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Set XY_03 Puzzle 006

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Mon May 25, 2009 8:02 am    Post subject: Set XY_03 Puzzle 006 Reply with quote

You May Need wrote:
[r2c7]<>6 ... to get around the advanced fish

Code:
 +-----------------------+
 | 1 . . | 8 . . | 5 . . |
 | . 3 5 | . . 2 | . 9 . |
 | . 9 . | . . . | . . 3 |
 |-------+-------+-------|
 | 5 . . | 1 . . | . . . |
 | . . . | . 7 8 | . 5 . |
 | . 2 . | . 5 9 | . . 8 |
 |-------+-------+-------|
 | 7 . . | . . . | 2 8 . |
 | . 1 . | . 2 . | 7 . 5 |
 | . . 2 | . . 5 | . 6 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

Note: This XY puzzle doesn't need an XY-Chain ... or any chain for that matter.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Mon May 25, 2009 3:40 pm    Post subject: Reply with quote

My first move was an Up/Down skyscraper on 6 in r4c69 with a extended pincer on 6: r8c6 - r8c1 = r2c1 - r1c3 = r1c9; r1c9=6; r23c7<>6
(Danny, after completing the puzzle, I checked your hint and discovered it was about this deletion. Interesting!)
The remainder of my moves were:
Quote:
multi-coloring 6,
kite 9,
xy-wing 134,
w-wing 34,
kite 3.

Ted
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

PostPosted: Mon May 25, 2009 4:44 pm    Post subject: Reply with quote

Ted,

Isn't your 2nd step "multicoloring" just another extension on the first step skyscraper? Confused
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Mon May 25, 2009 5:28 pm    Post subject: Reply with quote

[Withdrawn: rambling!]

Last edited by daj95376 on Tue May 26, 2009 3:51 pm; edited 1 time in total
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Tue May 26, 2009 12:22 am    Post subject: Reply with quote

arkietech wrote:
Ted,

Isn't your 2nd step "multicoloring" just another extension on the first step skyscraper? Confused


Dan, it is a holiday in the US and I have been celebrating, but I do not see how the multi-coloring is a extension of the skyscraper. I see how many of the same cells are involved, but I do not see how to "walk the chain" to make the deletion without the multi-coloring aspect. Please provide details.

Ted
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