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 

Free Press April 19, 2013

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles
View previous topic :: View next topic  
Author Message
keith



Joined: 19 Sep 2005
Posts: 3178
Location: near Detroit, Michigan, USA

PostPosted: Mon Apr 22, 2013 4:19 am    Post subject: Free Press April 19, 2013 Reply with quote

Somewhat tougher?

Code:
Puzzle: FP041913
+-------+-------+-------+
| . . . | . 2 . | . . 1 |
| . . . | . . 6 | 2 . . |
| 1 7 . | . 5 . | 4 . 6 |
+-------+-------+-------+
| . . 3 | 2 . . | 1 . 7 |
| . . 9 | . . . | 6 . . |
| 2 . . | . . 8 | 9 . . |
+-------+-------+-------+
| 4 . . | . 1 . | . 3 2 |
| . . 1 | 9 . . | . . . |
| 7 . . | . 8 . | . . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

Keith
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5164
Location: Rochester, NY, USA

PostPosted: Mon Apr 22, 2013 4:02 pm    Post subject: Reply with quote

Code:

+------------+------------+-----------+
| 689 68  45 | 478 2  479 | 3 589 1   |
| 389 38  45 | 1   49 6   | 2 7   58  |
| 1   7   2  | 38  5  39  | 4 89  6   |
+------------+------------+-----------+
| 568 568 3  | 2   49 49  | 1 58  7   |
| 58  4   9  | 357 37 1   | 6 2   358 |
| 2   1   7  | 35  6  8   | 9 4   35  |
+------------+------------+-----------+
| 4   9   8  | 6   1  5   | 7 3   2   |
| 35  235 1  | 9   37 237 | 8 6   4   |
| 7   23  6  | 34  8  234 | 5 1   9   |
+------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

Didn't see a good non-chain solution.

(5=8)r4c8-r5c9=r2c9-(8=3)r2c2-(32=5)r98c2=>r4c2<>5

Code:

+-----------+----------+----------+
| 689 68 45 | 48 2  7  | 3 589 1  |
| 89  3  45 | 1  49 6  | 2 7   58 |
| 1   7  2  | 38 5  39 | 4 89  6  |
+-----------+----------+----------+
| 568 68 3  | 2  49 49 | 1 58  7  |
| 58  4  9  | 7  3  1  | 6 2   58 |
| 2   1  7  | 5  6  8  | 9 4   3  |
+-----------+----------+----------+
| 4   9  8  | 6  1  5  | 7 3   2  |
| 3   5  1  | 9  7  2  | 8 6   4  |
| 7   2  6  | 34 8  34 | 5 1   9  |
+-----------+----------+----------+

Play this puzzle online at the Daily Sudoku site

W-Wing (89), b13, SL 9 in r1=>r2c9<>8
Back to top
View user's profile Send private message
JC Van Hay



Joined: 13 Jun 2010
Posts: 372
Location: Charleroi, Belgium

PostPosted: Mon Apr 22, 2013 4:52 pm    Post subject: Reply with quote

After Singles + Locked Candidates + Subsets :
Code:
+---------------------+---------------+-----------------+
| 58(69)   568    458 | 478  2   479  | 3   (589)  1    |
| 58-3(9)  (358)  458 | 1    49  6    | 2   7      (58) |
| 1        7      2   | 38   5   39   | 4   89     6    |
+---------------------+---------------+-----------------+
| 58(6)    (568)  3   | 2    49  49   | 1   (58)   7    |
| 58       4      9   | 357  37  1    | 6   2      358  |
| 2        1      7   | 35   6   8    | 9   4      35   |
+---------------------+---------------+-----------------+
| 4        9      58  | 6    1   57   | 78  3      2    |
| 358      2358   1   | 9    37  2357 | 78  6      4    |
| 7        23     6   | 34   8   234  | 5   1      9    |
+---------------------+---------------+-----------------+
#1. Chain[7] : 9r2c1=9r1c1-[9r1c8 and 6r1c1=6r4c1-6r4c2]=RP(58)r4c28.r1c8.r2c9-(58=3)r2c2 :=> -3r2c1; 15 Singles; LC(5) :=> -5r12c1
or
Invalid Pattern (58)r1c8.r2c29.r4c28
||
3r2c2
||
6r4c2-6r4c1=(6-9)r1c1=9r2c1
||
9r1c8-9r1c1=9r2c1

#2. Chain[3] : XYWing(4-89)r1c4.r2c15 :=> -8r1c12
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5164
Location: Rochester, NY, USA

PostPosted: Mon Apr 22, 2013 7:02 pm    Post subject: Reply with quote

I guess I have to withdraw my solution. Looking at JC's grid, it is apparent I erred in basics by solving r7c3 for 8. Embarassed Embarassed
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other 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