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Mar 29 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 868
Location: Rimini, Italy

PostPosted: Tue Mar 29, 2022 9:34 am    Post subject: Mar 29 VH Reply with quote

Hi everyone,

Code:

+-------------+-------------+---------------+
| 9    6  124 | 125 8  15   | 1247 1247 3   |
| 124  8  5   | 12  3  7    | 9    124  6   |
| 123  7  123 | 6   4  9    | 125  8    15  |
+-------------+-------------+---------------+
| 5    9  23  | 8   7  23   | 14   6    14  |
| 1237 12 6   | 4   25 1235 | 8    57   9   |
| 8    4  17  | 15  9  6    | 57   3    2   |
+-------------+-------------+---------------+
| 247  25 247 | 3   1  8    | 6    9    457 |
| 147  15 8   | 9   6  245  | 3    245  457 |
| 6    3  9   | 7   25 245  | 1245 1245 8   |
+-------------+-------------+---------------+

Play this puzzle online at the Daily Sudoku site

XY-Wing 1,2,5 in r5c25,r6c4 and -1 in r5c6,r6c3

Ciao Gianni
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Mogulmeister



Joined: 03 May 2007
Posts: 1151

PostPosted: Tue Mar 29, 2022 10:23 am    Post subject: Reply with quote

Code:
+-------------+-------------+---------------+
| 9    6  124 | 125 8  15   | 1247 1247 3   |
| 124  8  5   | 12  3  7    | 9    124  6   |
| 123  7  123 | 6   4  9    | 125  8    15  |
+-------------+-------------+---------------+
| 5    9  d23 | 8   7 c23   | 14   6    14  |
|123-7 12e 6  | 4  b25 1235 | 8    a57  9   |
| 8    4  f17 | 15  9  6    | 5-7  3    2   |
+-------------+-------------+---------------+
| 247  25 247 | 3   1  8    | 6    9    457 |
| 147  15 8   | 9   6  245  | 3    245  457 |
| 6    3  9   | 7   25 245  | 1245 1245 8   |
+-------------+-------------+---------------+


Extending beyond xy wing (a little) we find pincers for 7 at a (r5c8) and f (r6c3) follow the chain from a to f and 7's are removed from r5c1, r6c7. Puzzle solved.
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