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 H12 Puzzle 1

 
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: Tue Dec 16, 2008 7:52 pm    Post subject: Set H12 Puzzle 1 Reply with quote

You'd think, after 52 cells being resolved by Givens and Singles, that a puzzle wouldn't be too difficult if it didn't need chains. Yeah, right!

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

Play this puzzle online at the Daily Sudoku site

Now, I bet you are looking forward to my posting from Set G again. Very Happy
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Tue Dec 16, 2008 11:08 pm    Post subject: Reply with quote

Lots of grunt work, but not real difficult. And yes, I did count 52 solved cells after basics.

Quote:
There was a worthless XY-Wing on 453 after the first of six ERs. But they exposed a puzzle-ending W-Wing on 14
Back to top
View user's profile Send private message
storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Dec 17, 2008 1:34 am    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 1456   7      356   | 2      8      9     | 13456  356    14    |
| 456    8      356   | 7      3456   1     | 3456   9      2     |
| 2      134    9     | 345    3456   45    | 13456  8      7     |
:---------------------+---------------------+---------------------:
| 8      9      1     | 6      45     45    | 2      7      3     |
| 7      6      2     | 1      9      3     | 8      4      5     |
| 3      5      4     | 8      7      2     | 9      1      6     |
:---------------------+---------------------+---------------------:
| 9      134    356   | 345    2      7     | 13456  356    8     |
| 1456   134    7     | 9      345    8     | 13456  2      14    |
| 45     2      8     | 345    1      6     | 7      35     9     |
'---------------------'---------------------'---------------------'

Quote:
1. x-wing on 1
2. ER 4... (4)r9c4 = (4)r9c1 - (4)r12c1 = (4)r3c2; r3c4 <> 4
3. (4,5) w-wing extended... (5=4)r9c1 - (4)r12c1 = (4)r3c2 - (4=5)r3c6 - (5)r4c6 = (5)r4c5 - (5=3)r8c5 - (3)r9c4 = (3)r9c8; r9c8 <> 5
4. ER 3... (3)r8c2 = (3)r8c5 - (3)r23c5 = (3)r3c4; r3c2 <> 3
5. xy-wing (3,4,5)... (5=4)r9c1 - (4=3)r8c2 - (3=5)r8c5; r8c1 and r9c4 <> 5
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