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Arkadij Naiditsch vs Liviu Dieter Nisipeanu
Olympiad (2008), Dresden GER, rd 7, Nov-20
Caro-Kann Defense: Advance Variation (B12)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
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Apr-28-11  DarthStapler: I got the same answer dzechiel did
Apr-28-11
Premium Chessgames Member
  patzer2: For today's Thursday puzzle solution, the pawn move 51...f5! prepares 52...f4+ with decisive tactical threats against the now helpless King.

The two main threats involve the deflection or removing the guard tactic to win a piece (e.g. 51...f5! 52. Bg5 f4+ 53. Bxf4 Rf3+ 54. Kh2 Rxf4 ) and a simple mate threat (e.g. 51...f5 52. Bg5 f4+ 53. Kh2? (or 53. Kh3 Rh1#) 53...Rh1#).

The skewer tactic also comes into play with the threat 51...f5! 52. Rxg7? Rg1+ 53. Kf4 Rxg7 .

If 52. Kh3, then simply 52...f4! once again threatens mate, and forces play back into the deflection line 53. Bxf4 Rf3+ 54. Kh2 Rxf4 .

P.S.: I too fell for the tempting 51...Rf3+, which looks like it might actually win after 51...Rf3 52. Kg2 g6! to . However, it's a much longer and tougher grind, and gives Black many chances to go wrong.

Apr-28-11
Premium Chessgames Member
  Domdaniel: <morfishine> - < I am a victim of chess-blindness. Can I sue somebody for being a victim?>

Probably. Some lawyers will take a chance with any suit, as long as you're paying. The "no foal, no fee" argument - or "no win, no charge" or "no mate, no cry" for that matter - is unlikely to get far.

But there are legal precedents. Johnny 'Sue' Cash and Shel 'Sue' Silverstein vs Pa Cash, Pop Silverstein, and the States of Arkansas, Texas, Illinois, California, plus the Medieval Kingdom of Scotland, and Tin Pan Alley, is a key case. The plaintiffs argued that their fathers, acting in concert - as it were - with various State authorities, named them 'Sue' in a manner calculated to cause personal distress, gender anxiety, and a propensity to dress in black, visit prisons, and 'Sue' people. Mr Cash further alleged that it created an irrational affinity with the Sioux Nation, but the judge had no reservations in throwing that out.

In 1969, Mr Cash further undercut his own case with a hit single - lyrics by Silverstein - which claimed that being 'A Boy Named Sue' had eventually led to personal growth and maturity. The judge suggested that he pay royalties to his father, and the case was dropped.

In your case, a feeling of victimhood is bad, but perhaps chess-blindness - or Amaurosis Scacchistica, to use Dr Tarrasch's technical name - might be good for you in other ways. Has your hearing improved? Your sense of smell? Your ability to detect more fish than average? Or to smell a Rat?

You can console yourself with the thought that chess blindness is rarely permanent, and a bout of it is often followed by a period of sharpened chess vision. So you'll get better, okay? That'll be $487.87 plus tax.

At least it's not Knight Blindness, where the sufferer can't see Knights.

Dr. Zug
Zwang Centre for Funny-sounding Diseases

Apr-28-11  Patriot: 51.f5! is a really nice move. Too bad I didn't see it. For such a quiet looking move, it certainly contains a powerful threat! I thought 51.Rf3+ was winning but failed to notice that after 51...Kh2 52.Kxh4 Be1+ the bishop is out of the potential fork on f2 so the rook is free to take on g7.

I'm seeing a recurring problem in my analysis--"generalizing". I'm not sure what else to call it. After thinking the g7-pawn was untouchable after 52.Kxh4 because of the fork on f2, I decided the line was winning instead of looking at further forcing moves (like 52...Be1+). Being aware of this kind of analysis mistake is the first step in avoiding it later.

Apr-28-11
Premium Chessgames Member
  Domdaniel: Ah, yes, the game. Without seeing anything much, I reckoned that 51...f5 looked good, anchoring the Bishop on its best square (covering b7, h7, f3 and h1, all of which feature in possible continuations).

The skewer protecting g7 is a bonus. I looked briefly at other moves including 51...Bc6 and 51...Rf3+ and even 51...Bf5. I couldn't see a good continuation after ...Rf3+.

But even 51...f5 seemed to create space for the enemy bishop, allowing a move like 52.Bg5 with a renewed threat on g7 (and an embarrassing mate if Black plays ...g6).

Then I saw that an immediate advance with 52...f4 set up a mating net which wins the Bishop.

I'd have played 51...f5 on general principles, even in time trouble. I *might* have seen the follow-up. I'd like to think so, anyway.

