12 December 2014

An Unsound Sacrifice?

In a game that permitted too little time for thinking. I gave up a knight to expose my opponent's king. As is the norm in blitz, we both misplayed the continuation.

This position arose via the Ponziani.

Stripes,J (1792) -- Internet Opponent (1832) [C44]
Online Chess Site, 12.12.2014

White to move


28.Nh2 is objectively better.

28...hxg5 29.Qxg5+ Kh8? 

After 29...Kh7 30.Nh4 Rg8 31.Qf6 Nc4 32.Qxf7+ Rg7 33.Qf6 Bd3 34.e6 Qd6 35.h6 Rgg8 36.Qf7+ Kh8 37.Qf6+= White can abandon his lunacy with a perpetual.

White to move


30.g4! Bxg4 31.Qf6+ Kh7 32.Bc2+ Bf5 33.h6 Rg8 34.Qxf7+ Kh8 35.e6 with continuing pressure. White should win back the sacrificed material and more. 35...Qd6 36.Qf6+ Kh7 37.Bxf5+ Nxf5 38.Qxf5++-

30...Kh7 31.Nh4 Qe6 32.Qg5?? 

32.Nxf5 Nxf5 33.Bc2 Qxf6 34.exf6 Kh6 35.Bxf5+-.

Black to move

32...Rg8 33.Qd2 Nc4 34.Qc1 b5 35.Bc2 

35.Nxf5 was White's last hope for a playable position. 35...Nxf5 36.Bc2 and Black is only slightly better.

35...Bxc2 36.Qxc2+ Kh8–+ 

White is lost, but Black is terribly short on time.

37.b3 Nb6 38.Re3 Nd7 39.Rf3 Rg5 40.Re1 Reg8 41.Ree3 Rxh5 42.Rf4 Black forfeits on time 1–0

1 comment:

  1. ok, I was reading along and wondering what I would do if I was in your shoes....I'm completely playing it your way to 30. Qf6+

    30. Kh7 is better defense than Kg8

    and my next move would be 31. h6 if he met that with Rg8 32. Qf7 and maybe go for the draw, repeating Qf6/Qf7...

    if its Kg8 I think your have checkmate on f7.