2:nd place in the Swedish Championship | CHESS AT THE BAG OF CATS

It took me half the tournament to come to my senses, but when I finally did, I played decently, and I also had a bit of luck. In the final round I misplayed a position that was slightly favorable for me, and then – in mutual time trouble – my opponent and I both missed an important detail on move 29 that could have decided the game in his favour:
   [Event "Swedish Championship"]  [Site "Helsingborg"]  [Date "2023.07.09"]  [Round "9"]  [White "Seo, Jung Min"]  [Black "Hillarp Persson, Tiger"]  [Result "0-1"]  [ECO "B81"]  [WhiteElo "2469"]  [BlackElo "2493"]  [EventCountry "SWE"]   1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 {This surprised me,  but it did not matter too much since I was expecting to be surprised.} e6 {  Before the round, Stellan Brynell prophesied that we would be happy with a  draw. Jung Min's choice of an opening tells a different story, and if I had  been happy with a draw, I would have played 6...e5. Ergo, both players are  aiming for a complex game.} 7. g4 h6 8. Bg2 Be7 (8... Nc6 9. Nxc6 bxc6 10. e5  Nd5 11. exd6 Bxd6 12. Ne4 {is a bit better for White.}) 9. Be3 Nc6 10. f4 Qc7  $6 {Sometimes i wonder what the point of all those preparations are, when I am  unable to remember how to get to the point where my preparations begin. This  is such case.} ({The whole idea of Black's set-up is to continue with} 10...  Nd7 {, here, threatening ...Bh4+, thus forcing White to play} 11. O-O) {  Jung Min thought for a long while before playing:} 11. Qd3 $5 {After this move  I thought for a very long time.} ({I expected} 11. Qe2 Nxd4 12. Bxd4 e5 13. Be3  Be6 14. O-O-O Rc8 (14... exf4 15. Bxf4 O-O 16. e5 dxe5 17. Qxe5 Qc8 18. g5 $1 {  is much better for White. The bishop on g2 is perfectly placed, so that it is  difficult for Black to solve his problems by inviting exchanges.}) 15. Kb1 b5 {  with a position where White is better, but where I have "complications" (to  quote Mikhail Gurevich). Jung Min's move leads to similar positions, but  taking on f4 will no longer be an option for me.}) 11... Nxd4 12. Qxd4 e5 13.  Qd2 $5 {The upside to this move is that I will not be able to play ...Be6 next,  but the downside is that g4-g5 becomes less of a threat, as I can now take on  f4 before taking on g5 (since the queen will hang with a check before the  g-pawn hits h8).} ({I expected} 13. Qd3 Be6 (13... exf4 $2 14. Bxf4 O-O 15.  O-O-O {is the main point of Qd3. With the d6-pawn under attack I do not have  the time to play ...Be6 or some other move that would benefit my position.})  14. f5 Bc4 15. Qd2 b5 {and now, since} 16. b3 {can be met with} b4 {I have few  problems. (An obvious conclusion for someone who has played Najdorf structures  for half a life time, and who learnt the basics from Daniel King's (amazingly  good) "winning with the Najdorf").}) 13... b5 (13... Be6 $6 14. f5 Bc4 15.  O-O-O {is a tempo better for White, than in the lines where the queen landed  on d3.}) 14. O-O-O (14. a3 Rb8 15. O-O-O O-O 16. g5 exf4 17. Bxf4 hxg5 18. Bxd6  Bxd6 19. Qxd6 Qxd6 20. Rxd6 Re8 $132) 14... b4 15. Ne2 (15. Nd5 Nxd5 16. exd5 (  16. Qxd5 Bb7) 16... exf4 17. Bxf4 O-O 18. Bxh6 $2 (18. Qxb4 f5 $1) 18... gxh6  19. Qxh6 Bd8 $17 {[%cal Gf7f6,Ga8a7]}) 15... a5 16. Kb1 O-O 17. Ng3 ({I  completely missed that} 17. g5 $1 hxg5 (17... exf4 18. Bxf4 hxg5 19. Bxg5) 18.  fxg5 Nh7 (18... Nd7 19. Ng3) 19. h4 {, is dangerous for Black, although the  position after} Be6 20. Ng3 a4 21. Nf5 Rfc8 22. Nxe7+ Qxe7 23. Qxd6 Qb7 24. a3  bxa3 25. Qxa3 Rc6 {is less than clear.}) 17... a4 18. Nf5 Bxf5 19. exf5 b3 $2 {  I felt I had to open up as many files as possible around White's king, but it  was a big misjudgement.} (19... Rac8 $1 20. Rhg1 Rfd8 21. Qf2 Nd7 {is slightly  promising for Black. I underestimated how sound my position will become the  moment I play exf4 and Bf6. At some point I will probably prefer to play a4-a3,  rather than b4-b3, as in the game.}) 20. cxb3 axb3 21. Rc1 Qb8 (21... bxa2+ $2  22. Ka1 Qb8 {and my a2-pawn is White's greatest protector.}) 22. a3 $1 {  Now I have no obvious way to attack White's king, while the b3-pawn is weak.} (  22. Bxa8 Qxa8 23. a3 Ne4 24. Qh2 Rb8 25. Rc7 Qd5 $1 26. Ka1 (26. Rxe7 Qd3+ 27.  Ka1 Qxe3) 26... Bf6 27. g5 hxg5 28. fxg5 Nxg5 29. Rhc1 Nf3 $132) 22... d5 23.  fxe5 Qxe5 24. Qd4 (24. Bf4 Ne4 25. Qe3 $1 Bg5 26. Qxe4 Qxe4+ 27. Bxe4 dxe4 28.  Bxg5 hxg5 29. Rhe1 g6 30. fxg6 fxg6 31. Rxe4 Rf3) 24... Qb8 25. Rc6 Re8 $1 26.  Rg1 Qb5 (26... Bxa3 27. bxa3 Rxa3 28. Bc1 Ra2) 27. Rb6 Qe2 28. Rxb3 Rab8 $4 (  28... Reb8 $1 29. Qd3 Qxd3+ 30. Rxd3 Bxa3 31. Bd4 Ne4) 29. Rxb8 $2 ({Both Jung  Min and I thought} 29. Qd3 Rxb3 30. Qxe2 Bxa3 {to be promising for Black, but  we missed...} 31. Re1 $1 {which leads to a completely winning position for  White.}) 29... Rxb8 30. Bf4 $4 ({White's only defence is} 30. Qc3 Rxb2+ 31.  Qxb2 Qxe3 32. Rd1 {, and although the position is objectively balanced after}  Ne4 {I would prefer to play this as Black, with so little time on the clock.} (  {or} 32... Bxa3)) 30... Bc5 31. Qd2 (31. Qxc5 Qxb2#) 31... Qxd2 {And with this  win I ended up scoring 1/4 in the first four rounds, and 4½/5 in the last  five, taking the second place. I could not be more happy.} 0-1
With this win I ended up on second place after Vitalii Sivuk, who played significantly better than the rest of us.