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Dec 10 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 480
Location: Rimini, Italy

PostPosted: Tue Dec 10, 2019 10:39 am    Post subject: Dec 10 VH Reply with quote

Hi everyone,

Code:

+-------------+-----------+----------------+
| 2    37  48 | 6  9   5  | 347 1    78    |
| 16   5   16 | 8  47  3  | 2   47   9     |
| 39   379 48 | 24 247 1  | 6   3457 578   |
+-------------+-----------+----------------+
| 8    1   7  | 3  26  9  | 45  2456 256   |
| 39   39  26 | 5  8   4  | 17  267  1267  |
| 46   24  5  | 12 126 7  | 8   9    3     |
+-------------+-----------+----------------+
| 145  8   3  | 7  14  26 | 9   256  1256  |
| 1457 24  9  | 14 3   26 | 157 8    12567 |
| 17   6   12 | 9  5   8  | 137 237  4     |
+-------------+-----------+----------------+

Play this puzzle online at the Daily Sudoku site

Quote:
some XY-Wing
4,7,8 in r1c39,r2c8 and -4 in r1c7
1,2,4 in r6c4,r8c24 and -2 in r6c2
1,2,4 in r6c24,r8c4 and -4 in r8c2
or
XYZ-Wing 3,4,7 in r1c27,r2c8 and -7 in r1c9
or
UR 3,9 in r35c12 and r3c2=7


Ciao Gianni
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swando



Joined: 09 Mar 2009
Posts: 17
Location: Surrey, BC. Canada

PostPosted: Wed Dec 11, 2019 8:49 pm    Post subject: Very Hard Dec 10 Reply with quote

Why is there a 4 in column 2 row 6?
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 480
Location: Rimini, Italy

PostPosted: Wed Dec 11, 2019 10:19 pm    Post subject: Reply with quote

Why not?
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