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Aron Nimzowitsch vs Savielly Tartakower
Karlsbad (1911), Karlsbad (Karlovy Vary) AUH, rd 11, Sep-04
Formation: King's Indian Attack (A07)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-24-11  CHESSTTCAMPS: White has a rook for a dark-squared bishop, but queen, knight and rook are all en prise, so it is impossible to retain the material advantage in the short-term. Nonetheless, that iron grip on the e-file is a huge asset, so that might be worth a sacrifice to maintain, instead of meekly playing for a draw with 24.Rxe7+ Rxe7 25.Rxe7+ Qxe7 26.Ne4 Bxe4 27.Qxe4. Therefore, only one candidate really interested me.

24.Mc4!! offers the queen, activates the knight (threatening Qd6), and maintains the grip on the position. Black's weakness on the back ranks is a big problem:

A) 24... Nxd5 25.Rxe8 Ne3 (temporarily separating the rooks and forcing exchanges) 26.fe Bxe3+ 27.Nxe3 de 28.R1xe3 and white has 2 rooks+P for a queen and the rooks control the position.

A.1) 25... Qb7/c6/d7/d6 28.Bxd5 Qxd5 29.R1e7+ Qf7 30.Rxf7+ Kaf7 31.Ra8 wins.

A.2) 25... Other N move 26.R1e7+ Qxe7 27.Rxe7+ Kf8 28.Rxa7 wins.

A.3) 26... Kf7 27.ed g5 28.Bd5+ Kg6 29.R1e7 wins the Q.

B) 24... Bxe6 25.Qxe6 (threatening Nd6) Kf8 26.Qxf6+ Kg8 27.Bd5+! forces mate.

C) 24... Be3 25.fe! Nxd5 26.Rxe8 de (or Nxe3) 27.Nxe3 Nxe3 (de) 28.R1xc3 is similar to the A main line.

I think this is it - time for review.

Jul-24-11  CHESSTTCAMPS: Walked right into the trap that Nimzovich walked into. Congrats to those who got it. Most likely, the worthy participants found the improvement in post-game analysis.
Jul-24-11  TheRavenPK: My ELO is 1000 and I found it in about 10 seconds up to 29.Rxa8 :). True, I didn't bother looking what happens if Black "declines", but however.
Jul-24-11  Creg: Sunday insane -- Sac this, or sac that. After looking at one crazy move after another, such as 24.Qxf5 or 24.Rxf6 --- I said I was just looking, I finally looked at 24.Qa8. Here's what I see...

24.Qa8 Rxa8 25.Rxe7+ Qxe7 26.Rxe7+ Kf8 27.Rxh7
-------
I don't believe it. I actually got it right. I think I get one Sunday puzzle a month.

Jul-24-11  David2009: Nimzowitsch vs Tartakower, 1911 White 24?

White is the exchange ahead but his Qd5 and Re6 and Nd2 are all attacked. If 24.Qc4 Bxe6 25.Qxe6 Bxd2 wins a piece. The sane continuation is 24.Rxe7+ Rxe7 25.Rxe7+ Qxe7 26.Ne4 but 26...Be6 27.Qa8 (if 27.Qc6 Bd7 gains a tempo) Bd7 threatening f5 pressurises White ( ). So what is the insane continuation? Try 24.Nc4 expecting 24...Nxd5 25.Rxe8 GOOT! If the N moves, 26.Re7+; otherwise 26.Bxd5 since the N cannot readily be defended. Time to check:
====
Well I lose in good company (Aron Nimzowitsch). Like the great man, I miss 25...Bd7!! UNGOOT!

A strong silent Aussie is in the process of wrapping up the Tour de France (http://www.cadelevans.com.au/cadels...). Meanwhile, over to Crafty End Game Trainer starting with the puzzle position:


click for larger view

and next the interactive link:
http://www.chessvideos.tv/endgame-t... Enjoy exploring the variations, including the Chessgames.com recommendation 24.Qa8!!.

Playing through the 'sane' 24.Rxe7 line perhaps 26.Nf1 (seen OTB) is better than 26.Ne4. I'll enjoy the other kibitzes and the game when the last stage of the TDF is over.

