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Nov 15 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 685
Location: Rimini, Italy

PostPosted: Mon Nov 15, 2021 8:47 am    Post subject: Nov 15 VH Reply with quote

Hi everyone,

Code:

+-------------+-------------+------------+
| 3   7   129 | 169 169 5   | 249 49   8 |
| 19  8   4   | 3   7   12  | 29  5    6 |
| 6   5   29  | 49  8   24  | 1   3    7 |
+-------------+-------------+------------+
| 2   469 7   | 146 3   148 | 49  1489 5 |
| 8   46  5   | 2   16  9   | 7   14   3 |
| 149 3   19  | 47  5   478 | 6   489  2 |
+-------------+-------------+------------+
| 5   19  3   | 179 2   17  | 8   6    4 |
| 49  2   8   | 5   49  6   | 3   7    1 |
| 7   14  6   | 8   14  3   | 5   2    9 |
+-------------+-------------+------------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 1,2,9 in r2c16,r3c3 and -2 in r3c6
or
W-Wing 2,9 in r2c7,r3c3 SL with number 2 in r1c37 and -9 in r2c1


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 227
Location: Wales

PostPosted: Mon Nov 15, 2021 10:22 am    Post subject: Reply with quote

r1c3 <> 1

As then r2c1=9, r2c7=2 which gives in row 1 <69> and <49> pairs and no room for a <2>

Or you could treat it like a sort of W wing giving no <9> in box 3
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Mogulmeister



Joined: 03 May 2007
Posts: 1136

PostPosted: Mon Nov 15, 2021 10:46 am    Post subject: Reply with quote

The fact that you have conflicting NPs in the same row is contradiction enough ! QED

Maybe go for the jugular and just say r2c1 can not be 9 because of the NPís. ?
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TomC



Joined: 30 Oct 2020
Posts: 227
Location: Wales

PostPosted: Mon Nov 15, 2021 7:01 pm    Post subject: Reply with quote

Yes the not 9 in r2c1 has a better symmetry

//1-<69>
9
\\2-<49>
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Mogulmeister



Joined: 03 May 2007
Posts: 1136

PostPosted: Mon Nov 15, 2021 9:21 pm    Post subject: Reply with quote

I think thatís the first time Iíve ever seen a double NP contradiction.
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