04]} 8. Qe2 {[%emt 0:00:06]} Ba6 {[%emt 0:00:08]} 9. Rb1 {[%emt 0:00:07]} Rc8 {[%emt 0:00:18]} 10. d3 {[%emt 0:00:04]} d5 {[%emt 0:00:21]} 11. Rd1 {[%emt 0:01:33]} e6 {[%emt 0:00:40]} 12. b3 {[%emt 0:00:23]} Qd7 {[%emt 0:02:25]} 13. Bb2 {[%emt 0:00:07]} Rfd8 {[%emt 0:00:13]} 14. Qe1 {[%emt 0:00:18]} d4 {[%emt 0:00:23]} 15. exd4 {[%emt 0:00:08]} Nxd4 {[%emt 0:00:08]} 16. Nxd4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:02]} 17. Ne4 {[%emt 0:00:24]} Ne8 {[%emt 0:00:36]} 18. f4 {[%emt 0:00:15]} h6 {[%emt 0:00:22]} 19. Qd2 {[%emt 0:00:52]} Bb7 {[%emt 0:00:37]} 20. Qf2 {[%emt 0:00:24]} Bc6 {[%emt 0:01:24]} 21. Re1 {[%emt 0:00:06]} Nc7 {[%emt 0:00:22]} 22. h4 {[%emt 0:02:44]} Ne8 {[%emt 0:01:21]} 23. Bf3 {[%emt 0:00:14]} Nd6 {[%emt 0:01:26]} 24. Nxd6 {[%emt 0:01:58]} Qxd6 {[%emt 0:00:08]} 25. Bxc6 {[%emt 0:00:05]} Qxc6 {[%emt 0:00:42]} 26. Re4 {[%emt 0:00:32]} Rd7 {[%emt 0:00:12]} 27. Bxd4 {[%emt 0:01:44]} Qxe4 {[%emt 0:00:20]} 28. Bxg7 {[%emt 0:00:41]} Qxd3 {[%emt 0:00:09]} 29. Qb2 {[%emt 0:00:16]} Qxg3+ {[%emt 0:00:11]} 30. Kh1 {[%emt 0:00:06]} Qxh4+ {[%emt 0:00:10]} 31. Kg1 {[%emt 0:00:03]} Qg4+ {[%emt 0:00:18]} 32. Kh1 {[%emt 0:00:04]} Qf3+ {[%emt 0:00:31]} 33. Kg1 {[%emt 0:00:05]} Qe3+ {[%emt 0:00:11]} 34. Kh1 {[%emt 0:00:12]} Rd2 {[%emt 0:00:11]} 35. Qc3 {[%emt 0:04:25]} Qe4+ {[%emt 0:00:12]} 36. Qf3 {[%emt 0:00:16]} Qxf3+ {[%emt 0:00:05]} 37. Kg1 {[%emt 0:00:02]} Qg2# {[%emt 0:00:02]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.14"]
[White "Njoroge, Martin"]
[Black "Oatlhotse, Providence"]
[Result "0-1"]
[ECO "A38"]
[WhiteElo "1781"]
[BlackElo "2182"]
[Annotator "ChessBase"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. Nf3 {[%emt 0:00:00]} c5 {[%emt 0:00:09]} 2. c4 {[%emt 0:00:04]} Nc6 {[%emt 0:00:02]} 3. Nc3 {[%emt 0:00:03]} g6 {[%emt 0:00:02]} 4. e3 {[%emt 0:00:17]} Bg7 {[%emt 0:00:02]} 5. g3 {[%emt 0:00:01]} Nf6 {[%emt 0:00:37]} 6. Bg2 {[%emt 0:00:05]} O-O {[%emt 0:00:04]} 7. O-O {[%emt 0:00:04]} b6 {[%emt 0:00:04]} 8. Qe2 {[%emt 0:00:06]} Ba6 {[%emt 0:00:08]} 9. Rb1 {[%emt 0:00:07]} Rc8 {[%emt 0:00:18]} 10. d3 {[%emt 0:00:04]} d5 {[%emt 0:00:21]} 11. Rd1 {[%emt 0:01:33]} e6 {[%emt 0:00:40]} 12. b3 {[%emt 0:00:23]} Qd7 {[%emt 0:02:25]} 13. Bb2 {[%emt 0:00:07]} Rfd8 {[%emt 0:00:13]} 14. Qe1 {[%emt 0:00:18]} d4 {[%emt 0:00:23]} 15. exd4 {[%emt 0:00:08]} Nxd4 {[%emt 0:00:08]} 16. Nxd4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:02]} 17. Ne4 {[%emt 0:00:24]} Ne8 {[%emt 0:00:36]} 18. f4 {[%emt 0:00:15]} h6 {[%emt 0:00:22]} 19. Qd2 {[%emt 0:00:52]} Bb7 {[%emt 0:00:37]} 20. Qf2 {[%emt 0:00:24]} Bc6 {[%emt 0:01:24]} 21. Re1 {[%emt 0:00:06]} Nc7 {[%emt 0:00:22]} 22. h4 {[%emt 0:02:44]} Ne8 {[%emt 0:01:21]} 23. Bf3 {[%emt 0:00:14]} Nd6 {[%emt 0:01:26]} 24. Nxd6 {[%emt 0:01:58]} Qxd6 {[%emt 0:00:08]} 25. Bxc6 {[%emt 0:00:05]} Qxc6 {[%emt 0:00:42]} 26. Re4 {[%emt 0:00:32]} Rd7 {[%emt 0:00:12]} 27. Bxd4 {[%emt 0:01:44]} Qxe4 {[%emt 0:00:20]} 28. Bxg7 {[%emt 0:00:41]} Qxd3 {[%emt 0:00:09]} 29. Qb2 {[%emt 0:00:16]} Qxg3+ {[%emt 0:00:11]} 30. Kh1 {[%emt 0:00:06]} Qxh4+ {[%emt 0:00:10]} 31. Kg1 {[%emt 0:00:03]} Qg4+ {[%emt 0:00:18]} 32. Kh1 {[%emt 0:00:04]} Qf3+ {[%emt 0:00:31]} 33. Kg1 {[%emt 0:00:05]} Qe3+ {[%emt 0:00:11]} 34. Kh1 {[%emt 0:00:12]} Rd2 {[%emt 0:00:11]} 35. Qc3 {[%emt 0:04:25]} Qe4+ {[%emt 0:00:12]} 36. Qf3 {[%emt 0:00:16]} Qxf3+ {[%emt 0:00:05]} 37. Kg1 {[%emt 0:00:02]} Qg2# {[%emt 0:00:02]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.15"]
[White "Miguel, Sergio"]
[Black "Mwashe, Philip"]
[Result "1-0"]
[WhiteElo "2377"]
[BlackElo "1756"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]

{[%evp 13,109,-4,16,7,23,23,52,0,0,-6,9,12,4,11,37,24,12,-14,79,3,3,10,8,4,0,-8,0,-3,-3,-6,0,0,-5,-5,38,19,30,7,7,8,8,4,10,5,8,-35,-37,-35,41,41,54,44,51,52,108,25,52,32,143,156,141,135,264,241,191,118,460,454,456,443,675,655,891,897,1383,1323,29971,29972,29976,29977,29976,29977,29979,29980,29980,29980,29981,29982,29984,29985,29985,29986,29986,29987,29987,29988,29988,29989]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Nbd2 d6 6. h3 Nbd7 {6...b6 injects fresh life into this line.} 7. Bc4 c5 8. O-O {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} a6 9. a4 {[#]} Nb6 $146 ({Predecessor:} 9... b6 10. c3 Bb7 11. Qb3 d5 12. Be2 c4 13. Qc2 b5 14. axb5 axb5 15. Ra3 Rxa3 16. bxa3 {0-1 (36) Peet,J (1865)-Grewal,B (2211) Swansea 2006}) 10. a5 (10. dxc5 $14 dxc5 11. Bb3) 10... Nxc4 $11 11. Nxc4 {Black must now prevent Nb6.} cxd4 12. Nb6 (12. Qxd4 $2 e5 $17) 12... Rb8 13. exd4 Bf5 14. c4 Nd7 15. c5 (15. Nxd7 {with more complications.} Qxd7 16. Re1 h6 17. Nh4 g5 18. Nxf5 Qxf5 19. Bg3) 15... e5 {[#]} (15... Nxb6 $11 {remains equal.} 16. cxb6 h6) 16. Nxd7 (16. dxe5 $1 $16 {Hoping for Nxd7.} dxc5 17. Nd5) 16... Qxd7 17. dxe5 dxc5 18. Qxd7 Bxd7 19. e6 Bxe6 20. Bxb8 Rxb8 21. Rac1 Rc8 22. Rc2 Bf5 23. Rd2 Bh6 24. Rd6 Bg7 25. Rb6 Be4 26. Re1 Bc6 27. Ne5 Re8 28. f4 $36 {[%mdl 2048] White has the initiative.} f6 29. Nd3 {Rxe8+ is the strong threat.} (29. Nxc6 {seems wilder.} Rxe1+ 30. Kf2 Rb1 31. Rxb7 c4 32. Rb6) 29... Rxe1+ 30. Nxe1 $15 {[%mdl 4096] Endgame KRN-KB} f5 (30... Bf8 $15) 31. Nf3 $14 Kf8 32. Kf2 Ke7 33. g4 Kd6 (33... fxg4 $14 34. hxg4 Kd6) 34. Ke3 (34. gxf5 $16 gxf5 35. Ne5 Bxe5 36. fxe5+ Kxe5 37. Rb3) 34... fxg4 35. hxg4 Kc7 (35... h5 $14) 36. Ne5 $16 Bd5 37. g5 Bh8 (37... Bf8 $16 {was necessary.} 38. Ng4 Be7) 38. Kd3 Bg7 {[#]} 39. Ng4 (39. b4 $1 $18 {[%cal Rb4c5]}) 39... Bd4 {[%mdl 8192] Black cannot hold the game after this.} (39... Bf8 $16) 40. Nf6 $18 Bc6 41. Nxh7 Bg1 (41... Bb5+ $142 42. Kc2 Bc6) 42. Nf8 c4+ 43. Kxc4 Bxb6 44. axb6+ {KB-KN} Kd6 45. Nxg6 {White mates.} Ke6 46. f5+ Kd6 47. f6 Be8 48. Nh8 Ke6 49. Kc5 Bh5 50. f7 Bxf7 51. Nxf7 Kxf7 52. Kd6 Kg6 53. Kc7 Kxg5 54. Kxb7 Kf6 55. Kxa6 {Weighted Error Value: White=0.14/Black=0.49} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.16"]
[White "Vermaak, Ashley Christopher"]
[Black "Oliveira, Luciano"]
[Result "0-1"]
[WhiteElo "1751"]
[BlackElo "2115"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:01:19"]
[BlackClock "0:07:24"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:08]} 2. c4 {[%emt 0:00:04]} e6 {[%emt 0:00:18]} 3. Nf3 {[%emt 0:00:06]} Nf6 {[%emt 0:00:06]} 4. Nc3 {[%emt 0:00:04]} Be7 {[%emt 0:00:08]} 5. Bf4 {[%emt 0:00:06]} O-O {[%emt 0:00:53]} 6. e3 {[%emt 0:00:07]} c6 {[%emt 0:00:15]} 7. Be2 {[%emt 0:00:36]} dxc4 {[%emt 0:00:44]} 8. a4 {[%emt 0:00:06]} Nd5 {[%emt 0:00:39]} 9. O-O {[%emt 0:03:22]} Nxf4 {[%emt 0:00:27]} 10. exf4 {[%emt 0:00:05]} c5 {[%emt 0:01:12]} 11. d5 {[%emt 0:05:58]} exd5 {[%emt 0:02:34]} 12. Nxd5 {[%emt 0:00:44]} Nc6 {[%emt 0:00:53]} 13. Ne5 {[%emt 0:03:44]} Nd4 {[%emt 0:05:08]} 14. Bxc4 {[%emt 0:00:08]} Be6 {[%emt 0:00:17]} 15. Nxe7+ {[%emt 0:03:27]} Qxe7 {[%emt 0:00:07]} 16. Bxe6 {[%emt 0:00:13]} Qxe6 {[%emt 0:00:08]} 17. Re1 {[%emt 0:01:22]} Qf5 {[%emt 0:00:34]} 18. Rc1 {[%emt 0:00:51]} b6 {[%emt 0:01:29]} 19. Qg4 {[%emt 0:00:20]} Qxg4 {[%emt 0:00:18]} 20. Nxg4 {[%emt 0:00:04]} Rfe8 {[%emt 0:00:07]} 21. Ne3 {[%emt 0:00:34]} Re4 {[%emt 0:00:32]} 22. b4 {[%emt 0:01:11]} cxb4 {[%emt 0:00:56]} 23. Rc4 {[%emt 0:02:21]} Rae8 {[%emt 0:01:48]} 24. Rxb4 {[%emt 0:00:25]} Nf3+ {[%emt 0:00:20]} 25. gxf3 {[%emt 0:00:36]} Rxb4 {[%emt 0:00:05]} 26. Ra1 {[%emt 0:00:13]} Rxf4 {[%emt 0:00:16]} 27. a5 {[%emt 0:00:13]} b5 {[%emt 0:00:26]} 28. a6 {[%emt 0:00:16]} Ra4 {[%emt 0:00:19]} 29. Rb1 {[%emt 0:00:05]} Rb8 {[%emt 0:00:16]} 30. Nd5 {[%emt 0:01:24]} Rxa6 {[%emt 0:00:13]} 31. Nc7 {[%emt 0:00:16]} Rc6 {[%emt 0:00:53]} 32. Rxb5 {[%emt 0:00:16]} Rxb5 {[%emt 0:00:06]} 33. Nxb5 {[%emt 0:00:03]} a5 {[%emt 0:00:09]} 34. Kf1 {[%emt 0:00:05]} Rc5 {[%emt 0:00:24]} 35. Nd4 {[%emt 0:00:07]} a4 {[%emt 0:00:08]} 36. Ke1 {[%emt 0:00:15]} a3 {[%emt 0:00:08]} 37. Kd2 {[%emt 0:00:04]} Rd5 {[%emt 0:00:22] #R} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.17"]
[White "Paiva, Donaldo"]
[Black "Ebersohn, Raymond Gerhard"]
[Result "1-0"]
[WhiteElo "2230"]
[BlackElo "1726"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:00:21"]
[BlackClock "0:02:29"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:51]} 2. g3 {[%emt 0:00:07]} e6 {[%emt 0:00:07]} 3. Bg2 {[%emt 0:00:06]} d5 {[%emt 0:00:05]} 4. Nf3 {[%emt 0:00:04]} c6 {[%emt 0:00:09]} 5. Qc2 {[%emt 0:00:22]} Nbd7 {[%emt 0:00:20]} 6. O-O {[%emt 0:00:04]} Bd6 {[%emt 0:00:30]} 7. d4 {[%emt 0:00:09]} O-O {[%emt 0:00:15]} 8. Nbd2 {[%emt 0:00:06]} Qe7 {[%emt 0:01:09]} 9. e4 {[%emt 0:01:18]} dxe4 {[%emt 0:00:11]} 10. Nxe4 {[%emt 0:00:04]} Nxe4 {[%emt 0:00:04]} 11. Qxe4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:03]} 12. Qe2 {[%emt 0:00:03]} h6 {[%emt 0:01:30]} 13. Bd2 {[%emt 0:01:16]} Qc7 {[%emt 0:01:41]} 14. Rfd1 {[%emt 0:01:45]} b6 {[%emt 0:00:38]} 15. Rac1 {[%emt 0:00:37]} c5 {[%emt 0:00:33]} 16. dxc5 {[%emt 0:00:17]} Bxc5 {[%emt 0:00:15]} 17. Bf4 {[%emt 0:00:10]} Qe7 {[%emt 0:00:25]} 18. a3 {[%emt 0:01:27]} a5 {[%emt 0:00:04]} 19. Ne5 {[%emt 0:07:35]} Bb7 {[%emt 0:00:06]} 20. Nc6 {[%emt 0:00:04]} Bxc6 {[%emt 0:00:04]} 21. Bxc6 {[%emt 0:00:04]} Rac8 {[%emt 0:00:02]} 22. Bf3 {[%emt 0:00:13]} Rfd8 {[%emt 0:02:07]} 23. Be5 {[%emt 0:00:11]} Nd7 {[%emt 0:01:09]} 24. Bc3 {[%emt 0:00:12]} e5 {[%emt 0:01:04]} 25. Bg4 {[%emt 0:00:11]} f6 {[%emt 0:00:43]} 26. Rd5 {[%emt 0:00:12]} Rc6 {[%emt 0:00:23]} 27. Rcd1 {[%emt 0:05:00]} Rd6 {[%emt 0:00:06]} 28. b4 {[%emt 0:00:59]} Rxd5 {[%emt 0:00:10]} 29. Rxd5 {[%emt 0:00:04]} axb4 {[%emt 0:00:03]} 30. axb4 {[%emt 0:00:03]} Bd6 {[%emt 0:01:00]} 31. Qd2 {[%emt 0:01:44]} Nf8 {[%emt 0:00:10]} 32. h4 {[%emt 0:03:06]} Bc7 {[%emt 0:00:15]} 33. h5 {[%emt 0:00:08]} Rd6 {[%emt 0:00:55]} 34. c5 {[%emt 0:00:24]} bxc5 {[%emt 0:00:10]} 35. bxc5 {[%emt 0:00:03]} Rc6 {[%emt 0:01:09]} 36. Bb4 {[%emt 0:00:08]} Qf7 {[%emt 0:04:13]} 37. Bf3 {[%emt 0:00:17]} Re6 {[%emt 0:00:25]} 38. Bd1 {[%emt 0:00:20]} Kh8 {[%emt 0:00:57]} 39. Bb3 {[%emt 0:01:45]} Qxh5 {[%emt 0:00:05]} 40. Rd7 {[%emt 0:00:10]} Qf3 {[%emt 0:01:23]} 41. Bxe6 {[%emt 0:00:17]} Nxe6 {[%emt 0:00:04]} 42. Rxc7 {[%emt 0:00:11]} Nd4 {[%emt 0:01:58]} 43. Qe3 {[%emt 0:00:28]} Qg4 {[%emt 0:01:19]} 44. Rb7 {[%emt 0:00:22]} Nf3+ {[%emt 0:01:08]} 45. Kf1 {[%emt 0:00:05]} Nh2+ {[%emt 0:00:03]} 46. Kg2 {[%emt 0:00:04] #r} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.17"]
[White "Paiva, Donaldo"]
[Black "Ebersohn, Raymond"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2162"]
[BlackElo "1726"]
[Annotator "ChessBase"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:51]} 2. g3 {[%emt 0:00:07]} e6 {[%emt 0:00:07]} 3. Bg2 {[%emt 0:00:06]} d5 {[%emt 0:00:05]} 4. Nf3 {[%emt 0:00:04]} c6 {[%emt 0:00:09]} 5. Qc2 {[%emt 0:00:22]} Nbd7 {[%emt 0:00:20]} 6. O-O {[%emt 0:00:04]} Bd6 {[%emt 0:00:30]} 7. d4 {[%emt 0:00:09]} O-O {[%emt 0:00:15]} 8. Nbd2 {[%emt 0:00:06]} Qe7 {[%emt 0:01:09]} 9. e4 {[%emt 0:01:18]} dxe4 {[%emt 0:00:11]} 10. Nxe4 {[%emt 0:00:04]} Nxe4 {[%emt 0:00:04]} 11. Qxe4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:03]} 12. Qe2 {[%emt 0:00:03]} h6 {[%emt 0:01:30]} 13. Bd2 {[%emt 0:01:16]} Qc7 {[%emt 0:01:41]} 14. Rfd1 {[%emt 0:01:45]} b6 {[%emt 0:00:38]} 15. Rac1 {[%emt 0:00:37]} c5 {[%emt 0:00:33]} 16. dxc5 {[%emt 0:00:17]} Bxc5 {[%emt 0:00:15]} 17. Bf4 {[%emt 0:00:10]} Qe7 {[%emt 0:00:25]} 18. a3 {[%emt 0:01:27]} a5 {[%emt 0:00:04]} 19. Ne5 {[%emt 0:07:35]} Bb7 {[%emt 0:00:06]} 20. Nc6 {[%emt 0:00:04]} Bxc6 {[%emt 0:00:04]} 21. Bxc6 {[%emt 0:00:04]} Rac8 {[%emt 0:00:02]} 22. Bf3 {[%emt 0:00:13]} Rfd8 {[%emt 0:02:07]} 23. Be5 {[%emt 0:00:11]} Nd7 {[%emt 0:01:09]} 24. Bc3 {[%emt 0:00:12]} e5 {[%emt 0:01:04]} 25. Bg4 {[%emt 0:00:11]} f6 {[%emt 0:00:43]} 26. Rd5 {[%emt 0:00:12]} Rc6 {[%emt 0:00:23]} 27. Rcd1 {[%emt 0:05:00]} Rd6 {[%emt 0:00:06]} 28. b4 {[%emt 0:00:59]} Rxd5 {[%emt 0:00:10]} 29. Rxd5 {[%emt 0:00:04]} axb4 {[%emt 0:00:03]} 30. axb4 {[%emt 0:00:03]} Bd6 {[%emt 0:01:00]} 31. Qd2 {[%emt 0:01:44]} Nf8 {[%emt 0:00:10]} 32. h4 {[%emt 0:03:06]} Bc7 {[%emt 0:00:15]} 33. h5 {[%emt 0:00:08]} Rd6 {[%emt 0:00:55]} 34. c5 {[%emt 0:00:24]} bxc5 {[%emt 0:00:10]} 35. bxc5 {[%emt 0:00:03]} Rc6 {[%emt 0:01:09]} 36. Bb4 {[%emt 0:00:08]} Qf7 {[%emt 0:04:13]} 37. Bf3 {[%emt 0:00:17]} Re6 {[%emt 0:00:25]} 38. Bd1 {[%emt 0:00:20]} Kh8 {[%emt 0:00:57]} 39. Bb3 {[%emt 0:01:45]} Qxh5 {[%emt 0:00:05]} 40. Rd7 {[%emt 0:00:10]} Qf3 {[%emt 0:01:23]} 41. Bxe6 {[%emt 0:00:17]} Nxe6 {[%emt 0:00:04]} 42. Rxc7 {[%emt 0:00:11]} Nd4 {[%emt 0:01:58]} 43. Qe3 {[%emt 0:00:28]} Qg4 {[%emt 0:01:19]} 44. Rb7 {[%emt 0:00:22]} Nf3+ {[%emt 0:01:08]} 45. Kf1 {[%emt 0:00:05]} Nh2+ {[%emt 0:00:03]} 46. Kg2 {[%emt 0:00:04]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.18"]
[White "Hamzaoui, Khalil"]
[Black "Abdelazeez, Mohamed Abdalla"]
[Result "0-1"]
[WhiteElo "1883"]
[BlackElo "2214"]
[PlyCount "54"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:01:13"]
[BlackClock "0:17:20"]

1. g3 {[%emt 0:00:00]} d5 {[%emt 0:00:08]} 2. Bg2 {[%emt 0:00:16]} c6 {[%emt 0:00:04]} 3. Nf3 {[%emt 0:00:21]} Nf6 {[%emt 0:00:07]} 4. O-O {[%emt 0:00:07]} Bf5 {[%emt 0:00:05]} 5. d3 {[%emt 0:01:32]} e6 {[%emt 0:00:15]} 6. c4 {[%emt 0:00:54]} h6 {[%emt 0:00:06]} 7. cxd5 {[%emt 0:00:24]} exd5 {[%emt 0:00:06]} 8. Qb3 {[%emt 0:01:01]} Qb6 {[%emt 0:00:08]} 9. Nc3 {[%emt 0:01:51]} Nbd7 {[%emt 0:00:11]} 10. e4 {[%emt 0:01:42]} dxe4 {[%emt 0:00:12]} 11. dxe4 {[%emt 0:00:05]} Be6 {[%emt 0:00:05]} 12. Qc2 {[%emt 0:00:19]} Be7 {[%emt 0:03:36]} 13. Be3 {[%emt 0:00:41]} Qa5 {[%emt 0:00:26]} 14. Nd4 {[%emt 0:00:23]} Bc4 {[%emt 0:01:12]} 15. Nf5 {[%emt 0:02:23]} Bxf1 {[%emt 0:00:18]} 16. Bxf1 {[%emt 0:01:28]} Bf8 {[%emt 0:00:31]} 17. e5 {[%emt 0:02:10]} Ng4 {[%emt 0:01:09] Black stopped clock for 232 seconds. Arbiter stopped clock for 6 seconds.} 18. Re1 {[%emt 0:03:29]} Nxe3 {[%emt 0:00:27]} 19. Rxe3 {[%emt 0:00:03]} O-O-O {[%emt 0:00:09]} 20. Nb5 {[%emt 0:00:52]} Kb8 {[%emt 0:01:21]} 21. Nbd6 {[%emt 0:04:38]} Bxd6 {[%emt 0:00:09]} 22. Nxd6 {[%emt 0:00:12]} Nxe5 {[%emt 0:00:05]} 23. Ra3 {[%emt 0:02:20]} Qd5 {[%emt 0:00:42]} 24. Ne4 {[%emt 0:00:31]} f5 {[%emt 0:00:15]} 25. Nc5 {[%emt 0:00:04]} Nf3+ {[%emt 0:00:10]} 26. Rxf3 {[%emt 0:00:21]} Qxf3 {[%emt 0:00:06]} 27. Qb3 {[%emt 0:00:10]} Qxb3 {[%emt 0:00:07] #R} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.18"]
[White "Khalil, Hamzaoui"]
[Black "Abdelazeez, Mohamed Abdalla"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1704"]
[BlackElo "2160"]
[Annotator "ChessBase"]
[PlyCount "54"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. g3 {[%emt 0:00:00]} d5 {[%emt 0:00:08]} 2. Bg2 {[%emt 0:00:16]} c6 {[%emt 0:00:04]} 3. Nf3 {[%emt 0:00:21]} Nf6 {[%emt 0:00:07]} 4. O-O {[%emt 0:00:07]} Bf5 {[%emt 0:00:05]} 5. d3 {[%emt 0:01:32]} e6 {[%emt 0:00:15]} 6. c4 {[%emt 0:00:54]} h6 {[%emt 0:00:06]} 7. cxd5 {[%emt 0:00:24]} exd5 {[%emt 0:00:06]} 8. Qb3 {[%emt 0:01:01]} Qb6 {[%emt 0:00:08]} 9. Nc3 {[%emt 0:01:51]} Nbd7 {[%emt 0:00:11]} 10. e4 {[%emt 0:01:42]} dxe4 {[%emt 0:00:12]} 11. dxe4 {[%emt 0:00:05]} Be6 {[%emt 0:00:05]} 12. Qc2 {[%emt 0:00:19]} Be7 {[%emt 0:03:36]} 13. Be3 {[%emt 0:00:41]} Qa5 {[%emt 0:00:26]} 14. Nd4 {[%emt 0:00:23]} Bc4 {[%emt 0:01:12]} 15. Nf5 {[%emt 0:02:23]} Bxf1 {[%emt 0:00:18]} 16. Bxf1 {[%emt 0:01:28]} Bf8 {[%emt 0:00:31]} 17. e5 {[%emt 0:02:10]} Ng4 {[%emt 0:01:09]} 18. Re1 {[%emt 0:03:29]} Nxe3 {[%emt 0:00:27]} 19. Rxe3 {[%emt 0:00:03]} O-O-O {[%emt 0:00:09]} 20. Nb5 {[%emt 0:00:52]} Kb8 {[%emt 0:01:21]} 21. Nbd6 {[%emt 0:04:38]} Bxd6 {[%emt 0:00:09]} 22. Nxd6 {[%emt 0:00:12]} Nxe5 {[%emt 0:00:05]} 23. Ra3 {[%emt 0:02:20]} Qd5 {[%emt 0:00:42]} 24. Ne4 {[%emt 0:00:31]} f5 {[%emt 0:00:15]} 25. Nc5 {[%emt 0:00:04]} Nf3+ {[%emt 0:00:10]} 26. Rxf3 {[%emt 0:00:21]} Qxf3 {[%emt 0:00:06]} 27. Qb3 {[%emt 0:00:10]} Qxb3 {[%emt 0:00:07]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.19"]
[White "Pascoal, Eduardo A"]
[Black "Likoko, Elvis"]
[Result "1/2-1/2"]
[WhiteElo "2184"]
[BlackElo "1646"]
[PlyCount "71"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:01:47"]
[BlackClock "0:13:10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:05]} 2. Bf4 {[%emt 0:00:09]} d6 {[%emt 0:00:32]} 3. e3 {[%emt 0:00:07]} g6 {[%emt 0:00:04]} 4. h3 {[%emt 0:00:15]} Bg7 {[%emt 0:00:04]} 5. Nf3 {[%emt 0:00:04]} O-O {[%emt 0:00:05]} 6. c4 {[%emt 0:00:05]} c5 {[%emt 0:00:10]} 7. Nc3 {[%emt 0:00:04]} Bf5 {[%emt 0:00:09]} 8. Be2 {[%emt 0:00:04]} Nc6 {[%emt 0:01:39]} 9. O-O {[%emt 0:00:57]} cxd4 {[%emt 0:00:05]} 10. exd4 {[%emt 0:00:08]} Rc8 {[%emt 0:00:12]} 11. Rc1 {[%emt 0:01:54]} Qa5 {[%emt 0:00:16]} 12. Be3 {[%emt 0:01:00]} Ne4 {[%emt 0:00:13]} 13. Qb3 {[%emt 0:04:42]} Nxc3 {[%emt 0:02:30]} 14. Qxc3 {[%emt 0:04:32]} Qxc3 {[%emt 0:00:21]} 15. Rxc3 {[%emt 0:00:07]} e5 {[%emt 0:00:05]} 16. Rd1 {[%emt 0:02:02]} Rfe8 {[%emt 0:00:58]} 17. Kf1 {[%emt 0:01:43]} Be4 {[%emt 0:00:12]} 18. dxe5 {[%emt 0:03:35]} dxe5 {[%emt 0:00:08]} 19. Nd2 {[%emt 0:01:15]} Bf5 {[%emt 0:00:13]} 20. g4 {[%emt 0:00:36]} Be6 {[%emt 0:00:11]} 21. Ne4 {[%emt 0:00:04]} Rcd8 {[%emt 0:00:50]} 22. Rxd8 {[%emt 0:02:16]} Rxd8 {[%emt 0:00:15]} 23. Bg5 {[%emt 0:00:04]} Rd4 {[%emt 0:02:27]} 24. f3 {[%emt 0:00:06]} h6 {[%emt 0:00:31]} 25. Be3 {[%emt 0:00:30]} Rd8 {[%emt 0:00:07]} 26. Nc5 {[%emt 0:00:30]} Bc8 {[%emt 0:00:14]} 27. Rb3 {[%emt 0:00:37]} b6 {[%emt 0:00:22]} 28. Ne4 {[%emt 0:00:18]} f5 {[%emt 0:00:24]} 29. Nc3 {[%emt 0:00:10]} Nd4 {[%emt 0:01:14]} 30. Bxd4 {[%emt 0:00:08]} Rxd4 {[%emt 0:00:52]} 31. Nb5 {[%emt 0:00:15]} Rd7 {[%emt 0:00:43]} 32. Rd3 {[%emt 0:00:04]} e4 {[%emt 0:00:52]} 33. fxe4 {[%emt 0:00:10]} fxe4 {[%emt 0:00:08]} 34. Rd6 {[%emt 0:00:13]} a6 {[%emt 0:00:27]} 35. Rxd7 {[%emt 0:00:25]} Bxd7 {[%emt 0:00:02]} 36. Nd6 {[%emt 0:00:04] Black offered a draw. #d} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.20"]
[White "Monaheng Motlomelo"]
[Black "Simoes, Joao"]
[Result "0-1"]
[WhiteElo "1538"]
[BlackElo "2228"]
[PlyCount "64"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:00:42"]
[BlackClock "0:06:49"]

{Clock started by Arbiter.} 1. e4 {[%emt 0:09:09]} d5 {[%emt 0:00:11]} 2. exd5 {[%emt 0:00:06]} Qxd5 {[%emt 0:00:06]} 3. Nf3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:07]} 4. Nc3 {[%emt 0:00:05]} Qd8 {[%emt 0:00:07]} 5. Be2 {[%emt 0:00:06]} Bf5 {[%emt 0:00:22]} 6. a4 {[%emt 0:00:14]} e6 {[%emt 0:00:07]} 7. d3 {[%emt 0:00:10]} Nc6 {[%emt 0:00:17]} 8. Bd2 {[%emt 0:00:13]} Bb4 {[%emt 0:00:24]} 9. O-O {[%emt 0:00:10]} h6 {[%emt 0:00:10]} 10. Na2 {[%emt 0:00:53]} Be7 {[%emt 0:00:22]} 11. Rb1 {[%emt 0:00:40]} a6 {[%emt 0:00:42]} 12. b4 {[%emt 0:00:51]} O-O {[%emt 0:00:31]} 13. Re1 {[%emt 0:02:20]} Rb8 {[%emt 0:01:54]} 14. Bc3 {[%emt 0:01:23]} b5 {[%emt 0:00:45]} 15. a5 {[%emt 0:00:21]} Qd5 {[%emt 0:00:26]} 16. Ra1 {[%emt 0:01:01]} Rfd8 {[%emt 0:00:12]} 17. Qc1 {[%emt 0:01:19]} Qd6 {[%emt 0:00:52]} 18. Bf1 {[%emt 0:00:43]} Nd5 {[%emt 0:00:31]} 19. Qb2 {[%emt 0:02:20]} Nxc3 {[%emt 0:00:27]} 20. Nxc3 {[%emt 0:01:26]} Qxb4 {[%emt 0:01:11]} 21. Nd1 {[%emt 0:01:43]} Qxb2 {[%emt 0:01:04]} 22. Nxb2 {[%emt 0:00:10]} Bf6 {[%emt 0:00:22]} 23. Rab1 {[%emt 0:00:30]} Bc3 {[%emt 0:00:46]} 24. Rec1 {[%emt 0:01:04]} g5 {[%emt 0:04:10]} 25. Nd1 {[%emt 0:00:13]} Bg7 {[%emt 0:01:18]} 26. Rb3 {[%emt 0:00:56]} g4 {[%emt 0:01:14]} 27. Nd2 {[%emt 0:00:42]} Nd4 {[%emt 0:00:15]} 28. Ra3 {[%emt 0:00:11]} b4 {[%emt 0:02:46]} 29. Ra2 {[%emt 0:00:04]} Nb5 {[%emt 0:00:11]} 30. Nb3 {[%emt 0:00:20]} Nc3 {[%emt 0:00:48]} 31. Nxc3 {[%emt 0:00:07]} Bxc3 {[%emt 0:00:08]} 32. Nc5 {[%emt 0:00:05]} Rd6 {[%emt 0:00:45] #T} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.20"]
[White "Motlomelo, Monaheng"]
[Black "Simoes, Joao"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1538"]
[BlackElo "2134"]
[Annotator "ChessBase"]
[PlyCount "64"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:09:09]} d5 {[%emt 0:00:11]} 2. exd5 {[%emt 0:00:06]} Qxd5 {[%emt 0:00:06]} 3. Nf3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:07]} 4. Nc3 {[%emt 0:00:05]} Qd8 {[%emt 0:00:07]} 5. Be2 {[%emt 0:00:06]} Bf5 {[%emt 0:00:22]} 6. a4 {[%emt 0:00:14]} e6 {[%emt 0:00:07]} 7. d3 {[%emt 0:00:10]} Nc6 {[%emt 0:00:17]} 8. Bd2 {[%emt 0:00:13]} Bb4 {[%emt 0:00:24]} 9. O-O {[%emt 0:00:10]} h6 {[%emt 0:00:10]} 10. Na2 {[%emt 0:00:53]} Be7 {[%emt 0:00:22]} 11. Rb1 {[%emt 0:00:40]} a6 {[%emt 0:00:42]} 12. b4 {[%emt 0:00:51]} O-O {[%emt 0:00:31]} 13. Re1 {[%emt 0:02:20]} Rb8 {[%emt 0:01:54]} 14. Bc3 {[%emt 0:01:23]} b5 {[%emt 0:00:45]} 15. a5 {[%emt 0:00:21]} Qd5 {[%emt 0:00:26]} 16. Ra1 {[%emt 0:01:01]} Rfd8 {[%emt 0:00:12]} 17. Qc1 {[%emt 0:01:19]} Qd6 {[%emt 0:00:52]} 18. Bf1 {[%emt 0:00:43]} Nd5 {[%emt 0:00:31]} 19. Qb2 {[%emt 0:02:20]} Nxc3 {[%emt 0:00:27]} 20. Nxc3 {[%emt 0:01:26]} Qxb4 {[%emt 0:01:11]} 21. Nd1 {[%emt 0:01:43]} Qxb2 {[%emt 0:01:04]} 22. Nxb2 {[%emt 0:00:10]} Bf6 {[%emt 0:00:22]} 23. Rab1 {[%emt 0:00:30]} Bc3 {[%emt 0:00:46]} 24. Rec1 {[%emt 0:01:04]} g5 {[%emt 0:04:10]} 25. Nd1 {[%emt 0:00:13]} Bg7 {[%emt 0:01:18]} 26. Rb3 {[%emt 0:00:56]} g4 {[%emt 0:01:14]} 27. Nd2 {[%emt 0:00:42]} Nd4 {[%emt 0:00:15]} 28. Ra3 {[%emt 0:00:11]} b4 {[%emt 0:02:46]} 29. Ra2 {[%emt 0:00:04]} Nb5 {[%emt 0:00:11]} 30. Nb3 {[%emt 0:00:20]} Nc3 {[%emt 0:00:48]} 31. Nxc3 {[%emt 0:00:07]} Bxc3 {[%emt 0:00:08]} 32. Nc5 {[%emt 0:00:05]} Rd6 {[%emt 0:00:45]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.21"]
[White "Meftahi, Houssem"]
[Black "Simpson, Michael"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2132"]
[BlackElo "1513"]
[Annotator "ChessBase"]
[PlyCount "25"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:03]} e6 {[%emt 0:00:11]} 3. d4 {[%emt 0:00:03]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:02]} Nc6 {[%emt 0:00:02]} 5. Nc3 {[%emt 0:00:03]} Qc7 {[%emt 0:00:06]} 6. Be3 {[%emt 0:00:04]} a6 {[%emt 0:00:04]} 7. Qd2 {[%emt 0:00:04]} Nf6 {[%emt 0:00:12]} 8. O-O-O {[%emt 0:00:06]} Bb4 {[%emt 0:00:16]} 9. f3 {[%emt 0:00:04]} O-O {[%emt 0:01:07]} 10. Qe1 {[%emt 0:01:12]} d5 {[%emt 0:00:57]} 11. Nxc6 {[%emt 0:01:08]} Qxc6 {[%emt 0:00:23]} 12. exd5 {[%emt 0:00:07]} Nxd5 {[%emt 0:00:18]} 13. Nxd5 {[%emt 0:00:04]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.21"]
[White "Meftahi, Houssem"]
[Black "Simpson, Michael M"]
[Result "1-0"]
[WhiteElo "2110"]
[BlackElo "1995"]
[PlyCount "25"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:24:10"]
[BlackClock "0:23:17"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:03]} e6 {[%emt 0:00:11]} 3. d4 {[%emt 0:00:03]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:02]} Nc6 {[%emt 0:00:02]} 5. Nc3 {[%emt 0:00:03]} Qc7 {[%emt 0:00:06]} 6. Be3 {[%emt 0:00:04]} a6 {[%emt 0:00:04]} 7. Qd2 {[%emt 0:00:04]} Nf6 {[%emt 0:00:12]} 8. O-O-O {[%emt 0:00:06]} Bb4 {[%emt 0:00:16]} 9. f3 {[%emt 0:00:04]} O-O {[%emt 0:01:07]} 10. Qe1 {[%emt 0:01:12]} d5 {[%emt 0:00:57]} 11. Nxc6 {[%emt 0:01:08]} Qxc6 {[%emt 0:00:23]} 12. exd5 {[%emt 0:00:07]} Nxd5 {[%emt 0:00:18]} 13. Nxd5 {[%emt 0:00:04] #r} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.22"]
[White "Libe, Sofonea"]
[Black "Beukes, Dante"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1509"]
[BlackElo "2129"]
[Annotator "ChessBase"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:15]} 2. g3 {[%emt 0:00:12]} g6 {[%emt 0:00:35]} 3. Bg2 {[%emt 0:00:45]} Bg7 {[%emt 0:00:04]} 4. Nc3 {[%emt 0:00:07]} O-O {[%emt 0:00:05]} 5. e4 {[%emt 0:00:05]} d6 {[%emt 0:00:03]} 6. Nge2 {[%emt 0:00:02]} c5 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:04]} Nc6 {[%emt 0:00:02]} 8. Rb1 {[%emt 0:00:08]} Ne8 {[%emt 0:00:32]} 9. d3 {[%emt 0:00:15]} Nc7 {[%emt 0:00:48]} 10. Be3 {[%emt 0:01:23]} Ne6 {[%emt 0:00:39]} 11. Qd2 {[%emt 0:00:14]} Ned4 {[%emt 0:00:51]} 12. Bh6 {[%emt 0:01:57]} Bh3 {[%emt 0:05:11]} 13. Nxd4 {[%emt 0:00:25]} Nxd4 {[%emt 0:00:22]} 14. f3 {[%emt 0:00:48]} Bxg2 {[%emt 0:00:49]} 15. Kxg2 {[%emt 0:00:05]} a6 {[%emt 0:01:26]} 16. Bxg7 {[%emt 0:00:05]} Kxg7 {[%emt 0:00:03]} 17. Ne2 {[%emt 0:00:11]} Nc6 {[%emt 0:00:29]} 18. a3 {[%emt 0:00:17]} a5 {[%emt 0:03:22]} 19. f4 {[%emt 0:01:10]} a4 {[%emt 0:00:23]} 20. Rf2 {[%emt 0:00:39]} Qd7 {[%emt 0:02:34]} 21. Rbf1 {[%emt 0:00:05]} Rab8 {[%emt 0:01:06]} 22. Nc3 {[%emt 0:00:27]} Nd4 {[%emt 0:00:16]} 23. Qd1 {[%emt 0:00:56]} Ra8 {[%emt 0:01:23]} 24. Nd5 {[%emt 0:00:32]} Rae8 {[%emt 0:03:18]} 25. Nb6 {[%emt 0:00:47]} Qc6 {[%emt 0:00:05]} 26. Nxa4 {[%emt 0:00:18]} b5 {[%emt 0:01:37]} 27. cxb5 {[%emt 0:01:24]} Qxb5 {[%emt 0:00:07]} 28. Nc3 {[%emt 0:00:04]} Qc6 {[%emt 0:00:01]} 29. b4 {[%emt 0:00:09]} cxb4 {[%emt 0:00:10]} 30. Ne2 {[%emt 0:00:26]} Nc2 {[%emt 0:01:50]} 31. Qc1 {[%emt 0:02:06]} bxa3 {[%emt 0:00:28]} 32. Ng1 {[%emt 0:00:33]} Rc8 {[%emt 0:00:17]} 33. Kh3 {[%emt 0:02:23]} Qa4 {[%emt 0:00:31]} 34. Rd2 {[%emt 0:04:38]} a2 {[%emt 0:00:20]} 35. Qb2+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:02]} 36. Ra1 {[%emt 0:00:40]} Nxa1 {[%emt 0:00:07]} 37. Qxa1 {[%emt 0:00:04]} Rc2 {[%emt 0:00:07]} 38. Nf3 {[%emt 0:00:19]} Rxd2 {[%emt 0:00:07]} 39. Nxd2 {[%emt 0:00:02]} Qc2 {[%emt 0:00:04]} 40. Nc4 {[%emt 0:00:58]} Qb1 {[%emt 0:00:10]} 41. Qxb1 {[%emt 0:00:41]} axb1=Q {[%emt 0:00:05]} 42. e5 {[%emt 0:00:02]} Qxd3 {[%emt 0:00:07]} 43. Nxd6 {[%emt 0:00:05]} exd6 {[%emt 0:00:03]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.22"]
[White "Libe, Sofonea"]
[Black "Beukes, Dante M"]
[Result "0-1"]
[WhiteElo "1509"]
[BlackElo "2206"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:05:34"]
[BlackClock "0:01:12"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:15]} 2. g3 {[%emt 0:00:12]} g6 {[%emt 0:00:35]} 3. Bg2 {[%emt 0:00:45]} Bg7 {[%emt 0:00:04]} 4. Nc3 {[%emt 0:00:07]} O-O {[%emt 0:00:05]} 5. e4 {[%emt 0:00:05]} d6 {[%emt 0:00:03]} 6. Nge2 {[%emt 0:00:02]} c5 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:04]} Nc6 {[%emt 0:00:02]} 8. Rb1 {[%emt 0:00:08]} Ne8 {[%emt 0:00:32]} 9. d3 {[%emt 0:00:15]} Nc7 {[%emt 0:00:48]} 10. Be3 {[%emt 0:01:23]} Ne6 {[%emt 0:00:39]} 11. Qd2 {[%emt 0:00:14]} Ned4 {[%emt 0:00:51]} 12. Bh6 {[%emt 0:01:57]} Bh3 {[%emt 0:05:11]} 13. Nxd4 {[%emt 0:00:25]} Nxd4 {[%emt 0:00:22]} 14. f3 {[%emt 0:00:48]} Bxg2 {[%emt 0:00:49]} 15. Kxg2 {[%emt 0:00:05]} a6 {[%emt 0:01:26]} 16. Bxg7 {[%emt 0:00:05]} Kxg7 {[%emt 0:00:03]} 17. Ne2 {[%emt 0:00:11]} Nc6 {[%emt 0:00:29]} 18. a3 {[%emt 0:00:17]} a5 {[%emt 0:03:22]} 19. f4 {[%emt 0:01:10]} a4 {[%emt 0:00:23]} 20. Rf2 {[%emt 0:00:39]} Qd7 {[%emt 0:02:34]} 21. Rbf1 {[%emt 0:00:05]} Rab8 {[%emt 0:01:06]} 22. Nc3 {[%emt 0:00:27]} Nd4 {[%emt 0:00:16]} 23. Qd1 {[%emt 0:00:56]} Ra8 {[%emt 0:01:23]} 24. Nd5 {[%emt 0:00:32]} Rae8 {[%emt 0:03:18]} 25. Nb6 {[%emt 0:00:47]} Qc6 {[%emt 0:00:05]} 26. Nxa4 {[%emt 0:00:18]} b5 {[%emt 0:01:37]} 27. cxb5 {[%emt 0:01:24]} Qxb5 {[%emt 0:00:07]} 28. Nc3 {[%emt 0:00:04]} Qc6 {[%emt 0:00:01]} 29. b4 {[%emt 0:00:09]} cxb4 {[%emt 0:00:10]} 30. Ne2 {[%emt 0:00:26]} Nc2 {[%emt 0:01:50]} 31. Qc1 {[%emt 0:02:06]} bxa3 {[%emt 0:00:28]} 32. Ng1 {[%emt 0:00:33]} Rc8 {[%emt 0:00:17]} 33. Kh3 {[%emt 0:02:23]} Qa4 {[%emt 0:00:31]} 34. Rd2 {[%emt 0:04:38]} a2 {[%emt 0:00:20]} 35. Qb2+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:02]} 36. Ra1 {[%emt 0:00:40]} Nxa1 {[%emt 0:00:07]} 37. Qxa1 {[%emt 0:00:04]} Rc2 {[%emt 0:00:07]} 38. Nf3 {[%emt 0:00:19]} Rxd2 {[%emt 0:00:07]} 39. Nxd2 {[%emt 0:00:02]} Qc2 {[%emt 0:00:04]} 40. Nc4 {[%emt 0:00:58]} Qb1 {[%emt 0:00:10]} 41. Qxb1 {[%emt 0:00:41]} axb1=Q {[%emt 0:00:05]} 42. e5 {[%emt 0:00:02]} Qxd3 {[%emt 0:00:07]} 43. Nxd6 {[%emt 0:00:05]} exd6 {[%emt 0:00:03] #R} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.23"]
[White "Calicoca, Wilton Inacio"]
[Black "El Kouri, Abdallah lamine"]
[Result "1-0"]
[WhiteElo "2122"]
[PlyCount "93"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:17:32"]
[BlackClock "0:17:42"]

1. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:13]} 2. d4 {[%emt 0:00:05]} c6 {[%emt 0:00:07]} 3. c4 {[%emt 0:00:12]} Qc7 {[%emt 0:00:08]} 4. Nc3 {[%emt 0:00:04]} Nd7 {[%emt 0:00:20]} 5. Nf3 {[%emt 0:00:06]} Ngf6 {[%emt 0:00:05]} 6. Bd3 {[%emt 0:00:08]} e6 {[%emt 0:00:07]} 7. O-O {[%emt 0:00:09]} Be7 {[%emt 0:00:07]} 8. b3 {[%emt 0:00:07]} a6 {[%emt 0:00:19]} 9. Bb2 {[%emt 0:00:07]} O-O {[%emt 0:00:15]} 10. Rc1 {[%emt 0:00:04]} b5 {[%emt 0:00:19]} 11. cxb5 {[%emt 0:00:11]} axb5 {[%emt 0:00:32]} 12. Nxb5 {[%emt 0:00:11]} Qb6 {[%emt 0:00:16]} 13. Nc3 {[%emt 0:02:52]} c5 {[%emt 0:00:14]} 14. e5 {[%emt 0:00:23]} Ne8 {[%emt 0:00:26]} 15. exd6 {[%emt 0:00:17]} Bxd6 {[%emt 0:00:21]} 16. Ne4 {[%emt 0:01:18]} Be7 {[%emt 0:00:12]} 17. dxc5 {[%emt 0:00:17]} Nxc5 {[%emt 0:00:12]} 18. Bd4 {[%emt 0:00:07]} Ra5 {[%emt 0:01:45]} 19. a3 {[%emt 0:02:58]} Qxb3 {[%emt 0:00:40]} 20. Bxc5 {[%emt 0:00:15]} Qxd1 {[%emt 0:00:21]} 21. Rfxd1 {[%emt 0:00:05]} Bxc5 {[%emt 0:00:16]} 22. Rxc5 {[%emt 0:00:06]} Ra8 {[%emt 0:00:34]} 23. a4 {[%emt 0:00:12]} Bb7 {[%emt 0:00:08]} 24. a5 {[%emt 0:00:08]} Ba6 {[%emt 0:00:28]} 25. Bxa6 {[%emt 0:00:13]} Rxa6 {[%emt 0:00:05]} 26. Rd8 {[%emt 0:00:07]} f5 {[%emt 0:00:34]} 27. Ned2 {[%emt 0:01:14]} h6 {[%emt 0:00:41]} 28. Rcc8 {[%emt 0:00:16]} Kf7 {[%emt 0:00:26]} 29. Ne5+ {[%emt 0:00:10]} Kf6 {[%emt 0:00:30]} 30. Nd7+ {[%emt 0:00:11]} Ke7 {[%emt 0:00:15]} 31. Nxf8 {[%emt 0:00:04]} Nd6 {[%emt 0:00:20]} 32. Rd7+ {[%emt 0:00:25]} Kf6 {[%emt 0:00:11]} 33. f4 {[%emt 0:00:03]} Nxc8 {[%emt 0:00:09]} 34. Nc4 {[%emt 0:00:17]} Rc6 {[%emt 0:00:13]} 35. Rd4 {[%emt 0:00:14]} Kf7 {[%emt 0:00:27]} 36. Nd7 {[%emt 0:00:07]} Ne7 {[%emt 0:00:29]} 37. Nde5+ {[%emt 0:00:10]} Kf6 {[%emt 0:00:11]} 38. Nxc6 {[%emt 0:00:16]} Nxc6 {[%emt 0:00:06]} 39. Rd6 {[%emt 0:00:03]} Ne7 {[%emt 0:01:02]} 40. a6 {[%emt 0:00:09]} g5 {[%emt 0:00:19]} 41. a7 {[%emt 0:00:06]} Nc8 {[%emt 0:00:05]} 42. a8=Q {[%emt 0:00:07]} Nxd6 {[%emt 0:00:07]} 43. Qf8+ {[%emt 0:00:09]} Kg6 {[%emt 0:00:05]} 44. Ne5+ {[%emt 0:00:10]} Kh5 {[%emt 0:00:07]} 45. Qxd6 {[%emt 0:00:07]} g4 {[%emt 0:00:05]} 46. Qxe6 {[%emt 0:00:06]} Kh4 {[%emt 0:00:06]} 47. Qxh6# {[%emt 0:00:12]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "1.24"]
[White "Maazouzi, Youssef"]
[Black "Cambando, Jose"]
[Result "0-1"]
[BlackElo "2128"]
[PlyCount "68"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[TimeControl "1500+10"]
[WhiteClock "0:01:12"]
[BlackClock "0:06:48"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:11]} 2. Nf3 {[%emt 0:00:04]} d6 {[%emt 0:00:06]} 3. d4 {[%emt 0:00:04]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:03]} a6 {[%emt 0:00:04]} 6. Be3 {[%emt 0:00:13]} Nc6 {[%emt 0:00:13]} 7. f3 {[%emt 0:00:24]} e6 {[%emt 0:01:09]} 8. Qd2 {[%emt 0:01:13]} d5 {[%emt 0:01:44]} 9. exd5 {[%emt 0:04:13]} Nxd5 {[%emt 0:00:19]} 10. Nxd5 {[%emt 0:00:10]} Qxd5 {[%emt 0:00:08]} 11. Nxc6 {[%emt 0:01:35]} Qxc6 {[%emt 0:01:44]} 12. O-O-O {[%emt 0:00:12]} Be7 {[%emt 0:00:05]} 13. Kb1 {[%emt 0:00:13]} e5 {[%emt 0:00:30]} 14. Bd3 {[%emt 0:01:33]} f5 {[%emt 0:00:10]} 15. Bg5 {[%emt 0:00:56]} Bxg5 {[%emt 0:04:06]} 16. Qxg5 {[%emt 0:00:05]} O-O {[%emt 0:00:02]} 17. Rhe1 {[%emt 0:02:21]} Qc7 {[%emt 0:01:23]} 18. h4 {[%emt 0:00:36]} Be6 {[%emt 0:00:22]} 19. Re2 {[%emt 0:01:23]} Rae8 {[%emt 0:00:16]} 20. Rde1 {[%emt 0:00:14]} b5 {[%emt 0:00:19]} 21. b3 {[%emt 0:00:46]} Bd7 {[%emt 0:03:01]} 22. Qg3 {[%emt 0:02:13]} f4 {[%emt 0:00:05]} 23. Qg5 {[%emt 0:00:49]} h6 {[%emt 0:01:35]} 24. Qg6 {[%emt 0:00:23]} Rf6 {[%emt 0:00:24]} 25. Qh7+ {[%emt 0:01:29]} Kf7 {[%emt 0:02:00]} 26. h5 {[%emt 0:00:28]} Ree6 {[%emt 0:00:04]} 27. Bg6+ {[%emt 0:01:35]} Rxg6 {[%emt 0:00:04]} 28. hxg6+ {[%emt 0:00:04]} Kf6 {[%emt 0:00:03]} 29. Rh1 {[%emt 0:02:21]} Re7 {[%emt 0:02:41]} 30. Rh2 {[%emt 0:01:08]} Bf5 {[%emt 0:00:29]} 31. Rxh6 {[%emt 0:01:32]} gxh6 {[%emt 0:00:09]} 32. Qh8+ {[%emt 0:00:41]} Kxg6 {[%emt 0:00:06]} 33. Re1 {[%emt 0:00:18]} Qxc2+ {[%emt 0:00:10]} 34. Ka1 {[%emt 0:00:07]} Qc3# {[%emt 0:00:04]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.1"]
[White "Oatlhotse, Providence"]
[Black "Adly, Ahmed"]
[Result "0-1"]
[ECO "D79"]
[WhiteElo "2190"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,94,0,0,0,0,0,0,0,0,0,11,0,38,29,61,52,61,63,59,54,64,56,59,58,56,63,69,37,39,27,29,30,40,36,33,39,35,4,0,0,0,-4,-4,-53,-52,-47,-46,-47,-53,-47,-48,-61,-61,-61,-61,-75,-60,-62,-71,-56,-19,-19,-23,-23,-16,-17,-21,-16,-8,-8,-8,-28,-28,-556,-135]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. O-O Bg7 5. c4 c6 6. cxd5 cxd5 7. Ne5 O-O 8. d4 Ng4 9. Nxg4 Bxg4 10. h3 Be6 11. Nc3 Nc6 12. Be3 {D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} Qd7 13. Kh2 {[#]} Rac8 $146 ({Predecessor:} 13... b5 14. Nxb5 Rab8 15. Nc3 Rxb2 16. Na4 Rb4 17. Nc5 Qd6 18. Bf4 Qd8 19. Nxe6 fxe6 {1-0 (59) Shamsi,M (2217)-Bouget,A (2238) Chess.com INT 2020}) 14. Qd2 {The position is equal.} Na5 15. b3 b6 16. Rac1 Rc6 17. Bf4 Rfc8 18. Rfd1 f5 19. e3 {Black must now prevent Bf1.} a6 20. Bf1 b5 21. Ne2 Nb7 22. Rxc6 Rxc6 23. Rc1 Nd6 24. f3 Nf7 25. h4 h6 26. Rxc6 Qxc6 27. Qc1 Bd7 28. Qxc6 Bxc6 29. Nc1 e5 30. dxe5 Nxe5 31. Be2 d4 32. Bxe5 Bxe5 $11 {[%mdl 4096] Endgame KBB-KBN} 33. Nd3 Bf6 34. exd4 Bxd4 35. Nb4 Bb7 36. a4 bxa4 37. bxa4 a5 38. Bc4+ Kf8 39. Nd5 Bc6 40. Bb3 g5 41. hxg5 hxg5 42. Kg2 Ke8 {[#] Threatens to win with ...Kd7.} 43. Kf1 $1 Kd7 {aiming for ...Kd6.} 44. Ke2 Kd6 45. Ne3 Bd7 46. Kd3 Kc5 47. Ke2 $2 {[%mdl 8192] [#]} (47. f4 $11 {and White has nothing to worry.}) 47... Be5 $2 {Weighted Error Value: White=0.29/Black=0.05} (47... Bxe3 $19 {has better winning chances.} 48. Kxe3 Kb4) 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.2"]
[White "Amin, Bassem"]
[Black "Miguel, Sergio"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2693"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,131,0,15,0,34,-13,-27,-39,0,0,0,0,0,0,0,-2,21,4,15,28,21,0,0,0,0,0,0,0,78,77,77,77,77,77,77,77,89,77,82,82,96,96,98,96,104,96,96,96,109,96,96,96,96,96,96,96,96,69,96,96,96,96,96,96,96,96,96,69,69,69,69,75,780,599,1105,1215,941,934,29968,29970,29970,29970,29970,29970,29971,29972,29973,29974,29975,29976,29978,29975,29976,29976,29976,29977,29977,29978,29991,29983,29993,29980,29992,29980,29992,29979,29979,29980,29980,29981,29981,29982,29986,29987]} 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. O-O O-O 6. b3 c5 7. Bb2 d4 8. e3 Nc6 9. exd4 cxd4 10. Re1 Qb6 11. d3 {A14: English Opening: 1...e6 with b3 by White.} Rd8 12. a3 a5 $1 {[#]} 13. Ne5 $146 {Black has an edge.} ({Predecessor:} 13. Nbd2 Nd7 14. Qc2 Nc5 15. Rab1 Qc7 16. Ne4 Na6 17. Qe2 h6 18. Bc1 f5 19. Ned2 Nc5 20. Nf1 g5 21. Bd2 Bf6 22. h3 Qg7 23. b4 Na4 {0-1 (23) Yagiz,Y (1872)-Murden,C (2349) ICCF email 2007}) 13... Nxe5 14. Rxe5 Bd7 15. Nd2 Bc6 16. Nf3 Nd7 17. Bxd4 Bxf3 (17... Nc5 {is more complex.} 18. Be3 Bd6 19. Rg5 f6 20. Rh5 g6) 18. Bxb6 Bxd1 19. Bxd8 Rxd8 20. Rxa5 Bxb3 {White must now prevent ...Nc5.} 21. Rb1 b6 22. Ra7 Bc2 {[%mdl 64] [#] Double Attack} 23. Rc1 Bxd3 (23... Bb3 $11) 24. Rd1 $16 Bxc4 25. Rdxd7 Rxd7 26. Rxd7 Bxa3 {[%mdl 4096] Endgame KRB-KB} 27. Rb7 b5 28. Bc6 g6 29. Bxb5 Bxb5 30. Rxb5 {KR-KB} h5 31. Kg2 Kg7 32. Kf3 Be7 33. Ke4 Bf6 34. Kd3 g5 35. h3 Kg6 36. g4 hxg4 37. hxg4 Be7 38. f3 Bd6 39. Kc4 Bf4 40. Rb6 Kf6 41. Rb7 Be3 42. Kb5 Kg6 43. Kc6 f5 $1 44. Rb3 Bf2 45. Rb2 Bd4 {[%mdl 8192] [#] Loses the game.} (45... Bg3 $16) 46. Re2 $1 $18 {[%cal Re2e6]} Kf6 47. Kd6 e5 48. Kd5 fxg4 49. fxg4 {White mates.} Bc3 50. Rc2 Bd4 51. Ke4 Kg7 52. Kf5 Be3 53. Kxe5 Bf4+ 54. Kf5 Be3 55. Rh2 Bf4 56. Rh5 Kg8 57. Kf6 Be3 58. Rh3 Bf4 59. Rd3 Bc1 60. Rd7 Bf4 61. Rb7 Bd2 62. Rg7+ Kf8 63. Rd7 {[%cal Rd7d8]} Ba5 64. Kxg5 Bc3 65. Kg6 Be5 66. g5 {Weighted Error Value: White=0.04/Black=0.18} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.3"]
[White "Ortega Amarelle, Mariano"]
[Black "Paiva, Donaldo"]
[Result "1-0"]
[ECO "D83"]
[WhiteElo "2463"]
[BlackElo "2230"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,63,4,26,33,25,37,37,38,27,31,24,25,91,88,81,38,67,80,65,31,67,8,4,0,63,37,104,110,206,191,192,195,436,431,636,640,635,620,865,855,801,583,877,592,1197,1110,1204,1181,1197,1190]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. Rc1 Be6 9. Nd4 {D83: Grünfeld: 4 Bf4 Bg7 5 e3 0-0.} Nc6 10. Nxc6 bxc6 11. Qa4 $1 {[%cal Ra4a5] White is slightly better.} Qxc5 {[%cal Rd5c4]} 12. b4 Qb6 13. c5 Qb7 (13... Qd8 $1 $11) 14. Ba6 $16 Qd7 15. Be5 {[#]} Ng4 $146 ({Predecessor:} 15... Bf5 16. Qd1 Qe6 17. Qd4 Rab8 18. a3 g5 19. O-O Rfd8 20. f4 h6 21. Ne2 Nh5 22. Bxg7 Nxg7 {1-0 (28) Inkiov,V (2490)-Maris,I (2295) Athens 1988}) 16. Bxg7 Kxg7 17. h3 $36 {[%mdl 2048] White has good play.} Ne5 18. Rd1 (18. Ne2 $14) 18... Qc7 $1 $11 19. Ne2 Nc4 (19... Bc8 $11) 20. Qc2 $14 Qe5 (20... Bc8 $14 21. Bxc4 dxc4) 21. Nd4 $16 Qg5 (21... Qf6 $16 {was worth a try.}) 22. Nxe6+ $18 fxe6 23. O-O ({And not} 23. Bxc4 Qxg2 24. Rf1 (24. Qb2+ Kg8 $17) 24... dxc4 $15) 23... Ne5 $2 (23... Qe5 24. Bxc4 dxc4 25. Qxc4 a5) 24. f4 {[%mdl 64] [#] Double Attack. White is clearly winning.} Qg3 (24... Qf6 $142 25. fxe5 Qxe5) 25. Qc3 {[%mdl 64] Pin} Rf5 26. fxe5 Qxe5 27. Qxe5+ Rxe5 28. Rf3 Rb8 29. a3 Rf5 30. Rxf5 exf5 31. b5 {[%mdl 64] [#] Promotion} cxb5 32. c6 {Weighted Error Value: White=0.29/Black=0.57} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.4"]
[White "Oliveira, Luciano"]
[Black "Bellahcene, Bilel"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2115"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,82,31,26,25,0,7,0,0,-1,-3,-6,0,0,0,-4,0,-9,-9,-9,-9,-43,0,0,0,-48,-58,-54,-56,-52,-47,-182,-98,-114,-107,-97,-97,-114,-103,-1059,-1034,-1043,-1034,-936,-570,-568,-556,-887,-904,-900,-894,-847,-833,-785,-745,-1443,-871,-1355,-839,-995,-956,-1619,-1553,-3912,-2699,-29980,-29981,-29981,-29982,-29982,-29983,-29981,-29982]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 O-O 7. e3 Bf5 {7...h6 is the modern continuation. D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. Bd3 Bxd3 9. Qxd3 c6 {The position is equal.} 10. O-O Nbd7 11. Ne5 {[#]} Be7 $146 ({Predecessor:} 11... Qe8 12. Nxd7 Nxd7 13. a3 Bxc3 14. bxc3 Qe6 15. Rab1 b5 16. Rfe1 Rfe8 17. f3 f5 {0-1 (56) Noelck,U-Pamperin,G (1749) Mecklenburg VP 2010}) 12. Nxd7 Nxd7 13. Bf4 Re8 14. h3 a5 15. Rfc1 Nb6 16. Nb5 Rc8 17. Na7 Ra8 $36 {[%cal Bc8a8,Ba8a6,Ba6g6][%mdl 2080] Black has some pressure.} 18. Nb5 $1 {[%cal Rb5c7]} cxb5 19. Bc7 Qd7 20. Bxb6 {Threatens to win with Rc7.} Bd6 21. Qd2 {[#]} (21. b3 $1 $15) 21... b4 (21... Ra6 $1 $19 {...Bb4 is the strong threat.} 22. Bxa5 Qe7) 22. a3 $17 Ra6 23. Bc5 Bb8 24. axb4 {[#]} Rg6 $1 {aiming for ...Qxh3.} 25. bxa5 $2 {[%mdl 8192]} (25. Kf1 $17 Qc7 26. f4 (26. Rxa5 $2 Qh2 $19)) 25... Qxh3 $1 $19 {[%csl Gg6][%cal Rh3g2]} 26. Kf1 Rxg2 27. Ke2 Qf5 28. Rf1 Bg3 29. Ke1 {[#]} Bxf2+ $1 {[%mdl 576] Deflection} 30. Rxf2 Rg1+ 31. Ke2 Qg4+ 32. Kd3 Rxa1 33. Kc2 Qe4+ 34. Kb3 h5 {And now ...Qb1 would win.} 35. Kb4 Ra8 36. Bb6 Qe7+ 37. Kb3 Qe8 {( -> ...Qa4+)} 38. Qd3 Qa4+ {Black mates.} 39. Kc3 Rc8+ 40. Bc5 Qxa5+ 41. Kc2 Qa4+ {Accuracy: White = 47%, Black = 79%.} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.5"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Meftahi, Houssem"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2422"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,14,33,28,34,41,46,46,49,45,58,50,44,39,76,76,82,74,71,64,91,62,66,60,63,60,113,89,124,118,127,125,119,117,117,77,114,95,91,92,81,91,87,91,108,100,116,111,230,242,232,236,302,285,314,337,366,316,306,228,344,360,347,214,1189,1217,1839,1834,29998,29999]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. d3 d6 6. e5 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Ne7 7. exd6 Ng6 {[#]} 8. Nbd2 $146 {White is slightly better.} ({Predecessor:} 8. h4 h5 9. Bg5 f6 10. Qe2 Bxd6 11. Qe4 Ne7 12. Nbd2 fxg5 13. hxg5 e5 14. g4 Bxg4 15. Qxg4 hxg4 16. Rxh8+ {0-1 (33) Lu,S (2514)-Yu,Y (2615) Beijing 2012}) 8... Bxd6 9. Nc4 Bc7 10. Be3 Qd5 11. Qe2 Nf4 12. Bxf4 Bxf4 13. O-O O-O 14. Rfe1 f6 15. Qe4 Bc7 16. Nfd2 e5 17. Ne3 Qf7 (17... Qxe4 $14 18. Nxe4 Rb8) 18. Nb3 Rb8 19. Qxc6 Rb6 20. Qxc5 Bd6 21. Qc4 Be6 22. Qh4 f5 23. Nc4 Be7 24. Qh3 Bxc4 25. dxc4 e4 26. c5 Rh6 27. Qe3 Qh5 28. h3 Kh8 (28... Rg6 $16 {keeps fighting.} 29. Kh2 Bg5) 29. Rad1 $18 Bg5 30. Qe2 Qg6 31. Rd6 Bf6 {intending ...Rxh3.} 32. Qe3 Re8 33. f4 Qf7 34. c3 Qc4 (34... g5 {might work better.} 35. fxg5 f4 36. Qxf4 {[%mdl 64] Pin} Bd4+ 37. Rxd4 (37. Nxd4 Qxf4 38. gxh6 Rg8 $16) 37... Qxf4 38. gxh6 Qxh6 39. Rexe4 Rg8) 35. Red1 Rg6 36. c6 Qa4 $2 {[#]} (36... Be7 37. R6d5 Qxc6 38. Rxf5 (38. Qxa7 Bh4 $16) 38... Bd6) 37. c7 Be7 38. Rd8 Rc6 39. Rxe8+ {Weighted Error Value: White=0.13/Black=0.38} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.6"]
[White "Abdelazeez, Mohamed Abdalla"]
[Black "Kayonde, Andrew"]
[Result "0-1"]
[ECO "D44"]
[WhiteElo "2214"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,78,51,33,16,-64,-64,-184,-191,-253,-241,-323,-321,-310,-225,-260,-275,-313,-304,-316,-293,-371,-335,-379,-377,-386,-373,-388,-382,-404,-406,-505,-425,-586,-479,-545,-493,-654,-536,-773,-755,-802,-808,-806,-807,-1060,-1067,-1564,-1243,-29980,-29981,-29989,-2910,-29983,-29983,-29990,-29991]} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5 hxg5 10. Bxg5 Nbd7 11. g3 Bb7 12. Bg2 Qb6 13. exf6 O-O-O {D44: Semi-Slav: Botvinnik System.} 14. a4 ({White should try} 14. O-O $11) 14... c5 $15 15. d5 (15. a5 $15 Qa6 16. Bxb7+ Qxb7 17. O-O) 15... b4 $1 $19 {[#] Black is clearly better.} 16. a5 $146 {[#]} (16. Ne2 {was called for.}) ({Predecessor:} 16. Ne2 Ne5 17. a5 Qb5 18. O-O Bxd5 19. Qa4 Qxa4 20. Rxa4 Nf3+ 21. Bxf3 Bxf3 22. Nf4 {0-1 (37) Weiss,A (2183)-Yang,D (2416) Philadelphia 2011}) 16... Qa6 $1 17. O-O bxc3 18. bxc3 Nb8 19. Rb1 Bxd5 20. Bf4 {[#]} Bd6 21. Bxd5 Bxf4 ({Weaker is} 21... exd5 22. Qxd5 Bxf4 23. Qf5+ Qe6 24. Qxf4 $17) 22. Qf3 exd5 23. Qxf4 Qd6 24. Qf3 Na6 25. Rfe1 Rhe8 26. Qg4+ Qd7 27. Qg5 Re6 28. Re3 Rxe3 29. Qxe3 Qf5 30. Rb5 Qxf6 31. h4 Qc6 32. Rb1 d4 33. Qf4 Qd5 34. Qf6 Nc7 35. a6 d3 36. h5 d2 37. Rd1 Qxh5 (37... Re8 $142 38. Kh2 Qxh5+ 39. Kg2 Re1 40. g4 Qxg4+ {[%mdl 64] Double Attack} 41. Kh2 Rxd1 42. Qf3 Qh4+ 43. Kg2 Rh1 44. Qf5+ Kb8 45. f4 Rh2+ 46. Kf3 d1=Q+ 47. Ke4 Qe2#) 38. f3 Rh8 39. Kf2 Qh2+ {Black took control after the opening.  Weighted Error Value: White=0.78/Black=0.15} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.7"]
[White "Zaibi, Amir"]
[Black "Calicoca, Wilton Inacio"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2381"]
[BlackElo "2122"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,115,59,52,58,43,46,33,33,27,27,27,29,34,51,18,51,13,48,42,43,41,45,23,37,40,69,29,25,27,29,10,10,10,8,8,10,10,4,0,0,0,39,32,81,81,81,81,81,81,81,81,81,-8,81,81,81,81,81,34,59,59,59,59,872,860,973,732,5650,141,141,141,141,81,81,8,81,81,186,186,29972,29973,29972,29972,29973,29975,29975,29977,29977,29978,29978,29979,29979,29980,29980,29980,29979,29980,29980,29981]} 1. c4 c5 2. Nc3 b6 3. Nf3 Bb7 4. e4 d6 5. d4 cxd4 6. Nxd4 e6 7. Be2 Nf6 8. f3 Be7 9. Be3 O-O 10. O-O Nc6 {A31: Symmetrical English: 2 Nf3 Nf6 3 d4.} 11. Rc1 Rc8 {[#]} 12. Qa4 $146 ({Predecessor:} 12. Qd2 Rc7 13. Rfd1 Rd7 14. Kh1 Qa8 15. a3 Rfd8 16. Ncb5 Ne5 17. b4 Nc6 18. a4 {1-0 (49) Hakiki,K (2251)-Novita,A (2344) Jakarta 2011}) 12... Qd7 {White is slightly better.} 13. Rfd1 Nxd4 14. Bxd4 Qxa4 15. Nxa4 Rfd8 16. b3 Kf8 17. Kf2 Nd7 18. Be3 Nc5 19. Nc3 Bc6 20. Nb5 Bxb5 21. cxb5 Nd7 22. a4 Nc5 23. b4 Nxa4 {Black wants to play ...Nc3.} 24. Rxc8 Rxc8 25. Ra1 Nc3 26. Rxa7 d5 27. Bxb6 {aiming for Bc5!} Bxb4 28. Rc7 Rxc7 29. Bxc7 Nxe2 (29... Ke7 {seems wilder.} 30. Bd3 Bc5+ 31. Ke1 Bd4 32. Kd2 dxe4 33. fxe4 Na4) 30. Kxe2 $11 {[%mdl 4096] Endgame Black must now prevent b6. KB-KB} Ke8 31. exd5 exd5 32. Kd3 Bc5 33. Be5 $1 g6 34. Bd4 Bd6 35. Ba7 ({Better is} 35. Be3 $16) 35... Kd7 (35... Bxh2 $11 36. Kc3 Kd7) 36. Kd4 $16 Bxh2 {Strongly threatening ...Bg1+.} 37. Kxd5 {And now Bd4 would win.} Kc7 38. Bf2 h5 39. Ke4 Bd6 40. Be3 Kd7 $2 {[%mdl 8192]} (40... Be7 $14) 41. Kd5 $18 Bb8 42. Bd4 g5 43. Bf6 $2 (43. b6 $18 {is the precise move to win.} Bg3 44. Be5) 43... g4 $16 44. fxg4 hxg4 {[#]} 45. Be5 (45. Bd4 $142 $1) 45... Ba7 46. Bf4 (46. Ke4 $16) 46... f6 (46... Bf2 $11 {remains equal.}) 47. Bd2 Bb8 {[#]} (47... Bf2 $16 48. Bc3 Bh4) 48. Bc3 $1 $18 {[%cal Rc3f6]} Ke7 (48... f5 $18) 49. b6 {White mates.} Bf4 50. Bd4 Bb8 51. b7 Kf7 52. Bc5 Kg6 53. Bd6 Ba7 54. Ke4 Kg5 55. g3 f5+ 56. Kd5 Kf6 57. b8=Q Bxb8 58. Bxb8 {Weighted Error Value: White=0.30/Black=0.30} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.8"]
[White "Simoes, Joao"]
[Black "Silva, David"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2228"]
[BlackElo "2258"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,42,0,43,0,0,-8,54,50,55,62,58,1,45,33,31,29,61,49,76,76,76,66,75,66,62,52,58,53,61,52,58,55,54,41,40,-7,0,-17,-26,-45,-43,-54,-57,-113,-120,-107,-55,-73,-8,-58,-79,-77,-16,-64,0,-64,-56,-145,0,0,47,74,54,55,31,25,29,13,0,14,32,0,0,0,367,389,421]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6 7. Bh4 c6 {E73: King's Indian: Averbakh Variation without 6...c5.} 8. Qd2 (8. f4 $14) 8... e5 $11 9. d5 c5 (9... g5 $11 10. Bg3 cxd5 11. cxd5 Nxe4 12. Nxe4 f5) 10. h3 {[#]} a6 $146 ({Predecessor:} 10... Kh7 11. Nf3 Na6 12. O-O Nc7 13. Ne1 Bd7 14. Nc2 Nce8 15. Rab1 Nxe4 16. Nxe4 Qxh4 {1-0 (52) Krzywina,M (1967)-Kempinski,T (2165) Gdansk 2003}) 11. g4 b5 12. Qc2 (12. cxb5 $14 axb5 13. Bxb5) 12... Qa5 13. Kf1 {[%cal Rc4b5]} b4 14. Nd1 $1 b3 15. Qc3 Qxc3 16. Nxc3 bxa2 17. Rxa2 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8g6,Bg6f4][%mdl 32]} 18. Nf3 Rb8 19. Nd2 Re8 20. Bd3 Nf8 21. Ke2 g5 22. Bg3 Ng6 23. Bc2 Nf4+ 24. Kd1 {[#]} Nxh3 $1 {[%mdl 512]} 25. f3 (25. Rxh3 Bxg4+) 25... Nf4 26. Ba4 Re7 27. Kc2 h5 28. Bxf4 (28. gxh5 $1 $15 N4xh5 29. Bf2) 28... exf4 $17 29. gxh5 g4 ({Black should try} 29... Kh7 $17 30. Nb3 g4) 30. h6 $15 Bh8 (30... Bf8 $17) 31. Rh4 Kh7 32. Ra1 gxf3 (32... g3 $17) 33. Rxf4 Ng4 (33... Nh5 $15 34. Rxf3 Bg4) 34. Rxf3 ({Better is} 34. Nxf3 $11 Ne3+ 35. Kd3) 34... Bd4 $1 35. Re1 {[#]} ({White should play} 35. Nb3 $15) 35... f5 (35... Ne5 $1 $17 36. Rff1 Bh3) 36. b3 $11 f4 37. Ne2 $1 {[%cal Re2d4]} ({Reject} 37. Rxf4 Ne3+ 38. Rxe3 Bxe3 $15) 37... Ne3+ 38. Kd3 Ng2 {[%cal Rg2e1]} 39. Ref1 $36 {[%mdl 2048] Black is under pressure.} Be5 40. R3f2 Ne3 41. Rg1 Ng4 42. Rff1 Ne3 43. Rf2 Nf5 $2 {[%mdl 8192] [#]} (43... Ng4 $11 44. Rfg2 Ne3) 44. Nf3 $1 $18 ({Worse is} 44. exf5 Bxf5+ 45. Ne4 Bxe4+ 46. Kxe4 Bd4+ {[%mdl 64] Skewer} 47. Kf3 Re3+ 48. Kg2 (48. Kg4 $2 Rg8+ 49. Kxf4 Rf8+ 50. Kg4 Rxf2 $19) 48... f3+ {[%mdl 64] Double Attack} 49. Kh1 fxe2 $15) 44... Ng3 {[%mdl 32768] Accuracy: White = 71%, Black = 64%. . Loss on time!?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.9"]
[White "Beukes, Dante M"]
[Black "Wanyama, Harold"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2206"]
[BlackElo "2312"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,62,46,49,116,61,91,65,100,105,179,184,309,291,452,474,29984,1009,929,689,639,862,844,773,788,789,672,454,698,519,966,951,945,938,883,865,29973,29975,29989,29974,29991,29976,29987,5027,2160,1306,29999]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4 cxd4 7. cxd4 exd4 8. Bf4 Nge7 9. Bd6 O-O 10. Nbd2 {[%mdl 1024] White has compensation.} h6 {[#] B31: Sicilian: 2...Nc6 3 Bb5 g6.} (10... b6 $14) 11. h4 $146 (11. Bc4 $16) ({Predecessor:} 11. Nb3 a6 12. Bc4 b5 13. Bd5 Re8 14. Re1 a5 15. Rc1 Ra6 16. Nc5 Rb6 17. a3 Nb8 18. Nb7 Rxb7 19. Bxf7+ Kxf7 {1-0 (34) Oral,T (2531)-Jakubiec,A (2488) Germany 2000}) 11... Re8 12. h5 g5 {White is slightly better.} 13. Rc1 $1 a6 {[#]} (13... b6 $16) 14. Bc4 $1 $18 b5 {[#]} (14... Rf8 $142 15. Bb3 a5) 15. Bxf7+ $1 {[%mdl 512]} Kxf7 (15... Kh8 {was worth a try.} 16. Bxe8 Qxe8) 16. Qb3+ Kf8 {[#]} (16... Nd5 $18 17. exd5 Na5) 17. Rc5 (17. Nxg5 $142 $1 {[%mdl 512]} hxg5 18. f4 Bf6 19. fxg5 {[%mdl 64] Pin} Kg7 20. gxf6+ Kh8 21. Qf7 Nf5 22. Rxf5) 17... Bf6 18. e5 ({Inferior is} 18. Rf5 Kg7 $17) 18... Bh8 {[#]} 19. Nxg5 $1 {[%mdl 512]} hxg5 20. Ne4 Kg7 21. Nxg5 {White wants to mate with Qd3.} Rf8 22. Qg3 Kh6 (22... Qe8 $142 23. e6 Rf6 24. Nf7+ Ng6) 23. e6 dxe6 {[#]} (23... Bf6 $142 24. Nf7+ Rxf7 25. exf7 Qf8) 24. Rxc6 $1 {[%mdl 576] Pin} Qe8 {[#]} 25. Nxe6 $1 {[%mdl 512]} Bxe6 26. Bxe7 {[%mdl 64] Discovered Attack} Qf7 {[#]} 27. Re1 $1 Kh7 (27... Qxf2+ 28. Qxf2) 28. Rexe6 {[%csl Gc6][%cal Re6h6]} Bg7 29. h6 Be5 30. Qxe5 (30. Rxe5 $142 Qxf2+ 31. Qxf2 Rxf2 32. Kxf2 Re8 33. Bd6 Rxe5 34. Bxe5 d3 35. Bf4) 30... Qxf2+ 31. Kh2 {[%csl Gh6][%cal Re5g7]} Rf5 32. Qg7# {Black got outplayed after the opening.  Weighted Error Value: White=0.30/Black=1.22} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.10"]
[White "Bouzidi, Ahmed"]
[Black "Gohil, Mehul"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2163"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,86,-49,-39,-45,-44,-44,-31,-26,-33,-33,-32,-19,0,-44,40,54,46,53,59,79,67,59,56,27,33,48,25,35,41,0,0,0,0,0,0,0,0,0,0,-113,-116,-87,31,-135,-145,-397,-312,-1085,-1079,-992,-870,-5908,-4970,-29968,-29969,-29969,-29965,-29965,-6139,-29972,-29971,-6199,-6010]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 Kf8 9. h4 c5 10. Bd3 Nxd2 11. Kxd2 c4 12. Be2 {12.Bf1 is not played anymore.} Nc6 13. Rh3 b5 14. a3 {C12: French: Classical System: McCutcheon Variation.} a5 15. Rg3 Rg8 16. Qf4 {Black is slightly better.} Bd7 17. Bh5 {[%csl Gh5][%cal Rf4f7]} Be8 18. Ne2 {[#]} Rb8 $146 (18... Ra6 {looks sharper.} 19. Rf3 Qd7 20. Ke1 Ra8 21. Kf1 Rh8) ({Predecessor:} 18... Rh8 19. Qg4 Rh7 20. Nf4 Kg8 21. Bg6 fxg6 22. Qxe6+ Kh8 23. Rf3 Ne7 24. Nxd5 Nf5 {1-0 (39) Oechslein,R (2386)-Prystenski,A (2230) ICCF email 2014}) 19. Rf3 {[%cal Rh5f7]} (19. Qf3 {feels hotter.} Rb6 20. Bg4 Bd7 21. Nf4 Ne7 22. Bh5) 19... f5 (19... Qd7 $15) 20. Bxe8 $14 Kxe8 21. g4 g5 22. hxg5 hxg5 23. Qh2 f4 24. Rh3 Qe7 25. Rh7 Rg7 26. Rh8+ Kd7 27. Rxb8 (27. Rb1 $5 {[%cal Rh8b8]} Rb6 28. Qh6 $14) 27... Nxb8 28. Qh8 Kc7 29. Rb1 Rh7 30. Qg8 Rg7 31. Qh8 Rh7 32. Qf6 (32. Qg8 $11 Rg7 33. Qh8) 32... Qxf6 $17 33. exf6 {[%mdl 4096] Endgame KRN-KRN} Kc6 ({Black should play} 33... Nd7 $17 34. f7 Rxf7 35. Rxb5 Rh7 36. Rxa5 Rh2) 34. a4 $2 (34. Ng1 $14 {keeps the upper hand.}) 34... Nd7 35. Rxb5 {[%mdl 8192] Now White is beyond hope.} (35. axb5+ $17 Kb6 36. f7) 35... Nxf6 $19 {aiming for ...Ne4+.} 36. Rxa5 $2 (36. f3 Rh3 37. Rc5+ Kd6 38. Ng1) 36... Ne4+ {[%mdl 64] [#] Double Attack} 37. Kc1 f3 38. Ng1 Rh1 39. Ra6+ Kb7 40. Rxe6 Rxg1+ {[%mdl 64] [#] Double Attack} 41. Kb2 Nxf2 42. Rf6 Nd1+ 43. Ka3 f2 {Weighted Error Value: White=1.03/Black=0.19} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.11"]
[White "Cambando, Jose"]
[Black "Seddaoui, Yamine"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2128"]
[BlackElo "2127"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,96,60,68,9,20,3,0,0,58,47,57,62,59,77,70,69,81,76,70,12,108,-25,66,31,91,0,-7,-43,160,160,156,157,150,150,152,149,162,165,148,153,156,145,125,112,112,4,100,110,129,0,18,15,9,19,40,42,66,8,18,16,118,115,157,77,113,72,175,60,229,233,230,227,218,223,400,220,221,216,204,146,122,0,211,0,214]} 1. Nf3 d5 2. g3 f5 3. Bg2 e6 4. O-O c6 5. d3 Nf6 6. c4 Bd6 7. Nc3 O-O 8. Bg5 {A10: English Opening: Unusual Replies for Black.} (8. e4 $14 fxe4 9. dxe4 dxe4 10. Ng5) 8... h6 $11 {[#]} 9. Bf4 $146 ({Predecessor:} 9. Bxf6 Qxf6 10. Re1 d4 11. Na4 c5 12. e3 e5 13. exd4 exd4 14. Nd2 Nd7 15. Bd5+ Kh8 {1-0 (26) Hunhoff,S (1740)-Wessel,J (1813) Germany 2010}) 9... d4 10. Na4 g5 (10... b5 $11) 11. Bxd6 $14 Qxd6 12. c5 $1 {[%cal Rc5d6]} Qd8 13. Qb3 g4 14. Ne5 Qc7 15. Nc4 Na6 16. a3 (16. Rae1 $14) 16... Nd5 (16... Kh8 $11) 17. Qc2 ({White should try} 17. e4 $16) 17... e5 (17... f4 $11) 18. b4 Qe7 (18... f4 $14) 19. Nd6 (19. e3 $16) 19... Nac7 $11 20. Qd2 Rf6 (20... f4 $15 {keeps the upper hand.}) 21. e4 $36 {[%mdl 2048] Black is under strong pressure.} dxe3 22. fxe3 Ne8 23. e4 Ndc7 24. Nxf5 Bxf5 25. Rxf5 Ng7 26. Rxf6 Qxf6 27. Rf1 Qe6 28. Nc3 Rd8 29. Ne2 (29. Nd1 $16) 29... Nb5 (29... Qb3 $1 $11 {remains equal.}) 30. a4 Nd4 31. Nc1 (31. Nxd4 $16 Rxd4 32. a5) 31... Rf8 (31... Rd7 {feels hotter.} 32. a5 h5 33. Ne2 Qb3 34. Nxd4 Rxd4 35. Qg5 Qxb4 36. Qxe5 Rxd3 37. Kh1 Re3) 32. Rxf8+ Kxf8 33. Ne2 {[#] Threatens to win with Nxd4.} Nxe2+ 34. Qxe2 h5 35. d4 ({Better is} 35. Qf2+ $14 Kg8 36. a5) 35... exd4 36. Qf2+ Ke7 (36... Kg8 $11) 37. Qxd4 Ne8 38. b5 ({White should play} 38. e5) 38... Qb3 39. Bf1 Qf3 (39... Nf6 $16 {might work better.}) 40. Bc4 (40. a5 $18) 40... Qf6 $2 (40... Qa3 $1 $14) 41. e5 $18 Qf5 42. Bd3 Qe6 43. Be4 Kf7 $2 (43... Qh6 44. Kf2 Qe6) 44. bxc6 (44. a5 $142 {Black must now prevent a6.} a6 45. bxc6 bxc6 46. Bd3) 44... bxc6 45. Bd3 {[#] Hoping for Bc4!} Ke7 46. Bc4 Qf5 47. Bd3 (47. e6 $16) 47... Qe6 $1 48. Be4 Kf7 $1 {[%mdl 32768] Weighted Error Value: White=0.45/Black=0.40. Sensor Board Error (Ke4/e5)?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.12"]
