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Dmitry Jakovenko vs Alexey Shirov
"Double Exposure" (game of the day Nov-24-2012)
Aerosvit (2007), Foros UKR, rd 9, Jun-27
Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation (B33)  ·  0-1


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Given 5 times; par: 69 [what's this?]

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sac: 45...Qxc3+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Jun-28-07  kingsindian2006: 45. ...qxc3 nice way to get your self out of a jam.. love to see situations where offense is the best defense..........
Jan-09-08  chessrat2: how about 35.e5? any suggestions
Premium Chessgames Member
  notyetagm: Black to play: 45 ... ?

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Here Shirov (Black) sees _FOUR_ pieces lined up in a row along the 7th rank:

Black a7-rook + Black c7-queen + Black e7-bishop + <UNDEFENDED> White f7-queen

Shirov knows that _THREE_ pieces in a row make a chain of pieces for a <DISCOVERED ATTACK>, so that having _FOUR_ pieces in a row is essentially <CLEARANCE> for a <DISCOVERED ATTACK>.

That is, Black needs to move his Black c7-queen out of the way (off of the 7th rank) with a <GAIN OF TIME> (<CLEARANCE>) so that he will have the alignment ♖♗♕ along the 7th rank for a <DISCOVERED ATTACK>.

So Shirov strikes with 45 ... ♕c7xc3+!.

Position after 45 ... ♕c7xc3+!.

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His tactical point is revealed after 46 ♔c2x♕c3 ♗e7-b4+.

Position after 46 ♔c2x♕c3 ♗e7-b4+ <discovered attack with check>

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The White c2-king has been <DECOYED> onto the dark square c3 by 45 ... ♕c7xc3+! 46 ♔c2x♕c3 so that now 46 ... ♗e7-b4+ opens the line of the Black a7-rook to the <UNDEFENDED> White f7-queen <WITH TEMPO (CHECK)>. That is, 46 ... ♗e7-b4+ is a <DISCOVERED ATTACK WITH CHECK> against the <UNDEFENDED> White f7-queen by the Black a7-rook.

Black regains his queen after 47 ♔c3-d4 ♖a7x♕f7, winning a pawn in the process.

Premium Chessgames Member
  notyetagm: White to play: 47 ?

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Note that 47 ♖a4x♗b4? is a mistake because then Black <RELOADS> on the b4-square with 47 ... a5x♖b4+ <CHECK> and _THEN_ takes the <UNDEFENDED> White f7-queen, winning the exchange.

(VAR) Position after 47 ♖a4x♗b4? a5x♖b4+ <reload> 48 ♔c3xb4 ♖a7x♕f7

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Premium Chessgames Member
  Abdel Irada: I would have to call 45. ...Qxc3 a notably spectacular way to exchange pawns. ;-)
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  offramp: This is one page I won't reload.
Premium Chessgames Member
  Abdel Irada: <offramp: This is one page I won't reload.>

I'd ask why, but I don't suppose you'd ever see the question.

Premium Chessgames Member
  perfidious: Even for the Lasker-Pelikan, this was a chaotic, bizarre middlegame.
Premium Chessgames Member
  Abdel Irada: <perfidious: Even for the Lasker-Pelikan, this was a chaotic, bizarre middlegame.>

This is what happens when you allow large waterfowl to play chess.

Nov-24-12  ajax333221: 45...Qxc3!

Not only he won a pawn, his bishop protected the other pawn and at the same time limited the opponent pawn movement (which makes the rook useless until he waste a move).

This kind of advantages are often decisive at the endgame, this was not the exception.

Premium Chessgames Member
  kevin86: Even with a favorable bishop situation,white still cannot save the game.
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