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Li Shilong vs Wang Yue
Chinese Championship (2006), Wuxi CHN, rd 9, Jul-04
Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation (B33)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Mar-21-13  mira94: It was pretty easy for today, the pin wins: 1.b3 axb3 2.Nd8 and Rxc6
Mar-21-13  lost in space: what a nice puzzle!

33...b3!! is closing the a4-c2 diagonal

After 33. axb3 Nd8 there is no defence for white, he will lose material as the defence Ba4 is not any longer defending c2.

Great!

Mar-21-13  Moonwalker: I looked at 33...b3 (for the wrong reasons) then looked at Nd8. Too bad I didn't consider the two moves in consort as I failed to see the simple defence 34.Ba4.

I hope that, at least, while 33...Nd8 doesn't win, it doesn't lose either!

Mar-21-13
Premium Chessgames Member
  FSR: Looks pretty simple unless I'm missing something. 33...b3! 34.axb3 Nd8 wins, since White can no longer play Ba4. If 35.Rc5, 35...Nxc6 defends both of the attacked pawns.
Mar-21-13  morfishine: Black would like to pin the White Bishop, but after 33...Nd8 White has 34.Ba4 and the rook is protected; Whats needed is to block the d1-a4 diagonal, interrupting the communication between a4 & c2

<33...b3> Black calls on his foot soldier (the b-pawn) to launch a frontal attack <34.axb3> White must surrender a piece no matter what; <34...Nd8> Winning a piece and holding onto his pawns after 35.Rc5 Nxc6

Mar-21-13  amaurobius: <lost in space: what a nice puzzle!>

I entirely agree. 33...b3 is not that hard to find but very attractive.

Mar-21-13  zb2cr: Found this one. My thoughts are pretty much along the lines given in detail by <notyetagm>, <Phony Benoni>, <Bartimeus>, <Patriot>, <Abdel Irada>, and others.
Mar-21-13  awfulhangover: Easiest thursday ever!
Mar-21-13  morfishine: <Moonwalker> On this comment <...I hope that, at least, while 33...Nd8 doesn't win, it doesn't lose either!> 33...Nd8 shouldn't lose, but White holds the draw with 34.Ba4
Mar-21-13  mistreaver: Thursday. Black to play. Medium. 33?
White has problems on the c-file. However there is the saving move Ba4 if black goes for Nd8 immediatelly. However
33... b3!!
Not that hard to spot. Idea is to block the a4-d1 diagonal. White can resign. A)
34 axb3 Nd8 wins a piece
B) 34 Rc4 bxa2 and black gets a new queen. Time to check. -----------
Yep, simple and straightforward. 4/4
Mar-21-13
Premium Chessgames Member
  NM JRousselle: Does anybody know if White was in time trouble? The minor piece ending certainly did not favor White, but after b3!, it's over.
Mar-21-13  Ezzy: 'Shilong's for Yue.'
Mar-21-13
Premium Chessgames Member
  Oxspawn: Like <Moonwalker>. I thought Nd8 was a killer and never even saw Ba4, let alone the rebuttal. Not much consolation, but I assume that if the rooks swapped off, black could play largely on the dark squares and leave the white bishop out of the game?
Mar-21-13  Herma48852: Okay, Black threatens 33...Nd8 attacking the pinned Bishop again. However, this can be defended with 34. Ba4. So the 33...b3! blocks the a4-d1 diagonal. Of course if White does not capture the P/b3, then Black will take on a2 and queen. So White must play 34. axb3 and 34...Nd8 and the Bishop is lost.
Mar-21-13
Premium Chessgames Member
  doubledrooks: I voted for 33...b3, after which the White bishop cannot be saved. For example, 34. axb3 Nd8 35. Rd2 Nxc6.
Mar-21-13
Premium Chessgames Member
  kevin86: Black throws in an intermezzo b3!!

After the white pawn takes,the bishop can no longer guard the rook by Ba4,so the clergy must be lost.

Mar-21-13
Premium Chessgames Member
  chrisowen: Ok be cuff in engine hold for the 33.b3 locks,

st hoof in cut off bishops right retreat so clean cleric left on his own again wobble b7 eli c8 really combine ate free 34.axb3 nd8 you embraced the notion of look in duty,

ramble might back in you gnaws 35.b4 bed it fellow in to bunk bastion d8,

you in lambasted again black to energize it her bind at ecumen c6 in jam up pet inker mitigate am in ignoble wind eat in collage art across in painting a picture cleric entwined knight a stab in the dark 34.axb3 too free pawn preventing b3a2 delivery for duty 34...nd8 badge of honour inceed the point in good game guard it double give for oomph 35.b4 in these ecclesiastical one toget 35...Rxc6 he rub,

im of the advantage off re you in c8 light is caught in a web for 33...b3 it racing you in rifles it spark in knight I fetching look in give over I f2 old dry up the well 34.axb3 nd8,

35.b4 Rxc6 off in fly by knight edificed ogle in b7 after you see abling 36.rd2 for instance,

Mar-21-13  master of defence: Poor Li Shilong. The correct move was 33.Ba4! 33.Kf2? loses to b3! 34.axb3 Nd8 and the c6-bishop can't be saved.
Mar-21-13  Alex56171: I didn't see 33.b4, but anyway it is an useless move.
Mar-21-13  Abdel Irada: <Ezzy: 'Shilong's for Yue.'>

Yue is pronounced ~"y-weh"; otherwise, not a bad pun.

Mar-21-13  TheTamale: <M.Hassan>, thanks for your comment. It clarified things for me immediately.
Mar-21-13  radtop: Why not 33.Ba4?
Mar-21-13  harish22: not sure why white was putting himself in pins. 33. Kf2 seems to have been a mistake. Ba4 was fine. Simply a blunder
Mar-22-13  John Abraham: Not a difficult puzzle but it is kind of counter-intuitive to conceptualize pawns as having obstructive powers. Pawns are probably the most dynamic and interesting pieces in chess; a slight alteration in pawn structure can drastically alter the result of a game
Jan-13-14  clement41: The final blow idea is very similar to that in Prohorovich-Pavinsky, 1958
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