[White "Amdouni, Zoubaier"]
[Black "Pascoal, Eduardo A"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2229"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,57,42,41,32,36,32,42,38,64,57,79,83,105,88,88,91,121,122,119,109,120,104,106,39,39,47,181,87,88,68,113,92,254,257,312,158,641,564,799,654,639,289,1384,1399,1309,1243,1143,1133,1412,1371]} 1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. e5 Nfd7 5. c3 c5 6. Ne2 {C01: French: Exchange Variation.} Nc6 7. a3 Qb6 {[%cal Rc5d4]} 8. b4 {White is slightly better.} cxd4 9. cxd4 f6 {[#]} 10. Be3 $146 ({Predecessor:} 10. f4 Be7 11. Nbc3 fxe5 12. Na4 Qc7 13. fxe5 O-O 14. Qc2 Ndxe5 15. dxe5 Qxe5 16. Bb2 {1-0 (37) Bugayev,V-Mendoza,B (1945) chess.com INT 2020}) 10... fxe5 11. dxe5 Qd8 12. f4 g6 13. O-O Bh6 14. Rf3 O-O 15. Rh3 Bg7 16. Ra2 (16. Bc2 $16) 16... a5 17. b5 $36 {[%mdl 2048] White is pushing.} Ne7 (17... Ncxe5 $1 $14 18. fxe5 Nxe5) 18. Nd4 (18. Nbc3 $18 {and White stays clearly on top.}) 18... Nc5 $16 19. Bc2 b6 20. Nd2 Nf5 $2 {[#]} (20... a4 $16) 21. Bxf5 $18 exf5 22. N2f3 (22. Nc6 $18 Qe8 23. Bxc5 bxc5 24. Nb3) 22... h5 $2 (22... Bd7 $16 23. Nc6 Bxc6 24. bxc6 Rc8) 23. Nc6 Qd7 24. Rd2 Ne4 25. Rxd5 (25. Nh4 $142 Nxd2 26. Nxg6) 25... Nc3 $2 {[#]} (25... Qe8 26. Rd8 Qf7) 26. Rxd7 {White is clearly winning.} Nxd1 27. Rxd1 Be6 28. Rd6 Bf7 29. Ne7+ {Weighted Error Value: White=0.48/Black=0.66} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.13"]
[White "Likoko, Elvis"]
[Black "Bongo Akanga Ndjila, Barthelemy"]
[Result "1/2-1/2"]
[ECO "E14"]
[WhiteElo "1646"]
[BlackElo "1803"]
[Annotator "NA RC"]
[PlyCount "147"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:32]} 2. c4 {[%emt 0:00:04]} b6 {[%emt 0:00:02]} 3. Nf3 {[%emt 0:00:45]} Bb7 {[%emt 0:00:03]} 4. e3 {[%emt 0:01:14]} e6 {[%emt 0:00:15]} 5. Be2 {[%emt 0:00:43]} Bb4+ {[%emt 0:00:06]} 6. Nbd2 {[%emt 0:00:09]} O-O {[%emt 0:01:06]} 7. O-O {[%emt 0:00:06]} a5 {[%emt 0:00:19]} 8. a3 {[%emt 0:00:24]} Be7 {[%emt 0:00:53]} 9. Qc2 {[%emt 0:00:21]} d5 {[%emt 0:00:13]} 10. b3 {[%emt 0:00:54]} Nbd7 {[%emt 0:00:25]} 11. Bb2 {[%emt 0:00:06]} Rc8 {[%emt 0:00:04]} 12. Rac1 {[%emt 0:00:32]} c5 {[%emt 0:00:02]} 13. Qb1 {[%emt 0:00:23]} Ne4 {[%emt 0:00:27]} 14. Rfd1 {[%emt 0:00:57]} Ndf6 {[%emt 0:00:45]} 15. Qa1 {[%emt 0:00:52]} Nxd2 {[%emt 0:01:06]} 16. Nxd2 {[%emt 0:00:09]} dxc4 {[%emt 0:03:31]} 17. dxc5 {[%emt 0:01:31]} bxc5 {[%emt 0:02:58]} 18. Nxc4 {[%emt 0:00:10]} Qc7 {[%emt 0:00:02]} 19. Be5 {[%emt 0:00:05]} Qc6 {[%emt 0:00:06]} 20. Bf3 {[%emt 0:00:14]} Qa6 {[%emt 0:00:02]} 21. Bxb7 {[%emt 0:00:13]} Qxb7 {[%emt 0:00:02]} 22. Nxa5 {[%emt 0:00:34]} Qb5 {[%emt 0:00:37]} 23. Nc4 {[%emt 0:07:47]} Qxb3 {[%emt 0:00:07]} 24. Rc3 {[%emt 0:00:38]} Qb7 {[%emt 0:02:08]} 25. Nd6 {[%emt 0:02:12]} Bxd6 {[%emt 0:00:19]} 26. Bxd6 {[%emt 0:00:09]} Ne4 {[%emt 0:01:31]} 27. Bxf8 {[%emt 0:01:16]} Nxc3 {[%emt 0:00:05]} 28. Qxc3 {[%emt 0:00:39]} Kxf8 {[%emt 0:00:09]} 29. h3 {[%emt 0:00:10]} c4 {[%emt 0:02:01]} 30. Rd4 {[%emt 0:00:33]} Qb3 {[%emt 0:00:16]} 31. Qxb3 {[%emt 0:00:35]} cxb3 {[%emt 0:00:04]} 32. Rb4 {[%emt 0:00:03]} Rc1+ {[%emt 0:00:06]} 33. Kh2 {[%emt 0:00:11]} Rb1 {[%emt 0:00:56]} 34. a4 {[%emt 0:00:06]} b2 {[%emt 0:00:02]} 35. a5 {[%emt 0:00:05]} Ra1 {[%emt 0:00:04]} 36. Rxb2 {[%emt 0:00:03]} Rxa5 {[%emt 0:00:02]} 37. Rb7 {[%emt 0:00:04]} h5 {[%emt 0:00:05]} 38. Kg3 {[%emt 0:00:08]} Rg5+ {[%emt 0:00:06]} 39. Kf3 {[%emt 0:00:11]} Rf5+ {[%emt 0:00:03]} 40. Kg3 {[%emt 0:00:04]} h4+ {[%emt 0:00:06]} 41. Kxh4 {[%emt 0:00:17]} Rxf2 {[%emt 0:00:02]} 42. Kg3 {[%emt 0:00:03]} Rf1 {[%emt 0:00:11]} 43. Ra7 {[%emt 0:00:17]} g6 {[%emt 0:00:07]} 44. Rb7 {[%emt 0:00:53]} Kg7 {[%emt 0:00:04]} 45. Rb4 {[%emt 0:00:19]} Kf8 {[%emt 0:01:25]} 46. Rb7 {[%emt 0:00:04]} Kg7 {[%emt 0:00:12]} 47. Rb4 {[%emt 0:00:04]} e5 {[%emt 0:00:58]} 48. Rb7 {[%emt 0:00:41]} Kh6 {[%emt 0:00:13]} 49. Re7 {[%emt 0:00:06]} f6 {[%emt 0:00:11]} 50. Re8 {[%emt 0:01:24]} Kg5 {[%emt 0:00:13]} 51. Rb8 {[%emt 0:01:38]} Kf5 {[%emt 0:00:10]} 52. Rb4 {[%emt 0:00:05]} g5 {[%emt 0:00:22]} 53. h4 {[%emt 0:00:33]} gxh4+ {[%emt 0:00:18]} 54. Rxh4 {[%emt 0:00:10]} Ke6 {[%emt 0:01:15]} 55. e4 {[%emt 0:00:40]} Kd6 {[%emt 0:00:10]} 56. Rh8 $11 {[%emt 0:01:23]} Rf4 {[%emt 0:00:29]} 57. Rh4 {[%emt 0:00:04]} Rf1 {[%emt 0:01:09]} 58. Rh8 {[%emt 0:00:03]} Kc5 {[%emt 0:01:23]} 59. Ra8 {[%emt 0:00:29]} Rf4 {[%emt 0:00:19]} 60. Ra4 {[%emt 0:00:13]} f5 {[%emt 0:00:09]} 61. Ra5+ {[%emt 0:00:10]} Kd4 {[%emt 0:00:02]} 62. exf5 {[%emt 0:00:03]} Rxf5 {[%emt 0:00:05]} 63. Kg4 {[%emt 0:00:03]} Rf1 {[%emt 0:00:07]} 64. Ra4+ {[%emt 0:00:19]} Ke3 {[%emt 0:00:13]} 65. Ra3+ {[%emt 0:00:03]} Kd4 {[%emt 0:00:22]} 66. Ra4+ {[%emt 0:00:02]} Kd5 {[%emt 0:00:19]} 67. Ra5+ {[%emt 0:00:03]} Ke6 {[%emt 0:00:08]} 68. Ra6+ {[%emt 0:00:02]} Ke7 {[%emt 0:01:00]} 69. Ra7+ {[%emt 0:00:06]} Kf6 {[%emt 0:00:13]} 70. Ra6+ {[%emt 0:00:02]} Kf7 {[%emt 0:00:02]} 71. Ra7+ {[%emt 0:00:02]} Ke6 {[%emt 0:01:35]} 72. Ra6+ {[%emt 0:00:04]} Kd5 {[%emt 0:00:20]} 73. Ra5+ {[%emt 0:00:02]} Kd4 {[%emt 0:00:02]} 74. Ra4+ {[%emt 0:00:02]} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.14"]
[White "Alberto, Manuel"]
[Black "Njoroge Martin"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2167"]
[BlackElo "1965"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,86,7,0,16,19,13,-14,0,0,0,-10,-2,-25,0,-49,-48,-39,-47,-76,-66,-95,-101,-103,-104,-103,-94,-94,-90,-200,-185,-193,-191,-189,-187,-206,-182,-204,-204,-203,-166,-167,-174,-216,-212,-212,-186,-431,-399,-159,-99,-114,-112,-90,-91,-80,-55,-227,0,0,0,0,48,54,37,0,39,-20,-13,-29,-22,-34,-22,-38,0,-8,-8,-1073,-1039]} 1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 Nc6 5. d4 Nge7 6. Na3 Bd7 {C02: French: Advance Variation.} 7. Nc2 Rc8 {[#]} 8. a3 $146 ({Predecessor:} 8. Bd3 c4 9. Be2 Nf5 10. O-O Be7 11. g4 Nh4 12. Nxh4 Bxh4 13. f4 Be7 14. f5 {½-½ (28) Tylecek,D (2165)-Raschun,G ICCF email 2017}) 8... Nf5 {The position is equal.} 9. b4 cxd4 10. cxd4 Qc7 11. Ra2 Be7 ({Reject} 11... Ncxd4 $6 12. Nfxd4 Qxe5+ 13. Be3 $16) 12. g4 Nh4 13. Nxh4 Bxh4 14. Be3 Ne7 15. Qd2 Ba4 {[%cal Ra4c2]} 16. Bd3 Bb3 $36 {[%mdl 2048] Black is in control.} 17. Rb2 {[#]} Bc4 18. O-O h5 19. f3 (19. gxh5 $17 Bxd3 20. Qxd3) 19... Bxd3 $19 20. Qxd3 Qc3 21. Qxc3 Rxc3 22. Rd1 O-O 23. Kf1 Rfc8 24. Rd2 R8c7 25. a4 Nc8 {And now ...hxg4 would win.} 26. a5 b5 27. Ke2 Ne7 28. Na1 $2 (28. gxh5 Nf5 29. Bf4) 28... hxg4 29. fxg4 $2 (29. Nc2 $19 gxf3+ 30. Kxf3) 29... Rxe3+ 30. Kxe3 $17 Bg5+ 31. Kd3 Bxd2 32. Rxd2 {[%mdl 4096] Endgame KRN-KRN} Rc1 33. Nb3 (33. Nc2 $1 $15) 33... Rb1 $2 ({Black should play} 33... Rc4 $19 {aiming for ...Nc6.} 34. Na1 Rxb4) 34. Kc2 $1 $11 {[%cal Rc2b1]} Rg1 35. Kb2 $1 Nc6 36. Rc2 Nxb4 37. Rc8+ Kh7 {[#] Hoping for ...Rg2+.} 38. Rc7 (38. Ka3 $14 Nd3 39. Ra8) 38... Rg2+ ({Wrong is} 38... Rxg4 $2 39. Ka3 $18) 39. Kc1 Kg6 {...a6 is the strong threat.} 40. Rxa7 Rxh2 41. Rb7 f6 42. exf6 gxf6 43. Rxb5 $2 {[%mdl 8192]} (43. Kb1 $11) 43... Na2+ {Weighted Error Value: White=0.48/Black=0.15} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.16"]
[White "Mwashe, Philip"]
[Black "Ndegwa, Jackson Kamau"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1756"]
[BlackElo "2001"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,105,68,54,106,35,41,10,75,14,8,-29,31,33,35,44,40,2,23,0,24,0,43,-10,28,-29,38,37,46,51,44,47,46,50,32,32,35,45,37,39,37,42,50,42,42,43,62,42,68,44,34,29,54,33,31,22,198,197,197,185,216,196,182,187,221,178,300,300,300,300,300,300,819,826,1486,1397,1348,1135,1811,1752,1847,1736,29976,29977,29975,29976,29980,29981,29980,29981,29981,29982,29987,29986,29986,29986]} 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 Bg4 6. c5 Nd5 7. Qb3 Bxf3 {B01: Scandinavian Defence.} (7... Nc6 $14) 8. Qxf3 {[#]} (8. Qxb7 $16 Nd7 9. gxf3) 8... Nc6 $146 ({Predecessor:} 8... e6 9. Bb5+ c6 10. Bd3 Nb4 11. Be4 Qxd4 12. Nc3 Bxc5 13. Be3 Qc4 14. Bxc5 Qxc5 15. O-O {½-½ (34) Vatanen,A-Nero,G Mureck 2007}) 9. Be3 Ndb4 (9... e6 $11) 10. Na3 (10. Bc4 $16 e6 11. O-O) 10... e6 $11 11. Rd1 Be7 (11... Qf6 $11) 12. Bc4 $14 O-O 13. O-O Bf6 14. Bb3 Qe7 15. Nc4 Rad8 {[%cal Rf6d4]} 16. a3 Nd5 17. Bc2 ({Better is} 17. Ba4 $1 $14) 17... g6 18. Rd3 ({White should play} 18. Ba4) 18... e5 (18... b5 $11 19. cxb6 cxb6) 19. dxe5 Nxe5 20. Nxe5 Qxe5 21. Bd4 Qe6 22. Bb3 {[#] Hoping for Bxf6.} Bxd4 23. Rxd4 {[%cal Rb3d5]} c6 24. Rfd1 {[%cal Rb3d5]} Rfe8 {( -> ...Qe1+!)} 25. h3 {[%cal Rb3d5]} (25. g3 {is more complex.} Qe2 26. Qxe2 Rxe2 27. Bxd5 Rxd5 28. Rxd5 cxd5 29. b4) 25... Qe2 26. Bxd5 cxd5 27. Qxe2 (27. Qb3 {keeps more tension.} Rd7 28. R4d2 Qe5 29. Qb5 Ree7 30. b4) 27... Rxe2 {[%mdl 4096] Endgame KRR-KRR} 28. b4 Re5 29. R1d3 Kf8 30. f4 Re1+ 31. Kf2 Ra1 32. b5 Ke7 33. Ra4 Rc1 $2 {[#] This costs Black the game.} (33... Rb1 $1 $11 {and Black has nothing to worry.}) 34. Rxa7 $18 Rxc5 35. Rxb7+ Kd6 36. a4 Ra8 37. Ra3 Ra5 38. Ke3 Rc4 (38... f5 $142 39. Rxh7 Rcxb5) 39. Rxf7 Raxa4 40. Rxa4 Rxa4 {KR-KR} 41. b6 {[%cal Bb5b6,Bb6b7][%mdl 32]} ({Don't take} 41. Rxh7 $6 Kc5 $18) 41... Kc5 $2 (41... Rb4 42. b7 (42. Rxh7 Rxb6 43. Kf3 Rb3+ 44. Kg4 Re3 $16) 42... h6) 42. b7 Ra3+ 43. Kd2 Rb3 44. Rxh7 Kd4 45. Kc2 Rb6 46. Re7 Rc6+ 47. Kd2 {White mates.} Rb6 48. g4 Rb2+ 49. Kc1 Rb6 50. f5 gxf5 51. gxf5 Kd3 52. f6 Rc6+ 53. Kb2 {Weighted Error Value: White=0.18/Black=0.49} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.17"]
[White "Fernandes, Avelino"]
[Black "Vermaak, Ashley Christopher"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1887"]
[BlackElo "1751"]
[Annotator "NA RC"]
[PlyCount "82"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. f4 {[%emt 0:00:00]} d5 {[%emt 0:00:13]} 2. d4 {[%emt 0:00:06]} c5 {[%emt 0:00:15]} 3. e3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:09]} 4. c3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:06]} 5. Nf3 {[%emt 0:00:02]} cxd4 {[%emt 0:00:23]} 6. exd4 {[%emt 0:00:21]} Bg4 {[%emt 0:01:01]} 7. Bd3 {[%emt 0:00:05]} Bxf3 {[%emt 0:02:11]} 8. Qxf3 {[%emt 0:00:05]} e6 {[%emt 0:00:43]} 9. Nd2 {[%emt 0:00:09]} Bd6 {[%emt 0:00:31]} 10. O-O {[%emt 0:00:08]} Qc7 {[%emt 0:00:32]} 11. Qe3 {[%emt 0:01:23]} Qe7 {[%emt 0:05:22]} 12. Nf3 {[%emt 0:00:05]} Ng4 {[%emt 0:00:06]} 13. Qe2 {[%emt 0:00:07]} O-O-O {[%emt 0:03:21]} 14. b4 {[%emt 0:00:16]} Kb8 {[%emt 0:00:49]} 15. a4 {[%emt 0:00:05]} Rc8 {[%emt 0:01:14]} 16. Bd2 {[%emt 0:00:14]} f5 {[%emt 0:00:10]} 17. a5 {[%emt 0:00:12]} Nf6 {[%emt 0:00:14]} 18. b5 {[%emt 0:00:12]} Nd8 {[%emt 0:00:05]} 19. Ne5 {[%emt 0:00:05]} Ne4 {[%emt 0:00:37]} 20. Rfc1 {[%emt 0:00:15]} Bxe5 {[%emt 0:00:39]} 21. fxe5 {[%emt 0:00:11]} Nxd2 {[%emt 0:00:53]} 22. Qxd2 {[%emt 0:00:06]} g5 {[%emt 0:01:29]} 23. Ra4 {[%emt 0:00:42]} Nf7 {[%emt 0:01:33]} 24. c4 {[%emt 0:00:53]} dxc4 {[%emt 0:00:52]} 25. Raxc4 {[%emt 0:00:05]} Rxc4 {[%emt 0:00:08]} 26. Rxc4 {[%emt 0:00:06]} Rc8 {[%emt 0:00:33]} 27. Qc3 {[%emt 0:00:45]} Qd7 {[%emt 0:00:34]} 28. Rxc8+ {[%emt 0:03:26]} Qxc8 {[%emt 0:00:04]} 29. Qxc8+ {[%emt 0:00:04]} Kxc8 {[%emt 0:00:03]} 30. g4 {[%emt 0:00:02]} Nh6 {[%emt 0:01:29]} 31. gxf5 {[%emt 0:00:04]} Nxf5 {[%emt 0:01:59]} 32. Bxf5 {[%emt 0:00:13]} exf5 {[%emt 0:00:03]} 33. d5 {[%emt 0:00:01]} g4 {[%emt 0:00:23]} 34. b6 {[%emt 0:00:57]} axb6 {[%emt 0:00:09]} 35. axb6 {[%emt 0:00:06]} Kd7 {[%emt 0:00:09]} 36. Kf2 {[%emt 0:00:07]} f4 {[%emt 0:00:04]} 37. Ke2 {[%emt 0:02:02]} h5 {[%emt 0:00:22]} 38. Kf2 {[%emt 0:03:01]} h4 {[%emt 0:00:47]} 39. e6+ {[%emt 0:00:28]} Kd6 {[%emt 0:00:07]} 40. Kg2 {[%emt 0:00:04]} Ke7 {[%emt 0:00:11]} 41. Kf2 {[%emt 0:00:27]} Kd6 {[%emt 0:00:05]} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.18"]
[White "Ebersohn, Raymond Gerhard"]
[Black "Mosutha, Thuso"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "1726"]
[BlackElo "2036"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,68,61,50,52,71,60,66,42,71,76,61,74,72,74,79,52,128,65,68,67,64,46,60,41,54,-19,-13,-20,0,-13,-19,-22,0,-5,0,0,0,0,0,0,0,0,0,0,0,-52,-61,-313,-272,-270,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 e5 7. d5 Na6 8. g4 {E73: King's Indian: Averbakh Variation without 6...c5.} Nc5 9. f3 a5 {9...h5 is more advanced technology.} 10. Qd2 {White is slightly better.} Bd7 11. h4 h5 {[%cal Rh5g4]} 12. g5 Ne8 13. Nh3 a4 14. Nf2 Qe7 (14... c6 $14) 15. Nd3 {[#]} (15. O-O-O $16) 15... Nxd3+ $146 ({Predecessor:} 15... Rd8 16. O-O-O Kh7 17. Rdf1 c6 18. f4 exf4 19. Rxf4 Nxd3+ 20. Bxd3 Be5 21. Rf2 Nc7 {1-0 (47) Romero Perera,E (2157)-Capella Negre,L Barcelona 2010}) 16. Qxd3 c6 17. Rd1 c5 18. Kd2 Nc7 {[#]} 19. b3 (19. Bxc5 $1 $14 dxc5 20. d6 {[%mdl 64] Double Attack}) 19... axb3 $11 20. axb3 Ra3 21. Rb1 Na6 {Hoping for ...Nb4.} 22. Qc2 Nb4 23. Qb2 Rfa8 {[#] And now ...Ra2! would win.} 24. Ra1 Rxa1 25. Rxa1 Qd8 26. Kd1 Na6 27. Ra3 f6 28. Qa1 fxg5 29. Bxg5 (29. hxg5 $11 Bf8 30. Ke1) 29... Bf6 $15 30. Nb5 $2 {[%mdl 8192]} (30. Qc1 $1 $15) 30... Bxg5 $19 31. hxg5 Bxb5 ({Don't take} 31... Qxg5 32. Qc1 $17 (32. Nxd6 $2 h4 $19)) ({Black should try} 31... h4 $19 {...h3 is the strong threat.} 32. Nxd6 Qxg5) 32. cxb5 $11 {The position is equal.} Nc7 33. b6 Rxa3 34. Qxa3 Na8 {Weighted Error Value: White=0.36/Black=0.17} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.19"]
[White "Strovsky, Mikhail"]
[Black "Hamzaoui, Khalil"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "2164"]
[BlackElo "1883"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,98,-13,-17,-16,23,6,4,4,27,8,14,8,0,0,36,-12,0,-22,-11,-16,37,37,33,39,39,39,39,19,16,12,11,16,51,25,37,29,36,33,38,29,37,32,31,18,19,8,21,10,6,12,36,36,36,36,59,0,0,0,0,0,0,-8,-8,-9,-20,-12,0,0,0,0,10,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0]} 1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. Bb2 Bg7 5. g3 O-O 6. Bg2 c5 7. O-O Nc6 8. e3 {[#] A02: Bird's Opening.} Nd7 $146 ({Predecessor:} 8... d4 9. Na3 Be6 10. Qe1 Bd5 11. Rd1 Qb6 12. h3 Rad8 13. g4 e5 14. fxe5 Nd7 {½-½ (31) Hera,I (2559)-Diermair,A (2451) Ruzomberok 2014}) 9. d4 cxd4 10. exd4 Nc5 11. Nc3 Ne4 12. Nxe4 dxe4 13. Ne5 Qb6 14. Kh1 Rd8 {[%cal Rc6d4]} 15. Nxc6 (15. Qe2 {feels hotter.} Nxd4 16. Qxe4 Bf5 17. Qxb7 Qxb7 18. Bxb7 Nxc2 19. Bxa8 Nxa1 20. Bf3) 15... Qxc6 16. c4 {Threatening d5.} Qd7 (16... Qb6 $11) 17. Bxe4 $14 Bxd4 18. Bxd4 Qxd4 19. Qxd4 Rxd4 20. Rfe1 Rb8 21. Rad1 Rxd1 22. Rxd1 $11 {[%mdl 4096] Endgame Strongly threatening Rd8+. KRB-KRB} Bh3 23. Kg1 Kf8 24. Kf2 Ke8 25. Ke3 Bd7 26. a3 Kd8 27. b4 Kc7 28. Rd3 h5 29. h4 Bc6 30. Bxc6 Kxc6 {KR-KR} 31. Ke4 Kc7 32. Ke5 Rc8 33. c5 Kc6 34. f5 (34. a4 $14) 34... gxf5 {The position is equal.} 35. Kxf5 Rg8 36. Re3 Kd7 37. a4 Rg4 38. Rd3+ Ke8 39. Rb3 f6 {[#] And now ...Kf7 would win.} 40. Ke6 Re4+ 41. Kd5 Re1 42. Rd3 Kd7 43. Kc4+ Kc7 44. b5 Re4+ 45. Kb3 Rg4 46. Re3 Kd7 47. Rd3+ Kc7 48. Re3 Kd7 49. Rd3+ Kc7 {Weighted Error Value: White=0.09/Black=0.09} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.20"]
[White "Simpson, Michael M"]
[Black "Sang, Ricky"]
[Result "1-0"]
[ECO "B91"]
[WhiteElo "1995"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,89,55,67,7,102,11,87,-20,-27,-50,-52,-58,-20,-26,-25,-34,-36,-36,-25,-64,-23,-19,-11,-58,-18,-56,-56,-66,-65,-100,-84,-119,-121,-189,-135,-154,-164,-178,-187,-186,80,-7,632,656,941,622,921,929,1383,753,959,550,1187,1161,29988,29989,29989,29990,29990,29990,29990,29991,29991,29992,29992,29993,29993,29993,29993,29994,29995,29996,29997,29998,29998,29999]} 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. O-O d6 7. d4 $1 {The main line 7.d4 scores better than 7.d3.} cxd4 8. Nxd4 Nf6 9. a3 {B91: Sicilian Najdorf: 6 g3.} (9. Re1 $14) 9... Be7 (9... Qc7 $11) 10. Be3 (10. e5 $1 $16 {[%cal Re5f6]} Bxg2 11. exf6 Bxf1 12. fxe7 Qxe7 13. Qxf1) 10... O-O (10... Qc7 $11 {remains equal.}) 11. h3 ({Better is} 11. e5 $1 $16 {[%cal Re5f6]} Bxg2 12. exf6 Bxf1 13. fxe7 Qxe7 14. Qxf1) 11... Qc7 12. Qd2 Nbd7 {[#]} 13. Qe2 $146 ({Predecessor:} 13. Rfe1 Rac8 14. Rad1 Nb6 15. e5 dxe5 16. Ndxb5 axb5 17. Nxb5 Qc4 18. Bxb7 Qxb5 19. Bxc8 Rxc8 20. b3 Bxa3 21. c4 Qc6 22. Qa5 Nxc4 23. bxc4 Qxc4 24. Qxa3 Qb5 25. Rb1 {1-0 (25) Nikitenko,M (2436)-Flores Quillas,D (2245) chess.com INT 2020}) 13... Nc5 {[%cal Rc5e4]} 14. Bg5 h6 15. Bd2 Rac8 16. Kh2 Rfd8 17. Rae1 Bf8 18. f4 Rd7 19. g4 Nh7 20. g5 hxg5 $1 21. fxg5 g6 22. h4 {[#]} Bg7 $1 {[%cal Rg7d4]} 23. Nb3 d5+ 24. e5 (24. Bf4 $17 Be5 25. Bxe5 Qxe5+ 26. Kh1) 24... d4 (24... Ne4 $19 25. Kh3 Qxe5 26. Bxe4 dxe4) 25. Nxc5 $17 Qxc5 26. Ne4 Qxe5+ 27. Bf4 {[#]} Qf5 ({Black should play} 27... d3 $1 $19 {[%cal Rd3e2][%mdl 512]} 28. cxd3 Qxb2 29. Qxb2 Bxb2) 28. Bd6 (28. Bg3 $16 d3 29. cxd3 Bxe4 30. Rxf5 Bxf5 31. Be4) 28... Rxc2 $2 {[%mdl 8192] Black cannot hold the game after this.} 29. Qxc2 $18 Qg4 30. Bg3 d3 31. Qd2 f5 {[#]} 32. Bh3 $1 Qh5 (32... Qxe4 33. Rxe4) 33. Nd6 Be4 34. Nxe4 fxe4 35. Bxe6+ {[%mdl 64] Double Attack. White mates.} Kh8 36. Bxd7 Nf8 37. Bh3 Qh7 38. Rxe4 Qg8 39. Qxd3 Qa2 40. Rf2 a5 41. Re8 Kh7 42. h5 b4 43. Rexf8 {[%mdl 64] Remove Defender} Bxf8 44. Qxg6+ Kh8 45. Be5+ {Weighted Error Value: White=0.68/Black=0.81} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.21"]
[White "Kamara, Ansumana"]
[Black "Monaheng Motlomelo"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "1899"]
[BlackElo "1538"]
[Annotator "NA RC"]
[PlyCount "49"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:04]} 3. Bb5 {[%emt 0:00:05]} d6 {[%emt 0:00:04]} 4. O-O {[%emt 0:00:05]} Bd7 {[%emt 0:00:04]} 5. c3 {[%emt 0:00:04]} Nf6 {[%emt 0:00:04]} 6. Re1 {[%emt 0:00:04]} Be7 {[%emt 0:00:04]} 7. d4 {[%emt 0:00:09]} exd4 {[%emt 0:00:07]} 8. cxd4 {[%emt 0:00:04]} O-O {[%emt 0:00:03]} 9. h3 {[%emt 0:00:11]} a6 {[%emt 0:00:07]} 10. Ba4 {[%emt 0:00:05]} h6 {[%emt 0:00:57]} 11. Nbd2 {[%emt 0:00:09]} Rb8 {[%emt 0:02:49]} 12. Nf1 {[%emt 0:00:11]} Re8 {[%emt 0:00:32]} 13. Ng3 {[%emt 0:00:18]} Bf8 {[%emt 0:00:06]} 14. a3 {[%emt 0:00:18]} Ne7 {[%emt 0:00:14]} 15. Bc2 {[%emt 0:00:10]} Ng6 {[%emt 0:00:45]} 16. Qd3 {[%emt 0:00:46]} Bb5 {[%emt 0:00:12]} 17. Qd1 {[%emt 0:00:19]} Bd7 {[%emt 0:04:34]} 18. Be3 {[%emt 0:00:15]} c5 {[%emt 0:00:19]} 19. dxc5 {[%emt 0:02:38]} dxc5 {[%emt 0:00:08]} 20. Qd3 {[%emt 0:00:05]} Bb5 {[%emt 0:00:09]} 21. Qb3 {[%emt 0:00:06]} Qc7 {[%emt 0:01:58]} 22. Rad1 {[%emt 0:00:50]} Bc6 {[%emt 0:00:22]} 23. Bc1 {[%emt 0:00:41]} b5 {[%emt 0:00:35]} 24. Qc3 {[%emt 0:03:13]} Nd7 {[%emt 0:03:29]} 25. b3 {[%emt 0:01:44]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.22"]
[White "Joelson, Ricardo"]
[Black "Libe, Sofonea"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2017"]
[BlackElo "1509"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,57,128,126,115,47,58,25,32,0,12,10,11,0,56,0,0,-23,-15,-54,0,0,28,34,161,162,145,141,566,572,793,787,1010,954,1172,1158,1158,1149,1138,1141,1052,825]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Nxc6 bxc6 7. e5 Ng8 8. Bc4 e6 9. O-O d5 10. exd6 $1 Bxd6 {B33: Sicilian: Pelikan and Sveshnikov Variations.} 11. Qf3 (11. Ne4 $16 Bxh2+ {[%mdl 64] Decoy} 12. Kxh2 Qh4+ 13. Kg1 Qxe4 {[#]} 14. Qd6 $1 (14. Bg5 Nf6 $14)) 11... Qc7 $14 12. h3 Nf6 {[#] White has an edge.} 13. Rd1 $146 ({Predecessor:} 13. Bg5 Nd5 14. Ne4 Bh2+ 15. Kh1 Be5 16. Rad1 Bxb2 17. Bb3 f6 18. c4 fxg5 19. cxd5 cxd5 20. Bxd5 exd5 21. Nxg5 {1-0 (33) Traeger,M-Hutya,J Hungary 1996}) 13... O-O 14. Bg5 Nd5 15. Ne4 Be7 (15... Bh2+ $11 16. Kh1 Be5) 16. Bd2 (16. Bxe7 $14 Qxe7 17. Bb3) 16... Bb7 $11 17. Bd3 c5 18. Qh5 g6 (18... c4 $15 19. Be2 Rab8) 19. Qh6 Rfe8 20. Ng5 Nf6 ({Black should play} 20... Bxg5 $14 21. Bxg5 (21. Qxg5 c4 $11) 21... f6) 21. Bc3 $40 {[%mdl 128] And now Nxh7! would win. White wants a kill.} Bf8 22. Qh4 e5 $2 {[%mdl 8192] This costs Black the game.} (22... Be7 $16 {is a better chance.}) 23. Bc4 {White is clearly winning.} Re7 24. Nxf7 {[%mdl 64] [#] Discovered Attack} Rxf7 25. Qxf6 $1 {[%mdl 64] Double Attack, Pin} Bg7 26. Qxf7+ Qxf7 27. Bxf7+ Kxf7 28. Rd7+ {[%mdl 64] Double Attack} Ke6 29. Rxg7 {Weighted Error Value: White=0.21/Black=0.82} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "2.23"]
[White "El Kouri, Abdallah lamine"]
[Black "Singe, Philip Mbawala"]
[Result "0-1"]
[ECO "B08"]
[BlackElo "1857"]
[Annotator "NA RC"]
[PlyCount "80"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:06]} 2. Nc3 {[%emt 0:00:16]} g6 {[%emt 0:00:06]} 3. e4 {[%emt 0:00:09]} d6 {[%emt 0:00:02]} 4. Nf3 {[%emt 0:00:04]} Bg7 {[%emt 0:00:02]} 5. Be3 {[%emt 0:00:07]} O-O {[%emt 0:00:03]} 6. Bc4 {[%emt 0:00:07]} Nbd7 {[%emt 0:00:06]} 7. O-O {[%emt 0:00:05]} Nb6 {[%emt 0:00:29]} 8. Bd3 {[%emt 0:00:14]} Be6 {[%emt 0:00:15]} 9. d5 {[%emt 0:00:14]} Bg4 {[%emt 0:00:09]} 10. h3 {[%emt 0:00:17]} Bxf3 {[%emt 0:00:04]} 11. Qxf3 {[%emt 0:00:10]} Nfd7 {[%emt 0:00:02]} 12. Nd1 {[%emt 0:00:34]} Ne5 {[%emt 0:00:05]} 13. Qe2 {[%emt 0:00:06]} Nxd3 {[%emt 0:00:05]} 14. cxd3 {[%emt 0:00:22]} Qd7 {[%emt 0:00:03]} 15. Rb1 {[%emt 0:00:13]} Qa4 {[%emt 0:00:10]} 16. a3 {[%emt 0:00:14]} Qa6 {[%emt 0:00:09]} 17. Qc2 {[%emt 0:00:19]} Rfc8 {[%emt 0:00:13]} 18. f4 {[%emt 0:00:37]} Nd7 {[%emt 0:00:06]} 19. Kh1 {[%emt 0:00:23]} c6 {[%emt 0:00:02]} 20. dxc6 {[%emt 0:00:50]} Rxc6 {[%emt 0:00:05]} 21. Qf2 {[%emt 0:00:14]} Qxd3 {[%emt 0:00:12]} 22. Qf3 {[%emt 0:00:27]} Nc5 {[%emt 0:00:54]} 23. Nf2 {[%emt 0:00:17]} Qb3 {[%emt 0:00:29]} 24. f5 {[%emt 0:01:00]} Nd7 {[%emt 0:00:27]} 25. Ng4 {[%emt 0:00:26]} Ne5 {[%emt 0:00:21]} 26. Nxe5 {[%emt 0:00:35]} Bxe5 {[%emt 0:00:03]} 27. fxg6 {[%emt 0:00:05]} hxg6 {[%emt 0:00:02]} 28. h4 {[%emt 0:01:25]} a6 {[%emt 0:00:26]} 29. h5 {[%emt 0:00:15]} Qe6 {[%emt 0:00:54]} 30. h6 {[%emt 0:00:12]} f6 {[%emt 0:00:11]} 31. b4 {[%emt 0:01:14]} Kh7 {[%emt 0:00:24]} 32. g4 {[%emt 0:00:39]} Rac8 {[%emt 0:00:20]} 33. g5 {[%emt 0:00:27]} Rc3 {[%emt 0:00:05]} 34. gxf6 {[%emt 0:01:09]} exf6 {[%emt 0:00:17]} 35. Rbe1 {[%emt 0:00:40]} Rxa3 {[%emt 0:00:05]} 36. Rc1 {[%emt 0:00:37]} Rcc3 {[%emt 0:00:11]} 37. Rfe1 {[%emt 0:00:25]} Bd4 {[%emt 0:00:13]} 38. e5 {[%emt 0:00:41]} Rxe3 {[%emt 0:00:34]} 39. Qxb7+ {[%emt 0:00:09]} Kxh6 {[%emt 0:00:08]} 40. Qg2 {[%emt 0:01:37]} Rh3+ {[%emt 0:00:05]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.1"]
[White "Adly, Ahmed"]
[Black "Zaibi, Amir"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2615"]
[BlackElo "2381"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,57,7,0,20,0,8,12,60,52,81,75,130,102,105,89,252,226,241,204,317,291,270,213,478,446,670,671,666,647,580,613,779,575,2414,1203,1197,1147,1161,1159,1024,1011,29993,29994,29994,29992]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4 5. d3 Nbd7 6. Nbd2 e6 7. h3 Bh5 8. e4 Be7 {A07: Réti Opening: New York and Capablanca Systems.} 9. Qe1 dxe4 10. dxe4 e5 {The position is equal.} 11. Nc4 Qc7 12. Nh4 {[#]} O-O-O $146 (12... O-O $142) ({Predecessor:} 12... Nc5 13. f4 Nfd7 14. Nf5 Bf8 15. g4 Bg6 16. fxe5 Nxe5 17. Bf4 f6 18. Rd1 Rd8 {1-0 (26) Shoker,S (2500)-Belouadah,S (2301) Monastir 2013}) 13. Nf5 Bf8 14. Be3 Nb6 $2 {[#]} (14... Kb8 $16) 15. Nxb6+ $1 $18 axb6 16. a4 Kb8 (16... Bg6 {was called for.} 17. a5 bxa5) 17. a5 bxa5 18. g4 ({Weaker is} 18. Qxa5 Qxa5 19. Rxa5 Nd7 $14) 18... Bxg4 $2 (18... Bg6 19. Rxa5 (19. Qxa5 Qxa5 20. Rxa5 Nd7 $14) 19... Rd1 20. Ra8+ (20. Qxd1 Qxa5 21. c3 Kc8 $16) 20... Kxa8 21. Qxd1 Kb8) 19. hxg4 Nxg4 (19... g6 $142 20. Bg5 Bb4) 20. Rxa5 {[#] Hoping for Qa1.} Nxe3 21. Nxe3 {aiming for Qa1.} b6 22. Ra6 Bc5 23. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Bxe3 24. Qxe3 (24. Qa1 $142 Qd7 25. fxe3) 24... Kb7 25. Rfa1 {White wants to mate with Ra7+.} Ra8 26. Qa3 {[%cal Ra6a8]} Qb8 27. b5 {Threatening mate with Rxa8.} c5 28. Qa2 Rxa6 29. Qxf7+ {Black got outplayed after the opening.  Weighted Error Value: White=0.21/Black=0.85} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.2"]
[White "Kayonde, Andrew"]
[Black "Amin, Bassem"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2393"]
[BlackElo "2693"]
[Annotator "TA"]
[PlyCount "158"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,158,38,17,45,33,58,18,26,13,24,16,11,10,28,3,7,0,0,0,0,0,4,-16,0,-34,-16,-65,0,0,0,0,0,0,7,7,7,6,6,7,16,19,25,25,12,12,34,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,18,6,24,0,8,8,47,47,47,31,137,15,43,43,41,7,7,7,8,10,8,0,5,4,4,4,11,0,0,0,0,0,24,0,0,0,75,75,75,75,75,75,75,75,75,75,75,75,75,75,76,76,76,75,75,75,75,75,76,75,76,76,82,82,82,76,76,76,83,83,83,83,83,83,83,75,80,0,83,0,83,0,83]} 1. d4 g6 2. e4 Bg7 3. c3 d6 4. Nf3 Nf6 5. Bd3 O-O 6. O-O Nc6 7. d5 Nb8 {[%cal Bc6b8,Bb8a6,Ba6c5][%mdl 32]} 8. c4 {8.h3 is the fancy move.} c6 {B07: Pirc Defence: Miscellaneous Systems.} 9. h3 e5 10. dxe6 Bxe6 11. Nc3 Na6 12. Re1 {[#]} Nc5 $146 ({Predecessor:} 12... Nd7 13. Bg5 Qb6 14. Rb1 h6 15. Be3 Qc7 16. Nd4 Ne5 17. Nxe6 fxe6 18. Be2 g5 {½-½ (68) Brynell,S (2497)-Hillarp Persson,T (2549) Gothenburg 2006}) 13. Bf1 d5 14. cxd5 cxd5 15. e5 {Bg5 is the strong threat.} Nfe4 16. Be3 Nxc3 17. bxc3 Rc8 18. Bd4 Bf5 19. g4 Bd7 20. Rb1 Qa5 (20... b6 $15) 21. Nd2 $11 b6 22. c4 Be6 ({Not} 22... Qxa2 $2 23. Ra1 $18) 23. Bxc5 bxc5 24. cxd5 Bxd5 25. Nc4 Bxc4 26. Bxc4 Qc3 27. Qb3 Bxe5 28. Qxc3 Bxc3 29. Re7 Rc6 30. Rxa7 Rf6 $1 31. Kg2 Rf4 32. Ra4 Bd4 33. f3 Re8 34. Rb7 Bc3 35. Bb5 Re2+ 36. Bxe2 Rxa4 {[%mdl 4096] Endgame KRB-KRB} 37. a3 Rxa3 38. Bc4 Bd4 39. Bxf7+ Kf8 40. g5 Rc3 41. Bd5 Be3 42. h4 Rc2+ 43. Kh3 {Strongly threatening Rf7+.} (43. Kg3 {keeps more tension.} Rd2 44. Be4 Kg8 45. Rc7 Bf2+ 46. Kg4) 43... h6 (43... Rd2 $1 $14 44. Be4 Kg8) 44. f4 (44. Rf7+ $1 $16 Ke8 45. Rf6) 44... Rc3 45. Kg2 hxg5 46. fxg5 {Threatening Rf7+.} Rd3 47. Be4 Rd4 48. Kf3 Bf2 49. h5 gxh5 50. g6 Bh4 51. Rh7 c4 52. Rxh5 Bf6 53. Rc5 c3 54. Rc7 Kg8 (54... Rd6 {feels hotter.} 55. Rf7+ Kg8 56. Rb7 Kf8 57. Bc2 Bg7) 55. Bc2 {Black must now prevent Bb3+.} Rb4 56. Be4 {Hoping for Bd5+.} Be5 {[#]} (56... Rd4 $11 {keeps the balance.}) 57. Bd5+ $1 $16 Kf8 58. g7+ Bxg7 59. Rf7+ Ke8 60. Rxg7 {KRB-KR} Rd4 61. Be4 Rc4 62. Bc2 Kd8 63. Ke3 Rh4 64. Kd3 Rh3+ 65. Kc4 Re3 66. Bd3 Re7 67. Rg8+ ({Much weaker is} 67. Kxc3 $6 Rxg7 68. Be4 Rd7 $11) 67... Kc7 68. Kxc3 Kd6 69. Kd4 Ke6 {[#]} 70. Rg6+ $1 Kf7 71. Rd6 Re1 72. Ra6 (72. Bc2 {is more complex.} Rf1 73. Ke5 Re1+ 74. Kd5 Rg1 75. Ra6) 72... Ke7 73. Be4 Kd7 74. Ke5 Kc7 75. Kd5 Rd1+ 76. Kc5 Rc1+ 77. Kd5 Rd1+ $1 78. Ke5 Re1 79. Kd5 Rd1+ $1 {Weighted Error Value: White=0.09/Black=0.13} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.3"]
[White "Silva, David"]
[Black "Ortega Amarelle, Mariano"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2258"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,97,-19,-10,-21,0,-38,-27,-41,-39,-66,-52,-60,-43,-47,-48,-62,-29,-36,-33,-33,0,0,13,-46,0,-57,-20,-132,-130,-163,-68,-115,-116,-111,-113,-156,-154,-152,-137,-129,-77,-143,-111,-184,-81,-96,-98,-100,-91,-106,-104,-104,-91,-185,-179,-209,-178,-183,-121,-115,0,-106,-118,-106,-35,-81,0,-91,0,-66,-42,-41,-60,-93,0,-78,-60,-55,-56,-50,0,-2,0,0,0,0]} 1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 5. g3 Nf6 6. Bg2 O-O 7. O-O Re8 8. a4 {B10: Caro-Kann: 2 d3 and 2 c4.} a5 9. b3 Bg4 10. h3 {Black has an edge.} Bh5 {[#]} 11. Qe1 $146 ({Predecessor:} 11. exd5 cxd5 12. g4 Nxg4 13. hxg4 Bxg4 14. Qe1 Nc6 15. Nh2 Bh5 16. Qe3 Nd4 17. Bb2 Nxc2 {0-1 (44) Nilsson,A (2235)-Berczes,D (2528) Sweden 2013}) 11... Bb4 12. Qe3 Bc3 13. Rb1 Na6 14. Bb2 Bxf3 15. Nxf3 Bxb2 16. Rxb2 dxe4 17. dxe4 Qd6 18. Nh4 (18. Nd2 $11) 18... Rad8 19. c3 (19. Nf5 $11 Qd2 20. f3) 19... Qd3 {Threatens to win with ...Qxe3.} 20. Qc1 (20. Nf5 $11) 20... Nxe4 $17 21. Re1 Nf6 ({Much weaker is} 21... Nxc3 $6 22. Bf1 $11) (21... Nec5 $1 $19 22. Bf1 Qd6) 22. Bf1 Qd7 23. b4 h6 24. Bxa6 bxa6 25. Kh2 axb4 26. cxb4 e4 (26... Nh7 $142 27. Re3 Ng5) 27. Rc2 (27. Ng2 $142) 27... Re6 28. Rc4 (28. Nf5 $17) 28... Qd2 (28... Nh7 $1 $19 {and Black stays clearly on top. aiming for ...Ng5.} 29. Kg2 Ng5) 29. Qxd2 Rxd2 30. Kg1 Ra2 31. Nf5 Rxa4 32. Nd4 Rd6 33. Nxc6 {[#]} (33. Nf5 $17 Rd2 34. Rxc6) 33... Rd2 $1 $19 34. Ne7+ Kh7 {Strongly threatening ...Raa2.} 35. Nf5 {[#]} Raa2 (35... a5 $1 $19 36. Ne3 axb4) 36. Rf1 $17 Kg6 ({Black should try} 36... h5 $17 37. Ne3 g6) 37. Ne3 (37. Ne7+ $11 Kh7 38. Nf5) 37... Rdb2 38. Nd1 Rb1 ({Better is} 38... Rb3 $17 39. Ne3 Ra4) 39. Ne3 Rbb2 40. Nd1 $1 {[%cal Rd1b2]} Rd2 41. Ne3 $1 h5 42. Rc6 Rdb2 43. Nd5 Rd2 (43... Kg5 $17 44. Nc3 Ra3 45. h4+ Kg4) 44. Nc3 (44. Ne3 $1 $11 {keeps the balance.}) 44... Rac2 {White must now prevent ...e3!} 45. Nxe4 Rxc6 46. Nxd2 Rc2 47. Nf3 {The position is equal.} Rb2 48. Ra1 Rxb4 49. Rxa6 {Black had all chances to win.  Weighted Error Value: White=0.30/Black=0.26} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.4"]
[White "Bellahcene, Bilel"]
[Black "Beukes, Dante M"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2510"]
[BlackElo "2206"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,84,15,17,36,31,35,31,52,22,52,26,29,35,18,-14,0,-2,33,12,34,9,48,0,8,0,74,62,45,50,50,58,105,-222,-220,-305,-343,-335,-278,-275,-211,-211,-211,-211,-211,-211,-211,-211,-192,-192,-91,-92,-23,-75,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 Nfd7 {B81: Sicilian Scheveningen: Keres Attack.} 8. g5 b5 9. a3 Bb7 {White is slightly better.} 10. Be3 Nc6 11. h4 Be7 12. Nxc6 Bxc6 13. Qd2 O-O 14. h5 {[#]} Nc5 $146 ({Predecessor:} 14... Ne5 15. O-O-O Nf3 16. Qd3 Ne5 {½-½ (16) Noble,M (2565)-Roubaud,D (2572) ICCF email 2011}) 15. h6 g6 16. f3 ({Stronger than} 16. Qd4 e5 $17) 16... Rb8 17. Bh3 e5 18. Nd5 Ne6 (18... Bxd5 $11 {keeps the balance.} 19. exd5 Qc7) 19. Nxe7+ Qxe7 20. O-O-O Rfd8 21. Rhe1 d5 22. Qc3 {[%mdl 8192] [#]} (22. exd5 $16 {stays on course.} Rxd5 23. Qc3) 22... d4 $19 23. Qxc6 {[#] Bxe6 is the strong threat.} (23. Qb4 Qxb4) 23... Rd6 {[%cal Rd6c6]} 24. Qxd6 Qxd6 25. Bd2 Qc7 26. Bxe6 fxe6 27. Kb1 a5 {Threatens to win with ...b4.} 28. Bc1 b4 29. Rd3 Qe7 {Strongly threatening ...bxa3.} 30. a4 b3 (30... Rf8 $19 {has better winning chances.} 31. Rf1 Qc7) 31. cxb3 $17 Rb6 (31... Kf7 $17) 32. Red1 {[#]} (32. Ka2 $11) 32... Qb7 (32... Rb7 $1 $17) 33. Ka2 $11 {And now Bf4! would win.The position is equal.} Qc6 34. Bd2 {White wants to play Rc1.} Qc2 35. Bxa5 Rxb3 36. Rxb3 {Intending Rb8+ and mate.} Qxd1 {[%mdl 4096] Endgame KQ-KRB} 37. Rb8+ Kf7 38. Bb4 {[%csl Gb4][%cal Rb8f8]} Qxa4+ 39. Kb1 {[%csl Gb4][%cal Rb8f8]} Qd1+ {[%mdl 64] Double Attack} 40. Ka2 {[%csl Gb4][%cal Rb8f8]} Qa4+ 41. Kb1 {[%csl Gb4][%cal Rb8f8]} Qd1+ {[%mdl 64] Double Attack} 42. Ka2 {[%csl Gb4][%cal Rb8f8]} Qa4+ {Whites escaped into a draw.  Weighted Error Value: White=0.25/Black=0.25} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.5"]
[White "Gohil, Mehul"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1991"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,0,-6,0,-10,-33,-8,-33,-31,-34,-34,-102,-96,-104,-99,-152,-93,-797,-363,-352,-208,-208,-209,-196,-185,-196,-145,-152,-147,-366,-360,-348,-303,-302,-272,-272,-275,-270,-241,-289,-222,-263,-257,-287,-304,-364,-358,-365,-339,-362,-357,-355,-270,-264,-271,-269,-222,-223,-232,-298,-304,-338,-316,-325,-333,-332,-323,-430,-447,-445,-439,-478,-464,-565,-617,-992,-947,-850,-790,-1154,-1138,-1358,-955,-4133,-2432,-29982,-29983,-29982,-29983]} 1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. c4 dxc4 5. e3 c5 6. Bxc4 {D00: 1 d4 d5: Unusual lines.} cxd4 $1 7. Nc3 Bg7 8. Qh5 {The position is equal.} O-O 9. O-O-O Nc6 {[#]} 10. Nf3 $146 {[#]} ({Predecessor:} 10. exd4 Qa5 11. Qxa5 Nxa5 12. Bd3 Rd8 13. Nge2 a6 14. Rhe1 b5 15. Kb1 Bb7 16. a3 {½-½ (63) De Vreesse,S (2229)-Lenic,L (2641) chess.com INT 2017}) 10... Qa5 $1 $17 {[%cal Ra5h5]} 11. Nd5 Kh8 $36 {[%mdl 2048] Strongly threatening ...Qc5. Black is on the roll.} 12. exd4 (12. Nxd4 $2 Qc5 $19) (12. Kb1 $142) 12... Nb4 (12... Be6 $142 13. a3 (13. Bd3 $2 f5 $19) 13... h6) 13. Nxf6 $2 {[%mdl 8192]} Qxh5 (13... Bf5 $142 14. b3 Qa3+ 15. Kd2 Bg6) 14. Nxh5 $19 Bg4 (14... Bh6+ $142 15. Nd2 (15. Kb1 $2 Bf5+ 16. Ka1 Nc2+ 17. Kb1 Na3+ {[%mdl 64] Double Attack, Discovered Attack (Double check)} 18. Ka1 Nxc4 $19) 15... Bg4 {[%mdl 64] Double Attack}) 15. Nxg7 Rac8 16. a3 Rxc4+ 17. Kb1 Nd5 (17... Kxg7 18. axb4 Rxb4 19. Rd2 $17) ({Black should play} 17... Nc6 $19 {Threatens to win with ...Bxf3.} 18. d5 Nd8) 18. Ne5 $17 Bxd1 19. Nxc4 $2 {White does not recover from this.} (19. Rxd1 $17 Rc7 20. Nf5) 19... Be2 $19 20. Na5 Kxg7 21. Nxb7 Bd3+ 22. Ka1 Rc8 23. Nc5 Bg6 24. b4 Nc7 25. Rc1 {Threatening Na6!} Rd8 26. Nb7 Rd7 27. Na5 Ne6 28. Nc6 Be4 29. b5 Nxd4 {White must now prevent ...Nb3+.} 30. Rc4 Nb3+ ({And not} 30... Bxg2 31. Nxd4 Bf1 32. Rb4 $11) 31. Kb2 Nd2 ({Weaker is} 31... Bxg2 32. Rg4+ Kf6 33. Kxb3 $14) 32. Ra4 Bxc6 33. bxc6 {[%mdl 4096] Endgame KRN-KR} Rc7 34. Rd4 Nf1 ({Stronger than} 34... Rxc6 35. Rxd2 Kf6 36. Kb3 $11) 35. h3 Rxc6 36. Rd1 Nh2 37. Rh1 {[#]} Rf6 $1 38. Rxh2 (38. f3 Nxf3) 38... Rxf2+ {KR-KR} 39. Kc3 h5 40. a4 h4 41. Kb4 f5 42. Kb5 f4 43. Rh1 Rxg2 44. Ka6 Ra2 45. a5 e5 46. Rb1 f3 47. Rb5 f2 48. Rb1 e4 {Weighted Error Value: White=0.89/Black=0.23} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.6"]
[White "Seddaoui, Yamine"]
[Black "Amdouni, Zoubaier"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2127"]
[BlackElo "2229"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,18,6,21,17,11,17,23,53,0,0,-4,11,0,58,37,84,43,55,37,44,47,105,103,142,120,138,103,129,123,208,184,228,232,241,248,283,288,277,226,226,230,272,254,247,228,229,168,162,126,252,141,145,95,325,296,1008,590,567,545,878,929,954,589,575,581,555,562,2311,2477,2424,2148,2032,1641,12792,10286,12792,12796,5593,5073,29969,29969,29975,29967,29976,29977,29979,29980,29980,29975,29983,29984,29988,29985,29988,29989,29991,29992,29992,29992]} 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. Bb5 Nge7 5. d4 cxd4 6. Nxd4 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} a6 {[#] White must now prevent ...Nxd4.} 7. Nxc6 bxc6 8. Ba4 {[#] The position is equal.} a5 $146 ({Predecessor:} 8... Ng6 9. O-O Bc5 {½-½ (9) Farkas,G (2250)-Boronyak,A (2302) Hungary 2006}) 9. O-O ({White should try} 9. Be3 $14) 9... Ba6 $11 10. Re1 Ng6 11. Qh5 e5 (11... Bb4 $11) 12. Be3 Be7 13. Rad1 {Threatens to win with Bxc6!} Qc7 14. Qg4 Bc4 15. Bb3 Be6 (15... Bxb3 $14 16. axb3 d6) 16. Bxe6 $16 fxe6 17. Rd3 Kf7 18. Red1 Rhd8 19. Na4 {Strongly threatening Bb6.} c5 (19... Rab8 $16 20. g3 d5) 20. c4 $18 Rab8 21. b3 d6 22. Nc3 Qc8 23. Nb5 Rb6 24. a4 Kg8 25. g3 Nf8 26. Bg5 Qb7 27. h4 Bxg5 28. hxg5 Qe7 29. Kg2 Kf7 (29... Rc6 $16 30. Qe2 Qxg5) 30. f4 (30. Qe2 $18) 30... exf4 $16 31. gxf4 e5 $2 {A mistake that costs the game.} (31... Ng6 $16 {might work better.}) 32. f5 h6 $2 (32... Kg8 33. Kf2 Rd7) 33. Qh5+ Kg8 34. gxh6 gxh6 35. Qxh6 {Intending Rg3+ and mate.} Nh7 36. Rxd6 Rbxd6 37. Rxd6 Rxd6 38. Nxd6 ({Less strong is} 38. Qxd6 Qg5+ 39. Kf1 Qf4+ 40. Ke2 Qxe4+ 41. Kd2 Qf4+ 42. Kc2 Qxf5+ 43. Qd3 e4 $16) 38... Qd7 39. Qe6+ Qxe6 40. fxe6 $18 {[%mdl 4096] Endgame KN-KN} Kf8 41. Nb7 Ng5 42. Nxc5 Ke7 43. Kf2 Kd6 {[#]} 44. Ke3 $1 Nh7 (44... Ke7 45. Nb7) 45. Nb7+ {White mates.} Kxe6 46. Nxa5 Kd6 47. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} Ng5 48. c5+ Kc7 49. Nc4 Nf7 50. b5 Kb7 51. a5 Kc7 52. c6 Nd6 53. Nxd6 Kxd6 54. Kd3 {Weighted Error Value: White=0.44/Black=0.49} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.7"]
[White "Wanyama, Harold"]
[Black "Cambando, Jose"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2312"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,117,34,49,39,53,41,62,41,48,0,35,37,35,24,25,18,28,28,50,37,100,6,6,0,0,0,17,0,0,0,24,0,0,25,27,32,160,157,143,135,139,143,150,137,189,185,187,187,212,203,201,188,190,164,169,139,139,120,150,30,133,66,199,217,210,163,165,160,163,116,319,124,120,112,77,72,76,55,61,72,118,102,170,156,285,274,1475,1423,1675,1641,1639,1528,1884,1535,1937,1904,1828,1755,1739,1668,2042,1871,3025,2309,29955,12839,29980,29979,29985,29986]} 1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. e4 e5 5. Nge2 Be7 6. f3 {A53: Old Indian Defence without Nf3.} a5 7. Be3 Nbd7 8. Qd2 {White is slightly better.} O-O {[#]} 9. h4 $146 ({Predecessor:} 9. Ng3 g6 10. Be2 h5 11. O-O h4 12. Nh1 Nh5 13. g3 Ndf6 14. Rad1 Re8 15. Kg2 Nh7 16. f4 exf4 17. gxf4 {1-0 (26) Pablo Marin,A (2390)-Fernandez Menendez,E Spain 1994}) 9... h5 (9... d5 $5) 10. O-O-O a4 11. a3 Qa5 12. Ng3 g6 13. Kb1 exd4 14. Bxd4 Nc5 (14... Re8 $14) 15. Qg5 (15. Qh6 $16 {Threatens to win with Nxh5.} Nb3 16. Nd5 $1 {[%mdl 512]} cxd5 17. Bc3 Qxc3 18. bxc3 dxe4 19. Be2 (19. Nxe4 Nxe4 20. fxe4 Nc5 $16)) 15... Ne6 $11 16. Qxa5 Rxa5 17. Be3 Ne8 18. Bb6 Ra8 19. Bd3 Bf6 {Black wants to play ...Bxc3.} 20. Nge2 c5 $1 21. Nd5 Ra6 22. Bc2 $36 {[%mdl 2048] White is pushing.} Bd7 (22... Kg7 $14) 23. Nxf6+ $16 {[%mdl 64] Overworked Piece} Nxf6 24. Rxd6 Bc6 {[#]} 25. Bxc5 {[%mdl 512]} Nxc5 (25... Nxe4 26. Rxc6) 26. Rxf6 Ne6 (26... Rd8 $16) 27. e5 Ra5 28. f4 Bxg2 29. Rg1 Bf3 30. Nc3 Nd4 31. Bd3 Bg4 32. Nd5 Nf3 33. Rh1 Kg7 34. Rb6 (34. Rd6 $1 $16) 34... Be6 (34... Rc5 $11 {keeps the balance.}) 35. Rxb7 ({White should play} 35. Nc7 $16 Bg4 36. Kc2 (36. Rxb7 Rc8 $14)) 35... Bxd5 (35... Rd8 $14) 36. cxd5 $18 Rxd5 37. Be2 Nd2+ 38. Ka2 Nb3 39. e6 Rc5 $2 (39... Nc5 $16 {is a better defense.} 40. Rxf7+ Rxf7 41. exf7 Rd2) 40. Bb5 $2 (40. e7 $18 {and the rest is easy.} Re8 41. Bb5 Rxb5 42. Rxb5) 40... Na5 $16 41. Rb6 {Strongly threatening e7.} fxe6 42. Bxa4 {b4 is the strong threat.} Rxf4 43. Rb4 (43. Be8 {looks sharper.} Rg4 44. Rxe6 Rc2 45. Bb5 Nc4 46. Bxc4 Rcxc4 47. b4) 43... Rcc4 44. Rxc4 Rxc4 $14 {[%mdl 4096] Endgame [#] KRB-KRN. White now steadily converts the win.} 45. Bb5 {[%cal Rb5c4]} Rc2 {[#]} (45... Rg4 $16) 46. a4 $1 $18 Rf2 (46... Kf6 $16 {might work better.} 47. Ka3 Nb7) 47. Ka3 Kf6 $2 (47... e5 48. Rd1 e4) 48. Rf1 Rf5 49. b4 Nb7 50. Bd3 Rxf1 51. Bxf1 {KB-KN} Ke5 52. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Nd6 53. a6 Nc8 54. Ka4 Kd6 55. Ka5 Kc7 56. Bd3 Kb8 57. Bxg6 e5 58. Bxh5 e4 59. Be2 {Weighted Error Value: White=0.22/Black=0.60} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.8"]
[White "Hemam, Moulaye Brahim"]
[Black "Bouzidi, Ahmed"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2046"]
[BlackElo "2163"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,52,36,16,39,35,54,40,65,64,81,83,141,132,132,129,135,135,173,118,143,120,135,127,125,79,93,54,127,39,307,310,298,252,325,205,208,184,181,83,125,115,122]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 d6 6. O-O a6 7. Bb3 Bg4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 Qd7 9. Re1 h5 {White is slightly better.} 10. Nf1 O-O-O {[#]} 11. h3 $146 ({Predecessor:} 11. Be3 Bxe3 12. Nxe3 Be6 13. Ba4 Rh6 14. d4 exd4 15. cxd4 d5 16. Ne5 Qd6 17. Nf5 Bxf5 18. Nxf7 {1-0 (31) Blazeka,M (1772)-Smetisko,M (1687) Busevec 2014}) 11... Be6 (11... Bxf3 $142 12. Qxf3 Rdf8) 12. Bxe6 $16 fxe6 13. b4 $1 {[%cal Rb4c5]} Bb6 {[#]} 14. a4 $1 Ne7 15. Qb3 (15. N1d2 $18) 15... Ng6 16. c4 a5 {[#]} 17. bxa5 $1 Bxa5 18. Rb1 {[%csl Gb1][%cal Rb3b7]} Qc6 19. Re2 Bb6 ({Black should play} 19... Nd7 $14) 20. Bd2 (20. a5 $16 Bd4 21. Be3 Bxe3 22. Nxe3) 20... Nf4 $2 {[%mdl 8192]} (20... Nd7 $14) 21. Bxf4 $18 exf4 22. a5 Ba7 23. Reb2 e5 24. Qc2 ({Not} 24. Qxb7+ Qxb7 25. Rxb7 Bb6 $11) 24... Nd7 25. Ng5 (25. Rxb7 $18 Bb6 26. R7xb6 (26. a6 Nc5 $11 {[%mdl 64] Double Attack}) 26... cxb6 27. axb6) 25... Nc5 $16 26. Nf7 {[%mdl 64] Double Attack} g5 {[%mdl 32768] Weighted Error Value: White=0.25/Black=0.47. Loss on time!?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.9"]
[White "Kamara, Ansumana"]
[Black "Oatlhotse, Providence"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "1899"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,64,65,43,36,52,127,18,108,71,118,58,66,-179,-168,-419,-439,-436,-401,-549,-544,-640,-644,-844,-834,-814,-800,-807,-474,-465,-459,-544,-543,-536,-519,-555,-553,-691,-677,-667,-661,-674,-675,-29979,-29979,-29979,-29975]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. f3 Be7 8. Qd2 O-O 9. O-O-O b5 10. g4 Bb7 11. h4 b4 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack.} 12. Nce2 Nfd7 ({Black should try} 12... d5 $14) 13. g5 (13. Qxb4 $16 Qc7 14. Qc3) 13... Ne5 {[#]} (13... d5 $11) 14. Ng3 $146 ({Predecessor:} 14. Qxb4 Qc7 15. Qc3 Rc8 16. Qxc7 Rxc7 17. Nc3 Nbd7 18. Rh3 Nc4 19. Bxc4 Rxc4 20. h5 {½-½ (45) Hallengren,B (2245)-Rooms,T (2268) IECG email 2002}) 14... Qc7 {[#]} 15. h5 ({Much weaker is} 15. Qxb4 $6 d5 $11) (15. f4 $1 $16) 15... Nbc6 $14 16. g6 $2 {White does not recover from this.} (16. Nxc6 $14 {stays ahead.} Qxc6 17. h6) 16... Nxd4 $19 ({Not} 16... hxg6 $2 17. hxg6 Nxg6 18. Ndf5 $18) 17. gxf7+ $2 (17. gxh7+ {was necessary.} Kxh7 18. h6) 17... Rxf7 {Strongly threatening ...b3!} 18. Bxd4 Nxf3 19. Qxb4 d5 (19... Rc8 $2 20. Qb3 $19) 20. Qc3 Qxg3 21. Rg1 Qf4+ {[%mdl 64] [#] Double Attack} 22. Be3 Qxe4 {And now ...d4! would win.} 23. Bg2 Qxe3+ 24. Qxe3 Bg5 25. Rge1 Bxe3+ 26. Rxe3 Ng5 27. Re5 h6 28. c4 Rc8 29. b3 dxc4 30. Bxb7 Rxb7 31. bxc4 Rxc4+ 32. Kd2 Nf3+ {[%mdl 64] Double Attack.  Weighted Error Value: White=1.22/Black=0.36} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.10"]
[White "Miguel, Sergio"]
[Black "Joelson, Ricardo"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "2377"]
[BlackElo "2017"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,79,37,50,51,44,43,202,183,201,175,189,175,197,194,180,169,254,253,227,244,239,238,293,276,260,260,353,357,532,440,521,465,465,465,460,460,458,458,458,448,462,457,752,623,685,502,425,324,6494,6617,29974,29973,29975,29976,29976,29977,29976,29974]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4 11. Bxb4 Nd7 12. a4 f5 13. Ng5 {Hoping for Ne6. E97: King's Indian: Classical Main Line (6...e5 7 0-0 Nc6): 8 Be3 and 8 d5 Ne7, not 9 Ne1.} Nf6 14. c5 h6 $2 ({Black should try} 14... fxe4 $14 15. cxd6 (15. Ngxe4 Nxe4 16. Nxe4 Nf5 $11) (15. Ncxe4 Nxe4 16. Nxe4 Nf5 $11) 15... cxd6) 15. cxd6 $18 {White is clearly better.} cxd6 16. Ne6 Bxe6 17. dxe6 {[#]} Nxe4 $146 ({Predecessor:} 17... Ne8 18. Nb5 Ra6 19. Bf3 f4 20. Ra2 Kh7 21. Rd2 Nc8 22. Qb3 Bf6 23. Rfd1 Be7 {1-0 (50) Cherednichenko,D (2275)-Ozer,O (2341) Sochi 2016}) 18. Nxe4 fxe4 19. Qxd6 Nf5 (19... Bf6 $142 20. Rfb1 Qc8) 20. Qxd8 Rfxd8 21. e7 Rd4 {[#]} 22. Bb5 $1 Rxb4 (22... Kf7 23. e8=Q+) 23. e8=R+ Rxe8 24. Bxe8 g5 25. Rfb1 Rxb1+ 26. Rxb1 {[%mdl 4096] Endgame KRB-KBN} Nd6 {[#]} 27. a5 $1 Nxe8 28. Rxb7 {Strongly threatening a6.} Bf8 29. a6 {Threatening mate with a7.} Bc5 30. a7 Bxa7 31. Rxa7 {KR-KN} Nd6 32. Kf1 Nf7 (32... e3 $142 33. Ra6 Nf5) 33. Ke2 Kg7 34. Ke3 Kf6 35. Ra6+ Kg7 $2 (35... Kf5 36. h3 h5 37. g4+ hxg4) 36. Kxe4 Nh8 37. g3 {White mates.} Ng6 38. Kf5 Ne7+ 39. Kxe5 Ng6+ 40. Kf5 {White took control after the opening.  Weighted Error Value: White=0.17/Black=0.61} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.11"]
[White "Bongo Akanga Ndjila, Barthelemy"]
[Black "Oliveira, Luciano"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "1803"]
[BlackElo "2115"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,124,15,9,56,10,23,25,26,-104,-102,-156,-133,-197,-185,-195,-104,-115,-108,-107,-110,-131,-134,-129,-106,-137,-109,-138,-139,-141,-135,-146,-137,-143,-133,-161,-183,-163,-127,-147,-147,-156,-158,-158,-154,-206,-156,-242,-242,-261,-206,-220,-164,-280,-281,-322,-314,-339,-301,-330,-337,-330,-324,-313,-257,-318,-311,-404,-325,-459,-448,-577,-577,-752,-395,-360,-322,-2101,-1858,-29972,-29974,-5928,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. e3 c5 5. Nbd2 Nc6 6. c3 h6 7. Bh4 Bd6 8. Bd3 O-O 9. O-O e5 {D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5.} 10. dxe5 Nxe5 11. Nxe5 Bxe5 {White has an edge.} 12. Qc2 {[#]} (12. e4 $11 {keeps the balance.}) 12... Bxh2+ $1 $17 {[%mdl 512] [#]} 13. Kh1 $146 ({Better is} 13. Kxh2 Ng4+ {[%mdl 64] Discovered Attack} 14. Kg1 Qxh4 15. Nf3) ({Predecessor:} 13. Kxh2 Ng4+ 14. Kg3 g5 15. Bf5 gxh4+ 16. Kh3 Qg5 17. Bxg4 Bxg4+ 18. Kh2 Kh8 19. Nf3 {0-1 (27) Rancic,D (1919)-Besedes,D (2306) Novi Sad 2016}) 13... Bc7 14. Bh7+ (14. c4 $17) 14... Kh8 $19 15. Bf5 Qd6 (15... g5 $19 16. Bg3 Bxg3 17. Bxc8 Qxc8 18. fxg3 Nh5) 16. Bg3 Qe7 {White must now prevent ...Bxg3.} 17. Bxc7 Qxc7 18. Nf3 Bxf5 19. Qxf5 Qc8 20. Qf4 Rd8 21. Ne5 Kg8 22. Rad1 Qe6 23. Nf3 Rac8 24. Qa4 a6 25. Qa5 Ne4 26. Kg1 Qf6 27. Nd2 Ng5 28. f4 Ne4 29. Nxe4 dxe4 30. Qa4 {[#]} (30. Rxd8+ $17 Qxd8 31. Qxd8+ Rxd8 32. f5) 30... Qf5 $1 31. Qa5 (31. Qb3 $17 {was worth a try.}) 31... Rd3 32. Qb6 Qd5 ({Don't do} 32... Rxe3 33. Qxb7 Rd3 34. Rde1 $19) 33. Rde1 Qc6 34. Qa5 (34. Qxc6 {was called for.} Rxc6 35. f5) 34... Rcd8 35. Rf2 f5 36. Qa3 Kh7 37. Qb3 c4 38. Qc2 b5 39. Qe2 a5 40. Qh5 Qg6 41. Qh4 R8d7 42. Kh2 (42. Qh3 $142) 42... b4 43. cxb4 axb4 44. Rc2 c3 45. bxc3 bxc3 46. Ree2 $2 (46. Qh3) 46... Rd2 {And now ...Rxe2 would win.} 47. Kg1 Rxc2 48. Rxc2 Rd2 $2 (48... Rd1+ $19 49. Kf2 Qa6) 49. Rxd2 $11 {The position is equal.} cxd2 {[%mdl 4096] Endgame KQ-KQ} 50. Qd8 Qf6 (50... Qb6 {keeps more tension.} 51. Qxd2 Qc6 52. Kf2 g6 53. Kg1 h5) 51. Qxd2 Qa1+ 52. Kf2 h5 53. Qd5 Qb2+ 54. Kg3 g6 55. Qf7+ Kh6 56. Qf8+ Kh7 57. Qf7+ Kh6 58. Kh2 Qf2 59. Qf8+ Kh7 60. Qf7+ Kh6 61. Qf8+ Kh7 62. Qf7+ Kh6 {Whites escaped into a draw.  Weighted Error Value: White=0.61/Black=0.28} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.12"]
[White "Paiva, Donaldo"]
[Black "Mwashe, Philip"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2230"]
[BlackElo "1756"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,143,20,17,29,29,31,27,46,37,39,37,34,47,55,47,46,50,81,87,71,52,48,40,51,41,47,46,53,30,36,29,41,35,47,47,72,29,35,25,28,16,78,78,57,62,143,78,97,89,93,38,49,14,32,0,0,-10,0,-3,25,0,0,-6,0,-10,-10,-10,-10,-25,0,0,0,-41,-37,-117,0,-33,-26,-38,-8,0,0,-8,-19,-53,-8,-8,-8,-11,-8,-145,-145,-217,-201,-194,-18,-18,-20,-992,118,125,139,157,94,83,125,122,129,127,760,290,302,300,277,279,304,300,293,284,284,270,29975,29976,29974,29968,29987,29988,29988,29989]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. Nf3 d6 6. O-O e5 7. d3 Nc6 8. Rb1 a6 9. b4 Nd7 {A26: English Opening vs King's Indian with ...Nc6 and d3.} 10. a4 {[#]} f5 $146 ({Predecessor:} 10... h6 11. b5 axb5 12. axb5 Ne7 13. Bb2 f5 14. Nd2 Rb8 15. Qc2 Nc5 16. Nb3 b6 17. Nxc5 dxc5 {½-½ (39) Syrchikov,A (2399)-Priyanka,K (2134) Moscow 2018}) 11. Bd2 Nf6 {White has an edge.} 12. b5 axb5 13. axb5 Ne7 14. Qb3 Kh8 15. Ra1 Rxa1 16. Rxa1 Be6 17. Ra7 b6 18. Qa4 Nd7 19. Ng5 Bg8 20. Ra8 Nc8 21. Nd5 Nc5 22. Qa3 h6 23. Nf3 Bxd5 24. cxd5 Qd7 25. Qb4 g5 26. Bc3 g4 27. Nd2 Qf7 28. d4 Ne4 (28... exd4 $11 29. Bxd4 Ne7) 29. dxe5 $16 (29. Nxe4 fxe4 30. Be1 Qxd5 $11) 29... Nxc3 30. Qxc3 Bxe5 (30... dxe5 $14 31. Qc6 f4) 31. Qd3 (31. Qc4 $142) 31... Ne7 32. Rxf8+ Qxf8 33. Nc4 (33. Qc2 $16 Qc8 34. h3) 33... Bg7 34. e3 Qa8 35. h4 Qa1+ 36. Kh2 Qe1 37. Qc2 Qb4 (37... Qc3 {keeps more tension.} 38. Qa2) 38. Nd2 (38. e4 {feels hotter.} f4 39. gxf4 h5 40. e5 dxe5 41. Qe4) 38... Qc3 39. Qxc3 Bxc3 $11 {[%mdl 4096] Endgame KBN-KBN} 40. Nc4 Kg7 41. Kg1 Kf6 42. Kf1 Bb4 43. Ke2 Nc8 44. Nb2 Na7 45. Nd3 (45. Kd3 $1 $15) 45... Ba3 (45... Ba5 $17 46. Nc1 Nxb5) 46. Nf4 Nxb5 47. Kd3 Bc5 48. Ne6 c6 49. Nxc5 dxc5 50. dxc6 {KB-KN} Ke6 51. e4 fxe4+ 52. Kxe4 Kd6 53. Kf5 (53. f3 $11 {remains equal.}) 53... c4 $1 $17 54. Kg6 (54. Ke4 $17) 54... Nd4 $19 55. Kxh6 Nf3 $2 (55... Nxc6 56. Kg5 $11) (55... b5 $19 56. Be4 b4) 56. Bf1 $1 $11 {[%cal Rf1c4]} b5 57. Kg7 $2 {[%mdl 8192]} (57. h5 $11 c3 58. Bd3) 57... Nd4 $2 ({Black should play} 57... c3 $19 58. Bd3 b4) 58. h5 $16 {aiming for Kf6.} c3 ({Not} 58... Kxc6 $2 59. Kf6 $18) 59. Bd3 b4 {[%cal Bb5b4,Bb4b3][%mdl 32]} ({Avoid the trap} 59... c2 $2 {[#]} 60. Bxc2 $1 {[%mdl 512]} b4 61. h6 $1 $18) 60. h6 b3 61. h7 ({Worse is} 61. c7 Kxc7 62. h7 c2 $17) 61... c2 {Threatens to win with ...Ne6+.} 62. h8=Q Ne6+ $2 {[%mdl 8192]} (62... c1=Q $16) 63. Kf6 $2 (63. Kf7 {White threatens Qf6! and mate.} c1=Q 64. Qf6) 63... c1=Q $18 {( -> ...Qc3+)} 64. Qb8+ {[%mdl 64] Double Attack} Nc7 65. Qxb3 Qh6+ 66. Kf7 Qh5+ 67. Bg6 Qc5 68. Qd3+ Nd5 $2 (68... Kxc6 $18 69. Be4+ Kb6) 69. Be4 {White mates.} Qxf2+ 70. Kg8 Qc5 71. Qxd5+ Qxd5+ 72. Bxd5 {Never resign too early!  Weighted Error Value: White=0.32/Black=0.31} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.13"]
[White "Singe, Philip Mbawala"]
[Black "Abdelazeez, Mohamed Abdalla"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1857"]
[BlackElo "2214"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,67,-51,-32,-81,-76,-150,-44,-46,-47,-95,-56,-148,-145,-105,-92,-107,-70,-61,-52,-37,-37,-52,-64,-227,-199,-242,-252,-283,-250,-422,-441,-435,-416,-422,-414,-372,-250,-245,-248,-967,-956,-937,-932,-1050,-759,-1271,-1210,-2392,-2259,-29998,-29999,-29999]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. f3 O-O 8. Qd2 d5 9. Nxc6 bxc6 10. exd5 {B34: Sicilian: Accelerated Dragon with 5 Nc3: sidelines.} cxd5 11. Bh6 {[#]} (11. O-O-O $142) 11... Rb8 (11... Bxh6 $1 $17 12. Qxh6 Qb6) 12. Bxg7 $15 {Black is slightly better.} Kxg7 {[#]} 13. b3 $146 ({Predecessor:} 13. O-O-O Be6 14. Qd4 Qa5 15. Qa4 Qb6 16. b3 Rfc8 17. Kb2 Rc5 18. Rd2 Rbc8 19. Nd1 {1-0 (46) Zoltan,L (1955)-Csorsz,F (2050) Hungary 2015}) 13... Qa5 14. Nb1 (14. Be2 $15) 14... Qc5 15. Bd3 e5 {aiming for ...e4.} 16. Qf2 Qxf2+ (16... Qb4+ {with more complications.} 17. c3 Qa5 18. O-O Rxb3 19. Re1 Re8) 17. Kxf2 e4 18. Be2 Bf5 19. c4 d4 $36 {[%cal Bd5d4,Bd4d3][%mdl 2080] Threatens to win with ...e3+. Black is more active.} 20. fxe4 {Now White is beyond hope.} ({White should play} 20. Rd1 $15) 20... Nxe4+ $19 21. Ke1 Rfe8 22. Rf1 d3 23. Bf3 (23. Bxd3 {was necessary.} Ng3+ 24. Kf2 Bxd3 25. hxg3 Bxf1 26. Kxf1) 23... Ng3+ $1 {[%mdl 64] Discovered Attack} 24. Kf2 Nxf1 25. Kxf1 g5 26. h3 Re3 27. Nd2 Rbe8 28. Kf2 $2 {[#]} (28. Rd1) 28... Re2+ $1 {[%mdl 512]} 29. Bxe2 Rxe2+ {[%mdl 64] Double Attack} ({Worse is} 29... dxe2 30. Re1 $14) 30. Kf3 Rxd2 {KRB-KR} 31. g4 Bg6 32. Ke3 Re2+ 33. Kf3 Be4+ 34. Kg3 Rg2# {Weighted Error Value: White=1.39/Black=0.36} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.14"]
[White "Njoroge Martin"]
[Black "Simoes, Joao"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "1965"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,99,-23,-20,-37,-22,-35,-25,-48,-4,-19,0,-18,-2,-9,0,-8,-7,-12,3,-22,-33,-30,-16,-26,-31,-53,-70,-183,-47,-61,0,0,0,-88,24,-47,-52,-55,-10,-11,0,0,76,70,82,0,0,0,29,0,43,0,0,-2,0,0,2,8,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,131,120,107,10,14,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. d3 Bd6 6. Nbd2 {A08: King's Indian Attack.} Nge7 7. e4 d4 8. a4 {Black has an edge.} h6 9. Nc4 Bc7 10. c3 Be6 11. cxd4 {[#]} exd4 $146 ({Predecessor:} 11... cxd4 12. Bd2 a6 13. Ne1 g5 14. b4 b5 15. axb5 axb5 16. Na3 Rb8 17. Rc1 Bd6 {½-½ (63) Maki,V (2410)-Nadanian,A (2325) Yerevan 1996}) 12. b3 Qd7 13. Ne1 g5 14. f4 gxf4 15. Bxf4 Bxf4 16. Rxf4 Ng6 17. Rf1 h5 18. h4 ({White should try} 18. e5 $15) 18... Nge5 (18... Qc7 $19 19. Qf3 O-O-O) 19. Nf3 $15 Nxf3+ (19... Ng4 $15) 20. Qxf3 $11 O-O-O 21. a5 (21. Kh2 $11 {remains equal.}) 21... Qc7 (21... Rdg8 $1 $17 {White must now prevent ...Rg6.} 22. e5 Bxc4 23. bxc4 Nxe5) 22. Qf4 (22. e5 $1 $11) 22... Rhg8 23. Kh2 Qxf4 (23... Rg7 {looks sharper.} 24. Bf3 Nb4 25. Qxc7+ Kxc7 26. Be2 Rdg8) 24. Rxf4 Kc7 25. Bh3 Bxc4 (25... Rg7 $11) 26. bxc4 $16 Ne5 {[#]} 27. Rd1 (27. Rf5 $1 $16 {[%cal Rf5e5]} f6 28. Rxh5) 27... Rde8 $11 28. Rf5 Rh8 29. Rb1 Re7 30. Rb3 Rh6 31. Kg2 f6 32. Rf1 Rhh7 33. Rxf6 {Hoping for Rf8.} Rhf7 (33... Ref7 $5 {[%cal Rf7f6]} 34. Rf4 Rhg7 $11) 34. Rxf7 (34. Rf4 {is interesting.} Ng6 35. Rf5 Rxf5 36. exf5 Ne5 37. Kf2) 34... Rxf7 {[%mdl 4096] Endgame KRB-KRN} 35. Bf5 Rf8 36. Kh3 Rg8 37. Be6 Rg6 38. Bf5 Rg8 39. Be6 Rg6 40. Bf5 Rg7 41. Ra3 Kd6 42. Rb3 Rc7 (42... Kc7 $11) 43. g4 $16 hxg4+ {[#]} 44. Bxg4 ({Better is} 44. Kg3 $1 $16) 44... Rg7 $11 {The position is equal.} 45. Bf5 Nf3 46. h5 Ng1+ 47. Kh4 {aiming for Bg4.} Nf3+ 48. Kh3 Ng1+ 49. Kh4 {Strongly threatening Bg4.} Nf3+ 50. Kh3 {Weighted Error Value: White=0.21/Black=0.24} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.15"]
