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Nov 26 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Mon Nov 26, 2018 8:16 am    Post subject: Nov 26 VH Reply with quote
Hi everyone,

Code:

+-------------+--------------+----------+
| 8  12  59   | 3    25   7  | 4  159 6 |
| 16 127 567  | 2468 2458 9  | 78 15  3 |
| 4  3   5679 | 1    58   68 | 78 59  2 |
+-------------+--------------+----------+
| 9  5   1    | 27   27   3  | 6  8   4 |
| 7  4   8    | 5    6    1  | 2  3   9 |
| 3  6   2    | 48   9    48 | 1  7   5 |
+-------------+--------------+----------+
| 2  8   467  | 467  3    5  | 9  46  1 |
| 5  17  467  | 9    147  46 | 3  2   8 |
| 16 9   3    | 468  148  2  | 5  46  7 |
+-------------+--------------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Chain r2c1-1-r1c2-2-r1c5-5-r3c5-8-r3c6 and -6 in r2c4,r3c3


Ciao Gianni
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hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
PostPosted: Mon Nov 26, 2018 11:40 am    Post subject: Reply with quote
After 2 VHs which were solvable by basics, I think we've got one
that is a 4 stepper needing all 3 VH techniques!

Code:

+-------------+--------------+----------+
| 8  12  59   | 3    25   7  | 4  159 6 |
| 16 127 567  | 2468 2458 9  | 78 15  3 |
| 4  3   5679 | 1    58   68 | 78 59  2 |
+-------------+--------------+----------+
| 9  5   1    | 27   27   3  | 6  8   4 |
| 7  4   8    | 5    6    1  | 2  3   9 |
| 3  6   2    | 48   9    48 | 1  7   5 |
+-------------+--------------+----------+
| 2  8   467  | 467  3    5  | 9  46  1 |
| 5  17  467  | 9    147  46 | 3  2   8 |
| 16 9   3    | 468  148  2  | 5  46  7 |
+-------------+--------------+----------+

Play this puzzle online at the Daily Sudoku site

1. X Wing on 6 r37c36 -6r26c3
2. XYX Wing 684 pivot r9c4 -4r7c4
3. XY Wing 67-4 pivot r7c4 -4r7c3
4. XY wing 468 pivot r7c6 -8r6c4

Unless someone knows better, of course....

Hugh
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RobertRattley



Joined: 24 Jun 2007
Posts: 118
Location: Australia
PostPosted: Thu Nov 29, 2018 2:47 pm    Post subject: Reply with quote
I agree with Hugh. 4 steps!
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