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Jun 8 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Thu Jun 07, 2012 11:20 pm    Post subject: Jun 8 VH Reply with quote
Two steps for me:-
After the basics
Code:

+-----------+----------------+---------+
| 3  567 45 | 678  4567 1    | 468 9 2 |
| 46 267 1  | 2678 9    2467 | 468 5 3 |
| 8  256 9  | 26   456  3    | 46  7 1 |
+-----------+----------------+---------+
| 7  56  2  | 4    1    5-6   | 9   3 8 |
| -69 8   *35 | 269  36   256  | 7   1 4 |
| 49 1   34 | 79   37   8    | 2   6 5 |
+-----------+----------------+---------+
| 2  3   78 | 5    678  67   | 1   4 9 |
| 1  4   6  | 3    2    9    | 5   8 7 |
| 5  9   78 | 1    478  47   | 3   2 6 |
+-----------+----------------+---------+
XY-Wing 56 35 36 pivoted in r5c3; r5c1<>6, r4c6<>6 reduces to BUG+1; r3c5=6.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Thu Jun 07, 2012 11:37 pm    Post subject: Jun 8 VH Reply with quote
Or instead of the BUG+1 above the XYZ-Wing 456 hinged in r3c5; r3c4<>6.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Jun 08, 2012 1:23 am    Post subject: Reply with quote
Also after the first wing, there's an XY-Wing (265) pivoted in r3c4.

Code:

+---------+------------+--------+
| 3 57 4  | 78 56  1   | 68 9 2 |
| 6 27 1  | 78 9   247 | 48 5 3 |
| 8 25 9  | 26 456 3   | 46 7 1 |
+---------+------------+--------+
| 7 6  2  | 4  1   5   | 9  3 8 |
| 9 8  5  | 26 3   26  | 7  1 4 |
| 4 1  3  | 9  7   8   | 2  6 5 |
+---------+------------+--------+
| 2 3  78 | 5  68  67  | 1  4 9 |
| 1 4  6  | 3  2   9   | 5  8 7 |
| 5 9  78 | 1  48  47  | 3  2 6 |
+---------+------------+--------+

Play this puzzle online at the Daily Sudoku site
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