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Bug + 1

 
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Captain Pete



Joined: 09 Jun 2007
Posts: 55
Location: Oley, PA
PostPosted: Sun Apr 27, 2008 3:31 pm    Post subject: Bug + 1 Reply with quote
In the discussion of another recent puzzle, someone referred to a BUG + 1 "within a square." I am familiar with the BUG +1 in the entire puzzle, ie, all the remaining cells in the puzzle have two digits except one with three. But, how does a BUG + 1 "within a square" work.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Apr 27, 2008 8:27 pm    Post subject: Reply with quote
I do not recall the comment. Maybe you should ask the question in the original thread?

I might guess that the comment means the BUG+1 was solved by looking at a 3x3 box. Figure out the deadly pattern (DP), which is when each unsolved candidate appears exactly twice in the box. Then, use the candidate(s) in the +1 cell that destroy the DP.

(Actually, you should also check that the same DP arises when you look at the row and column.)

Keith
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