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 

Set NNP Puzzle 90

 
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: Sun Jan 25, 2009 6:12 pm    Post subject: Set NNP Puzzle 90 Reply with quote

Code:
 +-----------------------+
 | . . . | 9 7 . | . 8 3 |
 | . . . | . 4 5 | 9 . . |
 | . . 7 | 2 3 . | 4 5 . |
 |-------+-------+-------|
 | 1 . 9 | 3 . . | . . . |
 | 2 6 3 | . 9 . | . 1 . |
 | . 4 . | . . 6 | . . . |
 |-------+-------+-------|
 | . 9 2 | . . . | . . . |
 | 5 . 6 | . 2 . | . 9 . |
 | 8 . . | . . . | . . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings

Can be solved using steps from ...

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2

Basics+: Naked Quad, Hidden Pair/Triple/Quad

VH: BUG+1, UR Type 1, X-Wing, XY-Wing, XYZ-Wing

VH+: 2-String Kite, Empty Rectangle, Remote Pair, Skyscraper, Colors, UR Type 2

Advanced: finned/Sashimi X-Wing, Multiple Colors, Swordfish, M-Wing, W-Wing, XY-Chain

Extreme: Jellyfish, (but mostly) Chain
Back to top
View user's profile Send private message
storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sun Jan 25, 2009 9:48 pm    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 6      5      4     | 9      7      1     | 2      8      3     |
| 3      2      8     | 6      4      5     | 9      7      1     |
| 9      1      7     | 2      3      8     | 4      5      6     |
:---------------------+---------------------+---------------------:
| 1      8      9     | 3      5      2     | 67     46     47    |
| 2      6      3     | 47     9      47    | 58     1      58    |
| 7      4      5     | 18     18     6     | 3      2      9     |
:---------------------+---------------------+---------------------:
| 4      9      2     | 1578   18     37    | 15678  36     578   |
| 5      37     6     | 1478   2      347   | 178    9      478   |
| 8      37     1     | 457    6      9     | 57     34     2     |
'---------------------'---------------------'---------------------'

UR {1,8} removes 1 and 8 from r7c4
then the DP {1,8} in r68c4, r67c5, r78c7... forces 8 to exist in r5c7, or the DP exists.
then two xy-wings
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Mon Jan 26, 2009 12:48 am    Post subject: Reply with quote

Still another long, great puzzle. I used a total of six steps as follows:
Quote:
Type 1 UR<18>, Type 4 UR<58>, Type 6 UR<57> with two strong links, a xy-wing<367> with a pseudo-cell, a xy-wing<347> with a pseudo-cell and finally a BUG+1.

A wonderful set of puzzles you submitted today Danny!

Ted Very Happy
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Mon Jan 26, 2009 12:58 am    Post subject: Reply with quote

tlanglet wrote:
A wonderful set of puzzles you submitted today Danny!

Thanks for the compliment. Yes, it does seem that everyone was having fun with the puzzles today. Im glad. Very Happy
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