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 

Puzzle NR_051

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj
View previous topic :: View next topic  
Author Message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Mon Jun 29, 2009 2:49 pm    Post subject: Puzzle NR_051 Reply with quote
Code:
 +-----------------------+
 | . 9 5 | . . 4 | 2 8 6 |
 | 6 1 . | . 2 . | . . 9 |
 | 2 . . | . . 8 | . 3 1 |
 |-------+-------+-------|
 | . . . | 6 . . | . . . |
 | . 3 . | . . . | . . . |
 | 9 . 2 | . . 5 | . 6 . |
 |-------+-------+-------|
 | 4 . . | . . . | . 2 . |
 | 1 . 3 | . . 2 | 6 9 . |
 | 8 2 9 | . . . | . . 4 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Mon Jun 29, 2009 5:53 pm    Post subject: Reply with quote
Four steps:
Quote:
xy-wing 587,
xy-wing 458,
skyscraper 1
xyz-wing 358

Ted
Back to top
View user's profile Send private message
storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Tue Jun 30, 2009 6:05 am    Post subject: Reply with quote
Code:
.---------------------.---------------------.---------------------.
| 3      9      5     | 17     17     4     | 2      8      6     |
| 6      1      8     | 5      2      3     | 47     47     9     |
| 2      7      4     | 9      6      8     | 5      3      1     |
:---------------------+---------------------+---------------------:
| 57     48     1     | 6      3489   79    | 3489   45     2     |
| 57     3      6     | 2      1489   179   | 1489   145    58    |
| 9      48     2     | 1348   1348   5     | 13478  6      378   |
:---------------------+---------------------+---------------------:
| 4      6      7     | 138    13589  19    | 138    2      358   |
| 1      5      3     | 478    478    2     | 6      9      78    |
| 8      2      9     | 137    1357   6     | 137    157    4     |
'---------------------'---------------------'---------------------'

1... (7=8)r8c9 - (8=5)r5c9 - (5)r7c9 = (5)r9c8; r9c8 <> 7
2... sky 1
3... xyz-wing {3,5,8}
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Jul 02, 2009 3:34 pm    Post subject: Reply with quote
After two ERs (3, 1) and an XYZ-Wing (358), the UR on 48 was the key. Either way of breaking up the DP (1 or 3 in r6c4 or r6c5) forced an 8 in r7c7, then I twice used the same UR as a Hidden.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj 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