[White "Meftahi, Houssem"]
[Black "Likoko, Elvis"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2110"]
[BlackElo "1646"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,44,24,23,-31,16,-100,8,-12,0,-29,-28,-39,-24,-310,-303,-579,-541,-676,-674,-616,-505,-490,-507,-857,-834]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. Bd3 b5 8. a3 Bb7 9. O-O Nc6 10. Nxc6 Qxc6 11. Qe2 Be7 12. Rad1 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6 without Be2.} (12. f4 $11) 12... O-O (12... Bxa3 $5 13. Nxb5 Bxb2 $11) 13. f4 {[#]} (13. Bd4 $11) 13... Bc5 $146 (13... Bxa3 $1 $17 14. Nxb5 (14. bxa3 Qxc3) 14... Bxb2) ({Predecessor:} 13... b4 14. axb4 Bxb4 15. Nb1 Bc5 16. Bxc5 Qxc5+ 17. Kh1 d5 18. e5 Ne4 19. Nd2 {½-½ (19) Tompa,J (2395)-Gerstner,W (2380) Germany 2004}) 14. Rf3 {The position is equal.} d5 {[%cal Rd5e4]} 15. exd5 (15. e5 $5 {[%cal Re5f6]} Ne4 16. Bxc5 Qxc5+ 17. Kf1 $11) 15... exd5 16. Bxc5 $1 Qxc5+ 17. Kh1 $2 {[%mdl 8192] [#] Loses the game.} (17. Qf2 $1 $11 {and White is okay.} Qxf2+ 18. Rxf2) 17... d4 $1 $19 {[%csl LRc3,LRf3]} 18. Be4 {[#]} (18. Qf2 {was worth a try.} Rac8 19. Ne2 Bxf3 20. gxf3) 18... Rfe8 $1 {Black is clearly winning.} 19. b4 (19. Bxb7 Rxe2) 19... Qb6 20. Bxb7 Qxb7 21. Qd2 dxc3 22. Rxc3 (22. Qxc3 $142 Ne4 23. Qe1) 22... Ne4 {[%mdl 64] Double Attack.  Weighted Error Value: White=1.23/Black=0.30} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.16"]
[White "Calicoca, Wilton Inacio"]
[Black "Maazouzi, Youssef"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2122"]
[Annotator "RC"]
[PlyCount "49"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:10]} Nc6 {[%emt 0:00:04]} 3. Bc4 {[%emt 0:00:07]} Nf6 {[%emt 0:00:02]} 4. Nc3 {[%emt 0:00:03]} h6 {[%emt 0:00:27]} 5. d4 {[%emt 0:00:07]} exd4 {[%emt 0:00:15]} 6. Nxd4 {[%emt 0:00:04]} Ne5 {[%emt 0:01:14]} 7. Bb3 {[%emt 0:00:38]} Bb4 {[%emt 0:01:12]} 8. f4 {[%emt 0:00:13]} Ng6 {[%emt 0:02:04]} 9. e5 {[%emt 0:00:31]} Ne4 {[%emt 0:00:12]} 10. Qd3 {[%emt 0:00:12]} Nc5 {[%emt 0:00:33]} 11. Qc4 {[%emt 0:00:10]} Bxc3+ {[%emt 0:00:42]} 12. bxc3 {[%emt 0:00:10]} Nxb3 {[%emt 0:00:03]} 13. axb3 {[%emt 0:00:05]} O-O {[%emt 0:01:14]} 14. O-O {[%emt 0:00:10]} b6 {[%emt 0:01:24]} 15. Qd5 {[%emt 0:00:26]} c6 {[%emt 0:00:47]} 16. Qd6 {[%emt 0:00:04]} Bb7 {[%emt 0:00:11]} 17. f5 {[%emt 0:00:09]} Ne7 {[%emt 0:00:55]} 18. f6 {[%emt 0:00:09]} Nc8 {[%emt 0:00:40]} 19. Qa3 {[%emt 0:00:38]} g5 {[%emt 0:01:49]} 20. Nf5 {[%emt 0:00:16]} Kh7 {[%emt 0:00:33]} 21. Qa4 {[%emt 0:00:40]} Qc7 {[%emt 0:01:01]} 22. Qe4 {[%emt 0:01:05]} Kh8 {[%emt 0:01:43]} 23. Bxg5 {[%emt 0:01:40]} c5 {[%emt 0:00:31]} 24. Qh4 {[%emt 0:00:11]} Qc6 {[%emt 0:01:01]} 25. Qxh6+ {[%emt 0:00:08]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.17"]
[White "Pascoal, Eduardo A"]
[Black "Simpson, Michael M"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2184"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,110,10,-8,-3,-21,-8,-12,3,-2,1,-27,-13,-15,6,0,0,0,54,50,47,17,26,0,0,0,108,23,32,0,9,0,0,0,0,0,0,0,0,0,0,0,23,23,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-216,-212,-999,-966,-2101,-2073,-12835,-12835,-12837,-12837,-12837,-12838,-12838,-12839,-12839,-12839,-12840,-12840,-12841,-12841,-12842,-12843,-12844,-12844,-12845,-12845,-12846,-12847,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999]} 1. d4 d5 2. Nf3 Bf5 3. Bf4 e6 4. e3 Bd6 5. Bg3 Nf6 6. Nbd2 O-O {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} 7. Ne5 Nbd7 8. Bd3 {[#]} Ne4 $146 {The position is equal.} ({Predecessor:} 8... Bxe5 9. dxe5 Ng4 10. Bxf5 exf5 11. Nf3 Qe7 12. Qxd5 Nc5 13. h3 Nxe3 14. fxe3 Ne4 {0-1 (27) Gochelashvili,D (2432)-Morozevich,A (2676) Sochi 2017}) 9. Nxd7 Qxd7 10. Nf3 h6 11. c3 Bg4 {[#]} 12. Ne5 $1 Bxe5 13. Qxg4 Nf6 14. Qf3 Bd6 15. Bf4 Bxf4 16. exf4 Rac8 17. g4 Nh7 (17... c5 $11) 18. g5 ({Better is} 18. h4 $16) 18... hxg5 $11 19. Bxh7+ Kxh7 20. Qh5+ Kg8 21. fxg5 e5 22. dxe5 Qf5 23. O-O Qxe5 24. Rae1 {[%cal Ba1e1,Be1e3,Be3e6][%mdl 32]} Qf5 25. Re3 Qg6 (25... Rce8 {seems wilder.} 26. Rh3 f6 27. gxf6 Qxh5 28. Rxh5 Rxf6 29. Rxd5 Re2) 26. Qxg6 fxg6 {[%mdl 4096] Endgame KRR-KRR} 27. Re6 Rce8 28. Rfe1 Kf7 29. R6e5 c6 30. Kg2 Rxe5 31. Rxe5 Re8 32. Rxe8 Kxe8 {KP-KP} 33. Kf3 Ke7 34. Kg4 Ke6 35. f4 $2 {[#] White is on the road to losing.} (35. Kf4 $11 {and White stays safe.}) 35... c5 $1 $19 36. h4 $2 (36. a4) 36... d4 37. cxd4 cxd4 38. b4 b5 39. a3 a6 40. Kg3 Kf5 41. Kf3 d3 42. Ke3 d2 $1 {[%cal Rd2d1][%mdl 64] Deflection} 43. Kxd2 Kxf4 44. Kd3 Kg4 45. Kd4 Kxh4 46. Kc5 Kxg5 47. Kb6 Kf5 48. Kxa6 g5 49. Kxb5 {KPP-KPP} g4 {Black mates.} 50. a4 g3 51. a5 g2 52. a6 g1=Q 53. a7 Qxa7 {( -> ...g5)} 54. Kc6 Qa6+ 55. Kc5 Qb7 {Weighted Error Value: White=0.63/Black=0.09} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.18"]
[White "Hamzaoui, Khalil"]
[Black "Fernandes, Avelino"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1883"]
[BlackElo "1887"]
[Annotator "NA RC"]
[PlyCount "113"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} f5 {[%emt 0:00:06]} 2. Nc3 {[%emt 0:00:30]} e6 {[%emt 0:00:27]} 3. e4 {[%emt 0:00:07]} fxe4 {[%emt 0:00:10]} 4. Nxe4 {[%emt 0:00:05]} Nf6 {[%emt 0:02:27]} 5. Nxf6+ {[%emt 0:00:10]} Qxf6 {[%emt 0:00:04]} 6. Nf3 {[%emt 0:00:02]} Nc6 {[%emt 0:00:18]} 7. Bg5 {[%emt 0:00:41]} Qf7 {[%emt 0:00:15]} 8. Qd2 {[%emt 0:00:17]} Bd6 {[%emt 0:00:12]} 9. O-O-O {[%emt 0:00:18]} O-O {[%emt 0:00:25]} 10. Kb1 {[%emt 0:00:12]} h6 {[%emt 0:00:13]} 11. Be3 {[%emt 0:00:07]} Nb4 {[%emt 0:00:20]} 12. Ne5 {[%emt 0:04:22]} Qf6 {[%emt 0:04:12]} 13. g4 {[%emt 0:00:52]} Nd5 {[%emt 0:02:05]} 14. g5 {[%emt 0:00:02]} hxg5 {[%emt 0:00:05]} 15. Bxg5 {[%emt 0:00:04]} Qxf2 {[%emt 0:00:02]} 16. Be2 {[%emt 0:00:51]} Nf4 {[%emt 0:00:09] [#]} 17. Rde1 $1 {[%emt 0:05:35]} c5 {[%emt 0:00:27]} 18. Rhf1 {[%emt 0:00:06]} Qxd4 {[%emt 0:00:05]} 19. Qxd4 {[%emt 0:02:32]} cxd4 {[%emt 0:00:05]} 20. Bxf4 {[%emt 0:00:10]} Rxf4 {[%emt 0:00:07]} 21. Rxf4 {[%emt 0:01:17]} Bxe5 {[%emt 0:00:04]} 22. Rg4 {[%emt 0:00:07]} Bf6 {[%emt 0:00:09]} 23. h4 {[%emt 0:00:10]} (23. Rf1 $5 {[%cal Rf1f6]} Kf7 24. Rxd4 $14) 23... d6 {[%emt 0:00:12]} 24. h5 {[%emt 0:00:22]} e5 {[%emt 0:00:03]} 25. Bc4+ {[%emt 0:00:06]} Kh8 {[%emt 0:00:08]} 26. Rg2 {[%emt 0:00:20]} Bd7 {[%emt 0:00:05]} 27. h6 {[%emt 0:00:16]} g5 {[%emt 0:00:20]} 28. Rf2 {[%emt 0:00:20]} Be7 {[%emt 0:00:25]} 29. Rf7 {[%emt 0:00:17]} Re8 {[%emt 0:00:03]} 30. Bd3 {[%emt 0:00:46]} Be6 {[%emt 0:00:10]} 31. Rh7+ {[%emt 0:00:03]} Kg8 {[%emt 0:00:05]} 32. Rg7+ {[%emt 0:00:01]} Kh8 {[%emt 0:00:03]} 33. Bg6 {[%emt 0:00:03]} Bf6 {[%emt 0:00:19]} 34. Bxe8 {[%emt 0:00:07]} Bxg7 {[%emt 0:00:02]} 35. hxg7+ {[%emt 0:00:02]} Kxg7 {[%emt 0:00:02]} 36. Kc1 {[%emt 0:01:04]} Bf5 {[%emt 0:00:12]} 37. Rf1 {[%emt 0:00:28]} Bh3 {[%emt 0:00:09]} 38. Rf7+ {[%emt 0:00:04]} Kh6 {[%emt 0:00:02]} 39. Rf6+ {[%emt 0:00:15]} Kh7 {[%emt 0:00:04]} 40. Rxd6 {[%emt 0:00:18]} Bg2 {[%emt 0:00:20]} 41. Rg6 {[%emt 0:00:46]} Bc6 {[%emt 0:00:05]} 42. Rxg5 {[%emt 0:00:27]} Bxe8 {[%emt 0:00:04]} 43. Rxe5 {[%emt 0:00:01]} Bc6 {[%emt 0:00:01]} 44. Kd2 {[%emt 0:00:08]} Kg6 {[%emt 0:00:02]} 45. Kd3 {[%emt 0:00:02]} Kf6 {[%emt 0:00:05]} 46. Kxd4 {[%emt 0:00:01]} a6 {[%emt 0:00:01]} 47. Re1 {[%emt 0:00:23]} Kf5 {[%emt 0:00:06]} 48. c3 {[%emt 0:00:10]} a5 {[%emt 0:00:09]} 49. a3 {[%emt 0:00:04]} a4 {[%emt 0:00:02]} 50. Kc5 {[%emt 0:00:02]} Kf6 {[%emt 0:00:06]} 51. Kb6 {[%emt 0:00:28]} Kf5 {[%emt 0:00:04]} 52. c4 {[%emt 0:00:04]} Kf6 {[%emt 0:00:03]} 53. c5 {[%emt 0:00:01]} Kf5 {[%emt 0:00:03]} 54. Re2 {[%emt 0:00:16]} Kf6 {[%emt 0:00:04]} 55. Re3 {[%emt 0:00:06]} Kf5 {[%emt 0:00:03]} 56. Re7 {[%emt 0:00:02]} Kf6 {[%emt 0:00:02]} 57. Rxb7 {[%emt 0:00:02]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.19"]
[White "Mosutha, Thuso"]
[Black "Strovsky, Mikhail"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2036"]
[BlackElo "2164"]
[Annotator "RC"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:08]} Nf6 {[%emt 0:00:02]} 3. Nc3 {[%emt 0:00:31]} Bb4 {[%emt 0:00:04]} 4. Nxe5 {[%emt 0:00:17]} O-O {[%emt 0:00:05]} 5. Nf3 {[%emt 0:01:01]} Re8 {[%emt 0:00:27]} 6. e5 {[%emt 0:00:29]} d6 {[%emt 0:00:22]} 7. Bb5 {[%emt 0:01:29]} c6 {[%emt 0:00:29]} 8. Bc4 {[%emt 0:01:59]} dxe5 {[%emt 0:01:26]} 9. O-O {[%emt 0:00:15]} h6 {[%emt 0:00:47]} 10. a3 {[%emt 0:00:18]} Ba5 {[%emt 0:01:09]} 11. h3 {[%emt 0:00:18]} Bc7 {[%emt 0:00:49]} 12. Re1 {[%emt 0:00:12]} Nbd7 {[%emt 0:00:30]} 13. d3 {[%emt 0:00:06]} Nb6 {[%emt 0:01:23]} 14. Bb3 {[%emt 0:01:46]} Bf5 {[%emt 0:02:20]} 15. Nh4 {[%emt 0:03:35]} Bh7 {[%emt 0:04:43]} 16. Qf3 {[%emt 0:00:15]} Nbd5 {[%emt 0:01:03]} 17. Nf5 {[%emt 0:07:58]} Bxf5 {[%emt 0:04:21]} 18. Qxf5 {[%emt 0:00:04]} Nxc3 {[%emt 0:00:21]} 19. bxc3 {[%emt 0:00:05]} Qd7 {[%emt 0:01:09]} 20. Qxd7 {[%emt 0:00:55]} Nxd7 {[%emt 0:00:06]} 21. Be3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:45]} 22. Reb1 {[%emt 0:00:15]} b6 {[%emt 0:01:10]} 23. Ba4 {[%emt 0:01:47]} b5 {[%emt 0:01:57]} 24. Bb3 {[%emt 0:00:04]} a6 {[%emt 0:00:28]} 25. c4 {[%emt 0:00:04]} Rab8 {[%emt 0:01:20]} 26. cxb5 {[%emt 0:00:05]} cxb5 {[%emt 0:00:26]} 27. a4 {[%emt 0:00:17]} b4 {[%emt 0:00:18]} 28. a5 {[%emt 0:00:10]} Red8 {[%emt 0:00:23]} 29. Bc4 {[%emt 0:00:05]} Rd6 {[%emt 0:00:34]} 30. Bc5 {[%emt 0:00:15]} Rc6 {[%emt 0:00:09]} 31. Bxb4 {[%emt 0:00:11]} Rc8 {[%emt 0:00:12]} 32. Bd2 {[%emt 0:00:21]} e4 {[%emt 0:00:07]} 33. Rb7 {[%emt 0:00:21]} exd3 {[%emt 0:00:08]} 34. cxd3 {[%emt 0:00:04]} Ne8 {[%emt 0:00:08]} 35. Bb4 {[%emt 0:00:19]} Rb8 {[%emt 0:00:13]} 36. Rxb8 {[%emt 0:00:16]} Bxb8 {[%emt 0:00:02]} 37. Re1 {[%emt 0:00:03]} Nc7 {[%emt 0:00:46]} 38. g3 {[%emt 0:00:14]} Ne6 {[%emt 0:00:10]} 39. Kg2 {[%emt 0:00:26]} Kh7 {[%emt 0:00:11]} 40. Bd5 {[%emt 0:00:29]} Rc2 {[%emt 0:00:07]} 41. d4 {[%emt 0:01:42]} Rb2 {[%emt 0:00:17]} 42. Bc3 {[%emt 0:00:06]} Rb5 {[%emt 0:00:08]} 43. Bc4 {[%emt 0:00:13]} Rg5 {[%emt 0:00:10]} 44. Bxa6 {[%emt 0:00:17]} Nf4+ {[%emt 0:00:05]} 45. Kh2 {[%emt 0:00:06]} Nd3 {[%emt 0:00:03]} 46. Bxd3+ {[%emt 0:00:05]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.20"]
[White "Vermaak, Ashley Christopher"]
[Black "Ebersohn, Raymond Gerhard"]
[Result "1-0"]
[ECO "D97"]
[WhiteElo "1751"]
[BlackElo "1726"]
[Annotator "NA RC"]
[PlyCount "49"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:10]} 2. c4 {[%emt 0:00:05]} g6 {[%emt 0:00:20]} 3. Nc3 {[%emt 0:00:06]} d5 {[%emt 0:00:08]} 4. Nf3 {[%emt 0:00:04]} Bg7 {[%emt 0:00:04]} 5. Qb3 {[%emt 0:00:04]} dxc4 {[%emt 0:00:03]} 6. Qxc4 {[%emt 0:00:02]} O-O {[%emt 0:00:01]} 7. e4 {[%emt 0:00:02]} a6 {[%emt 0:00:02]} 8. Be2 {[%emt 0:02:15]} b5 {[%emt 0:00:09]} 9. Qb3 {[%emt 0:00:37]} Bb7 {[%emt 0:00:10]} 10. e5 {[%emt 0:00:54]} Nd5 {[%emt 0:00:11]} 11. O-O {[%emt 0:00:09]} e6 {[%emt 0:00:43]} 12. Bg5 {[%emt 0:01:16]} Qd7 {[%emt 0:00:05]} 13. a4 {[%emt 0:00:18]} Nxc3 {[%emt 0:00:10]} 14. bxc3 {[%emt 0:01:30]} Bd5 {[%emt 0:00:04]} 15. c4 {[%emt 0:01:32]} bxc4 {[%emt 0:01:03]} 16. Bxc4 {[%emt 0:00:04]} Bxf3 {[%emt 0:01:43]} 17. Qxf3 {[%emt 0:00:06]} Nc6 {[%emt 0:00:15]} 18. Bf6 {[%emt 0:02:04]} Nxd4 {[%emt 0:03:44]} 19. Qd3 {[%emt 0:00:05]} a5 {[%emt 0:00:39]} 20. Rfd1 {[%emt 0:04:23]} c5 {[%emt 0:00:40]} 21. Bb5 {[%emt 0:01:22]} Qc7 {[%emt 0:00:06]} 22. Rac1 {[%emt 0:00:16]} Nxb5 {[%emt 0:00:10]} 23. Qxb5 {[%emt 0:00:13]} Rfc8 {[%emt 0:00:06]} 24. Rd7 {[%emt 0:01:39]} Qc6 {[%emt 0:02:15]} 25. Rd8+ {[%emt 0:02:51]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.21"]
[White "Monaheng Motlomelo"]
[Black "Alberto, Manuel"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1538"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "24"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,24,27,0,46,16,23,16,4,-25,0,-52,-55,-54,105]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Be2 Qb6 {B94: Sicilian Najdorf: 6 Bg5 Nbd7.} 8. Qd2 {[#]} Qxb2 $146 ({Predecessor:} 8... h6 9. Be3 Qc7 10. O-O e6 11. a4 Ne5 12. f3 Nc4 13. Bxc4 Qxc4 14. a5 Bd7 15. Nce2 {0-1 (32) Kirillov,M (1912)-Okrugin,S (2334) Yaroslavl 2018}) 9. Rb1 Qa3 10. O-O e6 11. f4 (11. Nb3 $11) 11... Qc5 $15 {[#] And now ...e5 would win.} 12. Kh1 b5 $2 {[%mdl 32768] Weighted Error Value: White=0.28/Black=0.11. Loss on time!?} (12... Be7 $15 {stays ahead.}) 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.22"]
[White "Ndegwa, Jackson Kamau"]
[Black "Khalema, Sechaba"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2001"]
[BlackElo "1827"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,94,0,-36,-14,-31,14,-17,-39,-129,-104,-98,-99,-170,-172,-260,-252,-260,-261,-245,-235,-295,-295,-292,-289,-379,-320,-313,-333,-354,-285,-272,-219,-308,-240,-345,-262,-334,-341,-349,-345,-324,-325,-427,-450,-497,-500,-597,-463,-555,-429,-421,-418,-664,-655,-894,-845,-836,-856,-802,-801,-856,-854,-848,-826,-1113,-1140,-1354,-1241,-1355,-1365,-1275,-1211,-29974,-1505,-29977,-29978]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5 Nxd5 10. O-O O-O 11. h3 Bf5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 12. Rc1 Bg6 13. Qb3 {[#]} Na5 $1 {[#] The position is equal.} 14. Qb5 $146 (14. Qa3 $15 Nxc4 15. Nxc4) ({Predecessor:} 14. Qa3 Nxc4 15. Nxc4 Nf4 16. Rcd1 Qd5 17. Nce5 a6 18. Rfe1 Rfe8 19. Kh2 {0-1 (48) Acor,C (2223)-Aloma Vidal,R (2437) Chess.com INT 2020}) 14... c6 $17 15. Qc5 Nxc4 16. Nxc4 {[#]} (16. Qxc4 $17 {is a better defense.} Nf4 17. d5) 16... Nf4 $1 $19 17. Rfe1 (17. Ra1 $142) 17... Nd3 $1 {[%csl LRc1,LRc5,LRe1][%mdl 64] Double Attack} 18. Qa3 Nxc1 19. Rxc1 Re8 20. Nce5 Be4 21. Qb3 Re7 22. Ng5 Bd5 (22... Rxe5 23. Nxf7 Rb5 24. Nh6+ Kh8 25. Nf7+ Kg8 26. Nh6+ Kh8 27. Nf7+ Kg8 $11) 23. Qd3 g6 {White must now prevent ...Rxe5!} ({Weaker is} 23... Rxe5 24. Qxh7+ Kf8 25. Qh8+ Ke7 26. Qxd8+ Kxd8 27. dxe5 $11) 24. Ng4 Re8 (24... Bxa2 25. d5 $15) 25. Nf3 f6 ({Less strong is} 25... Bxa2 26. b3 $17) 26. b3 (26. Nd2 {was called for.}) 26... Qd6 27. Nh4 (27. Ne1 $142) 27... Kg7 28. Ne3 Qf4 29. g3 Qe4 30. Qxe4 Bxe4 ({Don't take} 30... Rxe4 31. Nxd5 cxd5 32. Rc7+ Kg8 33. Ng2 $19) 31. Nc4 {White hopes to continue with Nd6.} Rad8 32. Ne3 Rxd4 33. f3 Bd3 34. Kf2 Rdd8 35. Nhg2 g5 36. f4 (36. h4 $142) 36... Be4 37. Rd1 Bxg2 38. Rxd8 Rxd8 39. Kxg2 {[%mdl 4096] Endgame KR-KN} Rd2+ 40. Kf3 Rxa2 41. Nf5+ Kg6 42. Nd6 Rb2 43. f5+ Kg7 44. Ne8+ Kf7 45. Nd6+ Ke7 46. Nc8+ Kd8 (46... Kd7 $142 47. Nxa7 Rxb3+ 48. Kf2 Ra3 49. g4 Rxa7 50. Ke3 Ra3+ 51. Ke2 Rxh3 52. Kf2 b5 53. Kg2 Rc3 54. Kf2 b4 55. Ke2 b3 56. Kd2 Rc2+ 57. Kd3 Ke7 58. Kd4 b2 59. Ke4 b1=Q 60. Kd4 Qb3 61. Ke4 Rc4#) 47. Nxa7 Rxb3+ {White got outplayed after the opening.  Weighted Error Value: White=0.64/Black=0.23} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "3.23"]
[White "Sang, Ricky"]
[Black "El Kouri, Abdallah lamine"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1991"]
[Annotator "RC"]
[PlyCount "103"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} d6 {[%emt 0:00:04]} 2. Bf4 {[%emt 0:00:08]} Nf6 {[%emt 0:08:43]} 3. e3 {[%emt 0:01:09]} e6 {[%emt 0:00:07]} 4. Nd2 {[%emt 0:00:10]} Be7 {[%emt 0:00:03]} 5. Bd3 {[%emt 0:00:11]} c6 {[%emt 0:00:06]} 6. Ngf3 {[%emt 0:00:20]} Qc7 {[%emt 0:00:06]} 7. Rc1 {[%emt 0:00:18]} Nbd7 {[%emt 0:00:04]} 8. e4 {[%emt 0:00:40]} O-O {[%emt 0:00:13]} 9. O-O {[%emt 0:00:04]} a6 {[%emt 0:00:06]} 10. c4 {[%emt 0:00:10]} c5 {[%emt 0:00:13]} 11. Bg3 {[%emt 0:01:39]} b6 {[%emt 0:00:18]} 12. Re1 {[%emt 0:00:09]} Bb7 {[%emt 0:00:05]} 13. h3 {[%emt 0:01:01]} h6 {[%emt 0:00:45]} 14. e5 {[%emt 0:01:16]} Ne8 {[%emt 0:00:24]} 15. d5 {[%emt 0:03:13]} exd5 {[%emt 0:00:42]} 16. e6 {[%emt 0:00:24]} Ndf6 {[%emt 0:00:26]} 17. exf7+ {[%emt 0:00:10]} Rxf7 {[%emt 0:00:06]} 18. Bg6 {[%emt 0:00:23]} Rf8 {[%emt 0:00:09]} 19. Qe2 {[%emt 0:00:16]} Bd8 {[%emt 0:01:24]} 20. Qe6+ {[%emt 0:01:19]} Kh8 {[%emt 0:00:18]} 21. Nh4 {[%emt 0:01:04]} Bc8 {[%emt 0:00:17]} 22. Qe2 {[%emt 0:00:15]} d4 {[%emt 0:00:27]} 23. Bb1 {[%emt 0:00:54]} Rf7 {[%emt 0:01:17]} 24. Ng6+ {[%emt 0:02:13]} Kg8 {[%emt 0:00:08]} 25. Ne4 {[%emt 0:00:41]} Be7 {[%emt 0:00:45]} 26. Nxe7+ {[%emt 0:00:28]} Qxe7 {[%emt 0:00:12]} 27. Nxf6+ {[%emt 0:00:07]} Qxf6 {[%emt 0:00:38]} 28. Qxe8+ {[%emt 0:00:06]} Rf8 {[%emt 0:00:09]} 29. Qe4 {[%emt 0:00:48]} Be6 {[%emt 0:01:09]} 30. Qxe6+ {[%emt 0:00:10]} Kh8 {[%emt 0:00:13]} 31. Qxf6 {[%emt 0:00:04]} Rxf6 {[%emt 0:00:03]} 32. Re7 {[%emt 0:00:11]} Raf8 {[%emt 0:00:14]} 33. Rce1 {[%emt 0:00:05]} g6 {[%emt 0:00:31]} 34. Re8 {[%emt 0:00:06]} Kg7 {[%emt 0:00:08]} 35. R1e7+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:08]} 36. Rxf8+ {[%emt 0:00:09]} Kxf8 {[%emt 0:00:06]} 37. Rb7 {[%emt 0:00:14]} b5 {[%emt 0:00:26]} 38. cxb5 {[%emt 0:00:03]} axb5 {[%emt 0:00:05]} 39. Rxb5 {[%emt 0:00:02]} Re6 {[%emt 0:00:09]} 40. Kf1 {[%emt 0:00:04]} h5 {[%emt 0:00:10]} 41. Bd3 {[%emt 0:00:06]} g5 {[%emt 0:00:13]} 42. h4 {[%emt 0:00:07]} g4 {[%emt 0:00:23]} 43. a4 {[%emt 0:00:13]} Ke7 {[%emt 0:00:10]} 44. a5 {[%emt 0:00:04]} d5 {[%emt 0:00:04]} 45. Rxc5 {[%emt 0:00:04]} Kf7 {[%emt 0:00:59]} 46. b4 {[%emt 0:00:08]} Re7 {[%emt 0:00:17]} 47. b5 {[%emt 0:00:06]} Ke6 {[%emt 0:00:10]} 48. b6 {[%emt 0:00:10]} Rb7 {[%emt 0:00:12]} 49. Rc7 {[%emt 0:00:04]} Rxc7 {[%emt 0:00:49]} 50. bxc7 {[%emt 0:00:03]} Kd7 {[%emt 0:00:03]} 51. Ba6 {[%emt 0:00:04]} Kc6 {[%emt 0:00:18]} 52. c8=Q# {[%emt 0:00:05]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.1"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Seddaoui, Yamine"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2422"]
[BlackElo "2127"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,101,45,48,35,35,54,26,46,36,73,65,95,24,206,197,206,188,214,199,321,141,133,0,0,-20,27,50,39,0,0,0,22,0,59,67,67,65,71,68,110,65,63,36,86,88,85,72,122,106,111,65,61,0,0,0,0,0,130,122,144,149,149,142,121,138,318,299,329,348,425,338,343,304,570,541,555,491,378,147,147,147,126,133,140,147,404,397,1066,1090,29989,29990]} 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O c6 7. a4 a5 {C41: Philidor Defence.} 8. Re1 Qc7 9. b3 h6 {White has an edge.} 10. Ba3 Nf8 11. Nh4 g6 {[#]} 12. f4 $146 (12. Qd2 $16) ({Predecessor:} 12. Qd2 Ng4 13. Nf3 g5 14. Ne2 Be6 15. d5 Bd7 16. dxc6 bxc6 17. Rad1 Qb6 18. Ng3 {0-1 (41) Torres,J (2178)-Longa Yauca,J (2120) Peru 2000}) 12... Nh5 $2 {[#]} (12... Ng4 $11 {and Black has nothing to worry.} 13. Nf3 exf4) 13. Nf5 $1 $18 {[%mdl 512] Strongly threatening fxe5.} Bxf5 (13... Nxf4 14. Nxe7) 14. exf5 {[%cal Rf4e5]} Nxf4 15. g3 Nh5 (15... Nh3+ $142 16. Kg2 Ng5) 16. fxg6 (16. dxe5 $18 dxe5 17. Bxe7 Qxe7 18. Ne4) 16... fxg6 $16 17. Qf3 (17. dxe5 $16 O-O-O 18. Bxd6 Bxd6 19. exd6 Qxd6 20. Qxd6 Rxd6 21. Ne4) 17... O-O-O $11 18. dxe5 dxe5 19. Bxe7 Qxe7 20. Qe3 Nd7 21. Qa7 Qb4 (21... Nhf6 {seems wilder.} 22. Ne4 Nxe4 23. Rxe4 h5 24. Qa8+ Kc7) 22. Ne4 {aiming for Be6.} (22. Na2 {is interesting.} Qb6+ 23. Qxb6 Nxb6 24. Bd3 Nd7 25. Bxg6 Ng7 26. b4) 22... Qb6+ ({Black should try} 22... Ng7 $11) 23. Qxb6 $14 Nxb6 24. Bf7 Ng7 25. Bxg6 Nd5 26. Nf2 Rd6 27. Be4 Nc3 28. Re3 Nxe4 29. Nxe4 Rd4 30. Rf1 $36 {[%mdl 2048] White has strong initiative.} Rhd8 31. Re2 Ne6 32. Rf6 (32. Ree1 $14) 32... Rd1+ $11 33. Kg2 Nd4 34. Ref2 Rc1 (34... Re1 $11 35. Nd6+ Kc7) 35. Rxh6 $16 Rxc2 36. Rxc2 Nxc2 {[%mdl 4096] Endgame KRN-KRN} 37. Re6 Rf8 {( -> ...Ne3+)} 38. h4 (38. Rxe5 $2 {leads to mate.} Ne3+ 39. Kh3 Rh8+ 40. Rh5 Rxh5#) 38... Nd4 $2 (38... Ne3+ $16 39. Kh2 Kd8) 39. Rxe5 $18 Nxb3 40. h5 Nd4 41. Rxa5 {Threatens to win with Ra8+.} Kc7 42. h6 Ne6 $2 (42... Nf5 43. h7 Ne3+ 44. Kg1 Nd5) 43. Re5 Kd7 44. g4 Rh8 45. g5 (45. h7 $1 $18 {and the rest is easy.}) 45... Nxg5 $16 46. Rxg5 Rxh6 {KRN-KR} 47. Rg7+ Kc8 {[#]} 48. a5 $1 {Nc5 is the strong threat.} Re6 $2 {[%mdl 8192] [#]} (48... Kb8 $16 49. Nc5 Rh5) 49. Kf3 $1 $18 Kb8 $2 (49... Rh6 50. Nc5 Rh3+ 51. Kg2 Ra3 52. Nxb7 Kb8) 50. Nc5 {[%mdl 64] Double Attack} Re5 51. Nd7+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.29/Black=0.64} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.2"]
[White "Amin, Bassem"]
[Black "Adly, Ahmed"]
[Result "1/2-1/2"]
[ECO "D14"]
[WhiteElo "2693"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,32,0,0]} 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 11. O-O O-O 12. Rfc1 Rfc8 {[#]} 13. Ne2 $146 ({Predecessor:} 13. h3 Nd7 14. Nd2 h6 15. a3 Ne7 16. Rc2 Rc6 17. Rac1 Rac8 18. Ne2 Rxc2 19. Rxc2 Rxc2 20. Qxc2 Qc6 21. Qxc6 Nxc6 22. Nc3 Kf8 23. Kf1 {½-½ (30) Wen,Y (2594)-Zhao,J (2638) Xinghua 2020}) 13... Ne7 14. Nc3 Nc6 15. Ne2 Ne7 16. Nc3 Nc6 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.3"]
[White "Ortega Amarelle, Mariano"]
[Black "Bellahcene, Bilel"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "2463"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,136,63,58,54,44,45,46,56,17,32,25,21,12,39,25,36,33,25,12,41,46,52,58,47,49,45,33,45,33,33,33,67,56,38,58,91,92,77,93,77,77,82,82,79,78,109,52,66,65,65,49,64,59,75,77,77,77,151,146,231,226,214,211,212,179,177,170,164,134,134,15,135,0,175,175,187,187,210,200,291,279,433,285,251,239,275,0,0,0,0,0,0,0,0,0,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 e6 2. Nf3 b6 3. e4 Bb7 4. Bd3 d6 5. O-O Nd7 6. Re1 g6 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} 7. c3 Bg7 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} Ngf6 {White is slightly better.} 9. Nf1 O-O 10. Ng3 e5 11. h3 {[#]} Qe7 $146 ({Predecessor:} 11... Re8 12. d5 c6 13. c4 c5 14. Be3 Nf8 15. Qd2 Bc8 16. a3 Bd7 17. b4 Qc7 {0-1 (35) Comas Fabrego,L (2470)-Garcia Ilundain,D (2550) Barcelona 1996}) 12. a4 a5 13. Bd2 Rfe8 14. Qc2 Rac8 15. Rad1 h6 16. Bb5 Red8 17. Bc1 Nf8 18. b3 c6 19. Bf1 Qc7 20. Be3 Re8 21. Nd2 exd4 22. cxd4 d5 23. e5 N6d7 {[#]} 24. f4 $1 c5 {[#]} 25. Nf3 cxd4 26. Qxc7 Rxc7 27. Nxd4 Rc3 28. Nb5 (28. Bf2 $16) 28... Rxb3 $14 29. Nd6 $1 $36 {[%cal Rd6e8][%mdl 2112] Double Attack. White is pushing.} Rb8 30. Nxb7 Rxb7 31. Rxd5 Rc7 32. Bb5 Nc5 33. f5 Re7 (33... gxf5 $142 34. Nxf5 Kh7) 34. Bf2 $16 Rxg3 (34... gxf5 $16 {was worth a try.} 35. Nxf5 Rc7) 35. Bxg3 $18 gxf5 36. Bh4 Rb7 37. Bf6 Nfe6 38. Bxg7 Kxg7 39. g3 Rc7 40. Rc1 ({Better is} 40. Rd6 $16) 40... Re7 (40... Nxa4 $1 $11 41. Rxc7 Nxc7) 41. Re1 (41. Kg2 $16) 41... f4 $2 (41... Rc7 $1 $11 {and Black has nothing to worry.}) 42. Kg2 Rc7 43. Rd6 Nb3 44. Rc6 ({Worse is} 44. Rxb6 Rc2+ 45. Kh1 fxg3 $11) 44... f3+ (44... Rb7 {might work better.} 45. Ba6 Rb8) 45. Kf2 Rd7 (45... Rb7 $142 46. Re4 Nbc5) 46. Rd6 Rc7 47. Kxf3 Rc3+ 48. Rd3 $2 (48. Re3 $18 Ng5+ 49. Ke2 Rc2+ 50. Kd3) 48... Nbd4+ $11 {The position is equal.} 49. Ke3 $1 ({Avoid the trap} 49. Ke4 $2 Nxb5 50. Ke3 Rxd3+ 51. Kxd3 Nc5+ 52. Kd2 Nc7 $19) 49... Nc2+ {[%mdl 64] Double Attack} 50. Kd2 Rxd3+ 51. Bxd3 Nxe1 52. Kxe1 {[%mdl 4096] Endgame KB-KN} Ng5 53. Ke2 Nxh3 54. Ke3 Kf8 55. Kd4 Ke7 56. Kd5 Nf2 57. Bf5 Nh1 (57... f6 {is more complex.} 58. exf6+ Kxf6 59. Bc2 h5 60. Kc6 Nh1) 58. g4 Ng3 59. Bd3 h5 60. gxh5 Nxh5 {Strongly threatening ...Nf4+.} 61. Kc6 Nf4 62. Bf5 Ng6 63. Kxb6 Nxe5 64. Kxa5 Kd6 65. Kb6 Nc4+ 66. Kb5 Ne3 67. Be4 Kc7 68. a5 Kb8 {[%mdl 32768] Blacks defense is rewarded with a draw.  Weighted Error Value: White=0.18/Black=0.21. Sensor Board Error (Ke4/e5)?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.4"]
[White "Beukes, Dante M"]
[Black "Kayonde, Andrew"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2206"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,12,12,12,15,17,24,20,34,20,38,22,29,0,0,0,35,-111,-124,-81,0,0,0,-207,-187,-222,-209,-223,-218,-235,-150,-241,-179,-171,-110,-129,-118,-184,-137,-189,0,-22,395,0,0,0,0,-52,-27,-28,19,0,287,310]} 1. e4 c6 2. Nf3 d5 3. d3 Qc7 4. Nc3 Nf6 5. e5 Nfd7 $1 6. d4 {B10: Caro-Kann: 2 d3 and 2 c4.} e6 {[#]} 7. Be3 $146 ({Predecessor:} 7. Ne2 c5 8. c3 Nc6 9. g3 h6 10. h4 Be7 11. Bg2 b6 12. O-O Bb7 13. h5 {1-0 (40) Jacobson,B (2487)-Espinosa Veloz,E (2485) Chess.com INT 2020}) 7... a6 8. Ne2 {White has an edge.} c5 9. c3 Nc6 10. Nf4 Qb6 11. Bd3 Qxb2 12. O-O c4 {[#]} ({But not} 12... Qxc3 13. Rc1 $17) 13. Bxc4 dxc4 $17 14. d5 Ndxe5 (14... Nd8 $1 $17 15. Bd4 h5) 15. dxc6 $11 Nxc6 16. Nh5 $2 (16. Nd2 $11) 16... Qxc3 $19 17. Bb6 Bd7 18. Rc1 Qd3 19. Nf4 Qe4 20. Nh5 (20. g3 $17) 20... Qg4 21. Ng3 Be7 (21... e5 $19 22. Nd2 c3) 22. h3 $17 Qf4 23. Nh5 (23. Qe2 $17 {was worth a try.}) 23... Qh6 $19 24. Ng3 (24. Nd2 $17 {was called for.}) 24... Nb4 $2 (24... e5 $19 {White must now prevent ...Qe6.} 25. Rxc4 Qe6) 25. Be3 $1 $11 {[%cal Re3h6]} Qf6 {[%mdl 8192] [#]} (25... g5 $1 $11 {and Black has nothing to worry.} 26. Qd4 f6 27. Qxc4 Nd5) 26. Bg5 $2 (26. Nh5 $1 $18) 26... Qb2 27. Bxe7 Kxe7 28. Rxc4 ({White should play} 28. Rb1 $11 Qc3 29. Ne2) 28... Nd5 {And now ...Rhc8 would win.} 29. Re1 {Strongly threatening Qxd5.} Bc6 30. Nd4 Rhc8 $2 {[%mdl 8192] [#]} (30... Kf8 $11) 31. Qh5 $1 {White used his chance.  Weighted Error Value: White=0.50/Black=0.60} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.5"]
[White "Zaibi, Amir"]
[Black "Silva, David"]
[Result "1/2-1/2"]
[ECO "E69"]
[WhiteElo "2381"]
[BlackElo "2258"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,61,64,55,52,70,58,81,88,87,84,100,88,96,83,118,12,8,8,14,15,13,-95,-95,-91,-102,-89,-63,-27,-38,-52,-53,-96,-97,-93,-96,-92,-63,-80,-77,-86,-78,-103,31,-95]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c6 7. O-O Qa5 8. h3 e5 9. e4 Re8 10. Be3 Nbd7 11. Rc1 {E69: King's Indian: Fianchetto: 6...Nbd7 7 0-0 e5 8 e4 c6 9 h3.} exd4 12. Nxd4 Nc5 {[%cal Rf6e4]} 13. Qc2 {[#] White is better.} Ne6 $146 ({Predecessor:} 13... Be6 14. b3 Rad8 15. Rfe1 Bc8 16. Rcd1 h6 17. Bc1 d5 18. cxd5 Nxd5 19. exd5 Rxe1+ 20. Rxe1 Bxd4 {0-1 (35) Menghi,C (2235)-Sturua,Z (2600) Elista 1998}) 14. Nde2 h5 15. Rfd1 Qc7 16. Qd2 Rd8 17. Nd5 cxd5 $11 18. cxd5 Nc5 19. e5 Nfe4 20. Qb4 {[#]} (20. Bxe4 $11 {keeps the balance.} Nxe4 21. Rxc7 Nxd2 22. Rxd2 (22. Bxd2 dxe5 23. Bg5 f6 $11) 22... Bxe5 23. Bg5) 20... Qb6 $1 $17 21. Qa3 (21. Qxb6 axb6) 21... Bxe5 22. b4 Nxg3 23. Nxg3 {[#]} Qa6 $1 24. Qxa6 Nxa6 25. b5 Nc5 26. Bxc5 dxc5 27. Rxc5 {With the idea d6.} Bd6 28. Rc4 f5 29. Ne2 Bd7 30. a4 Rdc8 {[#]} (30... Rac8 $17 31. Rdc1 Rxc4 32. Rxc4 Kf7) 31. Rdc1 {Weighted Error Value: White=0.28/Black=0.21} (31. Rc6 $1 $14 {was forced to keep a grip.} Be5 {[#]} 32. f4 $1 (32. Rxg6+ Kh7 $11) 32... bxc6 33. dxc6 Bxc6 34. Bxc6) 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.6"]
[White "Abdelazeez, Mohamed Abdalla"]
[Black "Wanyama, Harold"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2214"]
[BlackElo "2312"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,76,0,15,0,11,11,8,7,10,-7,8,-48,2,0,25,12,19,0,0,-10,17,0,47,42,74,65,52,62,79,-181,17,-294,-284,-342,-339,-638,-125,-520,-247,-441,-231,-246,-235,-490,-487,-1085,-1075,-1366,-1350,-1318,-1297,-29982,-29981,-2888,-1506,-1476,-1462,-29985,-29986,-3369,-733,-29993,-29992]} 1. Nf3 d5 2. c4 e6 3. e3 Nf6 4. Nc3 Be7 5. b3 O-O 6. Bb2 b6 7. Be2 Bb7 8. O-O Nbd7 9. Qc2 {A13: English Opening: 1...e6.} c5 10. Rac1 Rc8 11. Rfd1 {The position is equal.} Qc7 12. Qb1 Qb8 13. Qa1 {[#]} ({White should try} 13. cxd5 $11 Nxd5 14. Nxd5 Bxd5 15. Bd3) 13... Rfd8 $146 ({Predecessor:} 13... dxc4 14. bxc4 Rfd8 15. d3 Nf8 16. a4 Ng6 17. h3 Rd7 18. a5 Rcd8 19. axb6 axb6 {½-½ (63) Duong,T (2347)-Nguyen,D (2127) Ho Chi Minh City 2013}) 14. cxd5 exd5 15. d4 Bf8 16. dxc5 bxc5 17. h3 a6 18. Na4 Qd6 (18... Re8 $5 {[%cal Rd5d4]}) 19. Ne5 Qe6 20. Nxd7 Nxd7 21. Bf3 Bc6 22. Nc3 $2 {[%mdl 8192]} (22. Qb1 $16) 22... Ne5 $2 {[#] Black keeps a firm grip on the game.} (22... d4 $1 $19 {[%cal Rd4c3]} 23. Bg4 (23. Bxc6 $2 dxc3 24. Bd5 cxb2 $19) 23... f5) 23. Be2 $2 {[%mdl 8192]} (23. Bxd5 $1 $11 {and White has nothing to worry.} Bxd5 24. Nxd5 Rxd5 25. Rxd5 Nf3+ 26. gxf3 Qxd5 27. Kg2) 23... d4 $19 24. exd4 cxd4 25. Na4 $2 {[#]} (25. Qb1) 25... Qg6 $2 (25... Bxg2 $1 $19 {[%mdl 512] has better winning chances.} 26. Kxg2 Qg6+ 27. Kh2 Bd6 28. Bxd4 (28. Rxc8 $2 {gets mated.} Nd3+ {[%mdl 64] Discovered Attack} 29. f4 Bxf4+ 30. Kh1 Nf2#) 28... Nd3+ 29. Kh1 Qe4+ 30. Kg1 Nxc1 31. Rxc1 Bh2+ $1 {[%mdl 576] Decoy} 32. Kxh2 Qf4+ {[%mdl 64] Double Attack} 33. Kg2 Rxc1 34. Qxc1 Qxc1) 26. Bf1 $2 {[%mdl 8192]} (26. Rxc6 $17 {was the crucial defense.} Nxc6 27. Bxa6) 26... Nf3+ $40 {[%mdl 128] Black wants a kill.} 27. Kh1 {[#]} Nh4 (27... Qg5 $142 $1 {aiming for ...Be4.} 28. Rc4 (28. Rxc6 $2 Rxc6 29. Qb1 Qe5 $19) (28. Nb6 Qf4) 28... Be4 $1 29. Rxc8 Qf4) 28. Rxc6 Rxc6 ({Less strong is} 28... Qxc6 29. Bxd4 Rd6 30. Be5 $17) 29. Rd3 $2 (29. Rxd4 Rxd4 30. Bxd4) 29... Rc2 30. Rg3 (30. Bxd4 $142 Nf5 31. Bc5 Rxd3 32. Bxd3 Ng3+ {[%mdl 64] Discovered Attack} 33. fxg3 Qxd3 34. Bxf8 Qxg3 35. Qxg7+ Qxg7 36. Bxg7 Kxg7 37. h4) 30... Qf6 31. f3 Nf5 32. Rg4 h5 33. Bd3 hxg4 34. Bxc2 Ne3 {White must now prevent ...gxh3.} 35. Be4 gxh3 36. g4 Qh4 37. Qg1 {[#]} h2 (37... d3 $142 $1 38. Bxd3 (38. Nc3 d2) 38... Rxd3) 38. Qc1 Qf2 {[%csl Ge3][%cal Rf2g2] Weighted Error Value: White=1.59/Black=0.85} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.7"]
[White "Bouzidi, Ahmed"]
[Black "Calicoca, Wilton Inacio"]
[Result "1-0"]
[ECO "C69"]
[WhiteElo "2163"]
[BlackElo "2122"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,49,24,23,24,0,32,28,48,23,37,31,27,-53,-42,-64,-49,-63,-36,-50,-35,-41,0,-4,0,0,0,0,0,0,0,0,0,-8,7,0,1141,1135]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 Bg4 7. c3 Bd6 8. h3 {8.Nbd2 is setting a new trend.} Bh5 {C69: Ruy Lopez: Exchange Variation with 5 0-0 f6.} 9. Be3 Qe7 10. Nbd2 O-O-O {White has an edge.} 11. Re1 g5 12. dxe5 Bxe5 {[#]} 13. g4 $146 ({White should try} 13. Qe2 $11) ({Predecessor:} 13. Qa4 Bxf3 14. Nxf3 h5 15. h4 g4 16. Nd4 Nh6 17. Rad1 Nf7 18. Nf5 Qe6 19. Bc5 {½-½ (36) Rogos,J (2354)-Miciak,E (2389) ICCF email 2011}) 13... Bg6 $15 14. Nxe5 fxe5 15. Qf3 h6 16. Nf1 Rf8 17. Qg2 Nf6 18. Ng3 h5 19. Bxg5 hxg4 20. hxg4 Qg7 21. Bxf6 Rxf6 22. Re3 Rf4 23. f3 Qh6 {next ...Rxg4! is good for Black.} 24. Rae1 Rf5 $2 {[%mdl 8192] [#]} (24... Rf7 $11) 25. exf5 {Accuracy: White = 84%, Black = 77%.} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.8"]
[White "Oatlhotse, Providence"]
[Black "Gohil, Mehul"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2190"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,121,37,41,29,23,36,5,37,9,31,22,27,17,16,20,12,18,32,10,0,12,19,1,2,2,23,0,162,102,155,177,162,158,149,147,283,270,291,297,340,333,308,0,248,245,238,222,232,220,295,294,318,272,320,306,307,309,394,248,695,610,804,701,795,664,968,917,1008,863,832,566,754,733,861,864,1022,1170,1158,1162,1157,1105,981,964,12833,12833,12833,12834,3310,1570,5932,2819,7776,1339,988,0,29988,1482,29990,29991,29991,29984,12844,12844,29990,29991,29991,29992]} 1. g3 d5 2. Nf3 Nf6 3. Bg2 e6 4. O-O c5 5. c4 dxc4 6. Na3 Be7 7. Nxc4 Nc6 8. b3 O-O 9. Bb2 Qc7 {A13: English Opening: 1...e6.} 10. Nfe5 Bd7 11. e3 {[#]} Rad8 $146 {The position is equal.} ({Predecessor:} 11... b5 12. Nxd7 Nxd7 13. Na3 Qb6 14. d4 cxd4 15. Nc2 Rad8 16. Nxd4 Nxd4 17. Qxd4 Bf6 18. Qxb6 Nxb6 19. Bxf6 gxf6 {½-½ (92) Adhiban,B (2677)-Swapnil,S (2504) Pune 2016}) 12. Qe2 Be8 (12... b5 $5 {[%cal Rb5c4]} 13. Nxc6 (13. Nxd7 Qxd7 14. Na3 a6 $14) 13... Bxc6 14. Bxc6 Qxc6 $11) 13. Rac1 b5 14. Nxc6 Bxc6 15. Bxc6 Qxc6 16. Ne5 Qb7 17. d4 $36 {[%mdl 2048] White is pushing.} cxd4 18. Nc6 d3 19. Nxd8 Rxd8 20. Qd1 Qe4 21. Bd4 a6 $2 (21... e5 $11 {and Black has nothing to worry.} 22. Bxa7 d2) 22. f3 (22. Bb6 $1 $18 {[%cal Rb6d8]} Rb8 23. f3 $1) 22... Qd5 ({Black should try} 22... Qb7) 23. Bb6 $1 $16 {aiming for e4.} (23. Qxd3 e5 $17) 23... Rb8 {[#]} 24. e4 $1 {[%cal Re4d5]} Qd7 25. Be3 e5 (25... Bb4 $16) 26. Qd2 $18 h5 27. Rfd1 Rd8 28. Bb6 Rb8 29. Be3 Rd8 $1 30. b4 Qe6 31. a3 h4 32. Rc3 (32. gxh4 g6) 32... hxg3 33. hxg3 (33. Rxd3 Rxd3 34. Qxd3 Qh3 $17) 33... Nh5 34. Qh2 ({Not} 34. Rxd3 Rxd3 35. Qxd3 Nxg3 $16) 34... Qg6 35. Kf2 ({Much less strong is} 35. Rdxd3 Rxd3 36. Rxd3 f5 $18) 35... f5 {[#]} 36. exf5 ({Inferior is} 36. Rcxd3 Rxd3 37. Rxd3 fxe4 $11) 36... Qf7 37. Rcxd3 Rc8 (37... Rxd3 38. Rxd3 Qxf5) 38. g4 Nf6 39. Qxe5 Re8 40. Qg3 Qa2+ 41. R1d2 Qc4 42. Kg2 Nh7 43. Qf4 Qf7 44. Qd4 Kh8 45. Qd5 Qf8 46. Bc5 Nf6 47. Bxe7 Qxe7 48. Qd6 Qe1 49. Qh2+ Nh7 50. Rd8 Kg8 51. Rxe8+ Qxe8 {[%mdl 4096] Endgame KQR-KQN} 52. Qd6 Nf8 53. Qd5+ Kh8 54. Kg3 Qe1+ 55. Kg2 $2 ({Better is} 55. Kh3 $18 Qf1+ 56. Kh2) 55... Kh7 $2 {[%mdl 8192]} (55... Qe8 $11 56. Rd1 Qe2+ 57. Kg3 g6) 56. Qd3 (56. Rd1 $142 Qe2+ 57. Kg3 Qxd1 58. Qxd1 Kg8 59. Qd5+ Kh8 60. g5 g6 61. Qf7) 56... Kh6 57. Re2 Qh4 58. Qd2+ Kh7 59. Re1 {White wants to mate with Rh1.} Qf6 60. Rh1+ Kg8 61. Qd5+ {Weighted Error Value: White=0.36/Black=0.51} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.9"]
[White "Likoko, Elvis"]
[Black "Miguel, Sergio"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1646"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,109,0,17,0,4,-14,-12,-35,-21,-45,-14,-46,0,0,0,-8,-7,-8,0,-22,0,-10,-8,-114,-105,-90,-73,-150,-150,-174,-98,-101,-74,-95,-23,-105,-96,-126,-122,-140,-126,-135,-124,-117,-117,-133,-142,-121,-70,-62,-55,-241,-241,-241,-195,-195,-195,-243,-243,-351,-351,-351,-351,-351,-351,-350,-329,-322,-294,-391,-384,-513,-506,-490,-490,-468,-449,-703,-725,-827,-820,-820,-819,-804,-702,-1041,-976,-1294,-1234,-29977,-29978,-29991,-29992,-29992,-29993,-29993,-29992,-29992,-29990,-29999]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. c4 c6 5. O-O Nbd7 6. d3 e6 7. Bf4 {A11: English Opening: 1...c6.} Be7 8. Nc3 O-O {[#]} 9. Rb1 $146 {The position is equal.} ({Predecessor:} 9. h3 Bh5 10. cxd5 exd5 11. a3 a5 12. Rb1 Nc5 13. Nd4 Ne6 14. Nxe6 fxe6 15. b4 axb4 16. axb4 {0-1 (44) Muratovic,E (2389)-Tomas,A (2102) Bosnjaci 2019}) 9... a5 10. a3 Qb6 (10... d4 $5 11. Na4 Bxf3 12. Bxf3 b5 13. Bxc6 {[%mdl 64] Double Attack} bxa4 14. Bxa8 Qxa8 $15) 11. Qc2 Qa6 12. cxd5 cxd5 13. Qb3 Rfc8 14. Rfc1 a4 15. Qd1 Bxf3 16. Bxf3 Nc5 17. Qf1 (17. Na2 $11) 17... Nb3 $17 18. Rd1 {[#]} Bxa3 $1 {[%mdl 512]} 19. Nxd5 (19. Nxa4 $142 Bd6 20. Bxd6) (19. bxa3 Rxc3) 19... Nxd5 20. bxa3 Nxf4 (20... Nc3 $19 21. Qg2 Ra7) 21. gxf4 Rc7 22. Qg2 {[#]} Rac8 (22... Qd6 $1 $17 23. d4 Qxa3) 23. h4 (23. d4 $11 {remains equal.}) 23... b5 24. h5 Qd6 25. h6 {[%csl Gh6][%cal Rg2g7]} g6 26. Qg5 Rc5 27. Qf6 {[%csl Gh6][%cal Rf6g7]} Qd4 28. Qxd4 Nxd4 29. Kg2 Nb3 (29... Rb8 $17 30. Rb2 Rc3) 30. d4 $15 Rc1 31. d5 $2 {This costs White the game.} ({White should try} 31. Rdxc1 $15 Rxc1 32. Rb2 (32. Rxc1 $2 Nxc1 33. Be4 f5 $19)) 31... Rxd1 $19 32. Rxd1 {[%mdl 4096] Endgame [#] Threatening dxe6. KRB-KRN} b4 $1 {[%cal Rb4a3][%mdl 512]} 33. dxe6 (33. axb4 a3) 33... fxe6 34. Bg4 Re8 35. axb4 (35. Bf3 $142 bxa3 36. Bc6) 35... a3 36. Bxe6+ Rxe6 {KRN-KR} 37. Rd8+ Kf7 38. Ra8 Nd4 {...Nb5 is the strong threat.} 39. Rxa3 Nxe2 40. Ra7+ Re7 41. Ra6 Nxf4+ 42. Kf3 Nd5 43. b5 Rb7 44. Rd6 (44. Ra5 $142) 44... Rxb5 45. Rd7+ Ne7 46. Rd8 Rh5 47. Kg4 Rxh6 48. f4 Rh1 49. Rd7 h5+ 50. Kg5 Rg1+ {Black mates.} 51. Kh6 h4 52. f5 gxf5 53. Rd4 Ng8+ 54. Kh5 Nf6+ 55. Kh6 Rg6# {Accuracy: White = 53%, Black = 79%.} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.10"]
[White "Simpson, Michael M"]
[Black "Paiva, Donaldo"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1995"]
[BlackElo "2230"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,20,10,-8,-7,-25,1,-3,4,-1,8,0,27,15,28,-20,-18,-110,63,72,56,94,75,30,66,18,72,75,71,65,99,111,109,92,90,70,77,35,65,67,54,46,64,64,58,0,0,-68,-36,-98,-106,-101,-2,-104,0,-83,-25,-137,-125,-395,-379,-489,-322,-737,-556,-548,-547,-544,-521,-535,-527,-520,-351,-803,-758,-1697,-1535,-3025,-2615,-29990,-29991,-29994,-2390]} 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Bd7 6. Bc4 {B23: Closed Sicilian: Lines without g3.} Nc6 7. O-O Na5 8. Be2 {The position is equal.} Nf6 9. d3 O-O 10. Qe1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 11. Qh4 b4 {[#]} 12. Nb1 $146 ({Predecessor:} 12. Nd1 Rc8 13. Nf2 e6 14. f5 exf5 15. Bg5 Re8 16. Rae1 c4 17. exf5 Bxf5 18. dxc4 Bxc2 19. Nd4 Bf5 20. Nxf5 gxf5 21. Bd3 Rxe1 22. Rxe1 Rc5 23. b3 {½-½ (23) Srikanth,K (1967)-Saravanan,V (2423) Aurangabad 2011}) 12... e6 13. f5 (13. a3 $11) 13... Ne8 $2 ({Reject} 13... gxf5 $6 14. Bg5 $11) (13... exf5 $17 14. Bg5 fxe4 15. dxe4 h6 16. Bxh6 Nxe4 $1 {[%mdl 512]} 17. Qxd8 Raxd8 18. Bxg7 Kxg7) 14. Bg5 $14 f6 15. fxg6 hxg6 16. Bh6 e5 17. Nbd2 Be6 (17... Nc7 $1 $11) 18. Bxg7 Kxg7 19. Qg3 Rh8 20. Nh4 Rh6 21. Nf5+ Bxf5 22. exf5 g5 23. Nf3 Nc6 24. h4 {[%cal Rh4g5]} Nd4 25. Nxd4 cxd4 26. hxg5 fxg5 27. Bf3 (27. a3 $14) 27... Rc8 $11 28. Be4 (28. a3 $11) 28... Qf6 (28... Nf6 {is interesting.} 29. Qxg5+ Kh7 30. Bf3 Qe7 31. Rae1 Rg8) 29. Rac1 ({Better is} 29. a3 $1 $15) 29... Rc5 $17 30. Qf3 Nc7 (30... Qf7 $17 {White must now prevent ...Nf6.} 31. Qe2 Qh5 32. Qxh5 Rxh5) 31. Qg3 (31. Qe2 $1 $11 {keeps the balance.}) 31... Nb5 ({But not} 31... d5 $6 32. Bf3 $14) (31... Rh8 $17) 32. Bf3 {[#]} (32. Qf3 $11 {remains equal.}) 32... Rh4 (32... Rh8 $1 $17) 33. Bg4 (33. Qf2 $1 $11 {was the only way to keep the balance.}) 33... Nc7 {aiming for ...Nd5.} 34. Bh3 $2 {[%mdl 8192] White does not recover from this.} (34. Qf3 $17) 34... Nd5 $19 35. Rf2 Nf4 36. Bg4 $2 (36. Qf3 e4 37. dxe4) 36... Qh6 {[%csl Gh6][%cal Rh4h1]} 37. Bh3 Kf6 38. Rcf1 Nxh3+ 39. gxh3 Rxh3 40. Qg2 Qh5 41. b3 $2 (41. Re2) 41... g4 42. Re1 Qh4 {And now ...Rxc2! would win.} 43. Re4 Rg3 44. Kf1 Rxg2 45. Rxg2 Kxf5 {Weighted Error Value: White=0.94/Black=0.32} (45... Qh1+ $142 46. Rg1 Qf3+ {[%mdl 64] Double Attack} 47. Ke1 Rxc2 48. Rf1 Qg3+ 49. Kd1 Qxd3+ {[%mdl 64] Double Attack} 50. Ke1 Qd2#) 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.11"]
[White "Amdouni, Zoubaier"]
[Black "Njoroge Martin"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2229"]
[BlackElo "1965"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,118,33,0,34,34,35,25,20,22,33,31,109,100,110,127,112,92,208,189,227,217,224,200,227,218,210,218,216,196,323,343,1220,1231,1226,1217,1159,1120,982,478,493,485,483,497,489,482,476,466,462,462,521,497,789,789,787,782,770,741,731,727,716,708,1027,1002,1002,931,1004,994,1209,1277,1415,1346,4977,4818,29981,29977,29987,29988,29988,7100,29989,29978,29986,29987,29987,29988,29988,29989,29989,29987,29989,29990,29990,29991,29989,29990,29991,29992,29993,29993,29993,29994,29995,29996,29996,29997,29998,29999,29999]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. O-O Nf6 7. Kh1 b5 {B42: Sicilian: Kan Variation: 5 Bd3.} 8. a4 b4 9. a5 Bb7 {White has an edge.} 10. Qe2 {[#]} Bc5 $146 ({Predecessor:} 10... Nc6 11. Nxc6 Qxc6 12. f3 d6 13. Nd2 Be7 14. Nb3 O-O 15. Bd2 d5 16. e5 Nd7 {1-0 (29) Semenova,I (2207)-Postnikova,A (2067) Sukhumi 2006}) 11. Nb3 Bd6 (11... Be7 $14) 12. f4 {Black must now prevent e5.} e5 13. N1d2 {[%cal Bb1d2,Bd2c4,Bc4b6,Bb6d5][%mdl 32]} Nc6 14. Nc4 Be7 (14... O-O $16 {was worth a try.}) 15. Nb6 Rb8 16. Nd5 Nxd5 17. exd5 Nd4 18. Nxd4 (18. Qxe5 $6 Qxe5 19. fxe5 Nxb3 $16) 18... exd4 19. Re1 {[%csl Ge1][%cal Re2e7]} d6 20. Qe4 Bc8 (20... Kf8 {is a better defense.} 21. Qxd4 Bf6) 21. f5 $18 {Strongly threatening Bh6!} Kf8 $2 (21... f6 22. Bd2 Kf7) 22. f6 {[%mdl 64] [#] Deflection} gxf6 23. Bh6+ Ke8 24. Bg7 f5 25. Qxe7+ Qxe7 26. Rxe7+ ({Resist} 26. Bxh8 Be6 $18) 26... Kxe7 27. Re1+ ({Don't take} 27. Bxh8 f6 $18) 27... Be6 28. Bxh8 ({Less strong is} 28. dxe6 Rhe8 $18) 28... Rxh8 29. dxe6 fxe6 30. Bxa6 {[%mdl 4096] Endgame KRB-KR} e5 31. Bb7 b3 (31... Kd7 $142 32. Bd5 Kc7) 32. cxb3 Kd7 33. Rc1 d3 34. Kg1 d2 35. Rd1 Kc7 36. a6 Kb6 37. Rxd2 Rd8 38. Rd5 h6 39. Kf2 f4 40. Kf3 Rd7 41. Ke4 Rg7 42. Rxd6+ {[%mdl 64] [#] Double Attack} Kc7 43. Kxe5 Re7+ 44. Re6 Rd7 45. Kxf4 (45. Bc6 $142 Rd1 46. a7 Re1+ 47. Kf6 Ra1 48. Ba4 Rxa4 49. Re7+ Kd6 50. bxa4) 45... Rd2 46. Rxh6 {White mates.} Rxb2 47. Bd5 Rf2+ 48. Ke5 Re2+ 49. Be4 Ra2 50. a7 Rxa7 51. Rh7+ Kb6 52. Rxa7 Kxa7 53. h4 Kb6 54. h5 Ka7 55. h6 Kb6 56. h7 Ka7 57. h8=Q Kb6 58. Kd6 Ka7 59. Kc5 {[%csl Ge4][%cal Rh8a8]} Ka6 60. Qa8# {Weighted Error Value: White=0.22/Black=0.40} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.12"]
[White "Oliveira, Luciano"]
[Black "Hamzaoui, Khalil"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2115"]
[BlackElo "1883"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,80,42,42,53,42,94,42,41,42,52,46,37,32,45,37,45,30,33,34,29,29,27,-84,-90,-99,-97,-115,-101,-112,103,112,91,101,156,155,146,132,129,133,129,126,127,91,97,85,125,108,140,115,213,165,296,297,252,209,422,421,418,401,295,289,466,371,306,229,172,-29977,-29978,-29978,620,-6322,-898]} 1. d4 g6 2. e4 Bg7 3. Nc3 d5 4. exd5 Nf6 5. Bc4 Nbd7 6. Nf3 Nb6 {B06: Modern Defence.} 7. Bb3 a5 (7... O-O $14) 8. a4 (8. Na4 $1 $16) 8... O-O $14 {[%cal Rb6d5] White is slightly better.} 9. O-O Nbxd5 10. Nxd5 Nxd5 11. Re1 e6 12. Bg5 Qd6 13. Qd2 b6 {[#]} 14. c3 $146 ({Predecessor:} 14. Bh6 Bb7 15. Bxg7 Kxg7 16. Ne5 Rad8 17. Rad1 h6 18. c3 Ne7 19. Re3 Nf5 20. Rh3 {1-0 (67) Gunduz,U (2165)-Semiev,S (2290) Marmaris 2019}) 14... Bb7 15. Rad1 Rac8 16. Ne5 (16. Bh6 $11) 16... f6 $17 17. Nc4 Qc6 {Hoping for ...Nf4!} 18. Bh4 {[#]} Nxc3 $1 {[%csl Gb7][%cal Rc6g2][%mdl 576] Double Attack} 19. f3 {Nxa5 is the strong threat.} Nxd1 $2 {[#]} (19... Nd5 $1 $17 20. Ne3 Qd7 21. Nxd5 exd5) 20. Nxa5 $1 $16 bxa5 21. Rxe6 Qd5 22. Bxd5 Bxd5 23. Re1 Bb3 24. Rxd1 Bxd1 25. Qxd1 Rb8 26. Qc2 f5 27. Bf2 Kh8 28. h4 ({Not} 28. Qxc7 Rfc8 $11) 28... Rf7 29. b3 Rd7 (29... h5 $16) 30. Qc3 Rb4 (30... Rd5 $142 31. Qxc7 Rbd8) 31. Qc6 $18 {Qa8+ would kill now.} Rf7 32. Qd5 Rf8 (32... Kg8 33. Kh2 Bf8) 33. Qxa5 Rxb3 34. Qxc7 Ra3 35. d5 Rd3 $2 (35... Rxa4 {was called for.} 36. d6 Ra1+ 37. Kh2 Be5+ 38. f4 Bf6) 36. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Rxd5 {With the idea ...Be5.} 37. a6 Be5 38. Qe7 $4 {[%mdl 8192]} (38. Qc2 $18) 38... Rd1+ 39. Be1 Rxe1+ 40. Kf2 {[%cal Re7f8] [#]} Bg3+ $1 {[%mdl 576] Discovered Attack. Quite a comeback for Black.  Weighted Error Value: White=0.42/Black=0.32} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.13"]
[White "Simoes, Joao"]
[Black "Bongo Akanga Ndjila, Barthelemy"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2228"]
[BlackElo "1803"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,117,55,73,70,95,100,107,76,116,112,107,104,110,106,112,107,120,66,93,98,172,144,193,184,181,154,384,401,495,481,625,609,730,545,862,860,860,859,820,748,1175,1206,1150,1095,1944,1829,1829,1491,29991,29992,29995,29996,29996,29994,29994,558,563,562,650,649,640,495,483,420,612,562,702,682,777,775,743,658,862,922,897,845,866,726,737,734,709,589,718,540,546,404,641,637,619,589,763,756,960,948,1143,1095,1675,1136,29952,6694,6079,6027,29981,29977,29989,29990,29990,29991,29991,29992]} 1. d4 Nf6 2. c4 b6 3. f3 Bb7 4. e4 d6 5. Nc3 c5 6. d5 {A50: Queen's Fianchetto Defence (1 d4 Nf6 2 c4 b6).} Nbd7 7. Nh3 g6 8. Bg5 {White is better.} Bg7 9. Qd2 h6 10. Be3 {[#]} g5 $146 ({Predecessor:} 10... a6 11. Nf2 b5 12. cxb5 Qa5 13. a4 h5 14. Ra3 O-O 15. Bh6 Rfc8 16. Bxg7 Kxg7 {1-0 (38) Horvath,J (2531)-De Santis,A (2324) Civitanova Marche 2012}) 11. Be2 Ne5 12. Nf2 Qd7 13. a3 ({White should play} 13. h4 $16) 13... Ng6 14. g3 O-O-O (14... Ba6 $16) 15. b4 $18 Kb8 16. O-O Nh5 17. Rab1 Nf6 $2 {This costs Black the game.} (17... Rhg8 $16) 18. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} e6 19. a5 exd5 20. cxd5 Rhe8 21. Bb5 Qc7 22. axb6 axb6 23. Bxe8 Ne5 {[#]} 24. Nd3 $1 Nc4 (24... Nxe8 25. Nxe5) 25. Qa2 Nxe3 {[#]} 26. Nb5 $1 Qe7 (26... Nxe8 27. Qa7+) 27. Qa7+ Kc8 28. Bc6 Nxf1 29. Ra1 Bxc6 30. Qxe7 {[%csl Gb5][%cal Re7c7]} Rd7 31. Nxd6+ Kb8 {[#]} 32. Qxd7 Bxd7 33. Rxf1 Kc7 34. bxc5 bxc5 35. Nc4 Bb5 36. Rc1 Bf8 (36... Nd7 $142 37. Kf2 Bd4+ 38. Ke2 h5) 37. Kf2 g4 38. Nde5 gxf3 39. Kxf3 Be8 40. g4 Nh7 41. h4 Be7 42. Kg3 f6 43. Nd3 Bb5 44. Ndb2 Nf8 45. Rd1 Bd8 46. d6+ Kd7 47. Kf4 Ne6+ (47... Ng6+ $142 48. Kg3 Nh8) 48. Kf5 Nd4+ 49. Kg6 Ke6 50. Kxh6 Nf3 51. h5 Ng5 52. Kg7 Bc6 53. Re1 Nxe4 54. h6 f5 55. gxf5+ Kxf5 56. Rf1+ {White mates.} Ke6 57. h7 Bf6+ {[#]} 58. Rxf6+ $1 {[%mdl 64] Promotion} Nxf6 59. h8=Q {Weighted Error Value: White=0.41/Black=0.71} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.14"]
[White "Vermaak, Ashley Christopher"]
[Black "Mosutha, Thuso"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1751"]
[BlackElo "2036"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,130,10,14,12,9,5,25,16,34,-10,35,16,87,-2,5,-30,34,53,65,16,193,172,214,84,58,67,246,15,128,-40,51,42,46,56,82,53,58,45,37,62,106,0,82,0,7,0,0,-420,-410,-394,-390,-562,-561,-502,-481,-480,-468,-464,-463,-550,-543,-530,-532,-531,-522,-703,-703,-693,-693,-692,-692,-692,-680,-652,-634,-619,-619,-612,-522,-2287,-658,-12835,-12835,-12837,-12837,-12836,-12835,-12839,-12839,-12839,-12840,-12841,-12841,-12847,-12840,-12841,-12841,-12841,-12842,-12841,-12842,-12843,-12843,-12843,-12843,-12845,-12846,-12846,-12847,-12847,-12847,-12848,-12847,-12847,-12847,-12848,-12849,-12849,-12850]} 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. Nf3 Nbd7 6. Be2 dxc4 7. a4 {is more profitable than 7.Bxc4 at the moment.} Bb4 8. Bxc4 {D45: Semi-Slav: 5 e3.} O-O 9. O-O Qe7 10. Qc2 {White has an edge.} e5 11. b3 h6 12. Bb2 {[#] Black should prevent dxe5.} e4 $146 (12... exd4 $1 $11 13. Nxd4 Ne5) ({Predecessor:} 12... exd4 13. exd4 Nb6 14. a5 Nxc4 15. bxc4 a6 16. Qb3 Bd6 17. Ba3 Bxa3 18. Qxa3 Qc7 {1-0 (28) Wesseln,K (2345)-Meyer,M Bremen 1999}) 13. Nd2 (13. Ne5 $16) 13... Re8 $11 14. Rae1 Bd6 (14... Nb6 $11) 15. f3 $14 exf3 16. Nxf3 (16. gxf3 Nb6 $11) 16... c5 $2 (16... Nb6 $11) 17. Nb5 $18 Bb8 18. Ba3 (18. dxc5 $1 $18 {has better winning chances. And now Nd6! would win.} Qe4 19. Qd2) 18... a6 $16 19. Nc3 {Strongly threatening e4.} Bd6 $2 ({Better is} 19... b5 $14 20. axb5 Bb7) 20. a5 $2 (20. e4 $1 $18 {[%cal Re4e5]} b5 21. axb5 cxd4 22. e5 $1 {[%mdl 64] Double Attack} Bxa3 23. exf6 {[%mdl 64] Pin}) 20... Qf8 (20... b5 $1 $11 {keeps the balance.} 21. axb6 Nxb6) 21. d5 $2 (21. Nh4 $1 $16 {[%cal Rh4g6] Hoping for Ng6.} b5 22. axb6 (22. Ng6 Bxh2+ 23. Kxh2 Qd6+ {[%mdl 64] Double Attack} 24. Nf4 bxc4 $17) 22... Nxb6 23. Rxf6 $1 (23. Ng6 Nxc4 24. Nxf8 Nxa3 $16) 23... Nxc4 24. bxc4 (24. Rxd6 $2 Nxa3 25. Qc1 Qxd6 $19) 24... gxf6 25. Nd5) 21... b5 (21... Qe7 $15) 22. axb6 $1 $14 Nxb6 23. e4 {Black must now prevent e5.} Nfd7 24. Bb2 Ne5 25. Na4 Nxa4 26. bxa4 Ra7 {[%cal Ba8a7,Ba7b7,Bb7b2][%mdl 32]} 27. a5 ({White should play} 27. Nxe5 $16 Bxe5 28. Bxe5 Rxe5 29. Rb1) 27... Qe7 (27... Nxc4 $11 {remains equal.} 28. Qxc4 Bd7) 28. Qc3 (28. Nxe5 $16 Bxe5 29. Qf2) 28... Qc7 $11 29. Kh1 Rb7 {...Rxb2! is the strong threat.} 30. Bxa6 $2 {[%mdl 8192] [#]} (30. Ba1 $11) 30... Rxb2 $1 $19 {[%mdl 576] Discovered Attack} 31. Bxc8 {[#]} Nxf3 $1 {[%mdl 64] Discovered Attack} 32. Rxf3 (32. Qxb2 $142 Nxe1 33. Bf5) 32... Be5 {Black is clearly winning.} 33. d6 Bxc3 34. dxc7 Bxe1 35. Bd7 Bxa5 36. g3 Rf8 ({Weaker is} 36... Rb1+ 37. Kg2 $17) 37. c8=Q Rxc8 38. Bxc8 {[%mdl 4096] Endgame KRB-KRB} c4 39. Ra3 {[#]} c3 $1 40. Rxa5 {KRB-KR} (40. Ra4 c2) 40... c2 {[%cal Rc2c1]} 41. Rc5 Rb1+ 42. Kg2 c1=Q 43. Rxc1 Rxc1 {KR-KB} 44. Bb7 Rc3 45. Bd5 Kf8 46. h4 Ke7 (46... h5 $142 47. Kf2 Ke7) 47. Kh3 h5 48. Bb7 g6 49. Bd5 Kf6 50. Kg2 Rc7 51. Kf3 Ke5 52. Ke3 f5 53. Kd3 Rd7 54. Ke3 Ra7 55. Bc6 Ra3+ 56. Kf2 fxe4 57. Be8 Rf3+ 58. Kg2 Rf6 59. g4 hxg4 60. Kg3 e3 {( -> ...e2)} 61. Bb5 Rf2 62. Bd3 Kf6 63. Bb5 Kg7 64. Bd7 Rf3+ 65. Kg2 e2 {Quite a comeback for Black.  Weighted Error Value: White=0.75/Black=0.41} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.15"]
[White "Joelson, Ricardo"]
[Black "Meftahi, Houssem"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2017"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,105,20,0,50,45,33,-8,10,10,12,13,-6,-31,43,40,51,17,27,24,33,30,43,0,27,20,129,-45,-47,-50,80,-46,147,108,106,71,63,-14,-27,-284,-282,-399,-388,-652,-564,-550,-537,-588,-577,-612,-168,-159,-89,-86,346,374,276,0,462,476,474,442,760,605,587,589,585,581,739,730,6254,6254,6222,6222,6222,6222,6222,6222,6222,6222,6222,6024,6283,979,5195,5169,5169,5126,6283,6220,5700,5069,4132,2329]} 1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. c4 dxc4 7. Qc2 a6 8. Qxc4 Bd7 {E05: Open Catalan: 5 Nf3 Be7.} (8... b5 $5 {[%cal Rb5c4]} 9. Qc2 Bb7 $11) 9. Nc3 Bc6 10. Re1 b5 $1 {[%cal Rb5c4] The position is equal.} 11. Qb3 {[#]} Nbd7 $146 ({Predecessor:} 11... b4 12. Na4 Nbd7 13. Bg5 Bd5 14. Qc2 Be4 15. Qc4 Nb6 16. Nxb6 cxb6 17. Rac1 b5 {0-1 (40) Ling,B (2088)-Cagasik,P Moravia 2003}) 12. e4 b4 13. e5 Nd5 ({Black should play} 13... bxc3 $15 14. exf6 Nxf6) 14. Ne4 $14 Bb7 15. Qc2 h6 16. Nc5 Nxc5 17. dxc5 a5 18. Re4 a4 19. Rg4 h5 {[#]} (19... Kh8 $11) 20. Rd4 $2 (20. Ng5 $1 $16 {[%mdl 512]} Bxg5 21. Rxg5) 20... Ra5 $15 21. c6 Ba6 (21... Rc5 $15 22. Rc4 Rxc4 23. Qxc4 Nb6) 22. Bd2 (22. h4 $1 $16) 22... b3 $2 (22... a3 $1 $15 {stays ahead.}) 23. Qe4 (23. axb3 axb3 24. Qd1 Rxa1 $11) 23... Rc5 24. Rxa4 Bb5 25. Rd4 (25. Ra7 $14) 25... bxa2 $11 26. Bb4 $2 {[%mdl 8192] [#]} (26. b4 $11 Rxc6 27. Rxa2) 26... Nxb4 $1 $19 {[%mdl 512]} 27. Rxd8 (27. Rxb4 $142 Bxc6 28. Qe2) 27... Rxd8 28. Ne1 $2 (28. Bf1 Rcd5 29. Be2) 28... Rc4 29. Qf3 Rd2 30. Bf1 Bxc6 31. Qb3 {[#]} Re4 $2 (31... Bc5 $1 {[%csl Gd2][%cal Rc5f2][%mdl 512]} 32. Bxc4 Rxf2 33. Qxb4 (33. Nd3 Nxd3 34. Bd5 Bxd5 35. Qxd5 exd5 36. b4 Bd4 {[%mdl 64] Double Attack} 37. Rf1 Rd2+ 38. Kh1 Nf2+ 39. Kg1 Ng4+ {[%mdl 64] Double Attack, Discovered Attack} 40. Rf2 Rxf2 41. h4 a1=Q#) 33... Rg2+ {[%mdl 64] Zwischenzug} 34. Kf1 Rg1+ 35. Ke2 Bxb4 36. Bxa2 Bb5+ 37. Kf3 Rf1+ 38. Ke4 Bc6+ 39. Kd3 Rxe1 40. Rxe1 Bxe1) 32. Nf3 {[#]} Bd5 (32... Rxf2 $142 $1 {[%mdl 512]} 33. Kxf2 Bc5+ 34. Kg2 Re3 {[%mdl 64] Double Attack}) 33. Qa4 $17 {[#]} Rxb2 $2 {[%mdl 8192]} (33... Nc6 $1 $17 {and life is bright.} 34. Qxe4 Rd1 35. Qxd5 {[%mdl 64] Remove Defender} Rxd5 36. Rxa2 Nxe5 37. Ra8+ Kh7 38. Nxe5 Rxe5) 34. Qe8+ $18 {[%mdl 64] Double Attack} Kh7 35. Qxf7 $2 (35. Qxe7 $18 {aiming for Ng5+.} Rb1 {[#]} 36. Rxa2 $1 {[%mdl 512]} (36. Qxf7 Rxa1 37. Qxh5+ Kg8 $11) 36... Nxa2 37. Ng5+ Kh6 38. Nxe4 (38. Nxf7+ Kg6 $11) 38... Bxe4 39. Qxf7) 35... Rg4 $2 {[%mdl 8192]} (35... Nc6 $1 $11 {and Black stays safe.}) 36. Qxh5+ {White is clearly winning.} Kg8 37. Qxg4 {And now Qg6 would win.} Nc2 (37... Rb1 $142 38. Rxa2 Nxa2) 38. Rxa2 Rxa2 39. h4 Ra1 40. Qg6 Ne1 41. Qe8+ {[%mdl 64] Double Attack} ({And not} 41. Nd4 c5 $15) 41... Bf8 42. Ng5 {White threatens Qf7+ and mate.} Nf3+ 43. Nxf3 {[%mdl 64] Overworked Piece} Bxf3 44. Qxe6+ Kh8 45. Qf5 Be2 46. Qxf8+ Kh7 47. Qf5+ Kh8 48. Qh3 Re1 49. Qc8+ Kh7 50. Qf5+ Kh8 51. e6 {White wants to mate with e7.} Bxf1 52. Kh2 Bc4 {[#]} 53. e7 $1 {Accuracy: White = 42%, Black = 47%.} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.16"]
[White "Cambando, Jose"]
[Black "Singe, Philip Mbawala"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2128"]
