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Set N Puzzle 41

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Mar 03, 2009 5:23 pm    Post subject: Set N Puzzle 41 Reply with quote
Maybe it's time for a change of pace.

Code:
 +-----------------------+
 | 6 . . | . 5 . | . . 4 |
 | . . 5 | 4 . 8 | . 2 3 |
 | . 8 . | . . 7 | . . 1 |
 |-------+-------+-------|
 | . 3 . | . . . | 4 . . |
 | 2 . . | . 3 . | . . . |
 | . 5 6 | . . 2 | . 8 . |
 |-------+-------+-------|
 | . . . | 8 . . | 1 . . |
 | . 1 . | . . 5 | . 4 . |
 | 5 4 3 | . . . | . . . |
 +-----------------------+

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: Tue Mar 03, 2009 5:51 pm    Post subject: Reply with quote
Quote:
Maybe it's time for a change of pace.

Faster? Slower? Military secret? Wink
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Mar 03, 2009 6:02 pm    Post subject: Reply with quote
Marty R. wrote:
Quote:
Maybe it's time for a change of pace.

Faster? Slower? Military secret? Wink

Fewer steps and needing only.

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2

Basics+: Naked Quad, Hidden Pair/Triple/Quad

VH: BUG+1, UR Type 1, X-Wing, XY-Wing
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Mar 03, 2009 6:47 pm    Post subject: Reply with quote
Thank you. I find this type of information helpful.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Tue Mar 03, 2009 7:18 pm    Post subject: Reply with quote
extended w-wing {1,9} solves it
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Mar 05, 2009 4:51 pm    Post subject: Reply with quote
I used a W-Wing on 67, followed by a pincer transport on same, then an XY-Wing on 179 with pincer transport.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Mar 06, 2009 2:20 pm    Post subject: Reply with quote
The single xy-wing <179> with pivot <17> in r1c3 did it for me.

Ted
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Fri Mar 06, 2009 3:59 pm    Post subject: Reply with quote
tlanglet wrote:
The single xy-wing <179> with pivot <17> in r1c3 did it for me.

You might wish to double-check it.

Code:
 *-----------------------------------------------------------*
 | 6     2     17    | 19    5     3     | 8     79    4     |
 | 19    79    5     | 4     16    8     | 67    2     3     |
 | 3     8     4     | 26    269   7     | 569   569   1     |
 |-------------------+-------------------+-------------------|
 | 19    3     17    | 579   8     6     | 4     57    2     |
 | 2     79    8     | 579   3     4     | 567   1     679   |
 | 4     5     6     | 179   19    2     | 3     8     79    |
 |-------------------+-------------------+-------------------|
 | 7     6     2     | 8     4     9     | 1     3     5     |
 | 8     1     9     | 3     267   5     | 267   4     67    |
 | 5     4     3     | 26    267   1     | 2679  679   8     |
 *-----------------------------------------------------------*
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Mar 06, 2009 6:48 pm    Post subject: Reply with quote
daj95376 wrote:
tlanglet wrote:
The single xy-wing <179> with pivot <17> in r1c3 did it for me.

You might wish to double-check it.

Code:
 *-----------------------------------------------------------*
 | 6     2     17    | 19    5     3     | 8     79    4     |
 | 19    7P9   5     | 4     16    8     | 67    2     3     |
 | 3     8     4     | 26    269   7     | 569   569   1     |
 |-------------------+-------------------+-------------------|
 | 1T9   3     17    | 57-9  8     6     | 4     57    2     |
 | 2     7T9   8     | 579   3     4     | 567   1     679   |
 | 4     5     6     | 179   19    2     | 3     8     79    |
 |-------------------+-------------------+-------------------|
 | 7     6     2     | 8     4     9     | 1     3     5     |
 | 8     1     9     | 3     267   5     | 267   4     67    |
 | 5     4     3     | 26    267   1     | 2679  679   8     |
 *-----------------------------------------------------------*
In reviewing my original post, I realized that I failed to include a pincer transport of the xy-wing. The <9> in the pincer at r2c2 (marked P) is transported to r4c1 via r5c2 (marked T). This eliminates the <9> in r4c4 and solves the puzzle.

Sorry about the confusion.

Ted
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