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Alexander Motylev vs Viktor Kuznetsov
Russian Team Championship (2011), Olginka RUS, rd 1, Apr-12
Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation (B33)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Apr-19-11  Shams: Motylev making the 11.c4 line look almost like a forced win for white.
Apr-19-11  hedgeh0g: 28...Rb8 threw the game away. Looks like Black was doing fine up to that point.
Apr-19-11  Shams: <hedgeh0g> But after 28.a3 black can't prevent the appearance of the pawn-pair b4/c5, supported by the bishop and visually much more dangerous than black's own pawns.


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What else is black to do?

Apr-19-11
Premium Chessgames Member
  perfidious: <Shams> is correct here, <hedgeh0g>, as 28....bxa3 29.b4 Qb5 fails to the shot 30.Rxd4 winning.
Apr-19-11  hedgeh0g: Yes, but that's why Black plays 28...axb3 29.axb4 Qa4 and how does White make progress? The knight and queen seem to sufficiently blockade the white pawns and White has to keep an eye on the Black b-pawn. White could consider an exchange sac, but then the back rank is left more vulnerable to the b-pawn threat. Fritz 11 agrees with me and evaluates 28...axb3! as equal.
Apr-19-11  hedgeh0g: This game strikes me as being very similar to a recent Nisipeanu - Kotronias game: Nisipeanu vs Kotronias, 2011.

There, Black played axb and got crushed by the passed pawns. Perhaps Black had this game in mind and was therefore hesitant to make the capture.

Apr-24-11  Shams: <hedgeh0g> Nice work, of course I didn't see your ...Qa4 pinning. Stupid question, but there's no chance white's pawn promotion would be past Fritz 11's search horizon?
Apr-24-11  hedgeh0g: <Shams> Possibly, but I doubt White's pawns will come close to queening (at least in the middlegame). To make progress, White will probably need to sacrifice an exchange at some point in order to try and break the blockade and perhaps round up the b-pawn. In the meantime, Black has plenty of counterplay. He can attack White's b-pawn, perhaps advance his pawn to b2 and play for Qa1 and play on White's slightly weak back rank after an exchange sac with moves like ...Re8.

Essentially, the more White makes progress, the more Black is able to make progress and so the position is dynamically balanced after ...axb.

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