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VH+ 070623

 
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immpy



Joined: 06 May 2017
Posts: 569

PostPosted: Thu Jul 06, 2023 5:09 pm    Post subject: VH+ 070623 Reply with quote

Hello all, enjoy the puzzle.

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 560

PostPosted: Sun Jul 09, 2023 7:18 pm    Post subject: Reply with quote

Thanks for the puzzle immp!

After basics:
Code:
+----------------+-----------------+---------------+
|  46   7    26  |  468  3     1   |  9    248 5   |
|  469  5    8   |  2    469   46  |  7    1   3   |
|  3    1   d29  | e489  7     5   |  48   248 6   |
+----------------+-----------------+---------------+
| b1679 2   c169 | g16   5    h68  | i38  j378 4   |
|  156  3    156 |  146  1468  7   |  2    58  9   |
| a57   8    4   |  3    2     9   |  6    5-7 1   |
+----------------+-----------------+---------------+
|  15   6    15  |  7    48    348 |  34   9   2   |
|  8    9    3   |  5    46    2   |  1    46  7   |
|  2    4    7   | f19   19    36  |  5    36  8   |
+----------------+-----------------+---------------+

Then I used the chain 7r6c1=(7-9)r4c1=r4c3-r3c3=r3c4-(9=1)r9c4-(1=6)r4c4-(6=8)r4c6-(8=3)r4c7-(38=7)r4c8 => r6c8 <> 7; stte.
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TomC



Joined: 30 Oct 2020
Posts: 347
Location: Wales

PostPosted: Mon Jul 10, 2023 2:36 pm    Post subject: Reply with quote

Code:

+----------------+----------------+----------+
|  46    7   26  |  468  3    1   | 9  248 5 |
|  469   5   8   |  2    469  46  | 7  1   3 |
|  3     1   29  |  489  7    5   | 48 248 6 |
+----------------+----------------+----------+
| a1679  2  a169 | c16   5    68  | 38 378 4 |
| x156   3  x156 | a146 a1468 7   | 2  58  9 |
|  57    8   4   |  3    2    9   | 6  57  1 |
+----------------+----------------+----------+
| x15    6  x15  |  7    48   348 | 34 9   2 |
|  8     9   3   |  5    46   2   | 1  46  7 |
|  2     4   7   | b19   19   36  | 5  36  8 |
+----------------+----------------+----------+

Play this puzzle online at the Daily Sudoku site

I used two steps

First remove <6> from "a" as otherwise this would give a <15> unique rectangle in "x"
This reveals a <19> W wing in r4c3, r9c4 to remove <1> from r4c4 to solve (using <9> in row 3)
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Fri Jul 14, 2023 8:59 pm    Post subject: VH+ 070623 Reply with quote

Code:

+------------------+--------------------+----------------+
| 46      7    26  | 468    3       1   | 9     248    5 |
| 469     5    8   | 2      469     46  | 7     1      3 |
| 3       1   d29  |c489    7       5   | 48    248    6 |
+------------------+--------------------+----------------+
|f1679    2   e169 |b16     5      a68  | 38    378    4 |
| 156     3    156 | 146   j1468    7   | 2    i58     9 |
|g57      8    4   | 3      2       9   | 6    h57     1 |
+------------------+--------------------+----------------+
| 15      6    15  | 7     k48      34-8| 34    9      2 |
| 8       9    3   | 5      46      2   | 1     46     7 |
| 2       4    7   |b19     19      36  | 5     36     8 |
+------------------+--------------------+----------------+

(8=6)r4c6 - (6=19)r49c4 - (9)r3c4 = r3c3 - r4c3 = (9-7)r4c1 = (7-5)r6c1 = r6c8 - (5=8)r5c8 - r5c5 = (8)r7c5 => - 8r7c6; stte
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