[Event "Altibox Norway Chess"] [Site "Stavanger"] [Date "2020.10.12"] [Round "13.3"] [White "Duda, Jan-Krzysztof"] [Black "Tari, Aryan"] [Result "1-0"] [ECO "C70"] [WhiteElo "2757"] [BlackElo "2633"] [Annotator "Bojkov,Dejan"] [PlyCount "53"] [EventDate "2020.??.??"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5 {Viktor Korchnoi used this delayed version of the Schliemann in one of his match games against Anatoly Karpov. Back then it had a reputation of a dubious line, suitable for one game only. This assessment will be hardly changed by this game, it seems.} 5. d4 exd4 6. e5 b5 ({Korchnoi's choice was} 6... Bc5 7. O-O Nge7 8. Bb3 d5 9. exd6 Qxd6 10. Re1 h6 11. Nbd2 b5 12. a4 Bb7 13. axb5 axb5 14. Rxa8+ Bxa8 15. Re6 Qd7 16. Qe2 d3 17. cxd3 Kd8 18. Nf1 Re8 19. Ng3 Nd4 {with irrational complications that eventually ended in a draw in Karpov,A-Korchnoj,V Moscow 1974}) 7. Bb3 Bb7 8. O-O Na5 9. Nxd4 ({Morozevich got the better chances after} 9. Bxg8 Rxg8 10. Nxd4 Qh4 11. Nc3 f4 $2 ({However, Black could have played} 11... O-O-O $5) ({Or } 11... Qg4 $5 {instead with good play in both cases.}) 12. Nf3 Qg4 13. a4 Nc4 14. axb5 Nxe5 15. Re1 d6 16. bxa6 Bxf3 17. Qxf3 Qxf3 18. gxf3 Kd7 {Morozevich, A (2659)-Sychev,K (2563) Moscow 2019}) 9... c5 {So far, Tari was blitzing whereas Duda was cautiously checking his moves. On his next choice the Polish GM spent more than 40 minutes.} 10. Nxf5 {Kramnik predicted that this will be White's choice.} (10. Bxg8 cxd4 11. Bb3 Nxb3 12. axb3 {yields nothing for White after either} Bc5 ({or} 12... Qh4)) 10... c4 11. Nc3 {N Three seconds were spent on this novelty. Duda speeds up his development, hoping to get to the enemy king while it's still in the center.} ({An earlier game could have seen Black doing more than fine after} 11. Qg4 Qb6 $1 12. Nd6+ Bxd6 13. exd6 O-O-O 14. Qxg7 Qxd6 {This is not bad.} ({However even better would have been} 14... Nf6 $1 15. Qxf6 Rhg8 {with a decisive attack after} 16. g3 Rdf8 17. Qc3 Rf3 $1) 15. Bg5 Rf8 ({Here} 15... Re8 $1 {was more logical:} 16. Qxh8 Qd5 17. f3 Qxg5 {when the threat of Re8-e2 is nasty.}) 16. Qxh8 Qd5 17. f3 Qxg5 { with an unclear game in Beikert,G (2414) -Buecker,S (2280) Sasbach 2018}) 11... Qb6 {Time for Tari to think. This is his best choice. The queen is out, ready to attack and Black may castle long if needed.} ({The premature capture of the bishop opens the file for the white rook and promises White more attacking chances:} 11... cxb3 12. axb3 Qb6 13. Re1 O-O-O 14. Nd6+ Bxd6 15. exd6 Nf6 16. Be3 Qc6 17. f3) 12. Nd5 ({More straightforward was} 12. Nd6+ Bxd6 13. exd6 { to which best seems} Qc5 14. Re1+ Kf8 15. Ne4 Qf5 16. f3 Re8 {with an unclear position.}) 12... Bxd5 {The first lenghty thought by Tari and a mistake at once.} ({He should have tied the white knights instead with} 12... Qc6 $1 13. Nf4 ({If} 13. Nde3 Nh6 $1 {is good for Black.}) 13... O-O-O {Then} 14. Nd4 { should be met with} Qc7 ({Not} 14... Qb6 15. Be3) 15. a4 b4 16. Re1 cxb3 17. cxb3 Kb8 {when White has compensation for the piece, but hardly any advantage.} ) 13. Qxd5 Qc6 14. Qd4 Qe6 ({There is no time to capture the bishop:} 14... cxb3 15. axb3 Nb7 {due to the strong} 16. e6 $1 dxe6 ({Or} 16... Qxe6 17. Nxg7+ Bxg7 18. Qxg7 Qf6 19. Re1+ Kd8 20. Bg5 {winning instantly.}) 17. Nxg7+ Kf7 18. Nh5 {with a decisive attack.}) 15. Nd6+ {Opening the e-file as soon as possible.} ({Also interesting seems the computer suggestion:} 15. Qe4 $5 d5 16. Qg4 Kd7 {Now both} 17. Qf4 {intending Nf5-d4} ({and the weird-looking} 17. Qd1 Qxe5 18. Ng3 {promise a serious attack to White.})) 15... Bxd6 16. exd6 Nf6 { After this move, there is no way back.} ({The only way to keep playing was} 16... Kf7 $1 17. Qc3 Nc6 18. a4 Nf6 ({Once again there is no time to capture the bishop:} 18... cxb3 19. axb5 Ne5 ({Or} 19... Nd8 20. Qf3+) 20. Re1) 19. Ba2 {The bishop is safe but Black at least consolidates after} Rhe8 {Next Tari would castle by hand and hope that the blocked white bishop can compensate for his pawn deficit.}) 17. Qc3 {A double attack. Black felt short by a move and could not collect the trapped bishop.} O-O ({After} 17... Nxb3 {White has a pleasant choice between} 18. Re1 ({and} 18. axb3 O-O 19. bxc4 {which is also extremely pleasant for White.}) 18... Nxa1 19. Rxe6+ dxe6 20. b3 {with an edge. }) 18. Qxa5 Ng4 ({Nothing changes} 18... cxb3 19. axb3 Qxd6 20. h3 ({Or even} 20. Qd2)) 19. Qc3 {Duda won material and consolidates his advantage. Tari's opening experiment failed.} ({Also good was the preliminary} 19. h3 Ne5 20. Qc3 ) 19... Rae8 ({Once again there are small tactics in case of} 19... Qxd6 20. Bxc4+ bxc4 21. Qxc4+ Kh8 22. Qxg4) 20. Bg5 ({Or} 20. Bxc4 bxc4 21. Bg5) 20... cxb3 21. Qxb3 {Two extra pawns are more than enough for the Polish GM to claim the win.} Qxb3 22. axb3 Re2 23. f3 Nf6 24. Rfc1 h6 ({Once again Black comes short by a move in the line} 24... Rc8 25. Bxf6 gxf6 26. Rxa6 Rcxc2 27. Rxc2 Rxc2 28. Ra7 Rxb2 29. Rxd7 Rxb3 30. Re7) 25. Kf1 Rfe8 26. Bxf6 gxf6 27. Re1 1-0
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