dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Sep 13 VH

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles
View previous topic :: View next topic  
Author Message
RobertRattley



Joined: 24 Jun 2007
Posts: 118
Location: Australia

PostPosted: Wed Sep 12, 2012 6:06 pm    Post subject: Sep 13 VH Reply with quote

I don't want to spoil the fun with TOO early a post, but just hint:

I had to work through two Hard steps before finding an xyz wing, and still that wasn't enough! An xy wing was then needed.

Perhaps somebody will find an easier path.
Back to top
View user's profile Send private message Send e-mail
Mindwarp



Joined: 13 Sep 2007
Posts: 25
Location: St. Ives, England

PostPosted: Thu Sep 13, 2012 1:08 am    Post subject: Sep 13 VH Reply with quote

I didn't find it that hard, though I maybe applying techniques without knowing their names. Identifying the number in R2C5 was the key to solving it for me. It took me 9 minutes and 8 seconds, which is around normal time for me on a VH using sweep.
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Thu Sep 13, 2012 1:26 am    Post subject: Reply with quote

I needed two steps. But the XYZ-Wing was there after basics and that opened up the puzzle-ending XY-Wing. These are usually one-steppers for me.
Back to top
View user's profile Send private message
hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Thu Sep 13, 2012 9:28 am    Post subject: Post subject: Sep 13 VH Reply with quote

Code:

+--------------+-------------+---------+
| 3  1247 247  | 15 145  9   | 27 6 8  |
| 8  5    46   | 2  46   7   | 9  3 1  |
| 67 1267 9    | 3  16   8   | 27 5 4  |
+--------------+-------------+---------+
| 67 9    5    | 17 3    16  | 4  8 2  |
| 2  3    1    | 89 89   4   | 5  7 6  |
| 4  67   8    | 57 2    56  | 3  1 9  |
+--------------+-------------+---------+
| 5  8    2367 | 4  17   123 | 16 9 37 |
| 1  267  2367 | 89 5789 235 | 68 4 37 |
| 9  47   347  | 6  178  13  | 18 2 5  |
+--------------+-------------+---------+

Play this puzzle online at the Daily Sudoku site

The XYZ wing pivoted on r9c5 sets r9c6 to 3- and so does the XY
wing pivoted on r7c5. I couldn't find a single step, but it was not too difficult.
I didn't see the essential role of r2c5 mentioned by Mindwarp-
any further info?
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group