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Feb 05 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Sun Feb 04, 2018 11:22 pm    Post subject: Feb 05 VH Reply with quote
Hi everyone,

Code:

+-----------+------------+------------+
| 6  179 79 | 4  3   19  | 5   2   8  |
| 3  4   8  | 15 2   156 | 9   16  7  |
| 5  19  2  | 8  69  7   | 136 136 4  |
+-----------+------------+------------+
| 4  6   1  | 3  59  59  | 8   7   2  |
| 29 279 79 | 6  1   8   | 34  34  5  |
| 8  5   3  | 27 47  24  | 16  9   16 |
+-----------+------------+------------+
| 7  8   5  | 9  46  16  | 2   146 3  |
| 1  3   6  | 27 8   24  | 47  5   9  |
| 29 29  4  | 15 567 3   | 167 8   16 |
+-----------+------------+------------+

Play this puzzle online at the Daily Sudoku site

Quote:
W-Wing 1,6 in r2c8,r7c6 connected by number 1 in r29c4 and -6 in r2c6,r7c8
or
XY-Wing 1,6,9 in r17c6,r3c5 and -6 in r2c6,r79c5
or
XY-Wing 1,5,9 in r14c6,r2c4 and -5 in r2c6
or
XYZ-Wing 1,5,6 in r2c46,r7c6 and -1 in r1c6


Ciao Gianni
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Mon Feb 05, 2018 1:00 am    Post subject: Reply with quote
There are two Type 1 URs here, if they catch your mind's eye. They will only take you so far, not to the end.
But an XY-Wing of 1-69 pivoted @r1c6 (if spotted first) will make them unnecessary.

cheers...immp
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Mon Feb 05, 2018 8:07 am    Post subject: Reply with quote
immpy wrote:
There are two Type 1 URs here, if they catch your mind's eye. They will only take you so far, not to the end.


Hi immpy,

Yes, I saw 3 types of UR, but it seemed to me that no one brought to the end;
but I could be wrong, I was disturbed by the SuperBowl LII.

Ciao Gianni
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