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Jul 05 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 868
Location: Rimini, Italy

PostPosted: Tue Jul 04, 2017 10:38 pm    Post subject: Jul 05 VH Reply with quote

Hi everyone,

Code:

+------------+-------------+----------+
| 9  25  4   | 6   235 135 | 7 13 8   |
| 27 8   57  | 4   235 135 | 6 9  13  |
| 3  6   1   | 9   7   8   | 4 5  2   |
+------------+-------------+----------+
| 6  37  9   | 37  1   2   | 5 8  4   |
| 8  4   37  | 357 35  9   | 2 16 16  |
| 5  1   2   | 8   6   4   | 3 7  9   |
+------------+-------------+----------+
| 1  9   357 | 2   4   357 | 8 36 367 |
| 4  357 8   | 35  9   6   | 1 2  37  |
| 27 237 6   | 1   8   37  | 9 4  5   |
+------------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
Skyscraper with number 3 in r4c4,r4c2,r9c2,r9c6 and -3 in r8c4.


Ciao Gianni
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy

PostPosted: Tue Jul 04, 2017 10:59 pm    Post subject: Reply with quote

Another solution
Forcing chain [(3-5)R7C3=(5)R7C6-(5)R8C4 and (3)R7C3-(3)R7C89=(3)R8C9-(3)R8C4]=>contradiction R8C4=Ø=>-3R7C3=>Solution stte
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Marty R.



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

PostPosted: Wed Jul 05, 2017 5:29 am    Post subject: Reply with quote

XYZ-Wing (237), hinged r9c2=> -7r8c2.
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