Apr-28-11  KingV93: I missed this one and I'm disappointed about it. I know I stink at endgames but I feel this is one that I should have seen. Black is in good position and securing the bishop in order to move in for the kill seemed too quiet for a tactical puzzle.

I went with ♖f3 thinking I could grab the h♙. Completely wrong. This is one that using a board would've helped me. In the future I'm gonna utilize that tool, my brain cannot hold all the calculations and variations in the deeper or more subtle puzzles and it's missing the refutation that gets me all the time.

Apr-28-11  newton296: nice puzzle. but couldn't find the mating net with f5 f4 Rh1+ forcing white to sac with Bxf4! so came up with meaningless moves like Rf3+ hoping to pick off the h4 pawn.

oh well, my quest for a perfect will will have to wait!

Apr-28-11  cyclon: It's a bit of a surprise how soon White gets into hopeless position after 51. -f5. There's no adequate way to meet 52. -f4/+. If White plays 52.K-, then -f4 and he must give off his Bishop to prevent mate 52. -Rh1X. Same applies to 52.Rd4 (or 52.Rd8/Re7/Bg5) -f4+ 53.Bxf4 Rf3+ 54.Kh2 Rxf4 55.Kg3 Rg4+ and 56. -Rxh4+ or -Kxh4 depending where White move his King. Then, (51. -f5) if 52.Rf7 (to prevent -f4) comes; -Rf3+ 53.Kg2 (Kh2 Rf2+) Rd3+ dis.ch. wins also the Bishop. After 52.b5 axb5 Whites situation has not improved, on the contrary. Lastly, 52.Rxg7? Rg1 wins the whole Rook. Therefore, 51. -f5 and cufflinks.
Apr-28-11  cyclon: By the way, I belong to those who don't check their variations with Chess-Engine before posting the comment. I rather be wrong than take credit TO MYSELF on behalf of Chess-Engine, but don't care about this too much - it's just my individual attitude which is part of the (more "authentic") learning process. It does not happen effectively enough if I let someone- or something else do the MAIN-thing FOR me (in other words; a "silent", "hidden" warrant/y BETWEEN failure and succes in the eyes of the others)! This is NOT said to judge what the others do. I do use board+pieces particularly on difficult levels, though. There was some interesting comments today, some advice concerning the dare to look foolish at times - risking to show ones vulnerability openly at times. That kind of attitude brings growth in the deeper sense- "not only technically"- and in my opinion is the approach worth respect. Maybe all this is "obvious", I don't know - hopefully this doesn't "sound" too hypocrite, at least it's NOT my intention. Previous sentence because some might treat this view as such (hypocrite).
Apr-28-11
Premium Chessgames Member
  kevin86: It looks like black will win the bishop.
Apr-28-11
Premium Chessgames Member
  Jimfromprovidence: Im happy to say that I got his one. I think its because that I saw that whites bishop is trapped and lost after 51f5.


click for larger view

If the bishop moves off of the c1-h6 diagonal, its mate in two for black. If it moves to e3 or f4 its lost after Rf3+. If it moves to g5, its lost after f4+.

What concerned me the most at this point was that white could create a passed pawn on the queenside; so if white does this does black still have time to play f4+?

So I analyzed the line beginning with 52 b5, where play continues 52axb5 53 c6 bxc6 54 a6.


click for larger view

This is the key moment for black and it looks good for him. He plays 54f4+. This forces 55 Bxf4 Rf3+ 56 Kh2 Rxf4.


click for larger view

Blacks in good shape. If white tries 57 a7, black can check on f2 and then cover the a pawn.. Or he can simply play 57c5.

Apr-28-11  YetAnotherAmateur: After seeing that Rf3+ went nowhere useful, f5 was actually the second move I looked at, for a few reasons:

1. Passed pawns want to advance.

2. Giving my bishop some pawn protection gives my rook more mobility.

3. As others have noted, this helps keep white's king nicely in his g1-h3 box, while black's king is still free to roam if he wants to (like Kate Pierson).

However, after satisfying myself that f4+ Bxf4 led to the capture of the bishop, and Rxg7 was disastrous, I can't say as I did the real analysis I should have before deciding on that move.

Apr-28-11  YouRang: Totally missed 51...f5!!

I focused on winning the h-pawn, and went with 51...Rf3+ 52.Kh2 (forced: 52.Kg2? Rd3+ ) 52...Rf2+ [diagram]


click for larger view

and then either:

53.Kg3 Rg2+ 54.Kh3 Rg4 55.Be1 Rxh4+! 56.Bxh4 Bf5+

or

53.Kg1 Rg2+ 54.Kf1 Kxh4

Note: 51...Rg1+ isn't as good since white hangs on with 52.Kf2 Rg1+ 53.Ke3 Rg4 54.Be1

Apr-28-11  lost in space: Missed it. Sigh.

