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 

Apr 7 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: 1110
Location: Dar es Salaam Tanzania

PostPosted: Mon Apr 06, 2015 10:38 pm    Post subject: Apr 7 VH Reply with quote

Code:

+-----------+-----------+---------+
| 7  6   8  | 5  19 49  | 2  14 3 |
| 9  1   5  | 48 3  2   | 7  48 6 |
| 3  4   2  | 78 17 6   | 9  18 5 |
+-----------+-----------+---------+
| 5  7   4  | 6  2  1   | 3  9  8 |
| 1  2   9  | 3  8  7   | 56 56 4 |
| 68 38  36 | 9  4  5   | 1  2  7 |
+-----------+-----------+---------+
| 2  38  36 | 1  5  348 | 46 7  9 |
| 8-4 589 7  | 2  6  489 | 45 3  1 |
| 46 359 1  | 47 79 349 | 8  56 2 |
+-----------+-----------+---------+
XY-Wing 56-4 pivoted in r9c8; r8c1<>4; stte
Back to top
View user's profile Send private message AIM Address
kuskey



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

PostPosted: Tue Apr 07, 2015 6:50 am    Post subject: Apr 7 VH Reply with quote

Clement, after looking at your after-basics code I see much more basic work that can be done. After a fashion, you end up with a BUG+1 in box 8 which is another 1-stepper solution. Many hiddens in this puzzle. I concur with your XY-wing. I solved it 3 times and got 3 identical results.
Back to top
View user's profile Send private message
Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Tue Apr 07, 2015 7:03 am    Post subject: Re: Apr 7 VH Reply with quote

kuskey wrote:
Clement, after looking at your after-basics code I see much more basic work that can be done. After a fashion, you end up with a BUG+1 in box 8 which is another 1-stepper solution. Many hiddens in this puzzle. I concur with your XY-wing.
Thanks kuskey for pointing that out. Uncompleted basics can sometimes(it has happened) result to an invalid path leading to the solution. Thanks.
Back to top
View user's profile Send private message AIM Address
dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Wed Apr 08, 2015 2:03 am    Post subject: Reply with quote

I wouldn't really call that much more basic work. To me it looks like he only missed one of the 2 possible naked pairs in column 2 followed by the lone 3 in row 9 (I think).
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