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VH++ 042523

 
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immpy



Joined: 06 May 2017
Posts: 571

PostPosted: Tue Apr 25, 2023 6:26 pm    Post subject: VH++ 042523 Reply with quote

Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Wed Apr 26, 2023 1:40 pm    Post subject: Reply with quote

Thanks for the puzzle immp!

After basics:
Code:
+----------------+-------------+-------------------+
|  1    35  4    | 23  8   57  |  2357   9    6    |
|  239  6   2579 | 23  4   1   |  2357   8    2357 |
| a23   8   257  | 9   6   57  | b12357 c1257 4    |
+----------------+-------------+-------------------+
|  57   4   3    | 1   2   6   |  8      57   9    |
|  57   2   1    | 8   9   4   |  6      3    57   |
|  6    9   8    | 5   7   3   |  4     d12  e12   |
+----------------+-------------+-------------------+
|  8    35  59   | 4   1   2   |  379    6    37   |
|  29-3 7   29   | 6   5   8   |  139    4   f13   |
|  4    1   6    | 7   3   9   |  25     25   8    |
+----------------+-------------+-------------------+

Then I used the following chain: 3r3c1 = (3-1)r3c7 = r3c8 - r6c8 = r6c9 - (1=3)r8c9 => r8c1 <> 3; stte.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Sun Apr 30, 2023 4:02 pm    Post subject: VH ++ 042523 Reply with quote

Code:

+-------------------+---------------+-----------------------+
| 1      5-3   4    | 23    8    57 | 2357     9       6    |
| 239    6     2579 | 23    4    1  | 2357     8       2357 |
|f23     8     257  | 9     6    57 |e12357    1257    4    |
+-------------------+---------------+-----------------------+
| 57     4     3    | 1     2    6  | 8        57      9    |
| 57     2     1    | 8     9    4  | 6        3       57   |
| 6      9     8    | 5     7    3  | 4        12      12   |
+-------------------+---------------+-----------------------+
| 8     a35    59   | 4     1    2  |b3579     6      b37   |
| 29-3   7     29   | 6     5    8  |d139      4      c13   |
| 4      1     6    | 7     3    9  | 25       25      8    |
+-------------------+---------------+-----------------------+

Almost like dongrave
(3)r7c2 = r7c79 - (3=1)r8c9 - r8c7 = (1-3)r3c7 = (3)r3c1 => - 3r1c2,r8c1; stte
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