Jul-24-11  morfishine: Remembering <sevenseamen>'s wise counsel, Sunday Puzzles are different than the rest: a real element of "insanity" is present. With that said, we see White is up an exchange, but about to give it back. Furthermore both his Queen and Knight are attacked. Even worse, no move by the Queen both preserves her and protects the Knight. Sounds like just the right time for a little "insanity".

With only 30-minutes to work with, there's only time for 1-line, 1-shot, all-or-nothing: so lets explore <24.Qxf5> which does a lot: Black doesn't have time to interpolate 24...Bxd2 due to 25.Qxf6+ followed by 26.Rxd7, so he must take the Queen. Also, destroying blacks WSB removes future funny stuff involving Re1+,Bf1 & Bh3.

After 24...gxf5 25.Nf3 Kf7 (to play 26...Bf8) 26.Nh4 Bf8 27.Bf3 Qd7 (preparing to trade the queen for 2-rooks) 28.Bh5+ Ng6 29.Rxe8 Qxe8 30.Rxe8 Kxe8 31.Nxg6 hxg6 32.Bxg6+ Ke7 33.Bxf5 white is 2-pawns up with a winning position [despite the opposite colored bishops]:


click for larger view

It was at this point that I realized black could've played 24...Nxf5

Oops

Congratulations to all those who saw 24.Qa8

Jul-24-11
Premium Chessgames Member
  patzer2: Today's Sunday puzzle solution 24. Qa8!! combines a deflection (removing the guard) sham Queen sacrifice with a pair of double attack tactics and a key in-between move sequence (a.k.a. zwischenzug) for a winning tactical shot that White missed in the actual game..

My analysis with Fritz indicates strong play might continue 24. Qa8!! Rxa8 (24... Bxd2 25. Qxe8 Bxe6 26. Rxe6 or 24... Bxe6 25. Qxe8 Bxd2 26. Rxe6 simply transpose to the same won position) 25. Rxe7+ Qxe7 26. Rxe7+ Kf8 27. Rxh7 Re8 (diagram below)


click for larger view

28. Rh8+! This and White's next constitute a pair of key in-between moves to assure a decisive advantage (not 28. Rxh6? Kg2! 29. Rh4 Re2! when Black has counter play and practical drawing chances).

28...Kf7 (diagram below)


click for larger view

29. Bd5+! completes the key zwischenzug sequence (not 29. Rxh6? Kg7! 30. g4 (or 30. Rh4 ) when Black again has too much counter play).

29...Ke7 (diagram below)


click for larger view

30. Rxh6 now White captures the piece with decisive advantage -- since without the ability to invade via ...Re2, Black has no counter chances and is clearly lost.

Jul-24-11
Premium Chessgames Member
  playground player: Ai-yah! Black left the back door open (Qa8), and I never saw it!
Jul-24-11
Premium Chessgames Member
  Jimfromprovidence: One thing I misssed last night was the subtlety after 24 Qa8 Rxa8 25 Rxe7+ Qxe7 26 Rxe7+.


click for larger view

Black cannot play 26...Kg8 or 26...Kh8 to protect his h pawn, because he loses his a rook right away after 27 Bxa8.

Instead he hopes to exchange rooks after 26..Kf8.


click for larger view

But white can play 27 Rxh7, threatening both the rook and the h bishop. 27...Rc8 looks like the best move here for black, followed by white's 28 Bb7.


click for larger view

Jul-24-11  castledweller: Missed it completely today - looking at other combinations and lines . . .

When I think of some of the other Sunday puzzles, I usually associate "insane" with a very tricky series of moves that are difficult to get in the correct order, or even to conceptualize at all. So that being said - today's puzzle doesn't really strike me as "insane" - it seems to really just be a question of being methodical, and not overlooking a good move, because as soon as you see Qa8, you can see its a goodie.

just a thought . . . now, back to my tea and blueberry scone!

Jul-24-11  BOSTER: It's not so often you can see when white three pieces simul. under attack: Qd5, Re6 and Nd2. And how using only one move to save all of them.
The attractive 24.Rc6 is refuted by Nxd5.
So white can use that knight on e7 is pinned ,and that black king and the queen are on the same rank. So, 24.Qa8 (threat Qxe8) if Rxa8
25.Rxe7+ Qxe7 26.Rxe7+ Kf8
27.Rxh7 if Bxd2 28.Rxa8 if Re8 28.Rh8+ Ke7 29 Rxe7 and white is better.
Jul-24-11
Premium Chessgames Member
  patzer2: <Jimfromprovidence> In your final diagram after 24 Qa8 Rxa8 25 Rxe7+ Qxe7 26 Rxe7+ Kf8 27. Rxh7 Rc8, simply 28. Rxh6 is also winning.

