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VH+ 012724

 
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Sat Jan 27, 2024 5:50 pm    Post subject: VH+ 012724 Reply with quote
Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Sun Jan 28, 2024 11:59 am    Post subject: Reply with quote
Remove <8> from r9c7 to solve
Code:

+--------------+----------------+----------------+
| 1    6   2   | 458   58    3  |  7     9   458 |
| 45   7   3   | 4568  9     56 |  1     2   458 |
| 459  8   59  | 7     1     2  |  6    e45  3   |
+--------------+----------------+----------------+
| 259  3   4   | 58    2568  1  | b89    7   256 |
| 8   c59  6   | 3     25    7  |  49    1   245 |
| 25   1   7   | 9     2568  4  |  3     58  256 |
+--------------+----------------+----------------+
| 6    59  159 | 15    4     8  |  2     3   7   |
| 3    4   8   | 2     7     9  |  5     6   1   |
| 7    2   15  | 156   3     56 | a48   d48  9   |
+--------------+----------------+----------------+

Play this puzzle online at the Daily Sudoku site

If a=8, b=9, c=9
If a=8, d=4, e=5, c=5
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glesco



Joined: 12 May 2022
Posts: 36
PostPosted: Sun Jan 28, 2024 7:30 pm    Post subject: Reply with quote
I used an XY-chain to anchoured at r7c2 & r3c3 to eliminate 9 at r7c3.

Starting at r7c2 up c2, across r5, down c7, across r9, up c8, across r3 to r3c3.
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Mon Jan 29, 2024 2:02 pm    Post subject: Reply with quote
Thanks for the puzzle immp! After basics:

Code:
+---------------+---------------+---------------+
|  1   6    2   | 458  58   3   |  7    9   489 |
| d45  7    3   | 4568 9    56  |  1    2   458 |
| d459 8   e59  | 7    1    2   |  6    4-5 3   |
+---------------+---------------+---------------+
| c259 3    4   | 58   2568 1   | b89   7   256 |
|  8   59   6   | 3    25   7   |  49   1   245 |
| c25  1    7   | 9    2568 4   |  3   a58  256 |
+---------------+---------------+---------------+
|  6   59   159 | 15   4    8   |  2    3   7   |
|  3   4    8   | 2    7    9   |  5    6   1   |
|  7   2    15  | 156  3    56  |  48   48  9   |
+---------------+---------------+---------------+

Then I used the chain (5=8)r6c8-(8=9)r4c7-(9=2|5)r46c1-5r23c1=r3c3 => r3c8 != 5; stte.
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