[Event "Reykjavik Kvika op"] [Site "Reykjavik"] [Date "2022.04.11"] [Round "8"] [White "Jarmula, Lukasz"] [Black "Sadhwani, Raunak"] [Result "1-0"] [ECO "B51"] [WhiteElo "2434"] [BlackElo "2628"] [PlyCount "87"] [EventDate "2022.04.06"] [EventType "swiss"] [EventRounds "9"] [EventCountry "ISL"] [SourceTitle "CBM 207 Extra"] [Source "ChessBase"] [SourceDate "2022.05.31"] [SourceVersion "1"] [SourceVersionDate "2022.05.31"] [SourceQuality "1"] 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 Ngf6 5. Nc3 g6 6. O-O Bg7 7. d4 cxd4 8. Nxd4 O-O 9. Bxd7 Bxd7 10. Qd3 {In choosing this line, I was influenced by the game Grischuk-Shankland 2022. The character of the line appealed to me: Objectively Black can equalize fully, but he needs to come up with an accurate and far from obvious sequence. Otherwise White can get a very pleasant bind, which happened in my game.} Rc8 ({In the abovementioned game, Shankland showed the precise equalizing line, and I can't help by think he was in his preparation:} 10... a6 11. a4 Ng4 $1 12. Nf3 {White stops the knight from appearing on e5. But now comes an impressive energetic sequence:} b5 $1 13. axb5 axb5 14. Rxa8 Qxa8 15. cxb5 Bxc3 $1 {This counterintuitive trade is the point. It makes the whole variation hard to find over the board.} 16. bxc3 Qa4 $11 {Black regained the pawn with full equality.}) 11. h3 {A natural move with the idea of stopping potential ...Ng4 sorties.} ({The strength of the ...Ng4 idea is well-illustrated by the line} 11. b3 Ng4 $1 12. Rb1 f5 $5 13. exf5 gxf5 $11 {with a highly double-edged, objectively balanced game.}) 11... a6 12. a4 Qa5 $6 {This move doesn't help Black to break up the Maroczy bind and Black starts suffering from lack of space.} (12... e6 $1 {with the idea of conducting the ...d5 break, was the equalizing move, e.g.} 13. Be3 Qc7 14. b3 d5 $1 15. exd5 exd5 16. Nxd5 Nxd5 17. cxd5 Qd6 $11 {and Black has managed to completely free up himself.}) 13. Be3 Bc6 $6 {According to the computer, Black should rather try the setup with ...e6, ...Rfd8 and ...Be8. Neverthless, his position is cramped and hard to play.} (13... Qb4 {can be parried by} 14. b3 { when} e5 $2 {intending to grab the b3-pawn, fails to} 15. Nf3 $1 {and Black is just lost strategically, because he cannot, after all, take the pawn:} Qxb3 $4 16. Nd2 Qb4 17. Rfb1 Qa5 18. Bb6 $18 {catching the queen.}) 14. Rab1 Nd7 15. b3 {Fortifying the typical Maroczy bind structure. White already enjoys a big advantage.} Qh5 16. f4 $6 ({The engine suggests to be more restrained with} 16. f3 $1 {and I can't argue. The main goal for White should be total restriction of Black's possibilities.}) 16... Nc5 17. Qc2 Ne6 {We reach a crossroads. I stood before an important decision. Should I take on c6, allow a trade on d4, or retreat the knight and avoid trades altogether?} 18. Qd2 $6 {I went for simplicity and it proved to be enough to win the game. Still, objectively it doesn't pose Black the most problems.} (18. Nde2 {allows Black to create counterplay with} f5 $1 {with a very complex game, in which White's advantage seems to be destined to fade away, e.g.} 19. b4 fxe4 20. Qa2 $5 Kh8 21. Nd5 Rf7 22. b5 Bxd5 23. cxd5 Nc5 24. Qc4 $11 {with full compensation for the pawn for White, but no more.}) ({The best choice was} 18. Nxc6 $1 bxc6 19. b4 $1 { White is positioned offensively on both flanks. Black should try to access the c5-square at the cost of giving White a protected passed pawn:} a5 $1 20. b5 Bd4 21. Bxd4 Nxd4 {22.Qd3 is the human move now. The engine points a more precise line:} 22. Qd2 $1 Qc5 23. Kh1 $1 $16 {The point is that the ...cxb5 idea no longer works now, as there is no ...Qxc4 tempo. ...Qxc4 is well met by Rfc1. Black continues to face problems.}) 18... Nxd4 19. Bxd4 e5 $2 {This move unnecessarily weakens Black's structure right at the moment when Black could equalize.} ({Black should initatiate the trade of queens:} 19... Bxd4+ 20. Qxd4 Qc5 $11 {I've been unable to find a trace of an advantage for White here. There remains only the practical edge of the position being easier to play for White.}) 20. fxe5 Bxe5 21. Bxe5 $2 {Correct idea, but wrong move order.} (21. Nd5 $1 Bxd5 22. exd5 $16 {was the right continuation and could easily transpose to the game without giving Black additional possibilities.}) 21... Qxe5 22. Nd5 Bxd5 $6 {Black returns the favour.} ({I underestimated the effectivness of} 22... f5 $1 {The problem is that White won't reach the desired structure with exd5, e.g.} 23. exf5 Bxd5 24. cxd5 Rxf5 $11) 23. exd5 { We now have a major piece endgame with certain winning chances for White thanks to his queenside majority and better king activity in a potential rook endgame. Precisely these assets allowed me to extract the full point.