Stuck on PicAPix M+ - is the secret in the bottom?

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Stuck on PicAPix M+ - is the secret in the bottom? - 4/28/2012 9:46:34 AM

arik_iis

Posts: 152
Joined: 3/16/2005
From: Israel
Status: offline

I got stuck fairly early on this one... after checking it a few times I felt the breakthrough could come from the bottom row (or 3 rows...).
All I managed was to finally place one black square in the bottom row, but no breakthrough yet...

???
Is the next move realy in the three bottom rows? if so, what is the exact logic that allows it?
...or is it just an oversight somewhere else?

Help is appreciated...

Thanks,

Arik

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RE: Stuck on PicAPix M+ - is the secret in the bottom? - 4/30/2012 2:26:42 PM

Shagsbeard

Posts: 8
Joined: 3/19/2011
From: United States
Status: offline

Column 9 is a pretty safe bet to have the lower 7 trapped on the bottom. Shouldn't be hard to find a contradiction in the assumption that it's not.

< Message edited by Shagsbeard -- 4/30/2012 2:30:26 PM >

(in reply to arik_iis)

Post #: 2

RE: Stuck on PicAPix M+ - is the secret in the bottom? - 4/30/2012 4:56:32 PM

arik_iis

Posts: 152
Joined: 3/16/2005
From: Israel
Status: offline

OK.
Thanks for the suggestion.
I managed to find the contradiction, and drew these 6 black squares. Unfortunately, it had very little affect on the situation (unless I missed something) - any additional suggestions / observations?

Thanks,

Arik