[Event "Chess.com"] [Site "Chess.com"] [Date "2022.02.07"] [Round "4"] [White "Oparin, Grigoriy"] [Black "Fedoseev, Vladimir"] [Result "0-1"] [ECO "B30"] [WhiteElo "2681"] [BlackElo "2704"] [Annotator "Bojkov,Dejan"] [PlyCount "27"] [EventDate "2022.??.??"] {[%evp 0,36,51,22,75,56,56,51,57,38,33,30,56,23,27,33,59,41,32,11,6,5,5,15,38, 1,20,20,14,-5,-2,-18,-9,-13,0,-99,-121,-161,-142]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 { Anti-Sveshnikov. The author of the system considered the lines that avoid the Sveshnikov the only lines playable.} e5 4. Bc4 d6 5. d3 Be7 {Now it is almost an Italian but with a black pawn placed on the c5-square. This certainly weakens the d5-spot, but the question is, can White profit from that?} 6. a4 ({ The more modest:} 6. a3 {is also possible as this recent top-GM game} Be6 7. Nd5 Nf6 8. O-O O-O 9. c3 Rb8 10. b4 b5 11. Nxf6+ Bxf6 12. Bxe6 fxe6 13. Be3 Qe7 14. Nd2 Bg5 {Grischuk,A (2778)-Maghsoodloo,P (2698) Chess.com INT 2021}) 6... Nf6 7. Bg5 Nd7 $5 {[%mdl 4] ( e4 c5 Nf3 Nc6 Nc3 Anti-Sveshnikov. The author of the system considered the lines that avoid the Sveshnikov the only lines playable. e5 Bc4 d6 d3} 8. Bxe7 {Now it is almost an Italian but with a black pawn placed on the c5-square. This certainly weakens the d5-spot, but the question is, can White profit from that $2 a4} ({The more modest: a3 is also possible as this recent top-GM game} 8. Be6 {Nd5} Nf6 9. O-O O-O {c3 Rb8} 10. b4 b5 {Nxf6+} 11. Bxf6 Bxe6 {fxe6 Be3 Qe7} 12. Nd2 {Bg5 Grischuk,A (2778) -Maghsoodloo,P (2698) Chess.com INT 2021}) 8... Nf6 $5 $146 {Bg5 Nd7 Not a novelty, and certainly a move to know in this line. The knight can control the d5-square; therefore, Fedoseev preserves it. It is also generally desirable for Black to swap off his dark-squared bishop. Bd2 That is the reason why Oparin keeps the dark-squared bishops alive. He did play this novelty though after a lengthy thought.} ({In the predecessor, Short got an interesting kingside play with: Bxe7} 8... Qxe7 9. Nd5 Qd8 10. c3 O-O 11. Nd2 Nf6 12. Nxf6+ Qxf6 13. Nf1 Qg5 14. Ne3 Kh8 15. h4 Qd8 16. g4 a6 17. Qf3 Be6 {but Black eventually held his own, Short,$146 (2690) -Illescas Cordoba,M (2591) Sestao 2010}) 9. O-O Nd5 $1 {Nb6 This is why the knight is kept alive. Nxb6 axb6 Black is getting ready for a kingside attack, and the move in the game does two things. It stabilizes the center and opens a file in case that White decides to hide his king there. c3 Kh8} {After O-O Kh8 would have been played anyway.} 10. b4 {Qe8 Thanks to the central stability, Fedoseev is ready to break open the kingside with f7-f5. His game seems far more straightforward and simpler.} b5 {Oparin finds a clever plan to counteract.} ({Castling does not seem appealing O-O due to} 10... f5 11. b5 Na5 {with a tempo $1} 12. Bxd5 f4 $1 {when Black is ready to throw all his kingside pawns forward and it is pretty one-sided.}) ({The immediate h4 is not good either due to} 10... cxb4 $1 {cxb4 Bg4}) {Nd8} 11. h4 $1 {That is White's point: he may also fight back for the kingside.} f5 12. h5 $1 ({Also interesting is} 12. exf5 Bxf5 13. Ng5) 12... Be6 $1 (12... h6 $5) ({Qb3 There is one serious issue that Oparin did not solve yet: where to hide his king. Black is obviously not worried about} 12... h6 {g6}) ({Qd7 Kd1 An attempt to hide his majesty on the queenside, but this is a mistake. Stronger is} 12... h6 {g6} 13. Bxd5 $1 {when White seems to keep things under relative control. The important detail is that} f4 {does not work that well due to} 14. d4) ({fxe4 dxe4 Bxc4 Qxc4 Qg4 Double attack. Qd3 And this makes things even worse. Instead Rh2 would not have been a defense due to Rxf3 gxf3 Qg1+ It is not clear what Oparin missed. Maybe something in the line Kc2 Qxg2 Nh4 Bxh4 Rag1 Did he simply calculate Qxf2 only when White is on top with Did White miss the simple retreat Qf3 Rxh4 Qxf2 Rhg4 Qf7 when Black has it all well defended $2 Rf1 c4 The alternative Qxg2 Ke2} 12... bxc4 $1 { is equally good.}) ({Qe3 Ne6 When the knight comes on the freshly created d3-outpost, the white king will have nowhere to hide. Rg1 Perhaps he should have kept this pawn alive at least} 12... h6) {Nf4 Kc1 Qxh5 Black won a pawn while building a huge positional advantage. The game is essentially over. Kc2 Qg6} 13. g3 $1 {Nd3 Nh4 Qe6 Nf5 The only active try, but Rxf5 Opens a crucial diagonal against the white king, and this quickly translates into a mating attack. exf5 Qxf5 g4 Nb4+ Kd1 Qc2+ Ke1 Qb2 Rc1 Nd3+ Ke2} Rf8 $1 {Bringing everybody into the action.} ({The move in the game is even stronger than the prosaic Nxc1+ Rxc1} 13... h6) ({f3 e4 d5 would do too. Rh1 Or Rcf1} 13... Nf4 { when the white king still has nowhere to hide. Kf2 Kd1 Qb3+} 14. Bh4) 14. exd5 {fxe4 Rf2+ Kd1 Qb3+ Rc2 Qb1+ Rc1 Nxc1 Qxf2 Nd3+ Ke2 Qxh1} 0-1