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Samuel Sevian vs Leinier Dominguez Perez
United States Championship (2024), Saint Louis, MO USA, rd 9, Oct-21
English Opening: Symmetrical. Anti-Benoni Variation Geller Variation (A33)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Oct-22-24  goodevans: Huge complications arose in this game in what was - or wasn't - played after 25...Ne7:


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First, White missed an outright win with <26.g6!!>. Here are just a couple of the defences that would need to have been considered:

26...Nxg6 27.Rxg4 fxg4 28.Qxg4 and what is Black to do against 29.Rxh7+ Kxh7 30.Qh5#?

26...h6 27.Qxg4 fxg4 28.Rxh6+ gxh6 29.Bd4+ and mate in 2.

After what was actually played, <26.Bxa8 Rxa8>, White still had a sizeable advantage but needed to be more wary of the impending ...Bb7+. Vacating g1 would have been best but instead Sevian relied on blocking with <27.Bd4 Bb7+ 28.Nf3>.

That handed the initiative to Black and after <28...Ng6> there's little White can do to prevent ...Nxf4 since Black's other N guards e5 and also threatens to jump into f2. However the counterattacking <29.Re1!> would have kept White in the game.

Instead Sevian chose <29.Qe6 Nxf4 30.Qxf5 Nxh3 31.Rxg4>.


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In doing that I guess he underestimated just how powerful <31...Qe7!> would be.

Oct-22-24
Premium Chessgames Member
  perfidious: <fishie> would doubtless have sussed out all the complications in this double-edged position, but this is far more difficult for even a strong GM, especially if zeitnot played a role.

After the win of exchange, at a glance, my thoughts would be--as noted above, and for better or worse--to create a bolt-hole with Re1. Relying on the interposition with Nf3 appears risky in view of White's airy king position. The actual continuation elucidated his difficulties.

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