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Subject: Re: WAC #235 - 1.Qe4

Author: Uri Blass

Date: 02:03:13 01/04/02

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On January 04, 2002 at 03:47:06, Steffen Jakob wrote:

>Another position which Hossa doesn't solve according to my wac.epd file: WAC
>#235
>
>[D]5r2/1p1RRrk1/4Qq1p/1PP3p1/8/4B3/1b3P1P/6K1 w - -
>
>The key moves are Qxf7 and Rxf7. Hossa instead plays 1.Qe4 with something like
>+4. Dann? :-)
>
>Greetings,
>Steffen.


Yes
Qe4 is also a winning move here

My stupid program also plays Qe4 but I think that
programs should play Qxf7 or Rxf7 because they are the most simple
way to win the game.
My program's score after finising iteration 10 is only 2.34 but
I guess that it is not searching deep enough.
main line
e6e4 g7g8 e7f7 f8f7 e4b7 f7d7 b7d7 f6g7 d7g7 b2g7 b5b6 b5b6

After Rxf7+ Rxf7 Qxf7+ Qxf7 c6 that is 3 plies
from my program point of view my program says:

depth 8 score -1.34
depth 9 score -3.48
depth 10 score -4.39
depth 11 score -4.59

It means that my program probably needs at least depth 12 to
find 1.Rxf7+ or 1.Qxf7+ and it may take it some hours.


Uri



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