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Jul 11 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Mon Jul 10, 2017 10:36 pm    Post subject: Jul 11 VH Reply with quote
Hi everyone,

Code:

+-----------+-------------+----------+
| 8   459 7 | 1   59  49  | 3 6   2  |
| 35  1   2 | 6   35  8   | 9 47  47 |
| 349 349 6 | 2   7   349 | 1 5   8  |
+-----------+-------------+----------+
| 1   34  9 | 7   6   5   | 8 2   34 |
| 2   6   8 | 39  4   39  | 5 17  17 |
| 347 347 5 | 8   1   2   | 6 34  9  |
+-----------+-------------+----------+
| 59  8   4 | 359 2   1   | 7 39  6  |
| 579 579 1 | 4   389 6   | 2 389 35 |
| 6   2   3 | 59  89  7   | 4 189 15 |
+-----------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

I chose this option

Quote:
XY-Wing 3,5,9 in r7c18, r8c9 and -5 in r8c12.


Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Jul 11, 2017 5:07 am    Post subject: Reply with quote
Code:

+-----------+-------------+----------+
| 8   459 7 | 1   59  49  | 3 6   2  |
| 35  1   2 | 6   35  8   | 9 47  47 |
| 349 349 6 | 2   7   349 | 1 5   8  |
+-----------+-------------+----------+
| 1   34  9 | 7   6   5   | 8 2   34 |
| 2   6   8 | 39  4   39  | 5 17  17 |
| 347 347 5 | 8   1   2   | 6 34  9  |
+-----------+-------------+----------+
| 59  8   4 | 359 2   1   | 7 39  6  |
| 579 579 1 | 4   389 6   | 2 389 35 |
| 6   2   3 | 59  89  7   | 4 189 15 |
+-----------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

I missed Gianni's wing. I used the XY-Wing 59-3 pivoted in r7c1 and transported the 3 from r7c8 to r8c5=> -3r2c5
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Tue Jul 11, 2017 6:29 am    Post subject: Reply with quote
Hi everyone


[(5)R1C5-(5)R1C2=(5)R8C2-(5)R8C9=(5)R9C9-(5)R9C4 and (5-9)R1C5=(9)R13C6-(9)R5C6=(9)R5C4-(9)R9C4]=> contradiction R9C4=Ø=>-5R1C5=>solution stte.


Ciao a tutti
Paolo

Last edited by Ajò Dimonios on Wed Jul 12, 2017 8:30 am; edited 1 time in total
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Wed Jul 12, 2017 12:48 am    Post subject: Reply with quote
Marty R. wrote:
I missed Gianni's wing. I used the XY-Wing 59-3 pivoted in r7c1 and transported the 3 from r7c8 to r8c5=> -3r2c5

Now wait a minute Marty! You know that transports are not necessary to solve the VH's on this site! Laughing
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Wed Jul 12, 2017 9:14 am    Post subject: Reply with quote
Hi everyone

Code:

+-----------+-------------+----------+
| 8   459 7 | 1   59  49  | 3 6   2  |
| 35  1   2 | 6   35  8   | 9 47  47 |
| 349 349 6 | 2   7   349 | 1 5   8  |
+-----------+-------------+----------+
| 1   34  9 | 7   6   5   | 8 2   34 |
| 2   6   8 | 39  4   39  | 5 17  17 |
| 347 347 5 | 8   1   2   | 6 34  9  |
+-----------+-------------+----------+
| 59  8   4 | 359 2   1   | 7 39  6  |
| 579 579 1 | 4   389 6   | 2 389 35 |
| 6   2   3 | 59  89  7   | 4 189 15 |
+-----------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

Another solution with one step.

[(9)R7C1-(9=3)R7C9 and (9-5)=(5)R8C12-(5=3)]=>contradiction two singles 3 in box 9=>-9R7C1=>solution stte.

Ciao a tutti
Paolo
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Wed Jul 12, 2017 9:53 am    Post subject: Reply with quote
Hi everyone

Another solution with one step.

[(3)R8C9-(3=9)R7C8 and (3-5)R8C9=(5)R8C12-(5=9)R7C1]=>contradiction two singles 9 in line 7=>-3R8C9=>solution stte.

Ciao a tutti
Paolo
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