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Aug 23 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Tue Aug 23, 2022 8:30 am    Post subject: Aug 23 VH Reply with quote
Hi everyone,

Code:

+-------------+----------+--------+
| 8    3 9    | 5  4  1  | 6 7 2  |
| 5    7 4    | 3  6  2  | 8 9 1  |
| 26   1 26   | 79 8  79 | 3 5 4  |
+-------------+----------+--------+
| 4    6 37   | 78 39 5  | 1 2 89 |
| 9    8 5    | 2  1  6  | 7 4 3  |
| 37   2 1    | 4  39 78 | 5 6 89 |
+-------------+----------+--------+
| 2367 9 2367 | 68 5  38 | 4 1 67 |
| 1    4 36   | 69 7  39 | 2 8 5  |
| 67   5 8    | 1  2  4  | 9 3 67 |
+-------------+----------+--------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing
3,6,7 in r48c3,r9c1 and -7 in r6c1,r7c3
3,6,7 in r69c1,r8c3 and -3 in r4c3,r7c1
3,7,8 in r6c16,r7c6 and -3 in r7c1


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Tue Aug 23, 2022 12:47 pm    Post subject: Another way Reply with quote
r4c4 = 8 to solve

Code:

+---------------+-------------+--------+
| 8    3   9    |  5   4   1  | 6 7 2  |
| 5    7   4    |  3   6   2  | 8 9 1  |
| 26   1   26   | d79  8   79 | 3 5 4  |
+---------------+-------------+--------+
| 4    6  a37   | x78  39  5  | 1 2 89 |
| 9    8   5    |  2   1   6  | 7 4 3  |
| 37   2   1    |  4   39  78 | 5 6 89 |
+---------------+-------------+--------+
| 2367 9   2367 |  68  5   38 | 4 1 67 |
| 1    4  b36   | c69  7   39 | 2 8 5  |
| 67   5   8    |  1   2   4  | 9 3 67 |
+---------------+-------------+--------+

XY chain abcd gives pincers of <7> in a + d to remove <7> from x
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glesco



Joined: 12 May 2022
Posts: 36
PostPosted: Tue Aug 23, 2022 7:37 pm    Post subject: Reply with quote
UR -67 r7c1
236XY-Wing -6 r3c3,r9c1
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