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Aug 12 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 863
Location: Rimini, Italy

PostPosted: Sat Aug 12, 2023 9:35 am    Post subject: Aug 12 VH Reply with quote

Hi everyone,

Code:

+-------------+-------------+----------+
| 8    5  7   | 4   6  1    | 3  2 9   |
| 1    9  6   | 3   25 25   | 7  8 4   |
| 234  24 234 | 8   9  7    | 6  5 1   |
+-------------+-------------+----------+
| 26   1  8   | 7   3  256  | 4  9 256 |
| 2469 3  249 | 1   25 2569 | 8  7 256 |
| 269  7  5   | 29  8  4    | 1  3 26  |
+-------------+-------------+----------+
| 2359 8  239 | 6   4  29   | 59 1 7   |
| 59   6  1   | 59  7  8    | 2  4 3   |
| 7    24 249 | 259 1  3    | 59 6 8   |
+-------------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
W-Wing
W-Wing 5,9 in r7c7,r8c4 SL with number 5 in r78c1 and -9 in r7c6
or
W-Wing 5,9 in r7c7,r8c4 SL with number 5 in r9c47 and -9 in r7c6


Ciao Gianni
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dongrave



Joined: 06 Mar 2014
Posts: 560

PostPosted: Sat Aug 12, 2023 5:00 pm    Post subject: Reply with quote

Using just VH moves, there's an X-Wing on 9's in rows 6 and 8 (-9r57c1, -9r9c4) which opens up a 29-5 XY-Wing at r7c67,r9c4 (-5r9c7) which solves it.
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