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Fabiano Caruana vs Evgeny Tomashevsky
Tal Memorial (2012), Moscow RUS, rd 4, Jun-12
Spanish Game: Closed Variations (C84)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 16 times; par: 41 [what's this?]

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Kibitzer's Corner
Jun-12-12  luzhin: Black's exchange sac is desperate, but the trouble is that after 24...Bxc4 25.Qxc4 Rd1 simply 26.Kf1! and Black's Q is stuck, while White will soon pick off the stranded b3 pawn.
Jun-12-12
Premium Chessgames Member
  Honza Cervenka: Black apparently overestimated the position with Bishop stuck on b1. It was not worth of Pawn he sacced for it. Of course, sac of exchange was a desperation, which only shortened his misery in this game.
Jun-12-12  lemaire90: I don't get some of black's moves.

18...c4, why sack this pawn ?

24...Qc7, why sack the exchange ? Espescially after Be6 had been played, preparing to capture the knight.

These two moves seemed to lead to a straight up win soon enough by white.

Jun-12-12  chess defense: 18...c4..most probably to activate the black bishop.....24....Qc7....as the queen is in threat..the best way for an active counterplay for black..is to exchange the sac...i guess tomashevsky played the last few moves inaccurately....or may be i m wrong..
Jun-12-12  Eyal: 18...c4 makes sense as a positional pawn sacrifice - one might say it's the most active way to defend the pawn on e5... In fact, it's already been played a few years ago by Aronian - I Cheparinov vs Aronian, 2008. But compared to Aronian, you can see how Tomashevsky completely misplayed his position in the following moves, and the exchange sac was indeed already desperation. He really went down in this game almost without a fight.
Jun-12-12  AVRO38: The race is on b/w Caruana and Nakamura to see who will be the first American to pass Fischer's 2785....
Jun-14-12  visayanbraindoctor: The above position


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and


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from I Cheparinov vs Aronian, 2008

feature a thematic pawn sacrifice c4 in a specific pawn structure that results in an increase in piece activity as its main compensation.

The first such game that features the c4 pawn sac in order to increase piece activity in a similar pawn structure that I know of is

Dus Chotimirsky vs Capablanca, 1925

where in this position


click for larger view

Black played c4!? The main difference is that Black did not have a strong b-pawn on the b3 square, which probably makes Capablanca's sac more risky; however, the theme is the same.

It's a good idea to study how Aronian and Capablanca handled the resulting play after the sacrifice.

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