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VH+ 112025

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immpy

Joined: 06 May 2017
Posts: 575

Posted: Fri Nov 21, 2025 12:42 am Post subject: VH+ 112025

Hello all, enjoy the puzzle...

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers, immp

dongrave

Joined: 06 Mar 2014
Posts: 576

Posted: Tue Nov 25, 2025 1:05 am Post subject:

Thanks for the puzzle immp! After basics:

Code:

+---------------+--------------------+--------------+
| 5 3 k49 | 78 6 j149 | 2 19 78 |
| 1 2489 6 | 3789 239 i2349 | 57 359 789 |
| 7 289 29 | 1389 239 5 | 4 139 6 |
+---------------+--------------------+--------------+
| 2 169 19 | 4 379 h369 | 8 67 5 |
| 3 a5*6 7 | f56 1 8 | 9 2 4 |
| 8 4569 L459 | 2 579 g69 | 1 67 3 |
+---------------+--------------------+--------------+
| 9 b15 3 | 156 4 7 | 56 8 2 |
| 4 c125 8 | 13569 2359 12369 | 567 59 179 |
| 6 7 d125 | 159 8 e12*9 | 3 4 19 |
+---------------+--------------------+--------------+

Then I used the following chain (using p+p as usual) to solve it:

5*r5c2-[(5=1)r7c2-(15=2)r8c2-r9c3=2*r9c6]-(5=6)r5c4-(6=9)r6c6-(69=3)r4c6-(2*39=4)r2c6-r1c6=r1c3-(45*=9)r6c3 contradiction (i.e. 9r6c36) => r5c2 != 5; stte.

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