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Liviu Dieter Nisipeanu vs Rustam Kasimdzhanov
World Cup (2011), Khanty-Mansiysk RUS, rd 1, Aug-28
Gruenfeld Defense: General (D80)  ·  0-1



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Kibitzer's Corner
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Aug-30-11  KingV93: I felt this one was pretty easy, and it IS Tuesday after all. Thinking that the capture exchanges down to a rook ending and after ♙f6 the White ♔ is blocked off and Black can advance the pawns.

Happy to have gotten an endgame puzzle, in short order no less!

Aug-30-11  mohannagappan: 46. ...Rxd5 47.exd5 f4+ white loses a rook and obviously black"s advantage
Aug-30-11  Patriot: I had no problem with this one (all was quiet outside my office). 46...Rcxd5 (not 46...Rdxd5 47.exd5 f4+ 48.Kxf4) 47.exd5 f4+ 48.Kf2 fxe3+ 49.Kxe3 Rxd5 .
Aug-30-11  Patriot: <Once> I'm not seeing the winning sequence after 46.Na6 Ra5 47.Nb8 although 46.Na2 does look safer.

I agree that 46.Nd5 would be an easy mistake to make, especially in time trouble. It looks like a natural move.

Aug-30-11  TomOhio: I did it the other way around... pushing the pawn to check and winning the Knight as a result. The difference is I was left with a 2-1 Rook advantage rather then 1-0. Would rather have 1-0.
Aug-30-11  Patriot: <TomOhio> You missed an option: 46...f4+ 47.Nxf4
Aug-30-11  ProjectR: RcxN white recaptures,then f4+ picks up whites remaining rook and e pawn,so i presume this is a resignation from white.
Aug-30-11  TheFocus: Nice puzzle. Less than five seconds to solve it.
Aug-30-11  sevenseaman: <TomOhio><I did it the other way around... pushing the pawn to check and winning the Knight as a result. The difference is I was left with a 2-1 Rook advantage rather then 1-0. Would rather have 1-0.>

Difficult to unravel as you have not detailed your moves. What was the White's N at d5 doing when you checked his K with 46...f4+? Perhaps you overlooked that N's reach.

Aug-30-11  David2009: Here's Nisipeanu vs Kasimdzhanov, 2011 with White to play at move 46::

click for larger view

<Once: ... after 45.... Rd4, it's hard to find a safe place to park the white knight. <snip> The best that Fritz can find is the weird looking 46. Na2> Fritz has read Crafty End Game Trainer's mind in the colours-reversed ending:

click for larger view

Enjoy finding the win using the interactive link

If you get stuck (I did!) try defending the position instead starting from the first diagram with link

Aug-30-11  iroozdar: 8. Nf3 This is an error
8. Qb1 was necessary
A strong move, bringing maximum pressure to bear on Black’s position
Premium Chessgames Member
  Sastre: There is nothing wrong with 8.Nf3. It's standard theory.
Premium Chessgames Member
  kevin86: I had the right idea,but I moved out of order:46...f4+? 47 ♘xf4

0 for two-lousy week...

Aug-30-11  jackpawn: Yesterday I found the solution immediately, today I had to search for a few seconds. Saw the possible fork immediately, saw taking the knight, but for a few seconds I didn't see that after taking the knight that the rook would cover f4, allowing the fork.
Aug-30-11  newton296: 5 seconds
Aug-30-11  sevenseaman: Here I've chosen an interesting puzzle with Monday/Tuesday-like difficulty. There are plenty of playable moves/responses at each step but very few of them make any relevant difference. The composer excels in simplicity of the idea. To frustrate the solver never seems to be one of his aims. Try if it pleases you.

By mustafamohammed.

click for larger view

w mates in 3.

Aug-30-11  Patriot: <sevenseaman> It looks like 1.Qh6 Ne6 (1...Qxf6?? 2.Qf8#) 2.e8=Q+/R+ Nf8 3.Qxf8#
Aug-30-11  sevenseaman: <Patriot> Good. 3. Qxf8# or 3. Qg7#, but makes no difference.

A married Japanese lady was visiting her friend in India. As the two entered the neat and well kept kitchen, the Japanese girl noted with keen interest the World map hanging on the kitchen wall. Very nice. I have a similar map in my kitchen back home. But er... something is wrong. We have 'Tokyo' here, she said putting her finger on big lettered 'Delhi' in the center of the map.

Premium Chessgames Member
  chrisowen: Castle dinks each ole! Knight exchange in d5 it rich picking

gruenfeld free rooks in chaingang disconnect f5 e4 swallow tale

stammer a nasty asian suprise cxd5 reck fun got him.

Aug-30-11  LIFE Master AJ: I (finally) went with 46...R/c5xN; and 47...f4+. (Wins a whole Rook.)

Its a nice tactic.

However, when I first looked at the problem, I was looking at Rook Checks, thinking there was a mate ... but mostly because today was Tuesday.

Aug-30-11  chessicle: <TomOhio> Also, pushing the pawn first fails to 47 Nxf4. Still prefer Black, right enough, but certainly not the obvious win of 46 ... Rcxd5!
Premium Chessgames Member
  Once: <patriot> This is how Fritz does it: 46. Na6 Ra5 47. Nb8 Rb5 48. Nc6 Rc4 49. Nd8 Ke7 50. Rd3 fxe4 51. fxe4 f6 52. Kf4 Rb8 53. Rd4 Rc7 54. Rd1 Rxd8

Amazing how powerful the two rooks are on an open board. It's odd that in the middle game we are taught to double rooks on the same file. But in the endgame and when fighting against pieces that aren't rooks, they are often more effective on separate files because they cover more territory.

Aug-30-11  Nullifidian: 46... ♖cxd5 47. ♙exd5 ♙f4+ 48. ♔f2 ♙fxe3+ leaves Black a rook up.
Aug-30-11  Patriot: <Once> Thanks for the info. I ran into something similar after playing against the Crafty link. It wasn't easy to calculate exactly how the knight gets netted.

Activity is a big key and when there are a lot of open files the rooks are very strong as you said. And if there is one open file the rooks are very strong if they control it and there are points of entry. I learned from experience when this is the case you generally don't want to allow another file to become open.

Aug-30-11  Fezzik: It's great to see such a fresh game as a puzzle! Is this some sort of record, a game played two days ago becomes a puzzle on
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