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Vadim Zvjaginsev vs Benjamin Bok
Aeroflot Open (2015), Moscow RUS, rd 3, Mar-29
Formation: King's Indian Attack (A07)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Mar-29-15  paavoh: Wow, a great attack by Zvjaginsev. He is wasting no moves in this tournament so far.
Mar-29-15
Premium Chessgames Member
  Gilmoy: There was no way to plan the entire line and anticipate all of Black's responses. Surely White decided that <5..f5> must be weakening, and resolved to sac a pawn outright <7.b4> for Evans-like tempi in the center and rapid piece flow. Then he pushes in the center and on both wings.

There's no single winning move; instead, White racks up a subtle gain in <misdirections>, like a good stage magician, constantly puling the rug out from under Black's planning: <7.b4-8.d4>, <11.Qa4+ - 12.Bg5>, <15.Qh4-16.a4>. An intuitive style, rising above pure calculation: trusting that the pressure feels right, and creates more than one pawn's worth of problems. Maybe White won big on the clock.

Black could have returned the pawn somewhere.

Mar-29-15  paavoh: @Gilmoy: the clock at Chessdom showed White 25 min - Black 5 min at the finish.
Mar-29-15
Premium Chessgames Member
  iking: i can not see win for White ...
Mar-29-15  Sally Simpson: Hi iking.

Black to play.


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1...Rcc8 then 2.b7

1...Rxa6 2.bxc7 Ra8 3.Rb1 winning with Rb8.

Mar-30-15  Andrew Chapman: 3.Bh3 is another way to win, I think.
Mar-30-15  ajile: Wow definitely worth the pawn sac. Need to check 7..Nxb4 though.
Mar-30-15
Premium Chessgames Member
  morfishine: Black needed to play 20...c5 to free up his Queen rook; Its not pretty, but he needs to block the h1-a8 diagonal to buy a little time

*****

Mar-31-15  ajile: Objectively Black should be fine in this variation. That is IF he can find all the right moves with a time limit. This was a good strategy for White since worse case scenario he still gets an equal game and compensation for the pawn.


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Analysis by Rybka 3 32-bit : 17 ply

1. = (0.00): 7...Nxb4 8.d4 Bb6 9.dxe5 dxe5 10.Qe2 Nxc2 11.Nxe5 Qe7 12.g4 Nd4 13.Qe1

2. = (0.08): 7...Bxb4 8.d4 Qd7 9.c3 Ba5 10.dxe5 0-0-0 11.Qb3 Be6 12.Qb2 Bb6 13.Rd1 h6 14.exd6 Nf6 15.Bf4

19..Bc7 better than 19..Bd8

20..Rc7? 20..a6 is better but still (.44)

21..Be7? final mistake but 21..Na6 is (.99)

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