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VH++ 033123

 
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immpy



Joined: 06 May 2017
Posts: 570

PostPosted: Fri Mar 31, 2023 6:31 pm    Post subject: VH++ 033123 Reply with quote

Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Sat Apr 01, 2023 3:40 pm    Post subject: Reply with quote

Thanks for the puzzle immp!

After basics:
Code:
+--------------+--------------+----------------+
|  46  34  2   | 9   5    67  |  17  3478 1348 |
| d569 1   39  | 8   4   e67  | f57  2    35   |
|  8   45  7   | 2   1    3   |  569 469  4569 |
+--------------+--------------+----------------+
|  2   357 1   | 567 9    4   |  8   36   356  |
| c59  8   39  | 56  2    1   |  4   369  7    |
| b579 6   4   | 57  3    8   | a59  1    2    |
+--------------+--------------+----------------+
|  17  2   5   | 4   678  9   |  3   678  168  |
|  147 9   8   | 3   67   2   |  167 5    146  |
|  3   47  6   | 1   78   5   |  2   4789 489  |
+--------------+--------------+----------------+

Then I used the chain: (5-9)r6c7=r6c1-(9=5)r5c1-(59=6)r2c1-(6=7)r2c6-(7=5)r2c7 contradiction => r6c7 <> 5; stte.
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glesco



Joined: 12 May 2022
Posts: 35

PostPosted: Sat Apr 01, 2023 7:03 pm    Post subject: Reply with quote

fx-wing -3 r4c9
xy-chain -3 r4c2, r5c8
xy-wing -5 r4c2
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