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Nov 12 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1024
Location: Rimini, Italy

PostPosted: Wed Nov 12, 2025 5:53 pm    Post subject: Nov 12 VH Reply with quote

Hi everyone,

Code:

+---------+-----------+------------+
| 2  8 4  | 1   39 5  | 6   37 79  |
| 5  3 6  | 289 7  28 | 29  4  1   |
| 9  7 1  | 23  6  4  | 23  8  5   |
+---------+-----------+------------+
| 38 9 7  | 238 4  6  | 5   1  238 |
| 1  5 38 | 7   23 9  | 4   6  238 |
| 6  4 2  | 5   1  38 | 389 37 79  |
+---------+-----------+------------+
| 4  1 59 | 239 8  23 | 7   25 6   |
| 7  2 38 | 6   5  1  | 38  9  4   |
| 38 6 59 | 4   29 7  | 1   25 38  |
+---------+-----------+------------+

Play this puzzle online at the Daily Sudoku site

Quote:

Remote Pair 3/8 r5c3 - r8c3 - r8c7 - r9c9 = r5c9<>3, r5c9<>8
or
Skyscraper 3 in r5c5,r6c8 connected by r1c58 = r5c9,r6c6<>3
or
Skyscraper 8 in r5c3,r9c1 connected by r59c9 = r4c1,r8c3<>8
or
Skyscraper 8 in r5c9,r8c7 connected by r58c3 = r6c7,r9c9<>8
or
Skyscraper 8 in r5c3,r6c7 connected by r8c37 = r5c9<>8
or
W-Wing 3/8 in r4c1,r9c9 connected by 8 in r5c39 = r4c9,r9c1<>3
or
W-Wing 3/8 in r8c3,r9c9 connected by 8 in r5c39 = r8c7,r9c1<>3
or
W-Wing 8/3 in r5c3,r9c9 connected by 3 in r8c37 = r5c9<>8
or
W-Wing 8/3 in r5c3,r9c9 connected by 3 in r49c1 = r5c9<>8
or
W-Wing 8/3 in r5c3,r9c9 connected by 3 in r8c3,r9c1 = r5c9<>8


Ciao Gianni
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dongrave



Joined: 06 Mar 2014
Posts: 573

PostPosted: Sat Nov 15, 2025 3:14 pm    Post subject: Reply with quote

I used 3 VH steps to solve it starting with the 238 XY Wing at r26c6,r3c4 (-3r4c4) which opens up an X Wing of 3's in rows 4 and 9 (-3r5c9) which opens up a 238 XY Wing at r5c59,r6c6 (-8r6c7) which solves it.
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