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 

Feb 18 VH

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



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Thu Feb 18, 2016 2:34 pm    Post subject: Feb 18 VH Reply with quote

Code:

+--------+--------------+---------------+
| 6 9 5  | 12   7   123 | 4    23  8    |
| 2 3 7  | 8    4   5   | 9    1   6    |
| 4 8 1  | 269  236 239 | 7    5   23   |
+--------+--------------+---------------+
| 1 5 4  | 3    28  7   | 28   6   9    |
| 3 6 28 | 1245 9   124 | 1258 247 1257 |
| 9 7 28 | 1245 258 6   | 3    24  125  |
+--------+--------------+---------------+
| 7 2 6  | 49   35  49  | 15   8   135  |
| 5 1 3  | 7    26  8   | 26   9   4    |
| 8 4 9  | 256  1   23  | 256  237 2357 |
+--------+--------------+---------------+

Play this puzzle online at the Daily Sudoku site

I got to this so late I thought that someone would have shared a solution by
now! A solution:
Quote:
X-Wing on 2 r48 followed by 26-3 XY-Wing pivot r8c5
Hugh
Back to top
View user's profile Send private message
George Woods



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

PostPosted: Thu Feb 18, 2016 4:03 pm    Post subject: a 1 stepper? Reply with quote

I considered r6c5 which if 8 sets r8c5 to 6 very quickly BUT if r6c5 is not 8 the XY wing 325 pivot r7c5 again makes r8c5 6 stte
Back to top
View user's profile Send private message
hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Thu Feb 18, 2016 6:17 pm    Post subject: Re: a 1 stepper? Reply with quote

George Woods wrote:
I considered r6c5 which if 8 sets r8c5 to 6 very quickly BUT if r6c5 is not 8 the XY wing 325 pivot r7c5 again makes r8c5 6 stte
Neat. What would you call such a solution? Provisonal XY-wing Elimination?
Hugh
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Fri Feb 19, 2016 12:57 am    Post subject: Re: a 1 stepper? Reply with quote

hughwill wrote:
George Woods wrote:
I considered r6c5 which if 8 sets r8c5 to 6 very quickly BUT if r6c5 is not 8 the XY wing 325 pivot r7c5 again makes r8c5 6 stte
Neat. What would you call such a solution? Provisonal XY-wing Elimination?
Hugh


I would call it a Forcing Chain or something akin.

R6c5<8> 6r8c5
R8c5=8=> 6r8c5.


Quote:
Dongrave wrote in another thread

Darn x wings! There ought be a law against them.


I heartily agree.
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