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 

Nov 28 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: 424
Location: Birmingham UK

PostPosted: Mon Nov 28, 2016 10:57 am    Post subject: Nov 28 VH Reply with quote

Code:

+--------------+------------+-------------+
| 1    57  3   | 25 8   4   | 26  9   267 |
| 9    578 458 | 6  1   25  | 248 478 3   |
| 28   6   248 | 3  7   9   | 5   48  1   |
+--------------+------------+-------------+
| 3578 2   58  | 4  39  37  | 1   678 679 |
| 47   9   1   | 8  5   6   | 3   2   47  |
| 3478 38  6   | 1  239 237 | 89  5   479 |
+--------------+------------+-------------+
| 6    1   7   | 25 4   8   | 29  3   259 |
| 235  35  9   | 7  236 1   | 246 46  8   |
| 238  4   28  | 9  236 235 | 7   1   256 |
+--------------+------------+-------------+

Play this puzzle online at the Daily Sudoku site

Two stepper (select white space to view):
Quote:
X-Wing on 8 c27 followed
immediately by a 45-7 XY-Wing pivot r2c3 removing the 7
from r1c9 stte
I found the first wing very hard to see for some reason...
Hugh
Back to top
View user's profile Send private message
Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Mon Nov 28, 2016 2:54 pm    Post subject: Nov 28 VH Reply with quote

Lots of x-wings; then

457 xy-wing at R2C3, R1C9 cannot be 7

Early Earl
Back to top
View user's profile Send private message Send e-mail
JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Mon Nov 28, 2016 5:59 pm    Post subject: Reply with quote

XWing(2C49)-(2=9)r7c7; stte
Back to top
View user's profile Send private message
hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Mon Nov 28, 2016 10:57 pm    Post subject: Reply with quote

JC Van Hay wrote:
XWing(2C49)-(2=9)r7c7; stte

I'm confused, did I miss an elimination of 2 in r9c9?
Back to top
View user's profile Send private message
JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Tue Nov 29, 2016 7:47 am    Post subject: Reply with quote

hughwill wrote:
JC Van Hay wrote:
XWing(2C49)-(2=9)r7c7; stte

I'm confused, did I miss an elimination of 2 in r9c9?

No, the solutions of the XWing{2r17c4, 2r179c9} only exclude 2r7c7.
Back to top
View user's profile Send private message
hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Tue Nov 29, 2016 9:42 am    Post subject: Reply with quote

JC Van Hay wrote:
hughwill wrote:
JC Van Hay wrote:
XWing(2C49)-(2=9)r7c7; stte

I'm confused, did I miss an elimination of 2 in r9c9?

No, the solutions of the XWing{2r17c4, 2r179c9} only exclude 2r7c7.


So it's a sort of extended X wing rather than the simple 2 rows or two columns
type?
Hugh
Back to top
View user's profile Send private message
JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Tue Nov 29, 2016 11:20 am    Post subject: Reply with quote

hughwill wrote:
type?

Type : Finned X-Wing

Note :
If the solutions of a set of all the candidates of a digit in N units exclude a set of candidates, than that set is simply called an N-Fish. Or, if
N=1 : a "Cyclopsfish" [Types : Pointing/Claiming or Locked Candidates type 1/2 or Box-line/Line-box interaction],
N=2 : an X-Wing [Types : Pointing/Claiming, Basic/Finned/Sashimi X-Wing, [Grouped] Skyscraper, [Grouped] 2-Stringed Kite, Empty Rectangle, Turbot Fish],
N=3 : a Swordfish [Types : Basic Swordfish, Unfinned/Finned/Sashimi Basic/Franken/Mutant Swordfish, Kraken X-Wing]
...
Due to the numerous types of an N-Fish, why should we bother about them !?
Back to top
View user's profile Send private message
keith



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

PostPosted: Sat Dec 03, 2016 6:22 pm    Post subject: Reply with quote

JC Van Hay wrote:

Due to the numerous types of an N-Fish, why should we bother about them !?

I sort of agree. All I look for these days are (grouped) strong links and then figure out if they make kites or skyscrapers or whatever.

I can't remember the last time I ever said: Aha! A swordfish.

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 -> 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