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Subject: Re: White to move. Can you find correct to move without using Engine?

Author: Dagh Nielsen

Date: 07:53:02 12/01/05

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Here's my thought process as I recall it, based on the information that a queen
win is possible:

1) Trying Bg3-d6 (magnetic idea or something), quickly discarded after simply
Qxd6 and no reasonable follow up moves for white.

2) Nd5, another queen threat. Now exd5 and how to follow up to win the queen?

a) Idea exd5 and if Qxe2, then maybe mate starting with dxc6 or Rxc6? Quickly
discarded, no mate, and besides the queen on e7 is guarded by Bf8, so Qe2xe7
would not be a queen win.

b) Looking a bit more on black's king position and white's possibilities, I
assumed that a queen win would only be possible due to a mate threat. Bishop on
g3, king on c8, and pawns b7-c6, is a pattern that suggested a "scissor" mate,
and then it all culminated when Rxc6+ and the possibility Qe2-a6 was combined.

It took about 30 seconds, I think, but this thought process was heavily guided
by the information that a queen threat was possible. I do think, though, that
past a certain level most players would not miss this shot. The guiding force is
the recognition of the "scissor" mate possibility, and I believe many players
would recognice this feature of the position and take it into account during
calculations at each move.

Regards,
Dagh Nielsen

On December 01, 2005 at 03:03:43, P L Patodia wrote:

>The following position reached after Black's 13th move. The game was played in
>1983 (both White and Black amateur players)
>
>[d]2kr1b1r/pp1nq2p/1np1ppp1/8/3PP3/2N3B1/PP1NQPPP/2R2RK1 w - - 0 14
>
>Can you find the winning move?
>
>The correct move wins the Black Queen. It is very easy for a chess engine. The
>question is whether you can find out.
>
>Thanks and Regards,
>
>P L Patodia



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