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May 29 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
PostPosted: Sun May 28, 2017 10:40 pm    Post subject: May 29 VH Reply with quote
Hi everyone,

Code:

+------------+--------------+---------------+
| 78 47  9   | 3   6    48  | 5    1   2    |
| 6  5   14  | 189 1489 2   | 78   47  3    |
| 18 3   2   | 158 1458 7   | 68   9   468  |
+------------+--------------+---------------+
| 5  9   17  | 4   178  6   | 2    3   78   |
| 2  17  3   | 59  59   18  | 1678 467 4678 |
| 4  8   6   | 2   17   3   | 17   5   9    |
+------------+--------------+---------------+
| 9  6   8   | 7   3    5   | 4    2   1    |
| 17 147 147 | 6   2    9   | 3    8   5    |
| 3  2   5   | 18  148  148 | 9    67  67   |
+------------+--------------+---------------+

Play this puzzle online at the Daily Sudoku site

some possible solutions

Quote:
W-Wing 1,7 in r5c2, r8c1 connected by number 7 in r1c12 and -1 in r8c2;
XY-Wing 1,4,7 in r5c2, r1c2, r2c3 and -1 in r4c3;
XY-Chain r1c6 4,8 - r5c6 8,1 - r5c2 1,7 - r4c3 7,1 - r2c3 1,4 and -4 in r1c2 and r2c5.


Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon May 29, 2017 5:15 am    Post subject: Reply with quote
Code:

+------------+--------------+---------------+
| 78 47  9   | 3   6    48  | 5    1   2    |
| 6  5   14  | 189 1489 2   | 78   47  3    |
| 18 3   2   | 158 1458 7   | 68   9   468  |
+------------+--------------+---------------+
| 5  9   17  | 4   178  6   | 2    3   78   |
| 2  17  3   | 59  59   18  | 1678 467 4678 |
| 4  8   6   | 2   17   3   | 17   5   9    |
+------------+--------------+---------------+
| 9  6   8   | 7   3    5   | 4    2   1    |
| 17 147 147 | 6   2    9   | 3    8   5    |
| 3  2   5   | 18  148  148 | 9    67  67   |
+------------+--------------+---------------+

Play this puzzle online at the Daily Sudoku site

Too lazy to look further
XY-Wing with pincer transport
XY-Wing (14-7) pivot r2c3. Transport pincer 7 from r2c8 to
r9c9 via r9c8=> -7r4c9
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
PostPosted: Mon May 29, 2017 9:27 am    Post subject: yet another solution Reply with quote
If r3c9 is not 4 we immediately get two 1s in block 1 so r3c9 must be 4 and this solves the puzzle
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