[BlackElo "1857"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,151,2,-18,-7,-18,25,27,31,10,80,56,81,93,120,83,145,86,136,119,164,124,142,117,185,170,200,195,235,228,220,0,0,-184,0,-95,82,71,382,333,332,135,133,-11,-12,-40,0,-70,-21,-142,37,40,39,54,198,66,59,70,185,0,266,276,322,237,259,251,225,221,270,275,249,77,80,60,95,46,74,79,129,124,128,128,103,137,183,72,120,84,69,0,543,527,449,0,0,0,75,91,180,40,40,0,0,0,0,0,0,0,1623,1506,1141,0,0,0,0,0,0,0,0,0,20,0,20,0,0,-79,0,0,0,0,20,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. O-O Bg7 5. d3 O-O 6. Nbd2 Nbd7 7. c4 c6 8. Rb1 Re8 {A07: Réti Opening: New York and Capablanca Systems.} 9. b4 dxc4 10. Nxc4 Nb6 {White has an edge.} 11. Na5 {[#]} Nbd5 $146 (11... Nfd5 $11) ({Predecessor:} 11... Nfd5 12. Bb2 Nc3 13. Bxc3 Bxc3 14. Qb3 Bf6 15. d4 Rb8 16. Rfd1 Be6 17. Qc2 Qc8 {½-½ (69) Zivkovic,Z-Gajic,G Serbia 2007}) 12. Bd2 a6 13. Qc2 e6 14. Rfc1 Bf8 (14... e5 $142) 15. a3 (15. d4 $142) 15... Nd7 16. d4 Nc7 17. a4 $1 Nd5 18. Qb3 N7f6 (18... N5f6 $16) 19. Ne5 $18 Qb6 20. e3 h5 21. h3 Nd7 22. Naxc6 $2 (22. e4 $18) 22... bxc6 $11 23. Rxc6 $2 (23. Nxc6 $11 {and White is okay.} Bg7 24. b5 axb5 25. e4) 23... Qa7 $2 (23... Qb7 $19 {And now ...Nxe5 would win.} 24. Rbc1 Nxe5 25. dxe5 Bxb4 26. Bxd5 Bxd2 27. Rxe6 Bxe6 28. Qxb7 Bxd5 {[%mdl 64] Discovered Attack} 29. Qxd5 Bxc1) 24. Nxg6 fxg6 $2 (24... Bb7 $17 25. Bxd5 exd5) 25. Bxd5 Nc5 {[%mdl 8192]} 26. dxc5 exd5 27. Qxd5+ (27. Rxg6+ $18 Kh7 28. Rf6) 27... Kh7 28. Rf6 (28. Rb6 $1 $16) 28... Bg7 29. Rd6 Bxh3 30. e4 (30. Rc1 $11) 30... Qe7 $1 $15 31. f3 (31. Bg5 $1 $11 {keeps the balance.} Qxe4 32. Qxe4 Rxe4 33. b5) 31... Qe5 $2 (31... Be5 $17 32. Rc1 Rad8) 32. Bf4 $36 {[%mdl 2048] White is more active.} Qxd5 33. Rxd5 Re7 (33... Be6 $14) 34. Kh2 ({Better is} 34. c6 $18) 34... Be6 35. Rd6 Bh6 (35... Ree8 $14) 36. Rb2 $2 (36. Bxh6 $18 Kxh6 37. c6) 36... Bxf4 {[%mdl 8192]} (36... Bg7 $11 {and Black has nothing to worry.} 37. Rb1 Bf6) 37. gxf4 $18 Bc4 38. Rd4 Bf7 39. b5 Be8 40. c6 axb5 41. axb5 Rb8 {Threatening ...Bxc6.} 42. Rbb4 $2 (42. Rc2 $1 $18 {is the precise move to win.} Rc7 43. Rc5) 42... Rc7 $16 43. Kg3 {[%mdl 1024] White has strong compensation.} Kg7 $1 44. e5 Kf7 45. Kh4 Ke6 46. Kg5 $1 Ke7 47. f5 gxf5 48. Kxf5 Rb6 49. Kg5 (49. f4 $18) 49... Ke6 50. f4 {Black must now prevent f5+.} Rg7+ 51. Kh6 (51. Kh4 $1 $14 Rc7 52. Rb1 (52. Rd6+ Ke7 $16)) 51... Rc7 $2 {[%mdl 8192]} (51... Rg6+ $1 $11 {and Black stays safe.} 52. Kh7 Kf5) 52. Rd6+ $18 Ke7 {[%cal Rc7c6]} 53. Rdd4 $2 (53. f5 $1 $18 {[%cal Rf5f6]} Kf7 54. Rf6+ (54. Kxh5 Rcxc6 55. bxc6 Rxb4 $14) 54... Kg8 55. Rb1 Rh7+ 56. Kg5 Rg7+ 57. Kf4) 53... Ke6 $11 54. Kg5 (54. Rb1 $11) 54... Rg7+ $16 55. Kh4 $1 {Threatens to win with Rd6+.} Rc7 56. Rd6+ ({White should play} 56. Rb2 $1 $18) 56... Ke7 $14 {[%cal Rc7c6]} 57. f5 {Hoping for Rdd4.} Rcxc6 $1 58. f6+ Kf7 59. bxc6 Rxb4+ $11 {[%mdl 4096] Endgame KRB-KR} 60. Kg5 Rg4+ $2 {[%mdl 8192]} (60... Rb5 $11 61. Kf5 Rc5) 61. Kf5 $18 Rc4 {[#]} 62. e6+ $2 (62. Rd7+ $1 $18 {[%mdl 512]} Kf8 63. Rh7) 62... Kf8 $11 63. Rd8 Rc5+ 64. Ke4 {Intending f7 and mate.} Rxc6 65. Kd5 Rc1 66. Ke5 {White wants to mate with f7.} (66. Rb8 {feels hotter.} Rd1+ 67. Ke5 Re1+ 68. Kf5 Rf1+ 69. Ke5) 66... Rc7 (66... Re1+ {seems wilder.} 67. Kf5 Rf1+ 68. Kg5 Rg1+ 69. Kf5 Rf1+) 67. Kf5 Ra7 68. Kg5 Ra5+ 69. Kh6 {[#]} (69. Kf4 $11 {remains equal.} Ra4+ 70. Kf5 Ra5+ 71. Kf4 Ra4+ 72. Kg5 Ra5+ 73. Kf4) 69... Ra7 ({Black should try} 69... Ra6 $1 $17 {[%cal Ra6e6]} 70. e7+ Kf7 71. Kxh5 Rxf6) 70. Kg5 {The position is equal.} Ra5+ 71. Kf4 {f7 would kill now.} Ra7 (71... Ra4+ {is more complex.} 72. Kg5 Ra5+) 72. Rb8 Ra4+ 73. Kg5 Ra5+ 74. Kf4 {White threatens f7 and mate.} Ra4+ 75. Kg3 {Threatening mate with f7.} Ra7 (75... Re4 $5 76. f7 $8 {[%mdl 64] Pin} Rxe6 77. fxe8=N (77. fxe8=Q+ Rxe8 78. Rxe8+ Kxe8 $11) 77... Rxe8 78. Rxe8+ Kxe8 $11) 76. Kh4 {[%mdl 32768] Weighted Error Value: White=0.58/Black=0.59. Sensor Board Error (Ke4/e5)?} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.17"]
[White "Alberto, Manuel"]
[Black "Libe, Sofonea"]
[Result "1-0"]
[ECO "B53"]
[WhiteElo "2167"]
[BlackElo "1509"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,39,98,101,201,201,201,201,201,206,208,206,208,209,211,191,206,204,235,235,235,212,210,214,263,207,209,185,293,264,314,233,172,180,181,166,159,150,876,862,6395,5483,29994,29990,29991,29992,29992,29993,29993,29985,29985,29986,29986,29979,29986,29979,29988,29989,29989,29990,29990,29991]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 e5 8. Qd3 Nf6 9. Bg5 Be7 10. O-O-O Qc7 ({Better is} 10... Ng4 $14 11. Qd2 f6) 11. Bxf6 $16 {B53: Sicilian: 2...d6: Lines with Qxd4.} gxf6 (11... Bxf6 $16 12. Qxd6 Qxd6 13. Rxd6 Be7) 12. Nh4 $18 O-O-O 13. Nf5 {White is clearly better.} Bf8 14. Nd5 Bxd5 15. Qxd5 h5 16. Rd3 {[#] Threatens to win with Rc3.} Kb8 17. Rc3 Qd7 18. Rd1 {[#]} Bh6+ $146 ({Predecessor:} 18... Qe6 19. Qa5 Be7 20. Qc7+ Ka8 21. Nxe7 a6 22. Nd5 Rc8 23. Nb6+ {1-0 (23) Millan Hernandez,M (1797)-Franzoni Ladron,E (1780) Barcelona 2016}) 19. Kb1 Bf8 20. Rb3 Rg8 21. g3 b6 22. Rdd3 Qb7 23. Qc4 Rg4 (23... d5 {is a better defense.} 24. Rxd5 Rxd5 25. exd5 (25. Qxd5 Qxd5 26. exd5 Bc5 $16) 25... Qd7) 24. f3 Rg5 25. a4 d5 26. Qb5 Bc5 {White should prevent ...a6.} 27. Rd1 d4 28. a5 Qd7 $2 (28... Rgg8 $16 29. axb6 axb6) 29. Qxc5 Ka8 30. axb6 Rb8 31. Rdd3 {White mates.} Rgg8 32. bxa7 Rxb3 33. Rxb3 Rc8 {[#]} 34. Qxc8+ $3 {[%mdl 64] Remove Defender, Promotion} Qxc8 35. Rb8+ Qxb8 36. axb8=Q+ Kxb8 {KN-KP} 37. Ng7 h4 38. gxh4 Kc7 39. h5 Kd7 40. h6 {Black did not feel at home in the position after the opening.  Weighted Error Value: White=0.11/Black=0.31} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.18"]
[White "Mwashe, Philip"]
[Black "Hemam, Moulaye Brahim"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1756"]
[BlackElo "2046"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,54,42,68,-44,-17,-14,-15,-25,-10,-29,0,-17,0,-27,6,0,24,0,10,-47,-30,-100,-16,-18,-25,-96,-74,-173,-71,-83,-80,-78,-80,-99,-103,-133,-125,-130,-133,-497,-491,-617,-617,-960,-940,-1056,-1067]} 1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 d5 5. dxe5 dxe4 6. exf6 {B07: Pirc Defence: Miscellaneous Systems.} (6. Bb5+ $14 c6 7. Qxd8+ Kxd8 8. exf6 cxb5 9. Nd2) 6... exd3 7. fxg7 Bxg7 {[#]} 8. Nf3 $146 {The position is equal.} ({Predecessor:} 8. Be3 Nc6 9. Nf3 Bg4 10. Nbd2 Qd5 11. Qa4 Bd7 12. Qe4+ Qxe4 13. Nxe4 O-O-O 14. Kd2 {0-1 (25) Algaba,P (1892)-Bruneau,F (2032) Avoine 2010}) 8... Be6 9. O-O O-O 10. h3 Re8 11. Bg5 Qd6 12. Nbd2 Nd7 13. Re1 c5 14. Bh4 (14. Ne4 $11 Qd5 15. c4) 14... Qb6 15. Ng5 {[#]} (15. Re3 $11 {keeps the balance.}) 15... Bf5 ({Black should play} 15... Bd5 $1 $17 16. c4 Rxe1+ 17. Qxe1 Bc6) 16. Qb3 $11 ({Not} 16. Qh5 $2 Bg6 $19) 16... Bg6 17. Qxb6 (17. f4 $11) 17... Nxb6 (17... axb6 {feels hotter.} 18. a3 f6 19. Nge4 Bh6 20. g4 b5) 18. Nge4 (18. g4 $17) 18... Na4 (18... Bxe4 $19 19. Rxe4 f5) 19. Nf6+ $17 Bxf6 20. Bxf6 Re2 21. Rxe2 dxe2 22. b3 {[#]} Re8 $1 23. Nf3 Nb2 {And now ...Be4 would win.} 24. Ne1 $2 {[%mdl 8192] This move loses the game for White.} (24. c4 $17 {is a better chance.} Nd1 25. Ne1) 24... Re6 $19 {Black is clearly winning.} 25. Bg5 {[#]} Rd6 $1 {[%cal Rd6d1] ...Rd1 is the strong threat.} 26. Rc1 Rd1 27. f3 Nd3 {Weighted Error Value: White=0.79/Black=0.19} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.19"]
[White "Khalema, Sechaba"]
[Black "Sang, Ricky"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "1827"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,90,0,0,32,0,56,52,30,33,41,47,47,-12,-14,-9,-11,-18,39,39,47,43,43,43,43,18,44,47,62,0,103,100,138,28,37,28,18,16,17,2,3,0,0,0,0,0,0,0,0,0,12,20,112,95,93,93,102,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O Be7 7. Qe2 O-O 8. Nc3 a6 9. a4 Nc6 10. Rd1 Qc7 11. Bd2 b6 {is the legacy move (11...Rd8). D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 12. Be1 (12. d5 $5 {[%cal Rd5c6]} Na5 13. Ba2 $11) 12... Rd8 (12... Nb4 $11) 13. d5 $1 $14 {[%cal Rd5c6]} exd5 {White is slightly better.} 14. Nxd5 Nxd5 15. Bxd5 Bb7 {[#]} 16. Qc4 $146 (16. Bc3 $14) ({Predecessor:} 16. Bc3 h6 17. Qc4 Bf8 18. Qg4 b5 19. e4 Qe7 20. Qg3 Rab8 21. Bd2 Nd4 22. Nxd4 cxd4 23. Bf4 Rbc8 24. Rxd4 Bxd5 25. exd5 Rc4 26. Qd3 Qb4 {½-½ (26) Stempin,P (2400)-Adamski,J (2460) Naleczow 1984}) 16... Bf6 $11 17. Bc3 Bxc3 18. Qxc3 {[#]} Nb4 (18... Nd4 $1 $11 19. Bxf7+ Qxf7 20. exd4 Bxf3 21. gxf3 Rd5) 19. Bxb7 $14 Qxb7 20. a5 Rac8 21. axb6 Qxb6 22. Qc4 h6 23. h3 Qb5 24. Qh4 (24. Ne5 $14 Qxc4 25. Nxc4) 24... Rd3 (24... Rxd1+ $11 25. Rxd1 Nd3) 25. Ne5 $16 Rd5 26. Qf4 (26. Rxd5 $16 Nxd5 27. Nxf7 $1) 26... Qb7 27. Nc4 Rcd8 28. Rxd5 Qxd5 29. Qh4 Re8 {Threatens to win with ...Re4.} 30. Nb6 Qb3 31. Qc4 Qxb2 32. Rf1 Nd3 33. Qxa6 Ne5 34. Qa4 Re6 (34... Rd8 {is more complex.} 35. Nd5 Qb7 36. e4 Rb8 37. Qa3 Qb5) 35. Nd5 Qd2 (35... Kh7 $11) 36. Rd1 Qb2 {[#]} 37. Nf4 $1 Rf6 38. Qe8+ (38. Rd5 $16 {Black must now prevent Qe8+.} Ng6 39. Qe4 (39. Rxc5 Nxf4 40. exf4 Re6 $16)) 38... Kh7 $11 {The position is equal.} 39. Rd8 {[%csl Gd8][%cal Re8h8]} Rxf4 $1 40. exf4 {[%mdl 4096] Endgame KQR-KQN} (40. Qh8+ {keeps more tension.} Kg6 41. exf4 Qc1+ 42. Kh2 Qxf4+ 43. Kg1) 40... Qc1+ {[%mdl 64] Double Attack} 41. Kh2 Qxf4+ {[%mdl 64] Double Attack} 42. Kh1 Qc1+ 43. Kh2 Qf4+ {[%mdl 64] Double Attack} 44. Kg1 Qc1+ 45. Kh2 Qf4+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.19/Black=0.25} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.20"]
[White "Maazouzi, Youssef"]
[Black "Kamara, Ansumana"]
[Result "0-1"]
[ECO "B90"]
[BlackElo "1899"]
[Annotator "NA RC"]
[PlyCount "70"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:09]} 2. Nf3 {[%emt 0:00:02]} d6 {[%emt 0:00:04]} 3. d4 {[%emt 0:00:02]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:02]} Nf6 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:02]} a6 {[%emt 0:00:03]} 6. Be3 {[%emt 0:00:02]} e5 {[%emt 0:00:04]} 7. Nb3 {[%emt 0:00:05]} Be7 {[%emt 0:00:03]} 8. f3 {[%emt 0:00:02]} Nbd7 {[%emt 0:00:04]} 9. Qd2 {[%emt 0:00:09]} Qc7 {[%emt 0:00:03]} 10. O-O-O {[%emt 0:00:49]} b5 {[%emt 0:00:08]} 11. g4 {[%emt 0:00:07]} O-O {[%emt 0:00:21]} 12. g5 {[%emt 0:00:38]} Nh5 {[%emt 0:00:26]} 13. Rg1 {[%emt 0:00:41]} Bb7 {[%emt 0:00:14]} 14. h4 {[%emt 0:01:17]} Nb6 {[%emt 0:00:18]} 15. Bh3 {[%emt 0:01:20]} Nc4 {[%emt 0:00:13]} 16. Qe2 {[%emt 0:02:15]} Nxe3 {[%emt 0:00:30]} 17. Qxe3 {[%emt 0:00:05]} Nf4 {[%emt 0:00:02]} 18. Bg4 {[%emt 0:01:54]} Bc8 {[%emt 0:00:10]} 19. Nd5 {[%emt 0:01:02]} Nxd5 {[%emt 0:00:10]} 20. exd5 {[%emt 0:00:20]} Bxg4 {[%emt 0:00:08]} 21. Rxg4 {[%emt 0:00:16]} Rac8 {[%emt 0:00:04]} 22. Qd2 {[%emt 0:01:20]} f6 {[%emt 0:00:15]} 23. g6 {[%emt 0:01:42]} h6 {[%emt 0:00:09]} 24. h5 {[%emt 0:00:22]} f5 {[%emt 0:00:07]} 25. Rg2 {[%emt 0:00:23]} Bg5 {[%emt 0:00:30]} 26. Rxg5 {[%emt 0:00:06]} hxg5 {[%emt 0:00:05]} 27. Kb1 {[%emt 0:00:34]} e4 {[%emt 0:00:40]} 28. fxe4 {[%emt 0:00:14]} fxe4 {[%emt 0:00:03]} 29. Na5 {[%emt 0:00:05]} e3 {[%emt 0:00:05]} 30. Qe1 {[%emt 0:04:27]} Qxc2+ {[%emt 0:00:08]} 31. Ka1 {[%emt 0:00:09]} e2 {[%emt 0:00:05]} 32. Rb1 {[%emt 0:00:30]} Qxb1+ {[%emt 0:00:07]} 33. Kxb1 {[%emt 0:00:11]} Rf1 {[%emt 0:00:05]} 34. Nc6 {[%emt 0:00:49]} Rxe1+ {[%emt 0:00:07]} 35. Kc2 {[%emt 0:00:02]} Rd1 {[%emt 0:00:04]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.21"]
[White "Strovsky, Mikhail"]
[Black "Pascoal, Eduardo A"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2164"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,72,-3,-4,14,-24,-11,-30,2,-89,-34,-93,-60,-126,-113,-130,-126,-152,-150,-147,-84,-83,-86,-85,-83,-82,-84,-70,-76,-78,-31,-33,-23,-42,-42,-42,-49,-39,-50,-77,-68,-72,-32,-80,-67,-155,-154,-239,-232,-283,-269,-429,-422,-389,-381,-1399,-1379,-5373,-5269,-5185,-5177]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. Nge2 dxe4 6. a3 Be7 7. Bxf6 Bxf6 8. Nxe4 b6 {C12: French: Classical System: McCutcheon Variation.} (8... Nc6 {seems wilder.} 9. c3 Be7 10. N2g3 O-O 11. Bc4 Na5) 9. Nxf6+ (9. g3 {feels hotter.} Nd7 10. Bg2 Rb8 11. c4 O-O 12. Qc2) 9... Qxf6 {[#]} 10. Qd3 $146 ({Predecessor:} 10. Ng3 O-O 11. Bd3 Bb7 12. O-O Nd7 13. c3 c5 14. Be4 Bxe4 15. Nxe4 Qe7 16. dxc5 Nxc5 17. Nxc5 Qxc5 {1-0 (50) Velicka,P (2417)-Taggatz,M (2259) Bayern 2013}) 10... Bb7 {Black has an edge.} 11. f3 (11. Qg3 $11 {remains equal.}) 11... O-O ({Better is} 11... Nc6 $17) 12. O-O-O (12. Qc3 $1 $15) 12... Rd8 13. Kb1 (13. Qe3 $15) 13... c5 $17 14. c3 Nc6 15. Qe3 cxd4 16. cxd4 Ba6 ({Black should try} 16... Rac8 17. Nc3 Nxd4) 17. Nc3 Bxf1 18. Ne4 Qh6 19. Qxh6 gxh6 20. Rhxf1 Nxd4 21. Rd3 f5 22. Nc3 Nc6 23. Rfd1 Rxd3 24. Rxd3 $15 {[%mdl 4096] Endgame KRN-KRN} Rd8 25. Kc2 Kf7 26. Nb5 Rxd3 27. Kxd3 $17 {KN-KN} e5 28. Nd6+ Ke6 29. Nc4 (29. Nb5 $15) 29... h5 30. b4 {[#]} (30. Ne3 $17) 30... h4 $1 $19 31. Nd2 {[#]} Kd5 32. g3 (32. Nf1 $142) 32... hxg3 33. hxg3 Nd4 34. g4 $2 {[#]} (34. Nb1 Nxf3 35. Nc3+ Kc6 36. Ne2) 34... Nxf3 $1 {[%mdl 512] Black is clearly winning.} 35. Nf1 (35. Nb1 fxg4) 35... f4 36. Ke2 e4 {Weighted Error Value: White=0.89/Black=0.09} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "4.22"]
[White "Fernandes, Avelino"]
[Black "Ebersohn, Raymond Gerhard"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1887"]
[BlackElo "1726"]
[Annotator "NA RC"]
[PlyCount "111"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:16]} 2. Bf4 {[%emt 0:00:09]} d5 {[%emt 0:00:10]} 3. e3 {[%emt 0:00:05]} c5 {[%emt 0:00:05]} 4. c3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:11]} 5. Bg3 {[%emt 0:00:10]} Qb6 {[%emt 0:00:07]} 6. Qb3 {[%emt 0:00:49]} e6 {[%emt 0:01:22]} 7. Nd2 {[%emt 0:00:18]} Bd7 {[%emt 0:00:11]} 8. Ngf3 {[%emt 0:00:05]} Rc8 {[%emt 0:00:53]} 9. Be2 {[%emt 0:00:05]} Be7 {[%emt 0:00:33]} 10. h3 {[%emt 0:00:06]} O-O {[%emt 0:00:10]} 11. O-O {[%emt 0:00:04]} Na5 {[%emt 0:00:21]} 12. Qxb6 {[%emt 0:00:12]} axb6 {[%emt 0:00:04]} 13. Ne5 {[%emt 0:00:06]} Nc6 {[%emt 0:00:31]} 14. f4 {[%emt 0:00:06]} Rfd8 {[%emt 0:00:59]} 15. Bh2 {[%emt 0:01:02]} g6 {[%emt 0:01:20]} 16. Bd3 {[%emt 0:00:12]} Be8 {[%emt 0:00:29]} 17. g4 {[%emt 0:00:06]} Nd7 {[%emt 0:00:13]} 18. Rf3 {[%emt 0:00:33]} f6 {[%emt 0:00:55]} 19. Nxc6 {[%emt 0:00:32]} bxc6 {[%emt 0:00:08]} 20. f5 {[%emt 0:00:02]} e5 {[%emt 0:04:18]} 21. Ba6 {[%emt 0:01:47]} Rc7 {[%emt 0:00:11]} 22. dxe5 {[%emt 0:07:59]} fxe5 {[%emt 0:00:04]} 23. e4 {[%emt 0:01:02]} Ra7 {[%emt 0:00:07]} 24. Bf1 {[%emt 0:00:14]} Bg5 {[%emt 0:03:02]} 25. Rf2 {[%emt 0:02:14]} Be3 {[%emt 0:00:09]} 26. Kg2 {[%emt 0:00:05]} Bxf2 {[%emt 0:00:04]} 27. Kxf2 {[%emt 0:00:03]} Bf7 {[%emt 0:02:02]} 28. a3 {[%emt 0:00:07]} Re8 {[%emt 0:00:26]} 29. Rd1 {[%emt 0:00:16]} gxf5 {[%emt 0:00:31]} 30. exf5 {[%emt 0:00:19]} e4 {[%emt 0:01:21]} 31. Ke3 {[%emt 0:00:06]} c4 {[%emt 0:00:32]} 32. Be2 {[%emt 0:01:54]} Nc5 {[%emt 0:00:13]} 33. g5 {[%emt 0:01:22]} Nd3 {[%emt 0:00:09]} 34. Rb1 {[%emt 0:00:05]} c5 {[%emt 0:00:19]} 35. Bg4 {[%emt 0:00:24]} Rd7 {[%emt 0:00:40]} 36. f6 {[%emt 0:00:28]} Be6 {[%emt 0:00:07]} 37. Bh5 {[%emt 0:00:17]} d4+ {[%emt 0:02:08]} 38. Ke2 {[%emt 0:01:07]} Bf7 {[%emt 0:00:48]} 39. Bxf7+ {[%emt 0:00:12]} Kxf7 {[%emt 0:00:04]} 40. Nxc4 {[%emt 0:00:05]} Re6 {[%emt 0:00:16]} 41. a4 {[%emt 0:01:07]} Ra7 {[%emt 0:00:50]} 42. b3 {[%emt 0:00:05]} b5 {[%emt 0:00:10]} 43. Nd6+ {[%emt 0:00:07]} Rxd6 {[%emt 0:00:03]} 44. Bxd6 {[%emt 0:00:03]} bxa4 {[%emt 0:00:02]} 45. cxd4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:20]} 46. bxa4 {[%emt 0:00:04]} Rd7 {[%emt 0:00:30]} 47. Rb6 {[%emt 0:00:23]} Kg6 {[%emt 0:00:29]} 48. h4 {[%emt 0:00:10]} Kh5 {[%emt 0:00:44]} 49. a5 {[%emt 0:00:14]} Kg4 {[%emt 0:00:26]} 50. a6 {[%emt 0:00:05]} Nf4+ {[%emt 0:00:08]} 51. Bxf4 {[%emt 0:01:07]} Kxf4 {[%emt 0:00:04]} 52. f7 {[%emt 0:00:02]} d3+ {[%emt 0:00:04]} 53. Kd1 {[%emt 0:00:04]} Rd8 {[%emt 0:00:37]} 54. Rf6+ {[%emt 0:00:05]} Ke3 {[%emt 0:00:04]} 55. f8=Q {[%emt 0:00:04]} Rd5 {[%emt 0:00:04]} 56. Qb4 {[%emt 0:00:13]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.1"]
[White "Bellahcene, Bilel"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2510"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,82,0,6,0,0,0,29,22,28,15,35,25,38,-32,-38,-34,-26,-27,-17,-22,33,35,56,38,86,76,98,33,66,67,78,0,0,-4,0,-14,-11,-49,-20,-13,0,-122,-114,-133,-22,-22,-27,-40,-27,-13,0,0,0,0,0,0,0,0,0,0,0,-45,0,-17,-17,-306,-291,-29990,-29991]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. h3 O-O 9. Be3 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Qa5 {aiming for ...cxd4.} 10. Bd2 {outshines the older 10.Qd2.} Nc6 {[%cal Rc5d4]} 11. Be2 {White has an edge.} Qa3 {[%cal Rc5d4]} 12. d5 Ne5 13. Nxe5 Bxe5 {[#]} 14. O-O $146 (14. Qb3 $14 Qa5 15. f4) ({Predecessor:} 14. Qb3 Qxb3 15. axb3 e6 16. f4 Bf6 17. Bc4 Bd7 18. dxe6 fxe6 19. O-O b5 20. Be2 {1-0 (62) Tugstumur,Y (2116)-Omorjan,D (2292) Paracin 2018}) 14... Bxc3 $15 15. Bxc3 Qxc3 16. Rc1 Qe5 17. Qd3 f5 (17... b6 $11) 18. Rxc5 $14 fxe4 19. Qe3 Bf5 20. g4 Bc8 {[#]} 21. Rc4 (21. Rfc1 $1 $16) 21... Qd6 22. Rxe4 Rf7 23. Re5 (23. Rd1 $16) 23... Bd7 $11 24. f4 Rc8 25. Bd1 a5 26. h4 Qb4 27. Re4 Rc3 28. Qe1 (28. Rxb4 $11 Rxe3 29. Rxb7 Bxg4 30. Rb3 (30. Bxg4 Rg3+ {[%mdl 64] Double Attack} 31. Kh2 Rxg4 $15 {[%mdl 64] Double Attack}) (30. Rb8+ Kg7 $15) 30... Rxb3 31. Bxb3) 28... Qc5+ $17 29. Kh2 Qxd5 ({Black should play} 29... h5 $17 30. Qf2 Qxf2+ 31. Rxf2 hxg4) 30. Qxc3 $11 Qxe4 31. Qd2 e6 {...Bb5 is the strong threat.} 32. Kg3 $1 Bc6 {Threatens to win with ...Rd7.} 33. Bf3 $1 {[%cal Rf3e4]} Qc4 34. Rc1 Qa4 $36 {[%mdl 2048] Black is more active.} 35. Bxc6 bxc6 {[%mdl 4096] Endgame KQR-KQR} 36. Re1 Qa3+ 37. Re3 Qb4 38. Qf2 Qd6 39. Qf3 e5 40. f5 {[%mdl 8192]} (40. Rxe5 $11 {and White stays safe.} Qxe5 41. fxe5 Rxf3+ 42. Kxf3) 40... gxf5 $19 {Strongly threatening ...f4+.} 41. gxf5 {[#]} (41. Rd3 $19 f4+ 42. Kg2) 41... e4+ $1 {[%mdl 64] Discovered Attack.  Weighted Error Value: White=0.46/Black=0.17} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.2"]
[White "Adly, Ahmed"]
[Black "Beukes, Dante M"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2615"]
[BlackElo "2206"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,71,33,21,0,0,0,29,19,26,10,12,8,12,0,64,58,54,53,64,15,24,9,31,39,65,31,144,64,98,96,177,172,168,175,249,248,236,187,287,292,343,340,337,332,359,289,377,372,672,659,841,783,839,873,797,770]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6 7. Nc3 e5 8. dxe5 {now supersedes 8.d5.} dxe5 9. Bg5 Be6 10. b3 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} h6 11. Be3 Ng4 12. Bc5 {White has an edge.} Re8 13. e4 b6 14. Ba3 Nd4 15. h3 (15. Re1 {keeps more tension.} c5 16. Nd5 Bd7 17. Bb2 Rc8 18. Qd2) 15... Nxf3+ (15... Nf6 $11) 16. Qxf3 $14 Nf6 17. Rfd1 $36 {[%mdl 2048] White has good play.} Qc8 18. Kh2 {[#]} c6 $146 ({Predecessor:} 18... a6 19. Rac1 c5 20. Nd5 Nxd5 21. cxd5 Bd7 22. Bf1 Bb5 23. Bc4 Qd7 24. Qe2 Rec8 {1-0 (46) Davtyan,A (1749)-Trajkovic,M (1587) Budva 2013}) 19. Bd6 Nh7 20. Qe2 h5 21. Rac1 c5 {[#]} (21... h4 $14) 22. b4 ({White should try} 22. f4 $1 $16) 22... Qa6 23. Nb5 Rac8 {[#]} (23... cxb4 $16 24. Nc7 (24. Bxb4 Rec8 $14) 24... Qa3) 24. bxc5 $1 $18 bxc5 25. Nc7 {[%mdl 64] Double Attack} Qc6 (25... Rxc7 $142 26. Bxc7 Qc6) 26. Nxe8 Rxe8 27. Qe3 Rc8 (27... Bf8 $142) 28. Qc3 f6 29. f4 exf4 30. gxf4 Qa4 31. Qb3 Qa5 32. Qb7 {Black must now prevent f5!} Qd8 $2 (32... Qb6 33. Qe7 Bf7) 33. f5 {White is clearly winning.} gxf5 34. exf5 Bf7 35. Bf4 Qe8 36. Rd7 {Weighted Error Value: White=0.13/Black=0.52} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.3"]
[White "Seddaoui, Yamine"]
[Black "Amin, Bassem"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2127"]
[BlackElo "2693"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,76,-13,6,-25,-8,-8,0,-31,-29,-26,-18,-16,0,-31,-31,-59,-20,-20,-6,-19,-28,-36,-35,-50,-32,-78,-59,-224,-239,-291,-261,-297,-285,-276,-279,-260,-251,-510,-509,-494,-480,-454,-421,-475,-493,-635,-647,-646,-643,-622,-634,-618,-638,-729,-752,-736,-703,-736,-729,-1307,-1302,-1300,-1300,-1297,-1296]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. a3 c4 7. g3 Nge7 8. h4 {C02: French: Advance Variation.} Na5 9. Nbd2 Nc8 10. Bh3 {The position is equal.} Nb6 11. O-O Be7 12. Ne1 Qc7 {[#]} 13. Qe2 $146 ({Predecessor:} 13. f4 O-O-O 14. Ng2 f5 15. exf6 gxf6 16. Qe1 e5 17. Bxd7+ Nxd7 18. Ne3 Nb6 19. Nf5 e4 20. Qe2 h5 21. Rf2 Qd7 22. Nxe7+ Qxe7 23. Nf1 f5 {0-1 (23) Seddaoui,Y (2160)-Volkov,S (2607) Algiers 2016}) 13... O-O-O 14. f4 f5 15. exf6 $1 gxf6 16. Bxe6 Bd6 17. Bxd7+ Qxd7 18. Kh2 Rhg8 19. Qg2 Rg4 20. Nc2 $2 {Loses the game.} ({Better is} 20. Rf3 $1 $15) 20... Rdg8 $19 21. Ne3 Rxg3 22. Qxg3 Rxg3 23. Kxg3 Qg7+ 24. Kf3 Qg6 25. f5 $2 (25. Ng2) 25... Qh5+ {[%mdl 64] [#] Double Attack. Black is clearly winning.} 26. Kf2 Qxh4+ 27. Ke2 Kd7 28. Rg1 Kc6 29. Rg4 Qh1 30. Nf3 {And now Rh4 would win.} Nb3 $1 {[%csl LRa1,LRc1][%mdl 64] [#] Double Attack} 31. Rg1 Qh5 32. Rb1 Qe8 33. Nd2 Bf4 34. Nxb3 cxb3 35. Kf2 Qe4 36. Bd2 Bxe3+ 37. Bxe3 Nc4 38. Rbe1 Nxb2 {Weighted Error Value: White=0.60/Black=0.05} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.4"]
[White "Silva, David"]
[Black "Oatlhotse, Providence"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2258"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,18,18,13,31,8,25,15,58,18,18,0,0,-16,29,39,83,74,108,60,90,63,58,52,46,14,22,0,0,0,0,0,0,0,0,8,9,14,28,0,0,0,0,0,0,0,0,0,0,0,14,0,0]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. Nf3 Bxc5 6. Bd3 {B12: Caro-Kann: Advance Variation.} Ne7 {is now debated instead of 6...Nc6.} 7. c3 Nec6 8. O-O {[#] White has an edge.} Qc7 $146 ({Predecessor:} 8... a5 9. Bf4 b6 10. Ng5 g6 11. Nf3 Ba6 12. Bxa6 Rxa6 13. Nd4 Nxd4 14. cxd4 Be7 {0-1 (84) Temichev,E (1954)-Gagarinov,S (2103) Zhukovsky 2012}) 9. Qa4 Nd7 {[%cal Bb8d7,Bd7b6,Bb6c4][%mdl 32]} 10. Bf4 Be7 11. b4 Nb6 12. Qc2 Bd7 {[#]} 13. a4 $1 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rc8 {White must now prevent ...Nxb4!} 14. Qe2 Nb8 15. a5 Nc4 16. Nd4 a6 17. Bg3 Nc6 18. Nf3 Na7 19. Nd4 Nb5 20. Nxb5 Bxb5 21. f4 g6 22. Bf2 h5 23. Bd4 Qd7 24. Nd2 (24. Rf2 {looks sharper.} h4 25. h3 Kf8 26. Qg4 Bd8 27. Qf3) 24... Nxd2 {The position is equal.} 25. Qxd2 Bxd3 26. Qxd3 Rc4 27. Rab1 Qb5 28. Qe3 Kd7 29. Rbe1 Qc6 30. Rf3 Kc8 {Weighted Error Value: White=0.10/Black=0.09} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.5"]
[White "Wanyama, Harold"]
[Black "Miguel, Sergio"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2312"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,127,10,11,0,18,0,0,-18,-11,0,-10,-31,-30,-22,41,37,45,35,56,51,122,63,53,-8,19,0,54,41,39,-14,-14,-25,61,58,70,14,19,19,19,19,18,19,22,20,20,13,20,19,17,10,17,11,18,13,28,40,54,21,30,0,16,12,11,8,11,8,12,12,10,8,10,14,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000,-28000,27999,27999,27999,27999,27999,27999,27999,27999,27999,27998,27997,27999,27997,27997,27998,27998]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. O-O d5 9. Ne5 Nfd7 10. Nxd7 {E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations.} Nxd7 11. Re1 O-O {[#]} 12. Qc2 $146 {The position is equal.} ({Predecessor:} 12. Nc3 Rc8 13. e4 dxc4 14. e5 b5 15. bxc4 b4 16. Ne4 Bxc4 17. Qh5 Bd5 18. Ng5 {0-1 (24) Rauramaa,K-Nyysti,S (2445) Espoo 2003}) 12... Bf6 13. Bc3 Rc8 14. Nd2 c5 15. dxc5 d4 (15... Bxc3 $11 16. Qxc3 Rxc5) 16. Bb2 $14 bxc5 17. Ne4 $36 {[%mdl 2048] White is pushing.} Be7 18. e3 Qb6 (18... e5 $14) 19. Rad1 (19. exd4 $16 cxd4 20. Bxd4 $1 {[%mdl 512]} Qxd4 21. Rad1) 19... e5 $1 20. Nd2 (20. f4 $14) 20... Bd6 21. Ne4 Be7 $1 22. exd4 cxd4 {[#]} 23. Nd2 (23. Nc3 $1 $14 Bxc4 24. bxc4 Rxc4 {[%mdl 64] Pin} 25. Ba1 $1) 23... Bb4 24. a3 Bd6 (24... Bxd2 $11 25. Rxd2 Rfd8) 25. b4 Bb7 26. c5 (26. Ne4 $14 Be7 27. c5) 26... Bxg2 $11 27. Kxg2 Nxc5 28. bxc5 Rxc5 29. Qb3 Rb5 30. Qf3 Rxb2 31. Nc4 Rb3 {[%cal Rb3f3]} 32. Nxb6 Rxf3 33. Kxf3 axb6 {[%mdl 4096] Endgame KRR-KRB} 34. Ke4 Bxa3 35. Kxe5 Bc5 36. Kd5 g6 37. f4 {[%mdl 1024] White has compensation.} Kg7 38. g4 Kf6 39. Re5 Rd8+ 40. Ke4 h6 41. h4 Ra8 42. h5 Ra3 43. g5+ Kg7 $1 44. hxg6 Re3+ 45. Kf5 {Strongly threatening gxh6+.} fxg6+ 46. Ke6 {Black must now prevent Rxe3.} hxg5 47. fxg5 Rxe5+ 48. Kxe5 {Hoping for Ke6. KR-KB} Kf7 49. Rf1+ Ke7 50. Ke4 Ke8 51. Rf6 Be7 52. Rxg6 (52. Re6 {looks sharper.} Kd7 53. Re5 Bd6 54. Rd5 Kc6 55. Rxd4 b5 56. Kd3) 52... Kf7 53. Kf5 d3 $1 {[%cal Rd3d2] ...d2 is the strong threat.} 54. Rxb6 $2 {[%mdl 8192]} (54. Rh6 $11 d2 55. Rh7+ Kg8 56. Rh1) 54... d2 55. Rb1 Ba3 $4 {[%mdl 8192]} (55... Bd6 56. Rd1 Bb4) 56. g6+ Kg7 $4 {[%mdl 8192] [#]} (56... Kf8 57. Kg5 Bb2 {[%mdl 64] Promotion}) 57. Rb7+ $1 {White mates.} Kg8 58. Rd7 Bb4 59. Kg5 Be7+ 60. Kh6 Kf8 61. Rxd2 Kg8 62. Rd7 Bf8+ 63. g7 Be7 64. Rc7 {Weighted Error Value: White=0.26/Black=0.23} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.6"]
[White "Paiva, Donaldo"]
[Black "Bouzidi, Ahmed"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2230"]
[BlackElo "2163"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,20,16,4,13,-14,-15,-2,-6,-11,-1,9,31,55,48,38,32,35,75,72,96,53,48,52,96,80,144,116,112,107,120,119,96,49,70,0,140,136,141,152,185,47,47,47,47,47,50,-104,18,9,97,84,106,115,669,660,596,583,573,556,1251,1193]} 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nf3 Bg7 5. Nc3 e5 6. a3 Nge7 7. b4 d6 8. Rb1 Rb8 9. O-O O-O 10. d3 b6 11. Bd2 {A37: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3.} Nd4 12. Ne1 Bb7 {[#]} 13. Bxb7 $146 {The position is equal.} ({Predecessor:} 13. Qa4 Bxg2 14. Nxg2 Rb7 15. f4 exf4 16. Nxf4 Ndf5 17. Ncd5 Nxd5 18. Nxd5 Nd4 19. e3 {1-0 (31) Ibarra Chami,L (2481)-Arribas Robaina,M (2321) Puebla 2013}) 13... Rxb7 14. Nc2 Nxc2 15. Qxc2 cxb4 16. axb4 d5 17. Rfc1 dxc4 18. dxc4 Rc7 19. Nb5 Rd7 20. Be1 a6 21. Nc3 {[%cal Bb5c3,Bc3a4,Ba4b6][%mdl 32]} Qa8 22. Na4 Qa7 (22... Rb7 $142) 23. c5 b5 24. Nb6 Rdd8 25. Ra1 Nc6 26. e3 e4 $1 27. Ra3 ({White should play} 27. Qxe4 $14 Bxa1 28. Rxa1) 27... Ne5 (27... Qb7 $11) 28. Qxe4 $16 f5 29. Qg2 g5 30. Bc3 (30. f4 $1 $18 {[%cal Rf4e5]} gxf4 31. exf4 (31. gxf4 Nd3 $11)) 30... Nd3 $14 {[%cal Rd3c1]} 31. Rb1 {And now Bd4 would win.} Bxc3 32. Rxc3 Nxb4 33. Qh3 $2 {[#]} (33. h4 $14 {stays ahead.} Qg7 34. Rcc1) 33... Nd3 ({Black should try} 33... Qg7 $1 $17 {[%cal Rg7c3]} 34. Ra3 (34. Rcc1 Nd3) 34... Qe7) 34. Qh6 $11 {Black must now prevent Rd1.} Qg7 (34... Qe7 $11) 35. Qxg7+ $16 Kxg7 36. c6 $36 {[%mdl 2048] White has strong initiative.} Ne5 $2 {[%mdl 8192] This costs Black the game.} (36... b4 $16 37. Rc2 Rd6) 37. c7 $18 {White is clearly winning.} Rc8 38. Nxc8 Rxc8 39. Rd1 {aiming for Rd8.} Kf6 40. Rd8 {Weighted Error Value: White=0.27/Black=0.51} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.7"]
[White "Mosutha, Thuso"]
[Black "Ortega Amarelle, Mariano"]
[Result "1/2-1/2"]
[ECO "B27"]
[WhiteElo "2036"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,-18,33,29,34,31,36,42,38,13,32,15,9,5,32,-20,-6,-11,-10,-12,-10,-25,-28,-31,-27,-27,-22,-13,-20,-32,-29,-53,-52,-45,-50,-49,-45,-65,-30,-31,-17,-16,-28,-18,-32,-33,-31,-40,0,0,0,-6,-8,-1,0,0,0,0,0,0,0,0,0,0,0,-5,0,0,0,-31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. d4 cxd4 3. c3 g6 4. Nf3 Bg7 5. Bc4 d3 (5... dxc3 $11 6. Nxc3 Nc6) 6. O-O {B27: Sicilian: 2 Nf3, unusual Black 2nd moves.} Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 7. Qxd3 d6 8. Rd1 {White is slightly better.} Qc7 9. h3 Nf6 {[#]} 10. Bf4 $146 ({Predecessor:} 10. Na3 a6 11. Bb3 O-O 12. Be3 Na5 13. Nc4 Nxc4 14. Bxc4 b5 15. Bd5 Nxd5 16. exd5 {½-½ (50) Vachtfeidl,P (1948)-White,M (1828) England 2013}) 10... O-O 11. Nbd2 Na5 12. Bb5 ({White should try} 12. e5 $14 Bf5 13. Qf1 Nxc4 14. Nxc4 (14. Qxc4 Qxc4 15. Nxc4 dxe5 $11) 14... dxe5 15. Bxe5) 12... a6 $11 13. Ba4 b5 14. Bc2 Bb7 15. Bh2 Nc4 16. Rab1 Rfd8 17. Re1 Ne5 18. Nxe5 dxe5 19. Qe2 Nh5 20. Bb3 Nf4 21. Bxf4 exf4 22. Nf3 e6 23. Red1 Qc6 24. Bc2 a5 25. Nd4 Bxd4 26. cxd4 Qb6 27. Qd2 Rac8 28. Rbc1 Rc4 {[%cal Rd8d4]} 29. Qxf4 Rcxd4 30. Rxd4 Rxd4 31. Rd1 {[#] aiming for Qb8+.} Rxd1+ 32. Bxd1 b4 33. Bf3 Qd8 34. Qe5 Bc6 35. Qc5 Ba8 36. Qa7 Kg7 37. Qc5 h5 38. h4 Bb7 39. g3 Ba6 (39... Qf6 $5 {[%cal Rf6f3]} 40. Kg2 Qxb2 41. Qxa5 e5 $15) 40. Kg2 {The position is equal.} Qd3 41. a3 bxa3 42. bxa3 a4 43. e5 Bc4 44. Qe3 Qf1+ 45. Kh2 Bb3 46. Bc6 (46. Qc5 {looks sharper.} Qe1 47. Qd4 Qc1 48. Qd6 Qa1 49. Be4) 46... Bd5 47. Bxd5 exd5 {[%mdl 4096] Endgame KQ-KQ} 48. Qf4 Kg8 49. Qf6 Qe2 50. Qd8+ Kh7 51. Qf6 Kg8 52. Qd8+ Kg7 53. Qf6+ Kf8 54. Qd8+ Kg7 55. Qf6+ Kg8 {Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.8"]
[White "Kayonde, Andrew"]
[Black "Amdouni, Zoubaier"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2393"]
[BlackElo "2229"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,83,14,2,26,0,3,5,24,0,0,-8,-6,0,83,0,0,0,0,0,-10,-87,-91,-93,-43,-53,-52,-41,-50,-44,-31,-21,0,0,0,0,0,0,0,0,0,-58,-50,-59,-54,-44,-22,-22,-20,-26,-8,-8,-8,-12,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. c4 e6 5. Nbd2 Nbd7 6. Bd3 Bd6 7. O-O O-O 8. e4 e5 9. cxd5 cxd5 10. exd5 exd4 11. Ne4 Nxe4 12. Bxe4 Nf6 {D30: Queen's Gambit Declined: Systems without Nc3.} 13. Qxd4 Nxe4 14. Qxe4 Qf6 15. Qd4 {[#]} Qf5 $146 ({Predecessor:} 15... Qxd4 16. Nxd4 Bd7 17. Be3 Rac8 18. Rac1 a6 19. Nb3 Rxc1 20. Rxc1 Rc8 21. Na5 Rxc1+ 22. Bxc1 {1-0 (51) Skatchkov,P (2486)-Utnasunov,A (2443) Tula 2009}) 16. Bd2 Rd8 17. Rfe1 Qh5 {[#]} (17... b6 $11 {keeps the balance.}) 18. Bc3 (18. Bb4 $1 $16 {[%cal Rb4d6] Hoping for Bxd6.} Bxb4 19. Re5 (19. Qxb4 Qxd5 20. Re5 Qc6 $14)) 18... f6 $11 19. Re3 b6 {aiming for ...Bc5.} 20. Qc4 Bb7 21. Rd1 {[#]} (21. Rd3 $11) 21... Bxh2+ $1 $17 {[%mdl 512]} 22. Kf1 {Threatening d6+.} (22. Nxh2 Qxd1+) 22... Rac8 23. Qh4 $1 {[%cal Rh4h5]} Qxh4 ({Much weaker is} 23... Rxd5 $6 24. Rxd5 Qxh4 25. Nxh4 $16) 24. Nxh4 {next g3 is good for White.} Ba6+ ({Much worse is} 24... Rxd5 $6 25. Rxd5 Bxd5 26. g3 $16) 25. Ke1 Bf4 26. Re6 Kf7 27. Nf5 Rc7 {And now ...Rxd5! would win.} 28. g3 Rxd5 29. Rxf6+ $1 gxf6 30. Rxd5 Ke6 31. Rd8 (31. Rd4 $11 Be5 32. Ra4) 31... Kxf5 $15 32. gxf4 {[%mdl 4096] Endgame KRB-KRB} Re7+ 33. Kd1 Kxf4 34. Bxf6 Rf7 35. Bd4 h5 36. Be3+ {The position is equal.} Kf3 37. Rh8 Rd7+ 38. Ke1 Kg4 39. Rg8+ Kf3 40. Rh8 Kg4 41. Rg8+ Kf3 42. Rh8 {Accuracy: White = 84%, Black = 91%.} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.9"]
[White "Hamzaoui, Khalil"]
[Black "Zaibi, Amir"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "1883"]
[BlackElo "2381"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,115,17,0,81,82,83,72,81,71,75,80,77,75,83,63,79,56,97,107,148,138,148,81,88,0,0,0,50,63,75,59,93,8,11,16,27,27,29,27,37,0,0,0,0,0,0,-60,0,0,0,0,0,0,0,0,125,0,0,0,0,0,0,-92,-85,-85,-85,-154,-72,-234,-228,-173,-242,-230,-158,-160,-91,-154,-137,-157,-148,-227,-222,-204,-215,-194,-182,-377,-373,-375,0,0,16,0,0,0,43,0,0,0]} 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Rd1 Bc6 10. Nc3 {10.Bg5 gains popularity.} a5 {E05: Open Catalan: 5 Nf3 Be7.} (10... Bxf3 $11 {remains equal.} 11. Bxf3 Nc6) 11. e4 $1 $16 Na6 {[%cal Bb8a6,Ba6b4,Bb4d3][%mdl 32]} 12. Ne5 Nb4 {White is better.} 13. Qe2 Nd3 14. Nxc4 Nxc1 15. Raxc1 Bb4 16. Ne5 Be8 17. Qc4 {[#]} Qe7 $146 ({Predecessor:} 17... Nd7 18. Nxd7 Qxd7 19. Na2 Qxa4 20. Nxb4 axb4 21. Qxc7 Bc6 22. d5 Rac8 23. Qb6 Qb5 24. Qxb5 Bxb5 {1-0 (52) Dragnev,V (2514)-Neumair,J (2123) Karlsruhe 2019}) 18. Nd3 Rd8 19. e5 Nd5 20. Bxd5 (20. Nxd5 $142 exd5 21. Bxd5) 20... Bxc3 21. Rxc3 (21. Qxc3 $16 Rxd5 22. Nf4 (22. Qxc7 Qxc7 23. Rxc7 Bxa4 $11)) 21... Rxd5 $11 22. Nf4 Rd7 23. b3 Qg5 24. h4 Qg4 25. Qe2 (25. Rcd3 $16) 25... Qxe2 26. Nxe2 f6 27. Rdc1 fxe5 28. dxe5 Rd2 29. Nf4 (29. R3c2 {looks sharper.} Rd5 30. Rc5 Rf3 31. Rxc7 Bc6 32. Nf4) 29... Bc6 30. R3c2 Rxc2 31. Rxc2 {[%mdl 4096] Endgame KRB-KRN} Rd8 {( -> ...Rd1+)} 32. Rc1 (32. Nxe6 $2 {gets mated.} Rd1+ 33. Kh2 Rh1#) (32. f3 $11) 32... Kf7 ({Better is} 32... Bf3 $1 $15) 33. Kf1 Rd2 34. Ke1 Rb2 35. Rc3 Ke7 36. Nd3 Ra2 (36... Rb1+ $11 37. Ke2 Kd8) 37. Nc1 (37. Nc5 $1 $16) 37... Rb2 38. Nd3 Rb1+ 39. Ke2 Kd8 40. Nc1 (40. Nf4 $11) 40... Rb2+ $1 $17 41. Ke3 Bd5 42. f4 (42. h5 $142) 42... h5 (42... b6 $142 43. Rd3 c5) 43. Kd4 $2 (43. f5 $17) 43... b6 $19 44. f5 c5+ 45. Ke3 Ke7 ({Don't go for} 45... exf5 $2 46. Rd3 $18) 46. fxe6 Bxe6 (46... Kxe6 $142 47. Nd3 Rb1 48. Nf4+ Kxe5 49. Nxd5 Kxd5 50. Rd3+ Ke5) 47. Kf4 (47. Rd3 $142) 47... Rf2+ 48. Ke3 Rg2 49. Ne2 (49. Ke4 $17 {keeps fighting.}) 49... Bg4 50. Nf4 Rxg3+ 51. Kd2 {[#]} Rg1 52. Nd5+ $2 (52. Rd3 {is a better defense.}) 52... Ke6 53. Nxb6 {[#]} Kxe5 $2 ({Black should play} 53... g5 $1 $19 {[%cal Rg5h4]} 54. Rxc5 (54. hxg5 $2 h4 $19) 54... gxh4) 54. Rxc5+ $11 {[%mdl 64] Double Attack} Kd4 55. Rc4+ Ke5 56. Rc5+ {[%mdl 64] Double Attack} Kd4 57. Rc4+ Ke5 58. Rc5+ {[%mdl 64] Double Attack. White used his chance.  Weighted Error Value: White=0.31/Black=0.29} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.10"]
[White "Abdelazeez, Mohamed Abdalla"]
[Black "Simoes, Joao"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2214"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,44,0,0,-32,-11,-30,0,0,1,-22,-14,-54,-47,-53,-37,-140,-139,-309,-291,-399,-404,-388,-392,-421,-415,-516,-516,-508,-502,-541,-520,-500,-504,-488,-468,-958,-949]} 1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. Nd2 b6 5. Qe2 Bb7 6. f4 {[#] D00: 1 d4 d5: Unusual lines.} Ne4 $146 ({Predecessor:} 6... c5 7. c3 Nbd7 8. Ngf3 Be7 9. O-O Rc8 10. Ne5 O-O 11. g4 Ne4 12. Rf3 f5 {1-0 (23) Da Veiga,O (1590)-Coan,D Sao Bento do Sul 2015}) 7. Ngf3 Bd6 8. O-O {The position is equal.} Nd7 9. c4 O-O 10. Bxe4 dxe4 11. Ng5 Nf6 12. g4 (12. b3 $15) 12... c5 $17 13. Qg2 $2 {[#] Loses the game.} (13. dxc5 $17 {might work better.} Bxc5 14. Nb3) 13... cxd4 $19 14. exd4 Be7 15. Nb3 Rc8 16. Qe2 Ba6 17. Rd1 Bxc4 {Black is clearly winning.} 18. Qg2 Bd3 19. Rxd3 exd3 20. Qh3 Qd5 21. Qxd3 h6 22. Ne4 (22. Nf3 $142) 22... Qxe4 {Weighted Error Value: White=0.75/Black=0.05} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.11"]
[White "Calicoca, Wilton Inacio"]
[Black "Joelson, Ricardo"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2122"]
[BlackElo "2017"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,62,-19,22,-16,11,-5,15,-18,16,-15,40,-4,0,0,0,-8,-6,-66,-31,-104,-58,-97,-62,-141,-186,-223,-264,-226,-219,-335,-337,-364,-362,-687,-683,-861,-740,-1005,-753,-884,-858,-1289,-1247,-1356,-1293,-29991,-29992,-29995,-1325,-29996,-29997,-29997,-29998,-29998,-29999]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 Nc6 5. Be2 h6 6. a3 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Ba5 (6... Bxc3+ $5 7. bxc3 d5 $11) 7. h3 d6 8. Bd2 {The position is equal.} Be6 9. O-O (9. b4 $5 {[%cal Rb4a5]} Bb6 10. Na4 $11) 9... Qd7 ({Black should play} 9... a6 $11) 10. Kh2 {[#]} (10. b4 $5 {[%cal Rb4a5]} Bb6 11. Na4 $11) 10... g5 $146 ({Predecessor:} 10... a6 11. b4 Bb6 12. Be3 O-O 13. Qd2 Ne7 14. d4 c6 15. dxe5 Bxe3 16. Qxe3 dxe5 17. Nxe5 {½-½ (79) Vrdoljak,J-Grgurevic,B (1541) Osijek 2012}) 11. b4 Bb6 12. b5 Ne7 13. Ng1 (13. a4 $11) 13... Ng6 14. Be3 (14. a4 $15) 14... g4 {White is on the road to losing.} 15. d4 {Threatens to win with d5.} gxh3 {White must now prevent ...Ba5.} 16. gxh3 ({Better is} 16. g3 $1 $15) 16... Qe7 $17 17. d5 Bd7 18. a4 h5 19. Qd2 {[#]} (19. Kh1 $142) 19... Ng4+ $1 $19 {[%mdl 512]} 20. Bxg4 hxg4 21. Bg5 $2 (21. a5 Bxe3 22. fxe3) 21... f6 22. Be3 Qh7 {Strongly threatening ...g3+!} 23. Bxb6 axb6 24. Qe3 Nf4 {[%cal Rf4h3]} 25. Nce2 Nxe2 26. Qxe2 g3+ 27. Kxg3 Bxh3 28. Kf3 Bg4+ 29. Kxg4 Qh5+ {Black mates.} 30. Kg3 Rg8+ 31. Qg4 Qxg4+ {Weighted Error Value: White=1.17/Black=0.43} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.12"]
[White "Gohil, Mehul"]
[Black "Cambando, Jose"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1991"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,47,61,57,24,25,39,141,9,6,0,66,63,138,115,141,150,167,167,187,157,231,191,250,277,236,127,287,204,1329,1291,1318,1293,1375,1365,1311,1289,29993,29994,29994,29995]} 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5 4. Be5 f6 5. e3 h5 {[#]} 6. Bd3 $1 {A45: Trompowsky Attack.} d5 {[#]} 7. f3 $1 Bf5 (7... Nd6 8. Bxd6) 8. Bg3 ({White has to play} 8. fxe4 $16 {Hoping for Bxc7.} dxe4 9. Bb5+ c6 10. Bxb8) 8... Nxg3 $11 9. hxg3 {[#]} Bxd3 $146 (9... e6 $11) ({Predecessor:} 9... Qd7 10. g4 Bxd3 11. Qxd3 h4 12. Qg6+ Kd8 13. Nc3 Nc6 14. O-O-O Kc8 15. Qf7 b6 16. Qxd5 Qxd5 17. Nxd5 {0-1 (51) Purtseladze,M (2274)-Fier,A (2560) chess.com INT 2020}) 10. Qxd3 $14 Kf7 ({Black should play} 10... Nc6 $14) 11. Nc3 e6 12. O-O-O Bd6 13. f4 g4 14. e4 c6 (14... dxe4 $16 {is a better defense.} 15. Nxe4 (15. Qxe4 Nd7 $16) 15... Qd7) 15. Nge2 Na6 (15... f5 $142) 16. f5 $18 Qd7 17. Rdf1 (17. fxe6+ $18 Qxe6 18. Rdf1) 17... Nb4 $2 {This costs Black the game.} (17... e5 $16) 18. Qe3 dxe4 $2 (18... e5 19. a3 exd4 20. Qxd4 (20. Nxd4 c5 $16) 20... Na6) 19. fxe6+ Qxe6 20. Nxe4 Rag8 21. Rxf6+ Qxf6 22. Nxf6 {And now Rf1 would win.} Kxf6 23. Rf1+ Kg6 24. Qe6+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.41/Black=0.69} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.13"]
[White "Kamara, Ansumana"]
[Black "Alberto, Manuel"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1899"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,83,15,11,0,7,25,12,-15,-15,-11,41,23,141,145,120,139,134,129,134,139,258,-385,-384,-366,44,-178,-181,-520,-508,-501,-395,-390,-388,-381,-364,-348,-259,-270,-149,-214,-209,-197,-94,-198,-200,-209,-189,-202,-191,-175,0,0,0,-675,-523,-480,-498,-470,-442,-1122,-1129,-988,-905,-29992,-29993,-29998,-29999,-29999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2 Nbd7 10. g3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Rc8 11. O-O-O Be7 12. h3 {The position is equal.} b5 13. Kb1 {[#]} b4 $146 (13... Nb6 $11) ({Predecessor:} 13... Qc7 14. a3 g6 15. Qf2 Qb7 16. Na5 Qc7 17. Nb3 Qb7 18. Bd3 Rxc3 19. bxc3 d5 {0-1 (48) Savchenko,B (2564)-Ter Sahakyan,S (2640) chess.com INT 2020}) 14. Nd5 $14 Bxd5 (14... Nxd5 $11 {remains equal.} 15. exd5 Bf5) 15. exd5 $16 a5 16. Bb5 O-O 17. g4 Nb6 18. Nxa5 Nbxd5 (18... Nfxd5 $16 19. gxh5 Nxe3 20. Qxe3 Bg5) 19. g5 $4 {[%mdl 8192]} Qxa5 $19 20. gxf6 {[#]} Nxf6 (20... Nc3+ $1 $19 {[%mdl 512]} 21. bxc3 (21. Qxc3 bxc3) 21... bxc3) 21. Qd3 $2 (21. a4 $14 {was forced to keep a grip.}) 21... d5 {...Ra8 is the strong threat.} 22. b3 $2 (22. Bd2) 22... e4 23. fxe4 Nxe4 24. Bd4 Bf6 {Hoping for ...Bxd4.} 25. Bxf6 Nxf6 26. Ba4 Rc3 27. Qf5 Rfc8 (27... h4 $19 28. Qg5 Rg3 29. Qxh4 Ne4) 28. Rh2 (28. Rhg1 $17 Qb6 29. Bb5) 28... Qc7 29. Rg2 {Threatens to win with Qxf6.} Kf8 (29... Ne4 $19 30. Rdg1 Rxc2 31. Rxg7+ Kf8 32. Rg8+ Ke7 33. Rxc8 Nd2+ 34. Ka1 Qxc8 35. Qxc8 (35. Re1+ $2 Ne4 $19) 35... Rxc8) 30. Rdg1 (30. Bb5 $17 {keeps fighting.} Ne4 31. Bd3) 30... Ne4 {[%cal Rc3c2]} 31. Rxg7 {Strongly threatening R1g6.} Rxc2 32. Rg8+ Ke7 33. Rxc8 {[#]} Qxc8 $40 {[%mdl 128] Black attacks.} (33... Nd2+ $1 $19 34. Ka1 Qxc8 35. Qxc8 (35. Re1+ $2 Ne4 $19) 35... Rxc8) 34. Qe5+ $11 Kf8 35. Rd1 {[%mdl 8192]} (35. Qh8+ $11 Ke7 36. Qe5+ {[%mdl 64] Double Attack} Kf8 37. Qh8+ Ke7 38. Qe5+ {[%mdl 64] Double Attack}) 35... Rg2 36. Qh8+ Rg8 37. Qh6+ Ke7 38. Qe3 (38. Re1 $142 Qxh3 39. Qd2) 38... Rg2 $19 39. Rc1 Qf5 {( -> ...Kf8)} 40. Rc7+ Kf8 {Black mates.} 41. Bd7 Nc3+ {[%mdl 64] Discovered Attack (Double check)} 42. Kc1 Qb1# {Weighted Error Value: White=1.10/Black=0.50} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.14"]
[White "Hemam, Moulaye Brahim"]
[Black "Simpson, Michael M"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2046"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,65,68,64,120,118,111,103,139,146,133,80,109,57,62,66,104,100,113,102,152,143,208,226,229,203,215,233,239,213,363,360,357,343,341,331,326,345,351,345,406,422,372,427,358,352,502,508,497,450]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. O-O-O Be7 {outshines the older 8...Bb4.} 9. f3 d6 10. g4 Bd7 {B80: Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack.} (10... Nxd4 $14 11. Qxd4 h6) 11. g5 $16 Nh5 12. f4 g6 {White is better.} 13. Kb1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32] [#]} 14. f5 $146 (14. Be2 $142) ({Predecessor:} 14. Qf2 Ng7 15. Nxc6 Bxc6 16. Bb6 Qb8 17. b4 O-O 18. Rg1 Rc8 19. Bd3 Bd7 20. Ne2 {0-1 (51) Funke,H (1719)-Lochmann,V (1793) Hamburg 2015}) 14... b4 15. fxe6 ({White should try} 15. Nxc6 $16 Qxc6 16. Qd4 $1) 15... fxe6 $14 16. Nxc6 Qxc6 {[#] White leaves nothing to chance now.} 17. Qd4 {[%mdl 64] Double Attack} O-O 18. Qxb4 Rfb8 {[#]} 19. Qd4 ({Much less strong is} 19. Qa3 $6 Rb7 $14) 19... Qb7 (19... Bf8 $16 {keeps fighting.}) 20. b3 $18 Rc8 21. Be2 Ng7 22. h4 Qc7 23. Bd2 Qb8 (23... Qc5 $142 24. Qxc5 Rxc5) 24. h5 {aiming for hxg6.} Qa7 25. Qxa7 Rxa7 26. hxg6 hxg6 27. Rh6 Rac7 28. Kb2 ({Less strong is} 28. Bxa6 Rxc3 29. Bxc8 (29. Rxg6 Rxc2 30. Bxc8 Rxc8 $16) (29. Bxc3 Rxc3 30. Rxg6 Rc5 $14) 29... Rxc8 $16) 28... Bxg5 29. Bxg5 Rxc3 30. Bc4 R3xc4 31. bxc4 Rxc4 (31... Bc6 $142 32. Rxd6 Bxe4) 32. Rxd6 Be8 33. Rxa6 {Weighted Error Value: White=0.07/Black=0.35} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.15"]
[White "Sang, Ricky"]
[Black "Likoko, Elvis"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "1991"]
[BlackElo "1646"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,10,5,0,0,0,7,0,0,-5,4,-10,10,-20,-21,-16,41,27,16,13,19,-1,159,0,0,0,0,0,0,0,0,0,45,0,81,-38,-38,-23,-18,-18,-45,-27,16,-89,-89,-89,-89,-89,-90,-100,-95,-101,-94,-106,-113,-110,-104,-159,-151,-177,-177,-191,-192,-192,-188,-180,-141,-162,-129,-186,-190,-342,-342,-430,-422,-608,-599,-1002,-997]} 1. d4 b6 2. Bf4 Bb7 3. e3 Nf6 4. Nf3 g6 5. Nc3 Bg7 6. Be2 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} d6 7. h3 Nbd7 8. Qd2 {The position is equal.} O-O 9. O-O c5 {[#]} 10. Rad1 $146 ({Predecessor:} 10. Rfd1 cxd4 11. exd4 Rc8 12. Bh6 Re8 13. Bxg7 Kxg7 14. Re1 d5 15. Bd3 a6 16. a4 {1-0 (42) Alarcon Robles,P (1918)-Garcia Mosquera,D (2068) Barcelona 2011}) 10... Rc8 11. Rfe1 a6 12. a4 Qc7 ({Black should try} 12... d5 $11) 13. d5 $14 c4 14. Bf1 Nc5 15. e4 ({Don't go for} 15. Bxc4 $2 Nce4 $19) 15... Qd7 $2 (15... b5 $1 $11) 16. Ra1 $2 ({Not} 16. Bxc4 Ncxe4 $1 17. Nxe4 Rxc4 $11) (16. e5 $16) 16... b5 $11 17. axb5 axb5 {White must now prevent ...b4.} 18. e5 b4 19. exf6 bxc3 20. bxc3 Bxf6 21. Ra7 Na4 {[#]} (21... Qb5 $11) 22. Nd4 (22. Bg5 $1 $16) 22... Ra8 $15 23. Rxa8 Rxa8 24. Bxc4 Qc7 $36 {[%mdl 2048] Black has some pressure.} 25. Bb3 Qxc3 26. Qxc3 (26. Nc6 $1 $11 {remains equal.}) 26... Nxc3 $17 {Black converts the advantage convincingly.} 27. Nc6 Bxc6 28. dxc6 Rc8 29. Bh6 Rxc6 30. Kf1 Ra6 31. g4 {And now g5 would win.} e6 32. Bd2 Na4 33. Bb4 (33. Rb1 $142) 33... Bc3 34. Bxc3 Nxc3 {[%mdl 4096] Endgame KRB-KRN} 35. Re3 Rc6 36. Ke1 d5 37. f3 Nb5 38. Kd2 Nd4 39. Ba4 (39. Rd3 $17 Nb5 40. Ba4) 39... Rc4 $19 40. Ra3 {[#]} (40. Bb3 {was the only defense.} Rb4 41. Rd3) 40... Nxf3+ $1 {[%mdl 512]} 41. Ke3 (41. Rxf3 Rxa4) 41... Ng5 {Black is clearly winning.} 42. h4 (42. Bb5 $142 Rxc2 43. h4) 42... Rxg4 {...Rg3+ is the strong threat.} 43. hxg5 Rg3+ {Weighted Error Value: White=0.45/Black=0.19} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.16"]
[White "Njoroge Martin"]
[Black "Oliveira, Luciano"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1965"]
[BlackElo "2115"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,68,24,14,16,66,68,52,20,20,0,0,-10,-8,-7,40,0,16,0,0,-10,37,37,52,52,55,39,77,81,115,110,101,103,93,13,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 Nd7 3. d4 Ngf6 4. Bg2 e6 5. O-O Be7 6. c4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} b6 7. cxd5 exd5 8. Bf4 {White is slightly better.} Bb7 9. Nbd2 O-O 10. Rc1 {[#]} c5 $146 ({Predecessor:} 10... Rc8 11. Re1 Re8 12. a3 c5 13. e3 Nh5 14. Ne5 Nxf4 15. gxf4 Nf6 16. Nd3 Ba6 {0-1 (57) Carvalho,A-Silva,J Vitoria 2018}) 11. h4 Ne4 12. Be3 Bf6 13. Nxe4 dxe4 14. Ng5 Qe7 15. dxc5 Nxc5 16. b4 Rad8 17. Qc2 Ne6 {[%cal Rf6g5]} 18. Nxe4 Bd4 19. Ng5 Nxg5 20. Bxg5 f6 {[#]} 21. Bxb7 (21. Qc4+ $1 $16 Kh8 22. Bf4) 21... fxg5 $11 {The position is equal.} 22. Be4 gxh4 23. e3 hxg3 24. exd4 gxf2+ 25. Rxf2 Rxf2 26. Kxf2 Qh4+ 27. Kg2 {Threatens to win with Bxh7+!} Qg5+ 28. Kh3 Qh5+ 29. Kg3 {And now Qd2 would win.} Qg5+ 30. Kh3 Qe3+ 31. Kg4 h5+ {[%mdl 64] [#] Decoy} 32. Kxh5 {Black must now prevent Kg4.} Qh3+ 33. Kg5 {Strongly threatening Qc4+.} Qg3+ 34. Kh5 $1 ({Wrong is} 34. Kf5 $2 g6+ 35. Kf6 Qf4+ 36. Bf5 Qh4+ 37. Ke6 Qf4 $19) 34... g6+ {[%mdl 32768] Weighted Error Value: White=0.08/Black=0.09. Loss on time!?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.17"]
[White "Pascoal, Eduardo A"]
[Black "Khalema, Sechaba"]
[Result "1-0"]
[ECO "D60"]
[WhiteElo "2184"]
[BlackElo "1827"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,133,8,37,31,87,63,84,36,42,37,50,50,51,4,67,63,73,75,85,70,93,87,86,95,87,86,129,104,97,114,133,126,141,115,200,206,413,331,345,351,325,327,312,226,322,320,580,578,665,674,631,643,641,566,535,310,290,206,203,22,23,22,29,28,29,28,21,28,39,19,24,14,11,10,47,47,64,69,69,69,69,69,69,69,69,64,64,64,80,57,57,0,133,114,137,116,196,136,226,45,184,191,199,180,477,433,440,367,427,279,263,0,421,401,918,909,29997,29998,29998,29999]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. c4 Bd6 5. Bg5 Be7 6. Nc3 Nbd7 7. e3 O-O 8. Bd3 {8.Bh4 is the recent fashion.} Re8 9. O-O {D60: Queen's Gambit Declined: Classical: Unusual White 7th moves.} Nf8 (9... dxc4 $14 10. Bxc4 a6) 10. Ne5 c6 11. c5 {White is better.} (11. Rc1 {seems wilder.} Ng6 12. f4 dxc4 13. Bc2 c5 14. dxc5 Bxc5 15. Qf3) 11... N6d7 $1 12. Bxe7 Qxe7 13. f4 f6 {[#]} 14. Ng4 $146 ({Predecessor:} 14. Nxd7 Bxd7 15. e4 e5 16. fxe5 fxe5 17. exd5 exd4 18. dxc6 Bxc6 19. Bc4+ Ne6 20. Re1 Bd7 21. Qxd4 {1-0 (55) Ayan,B (1398)-Yilmazel,S Kemer 2012}) 14... f5 ({Better is} 14... b6 $11) 15. Ne5 $14 Nf6 16. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Qc7 17. Rc1 Re7 18. b5 Bd7 19. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} Be8 20. Be2 g6 21. Qb3 Rg7 22. Rb1 Qa5 23. Qb4 Qd8 24. a5 Rc8 (24... cxb5 $16 {keeps fighting.} 25. Bxb5 a6) 25. a6 $18 b6 $2 (25... cxb5 26. Nxb5 (26. Bxb5 b6 $16) 26... Bxb5) 26. cxb6 Qxb6 27. Na4 ({Less strong is} 27. bxc6 Qxb4 28. Rxb4 Bxc6 $16) 27... Qd8 {intending ...cxb5.} 28. b6 ({Weaker is} 28. bxc6 Bxc6 29. Nc5 Ba8 $16) 28... axb6 29. Nxb6 Rcc7 (29... Rb8 $142 30. Bd3 Ra7) 30. Na4 N6d7 $2 (30... Rc8 {might work better.} 31. Nc5 Ra8) 31. Qd6 Rc8 32. Nxc6 Qf6 33. a7 Ra8 34. Rb7 g5 35. Ne5 gxf4 36. exf4 {Black must now prevent Nb6.} Nxe5 37. dxe5 $2 (37. fxe5 $18 Qg5 38. Rxg7+ Qxg7 39. Nc5) 37... Qg6 $11 {[%csl Gg7][%cal Rg6g2]} 38. Rxg7+ Qxg7 {[#]} 39. Qb8 $1 Qxa7+ 40. Qxa7 Rxa7 41. Nc5 Kf7 42. Nb3 Ke7 43. Nd4 Ra4 44. Rd1 Bd7 45. Kf2 Ra3 46. Rb1 Ra4 47. Ke3 Ra3+ 48. Rb3 Ra7 49. g3 Ng6 50. h4 Nf8 51. h5 Rc7 52. Ba6 Be8 53. Be2 ({White should play} 53. h6 $14) 53... Nd7 (53... Bd7 $1 $11 {keeps the balance.}) 54. g4 $16 fxg4 55. Bxg4 Bf7 (55... Nc5 $16 56. Rb6 Bd7) 56. Ra3 $18 Nf8 (56... Rc1 $16 57. h6 Nc5) 57. f5 $2 (57. Ra6 $18) 57... exf5 (57... Nd7 $1 $14) 58. Nxf5+ Ke6 59. Kf4 {And now Ra6+ would win.} Be8 $2 (59... Kd7 {was called for.} 60. Ne3+ Ke7) 60. Ra6+ ({Don't take} 60. Ne3+ Kf7 $18) 60... Kf7 {Now ...Ne6+ and Black clings on.} 61. Rf6+ Kg8 62. Nh6+ Kg7 {[#] If only Black now had time for ...Ng6+....} 63. Nf5+ $2 (63. Kg5 $1) 63... Kg8 64. e6 Rc4+ (64... d4 $142 65. Bf3 Rc5) 65. Kg5 {Ne7+ would kill now.} d4 66. Ne7+ Kg7 67. h6+ {Weighted Error Value: White=0.30/Black=0.43} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.18"]
[White "Bongo Akanga Ndjila, Barthelemy"]
[Black "Fernandes, Avelino"]
[Result "1/2-1/2"]
[ECO "A91"]
[WhiteElo "1803"]
[BlackElo "1887"]
[Annotator "NA RC"]
[PlyCount "90"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} e6 {[%emt 0:00:06]} 2. c4 {[%emt 0:00:06]} f5 {[%emt 0:00:03]} 3. g3 {[%emt 0:00:03]} Nf6 {[%emt 0:00:02]} 4. Bg2 {[%emt 0:00:02]} d5 {[%emt 0:00:02]} 5. Nc3 {[%emt 0:00:02]} c6 {[%emt 0:00:02]} 6. Nh3 {[%emt 0:00:02]} Be7 {[%emt 0:01:00]} 7. b3 {[%emt 0:01:10]} O-O {[%emt 0:00:17]} 8. O-O {[%emt 0:00:07]} Ne4 {[%emt 0:01:30]} 9. Nxe4 {[%emt 0:00:41]} fxe4 {[%emt 0:00:05]} 10. e3 {[%emt 0:00:03]} Nd7 {[%emt 0:00:22]} 11. Nf4 {[%emt 0:00:18]} Nf6 {[%emt 0:00:11]} 12. Nh5 {[%emt 0:00:10]} Bd7 {[%emt 0:01:00]} 13. Bb2 {[%emt 0:00:19]} Qe8 {[%emt 0:00:08]} 14. Nxf6+ {[%emt 0:00:28]} Rxf6 {[%emt 0:00:05]} 15. f3 {[%emt 0:00:03]} exf3 {[%emt 0:00:31]} 16. Bxf3 {[%emt 0:00:08]} Qg6 {[%emt 0:00:06]} 17. Qe2 {[%emt 0:00:09]} Raf8 {[%emt 0:00:09]} 18. e4 {[%emt 0:00:26]} dxe4 {[%emt 0:04:41]} 19. Bxe4 {[%emt 0:00:08]} Rxf1+ {[%emt 0:00:04]} 20. Rxf1 {[%emt 0:00:04]} Rxf1+ {[%emt 0:00:03]} 21. Kxf1 {[%emt 0:00:02]} Qf7+ {[%emt 0:00:11]} 22. Kg2 {[%emt 0:00:05]} Bf6 {[%emt 0:00:03]} 23. Qd3 {[%emt 0:01:20]} g6 {[%emt 0:00:05]} 24. Bc1 {[%emt 0:00:17]} Qe7 {[%emt 0:00:18]} 25. h4 {[%emt 0:00:36]} Be8 {[%emt 0:00:17]} 26. Be3 {[%emt 0:03:23]} Bf7 {[%emt 0:00:50]} 27. d5 {[%emt 0:00:41]} exd5 {[%emt 0:00:12]} 28. cxd5 {[%emt 0:00:02]} cxd5 {[%emt 0:00:03]} 29. Bxd5 {[%emt 0:00:02]} a6 {[%emt 0:00:35]} 30. Bxf7+ {[%emt 0:00:18]} Kxf7 {[%emt 0:00:10]} 31. Bh6 {[%emt 0:01:27]} Ke8 {[%emt 0:01:35]} 32. Qc4 {[%emt 0:00:37]} Kd7 {[%emt 0:00:11]} 33. Qd5+ {[%emt 0:00:12]} Kc8 {[%emt 0:00:08]} 34. Qg8+ {[%emt 0:00:25]} Kd7 {[%emt 0:00:05]} 35. Kf3 {[%emt 0:01:05]} Be5 {[%emt 0:01:04]} 36. Bg5 {[%emt 0:00:55]} Bf6 {[%emt 0:00:15]} 37. Qd5+ {[%emt 0:06:17]} Kc8 $11 {[%emt 0:00:18]} 38. Qg8+ {[%emt 0:00:11]} Kd7 {[%emt 0:00:04]} 39. Qb8 {[%emt 0:00:12]} Kc6 {[%emt 0:00:09]} 40. Qc8+ {[%emt 0:00:03]} Kd5 {[%emt 0:03:06]} 41. Qc4+ {[%emt 0:01:20]} Kd6 {[%emt 0:00:40]} 42. Qb4+ {[%emt 0:00:21]} Ke6 {[%emt 0:00:06]} 43. Qc4+ {[%emt 0:00:56]} Kd7 {[%emt 0:00:06]} 44. Qd5+ {[%emt 0:00:19]} Ke8 {[%emt 0:00:09]} 45. Qg8+ {[%emt 0:00:07]} Kd7 {[%emt 0:00:04]} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.19"]
[White "Meftahi, Houssem"]
[Black "Vermaak, Ashley Christopher"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "2110"]
[BlackElo "1751"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,35,222,75,221,206,389,331,343,335,407,408,407,416,413,387,534,534,581,525]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O b5 10. Bxf6 (10. e5 $1 $18 {and the rest is easy.} Bb7 11. Qg3) 10... Bxf6 {B98: Sicilian Najdorf: 6 Bg5 e6 7 f4 Be7, sidelines.} (10... gxf6 $16 11. Qh5 Nc6) 11. Bxb5+ Nd7 $2 ({Don't play} 11... axb5 12. Ndxb5 Qc6 13. Rxd6 $18) (11... Kf8 {keeps fighting.}) 12. Bxd7+ Qxd7 {White has a decisive advantage.} 13. e5 $1 {[%mdl 64] [#] Discovered Attack} Bb7 14. Qg3 Be7 15. Qxg7 O-O-O 16. Qxf7 {[#]} Rhf8 $146 ({Predecessor:} 16... Bxg2 17. Rhg1 Bh3 18. Rg7 Rhe8 19. Qh5 Bf5 20. Nxf5 exf5 21. exd6 Qa7 22. Rxe7 Rxe7 23. dxe7 Qe3+ 24. Kb1 Rxd1+ 25. Nxd1 Qxe7 26. Qxf5+ Kc7 27. Qe5+ {1-0 (27) Arp,F (2070)-Stahle,S (1735) Rogaska Slatina 2012}) 17. Qxe6 Rxf4 18. Qc4+ {Black did not feel at home in the position after the opening. Accuracy: White = 100%, Black =  8%.} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.20"]
[White "Libe, Sofonea"]
[Black "Ndegwa, Jackson Kamau"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "1509"]
[BlackElo "2001"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,111,42,59,37,39,6,41,45,41,58,64,54,84,81,78,91,158,147,200,17,22,20,35,24,122,25,33,4,0,-91,-91,-91,-88,-91,-91,-97,65,62,44,-29,-27,-97,8,10,9,-151,-77,-277,-263,-268,-239,-318,-289,-707,-703,-988,-975,-948,-964,-943,-614,-1044,-837,-1387,-1168,-2031,-1973,-1660,-1721,-1802,-1796,-2393,-2191,-29980,-29981,-29983,-29983,-29984,-29985,-29985,-29984,-29983,-29984,-29986,-29987,-29990,-29989,-29988,-29989,-29989,-29990,-29990,-29991,-29991,-29992,-29992,-29993,-29993,-29994,-29994,-29995,-29995,-29996,-29997]} 1. c4 e5 2. g3 Bc5 3. Bg2 d6 4. Nc3 f5 5. e3 Nf6 6. Nge2 {A20: English Opening: 1...e5.} O-O {[#]} 7. a3 $146 ({Predecessor:} 7. O-O Nbd7 8. Qc2 Ng4 9. h3 Nh6 10. d4 Bb4 11. a3 Bxc3 12. Nxc3 Qe8 13. Nb5 {0-1 (31) Bukvaj,J (1330)-Hudak,M (1044) Bratislava 2019}) 7... a5 8. O-O {White is slightly better.} Qe8 9. d4 Bb6 10. Rb1 Nc6 11. b4 $1 axb4 12. axb4 Qh5 (12... Bd7 $142) 13. c5 $1 $16 {[%cal Rc5b6]} Ba7 (13... dxc5 $16 {was necessary.} 14. bxc5 Ba5) 14. Nb5 $2 (14. b5 $18 Na5 15. b6 cxb6 16. cxd6) 14... Bb8 $11 15. Nec3 {Black must now prevent Qxh5.} Qxd1 16. Rxd1 Bd7 (16... e4 $11) 17. Bd2 (17. Nd5 $16) 17... e4 18. d5 Ne5 19. Ra1 (19. Bf1 $11) 19... Rxa1 $17 20. Rxa1 Bxb5 21. Nxb5 Nxd5 22. Nd4 {With the idea Nxf5.} Nd3 $2 (22... c6 $17) 23. cxd6 $14 cxd6 {[#]} 24. b5 ({Better is} 24. Nxf5 $1 $14 Nxf2 25. Nd4) 24... g6 25. Ra8 (25. g4 $11 {remains equal.}) 25... Bc7 (25... Nb6 $17 26. Ra2 Nc4) 26. Rxf8+ $11 Kxf8 27. Ne6+ $2 {[#]} ({White has to play} 27. g4 $1 $11) 27... Kf7 ({Black should try} 27... Ke7 $1 {[%cal Re7e6]} 28. Ng5 Nf6) 28. Nxc7 (28. Ng5+ $17 {is a better defense.} Ke7 29. Nxh7) 28... Nxc7 $17 {[%mdl 4096] Endgame KBB-KNN} 29. b6 Nd5 30. Ba5 Ke6 31. f3 $2 (31. g4) 31... Nxe3 $19 32. fxe4 Nxg2 33. exf5+ Kxf5 34. Kxg2 {KB-KN} Ke4 35. Bd2 Nb2 36. Bf4 d5 37. Kf1 Kd3 38. Kf2 d4 39. Kf3 Nc4 40. Bc7 Kc2 41. Kf4 d3 {Black mates.} 42. Kg5 d2 43. Kh6 d1=Q 44. Kxh7 Qh5+ 45. Kg7 g5 46. h4 g4 47. Kf8 Qc5+ 48. Kg7 Nxb6 49. Bxb6 Qxb6 50. h5 Qc7+ 51. Kg6 Qxg3 52. h6 Qh4 53. h7 g3 54. Kg7 g2 55. h8=Q g1=Q+ 56. Kf8 {Black used his chance.  Weighted Error Value: White=0.82/Black=0.24} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.21"]
[White "Singe, Philip Mbawala"]
