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Lembit Oll vs Jeroen Bosch
VAM Hoogeveen op (1997), Wijk aan Zee NED, rd 8
Queen's Gambit Declined: Exchange. Positional Variation (D35)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-25-12  S A G A R: It's not insane!
Nov-25-12  rilkefan: Got up to ...Kd6, didn't see e4, might have played Nc4 instead.

<Jamboree>, 23...c5 24.Bb5 Bxb5 25.Qxb5 c4 26.Nd7+ Kc7 27.Nb6 Rcd8 28.Ra7 looks problematic. Or just 26.e4 as in the game, attacking c4 with the idea of Rc1 and Qa4.

Nov-25-12  bachbeet: I don't see any immediate mates after black moves to d8 on move 29. I do see that white can take the knight and threaten the rook so I guess that was enough to convince black to resign.
Nov-25-12  stacase:

23 Bxa6
24 Qxa6
25 Qa5+
Are all obvious moves I would have made over the board.

26 e4
Not so obvious.

Nov-25-12  UnsoundHero: What happens if Black plays 23...f6, delaying the capture of the B on a6, and threatening the N on e5?
Nov-25-12  Razgriz: this wasn't too bad. Couldn't see the final continuations though.
Nov-25-12  vinidivici: <unsoundhero>
<What happens if Black plays 23...f6, delaying the capture of the B on a6, and threatening the N on e5?> Nothing wrong what you have suggested. But with the threat of c5, white must immediately take the chance. Bxa6 resulting losses of materials nothing than a bishop to 2 pawns but leaving white king exposed. After calculating here and there, soon clearly the chance HAS TO BE TAKEN. Not losing any tempi for that and be aggressive.
Nov-25-12  vinidivici: I consider all the threats and got nothing else than Bxa6. The threat 23...c5 white has 25.Bb5.

23...bxa6(just like in the game) 24.Qxa6, the king is exposed. But it could be tricky form there. A bishop traded with 2 pawns, but i say that if white missed just one good move then white wouldnt spoil nothing from the sacrifice.

26.e4 is the move to watch. if 26...dxe4 27.Nc4+ Ke6 28.Qe5+ Kd7 29.Ra7+

If after 27.Nc4+ Kd7 then 28.Nb6+ will do just fine.

If after 26.e4, black rejects taking the pawn, then its no good also.

The exposed king sometimes more treacherous than the deficiency of materials.

e.g,26...Bd7 27.exd5 cxd5 28.Qb6+ Bc6 (c6 bishop becomes vulnerable).

It just one example i think all other moves are no good also.

Nov-25-12  Bengambit: 23. Bishop takes a6 should create problems for black.
Nov-25-12  morfishine: Material even, White to move. White is threatening to break up Black's pawns with <23.Bxa6>. Black is ready to play <f6> chasing the White Knight or <Ne6> planning <Nc7> - <Nb5>

I really only see 1 candidate: 23.Bxa6

<23.Bxa6> A natural sacrifice that also vacates d3: While a Knight on e5 is great, a Knight on c5 is deadly

<23...c5> After 23...bxa6 24.Nd3 c5 25.Qxa6 Qb7 26.Rb3 White wins;

or 23...bxa6 24.Nd3 Ne6 25.Qxa6 Qxa3 26.Qxa3 Rd8 27.Nc5 Nxc5 28.Qxc5 and Black is strategically lost

or 23...bxa6 24.Nd3 Qc7 25.Nc5

or 23...bxa6 24.Nd3 c5 25.Bb5 Bxb5 26.Qxb5 c4 27.Nc5

<24.Bb5> With an open a-file and a pawn to the good, White is winning

<24...Bxb5 25.Qxb5 Ne6> Fighting for c5

<26.Rc1> Fixing Black's c-pawn

<26...Qe8> If 26...cxd4 27.Rxc8+ Kxc8 28.Ra8+ followed by 29.Rxh8

<27.Qb6> Threatening 28.Qd6+

**********
At this point, I ran out of gas, so decided to check the solution. I'm surprised Black didn't try 23...c5


click for larger view

Nov-25-12  fokers13: 25.Rb3 followed by Rb7 and Rxf7 retains a winning advantage.

Not too terrible for a sunday,though it was easier than most.

Nov-25-12  vinidivici: Excuse me for correction in my post above...

<I consider all the threats and got nothing else than Bxa6. The threat 23...c5 white has 25.Bb5.>

