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 July 13, 2012

 
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: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Jul 13, 2012 7:15 pm    Post subject: Free Press July 13, 2012 Reply with quote
Not yet started.
Code:
Puzzle: FP071312
+-------+-------+-------+
| 3 . . | . 1 5 | . . 7 |
| . . . | . . 9 | 6 2 . |
| . . 7 | . . . | . . . |
+-------+-------+-------+
| . . . | 5 . . | . 4 . |
| 5 7 . | 8 . 6 | . . 2 |
| . 8 . | . . 2 | . 1 . |
+-------+-------+-------+
| . . . | . . . | 5 . . |
| . 4 3 | 9 . . | . . . |
| 9 . . | 1 6 . | . . 4 |
+-------+-------+-------+

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: 5770
Location: Rochester, NY, USA
PostPosted: Fri Jul 13, 2012 10:23 pm    Post subject: Reply with quote
Code:

+--------------+------------+------------+
| 3    269 268 | 26  1   5  | 4 89   7   |
| 14   15  45  | 7   38  9  | 6 2    38  |
| 68   269 7   | 246 238 34 | 1 5    389 |
+--------------+------------+------------+
| 2    3   9   | 5   7   1  | 8 4    6   |
| 5    7   1   | 8   4   6  | 9 3    2   |
| 46   8   46  | 3   9   2  | 7 1    5   |
+--------------+------------+------------+
| 1678 16  68  | 24  23  34 | 5 6789 189 |
| 1678 4   3   | 9   5   78 | 2 678  18  |
| 9    25  25  | 1   6   78 | 3 78   4   |
+--------------+------------+------------+

Play this puzzle online at the Daily Sudoku site

W-Wing (68), boxes 17, SL 6 in c2; r1c3<>8
Back to top
View user's profile Send private message
keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Jul 14, 2012 1:39 am    Post subject: Reply with quote
UR 78: R8C8=6.
DP 78 in B789: R1C8=8.

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



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jul 14, 2012 3:53 am    Post subject: Reply with quote
After the Type1:

Code:

+--------------+------------+-----------+
| 3    269 268 | 26  1   5  | 4 89  7   |
| 14   15  45  | 7   38  9  | 6 2   38  |
| 68   269 7   | 246 238 34 | 1 5   389 |
+--------------+------------+-----------+
| 2    3   9   | 5   7   1  | 8 4   6   |
| 5    7   1   | 8   4   6  | 9 3   2   |
| 46   8   46  | 3   9   2  | 7 1   5   |
+--------------+------------+-----------+
| 1678 16  68  | 24  23  34 | 5 789 189 |
| 178  4   3   | 9   5   78 | 2 6   18  |
| 9    25  25  | 1   6   78 | 3 78  4   |
+--------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

How do you arrive at r1c8=8?
Back to top
View user's profile Send private message
keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Jul 14, 2012 4:02 am    Post subject: Reply with quote
Marty R. wrote:
After the Type1:

Code:

+--------------+------------+-----------+
| 3    269 268 | 26  1   5  | 4 89  7   |
| 14   15  45  | 7   38  9  | 6 2   38  |
| 68   269 7   | 246 238 34 | 1 5   389 |
+--------------+------------+-----------+
| 2    3   9   | 5   7   1  | 8 4   6   |
| 5    7   1   | 8   4   6  | 9 3   2   |
| 46   8   46  | 3   9   2  | 7 1   5   |
+--------------+------------+-----------+
|*1678 16  68  | 24  23  34 |5 *789 189 |
|*178  4   3   | 9   5  *78 |2  6   18  |
| 9    25  25  | 1   6  *78 |3 *78  4   |
+--------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

How do you arrive at r1c8=8?

Potential DP 78 is labeled *.
Either:
R78C1=16; 16 pair in B7; R7C3=8; R1C8=8.
or:
R7C8=9; 18 pair in C9; R1C8=8.

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



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jul 14, 2012 5:07 am    Post subject: Reply with quote
Thanks. I was just attacking it in a different way, trying to use pincers. The pincers in r7c3 and r1c8 take out the 8 from r1c3 which makes r1c8=8. I should have followed up a little more closely.
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
PostPosted: Sat Jul 14, 2012 6:10 pm    Post subject: Free Press July 13, 2012 Reply with quote
XY-Chain
If r7c2=1, then, r2c2=5 ->r2c3=4 ->r6c3=6; r7c3<>6 solves it.
Back to top
View user's profile Send private message AIM Address
keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Jul 14, 2012 7:54 pm    Post subject: Reply with quote
After basics:
Code:
+----------------+----------------+----------------+
| 3    269  268  | 26   1    5    | 4    89   7    |
| 14   15   45   | 7    38   9    | 6    2    38   |
| 68   269  7    | 246  238  34   | 1    5    389  |
+----------------+----------------+----------------+
| 2    3    9    | 5    7    1    | 8    4    6    |
| 5    7    1    | 8    4    6    | 9    3    2    |
| 46   8    46   | 3    9    2    | 7    1    5    |
+----------------+----------------+----------------+
| 1678 16   68   | 24   23   34   | 5    6789 189  |
| 1678 4    3    | 9    5    78   | 2    678  18   |
| 9    25   25   | 1    6    78   | 3    78   4    |
+----------------+----------------+----------------+

To avoid the DP, either
R78C1 is 16, forming a 16 pair in B7; R7C3 is 8. Or
R7C8 is 68, forming an XY-wing 6-89.

Either way, R1C3 <>8, solving the puzzle.

Keith
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