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 12 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: Sat Dec 11, 2010 10:11 pm    Post subject: Dec 12 VH Reply with quote

XY-Wing 46 69 49 pivoted in r1c9 removing 4 in r3c1 solves it.
Back to top
View user's profile Send private message AIM Address
prakash



Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA

PostPosted: Sat Dec 11, 2010 10:58 pm    Post subject: Reply with quote

For some reason, even after two tries, I finished it without the need for any advanced techniques. I am baffled. Could someone please post th grid after the basics?
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Sun Dec 12, 2010 4:26 am    Post subject: Reply with quote

I saw three moves.

1) Type 3 UR (59) with 46 pseudo cell; r6c6<>4

2) W-Wing (49); r1c9<>9

3) XY-Wing (694); r3c1<>4
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Sun Dec 12, 2010 5:44 am    Post subject: Reply with quote

My post-basics grid:

Code:

+-------------+---------------+------------+
| 5   7   46  | 2    49  1    | 8   3  69  |
| 1   9   3   | 8    5   46   | 246 7  26  |
| 46  8   2   | 3469 349 7    | 1   49 5   |
+-------------+---------------+------------+
| 89  34  45  | 49   6   2    | 7   58 1   |
| 89  246 456 | 1    7   3    | 246 58 269 |
| 7   26  1   | 5    8   49   | 26  49 3   |
+-------------+---------------+------------+
| 2   5   9   | 7    1   8    | 3   6  4   |
| 346 46  7   | 3469 2   4569 | 59  1  8   |
| 346 1   8   | 3469 349 4569 | 59  2  7   |
+-------------+---------------+------------+

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



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

PostPosted: Sun Dec 12, 2010 6:00 am    Post subject: Dec 12 VH Reply with quote

In addition to those already mentioned, I found the following:

469 xy-wing: r2c89 <>6
469 xy-wing: r1c3 <>6
46 w-wing in c16: r3c4 <>6
46 w-wing in c36: r1c5 <>4
Back to top
View user's profile Send private message
peterj



Joined: 26 Mar 2010
Posts: 974
Location: London, UK

PostPosted: Sun Dec 12, 2010 10:40 am    Post subject: Reply with quote

(From Marty's grid) there are also a bunch of turbot/fish moves on 4 that finish it e.g.
Code:
kite(4) r2, c8 ; r6c6<>4
skyscraper(4) r2, r6 ; r3c8<>4, r5c7<>4
Back to top
View user's profile Send private message
prakash



Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA

PostPosted: Sun Dec 12, 2010 3:38 pm    Post subject: Reply with quote

A skyscraper in 4s r3c8 <> 4 does the trick as well. I realized I was doing this elimination subconsciously without recognizing it as an advanced move.
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