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Set L Puzzle 58

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Feb 28, 2009 4:19 pm    Post subject: Set L Puzzle 58 Reply with quote
Code:
 +-----------------------+
 | 6 . . | 3 . . | . . . |
 | . 4 9 | . . . | . . . |
 | . 3 8 | 1 9 5 | . . . |
 |-------+-------+-------|
 | 9 . 1 | . . . | 8 . 3 |
 | . . 6 | . 8 . | . . . |
 | . . 4 | . . 6 | 9 . . |
 |-------+-------+-------|
 | . . . | 4 . 7 | 1 . 8 |
 | . . . | . . . | . 3 . |
 | . . . | 5 . . | 4 . 9 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Mar 01, 2009 6:36 am    Post subject: Reply with quote
Code:
.------------------.------------------.------------------.
| 6     257   25   | 3     4     8    | 27    9     1    |
| 1     4     9    | 6     7     2    | 3     8     5    |
| 27    3     8    | 1     9     5    | 267   47    2467 |
:------------------+------------------+------------------:
| 9     27    1    | 27    5     4    | 8     6     3    |
| 2357  257   6    | 9     8     13   | 257   1457  247  |
| 35    8     4    | 27    13    6    | 9     15    27   |
:------------------+------------------+------------------:
| 25    9     3    | 4     6     7    | 1     25    8    |
| 4     1     57   | 8     2     9    | 567   3     67   |
| 8     6     27   | 5     13    13   | 4     27    9    |
'------------------'------------------'------------------'

going to rotate this puzzle around two candidates.
w-wing {2,7} removes 7 from r3c8

extended that same w-wing to eliminate the 7 in r3c7...
(7=2)r3c1 - (2)r7c1 = (2)r9c3 - (2=7)r9c8 - (7=6)r8c9 - (6)r8c7 = (6)r3c7; r3c7 <> 7

w-wing extended {2,7} in r6c9 and r4c2 to eilminate the 7 in r3c9
(7=2)r6c9 - (2)r6c4 = (2)r4c4 - (2=7)r4c2 - (7)r1c2 = (7)r1c7; r3c9 <> 7

xyz-wing finishes {2,3,5} in box4. removes 5 from r5c2.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Tue Mar 03, 2009 5:32 pm    Post subject: Reply with quote
I worked with <257>. Started with a "flightless" xy-wing<257> but two extensions provided deletions, a x-wing<5>, a kite<7>, a flightless w-wing<27> with an extension , and finally another xy-wing<257>.

Fun Smile

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Mar 05, 2009 1:04 am    Post subject: Reply with quote
I couldn't find any of the W-Wings on 27. I used a bunch of moves starting with a UR and ending with a W-Wing on 25.
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