Such a nice move! 51..f5!!

Apr-28-11  haydn20: <Domdaniel> What a repugnant display of nauseating puns. I loved em all!
Apr-28-11  Patriot: <cyclon> I think you have a good approach, which is an honest one. The key to improving at anything is honesty with oneself and that's what you seem to be striving for.

If a position is too difficult to visualize, it may help to play over the moves on a board but only as a last resort.

I don't think most players on here use chess engines to solve the puzzles, except after they've tried to solve it themselves.

Apr-28-11  cyclon: <Patriot:> Thank you for your comment. Quite balanced view. I also think - though I'm no-one to judge - that most kibitzers on this site seems to have at least decent level of chess understanding degrees varying, so they don't have to resort to engines. Besides, Chess-enthusiasts understands the meaning of self-study and surely appreciate the satisfaction derived from the more or less correct solution. Failures are the real stepping-stones when properly approached. After for about 20-years out of tournaments with almost complete inactivity in Chess my ability to visualize - also blindfolded - has severely dwindled, that's why I use board. To find a correct solution it needs an insight, an IDEA. Without an idea it's less likely that puzzle will be correctly solved whether thre's a board or not. I've failed many times even WITH the board. I've LACKED the IDEA. Problems arise at what point we define puzzle as "solved" and that definition varies within each puzzle unless we are satisfied with first, let's say 1-3 moves. For example in yesterdays puzzle I found - like most of us did - first 2-3 moves WITHOUT the BOARD, BUT FAILED to understand the IDEA and the "NATURE" of the combination in it's relative ENTIRETY, being unable to find a FORCED mating-idea in one of it's essential variations which White (Rubinetti) SURELY must have had in mind whilst playing as he did. So, the ideas don't come just by merely moving the pieces on the board. You don't paint a GOOD painting BECAUSE you have the tools. Besides, there is a time factor. Nevertheless, I'm quite sure here are kibitzers on this site who generally visualize the solution in their minds and I really respect that. It's very skillful. At my present condition difficult puzzles are just too heavy in general without a board because of several variations and often longer and more abstruse move-sequences EVEN when some idea has arisen. Ideas may come and go in the mind whilst walking outside and then I checked them on the board in difficult move sequences. If that's cheating, please,let me know. That's OK. Maybe it get's better during practice.
Apr-28-11  wals: Rybka 4 x 64

d 22 : 6 min :

1. (-5.63): 51...f5 52.b5 axb5[] 53.c6 bxc6[] 54.a6 f4+[] 55.Bxf4[] Rf3+[] 56.Kh2 Rxf4[] 57.a7 Rf2+[] 58.Kg3 Rf3+[] 59.Kg2 c5[] 60.Kg1 Kxh4[] 61.Re7 Kg3[] 62.Rxe4 Ra3[] 63.Kf1 Kf3[] 64.Re5 Ra1+[] 65.Re1 Rxa7[] 66.Rc1 c4[]

2. (-1.17): 51...Rf3+ 52.Kh2[] Rf2+ 53.Kg1 Rg2+ 54.Kf1[] Kxh4 55.Bc3 Kh5 56.Re7 Bc6 57.Ke1 Rc2 58.Re3 Kg6 59.Kd1 Ba4 60.Ke1 Kf5 61.Rf3+ Ke4 62.Rg3 Kd5 63.Bd2 g5 64.Rc3 Ra2 65.Rd3+ Kc4

I choose the inferior Rf3+.

The game was equal 46...Rf1, =-0.55.

51.Rd7, -5.63, was White's downfall.
Best,

1. (-1.25): 51.Rb3 Rg1+ 52.Kf2 Rg2+ 53.Ke1[] Kxh4 54.b5 axb5[] 55.Rxb5 Bf3 56.Rb2 Re2+ 57.Kf1 Re5 58.Be1+ Kg5 59.Bf2 Bd5 60.Rd2 Bc6 61.Bd4 Re4 62.Rg2+ Kf5 63.Rf2+ Ke6 64.Rd2 Rf4+ 65.Ke2 g5 66.Bc3

2. (-1.37): 51.Rc3 Rh1 52.b5 axb5[] 53.a6 bxa6 54.c6 Rxh4 55.c7 Bb7 56.c8Q Bxc8 57.Rxc8 Rd4 58.Be3 Ra4 59.Kf3 g5 60.Rd8 b4 61.Rf8 a5 62.Rxf6 b3 63.Rb6[] Ra3 64.Rb5[] Kg6 65.Rxg5+ Kf6 66.Ke4

Apr-28-11
Premium Chessgames Member
  doubledrooks: 51...f5! threatens to catch the white king in a mating net.

