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Mar 14 VH

 
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roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden

PostPosted: Tue Mar 14, 2017 10:48 am    Post subject: Mar 14 VH Reply with quote

XY-wing pivot r4c8 or r7c8 solves it.
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ZeroAssoluto



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

PostPosted: Tue Mar 14, 2017 3:33 pm    Post subject: Reply with quote

Hi,
There are tooooo... many solutions to unlock this scheme

Quote:
W-Wing 5,6 in r4c3 and r7c8 connected by number 5 in r47c1;
Skyscraper with numner 6 in r4c38 and r7c28 or in r48c3 and r68c9;
Simple Colors with numner 6 in r4c3,r6c9,r7c2 and r4c8,r6c2,r7c8,r8c3,r8c9;
XY-Chain r6c2,r7c2,r7c1,r7c8,r4c8.


Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Wed Mar 15, 2017 12:21 am    Post subject: Reply with quote

Code:

+----------+--------+---------------+
| 9  4  1  | 3  2 5 | 6   8    7    |
| 8  35 2  | 7  4 6 | 35  9    1    |
| 6  35 7  | 1  8 9 | 235 2345 2345 |
+----------+--------+---------------+
| 25 1  56 | 8  3 7 | 4   26   9    |
| 4  9  3  | 25 6 1 | 8   7    25   |
| 7  26 8  | 25 9 4 | 235 1    2356 |
+----------+--------+---------------+
| 25 26 9  | 4  7 3 | 1   56   8    |
| 3  8  56 | 9  1 2 | 7   456  456  |
| 1  7  4  | 6  5 8 | 9   23   23   |
+----------+--------+---------------+

Play this puzzle online at the Daily Sudoku site

This is a move I don't see frequently, but there's a Sashimi X-Wing or Grouped Skyscraper on 6 in c38=> -6r8c9.
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