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Nov 23 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
PostPosted: Wed Nov 23, 2022 9:22 am    Post subject: Nov 23 VH Reply with quote
Hi everyone,

Code:

+-----------+------------+-------------+
| 26  5 7   | 34 146 13  | 189 689 269 |
| 9   4 8   | 5  16  2   | 13  36  7   |
| 236 1 36  | 7  9   8   | 4   5   26  |
+-----------+------------+-------------+
| 15  6 15  | 34 48  7   | 2   389 39  |
| 8   3 4   | 2  5   9   | 6   7   1   |
| 7   2 9   | 6  18  13  | 38  4   5   |
+-----------+------------+-------------+
| 56  9 2   | 8  3   456 | 7   1   46  |
| 4   7 356 | 1  2   56  | 39  369 8   |
| 136 8 136 | 9  7   46  | 5   2   346 |
+-----------+------------+-------------+

Play this puzzle online at the Daily Sudoku site

First step XY-Wing 1,3,8 in r26c7,r6c5 and -1 in r2c5

Second step XY-Wing 3,8,9 in r4c8,r68c7 and -9 in r8c8

Ciao Gianni
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Wed Nov 23, 2022 3:11 pm    Post subject: Nov 23 VH Reply with quote
Another solution:
13W-wing, -1R2C5, then 389xywing, -9R1C9.

Early Earl
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Wed Nov 23, 2022 3:39 pm    Post subject: Reply with quote
I used two W wings to solve

<13> W-wing -1 in r1c7, then
<89> W-wing -8 in r1c8
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