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Bojan Vuckovic vs Gata Kamsky
Aeroflot Open (2011), Moscow RUS, rd 9, Feb-16
Slav Defense: Chameleon Variation. Advance System (D15)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Feb-17-11  paavoh: Why on earth did White play 31.dxe5 and gave Black a passed pawn? Exchange one Rook, bring King to the center and defend in the slightly inferior end game. Was he running out of time?
Feb-17-11
Premium Chessgames Member
  tamar: <paavoh: Why on earth did White play 31.dxe5 and gave Black a passed pawn?>

Probably an instance of not liking 31 Rxe5 Rxe5 32 Rxe5 Rb5 33 Re2 Rb3 34 Rd2 when White has been forced to allow the King to reach the e6 square from which it can threaten Kf5 and also support the b6-c5 pawn pushes.


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Maybe there is a way to hold, but White has no play, whereas with two rooks, there are chances of counterplay should Black falter.

Feb-17-11  YouRang: Looks like losing move may have been white's 33rd move:


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It looks like white has decent drawing chances if he plays 33.Rf5!, threatening black's Pg5 while adding an extra guard to Pe5. If 33...Rg8, the 34.g4 to block the g-pawn and guard the Rf5, giving white a pretty solid position.

However, white opted for the too-slow <33.Rh3?>, and Kamsky smartly played <33...Kd7>, which discovers a double-rook attack on Pe5 and allows black to block checks from the h-file with his rook.


click for larger view

At this point, white has little hope of preserving the e-pawn. Black is clearly better, probably winning.

Feb-18-11  paavoh: @tamar: I guess you are right. Seemed to me that defeat just came sooner after 31.dxe5. Well, not everyone is a masochist wanting to extend the torture :-)
Feb-19-11  Nut: < YouRang: Looks like losing move may have been white's 33rd move ...

It looks like white has decent drawing chances if he plays 33.Rf5!, threatening black's Pg5 while adding an extra guard to Pe5. If 33...Rg8, the 34.g4 to block the g-pawn and guard the Rf5, giving white a pretty solid position.>

33. Rf5? would allow black to push his d-pawn passer after 33 ...Rg8. White needs his rook to stay on the 3rd rank. 33. Rg3 forces black to protect his g-pawn while preventing black from advancing Mr. d-pawn. Should've moved 33. Rg3 in my completely untrained amateur opinion.

Feb-19-11  YouRang: <Nut><33. Rf5? would allow black to push his d-pawn passer after 33 ...Rg8. White needs his rook to stay on the 3rd rank. 33. Rg3 forces black to protect his g-pawn while preventing black from advancing Mr. d-pawn. Should've moved 33. Rg3 in my completely untrained amateur opinion.>

Well, you may be right. Or maybe black is already winning by move 33.

What do you think if <33.Rg3> is met by <33...Rg8>?

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