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Leonid Shamkovich vs Vladimir Simagin
Chigorin Memorial (1951), Leningrad, USSR
Gruenfeld Defense: Russian. Smyslov Variation (D99)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jul-31-11
Premium Chessgames Member
  profK: My how the wheels fall off after black gets that humble pawn on move 13.
Oct-14-15  fispok: 25...Be3 is a nice tactical interference shot, disconnecting the bishop and it's pawn.
Jun-13-20
Premium Chessgames Member
  sachistu: A critical position is reached after 19...Qf6! Shamkovich played 20.Na4 and lost after 20...Rxa2.

Alfred Beni analyzes this position in the Austrian magazine Österreichische Schachzeitung. One of the lines goes 20.Rd3 Qf3 21.Kg1 Bxc3 22.Rxc3 Rbb8! 23.Rc1 Rfd8 24.Qxc6 Rd1+ 25.Rxd1 Qxd1 26.Kg2 Qg4+ 27.Kf1 Rd8!

However, it seems Qxc6 is fatal. If instead White plays 24.Qc7! it looks like White can survive since White can interpose 27.Qg3 in the line above.

Beni examines two other options for White (1) 20.Bd4 and (2) 20.Ne2.

Beni gives 20.Bd4 Qf3 21.Rg1 c5! 22.Rg3 Qh1+ 23.Rg1 Qxh2 24.Rg2 Qh1+ 25.Rg1 Qh4!

However, it seems he missed 22.Bxc5! and it looks like White can defend.

The other option 20. Ne2 favors Black e.g. 20.Ne2 Qf3 21.Ng3 Bh6!

So it would seem to me that while the position is difficult for White, it is not lost.

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