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Leinier Dominguez Perez vs Yannick Pelletier
41st Biel International Chess Festival (2008), Biel SUI, rd 7, Jul-28
Spanish Game: Closed Variations (C84)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
Jul-28-08  shr0pshire: Good fight, but this probably was drawn after move 25, but I don't have a board to find out the fatal mistake by Pelletier.
Jul-28-08
Premium Chessgames Member
  kamalakanta: Starting with 28. Rb7 Leinier outplayed his opponent. As a matter of fact, all the simplifications leading to the 25th move were brilliant. Material is even, but White has a centralized Queen, and a rook already in an open file.

Capablanca would be proud of him. Also Chigorin, who was, like Leinier, very good maneuvering with the knights!

Jul-28-08
Premium Chessgames Member
  kamalakanta: 27...h6 was necessary, giving some breathing room to the King.
Jul-28-08  Bobsterman3000: Doesn't this look somewhat salvageable for black until 41...Re6, an obvious blunder that loses a pawn immediately.

Jul-28-08
Premium Chessgames Member
  4tmac: White's position is hanging? You forgot who is working the R+N.


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. R-c7+! and black resigns 5 moves later.

Jul-28-08
Premium Chessgames Member
  messachess: Yeh, 51.Rc7+ was a real pretty move to find. If...KxN, 52.f5+ Rxf5 53.Pxf5, and the <a> pawn falls to the white R. Nice.
Jul-29-08
Premium Chessgames Member
  Honza Cervenka: 51...Kg8 seems to be a bit better retreat of the King.
Jul-29-08  euripides: Why not 47...Nxa5 ? During the game we looked at 48.g4+ Ke6 49.Ra4 winning the a pawn. If 49...Nb3 then 50.Rxa6+ Ke7 51.Ra7+ Kd6 52.Rxg7 Rxf4 53.Nf7+ winning the h pawn, when Black's activity doesn't seem sufficient compensation for the two pawns. But if 49...Nb7 50.Rxa6 Ke7 51.Ra7 (perhaps Ra4) Rb6 Black might hold.
Jul-29-08  madlydeeply: This IS a Capablancesque game. Mark my words, Dominguez-Perez is ambitious. We will see more of him in the future. I'm starting to be smitten...sigh.

Jul-29-08  percyblakeney: The Rf8-a8-c8-e8 thing just before the first time control looks strange and loses lots of time. 38. ... Rb8 looks like a safe way to quickly exchange down to a drawn endgame (if 39. Nd4 it's just to play Rb1+ followed by Ra1 and picking up the a-pawn).
Aug-11-08  notyetagm: <messachess: Yeh, 51.Rc7+ was a real pretty move to find. If...KxN, 52.f5+ Rxf5 53.Pxf5, and the <a> pawn falls to the white R. Nice.>

Black has just played 50 ... ♔e7-f7 Δ 51 ... ♔f7x♘g6. So does Dominguez (White) retreat the threatened White g6-knight?

White to play: 51 ?


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No, Dominguez plays the excellent tactical shot 51 ♖c6-c7+!.

Position after 51 ♖c6-c7+!


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http://www.chessbase.com/newsdetail...

<51.Rc7+! Nice trick: Black cannot play 51...Kxg6 because of 52.f5+ Rxf5 53.gxf5+ Kxf5 54.Rc6+. Now the king should go to g8, but a discouraged Pelletier takes the wrong path and runs into a dashing attack by his Cuban opponent:>

So the tactical point of 51 ♖c6-c7+! is that it makes the White g6-knight <TABOO>.

Dominguez is using the tactical idea that I call <YOU CANNOT GO FORWARD IF YOU CANNOT GO BACK>, or <IF YOU ARE ATTACKED, YOU MUST GO BACK>. This idea is very clearly explained by this variation.

If Black captures the White g6-knight with 51 ... ♔f7x♘g6??, then the Black king has gone _FORWARD_ to the g6-square but His Majesty cannot go _BACK_ the way he went forward (he cannot _BACKTRACK_) because the White c7-rook denies Him access to the f7-square. Not only is the f7-square cut off by the White c7-rook but also so are the g7- and h7-squares. In fact not only does the Black g6-king have <NO RETREAT> after 51 ♖c6-c7+! ♔f7x♘g6?? but he is also <STALEMATED>.

The simple winning variation after 51 ... ♔f7x♘g6?? given on the chessbase site is shown below.

(VAR) Position after 51 ... ♔f7x♘g6?? 52 f4-f5+ ♖f6xf5 53 g4x♖f5+ ♔g6xf5 54 ♖c7-c6


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Aug-11-08  notyetagm: <The important question regarding <PIECE SAFETY> that you have to keep in mind at _ALL_ times is as follows: <<<if a piece moves forward from a square it cannot go back to and it gets attacked, then where can it safely go?>>>. Often the answer is nowhere! <<<WETESCHNIK> says very clearly that before you put a piece on a square or _COMMIT_ a piece to a square, you must have a plan to retreat that piece to safety if it gets attacked, else your piece can be <TRAPPED> and the game is almost certainly lost.>>>

This neat tactical device (attacking a piece (51 ♖c6-c7+!) so that it cannot go forward (51 ... ♔f7x♘g6??) because it has no retreat (flight) squares) makes it impossible to sometimes defend a square or piece indirectly by making it taboo, as Dominguez does here with the excellent 51 ♖c6-c7+!, gaining the <7TH RANK> with a <GAIN OF TEMPO> and indirectly <DEFENDING> his White g6-knight to boot.

Aug-11-08  notyetagm: IF YOU ARE ATTACKED YOU MUST GO BACK: 51 Rc6-c7+! Black f7-king has no retreat if it takes g6-knight

YOU CANNOT GO FORWARD IF YOU CANNOT GO BACK: 51 Rc6-c7+! Black f7-king has no retreat if it takes g6-knight

STALEMATED KING: 51 ... Kf7xNg6?? Black king will be stalemated, losing material

TABOO!: 51 ... Kf7xNg6?? Black g6-king now stalemated, has no retreat

LATENESS OR WEAKNESS MEANS YOU DO NOT CONTROL SQUARES: 51 ... Kf7xNg6?? Black g6-king badly misplaced (stalemated)

TRAPPED PIECES (NO RETREAT!): 51 Rc6-c7+! Kf7xNg6?? c7-rook cutsoff retreat of Black g6-king

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