chessgames.com
Members · Prefs · Laboratory · Collections · Openings · Endgames · Sacrifices · History · Search Kibitzing · Kibitzer's Café · Chessforums · Tournament Index · Players · Kibitzing

(If you register a free account you won't see all these ads!)
Bent Larsen vs Berge Ostenstad
Gausdal zt (1985), Gausdal NOR, Jan-??
English Opening: Symmetrical Variation. Full Symmetry Line (A38)  ·  1-0
ANALYSIS [x]

FEN COPIED

NOTE: You are using our new chess viewer, "Olga." For more info see the Olga Quickstart Guide. You can switch back to the old viewer (pgn4web) from the pulldown menu below. If you have questions or suggestions see our Olga chessforum.

explore this opening
find similar games 1 more Larsen/B Ostenstad game
sac: 43.Rc4 PGN: download | view | print Help: general | java-troubleshooting

TIP: You can display posts in reverse order, by registering a free account then visiting your preferences page and checking the option "Display newest kibitzes on top."

PGN Viewer:  What is this?
For help with this chess viewer, please see the Olga Chess Viewer Quickstart Guide.
PREMIUM MEMBERS CAN REQUEST COMPUTER ANALYSIS [more info]

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Sep-14-10  Slotermeyer: 41. c5 1-0
Sep-14-10
Premium Chessgames Member
  al wazir: I don't know about how "easy" this is. 41. Rdb2 wins a ♙, with prospects of infiltrating one or two ♖s into black's sanctum. However, I figured 41. c5 must be the solution, since it also wins a ♙ and attacks the ♔. But if I had had the black pieces I would have played on a few more moves.
Sep-14-10  CHESSTTCAMPS: In this ending, material is even and the level of piece activity is similar, but black's bishop is loose. White can exploit this with 41.c5, giving black the unpleasant choice of giving up the bishop or a key pawn. I would expect the game to continue 41... Bf5 (to block the long diagonal with e4) 42.cb e4 43.a4 and the connected passed pawns will win handily.
Sep-14-10  LIFE Master AJ: 41.c5! Lateral discovered attack on the Black Bishop on g4, White will gain a powerful passed d-Pawn as a result.
Sep-14-10  zb2cr: 41. c5 attacks the Black Bishop and a Pawn. After Black saves the Bishop, 42. cxd6+ will win an important Pawn.
Sep-14-10  fritochip: I agree with Al Wazir. I'm not sure how "Easy" this was. My line was 1. Ra4, b5, 2. Ra7+ and the king is going to have difficulty protecting the D-pawn.

What I missed was the hanging bishop on g4 which the pawn move forces a move to protect the bishop (h5 or Bf3). So the pawn can take the D-Pawn with impunity, which is what I was trying to do all along. This must be why I am not GM Fritochip. Hats off to Larsen.

Sep-14-10  wladimirsky: I saw 41.c5 of course but after 41...Bf3 I thought 42.cb was simpler, getting two connected passers.

I guess both 42.cd and 42.cb are good enough. Any documented opinion as to which is better? 42.cd must be, since Larsen played it...

Sep-14-10  CHESSTTCAMPS: <...which is better? 42.cd must be, since Larsen played it...> Perhaps not better objectively, but it seems representative of his style.
Sep-14-10  LIFE Master AJ: 42.cxb6 also occurred to me - White gets two connected, passed Pawns. (However, taking the d-Pawn seemed more forceful.)
Sep-14-10  VincentL: "Easy".

I have got my Friday spectacles on for this puzzle.

I don't see anything immediately decisive. 41. Rb2 wins a pawn, but I doubt this is the solution.

41. Ra4 followed by 42. Ra7+ will also win a pawn.

Of the two I prefer Ra4 - the rook will infiltrate into black´s defences.

I think I am missing something. I am going to check.

Sep-14-10  EXIDE: Got the pawn c5 move. Not sure if there are complications beyond having a nicely placed pawn which should lead to a win eventually. Why did black resign ? a few more moves would have made the position clearer. I do not see a forced win, but maybe there is one out there. I will continue to follow the posts.
Sep-14-10  VincentL: In the game line, can black play 43.... Rbc8 ?
Sep-14-10
Premium Chessgames Member
  dzechiel: White to move (41?). Material even. "Easy."

