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 

Dec 2 VH

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles
View previous topic :: View next topic  
Author Message
Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Thu Dec 01, 2011 10:40 pm    Post subject: Dec 2 VH Reply with quote

Finned x-wing 8 in c35; r6c4<>8 solves it.
Also the w-wing 38 with strong link 8 in col 4; r5c1<>3.
Back to top
View user's profile Send private message AIM Address
rgmerk76



Joined: 02 Dec 2011
Posts: 1

PostPosted: Fri Dec 02, 2011 12:05 am    Post subject: Reply with quote

Fairly straightforward BUG+1 solution for me after basics - or did I stuff up?
Back to top
View user's profile Send private message
kuskey



Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH

PostPosted: Fri Dec 02, 2011 5:57 am    Post subject: Dec 2 VH Reply with quote

Another 1-stepper is the 378 xy-wing with pivot at r6c4 setting r1c3<>7.
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Wed Dec 21, 2011 6:05 pm    Post subject: Reply with quote

After basics (this is for the benefit of a new member if he or she is interested).

Code:

+---------+----------+-------+
| 2  4 37 | 37 1   5 | 6 8 9 |
| 1  6 78 | 9  78  4 | 5 2 3 |
| 38 9 5  | 38 6   2 | 4 1 7 |
+---------+----------+-------+
| 7  1 9  | 2  4   6 | 8 3 5 |
| 38 2 4  | 5  38  1 | 9 7 6 |
| 6  5 38 | 78 378 9 | 1 4 2 |
+---------+----------+-------+
| 9  8 6  | 1  2   7 | 3 5 4 |
| 4  3 2  | 6  5   8 | 7 9 1 |
| 5  7 1  | 4  9   3 | 2 6 8 |
+---------+----------+-------+

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



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Wed Dec 21, 2011 6:47 pm    Post subject: Reply with quote

After basics:
Code:
+-------------+-------------+-------------+
| 2   4   37  | 37  1   5   | 6   8   9   |
| 1   6   78* | 9   78* 4   | 5   2   3   |
| 38  9   5   | 38  6   2   | 4   1   7   |
+-------------+-------------+-------------+
| 7   1   9   | 2   4   6   | 8   3   5   |
|-38  2   4   | 5   38# 1   | 9   7   6   |
| 6   5   38# | 78 -378 9   | 1   4   2   |
+-------------+-------------+-------------+
| 9   8   6   | 1   2   7   | 3   5   4   |
| 4   3   2   | 6   5   8   | 7   9   1   |
| 5   7   1   | 4   9   3   | 2   6   8   |
+-------------+-------------+-------------+


Analysis courtesy of Sudoku Susser:

* Squares R3C4 and R5C5 form a remote naked pair. <38> can be removed from any square that a buddy to both of them.

R2C5 - removing <8> from <78> leaving <7>.
R6C4 - removing <8> from <78> leaving <7>.

OR:

Squares R6C3 (XY), R1C3 (XZ) and R6C4 (YZ) form an XY-Wing pattern on <7>. All squares that are buddies of both the XZ and YZ squares cannot be <7>.

R1C4 - can remove <7> from <37> leaving <3>.

OR:

Squares R6C4 (XY), R1C4 (XZ) and R6C3 (YZ) form an XY-Wing pattern on <3>. All squares that are buddies of both the XZ and YZ squares cannot be <3>.

R1C3 - can remove <3> from <37> leaving <7>.

OR:

A BUG in the puzzle forces R6C5 to be <8>.

There is also a W-wing that I have marked above. No doubt there are other moves of similar difficulty.

Keith
Back to top
View user's profile Send private message
George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Thu Dec 22, 2011 10:12 pm    Post subject: the er solution Reply with quote

The strong link in 8 in col 4 denies an 8 at r3c1 Nowhere for an 8 in Box 4)
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Thu Dec 22, 2011 10:36 pm    Post subject: Re: the er solution Reply with quote

George Woods wrote:
The strong link in 8 in col 4 denies an 8 at r3c1 Nowhere for an 8 in Box 4)

George, I'm sorry, I just don't understand your statements. I do see where that 8 is removed by the Skyscraper in r25.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku 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