SudoCue Users Forum Index SudoCue Users
A forum for users of the SudoCue programs and the services of SudoCue.Net
 
 FAQFAQ   SearchSearch   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Search found 35 matches
SudoCue Users Forum Index
Author Message
  Topic: Medusa Multi-Coloring
keith

Replies: 0
Views: 5232

PostForum: Solving Guide & Glossary   Posted: Thu Dec 27, 2007 10:40 pm   Subject: Medusa Multi-Coloring
Ruud,

You say you are looking for examples. If you ignore solving by a UR, this is an example of Medusa multi-coloring:

http://www.dailysudoku.com/sudoku/forums/viewtopic.php?p=9006

Best wis ...
  Topic: X-Wing not very common?
keith

Replies: 2
Views: 4023

PostForum: Solving Techniques & Tips   Posted: Sat Sep 22, 2007 9:41 pm   Subject: X-Wing not very common?
The Daily Sudoku "very hard" puzzles require (at most) X-wing, XY-wing or XYZ-wing techniques.

http://www.dailysudoku.com/sudoku/

So, X-wings are fairly common in these puzzles.

Kei ...
  Topic: July 8 Nightmare
keith

Replies: 4
Views: 3968

PostForum: Daily Sudoku Nightmare & Archive   Posted: Sun Jul 09, 2006 12:13 am   Subject: This is a BUG-Lite?
Ruud,

This is a BUG-Lite Question Clearly, I am about to learn something Idea

Keith
  Topic: July 8 Nightmare
keith

Replies: 4
Views: 3968

PostForum: Daily Sudoku Nightmare & Archive   Posted: Sat Jul 08, 2006 7:18 pm   Subject: July 8 Nightmare
Today's Nightmare is kind of special!

000001607908070010020000000036005000004060900000200460000000050090030108802700000

Applying the usual, plus an XY-wing and a Type 2 UR, you get here:


+- ...
  Topic: June 12: A full house of Unique Rectangles!
keith

Replies: 1
Views: 2415

PostForum: Daily Sudoku Nightmare & Archive   Posted: Mon Jun 12, 2006 9:13 pm   Subject: June 12: A full house of Unique Rectangles!
Hi, Ruud:

Today's Nightmare (Monday, June 12, 2006) has a full house: Types 1, 2, 3, and 4 Unique Rectangles. And then, one more, which is an untyped variant of a Type 6.

Keith
  Topic: May 12, 2006: Do you UR?
keith

Replies: 1
Views: 2225

PostForum: Daily Sudoku Nightmare & Archive   Posted: Thu May 11, 2006 10:33 pm   Subject: May 12, 2006: Do you UR?
Today's Nightmare can be solved with basic methods and a single Unique Rectangle.

If you do not use the UR, the solution is much tougher.

David, is there a constellation lurking in this particul ...
  Topic: May 6, 2006: UR's and Coloring
keith

Replies: 3
Views: 3409

PostForum: Daily Sudoku Nightmare & Archive   Posted: Sun May 07, 2006 11:04 pm   Subject: May 6, 2006: UR's and Coloring
David said:

I think this connection between "non-unique rectangles" and double-implication chains is fascinating ... I'd like to understand what causes it to be so. dcb

Doubly so, beca ...
  Topic: May 6, 2006: UR's and Coloring
keith

Replies: 3
Views: 3409

PostForum: Daily Sudoku Nightmare & Archive   Posted: Sun May 07, 2006 3:43 am   Subject: May 6, 2006: UR's and Coloring
Today's puzzle is interesting. With possibilities, the starting point is:


+----------------------+----------------------+----------------------+
| 5 29 289 | 4 6 1789 | ...
  Topic: Unique unique?
keith

Replies: 22
Views: 19952

PostForum: Puzzles   Posted: Thu May 04, 2006 11:25 pm   Subject: Unique unique?
David,

My message was not really to you: It was to those who rant and rave over other people's solution techniques.

I am also a logic person, but I think my logic is pattern recognition. Your ...
  Topic: Unique unique?
keith

Replies: 22
Views: 19952

PostForum: Puzzles   Posted: Thu May 04, 2006 5:05 pm   Subject: Unique unique?
David,

My entire message was not intended to be taken too seriously.

Keith
  Topic: Unique unique?
keith

Replies: 22
Views: 19952

PostForum: Puzzles   Posted: Wed May 03, 2006 10:47 pm   Subject: A swamp of semantics
David,

So, we recognize a UR (and its result) and then we find another way to reason the same result.

This is logically defensible as not using Uniqueness?

Actually, it seems to me: Assume t ...
  Topic: Unique unique?
keith

Replies: 22
Views: 19952

PostForum: Puzzles   Posted: Sun Apr 30, 2006 5:02 pm   Subject: Valid?
According to Sudoku Susser, this is not a valid puzzle (it does not have a unique solution):



+----------------------+----------------------+----------------------+
| 2 4789 5 | 348 ...
  Topic: Forum reorganized
keith

Replies: 3
Views: 4735

PostForum: General Website Comments   Posted: Tue Apr 25, 2006 1:05 am   Subject: Forum reorganized
David,

and with apologies to Ruud. (Off topic.)

Is Someone_Somewhere still somewhere out there?

I am not sure it is one of his Zen Sudoku's, but Emily's puzzle has a community, who have not ...
  Topic: April 19, an outsider
keith

Replies: 5
Views: 4713

PostForum: Daily Sudoku Nightmare & Archive   Posted: Wed Apr 19, 2006 9:33 pm   Subject: Defeated?
I get to a stage where all the possibilities are pairs, except for four squares which each have three possibilities. If I can eliminate <7> from three of these squares, the fourth solves the pu ...
  Topic: April 17, 2006: Type 1 / 6 Unique Rectangle
keith

Replies: 2
Views: 3272

PostForum: Daily Sudoku Nightmare & Archive   Posted: Mon Apr 17, 2006 5:25 am   Subject: April 17, 2006: Type 1 / 6 Unique Rectangle
MJ,

Yes, I noticed that the Type-6 reduction on abcd leads to a Type-1 reduction on defg which means g = <8>.

I did not have a name for it, and did not see it as a single pattern.

In th ...
 
Page 1 of 3 Goto page 1, 2, 3  Next
All times are GMT
Jump to:  


Powered by phpBB © 2001, 2005 phpBB Group