Another position from a Larsen game. It's hard to miss the fact that almost all of white's men are on dark squares, leaving black's bishop with few targets.

The prosaic

41 c5

threatens both the bishop on g4 with one of white's rooks and the win of the pawn on d6 with check. I'm not sure what black would play here, perhaps

41...h5 or
41...Bd7

but white will follow up with

42 cxd6+

Is there more to be gained in this position? I'm not seeing it.

Time to check.

Sep-14-10
Premium Chessgames Member
  patzer2: As <LifeMasterAJ> observes, 41. c5! uses the discovered attack tactical theme to win a decisive pawn and solve today's Tuesday puzzle.

White's passed pawn might be a bit more powerful after 43. Bh3+! , but there's nothing wrong with the game continuation 43. Rc4 which quickly forces Black's resignation.

Sep-14-10  M.Hassan: "Easy"- White to move 41.?
Materials equal
It is easy to see that 41.c5 exposes the Black Bishop on g4 to Rook attack and no doubt, this must have been the first move. so 41.c5 Be7
42.cxb or cxd+
I followed cxb line thinking that there is possibility of a & b pawns getting connected. 42.cxb fRc8
43.a4 Bc6
44.b7 Rc7
45.Rc2 bRxb7
46.Rxb7 Rxb7
47.Rxc6
And White falls a Bishop ahead
Sep-14-10  SamAtoms1980: 41.c5! attacks the bishop and two pawns all at once.

"The Vikings are coming! The Vikings are coming! Fall back! They're everywhere!"

Sep-14-10  tanzerguy: I looked at 41...Be6, but cxb6 turns the two passed pawns into a steamroller.
Sep-14-10  melianis: Saw the bishops must come off but didn't get all four moves but just the first two.
Sep-14-10
Premium Chessgames Member
  Once: Watch out! There are predators about...

At first glance, it looks really sexy being a powerful lion with an immense golden mane. You are the head predator, the A number one, the top dog ... er cat. You can laze around the savannah all day in your harem of females. Nothing to do except talk football with your mates, the odd bit of mutual grooming, watch the local talent walk by and, every now and again, assert your alpha male status by getting jiggy with all the laydeez. And in the distance, watch a landrover full of tourists taking pictures, or as we carnivores like to call them, meals on wheels. Sweee-eet.

But life is not so easy for predators. You see, every prey-animal has evolved some mechanism for staying off the menu. Those cute little meerkats, just a tasty mouthful, a snack, an amuse-bouche, well, they have this trick of standing on their hind legs to look out for danger. And when you get close, wham, the little varmints disappear down their tunnels faster than you can say "roooargh". Which is annoying, to say the least.

Moving up to the main course, we have antelope and zebra. Both go very well pan fried with a reduction of red wine, duchesse potatoes, julienne of carrots, some honey-glazed roasted parsnips and a thyme and pomegranate jus. Except that these critters can run faster than Usain Bolt and all you are likely to get if you go after one, is to feel the burn, get a good sweat on and nothing for supper except grass (again) and picking at the bones of last week's leftovers.

Then there's the big meaty flavours. We are talking gutsy water buffalo steaks, cooked rare and bloody. But then again, these guys are tough. I don't care if you are the biggest lion on the plains, a full-grown water buffalo will stand toe to toe with you and batter you to whatnot with his horns. And believe me, those horns are as sharp as a mother-in-law lioness's tongue.

So what is a lion to do, if he is going to get his recommended five portions of flesh and sinew a day? The answer, my friend, is not so glamorous as it might sound ...

Predators pray on weaklings.

There, I've said it. You see, lions don't want to fight other lions. They don't want to go tunnelling after meerkats. They aren't fast enough to chase down an adult antelope or strong enough to get ready to rumble with a water buffalo.

Instead they prey on the young, the elderly, the injured, the vulnerable. Why take on an adult water buffalo when you can pick off a calf?