For example: 52. Rd4 f4+ 53. Kh3/h2 Rh1#

And the bishop falls after 52. Bf4 Rf3+ 53. Kh2 Rxf4

Apr-28-11  LIFE Master AJ: My main candidates were ...g5; ...f5; and ...Rf3+. (I went with ...g5; but I only spent about 2 minutes on the whole problem.)

Does this seem hard for a Thursday, or is it just me?

Apr-28-11
Premium Chessgames Member
  morfishine: <Domdaniel> I am indebted to you for your thorough explanation about what ails me. Can I write you a check?...or can I put it on May's tab?

Specifically, this sudden attack of "chess blindness" set upon me while I was perusing the winning move <51...f5>. At the point that I was going to overflow with joy and realization, the disease struck with frightening rapidity: For some still unexplained pathological reason, the pawn on <g7> was actually on <g6> and <51...f5> allowed the sudden <52.Rh7+> mate.

I dismissed <51...f5> only to discover that it won: the pawn on <g7> was there all along...why? one could ask...perhaps one should take a few seconds longer to be more thorough, just as you have been in your generous response. Best, Morf

Apr-28-11  Patriot: <cyclon> You're very welcome. I think you have to do what works for you because not everyone learns the same way. Generally, it is best to not move the pieces when analyzing because that is how visualization gets developed. Taking a walk, as you said, and trying to visualize the variations is really going to help.

With regard to your concept about ideas, they come in different shapes and sizes. Tactical patterns can be considered as ideas, and so is knowing how to play positions based on the pawn structure. Here's a position from one of my 2 minute games online (black to play):


click for larger view

Here I played 1...Qf5, seeking to trade pieces when ahead. My opponent played 2.Qc4?? to which I quickly replied 2...Qxf2+! and he resigned, seeing that 3.Rxf2 Re1+ 4.Rf1 Rxf1#. I noticed the mate pattern quickly but couldn't play it because of the position of his queen so I "offered" to exchange queens in a winning position. Then he moved his queen to just the right square so I could carry out my main idea. 1...Qf5 is not even the computer's best choice but is "good enough" as just about everything wins.

Apr-28-11  TheBish: Naiditsch vs Nisipeanu, 2008

Black to play (51...?) "Medium"

This took me a long time, but only because I was fixated on 51...Rf3+ 52. Kh2 Kxh4. Not sure why, but the best I could find was 51...Rf3+ 52. Kh2 f5, when the rook check is better left undone! So...

51...f5!

The threat is 52...f4+ 53. Bxf4 (or 53. K-any Rh1#) Rf3+, winning the bishop.

52. Rf7

Attempting to stop the pawn's advance. Intstead, 52. Kh3 (or 52. Kh2) f4 forces 53. Bxf4 Rxf4, as giving up the bishop is the only way for White to stop the mate.

52...Rf3+ 53. Kg2

Or 53. Kh2 Rf2+ wins.

53...Rd3+ 54. Kf2 Rxd2+

Black wins the bishop and the game.

Apr-29-11  CHESSTTCAMPS: In this opposite-colored bishop ending, material is even, but black has confined the white king to an area of four squares. I briefly looked at this yesterday and thought that preparing the king advance with 51... Rf3+ 52.Kh2 (Kg2?? Rd3+) Kxh4 was the way to go, but 52.Be1+ Kh5 53.Rxg7 is not good for black. So I set it aside and didn't get back to it.

Taking a fresh look at it this morning, I saw immediately that

51... f5!

is the way to go. The black rook is perfectly positioned to dominate the white bishop or mate the black king on the edge:

A) 52.Rxg7 (or Rc7/e7/f7) Rf3+ 53.Kh2 Rf2+ 54.Kg3 Rxd2 and the extra piece wins easily; white can't protect the pawns.

B) 52.Rd4(/d6/d8) f4+! 53.Bxf4 (Kh2 Rh1#) Rf3+ 54.Kh2 Rxf4 followed by 55... Rxh4 also with an easy ending.

C) 52.B moves put the bishop en prise or lose it after 52... Rf3+

D) 52.Kh2 f4 53.Bxf4 (otherwise 53... Rh1#) Rxf4 wins easily.

A nice domination study.

Apr-29-11  CHESSTTCAMPS: I overlooked 52.Rxg7 Rg1+ as the simplest way to go. Also, I should have analyzed 52.b5 as <Jimfromprovidence> did.
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