} Rce8 ({ This moment mirrors the situation in the opening in the sense that the road to full equality leads via breaking the bind:} 23... b5 $1 {, e.g.} 24. Rbe1 (24. cxb5 axb5 25. a5 Rc5 26. Rbd1 Qc3 $11 {and White is unlikely to win, as more trades should follow.}) 24... Qg3 25. Rf3 Qh4 26. cxb5 axb5 27. a5 Rc2 $1 $11 { The tactic solves Black's issues.}) 24. Rbe1 Qg3 25. Qf2 $1 {This resource leads to the rook endgame, which, although objectively drawn, is very unpleasant to defend for Black in practice.} Qxf2+ 26. Kxf2 a5 $1 {So far good defence, trying to fix the structure unfavourably for White.} 27. Re3 $1 { White's ideas include Rb1, Rfe1 or Ke2 and activating the king in case of an exchange. The engine screams "equal", but in practice things are not so simple for Black.} Rxe3 $6 {After this trade White's king activity sharply increases, which puts Black on a very shaky ground.} ({The engine points out a very effective defensive mechanism that is not easy to notice for a human:} 27... f5 $1 28. Rfe1 Rxe3 29. Rxe3 Kg7 $1 $11 {Wherever the white rook invades, Black is ready to block with his rook along the f-file. It seems artificial, but works perfectly. White simply has no way to make progress.}) 28. Kxe3 Re8+ 29. Kd3 {Knowing that I have substantial winning chances in any case, I faced a tough choice between the text move and 29.Kd4.} ({Extensive analysis suggests that in the case of} 29. Kd4 {Black is able to draw by a narrow margin:} Kf8 $1 (29... b6 $2 30. b4 $1 Kf8 31. bxa5 bxa5 32. c5 $1 $18 {should win.}) 30. Rb1 ( 30. c5 f5 $1 {One more of the hidden resources connected with ...f5.} 31. cxd6 Re4+ 32. Kc5 Ke8 $11 {The black king joins the defence and suddenly White's advantage evaporates.}) 30... Re2 31. b4 b6 32. bxa5 bxa5 33. Rb5 Rxg2 34. Rxa5 h5 $1 {Black needs to gradually create counterplay with his kingside pawns.} 35. Ra8+ Ke7 36. Ra7+ Ke8 37. a5 g5 $1 38. c5 $1 {This breakthrough may look decisive and certainly isn't easy to meet.} dxc5+ 39. Ke5 c4 $1 40. Kd6 f5 $1 41. a6 c3 42. Rb7 Ra2 43. Ke6 Rxa6+ 44. d6 {What is most amusing here is that White is able to collect all of Black's pawns, but the game should still end in a draw!} Kf8 45. Rf7+ Ke8 46. Rxf5 c2 47. Rc5 Kd8 48. Rxg5 Kc8 49. Rc5+ Kd8 50. Rxh5 Kc8 51. Rc5+ Kd8 52. Rxc2 Ra4 $1 $11 {A study-like finish. Surprisingly enough, the endgame with two pawns up for White is drawn!}) 29... Kg7 $6 {This makes things harder for Black, but objectively still keeps the game within the drawing margin.} (29... f5 $1 {should draw the game, thanks to some tough-to-spot lines:} 30. Rb1 (30. c5 Re5 $1 31. Kc4 Re4+ 32. Kb5 Rb4+ 33. Kxa5 dxc5 $11 {with a draw.}) 30... Kf8 $1 31. b4 axb4 32. Rxb4 Ra8 $1 { Black holds, as the pawn endgame after} 33. Rb6 Ra6 $11 {is drawn.} {The second point, again hard to spot from afar, is} 34. Rxb7 Rxa4 35. Rxh7 Ra3+ 36. Kd4 Ke8 $1 {and the ...Rg3 resource saves Black.}) (29... Kf8 $1 30. Rb1 f5 $1 {is an alternative move order.}) 30. c5 $6 (30. Rb1 $1 {was the critical move, when we reach a transposition to the 29.Kd4 line:} Kf6 31. Kd4 Re2 32. b4 b6 33. bxa5 bxa5 34. Rb6 Ke7 35. Ra6 Rxg2 36. Rxa5 h5 $1 37. Ra7+ Ke8 38. a5 g5 $1 $11 {As we know from the 29.Kd4 line, 39.c5 puts Black to test, but doesn't win here.}) 30... dxc5 31. Kc4 Re2 32. Kxc5 Kf8 $4 {This attempt to activate the king throws away the hard-fought draw.} ({After} 32... Rxg2 {White has no way to win, as Black can create counterplay with his f-pawn at the right moment, e.g.} 33. Kd6 Rd2 34. b4 axb4 35. Rb1 f5 $1 36. Rxb4 Kf6 37. Rxb7 f4 $11) 33. Rf6 $4 {A return of the big favour.} ({The simple} 33. Kb6 Ke7 34. Kxa5 $18 {wins in a prosaic fashion, as the king returns to b6, grabs b7, and the a-pawn runs.}) 33... Rxg2 34. Rb6 Rc2+ 35. Kd6 f5 $1 {I underestimated the counterplay created by the f-pawn.} 36. Ke5 Re2+ 37. Kf6 f4 38. Rxb7 f3 39. Rxh7 Kg8 40. Rg7+ Kh8 $4 {Just when Black is step away from a draw, on the 40th move, short on time, he commits the losing mistake.} (40... Kf8 {draws, as compared to the game, there are no mating nets and the Black king is able to join the game.} 41. Rc7 f2 42. Rf7+ Ke8 43. Kxg6 Re3 44. Rxf2 Rxh3 $11 { White is temporarily two pawns up, but Black's piece activity should guarantee an easy draw.}) 41. Rc7 {Suddenly Black is completely busted, as 41...f2 fails to 42.Kxg6} Re1 42. Rc2 $1 {...f2 is stopped and Black can give up his hopes of saving the game.} Re2 43. Rc3 f2 44. Kxg6 1-0
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