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Aug 20 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 378
Location: Rimini, Italy

PostPosted: Sun Aug 19, 2018 10:11 pm    Post subject: Aug 20 VH Reply with quote

Hi everyone,

Code:

+-----------+-------+-------------+
| 8  4   3  | 9 7 1 | 5    2   6  |
| 1  5   2  | 8 3 6 | 9    4   7  |
| 67 67  9  | 4 5 2 | 13   13  8  |
+-----------+-------+-------------+
| 9  36  5  | 2 8 7 | 1346 136 34 |
| 2  367 68 | 5 1 4 | 36   78  9  |
| 47 1   48 | 3 6 9 | 2    78  5  |
+-----------+-------+-------------+
| 3  2   7  | 6 4 5 | 8    9   1  |
| 46 8   1  | 7 9 3 | 46   5   2  |
| 5  9   46 | 1 2 8 | 7    36  34 |
+-----------+-------+-------------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 3,4,6 in r4c9,r58c7 and -4 in r4c7,r9c9
or
Skyscraper with number 6 in r59c3,r49c8 and -6 in r4c2,r5c7


Ciao Gianni
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jayagee



Joined: 26 Feb 2006
Posts: 13
Location: sunny north dakota

PostPosted: Tue Aug 21, 2018 12:37 am    Post subject: Reply with quote

OK. Here's what I think. There is an xy wing using cells r8c8,r5c8 and r9c9 with r8c8 being the xy. this eliminates 3 from r4c9 and that does it.
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