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Nov 18 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 892
Location: Rimini, Italy

PostPosted: Sat Nov 18, 2023 10:06 am    Post subject: Nov 18 VH Reply with quote

Hi everyone,

Code:

+-------------+-----------+-----------------+
| 2  149 1569 | 158 18 3  | 14569 7    1469 |
| 57 3   1567 | 4   2  9  | 156   56   8    |
| 8  149 159  | 15  7  6  | 2     3    149  |
+-------------+-----------+-----------------+
| 9  6   2    | 7   3  4  | 8     1    5    |
| 4  5   8    | 19  16 2  | 3     69   7    |
| 1  7   3    | 89  68 5  | 469   2    469  |
+-------------+-----------+-----------------+
| 3  19  4    | 2   59 18 | 7     5689 169  |
| 6  8   159  | 3   59 7  | 159   4    2    |
| 57 2   1579 | 6   4  18 | 159   589  3    |
+-------------+-----------+-----------------+

Play this puzzle online at the Daily Sudoku site

First step
X-Wing with number 1 in r28c37 and -1 in r1c37,r39c3,r9c7

Code:

+-------------+----------+---------------+
| 2  149 569  | 158 18 3 | 4569 7   1469 |
| 57 3   1567 | 4   2  9 | 156  56  8    |
| 8  149 59   | 15  7  6 | 2    3   149  |
+-------------+----------+---------------+
| 9  6   2    | 7   3  4 | 8    1   5    |
| 4  5   8    | 19  16 2 | 3    69  7    |
| 1  7   3    | 89  68 5 | 469  2   469  |
+-------------+----------+---------------+
| 3  19  4    | 2   59 8 | 7    569 169  |
| 6  8   159  | 3   59 7 | 159  4   2    |
| 57 2   579  | 6   4  1 | 59   8   3    |
+-------------+----------+---------------+

Play this puzzle online at the Daily Sudoku site

Second step
XYZ-Wing 1,5,9 in r38c3,r7c2 and -9 in r9c3

Ciao Gianni
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