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Oct 26 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 872
Location: Rimini, Italy

PostPosted: Thu Oct 26, 2023 9:34 am    Post subject: Oct 26 VH Reply with quote

Hi everyone,

Code:

+-----------+----------+-----------+
| 17 39 8   | 35 45 49 | 6   17 2  |
| 47 5  6   | 23 1  29 | 347 8  49 |
| 14 39 2   | 7  6  8  | 34  19 5  |
+-----------+----------+-----------+
| 5  6  479 | 8  79 3  | 47  2  1  |
| 2  1  79  | 4  79 5  | 8   6  3  |
| 3  8  47  | 6  2  1  | 5   79 49 |
+-----------+----------+-----------+
| 9  4  3   | 1  8  7  | 2   5  6  |
| 8  2  5   | 9  3  6  | 1   4  7  |
| 6  7  1   | 25 45 24 | 9   3  8  |
+-----------+----------+-----------+

Play this puzzle online at the Daily Sudoku site

Quote:

XY-Wing 1,4,9 in r2c9,r3c18 and -4 in r2c1,r3c7
or
XY-Wing 3,4,9 in r2c9,r3c27 and -9 in r3c8
or
XYZ-Wing 3,4,7 in r2c17,r3c7 and -4 in r2c9
or
W-Wing 4,7 in r2c1,r4c7 SL with number 4 in r3c17 and -7 in r2c7
or
W-Wing 4,7 in r2c1,r4c7 SL with number 4 in r26c9 and -7 in r2c7
or
UR 7,9 in r45c35 and -7 and -9 in r4c3


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 349
Location: Wales

PostPosted: Fri Oct 27, 2023 12:26 pm    Post subject: Reply with quote

Or you could use the XY chain 17-47-49-19 in r1c1, r2c19, r3c8 to remove <1> from r3c1 and r1c8
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