[Black "Monaheng Motlomelo"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1857"]
[BlackElo "1538"]
[Annotator "NA RC"]
[PlyCount "117"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:07]} e5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:05]} Nc6 {[%emt 0:00:08]} 3. d4 {[%emt 0:00:03]} exd4 {[%emt 0:00:04]} 4. Bc4 {[%emt 0:00:03]} Be7 {[%emt 0:00:06]} 5. c3 {[%emt 0:00:04]} d6 {[%emt 0:00:16]} 6. cxd4 {[%emt 0:00:03]} Nf6 {[%emt 0:00:06]} 7. Nc3 {[%emt 0:00:03]} O-O {[%emt 0:00:06]} 8. O-O {[%emt 0:00:05]} a6 {[%emt 0:00:06]} 9. h3 {[%emt 0:00:02]} Bd7 {[%emt 0:00:09]} 10. Re1 {[%emt 0:00:19]} b5 {[%emt 0:00:07]} 11. Bd3 {[%emt 0:00:08]} Re8 {[%emt 0:00:07]} 12. a3 {[%emt 0:00:04]} Bf8 {[%emt 0:00:05]} 13. Bb1 {[%emt 0:00:08]} g6 {[%emt 0:00:04]} 14. Bg5 {[%emt 0:00:05]} Be7 {[%emt 0:01:05]} 15. Ba2 {[%emt 0:00:33]} Nh5 {[%emt 0:00:37]} 16. Bh6 {[%emt 0:00:37]} Ng7 {[%emt 0:00:20]} 17. Nd5 {[%emt 0:00:24]} Ne6 {[%emt 0:01:06]} 18. Nxe7+ {[%emt 0:00:06]} Nxe7 {[%emt 0:00:08]} 19. d5 {[%emt 0:00:16]} Kh8 {[%emt 0:05:02]} 20. dxe6 {[%emt 0:00:06]} fxe6 {[%emt 0:00:05]} 21. Bxe6 $18 {[%emt 0:00:28]} Ng8 {[%emt 0:00:28]} 22. Bxg8 {[%emt 0:00:15]} Kxg8 {[%emt 0:00:08]} 23. Bg5 {[%emt 0:00:13]} Qc8 {[%emt 0:00:16]} 24. Qd4 {[%emt 0:00:05]} Be6 {[%emt 0:00:17]} 25. Bh6 {[%emt 0:00:07]} Qd7 {[%emt 0:00:06]} 26. Ng5 {[%emt 0:00:03]} c5 {[%emt 0:00:21]} 27. Qc3 {[%emt 0:00:11]} a5 {[%emt 0:00:06]} 28. Nxe6 {[%emt 0:00:03]} Rxe6 {[%emt 0:00:07]} 29. Rad1 {[%emt 0:00:05]} Qe7 {[%emt 0:00:10]} 30. f3 {[%emt 0:00:13]} b4 {[%emt 0:00:05]} 31. Qc4 {[%emt 0:00:05]} Re8 {[%emt 0:00:46]} 32. Re2 {[%emt 0:00:04]} Kh8 {[%emt 0:00:33]} 33. Red2 {[%emt 0:00:08]} Qh4 {[%emt 0:00:19]} 34. Be3 {[%emt 0:00:07]} Qf6 {[%emt 0:00:56]} 35. Bf2 {[%emt 0:00:09]} Rd8 {[%emt 0:01:39]} 36. Bg3 {[%emt 0:00:08]} Qe7 {[%emt 0:00:50]} 37. e5 {[%emt 0:00:13]} bxa3 {[%emt 0:01:38]} 38. bxa3 {[%emt 0:00:05]} Rxe5 {[%emt 0:01:48]} 39. Bxe5+ {[%emt 0:00:05]} Qxe5 {[%emt 0:00:03]} 40. Qe4 {[%emt 0:00:07]} Qf6 {[%emt 0:00:29]} 41. Qc6 {[%emt 0:00:14]} Qc3 {[%emt 0:00:38]} 42. Rxd6 {[%emt 0:00:07]} Qe3+ {[%emt 0:00:13]} 43. Kh1 {[%emt 0:00:05]} Rxd6 {[%emt 0:00:07]} 44. Qxd6 {[%emt 0:00:03]} Kg7 {[%emt 0:00:15]} 45. Qd7+ {[%emt 0:00:04]} Kh6 {[%emt 0:00:04]} 46. Qg4 {[%emt 0:00:04]} Qe2 {[%emt 0:00:48]} 47. Qh4+ {[%emt 0:00:05]} Kg7 {[%emt 0:00:06]} 48. Re1 {[%emt 0:00:02]} Qb2 {[%emt 0:00:36]} 49. Qe7+ {[%emt 0:00:10]} Kh6 {[%emt 0:00:08]} 50. Qf8+ {[%emt 0:00:02]} Kh5 {[%emt 0:00:11]} 51. g4+ {[%emt 0:00:42]} Kh4 {[%emt 0:00:09]} 52. Qh6+ {[%emt 0:00:03]} Kg3 {[%emt 0:00:06]} 53. Rg1+ {[%emt 0:00:02]} Kxf3 {[%emt 0:00:09]} 54. Qf8+ {[%emt 0:00:07]} Ke4 {[%emt 0:00:12]} 55. Qe7+ {[%emt 0:00:11]} Kd5 {[%emt 0:00:05]} 56. Rd1+ {[%emt 0:00:08]} Kc4 {[%emt 0:00:07]} 57. Qe6+ {[%emt 0:00:04]} Kb5 {[%emt 0:00:06]} 58. Qd7+ {[%emt 0:00:06]} Kc4 {[%emt 0:00:07]} 59. Qd3# {[%emt 0:00:03]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.22"]
[White "Mwashe, Philip"]
[Black "Maazouzi, Youssef"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1756"]
[Annotator "NA RC"]
[PlyCount "49"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:04]} 2. c3 {[%emt 0:00:03]} d6 {[%emt 0:00:19]} 3. Nf3 {[%emt 0:00:08]} Nc6 {[%emt 0:00:14]} 4. d4 {[%emt 0:00:03]} cxd4 {[%emt 0:00:03]} 5. cxd4 {[%emt 0:00:01]} e6 {[%emt 0:01:33]} 6. Nc3 {[%emt 0:00:09]} Nf6 {[%emt 0:00:34]} 7. Bd3 {[%emt 0:00:42]} d5 {[%emt 0:02:00]} 8. e5 {[%emt 0:00:16]} Nd7 {[%emt 0:00:16]} 9. O-O {[%emt 0:01:46]} a6 {[%emt 0:00:48]} 10. Be3 {[%emt 0:00:10]} Be7 {[%emt 0:00:25]} 11. Rc1 {[%emt 0:00:18]} O-O {[%emt 0:00:06]} 12. Nd2 {[%emt 0:00:54]} Nb4 {[%emt 0:00:34]} 13. Bb1 {[%emt 0:00:06]} f5 {[%emt 0:02:46]} 14. a3 {[%emt 0:00:08]} Nc6 {[%emt 0:00:05]} 15. Ne2 {[%emt 0:00:06]} Bg5 {[%emt 0:00:30]} 16. Nf3 {[%emt 0:00:21]} Bxe3 {[%emt 0:00:03]} 17. fxe3 {[%emt 0:00:04]} Nb6 {[%emt 0:00:54]} 18. b3 {[%emt 0:00:22]} Bd7 {[%emt 0:00:58]} 19. Qe1 {[%emt 0:00:33]} Kh8 {[%emt 0:02:12]} 20. Qg3 {[%emt 0:00:26]} Rg8 {[%emt 0:01:09]} 21. Ng5 {[%emt 0:00:07]} Qe8 {[%emt 0:01:02]} 22. Nf4 {[%emt 0:01:00]} h6 {[%emt 0:00:48]} 23. Rf3 {[%emt 0:01:43]} Nd8 {[%emt 0:03:12]} 24. Qh4 {[%emt 0:01:04]} Nf7 {[%emt 0:00:39]} 25. Ng6# {[%emt 0:00:06]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "5.23"]
[White "Ebersohn, Raymond Gerhard"]
[Black "Strovsky, Mikhail"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "1726"]
[BlackElo "2164"]
[Annotator "TA"]
[PlyCount "166"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,166,39,35,-9,-8,-6,0,-6,0,0,0,0,0,-6,-4,0,9,-3,2,-9,8,4,5,6,2,5,44,41,35,35,25,15,15,1,11,8,7,4,10,7,9,6,6,8,8,6,13,14,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,9,8,18,12,148,25,147,8,8,0,0,0,8,0,0,0,325,20,21,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-388,-348,-2639,-2659,-12253,-11437,-29967,-29966,-29989,-29990,-29994,-29995]} 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 5. Qxd4 Nc6 6. Qd1 exd5 7. e4 {D32: Tarrasch Defence: Sidelines and lines without g3.} (7. Qxd5 {with more complications.} Qc7 8. Qe4+ Be6 9. Nf3 Nf6 10. Qa4) 7... dxe4 8. Qxd8+ Nxd8 9. Nxe4 {[#] The position is equal.} Nc6 $146 ({Predecessor:} 9... Bb4+ 10. Bd2 Bxd2+ 11. Kxd2 Ke7 12. Nf3 Ne6 13. Bc4 Nf6 14. Rhe1 Rd8+ {½-½ (14) Hochreiner,J (1840)-Hadlich,W (1942) Pinneberg 2012}) 10. Nf3 Be7 11. Bb5 (11. Bc4 {with more complications.} Nf6 12. Nc3 O-O 13. O-O Bg4 14. Be3) 11... Nf6 12. Nc3 O-O 13. O-O Bg4 14. Be2 Bc5 15. h3 Bh5 16. Bg5 Rfe8 17. Rac1 Bb4 18. Bd1 {Threatening Bxf6.} Ne4 19. Nxe4 Rxe4 20. a3 Be7 21. Bxe7 Rxe7 22. Rc3 Rd8 23. g4 Bg6 24. Ba4 Be4 25. Re1 Bxf3 26. Rxe7 Nxe7 27. Rxf3 $11 {[%mdl 4096] Endgame KRB-KRN} Kf8 28. Rc3 Nd5 29. Rd3 Ke7 30. Bb3 Nf4 31. Rxd8 Kxd8 32. Bxf7 Nxh3+ {KB-KN} 33. Kg2 Nf4+ 34. Kf3 Nd3 {Strongly threatening ...Ne5+.} 35. Bg8 h6 36. b3 Ke7 37. Bd5 b6 38. Ke3 Kd6 39. Bg8 (39. Bc4 {keeps more tension.} Ne5 40. Be2 a5 41. f4 Nc6 42. Ke4) 39... Ne5 40. Kf4 Ng6+ 41. Ke4 Ne7 42. Bc4 g6 43. Bf7 a6 (43... g5 $11) 44. f3 (44. f4 $16) 44... a5 {[#]} (44... g5 $1 $11) 45. a4 (45. f4 $1 $16) 45... g5 46. Kd4 Nc6+ 47. Ke4 Ne7 48. Be8 Ke6 49. Bb5 Kf6 $2 {[%mdl 8192] [#]} (49... Kd6 $11 {and Black is okay.}) 50. Bd7 $2 ({White must play} 50. Bc4 $1 $18) 50... Ng6 $1 51. Bc8 Ne7 52. Bb7 Ke6 53. Ba6 Kd6 54. Bc4 Ng6 55. Kf5 Ne5 56. Be2 Nc6 {...Nd4+ is the strong threat.} 57. Kg6 Nd4 58. Bd1 Ke6 59. Kxh6 Kf6 60. Kh5 Ne6 61. Kh6 Nf4 62. Bc2 Ne2 63. Kh7 Kf7 64. Be4 Nd4 65. Bd5+ Kf6 {And now ...Ke5 would win.} 66. Kh6 Ne2 67. Bc4 Nf4 68. Kh7 Ng6 69. Kg8 Ne5 70. Bd5 Nd7 71. Be4 Nc5 $1 {[%cal Rc5b3]} 72. Bc2 Ne6 73. Bd1 Kg6 74. Bc2+ Kf6 75. Be4 Nc5 76. Bd5 Ke5 77. Bc4 Kf4 78. Kg7 $2 {[%mdl 8192]} (78. Bd5 $11 {and White stays safe.}) 78... Kxf3 $19 79. Kg6 $2 (79. Kf6 Kxg4 80. Ke5) 79... Kxg4 80. Be2+ Kf4 81. Bd1 g4 {Black mates.} 82. Kh5 g3 83. Kh4 g2 {Weighted Error Value: White=0.23/Black=0.24} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.1"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Adly, Ahmed"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2422"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,74,-12,13,-3,10,0,33,29,29,35,42,34,41,31,72,0,-1,-9,-11,-19,21,4,25,0,15,3,17,0,34,-19,-24,-56,-15,-18,0,0,0,0,7,0,0,0,0,0,0,-66,-66,-66,-66,-59,-53,-95,-61,-79,-66,-95,-98,-197,-191,-193,-187,-289,-288,-886,-886,-967,-957]} 1. e4 c6 2. Nf3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Kxd1 g6 6. a4 {B10: Caro-Kann: 2 d3 and 2 c4.} Bg7 {[#]} 7. a5 $146 ({Predecessor:} 7. c3 f5 8. Bd3 fxe4 9. Bxe4 Nf6 10. Bc2 Bf5 11. Bxf5 gxf5 12. Nd4 Ne4 13. Nxf5 Nxf2+ {½-½ (60) So,W (2770)-Abdusattorov,N (2627) Chess.com INT 2020}) 7... f5 8. Nbd2 {White is slightly better.} Nf6 9. Bd3 fxe4 10. Nxe4 Nxe4 11. Bxe4 Na6 12. Re1 (12. c3 $16) 12... Nc5 $11 13. a6 Nxe4 14. Rxe4 bxa6 15. Bg5 O-O 16. Kc1 Rb8 17. c3 Rb5 {aiming for ...Rxf3!} 18. h4 (18. Rxe7 $2 {[#]} Rxf3 $1 19. gxf3 Rxg5 $17) ({Much worse is} 18. Bxe7 Re8 $15) 18... e5 19. Raa4 (19. Rc4 $14) 19... Bf5 20. Rec4 Rfb8 21. b4 a5 22. Rxa5 Rxa5 23. bxa5 Rb1+ 24. Kd2 Rb5 25. Rxc6 Rxa5 26. Ke3 Bf8 27. Nd2 (27. Kd2 $11) 27... Rc5 $15 28. Rxc5 Bxc5+ {[%mdl 4096] Endgame KBB-KBN} 29. Ke2 a5 {[%cal Ba7a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 30. Bf6 e4 31. Nb3 Bb6 32. Bd4 {[#]} a4 $1 33. Nc5 (33. Na1 $17 Bd8 34. g3) 33... a3 $19 {Hoping for ...Bxc5.} 34. Nb3 Bd8 35. Kd2 (35. g3 {was worth a try.}) 35... Be6 ({Not} 35... Bxh4 36. c4 $17) 36. Nc5 {[#]} (36. c4 Bxc4 37. Kc3) 36... a2 $1 37. c4 {[#]} (37. Nxe6 Ba5) 37... Bb6 $1 {Weighted Error Value: White=0.44/Black=0.10} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.2"]
[White "Amin, Bassem"]
[Black "Wanyama, Harold"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2693"]
[BlackElo "2312"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,83,-2,0,-4,25,22,25,31,33,39,39,41,54,48,51,63,63,57,83,69,116,92,108,109,107,99,106,90,89,70,73,0,71,81,110,110,702,702,702,702,1078,1051,917,34,38,-238,44,69,66,64,425,252,245,256,244,159,157,0,397,323,304,0,425,416,726,701,29981,12841]} 1. e4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 5. O-O Nc6 6. c3 e5 7. d3 Nge7 8. a3 O-O 9. b4 b6 10. Bb2 {A04: Unusual lines after 1 Nf3 and King's Indian Attack.} h6 11. b5 Na5 12. c4 {White has an edge.} Be6 13. Nfd2 {[#]} a6 $146 ({Predecessor:} 13... Qd7 14. Nc3 Rae8 15. a4 f5 16. f3 h5 17. Nb3 fxe4 18. fxe4 Rxf1+ 19. Bxf1 Bh6 {½-½ (29) Popovic,M (2264)-Atakisi,U (2390) Paracin 2018}) 14. a4 Ra7 15. Nc3 f5 16. exf5 gxf5 17. Qe2 Re8 18. Rfb1 d5 19. cxd5 Nxd5 20. Nxd5 Bxd5 21. Bxd5+ Qxd5 22. Bc3 axb5 23. axb5 e4 {[#]} 24. Qh5 $1 Bxc3 (24... Qf7 $11 {remains equal.} 25. Qxf7+ Rxf7 26. Bxg7 Kxg7 27. dxe4 Rd7) 25. Qxe8+ $16 {[%mdl 64] Double Attack} Kg7 26. dxe4 Qxd2 {[%mdl 8192]} (26... Qd7 $16 27. Qxd7+ Rxd7 28. Rxa5 Bxa5) 27. Rd1 $1 $18 {[%cal Rd1d2]} Qg5 {[#]} 28. Rd8 $1 {[%mdl 512]} Kh7 (28... Qxd8 29. Qxd8) 29. Rad1 Qg6 30. Qf8 $2 ({White must play} 30. R1d7+ $18 Rxd7 31. Qxd7+ {[%mdl 64] Double Attack} Bg7 32. exf5) 30... Qf7 $1 $14 31. Qd6 {[%mdl 8192]} (31. exf5 $14 {keeps the upper hand.} Bd4 32. Qxf7+ Rxf7 33. Rd6) 31... Nc4 $2 ({Inferior is} 31... fxe4 32. Qxb6 Rc7 33. Rf8 $1 $18 (33. R1d6 Nc4 $16)) (31... Nb7 $19 32. Qf4 Nxd8 33. Rxd8 fxe4 34. Qxe4+ Qg6) 32. Qc6 Bd4 {White must now prevent ...f4.} 33. exf5 $40 {[%mdl 128] White attacks.} Qxf5 $2 {[%mdl 8192]} ({Better is} 33... Re7 $14) 34. R8xd4 (34. R1xd4 $142 cxd4 35. Qxc4) 34... cxd4 $18 35. Qxc4 $14 {[%mdl 4096] Endgame KQR-KQR} Rd7 36. Qc6 d3 37. Qxb6 $2 (37. Rd2 $16) 37... d2 $2 {[%mdl 8192]} (37... Qf3 $1 $11 38. Qe6 Qxd1+ 39. Kg2 Ra7) 38. Qc6 Qd3 {[#] intending ...Re7.} 39. Kg2 $2 (39. Qc5 $1 $18) 39... Re7 $2 {[%mdl 8192]} (39... Rf7 $1 $11 {and Black has nothing to worry.}) 40. Qf3 $18 Qc2 (40... Qxf3+ $142 41. Kxf3 Rd7) 41. b6 Re1 {[#]} 42. b7 $1 {[%mdl 512] Weighted Error Value: White=0.65/Black=1.20} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.3"]
[White "Oatlhotse, Providence"]
[Black "Paiva, Donaldo"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2190"]
[BlackElo "2230"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,86,14,35,14,14,13,15,10,30,22,20,0,0,0,4,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,4,2,32,0,0,0,6,6,7,0,0,0,0,0,6,0,0,0,7,7,8,9,13,7,7,7,7,9,10,0,0,0,0,0,4,0,0,0,0]} 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 e6 6. e3 Nge7 7. d4 cxd4 8. Nxd4 Nxd4 9. exd4 d5 10. cxd5 Nxd5 11. Nxd5 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7.} exd5 12. Qa4+ Bd7 13. Qa3 Qe7+ 14. Qxe7+ Kxe7 15. Bxd5 Bxd4 16. O-O Be6 17. Re1 Rhd8 18. Bxe6 fxe6 19. Re2 Rac8 20. Bf4 Rc6 21. Kg2 Bf6 22. Rae1 Rd5 23. h4 a6 24. b3 {[#]} Rdc5 $146 ({Predecessor:} 24... Kf7 25. Re4 Rd4 26. R4e3 Rd5 27. R1e2 Ke7 28. Re4 Kf7 29. Bh6 Rh5 30. Bd2 Rd5 {½-½ (43) Dvoirys,S (2549)-Gubajdullin,A (2504) Moscow 2008}) 25. Re4 Rc2 26. R1e2 (26. a4 {is interesting.} b5 27. axb5 axb5 28. Rd1 R2c3 29. Rb4) 26... Rxe2 {The position is equal.} 27. Rxe2 $11 {[%mdl 4096] Endgame KRB-KRB} Rc3 28. Bd2 Rd3 29. Bb4+ Kd7 30. Rc2 Be5 31. Kf1 Bd6 32. Be1 Rd1 33. Ke2 Ra1 34. Bc3 Rh1 35. Bd4 Rb1 36. Kf3 Rd1 37. Ke4 Re1+ 38. Be3 Rd1 39. Rd2 (39. Bd2 {looks sharper.} Bc5 40. Bf4 Bb6 41. Be5 Re1+ 42. Kf4) 39... Rxd2 40. Bxd2 Bc5 41. Be1 Ke7 42. g4 h5 43. f3 Bd6 {Not much happened in this game. Accuracy: White = 97%, Black = 96%.} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.4"]
[White "Simoes, Joao"]
[Black "Bellahcene, Bilel"]
[Result "0-1"]
[ECO "E16"]
[WhiteElo "2228"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "172"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,172,10,23,26,29,0,0,5,20,19,24,16,20,18,20,20,23,18,20,23,22,23,22,31,23,15,28,7,26,-12,37,25,31,-87,-76,-89,-70,-132,-123,-212,-189,-228,-222,-285,-280,-280,-217,-237,-190,-233,-191,-246,-241,-297,-293,-285,-283,-303,-302,-316,-314,-377,-368,-365,-365,-324,-259,-281,-279,-351,-351,-350,-336,-350,-347,-341,-336,-314,-265,-341,-313,-365,-365,-368,-375,-462,-439,-543,-541,-518,-510,-29972,-1851,-1226,-1219,-29992,-29990,-29991,-29991,-29991,-29992,-29992,-29980,-29980,-29981,-29981,-29978,-29979,-29980,-29980,-29981,-29981,-29981,-29982,-29983,-29984,-29983,-29985,-29986,-29989,-29988,-29989,-29989,-29990,-29990,-29990,-29989,-29989,-29985,-29985,-29986,-29986,-29987,-29987,-29988,-29989,-29990,-29990,-29989,-29989,-29986,-29986,-29986,-29987,-29986,-29988,-29989,-29990,-29991,-29991,-29991,-29992,-29992,-29992,-29993,-29994,-29993,-29997,-29998]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. g3 b6 6. Bg2 Bb7 7. O-O O-O 8. Bg5 Be7 9. Bxf6 {E16: Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} Bxf6 10. Qc2 Nc6 11. Rd1 {[#] The position is equal.} d6 $146 ({Predecessor:} 11... Nb4 12. Qd2 d6 13. a3 Na6 14. Nc3 Re8 15. e4 e5 16. d5 Nc5 17. Qc2 a4 {½-½ (31) Niksic,J (2125)-Remedios,R Vancouver 2000}) 12. Nc3 g6 13. a3 Ne7 14. e4 Bg7 15. Rac1 Qd7 16. b3 h6 17. Re1 g5 18. h3 f5 19. e5 Rae8 20. exd6 cxd6 21. Rcd1 Ng6 22. Rd2 Qf7 23. Nb5 Rd8 24. Rde2 {[#]} (24. a4 $14 {keeps the upper hand.}) 24... e5 $1 $17 {White is on the road to losing.} 25. d5 Ba6 26. Nd2 {[#]} ({Better is} 26. Qd1 $15) 26... e4 $1 27. Nxe4 (27. a4 $17) 27... Bxb5 28. cxb5 {and if Nd2 works, White does fine.} fxe4 29. Bxe4 Ne5 30. Re3 Kh8 31. Qe2 Qd7 32. Kg2 Rf6 33. Rf1 (33. Rc1 {was called for.}) 33... Rdf8 $19 34. Bb1 Qf7 35. Qc2 {[%csl Gb1][%cal Rc2h7]} Qxd5+ 36. Kg1 {[%csl Gb1][%cal Rc2h7]} Qg8 37. Qd1 Rf3 38. Be4 Rxe3 39. fxe3 Rxf1+ 40. Kxf1 Qf8+ 41. Kg2 Nd7 42. b4 axb4 43. axb4 Nf6 44. Bf3 Qe7 45. Qd4 Nd7 46. Qd3 Bf8 47. Bd1 Nf6 48. Bf3 Qe5 49. Qg6 Bg7 50. Qd3 d5 51. Qc2 Ne4 52. Qc8+ Kh7 53. Kf1 (53. Qg4 $19) 53... Nxg3+ (53... Qa1+ $142 54. Kg2 Qb2+ 55. Kh1 Nxg3+ 56. Kg1 Qb1+ 57. Kh2 Nf1+ 58. Kg2 Nxe3+ 59. Kf2 Nf5 60. Qc7 Qd3 61. Qf7 Qe3+ 62. Kg2 Nh4+ 63. Kf1 Nxf3 64. Qf5+ Kg8 65. Qxd5+ Kh8 66. Qd8+ Kh7 67. Qd1 Bd4 68. Qc2+ Kg7 69. Qc7+ Kg6 70. Qd6+ Kh5 71. Qxd4 Nxd4 {[%mdl 64] Discovered Attack} 72. h4 Qe2+ {[%mdl 64] Double Attack} 73. Kg1 Nf3+ {[%mdl 64] Double Attack} 74. Kh1 Qh2#) 54. Kf2 Nf5 55. e4 dxe4 {Black mates.} 56. Bg4 Qg3+ 57. Ke2 Qd3+ {[%mdl 64] Double Attack} 58. Ke1 Qc3+ 59. Qxc3 Bxc3+ 60. Ke2 Nd6 61. Bd7 Bxb4 62. Ke3 Bc5+ 63. Ke2 Kg7 64. Bc6 Kf6 65. Bd7 Ke5 66. Bc6 Nf5 67. Bd7 Ng3+ 68. Ke1 Kd4 69. Bg4 e3 70. Kd1 Bb4 71. Bf3 e2+ 72. Bxe2 Nxe2 73. Kxe2 {[%mdl 4096] Endgame KB-KPP} Ke4 74. Kf2 Kf4 75. Kg2 h5 76. Kf2 Bc5+ 77. Kg2 h4 78. Kh2 Kf3 79. Kh1 Bd6 80. Kg1 Kg3 81. Kh1 Kxh3 82. Kg1 g4 83. Kh1 g3 84. Kg1 Kg4 85. Kg2 h3+ 86. Kh1 g2+ {Weighted Error Value: White=0.46/Black=0.21} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.5"]
[White "Beukes, Dante M"]
[Black "Silva, David"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "2206"]
[BlackElo "2258"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,74,13,12,21,71,10,15,3,31,26,19,-10,0,-5,-5,-10,27,0,0,-15,-12,-15,-13,-37,-21,-20,-30,-21,-22,-28,-27,-39,-31,-31,-31,-31,-32,-34,-15,-6,0,0,0,0,0,0,0,0,26,0,0,0,0,0,0,0,0,0,0,-21,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. g3 Bb4 7. Bg2 O-O {7...d5 is vanishing.} 8. O-O {B45: Sicilian Four Knights.} a6 {8...d6 is the modern continuation.} 9. Bg5 (9. Nxc6 $16 dxc6 10. Qxd8 Rxd8 11. e5) 9... h6 10. Be3 Qc7 {[#]} 11. Nxc6 $146 ({Predecessor:} 11. Nce2 Rd8 12. c3 Bf8 13. b4 Ne5 14. Bf4 d6 15. Qb3 Nc4 16. Nc2 e5 17. Be3 {0-1 (69) Rajnai,I (1982)-Szabo,P (2056) Hungary 2005}) 11... dxc6 12. Qf3 Be7 13. Rfd1 e5 {[#] aiming for ...Bg4.} 14. h3 Nh7 15. a4 a5 16. Kh2 Ng5 17. Qe2 Ne6 18. Nb1 {[%cal Bc3b1,Bb1d2,Bd2f3][%mdl 32]} b6 19. Nd2 Bc5 20. Nf3 Ba6 21. Qe1 Rfd8 22. Qc3 Rxd1 23. Rxd1 Be2 24. Ra1 Bxf3 25. Bxf3 Bd4 26. Bxd4 exd4 27. Qc4 Rd8 28. Rd1 c5 29. Bg2 h5 30. h4 Re8 31. Qd5 g6 {The position is equal.} 32. b3 Nd8 33. f4 Nc6 34. Rf1 Nb4 35. Qc4 Rd8 36. Rf3 Kg7 37. Qe2 Qd7 {[%mdl 32768] Weighted Error Value: White=0.10/Black=0.08. Loss on time!?} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.6"]
[White "Ortega Amarelle, Mariano"]
[Black "Alberto, Manuel"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2463"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,101,25,5,26,18,18,-9,-9,-21,0,0,3,-8,33,40,61,54,29,8,25,18,24,33,78,79,112,119,124,121,150,156,197,119,271,259,268,266,259,187,227,154,163,77,177,165,155,135,247,227,281,271,284,286,287,285,540,525,560,541,526,558,678,672,675,667,706,699,801,701,952,773,782,772,778,443,443,440,436,436,769,769,769,769,763,429,745,679,29985,29986,29989,29990,29990,29991]} 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 {E04: Open Catalan: 5 Nf3.} 7. dxc5 Bxc5 8. Qa4+ (8. Na3 {looks sharper.} Bd7 9. Nxc4 Bc6 10. Rc1 Nbd7 11. O-O) 8... Nbd7 {The position is equal.} 9. O-O O-O 10. Qxc4 a6 {[#]} 11. Qc2 $146 ({Predecessor:} 11. e4 b5 12. Qc2 Bb7 13. e5 Bxf3 14. Bxf3 Nxe5 15. Bg2 Rc8 16. Qb3 Nd3 17. Bg5 Nxf2 18. Rxf2 Bxf2+ 19. Kxf2 Ng4+ 20. Ke2 Qxg5 21. Nd2 Rc2 22. Rd1 Rd8 {0-1 (22) Barbosa,O (2518)-Grover,S (2467) chess.com INT 2017}) 11... h6 12. Nc3 Qe7 13. Rac1 Re8 14. a3 e5 15. Nh4 e4 {Black wants to play ...Qe6.} 16. Nf5 Qe5 {[#]} 17. Bh3 {Bf4 is the strong threat.} Bf8 18. Bf4 Qc5 19. b4 $36 {[%mdl 2048] White has strong initiative.} Qc6 20. Nd4 Qc4 21. Qd2 ({White should try} 21. Qd1 $18) 21... Nb6 $2 {[#]} (21... Ne5 $16 22. Bxc8 Qxc8) 22. Na4 $1 {[%mdl 512]} Qxc1 23. Rxc1 Nxa4 24. Bg2 Bd7 25. Rc7 b5 26. Qc2 (26. f3 $18 {and White stays clearly on top.}) 26... Rad8 (26... Nb6 $16) 27. h4 Nb6 28. Nc6 Bxc6 (28... Ra8 $16 {is a better defense.}) 29. Rxc6 $18 ({Don't take} 29. Qxc6 $6 Nbd5 $16) 29... Nbd5 30. Bc1 ({Much less strong is} 30. Rxa6 Nxf4 31. gxf4 Rc8 $18) 30... Ra8 31. Bb2 a5 32. bxa5 b4 $2 (32... Rxa5 33. Rc8 Rxc8 34. Qxc8 Ra7) 33. Bxf6 {[%mdl 64] Overworked Piece} Nxf6 34. axb4 Bxb4 35. a6 Rad8 36. Bh3 e3 37. f4 Ne4 38. a7 Nxg3 39. Kg2 Nh5 40. Bc8 Nxf4+ 41. Kf3 Ng6 42. Rxg6 Rxc8 43. Rc6 Ra8 44. Rc7 Ba5 (44... Rf8 $142 45. Qd3 (45. Kxe3 Ba5 $16) 45... Rad8) 45. Rb7 Bd8 46. Qc4 Rf8 47. Qd5 Bxh4 (47... Bb6 $142 48. Rxb6 Rxa7) 48. Kg4 Bg5 {[#]} 49. Rxf7 $1 {[%mdl 512] White mates.} Kh8 (49... Rxf7 50. Qxa8+) 50. Rxf8+ Rxf8 51. a8=Q {Weighted Error Value: White=0.34/Black=0.58} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.7"]
[White "Joelson, Ricardo"]
[Black "Kayonde, Andrew"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "2017"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,126,8,8,27,12,22,14,27,0,0,13,18,-70,33,24,43,0,0,0,0,0,0,-39,-21,-31,-6,-17,-2,-31,0,-45,-6,-6,-10,-12,-12,-10,0,0,0,0,0,-21,-21,-47,-4,-5,-13,-31,-26,-29,-18,-29,-15,-19,0,-14,-14,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-470,-429,-294,-70,-71,-78,-95,0,-8,-8,-1540,-404,-1457,-1033,-599,0,0,-8,-1213,-1213,-2239,-1670,-29976,-29977,-29980,-29981,-29981,-29982,-29982,-29983,-29985,-29984,-29986,-29987,-29987,-29984]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Bd3 O-O 8. O-O Nd7 {[%cal Bb8d7,Bd7f8,Bf8e6][%mdl 32] B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6.} 9. h3 Re8 10. c4 {10.c3 might become the main line.} Nf8 {The position is equal.} 11. b3 Ne6 {[#]} 12. Re1 $146 ({Predecessor:} 12. Be3 Nf4 13. Bxf4 Bxf4 14. Bc2 Be6 15. Qd3 g6 16. Rad1 Qa5 17. Qe4 Bc7 18. Qh4 Qxa2 {½-½ (88) Dourerassou,J (2477)-De Borba,G (2279) chess.com INT 2020}) 12... Bd7 13. Qc2 {[#]} (13. Be3 $11) 13... g6 (13... Nxd4 $1 $15 14. Rxe8+ (14. Bxh7+ $2 Kh8 $19) 14... Qxe8 15. Nxd4 Qe1+ 16. Bf1 Qe5) 14. Bd2 Nf4 15. Bxf4 (15. Rxe8+ {keeps more tension.} Qxe8 16. Bf1 Bf5 17. Qb2 Qd8 18. Re1) 15... Bxf4 16. Rxe8+ Qxe8 17. Re1 Qf8 18. g3 Bc7 19. Bf1 a5 20. Bg2 Qb4 21. Qd2 Bd6 22. d5 (22. c5 $5 {[%cal Rd2b4]} Bf8 23. Qf4 $11) 22... a4 (22... cxd5 {feels hotter.} 23. Qxd5 Bc6 24. Qd1 a4 25. Re2 axb3 26. axb3 Bxf3 27. Bxf3 Ra3) 23. dxc6 $1 Bxc6 24. Rd1 axb3 (24... Bc5 {with more complications.} 25. Qxb4 Bxb4 26. Nh4 Bc5 27. Bxc6 bxc6 28. Nf3 Kf8) 25. axb3 ({Not} 25. Qxd6 $2 Qxd6 26. Rxd6 bxa2 $19) 25... Qxd2 ({Much weaker is} 25... Qxb3 $6 26. Nd4 $16) (25... Bf8 {seems wilder.} 26. Qxb4 Bxb4 27. Nh4 Bc5 28. Bxc6 bxc6 29. Nf3 Kf8) 26. Nxd2 Bb4 27. Bxc6 bxc6 $11 {[%mdl 4096] Endgame KRB-KRN} 28. Nf1 Ra2 29. Rd3 Be1 30. Rf3 f5 31. Ne3 Rb2 32. g4 Rxb3 33. gxf5 Bd2 34. fxg6 fxg6 35. Kg2 Bxe3 36. fxe3 {KR-KR} Rc3 37. Rf4 $1 Rxe3 38. Rf6 c5 39. Rc6 Re5 40. Rc7 Rf5 41. Kg3 h6 42. Kg2 Kf8 43. Kg3 Ke8 44. h4 h5 45. Rg7 Rf1 {White must now prevent ...Rc1.} 46. Kh3 $2 {[%mdl 8192]} (46. Rc7 $11 {and White stays safe.}) 46... Rh1+ $1 $19 47. Kg3 Rg1+ $2 (47... Rc1 $19 {aiming for ...Rc3+.} 48. Kf4 Rxc4+ 49. Ke5 Rxh4 50. Rxg6 c4) 48. Kf4 $1 $15 Rg4+ 49. Ke5 {[#]} Rxc4 (49... Kf8 $1 $17 {[%cal Rf8g7]} 50. Rh7 Kg8) 50. Rxg6 $11 Rxh4 51. Kf5 $2 {[%mdl 8192]} (51. Rc6 $11) 51... c4 (51... Kd7 $142 52. Ke5 Rh1) 52. Ra6 (52. Ke6 $142 Re4+ 53. Kd5) 52... Rd4 53. Ke5 {[#]} Rg4 $2 ({Black should try} 53... Rd3 $1 $19 {And now ...c3 would win.} 54. Ke4 Rh3) 54. Rh6 Rh4 {Strongly threatening ...c3.} (54... Kd7 $5 55. Kd5 $8 h4 56. Rh7+ Ke8 $11) 55. Rc6 $2 {[%mdl 8192]} (55. Ke6 $11 Kf8 56. Kf6 Rf4+ 57. Ke5) 55... Kd7 $19 56. Ra6 c3 {[%cal Bc4c3,Bc3c2][%mdl 32]} 57. Rd6+ Kc7 {Black mates.} 58. Rd3 Rc4 59. Rd1 c2 60. Rc1 Kc6 61. Kf5 h4 62. Kg5 h3 63. Kf5 h2 {Weighted Error Value: White=0.73/Black=0.49} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.8"]
[White "Zaibi, Amir"]
[Black "Hemam, Moulaye Brahim"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2381"]
[BlackElo "2046"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,58,45,0,0,0,0,-91,-89,-115,-83,-97,-87,-115,-120,-120,-63,-118,-85,-103,-31,-10,-52,-83,-79,-102,-119,-220,-216,-671,-687,-669,-669,-768,-760,-912,-898,-939,-945,-1001,-982,-1132,-1141,-1068,-1077]} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. f3 O-O 6. Qd2 e5 7. Nge2 exd4 8. Nxd4 d5 9. O-O-O (9. e5 $5 {[%cal Re5f6]}) 9... c5 {C41: Philidor Defence.} 10. Nb3 d4 11. Nxc5 {[#]} (11. Bg5 $11 {remains equal.}) 11... Nfd7 $1 $17 {Black is better.} 12. Bxd4 Bxd4 13. Qxd4 {Strongly threatening Nd5.} Qg5+ {[%mdl 64] Double Attack} 14. Kb1 {[%cal Rc5d7]} Qxc5 15. Qd2 {[#]} Nf6 $146 ({Better is} 15... Nb6 $17 16. Qd6 Qxd6 17. Rxd6 Be6) ({Predecessor:} 15... Nc6 16. h4 Nde5 17. h5 Be6 18. Qh6 Qe7 19. f4 Ng4 20. Qg5 Qxg5 21. fxg5 Nf2 {0-1 (21) Mroziak,M (2369)-Shevchenko,K (2592) Tornelo INT 2020}) 16. h4 ({White should play} 16. Qf4 $15 Nh5 17. Qd6 Qxd6 18. Rxd6) 16... Nc6 17. h5 a5 (17... Nxh5 $6 18. Nd5 $11) (17... Be6 $17 18. hxg6 fxg6) 18. Qh6 {[#] Hoping for Nd5.} Be6 ({Don't blunder} 18... Nxh5 $2 19. Rd5 $18) 19. g4 {With the idea hxg6.} Rfd8 20. Bd3 {hxg6 is the strong threat.} Qf8 21. hxg6 (21. Qe3 $17) 21... Qxh6 $19 ({But not} 21... fxg6 22. Qg5 $17) 22. gxf7+ $2 (22. Rxh6 hxg6 23. Rh2) 22... Kg7 {Black is clearly winning.} 23. Rxh6 Kxh6 24. f4 Nxg4 25. Rg1 Nf2 26. Be2 Nd4 27. f5 Bxf7 28. e5 Nxe2 29. Nxe2 Rd1+ {Weighted Error Value: White=0.81/Black=0.08} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.9"]
[White "Amdouni, Zoubaier"]
[Black "Gohil, Mehul"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2229"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,93,36,35,52,36,46,43,17,19,18,41,33,51,39,34,35,44,32,39,36,30,27,20,30,42,39,131,-36,39,5,3,5,4,10,10,9,163,163,166,156,156,161,201,199,208,200,240,235,281,248,368,347,367,356,377,397,376,369,356,343,828,814,775,710,723,634,860,849,3875,3031,1808,1493,29976,29977,29977,29978,29984,29982,29989,29990,29990,29991,29991,29989,29989,29990]} 1. e4 e6 2. d4 d5 3. Bd3 c5 4. exd5 Qxd5 5. Nc3 Qd8 6. dxc5 {C01: French: Exchange Variation.} Bxc5 7. Qg4 Nf6 (7... Qf6 $2 8. Ne4 $18) 8. Qh4 {White is slightly better.} Nc6 9. Bg5 {[#]} Bd7 $146 ({Predecessor:} 9... Be7 10. O-O-O h6 11. Nf3 Qa5 12. Bd2 O-O 13. Qa4 Qxa4 14. Nxa4 Nb4 15. Bc4 {½-½ (15) Solberg,J (2270)-De Strycker,N (2097) Helsingor 2015}) 10. O-O-O Qa5 11. Bxf6 gxf6 12. Ne4 O-O-O 13. Nxc5 Qxc5 14. Qxf6 Rhg8 15. Nh3 Rxg2 16. Be4 (16. Qxf7 Rg4 $14) 16... Rg4 17. Rhe1 Qh5 (17... e5 $14) 18. f3 $2 {[#]} Rg2 (18... Rxe4 $1 $15 19. Rxe4 Qxh3) 19. Nf4 (19. Bxc6 {is more complex.} bxc6 20. Nf4 Qg5 21. Qd4 Rxh2 22. Re5) 19... Qg5 20. Qxg5 Rxg5 21. h4 $36 {[%mdl 2048] White has the initiative.} Ra5 22. a3 f5 $2 {This move loses the game for Black.} (22... Ra4 $11 {and Black is okay.}) 23. Bxc6 $18 Bxc6 24. Rxd8+ ({Not} 24. Rxe6 Rxd1+ 25. Kxd1 Ra4 $11) 24... Kxd8 25. Nxe6+ {[%mdl 4096] Endgame KRB-KRN} Kd7 26. Nd4 Rd5 27. c3 Ba4 28. Rg1 Kc8 29. Rg8+ Rd8 (29... Kc7 $142 30. Rg5 Rd6) 30. Rxd8+ Kxd8 31. Nxf5 {KB-KN} Kd7 32. Kd2 Ke6 33. Nd4+ Ke5 34. Ke3 h5 $2 (34... Be8 35. f4+ Kf6) 35. c4 Be8 36. f4+ Kd6 37. Ke4 Kc5 38. b3 {[%cal Bb2b3,Bb3b4,Bb4b5,Bb5b6][%mdl 32]} a5 39. Ke5 a4 40. Ne6+ Kb6 41. b4 {White mates.} Kc6 42. f5 b5 43. cxb5+ {[%mdl 64] [#] Overworked Piece} Kxb5 44. Nc7+ {[%mdl 64] Double Attack} Kc4 45. Nxe8 Kb3 46. b5 Kxa3 47. b6 {Weighted Error Value: White=0.14/Black=0.41} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.10"]
[White "Bouzidi, Ahmed"]
[Black "Mosutha, Thuso"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2163"]
[BlackElo "2036"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,89,27,13,31,37,31,13,0,-1,-8,-19,0,-7,28,24,5,-53,-58,-60,-56,-58,-42,-52,0,25,23,0,0,0,10,7,0,0,0,0,0,0,0,-2,-2,-2,-4,-5,8,12,123,122,127,10,19,14,50,50,50,49,64,57,61,39,59,29,105,112,126,124,285,224,227,230,230,229,337,336,323,318]} 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Bc4 Nb6 5. Bb3 c4 6. Bc2 Nc6 7. Nf3 d5 {7...d6 is the modern continuation.} 8. exd6 Qxd6 9. O-O Bg4 {B22: Sicilian: 2 c3.} 10. Re1 O-O-O 11. Na3 Qf6 {The position is equal.} 12. b3 Nd5 {[#] aiming for ...Nxc3!} 13. Qe2 ({Don't go for} 13. bxc4 $2 Nxc3 14. dxc3 Rxd1 $19) 13... Nf4 14. Qe4 {[#]} ({Avoid the trap} 14. Qxc4 $2 Bxf3 15. Re3 Bd5 $19) 14... Bxf3 $146 ({Predecessor:} 14... e6 15. b4 Bxf3 16. Qxf3 Ne5 17. Qe4 Ned3 18. Qxc4+ Kb8 19. Bxd3 Nxd3 20. Rf1 Bxb4 {0-1 (36) Hallaeva,B (2133)-Gu,X (2295) Sharjah 2018}) 15. Qxf3 Nd3 16. Rd1 ({White should play} 16. Qxf6 $11 exf6 17. Bxd3 cxd3 18. Nc4) 16... Qxf3 $15 17. gxf3 cxb3 18. axb3 e6 19. Nc4 Bc5 ({Better is} 19... Kb8 $15) 20. Bxd3 $11 Rxd3 21. b4 Bb6 22. b5 Nd8 23. Nxb6+ axb6 24. Kf1 Rxf3 25. d3 Kc7 26. Ra8 f6 27. c4 Nf7 28. Rxh8 Nxh8 {[%mdl 4096] Endgame KRB-KRN} 29. Be3 e5 30. Ra1 {Threatens to win with Ra8.} Ng6 {[#]} (30... Kb8 $11 {remains equal.}) 31. Ra8 $1 $16 {[%mdl 1024] White has strong compensation.} Nf4 32. Rg8 (32. Rf8 $16) 32... Ne6 $11 33. Re8 Kd7 (33... Kd6 {is interesting.} 34. Ke2 Kd7 35. Rb8 Kc7 36. Kxf3 Kxb8 37. Bxb6 Kc8) 34. Rh8 Rh3 35. Kg2 Rh5 36. Bxb6 Nf4+ 37. Kg1 Rh3 38. Be3 (38. Rd8+ {looks sharper.} Ke7 39. Rb8 Rxd3 40. Rxb7+ Rd7 41. Rxd7+ Kxd7 42. Kf1) 38... Nxd3 (38... Ne6 $1 $11) 39. Rb8 $16 Kc7 40. Rg8 Nb2 $2 {This costs Black the game.} (40... f5 $16) 41. Rxg7+ Kc8 42. b6 Rh4 43. c5 f5 (43... Nc4 {is a better defense.} 44. Rc7+ Kb8) 44. Rc7+ $18 Kb8 45. Rf7 {[%cal Rf7f8] Weighted Error Value: White=0.11/Black=0.25} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.11"]
[White "Likoko, Elvis"]
[Black "Seddaoui, Yamine"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1646"]
[BlackElo "2127"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,102,46,49,60,55,55,58,60,66,7,12,14,37,25,51,-16,-2,-87,-79,-68,-38,-110,-33,-68,-87,-103,-70,-81,-47,-108,-77,-85,-85,-86,-70,-99,-83,-73,-48,-61,-21,-28,-37,-37,-20,-23,0,-17,0,0,37,27,31,33,47,26,33,0,-3,-18,0,-28,-25,-21,-18,-81,-54,-49,-50,-58,-35,-77,-20,-50,0,0,0,-76,0,-42,-19,-11,-11,-20,-8,-56,-62,-69,-68,-107,-94,-680,-672,-682,-659]} 1. e4 d6 2. d4 Nf6 3. f3 Nbd7 4. c4 c5 5. Ne2 g6 6. Be3 {B07: Pirc Defence: Miscellaneous Systems.} Bg7 7. Qd2 a6 8. Nbc3 {White is slightly better.} Qa5 9. Ng3 {[#]} (9. dxc5 $14 Nxc5 10. Rb1) 9... cxd4 $146 ({Predecessor:} 9... h5 10. Be2 cxd4 11. Bxd4 Ne5 12. Rd1 Bd7 13. Nd5 Qxd2+ 14. Rxd2 Nxd5 15. cxd5 O-O {0-1 (51) Gunnarsson,A (2240)-Christiansen,L (2575) Reykjavik 1998}) 10. Bxd4 Ne5 11. Be2 Be6 12. b3 (12. b4 $1 $14 Qa3 13. Nd5 Bxd5 14. exd5 (14. cxd5 Rc8 $11)) 12... Nc6 13. Bxf6 (13. Bg1 $1 $11) 13... Bxf6 $17 14. Rc1 h5 15. h4 (15. f4 $15) 15... Qb6 (15... Bd4 $17 16. Bd3 Qc5) 16. Bd3 Bd4 17. Nd1 Bg7 18. Ne2 Ne5 19. Bb1 ({White should try} 19. Nf4 $15) 19... Bh6 20. f4 Ng4 21. g3 O-O 22. Qd4 Qa5+ (22... Qc7 {is interesting.} 23. O-O Bg7 24. Qd2 b5 25. f5 Bd7) 23. Qd2 Qc7 (23... Qc5 {keeps more tension.} 24. Nec3 Rfe8 25. Kf1 Rac8 26. Kg2 Bg7) 24. Nf2 Nxf2 25. Kxf2 Bg4 26. Nc3 e5 27. Nd5 Qc5+ 28. Qe3 exf4 29. gxf4 Be6 (29... Qxe3+ {looks sharper.} 30. Kxe3 Kh8 31. Bd3 Be6 32. Kf3 Rac8) 30. Qxc5 dxc5 31. Kg3 Rad8 32. Rcd1 Bg7 33. f5 {Ne7+ is the strong threat.} Be5+ 34. Kf3 Bd7 35. Nb6 Bc6 36. Nd5 Kg7 37. Rd2 (37. Ne7 $11 {remains equal.}) 37... Bd4 38. Rg2 Kh6 39. Rg5 b5 40. Bd3 Rde8 (40... gxf5 $17 {With the idea ...f6.} 41. Nf4 fxe4+ 42. Bxe4 Bxe4+ 43. Kxe4 Rfe8+ 44. Kf3 Re3+ 45. Kg2 Re5) 41. Rh2 Bxd5 42. cxd5 Bf6 43. Rgg2 (43. Rhg2 $11) 43... Bd4 (43... gxf5 $17 44. exf5 Re1) 44. fxg6 (44. Rg5 {seems wilder.}) 44... fxg6+ 45. Ke2 c4 $36 {[%mdl 2048] Black has some pressure.} 46. bxc4 bxc4 47. Bxc4 (47. Bc2 {feels hotter.} Rf6 48. Rh3 Kg7 49. Ra3 Rb6 50. Rag3) 47... Rxe4+ 48. Kd3 Ref4 {Threatens to win with ...Be5.} 49. Bxa6 Bf6 50. Bc4 $2 {[%mdl 8192] [#]} (50. Rd2 $17) 50... Rd4+ $19 51. Kc3 Rc8 {Weighted Error Value: White=0.41/Black=0.17} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.12"]
[White "Miguel, Sergio"]
[Black "Hamzaoui, Khalil"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2377"]
[BlackElo "1883"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,85,0,-17,-18,-18,2,-3,12,-4,21,31,61,60,56,45,54,49,70,50,85,82,263,268,261,241,225,140,139,130,120,127,132,81,79,69,83,82,215,214,209,209,216,214,212,212,211,211,198,192,222,211,220,154,255,275,278,266,258,269,238,239,278,270,269,272,275,268,255,236,284,280,877,858]} 1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 O-O 6. Be2 cxd4 7. exd4 d5 8. c5 Ne4 {E61: King's Indian: Early deviations for White, including Smyslov System.} 9. O-O Nxc3 10. bxc3 Nc6 {The position is equal.} 11. Bf4 Qa5 12. Qb3 {[#]} e6 $146 ({Predecessor:} 12... e5 13. Be3 e4 14. Nd2 Qd8 15. f3 Na5 16. Qc2 exf3 17. Nxf3 Bf5 18. Bd3 Bxd3 19. Qxd3 {0-1 (36) Hassan,S-Cilia Vincenti,D (2129) Turin 2006}) 13. Rfe1 e5 14. dxe5 Qxc5 15. Rad1 Be6 16. Qxb7 {Hoping for Be3.} Rab8 17. Qa6 {Black must now prevent Be3.} ({Much worse is} 17. Be3 Qxc3 18. Qa6 Nxe5 $11) 17... Rb2 $2 (17... Rfc8 $16 {was called for.}) 18. Be3 $1 $18 {[%cal Re3c5]} d4 19. cxd4 Qd5 20. Rc1 Nb4 21. Qa3 ({Much less strong is} 21. Qxa7 $6 Nc2 $14) 21... Qxa2 22. Qxa2 Rxa2 23. Ra1 ({Better is} 23. Bc4 Bxc4 24. Rxc4) 23... a5 $16 24. Rxa2 Bxa2 25. Ra1 {Bd2 is the strong threat.} Rc8 {[#]} (25... Ra8 $16 {is a better defense.}) 26. Bd2 $1 $18 Rc2 {[#]} 27. Bd1 $1 {[%cal Rd1c2]} Rb2 28. Bc3 Rb1 29. Rxb1 Bxb1 30. Nd2 Ba2 31. Bb3 a4 32. Bxa4 ({Less strong is} 32. Bxb4 axb3 33. Bc3 Bh6 $11) 32... Nd5 33. Ba5 Nf4 (33... f6 $16 {was worth a try.} 34. Nf3 Kf7) 34. Bb3 Bxb3 35. Nxb3 {[%mdl 4096] Endgame KBN-KBN} f6 36. g3 Nd5 37. f4 g5 38. exf6 Bxf6 39. fxg5 Bxg5 40. Kf2 Kf7 41. Kf3 Ke6 42. Nc5+ Kd6 $2 (42... Ke7 43. g4 Kf7) 43. Ne4+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.07/Black=0.29} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.13"]
[White "Oliveira, Luciano"]
[Black "Pascoal, Eduardo A"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2115"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,100,11,9,4,6,-21,0,0,0,-5,0,-13,-6,-6,0,-1,-2,-11,-6,-6,-2,-1,-8,-27,12,0,8,8,13,7,17,7,21,0,0,-18,-20,-14,14,-8,-4,-6,-4,-7,0,-5,0,0,0,0,0,-10,-10,-10,-6,-13,-16,-257,-243,-225,-194,-249,-249,-243,-244,-259,-251,-545,-534,-517,-492,-795,-768,-624,0,-348,0,-679,-552,-1083,-1094,-969,-795,-740,-542,-1050,-1003,-854,-832,-12849,-8370,-29993,-29994]} 1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. Nbd2 e6 5. h3 d5 6. e3 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} Bd6 7. Be5 {[#]} Nbd7 $146 ({Predecessor:} 7... Nc6 8. Bxf6 Qxf6 9. c4 O-O 10. cxd5 exd5 11. Be2 Rfe8 12. O-O Rad8 13. Qa4 a5 {1-0 (57) Unkelbach,M (1947)-Myagkov,K (1845) Forchheim 2013}) 8. Bxd6 {The position is equal.} cxd6 9. Bd3 O-O 10. c4 dxc4 11. Nxc4 Qe7 12. O-O Rfc8 13. Rc1 Rc7 14. Ncd2 Rxc1 15. Qxc1 Rc8 16. Qd1 d5 17. a3 Qd6 18. Qb1 Qc7 19. Nb3 Ne4 20. Rc1 Qd8 21. Rxc8 Qxc8 22. Qc2 (22. Nc1 {is more complex.} Ndf6 23. Ne2 Ba6 24. Bxa6 Qxa6 25. Qc2) 22... Qxc2 23. Bxc2 Ba6 24. Ne1 Kf8 (24... Nd6 {with more complications.} 25. f3 Nb8 26. Nd2 g5 27. g4 Nc6) 25. Bd3 Bxd3 26. Nxd3 $11 {[%mdl 4096] Endgame KNN-KNN} Ke7 27. Kf1 Kd6 28. Ke2 f6 29. f3 Ng5 30. Nf2 e5 31. Kd3 Ne6 32. g3 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 33. e4 $2 {White is on the road to losing.} (33. h4 $11 {and White is okay.}) 33... a4 $19 34. Nd2 {intending dxe5+.} Nxd4 35. f4 (35. Kc3 $142) 35... Nc5+ 36. Ke3 Ndb3 37. fxe5+ fxe5 {[#] White must now prevent ...Nxd2.} ({Don't take} 37... Kxe5 38. Nf3+ Kd6 39. exd5 $17) 38. exd5 $2 (38. Nf1) 38... Nxd2 39. Kxd2 Kxd5 {Hoping for ...Ne4+. KN-KN} 40. Ke3 (40. Nd1 $142 Kc4 41. b4 axb3 42. Ne3+ Kd4 43. Nf5+ Ke4 44. Ne3) 40... Kc4 41. Ng4 Kd5 42. Nf2 $1 Kc4 $2 (42... h6 $19 43. h4 Kc4) 43. Kd2 $2 {[%mdl 8192]} (43. Ng4 $11) 43... Kb3 44. Kc1 e4 {[#] Strongly threatening ...e3.} 45. Nd1 Nd3+ 46. Kb1 Ne5 47. Ne3 Nc4 48. Nf5 Nxb2 49. Nxg7 e3 {( -> ...e2)} 50. Kc1 Kc3 {Weighted Error Value: White=0.93/Black=0.37} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.14"]
[White "Fernandes, Avelino"]
[Black "Abdelazeez, Mohamed Abdalla"]
[Result "1/2-1/2"]
[ECO "C23"]
[WhiteElo "1887"]
[BlackElo "2214"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,126,-83,-75,-78,6,-15,0,-37,-32,-40,-10,-12,0,-25,-31,-36,-27,-102,-32,-35,-27,-23,-32,-80,-58,-132,-85,-159,-132,-133,-74,-111,-81,-77,-60,-103,-94,-93,-27,-22,-31,-25,-16,-29,0,0,0,0,0,-29,0,0,0,0,0,0,0,0,0,0,0,0,21,0,0,0,0,0,0,-25,0,0,0,0,0,0,0,0,0,0,0,0,0,-10,0,0,0,0,0,-8,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Bc4 Bc5 3. Qf3 Nf6 4. c3 Nc6 5. b4 Bb6 $1 6. a4 {Strongly threatening a5. C23: Bishop's Opening: 2...Bc5.} a6 (6... a5 $1 $17 7. b5 Ne7) 7. d3 h6 {[#]} (7... a5 {keeps more tension.} 8. b5 Ne7 9. h3 d5 10. exd5 Nfxd5 11. Ne2 O-O) 8. Be3 $146 ({Predecessor:} 8. Ne2 d6 9. h3 Ne7 10. Ng3 d5 11. exd5 Nexd5 12. O-O O-O 13. Bxd5 Nxd5 14. Ra2 {0-1 (32) Pastewski,B-Kalinowski,J Poland 2011}) 8... Bxe3 9. fxe3 d6 10. Qg3 O-O 11. Nf3 d5 12. exd5 Nxd5 13. Qf2 (13. Nxe5 $11 {remains equal.} Nxe5 14. Qxe5) 13... Be6 (13... Nb6 $17 14. Qe2 Nxc4 15. dxc4 e4) 14. O-O $15 Qd6 15. Nfd2 f5 16. Nb3 {White wants to play Nc5.} b6 17. Qd2 (17. N3d2 $15) 17... Rad8 18. b5 ({White should play} 18. Na3) 18... axb5 $17 19. axb5 {[#]} Nce7 (19... f4 $142 $1 20. exf4 (20. bxc6 Nxe3 {[%mdl 64] Double Attack} 21. Qe2 Nxf1 $17) 20... Nxf4) 20. Na3 {[#]} f4 $1 21. Nc2 fxe3 22. Rxf8+ Rxf8 23. Nxe3 Nxe3 (23... Nf4 $17) 24. Qxe3 $11 Bxc4 25. dxc4 Nf5 26. Qe4 Qf6 {White must now prevent ...Nd4!} 27. Rf1 Qe6 28. Nd2 Nd6 29. Rxf8+ Kxf8 30. Qc6 e4 31. Qxc7 e3 32. Nf3 e2 33. Kf2 Nxc4 34. Qd8+ Kf7 35. Qd3 Nd6 (35... e1=B+ {feels hotter.} 36. Nxe1 Ne5 37. Qg3 Kg8 38. Nc2 Qf5+) 36. Qxe2 (36. Ke1 {looks sharper.} Ke7 37. Nd4 Qe4 38. Qxe2 Kf6 39. Kd2) 36... Ne4+ 37. Kg1 Nxc3 38. Qd3 Nd5 39. h3 Nf4 40. Qd2 {The position is equal.} g5 41. Kh2 Qd5 42. Qc2 {aiming for Qc7+.} Qd6 43. Qf5+ (43. Qh7+ {is more complex.} Kf8 44. Qh8+ Ke7 45. Qg7+ Ke8 46. g3) 43... Kg7 44. Qe5+ Qxe5 45. Nxe5 {[%mdl 4096] Endgame KN-KN} Nd5 46. h4 Kf6 47. Ng4+ Kg6 48. hxg5 Kxg5 49. Ne5 h5 50. Nc4 Kg4 51. Ne5+ Kf5 52. Nc4 Ke4 53. Kh3 Kd4 54. Nxb6 Nxb6 {KN-KPP} 55. Kh4 Kc5 56. Kxh5 Kxb5 {KN-KP} 57. g4 Kc6 58. Kg6 Kd6 59. Kf7 Nd7 60. g5 Ne5+ 61. Kf6 Kd5 62. Kf5 Kd6 63. g6 Nxg6 {And White is the lucky defender.  Weighted Error Value: White=0.11/Black=0.11} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.15"]
[White "Meftahi, Houssem"]
[Black "Kamara, Ansumana"]
[Result "1-0"]
[ECO "B95"]
[WhiteElo "2110"]
[BlackElo "1899"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,72,0,0,-22,-12,-39,-46,-32,11,0,62,39,52,5,12,0,19,-44,118,114,419,385,397,356,402,331,304,239,477,210,228,225,187,164,132,52,31,42,77,0,-70,-302,-115,-293,1157,1130,29965,777,29964,29959,5261,5189,29996,29997,29997,29998,29998,29999,29999]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 Qc7 7. Bb3 e6 8. Bg5 Be7 9. f4 {B95: Sicilian Najdorf: 6 Bg5 e6, unusual White 7th moves.} (9. a3 {looks sharper.} O-O 10. O-O b5 11. Qf3 Nc6 12. Rad1) 9... h6 10. Bxf6 (10. Bh4 {keeps more tension.} O-O 11. Qf3 b5 12. a3 Bb7 13. f5) 10... Bxf6 11. Qd2 {Black is slightly better.} O-O 12. O-O-O {[#]} Be7 $146 ({Better is} 12... b5 $11) ({Predecessor:} 12... Rd8 13. Nde2 b5 14. g4 Bb7 15. Ng3 Qc5 16. Nce2 a5 17. c3 Nc6 18. Nh5 Bh4 19. Bc2 {0-1 (29) Rakic,S (1729)-Omorjan,D (2281) Kragujevac 2017}) 13. Kb1 Nc6 14. g4 Nxd4 15. Qxd4 b5 16. Rhg1 (16. f5 $11) 16... e5 $2 (16... d5 $15 {stays ahead.} 17. Rge1 (17. exd5 Bc5 $17) 17... Bf6) 17. Qd2 {Hoping for g5.} Bb7 $2 {[%mdl 8192]} (17... exf4 $16 {is a better chance.} 18. Nd5 Qd8) 18. g5 $18 hxg5 19. fxg5 g6 20. h4 Kg7 21. h5 gxh5 $2 (21... Rh8 22. Nd5 Bxd5 23. Qxd5 Raf8) 22. Qe2 (22. Rdf1 $142 d5 23. Nxd5) 22... Rh8 23. Qf3 {[%csl Gb3][%cal Rf3f7][%mdl 1024] White has strong compensation.} Raf8 24. a3 Qd8 25. Rh1 ({White should play} 25. Nd5 $16) 25... h4 $14 26. Rdg1 Bxg5 27. Rxg5+ Qxg5 $15 28. Qf2 $2 (28. Ne2 $1 $15) 28... Qf4 $2 (28... Bc8 $19 {has better winning chances. aiming for ...h3.} 29. Rg1 Bg4) 29. Rg1+ $2 (29. Qg1+ $17 Kh7 30. Qe1) 29... Kf6 $4 {[%mdl 8192]} (29... Kh7 $19 30. Qe2 Rhg8) 30. Qb6 $1 $18 {[%csl LRb7,LRd6][%cal Rb6d6]} Bxe4 31. Qxd6+ Kf5 {[#]} 32. Bxf7 $1 {[%csl Gd6,Gg1][%cal Rf7g6][%mdl 512]} Bxc2+ 33. Ka1 {[%csl Gd6,Gg1][%cal Rf7g6]} Qh6 34. Bg6+ {White mates.} Kf4 35. Qd2+ {[%mdl 64] Double Attack} Kf3 36. Qe2+ {[%mdl 64] [#] Double Attack} Kf4 37. Qf2# {Weighted Error Value: White=0.51/Black=0.87} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.16"]
[White "Simpson, Michael M"]
[Black "Calicoca, Wilton Inacio"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "1995"]
[BlackElo "2122"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,72,10,3,4,14,8,4,0,0,-2,18,0,42,3,0,4,94,97,47,66,106,-21,87,0,0,0,0,0,66,53,152,137,152,146,354,341,349,339,412,411,401,400,839,632,547,444,324,0,0,0,104,0,0,-7,-16,-12833,-12834,-5824,-6060,-5728,-4810,-12840,-12841,-29994,-29995]} 1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Bg2 Nf6 5. d3 e6 6. Nge2 {B24: Closed Sicilian: 3 g3 sidelines.} d6 7. O-O Be7 8. h3 {The position is equal.} Qc7 9. f4 b6 10. g4 Bb7 11. Be3 O-O-O {[#]} 12. f5 $146 {Hoping for fxe6.} ({Predecessor:} 12. Qc1 d5 13. e5 d4 14. exf6 Bxf6 15. g5 Be7 16. Bf2 dxc3 17. bxc3 h6 18. Bg3 {0-1 (35) Boucek,V (2032)-Hulin,P (2073) Ricany 2009}) 12... h6 (12... Nd7 $11 {keeps the balance.}) 13. fxe6 fxe6 14. Nf4 Qd7 15. a4 (15. Na4 $16 Kc7 16. Ng6) 15... Nd4 (15... g5 $11 16. Ng6 Rhg8 17. Nxe7+ Qxe7) 16. Bxd4 (16. Ng6 $16) 16... cxd4 $11 17. Nce2 e5 18. Ng6 $36 {[%mdl 2048] Black is under pressure.} Rhg8 (18... Rhe8 $11) 19. c3 Qe8 (19... dxc3 $14 20. Qb3 (20. bxc3 d5 $14) (20. Nxc3 Rde8 $11) 20... c2) 20. Nxe7+ $16 Qxe7 21. cxd4 d5 $2 (21... Kb8 $16 22. Qb3 Ka7) 22. dxe5 $18 Qxe5 {[%cal Rd5e4]} 23. d4 Qe7 24. e5 Ne4 25. Qb3 Qg5 (25... Qd7 $142 26. Qxb6 Kb8) 26. Rac1+ Kb8 27. Bxe4 dxe4 28. Qxb6 $2 ({White should try} 28. Rf5 $18 Qh4 29. Rcf1) 28... Qe3+ $11 29. Rf2 {White threatens Rc7 and mate.} Rc8 (29... Rdf8 $1 $11 {remains equal.} 30. Rcf1 Ka8) 30. Rxc8+ (30. Rc3 $16 Rxc3 31. bxc3) 30... Rxc8 31. Kg2 {Strongly threatening Nc3.} Qd2 {aiming for ...e3+.} (31... Qd3 $5 32. Nf4 $8 Qd1 $11) 32. Nc3 $2 {[%mdl 8192]} (32. Kh2 $11) 32... e3+ $19 {[%mdl 64] [#] Pin, Discovered Attack} 33. Qxb7+ Kxb7 34. Rxd2 exd2 35. e6 {[#]} Rxc3 $1 {[%mdl 512]} 36. e7 (36. bxc3 d1=Q) 36... Re3 {Weighted Error Value: White=1.05/Black=0.49} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.17"]
[White "Cambando, Jose"]
[Black "Bongo Akanga Ndjila, Barthelemy"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2128"]
[BlackElo "1803"]
[Annotator "RC"]
[PlyCount "81"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. Nf3 {[%emt 0:01:00]} d5 {[%emt 0:03:50]} 2. g3 {[%emt 0:00:07]} c6 {[%emt 0:00:12]} 3. Bg2 {[%emt 0:00:04]} Nf6 {[%emt 0:00:03]} 4. O-O {[%emt 0:00:03]} Bf5 {[%emt 0:00:04]} 5. d3 {[%emt 0:00:03]} e6 {[%emt 0:00:12]} 6. Nbd2 {[%emt 0:00:07]} Be7 {[%emt 0:01:36]} 7. c4 {[%emt 0:00:13]} h6 {[%emt 0:00:06]} 8. h3 {[%emt 0:00:08]} O-O {[%emt 0:00:04]} 9. a3 {[%emt 0:00:06]} a5 {[%emt 0:00:05]} 10. b3 {[%emt 0:00:04]} Bh7 {[%emt 0:00:09]} 11. Bb2 {[%emt 0:00:04]} Nbd7 {[%emt 0:00:11]} 12. Qc2 {[%emt 0:00:14]} a4 {[%emt 0:01:37]} 13. b4 {[%emt 0:00:06]} dxc4 {[%emt 0:00:29]} 14. Nxc4 {[%emt 0:00:09]} Nd5 {[%emt 0:02:08]} 15. Rac1 {[%emt 0:00:25]} Bf6 {[%emt 0:00:02]} 16. Na5 {[%emt 0:01:44]} Bxb2 {[%emt 0:00:32]} 17. Qxb2 {[%emt 0:00:05]} Qb8 {[%emt 0:02:02]} 18. Rc2 {[%emt 0:00:11]} Rc8 {[%emt 0:00:13]} 19. Rfc1 {[%emt 0:00:04]} N7b6 {[%emt 0:00:08]} 20. e4 {[%emt 0:00:10]} Nc7 {[%emt 0:00:17]} 21. Qd4 {[%emt 0:00:42]} Qa7 {[%emt 0:00:12]} 22. Nxc6 {[%emt 0:00:49]} bxc6 {[%emt 0:00:02]} 23. Rxc6 {[%emt 0:00:04]} Rab8 {[%emt 0:02:28]} 24. R1c5 {[%emt 0:08:07]} Bg6 {[%emt 0:03:10]} 25. Qc3 {[%emt 0:00:39]} Nba8 {[%emt 0:01:23]} 26. Ne5 {[%emt 0:00:18]} Kh7 {[%emt 0:00:27]} 27. d4 {[%emt 0:00:32]} Nb5 {[%emt 0:01:15]} 28. Rxb5 {[%emt 0:00:05]} Rxb5 {[%emt 0:02:11]} 29. Rxc8 {[%emt 0:00:08]} Rb7 {[%emt 0:01:32]} 30. Nxg6 {[%emt 0:00:25]} Kxg6 {[%emt 0:00:25]} 31. e5 {[%emt 0:00:04]} Rc7 {[%emt 0:00:58]} 32. Qd3+ {[%emt 0:00:12]} f5 {[%emt 0:00:11]} 33. exf6+ {[%emt 0:00:06]} Kxf6 {[%emt 0:00:02]} 34. Rxa8 {[%emt 0:00:04]} Rc1+ {[%emt 0:00:14]} 35. Kh2 {[%emt 0:00:04]} Qc7 {[%emt 0:00:43]} 36. Qf3+ {[%emt 0:00:34]} Kg6 {[%emt 0:00:10]} 37. Qe4+ {[%emt 0:00:03]} Kf6 {[%emt 0:00:08]} 38. Rf8+ {[%emt 0:00:15]} Ke7 {[%emt 0:00:06]} 39. Qa8 {[%emt 0:00:07]} Ra1 {[%emt 0:01:34]} 40. Qe8+ {[%emt 0:00:31]} Kd6 {[%emt 0:00:03]} 41. Rf7 {[%emt 0:00:05]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.18"]
[White "Ndegwa, Jackson Kamau"]
[Black "Singe, Philip Mbawala"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2001"]
[BlackElo "1857"]
[Annotator "RC"]
[PlyCount "121"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:35]} 2. Nf3 {[%emt 0:00:05]} Nf6 {[%emt 0:01:45]} 3. Nxe5 {[%emt 0:00:07]} d6 {[%emt 0:00:04]} 4. Nf3 {[%emt 0:00:08]} Nxe4 {[%emt 0:00:04]} 5. d4 {[%emt 0:00:02]} d5 {[%emt 0:00:03]} 6. Bd3 {[%emt 0:00:04]} Nc6 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:03]} Be7 {[%emt 0:00:07]} 8. c3 {[%emt 0:00:05]} O-O {[%emt 0:00:08]} 9. Bf4 {[%emt 0:00:06]} Bg4 {[%emt 0:00:04]} 10. h3 {[%emt 0:00:02]} Bh5 {[%emt 0:00:03]} 11. Nbd2 {[%emt 0:00:07]} Nxd2 {[%emt 0:00:05]} 12. Qxd2 {[%emt 0:00:08]} Bg6 {[%emt 0:00:04]} 13. Rfe1 {[%emt 0:00:07]} Bd6 {[%emt 0:00:03]} 14. Ne5 {[%emt 0:00:05]} Re8 {[%emt 0:00:22]} 15. Nxg6 {[%emt 0:00:08]} hxg6 {[%emt 0:00:03]} 16. Bb5 {[%emt 0:00:09]} Bxf4 {[%emt 0:00:06]} 17. Qxf4 {[%emt 0:00:05]} Qd6 {[%emt 0:00:05]} 18. Qxd6 {[%emt 0:00:05]} cxd6 {[%emt 0:00:02]} 19. f3 {[%emt 0:00:10]} Kf8 {[%emt 0:00:03]} 20. Ba4 {[%emt 0:00:07]} Rxe1+ {[%emt 0:00:12]} 21. Rxe1 {[%emt 0:00:10]} Re8 {[%emt 0:00:02]} 22. Rxe8+ {[%emt 0:00:06]} Kxe8 {[%emt 0:00:03]} 23. Kf2 {[%emt 0:00:05]} Kd7 {[%emt 0:00:06]} 24. g4 {[%emt 0:00:05]} g5 {[%emt 0:00:04]} 25. Kg3 {[%emt 0:00:03]} Ke6 {[%emt 0:00:03]} 26. Bxc6 {[%emt 0:00:04]} bxc6 {[%emt 0:00:03]} 27. f4 {[%emt 0:00:02]} f6 {[%emt 0:00:08]} 28. f5+ {[%emt 0:00:06]} Kf7 {[%emt 0:00:07]} 29. h4 {[%emt 0:00:41]} Ke7 {[%emt 0:00:05]} 30. hxg5 {[%emt 0:00:24]} fxg5 {[%emt 0:00:02]} 31. Kf3 {[%emt 0:00:03]} Kd7 {[%emt 0:00:03]} 32. Ke3 {[%emt 0:00:02]} Kc7 {[%emt 0:00:01]} 33. Kd3 {[%emt 0:00:02]} Kb6 {[%emt 0:00:02]} 34. c4 {[%emt 0:00:03]} Ka5 {[%emt 0:00:11]} 35. cxd5 {[%emt 0:00:05]} cxd5 {[%emt 0:00:01]} 36. Kc3 {[%emt 0:00:01]} Kb5 {[%emt 0:00:03]} 37. Kb3 {[%emt 0:00:09]} a5 {[%emt 0:00:02]} 38. a4+ {[%emt 0:00:05]} Ka6 {[%emt 0:00:15]} 39. Ka3 {[%emt 0:00:06]} Kb6 {[%emt 0:00:06]} 40. b4 {[%emt 0:00:02]} Ka6 {[%emt 0:00:06]} 41. bxa5 {[%emt 0:00:02]} Kxa5 {[%emt 0:00:03]} 42. Kb3 {[%emt 0:00:02]} Ka6 {[%emt 0:00:02]} 43. Kb4 {[%emt 0:00:02]} Kb6 {[%emt 0:00:02]} 44. a5+ {[%emt 0:00:02]} Ka6 {[%emt 0:00:03]} 45. Ka4 {[%emt 0:00:01]} Ka7 {[%emt 0:00:04]} 46. Kb5 {[%emt 0:00:02]} Kb7 {[%emt 0:00:02]} 47. a6+ {[%emt 0:00:01]} Kc7 {[%emt 0:00:06]} 48. a7 {[%emt 0:00:04]} Kb7 {[%emt 0:00:01]} 49. a8=Q+ {[%emt 0:00:05]} Kxa8 {[%emt 0:00:02]} 50. Kc6 {[%emt 0:00:02]} Kb8 {[%emt 0:00:02]} 51. Kxd6 {[%emt 0:00:02]} Kc8 {[%emt 0:00:02]} 52. Kxd5 {[%emt 0:00:03]} Kd7 {[%emt 0:00:02]} 53. Ke5 {[%emt 0:00:01]} Ke7 {[%emt 0:00:02]} 54. d5 {[%emt 0:00:02]} Kd7 {[%emt 0:00:02]} 55. d6 {[%emt 0:00:02]} Kd8 {[%emt 0:00:03]} 56. Ke6 {[%emt 0:00:02]} Ke8 {[%emt 0:00:01]} 57. d7+ {[%emt 0:00:04]} Kd8 {[%emt 0:00:02]} 58. Kf7 {[%emt 0:00:01]} Kxd7 {[%emt 0:00:02]} 59. Kxg7 {[%emt 0:00:03]} Ke7 {[%emt 0:00:01]} 60. Kg6 {[%emt 0:00:01]} Kf8 {[%emt 0:00:03]} 61. Kxg5 {[%emt 0:00:02]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.19"]
[White "Strovsky, Mikhail"]
[Black "Mwashe, Philip"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2164"]
[BlackElo "1756"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,101,39,41,83,37,50,12,23,12,20,11,23,0,51,55,60,0,0,0,-1,-13,-8,-16,-12,-19,-15,-33,-32,-33,-33,-37,-40,-52,-49,-41,0,0,0,0,0,0,0,0,0,-16,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 g6 7. d4 cxd4 8. cxd4 Bg7 9. Nc3 a6 {[#] B52: Sicilian: Moscow Variation with 3...Bd7.} 10. b3 $146 ({Predecessor:} 10. Be3 b5 11. Rc1 Nf6 12. h3 O-O 13. a3 Rfb8 14. b4 Rb7 15. d5 Nd8 16. Nd4 Rc8 17. f3 {0-1 (70) Derevshikov,N (1754)-Eramian,G (1987) Sochi 2019}) 10... Nf6 11. Bb2 O-O 12. Re1 Rad8 13. Qe2 Nh5 14. Qe3 Qg4 (14... f5 $11) 15. h3 $14 Qf4 16. Nd5 ({Better is} 16. Qe2 $14) 16... Qxe3 $11 17. Nxe3 Nf6 18. Nd5 e6 19. Nxf6+ Bxf6 20. Rad1 d5 21. e5 Be7 22. Re2 Rc8 23. Rc1 Nb4 24. Ba3 Rxc1+ 25. Bxc1 Nd3 26. Rc2 {The position is equal.} Nxc1 27. Rxc1 {[%mdl 4096] Endgame KRB-KRN} Rb8 28. Kf1 Kf8 29. Ke2 Ke8 30. Kd3 Kd8 31. g3 Rc8 (31... h6 {is interesting.} 32. Nh2 Kd7 33. h4 Rg8 34. Ng4 h5) 32. Rxc8+ Kxc8 {KB-KN} 33. Kc3 a5 34. a4 b6 35. Kd3 h6 36. Ke3 Bb4 37. Ng1 Kd7 38. Ne2 Ke7 39. f3 Kf8 40. Kd3 Ke8 41. Nc3 Kd7 42. Nb5 h5 43. g4 h4 44. Ke3 g5 45. f4 Be7 46. f5 Bb4 47. fxe6+ fxe6 48. Kd3 Kc6 49. Na7+ Kb7 50. Nb5 Kc6 51. Na7+ {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.20"]
[White "Njoroge Martin"]
[Black "Sang, Ricky"]
[Result "1-0"]
[ECO "B91"]
[WhiteElo "1965"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,59,50,56,141,145,196,199,195,177,219,191,191,180,197,110,266,258,252,241,286,284,324,301,297,297,450,321,304,283,337,337,367,365,517,372,377,375,381,374,427,414,416,387,411,402,472,462]} 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. g3 b5 7. Bg2 Bb7 8. O-O Qc7 {B91: Sicilian Najdorf: 6 g3.} (8... Nbd7 $14) 9. Nd5 $16 Bxd5 (9... Nxd5 $16 {is a better defense.} 10. exd5 Nd7) 10. exd5 $18 g6 {[#] White is clearly better.} 11. a4 $146 {[%cal Ba2a4,Ba4a5][%mdl 32]} ({Predecessor:} 11. Re1 Bg7 12. Qe2 O-O 13. Qxe7 Qc5 14. Nb3 Qxc2 15. Qxd6 Nbd7 16. Nd4 Qc4 17. Nc6 {1-0 (80) Lipski,T (1959)-Wojciechowski,A (1869) Lublin 2013}) 11... b4 12. a5 Bg7 13. Be3 O-O 14. Nc6 ({White should try} 14. Ra4 $18) 14... Nxc6 $2 {Black cannot hold the game after this.} (14... Qb7 $16) 15. Bb6 ({And not} 15. dxc6 d5 $11) 15... Qc8 {[#] Hoping for ...Ne5.} 16. dxc6 d5 17. Bxd5 Nxd5 18. Qxd5 Bxb2 19. Rad1 e6 (19... b3 $142 20. cxb3 Ba3) 20. Qd7 Bf6 21. Rd3 Kg7 22. Rb1 Bc3 23. c7 h5 (23... Qxd7 $142 24. Rxd7 g5) 24. Qxc8 Raxc8 25. Rd8 Be5 26. Rd7 Bc3 27. Rbd1 Bf6 28. Kf1 Rfe8 29. Ke2 e5 30. R1d6 {Weighted Error Value: White=0.19/Black=0.41} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.21"]
[White "Khalema, Sechaba"]
[Black "Vermaak, Ashley Christopher"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1827"]
[BlackElo "1751"]
[Annotator "NA RC"]
[PlyCount "74"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:06]} 2. c4 {[%emt 0:00:03]} c6 {[%emt 0:00:03]} 3. cxd5 {[%emt 0:00:19]} cxd5 {[%emt 0:00:04]} 4. Nc3 {[%emt 0:00:05]} Nf6 {[%emt 0:00:04]} 5. Bf4 {[%emt 0:00:03]} Nc6 {[%emt 0:00:04]} 6. e3 {[%emt 0:00:02]} a6 {[%emt 0:00:07]} 7. Bd3 {[%emt 0:00:04]} Bg4 {[%emt 0:00:48]} 8. Nge2 {[%emt 0:00:05]} e6 {[%emt 0:00:08]} 9. h3 {[%emt 0:00:05]} Bh5 {[%emt 0:00:04]} 10. O-O {[%emt 0:00:03]} Bd6 {[%emt 0:00:15]} 11. Qd2 {[%emt 0:00:06]} Bg6 {[%emt 0:00:28]} 12. Rac1 {[%emt 0:00:04]} Rc8 {[%emt 0:00:55]} 13. Rfd1 {[%emt 0:00:10]} O-O {[%emt 0:00:35]} 14. Kh1 {[%emt 0:04:31]} Ne4 {[%emt 0:02:44]} 15. Bxe4 {[%emt 0:00:07]} Bxe4 {[%emt 0:00:09]} 16. Nxe4 {[%emt 0:00:04]} dxe4 {[%emt 0:00:03]} 17. a3 {[%emt 0:00:17]} Bxf4 {[%emt 0:03:08]} 18. Nxf4 {[%emt 0:00:13]} g5 {[%emt 0:02:32]} 19. Ne2 {[%emt 0:00:09]} Ne7 {[%emt 0:03:28]} 20. Rxc8 {[%emt 0:00:34]} Qxc8 {[%emt 0:00:05]} 21. Rc1 {[%emt 0:00:02]} Qd7 {[%emt 0:00:12]} 22. Rc5 {[%emt 0:00:03]} Nd5 {[%emt 0:00:29]} 23. Qc2 {[%emt 0:00:04]} f5 {[%emt 0:00:23]} 24. Kg1 {[%emt 0:00:29]} h5 {[%emt 0:00:27]} 25. g4 {[%emt 0:01:28]} hxg4 {[%emt 0:03:52]} 26. hxg4 {[%emt 0:00:04]} Qf7 {[%emt 0:00:29]} 27. gxf5 {[%emt 0:00:04]} Qxf5 {[%emt 0:00:06]} 28. Ng3 {[%emt 0:00:05]} Qf3 {[%emt 0:01:02]} 29. Nxe4 {[%emt 0:00:10]} Rf5 {[%emt 0:04:42]} 30. Ng3 {[%emt 0:00:47]} Nxe3 {[%emt 0:00:48]} 31. Rc8+ {[%emt 0:00:05]} Kh7 {[%emt 0:00:40]} 32. Rc7+ {[%emt 0:00:15]} Kg6 {[%emt 0:00:38]} 33. Qe4 {[%emt 0:00:19]} Qxf2+ {[%emt 0:00:13]} 34. Kh1 {[%emt 0:00:08]} Qe1+ {[%emt 0:00:25]} 35. Kh2 {[%emt 0:00:04]} Qf2+ {[%emt 0:00:12]} 36. Kh1 {[%emt 0:00:11]} Qe1+ {[%emt 0:00:09]} 37. Kh2 {[%emt 0:00:07]} Nf1+ {[%emt 0:00:04]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.22"]
[White "El Kouri, Abdallah lamine"]
[Black "Monaheng Motlomelo"]
[Result "0-1"]
[ECO "D00"]
[BlackElo "1538"]
[Annotator "NA RC"]
