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Puzzle 10/02/05 (A)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Fri Feb 05, 2010 7:36 am    Post subject: Puzzle 10/02/05 (A) Reply with quote
Code:
 +-----------------------+
 | 4 . . | . . 5 | . . 7 |
 | . . . | . . . | . . . |
 | . . 2 | 1 7 . | . . . |
 |-------+-------+-------|
 | . . 7 | . 2 1 | . . 9 |
 | . . 1 | 7 9 . | 2 . 6 |
 | 2 . . | 5 . 6 | 7 . 1 |
 |-------+-------+-------|
 | . . . | . 3 2 | 6 . 5 |
 | . . . | . . . | . 9 . |
 | 5 . . | 9 1 7 | 3 . 2 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Fri Feb 05, 2010 2:52 pm    Post subject: Reply with quote
I used 3 steps:
Quote:
skyscraper 4
x-wing 4
w-wing 48
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Feb 05, 2010 5:02 pm    Post subject: Reply with quote
One step.

A useless/flightless Remote Pair 48: r7c4, r8c6, r8c9 & r9c8. However both the 4 & 8 in r9c8 can be extended to r4c7:
(4)r9c8 - (4)r456c8 = (4)r4c7,
(8)r9c8 - (8)r456c8 = (8)r4c7.
Thus 48 is deleted in r4c4 to complete the puzzle.

I assume this pattern could also be viewed as a w-wing 48 in r4c7 & r7c4 with a kite in box9 acting as the strong link for both 4 & 8.
However it is viewed, it did the deed.

Ted
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Fri Feb 05, 2010 5:56 pm    Post subject: Reply with quote
tlanglet wrote:
Thus 48 is deleted in r4c4 to complete the puzzle.

Beautiful! Very Happy
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Feb 05, 2010 11:10 pm    Post subject: Reply with quote
For me it was a flightless W-Wing (48) in r4c7 and r8c4 with pincer transport, deleting the 8 from r4c4.
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