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Set XY_01 Puzzle 8

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Thu Mar 26, 2009 10:56 am    Post subject: Set XY_01 Puzzle 8 Reply with quote

Code:
 +-----------------------+
 | . 3 . | . . . | . 6 . |
 | 6 2 . | . . 5 | . 3 4 |
 | . . 4 | 3 . . | . . 2 |
 |-------+-------+-------|
 | . . 6 | . 4 . | . 2 . |
 | . . . | 6 7 . | . . . |
 | . 5 . | . . 3 | . 7 . |
 |-------+-------+-------|
 | . . . | . . . | 8 5 . |
 | 9 8 . | 7 . 2 | 6 . . |
 | . 6 5 | . . . | . . 9 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Fri Mar 27, 2009 1:23 am    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 158    3      789   | 12489  1289   14789 | 1579   6      18    |
| 6      2      789   | 189    189    5     | 179    3      4     |
| 158    19     4     | 3      1689   16789 | 1579   89     2     |
:---------------------+---------------------+---------------------:
| 138    7      6     | 5      4      189   | 139    2      18    |
| 234    19     23    | 6      7      189   | 34     89     5     |
| 148    5      89    | 1289   1289   3     | 149    7      6     |
:---------------------+---------------------+---------------------:
| 23     4      23    | 19     169    169   | 8      5      7     |
| 9      8      1     | 7      5      2     | 6      4      3     |
| 7      6      5     | 48     3      48    | 2      1      9     |
'---------------------'---------------------'---------------------'

UR 23
x-wing 9
xy-wing removes 1 from r1c1
w-wing {7,9} strong link on 7 in row 3, removes 9 from r2c49 and r1c7
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Fri Mar 27, 2009 1:55 am    Post subject: Reply with quote

storm_norm wrote:
Code:
.---------------------.---------------------.---------------------.
| 158    3      789   | 12489  1289   14789 | 1579   6      18    |
| 6      2      789   | 189    189    5     | 179    3      4     |
| 158    19     4     | 3      1689   16789 | 1579   89     2     |
:---------------------+---------------------+---------------------:
| 138    7      6     | 5      4      189   | 139    2      18    |
| 234    19     23    | 6      7      189   | 34     89     5     |
| 148    5      89    | 1289   1289   3     | 149    7      6     |
:---------------------+---------------------+---------------------:
| 23     4      23    | 19     169    169   | 8      5      7     |
| 9      8      1     | 7      5      2     | 6      4      3     |
| 7      6      5     | 48     3      48    | 2      1      9     |
'---------------------'---------------------'---------------------'

UR 23
x-wing 9
xy-wing removes 1 from r1c1
w-wing {7,9} strong link on 7 in row 3, removes 9 from r2c49 and r1c7

I was able to follow you up to the W-Wing.

Code:
 *-----------------------------------------------------------*
 | 58    3     789   | 4     2     179   | 1579  6     18    |
 | 6     2     789   | 19    189   5     | 179   3     4     |
 | 158   19    4     | 3     68    67    | 57    89    2     |
 |-------------------+-------------------+-------------------|
 | 3     7     6     | 5     4     89    | 19    2     18    |
 | 4     19    2     | 6     7     18    | 3     89    5     |
 | 18    5     89    | 2     19    3     | 4     7     6     |
 |-------------------+-------------------+-------------------|
 | 2     4     3     | 19    169   169   | 8     5     7     |
 | 9     8     1     | 7     5     2     | 6     4     3     |
 | 7     6     5     | 8     3     4     | 2     1     9     |
 *-----------------------------------------------------------*
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Fri Mar 27, 2009 2:05 am    Post subject: Reply with quote

ok, before the w-wing {7,9}
is the w-wing {1,8} that I omitted,
strong links on 8's in box 6, removes 1 from r1c6
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Thu Apr 02, 2009 4:55 am    Post subject: Reply with quote

I used the UR, the X-Wing and three XY-Wings, two of which required pincer transport.
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