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Nov 03 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1019
Location: Rimini, Italy
PostPosted: Thu Nov 03, 2022 10:46 am    Post subject: Nov 03 VH Reply with quote
Hi everyone,

Code:

+------------+-------------+--------------+
| 8  569 459 | 3   7  129  | 14   456 25  |
| 3  67  47  | 16  5  12   | 1478 9   278 |
| 2  1   579 | 69  8  4    | 3    56  57  |
+------------+-------------+--------------+
| 79 79  6   | 2   13 13   | 5    8   4   |
| 5  3   2   | 8   4  6    | 9    7   1   |
| 1  4   8   | 7   9  5    | 6    2   3   |
+------------+-------------+--------------+
| 49 8   3   | 5   2  79   | 47   1   6   |
| 6  2   19  | 149 13 1379 | 478  45  578 |
| 47 57  157 | 14  6  8    | 2    3   9   |
+------------+-------------+--------------+

Play this puzzle online at the Daily Sudoku site

Quote:
UR 1,3 in r48c56 and -1 -3 in r8c6
or
XYZ-Wing 1,4,9 in r8c34,r9c4 and -1 in r8c56
AND N.Pair 7,9 in r78c6
or only with one step
AIC in r8c4
if r8c4=9 -9 in r7c6,r8c3
if r8c4=-9 r3c4=9 r2c4=6 r2c2=7 r4c2=9 r4c1=7 r7c1=9 and -9 in r7c6,r8c3


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 359
Location: Wales
PostPosted: Thu Nov 03, 2022 11:43 am    Post subject: A non Standard Solution Reply with quote
Remove <9> from r1c6 and r8c4 to solve

Code:

+------------+-----------------+-----------------+
| 8  569 459 |  3    7   x129  | 14     456  25  |
| 3  67  47  |  16   5    12   | 1478   9    278 |
| 2  1   579 | a69   8    4    | 3     b56   57  |
+------------+-----------------+-----------------+
| 79 79  6   |  2    13   13   | 5      8    4   |
| 5  3   2   |  8    4    6    | 9      7    1   |
| 1  4   8   |  7    9    5    | 6      2    3   |
+------------+-----------------+-----------------+
| 49 8   3   |  5    2   e79   | d47    1    6   |
| 6  2   19  | x149  13   1379 | 478   c45   578 |
| 47 57  157 |  14   6    8    | 2      3    9   |
+------------+-----------------+-----------------+

XY chain abcde gives pincers of <9> in a + e to remove <9> from x
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