However, I also like your clever idea of 28. Bb7! resuming the double.

Here's some analysis with Fritz of the two variations:

24. Qa8!! Rxa8 25. Rxe7+ Qxe7 26. Rxe7+ Kf8 27. Rxh7 27... Rc8


click for larger view

28. Bb7!

(28. Rxh6 Kg7 29. Rh4 g5 30. Rh5 Kg6 31. Bf3 g4 32. Rxf5 Kxf5 33. Be2 Rg8 34. f3 gxf3 35. Bxf3 Ke5 36. Kf2 f5 37. Nc4+ Ke6 38. Bg2 Re8 39. h3 Kf6 40. Na5 Re3 41. Nb7 Re5 42. a5 Ke7 43. Bc6 Kf6 44. a6 Re6 45. Bb5 Re5 46. Bc4 Ke7 47. Na5 Kd6 48. h4 Kc7 49. Kf3 Re1 50. Kf4 Rf1+ 51. Ke5 Rf2 52. Nb7 Kc6 53. Bb3 f4 54. gxf4 Rh2 55. f5 Rxh4 56. f6 Rh5+ 57. Ke6 Rh6 58. Ke7 Rh7+ 59. f7 Kb6 60. Ke8 Rh8+ 61. f8=Q Rxf8+ 62. Kxf8 )

28... Bg7 29. Bxc8 Bxc8 30. Ne4 Kg8 31. Rxg7+ Kxg7 32. Nxc5 Kf7 33. Nb3 Ke6 34. Nxd4+ Kd5 35. c3 Bg4 36. a5 Bc8 37. Kf1 a6 38. f4 Bh3+ 39. Kf2 Kc5 40. Ke3 .

P.S.: Apparently, with strong computer play the win is easy with the simple 28. Rxh6. However, against a human opponent your clever 28. Bb7! avoids the complexities of having to play two minor pieces against a Rook in the endgame, even though the ensuing Knight versus Bishop ending it forces isn't exactly a cake walk either.

Jul-24-11  sevenseaman: <BOSTER> If today's puzzle were to be rephrased, 'Three White pieces are en pris, can he find a move that will save all three?'

I think most posters would have hit the right button.

Jul-24-11  Patriot: Time limit: 10 minutes with chess clock
Material: White is up the exchange
Threats: ...Nxd5, ...Bxd2, ...Bxe6

So many threats! The best I could come up with was 24.Rxe7+ Rxe7 25.Rxe7+ Qxe7 26.Ne4. Houdini thinks this is second best at (+0.6). I completely missed 24.Qa8!--a very nice move.

An odd question would be, "How could I have seen 24.Qa8?" (Usually it is "How could I have missed it?") 24.Qa8 is a simple threat I failed to note in the 10 minutes. It may have helped to take note of any loose pieces for black. It would be even more thorough to note loose pieces on both sides. Certainly it should be easy to see this in 10 minutes I would think.

Jul-24-11  LIFE Master AJ: 24.Qa8, (undermining the Knight on e7) was like my ONLY candidate move ... but I was not even sure it was winning ...

[24.Qa8 Rxa8[] (<24...Kf7? 25.Rxf6+!; <24...Qd7? 25.Qxe8 Qxe8 26.Rxe7+ Qxe7 27.Rxe7+ Kf8 28.Re2 ) 25.Rxe7+ Qxe7 26.Rxe7+ Kf8 27.Rxh7 Rc8 (27...Bg7? 28.Bxa8 Kg8 29.Rxg7+ Kxg7 30.Nb3 ) 28.Rxh6 Kg7 29.Rh4 g5 30.Be4 gxh4 31.Bxf5 Rc7 32.gxh4 Re7 33.Kf1 Re5 34.Bg4 f5 35.Nc4 Rd5 36.Bf3 ]

Jul-24-11  abuzic: So 24.Qa8! is the answer. But it all started with black's 21st move: <21...f6?> (21...Bg7)

Then the question would be: <white to play 21.?> 21. Nd5!

