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VH++ 011723

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immpy

Joined: 06 May 2017
Posts: 571

Posted: Tue Jan 17, 2023 8:11 pm Post subject: VH++ 011723

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

dongrave

Joined: 06 Mar 2014
Posts: 568

Posted: Wed Jan 18, 2023 2:18 pm Post subject:

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.

TomC

Joined: 30 Oct 2020
Posts: 358
Location: Wales

Posted: Wed Jan 18, 2023 8:19 pm Post subject:

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

Clement

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

Posted: Thu Jan 19, 2023 4:29 pm Post subject: VH ++011723

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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