[PlyCount "118"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:06]} 2. e4 {[%emt 0:00:08]} dxe4 {[%emt 0:00:06]} 3. f3 {[%emt 0:00:03]} exf3 {[%emt 0:00:07]} 4. Nxf3 {[%emt 0:00:08]} Nf6 {[%emt 0:00:05]} 5. Bc4 {[%emt 0:00:06]} e6 {[%emt 0:00:08]} 6. Nc3 {[%emt 0:00:05]} Be7 {[%emt 0:00:03]} 7. O-O {[%emt 0:00:04]} O-O {[%emt 0:00:04]} 8. Be3 {[%emt 0:00:05]} Nbd7 {[%emt 0:00:16]} 9. Qe2 {[%emt 0:00:10]} Nb6 {[%emt 0:00:05]} 10. Bd3 {[%emt 0:00:10]} Bd7 {[%emt 0:00:14]} 11. Ne5 {[%emt 0:00:04]} Be8 {[%emt 0:01:19]} 12. Qf3 {[%emt 0:00:41]} Nbd5 {[%emt 0:00:20]} 13. Bd2 {[%emt 0:00:31]} c6 {[%emt 0:00:16]} 14. Qh3 {[%emt 0:00:12]} g6 {[%emt 0:00:53]} 15. Bh6 {[%emt 0:00:14]} Nb4 {[%emt 0:00:13]} 16. Bxf8 {[%emt 0:01:06]} Bxf8 {[%emt 0:00:06]} 17. Ne4 {[%emt 0:00:15]} Nxe4 {[%emt 0:00:29]} 18. Ng4 {[%emt 0:00:55]} Qxd4+ {[%emt 0:00:29]} 19. Kh1 {[%emt 0:00:29]} Nxd3 {[%emt 0:00:17]} 20. cxd3 {[%emt 0:00:14]} Ng5 {[%emt 0:01:55]} 21. Qh4 {[%emt 0:01:14]} Qc5 {[%emt 0:01:20]} 22. d4 {[%emt 0:01:43]} Qe7 {[%emt 0:01:01]} 23. Nf6+ {[%emt 0:00:06]} Kh8 {[%emt 0:01:17]} 24. Qxg5 {[%emt 0:00:09]} Bg7 {[%emt 0:00:06]} 25. Qh4 {[%emt 0:00:40]} Bxf6 {[%emt 0:00:17]} 26. Rxf6 {[%emt 0:00:09]} Rd8 {[%emt 0:01:21]} 27. Raf1 {[%emt 0:00:14]} Rd5 {[%emt 0:00:11]} 28. Qe4 {[%emt 0:01:03]} Kg8 {[%emt 0:00:27]} 29. h4 {[%emt 0:00:10]} Qb4 {[%emt 0:00:22]} 30. R6f4 {[%emt 0:01:51]} Qxb2 {[%emt 0:01:46]} 31. h5 {[%emt 0:00:25]} Rxh5+ {[%emt 0:00:07]} 32. Rh4 {[%emt 0:00:35]} Qb5 {[%emt 0:01:21]} 33. Kg1 {[%emt 0:01:35]} Rd5 {[%emt 0:01:51]} 34. Qf4 {[%emt 0:00:29]} Rf5 {[%emt 0:00:10]} 35. Qh6 {[%emt 0:00:19]} Qxf1+ {[%emt 0:00:17]} 36. Kh2 {[%emt 0:00:24]} Rh5 {[%emt 0:00:05]} 37. Rxh5 {[%emt 0:00:18]} gxh5 {[%emt 0:00:10]} 38. Qg5+ {[%emt 0:00:29]} Kf8 {[%emt 0:00:07]} 39. Qxh5 {[%emt 0:00:08]} Qf4+ {[%emt 0:00:08]} 40. Kh1 {[%emt 0:00:08]} Qxd4 {[%emt 0:00:12]} 41. Qxh7 {[%emt 0:00:20]} c5 {[%emt 0:00:06]} 42. Qh6+ {[%emt 0:00:07]} Ke7 {[%emt 0:00:07]} 43. Qg5+ {[%emt 0:00:32]} f6 {[%emt 0:00:08]} 44. Qg7+ {[%emt 0:00:06]} Bf7 {[%emt 0:00:04]} 45. a3 {[%emt 0:00:27]} c4 {[%emt 0:00:06]} 46. Qg3 {[%emt 0:00:07]} e5 {[%emt 0:00:28]} 47. Qe1 {[%emt 0:00:19]} c3 {[%emt 0:00:05]} 48. Qe2 {[%emt 0:00:31]} Qd2 {[%emt 0:00:07]} 49. Qb5 {[%emt 0:00:28]} c2 {[%emt 0:00:08]} 50. Qxb7+ {[%emt 0:00:04]} Kf8 {[%emt 0:00:06]} 51. Qc8+ {[%emt 0:00:57]} Be8 {[%emt 0:00:20]} 52. Qh3 {[%emt 0:00:26]} c1=Q+ {[%emt 0:00:36]} 53. Kh2 {[%emt 0:00:06]} Qf4+ {[%emt 0:00:12]} 54. g3 {[%emt 0:00:38]} Qcd2+ {[%emt 0:05:02]} 55. Qg2 {[%emt 0:00:31]} Qh6+ {[%emt 0:00:07]} 56. Kg1 {[%emt 0:00:13]} Qe1+ {[%emt 0:00:07]} 57. Qf1 {[%emt 0:00:15]} Qhe3+ {[%emt 0:00:04]} 58. Kg2 {[%emt 0:00:07]} Q3xg3+ {[%emt 0:00:11]} 59. Kh1 {[%emt 0:01:21]} Bc6# {[%emt 0:00:08]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "6.23"]
[White "Maazouzi, Youssef"]
[Black "Libe, Sofonea"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "1509"]
[Annotator "NA RC"]
[PlyCount "84"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:06]} 2. Nf3 {[%emt 0:00:02]} Nc6 {[%emt 0:00:09]} 3. Bb5 {[%emt 0:00:32]} Qc7 {[%emt 0:00:16]} 4. O-O {[%emt 0:00:13]} e6 {[%emt 0:00:04]} 5. c3 {[%emt 0:01:22]} Nf6 {[%emt 0:00:04]} 6. Re1 {[%emt 0:00:49]} Be7 {[%emt 0:00:04]} 7. d4 {[%emt 0:00:14]} cxd4 {[%emt 0:00:07]} 8. cxd4 {[%emt 0:00:04]} a6 {[%emt 0:00:02]} 9. Bxc6 {[%emt 0:00:23]} dxc6 {[%emt 0:00:03]} 10. h3 {[%emt 0:00:14]} O-O {[%emt 0:00:05]} 11. Nc3 {[%emt 0:00:20]} b5 {[%emt 0:00:05]} 12. Bg5 {[%emt 0:00:47]} h6 {[%emt 0:00:03]} 13. Bh4 {[%emt 0:00:03]} Bb7 {[%emt 0:00:04]} 14. Rc1 {[%emt 0:00:41]} Rac8 {[%emt 0:00:08]} 15. Bg3 {[%emt 0:00:47]} Qd8 {[%emt 0:00:15]} 16. Ne5 {[%emt 0:02:59]} c5 {[%emt 0:00:08]} 17. dxc5 {[%emt 0:00:14]} Bxc5 {[%emt 0:00:17]} 18. a3 {[%emt 0:01:47]} Bd4 {[%emt 0:00:26]} 19. Nf3 {[%emt 0:01:31]} Bxc3 {[%emt 0:00:11]} 20. Qxd8 {[%emt 0:00:24]} Rfxd8 {[%emt 0:00:05]} 21. bxc3 {[%emt 0:00:03]} Nxe4 {[%emt 0:00:04]} 22. Bh4 {[%emt 0:00:29]} g5 {[%emt 0:00:13]} 23. Bg3 {[%emt 0:00:18]} Nxg3 {[%emt 0:00:22]} 24. fxg3 {[%emt 0:00:04]} Bxf3 {[%emt 0:00:03]} 25. gxf3 {[%emt 0:00:03]} Rd3 {[%emt 0:00:03]} 26. Kf2 {[%emt 0:00:14]} Rdxc3 {[%emt 0:00:02]} 27. Rxc3 {[%emt 0:00:03]} Rxc3 {[%emt 0:00:03]} 28. a4 {[%emt 0:00:08]} Kg7 {[%emt 0:00:29]} 29. Rb1 {[%emt 0:00:13]} bxa4 {[%emt 0:00:16]} 30. Ra1 {[%emt 0:00:03]} a3 {[%emt 0:00:02]} 31. h4 {[%emt 0:00:11]} a5 {[%emt 0:00:06]} 32. hxg5 {[%emt 0:00:03]} hxg5 {[%emt 0:00:05]} 33. f4 {[%emt 0:00:03]} gxf4 {[%emt 0:00:03]} 34. gxf4 {[%emt 0:00:01]} a4 {[%emt 0:00:02]} 35. Ke2 {[%emt 0:00:02]} Kf6 {[%emt 0:00:03]} 36. Kd2 {[%emt 0:00:02]} Rb3 {[%emt 0:00:03]} 37. Kc2 {[%emt 0:00:19]} Kf5 {[%emt 0:00:09]} 38. Rf1 {[%emt 0:00:05]} f6 {[%emt 0:00:10]} 39. Kd2 {[%emt 0:00:26]} a2 {[%emt 0:00:19]} 40. Ra1 {[%emt 0:00:24]} Rb2+ {[%emt 0:00:03]} 41. Kc3 {[%emt 0:00:03]} a3 {[%emt 0:00:02]} 42. Kd3 {[%emt 0:00:20]} Kxf4 {[%emt 0:00:07]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.1"]
[White "Adly, Ahmed"]
[Black "Silva, David"]
[Result "1/2-1/2"]
[ECO "E67"]
[WhiteElo "2615"]
[BlackElo "2258"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,92,5,5,8,10,7,29,0,-11,-28,-37,-39,-33,-31,0,-34,-37,-49,-25,-33,-28,-56,-22,-37,-10,-15,0,0,0,0,0,0,0,-24,0,0,0,0,137,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 O-O 5. c4 d6 6. O-O Nbd7 7. Nc3 e5 8. h3 Re8 9. dxe5 dxe5 10. Be3 c6 11. Qc2 {E67: King's Indian: Fianchetto: 6...Nbd7.} Qe7 12. Rad1 a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 13. b3 {White has an edge.} Nc5 14. Qc1 {[#]} Nfe4 $146 ({Predecessor:} 14... Nfd7 15. Ng5 Ne6 16. Nxe6 Qxe6 17. Ne4 Bf8 18. Bh6 f5 19. Bxf8 Rxf8 20. Rd6 Qe7 {0-1 (74) Adly,A (2551)-Lie,E (2428) Reykjavik 2008}) 15. Nxe4 Nxe4 16. Ng5 Nf6 17. Kh2 a4 18. Nf3 Ne4 19. Nd2 Nxd2 20. Qxd2 axb3 21. axb3 Be6 22. Ra1 e4 (22... Ra3 {keeps more tension.} 23. Qb2 Rea8 24. Rfd1 Rxa1 25. Rxa1 Rxa1 26. Qxa1 f6) 23. Rxa8 Rxa8 24. Bxe4 Bxh3 $1 25. Kxh3 {[#] Threatens to win with Bf3.} Qxe4 26. Qd7 Bf8 27. Rd1 Ra5 {[%cal Ra5h5]} 28. c5 Rb5 {[#]} (28... Ra8 $11 {remains equal.}) 29. Qc8 ({White must play} 29. Qd8 $1 $16 {Black must now prevent Bh6.} Qe7 30. Qb8) 29... Qe6+ $11 {The position is equal.} ({Don't blunder} 29... Rxb3 $2 30. Bh6 $18) 30. Qxe6 fxe6 {[%mdl 4096] Endgame KRB-KRB} 31. Rd8 {aiming for Bh6.} Kf7 32. Rd7+ Kg8 33. Kg4 Rxb3 34. Rd8 {Strongly threatening Bh6.} Kf7 (34... h5+ {with more complications.} 35. Kg5 Kf7 36. Rd7+ Be7+ 37. Kh6 Ke8) 35. Rd7+ Kg8 36. Bd4 Rb5 37. f4 Bxc5 38. Be5 Kf8 39. Rxh7 {Black should prevent Kg5.} Be7 40. e4 Rb4 41. Kf3 Rb3+ 42. Kg2 Re3 43. Rh8+ Kf7 44. Rh7+ Kf8 45. Rh8+ Kf7 46. Rh7+ Kf8 {Weighted Error Value: White=0.10/Black=0.13} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.2"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Amin, Bassem"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2422"]
[BlackElo "2693"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,80,49,27,73,52,71,63,88,83,112,100,111,125,154,164,118,135,237,214,233,234,214,133,226,193,207,214,212,214,195,158,105,-46,-22,-412,-400,-784,-768,-769,-763,-781,-777,-774,-790,-753,-710,-734,-706,-1954,-2257,-29982,-29983,-29984,-29985,-29986,-29987,-29989,-29990,-29994,-29995,-29995,-29996]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. bxa5 Rxa5 11. a4 c5 {E97: King's Indian: Classical Main Line (6...e5 7 0-0 Nc6): 8 Be3 and 8 d5 Ne7, not 9 Ne1.} 12. Ra3 {12.Bd2 is more advanced technology.} Ne8 13. Bd2 {[#]} h6 $146 {White is slightly better.} ({Predecessor:} 13... Ra6 14. Qb1 {½-½ (14) Huzman,A (2602)-Jovanovic,Z (2558) Budva 2009}) 14. Qc1 g5 15. h4 f6 16. Nh2 Ng6 17. g3 gxh4 18. Nb5 ({Resist} 18. Bxh6 Bh3) 18... f5 (18... Ra6 $16 {might work better.}) 19. Bxa5 Qxa5 20. Bh5 Kh7 21. f4 {aiming for exf5.} Qd8 (21... hxg3 $16 22. Bxg6+ (22. Rxg3 Nxf4 23. Bd1 Kh8 $17) 22... Kxg6 23. Rxg3+ Kh7) 22. Bxg6+ $18 Kxg6 23. exf5+ Rxf5 24. Qc2 h5 25. fxe5 Bxe5 {[#]} 26. Raf3 ({Only move:} 26. gxh4 $1 $16 {And now Nf3 would win.} Qxh4 27. Nf3 Qg4+ 28. Qg2) 26... Qg5 $15 27. Rxf5 $4 {[%mdl 8192] White does not recover from this.} (27. Rb3 $1 $11 {and White has nothing to worry.}) 27... Bxf5 $19 28. Qg2 (28. Rxf5 $142 Qxf5 29. Qe2) 28... hxg3 29. Nf3 Qe3+ 30. Kh1 Be4 31. Re1 Qxe1+ 32. Nxe1 Bxg2+ 33. Kxg2 {[%mdl 4096] Endgame KBN-KNN} Kf5 34. Nf3 Kg4 35. Nxe5+ dxe5 {KN-KN. Black mates.} 36. d6 Nf6 37. Nc3 h4 38. Ne4 h3+ 39. Kg1 h2+ 40. Kg2 Nxe4 {Weighted Error Value: White=0.75/Black=0.19} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.3"]
[White "Bellahcene, Bilel"]
[Black "Paiva, Donaldo"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2510"]
[BlackElo "2230"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,0,0,0,37,64,59,60,147,56,74,76,70,29,35,31,104,108,122,110,121,116,109,0,0,0,28,32,111,71,69,70,84,82,81,77,83,56,83,64,64,0,79,63,70,-7,24,38,70,0,33,35,152,89,103,0,0,0,438,455,442,456,477,462,460,454,452,471,528,502,472,497,501,460,477,477,481,473,516,448,560,455]} 1. d4 Nf6 2. Bf4 c5 3. e3 g6 4. Nc3 Bg7 5. Be2 O-O 6. Qd2 {[#] A45: Trompowsky Attack.} a6 $146 ({Predecessor:} 6... cxd4 7. exd4 d5 8. Bh6 Nc6 9. Bxg7 Kxg7 10. O-O-O Bf5 11. Kb1 Nb4 12. Rc1 Rc8 {1-0 (33) Dunn,A (2033)-Hymer,B (1777) Doncaster 2017}) 7. dxc5 Nc6 8. e4 {White is slightly better.} b6 {[#]} (8... d6 $14) 9. cxb6 (9. e5 $1 $16 {[%cal Re5f6]} Ne8 10. Bf3) 9... Qxb6 $14 10. e5 Ne8 11. Na4 Qc7 12. e6 Be5 ({Black should play} 12... d6 $14) 13. exf7+ $16 Rxf7 14. Bxe5 Nxe5 15. Nf3 Bb7 {[%cal Re5f3] [#]} 16. O-O-O ({White has to play} 16. Nxe5 $1 $16 Qxe5 17. f3) 16... Nxf3 $11 17. Bxf3 Bxf3 18. gxf3 Nd6 (18... e6 $14) 19. Rhe1 Rc8 20. Nc3 Qb7 {aiming for ...Nc4!} 21. Qd5 Qxd5 22. Nxd5 Kf8 23. Re3 Rc6 24. a4 a5 25. Rb3 (25. b3 $14) 25... Rf5 (25... e6 $11 {keeps the balance.}) 26. Rb8+ $16 Kf7 27. Rd3 ({Better is} 27. Rd8 $14) 27... Rc5 28. Nb6 Rh5 29. b3 (29. h3 $1 $14) 29... Rxh2 30. Nxd7 Rg5 ({Black should try} 30... Rc7 $14 31. Ne5+ Kg7) 31. Rd2 $36 {[%mdl 2048] White has strong initiative.} h5 32. f4 (32. Kb2 $16) 32... Rg1+ $11 33. Kb2 {Threatens to win with Ne5+.} h4 $2 {[%mdl 8192]} (33... Rhh1 $1 $11 {and Black has nothing to worry.} 34. Re2 Nf5) 34. Ne5+ $18 {White is clearly winning.} Kg7 35. Nf3 $1 {[%csl LRg1,LRh2][%mdl 64] Double Attack} Rhh1 {Hoping for ...Rb1+.} 36. Nxg1 Rxg1 {[%mdl 4096] Endgame KRR-KRN} 37. Rd3 Rh1 38. b4 h3 39. bxa5 {a6 is the strong threat.} Nc4+ 40. Kc3 Nxa5 41. Re8 Nc6 {intending ...Ra1.} 42. Rc8 Na5 43. Rc5 Nb7 44. Rc7 {[%mdl 64] Double Attack} Nd6 45. Rxd6 {Weighted Error Value: White=0.22/Black=0.47} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.4"]
[White "Wanyama, Harold"]
[Black "Ortega Amarelle, Mariano"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2312"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,126,-20,-13,-9,-7,-27,0,-11,-3,-21,0,-20,-17,-25,-6,-40,0,-28,-18,-25,-28,-23,-22,-21,0,-16,0,-55,-42,-33,-20,-21,37,43,41,24,33,33,52,25,35,23,83,0,58,-8,0,-8,23,0,0,0,0,-2,-6,0,0,0,0,-23,-22,-22,-22,-25,-25,-39,-40,-54,-50,-53,-53,-60,-60,-66,-66,-80,-80,-80,-80,-96,-81,-96,-66,-75,-57,-191,-190,-182,-29,-227,-227,-226,-203,-205,-29,-29,-29,-35,-33,-34,-34,-36,-25,-25,-25,-25,-25,-28,-17,-29,-29,-34,-35,-40,0,-25,-25,-25,-25]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. g3 d5 6. cxd5 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} exd5 7. Bg2 c6 8. Nf3 {The position is equal.} Re8 9. O-O Bd6 10. b3 Bg4 11. Bb2 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8g6][%mdl 32] [#]} 12. Rfe1 $146 ({Predecessor:} 12. e3 Qe7 13. Rfc1 h6 14. Re1 Qe6 15. Nd2 Bh3 16. Bh1 Bf5 17. Qc1 Ne4 18. Ncxe4 dxe4 {0-1 (39) Vodyasov,E (2248)-Ivanov,T (2433) Novosibirsk 2003}) 12... Nf8 13. Na4 Ng6 14. Nc5 Qc8 15. Rac1 Bf5 16. Qd1 a5 17. a3 Ne4 18. Nd3 (18. Nd2 $11) 18... f6 19. Nd2 h5 20. Nxe4 Bxe4 (20... dxe4 $11 21. Nc5 Bxc5 22. Rxc5 Ne7) 21. f3 $1 $14 {[%cal Rf3e4]} Bf5 22. e4 dxe4 23. fxe4 Bg4 24. Qd2 h4 25. e5 fxe5 26. dxe5 (26. d5 $1 $16) 26... Be7 {[#]} (26... Bc7 $11) 27. Nc5 ({White should try} 27. Bd5+ $1 $14 Be6 28. Be4) 27... hxg3 28. hxg3 Qd8 29. Qc3 {And now Qc4+ would win.} Bxc5+ 30. Qxc5 Be6 31. Be4 Qg5 32. Qe3 Qxe3+ 33. Rxe3 Ne7 34. Bd4 (34. Rd1 {seems wilder.} Nf5 35. Red3 Nh6 36. R1d2 Nf7 37. Bc3) 34... Nf5 35. Bxf5 Bxf5 36. Bc5 Rad8 37. Bb6 Rd5 38. Rce1 Be6 39. b4 a4 40. Bc5 Kf7 41. Rf1+ Kg6 42. Rf8 Rxf8 43. Bxf8 $17 {[%mdl 4096] Endgame KRB-KRB} Rd2 44. Kf1 Ra2 45. Ke1 Rh2 46. Rd3 Rh8 47. Rd6 {[#]} Kf7 $1 $19 ({Don't take} 47... Rxf8 48. Rxe6+ Kf7 49. Rd6 $17) 48. Bxg7 Rg8 (48... Rh3 $19 49. Kf2 Rh2+ 50. Ke1 Ra2) 49. Bf6 $2 (49. Bh6 $11) 49... Rxg3 50. b5 cxb5 51. Rb6 Bc4 $2 (51... Rxa3 $19 {White must now prevent ...Ra1+.} 52. Rxb7+ Kg6) 52. Rxb7+ $11 Ke6 53. Rb6+ $1 Kf5 54. Be7 Re3+ 55. Kd2 Rxe5 56. Bb4 Rd5+ 57. Kc2 Rd7 58. Rd6 Rh7 (58... Rc7 {is interesting.} 59. Rd4 Ke5 60. Bc3 Ke6 61. Bb4 Bf1+) 59. Rd8 Rh2+ 60. Rd2 Rh3 61. Rd8 Rh2+ 62. Rd2 Rxd2+ 63. Kxd2 Ke4 {And White is the lucky defender.  Weighted Error Value: White=0.25/Black=0.21} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.5"]
[White "Kayonde, Andrew"]
[Black "Bouzidi, Ahmed"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "2393"]
[BlackElo "2163"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,98,8,17,11,16,12,14,-23,-31,-29,-18,-25,10,17,23,-78,-82,-108,-97,-140,-137,-134,-134,-111,-29,-56,-43,-148,-130,-168,-142,-150,-150,-250,-250,-233,-250,-240,-233,-297,-307,-316,-317,-323,-318,-316,-248,-239,-243,-252,-187,-187,-177,-176,-39,-173,-152,-153,-153,-153,-146,-135,-27,-35,0,-8,0,-8,0,0,0,-8,-8,-8,-6,-275,-296,-281,-259,-237,-230,-308,-293,-5210,-2626,-1854,-1367]} 1. d4 Nf6 2. Bg5 d5 3. e3 Nbd7 4. Nf3 e6 5. Bd3 Be7 6. Nbd2 c5 {6...b6 is the hot move.} 7. c3 a6 8. Ne5 {D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5.} Nxe5 9. dxe5 Nd7 10. Bf4 {[#] The position is equal.} g5 $146 ({Predecessor:} 10... c4 11. Bc2 Qc7 12. Qg4 g6 13. Qg3 b6 14. h4 Bb7 15. Ba4 O-O-O 16. Bxd7+ Qxd7 {½-½ (46) Petric,M (2106)-Jakovljevic,Z (2150) Belgrade 2011}) 11. Bg3 h5 12. h3 b5 (12... h4 $5 13. Bh2 $8 Qb6 $11) 13. O-O Bb7 14. e4 (14. Be2 $11) 14... c4 $17 15. Bc2 Nc5 16. Qe2 d4 17. cxd4 Qxd4 18. Rab1 g4 (18... Nd3 $17 {Strongly threatening ...h4.} 19. Bxd3 cxd3) 19. Rfd1 Nd3 {[%mdl 64] Double Attack} 20. h4 (20. hxg4 $15 h4 21. Bh2) 20... O-O-O (20... Nxb2 $6 21. Rxb2 Qxb2 22. Nxc4 $11) 21. b3 Qc3 $36 {[%mdl 2048] Black is on the roll.} 22. Bxd3 Qxd3 23. Qxd3 (23. Qe1 $17 Bc5 24. Bf4) 23... Rxd3 $19 ({Less strong is} 23... cxd3 24. b4 $17) 24. bxc4 Rhd8 25. Bf4 bxc4 26. Kh2 Kb8 ({Much less strong is} 26... Bxh4 27. Rdc1 $19) 27. Rdc1 Rxd2 28. Bxd2 Rxd2 {[%mdl 64] Double Attack} 29. Rxc4 Bxh4 30. Rcb4 Rd7 31. f3 Be7 32. Ra4 gxf3 33. gxf3 Rd3 (33... Ka7 $19 34. Rc4 Bg5) 34. Kg3 (34. Rxa6 $1 $15 Bg5 35. Rab6 Bf4+ 36. Kh3) 34... h4+ 35. Kg4 Ka7 36. Rc4 Bd8 37. Rcc1 Rd2 (37... Kb8 $17 38. Rd1 Rxd1 39. Rxd1 Kc8) 38. Rd1 $11 Rg2+ 39. Kh5 Bb6 40. Rd6 $1 {[%cal Rd6b6]} Be3 (40... Bc7 $5 41. Rd7 $8 Bb6 $11) 41. Rd7 Bb6 {aiming for ...h3.} 42. Rd6 Bc7 43. Rd7 Kb8 44. Rxf7 $2 {[%mdl 8192]} (44. Kxh4 $11 {and White is okay.} Rxa2 45. Rxf7) 44... h3 $19 {White must now prevent ...h2.} ({Weaker is} 44... Rxa2 45. Kxh4 Ra5 46. f4 $11) 45. Rf8+ Ka7 {...h2 is the strong threat.} 46. Rf7 {[#]} Bb6 47. a4 {Hoping for a5!} h2 {And now ...Rg1 would win.} 48. a5 $2 {[#]} (48. Rh1 Bg1 49. Re7) 48... Rg1 $1 {[%cal Rh2h1]} 49. axb6+ Kb8 {[%cal Rh2h1] Weighted Error Value: White=0.47/Black=0.22} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.6"]
[White "Seddaoui, Yamine"]
[Black "Zaibi, Amir"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2127"]
[BlackElo "2381"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,11,38,25,90,83,109,-20,-12,-13,0,-8,0,0,3,0,0,-24,0,0,20,6,23,14,18,-17,0,-10,44,35,86,83,88,76,72,72,131,141,213,208,196,80,98,32,8,18,27,3,6,-34,27,42,94,44,43,-65,0,-28,112,-281,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Qf3 {B43: Sicilian: Kan Variation: 5 Nc3.} b5 (6... Nf6 $11) 7. Bf4 $1 $16 {[%cal Rf4c7]} d6 8. Bg3 {[#]} (8. O-O-O $1 $16) 8... b4 $146 ({Predecessor:} 8... Bb7 9. a3 Nf6 10. Bh4 Be7 11. O-O-O Nbd7 12. Bd3 Rc8 13. Qe2 Ne5 14. Bg3 O-O {0-1 (39) Yilmaz,A-Koca,C (1643) Antalya 2020}) 9. Nd1 (9. Nd5 $2 exd5 10. exd5 Be7 $19) 9... Bb7 10. Bd3 h5 11. h3 Nd7 (11... h4 $5 12. Bh2 $8 Nd7 $11) 12. O-O Ngf6 (12... h4 $5 13. Bh2 $8 Ngf6 $11) 13. Qe2 h4 14. Bh2 e5 15. Nb3 Be7 16. Ne3 g6 ({But not} 16... Bxe4 $2 17. Bxe4 Nxe4 18. Nd5 $18) 17. Ng4 Nxg4 18. Qxg4 Rh5 (18... a5 $11) 19. c3 Rg5 (19... a5 $14) 20. Qe2 $16 bxc3 21. Rac1 Qb6 22. Rxc3 f5 (22... d5 $142) 23. Kh1 Nf6 (23... fxe4 $16 {is a better defense.} 24. Bxe4 Qb5 25. Qxb5 Bxe4) 24. f4 $18 exf4 {[%cal Rf5e4]} 25. Bxf4 (25. Nd2 $1 $18 {has better winning chances.}) 25... Nh5 26. Bb1 (26. Bc2 $16 Nxf4 27. Rxf4 {[%mdl 64] Double Attack}) 26... Nxf4 $14 27. Rxf4 {[%mdl 64] Double Attack} Qb5 28. Qf2 {And now Rc7 would win.} Bf6 29. Re3 {[%cal Re4f5]} O-O-O (29... Kf8 $15) 30. Rxh4 $11 Kb8 (30... Rd7 $14) 31. Bd3 Qb6 32. Bf1 ({White should play} 32. Rh7 $14) 32... Be5 (32... fxe4 $15 33. Qxf6 Rf5) 33. Rh7 {[#] aiming for Na5!} Bxe4 {[#]} (33... Rg3 $1 $11 {keeps the balance.} 34. Re2 Qxf2 35. Rxf2 Rc8 36. exf5 gxf5) 34. Nd2 $2 {[%mdl 8192] [#]} (34. Qe1 $1 $16 {Black must now prevent Na5.} Rh5 35. Rxh5 gxh5 36. Nd2) 34... Rg3 $1 {[%mdl 512]} 35. Re2 {The position is equal.} (35. Nf3 Bxf3) 35... Qxf2 36. Rxf2 Bd5 (36... d5 {with more complications.} 37. Bxa6 Rd6 38. Bb5 Re3 39. Rf1 Bxb2 40. Nxe4 dxe4 41. Rb1 Rd2) 37. Nf3 Bxf3 (37... Rh8 {seems wilder.} 38. Rxh8+ Bxh8 39. Bxa6 Bxa2 40. Rd2 Kc7) 38. Rxf3 Rxf3 39. gxf3 {[%mdl 4096] Endgame KRB-KRB} a5 40. b3 d5 41. Re7 Bf4 42. Re6 g5 43. Bd3 Rc8 44. Rb6+ Kc7 45. Rb5 Kd6 46. Bxf5 Rc1+ 47. Kg2 a4 48. bxa4 Rc4 49. Rb2 Rxa4 50. Kf2 Ra3 51. Bb1 {Weighted Error Value: White=0.37/Black=0.28} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.7"]
[White "Oatlhotse, Providence"]
[Black "Amdouni, Zoubaier"]
[Result "0-1"]
[ECO "E01"]
[WhiteElo "2190"]
[BlackElo "2229"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,152,42,29,32,31,2,18,14,37,0,8,0,0,-11,0,-11,-11,-14,-14,-15,-15,-14,-14,-22,-20,-26,-17,-24,-16,-26,-25,-24,0,-18,0,-23,-18,-25,-27,-45,-45,-53,-45,-61,-62,-149,-62,-174,-48,-56,0,-156,0,-110,-110,-170,-166,-129,-127,-136,-137,-233,-156,-183,-29,-412,-408,-349,-273,-256,-254,-597,-270,-264,-271,-271,-225,-263,-250,-243,-221,-259,-255,-455,-454,-554,-460,-822,-456,-5731,-1823,-29962,-29964,-29955,-4786,-29955,-29944,-1825,-976,-29981,-29982,-29982,-29983,-29985,-29980,-29986,-29987,-29987,-29988,-29988,-29989,-29989,-29990,-29990,-29991,-29991,-29992,-29992,-29993,-29993,-29994,-29994,-29993,-29995,-29993,-29996,-29996,-29997,-29998,-29998,-29999]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 e6 5. O-O Nbd7 6. Qc2 Bd6 7. d4 O-O 8. Nbd2 e5 9. cxd5 cxd5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Nf3 Bd6 13. Be3 {E01: Catalan: Early deviations.} Re8 14. Rfd1 {[#]} Rxe3 $146 ({Predecessor:} 14... Bg4 15. Nd4 Qd7 16. Qb3 Be5 17. Nf3 Bd6 18. Rac1 b6 19. Rd2 Rac8 20. Qd1 Rxc1 21. Qxc1 {1-0 (50) Torres Sanchez,J (2275)-Fenollar Jorda,M (2237) Spain 2004}) 15. fxe3 {The position is equal.} Qe7 16. Qc3 Bd7 17. Rac1 Re8 18. Nd4 Ng4 19. Rd3 Nxe3 20. Rxe3 Qxe3+ 21. Qxe3 Rxe3 22. Bxd5 b6 23. Kf2 Re5 24. Bf3 Bc5 25. e3 h5 26. a3 a5 27. Rc3 a4 28. Ne2 Rf5 29. Nd4 Rf6 30. Kg2 g6 31. Rd3 Rd6 32. h3 Kf8 33. g4 h4 34. Rd1 (34. Be4 $15) 34... Ke7 ({Black should try} 34... f5 $1 $17 35. gxf5 gxf5) 35. Kf2 (35. Be4 $15) 35... Kf6 ({Black should play} 35... f5 $1 $19 36. gxf5 gxf5) 36. Be2 Ke7 (36... Kg7 $15) 37. Bf3 $1 $17 Kf8 $2 (37... f5 $1 $17 {aiming for ...f4!} 38. Ke2 f4) 38. Be2 (38. Kg2 $11) 38... f5 39. gxf5 (39. Nf3 $17 {was called for.}) 39... gxf5 $19 40. Nf3 Rxd1 41. Bxd1 $17 {[%mdl 4096] Endgame KBB-KBN} f4 $1 42. Nxh4 (42. Ne5 $17 fxe3+ 43. Kf3) 42... Bxe3+ 43. Kf3 {[#]} Kg7 (43... Kf7 $1 $19 {Strongly threatening ...Bd4.} 44. Bc2 Bc1) 44. Kg2 $2 {[%mdl 8192] This costs White the game.} (44. Bxa4 $1 $11 Bxa4 45. Nf5+ Kf6 46. Nxe3 fxe3 47. Kxe3) 44... Bc1 $19 45. b3 axb3 ({Not} 45... Bxa3 46. bxa4 Bc6+ 47. Nf3 $17) 46. Bxb3 Bxa3 47. Kf3 $2 (47. Nf3 {is a better chance.}) 47... Bc1 (47... Be7 $142 48. Ng2 Bc6+ 49. Kxf4 Bxg2) 48. Ng2 Bc6+ ({Stronger than} 48... Bxh3 49. Nxf4 Bd7 50. Ke4 $11) 49. Kf2 Kf6 50. Ne1 Be3+ 51. Ke2 Bc5 52. Bc2 b5 53. Nd3 $2 (53. Nf3 {was necessary.}) 53... f3+ 54. Kf1 Be3 55. Bd1 (55. Nb4 $142 Bb7 56. h4) 55... Kf5 56. h4 (56. Ke1 $142) 56... Bd5 57. Bc2 Bc4 58. Ke1 Kg4 59. Ne5+ {[#]} Kg3 $1 60. Nxc4 bxc4 {KB-KB} 61. Kf1 Kxh4 {Black mates.} 62. Be4 Kg3 63. Bc2 Kf4 64. Bd1 Bd4 65. Ba4 Ke3 66. Ke1 f2+ 67. Kf1 Kd2 68. Bb5 c3 69. Ba4 c2 70. Bxc2 Kxc2 71. Ke2 Bc5 72. Kf1 Kd1 73. Kg2 Ke1 74. Kh2 f1=Q {[%cal Rc5d6]} 75. Kg3 Qf5 76. Kh2 Kf2 {[%cal Rf5h7] Weighted Error Value: White=0.95/Black=0.36} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.8"]
[White "Pascoal, Eduardo A"]
[Black "Miguel, Sergio"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2184"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,108,34,73,36,49,30,37,-2,5,5,-6,-4,0,-37,-48,-38,-40,-49,-10,-20,-7,-19,0,0,20,10,14,-81,-83,-88,0,0,2,-66,-56,-59,-49,-41,-17,-35,-45,-38,-19,-34,-38,-30,-6,-23,-22,-28,-14,-25,-9,-78,0,0,0,-22,65,59,42,23,19,0,100,43,67,13,45,54,44,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 c6 5. Qb3 Qb6 6. c5 Qc7 7. g3 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} (7. Bf4 $5 {[%cal Rf4c7]} Qc8 8. Nh4 $16) 7... Nd7 8. Bf4 Qc8 {[#]} 9. h3 $146 {White is slightly better.} ({Predecessor:} 9. Nh4 Bg4 10. h3 Bh5 11. g4 Bg6 12. Nxg6 hxg6 13. e3 Ngf6 14. Bg2 Be7 15. O-O {½-½ (43) Lajthajm,B (2460)-Tosic,M (2481) Budva 2004}) 9... Ngf6 10. g4 Bg6 11. Bg2 Be7 12. Ne5 Nxe5 13. Bxe5 O-O 14. O-O b6 15. cxb6 axb6 16. Qxb6 Nd7 17. Qc7 c5 18. dxc5 Bxc5 19. e3 (19. Qxc8 $11 Rfxc8 20. Bg3) 19... Nxe5 $17 20. Qxe5 {[#] White wants to play Nxd5!} f6 (20... Qb7 $1 $17 {[%cal Rb7b2]} 21. b3 Be7) 21. Qf4 $11 Rb8 22. b3 (22. Rac1 $11) 22... Ba3 {[%mdl 1024] Black has compensation.} 23. Na4 Rb4 24. Qg3 Qc6 25. Rfd1 Kh8 26. Rd4 Rb7 27. Rad1 Bd6 28. f4 Bb8 29. Kh1 f5 30. Rc4 Qb5 31. Rcc1 Bd6 32. Qe1 (32. g5 $11 {keeps the balance.}) 32... Bb4 ({Black should play} 32... Ba3 $17) 33. Qf1 Qa5 34. Qe2 Be8 (34... Rc7 $11) 35. gxf5 $14 Rxf5 36. Rc8 Rf8 37. e4 {[%cal Re4d5]} dxe4 {[#]} (37... Bxa4 $11 {remains equal.} 38. Rxf8+ Bxf8 39. bxa4 Qxa4) 38. Qxe4 (38. Bxe4 $6 Rbf7 $11) (38. Rdd8 $1 $16 {[%cal Rd8e8]} Rc7 39. Ra8 (39. Bxe4 Rxc8 40. Rxc8 Bxa4 $15) (39. Qxe4 Bd6 $11)) 38... Rbf7 39. Rdd8 ({White should try} 39. Qxe6 $14 Rf6 40. Qe5 Bxa4 41. Rxf8+ Rxf8 42. Qxa5 (42. bxa4 Qxa4 43. Rd4 Qa3 $11) 42... Bxa5 43. Rd5 (43. bxa4 Rxf4 44. Bc6 g6 $14) 43... Bxb3 44. Rxa5 (44. axb3 Be1 $14)) 39... Bxa4 (39... Bd7 {seems wilder.} 40. Rxf8+ Rxf8 41. Ra8 Rxa8 42. Qxa8+ Qxa8 43. Bxa8 e5) 40. Rxf8+ Rxf8 41. Rxf8+ (41. Qxe6 {looks sharper.} Bc6 42. Rxc6 Qxa2 43. Rc8 Qf2 44. Qf5) 41... Bxf8 {The position is equal.} 42. Qxa4 (42. bxa4 {with more complications.} Qd2 43. Kh2 Qxa2 44. h4 Kg8 45. Kg3) 42... Qe1+ 43. Kh2 Qf2 44. Qe4 h6 45. Qxe6 (45. a4 {is interesting.} Bd6 46. Kh1 Bc5 47. Qa8+ Kh7 48. Be4+) 45... Qxf4+ 46. Kh1 Qc1+ 47. Kh2 Qf4+ 48. Kh1 Qc1+ 49. Kh2 Qd2 50. Qe8 Qf4+ 51. Kh1 Qc1+ 52. Kh2 Qf4+ 53. Kh1 Qc1+ 54. Kh2 Qf4+ {Weighted Error Value: White=0.20/Black=0.18} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.9"]
[White "Mwashe, Philip"]
[Black "Simoes, Joao"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1756"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,112,47,67,32,67,64,66,52,56,47,48,46,84,60,68,52,70,52,58,29,52,36,59,0,0,0,30,-23,4,0,0,-28,0,0,0,-89,47,45,47,21,45,26,13,0,27,4,54,25,95,106,90,-601,-603,-669,-410,-416,-416,-416,-409,-351,-218,-200,-204,-185,15,16,312,-349,-331,-333,-250,-222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,400,406,414,-450,-400,-5097,-5102,-29979,-29980,-29979,-29980,-29987,-29988,-29992,-29993]} 1. e4 d5 2. exd5 Qxd5 3. d4 Nf6 4. Nf3 Bg4 5. Be2 e6 6. a3 {B01: Scandinavian Defence.} c6 7. c4 Qd6 8. Nc3 {White is slightly better.} Nbd7 {[#]} 9. h3 $146 ({Predecessor:} 9. Qb3 Qc7 10. Be3 Bd6 11. Rc1 O-O 12. h3 Bh5 13. O-O Rfe8 14. d5 Bc5 15. Bxc5 Nxc5 {½-½ (54) Molnar,J (2166)-Nagyajtai,G (2157) Hungary 2015}) 9... Bh5 10. Be3 a5 11. Qd2 Qc7 12. O-O Be7 13. Rac1 O-O 14. Rfe1 (14. Bf4 $5 {[%cal Rf4c7]} Bd6 15. Bxd6 Qxd6 16. Rfe1 $14) 14... Rfd8 15. g4 Bg6 16. Bd3 ({White should try} 16. Bf4 $14 Bd6 17. Bxd6 Qxd6 18. Qe3) 16... Bxd3 $11 17. Qxd3 Nf8 18. Ne4 ({Better is} 18. g5 Nh5 19. Qe4) 18... Ng6 19. Nxf6+ Bxf6 20. Qe4 (20. g5 $5 {[%cal Rg5f6]} Be5 21. Nxe5 Nxe5 {[%mdl 64] Pin} 22. Qe4 $11) 20... Qd7 21. h4 Be7 ({Not} 21... Nxh4 $2 22. Nxh4 Bxh4 23. g5 $18) 22. h5 {[#]} (22. g5 $11) 22... Nf8 (22... f5 $1 $17 23. Qd3 (23. Qc2 fxg4) 23... fxg4) 23. Ne5 $36 {[%mdl 2048] Black is under pressure.} Qe8 24. g5 f5 25. gxf6 Bxf6 26. Qg4 c5 (26... Bxe5 $5 27. dxe5 Rd3 $11) 27. Kg2 cxd4 28. Bxd4 Rxd4 29. Qxd4 $16 Qxh5 30. f4 $2 {[%mdl 8192]} (30. Qe4 $16) 30... Ng6 $19 {[%cal Bf8g6,Bg6h4,Bh4f3][%mdl 32]} 31. Qe4 Nh4+ 32. Kf2 Bxe5 33. fxe5 Rf8+ 34. Ke3 Qg5+ 35. Kd3 Nf3 {[%csl Gf3][%cal Rg5d2][%mdl 1024] Black has strong compensation.} 36. Red1 {[#]} Qg2 $2 ({Worse is} 36... Nxe5+ 37. Kc2 $11) (36... Nd2 $1 $19 {[%cal Rd2e4][%mdl 512]} 37. Rxd2 Rd8+ 38. Kc2 Rxd2+ 39. Kb3 Qg3+ 40. Ka2 Qg2 41. Qxg2 Rxg2) 37. Kc3 $11 b5 $2 {[%mdl 8192]} (37... Qg5 $11 {and Black has nothing to worry.}) 38. Qc2 $4 {[%mdl 8192]} (38. cxb5 $18 {is the narrow road to win. Threatens to win with b6.} Qg3 39. Qd3) 38... Qg3 $19 39. Rd3 {Kb3 would now be nice for White.} Qxe5+ 40. Kb3 {[#]} Nd4+ $2 (40... Ne1 $1 $19 {[%cal Re1c2]} 41. Rxe1 bxc4+ 42. Qxc4 Qxe1) 41. Rxd4 $1 $11 Qxd4 42. cxb5 {[%mdl 4096] Endgame KQR-KQR} a4+ 43. Ka2 Qd5+ 44. Qc4 Rb8 45. Qxd5 exd5 {KR-KR} 46. Rc5 h5 47. b3 axb3+ 48. Kxb3 h4 $1 49. Rxd5 g6 $2 {[%mdl 8192]} (49... Kf7 $11 {and Black stays safe.} 50. a4 Ke6) 50. a4 $18 Kf7 51. Rd4 $4 {[%mdl 8192]} (51. Kb4 $18) 51... g5 $19 {Strongly threatening ...h3.} 52. Rb4 (52. Rd5 $142 Rg8 53. Rd7+ Kg6 54. Rd6+ Kh5 55. Kb4) 52... h3 53. Kc3 h2 {Black mates.} 54. Rb1 g4 55. Kd3 g3 56. Ke3 g2 {Quite a comeback for Black.  Weighted Error Value: White=0.74/Black=0.58} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.10"]
[White "Cambando, Jose"]
[Black "Beukes, Dante M"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "2128"]
[BlackElo "2206"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,96,7,50,0,24,-4,1,-48,-56,-64,-59,-85,-8,-5,0,-11,41,-111,-109,-100,-107,-100,-99,-118,-104,-143,-119,-120,-129,-150,-148,-212,-208,-244,-53,-323,-214,-295,-303,-304,-220,-461,-463,-696,-720,-996,-996,-1030,-1018,-957,-558,-678,-634,-684,-671,-695,-693,-687,-687,-835,-814,-956,-956,-953,-949,-962,-936,-5895,-5465,-4898,-3485,-1849,-1261,-1691,-1615,-29988,-29989,-29989,-29990,-29993,-29993,-29994,-29995,-29995,-29996]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. c4 Nc6 7. Nc3 Nh5 8. h3 {A16: English Opening: 1...Nf6 with ...d5.} f5 {[#]} 9. a3 $146 ({Predecessor:} 9. e4 f4 10. g4 Nf6 11. d4 e5 12. dxe5 dxe5 13. g5 Ne8 14. Nd5 Be6 15. b3 Nd6 {½-½ (51) Schwarz,J (1909)-Garbuszus,J (2049) Lueneburg 2019}) 9... e5 10. e4 {next exf5 is good for White.The position is equal.} f4 11. g4 Nf6 12. Nd5 Ne7 (12... Nxg4 $17 13. hxg4 Bxg4) 13. d4 Nexd5 ({Reject} 13... Nxe4 $6 14. dxe5 Nc5 15. Nxc7 $1 $16 (15. Bxf4 Nxd5 16. Qxd5+ Be6 $11)) 14. cxd5 Nxe4 ({Black should try} 14... exd4 $11 15. Nxd4 Qe7) 15. Re1 $2 (15. dxe5 $14 {was the only good move.} dxe5 16. Re1) 15... Ng5 $17 16. dxe5 Nxf3+ 17. Qxf3 {With the idea e6.} Bxe5 18. a4 a5 19. Ra3 Qf6 20. Rb3 b6 21. Bf1 Qg5 22. Rc3 {[#]} (22. Bd2 $17) 22... Rf7 $1 $19 23. Bg2 Bxc3 $2 ({Black should play} 23... h5 $19 {[%cal Rh5g4]} 24. gxh5 gxh5) 24. Qxc3 $4 {[%mdl 8192] Now White is beyond hope.} (24. Re8+ $15 Rf8 25. Rxf8+ Kxf8 26. Qxc3) 24... Bb7 25. Qd3 Raf8 26. Bd2 Re7 27. Rf1 $2 (27. Rxe7 {was necessary.} Qxe7 28. Bc3) 27... h5 28. Bf3 (28. gxh5 $142 Qxh5 29. Re1 Rxe1+ 30. Bxe1) 28... Bc8 29. Bg2 hxg4 30. hxg4 Qxg4 {...f3 is the strong threat.} 31. f3 Qf5 32. Qc4 Bb7 33. Bc3 Qxd5 34. Qxd5+ Bxd5 35. Rd1 Bb3 36. Rd4 d5 37. Bd2 g5 38. Rd3 Bc4 39. Rc3 Re2 40. Bc1 Re1+ 41. Kh2 Rf7 {( -> ...Rh7+)} 42. Kh3 Rh7+ 43. Kg4 Rg1 44. b3 Rxg2+ {Black mates.} 45. Kf5 Rf7+ 46. Kg6 {[#]} g4 $1 47. fxg4 (47. Bxf4 gxf3+) 47... Rxg4+ 48. Kh5 Be2 {[%cal Rf7h7] Weighted Error Value: White=0.82/Black=0.37} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.11"]
[White "Mosutha, Thuso"]
[Black "Meftahi, Houssem"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2036"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,86,45,51,18,21,6,22,16,39,34,50,28,41,39,65,45,40,40,41,25,73,83,145,10,65,21,11,14,64,55,63,76,78,11,12,11,65,0,0,-160,0,-1,-5,-28,-26,-25,-37,-31,-41,-36,-43,-41,-41,-112,-114,-143,-148,-149,-147,-166,-167,-189,-188,-210,-206,-222,-222,-215,-178,-210,-210,-221,-221,-316,-316,-249,-248]} 1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 5. c4 d6 6. Nc3 g6 7. Nf3 {B21: Sicilian: 2 f4 and Morra Gambit.} Bg7 8. O-O Nf6 9. h3 {The position is equal.} O-O 10. Qe2 Be6 11. Rd1 {[#]} Qa5 $146 ({Predecessor:} 11... Nd7 12. Nd5 Bxd5 13. exd5 Nce5 14. Nxe5 Nxe5 15. f4 Nxd3 16. Qxd3 Rc8 17. Rb1 Qa5 {0-1 (72) Hernandez Alvarez,T (2041)-Khachatryan,A (2071) chess.com INT 2020}) 12. Nd5 Rac8 13. b4 Qd8 14. Rb1 Nd7 15. Bg5 f6 16. Be3 b6 (16... Nde5 $142) 17. Rdc1 (17. c5 $16) 17... Nde5 (17... Bf7 $11) 18. Nd4 (18. c5 {is interesting.} Nxf3+ 19. gxf3 dxc5 20. bxc5 Bxd5 21. exd5 Ne5 22. cxb6 Rxc1+ 23. Rxc1 Qd7 24. d6) 18... Nxd4 19. Bxd4 f5 20. exf5 Bxf5 21. Bxf5 Rxf5 22. Kh1 (22. Rc2 $16) 22... e6 $11 23. Ne3 Rf4 (23... Rf7 $11) 24. Rd1 (24. Bxe5 $14 Bxe5 25. Ng4) 24... Qe7 25. g3 $2 {[#]} (25. f3 $11) 25... Rf7 $2 ({Black should play} 25... Qb7+ $17 26. Ng2 Re4) 26. f4 Qb7+ 27. Qg2 Qxg2+ 28. Kxg2 Nxc4 29. Nxc4 Rxc4 30. Bxg7 {[#] Black must now prevent Ba1.} Kxg7 31. Rxd6 {[%mdl 4096] Endgame KRR-KRR} Rc2+ 32. Kf3 ({White should try} 32. Kh1 $15) 32... e5 $1 $17 ({Much worse is} 32... Rxa2 $6 33. Rxe6 Rc7 34. Rbe1 $11) 33. Re1 exf4 34. gxf4 Rxa2 35. h4 Rh2 36. Kg3 Rb2 37. Re4 Rb3+ 38. Kg2 Rc7 39. Rd2 Kh6 40. Red4 Rcc3 41. Rd7 Rg3+ 42. Kf2 (42. Kh2 $142) 42... Rbf3+ $19 43. Ke2 Rxf4 {Weighted Error Value: White=0.39/Black=0.22} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.12"]
[White "Calicoca, Wilton Inacio"]
[Black "Likoko, Elvis"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2122"]
[BlackElo "1646"]
[Annotator "TA"]
[PlyCount "168"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,167,35,50,39,31,18,14,0,43,-14,0,-26,12,8,34,28,43,11,18,8,12,-13,-47,-31,-38,-78,-82,-68,-16,-19,-25,-20,-2,-9,-9,-9,-10,-7,-16,-16,-8,-16,-7,-7,0,0,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,47,62,63,72,135,92,220,231,218,212,363,333,469,463,377,334,484,477,367,268,284,260,239,0,0,-2,202,0,0,0,0,0,0,0,0,0,0,-633,-583,-2149,-2138,-1946,-1629,-2346,-2132,-2026,-1833,-1828,-1780,-1768,-1740,-1716,-1689,-1618,-1578,-1516,-1462,-3413,-3763,-2922,-2327,-1425,-1536,-29979,-29982,-29975,-29976,-29978,-29979,-29987,-29988,-29988,-29985,-29993,-29990,-29990,-29990,-29990,-29983,-29990,-29991,-29991,-29992,-29994,-29994,-29994,-29995,-29995,-29996,-29996,-29997,-29998,-29998,-29999]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. Be2 Bb4 8. f3 {B41: Sicilian: Kan Variation: 5 c4.} Nc6 9. Nxc6 dxc6 10. O-O {The position is equal.} e5 11. Kh1 (11. Be3 $14) 11... O-O {[#]} 12. Bg5 $146 ({Predecessor:} 12. Be3 Bxc3 13. bxc3 c5 14. Rb1 Be6 15. Qa4 Rab8 16. Rb2 Rfd8 17. Rfb1 Bd7 18. Qa3 {1-0 (47) Kotlowska,A (2153)-Tarnowska,A (1833) Olsztyn 2013}) 12... Be7 13. Qc2 h6 14. Be3 Nh5 15. c5 Bg5 16. Bxg5 hxg5 17. Qd2 Nf4 18. Rfd1 Be6 19. Bf1 Rfd8 20. Qe3 f6 ({Black should try} 20... g4 $15) 21. g3 $11 Ng6 22. Be2 Kf7 23. Na4 Rxd1+ 24. Rxd1 Rd8 25. b3 Rxd1+ 26. Bxd1 Qd7 27. Be2 Qd8 28. Kg2 Qa5 29. Kf2 Nf8 30. Qd3 Qc7 31. Qc3 Nd7 32. Bc4 Nf8 33. Nb6 Qd8 34. Ke2 Bxc4+ 35. Nxc4 ({Much weaker is} 35. Qxc4+ Ne6 $17) 35... Qd7 36. Nd6+ Kg6 37. Qb4 Ne6 38. Qxb7 Nd4+ $1 39. Ke3 Qh3 40. Qf7+ Kh7 (40... Kh6 $16) 41. Ne8 $1 $18 {[%csl Ge8][%cal Rf7g7]} Qh6 42. g4 Nc2+ $2 (42... Qg6 43. Qxg6+ Kxg6) 43. Kd3 Ne1+ (43... Nd4 {was worth a try.} 44. Kc4 Nxf3) 44. Kc3 Nxf3 {intending ...a5.} 45. h3 Ng1 (45... a5 {is a better defense.} 46. Kb2 Ne1) 46. Kb4 Qg6 47. Qe7 Nxh3 48. Nd6 Nf2 49. Ka5 $2 (49. Qd7 $18) 49... Nxg4 $11 {Hoping for ...Nf2.} 50. Kxa6 {Strongly threatening b4.} Ne3 $2 {[#]} (50... Nf2 $1 $11 51. b4 Nxe4) 51. Qd7 $2 (51. b4 $1 $18 {[%cal Rb4b5] aiming for b5.} Nc2 52. b5 cxb5 53. Nf5 Nb4+ 54. Kxb5) 51... g4 52. a4 {Threatens to win with b4.} g3 53. Qh3+ Kg8 54. Qe6+ Kh7 55. Qh3+ Kg8 56. Nc8 $2 {[%mdl 8192] [#]} (56. Qe6+ $11 Kh8 57. Qh3+ Kg8) 56... Qg4 $1 $19 {[%cal Rg4h3]} 57. Ne7+ Kf7 58. Qxg4 Nxg4 59. Nxc6 {[%mdl 4096] Endgame KN-KN} g2 60. b4 g1=Q 61. a5 f5 62. Kb6 fxe4 63. a6 e3 64. a7 e2 65. a8=Q e1=Q 66. Qd8 Nf6 67. Qe7+ Kg8 68. Qe6+ Kh7 69. Qf5+ Qg6 {Black mates.} 70. Qh3+ Nh5 71. b5 Qeg3 72. Qd7 Nf6 73. Qd8 e4 74. Ne7 Nd5+ {[%mdl 64] Discovered Attack (Double check)} 75. Kb7 Nxe7 76. Qxe7 Qb3 77. b6 Qgf7 78. Qc7 e3 79. c6 e2 80. Qxf7 Qxf7+ 81. c7 e1=Q 82. Kb8 Qa5 83. Kb7 g5 84. Kc6 Qad5# {What a bad dream for White.  Weighted Error Value: White=0.58/Black=0.27} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.13"]
[White "Alberto, Manuel"]
[Black "Joelson, Ricardo"]
[Result "0-1"]
[ECO "C43"]
[WhiteElo "2167"]
[BlackElo "2017"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,-5,43,60,45,8,45,45,86,2,12,-38,-35,-38,-15,-616,-599,-665,-661,-660,-659,-694,-691,-717,-712,-720,-717,-744,-645,-656,-663,-651,-643,-644,-637,-650,-618,-623,-615,-786,-576,-639,-575,-651,-646,-640,-640,-612,-576,-758,-761,-804,-805,-859,-795,-788,-795,-2606,-2282]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Be6 (5... Nc5 {looks sharper.} 6. O-O Be7 7. Be3 Nxd3 8. cxd3 O-O) 6. Bxe4 {C43: Petroff Defence: 3 d4.} dxe4 7. Qxd8+ Kxd8 8. Ng5 {[#] White is slightly better.} Kd7 $146 ({Predecessor:} 8... Nc6 9. Nxe6+ fxe6 10. Bg5+ Be7 11. Bxe7+ Kxe7 12. Nc3 Nxe5 13. Nxe4 Nc4 14. O-O-O Nd6 {1-0 (55) Baum,J (1842)-Mechlinski,J (1753) Prague 2016}) 9. Nxe4 (9. O-O $16) 9... Nc6 $11 {[%cal Bb8c6,Bc6d4,Bd4c2][%mdl 32]} 10. f4 Nd4 11. Kd1 Rd8 {...Kc8 is the strong threat.} (11... Bg4+ {is more complex.} 12. Kd2 Bf5 13. c3 Nc2 14. Kxc2 Bxe4+ 15. Kb3 a5) 12. Nbd2 $2 {[%mdl 8192] This costs White the game.} (12. c3 $11 Nf5 13. g3) 12... Bg4+ $19 {Black is clearly winning.} 13. Ke1 Nxc2+ {[%mdl 64] [#] Double Attack} 14. Kf2 Nxa1 15. Ng5 Ke8 16. Nde4 h6 17. Nf3 Nc2 18. Bd2 Nd4 19. Be3 Nxf3 20. gxf3 Bf5 21. Ng3 Be6 22. Rc1 c6 23. a3 g6 24. Bxa7 Be7 25. Ke3 Bf5 26. Bb6 Rd3+ 27. Ke2 Rb3 {[%mdl 64] [#] Double Attack} 28. Bd4 h5 29. e6 Rg8 30. exf7+ Kxf7 31. Bc3 h4 32. Ne4 Re8 33. Ng5+ Bxg5+ {Weighted Error Value: White=0.64/Black=0.18} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.14"]
[White "Gohil, Mehul"]
[Black "Simpson, Michael M"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1991"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,66,62,54,63,63,62,71,60,52,81,65,71,85,119,90,148,123,126,122,184,155,202,202,308,152,643,635,1007,997,1002,964,1150,1112,1192,714,1377,1095,1154,738,1812,1775,2600,2386,2053,2086,29989,29990,29991,29992,29996,29997,29997,29998]} 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. b4 {D08: Albin Counter Gambit.} Ng6 7. Bb2 Ncxe5 8. Nxe5 {White is slightly better.} Nxe5 9. Bxd4 Nxc4 10. e3 Be6 11. Qc2 Nb6 12. Bd3 {[#]} Qg5 $146 (12... Be7 $142) ({Predecessor:} 12... Be7 13. Nd2 Bf6 14. Bxf6 Qxf6 15. O-O Qe7 16. Rac1 Rd8 17. Nf3 h6 18. Nd4 c6 {1-0 (25) Jodorcovsky Werjivker,P (2258)-Vargas,G (2111) Asuncion 2017}) 13. f4 ({But not} 13. Qxc7 $6 Rc8 $11) 13... Qh4+ 14. g3 Qd8 (14... Qe7 $16 {was necessary.}) 15. Nc3 c6 16. O-O Qd7 (16... Bd7 $142 17. Bxh7 Qe7) 17. Rfd1 ({Don't play} 17. Bxh7 Bh3 $18) (17. f5 $18 {is more deadly.} Bc4 18. Bxc4 Nxc4 19. Rad1) 17... Nd5 $2 {This costs Black the game.} (17... Bg4 $16) 18. f5 $18 O-O-O 19. fxe6 fxe6 20. Nxd5 Qxd5 21. Be4 Qg5 22. Rac1 {[#] Strongly threatening Bxc6!} Bd6 23. Bxa7 {Bxc6! is the strong threat.} Bc7 24. Bd4 e5 25. Bc5 h5 26. Rxd8+ Rxd8 27. b5 {[%cal Bb4b5,Bb5c6,Bc6b7][%mdl 32]} h4 28. bxc6 {White mates.} hxg3 29. cxb7+ Kb8 {[#]} 30. Ba7+ $1 {[%mdl 64] Discovered Attack, Decoy} Kxa7 31. Qa4+ {Weighted Error Value: White=0.21/Black=0.98} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.15"]
[White "Hamzaoui, Khalil"]
[Black "Ndegwa, Jackson Kamau"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "1883"]
[BlackElo "2001"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,76,29,35,15,53,31,76,78,74,75,69,69,75,82,87,85,107,105,120,100,103,104,116,105,95,97,143,155,190,187,216,240,246,257,277,258,285,37,50,55,137,32,435,435,590,590,5373,731,29985,29986,29989,29990,29993,29987,29998,29999,29999]} 1. d4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 Bf5 5. O-O e6 6. c4 Nf6 7. Nc3 Be7 8. cxd5 exd5 9. dxc5 Bxc5 10. Na4 Be7 11. Be3 O-O 12. Bc5 {[#] D34: Tarrasch Defence: 6 g3 Nf6 7 Bg2 Be7.} Nb4 $146 ({Predecessor:} 12... Rc8 13. Rc1 Re8 14. Re1 h6 15. Bxe7 Qxe7 16. Nc3 Red8 17. Qa4 Ne4 18. Nd4 Nxc3 19. Rxc3 Nxd4 20. Rxc8 Rxc8 21. Qxd4 {0-1 (50) Nill,O (2048)-Blum,G (2130) Erlangen 1997}) 13. a3 Bc2 14. Qd2 {White is better.} Bxa4 15. axb4 Bc6 16. Nd4 Bxc5 17. bxc5 Ne4 18. Qc2 Qe7 19. b4 a6 20. Nxc6 bxc6 21. Bxe4 dxe4 22. e3 Rfb8 23. Qc4 Rb5 24. Rfd1 Kf8 25. Rd4 f5 26. Rad1 Rb7 27. Rd6 Rc7 28. Re6 Qf7 {[#]} 29. Rdd6 $2 (29. Qxa6 $1 $18 {[%mdl 512]} Qxe6 (29... Rxa6 30. Rd8+) 30. Qxa8+ Rc8 31. Qb7) 29... Re7 $1 $14 {Strongly threatening ...Rae8.} 30. g4 $1 $36 {[%mdl 2048] Black is under pressure.} (30. Rxc6 $2 Rae8 $19) 30... a5 (30... Rxe6 $14 31. Qxe6 (31. Rxe6 g6 $11) 31... Qxe6 32. Rxe6 a5 33. Rxc6 a4) 31. bxa5 ({Reject} 31. Rxc6 $6 axb4 32. gxf5 Qxf5 $11) ({White has to play} 31. gxf5 $16 {Threatens to win with Qxe4.} Qxf5 32. Rxe7 Kxe7 33. Rd4 (33. Rxc6 Qg4+ 34. Kh1 Qf3+ 35. Kg1 Qg4+ 36. Kh1 Qf3+ 37. Kg1 Qg4+ $11) 33... Qg4+ 34. Kf1) 31... Rb8 $2 {[%mdl 8192] Loses the game.} ({Black should try} 31... Rxe6 $14 32. Rxe6 (32. Qxe6 Qxe6 33. Rxe6 fxg4 $11) 32... Rxa5) 32. a6 $18 h5 33. g5 h4 {[#] And now ...h3 would win.} 34. g6 Qg8 35. a7 {White mates.} Rxa7 36. Qd4 Raa8 37. Qe5 Qh8 38. Qxf5+ Kg8 39. Qf7# {Weighted Error Value: White=0.21/Black=0.62} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.16"]
[White "Fernandes, Avelino"]
[Black "Oliveira, Luciano"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1887"]
[BlackElo "2115"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,97,-8,25,16,14,-8,10,-18,-14,-15,-16,-21,-12,-24,-8,-31,-20,-33,-41,-28,-26,-54,-38,-35,-18,0,-12,-37,-13,-68,-24,-63,-57,-76,-25,-173,-173,-139,47,0,0,0,0,0,60,54,84,89,120,123,195,200,188,188,620,612,654,656,649,649,622,620,672,662,936,910,1128,1095,1304,1117,1938,1799,1649,1389,4866,4146,29978,29979,29985,29986,29988,29989,29989,29990,29990,29991,29992,29993,29998,29999]} 1. e4 c5 2. Bc4 e6 3. Nc3 Nc6 4. Nf3 Nf6 5. O-O d6 6. a3 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Be7 7. Re1 a6 8. d3 {The position is equal.} O-O 9. Ba2 b5 10. Ne2 Bb7 11. Nf4 {[#]} Qc7 $146 ({Predecessor:} 11... Qd7 12. Ng5 Nd8 13. Nh5 g6 14. Nxf6+ Bxf6 15. Qf3 Qe7 16. Qg3 Kg7 17. h4 h6 {0-1 (50) McDonald,A (1469)-MacQueen,A (1592) Oban 2006}) 12. Bxe6 fxe6 13. Nxe6 Qd7 14. Nxf8 Rxf8 15. h3 Nh5 16. c3 Nf4 17. Bxf4 Rxf4 18. Re3 Qe6 {[%mdl 1024] Black has compensation.} 19. Qc2 (19. b4 $11) 19... Bc8 20. Rae1 Qg6 {Hoping for ...Bxh3.} 21. Nh2 Ne5 ({Better is} 21... Rf8 $17) 22. a4 (22. d4 $11 Nc4 23. Rg3) 22... Bh4 $19 23. R1e2 Bg5 $2 (23... c4 $1 $17 24. d4 Nd3 25. Rxd3 cxd3 26. Qxd3 bxa4 27. Qc4+ Be6 28. Qxa4 Bxh3) 24. Rg3 Qh5 25. axb5 axb5 26. d4 Nc4 ({Black should play} 26... Ng6 $1 $11) 27. Nf3 Be7 {[#]} 28. b3 $1 {[%cal Rb3c4]} Nb6 29. e5 Qf7 (29... Nd7 $16) 30. exd6 $18 Bxd6 {[#]} 31. Ng5 $1 $36 {[%mdl 2048] Keeping Black busy.} Qg6 (31... Qf5) 32. Ne4 Qf5 33. Nxd6 {[%mdl 64] Discovered Attack} Qxc2 34. Rxc2 cxd4 35. cxd4 Be6 36. Nxb5 Nd5 37. Nc7 Nxc7 38. Rxc7 {[%mdl 4096] Endgame KRR-KRB} g6 39. Rd3 Rf8 40. d5 Bf5 41. Rd4 Rb8 42. b4 h5 43. g4 {White mates.} hxg4 44. hxg4 Bb1 45. d6 Rd8 46. b5 Kf8 47. b6 Ke8 48. b7 Rxd6 49. b8=Q+ {[%mdl 64] Double Attack. Never resign too early!  Weighted Error Value: White=0.22/Black=0.72} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.17"]
[White "Abdelazeez, Mohamed Abdalla"]
[Black "Khalema, Sechaba"]
[Result "1-0"]
[ECO "D53"]
[WhiteElo "2214"]
[BlackElo "1827"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,85,30,36,12,17,8,16,-15,7,12,50,64,99,97,101,101,109,100,106,83,93,79,155,152,152,137,147,107,220,206,193,49,52,32,17,25,15,0,90,90,90,95,89,24,154,137,145,127,118,90,304,304,301,286,267,156,155,90,155,141,251,262,203,179,189,189,200,200,200,200,408,391,341,297,12837,12041]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 a6 6. e3 Nbd7 7. a3 {D53: Queen's Gambit Declined: 4 Bg5 Be7: Early deviations.} dxc4 8. Bxc4 b5 9. Bd3 {The position is equal.} Bb7 10. b4 {[#]} Nb6 $146 ({Predecessor:} 10... O-O 11. Rc1 Rc8 12. h3 Nd5 13. Bxe7 Qxe7 14. Ne4 N7f6 15. Nc5 c6 16. Ne5 Qc7 {1-0 (80) Mongey,A (1652)-Krestinine,N (1403) Montigny le Bretonneux 2012}) 11. O-O Nfd5 12. Bxe7 Qxe7 13. Ne4 Nd7 14. Rc1 O-O 15. Qc2 g6 16. Ne5 Rfc8 {[#]} (16... Nxe5 $142 17. dxe5 a5) 17. Nxd7 $1 $16 Qxd7 18. Nc5 Qc6 19. Be4 Qb6 (19... a5 $16) 20. h4 a5 21. Nxb7 (21. h5 $18) 21... Qxb7 $14 22. h5 {[%cal Rh5g6]} axb4 23. axb4 {[%cal Rh5g6]} c6 24. Qc5 Qe7 (24... Kg7 $11) 25. Bxd5 $16 Qxc5 26. Rxc5 cxd5 {[%mdl 4096] Endgame KRR-KRR} 27. Rfc1 (27. Rxb5 $16 gxh5 28. Rc5) 27... Rcb8 (27... Rxc5 $11 {keeps the balance.} 28. Rxc5 (28. dxc5 gxh5 29. c6 Kf8 $15) 28... gxh5) 28. h6 Kf8 29. Rc7 Re8 30. R1c5 (30. g4 {seems wilder.} g5 31. Kg2 Re7 32. R7c5 Rea7 33. Rxb5 Ke7 34. Rb6) 30... Rab8 $2 (30... Re7 $16) 31. g4 $18 g5 32. Kg2 Re7 33. Rc8+ (33. Kg3 $18) 33... Rxc8 $16 34. Rxc8+ {KR-KR} Re8 {[#]} 35. Rc7 Re7 (35... e5 $16 {keeps fighting.}) 36. Rc5 $18 f6 37. Kg3 Kf7 38. Rxb5 Kg6 39. Rb8 Kxh6 40. b5 {[%cal Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Kg7 $2 (40... e5 {is a better defense.} 41. dxe5 fxe5) 41. b6 Rd7 42. Rc8 {Threatens to win with Rc7.} ({Don't play} 42. b7 Kh6 $18) 42... Rd6 $2 (42... Kg6 43. Rb8 f5) 43. b7 {Weighted Error Value: White=0.19/Black=0.42} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.18"]
[White "Vermaak, Ashley Christopher"]
[Black "Njoroge Martin"]
[Result "1-0"]
[ECO "A72"]
[WhiteElo "1751"]
[BlackElo "1965"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,93,42,33,29,31,48,18,13,0,53,55,42,40,40,50,56,-16,63,0,16,16,5,-58,-70,-29,-27,-113,0,12,204,196,197,196,188,163,169,168,249,41,210,199,294,292,569,182,504,502,866,852,810,686,718,620,696,696,1154,1047,2297,2314,2260,1057,5230,5230,29940,6199,29963,29964,29964,29965,29965,29966,29967,29966,29989,29966,29962,29968,29969,6089]} 1. d4 Nf6 2. c4 g6 3. Nc3 c5 4. d5 e6 5. Nf3 exd5 6. cxd5 d6 7. Nd2 Bg7 8. e4 O-O 9. Be2 a6 {A72: Modern Benoni: Classical: Lines with Bg5.} 10. a4 Nbd7 11. Nc4 Nb6 {[#] The position is equal.} 12. Nd2 $146 ({Predecessor:} 12. Ne3 Bd7 13. O-O Re8 14. Qc2 Rb8 15. Re1 Nc8 16. a5 Na7 17. Nc4 Nb5 18. Nxb5 Bxb5 19. f3 Nh5 20. g3 Bxc4 21. Bxc4 f5 22. Kg2 Bd4 23. Bd2 fxe4 24. Rxe4 Rxe4 25. Qxe4 Bxb2 {0-1 (52) Palacios Perez,M (2151)-Hossain,E (2452) Batumi 2018}) 12... Bd7 (12... Nbd7 $11) 13. a5 Nc8 14. Nc4 Bb5 15. O-O Re8 16. Qc2 (16. f3 $14) 16... Na7 (16... b6 $11) 17. Bf4 (17. f3 {is interesting.} Bxc4 18. Bxc4 Nd7 19. Bf4 Bd4+ 20. Kh1) 17... Bxc4 18. Bxc4 Nb5 $1 {[%cal Rb5c3]} 19. Bxb5 (19. Rfe1 $11) 19... axb5 $15 20. Nxb5 Rxe4 21. Bg3 (21. Bxd6 $11 {keeps the balance.} Rb4 22. Nc7) 21... Rb4 (21... Bf8 $17 22. Ra3 Rb4) 22. Nxd6 $11 Nxd5 $2 (22... Rxa5 $11 {and Black is okay.} 23. Rxa5 Qxa5) 23. Qxc5 $18 Rd4 24. Nxb7 {[%cal Bd6b7,Bb7c5,Bc5b3][%mdl 32]} Qf6 25. a6 Nf4 26. Bxf4 Rxf4 (26... Qxf4 {was called for.} 27. Qc6 Qe4 28. Qxe4 Rxe4) 27. Qd6 $2 (27. Nd6 $18 {Hoping for Qc6.} Qxb2 28. Qd5) 27... Qf5 $2 (27... Bf8 $14 28. Qc7 Rb4) 28. Ra5 Qe4 (28... Qf6 $142 29. Qc7 Re4) 29. Nc5 Qc4 (29... Qd4 {was necessary.} 30. Qc6 Qd8) 30. Ra4 $2 (30. Qc6 Rf8 31. Ra4 (31. a7 Rxf2 32. Kxf2 Qf4+ {[%mdl 64] Double Attack} 33. Ke2 Qc4+ 34. Kf2 Qf4+ {[%mdl 64] Double Attack} 35. Ke2 Qc4+ 36. Kf2 $11) 31... Qxc5 {[%mdl 64] Remove Defender} 32. Qxc5 Rxa4 33. Qc6) 30... Rf6 $2 {[#]} (30... Qxa4 {is a better chance.} 31. Nxa4 Rxa4) 31. Qxf6 $3 {[%mdl 512]} Qxf1+ (31... Qxa4 $142 32. Qxg7+ (32. Nxa4 Bxf6 33. Rb1 Rxa6 $14) 32... Kxg7 33. Nxa4 Rxa6) 32. Kxf1 Bxf6 {[%mdl 4096] Endgame KRB-KRN} 33. b4 {[%cal Bb2b4,Bb4b5,Bb5b6][%mdl 32]} Bd4 34. Nb3 Bb6 35. b5 Ra7 36. Rc4 Kf8 37. Rc6 Bd8 38. Nc5 (38. Rc8 $142 Ke7 39. Nd4) 38... Ba5 39. b6 Re7 {[#]} 40. g3 (40. Ne6+ $142 $1 {[%mdl 512]} Rxe6 41. Rxe6 fxe6 42. a7 Bxb6 43. a8=Q+ Ke7 44. Qb7+ {[%mdl 64] Double Attack} Kf6 45. Qxb6) 40... Re1+ 41. Kg2 {White mates.} Bxb6 42. Rxb6 {KRN-KR} Ra1 43. Rb7 Kg7 44. a7 Kf6 45. Nd7+ Kf5 46. Nb6 Ke4 47. a8=Q {Weighted Error Value: White=0.48/Black=0.76} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.19"]
[White "Singe, Philip Mbawala"]
[Black "Strovsky, Mikhail"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1857"]
[BlackElo "2164"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,123,-16,4,-17,-13,-20,-22,-40,-29,-35,-36,-53,-27,-50,-44,-68,-55,-69,-67,-79,-50,-43,-43,-56,-60,-53,-58,-55,-43,-43,-44,-80,-77,-74,-24,-31,-29,-339,-346,-344,-338,-331,-313,-391,-362,-369,-366,-362,-363,-364,-356,-359,-351,-400,-394,-400,-392,-431,-436,-443,-436,-439,-392,-480,-472,-481,-474,-489,-480,-658,-639,-772,-768,-776,-722,-752,-716,-834,-833,-869,-864,-829,-817,-786,-737,-1111,-1022,-1990,-1889,-1816,-1270,-5505,-4926,-29985,-29986,-29987,-29988,-29989,-29990,-29991,-29988,-29992,-29993,-29996,-29993,-29993,-29993,-29993,-29970,-29982,-29964,-29998,-29999,-29999]} 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 5. d4 O-O 6. Nbd2 b6 7. Re1 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bb7 8. c3 Nbd7 9. Qc2 {The position is equal.} c5 10. e3 Rc8 {[#]} 11. a4 $146 ({Predecessor:} 11. Qd1 Ne4 12. Nxe4 dxe4 13. Nd2 Nf6 14. Bf1 Re8 15. Nc4 Bd6 16. b3 e5 17. Nxd6 Qxd6 18. dxc5 Qxd1 19. Rxd1 Rxc5 {1-0 (40) Coleman,P (109)-Karpe,D (72) Llandudno 2017}) 11... Re8 12. Qb3 Qc7 13. a5 c4 14. axb6 axb6 ({Worse is} 14... cxb3 15. bxc7 a6 16. Nxb3 $16) ({Reject} 14... Qxb6 15. Qxb6 axb6 16. Ra7 $11) 15. Qc2 Ra8 16. Rxa8 Rxa8 17. e4 dxe4 18. Ng5 {[%cal Rd2e4]} e3 $36 {[%mdl 2048] Black has some pressure.} 19. fxe3 Bxg2 20. Kxg2 h6 21. Ngf3 b5 22. e4 b4 (22... Ra2 {looks sharper.} 23. h3 Qc6 24. Nb1 Qa6 25. Nbd2 e5) 23. cxb4 Bxb4 24. Qxc4 $2 {[%mdl 8192] [#] This costs White the game.} (24. Re2 $11 {and White has nothing to worry.}) 24... Qxc4 $19 25. Nxc4 Bxe1 26. Nxe1 Nxe4 27. Nd2 Nxd2 28. Bxd2 {[%mdl 4096] Endgame KRN-KBN} Nb6 29. Kf3 Nd5 30. Ke4 Kf8 31. Kd3 Ke7 32. Bc3 Ra1 33. Bd2 Kd6 34. Kc2 {[#]} Ne3+ $1 {[%mdl 512]} 35. Kd3 Nf1 36. Bb4+ Kc6 37. Nc2 Rb1 38. Bf8 Nxh2 39. Bxg7 Ng4 40. Na3 Rg1 41. Bf8 Rxg3+ 42. Ke4 f5+ 43. Kf4 Rd3 44. Nc2 Rd2 45. Nb4+ Kb5 46. d5 Rd4+ 47. Kg3 exd5 48. Na2 Kc4 49. Bg7 Rd2 50. Kf4 Rf2+ 51. Kg3 d4 52. Nc1 Rxb2 {Black mates.} 53. Kf3 Rc2 54. Ne2 d3 55. Nd4 Rf2+ 56. Kg3 d2 57. Nc2 Kd3 58. Nb4+ Ke2 59. Na2 d1=N 60. Nb4 Rf3+ 61. Kg2 Nde3+ 62. Kg1 Rf1# {Weighted Error Value: White=0.49/Black=0.07} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.20"]
[White "Libe, Sofonea"]
[Black "Kamara, Ansumana"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1509"]
[BlackElo "1899"]
[Annotator "NA RC"]
[PlyCount "186"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. c4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:07]} 2. g3 {[%emt 0:00:08]} g6 {[%emt 0:00:03]} 3. Bg2 {[%emt 0:00:03]} Bg7 {[%emt 0:00:02]} 4. Nc3 {[%emt 0:00:03]} c6 {[%emt 0:00:03]} 5. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:06]} 6. Nge2 {[%emt 0:00:06]} d6 {[%emt 0:00:06]} 7. d3 {[%emt 0:00:07]} Nbd7 {[%emt 0:00:04]} 8. Be3 {[%emt 0:00:02]} Nb6 {[%emt 0:00:04]} 9. h3 {[%emt 0:00:07]} O-O {[%emt 0:00:24]} 10. a4 {[%emt 0:00:03]} Nbd7 {[%emt 0:00:36]} 11. O-O {[%emt 0:00:03]} b6 {[%emt 0:00:10]} 12. Qd2 {[%emt 0:00:10]} Qc7 {[%emt 0:00:09]} 13. Bh6 {[%emt 0:01:31]} Nc5 {[%emt 0:00:07]} 14. Nc1 {[%emt 0:00:42]} Be6 {[%emt 0:01:14]} 15. Bxg7 {[%emt 0:00:08]} Kxg7 {[%emt 0:00:06]} 16. b4 {[%emt 0:00:03]} Nb7 {[%emt 0:00:14]} 17. N1e2 {[%emt 0:00:23]} Qd7 {[%emt 0:00:10]} 18. Kh2 {[%emt 0:00:03]} Nh5 {[%emt 0:00:15]} 19. f4 {[%emt 0:00:06]} exf4 {[%emt 0:00:13]} 20. Nxf4 {[%emt 0:00:07]} Nxf4 {[%emt 0:00:03]} 21. Rxf4 {[%emt 0:00:05]} f5 {[%emt 0:00:05]} 22. Raf1 {[%emt 0:00:04]} Rf7 {[%emt 0:00:29]} 23. b5 {[%emt 0:00:21]} c5 {[%emt 0:00:42]} 24. exf5 {[%emt 0:00:22]} Bxf5 {[%emt 0:00:11]} 25. Nd5 {[%emt 0:00:14]} Raf8 {[%emt 0:00:11]} 26. Qc3+ {[%emt 0:01:10]} Kg8 {[%emt 0:00:10]} 27. g4 {[%emt 0:00:12]} Be6 {[%emt 0:01:31]} 28. Nf6+ {[%emt 0:00:25]} Rxf6 {[%emt 0:00:07]} 29. Rxf6 {[%emt 0:00:02]} Re8 {[%emt 0:00:42]} 30. Bc6 {[%emt 0:01:13] Skewer} Qe7 {[%emt 0:00:26]} 31. Bxe8 {[%emt 0:00:07]} Qxe8 {[%emt 0:00:06]} 32. Qd2 {[%emt 0:00:25]} Nd8 {[%emt 0:00:16]} 33. Qe3 {[%emt 0:03:06]} Qd7 {[%emt 0:01:23]} 34. Qf4 {[%emt 0:04:30]} Kg7 {[%emt 0:03:32]} 35. d4 {[%emt 0:00:46]} Bxc4 {[%emt 0:01:12]} 36. Rxd6 {[%emt 0:00:10]} Qe7 {[%emt 0:00:12]} 37. Rf3 {[%emt 0:01:24]} Nf7 {[%emt 0:04:05]} 38. Re3 {[%emt 0:01:18]} Qxd6 {[%emt 0:00:18]} 39. Qxd6 {[%emt 0:00:15]} Nxd6 {[%emt 0:00:05]} 40. dxc5 {[%emt 0:00:05]} bxc5 {[%emt 0:00:05]} 41. Re7+ {[%emt 0:00:05]} Bf7 $2 {[%emt 0:00:10]} (41... Kf6 42. Rxa7 Bd5) 42. Rxa7 {[%emt 0:00:03]} c4 {[%emt 0:00:04]} 43. Rc7 {[%emt 0:00:06]} Kf6 {[%emt 0:00:16]} 44. b6 {[%emt 0:00:03]} Bd5 {[%emt 0:00:06]} 45. a5 {[%emt 0:00:04]} Bb7 {[%emt 0:00:10]} 46. Rxb7 {[%emt 0:00:54]} Nxb7 {[%emt 0:01:31]} 47. a6 {[%emt 0:00:05]} c3 {[%emt 0:00:03]} 48. axb7 {[%emt 0:00:05]} c2 {[%emt 0:00:03]} 49. b8=Q {[%emt 0:00:09]} c1=Q {[%emt 0:00:05]} 50. Qd6+ {[%emt 0:00:04]} Kg5 {[%emt 0:00:24]} 51. Qe7+ {[%emt 0:00:12]} Kh6 {[%emt 0:00:05]} 52. g5+ {[%emt 0:00:26]} (52. b7 $142 Qf4+ 53. Kg2 Qb8 54. Kf3 Qg8 55. Qe3+ g5 56. Qb6+ Kg7 57. Qb2+ Kg6 58. b8=Q) 52... Kh5 {[%emt 0:00:07]} 53. Qxh7+ {[%emt 0:00:12]} Kxg5 {[%emt 0:00:03]} 54. Qe7+ {[%emt 0:00:04]} Kh5 {[%emt 0:00:07]} 55. Qe5+ {[%emt 0:00:53]} Kh6 {[%emt 0:00:16]} 56. Qd4 {[%emt 0:00:49]} Qc2+ {[%emt 0:00:37]} 57. Kg3 {[%emt 0:00:10]} Qb3+ {[%emt 0:00:13]} 58. Kf2 {[%emt 0:00:26]} Qc2+ {[%emt 0:00:13]} 59. Kf3 {[%emt 0:00:07]} g5 {[%emt 0:00:35]} 60. Qf6+ {[%emt 0:00:28]} Kh5 {[%emt 0:00:12]} 61. Qf7+ {[%emt 0:00:23]} Kh4 {[%emt 0:00:34]} 62. Qc7 {[%emt 0:01:41]} Qb3+ {[%emt 0:00:18]} 63. Ke4 {[%emt 0:00:05]} Qe6+ {[%emt 0:01:17]} 64. Kd4 {[%emt 0:00:13]} Qf6+ {[%emt 0:00:10]} 65. Kc5 {[%emt 0:00:12]} Qf2+ {[%emt 0:00:47]} 66. Kc6 {[%emt 0:00:25]} Qf3+ {[%emt 0:00:11]} 67. Kb5 {[%emt 0:00:05]} Qb3+ {[%emt 0:00:13]} 68. Ka6 {[%emt 0:00:10]} Qa4+ {[%emt 0:00:07]} 69. Kb7 {[%emt 0:00:08]} Kxh3 {[%emt 0:00:06]} 70. Kb8 {[%emt 0:01:01]} g4 {[%emt 0:00:29]} 71. b7 {[%emt 0:00:12]} g3 {[%emt 0:00:26]} 72. Qh7+ {[%emt 0:00:11]} Kg4 {[%emt 0:00:18]} 73. Kc8 {[%emt 0:00:14]} Qe8+ {[%emt 0:00:43]} 74. Kc7 {[%emt 0:00:15]} Qe5+ {[%emt 0:00:07]} 75. Kc8 {[%emt 0:00:25]} Qe8+ {[%emt 0:00:31]} 76. Kc7 {[%emt 0:00:12]} Qe5+ {[%emt 0:00:08]} 77. Kb6 {[%emt 0:00:23]} g2 {[%emt 0:01:33]} 78. Qg8+ {[%emt 0:00:26]} Qg5 {[%emt 0:00:38]} 79. b8=Q {[%emt 0:00:33]} g1=Q+ {[%emt 0:00:21]} 80. Ka6 {[%emt 0:01:14]} Qa1+ {[%emt 0:00:13]} 81. Kb7 {[%emt 0:00:13]} Qb2+ {[%emt 0:00:07]} 82. Kc6 {[%emt 0:00:22]} Qc3+ {[%emt 0:00:08]} 83. Kd6 {[%emt 0:00:42]} Qd4+ {[%emt 0:01:01]} 84. Kc7 {[%emt 0:00:22]} Qdc5+ {[%emt 0:00:42]} 85. Kb7 {[%emt 0:00:23]} Qb5+ {[%emt 0:00:24]} 86. Kc7 {[%emt 0:00:09]} Qa5+ {[%emt 0:00:21]} 87. Kb7 {[%emt 0:00:17]} Qab5+ {[%emt 0:00:18]} 88. Kc7 {[%emt 0:00:04]} Qbc5+ {[%emt 0:00:11]} 89. Kb7 {[%emt 0:00:04]} Qce7+ {[%emt 0:00:06]} 90. Ka8 {[%emt 0:00:53]} Qe4+ {[%emt 0:00:21]} 91. Ka7 $11 {[%emt 0:00:08]} Qd4+ {[%emt 0:00:09]} 92. Kb7 {[%emt 0:00:10]} Qb4+ {[%emt 0:00:05]} 93. Kc7 {[%emt 0:00:02]} Qbc5+ {[%emt 0:00:04]} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.21"]
[White "Monaheng Motlomelo"]
[Black "Bongo Akanga Ndjila, Barthelemy"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1538"]
[BlackElo "1803"]
[Annotator "NA RC"]
