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Nov 30 NVH

 
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hughwill



Joined: 05 Apr 2010
Posts: 413
Location: Birmingham UK

PostPosted: Fri Nov 30, 2018 10:21 am    Post subject: Nov 30 NVH Reply with quote

Code:

+--------------+-----------+------------------+
| 6   5   9    | 4   2   8 | 1      3    7    |
| 3   2   8    | 1   5   7 | 469    69   46   |
| 4   1   7    | 9   6   3 | 58     2    58   |
+--------------+-----------+------------------+
| 8   69  2456 | 35  7   1 | 234569 569  2456 |
| 15  3   1245 | 6   48  9 | 2458   7    2458 |
| 7   69  456  | 358 348 2 | 345689 5689 1    |
+--------------+-----------+------------------+
| 2   4   36   | 38  1   5 | 7      68   9    |
| 59  689 356  | 7   389 4 | 2568   1    2568 |
| 159 7   15   | 2   89  6 | 58     4    3    |
+--------------+-----------+------------------+

Play this puzzle online at the Daily Sudoku site

Check the Grade: =VH
r8c2=8 (basic move)
Check the Grade: =H

Another algorithm fail!
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immpy



Joined: 06 May 2017
Posts: 233

PostPosted: Fri Nov 30, 2018 11:55 pm    Post subject: Reply with quote

Please check out my latest thread in "Other Puzzles" for something with a little more meat to it. Thanks.
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RobertRattley



Joined: 24 Jun 2007
Posts: 104
Location: Australia

PostPosted: Sun Dec 02, 2018 6:31 pm    Post subject: Reply with quote

I could not see how to solve this puzzle without "very hard" steps.
I found an x-wing 8 and an xy-wing 345.
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 378
Location: Rimini, Italy

PostPosted: Sun Dec 02, 2018 7:53 pm    Post subject: Reply with quote

Hi Robert,

you can clean the scheme with:

r8c2=8
naked pair 5,8 in r39c7
locked number 6 in r78c3
locked number 5 in r36c8
locked number 5 in r5c13 and r6c3=4
and it's ok.

Ciao Gianni
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RobertRattley



Joined: 24 Jun 2007
Posts: 104
Location: Australia

PostPosted: Mon Dec 03, 2018 1:16 pm    Post subject: Reply with quote

Gianni

Thank you kindly
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