[Event "PER - USA 2021"] [Site "corr ICCF"] [Date "2021.06.04"] [Round "?"] [White "Cordova Reto, Edwin Leonel"] [Black "Schroeer, Egbert"] [Result "0-1"] [ECO "B23"] [Annotator "Schroeer,Egbert"] [PlyCount "66"] [Beauty "8180704749086"] [EventDate "2021.??.??"] [SourceTitle "ICCF to 2022"] [Source "ICCF ed Harding"] [SourceDate "2023.10.07"] [SourceVersion "3"] [SourceVersionDate "2023.10.07"] [SourceQuality "1"] [WhiteTeam "Peru"] [BlackTeam "USA"] [WhiteTeamCountry "PER"] {[%evp 0,66,18,13,66,45,45,44,40,-13,1,-20,-4,-4,-21,-21,19,20,21,10,-8,-44,-28,-42,-18,-50,-12,-61,-83,-95,-97,-76,-94,-98,-91,-92,-103,-126,-102,-119,-91,-131,-31,-64,-64,-72,-69,-124,-12,-14,0,0,-3,14,31,45,45,32,53,40,1,1,0,-340,-332,-350,-350,-814,-755]} 1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. g3 d5 5. d3 d4 6. Nce2 Nf6 7. Bg2 e5 8. Nf3 Bd6 9. O-O O-O {[%eval 25,31]} (9... Bg4 $142 {[%eval -13,31]}) 10. f5 $11 {B23: Closed Sicilian: Lines without g3.} b5 11. h3 {ok} c4 {ok} 12. g4 $1 {[#] The position is equal. White is slightly better.} Nd7 $146 ({Predecessor:} 12... cxd3 {[%eval 106,31] 12...a5 0.28} 13. cxd3 Nd7 14. g5 Nc5 15. Ng3 g6 {[%eval 180,34]} (15... a5 $16 {[%eval 117,30] is a better defense.}) 16. Ne1 {[%eval 76,32]} (16. Nh2 $18 {[%eval 180,34] is more deadly.}) 16... a5 $16 17. h4 Ra7 18. Rb1 a4 {1-0 Fellenger,A (2150)-Solovjov,A (2196) Irkutsk Region-ch 2012 (4)}) ({Predecessor:} 12... cxd3 13. cxd3 Nd7 14. g5 Nc5 15. Ng3 g6 16. Ne1 a5 17. h4 Ra7 18. Rb1 a4 {1-0 Fellenger,A (2150)-Solovjov,A (2196) Irkutsk Region-ch 2012 (4)}) 13. Qe1 {[%eval -33,32] Mistake; g5 is the right move} (13. g5 $14 {[%eval 37,29]}) (13. Rf2 $14 {[%eval 43,31]}) 13... cxd3 {inaccurate; Nb4?} (13... Nb4 {Double attack on a2/c2/d3} 14. Qd2 a5 (14... cxd3 15. cxd3 {Black blocks the center, Black is slightly better}) 15. Ng3 Ra6 (15... f6 16. a3 {[%eval -61,25]} (16. Rf2 $11 {[%eval -24,32] should be considered.}))) 14. cxd3 Ba6 15. Qd1 b4 $1 16. g5 Nc5 17. Ne1 Bb5 $11 {[%eval 90,27] Mistake} (17... b3 $11 {[%eval -6,32] keeps the balance. aiming for ...bxa2.} 18. a3 f6 19. h4 Be7 {[%eval 92,38]} (19... Kf7 $11 {[%eval 6,37] keeps the balance.}) 20. g6 $1 $16 {Hoping for Ng3.} Qe8 $1 21. h5 {[%eval -78,40]} (21. Ng3 $14 {[%eval 65,35] keeps the upper hand.} hxg6 22. fxg6 Qxg6 23. Nf5) 21... Kh8 {[%eval 0,32]} (21... h6 $1 $17 {[%eval -78,40]}) 22. Ng3) (17... b3 $11 {[%eval -19,36]}) 18. Ng3 $1 $16 a5 19. h4 b3 20. a3 {Inhibits Nb4.} Ra7 21. f6 {[#] fxg7 would now be deadly. And now fxg7 would win.} g6 22. h5 {[%eval 60,31]} (22. Bh3 $1 $16 {[%eval 135,26]}) 22... Qb6 {[%eval 110,30]} (22... Qc8 $14 {[%eval 60,31]}) 23. hxg6 {[%eval 45,31]} (23. Qg4 $1 $16 {[%eval 117,24]}) (23. Qg4 $16 {[%eval 110,30]}) 23... fxg6 $14 (23... hxg6 24. Rf3 $11) 24. Qg4 Nd8 (24... Nxd3 $2 {[%eval 328,29] 24...Nd8 0.36 perishes.} 25. Nxd3 (25. Qe6+ Raf7 $18) 25... Bxd3 26. Qe6+ Raf7 27. Qxd6 $18) (24... Nxd3 $2 25. Qe6+ Raf7 26. Nxd3 $18 (26. Qxd6 Nc5 $11)) (24... Bxd3 $2 25. Nxd3 Nd8 26. Nxc5 Bxc5 27. Rd1 $18) 25. Rf3 Rff7 26. Nh1 {[%eval 20,30]} (26. Nf5 $16 {[%eval 76,31]}) (26. Nf5 $16 {[%eval 75,29]}) 26... Na4 $11 27. Nf2 Rac7 {...Bxa3! is the strong threat.} 28. Qg3 {[%eval -68,29] maybe not so good, because Bd7} ({White should try} 28. Qh4 $11 {[%eval 0,37]}) (28. Bh3 $11 {[%eval 0,44]}) 28... Bd7 {Threatens to win with ...Bxa3! Black has more active pieces.} (28... Nc3 $5 29. Kf1 (29. bxc3 dxc3 30. Be3 Bc5 $17) 29... Kh8 $11) 29. Ng4 {[%eval -164,28]} ({Better is} 29. Qh4 {[%eval -71,32]}) ({Better is} 29. Qh4 $1 $15 {[%eval -57,32]}) 29... Bxg4 $19 30. Qxg4 Bxa3 {[%eval -68,35]} 31. Bd2 $2 {[%eval -565,33] [#] A tactical blunder and loses the game!} (31. bxa3 $17 {[%eval -73,34] lives longer.} b2 32. Bxb2 Qxb2 33. Rd1) ({But not} 31. Rxa3 Rxc1 32. Rxa4 Rxe1+ 33. Bf1 Rb1 $17) (31. bxa3 $15 {[%eval -68,35]} b2 32. Bxb2 Qxb2 33. Rd1) 31... Bxb2 {Black is clearly winning. Black is clearly winning.} ({Not} 31... Bb4 $2 {[%eval -214,36] 31...Bxb2 -5.49} 32. Bxb4 Qxb4 33. Rf2 $15) (31... Bb4 32. Bxb4 Qxb4 33. Rf2 $17) 32. Rxa4 Bc3 33. Rf2 {White resigned after Black b2} b2 {Weighted Error Value: White=0.56/Black=0.22 (precise) . Loses game: White=1 --- Mistake: White=5 Black=2 Inaccurate: White=3 Black=4 OK: White=10 Black=6 Best: --- Black=3. Weighted Error Value: White=0.60/Black=0.22 (precise) . Loses game: White=1 --- Mistake: White=6 Black=3 Inaccurate: White=1 Black=2 OK: White=7 Black=7 Best: --- Black=2 Strong: --- Black=1} 0-1