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VH++ 011723

 
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immpy



Joined: 06 May 2017
Posts: 570

PostPosted: Tue Jan 17, 2023 8:11 pm    Post subject: VH++ 011723 Reply with quote

Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Wed Jan 18, 2023 2:18 pm    Post subject: Reply with quote

Thanks for puzzle immp! That one seemed like a VH+ to me (but your previous one seemed like a VH++! Smile

Here's the grid that I ended up with after basics:

Code:
+---------------+-------------+----------------+
| 37   238 378  | 6   5   247 | f247  1    9   |
| 179  29  5    | 18  189 247 |  3    2-4  6   |
| 169  4   16   | 3   19  27  | e27   5    8   |
+---------------+-------------+----------------+
| 8    69  2    | 7   3   5   |  19   469  14  |
| 17  c36  17   | 9   4   8   | d26   236  5   |
| 349  5   34   | 2   6   1   |  8    39   7   |
+---------------+-------------+----------------+
| 346  1   3468 | 5   28  9   |  46   7    234 |
| 2   b38  9    | 148 7   6   |  5   a48   134 |
| 5    7   468  | 148 128 3   |  19   4689 124 |
+---------------+-------------+----------------+

Then I used the chain (4=8)r8c8-(8=3)r8c2-(3=6)r5c2-(6=2)r5c7-(2=7)r3c7-(27=4)r1c7 => r2c8 <> 4; stte.
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TomC



Joined: 30 Oct 2020
Posts: 349
Location: Wales

PostPosted: Wed Jan 18, 2023 8:19 pm    Post subject: Reply with quote

Remove <4> from r9c3 to solve
Code:

+-----------------+-------------+-----------------+
| 37    238  378  | 6   5   247 |  247   1    9   |
| 179   29   5    | 18  189 247 |  3     24   6   |
| 169   4    16   | 3   19  27  |  27    5    8   |
+-----------------+-------------+-----------------+
| 8     69   2    | 7   3   5   |  19    469  14  |
| 17   d36   17   | 9   4   8   |  c26   236  5   |
| 349   5   e34   | 2   6   1   |  8     39   7   |
+-----------------+-------------+-----------------+
| 346   1    3468 | 5   28  9   |  46    7    234 |
| 2     38   9    | 148 7   6   |  5     48   134 |
| 5     7   a468  | 148 128 3   |  19   b4689 124 |
+-----------------+-------------+-----------------+


If a=4, b=6, c=6, d=3, e=4 means a<>4
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Thu Jan 19, 2023 4:29 pm    Post subject: VH ++011723 Reply with quote

Code:

+--------------------+-------------------+---------------------+
| 37     238    378  | 6      5      247 | 247     1       9   |
| 179   c29     5    | 18     189    247 | 3      c24      6   |
| 169    4      16   | 3      19     27  | 27      5       8   |
+--------------------+-------------------+---------------------+
| 8     d69     2    | 7      3      5   | 1469    469     14  |
| 137    3-6    137  | 9      4      8   |a26     b236     5   |
| 349    5      34   | 2      6      1   | 8       39      7   |
+--------------------+-------------------+---------------------+
| 346    1      3468 | 5      28     9   | 46      7       234 |
| 2      38     9    | 148    7      6   | 5       48      134 |
| 5      7      468  | 148    128    3   | 1469    4689    124 |
+--------------------+-------------------+---------------------+

(6=2)r5c7 - r5c8 = (29)r2c82 - (9=6)r4c2 => - 6r5c2; stte
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