White has <25.Bb5> should 24.Bb5

Nov-25-12
Premium Chessgames Member
  whiteshark: No secret opening surprise (S.O.S.) here.
Nov-25-12  James D Flynn: Material is equal but Whites Q, R, and B are lined up against the Black Ks pawn cover and his N controls the important escape square d7. My first thought is the obvious 23.Bxa6 f6(if bxa6(if c5 24.Bb5 Bxb5 25.Qxb5 c4 26.Nd7+ Kc7 27.Nb6 and the threat OF Nd5+ wins more material)) 24.Qxa6 Kc7 25.Qa5+ Kd6 (if Kb8 26.Rb3+ Qb7 27.Rxb7+ Kxb7 28.Rc1 Ra8 29.Qb4+ Kc7 30.Qe7+ Kc8 31.Nxc6 )26.Qc5+ Kc7 27.Qxe7+ Kb6 28.Qa7+ Kb5 29.Rb3#) 24.Bxb7 Qxb7 25.Rb3 fxe5 26.Rxb7+ Kxb7 30.Qb4+ Ka8(Kc7 or Ka7 allow Qe7+ and the N on g7 falls)31.Rc1 Rb8 32.Qe7 Rg8 33.Rc3 and the threat of Ra3# is decisive.
Nov-25-12  morfishine: BTW: RIP Lembit Oll
Nov-25-12  waustad: As usual for a Sunday, I saw the start but didn't make it to the depth that I could say I got it.
Nov-25-12
Premium Chessgames Member
  chrisowen: Longer ago dynamo for one dig in almost at I'd 23.Bxa6 bxa6 if

instead c5 time for no vacancy in energy you little ripper it is

worth in while go build dam in also 24.bb5 and thane in d7 should be

enough to win him c5 c4 doesnt stop white catching king baba-the

elephant can defend a d8 although rook dutifuls in b3 and b5 thin

picking ha backer mitigate in green gauge la bonk in good game a

culpa c4 length in dilemma again a real trickser 6a keys 24.Qxa6 Kc7

in jocular it down in digested white has right in chasing him all

the way it be in betel 25.qa5+ nut a kava king in diagram it learn

in level peppering from all sides kingd6,


click for larger view

Bine the wood e4! This opens up all avenues and black is in clay it

shoot all for pieces cone king off hastle in e6 then clink to

earthen 27.exd5 Nxd4 28.nc4+ board is swept clean together d4

immaterail one could effect rooks cage bearing signs of the times

strong in either d8 b4 you shine in c4 re3 dibble in pour upon

yonder hill in sight rooks ar ignoble in fashioning light victory a

pc6xd5 sealed king in balustrade the fast tend to his needs a much

in ado it drill in 27.e6xd4 28.nc4+ changing eventual come back in

7d, queena7 will pick up the knight in low again jovial a mood

gunning for rookh8 at enact in almost done afraid in body it

20...bd7 wasnt up to scratch in he ra3, tick in queen administer a6

a7 death king blow a d8 in betcha have nd4...

Nov-25-12  Patriot: I considered the game moves, but 26.e4 wasn't even on my radar.
Nov-25-12
Premium Chessgames Member
  agb2002: The material is identical.

Black is about to play 23... c5 and 24... c4, closing momentarily the a6-f1 diagonal.

The obvious move is 23.Bxa6:

A) 23... bxa6 24.Qxa6 Kc7 (24... Qb7 25.Rb3 + -) 25.Rc1

A.1) 25... Qd6 26.Qa5+ and mate in two.

A.2) 25... Kd6 26.Qxc8 + -.

A.3) 25... Kd8 26.Rxc6 Bxc6 27.Nxc6+ Rxc6 28.Qxc6 and the threat 29.Ra8+ looks decisive.

B) 23... c5 24.Bb5 Bxb5 25.Qxb5 and White has won a pawn and keeps attack chances.

Nov-25-12
Premium Chessgames Member
  Jimfromprovidence: I stared at the board for quite a long time trying to figure out the purpose of 26 e4.


click for larger view

It looks like white wants to play Qc5+, but if 26 Qc5+ comes first, then 26...Ke6 and white's chance has come and gone.


click for larger view

26 e4 prevents 26...Ke6, because of 27 exd5+ cxd5 28 Qa6+ Qd6 29 Qxc8+.


click for larger view

If 26 e4 Kf6, then 27 g5+.

These are just two examples using 26..Ke6, but there seems to be numerous variations to consider after 26 e4.

Nov-25-12  gars: <LTJ>, I wait eagerly for your analysis!
Nov-26-12  Abdel Irada: Under the title "The Case of the Magnetic Pawn," I have written out a partial solution. However, upon examination of the game, I find that my solution is not correct.

My key move (23. Bxa6!) is accurate enough, but after 23. ...bxa6 (Black having no other means of refuting the sacrifice that I could find), 24. Qxa6, Kc7, I continued with 25. Rb3 (intending Rb7) rather than 25. Qa5†.

Sundays being busy days for me, I never conclusively examined all of Black's possible responses to this, and he may escape with 25. ...Qe6 or even 25. ...Qh4, although I did dispose of such tries as 25. ...Kd8, 25. ...Bd7?, 25. ...Rb8? and 25. ...Qd8.

If asked to do so, I will complete and publish my analysis anyway, but for the moment, I will assume I have merely found the wrong follow-up.

Nov-26-12  sushijunkie: I got Sunday! I got Sunday! For the first time in a while. You can suck it, "me" of last week! "Me" of this week will give you pawn & move odds!
Nov-26-12
Premium Chessgames Member
  perfidious: < sushijunkie: ....You can suck it, "me" of last week!....>

Or not.

Nov-26-12  sushijunkie: What, <perfidious>? You don't like me talking trash to myself? Believe me, the other guy can handle it. ;)
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