[PlyCount "66"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} g6 {[%emt 0:00:23]} 2. Nf3 {[%emt 0:00:25]} Bg7 {[%emt 0:00:02]} 3. d4 {[%emt 0:00:35]} c5 {[%emt 0:00:13]} 4. c3 {[%emt 0:00:40]} cxd4 {[%emt 0:00:23]} 5. cxd4 {[%emt 0:00:28]} d6 {[%emt 0:00:01]} 6. Bc4 {[%emt 0:00:32]} Nf6 {[%emt 0:00:23]} 7. Nc3 {[%emt 0:00:11]} O-O {[%emt 0:00:04]} 8. O-O {[%emt 0:00:17]} Nc6 {[%emt 0:00:33]} 9. h3 {[%emt 0:00:20]} Nxe4 {[%emt 0:00:42]} 10. Bxf7+ {[%emt 0:00:52]} Rxf7 {[%emt 0:00:04]} 11. Nxe4 {[%emt 0:00:06]} Rxf3 {[%emt 0:01:26]} 12. Qxf3 {[%emt 0:00:31]} Nxd4 {[%emt 0:00:02]} 13. Qd1 {[%emt 0:00:36]} Bf5 {[%emt 0:03:22]} 14. Be3 {[%emt 0:02:28]} Qb6 {[%emt 0:04:42]} 15. Ng3 {[%emt 0:01:09]} Be6 {[%emt 0:00:16]} 16. Re1 {[%emt 0:00:29]} Bf7 {[%emt 0:02:40]} 17. Rb1 {[%emt 0:01:04]} Bxa2 {[%emt 0:00:10]} 18. Ra1 {[%emt 0:00:06]} Bb3 {[%emt 0:00:08]} 19. Bxd4 {[%emt 0:00:28]} Bxd4 {[%emt 0:00:07]} 20. Qe2 {[%emt 0:00:27]} Rf8 {[%emt 0:00:44]} 21. Nh1 {[%emt 0:00:15]} e5 {[%emt 0:00:18]} 22. Ra3 {[%emt 0:02:02]} d5 {[%emt 0:00:45]} 23. Rea1 {[%emt 0:01:31]} Bc4 {[%emt 0:00:11]} 24. Qd2 {[%emt 0:00:36]} Qxb2 {[%emt 0:00:17]} 25. Qxb2 {[%emt 0:01:28]} Bxb2 {[%emt 0:00:11]} 26. Rxa7 {[%emt 0:00:04]} Bxa1 {[%emt 0:00:04]} 27. Rxa1 {[%emt 0:00:04]} b5 {[%emt 0:00:01]} 28. f3 {[%emt 0:00:09]} b4 {[%emt 0:00:02]} 29. Nf2 {[%emt 0:00:12]} b3 {[%emt 0:00:03]} 30. Rb1 {[%emt 0:00:07]} Rb8 {[%emt 0:00:08]} 31. Rb2 {[%emt 0:00:07]} Ra8 {[%emt 0:00:04]} 32. Nd1 {[%emt 0:00:06]} Ra1 {[%emt 0:00:03]} 33. Rd2 {[%emt 0:00:18]} b2 {[%emt 0:00:37]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.22"]
[White "Ebersohn, Raymond Gerhard"]
[Black "Sang, Ricky"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1726"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,88,22,37,15,18,14,29,22,21,-15,0,-8,9,3,37,26,45,0,60,47,60,4,18,0,0,-11,25,28,147,151,147,163,166,169,165,162,201,138,143,136,136,115,208,160,160,116,146,75,73,-14,-22,-16,-11,-209,-136,-229,-166,-224,-170,-175,-161,-161,-51,-298,-37,-33,-44,-1931,-1727,-29982,-29983,-5509,-294,-29979,-552,-1483,-1383,-29989,-29990,-29990,-29984]} 1. e4 c5 2. Nc3 a6 3. f4 d6 4. g3 b5 5. Bg2 Bb7 6. d3 {B23: Closed Sicilian: Lines without g3.} e6 7. Nf3 Nf6 $1 {7...Nf6 is better than 7...Nd7.} 8. O-O {White has an edge.} Be7 9. h3 Qc7 10. g4 Nbd7 11. Ne2 {[#]} c4 $146 ({Predecessor:} 11... Rc8 12. Ng3 O-O 13. Qe2 c4 14. d4 c3 15. b3 Qb6 16. g5 Ne8 17. Be3 d5 {1-0 (31) Esipenko,A (1843)-Nikishin,S (2051) Sochi 2017}) 12. Ng3 Nc5 13. f5 e5 (13... O-O $11) 14. g5 $1 $14 {[%cal Rg5f6]} Nfd7 15. Nh5 (15. Be3 $14) 15... Rg8 $11 16. Nh4 O-O-O 17. b3 cxd3 18. cxd3 h6 (18... Kb8 $11 {remains equal.}) 19. f6 $16 gxf6 20. Nf5 Bf8 21. gxh6 Kb8 (21... Nxe4 $2 22. dxe4 Bxe4 23. Nhg3 $18) 22. Be3 Ne6 23. Rc1 Qa5 24. Rf2 Rh8 25. a4 Ng5 (25... b4 $16) 26. h4 Ne6 27. axb5 Qxb5 28. Bf1 (28. b4 $142) 28... Nd4 {...Nxf5 is the strong threat.} 29. Bxd4 ({Much weaker is} 29. Nxd4 exd4 30. Bxd4 Bxh6 $11) (29. Nhg3 $16) 29... exd4 $11 30. Rc4 (30. Nxd4 $2 Qb6 $19) 30... Bxh6 {aiming for ...Be3.} 31. Nxd6 $2 (31. Rxd4 $11 {and White is okay.} Rdg8+ 32. Rg2) 31... Rdg8+ 32. Bg2 (32. Kh1 $17 Qb6 33. Nf5) 32... Qb6 $19 33. Nxf7 Rh7 34. Nxh6 Rxh6 35. Rf5 {[#]} Ne5 ({Black should try} 35... Rhg6 $1 $19 {[%cal Rg6g2]} 36. Nf4 Rg3) 36. Rc2 ({White has to play} 36. Nxf6 $1 $15 Rxg2+ 37. Kxg2 Nxc4 38. Nd7+ Ka7 39. Nxb6 (39. bxc4 Qd8 $17) 39... Ne3+ {[%mdl 64] Double Attack} 40. Kg3 Nxd1 41. Nd7) 36... Bc8 $2 ({Better is} 36... Qd6 $19 {Hoping for ...Ng4.} 37. Qf1 Ng4) 37. Nxf6 $15 {[#]} Rxg2+ 38. Kxg2 $4 {[%mdl 8192]} (38. Rxg2 $15 Bxf5 39. Rg8+ Bc8 40. Qc1 (40. Rxc8+ $2 Kb7 $19) 40... Rg6+ 41. Rxg6 Nxg6 42. Qg5) 38... Bxf5 $19 39. exf5 Qxf6 {[%mdl 64] Double Attack} 40. Qc1 Rh8 $2 (40... Qxf5 {( -> ...Qg4+)} 41. Qg5 Rg6 {[%mdl 64] Pin}) 41. Qf4 (41. Qg5 $19 Qd6 42. Qg3 Qd5+ {[%mdl 64] Double Attack} 43. Kf2) 41... Rg8+ (41... Rxh4 $142 42. Qg3 Rg4 43. Qxg4 Nxg4 44. Kg1 Qxf5 45. Rd2 Ne3 46. Rb2 Qxd3 47. b4 Qf1+ 48. Kh2 Qd3 49. b5 Qc3 50. Ra2 axb5 51. Kg3 d3 52. Kf4 Qd4+ 53. Kf3 d2 54. Rxd2 Qxd2 55. Kf4 b4 56. Kg3 b3 57. Kf4 b2 58. Kg5 b1=Q 59. Kf6 Qf5+ 60. Kg7 Qdd7+ 61. Kh8 Qfh7#) 42. Kf1 Rg4 {[%mdl 64] Double Attack} 43. Qd2 Qxf5+ {[%mdl 64] Double Attack} 44. Qf2 Rf4 {Weighted Error Value: White=0.94/Black=0.65} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "7.23"]
[White "El Kouri, Abdallah lamine"]
[Black "Maazouzi, Youssef"]
[Result "1/2-1/2"]
[ECO "A45"]
[Annotator "NA RC"]
[PlyCount "112"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:03]} 2. Nc3 {[%emt 0:00:05]} e6 {[%emt 0:00:04]} 3. e4 {[%emt 0:00:03]} Bb4 {[%emt 0:00:13]} 4. Bd2 {[%emt 0:00:05]} Bxc3 {[%emt 0:00:21]} 5. Bxc3 {[%emt 0:00:07]} Nxe4 {[%emt 0:00:03]} 6. Bb4 {[%emt 0:00:20]} Nc6 {[%emt 0:00:21]} 7. Bd3 {[%emt 0:00:48]} Nxb4 {[%emt 0:00:53]} 8. Bxe4 {[%emt 0:00:06]} d5 {[%emt 0:00:19]} 9. Bf3 {[%emt 0:00:07]} O-O {[%emt 0:01:07]} 10. c3 {[%emt 0:00:07]} Nc6 {[%emt 0:00:04]} 11. Qd2 {[%emt 0:00:14]} Ne7 {[%emt 0:00:20]} 12. Ne2 {[%emt 0:00:06]} Nf5 {[%emt 0:00:14]} 13. O-O-O {[%emt 0:00:18]} Bd7 {[%emt 0:00:22]} 14. Ng3 {[%emt 0:00:29]} Nd6 {[%emt 0:01:18]} 15. Be2 {[%emt 0:00:16]} Bb5 {[%emt 0:00:10]} 16. Rde1 {[%emt 0:00:35]} Bxe2 {[%emt 0:00:16]} 17. Qxe2 {[%emt 0:00:14]} Nc4 {[%emt 0:00:15]} 18. Qg4 {[%emt 0:00:18]} g6 {[%emt 0:01:07]} 19. h4 {[%emt 0:00:18]} Qf6 {[%emt 0:00:28]} 20. h5 {[%emt 0:00:16]} Qxf2 {[%emt 0:00:15]} 21. Re2 {[%emt 0:00:37]} Qf6 {[%emt 0:01:23]} 22. h6 {[%emt 0:00:29]} Rae8 {[%emt 0:01:33]} 23. Rf1 {[%emt 0:00:06]} Qh8 {[%emt 0:00:40]} 24. Nh5 {[%emt 0:00:22]} f5 {[%emt 0:00:14]} 25. Qg5 {[%emt 0:00:30]} Nd6 {[%emt 0:00:33]} 26. Nf4 {[%emt 0:00:42]} Ne4 {[%emt 0:00:22]} 27. Qh4 {[%emt 0:00:35]} g5 {[%emt 0:00:33]} 28. Qh2 {[%emt 0:01:37]} gxf4 {[%emt 0:00:09]} 29. Qxf4 {[%emt 0:00:05]} Qf6 {[%emt 0:02:06]} 30. Re3 {[%emt 0:00:41]} Qg5 {[%emt 0:01:28]} 31. Rg3 {[%emt 0:03:17]} Qxg3 {[%emt 0:00:18]} 32. Kc2 {[%emt 0:03:41]} Qxf4 {[%emt 0:00:31]} 33. Rxf4 {[%emt 0:00:07]} Kh8 {[%emt 0:00:03]} 34. c4 {[%emt 0:00:11]} c6 {[%emt 0:00:10]} 35. c5 {[%emt 0:00:22]} Rg8 {[%emt 0:00:03]} 36. Kb3 {[%emt 0:00:47]} Rxg2 {[%emt 0:00:16]} 37. a4 {[%emt 0:00:05]} a6 {[%emt 0:00:11]} 38. Ka3 {[%emt 0:00:10]} Reg8 {[%emt 0:00:08]} 39. Rh4 {[%emt 0:00:13]} Rd2 {[%emt 0:00:20]} 40. Kb4 {[%emt 0:00:26]} Rxb2+ {[%emt 0:00:08]} 41. Ka5 {[%emt 0:00:04]} Rgg2 {[%emt 0:00:29]} 42. Rh3 {[%emt 0:00:21]} Ng5 {[%emt 0:00:58]} 43. Re3 {[%emt 0:00:43]} Rbe2 {[%emt 0:00:32]} 44. Rxe2 {[%emt 0:00:09]} Rxe2 {[%emt 0:00:04]} 45. Kb6 {[%emt 0:00:09]} Rb2+ {[%emt 0:00:11]} 46. Kc7 {[%emt 0:00:04]} f4 {[%emt 0:00:04]} 47. Kd6 {[%emt 0:00:05]} f3 {[%emt 0:00:07]} 48. a5 {[%emt 0:00:11]} f2 {[%emt 0:00:03]} 49. Ke5 {[%emt 0:00:02]} f1=Q {[%emt 0:00:10]} 50. Kd6 {[%emt 0:00:09]} Ne4+ {[%emt 0:00:57]} 51. Kxe6 {[%emt 0:00:08]} Qf6+ {[%emt 0:00:10]} 52. Kd7 {[%emt 0:00:07]} Qf7+ {[%emt 0:00:18]} 53. Kc8 {[%emt 0:00:13]} b5 {[%emt 0:00:29]} 54. axb6 {[%emt 0:00:06]} Rxb6 {[%emt 0:00:12]} 55. cxb6 {[%emt 0:00:03]} Nd6+ {[%emt 0:00:16]} 56. Kd8 {[%emt 0:00:13]} Qb7 {[%emt 0:01:16]} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.1"]
[White "Amin, Bassem"]
[Black "Bellahcene, Bilel"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2693"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,47,0,6,15,12,2,3,14,21,19,0,5,0,27,17,26,20,37,29,39,30,40,38,41,41,41,38,37,0,42,0,39,0]} 1. e4 e6 2. d3 c5 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. O-O Nge7 7. c3 O-O 8. Be3 (8. Re1 e5 9. a3 d6 10. b4 a6 11. Nbd2 Be6 12. Rb1 h6 13. Nf1 cxb4 14. axb4 d5 15. Ne3 d4 16. cxd4 exd4 17. Nc4 b5 18. Ncd2 a5 19. bxa5 Qxa5 20. h4 Rfd8 21. Nb3 Qb6 {0-1 (79) Amin,B (2707)-Bellahcene,B (2541) Hammamet 2019}) 8... b6 9. d4 cxd4 {A04: Unusual lines after 1 Nf3 and King's Indian Attack.} 10. cxd4 d5 11. e5 f6 {The position is equal.} 12. exf6 Bxf6 13. Nc3 Nf5 14. Qd2 Bd7 15. Rfe1 {[#]} Nxe3 $146 ({Predecessor:} 15... Rc8 16. Rad1 Qe7 17. Bf4 Qg7 18. Be5 Nxe5 19. Nxe5 Bxe5 20. Rxe5 Rc4 21. Rxd5 Bc6 {0-1 (48) Bologan,V (2574)-Yagupov,I (2357) Moscow 2019}) 16. Qxe3 Bg7 17. Rad1 Qf6 18. h4 Kh8 19. Ne2 Rae8 20. Nf4 Bh6 {[%cal Rh6f4]} 21. Ng5 Bg7 {[%cal Rc6d4]} 22. Nf3 Bh6 {[%cal Rh6f4]} 23. Ng5 (23. Nxd5 $5 Qg7 24. Nf4 $11) 23... Bg7 {[%cal Rc6d4]} 24. Nf3 {Weighted Error Value: White=0.08/Black=0.05} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.2"]
[White "Amdouni, Zoubaier"]
[Black "Adly, Ahmed"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2229"]
[BlackElo "2615"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,78,-6,-12,-41,-51,-96,-95,-157,-78,-145,-44,-50,-56,-69,-77,-125,-137,-134,-118,-133,-79,-120,-119,-150,-118,-118,-106,-123,-113,-123,-123,-116,-126,-149,-88,-357,-185,-264,-153,-194,-207,-198,-199,-239,-235,-243,-218,-499,-502,-497,-461,-452,-323,-473,-479,-512,-511,-858,-858,-918,-1081,-915,-998,-1010,-997]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. h4 h5 8. Nf4 Bh7 9. dxc5 {B12: Caro-Kann: Advance Variation.} hxg4 10. Be3 Nc6 {And now ...d4 would win.} 11. Bb5 {[#]} (11. Qxg4 $142 Bxc2 12. Nb5 Nxe5 13. Qg3) 11... Bf5 $146 (11... Nge7 $142 $1 12. Nfe2 (12. Qxg4 Bxc2 13. Qe2 Bf5 $17) 12... Nf5) ({Predecessor:} 11... Nge7 12. Qxg4 Bf5 13. Qd1 a6 14. Ba4 Qc7 15. Nd3 O-O-O 16. Bxc6 Nxc6 17. Bf4 Bxd3 18. Qxd3 Bxc5 {0-1 (51) Stieber,U (1755)-Galbraith,M (1587) Husum 2002}) 12. Qe2 {[#]} (12. Nfe2 $142) 12... a6 ({Don't play} 12... Rxh4 13. O-O-O $17) (12... g5 $1 $17 {[%cal Rg5f4]} 13. Nd3 gxh4) 13. Bxc6+ $15 bxc6 14. O-O-O Qa5 15. Rd4 Bxc5 16. Ra4 Bxe3+ 17. Qxe3 Qd8 ({Black should try} 17... Qc7 18. h5 Ne7) 18. Qc5 Ne7 19. Nfe2 Qb8 20. Rb4 {[#]} Qc7 21. Nd4 O-O 22. Nxf5 exf5 23. Re1 Rfb8 24. Rf4 Qa7 (24... f6 $142 25. Qd6 Qxd6 26. exd6 Ng6 {[%mdl 64] Double Attack} 27. Rxf5 Nxh4) 25. Qa3 $2 {[%mdl 8192] This costs White the game.} (25. Na4 $17 {was called for.}) 25... c5 (25... Ng6 $142 26. Rxf5 Nxh4) 26. e6 (26. Na4 {was worth a try.}) 26... f6 ({Black should play} 26... fxe6 $19 {White must now prevent ...d4.} 27. Rxe6 Qd7) 27. Ra4 a5 28. Ne2 Rb4 29. Nf4 c4 30. Rxb4 axb4 ({Less strong is} 30... Qxf2 31. Ng2 $11) 31. Qxb4 (31. Qxa7 {was the only chance.} Rxa7 32. Rd1) 31... Qxf2 $19 {[%mdl 64] Double Attack} 32. Qd2 Qxd2+ 33. Kxd2 Rxa2 {[%mdl 4096] Endgame KRN-KRN} 34. Kc3 (34. h5 $142) 34... g5 {Black is clearly winning.} 35. Nh5 gxh4 36. Nxf6+ (36. Kd4 $142) 36... Kg7 37. Nh5+ Kg6 38. Nf4+ Kg5 39. Ne2 g3 {Weighted Error Value: White=0.67/Black=0.28} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.3"]
[White "Silva, David"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2258"]
[BlackElo "2422"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,67,-25,-25,-14,-37,-12,-23,-24,-8,-13,-30,36,39,38,58,83,74,99,44,41,45,60,40,66,60,60,62,69,55,62,62,71,78,80,45,77,76,77,77,102,82,81,81,78,57,52,24,24,0,0,0,0,-18]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Nf3 c6 6. g3 Bd6 7. Bg2 O-O 8. O-O Re8 9. Qc2 Bg4 {D35: Queen's Gambit Declined: Exchange Variation.} 10. Nh4 {[#]} Bh5 $146 ({Predecessor:} 10... Qc8 11. Bg5 Be7 12. Qd2 Bh3 13. Rfe1 Bxg2 14. Kxg2 Qe6 15. f3 Bf8 16. e4 dxe4 17. Nxe4 Nxe4 18. Rxe4 {0-1 (41) Bollenbach,H (1721)-Schwetje,S (1889) Binz 2018}) 11. e4 dxe4 {Black has an edge.} 12. Nxe4 Be7 13. Nf5 Bg6 (13... Nxe4 $11 14. Bxe4 Bf8) 14. Nxe7+ $14 Qxe7 15. Nxf6+ Qxf6 16. Qb3 Re7 17. Bf4 ({White should play} 17. Bd2 $16) 17... Na6 18. Rfe1 Rae8 19. Re5 {Bg5 is the strong threat.} (19. Re3 {keeps more tension.} h6 20. Rae1 Rxe3 21. Bxe3 Re7 22. h4) 19... Rxe5 20. dxe5 Qe7 21. Be3 Qb4 22. Rd1 Qxb3 23. axb3 Bf5 24. Bxa7 g5 25. Bb6 h6 26. f4 Nb4 27. Rd6 Be6 28. Bc5 Nd5 29. Bxd5 cxd5 30. fxg5 hxg5 31. Be3 g4 32. Bg5 Kh7 33. Kf2 Rc8 34. Rd8 {Weighted Error Value: White=0.13/Black=0.13} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.4"]
[White "Bouzidi, Ahmed"]
[Black "Ortega Amarelle, Mariano"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2163"]
[BlackElo "2463"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,142,39,6,47,34,33,11,16,16,16,6,10,5,8,14,10,0,-11,-17,0,-20,10,-27,0,0,0,-7,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,137,58,93,60,73,70,62,71,72,59,127,54,76,68,93,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bf5 6. Ne5 c6 7. Bc4 e6 8. Bd2 Qb6 {B01: Scandinavian Defence.} (8... Nbd7 $5 {[%cal Rd7e5]}) 9. Qe2 $1 Nbd7 10. Nxd7 Kxd7 11. O-O-O Rd8 {[#]} 12. Na4 $146 ({Predecessor:} 12. h3 Kc8 13. g4 Bg6 14. f4 Bb4 15. Na4 Qa5 16. Nc5 Bxd2+ 17. Rxd2 Rhe8 18. a3 {1-0 (27) Tomazini,Z (2432)-Zvara,P (2375) Pardubice 2016}) 12... Qc7 13. Nc5+ Kc8 14. Nb3 Bd6 15. f3 h5 16. g3 Rhe8 17. Qf2 Nd5 18. Be2 Nb4 19. Bxb4 Bxb4 20. Bd3 Bxd3 21. Rxd3 Kb8 22. Rhd1 g6 23. Kb1 Rd7 24. c3 Be7 25. Nd2 Red8 26. Nc4 {With the idea Ne5.} Bf6 27. Qe3 Rd5 28. f4 a6 29. Qe2 c5 30. Ne3 R5d7 {[%cal Rc5d4]} 31. d5 exd5 32. Nxd5 Qc6 {[%cal Rd7d5]} 33. Nxf6 Rxd3 34. Rxd3 Rxd3 35. Qxd3 Qxf6 $11 {[%mdl 4096] Endgame KQ-KQ} 36. Kc2 Qe6 37. a4 (37. Qd8+ {is interesting.} Ka7 38. Qc7 Qd5 39. b3 Qg2+ 40. Kd3) 37... Ka7 38. b3 Qh3 39. Qe2 Qf5+ 40. Kb2 Qd5 41. Qe3 Kb8 42. Ka3 Qd6 43. Qe8+ {[%mdl 64] [#] Double Attack} Ka7 $1 44. Qxf7 c4+ 45. b4 Qd3 46. Qf6 b5 (46... Qc2 $5 47. Qd4+ $8 {[%mdl 64] Double Attack} Ka8 48. Qxc4 Qc1+ 49. Kb3 Qb1+ 50. Ka3 Qc1+ 51. Kb3 Qb1+ 52. Ka3 Qc1+ $11) 47. Qd4+ (47. a5 {keeps more tension.} Qe3 48. Qd4+ Qxd4 49. cxd4 Kb7 50. h3) 47... Qxd4 48. cxd4 {KP-KP} Kb6 49. axb5 axb5 50. h3 $1 {[#] Strongly threatening g4.} Kc6 {And now ...Kd5 would win.} 51. g4 $1 {[%cal Rg4g5]} hxg4 52. hxg4 Kd5 53. f5 $1 {[%cal Rf5g6]} gxf5 ({Inferior is} 53... Kxd4 54. fxg6 Ke3 55. g7 Kf4 56. g8=Q Ke5 57. g5 Ke4 58. g6) 54. gxf5 {K3P-KPP} Kd6 (54... Kxd4 55. f6 Ke5 56. f7 Kf4 57. f8=Q+ Ke4 58. Qc5 Kd3 59. Qxb5) (54... c3 $1 $11) 55. Kb2 $16 Kd5 56. Kc2 Kd6 ({Worse is} 56... Kxd4 57. f6 Ke4 58. f7 Kf5 59. f8=Q+ Ke6 60. Qe8+ Kf5 61. Qxb5+ Kf4 62. Qd5) 57. Kd2 Ke7 58. d5 $1 Kf6 59. d6 {Hoping for Kc2.} Kf7 60. Kc3 ({Better is} 60. Ke3 $16) 60... Kf6 $14 61. Kd4 {Threatens to win with Ke3.} Kf7 62. Ke5 (62. Ke3 $16) 62... c3 $11 {The position is equal.} 63. f6 c2 $1 {[%cal Rc2c1]} 64. d7 c1=Q {( -> ...Qd2!)} 65. d8=Q {KQ-KQ} Qe1+ 66. Kf5 {White threatens Qd7+ and mate.} Qe6+ 67. Kg5 {aiming for Qc7+.} Qe5+ 68. Kg4 Qe4+ 69. Kg5 {Qd7+ would kill now.} Qe5+ 70. Kg4 Qe4+ 71. Kg5 {Intending Qd7+ and mate.} Qe5+ {Weighted Error Value: White=0.05/Black=0.06} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.5"]
[White "Miguel, Sergio"]
[Black "Zaibi, Amir"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2377"]
[BlackElo "2381"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,45,20,32,-8,-19,-44,-35,-17,-25,-39,-45,-495,-495,-485,-485,-488,-475,-906,-892,-838,-725,-811,-757,-734,-731,-680,-642,-1205,-1156,-1131,-1106,-29985,-29986,-29986,-730,-29987,-29988,-29988]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. Qd2 Bg7 5. O-O-O O-O 6. h4 {A45: Trompowsky Attack.} c5 {Strongly threatening ...cxd4.} 7. dxc5 Qa5 8. Kb1 {Black is slightly better.} ({Don't blunder} 8. Nxd5 $2 Qxa2 9. Nxe7+ Kh8 $19) 8... Nc6 9. Nxd5 Qxc5 {[#] White must now prevent ...Rd8.} 10. f3 $146 {[%mdl 8192]} (10. e4 $15) ({Predecessor:} 10. Qe3 Qxe3 11. Nxf6+ Bxf6 12. Bxe3 Bf5 13. a3 Rfd8 14. Rxd8+ Rxd8 15. Kc1 Na5 16. Bg5 {0-1 (51) Keijzer,R (1852)-Pasko,P ICCF email 2006}) 10... Nxd5 $19 {[%mdl 64] Overworked Piece} 11. Qxd5 {[#]} Qb4 {[%csl Gg7,LRb2,LRf4][%cal Rb4b2]} 12. Bc1 Be6 13. Qd2 {[#]} (13. Qe4 $142 Rfd8 14. Qxb4 Bxa2+ 15. Ka1 Nxb4 16. Rd3) 13... Bxa2+ $1 {[%mdl 512]} 14. Kxa2 Qa4+ 15. Kb1 Nb4 16. Qxb4 Qxb4 17. e4 a5 {[%cal Ba7a5,Ba5a4,Ba4a3,Ba3a2][%mdl 32] ...a4 is the strong threat.} 18. Rd5 a4 {And now ...a3 would win.} 19. c3 Qb3 {( -> ...a3)} 20. Be2 a3 21. Bd1 a2+ 22. Ka1 {[#]} Qxc3 $1 {[%cal Rc3c1][%mdl 512]} 23. Ne2 {White got outplayed after the opening.  Weighted Error Value: White=1.56/Black=0.07} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.6"]
[White "Paiva, Donaldo"]
[Black "Wanyama, Harold"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2230"]
[BlackElo "2312"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,67,37,14,46,8,37,22,34,27,29,26,28,22,33,9,46,35,69,67,116,94,118,103,134,124,110,114,210,70,89,15,209,-11,-11,1,35,48,47,43,38,15,80,94,111,43,264,45,484,473,466,470,574,565]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. a4 Rb8 9. c3 d6 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} 10. h3 Bb7 11. d4 {aiming for axb5.} exd4 {The position is equal.} 12. cxd4 Nb4 13. Nc3 c5 14. axb5 axb5 {[#]} 15. d5 $146 ({Predecessor:} 15. e5 dxe5 16. dxe5 Qxd1 17. Bxd1 Ne8 18. Re3 Nc7 19. Ra7 c4 20. Bd2 Bc5 21. Rxb7 Rxb7 {0-1 (51) Solodovnichenko,Y (2519)-Laxman,R (2388) playchess.com INT 2005}) 15... c4 (15... Qb6 {with more complications.} 16. Be3 Rfe8 17. Qb1 Ra8 18. Ra3 Nd7) 16. Bc2 Nxc2 17. Qxc2 b4 18. Ne2 Rc8 19. Ned4 Nd7 20. Bf4 b3 21. Qc3 Re8 {[#]} (21... Qb6 $16 {was worth a try.}) 22. Qb4 (22. Nf5 $1 $18 {[%csl Gf5][%cal Rc3g7]} Bf6 23. Qb4) 22... Nc5 $14 23. Qxc4 (23. Ra7 $16) 23... Qb6 (23... Bf8 $11 {and Black stays safe.}) 24. Nc6 $2 (24. Nf5 $18) 24... Bxc6 $11 25. dxc6 Rxc6 26. Nd4 $36 {[%mdl 2048] White has good play.} Rcc8 {...Ne6 is the strong threat.} 27. Nf5 Bf8 28. Qd5 Re6 (28... Qc6 $11 {keeps the balance.} 29. Bxd6 Nxe4 30. Qxc6 Rxc6 31. Ne7+ Bxe7 32. Rxe4 Rxd6 33. Rxe7 Red8) 29. Kh1 $16 Qb4 {[%cal Rc5e4]} 30. Bd2 (30. Rec1 $16 {[%cal Rf5d6]} Rd8 31. f3) 30... Qb5 $2 (30... Qb7 $14) 31. Ra5 $2 (31. Nd4 $18 Qd7 32. Nxe6 fxe6 33. Qd4) 31... Qd3 {[%mdl 8192] [#]} (31... Qb8 $14) 32. Rxc5 $1 $18 {[%mdl 512] White is clearly winning.} Qxd5 33. Rxd5 Rc2 {[#]} 34. Nd4 $1 {Weighted Error Value: White=0.60/Black=0.76} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.7"]
[White "Beukes, Dante M"]
[Black "Seddaoui, Yamine"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2206"]
[BlackElo "2127"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,93,43,33,50,50,52,23,40,11,9,5,21,0,52,64,68,74,85,75,111,110,97,97,108,15,3,0,0,0,0,0,48,54,119,116,136,133,132,131,156,150,151,144,160,170,159,158,149,101,218,225,266,264,254,152,162,133,218,222,428,425,376,269,5408,5182,29975,29976,29973,29974,5787,5206,5057,5057,4678,2865,1500,1293,1170,1165,1138,1053]} 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O c6 7. a4 Qc7 8. Re1 h6 {C41: Philidor Defence.} 9. a5 Nf8 10. b3 Ng6 {[#] White has an edge.} 11. g3 $146 ({Predecessor:} 11. d5 O-O 12. h3 Bd7 13. Be3 Kh8 14. Nd2 c5 15. Bb5 Bxb5 16. Nxb5 Qd7 17. Qe2 {0-1 (32) Grosse,C (1874)-Koellner,C (2083) Nickenich 2018}) 11... Bg4 12. d5 O-O 13. Qd3 Rac8 (13... Qd7 $11) 14. Nd2 $14 cxd5 15. Nxd5 Nxd5 16. Bxd5 Qxc2 17. Qxc2 Rxc2 18. Nc4 Be6 19. Ne3 (19. Bxb7 $16 {Threatening Be3.} Bxc4 20. bxc4) 19... Rc7 $11 20. Ba3 Rfc8 21. h4 Nf8 22. Red1 g6 23. Bxe6 Nxe6 (23... fxe6 $14 24. Bxd6 Bxd6 25. Rxd6 Kf7) 24. Nd5 $16 Rd7 {[#]} 25. Bxd6 $1 {[%mdl 512]} Bxd6 26. Nf6+ {[%mdl 64] Double Attack} Kf8 {...Rdd8 is the strong threat.} 27. Nxd7+ Ke7 {[#]} 28. Nf6 {[%mdl 512]} Nd4 29. Nd5+ Ke6 30. Rab1 f5 31. Ne3 f4 (31... fxe4 $16 {was worth a try.} 32. b4 Rc3) 32. gxf4 $18 Ne2+ 33. Kf1 Nxf4 34. Nc4 (34. Rbc1 $18 Rxc1 35. Rxc1) 34... Be7 $16 35. Rb2 Rc6 (35... g5 $16) 36. Rbd2 $18 Bxh4 $2 (36... Rc7 37. Rd5 a6 38. Rxe5+ Kf7) 37. Rd7 Be7 38. Rxb7 a6 $2 (38... Bc5 39. Rd8 Bd4) 39. Rb6 Rxb6 40. axb6 {[%mdl 4096] Endgame KRN-KBN} Bc5 41. b7 Ba7 42. Rd6+ {White is clearly winning.} Ke7 43. Rxa6 Bb8 44. Ra8 Bc7 45. b8=Q Bxb8 46. Rxb8 h5 47. Nxe5 {Weighted Error Value: White=0.17/Black=0.51} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.8"]
[White "Simoes, Joao"]
[Black "Kayonde, Andrew"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2228"]
[BlackElo "2393"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,134,19,18,22,0,3,-2,-2,-2,-2,-1,-2,-11,-8,-15,0,-2,-5,-17,-7,-34,-23,-28,-38,-29,-24,-32,-26,-33,-27,-31,-23,-79,-51,-95,-52,-53,-63,-64,-64,-72,-28,-37,-29,-38,-27,-96,-96,-139,-133,-136,-125,-155,-155,-142,-106,-155,-155,-152,-151,-166,-179,-755,-747,-695,-370,-789,-777,-738,-681,-738,-579,-917,-917,-942,-732,-768,-743,-937,-955,-923,-815,-965,-960,-955,-941,-958,-942,-930,-935,-960,-933,-738,-689,-546,-917,-866,-797,-1517,-1493,-1444,-1448,-1286,-1295,-1723,-1622,-1558,-1521,-29958,-2753,-29975,-29976,-29976,-29977,-29982,-29983,-29983,-29984,-29985,-29986,-29988,-29988,-29990,-29991]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 a6 6. c5 Nbd7 7. b4 b6 {D45: Semi-Slav: 5 e3.} 8. Bd2 a5 9. a3 Be7 {The position is equal.} 10. Bd3 {[#]} O-O $146 ({Predecessor:} 10... Qc7 11. O-O O-O 12. Qc2 h6 13. Rfe1 Ng4 14. h3 Ngf6 15. Ne2 e5 16. dxe5 Nxe5 17. Nxe5 Qxe5 {0-1 (27) Buyanbadrakh,G-Unurzul,D (1488) Ulaanbaatar 2016}) 11. O-O Ba6 12. Bxa6 Rxa6 13. Qe2 Ra8 14. Qd3 Qc7 15. Rac1 Qb7 (15... Rfb8 {is interesting.} 16. Qc2 Ra7 17. h3 axb4 18. axb4 Rba8) 16. e4 axb4 17. axb4 dxe4 18. Nxe4 Nxe4 19. Qxe4 Nf6 20. Qc2 b5 21. Ra1 Nd5 22. Qb2 (22. h4 $11 {remains equal.}) 22... Bf6 23. g4 Rxa1 24. Rxa1 Ra8 25. g5 Bd8 26. Ne5 Ra6 27. Rxa6 Qxa6 28. Qb1 Bc7 29. Nd3 (29. Qe1 $11) 29... Qa3 $17 30. h4 {[#]} g6 $1 31. Kg2 Kg7 32. Qc2 Qa1 33. Be3 Kf8 34. Qe2 Qc3 35. Qd2 {intending Qxc3.} Qb3 36. Kf3 Ne7 37. Kg4 $2 (37. Ke2) 37... Qd5 $19 {[%cal Rd5g2] [#]} 38. f4 Qe4 39. Ne5 $2 (39. Kg3) 39... Nd5 40. Bg1 Bxe5 41. dxe5 Qxb4 42. Qxb4 Nxb4 {[%mdl 4096] Endgame KB-KN} 43. Kf3 Nd5 44. Ke4 Ke7 45. Bf2 Kd7 46. Be1 Kc7 47. Bd2 b4 48. Kd3 b3 49. Bc1 Kb7 50. Kc4 Ka6 51. Kxb3 Kb5 52. Kc2 Kxc5 53. Kd3 Kb5 (53... Kb4 $142 54. Bd2+ Kb3) 54. Bd2 c5 55. Bc1 Kb4 56. Bd2+ Kb3 57. Bc1 Nb4+ 58. Ke4 c4 59. Kd4 c3 60. f5 gxf5 61. h5 Nd5 {Black mates.} 62. Kd3 f4 63. Ke4 Kc2 64. Ba3 Kd1 65. g6 fxg6 66. h6 c2 67. Kd4 f3 {Weighted Error Value: White=0.72/Black=0.17} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.9"]
[White "Likoko, Elvis"]
[Black "Oatlhotse, Providence"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1646"]
[BlackElo "2190"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,72,-37,-27,-39,-1,-30,-7,-41,-6,-56,-35,-62,-65,-125,-45,-93,-93,-226,-176,-188,-188,-186,-172,-309,-250,-331,-231,-284,-252,-245,-214,-315,-313,-420,-425,-393,-282,-529,-569,-1064,-212,-216,-198,-629,-580,-1369,-1325,-1223,-1224,-1354,-1307,-1352,-1119,-1447,-1397,-1289,-1063,-29996,-29997,-29997,-29998,-29998,-29999,-29999,-29999]} 1. e4 c5 2. f3 Nc6 3. Ne2 d5 4. exd5 Qxd5 5. Nbc3 Qd8 {[#]} 6. d3 $146 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} ({Predecessor:} 6. Ng3 Nf6 7. a3 e6 8. Bc4 Be7 9. d3 O-O 10. Be3 b6 11. Qd2 Bb7 12. Nce4 {0-1 (39) Endrina,J (1645)-Jacutina,J (2041) Tagaytay City 2017}) 6... e5 7. Be3 Be7 8. Qd2 {The position is equal.} Nf6 9. O-O-O O-O 10. h4 Nd4 11. h5 ({Better is} 11. f4 $15) 11... Be6 (11... h6 $17 12. Kb1 Be6) 12. Kb1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 13. Nc1 {Now White is beyond hope.} (13. h6 $17 {was called for.} g6 14. Bg5) 13... a5 {[%cal Ba7a5,Ba5a4,Ba4b3][%mdl 32]} 14. Ne4 b4 15. h6 g6 16. Be2 (16. Nxf6+ {was worth a try.} Bxf6 17. g3) 16... a4 17. f4 b3 18. cxb3 axb3 19. a3 exf4 20. Bxf4 (20. Bf2 $142) 20... Nd5 $19 21. Bg5 f6 22. Bh4 Nc2 23. Bf2 (23. Rdf1) 23... Qb6 24. d4 {[%cal Rd4c5] [#]} Bf5 $2 (24... Rxa3 $1 {[%mdl 512]} 25. bxa3 c4) 25. dxc5 {[#]} Qe6 {[%cal Re6e4]} ({Worse is} 25... Nxa3+ 26. bxa3 Bxe4+ 27. Bd3 $15) 26. Bd3 {[#]} ({Don't blunder} 26. Qxd5 $2 Nxa3+ 27. bxa3 Bxe4+ 28. Qxe4 Qxe4+ $19) (26. Rh4 Bxe4 27. Rxe4 Nxa3+ 28. bxa3 Qxe4+ {[%mdl 64] Double Attack} 29. Kb2) 26... Ndb4 $1 {[%mdl 512]} 27. Ng3 {[#]} (27. Qc3 Nxd3) 27... Rxa3 $1 {[%mdl 576] Demolition} 28. bxa3 Nxa3+ 29. Kb2 Nxd3+ 30. Qxd3 Nc4+ 31. Kc3 Bxd3 32. Nxd3 Ne5 {( -> ...Qc4+)} 33. Rhe1 Qc4+ {Black mates.} 34. Kb2 Qc2+ 35. Ka3 Ra8+ 36. Kb4 Rb8+ {Weighted Error Value: White=1.28/Black=0.50} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.10"]
[White "Joelson, Ricardo"]
[Black "Pascoal, Eduardo A"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2017"]
[BlackElo "2184"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,73,13,31,8,15,0,18,16,17,18,5,8,4,12,12,14,12,9,25,0,12,3,41,-20,5,5,13,6,21,16,22,22,22,21,25,23,26,15,102,62,62,62,62,62,91,98,93,85,90,80,104,41,75,59]} 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O c5 5. c4 g6 6. Nc3 Bg7 7. d4 cxd4 8. Nxd4 Bxg2 9. Kxg2 Qc8 10. b3 O-O 11. Bb2 Nc6 12. Rc1 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} Qb7 {[#] Threatens to win with ...Nxd4+.} 13. Kg1 {[#]} Rac8 $146 ({Predecessor:} 13... Rfd8 14. Nxc6 dxc6 15. Qc2 e6 16. Rcd1 c5 17. h3 h5 18. Rxd8+ Rxd8 19. Rd1 Rxd1+ 20. Qxd1 {1-0 (60) Torzsas,L (1755)-Kutnik,A (2011) Satu Mare 2019}) 14. Re1 {The position is equal.} Nxd4 15. Qxd4 Ne4 16. Qxe4 Qxe4 17. Nxe4 {Black must now prevent Bxg7.} Bxb2 18. Rc2 Bg7 19. Rd1 d6 20. Rd5 Rc6 21. e3 Rfc8 22. Kf1 ({Better is} 22. g4 $14) 22... h6 23. g4 a6 24. Rcd2 Rb8 25. Ke2 b5 26. c5 dxc5 27. Rxc5 Rxc5 28. Nxc5 $11 {[%mdl 4096] Endgame KRB-KRN} a5 29. Rc2 Rb6 (29... Rc8 $11 {remains equal.}) 30. Nd3 f5 31. gxf5 gxf5 32. Nf4 e6 33. Rc8+ Kf7 34. Rc7+ Kf8 35. h3 a4 {[#]} 36. h4 ({White should try} 36. bxa4 $1 $16 bxa4 37. Ra7) 36... axb3 37. axb3 {Weighted Error Value: White=0.14/Black=0.16} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.11"]
[White "Gohil, Mehul"]
[Black "Meftahi, Houssem"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "1991"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,54,19,1,66,57,50,0,-12,-74,-89,-90,-95,-103,-112,-108,-68,-73,-75,-284,-272,-549,-525,-548,-556,-600,-597,-685,-681,-899,-860,-929,-835,-1006,-952,-1122,-1081,-1506,-1456,-1281,-1800,-1717,-1740,-2352,-2339,-6979,-6104]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. Bd2 b5 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} (6... Nf6 $11) 7. axb5 $14 {aiming for Qa4.} Bxc3 8. bxc3 (8. Bxc3 $14 cxb5 9. b3) 8... cxb5 $11 {The position is equal.} 9. g3 (9. Qb1 $11 {keeps the balance.}) 9... Bb7 $17 10. Bg2 Nf6 {[#]} 11. O-O $146 ({Predecessor:} 11. Bg5 Nbd7 12. O-O O-O 13. Re1 Qb6 14. Qc2 Ne4 15. Be3 Qc7 16. Bf4 Qc8 17. Rad1 {0-1 (39) Adam,F (1541)-Delafenetre,A (1604) Cantenay Epinard 2015}) 11... O-O 12. Qb1 a6 13. Bg5 Nbd7 14. Ne5 $2 {This costs White the game.} (14. Re1 $17 {is a better defense.}) 14... Bxg2 $19 15. Nxd7 $2 (15. Kxg2 Nxe5 16. dxe5 Qd5+ {[%mdl 64] Double Attack} 17. Kg1) 15... Qxd7 {Black is clearly winning.} 16. Kxg2 Qd5+ {[%mdl 64] [#] Double Attack} 17. Kg1 Qxg5 18. f4 Qf5 19. Qd1 Qe4 20. Qd2 Nd5 21. Rf3 f5 22. Raf1 a5 23. h3 b4 24. g4 b3 25. gxf5 exf5 26. Rg3 Rfb8 27. e3 b2 {Weighted Error Value: White=1.03/Black=0.20} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.12"]
[White "Hamzaoui, Khalil"]
[Black "Mwashe, Philip"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "1883"]
[BlackElo "1756"]
[Annotator "NA RC"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. Nf3 {[%emt 0:00:00]} Nf6 {[%emt 0:00:04]} 2. g3 {[%emt 0:00:05]} g6 {[%emt 0:00:03]} 3. Bg2 {[%emt 0:00:02]} Bg7 {[%emt 0:00:02]} 4. O-O {[%emt 0:00:01]} d6 {[%emt 0:00:04]} 5. d4 {[%emt 0:00:03]} O-O {[%emt 0:00:03]} 6. c4 {[%emt 0:00:02]} c6 {[%emt 0:00:43]} 7. Nc3 {[%emt 0:00:04]} d5 {[%emt 0:00:03]} 8. cxd5 {[%emt 0:01:22]} cxd5 {[%emt 0:00:05]} 9. Ne5 {[%emt 0:00:02]} e6 {[%emt 0:00:43]} 10. Bg5 {[%emt 0:01:08]} Nbd7 {[%emt 0:00:10]} 11. Qd2 {[%emt 0:00:09]} a6 {[%emt 0:00:16]} 12. Rac1 {[%emt 0:01:37]} Qb6 {[%emt 0:02:00]} 13. Na4 {[%emt 0:02:05]} Qa7 {[%emt 0:00:18]} 14. Nc5 {[%emt 0:04:22]} Nxe5 {[%emt 0:01:21]} 15. dxe5 {[%emt 0:00:13]} Nd7 {[%emt 0:00:06]} 16. Nxd7 {[%emt 0:01:36]} Bxd7 {[%emt 0:00:04]} 17. Bf6 {[%emt 0:00:03]} Rac8 {[%emt 0:00:43]} 18. h4 {[%emt 0:00:13]} Qb8 {[%emt 0:00:08]} 19. Qf4 {[%emt 0:00:10]} Bb5 {[%emt 0:00:36]} 20. h5 {[%emt 0:00:37]} Bxe2 {[%emt 0:01:18]} 21. Bxg7 {[%emt 0:00:22]} Rxc1 {[%emt 0:01:16]} 22. Rxc1 {[%emt 0:00:14]} Rc8 {[%emt 0:07:10]} 23. Rxc8+ {[%emt 0:00:12]} Qxc8 {[%emt 0:00:05]} 24. Bh6 {[%emt 0:00:28]} Qd8 {[%emt 0:00:13]} 25. hxg6 {[%emt 0:00:36]} hxg6 {[%emt 0:00:42]} 26. Bg5 {[%emt 0:00:09]} Qf8 {[%emt 0:00:19]} 27. Bf6 {[%emt 0:00:05]} Kh7 {[%emt 0:00:13]} 28. Bg5 {[%emt 0:00:43]} Qg7 {[%emt 0:00:35]} 29. Qh4+ {[%emt 0:00:05]} Kg8 {[%emt 0:00:06]} 30. Bf6 {[%emt 0:00:05]} Qh7 {[%emt 0:00:04]} 31. Qa4 {[%emt 0:00:24]} Bb5 {[%emt 0:00:16]} 32. Qa5 {[%emt 0:00:05]} Qh6 {[%emt 0:00:10]} 33. Qd8+ {[%emt 0:00:23]} Qf8 {[%emt 0:00:05]} 34. Qc7 {[%emt 0:00:03]} Bc6 {[%emt 0:00:21]} 35. Qb6 {[%emt 0:00:46]} Qh6 {[%emt 0:00:19]} 36. Qd8+ {[%emt 0:01:55]} Qf8 {[%emt 0:00:06]} 37. Qxf8+ {[%emt 0:00:02]} Kxf8 {[%emt 0:00:02]} 38. Kf1 {[%emt 0:00:03]} Ke8 {[%emt 0:00:07]} 39. Ke2 {[%emt 0:00:02]} Kd7 {[%emt 0:00:04]} 40. Kd3 {[%emt 0:00:03]} Kc7 {[%emt 0:00:05]} 41. Kd4 {[%emt 0:00:10]} b6 {[%emt 0:00:07]} 42. f4 {[%emt 0:00:04]} Kd7 {[%emt 0:00:05]} 43. g4 {[%emt 0:00:05]} Kc7 {[%emt 0:00:07]} 44. Bf1 {[%emt 0:00:09]} b5 {[%emt 0:00:07]} 45. Kc5 {[%emt 0:00:05]} Bb7 {[%emt 0:00:07]} 46. Bd3 {[%emt 0:00:06]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.13"]
[White "Vermaak, Ashley Christopher"]
[Black "Abdelazeez, Mohamed Abdalla"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1751"]
[BlackElo "2214"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,91,29,24,34,15,17,13,99,86,91,100,132,135,312,318,358,318,298,286,287,284,284,284,284,281,280,270,270,268,270,270,265,260,276,293,294,293,333,335,350,335,417,410,425,414,520,468,492,470,461,467,454,444,444,345,323,282,604,598,803,806,972,728,946,642,849,809,829,827,976,960,837,702,1134,1081,5177,5077,29983,29984,29984,29985,5397,721]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. e3 Bf5 6. Qb3 b5 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4.} 7. cxd5 cxd5 8. a4 bxa4 (8... b4 $1 $11 9. Nh4 (9. Qxb4 Nc6 $11) 9... bxc3 10. Nxf5 e6) 9. Qb7 $16 Nbd7 {[#]} 10. Ne5 $146 ({Much weaker is} 10. Bxa6 $6 e6 $11) ({Predecessor:} 10. Bxa6 e6 11. Ne5 Nxe5 12. dxe5 Nd7 13. Bb5 Rb8 14. Bxd7+ Ke7 15. Qa7 Ra8 16. Qc5+ Kxd7 17. Qb5+ Ke7 18. e4 dxe4 19. Bg5+ f6 20. exf6+ gxf6 21. Qb7+ Qd7 {1-0 (21) Senk,C (2162)-Jenisch,A (1850) St Leon Rot 2011}) 10... Rb8 11. Qxa6 {aiming for Nc6.} e6 $2 (11... Nxe5 $16 12. dxe5 Ng4) 12. Nc6 $18 {[%mdl 64] [#] Double Attack} ({Weaker is} 12. Rxa4 Nxe5 13. dxe5 Nd7 $11) ({Less strong is} 12. Qxa4 Rb4 $16) 12... Qb6 {If only Black now had time for ...Qxa6....} 13. Nxb8 Qxb8 14. Rxa4 {Black must now prevent Qc6.} Bd6 15. Qa8 O-O 16. Qxb8 Rxb8 17. Nb5 Bf8 18. Be2 Nb6 19. Ra7 Nc4 20. Bxc4 dxc4 21. Nc3 Bd3 22. f3 h5 23. Kf2 g5 24. Ra5 g4 25. Rb5 Ra8 26. e4 Ra1 {If Black can now play ...Bh6 this consolidates a bit.} 27. Re1 h4 28. Bd2 Ra6 29. Rb8 Kg7 {[#]} 30. Bh6+ $1 {[%mdl 576] Deflection} Kxh6 31. Rxf8 Rb6 32. Nd1 Kg7 33. Rc8 gxf3 $2 (33... Rb3 34. e5 Nd5 35. fxg4 Ne7) 34. gxf3 Nh5 35. Rg1+ Kf6 36. Rg4 Bc2 37. Ke1 Bxd1 38. Kxd1 Rxb2 39. Rxh4 {[%mdl 4096] Endgame KRR-KRN} Kg5 40. Rg4+ Kf6 41. h4 Rf2 42. Rc5 e5 43. Rxe5 Ng7 44. Rf4+ Kg6 45. Rg5+ Kh6 46. Rf6+ {White took control after the opening.  Weighted Error Value: White=0.23/Black=0.44} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.14"]
[White "Alberto, Manuel"]
[Black "Fernandes, Avelino"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2167"]
[BlackElo "1887"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,39,60,70,43,61,59,66,75,100,85,116,78,71,64,90,65,65,53,124,120,216,115,115,62,212,206,651,634,606,614,29995,29996]} 1. e4 c6 2. d4 e6 3. c4 d5 4. Nc3 Nf6 5. e5 Nfd7 6. f4 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} dxc4 7. Bxc4 b5 8. Bd3 {White is slightly better.} Nb6 {[#]} 9. Nf3 $146 ({Predecessor:} 9. Nge2 Bb7 10. O-O N8d7 11. Be3 a6 12. Ng3 c5 13. f5 Nd5 14. Nxd5 Bxd5 15. Rc1 {½-½ (62) Krestinine,M (1450)-Couradin,J (1671) Montigny le Bretonneux 2011}) 9... Na6 10. O-O Nb4 11. Be4 a6 12. Ne2 N4d5 13. Ng3 c5 (13... g6 $14) 14. f5 $16 {Black must now prevent Ng5.} Be7 (14... h6 $16) 15. fxe6 ({White should play} 15. f6 $18 gxf6 16. exf6) 15... Bxe6 16. Nf5 (16. Qe1 $16) 16... O-O {This move loses the game for Black.} (16... Bxf5 $14 17. Bxf5 O-O) 17. Nxe7+ $18 Qxe7 $2 {[#]} (17... Nxe7 18. Bxa8 (18. dxc5 Nbd5 $18) 18... Qxa8 19. dxc5 Nbd5) 18. Bxh7+ $1 {[%mdl 512]} Kxh7 19. Ng5+ Kg6 20. Qd3+ {Weighted Error Value: White=0.13/Black=1.18} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.15"]
[White "Strovsky, Mikhail"]
[Black "Calicoca, Wilton Inacio"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "2164"]
[BlackElo "2122"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,72,18,16,1,12,4,11,0,0,-18,4,-27,0,-33,53,38,69,48,120,62,147,141,167,0,29,0,0,0,0,-360,-340,-331,-343,-330,-338,-323,-334,-329,-331,-745,-250,-498,-501,-463,-495,-499,-497,-494,-486,-600,-454,-572,-586,-1260,-1209,-1370,-1368,-29995,-29996,-29996,-29988,-29988,-731]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. d3 e6 7. Bg5 {B52: Sicilian: Moscow Variation with 3...Bd7.} Be7 8. Re1 Qc7 {[#]} 9. Nbd2 $146 {The position is equal.} ({Predecessor:} 9. c4 O-O 10. Nc3 a6 11. a4 Rfd8 12. Bf4 Nh5 13. Qd2 Nxf4 14. Qxf4 Bf6 15. Rad1 {½-½ (31) Hristodoulou,D-Sandalakis,A Kavala 1999}) 9... h6 10. Be3 Ng4 11. Qe2 O-O-O 12. h3 Nge5 (12... Nxe3 $15 13. Qxe3 Bf6) 13. Nxe5 dxe5 14. Nc4 f5 (14... h5 $14) 15. a4 (15. exf5 $16 exf5 16. Bd2) 15... g5 {[#]} (15... f4 $1 $14) 16. exf5 $1 $16 exf5 17. f4 $2 ({White should try} 17. Bd2 $18) 17... Bf6 18. fxe5 Nxe5 19. Qf2 f4 20. Kh1 $2 {[%mdl 8192] Black continues to play with concentration.} (20. Nxe5 $11 {and White is okay.} Bxe5 21. Bxc5) 20... Nxc4 $19 {[%mdl 64] [#] Discovered Attack} 21. dxc4 Bxb2 22. Rab1 Bc3 ({Don't play} 22... fxe3 23. Qf5+ Kb8 24. Rxb2 $19) 23. Bxc5 Bxe1 24. Rxe1 {If White can now play Be7 this consolidates a bit.} b6 {[%cal Bb7b6,Bb6c5][%mdl 32]} 25. Qf3 $2 (25. Bd4 Rhe8 26. Rb1) 25... Kb8 $2 ({Not} 25... bxc5 26. Qa8+ Qb8 27. Qc6+ Qc7 28. Qa8+ Qb8 29. Qc6+ Qc7 30. Qa8+ $11) (25... Qxc5 26. Qa8+ Kc7 27. Qxa7+ Kc6) 26. Bb4 $2 (26. Be7 Rhe8 27. Qe4) 26... Rhe8 27. Rxe8 Rxe8 {[%mdl 4096] Endgame KQR-KQB} 28. c5 bxc5 29. Bd2 c4 30. Qd5 {Threatens to win with Qb5+.} Qb7 31. Qd6+ Ka8 32. Bb4 f3 33. Kg1 fxg2 {( -> ...Qf3)} 34. Bc5 Re1+ {Black mates.} 35. Kh2 Rh1+ 36. Kg3 g1=Q+ {Accuracy: White = 37%, Black = 55%.} (36... g1=R+ $142 37. Bxg1 Rxg1+ 38. Kf2 Qg2+ {[%mdl 64] Double Attack} 39. Ke3 Re1+ 40. Kd4 Rd1+ {[%mdl 64] Skewer} 41. Kc5 Qf2+ 42. Kb4 Rxd6 43. a5 Qxc2 44. Kc5 Qd3 45. h4 Rd5+ 46. Kc6 c3 47. hxg5 Qc4#) 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.16"]
[White "Simpson, Michael M"]
[Black "Cambando, Jose"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1995"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,151,35,33,33,25,23,32,31,55,49,58,43,49,32,75,75,127,98,110,92,136,97,133,131,131,142,127,108,143,137,153,132,126,114,114,109,103,76,145,139,168,180,191,191,201,121,149,141,188,130,150,144,281,257,283,260,275,273,262,267,199,166,143,141,402,422,430,407,396,406,454,461,430,227,320,324,669,658,591,557,504,409,727,640,1022,954,957,948,873,830,791,734,702,628,1242,1298,1214,1215,1132,1079,1016,0,800,789,775,734,704,625,10037,12634,29977,29977,29982,29982,29983,6403,29983,29981,29980,29981,29983,29982,29985,29986,29988,29989,29989,29989,29989,12848,12850,12848,12849,12849,12850,12849,12850,12850,12850,27999,27998,27998,27999,27999]} 1. e4 c5 2. Nc3 d6 3. f4 Nf6 4. Nf3 e6 5. Bb5+ Nc6 6. Bxc6+ {B23: Closed Sicilian: Lines without g3.} bxc6 7. d3 $1 {The main line 7.d3 scores better than 7.0-0.} d5 8. O-O {White is slightly better.} Rb8 {[#]} 9. Re1 $146 ({Predecessor:} 9. b3 Be7 10. e5 Nd7 11. Bd2 O-O 12. Qe2 Re8 13. Rae1 Nf8 14. Ng5 h6 15. Nh3 {0-1 (48) Baldursson,R (1890)-Nolsoe,E (2197) Faroe Islands 2013}) 9... Be7 10. b3 O-O 11. e5 Ne8 12. Na4 g6 (12... Nc7 $142) 13. Be3 d4 14. Bc1 Ng7 15. Nd2 f5 16. exf6 Rxf6 17. Ne4 Rf5 18. g4 Rd5 19. Nb2 Ba6 20. Nc4 Bxc4 21. bxc4 Rd7 22. Bd2 Qc7 23. Rb1 Rb6 ({Black should play} 23... Rxb1 24. Qxb1 Qc8) 24. Rb3 $16 Rb7 25. Qe2 Qd8 26. Reb1 Rxb3 27. Rxb3 (27. cxb3 Qf8 $16) 27... h5 28. h3 Qc7 29. Qf2 (29. Qf1 $18) 29... Rd8 30. Qe1 {Strongly threatening Ba5.} Rf8 {[#]} (30... Re8 $16 31. Qf1 Rb8) 31. Qb1 $1 $18 hxg4 32. Rb7 {[%mdl 64] Zwischenzug} (32. hxg4 e5 $11) 32... Qd8 33. hxg4 e5 34. Rxa7 ({Less strong is} 34. fxe5 Qc8 $16) 34... Qc8 35. Nf2 (35. Rxe7 Qxg4+ 36. Kf1 Qh3+ 37. Kg1 Qg4+ 38. Kf1 Qh3+ 39. Kg1 Qg4+ $11) 35... Bh4 {[#]} 36. Qb7 $1 $36 {[%csl Ga7][%cal Rb7g7][%mdl 2048] White has strong initiative.} Bxf2+ $4 {[%mdl 8192]} (36... Qxb7 $16 {keeps fighting.} 37. Rxb7 Ne6) 37. Kxf2 {[%csl Ga7][%cal Rb7g7]} Qxb7 38. Rxb7 exf4 $16 {[%mdl 4096] Endgame KRB-KRN} 39. a4 g5 {Now ...Ra8 and Black clings on.} 40. a5 Ra8 41. Rb6 (41. Re7 $142) 41... Kf7 (41... Ne6 {was necessary.} 42. Rxc6 Kf7) 42. a6 $18 ({Don't take} 42. Rxc6 $6 Ne6 $18) 42... Ne6 $2 (42... Kf6 43. Rxc6+ Ne6) 43. Rb7+ Kf6 44. a7 Nd8 45. Rc7 Ke6 (45... Nf7 $142 46. Rxc6+ {[%mdl 64] Double Attack} Ke7 47. Rc7+ (47. Rxc5 Rxa7 48. Bb4 Ke6 $18) 47... Kf6) 46. Ba5 Kd6 47. Rg7 Ne6 48. Rb7 Nf8 49. Bc7+ Ke6 50. Bb8 Nd7 51. Kf3 Ne5+ 52. Bxe5 Kxe5 {KR-KR} 53. Rc7 Kd6 54. Rg7 Ke6 55. Rb7 Ke5 $1 56. Kf2 Ke6 57. Rg7 Kd6 58. Rg6+ Kc7 59. Rxg5 Kb6 60. Rg7 Rf8 61. Kf3 Ka5 62. Rf7 Ra8 63. Kxf4 Kb4 64. g5 Kc3 65. g6 Kxc2 66. g7 Rg8 67. Rf8 Rxg7 68. a8=Q Kxd3 69. Qxc6 (69. Qa3+ $142 Ke2 70. Re8+ Kd2 71. Rb8 Rf7+ 72. Ke5 Re7+ 73. Kf6 Rf7+ 74. Kxf7) 69... Kxc4 70. Qa4+ Kd3 71. Qb3+ Kd2 72. Qc4 {Threatening mate with Rb8.} Rc7 73. Rd8 {White threatens Rb8 and mate.} Rc6 {[#]} 74. Rxd4+ $1 cxd4 75. Qxc6 d3 76. Kf3 {Weighted Error Value: White=0.21/Black=0.53} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.17"]
[White "Ndegwa, Jackson Kamau"]
[Black "Mosutha, Thuso"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2001"]
[BlackElo "2036"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,111,-1,-13,-47,-50,-62,-34,-51,-35,-31,-27,-11,-5,-25,-10,-25,-30,-26,-22,-47,-38,-38,-39,-33,-31,-29,-14,-73,-73,-70,-77,-66,-66,-101,-105,-450,-115,-245,-20,-16,-22,-110,-111,-133,-132,-141,-70,-91,-92,-96,-38,-58,-46,-50,-40,-39,-40,-90,-76,-89,-75,-149,-159,-254,-181,-637,-137,-173,-176,-205,-207,-196,-187,-183,0,-134,-132,-149,-121,-169,-163,-164,-142,-127,0,0,0,-58,0,0,0,-20,16,0,0,-8,27,33,60,89,277,276,29984,29985]} 1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Nc3 Nxd5 5. Nxd5 Qxd5 6. Ne2 {B21: Sicilian: 2 f4 and Morra Gambit.} (6. Qf3 {is interesting.} Qe6+ 7. Qe3 Nc6 8. Nf3 g6 9. Bb5) 6... Nc6 {[%cal Bb8c6,Bc6d4,Bd4e2][%mdl 32]} 7. Nc3 {[#]} Qd6 $146 (7... Qe6+ {keeps more tension.} 8. Be2 Nd4 9. O-O g6 10. Bf3 Bg7) ({Predecessor:} 7... Qd8 8. Bc4 Bf5 9. O-O Qd4+ 10. Kh1 Qxc4 11. d3 Qd4 12. Nb5 Qd8 13. Be3 e6 {½-½ (38) Rahimi,R (1082)-Hoepfner,T (1265) Willingen 2006}) 8. d3 {Black is slightly better.} Bf5 9. Be2 e6 10. O-O {And now g4 would win.} Nd4 11. Ne4 Qd7 12. c3 Nxe2+ 13. Qxe2 Rd8 14. Rd1 Be7 15. Be3 Qc6 16. Ng3 Bg6 17. d4 O-O 18. Qg4 (18. dxc5 $11 {remains equal.} Bxc5 19. Bxc5 Qxc5+ 20. Qf2) 18... cxd4 $17 19. Bxd4 Bc5 20. f5 Bxd4+ 21. cxd4 exf5 22. Nxf5 {[%mdl 8192] [#]} (22. Qf4 $17) 22... Qd7 $2 (22... Qe6 $1 $19 {is more deadly.} 23. d5 Bxf5 24. dxe6 Bxg4 25. exf7+ Kxf7 26. Rf1+ Kg6 27. Rxf8 Rxf8) 23. Ne3 (23. Rf1 $17) 23... Rfe8 $2 (23... Qxg4 $19 24. Nxg4 Bh5) 24. Qxd7 $11 Rxd7 25. Nc4 (25. Kf2 $11 {keeps the balance.}) 25... f6 $17 26. Rd2 Red8 27. Na5 Be4 (27... Rxd4 $17 28. Rxd4 Rxd4) 28. Nb3 b6 29. Kf2 a5 (29... Bg6 $17) 30. Rad1 Bd5 31. Nc1 $1 Kf7 32. b3 g5 $36 {[%mdl 2048] Black fights for an advantage.} 33. Ke3 Re8+ 34. Kf2 Rde7 35. Ne2 {[#]} (35. g3 $142) 35... Bxg2 $1 {[%mdl 512]} 36. d5 (36. Nc3 $17 Bb7 37. d5) 36... Bh3 {...Rxe2+! is the strong threat.} 37. d6 $2 {[#]} (37. Nc3) 37... Rd7 $2 (37... Rxe2+ $1 $19 {[%mdl 512] and Black stays clearly on top.} 38. Rxe2 Rxe2+ 39. Kxe2 Bg4+ {[%mdl 64] Skewer} 40. Ke1 Bxd1 41. Kxd1 Ke6) 38. Nc3 Bg4 39. Re1 Rxe1 40. Kxe1 $19 {[%mdl 4096] Endgame KRB-KRN} Ke6 41. Nb5 Kf7 $2 ({Black should play} 41... Ke5 $19 42. Rd3 Bf5 43. Re3+ Kd5) 42. Kf2 (42. Nc3 $1 $11 {was the only way to keep the balance.}) 42... h5 43. Ke3 Be6 44. Kd4 h4 45. Ke4 Rd8 46. Nc7 Rd7 (46... Bd7 $17 47. a3 f5+ 48. Ke5 f4) 47. Na8 (47. Nb5 {with more complications.}) 47... b5 48. Nc7 (48. Nb6 $1 $11 Rd8 49. d7) 48... b4 ({Black should try} 48... Rd8 $15) 49. Na6 $1 $11 Rd8 50. Nc5 g4 51. Nb7 Rd7 {[%cal Rd7b7]} 52. Nxa5 g3 53. hxg3 hxg3 54. Kf3 $1 Ra7 $2 (54... Ke8 $16) 55. Nc6 $18 {[%mdl 64] Double Attack} Rb7 (55... Rd7 $18 56. Nxb4 (56. Kxg3 Ke8 $18) 56... Rd8 57. Kxg3 Bc8) 56. Nd8+ {[%mdl 64] Double Attack. What a fight!  Weighted Error Value: White=0.48/Black=0.58} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.18"]
[White "Bongo Akanga Ndjila, Barthelemy"]
[Black "Khalema, Sechaba"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1803"]
[BlackElo "1827"]
[Annotator "NA RC"]
[PlyCount "93"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:16]} 2. Nf3 {[%emt 0:00:50]} Nf6 {[%emt 0:00:05]} 3. Bg5 {[%emt 0:00:39]} e6 {[%emt 0:00:20]} 4. e3 {[%emt 0:00:39]} c5 {[%emt 0:00:05]} 5. Nbd2 {[%emt 0:00:23]} Nc6 {[%emt 0:00:08]} 6. c3 {[%emt 0:00:04]} Qb6 {[%emt 0:00:10]} 7. Qc2 {[%emt 0:00:22]} Be7 {[%emt 0:00:04]} 8. Bd3 {[%emt 0:01:13]} h6 {[%emt 0:01:11]} 9. Bh4 {[%emt 0:00:06]} Bd7 {[%emt 0:00:50]} 10. Ne5 {[%emt 0:01:37]} Rc8 {[%emt 0:01:34]} 11. Nxd7 {[%emt 0:00:19]} Nxd7 {[%emt 0:00:13]} 12. Bxe7 {[%emt 0:00:12]} Nxe7 {[%emt 0:00:04]} 13. Nf3 {[%emt 0:04:10]} O-O {[%emt 0:01:40]} 14. O-O {[%emt 0:01:22]} c4 {[%emt 0:00:13]} 15. Be2 {[%emt 0:00:04]} f5 {[%emt 0:00:04]} 16. b3 {[%emt 0:00:40]} cxb3 {[%emt 0:00:07]} 17. axb3 {[%emt 0:00:03]} a6 {[%emt 0:00:05]} 18. c4 {[%emt 0:00:19]} Nf6 {[%emt 0:00:04]} 19. Ne5 {[%emt 0:00:05]} Nc6 {[%emt 0:00:17]} 20. Ng6 {[%emt 0:02:17]} Rfe8 {[%emt 0:00:30]} 21. c5 {[%emt 0:00:19]} Qc7 {[%emt 0:00:05]} 22. Bf3 {[%emt 0:01:05]} Qf7 {[%emt 0:00:10]} 23. Nf4 {[%emt 0:00:06]} g5 {[%emt 0:00:06]} 24. Nd3 {[%emt 0:00:19]} g4 {[%emt 0:00:03]} 25. Be2 {[%emt 0:00:06]} e5 {[%emt 0:00:28]} 26. dxe5 {[%emt 0:00:13]} Nxe5 {[%emt 0:00:05]} 27. Nf4 {[%emt 0:00:02]} Kg7 {[%emt 0:00:07]} 28. b4 {[%emt 0:00:05]} Nc6 {[%emt 0:00:25]} 29. b5 {[%emt 0:00:10]} axb5 {[%emt 0:00:05]} 30. Bxb5 {[%emt 0:00:03]} Ne4 {[%emt 0:01:03]} 31. Rfd1 {[%emt 0:00:22]} Red8 {[%emt 0:00:09]} 32. Qb2+ {[%emt 0:00:53]} Kh7 {[%emt 0:00:04]} 33. Rac1 {[%emt 0:06:09]} h5 {[%emt 0:01:13]} 34. Be2 {[%emt 0:00:52]} Rd7 {[%emt 0:00:19]} 35. f3 {[%emt 0:00:06]} Nf6 {[%emt 0:00:28]} 36. fxg4 {[%emt 0:00:51]} hxg4 {[%emt 0:00:05]} 37. Bd3 {[%emt 0:00:40]} Ne4 {[%emt 0:00:07]} 38. Bxe4 {[%emt 0:00:02]} dxe4 {[%emt 0:00:06]} 39. Qf2 {[%emt 0:00:42]} Rcd8 {[%emt 0:00:12]} 40. Qh4+ {[%emt 0:00:07]} Kg8 {[%emt 0:00:09]} 41. Qg5+ {[%emt 0:00:22]} Kh7 {[%emt 0:00:04]} 42. Qh4+ {[%emt 0:00:40]} Kg8 {[%emt 0:00:09]} 43. Qg5+ {[%emt 0:00:04]} Kh7 {[%emt 0:00:07]} 44. Rxd7 {[%emt 0:00:55]} Rxd7 {[%emt 0:00:07]} 45. Nh5 {[%emt 0:00:08]} Rd2 {[%emt 0:00:30]} 46. Nf6+ {[%emt 0:00:20]} Kh8 {[%emt 0:00:05]} 47. Qh6+ {[%emt 0:00:02]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.19"]
[White "Sang, Ricky"]
[Black "Libe, Sofonea"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1991"]
[BlackElo "1509"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,102,25,36,52,14,15,0,54,55,67,56,79,92,83,60,76,53,69,46,104,45,52,42,60,43,49,25,53,-11,-14,-12,-6,-17,-3,-33,12,-36,-17,-28,0,0,0,-118,-123,-119,-62,-52,-44,-45,-55,-54,-29,-189,-68,-66,-77,-95,0,-10,-12,-14,0,0,0,0,0,0,0,0,0,0,0,0,833,790,689,0,0,0,0,0,0,0,12,0,27,0,29998,29999,29999]} 1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nd2 Bd6 5. Bg3 c5 6. c3 Nc6 7. Ngf3 cxd4 8. exd4 a6 {[#] D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} 9. Ne5 $146 ({Predecessor:} 9. Bd3 b5 10. b4 Bb7 11. a4 bxa4 12. Qxa4 O-O 13. O-O Bxg3 14. hxg3 Qd6 15. Rfe1 Nd7 16. Qc2 {1-0 (73) Trivedi Karan,R (1956)-Patel,P (1830) Ahmedabad 2020}) 9... Qc7 {[%cal Rc6e5]} 10. f4 b5 ({Black should try} 10... O-O $11) 11. Bd3 $14 Bb7 12. Qe2 Rc8 13. O-O O-O 14. Rac1 Ne7 15. Bf2 Nd7 16. Qh5 {[%csl Gd3][%cal Rh5h7]} Ng6 ({Better is} 16... Nf6 $14 17. Qe2 g6) 17. Be3 (17. Bh4 $16) 17... Nf6 18. Qf3 Qe7 19. g4 Nh4 20. Qh3 Ne4 21. Ndf3 (21. f5 $14) 21... Nxf3+ $11 22. Nxf3 f6 23. Rce1 Rce8 24. Bc1 e5 25. Nh4 Qd7 26. Nf5 Bc7 (26... exd4 {is more complex.} 27. cxd4 Bc7 28. Re2 Rc8 29. Be3 Kh8) 27. fxe5 fxe5 28. Ng3 (28. Be3 $11) 28... exd4 $17 29. cxd4 Bxg3 (29... g6 $17 30. Ne2 Rxf1+ 31. Rxf1 Bc8) 30. hxg3 $15 Rxf1+ 31. Rxf1 Bc8 32. Rf4 Qe7 33. Bd2 $2 {[#]} g6 (33... g5 $1 $19 {[%cal Rg5f4]} 34. Bxe4 dxe4) 34. Bxe4 dxe4 35. Be3 {[#]} Rf8 (35... Qb4 $1 $17 {[%cal Rb4e1] ...Qe1+ is the strong threat.} 36. Kh2 Qxb2+ 37. Rf2 Qb4) 36. Qg2 (36. Qh6 {looks sharper.} Qb4 37. Rxf8+ Qxf8 38. Qg5 Qd6 39. Kg2) 36... Rxf4 37. gxf4 Bb7 38. f5 Qg7 39. Qf2 gxf5 40. Qxf5 Qf7 41. Qg5+ Qg7 42. Qd8+ Qf8 43. Qc7 Qg7 $2 {[%mdl 8192]} (43... Bc8 $11) 44. Qb8+ $18 Qf8 45. Qe5 $2 (45. Qxb7 $18 Qf3 46. Qd5+ Kh8 47. Qe5+ Kg8 48. Qg5+ Kf7 49. d5) 45... Qg7 46. Qe6+ ({Weaker is} 46. Qb8+ Qf8 $18) 46... Qf7 47. Qe5 Qg7 48. Qh5 ({Not} 48. Qb8+ Qf8 $18) 48... Bc8 49. Qd5+ Kh8 50. Bg5 {Threatening mate with Qd8+.} (50. g5 $5 {[%cal Re3f4]} Qe7 51. Bf4 $11) 50... Bb7 $2 {[%mdl 8192]} (50... h6 $11 51. Qd8+ Kh7) 51. Qd8+ Qg8 52. Bf6# {Weighted Error Value: White=0.42/Black=0.38} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.20"]
[White "Kamara, Ansumana"]
[Black "Njoroge Martin"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "1899"]
[BlackElo "1965"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,132,0,1,-7,-3,-16,5,-2,94,81,133,73,78,66,96,26,71,0,63,25,114,109,105,7,0,0,0,0,0,-12,0,-67,618,608,489,237,116,0,603,-914,0,0,376,376,376,372,367,364,364,362,341,339,317,314,391,391,384,384,377,351,310,12,12,12,12,12,12,12,12,12,12,5,5,0,0,0,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,0,5,5,5,5,5,5,5,0,5,0,0,0,5,5,5,5,5,5,5,0,5,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. a3 b5 8. f3 {B43: Sicilian: Kan Variation: 5 Nc3.} Bb7 9. Qd2 {9.Qd2 scores better than 9.Be2.} Be7 10. g4 d6 (10... Nc6 $11) 11. O-O-O $16 Nbd7 (11... Nfd7 $142) 12. h4 ({White should play} 12. g5) 12... Nb6 13. h5 {[#]} Nfd7 $146 ({Predecessor:} 13... Nc4 14. Bxc4 Qxc4 15. Nb3 Qc7 16. g5 Nd7 17. g6 O-O-O 18. Rhg1 Ne5 19. gxf7 Nc4 {0-1 (52) Pushkarenko,V (1757)-Petrosyan,A Dagomys 2009}) 14. Kb1 (14. Ncxb5 $16 axb5 15. Nxb5) 14... Rc8 15. g5 (15. Ndxb5 $16 axb5 16. Nxb5) 15... d5 (15... Ne5 $1 $11) 16. Bd3 b4 (16... Ne5 $11 {remains equal.}) 17. axb4 Bxb4 {[#]} 18. g6 (18. Ncb5 $1 $16 {[%cal Rb5c7][%mdl 512]} Bxd2 19. Nxc7+ {[%mdl 64] Discovered Attack} Rxc7 20. Bxd2) 18... Bxc3 $11 19. gxf7+ (19. Qxc3 {is more complex.} Qxc3 20. bxc3 Na4 21. gxf7+ Kxf7 22. Ne2) 19... Kxf7 20. bxc3 Na4 21. c4 {exd5 is the strong threat.} dxc4 22. Nxe6 Kxe6 $4 {[%mdl 8192] [#]} (22... Qe5 23. Bd4 $19) (22... Qb8 $15 23. Ba7 Qe5) 23. Bxc4+ $1 $18 {[%mdl 512]} Ke7 {[#] White should prevent ...Rhd8.} 24. Qb4+ ({Less strong is} 24. h6 g6 $14) (24. Rhg1 $142 $1 g6 (24... Ke8 25. Rxg7) 25. hxg6) 24... Ndc5 {Strongly threatening ...Rb8.} 25. Bb3 (25. h6 $16 g6 26. Bb3) 25... Rb8 $2 {[%mdl 8192]} 26. Bxa4 $4 {[%mdl 8192] [#]} (26. Qc4 $18 Nc3+ 27. Qxc3) 26... Bxe4 $1 {[%mdl 512]} 27. Rd7+ $1 $11 {[%mdl 64] Overworked Piece} Qxd7 $4 {[%mdl 8192]} (27... Ke6 $11 28. Bxc5 Rxb4+ 29. Bxb4 {[#]} Bxc2+ $1 {[%mdl 576] Double Attack} 30. Ka1 Qe5+ 31. Ka2 Re8 $1) 28. Bxc5+ $18 Kf6 {( -> ...Qxa4)} 29. Bxd7 {White wants to mate with Bb6.} Rxb4+ 30. Bxb4 Rb8 31. fxe4 Rxb4+ {[%mdl 4096] Endgame KRB-KR} 32. Kc1 Rxe4 33. Rf1+ Ke7 34. Bf5 Re5 35. Bxh7 Rxh5 36. Bg6 Rg5 37. Rf7+ $2 (37. Bf5 $18) 37... Ke6 $1 $11 {The position is equal.} 38. Rxg7 {Threatens to win with Bf7+.} Kf6 39. Ra7 Kxg6 40. Rxa6+ {KR-KR} Kf7 41. Kb2 Ke7 42. c4 Rg3 43. Ra3 Rg2+ 44. Kb3 Kd6 45. Ra6+ Kc5 46. Ra5+ Kc6 47. Kc3 Rg1 48. Rh5 Rc1+ 49. Kb3 Rb1+ 50. Kc2 $1 {[%cal Rc2b1]} Rg1 51. Rd5 Rg3 52. Rd3 (52. Rb5 {is interesting.} Rg2+ 53. Kb3 Rg3+ 54. Kb4 Rg2 55. Rc5+) 52... Rg4 (52... Rg1 {seems wilder.} 53. Kc3 Rh1 54. Re3 Rc1+ 55. Kd3 Rd1+) 53. Kc3 Rg1 54. Kb3 Rb1+ 55. Kc3 Rh1 56. Kb4 Rb1+ 57. Rb3 Rh1 (57... Rc1 {with more complications.} 58. Ra3 Rb1+ 59. Kc3 Rc1+ 60. Kd4 Rd1+) 58. Rb2 Rg1 59. Rb3 Rf1 60. Rd3 Rb1+ 61. Kc3 Rc1+ 62. Kd4 Rh1 63. Rd2 Rh4+ 64. Kc3 Rh3+ 65. Rd3 Rh1 66. Kb4 Rb1+ {White used his chance.  Weighted Error Value: White=0.49/Black=0.53} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.22"]
[White "Maazouzi, Youssef"]
[Black "Singe, Philip Mbawala"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1857"]
[Annotator "NA RC"]
[PlyCount "130"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:09]} 2. Nf3 {[%emt 0:00:02]} Nf6 {[%emt 0:00:02]} 3. Nxe5 {[%emt 0:00:03]} d6 {[%emt 0:00:03]} 4. Nf3 {[%emt 0:00:02]} Nxe4 {[%emt 0:00:02]} 5. d4 {[%emt 0:00:02]} d5 {[%emt 0:00:02]} 6. Be2 {[%emt 0:00:14]} Nc6 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:04]} Be7 {[%emt 0:00:01]} 8. Re1 {[%emt 0:00:15]} O-O {[%emt 0:00:03]} 9. h3 {[%emt 0:00:21]} Bf6 {[%emt 0:00:03]} 10. c3 {[%emt 0:00:09]} Re8 {[%emt 0:00:27]} 11. Nbd2 {[%emt 0:00:07]} Ne7 {[%emt 0:00:17]} 12. Bd3 {[%emt 0:00:38]} Nxd2 {[%emt 0:00:03]} 13. Bxd2 {[%emt 0:00:07]} Ng6 {[%emt 0:00:02]} 14. Qc2 {[%emt 0:00:19]} c6 {[%emt 0:00:21]} 15. Rxe8+ {[%emt 0:00:08]} Qxe8 {[%emt 0:00:03]} 16. Re1 {[%emt 0:00:02]} Qd8 {[%emt 0:00:02]} 17. Bxg6 {[%emt 0:01:16]} hxg6 {[%emt 0:00:05]} 18. Ne5 {[%emt 0:00:02]} Bf5 {[%emt 0:00:06]} 19. Qb3 {[%emt 0:00:44]} Qb6 {[%emt 0:00:06]} 20. Qxb6 {[%emt 0:01:19]} axb6 {[%emt 0:00:04]} 21. a3 {[%emt 0:00:42]} Be4 {[%emt 0:01:36]} 22. f3 {[%emt 0:00:19]} Bf5 {[%emt 0:00:03]} 23. g4 {[%emt 0:00:59]} Be6 {[%emt 0:00:06]} 24. Kg2 {[%emt 0:00:10]} Bh4 {[%emt 0:00:09]} 25. Re2 {[%emt 0:00:19]} Be7 {[%emt 0:00:30]} 26. Kg3 {[%emt 0:01:28]} Bd6 {[%emt 0:00:04]} 27. Kg2 {[%emt 0:01:02]} Re8 {[%emt 0:00:05]} 28. Bf4 {[%emt 0:00:08]} Bf8 {[%emt 0:00:31]} 29. Kg3 {[%emt 0:01:20]} Bc8 {[%emt 0:00:08]} 30. Re3 {[%emt 0:00:25]} Bd6 {[%emt 0:00:40]} 31. Kf2 {[%emt 0:02:07]} g5 {[%emt 0:00:40]} 32. Nd3 {[%emt 0:00:57]} Rxe3 {[%emt 0:00:16]} 33. Bxe3 {[%emt 0:00:03]} f6 {[%emt 0:00:03]} 34. b4 {[%emt 0:00:31]} Kf7 {[%emt 0:00:05]} 35. f4 {[%emt 0:00:19]} gxf4 {[%emt 0:00:11]} 36. Bxf4 {[%emt 0:00:08]} Bxf4 {[%emt 0:00:04]} 37. Nxf4 {[%emt 0:00:03]} g6 {[%emt 0:00:02]} 38. Kf3 {[%emt 0:00:18]} g5 {[%emt 0:00:05]} 39. Nd3 {[%emt 0:01:30]} Ke6 {[%emt 0:00:10]} 40. Kg3 {[%emt 0:00:17]} f5 {[%emt 0:00:09]} 41. gxf5+ {[%emt 0:00:03]} Kxf5 {[%emt 0:00:03]} 42. Nf2 {[%emt 0:00:12]} Be6 {[%emt 0:00:12]} 43. Kf3 {[%emt 0:00:21]} Kg6 {[%emt 0:00:06]} 44. Kg3 {[%emt 0:00:16]} Kf5 {[%emt 0:00:06]} 45. Kf3 {[%emt 0:00:02]} Bf7 {[%emt 0:00:04]} 46. Ke3 {[%emt 0:01:16]} Bh5 {[%emt 0:00:08]} 47. Nd3 {[%emt 0:00:33]} Be8 {[%emt 0:02:16]} 48. Ne5 {[%emt 0:00:32]} c5 {[%emt 0:00:05]} 49. Nd3 {[%emt 0:00:57]} c4 {[%emt 0:04:12]} 50. Ne5 {[%emt 0:00:15]} b5 {[%emt 0:00:59]} 51. Ng4 {[%emt 0:00:54]} Kg6 {[%emt 0:00:14]} 52. Ne5+ {[%emt 0:00:04]} Kh5 {[%emt 0:00:04]} 53. Nf3 {[%emt 0:00:21]} Bd7 {[%emt 0:00:06]} 54. Ng1 {[%emt 0:01:08]} Kh4 {[%emt 0:00:07]} 55. Nf3+ {[%emt 0:00:25]} Kh5 {[%emt 0:00:07]} 56. Ng1 {[%emt 0:00:10]} Bf5 {[%emt 0:00:02]} 57. Kf3 {[%emt 0:00:14]} Kh4 {[%emt 0:00:05]} 58. Kg2 {[%emt 0:00:12]} Be4+ {[%emt 0:00:05]} 59. Nf3+ {[%emt 0:00:24]} Bxf3+ {[%emt 0:00:05]} 60. Kxf3 {[%emt 0:00:02]} Kxh3 {[%emt 0:00:01]} 61. Kf2 {[%emt 0:00:14]} g4 {[%emt 0:00:03]} 62. Kg1 {[%emt 0:00:02]} Kg3 {[%emt 0:00:03]} 63. Kh1 {[%emt 0:00:02]} Kf2 {[%emt 0:00:03]} 64. Kh2 {[%emt 0:00:02]} g3+ {[%emt 0:00:02]} 65. Kh1 {[%emt 0:00:03]} g2+ {[%emt 0:00:02]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "8.23"]
[White "Monaheng Motlomelo"]
[Black "Ebersohn, Raymond Gerhard"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1538"]
[BlackElo "1726"]
[Annotator "NA RC"]
