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Yury Markovich Shulman vs Alexander Shabalov
US Championship (2010), St Louis, MO USA, rd 3, May-16
King's Indian Defense: Orthodox Variation. Gligoric-Taimanov System (E92)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
May-19-10  YouRang: In this game, white sacrificed a pawn early on, but ended up with little to show for it. In fact, black was better most of the way afterwards.

Black was on the edge of winning when he made his first serious mistake on move 35:


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35...Rxd5? <an impatient capture that leaves black's f and b pawns indefensible and ties his rook to an awkward defense of Pc5> 36.Re7! <forks and wins back a pawn>

Much better was 35...b6! guarding the Pc5 with the b-pawn. White's d-pawn isn't going anywhere and white has no way to defend it, which means that black could have taken it next move without losing any pawns, e.g. 36.Ne2 Rxd5 37.Re7 <forks a and f pawns, but...> Rd7! guards both without worry of Bxc5 since Pc5 is guarded by Pc6.

After this mistake, black's advantage dwindled away, until he made the BIG mistake on move 58:


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58...Rd3?? 59.g6+!! Ke7 <note: 60...Kg8? 61.Rc8#> 60.g7 Rxd4 61.g8=Q <mate in 4>

In this position, Black needed to find 58...Rg4!, keeping the g-pawn at bay with threat to take Pf4 with check. Any other move loses!

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