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Vladimir Petrov vs Roberto Grau
"Q-Mobile" (game of the day Aug-14-2021)
Buenos Aires Olympiad Final-A (1939), Buenos Aires ARG, rd 5, Sep-06
Queen Pawn Game: Zukertort Variation (D02)  ·  1-0



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Kibitzer's Corner
Premium Chessgames Member
  chancho: Well played by Petrov. The pawn formation kind of reminds me of this game:

Capablanca vs K Treybal, 1929

Oct-18-09  badenbaden: R. GRAU: «Tratado General de Ajedrez»
IV «Estrategia Superior»
23.Ra7 Kf7
<"Las negras se han hecho el siguiente razonamiento: mi adversario puede atacar el peón b7 sólo con dos piezas y pueden defenderlo también con dos. Por lo tanto na hay aparentemente ningún peligro. Pero se han olvidado de algo muy importante, y es que el citado peón que las blancas pueden atacar con la torre en a7 y el caballo en a5, sólo puede ser sostenido con la torre y la dama. Queda entonces al blanco libre su dama para actuar y a las negras sólo el caballo. Y como éste no podrá parar todas las entradas de la dama sin grandes debilidades, en determinado momento se hará factible el sacrificio en b7, lo que desmoronará la resistencia negra. «Debo ganar -dijo Petrovs en esta posición a un ajedrecista argentino que miraba la partida y creía que ésta debía ser tablas- porque tengo una dama muy activa contra un caballo de Grau, que tropieza con la angustia de la falta de espacio para moverse». Y este concepto magistral de la posición tuvo pronto clara evidencia.">

<"Una partida de indudable valor didáctico."> [A. Alekhine: «Mis Mejores Análisis».]

Premium Chessgames Member
  GrahamClayton: Brilliant play by Petrov. After tying Black up in knots defending the queen-side, he switches to the King side, gets the black knight offside, and then returns to the queen-side for the final winning combination.
Jan-02-14  paulofx2071: R. GRAU: «Tratado General de Ajedrez"
35)Nxb7 resingne (1-0)

and not 35)..... Rxb7

Premium Chessgames Member
  bharat123: Why not 28.Nxb7 and if 28..Rxb7 29.Qa6 Rb8 30.b7 wins.
Jun-05-15  jvv: 30.b7 Qc7 and I don't see how white wins.
Premium Chessgames Member
  MissScarlett: <V for Victory>
Premium Chessgames Member
  Fusilli: 32.g5 burns the bridges. If it doesn't work, white will have to settle for the draw. But Petrov calculated well.

If 34...Kd8:

click for larger view

35.Nxb7+ Rxb7 36.Ra8 Rb8 37.Rxb8 Qxb8 38.Qa7 Kc8 39.Qf7 winning.

click for larger view

Premium Chessgames Member
  Phony Benoni: As long as black's knight can be posted on d7, White's queenside sacrifice may not work Black's queen can always go to b8 and be protected.

So White's queen shifts to the kingside. Blac winds up playing 30...Ng8 to defends over there, whereupon 32.g5 denies it access to f6 and hence d7. The mobile White queen then zooms back to the other side, and the Nxb7 combination goes on as scheduled.

Jul-17-21  Brenin: I know about good and bad bishops; this must be the definitive example of a bad knight.
Premium Chessgames Member
  An Englishman: Good Evening: Good title for today's game.
Jul-17-21  Brenin: <An Englishman>: Good title, indeed, given the White Q's switching of the attack from one side of the board to the other, but is it a pun? The only reference I could find for "Q-Mobile" was a recently bankrupt Pakistani smartphone company, and that seems a bit esoteric even for CG.
Jul-17-21  Ironmanth: Tremendous concept and execution here by Petrov. Y'all have a great weekend!
Jul-17-21  ajile: In a stonewall setup being able to advance your c pawn to your opponent's 4th rank without any downsides is known to be beneficial. White here has a space advantage and can attack by further advancing his q-side pawns.
Jul-17-21  ajile: <Phony Benoni: The mobile White queen then zooms back to the other side, and the Nxb7 combination goes on as scheduled.>

The White setup with advanced pawns and locked position is well known. Black must also always watch for the threat of Nxc6 releasing the advanced pawns. Thus the attacking player always wants to keep at least 1 knight on the board in these endgames.

Premium Chessgames Member
  Phony Benoni: <Breniin> If anything, the "pun" is a variation on the company name "T-Mobile". I used it to describe the White queen's activity (as opposed to Black's queen), so it's more of a game description than a traditional pun.

But the game was good, even if the pun wasn't.

Aug-04-21  Brenin: An interesting game and an acceptable pun, but no better than they were here two weeks ago.
Aug-04-21  sorokahdeen: The strategy appears in more than one game. It looks like what you find in the Capablanca game that's been cited but also in Maroczy vs Suechting.

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