dailysudoku.com

SudoQ · Joined: 02 Aug 2011 Posts: 127

Nice layout!

This puzzle can be solved with one small step and singles...

Pat · Joined: 23 Feb 2010 Posts: 207

SudoQ · Joined: 02 Aug 2011 Posts: 127

arkietech · Posted: Wed May 09, 2012 3:55 pm Post subject:

SudoQ · Joined: 02 Aug 2011 Posts: 127

arkietech · Posted: Wed May 09, 2012 4:28 pm Post subject:

aran · Joined: 19 Apr 2010 Posts: 70

arkietech
Yes.
All m-wings have the same simple 4-term structure :
(b=a)-a=(a-b)=b :=> elims b
where
- first term (b=a) is a bivalue
- third term (a-b) is an augmented bivalue ie cell containing at a minimum the bivalue ab
- other two terms (-a) and (b) may lie across grouped cells.

If you have the structure, you have an m-wing.
if you have an m-wing, you have the structure.

That said, the status of m-wings as patterns is to my way of thinking somewhat borderline in the sense that there is no shorthand (so far as I can see) to describe them. Thus I can refer to a fish succinctly, or to a UP, or to DL-ALS, etc. But for an m-wing, I have to write the whole thing out, which somewhat defeats the purpose of having named it.

tlanglet · Posted: Thu May 10, 2012 2:08 am Post subject:

I gave up a long time ago assigning names to any pattern beyond VH & VH+ patterns as defined by Danny when he was posting puzzles.

For this puzzle, I used a simple w-wing(23)r6c7/r7c4 SL(2)r4c47; r6c4<>3.

Ted