dailysudoku.com

kragzy · Joined: 01 May 2007 Posts: 112 Location: Australia

After the usual cleaning up operations, and one non-productive XYZ wing, I ended up here:

nataraj · Posted: Tue May 06, 2008 5:45 am Post subject:

BEWARE of the easy way.

I must admit, I did it.

I took the UR 29 r38c13 but it absolutely totally spoiled the fun.
(Premature Elimination, or eliminatio praecox...)

After the UR, the puzzle melts down, it is only a question of how fast one can write.

Going to look for other solutions now (which means start again ...)

nataraj · Posted: Tue May 06, 2008 6:00 am Post subject: Re: May 6 VH

I did not start again. I used kragzy's grid.

andras · Joined: 31 Oct 2007 Posts: 56 Location: Mid Wales

Heck, I did it the easy way with the UR.

Why have an Easy on the Bank Holiday and a VH on the first day back at work Wink

John

nataraj · Posted: Tue May 06, 2008 8:55 am Post subject:

andras · Joined: 31 Oct 2007 Posts: 56 Location: Mid Wales

Victor · Joined: 29 Sep 2005 Posts: 207 Location: NI

Shame about the UR, which does make it trivial. Being a retired person Laughing

, with family gone, I have the time to try again, and it is a nice puzzle if you ignore it.
An ER kills the <6> in r4c4, & then there's an XYZ-wing pivoted on r5c5, which exposes an X-wing in r34, which exposes an XY-wing pivoted on r8c3.

sdq_pete · Joined: 30 Apr 2007 Posts: 119 Location: Rotterdam, NL

For the record, the following 'X' moves solve it from the following position:

sheryl · Joined: 24 Sep 2007 Posts: 64 Location: New York

i don't know why, but mine was just deductions. then i ended up with 29s in r27 c89 and 29s in r38 c13. this i believe led to it being a puzzle that could have more than one solution in that i placed the 2s and 9s and i could change it and put the 9s where the 2s were. does anyone know why this happend to me?

George Woods · Joined: 28 Mar 2006 Posts: 304 Location: Dorset UK

nataraj · Posted: Tue May 06, 2008 5:48 pm Post subject:

nataraj · Posted: Tue May 06, 2008 5:54 pm Post subject:

George, the xyz works as follows:

r3c5 can be 5 or 6.
if it is 5, the 5 in r4c5 is toast.
if it is 6, r5c56 turns into a naked pair 35, and again r4c5 cannot be 5.

storm_norm · Joined: 18 Oct 2007 Posts: 1741

{2,9} UR type 1

sheryl,
you found a Unique Rectangle type 1 on the {2,9} pairs in columns 1 and 3.

the 2 and 9 can be removed from r8c1 to avoid the deadly pattern. if you didn't already figure this out, this is the "easy" way of doing the puzzle. If the technique you uncovered is new territory, then good for you.

nataraj · Posted: Tue May 06, 2008 7:17 pm Post subject:

The way I read sheryl's post was that the deadly pattern had already manifested itself, i..e. the 3 in r8c1 was GONE ...

That would certainly be the result of a mistake, since 3 in r8c1 is part of the solution.

storm_norm · Joined: 18 Oct 2007 Posts: 1741

nataraj · Posted: Tue May 06, 2008 7:23 pm Post subject:

cgordon · Joined: 04 May 2007 Posts: 769 Location: ontario, canada

I’m not into UR’s - but today’s UR was so blatant and in your face, it left no opportunity for us erudite experts to strut our stuff.
(Was gonna add one of them smiley emoticons to that - but figuring how to do that out is up there with Medusa wings or whatever)

nataraj · Posted: Tue May 06, 2008 8:28 pm Post subject:

cgordon · Joined: 04 May 2007 Posts: 769 Location: ontario, canada

Nataraj: I click on a smiley emoticon and all I get is a ":D"

montalbano1944 · Joined: 26 Apr 2008 Posts: 6

For me it's a UR; R's 3 and 8, C's 1 and 3 so 29 can be removed from R8,C1.