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Aug 9 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Tue Aug 08, 2017 10:23 pm    Post subject: Aug 9 VH Reply with quote
Hi everyone,

Code:

+---------+----------+-----------+
| 9  5 1  | 2   3 68 | 68 7  4   |
| 7  6 8  | 1   4 5  | 9  3  2   |
| 2  4 3  | 68  7 9  | 1  5  68  |
+---------+----------+-----------+
| 6  8 49 | 49  5 1  | 3  2  7   |
| 3  7 5  | 469 2 46 | 48 89 1   |
| 1  2 49 | 7   8 3  | 46 69 5   |
+---------+----------+-----------+
| 48 3 7  | 5   6 48 | 2  1  9   |
| 5  9 6  | 38  1 2  | 7  4  38  |
| 48 1 2  | 348 9 7  | 5  68 368 |
+---------+----------+-----------+

Play this puzzle online at the Daily Sudoku site

some option

Quote:

W-Wing 4,8 in r5c7, r7c6 connected by number 8 in r1c67 and -4 in r5c6
or
W-Wing 4,6 in r5c6, r6c7 connected by number 6 in r1c67 and -4 in r5c7
or
XY-Wing 4,6,8 in r1c7, r5c7, r5c6 and -6 in r1c6
or
XY-Wing 4,6,8 in r1c6, r5c6, r5c7 and -8 in r1c7


Ciao Gianni
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hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
PostPosted: Wed Aug 09, 2017 10:27 am    Post subject: Reply with quote
Or the bleeding obvious 46-8 or48-6 XY wings in c67 r15.
Not a classic, I think.
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Wed Aug 09, 2017 12:56 pm    Post subject: Reply with quote
Hi everyone

[(6-4)R6C7=(4)R5C7-(4)R5C6 and (6)R6C7-(6)R1C7=(6)R1C6-(6)R5C6]=>contradiction R5C6=Ø=>-6R6C7=>stte.

Ciao a Tutti
Paolo
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Aug 09, 2017 5:15 pm    Post subject: Reply with quote
Quote:
Or the bleeding obvious 46-8 or48-6 XY wings in c67 r15.


He had them.
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Wed Aug 09, 2017 6:32 pm    Post subject: Reply with quote
Hi everyone,

I find very interesting also the UR 3.8 in r89c49,
which leads to BUG+1 in r5c4.
Beautiful to see (for me).

Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Aug 09, 2017 9:21 pm    Post subject: Reply with quote
Quote:
I find very interesting also the UR 3.8 in r89c49,


Gianni,

What did you do with it?
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Wed Aug 09, 2017 10:00 pm    Post subject: Reply with quote
Hi Marty,

I get the same result as X-Wing with number 8 in r38c49; -8 in r9c49.
In row 9 the number 3 can only be in r9c4 or r9c9; However, there can not be number 8 in the other cell.

Ciao Gianni
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