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Set G Puzzle 64

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Fri Dec 19, 2008 10:16 pm    Post subject: Set G Puzzle 64 Reply with quote
Code:
 +-----------------------+
 | 5 . . | 2 . . | . 4 9 |
 | . . . | . 4 . | . . . |
 | . . 4 | 3 9 . | . 1 . |
 |-------+-------+-------|
 | 8 . 6 | 4 . . | . . 2 |
 | . 5 3 | . 2 . | 4 . . |
 | . . . | . . 3 | . 6 . |
 |-------+-------+-------|
 | . . . | . 6 . | . 8 . |
 | 1 . 5 | . . 4 | 9 7 6 |
 | 6 . . | 1 . . | . 2 4 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Dec 20, 2008 12:59 am    Post subject: Reply with quote
This is another one I had to chip away at. Five ERs, kite, simple coloring, couple of X-Wings and a W-Wing to finish it off.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sat Dec 20, 2008 6:30 am    Post subject: Reply with quote
Code:
.---------------------.---------------------.---------------------.
| 5      3678   178   | 2      178    1678  | 3678   4      9     |
| 39     36789  1789  | 57     4      15678 | 2      35     3578  |
| 2      678    4     | 3      9      5678  | 5678   1      578   |
:---------------------+---------------------+---------------------:
| 8      19     6     | 4      157    1579  | 1357   35     2     |
| 7      5      3     | 6      2      18    | 4      9      18    |
| 49     149    2     | 579    1578   3     | 1578   6      1578  |
:---------------------+---------------------+---------------------:
| 349    3479   79    | 579    6      2     | 135    8      135   |
| 1      2      5     | 8      3      4     | 9      7      6     |
| 6      3789   789   | 1      57     579   | 35     2      4     |
'---------------------'---------------------'---------------------'

I couldn't find a way around the x-wing on 3, but all I needed was the elimination of 3 in r2c8 from it.
1. x-wing on 3
2. (9=3)r2c1 - (3)r7c1 = (3)r9c2 - (3=5)r9c7 - (5)r9c5 = (5-9)r7c4 = (9)r6c4; r6c1 <> 9
3. xy- wing (5,7,9)... (5=9)r6c4 - (9=7)r4c6 - (7=5)r4c7; r6c9 <> 5.
singles.
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