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21 Jui VH

 
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Clement



Joined: 24 Apr 2006
Posts: 934
Location: Dar es Salaam Tanzania

PostPosted: Fri Jul 20, 2018 10:11 pm    Post subject: 21 Jui VH Reply with quote

X-Wing on 1 in r18c78; r1c78, r8c78 <> 1; stte
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dongrave



Joined: 06 Mar 2014
Posts: 326

PostPosted: Sat Jul 21, 2018 4:50 pm    Post subject: Reply with quote

I think I solved it with just basics. Unless I screwed up there was a naked 246 in r148c4 to get to the following grid.
Code:
+-----------------+--------------+---------------+
| 1248  5    7    | 24  9   6    | 128  1238 13  |
| 248   6    2348 | 1   37  24   | 2789 5    79  |
| 9     12   23   | 8   37  5    | 6    127  4   |
+-----------------+--------------+---------------+
| 7     28   28   | 46  46  1    | 3    9    5   |
| 6     3    1    | 579 25  29   | 4    27   8   |
| 5     4    9    | 37  8   23   | 127  127  6   |
+-----------------+--------------+---------------+
| 3     17   6    | 59  45  8    | 179  147  2   |
| 124   9    5    | 246 246 7    | 18   1348 13  |
| 248   278  248  | 39  1   2349 | 5    6    79  |
+-----------------+--------------+---------------+

And then a naked 127 in r356c8 which solved it.
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Clement



Joined: 24 Apr 2006
Posts: 934
Location: Dar es Salaam Tanzania

PostPosted: Sat Jul 21, 2018 8:01 pm    Post subject: Reply with quote

dongrave wrote:
I think I solved it with just basics. Unless I screwed up there was a naked 246 in r148c4 to get to the following grid.
Code:
+-----------------+--------------+---------------+
| 1248  5    7    | 24  9   6    | 128  1238 13  |
| 248   6    2348 | 1   37  24   | 2789 5    79  |
| 9     12   23   | 8   37  5    | 6    127  4   |
+-----------------+--------------+---------------+
| 7     28   28   | 46  46  1    | 3    9    5   |
| 6     3    1    | 579 25  29   | 4    27   8   |
| 5     4    9    | 37  8   23   | 127  127  6   |
+-----------------+--------------+---------------+
| 3     17   6    | 59  45  8    | 179  147  2   |
| 124   9    5    | 246 246 7    | 18   1348 13  |
| 248   278  248  | 39  1   2349 | 5    6    79  |
+-----------------+--------------+---------------+

And then a naked 127 in r356c8 which solved it.
You are right. I missed the naked triple 127 in r356c8.
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dongrave



Joined: 06 Mar 2014
Posts: 326

PostPosted: Sat Jul 21, 2018 9:41 pm    Post subject: Reply with quote

Thanks Clement! Well now we clearly know where Sam's bug lies! He's obviously not exhausting all possible basic moves before also examining advanced moves. You can't do that when you're rating the difficulty of a puzzle Sam! (And this guy Sam is supposedly a 'genius'? If he's a genius, my Dad was Einstein!)
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