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19 Mar 2017 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK
PostPosted: Sun Mar 19, 2017 10:32 am    Post subject: 19 Mar 2017 VH Reply with quote
Code:

+--------------+-------------+---------+
| 6    259  1  | 8  2359  29 | 23 4 7  |
| 47   27   3  | 14 12    6  | 8  5 9  |
| 49   8    25 | 34 2359  7  | 6  1 23 |
+--------------+-------------+---------+
| 39   1    4  | 6  39    5  | 7  2 8  |
| 3789 2579 25 | 13 12389 29 | 19 6 4  |
| 89   29   6  | 7  1289  4  | 19 3 5  |
+--------------+-------------+---------+
| 5    4    8  | 9  6     1  | 23 7 23 |
| 1    3    7  | 2  4     8  | 5  9 6  |
| 2    6    9  | 5  7     3  | 4  8 1  |
+--------------+-------------+---------+

Play this puzzle online at the Daily Sudoku site

A Sunday treat...
The nice looking X-wing on 9s (r34) eliminates the 9 in r6c1. But
to do it in one the
Quote:
139 XY wing pivot r5c4:-9r5c6
r1c6=9 stte
is the way to go (though there could be
other ways.....).

Hugh
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 870
Location: Rimini, Italy
PostPosted: Sun Mar 19, 2017 10:46 am    Post subject: Reply with quote
Hi everyone,

other possible way i see

Quote:
W-Wing with 2,9 in r1c6 and r6c2 connected by number 2 in r2c25;
XYZ-Wing with 2,5,9 in r1c2,r6c2,r3c3 and r2c2=7;
XY-Chain r6c2 - r2c2 - r2c1 - r3c1.


Ciao Gianni
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Sun Mar 19, 2017 12:37 pm    Post subject: ar 19 VH Reply with quote
129 xy wing @ R5C6, -1R6C7

Early Earl
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Mar 19, 2017 10:44 pm    Post subject: Reply with quote
Quote:
129 xy wing @ R5C6, -1R6C7


Am I blind as a bat? I can't find it.
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Tue Mar 21, 2017 1:40 pm    Post subject: VH March 19 Reply with quote
Marty,

Here is the status of the grid from which I got the 129 xy wing.
Hugh had not eliminated the 9's in x wing R3,4 and subsequent moves.

Earl


Code:

+------------+-----------+---------+
| 6  259  1  | 8  35  29 | 23 4 7  |
| 47 27   3  | 14 12  6  | 8  5 9  |
| 49 8    25 | 34 359 7  | 6  1 23 |
+------------+-----------+---------+
| 39 1    4  | 6  39  5  | 7  2 8  |
| 37 2579 25 | 13 38  29 | 19 6 4  |
| 8  29   6  | 7  12  4  | 19 3 5  |
+------------+-----------+---------+
| 5  4    8  | 9  6   1  | 23 7 23 |
| 1  3    7  | 2  4   8  | 5  9 6  |
| 2  6    9  | 5  7   3  | 4  8 1  |
+------------+-----------+---------+

Play this puzzle online at the Daily Sudoku site
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