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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Nov 06, 2010 9:15 pm Post subject: A Menneske, for a change |
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This Menneske is a slight bit more than a VH: | Code: | Puzzle: M5719097sh(6)
+-------+-------+-------+
| . 5 8 | . 7 9 | . 6 . |
| . 1 . | . . 6 | . 3 . |
| . . 3 | . 4 . | . . . |
+-------+-------+-------+
| . . 4 | . . . | . . . |
| 9 . . | 6 . . | 8 5 . |
| . . . | . 9 3 | . . . |
+-------+-------+-------+
| 7 . . | . . . | 5 8 . |
| . . . | 1 . . | . 9 . |
| . 4 . | . 8 . | 1 . . |
+-------+-------+-------+
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Keith |
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storm_norm
Joined: 18 Oct 2007
Posts: 1741
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| Posted: Sun Nov 07, 2010 12:48 am Post subject: |
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| Quote: | | I see a w-wing for a one stepper |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Nov 07, 2010 10:43 pm Post subject: |
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| Quote: | AUR(27)r56c39 external SIS r5c2=2,r6c7=2; r6c7<>6
(2)r5c2-(3)r5c2=r4c2-(3=6)r4c7;
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(2)r6c7; |
Ted |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sun Nov 07, 2010 11:00 pm Post subject: |
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Yes,
A very easy W-wing -26 (excited by 36) did it for me.
The basics were pretty good, I thought.
Keith |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Nov 08, 2010 1:09 am Post subject: |
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I took a different perspective on the UR:
| Code: | <27> UR[(6)r6c39 = (3)r5c9]r56c39 - (3=6)r4c7 => r6c7<>6
+-----------------------------------------------------+
| 2 5 8 | 3 7 9 | 4 6 1 |
| 4 1 9 | 2 5 6 | 7 3 8 |
| 6 7 3 | 8 4 1 | 9 2 5 |
|-----------------+-----------------+-----------------|
| 5 36 4 | 7 2 8 | 36 1 9 |
| 9 23 27 | 6 1 4 | 8 5 27+3 |
| 1 8 27+6 | 5 9 3 | 2-6 4 27+6 |
|-----------------+-----------------+-----------------|
| 7 9 1 | 4 36 2 | 5 8 36 |
| 8 26 5 | 1 36 7 | 236 9 4 |
| 3 4 26 | 9 8 5 | 1 7 26 |
+-----------------------------------------------------+
# 19 eliminations remain
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Peter: Yes, I crammed three streams into a strong link. _  _ |
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ronk
Joined: 07 May 2006
Posts: 398
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| Posted: Mon Nov 08, 2010 2:27 am Post subject: |
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| daj95376 wrote: | I took a different perspective on the UR:
[code] <27> UR[(6)r6c39 = (3)r5c9]r56c39 - (3=6)r4c7 => r6c7<>6
...
Peter: Yes, I crammed three streams into a strong link. _ _ |
I'm guessing you refer to the three extra candidates ... but I see only one inference and one inference stream: either the AUR is a type 2 UR or it's a type 1 UR. |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Nov 08, 2010 7:26 am Post subject: |
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| ronk wrote: | | I'm guessing you refer to the three extra candidates ... |
In a recent discussion with Peter, he used a strong link based on two guardian cell candidates. I suggested that he use forcing chain streams for guardian cell candidates because the logic would be consistent when he encountered more than two candidates.
Now, I could/should have written three streams, one for each extra candidate, but I chose to use a strong link instead -- going against my advice to Peter. A fact that I fully expected him to catch!
BTW: I originally saw it as a forcing chain on (6)r6c3:
(6)r6c3 - (6)r6c7
(6)r6c3 = UR Type 3 - (6)r6c7
Regards, Danny |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Mon Nov 08, 2010 4:00 pm Post subject: |
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| daj95376 wrote: | | A fact that I fully expected him to catch! |
(Danny, I made exactly that point about using strong-link notation in URs/ADP in reply to the original post.)
But I bet you couldn't resist using it because it seems so much more elegant than a multi-stream layout - though I accept this is the only approach that scales to 2+ streams. 
Nice move by the way  |
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daj95376
Joined: 23 Aug 2008
Posts: 3854
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| Posted: Mon Nov 08, 2010 6:33 pm Post subject: |
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| peterj wrote: | | daj95376 wrote: | | A fact that I fully expected him to catch! |
(Danny, I made exactly that point about using strong-link notation in URs/ADP in reply to the original post.)
...
Nice move by the way |
Yes, I couldn't help being pulled over to The Dark Side. _  _
Thanks! |
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Myth Jellies
Joined: 27 Jun 2006
Posts: 64
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| Posted: Tue Nov 09, 2010 1:46 am Post subject: |
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You can also use the UR as a weak inhibiting link for the base digits
(6=27)r6c39 -UR- (27=3)r5c39 - (3=6)r4c7 => r6c7 <> 6
Even useful for those times when you have "solved" one of the UR cells |
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