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VH+ 050421

 
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immpy



Joined: 06 May 2017
Posts: 455

PostPosted: Tue May 04, 2021 3:41 pm    Post subject: VH+ 050421 Reply with quote

Hello all, enjoy the puzzle...

Code:

+-------+-------+-------+
| . 3 . | . 9 . | . . . |
| . 4 9 | . 6 . | . 5 . |
| . . 1 | 2 4 . | . . . |
+-------+-------+-------+
| . 7 3 | . . . | . 6 . |
| . . . | . . . | 2 1 8 |
| . 1 . | . . . | 9 . . |
+-------+-------+-------+
| . . . | . . 6 | 3 4 . |
| 1 . . | 5 . 7 | . 9 2 |
| . 2 . | . . . | . . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 443

PostPosted: Thu May 06, 2021 11:54 am    Post subject: Reply with quote

Thanks for the puzzle immp! I enjoyed that. After basics:

Code:
+---------------+--------------+----------------+
| 567  3   5678 | 78   9   158 | 14678 2   1467 |
| 2    4   9    | 378  6   138 | 178   5   137  |
| 567  568 1    | 2    4   358 | 678   378 9    |
+---------------+--------------+----------------+
| 89   7   3    | 189  18  2   | 45    6   45   |
| 4569 569 56   | 3469 7   349 | 2     1   8    |
| 468  1   2    | 468  5   48  | 9     37  37   |
+---------------+--------------+----------------+
| 579  589 578  | 18   2   6   | 3     4   157  |
| 1    68  4    | 5    3   7   | 68    9   2    |
| 3    2   5678 | 49   18  49  | 15678 78  1567 |
+---------------+--------------+----------------+

Then I used an incredibly long chain that assumed that r8c2 = 8 and arrived at a contradiction (i.e. r3c2 = 8 ). How did you others solve it?
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immpy



Joined: 06 May 2017
Posts: 455

PostPosted: Thu May 06, 2021 3:38 pm    Post subject: Reply with quote

You're welcome dongrave. I used several steps.
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immpy



Joined: 06 May 2017
Posts: 455

PostPosted: Thu May 06, 2021 3:44 pm    Post subject: Reply with quote

There was a 2-String Kite on 8 connected in Box 9, a good rinse, an X-Wing on 6, and a W-Wing 5/6.
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