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Leinier Dominguez Perez vs Judit Polgar
World Cup (2011), Khanty-Mansiysk RUS, rd 4, Sep-06
Sicilian Defense: Old Sicilian. Open (B32)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 16 OF 16 ·  Later Kibitzing>
Sep-07-11  coolchess1: This game showed it is always important to have the basic chess endings against a minor piece v/s two to have memorized accurately. Judit was in danger of drawing this game during the final stages and luckily her opponent made few mistakes and brought her again into the game.

All in all a good fight back from Judit , specially to bring the game to a stage where you had a R+B v R ending. Hope she advances further in this cup. Well done by Judit.

Sep-07-11  PinnedPiece: Where is <Gregor Samsa Mendel> to point out that 112...? should be a Wed-Thurs puzzle?

(I sure hope it would not considered a Tues!!>

.

Sep-07-11  kia0708: such end games are beyond my understanding :-)
Sep-07-11  wilfrid811: Shouldn't white try, at least, Rg2?
Sep-07-11  Bryan14: Plz can someone explain to me why not 111.Ka4 ?
Sep-07-11  Kinghunt: Here's a puzzle for everyone. 107.?
White to play and draw.

Hint: it's not that Dominguez did anything wrong with his move, it's just that he failed to do something.

Sep-07-11  twinlark: <Bryan14: Plz can someone explain to me why not 111.Ka4 ?>

Both 111. Ka4 and the move played result in mate in six.

Sep-07-11
Premium Chessgames Member
  Jimfromprovidence: The position after 78...Rb2 is intriguing and would make for an excellent puzzle.


click for larger view

White has two drawing moves. One is is a bit more obvious than the other, 79 Rb4, but what is the other one and why does it work?

Sep-07-11  coolchess1: @kinghunt: Leinier Dominguez-Perez failed to claim draw by three fold repetition rule. It would have been a draw had he claimed at this move.
Sep-07-11  kia0708: I hope <kingcrusher> will make a video and do some analysis of this game.
Sep-07-11
Premium Chessgames Member
  kamalakanta: coolchess1, are you sure? Is it possible the position repeated 3 times, but not 3 times with the same person to make a move?
Sep-07-11
Premium Chessgames Member
  HeMateMe: Does the move matter, as long as the same position is reached, 3 times?
Sep-07-11  wilfrid811: I think 113.Rg2 should draw.
Sep-08-11  Blunderdome: if 113. Rg2 then ...Re6
Sep-08-11
Premium Chessgames Member
  tamar: 113 Rg2 is a good try, but 113...Re6 takes away the stalemate idea because the bishop would capture on 114 Re2
Sep-08-11  sevenseaman: <jimforprovidence> <but what is the other one and why does it work?>

The other move is 79. Rc4. Threatened with Rxc3 next Black has to accept the R sac. With the Rs going off, both parties get stripped down to inadequate 'mating' material as Black can always sac his B to take the P.

Sep-08-11
Premium Chessgames Member
  whiteshark: She's got a nerve!
Sep-08-11
Premium Chessgames Member
  whiteshark: <17.Nd5!> would have changed chess history, m.o.l. <17...exd5 18.exd5>


click for larger view

...

Sep-08-11  kellmano: The move does matter in three-fold repitition.

<sevenseaman> I don't see how 79. Rc4 helps.

Sep-08-11  sevenseaman: <Kellmano> I do not see it either now. Ill considered, I'll say.
Sep-08-11  kia0708: 16 pages of comments,

what a game !

Sep-08-11
Premium Chessgames Member
  Jimfromprovidence: <sevenseamen> <The other move is 79. Rc4. Threatened with Rxc3 next Black has to accept the R sac. With the Rs going off, both parties get stripped down to inadequate 'mating' material as Black can always sac his B to take the P.>

No, you misread the position as 79 Rc4 allows for a simple rook vs. king ending.

The other savng move for white is 79 Ra7!


click for larger view

White slithers out of danger after say 79...Rxb3+ 80 Ka4 Rb4+ 81 Ka5 Rb5+ 82 Ka6.


click for larger view

Now if black tries a discoverd check with 82...Rb1+, then 83 Ka5. If 83 ...Bc4 then 84 Rc7.


click for larger view

The point of 79 Ra7 instead of say Ra8 is that white's king can protect the rook if white decides to check on a3 by moving to b6.

Sep-08-11
Premium Chessgames Member
  andrewjsacks: Whew!
Sep-08-11  Kinghunt: I don't understand the discussion about if move matters in three fold repetition. The same position was reached with the same side to move three times. Look at the position after white's 95th, 105, and 107th moves. Three positions, all identical, all with black to move.
Sep-08-11  achk: I like the idea of 79. Rb4, and then if black plays Rb1, Ka2 and rook is untouchable because of stalemate.
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