Today's puzzle really starts from here, after black has played 37...Kf6:


click for larger view

What white needs is some targets, the weaker members of the herd. The unprotected black bishop on g4 will do, but for now we can't get to it. And as <dzechiel> has pointed out, black has put nearly all of his pieces on black squares, so that our Bg2 tiger can't find anything to attack.

That is why Larsen's instinct is to create some targets:

38. b4! axb4 39. Rb1


click for larger view

Now we have four juicy targets to pounce on - the two b pawns, the d6 pawn and the Bg4. Okay, so we've made our a2 and c4 pawns a little more vulnerable, but then a predator shouldn't be afraid of the odd scratch.

39...Ke7 40. Rxb4 Rb8 and we have arrived at our puzzle position. The discovered attack with 41. c5 threatens the Bg4 and both of black's queenside pawns.

And our hero, the mighty lion, swaggers back to the pride with a juicy hunk of meat in his mouth.

"Let's not have leftovers tonight, honey" he says. "I've brought us back some steak."

Sep-14-10  igiene: Loose pieces drop off, namely Bishop in g4
Sep-14-10  FISCHERboy: 41 c5! Discovered attack! This threatens the g4 bishop, leading to a nice position for a passed D pawn. No forced win, though.
Sep-14-10  Bonifratz: I found the solution, but I wasn't sure about move 42. Wouldn't it make sense to play cxb6 instead of cxd6+? This would give White connected passed pawns (after a4 and a5). Could anyone explain?
Sep-14-10
Premium Chessgames Member
  whiteshark: Where's my Tuesday morning coffee? And the sun?
Sep-14-10
Premium Chessgames Member
  gofer: 41 c5 ...

41 ... Be6 42 cxb6 winning because the a and b pawns are impossible to stop in the long term...

41 ... bxc5 42 Rxg4 winning because the pawns in the centre cannot advance as white controls c4, d5 and e4!

Time to check! Much easier than yesterday!

Sep-14-10
Premium Chessgames Member
  OhioChessFan: <VincentL: In the game line, can black play 43.... Rbc8 ? >

This is an interesting try. I only have a few minutes but right now I have 43..Rbc8 44. Rxc8 Kxc8 45. Rf2 e4 46. Bh3+ Kb7 47. Rc2 and I think the Pawn decides.


click for larger view

search thread:   
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
NOTE: You need to pick a username and password to post a reply. Getting your account takes less than a minute, totally anonymous, and 100% free--plus, it entitles you to features otherwise unavailable. Pick your username now and join the chessgames community!
If you already have an account, you should login now.
Please observe our posting guidelines:
  1. No obscene, racist, sexist, or profane language.
  2. No spamming, advertising, or duplicating posts.
  3. No personal attacks against other members.
  4. Nothing in violation of United States law.
  5. No posting personal information of members.
Blow the Whistle See something that violates our rules? Blow the whistle and inform an administrator.


NOTE: Keep all discussion on the topic of this page. This forum is for this specific game and nothing else. If you want to discuss chess in general, or this site, you might try the Kibitzer's Café.
Messages posted by Chessgames members do not necessarily represent the views of Chessgames.com, its employees, or sponsors.
Spot an error? Please submit a correction slip and help us eliminate database mistakes!
<This page contains Editor Notes. Click here to read them.>
This game is type: CLASSICAL (Disagree? Please submit a correction slip.)

Featured in the Following Game Collections [what is this?]
41.? (September 14, 2010)
from Tuesday Puzzles, 2004-2010 by Phony Benoni
RonakSeanav's favorite games
by RonakSeanav
41. c5! wins a decisive pawn & solves a Tuesday puzzle
from Discovered Attack by patzer2
41.? (Tuesday, September 14)
from Puzzle of the Day 2010 by Phony Benoni


home | about | login | logout | F.A.Q. | your profile | preferences | Premium Membership | Kibitzer's Café | Biographer's Bistro | new kibitzing | chessforums | Tournament Index | Player Directory | Notable Games | World Chess Championships | Opening Explorer | Guess the Move | Game Collections | ChessBookie Game | Chessgames Challenge | Store | privacy notice | contact us
Copyright 2001-2017, Chessgames Services LLC