[PlyCount "56"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:12]} g6 {[%emt 0:00:05]} 3. Bc4 {[%emt 0:00:06]} Bg7 {[%emt 0:00:25]} 4. O-O {[%emt 0:00:04]} e6 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:15]} Ne7 {[%emt 0:00:12]} 6. a3 {[%emt 0:00:10]} O-O {[%emt 0:00:09]} 7. d3 {[%emt 0:00:11]} Nbc6 {[%emt 0:00:16]} 8. Rb1 {[%emt 0:00:06]} a6 {[%emt 0:00:35]} 9. Be3 {[%emt 0:00:27]} d5 {[%emt 0:00:07]} 10. exd5 {[%emt 0:00:22]} exd5 {[%emt 0:00:03]} 11. Nxd5 {[%emt 0:00:27]} Nxd5 {[%emt 0:00:05]} 12. Bxc5 {[%emt 0:00:05]} Re8 {[%emt 0:00:13]} 13. h3 {[%emt 0:00:14]} Be6 {[%emt 0:00:55]} 14. Re1 {[%emt 0:00:22]} Rc8 {[%emt 0:00:17]} 15. Bxd5 {[%emt 0:02:36]} Qxd5 {[%emt 0:00:23]} 16. Be3 {[%emt 0:00:08]} b5 {[%emt 0:00:21]} 17. b3 {[%emt 0:00:19]} Nd4 {[%emt 0:00:34]} 18. Nxd4 {[%emt 0:00:18]} Bxd4 {[%emt 0:00:04]} 19. c4 {[%emt 0:00:04]} Qd6 {[%emt 0:00:27]} 20. Qc1 {[%emt 0:04:39]} Bf5 {[%emt 0:00:10]} 21. g4 {[%emt 0:01:25]} Bxd3 {[%emt 0:00:27]} 22. Qd2 {[%emt 0:00:36]} Bxb1 {[%emt 0:00:15]} 23. Rxb1 {[%emt 0:00:11]} Rcd8 {[%emt 0:00:11]} 24. Rd1 {[%emt 0:00:06]} Rxe3 {[%emt 0:00:04]} 25. fxe3 {[%emt 0:00:18]} Bxe3+ {[%emt 0:00:02]} 26. Qxe3 {[%emt 0:00:03]} Qxd1+ {[%emt 0:00:02]} 27. Kg2 {[%emt 0:00:03]} Rd2+ {[%emt 0:00:03]} 28. Kg3 {[%emt 0:00:08]} Rd3 {[%emt 0:00:01]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.1"]
[White "Adly, Ahmed"]
[Black "Bellahcene, Bilel"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2615"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,68,24,25,13,0,-17,-10,0,0,2,-63,-43,-108,-103,-104,-113,-88,-19,-35,0,-20,0,-41,0,0,0,-85,-55,-100,-49,-56,-30,-57,-72,-63,-39,-54,-37,-39,-24,-27,-25,-27,-26,-20,-22,-49,-25,-22,0,0,0,0,0,0,15]} 1. d4 {Dolmatov,S} Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. c4 cxd4 7. Qxd4 Nc6 $1 {7...Nc6 is better than 7...d6.} 8. Qf4 Ne7 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} 9. Ne5 Bxg2 10. Kxg2 Ng6 11. Nxg6 hxg6 {[#]} 12. Rd1 $146 (12. e4 $11) ({Predecessor:} 12. Nc3 Rc8 13. b3 d5 14. Rd1 Bb4 15. Bb2 Qe7 16. Rac1 e5 17. Qf3 Bxc3 18. Qxc3 {0-1 (41) Rashkovsky,N (2470)-Kharitonov,A Sverdlovsk 1984 MCL [Dolmatov,S]}) 12... Rc8 (12... g5 $5 13. Qxg5 Rc8 $11) 13. Be3 (13. h3 $15) 13... g5 $1 $17 {[%cal Rg5f4]} 14. Qxg5 Rxc4 15. Qb5 Qa8+ (15... Rb4 $17 16. Qd3 Ng4) 16. f3 $11 Qc8 17. Nd2 Rc2 18. Qd3 Rh5 ({Much worse is} 18... Rxb2 $6 19. Nc4 $16) 19. Bd4 Rc6 20. g4 {[#]} (20. Nb3 $11 {remains equal.}) 20... Nd5 $1 $17 {[%cal Rd5f4]} 21. e3 {[#]} (21. Qe4 Rh8) 21... Rh8 (21... Nb4 $1 $17 22. Qe2 Ra5) 22. Nf1 Nb4 23. Qe2 Nc2 24. Rab1 Nxd4 25. Rxd4 Bc5 26. Rc4 Bd6 27. Rbc1 Rxc4 28. Qxc4 Qxc4 29. Rxc4 $11 {[%mdl 4096] Endgame aiming for Rc8+. KRB-KRN} Ke7 30. b3 b5 31. Rc2 g6 {The position is equal.} 32. h3 a5 33. Nd2 Ra8 34. Ne4 a4 {Weighted Error Value: White=0.18/Black=0.14} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.2"]
[White "Zaibi, Amir"]
[Black "Amin, Bassem"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2381"]
[BlackElo "2693"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,64,-12,-7,-52,-63,-50,26,36,36,22,50,41,56,-52,-61,-68,-53,-69,-56,-122,-112,-114,-66,-93,-95,-111,-28,-21,-29,-29,-28,-24,-20,-25,-34,-27,-36,-29,-39,-108,-74,-70,-84,-77,-25,-118,-95,-81,0,-88,0,0,11,10,32,8,68]} 1. Nf3 f5 2. e4 fxe4 3. Ng5 d5 4. d3 Qd6 5. dxe4 h6 6. Nh3 {A04: Unusual lines after 1 Nf3 and King's Indian Attack.} dxe4 7. Nf4 Bf5 {[#]} (7... Nf6 $15) 8. Qd5 $146 {White has an edge.} ({Predecessor:} 8. Nc3 Nf6 9. Be3 e5 10. Nfd5 Nxd5 11. Qxd5 Qxd5 12. Nxd5 Bd6 13. O-O-O Nd7 14. h3 {0-1 (44) Vaganian,R (2625)-Georgiev,K (2595) Saint John 1988}) 8... Qxd5 9. Nxd5 Kd7 10. Bf4 {[%mdl 1024] White has compensation.} Nc6 11. Bb5 ({Reject} 11. Nxc7 e5 $15) ({Avoid the trap} 11. Bxc7 $2 e6 $19) ({White should play} 11. Nbc3 $14) 11... e6 $15 12. Ne3 ({Of course not} 12. Nxc7 Rc8 $17) 12... Bd6 $36 {[%mdl 2048] Black has some pressure.} 13. Bg3 a6 14. Ba4 (14. Bxc6+ $15 Kxc6 15. Nd2) 14... b5 $17 15. Bb3 Nd4 16. Nc3 Nf6 17. O-O-O c5 (17... Nxb3+ $17 18. axb3 Bg6) 18. Bxd6 $1 $11 Kxd6 19. Ne2 Ke5 20. f4+ $1 exf3 21. Nxd4 cxd4 22. Nxf5 Kxf5 23. Rhf1 $1 e5 24. Bf7 (24. c3 $15) 24... e4 $17 {Strongly threatening ...Rhf8.} 25. gxf3 e3 {[#] Threatens to win with ...e2.} 26. Rxd4 Rad8 (26... Rhd8 $17 27. Rfd1 Rxd4 28. Rxd4 a5) 27. Rb4 (27. Rfd1 $1 $11 e2 28. Rxd8 Rxd8 29. Re1) 27... Rd7 (27... Rd2 {is more complex.} 28. Re1 Rhd8 29. c3 a5 30. Rxb5+ Kf4) 28. Bb3 Re8 (28... Rd2 $17 29. c3 Rf2) 29. a4 {[#]} (29. c3 $11 {keeps the balance.}) 29... Re5 ({Black should try} 29... Nd5 $1 $17 30. Bxd5 Rxd5) 30. axb5 Rxb5 31. Ra4 a5 32. Re1 Re5 {Weighted Error Value: White=0.26/Black=0.29} (32... Rd2 $11) 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.3"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Beukes, Dante M"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2422"]
[BlackElo "2206"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,85,0,3,0,27,0,0,0,14,0,54,40,44,42,112,109,121,89,100,73,82,90,86,83,98,7,0,0,0,8,47,47,48,0,0,0,49,31,46,15,5,0,42,38,34,29,31,30,50,36,61,0,0,0,414,406,851,848,820,626,959,975,973,892,858,855,842,760,1269,1132,29989,29985,29985,29986,29991,29992,29994,29990]} 1. d4 Nf6 2. Bf4 d6 3. Nc3 Nbd7 4. Nf3 c5 5. e3 g6 6. h3 {A45: Trompowsky Attack.} Bg7 7. Be2 O-O 8. O-O {The position is equal.} a6 9. a4 b6 ({Black should try} 9... cxd4 $11 10. exd4 b6) 10. d5 $1 $14 Bb7 11. e4 {[#]} b5 $146 (11... Ne8 $14) ({Predecessor:} 11... Qc7 12. Re1 Rad8 13. Bh2 Rfe8 14. Bc4 Ne5 15. Nxe5 dxe5 16. Qe2 Ra8 17. Rad1 Red8 18. Kh1 Bh6 19. Qf3 Bg7 20. Qe3 Ne8 21. Bf1 Nd6 22. f4 exf4 23. Qxf4 Rf8 24. Be2 Rad8 {½-½ (24) Pirs,M (2523)-Staroske,U (2526) ICCF email 2017}) 12. axb5 $16 Qb6 13. Nd2 axb5 14. Bxb5 Rxa1 15. Qxa1 Ra8 16. Qd1 Qa5 17. Be2 (17. Qe2 $16) 17... Qb4 $11 18. Nc4 Ba6 19. Qa1 Bb7 20. Qb1 Nb6 21. Na2 Qb5 22. Nc3 Qb4 23. Nxb6 Qxb6 24. Re1 Qb4 25. Bd3 Nd7 26. Bg5 $36 {[%mdl 2048] White is more active.} h6 27. Bxe7 c4 28. Bf1 g5 $1 29. e5 $1 Bxe5 30. Rxe5 Nxe5 31. Ne4 f5 $2 {[%mdl 8192]} (31... Nd7 $11 {and Black has nothing to worry.}) 32. Bxd6 $18 {[%mdl 64] [#] Double Attack} Qb5 (32... Qa5 $142 33. Nf6+ (33. Bxe5 fxe4 34. Bxc4 Qa1 $16) 33... Kf7) 33. Nf6+ ({Weaker is} 33. Bxe5 fxe4 34. b3 Bxd5 $16) 33... Kf7 34. Bxe5 Bxd5 35. Qd1 Be6 36. Bc3 Ke7 37. b3 Rd8 38. Qa1 Qc6 39. Qa7+ Kd6 40. Qd4+ {White mates.} Ke7 41. Bb4+ Kf7 42. Qxd8 cxb3 43. cxb3 {Weighted Error Value: White=0.22/Black=0.58} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.4"]
[White "Silva, David"]
[Black "Bouzidi, Ahmed"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2258"]
[BlackElo "2163"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,149,28,25,39,34,34,18,35,43,35,0,16,12,4,14,11,14,16,9,12,0,0,-24,-23,-34,-22,-101,-20,-417,-429,-426,-410,-540,-505,-475,14,10,68,48,110,116,162,160,161,148,112,-47,-52,-48,-44,-85,-90,-103,-71,-120,-116,-123,-123,-123,-123,-123,-118,-126,-120,-108,-112,-114,-109,-130,-101,-125,-112,-116,-95,-116,-76,-206,-208,-224,-84,-84,-68,-74,-34,-28,-38,-41,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. b4 Bb6 7. a4 a6 8. O-O Be6 {8...h6 is the modern continuation. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 9. Nbd2 O-O 10. Qb3 d5 11. exd5 Bxd5 {[#]} 12. Bb2 $146 ({Predecessor:} 12. Re1 Re8 13. Ne4 Bxc4 14. Qxc4 Nxe4 15. Rxe4 Qd7 16. Be3 Bxe3 17. Rxe3 b5 18. Qa2 {½-½ (46) Kurmann,O (2437)-Ozturk,K (2250) Graz 2015}) 12... Bxc4 13. Nxc4 {Threatening a5.} Qxd3 14. Ncxe5 Nxe5 15. Nxe5 Qf5 16. c4 c6 17. Rae1 Rad8 18. Nf3 Rd3 19. Qa2 Ng4 {White must now prevent ...Rxf3.} 20. Bc1 (20. h3 $1 $11 {keeps the balance.} Nxf2 21. Rxf2 Rxf3 22. gxf3 Qg5+ 23. Kf1 Bxf2 24. Kxf2 Qh4+ {[%mdl 64] Double Attack} 25. Kf1 Qxh3+ {[%mdl 64] Double Attack} 26. Kg1) 20... Bc7 (20... Rxf3 $17 21. gxf3 Ne5 22. Rxe5 Qxe5) 21. h3 $2 {[%mdl 8192]} (21. Qe2 $1 $11) 21... Rxf3 $19 22. hxg4 (22. gxf3 Qxf3 23. Re5 Bxe5 24. Re1 Qxh3 25. Rxe5 Nxe5 26. f4 Nf3+ 27. Kf2 Qh2+ 28. Kxf3 Qxa2 29. f5 Re8 30. Kg3 Qxc4 31. Bg5 Qd3+ 32. Be3 Rxe3+ 33. Kg4 Re4+ 34. Kh5 Qh3+ 35. Kg5 h6#) 22... Qxg4 23. Qe2 {[#]} Qh4 $1 {[%csl Gc7][%cal Rh4h2][%mdl 512]} 24. g3 Qf6 (24... Bxg3 $1 $19 {[%csl Gg3][%cal Rh4h2]} 25. Kg2 Bd6) 25. Qe7 $11 Bd6 (25... Bb8 $11) 26. Qxf6 $1 $14 Rxf6 ({Black should play} 26... gxf6 $14 27. c5 Be5) 27. c5 $16 Bc7 28. Re7 {[%mdl 1024] White has strong compensation.} Rc8 {[#]} 29. Rd1 $1 Kf8 30. Red7 (30. Rdd7 $16 Bd8 31. Re2) 30... Re6 $15 31. Bb2 f6 32. Kf1 Re7 33. R7d3 Kf7 34. Rb3 Rd8 35. Rxd8 Bxd8 $17 {[%mdl 4096] Endgame KRB-KRB} 36. Bd4 Rd7 37. Be3 h5 38. Kg2 g5 39. b5 axb5 40. axb5 Ke6 41. Kf3 f5 42. Rb4 Be7 43. bxc6 bxc6 44. Rb6 Kd5 45. Ra6 {[#]} (45. Rb8 $17 {was necessary.}) 45... Rb7 $1 $19 ({Not} 45... Bxc5 $2 46. Ra5 $18) 46. Ra8 h4 (46... g4+ $19 {has better winning chances.} 47. Kg2 Bxc5 48. Rd8+ Kc4 49. Bxc5 Kxc5) 47. gxh4 $17 gxh4 48. Rh8 $1 Rb4 49. Rh5 $1 Ke5 50. Rh6 Rc4 51. Rxc6 {The position is equal.} f4 52. Bd2 Bxc5 53. Rh6 Be7 54. Rh5+ Ke6 55. Bxf4 Rc3+ 56. Be3 Bf6 57. Rh6 Kf5 58. Kg2 {Strongly threatening Rxf6+!} Rc4 59. Kh3 Rb4 60. Rh5+ Kg6 61. Ra5 Re4 62. Ra6 Kf5 63. Ra3 Rb4 64. Ra5+ Kg6 65. Ra6 Kf5 66. Ra5+ Kg6 67. Rd5 Ra4 68. Rd6 Kf5 69. Rc6 Rb4 70. Bd2 Ra4 71. Rc5+ Kg6 72. Rc6 Kf5 73. Bc1 Rb4 74. Be3 Ra4 75. Rc5+ {Weighted Error Value: White=0.27/Black=0.23} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.5"]
[White "Meftahi, Houssem"]
[Black "Paiva, Donaldo"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2110"]
[BlackElo "2230"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,106,36,27,41,18,31,0,0,0,0,0,10,0,56,27,57,19,47,50,39,40,62,37,46,21,26,25,41,29,24,0,0,0,0,-3,56,19,27,0,52,14,21,13,35,12,41,10,10,10,25,12,20,0,5,-15,0,-15,-15,-29,-31,-47,0,0,0,0,0,-31,21,0,0,0,0,0,0,0,0,-29,-15,-1082,-1052,-1041,-968,-1006,-1001,-29988,-29989,-29989,-29990,-29991,-29992,-29992,-29993,-29993,-29994,-29996,-29997]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O h6 {6...Bg6 is the modern continuation.} 7. Nbd2 Ne7 {B12: Caro-Kann: Advance Variation.} 8. Nb3 Bh7 9. Ne1 c5 {The position is equal.} 10. Nxc5 Nxc5 11. dxc5 Nc6 12. Nd3 {[#]} Be7 $146 (12... Bxd3 $11 13. Qxd3 Bxc5) ({Predecessor:} 12... Bxd3 13. Qxd3 Bxc5 14. Qg3 {½-½ (14) Nikolov,M (2577)-Spasov,V (2493) Kozloduy 2019}) 13. f4 O-O 14. a3 Bxd3 15. Bxd3 Bxc5+ 16. Kh1 f5 17. Qe1 a5 18. Be3 Qb6 19. Bxc5 Qxc5 20. g4 Ne7 21. h3 Rf7 22. Qg3 Raf8 23. Rg1 Kh8 (23... fxg4 $11 24. Qxg4 Nf5) 24. Raf1 Rg8 25. Qh4 g6 (25... Qd4 $11) 26. Rg2 ({Wrong is} 26. Qxh6+ $2 Rh7 $19) 26... Kh7 27. Rfg1 (27. Qe1 {is more complex.} d4 28. Qf2 b6 29. c4 dxc3 30. Qxc5 bxc5 31. Bc4) 27... Rgg7 (27... d4 {looks sharper.} 28. Kh2 b5 29. gxf5 Nxf5 30. Qe1 Qf8) 28. Qf2 Qc7 29. b4 axb4 30. axb4 Qc3 31. b5 Qb4 32. g5 h5 33. Rf1 Nc8 34. Qd2 Qc5 35. Rb1 Nb6 36. Qf2 Rc7 (36... d4 {is interesting.} 37. Rgg1 Rf8 38. Ra1 Rc8 39. Rgb1 Nd5) 37. Qxc5 Rxc5 38. Ra1 Nc4 39. Ra8 Rxb5 (39... Rg8 $15 40. Ra7 Rb8) 40. Bxc4 (40. Re8 {seems wilder.} Rc7 41. Rxe6 Rb1+ 42. Rg1 Rb4 43. Re8) 40... dxc4 $15 {[%mdl 4096] Endgame KRR-KRR} 41. Rd2 Rg8 42. Rd7+ Kh8 $1 43. Ra4 Rc8 44. Rd6 Rb2 45. Rxe6 $2 {[%mdl 8192] [#] Now White is beyond hope.} (45. c3 $11) 45... Rxc2 $19 46. Ra1 Rb2 47. Rc1 c3 48. Rxg6 c2 {Black mates.} 49. Kg2 Rb1 50. Rxc2 Rxc2+ 51. Kg3 Rb3+ 52. Kh4 Rcc3 {[%csl Gb3][%cal Rc3h3]} 53. Rh6+ Kg7 {[%csl Gb3][%cal Rc3h3] Weighted Error Value: White=0.41/Black=0.15} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.6"]
[White "Ortega Amarelle, Mariano"]
[Black "Amdouni, Zoubaier"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2463"]
[BlackElo "2229"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,60,0,3,-13,15,4,87,63,85,78,81,77,87,62,116,72,149,154,335,331,287,309,235,54,44,0,0,-116,-114,-196,-22,-17,76,-33,-28,-39,-46,-131,-123,-181,-175,-158,-152,-189,97,90,78,-1519,-1468]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. g3 dxc4 6. Bg2 b5 7. Ne5 Nd5 {7...a6 is more fashionable.} 8. e4 {E04: Open Catalan: 5 Nf3.} Nb6 {[#]} (8... Nb4 {feels hotter.} 9. O-O Nd7 10. Nxd7 Qxd7 11. Be3 h5) 9. O-O $146 ({Predecessor:} 9. Qh5 g6 10. Qf3 f6 11. Ng4 N8d7 12. e5 f5 13. Qxc6 fxg4 14. Qxe6+ Qe7 15. Qxe7+ Bxe7 16. Bxa8 Nxa8 17. Nxb5 {0-1 (41) Thybo,J (2577)-Grigorian,S (2405) Innsbruck 2020}) 9... Bd6 (9... Be7 $11 {keeps the balance.}) 10. Qg4 $16 {White is better.} Bxe5 11. dxe5 Kf8 12. Bg5 {[%mdl 1024] White has strong compensation.} Qc7 13. Rad1 N8d7 (13... Bd7 $14) 14. f4 Bb7 (14... h6 $142 15. Qh4 Kg8) 15. Qh4 {And now f5 would win.} Re8 $2 (15... Kg8 $16 {might work better.}) 16. f5 $18 Qxe5 17. fxe6 Rxe6 18. Bf4 $2 (18. Qh5 Qc5+ 19. Rf2 (19. Kh1 f6 $14) 19... Rf6 $11) ({White should play} 18. Bh3 $18 {Hoping for Bf4.} f6 19. Kg2) 18... Qc5+ $14 19. Kh1 Qe7 20. Bg5 (20. Bh3 $1 $11 Qxh4 21. gxh4) 20... f6 $17 21. Bh3 {[#]} (21. Be3 $17) 21... Re5 $2 (21... b4 $1 $19 {[%cal Rb4c3]} 22. Bxe6 Qxe6) 22. Bf4 $11 {aiming for Bxd7.} Bc8 {[#]} (22... Ke8 $1 $11) 23. Bxe5 (23. a4 $1 $16 {[%cal Ra4a5] Black must now prevent a5.} bxa4 24. Bxe5 Nxe5 25. Bxc8 Nxc8 26. Ra1 (26. Nxa4 Nd6 $11)) 23... Nxe5 $15 24. Bxc8 Nxc8 25. Qh5 (25. Ne2 $15) 25... Nd6 $17 26. Rf4 (26. b3 $17) 26... Ndf7 27. Qf5 Nd3 28. Qc8+ Qd8 $2 (28... Qe8 $19 29. Qb7 h5) 29. Qxc6 $16 Qe8 30. Qc5+ {[%mdl 8192]} Nxc5 {Weighted Error Value: White=0.67/Black=0.56} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.7"]
[White "Kayonde, Andrew"]
[Black "Hamzaoui, Khalil"]
[Result "1-0"]
[ECO "E67"]
[WhiteElo "2393"]
[BlackElo "1883"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,65,16,26,0,22,22,22,13,79,81,95,88,84,62,140,127,128,146,150,155,184,195,194,169,158,108,116,80,118,98,223,225,227,225,233,233,241,217,262,259,556,587,589,561,2057,1919]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Bf5 7. Nh4 Bc8 8. O-O e5 9. Nf3 exd4 10. Nxd4 Re8 11. h3 Nbd7 12. Qc2 {E67: King's Indian: Fianchetto: 6...Nbd7.} c6 13. Rd1 a5 {[#]} 14. Bf4 $146 {The position is equal.} ({Predecessor:} 14. b3 Nc5 15. e4 Qe7 16. Bg5 h6 17. Bxf6 Bxf6 18. Rd2 Bd7 19. Rad1 Rad8 20. f4 Bc8 21. a3 Qc7 22. Ndb5 {0-1 (60) Maasarani,M (2103)-El Jawich,A (2171) Beirut 2014}) 14... Ne5 (14... Qe7 $11 {keeps the balance.}) 15. c5 $16 d5 16. e4 Qe7 17. exd5 Qxc5 ({Black should play} 17... Nxd5 $14 18. Bxd5 (18. Nxd5 cxd5 19. Re1 Bd7 $14) 18... cxd5) 18. Bxe5 Rxe5 19. dxc6 bxc6 20. Nxc6 Bf5 21. Qa4 Ree8 22. Qb5 Qf8 23. Rd2 ({And not} 23. Nxa5 Rab8 $11) 23... a4 24. a3 h5 25. Rad1 Rac8 {This move loses the game for Black.} (25... Ne4 $16 26. Nxe4 Bxe4) 26. Qxa4 $18 Qc5 27. Qb5 Qxb5 28. Nxb5 {aiming for Nd6.} Ne4 29. Bxe4 Bxe4 {[#]} 30. Nd6 $1 Bf3 $2 (30... Bxc6 31. Nxc8 Rxc8) 31. Nxc8 {White is clearly winning.} Bxd1 32. Rxd1 Rxc8 33. Ne7+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.08/Black=0.46} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.8"]
[White "Oatlhotse, Providence"]
[Black "Joelson, Ricardo"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2190"]
[BlackElo "2017"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,98,19,18,20,26,0,2,2,87,86,85,70,70,0,56,64,56,14,25,29,16,40,36,11,14,0,0,0,39,41,38,-38,-45,-70,-74,-76,-72,-79,-74,-77,-73,-104,-87,-118,-116,-179,-123,-150,-150,-165,-150,-150,-97,-137,-131,-133,-133,-130,-114,-215,-211,-287,-286,-322,-320,-287,85,-352,-341,-352,-348,-409,-399,-592,-482,-1058,-1058,-1035,-996,-1037,-1037,-1016,-1012,-1011,-996,-985,-970,-949,-920]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. c4 e6 6. Qb3 Qb6 7. d3 {A11: English Opening: 1...c6.} Nbd7 8. Be3 Qxb3 9. axb3 {The position is equal.} Bc5 (9... a6 $11 {remains equal.}) 10. Bxc5 $16 Nxc5 11. b4 Ncd7 {[#]} 12. Nh4 $146 (12. b5 $14) ({Predecessor:} 12. b3 Ke7 13. Nbd2 a6 14. Ra2 h6 15. Rfa1 Rab8 16. Re1 Rhd8 17. e4 dxe4 18. dxe4 {0-1 (41) Schmitt,C (2025)-Bogucanin,M (1923) Heusenstamm 2016}) 12... Bg6 (12... Bg4 $1 $11) 13. Nxg6 $14 hxg6 14. Nc3 Ke7 15. b5 a6 16. bxc6 bxc6 17. Ra2 Rhb8 18. cxd5 cxd5 19. e4 d4 {[#]} 20. e5 $1 Nxe5 21. Ne2 ({White should try} 21. Bxa8 $14 dxc3 22. Bg2) 21... Ra7 $15 22. f4 Nxd3 {Hoping for ...Rd7.} 23. Nxd4 Nb4 24. Ra4 {And now Rxb4! would win.} Rc7 25. Rd1 Rb6 26. h3 Nfd5 27. Rd2 Ne3 28. Be4 (28. Ne2 $17) 28... Nf5 ({Black should play} 28... Rc1+ $19 29. Kf2 Nc4) 29. Bxf5 gxf5 30. Kf2 Kf6 31. Nf3 Rc4 (31... Nd5 $142 32. Ne5 Ke7) 32. b3 Rc7 33. Ne5 {and if Nd7+ works, White does fine.} Nd5 34. Rd3 Ke7 35. Kf3 {[#]} (35. Nc4 $17 {was called for.} Rbb7 36. Kf1) 35... Nb4 $1 $19 {[%cal Rb4d3]} 36. Re3 {[#]} Nc2 $1 {[%cal Rc2e3]} 37. Re2 Rxb3+ 38. Kf2 Rb6 (38... Nb4 $19 {Strongly threatening ...Rcc3.} 39. Nf3 Nd3+ 40. Kg2 Rcc3) 39. Nc4 $2 {[%mdl 8192] Now White is beyond hope.} (39. Rc4 $16 Rxc4 40. Nxc4) 39... Rb4 40. Rxb4 Nxb4 {[%mdl 4096] Endgame KRN-KRN} 41. Ne5 a5 42. Ke1 (42. Re3 {keeps fighting.}) 42... a4 {Black is clearly winning.} 43. Rd2 (43. Rb2 $142 a3 44. Rxb4) 43... a3 44. Rd1 a2 45. Kd2 Rc2+ 46. Ke3 Rb2 {...Nd5+ is the strong threat.} 47. Rd7+ Ke8 48. Ra7 a1=Q {[%mdl 64] Decoy} 49. Rxa1 Nc2+ {[%mdl 64] Double Attack.  Weighted Error Value: White=0.51/Black=0.30} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.9"]
[White "Wanyama, Harold"]
[Black "Simoes, Joao"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2312"]
[BlackElo "2228"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,159,5,5,5,-2,6,6,19,13,8,5,9,9,54,48,48,10,35,46,42,-10,47,-71,-77,-67,-59,-161,-132,-630,-640,-635,-629,-644,-260,-237,-153,-342,-314,-451,-458,-447,-433,-386,-95,-113,-79,-75,-73,-73,-80,-102,0,-41,0,0,0,0,0,-81,109,0,0,0,0,0,0,0,0,0,0,0,98,97,208,218,222,222,222,222,279,227,295,295,295,295,417,417,413,413,1612,1597,1182,1067,3112,3108,3093,3041,2877,2823,2725,1590,5206,4133,29970,5616,4618,0,29993,29994,29994,29984,29990,29986,29987,29986,29986,29984,29987,29985,29987,29984,29992,29985,29987,29988,29988,29986,29986,29987,29987,29988,29988,29987,29989,29990,29989,29983,29983,29984,29990,29991,29991,29990,29990,29991]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. Bg5 Nbd7 {[%cal Bb8d7,Bd7f6,Bf6e4][%mdl 32]} 6. e3 Qa5 7. Bxf6 Nxf6 8. Bd3 Bb4 9. Qb3 dxc4 {D52: Queen's Gambit Declined: Cambridge Springs Variation.} 10. Bxc4 Ne4 {[%cal Re4c3]} 11. Rc1 O-O {The position is equal.} 12. O-O Nxc3 13. bxc3 Ba3 14. Rb1 b5 15. Bd3 {[#]} Bd6 $146 ({Predecessor:} 15... Re8 16. Qc2 h6 17. c4 bxc4 18. Qxc4 Qc7 19. Rb3 Bd6 20. e4 e5 21. Rbb1 exd4 22. Qxd4 {½-½ (33) Rathke,J (1300)-Lichey,D (944) Verden 2000}) 16. e4 Rb8 17. e5 Be7 18. Rfe1 (18. c4 $14) 18... Bd7 (18... c5 $11) 19. Re4 (19. c4 $1 $14) 19... g6 $17 20. h4 c5 21. c4 (21. dxc5 $15 Rfc8 22. Rd4) 21... Bc6 $19 {Hoping for ...bxc4.} 22. d5 $2 {[%mdl 8192]} (22. Rf4 $17) 22... bxc4 23. Qxb8 exd5 (23... Rxb8 24. Rxb8+ Bf8 25. dxc6 $15) (23... cxd3 24. dxc6 Rxb8 25. Rxb8+ Bf8 26. Nd2 $15) 24. Rf4 cxd3 (24... Rxb8 $142 25. Rxb8+ Kg7) 25. Qb2 d4 26. Nd2 $2 (26. Rd1 $17) 26... Bd5 27. a3 (27. Nb3 $142 Qc7 28. Re1) 27... Qc3 28. Qc1 c4 29. Qd1 Qc2 $2 (29... Bxa3 $19 {has better winning chances.} 30. h5 Re8) 30. Rxd4 $17 Be6 31. Qxc2 dxc2 32. Rc1 c3 $1 33. Nc4 Bc5 (33... Bf5 $1 $17 34. Nd6 Rb8) 34. Rf4 h6 35. Rxc2 g5 36. hxg5 hxg5 37. Rf6 (37. Re4 $11 {keeps the balance.} Bf5 38. Rxc3 Bxe4 39. Nd2) 37... Bxc4 $2 (37... Bd4 $17 {stays on course.} 38. Rxe6 fxe6) 38. Rxc3 (38. Rc6 $1 $16 {[%cal Rc6c5]} Bd4 39. Rxc4 Bxe5 40. Kf1) 38... Rc8 $11 39. Rxc4 Bxf2+ $1 40. Kxf2 Rxc4 {[%mdl 4096] Endgame KR-KR} 41. Ra6 Re4 42. Ra5 Kg7 43. Kf3 Re1 (43... Rf4+ $11 44. Ke3 Kg6) 44. Kg4 $1 $16 (44. Rxa7 $6 Rxe5 45. Kg4 Kg6 $11) 44... Kg6 (44... Re2 $16) 45. Ra6+ $18 (45. Rxa7 Rxe5 46. Kf3 Rf5+ 47. Ke3 Rf4 $11) 45... Kg7 46. Kf5 (46. Rxa7 Rxe5 47. Kh5 Kf6 $14) 46... g4 47. g3 $1 (47. Kxg4 $6 Rxe5 48. Rxa7 Kf6 $16) (47. Rxa7 $6 g3 $16) 47... Re3 {[#]} 48. Kf4 {[%cal Rf4e3]} ({Less strong is} 48. Rxa7 Rxg3 49. e6 Re3 $14) (48. Kxg4 Rxe5 49. Rxa7 Kf6 $16) 48... Re1 49. Rxa7 ({Weaker is} 49. Kxg4 Rxe5 50. Rxa7 Kf6 $16) 49... Kf8 50. a4 ({But not} 50. Kxg4 $6 Rxe5 51. a4 Rc5 $16) 50... Kg7 (50... Rf1+ {was necessary.} 51. Kxg4 Re1) 51. a5 Kg6 52. Ra6+ Kg7 (52... Kh5 $142 53. Ra8 Kg6) 53. Rb6 Ra1 54. a6 Ra5 55. e6 {e7 would kill now.} fxe6 56. Rxe6 Ra4+ 57. Kf5 Kf7 58. Rb6 Kg7 59. Rb7+ Kh6 60. a7 Ra6 61. Rb6+ $2 Rxb6 $4 {[%mdl 8192]} (61... Kh5 $11) 62. a8=Q {[%cal Ra8h8] KQ-KR. White mates.} Rb5+ 63. Kxg4 Rb4+ 64. Kh3 Rb6 65. Qf8+ Kg6 66. Qe8+ Kh7 67. Qf7+ Kh6 68. Qf4+ Kh7 69. Qe4+ Rg6 70. g4 Kg7 71. Qe5+ Kf7 72. g5 Re6 73. Qf5+ Ke7 74. Kg4 Re1 75. Qf6+ Ke8 76. Kh5 Rh1+ {[#]} 77. Kg6 $1 Rg1 78. Qe6+ Kd8 79. Qd6+ Ke8 80. Qb8+ {White used his chance.  Weighted Error Value: White=0.43/Black=0.56} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.10"]
[White "Seddaoui, Yamine"]
[Black "Miguel, Sergio"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2127"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,104,17,42,12,22,0,0,-28,-24,-43,-35,-61,-63,-88,-85,-91,-91,-100,-84,-127,-97,-113,-103,-166,-114,-189,-152,-164,-27,-148,-80,-168,-151,-210,-210,-209,-130,-123,-122,-268,-274,-257,-158,-158,-116,-118,-122,-323,-316,-306,-287,-917,-895,-1110,-1106,-1047,-666,-772,-727,-704,-711,-863,-839,-831,-827,-825,-807,-793,-791,-789,-789,-767,-740,-731,-717,-750,-735,-751,-752,-749,-744,-730,-718,-8420,-10665,-29967,-29971,-29980,-29980,-29982,-29983,-29983,-29983,-29984,-29984]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Qd6 6. Na3 Be6 7. b3 {C68: Ruy Lopez: Exchange Variation, sidelines.} O-O-O 8. Bb2 f6 {[#]} 9. d3 $146 {The position is equal.} ({Predecessor:} 9. Qe2 Qd7 10. Nc4 c5 11. d3 Ne7 12. Rfd1 Nc6 13. c3 g5 14. Rd2 g4 15. Ne1 {0-1 (44) Antal,T (2231)-Csire,B (1897) Dunaujvaros 2011}) 9... c5 10. Nc4 Qd7 11. a4 Ne7 12. Qe1 Nc6 13. Na5 Nb4 14. Qc3 h5 15. Ba3 h4 16. Nc4 Kb8 17. Ne3 (17. h3 $17) 17... g5 $19 18. Rfd1 (18. h3 $17) 18... Be7 19. Qe1 Qe8 (19... g4 $19 20. Nd2 Nc6) 20. Qe2 (20. h3 $11 {remains equal.}) 20... Nc6 (20... g4 $142 21. Nd2 Nc6) 21. Rab1 (21. h3 $17) 21... g4 22. Ne1 (22. Nd2 $17) 22... Nd4 23. Qf1 Qh5 24. c3 Nxb3 25. Nf5 (25. Nd5 $17 {might work better.} Bxd5 26. exd5) 25... Bxf5 26. exf5 Qf7 27. Qe2 Rhg8 28. d4 exd4 29. cxd4 {[#]} (29. Qe6 $17 {is the only way for White.} Qxe6 30. fxe6) 29... Rxd4 30. Rxd4 Nxd4 31. Qxa6 (31. Qe4 b6 32. a5) 31... Qd5 32. Nd3 h3 {[%csl Gh3][%cal Rd5g2] [#]} 33. Ne1 Nc2 {White must now prevent ...Nxe1.} 34. Rxb7+ Qxb7 35. Qxb7+ Kxb7 36. Nxc2 {[%mdl 4096] Endgame KRB-KBN} Ra8 37. f3 gxf3 38. gxh3 Rxa4 39. Kf2 Bd6 40. Kxf3 Rf4+ 41. Kg2 Rxf5 42. Ne3 Rg5+ 43. Kf3 Bxh2 44. h4 Rg3+ 45. Kf2 Rh3 46. Bxc5 Rxh4 47. Be7 Re4 48. Bc5 Bd6 {Black mates.} 49. Kf3 Bxc5 50. Kxe4 Bxe3 51. Kxe3 c5 52. Ke4 Kb6 {Weighted Error Value: White=0.81/Black=0.30} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.11"]
[White "Calicoca, Wilton Inacio"]
[Black "Vermaak, Ashley Christopher"]
[Result "1-0"]
[ECO "B95"]
[WhiteElo "2122"]
[BlackElo "1751"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,111,0,42,20,36,21,35,20,39,0,0,0,19,0,0,0,0,9,90,0,85,79,75,70,181,173,199,141,205,214,206,195,201,109,242,209,246,238,317,302,411,406,468,447,501,490,494,493,472,452,451,430,603,593,570,546,1522,995,5522,504,813,810,800,767,758,709,626,415,490,470,29977,29978,29978,29979,29981,29982,29982,29983,29982,29983,29982,29981,29979,29980,29987,29988,29988,29989,29989,29990,29990,29991,29991,29992,29992,29993,29994,29994]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Qc7 9. Kb1 {B95: Sicilian Najdorf: 6 Bg5 e6, unusual White 7th moves.} Nbd7 10. f3 b5 11. a3 {White is slightly better.} Bb7 {[#]} 12. Ndxb5 $146 (12. g4 {seems wilder.} h6 13. Bh4 Rc8 14. Be2 Ne5 15. Bxf6 Bxf6 16. Ndxb5 axb5 17. Nxb5 Qb6 18. Nxd6+ Ke7 19. Qb4) ({Predecessor:} 12. h4 Nb6 13. h5 O-O-O 14. h6 g6 15. Qe1 Kb8 16. Bc1 Rc8 17. Bd3 Nfd7 18. Nb3 {1-0 (65) Korley,K (2441)-Andrews,T (2244) chess.com INT 2020}) 12... axb5 13. Nxb5 Qc6 {White must now prevent ...0-0.} 14. Nxd6+ Bxd6 15. Qxd6 Qxd6 16. Rxd6 h6 (16... Ke7 $1 $11 17. Rd4 e5) 17. Be3 (17. Bd2 $1 $16) 17... O-O-O (17... Ke7 $11 {remains equal.} 18. Rd4 e5) 18. Be2 $16 {[%mdl 1024] White has strong compensation.} Ne8 19. Rd3 Ndf6 (19... Nc7 $14) 20. Rc3+ Kb8 21. b4 (21. Bf4+ $1 $18 Ka7 22. Rc4) 21... Rc8 (21... e5 $16 {keeps fighting.} 22. Rc5 Nd7) 22. Bf4+ $18 Ka8 23. Kb2 Nh5 {aiming for ...Rxc3.} 24. Be3 (24. Rxc8+ $18 Bxc8 25. Be3) 24... Nd6 {This move loses the game for Black.} (24... Rxc3 $16 25. Kxc3 f5) 25. a4 e5 26. Rd1 Rxc3 27. Kxc3 Rc8+ 28. Kb3 Nxe4 29. fxe4 Bxe4 30. Bf3 Bxf3 31. gxf3 {[%mdl 4096] Endgame KRB-KRN} f5 32. Rd7 f4 33. Bf2 Re8 (33... e4 $142 34. fxe4 Nf6) 34. b5 e4 35. fxe4 Rxe4 36. b6 Re2 {[#]} 37. b7+ (37. a5 $142 $1 Nf6 38. Ra7+ Kb8 {[#]} 39. a6 $1) 37... Kb8 38. Bc5 {Threatening mate with Bd6+.} Re6 39. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} f3 40. Kb4 Nf6 41. Rxg7 Nd5+ 42. Kc4 Ne3+ (42... Nc7 $18 43. Rf7 h5) 43. Bxe3 {White mates.} Rxe3 {KR-KR} 44. a6 Re8 45. Rf7 Ka7 46. Kb5 Re5+ 47. Kc6 Re8 48. Kc7 Rg8 49. c4 h5 50. c5 h4 51. c6 h3 52. Kd7 Kxa6 53. Rxf3 Rg7+ 54. Ke6 Rg8 55. Rb3 Rg6+ 56. Kf5 {Weighted Error Value: White=0.44/Black=0.50} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.12"]
[White "Pascoal, Eduardo A"]
[Black "Ndegwa, Jackson Kamau"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2184"]
[BlackElo "2001"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,85,16,45,48,52,49,54,46,52,49,70,54,73,70,69,71,63,58,140,133,133,133,133,114,141,95,150,121,150,148,164,164,291,278,289,246,253,191,335,303,303,219,206,218,207,193,198,180,180,122,142,145,156,143,193,179,232,224,217,214,454,425,406,404,373,368,569,559,758,733,728,695,1396,1316]} 1. d4 d5 2. Nf3 c5 3. e3 Nc6 4. c3 Nf6 5. Bd3 cxd4 6. exd4 e6 7. Bg5 Be7 8. O-O {D03: 1 d4 d5 2 Nf3 Nf6 3 Bg5, including Torre Attack with early ...d5.} O-O 9. Nbd2 {[#]} Qb6 $146 ({Predecessor:} 9... a6 10. h3 b5 11. b4 Qc7 12. a4 bxa4 13. Rxa4 Bb7 14. Qa1 e5 15. dxe5 Nxe5 16. Nxe5 Qxe5 {0-1 (43) Muzychuk,M (2511)-Kosteniuk,A (2498) Hengshui 2019}) 10. Qb3 {White is slightly better.} Qxb3 11. axb3 Bd7 12. Ne5 {[#] aiming for Bxf6.} Rfd8 13. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} h6 14. Be3 a6 15. h3 Ne8 (15... Be8 $14) 16. Nxd7 $16 Rxd7 17. b5 Nb8 18. Nb3 Rc7 19. Ra2 g5 (19... Nd7 $142) 20. Rfa1 Nd6 21. Nc5 Nc4 22. Bxc4 Bxc5 (22... dxc4 $142 23. b6 Rc8) 23. dxc5 $18 dxc4 24. Ra4 Nd7 25. Rxc4 Rac8 (25... Nb6 $142 26. Re4 (26. cxb6 Rxc4 27. bxa6 bxa6 $16) 26... Nd5) 26. bxa6 bxa6 27. Rxa6 Nxc5 28. Bxc5 Rxc5 29. Rxc5 Rxc5 {[%mdl 4096] Endgame KR-KR} 30. Ra8+ Kg7 31. Rb8 ({Better is} 31. Kf1 $18) 31... Kf6 32. Kf1 Ke5 33. Ke2 Ke4 34. g3 f5 (34... Ra5 $142 35. Rb6 Ke5) 35. f3+ Kd5 36. Kd3 e5 $2 {[#]} (36... Kd6 37. c4 Ra5 38. Rb6+ Kd7) 37. Rd8+ Ke6 38. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Rc7 39. Re8+ Kf6 (39... Kd6 {was called for.} 40. Rh8 e4+ 41. fxe4 fxe4+ 42. Kd4 e3) 40. b5 {White is clearly winning.} Kf7 41. Rxe5 Kf6 42. f4 gxf4 43. gxf4 {Weighted Error Value: White=0.16/Black=0.44} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.13"]
[White "Bongo Akanga Ndjila, Barthelemy"]
[Black "Alberto, Manuel"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1803"]
[BlackElo "2167"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,21,36,27,21,25,27,25,31,9,20,6,11,18,27,26,36,32,58,50,58,65,43,60,53,44,54,-90,-91,-90,-37,-49,-39,-156,-142,-157,-155,-168,-65,-35,16,15,18,14,34,-34,-13,-7,-18,-93,245,270,673,168,29993,831,806,491,497,496,510,495,497,503,664,658,29999,640,619,624,610,587,922,907,5808,5700]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Ne4 4. Bf4 Bg7 5. e3 c5 6. Nbd2 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} Nxd2 7. Qxd2 Qb6 8. c3 {White has an edge.} d6 {[#]} 9. a4 $146 ({Predecessor:} 9. Be2 Nd7 10. O-O Nf6 11. h3 O-O 12. a4 Qc6 13. Bb5 Qc7 14. Qe2 Bf5 15. Bh2 {½-½ (35) Medar,Z (2229)-Banovic,I (2148) Kac 2012}) 9... Nc6 {[%cal Bb8c6,Bc6a5,Ba5b3,Bb3c1,Bc1d3][%mdl 32]} 10. d5 Na5 11. Bb5+ Bd7 12. Bxd7+ Kxd7 13. Qe2 Nb3 14. Ra3 Nc1 15. Qc2 {And now 0-0 would win.} Qxb2 $1 {[%mdl 64] Decoy} 16. Qxb2 ({But not} 16. Ne5+ $2 dxe5 17. Qxb2 Nd3+ 18. Ke2 Nxb2 $19) 16... Nd3+ {[%mdl 64] Double Attack} 17. Ke2 Nxb2 18. Rb3 (18. Nd2 $1 $14 {was the only good move.}) 18... Nxa4 $17 19. Rxb7+ Ke8 (19... Kd8 $17 20. c4 h6) 20. c4 $15 h6 21. Kd3 (21. Bg3 $15) 21... Nb2+ $17 22. Ke2 Nxc4 23. Rhb1 a5 (23... g5 $19 24. Bg3 Kd8) 24. Kd3 {[#]} Ne5+ ({Black should try} 24... Nb2+ $1 $15 25. R1xb2 (25. Kc2 g5) 25... Bxb2 26. Rxb2 g5) 25. Bxe5 $11 dxe5 26. e4 f5 27. Nd2 (27. d6 $14 Bf6 {[#]} 28. Nxe5 $1 {[%mdl 64] Decoy} Bxe5 29. Rxe7+ {[%mdl 64] Double Attack} Kd8 30. Rxe5 {[%mdl 64] Double Attack}) 27... a4 {With the idea ...Kf7.} 28. d6 Bf6 29. d7+ (29. Nc4 $11) 29... Kd8 $2 {[%mdl 8192]} (29... Kf7 $17 {keeps the pressure on.} 30. Ra1 Rhd8) 30. Nc4 $18 {[%mdl 1024] Black must now prevent Nb6. White has strong compensation.} a3 $2 (30... e6) 31. Nb6 $2 (31. R1b5) 31... Ra6 $2 (31... a2 $18 32. Ra1 Ra3+ 33. Kc4 e6) 32. Rb8+ (32. Rb5 $142 fxe4+ 33. Ke2 Rxb6 34. R5xb6 Re8 35. Ra6 e6 36. Ra8+ Ke7 37. dxe8=N+ Kf8 38. Nxf6#) 32... Kc7 33. Nd5+ Kxd7 34. Nxf6+ exf6 35. Rxh8 fxe4+ 36. Kxe4 Ra4+ 37. Kd5 {[%cal Rb1b7]} a2 38. Ra1 (38. Rb7# $142) 38... c4 {Now ...c3 and Black clings on.White is clearly winning.} 39. Rh7+ Ke8 40. Rc7 Kd8 41. Rxc4 Rxc4 42. Kxc4 {What a bad dream for Black.  Weighted Error Value: White=0.70/Black=0.75} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.14"]
[White "Likoko, Elvis"]
[Black "Gohil, Mehul"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1646"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "166"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,166,0,27,-39,-33,-57,-45,-44,-32,-64,-57,-75,-70,-90,-57,-55,-41,-102,-49,-69,-30,-48,-49,-128,443,448,451,436,440,-366,-368,-385,-185,-195,-182,-157,-160,-285,-277,-302,-298,-272,-191,-375,-342,-422,-412,-452,-444,-626,-663,-654,-659,-635,-631,-579,-632,-626,-583,-622,-603,-686,-370,-368,-361,-380,-373,-343,-222,-344,-315,-370,-362,-339,-285,-358,-277,-265,-68,-70,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-61,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,0,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-61,-61,-61,-61,-61,-61,-61,-61,-68,-68,-68,-68,0,-68,0,-68,0]} 1. e4 e6 2. Qe2 d5 3. d3 Nf6 4. Nf3 c5 5. g3 Nc6 6. Bg2 Be7 7. O-O b5 8. e5 {C00: French: Unusual White 2nd moves.} (8. exd5 $11 exd5 9. d4) 8... Nd7 $1 $15 9. c4 bxc4 10. dxc4 Ba6 11. Na3 O-O 12. h4 {[#]} Rb8 $146 ({Predecessor:} 12... Rc8 13. Rd1 Nd4 14. Qe1 dxc4 15. Nxd4 cxd4 16. Rxd4 Qc7 17. Bf4 Bc5 18. Re4 Bxa3 19. bxa3 {1-0 (32) Pina Vega,S (2241)-Becker,A (2205) Camaguey 1999}) 13. Re1 Qc7 14. b3 Rfc8 15. h5 ({White should play} 15. Nb5 $15 Bxb5 16. cxb5) 15... h6 (15... Nd4 $17 16. Qd1 Nxf3+ 17. Qxf3 Nxe5) 16. Bf4 Nd4 17. Nxd4 cxd4 18. Qg4 Bxa3 $2 {[%mdl 8192]} (18... Kh8 $1 $17 {keeps the pressure on.} 19. Nb5 Bxb5 20. cxb5 Rxb5) 19. Bxh6 $1 $18 {[%csl Gh6][%cal Rg4g7][%mdl 64] Discovered Attack} Bf8 {[#]} 20. Bxg7 {[%mdl 512]} Kh7 (20... Bxg7 $2 21. h6) 21. cxd5 $4 {[%mdl 8192]} (21. h6 $18 {is the narrow road to win. White threatens Bxf8 and mate.} Bb4 22. cxd5) 21... Bxg7 $19 22. dxe6 Nxe5 (22... fxe6 $142 23. Qxe6 Nc5 24. Qg6+ Kh8) 23. Qf5+ Kg8 $1 {Threatens to win with ...Bd3.} 24. h6 {[#]} Bd3 $1 {[%cal Rd3f5]} 25. Qg5 {[#]} (25. Be4 $17 {was necessary.} Bxe4 26. Rxe4) (25. exf7+ Qxf7) 25... f6 $1 26. Qxg7+ Qxg7 27. hxg7 Kxg7 28. Rad1 $2 {[#]} (28. e7 {was the only chance.}) 28... Rc3 $1 29. f4 Ng4 30. e7 Ne3 31. Rxd3 (31. Rc1 $142 Bc2 32. Bf3) 31... Rxd3 32. Bc6 Kf7 33. e8=Q+ Rxe8 34. Bxe8+ Kxe8 {[%mdl 4096] Endgame KRN-KR} 35. Kf2 Kd7 36. Ke2 Rc3 37. Kd2 Ng2 38. Re4 Rxg3 39. Rxd4+ Ke6 40. Ra4 Rf3 41. Rxa7 (41. Ke2 {was worth a try.} Rg3 42. Kf2) 41... Nxf4 42. b4 Nd5 43. b5 f5 44. b6 Kd6 ({Not} 44... Nxb6 45. Ra6 $15) 45. b7 Kc7 (45... Rf2+ $19 46. Kd3 Rb2) 46. Ra5 $15 Ne7 47. Rb5 Nc6 48. b8=Q+ Nxb8 49. Ke2 Rf4 {And now ...Nc6 would win.} (49... Ra3 {with more complications.} 50. Rxf5 Rxa2+ 51. Kf3 Ra3+ 52. Ke4 Ra4+) 50. Ke3 Re4+ (50... Ra4 {looks sharper.} 51. Rxf5 Rxa2 52. Rf7+ Kb6 53. Rf2 Ra4) 51. Kf3 Nc6 {White must now prevent ...Nd4+.} 52. Rxf5 Ra4 {...Nd4+ is the strong threat.} 53. Rf7+ Kd6 54. Ke3 Ne5 55. Rf6+ Kd5 {( -> ...Ng4+)} 56. Rf8 Ra3+ 57. Kd2 Rxa2+ 58. Kc3 Ra4 59. Rf5 Rc4+ 60. Kb3 Rd4 61. Rh5 Re4 62. Kc3 Re3+ 63. Kb4 Kc6 64. Rh6+ Kd5 65. Rh5 Re2 (65... Rd3 {is interesting.} 66. Rh6 Nc6+ 67. Ka4 Nd4 68. Rh8 Rf3) 66. Kc3 Rg2 67. Kb4 Rg4+ 68. Kc3 Ke4 69. Rh8 Rg3+ 70. Kb4 Rd3 71. Re8 Rd7 72. Kc3 Rc7+ 73. Kd2 Rc6 74. Re7 Kd4 (74... Rd6+ {is more complex.} 75. Kc3 Rd8 76. Re6 Rh8 77. Kc2 Kf5) 75. Re8 Nc4+ (75... Rd6 {keeps more tension.} 76. Rh8 Ke4+ 77. Ke2 Ra6 78. Rh4+ Kf5) 76. Ke2 Rh6 77. Rd8+ Ke4 78. Re8+ Ne5 79. Kf2 Rf6+ 80. Ke2 Ra6 81. Kd2 Rc6 82. Re7 $1 Kd4 83. Re8 $1 Ke4 {Black had all chances to win.  Weighted Error Value: White=0.43/Black=0.35} ({Better is} 83... Rh6 $15) 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.15"]
[White "Abdelazeez, Mohamed Abdalla"]
[Black "Simpson, Michael M"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "2214"]
[BlackElo "1995"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,94,52,38,68,1,23,-11,76,68,131,127,131,37,50,13,40,58,123,97,162,101,111,116,106,127,117,87,134,130,158,155,211,4,7,7,6,0,2,0,9,7,51,51,51,51,75,51,57,57,57,57,57,51,51,51,51,51,51,51,51,18,19,19,47,47,61,66,66,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000]} 1. d4 d5 2. c4 e5 3. dxe5 d4 4. a3 Nc6 5. Nf3 Nge7 6. e3 Nf5 {D07: Queen's Gambit: Chigorin Defence.} 7. exd4 (7. Be2 $14) 7... Ncxd4 {[#]} 8. Nxd4 $146 ({Predecessor:} 8. Be2 Nxf3+ 9. Bxf3 Nd4 10. Bd5 c5 11. Be3 Qb6 12. b4 Bg4 13. Qa4+ Bd7 14. Bxf7+ Kxf7 15. Qxd7+ {1-0 (31) Suarez,P (2031)-Salvat,M (1799) Nueva Helvecia 2019}) 8... Nxd4 (8... Qxd4 $11 9. Qe2 Be6) 9. Be3 $16 c5 ({Black should try} 9... Bc5 $14) 10. Nc3 Be6 11. Bxd4 (11. Bd3 $16) 11... cxd4 $14 12. Nb5 (12. Nd5 $5) 12... Bc5 13. b4 Be7 (13... a6 $14 14. bxc5 axb5 15. cxb5 Qd5) 14. Qxd4 O-O (14... Qxd4 $16 {was worth a try.} 15. Nxd4 a5) 15. Qxd8 (15. Nd6 $18) 15... Rfxd8 16. Nc7 Rac8 17. Nxe6 fxe6 18. Rd1 (18. Be2 {with more complications.} a5 19. Rb1 axb4 20. axb4 Rd4 21. O-O) 18... Rxd1+ 19. Kxd1 $16 {[%mdl 4096] Endgame KRB-KRB} a5 20. c5 ({Resist} 20. bxa5 Rc5 $16) 20... Rd8+ (20... Rf8 $16) 21. Ke2 $2 {[#]} (21. Kc2 $18) 21... axb4 $11 22. axb4 {g3 is the strong threat.} Rd4 23. g3 {next Bh3 is good for White.} Rxb4 24. f4 Rb1 25. Bg2 Rxh1 (25... Rb2+ {is interesting.} 26. Kf3 Bxc5 27. Rc1 b6 28. Bf1 Rxh2 29. Bc4 Kf7) 26. Bxh1 Bxc5 27. Bxb7 {KB-KB} g5 28. Kf3 gxf4 29. gxf4 Kf7 30. Kg4 Be3 31. h4 Bd4 32. Be4 Kg7 33. Bc2 h6 34. Bb3 Kf7 35. Kh5 Be3 36. f5 {Hoping for Kg4.} Bf4 37. Bxe6+ Ke7 38. Kg6 {[#] Strongly threatening f6+.} Bxe5 39. Kxh6 $2 {[%mdl 8192]} (39. h5 $14) 39... Kf6 {Mate.} 40. Kh7 Bg3 41. h5 Bf4 42. Bd7 Bg5 43. Kg8 Bh6 44. Kh7 Bg5 45. Be6 Bf4 46. Bc8 Be3 47. Be6 Bf4 {[%mdl 32768] Never resign too early!  Weighted Error Value: White=0.49/Black=0.18. An unexpected result.} 1/2-1/2

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.16"]
[White "Mwashe, Philip"]
[Black "Oliveira, Luciano"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1756"]
[BlackElo "2115"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,102,20,25,3,0,-2,-10,-7,0,0,0,0,0,-16,-12,-46,-22,-66,-39,-53,-54,-51,-21,-22,-16,-82,-22,-25,-19,-35,-8,-37,0,-37,-36,-347,-354,-354,-354,-366,-359,-357,-363,-337,-314,-337,-335,-381,-360,-369,-360,-362,-352,-347,-360,-349,-325,-447,-452,-483,-296,-297,-306,-368,-377,-373,-390,-29986,-29987,-29987,-29988,-29988,-5090,-2190,-1085,-1052,-1050,-1181,-1043,-1025,-1007,-939,-916,-1067,-1044,-29989,-29990,-29993,-29994,-29996,-29994,-29995,-29996,-29996,-992]} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be3 {B22: Sicilian: 2 c3.} (6. Be2 {looks sharper.} cxd4 7. cxd4 Nc6 8. Nc3 Qa5 9. Be3) 6... cxd4 7. cxd4 (7. Qxd4 {feels hotter.} Nc6 8. Qa4 Bxf3 9. gxf3 e6 10. Rg1) 7... Bxf3 8. Qxf3 {The position is equal.} Qxf3 9. gxf3 a6 10. Nc3 e6 {[#]} 11. Bd3 $146 ({Predecessor:} 11. d5 Nxd5 12. Nxd5 exd5 13. O-O-O Nc6 14. Rxd5 Be7 15. Rg1 Rd8 16. Rxd8+ Bxd8 17. Rxg7 {1-0 (48) Bortnyk,O (2598)-Motylev,A (2641) chess.com INT 2020}) 11... Nc6 12. a3 (12. Be4 $5) 12... Rd8 13. Ne2 Be7 14. O-O O-O 15. Rfd1 Rd7 16. Rac1 Rc8 17. Nc3 (17. Be4 $11) 17... Rdd8 (17... Rcd8 $17 18. Ne2 e5) 18. Na4 $11 Nd5 19. Be4 Rc7 20. Bxd5 Rxd5 21. Bf4 Bd6 22. Nb6 $2 {[%mdl 8192] White does not recover from this.} Bxf4 $19 23. Nxd5 exd5 24. Rc5 Rd7 25. b4 Bd6 26. Rc3 Re7 27. Re3 Kf8 28. Kg2 Ke8 29. Rb3 Kd7 30. b5 Na5 31. Rbb1 Bxa3 32. bxa6 bxa6 33. Rd3 Nc4 34. Ra1 Bd6 35. Rxa6 Re2 36. Rb3 Rd2 37. Rb7+ Ke6 38. Raa7 $2 {[#]} (38. f4 $19) 38... Ne3+ 39. Kh3 Rxf2 {[%csl Gd6][%cal Rf2h2][%mdl 64] Double Attack} 40. f4 Bxf4 (40... Rf3+ $142 41. Kh4 Rxf4+ 42. Kh3 Rf6 43. Re7+ Bxe7 44. Rxe7+ Kxe7 45. Kg3 Rf1 46. h3 f6 47. Kh2 f5 48. Kg3 Kf6 49. Kh2 f4 50. h4 h5 51. Kh3 Rh1#) 41. Re7+ Kd6 {[%csl Gf4][%cal Rf2h2] [#]} 42. Rxe3 Bxe3 {[%mdl 4096] Endgame KRB-KR} 43. Kg3 Rf6 44. Ra6+ Ke7 45. Ra7+ Ke6 46. Ra6+ Kf5 47. Ra5 Ke4 {Black mates.} 48. Ra7 Rg6+ 49. Kh3 f5 50. Re7+ Kf3 {[%cal Rg6h6]} 51. Rxe3+ Kxe3 {Weighted Error Value: White=0.63/Black=0.48} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.17"]
[White "Fernandes, Avelino"]
[Black "Sang, Ricky"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1887"]
[BlackElo "1991"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,143,0,0,-7,0,-4,-12,-20,-4,-28,2,-16,-11,-14,0,-81,-76,-97,-86,-112,-86,-83,-77,-112,-91,-98,-98,-87,-35,-37,-16,-28,0,-58,41,0,0,0,0,0,0,0,-18,-77,-35,-57,-38,-48,17,17,17,16,44,32,21,8,182,158,162,154,147,25,546,218,183,158,135,137,270,217,439,461,450,447,416,418,29986,29987,29987,956,953,905,1255,1177,1091,1072,2762,2427,29965,1754,1967,1473,29970,3022,29980,29976,29982,29981,29980,29980,29980,29981,29984,29985,29985,29986,29985,29986,29989,29987,29990,29990,29990,29990,29990,29991,29991,29991,29992,29993,29994,29993,29994,29994,29995,29994,29994,29995,29995,29994,29996,29994,29995,29996,29998,29999]} 1. e4 c5 2. Bc4 d6 3. c3 Nf6 4. d3 e6 5. Bb3 Be7 {[#]} 6. Nd2 $146 {B22: Sicilian: 2 c3.} ({Predecessor:} 6. Ne2 b5 7. Ng3 Bb7 8. O-O h5 9. h3 h4 10. Ne2 Nbd7 11. Bc2 Qc7 12. a4 bxa4 {½-½ (88) Savic,M (2491)-Lapcevic,M (2372) Kragujevac 2016}) 6... a6 7. h3 b5 8. a4 {The position is equal.} b4 9. Ngf3 O-O 10. O-O a5 11. Re1 Bb7 12. c4 (12. Nc4 $11) 12... Nc6 $17 13. Nf1 Nd4 14. Ba2 e5 15. Ne3 Nd7 16. Nd5 Bxd5 17. cxd5 f5 18. Bc4 f4 (18... fxe4 $17 19. Nxd4 cxd4 20. dxe4 Bh4) 19. b3 $15 Nf6 20. Bb2 h6 21. Rc1 ({Better is} 21. Bxd4 $11 cxd4 22. Bb5) 21... g5 ({Black should try} 21... Nxf3+ $1 $15 22. Qxf3 Qe8) 22. Nxe5 dxe5 23. Bxd4 cxd4 24. d6+ $1 Kg7 25. dxe7 Qxe7 26. Rc2 (26. g3 $1 $11 {keeps the balance.}) 26... Rfc8 27. Qf3 Ra7 28. g3 fxg3 (28... Rc5 $15) 29. fxg3 $11 Rf8 30. Rf1 Nh7 31. Qg4 {aiming for Rxf8.} Rxf1+ 32. Kxf1 {White wants to play Rf2.} Ra8 $2 (32... Rc7 $1 $11) 33. Qe6 Rf8+ 34. Kg2 Qc7 {[#]} 35. h4 (35. g4 $1 $16) 35... Qb8 $2 {[%mdl 8192]} (35... h5 $11 {and Black is okay.}) 36. Bb5 $2 (36. Qe7+ Kh8 {[#]} 37. Bg8 $1 {[%mdl 512]} Rxg8 38. Rc7 Qxc7 39. Qxc7 gxh4 40. Qxe5+ {[%mdl 64] Double Attack} Rg7 41. Qxd4) 36... Rf6 $18 37. Qd7+ Rf7 38. Qc8 $36 {[%mdl 2048] White has strong initiative.} Qd6 (38... Qxc8 $16 39. Rxc8 gxh4) 39. Rc6 Qe7 (39... Qf8 {was worth a try.} 40. Qxf8+ (40. Qe6 Rf2+ 41. Kh3 Nf6 $11) 40... Rxf8) 40. Bc4 Rf8 {[#]} 41. Rc7 Rxc8 42. Rxe7+ {[%mdl 4096] Endgame KRB-KRN} Kg6 (42... Kh8 $18 43. Rxe5 Ra8) 43. h5+ Kxh5 44. Rxh7 {KRB-KR} (44. Bf7+ $142 Kg4 45. Be6+ {[%mdl 64] Double Attack} Kh5 46. Bxc8 Nf6 47. Rxe5 Kg6 48. Rxa5 Kf7 49. Ra7+ Kf8 50. a5) 44... Kg6 45. Rb7 g4 46. Rb5 Rf8 47. Rxe5 Rf3 48. Rxa5 Re3 49. Rd5 (49. Rf5 $142 Re1 50. Rf1 Re3 51. a5 h5 52. a6 h4 53. gxh4 g3 54. Ra1) 49... h5 50. Rxd4 h4 51. gxh4 (51. Rd6+ $142 Kg7 52. gxh4 Re2+ 53. Kg3 Re1 54. a5 Rg1+ 55. Kf2 Ra1 56. a6) 51... Rh3 52. Rd5 {White mates.} Rxh4 53. Kg3 Rh1 54. Kxg4 Rg1+ 55. Kf4 Kf6 56. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Rf1+ 57. Ke3 Ra1 58. a6 Ke7 59. Kd4 Ra3 60. e5 Ra1 61. Rd6 Ra5 62. Rb6 Kd8 63. Rxb4 Kc8 64. Rb7 Ra1 65. b4 {[%cal Bb3b4,Bb4b5][%mdl 32]} Ra3 66. b5 Ra1 67. e6 Ra3 68. Kc5 Ra1 69. Kb6 Ra3 70. a7 Rxa7 71. Rxa7 {[%cal Ra7a8]} Kb8 72. e7 {[%cal Re7e8] Weighted Error Value: White=0.32/Black=0.98} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.18"]
[White "Cambando, Jose"]
[Black "Kamara, Ansumana"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2128"]
[BlackElo "1899"]
[Annotator "TA"]
[PlyCount "153"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,152,20,2,8,-12,23,18,23,19,32,25,64,56,63,60,72,73,186,202,238,213,228,183,188,98,125,96,276,258,325,325,341,283,262,283,350,340,496,377,374,345,350,364,464,502,547,386,384,367,387,382,533,515,535,535,534,560,562,575,565,558,808,804,786,770,856,814,772,738,1437,902,839,837,854,922,812,820,678,560,1504,1502,1196,1324,1420,1358,5643,5493,29979,29979,29979,29980,29981,29980,29983,29984,29982,29979,29976,29977,29978,29979,29973,29973,29988,29989,29991,29992,29993,29994,29994,29995,29995,29994,29996,29994,29994,29993,29994,29992,29992,29993,29993,29993,29993,29994,29994,29995,29995,29995,29995,29995,29995,29996,29996,29996,29996,29997,29997,29998,29998,29999,29999]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 e5 {6...e5 is better than 6...Nc6.} 7. e4 Nc6 {A24: English Opening vs King's Indian: Lines without ...Nc6.} 8. h3 Bd7 9. d3 a6 {The position is equal.} 10. Be3 {[#]} Qc8 $146 ({Predecessor:} 10... Nh5 11. Nd5 Ne7 12. Nxe7+ Qxe7 13. Qd2 Rfe8 14. Rac1 c5 15. a3 f5 16. exf5 gxf5 {1-0 (53) Biebinger,E-Krasnopeyeva,J (1934) Germany 2009}) 11. Kh2 Nh5 12. d4 exd4 13. Nxd4 Ne5 14. b3 c5 (14... Nf6 $16 {might work better.}) 15. Nde2 $18 Qb8 16. f4 Nc6 17. e5 Rd8 18. Qxd6 (18. exd6 $18 Qa7 19. Bf2) 18... Qxd6 $16 19. exd6 Re8 $2 {Black cannot hold the game after this.} (19... Nd4 $16) 20. Bxc5 $18 Rab8 21. Rad1 b6 22. Bd4 Nxd4 23. Nxd4 Re3 24. Nd5 Ree8 (24... Rxg3 $142 25. Ne2 Rxg2+ 26. Kxg2 Bc6) 25. Nc7 Re3 26. Nxa6 Rd8 27. Rf3 Re4 28. Rfd3 Ree8 29. Nc6 Bxc6 30. Bxc6 Re2+ 31. Bg2 Rxa2 32. Nb4 Rb2 33. d7 Nf6 34. Nc6 Rxd7 35. Rxd7 Nxd7 36. Rxd7 Rxb3 37. Bd5 Rb2+ 38. Kh1 Rb1+ 39. Kg2 Rb2+ 40. Kf1 b5 41. Rxf7 Kh8 42. Rb7 bxc4 43. Rxb2 Bxb2 44. Bxc4 Kg7 45. Kg2 h6 46. Kf3 Kf6 47. Ke4 g5 48. f5 h5 49. Nb4 h4 50. g4 {White mates.} Ke7 51. Kd5 Kf6 52. Nd3 Bc3 53. Nc5 Ba1 54. Kd6 Be5+ 55. Kd7 Bd4 56. Ne4+ Ke5 57. Nxg5 Kf4 58. Ne6+ {[%mdl 64] [#] Double Attack} Kg3 59. Nxd4 Kxh3 60. f6 Kxg4 61. f7 h3 62. Be6+ Kg3 63. Bxh3 {[%mdl 64] [#] Promotion} Kxh3 64. f8=R Kh4 65. Nb3 Kg5 66. Ke6 Kg4 67. Rf5 Kg3 68. Ke5 Kg4 69. Ke4 Kg3 70. Rf4 Kg2 71. Ke3 Kg3 72. Nd4 Kg2 73. Rf3 Kg1 74. Rf2 Kh1 75. Ke2 Kg1 76. Nf3+ Kh1 77. Rh2# {Weighted Error Value: White=0.21/Black=0.46} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.19"]
[White "Mosutha, Thuso"]
[Black "Singe, Philip Mbawala"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2036"]
[BlackElo "1857"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,129,47,47,8,27,23,37,41,41,33,35,5,6,0,23,-20,-15,-14,32,0,5,6,73,41,62,0,56,-12,83,-12,123,110,143,123,128,128,130,121,130,133,133,125,124,95,107,103,161,185,166,54,54,54,54,53,53,0,54,54,72,69,60,60,71,61,87,83,70,54,48,36,45,46,41,34,33,32,44,44,55,6,18,23,18,16,24,24,26,24,24,24,24,24,24,23,47,47,55,48,54,0,0,0,0,0,121,129,112,118,449,449,449,449,551,551,29984,29985,29985,29986,29985,29986]} 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nf3 Be7 5. O-O d6 6. Nc3 O-O 7. Rb1 {A29: English Opening: Four Knights Variation with 4 g3.} Be6 8. d3 Qd7 9. Ng5 {[#] White is slightly better.} Bg4 $146 ({Predecessor:} 9... h6 10. Nxe6 fxe6 11. e4 Nh7 12. f4 Bf6 13. Bh3 exf4 14. gxf4 Bd4+ 15. Kh1 Rf6 {1-0 (50) Khatnikov,A (1962)-Dzapshba,R Dagomys 2009}) 10. b4 h6 11. Nf3 a6 12. Re1 Bh3 13. Bh1 Rab8 14. a4 Nd8 15. b5 axb5 16. axb5 b6 (16... Ne6 $11) 17. Qc2 Ne6 18. Be3 (18. Bb2 $14) 18... Bg4 ({Black should play} 18... Ng4 $11) 19. Rec1 ({Better is} 19. Ra1 $14) 19... Nc5 (19... Nh7 $11) 20. d4 (20. Ra1 $16) 20... Bxf3 (20... Bf5 $11 21. Qd2 Bxb1 22. Rxb1 exd4 23. Nxd4 Rbc8) 21. Bxf3 $16 exd4 22. Bxd4 Ne6 23. Be3 Ng5 24. Bg2 Ng4 25. Bf4 Nf6 26. Bxg5 hxg5 27. Na2 {[%cal Bc3a2,Ba2b4,Bb4a6][%mdl 32]} Qe6 28. Nb4 Nd7 (28... Rbe8 $16) 29. Na6 $18 Rbc8 30. Qe4 ({White should try} 30. Bb7 $18) 30... Qxe4 $14 31. Bxe4 Nc5 32. Bf5 Ne6 33. Be4 Nc5 $1 {[%cal Rc5e4]} 34. Bc6 Bd8 35. Kg2 g6 36. Rc3 Kg7 37. Rd1 Bf6 38. Re3 Be5 39. Rf1 f5 40. f4 gxf4 41. gxf4 Bf6 42. Rff3 Rh8 43. Rh3 Rxh3 44. Rxh3 Bb2 45. Nxc5 bxc5 {[%mdl 4096] Endgame KRB-KRB} 46. Rb3 Bc1 47. Kg3 g5 48. fxg5 Bxg5 49. Ra3 Rf8 50. h4 Bf6 51. Ra7 {[#] Threatens to win with b6.} Rf7 $1 52. e4 Be5+ 53. Kf3 {Hoping for Bd5.} fxe4+ 54. Kxe4 Kf6 55. Kd5 (55. h5 $14) 55... Rh7 $11 56. h5 (56. Ba8 {with more complications.} Rxh4 57. Ra4 Rd4+ 58. Kc6 d5 59. Kxc5 Rxc4+ 60. Rxc4 dxc4 61. Kxc4 Ke6 62. Bd5+) 56... Rxh5 57. Be8 Rg5 (57... Rh8 $11) 58. Rxc7 $16 Bg3+ 59. Kc6 {[#] b6 is the strong threat.} Rg4 $2 {[%mdl 8192] Now Black is done in.} (59... d5 $16 {is more resistant.}) 60. Rf7+ $18 Ke5 61. Rf3 Bh2 62. Bf7 Rf4 63. Rxf4 {White mates.} Bxf4 64. Bd5 Bg5 65. b6 {Accuracy: White = 70%, Black = 69%.} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.20"]
[White "Njoroge Martin"]
[Black "Strovsky, Mikhail"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1965"]
[BlackElo "2164"]
[Annotator "TA"]
[PlyCount "139"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,139,47,49,13,21,12,30,30,38,17,47,0,0,-12,-1,-38,0,0,30,31,105,101,109,102,189,140,143,147,157,156,145,156,156,124,131,131,258,260,369,358,410,402,404,397,407,402,505,488,703,675,873,823,981,591,29996,501,471,481,447,431,423,412,573,573,552,564,652,630,619,618,618,514,514,514,484,506,556,524,631,629,662,644,576,615,664,624,570,572,537,781,655,776,694,673,796,795,773,893,830,792,29979,29980,29980,29981,29981,29982,29982,29983,29983,29984,29984,29985,29985,29986,29986,29987,29987,29988,29989,29990,29991,29992,29993,29992,29992,29993]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. Re1 Bf5 {The modern move.} 9. Nbd2 {[%cal Rd2e4] C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Nd6 $1 10. Nf1 Nd7 11. Ng3 {White has an edge.} Bg6 12. Bf4 Nf6 {[#]} 13. Bxd6 $146 ({Predecessor:} 13. Ne5 Re8 14. b3 Bf8 15. c4 c6 16. c5 Nde4 17. Ne2 Nd7 18. Nxg6 hxg6 19. f3 Ng5 20. Qd2 Ne6 21. Be3 b6 22. cxb6 Qxb6 {½-½ (22) Krieger,H (2268)-Franck,R (2211) Finsterbergen 2009}) 13... Bxd6 14. Ne5 c6 15. f4 Bxd3 16. Qxd3 Nd7 (16... g6 {looks sharper.} 17. c3 Re8 18. Re2 Qb6 19. h3 Re7) 17. Nf5 Bxe5 (17... Nf6 $14) 18. fxe5 $16 g6 19. Nd6 c5 (19... Qe7 $16 {was called for.}) 20. dxc5 ({Don't play} 20. Nxb7 $6 Qb6 $16) 20... Nxc5 21. Qxd5 {[%mdl 64] [#] Double Attack} Ne6 22. b3 Qb6+ 23. Kh1 Rad8 24. Qe4 Rd7 25. Qh4 {Black must now prevent Ne4.} Qc6 (25... Qd8 $16 26. Qe4 Qb6) 26. Ne4 $40 {[%mdl 128] Threatening mate with Nf6+! Black is in trouble.} Kg7 (26... f5 {keeps fighting.}) 27. Nf6 {[%csl Gf6][%cal Rh4h7][%mdl 64] Double Attack} h6 28. Nxd7 Qxd7 29. Qf6+ Kh7 30. Rad1 Qc6 31. Rd6 Qc5 (31... Qc8 $142 32. c4 Nc5) 32. Rf1 Ng5 33. Rd7 Kg8 34. Rd8 Ne4 35. Rxf8+ (35. Qxf7+ $142 Kh8 36. Rxf8+ Qxf8 37. Qxf8+ Kh7 38. Rf7#) 35... Qxf8 {[%mdl 4096] Endgame KQR-KQN} 36. Qf4 Ng5 37. h4 Ne6 38. Qf6 Qe8 39. h5 gxh5 40. Qxh6 Qe7 41. Qxh5 Ng7 42. Qh2 Qc5 43. Rd1 {White threatens Rd8+ and mate.} Ne6 44. Qg3+ Kf8 45. c3 Qa5 46. a4 {[%cal Ba2a4,Ba4a5][%mdl 32] aiming for Rd7.} Qb6 47. b4 Qa6 48. a5 Qe2 49. Re1 Qh5+ 50. Qh2 Qg5 51. Qh8+ Ke7 52. Qf6+ Qxf6 53. exf6+ Kxf6 {KR-KN} 54. Kh2 Nc7 55. c4 Ne6 56. Rd1 Ke7 57. Kg3 f5 58. Re1 {White mates.} Kd6 {[#]} 59. Rxe6+ $1 Kxe6 {KP-KP} 60. Kf4 Kf6 61. b5 Ke6 62. c5 Kd5 63. Kxf5 Kxc5 64. g4 Kxb5 65. g5 Kxa5 {KPP-KP} 66. g6 Ka4 67. g7 b5 68. g8=Q a5 69. Qa2+ Kb4 70. Ke4 {Weighted Error Value: White=0.43/Black=0.65} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.21"]
[White "Khalema, Sechaba"]
[Black "Ebersohn, Raymond Gerhard"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "1827"]
[BlackElo "1726"]
[Annotator "NA RC"]
[PlyCount "72"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:05]} 2. c4 {[%emt 0:00:49]} e6 {[%emt 0:00:02]} 3. Nf3 {[%emt 0:00:05]} Bb4+ {[%emt 0:00:03]} 4. Nbd2 {[%emt 0:00:04]} b6 {[%emt 0:00:09]} 5. e3 {[%emt 0:00:04]} Bb7 {[%emt 0:00:07]} 6. Bd3 {[%emt 0:00:04]} Ne4 {[%emt 0:00:21]} 7. O-O {[%emt 0:00:04]} Nxd2 {[%emt 0:00:04]} 8. Bxd2 {[%emt 0:00:05]} Bxd2 {[%emt 0:00:02]} 9. Nxd2 {[%emt 0:00:03]} f5 {[%emt 0:00:04]} 10. f4 {[%emt 0:00:03]} Qf6 {[%emt 0:00:12]} 11. b4 {[%emt 0:00:05]} O-O {[%emt 0:00:13]} 12. Be2 {[%emt 0:00:06]} Nc6 {[%emt 0:01:03]} 13. Bf3 {[%emt 0:00:15]} Nd8 {[%emt 0:00:30]} 14. Nb3 {[%emt 0:00:07]} Bxf3 {[%emt 0:01:05]} 15. Qxf3 {[%emt 0:00:05]} Nf7 {[%emt 0:00:02]} 16. a4 {[%emt 0:00:06]} Nd6 {[%emt 0:00:05]} 17. Rfc1 {[%emt 0:00:05]} Ne4 {[%emt 0:00:05]} 18. c5 {[%emt 0:00:08]} Rac8 {[%emt 0:00:39]} 19. Rc2 {[%emt 0:00:05]} c6 {[%emt 0:02:06]} 20. Qf1 {[%emt 0:00:15]} Rb8 {[%emt 0:01:37]} 21. b5 {[%emt 0:00:15]} Rfc8 {[%emt 0:00:30]} 22. Rac1 {[%emt 0:00:08]} cxb5 {[%emt 0:00:14]} 23. axb5 {[%emt 0:00:10]} bxc5 {[%emt 0:00:09]} 24. dxc5 {[%emt 0:00:08]} e5 {[%emt 0:00:08]} 25. Qd3 {[%emt 0:00:12]} exf4 {[%emt 0:00:23]} 26. exf4 {[%emt 0:00:04]} Qh6 {[%emt 0:02:00]} 27. g3 {[%emt 0:00:07]} Qe6 {[%emt 0:00:06]} 28. Ra1 {[%emt 0:00:48]} Rc7 {[%emt 0:00:31]} 29. Ra6 {[%emt 0:00:06]} Qe7 {[%emt 0:00:27]} 30. Rd6 {[%emt 0:01:38]} Nxd6 {[%emt 0:00:05]} 31. cxd6 {[%emt 0:00:11]} Qe1+ {[%emt 0:00:04]} 32. Kg2 {[%emt 0:00:03]} Rxc2+ {[%emt 0:00:03]} 33. Qxc2 {[%emt 0:00:03]} Qe4+ {[%emt 0:00:03]} 34. Qxe4 {[%emt 0:00:03]} fxe4 {[%emt 0:00:01]} 35. Nc5 {[%emt 0:00:03]} Rxb5 {[%emt 0:00:08]} 36. Nxd7 {[%emt 0:00:03]} Rd5 {[%emt 0:00:08]} 0-1

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.22"]
[White "Libe, Sofonea"]
[Black "El Kouri, Abdallah lamine"]
[Result "1-0"]
[WhiteElo "1509"]
[Annotator "NA RC"]
[PlyCount "1"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. c4 {[%emt 0:00:08]} 1-0

[Event "African Online-ch Open 2021"]
[Site "Online"]
[Date "2021.02.01"]
[Round "9.23"]
[White "Maazouzi, Youssef"]
[Black "Monaheng Motlomelo"]
[Result "1-0"]
[ECO "B73"]
[BlackElo "1538"]
[Annotator "NA RC"]
[PlyCount "83"]
[EventDate "2021.02.01"]
[EventType "swiss"]
[EventCountry "NET"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "1500+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:19]} 2. Nf3 {[%emt 0:00:04]} g6 {[%emt 0:00:03]} 3. d4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:02]} Bg7 {[%emt 0:00:03]} 5. Nc3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:04]} 6. Be3 {[%emt 0:00:08]} d6 {[%emt 0:00:06]} 7. Be2 {[%emt 0:00:19]} Nf6 {[%emt 0:00:04]} 8. O-O {[%emt 0:00:04]} h5 {[%emt 0:00:06]} 9. a3 {[%emt 0:00:37]} Bd7 {[%emt 0:00:05]} 10. Bf3 {[%emt 0:00:34]} Ng4 {[%emt 0:00:07]} 11. Nxc6 {[%emt 0:00:48]} bxc6 {[%emt 0:00:18]} 12. Bd2 {[%emt 0:00:21]} Ne5 {[%emt 0:00:13]} 13. Be2 {[%emt 0:00:24]} c5 {[%emt 0:17:22]} 14. Bg5 {[%emt 0:00:27]} f6 {[%emt 0:00:11]} 15. Bd2 {[%emt 0:00:11]} Bg4 {[%emt 0:00:13]} 16. h3 {[%emt 0:00:10]} Bd7 {[%emt 0:00:19]} 17. Nd5 {[%emt 0:00:06]} Nc6 {[%emt 0:00:32]} 18. c3 {[%emt 0:00:57]} f5 {[%emt 0:00:14]} 19. exf5 {[%emt 0:00:42]} Bxf5 {[%emt 0:00:04]} 20. Bg5 {[%emt 0:00:26]} O-O {[%emt 0:00:13]} 21. Bc4 {[%emt 0:00:22]} Kh7 {[%emt 0:00:09]} 22. Re1 {[%emt 0:01:23]} Bf6 {[%emt 0:00:37]} 23. Nxf6+ {[%emt 0:00:51]} exf6 {[%emt 0:00:09]} 24. Bf4 {[%emt 0:00:39]} Ne5 {[%emt 0:00:06]} 25. Bxe5 {[%emt 0:01:08]} fxe5 {[%emt 0:00:42]} 26. Bd5 {[%emt 0:00:15]} Rb8 {[%emt 0:00:07]} 27. b4 {[%emt 0:00:04]} Qf6 {[%emt 0:00:27]} 28. Qd2 {[%emt 0:01:16]} cxb4 {[%emt 0:00:20]} 29. cxb4 {[%emt 0:00:15]} Be6 {[%emt 0:00:24]} 30. f3 {[%emt 0:00:44]} Rb5 {[%emt 0:00:59]} 31. Bxe6 {[%emt 0:00:16]} Qxe6 {[%emt 0:00:05]} 32. Qe3 {[%emt 0:01:06]} Rf7 {[%emt 0:00:31]} 33. Rac1 {[%emt 0:01:28]} Re7 {[%emt 0:00:13]} 34. Rc6 {[%emt 0:01:00]} Qd7 {[%emt 0:00:23]} 35. Rec1 {[%emt 0:00:19]} Rb7 {[%emt 0:00:14]} 36. Qd2 {[%emt 0:01:48]} d5 {[%emt 0:00:21]} 37. Qg5 {[%emt 0:00:42]} Qe8 {[%emt 0:00:26]} 38. Rc8 {[%emt 0:00:57]} Qf7 {[%emt 0:00:35]} 39. R1c6 {[%emt 0:00:21]} Rbc7 {[%emt 0:00:54]} 40. Rf6 {[%emt 0:00:53]} Qg7 {[%emt 0:01:41]} 41. Ra8 {[%emt 0:01:04]} Rf7 {[%emt 0:00:15]} 42. Re6 {[%emt 0:01:51]} 1-0