-21...Nxd5 22.Rxe8+ Rxe8 23.Rxe8+ Kf7 (23...Kg7 24.Qxd5 Bxd2 25.Qg8+ Qg7[25...Kh5 26.Bf3+ forces mate] Qxc5) 24.Re2

-21...Qd6 22.Nxe7 Kf8 23. Nxf5 Rxe5 (23...Qd7 or...Qb8 24.Nxh6; 23...Qc7 24.Rxe8+ forces mate; 23...gxf5 24.Rxe8+ Rxe8 25.Rxe8 Kxe8 26.Qh5+) 24.Nxd6 Re1+ 25.Nf1 Rxe7 26.Qa8+

The game continued: -21...Rxd5 22.Qxd5+ Kf8? (22...Nxd5 or 22...Kg7 is actually better for black: 22...Nxd5 23.Rxe8+ Bf8 24.Bxd5+ Kg7; 22...Kg7 23.Qxc5 Qxc5 24.Rxc5 Bxd2 25.Re2) 23.Re6 Kg7? (23...Bxe6 24.Qxe6 Qb6 25.Qxb6 axb6) 24.Nc4? (24.Qa8!)

Jul-24-11
Premium Chessgames Member
  agb2002: White is an exchange ahead.

Black threatens 24... Nxd5, 24... Bxe6 and 24... Bxd2.

Black's threats, the defenseless rook on e8 and the position of the black king and queen suggest 24.Nc4:

A) 24... Nxd5 25.Rxe8

A.1) 25... Qb7(c6) 26.Bxd5 (threatens 27.Rg8# and 27.Bxb7(c6)) 26... Qxd5 27.R1e7+ Qf7 28.Rxf7+ Kxf7 29.Nd6+ Kg7 30.Nxf5+ gxf5 31.Re7+ Kg6 32.Rxa7 + - [R+P vs B].

A.2) 25... Nb6 26.R1e7+ Qxe7 27.Rxe7+ Kg8 28.Rxa7 + - [R+P vs B].

A.3) 25... Ne3 26.fxe3 and the rooks are about to control the e-file and invade the Black's first ranks. For example, 26... Bxe3 27.Nxe3 dxe3 28.R1xe3 Kh6 29.R3e7 with the better ending.

B) 24... Bxe6 25.Qxe6 with the menace 26.Nd6.

I don't have time for deeper analysis.

Jul-24-11
Premium Chessgames Member
  agb2002: I missed 25... Bd7, better luck next week.
Jul-24-11  WhiteRook48: I saw 24 Qa8 in about 15-20 seconds.
Variations are: 24...Bxe6 25 Qxe8 (there may be something better) 24...Bxd2 25 Qxe8 Bxe1 26 Rxe7+ getting the queen,
and
24...Qxa8 25 Rxe7+ winning the queen with extra material. I got a Sunday puzzle and the variations. That's a first.
Jul-24-11  psmith: Totally missed it, chose Nc4. At least that makes me equal with Nimzo (not).
Jul-24-11  stst: Insane-could be draw, or a "help-mate"
Try
24.RxN RxR
25.RxR+ QxR
26.Nf3 Be6
27.Qe4 g5
28.h4 Qf7
29.hxg5 fxg5
30.Ne5 Qf6
31.Ng4 BxN
32.QxB Kf7
33.Bd5+ Kf8
34.Qc8+ Kg7
35.Qg8#
Jul-24-11  sevenseaman: <David2009>Its tough dealing with Crafty's machinations, so I decided better to congratulate you on the persevering Cadel Evan's great win in the Tour. I have always admired this athlete.
Jul-24-11  standardwisdom: Before I saw the solution, I wrote: "Of course, the only sensible move is 24. Nc4, as the Queen is 'safe', and after the knight makes it to Nd6, the win is safe as well, (more analytic blah blah)." Oh well.

Turns out I am as smart as Nimzowitsch is - right at the point where he makes an unsound move.

Jul-25-11  TheBish: Interesting; I saw the winning idea right away! Pretty sure I never saw the game or position, either. Funny, but sometimes I get the Sunday problem more easily than Saturday or even Friday on occasion.
Jul-25-11  LIFE Master AJ: BTW, I did my analysis with Fritz ...
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