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keith

Puzzle: DB071407 Embarassed

Keith

Asellus · Posted: Sat Jul 14, 2007 8:32 pm Post subject:

Only needed one commonly used technique.

Are you sure you didn't correct it too much?

keith · Posted: Sat Jul 14, 2007 8:48 pm Post subject:

This is where basic methods run out of steam:

jLo · Joined: 30 Apr 2007 Posts: 55

keith · Posted: Sat Jul 14, 2007 9:20 pm Post subject:

Marty R. · Posted: Sat Jul 14, 2007 9:29 pm Post subject:

From Keith's position, I also used the skyscraper to finish it off.

jLo · Joined: 30 Apr 2007 Posts: 55

jLo · Joined: 30 Apr 2007 Posts: 55

Earl · Joined: 30 May 2007 Posts: 677 Location: Victoria, KS

Keith's posted grid has <179> at R3C5.
Would it not be required to eliminate the <1> in R3C5 to have a valid skyscraper?

Perhaps I need to learn more about skyscrapers.

Earl

jLo · Joined: 30 Apr 2007 Posts: 55

keith · Posted: Sun Jul 15, 2007 4:46 am Post subject:

Here is what I used:

Earl · Joined: 30 May 2007 Posts: 677 Location: Victoria, KS

Is Keith's logic "multiple coloring."
.i.e. two coloring series connected?

Earl

keith · Posted: Sun Jul 15, 2007 9:16 pm Post subject: Re: DB July 15

Asellus · Posted: Mon Jul 16, 2007 4:11 am Post subject:

It's also known as a "Color Wing" with ab as the "Bridge" between the two "Color Wraps." (It is important to note that eliminations can only occur from the polarity opposite that of the bridge; A and B in this case.)

I'm still on the lookout for a Color Wing that uses a W-Wing as the Bridge. Haven't found one yet. Maybe someone will beat me to it?

ravel · Joined: 21 Apr 2006 Posts: 536

I was not familiar with "Color Wings". The 3 samples i saw here, can also be solved with "3 strong links" (like you have "2 strong links" in a skyscraper or kite).
From my experience with 2 or 3 strong links you can make more than 90% of the eliminations, that are possible with multiple coloring. I only saw a few samples, where you would need "grouped strong links".