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Set N Puzzle 1

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Tue Jan 06, 2009 10:33 pm    Post subject: Set N Puzzle 1 Reply with quote

Code:
 +-----------------------+
 | . . . | . . . | 8 . 6 |
 | . 2 . | . . . | 1 4 . |
 | . . 6 | . . . | . 5 2 |
 |-------+-------+-------|
 | . . . | 6 . . | 4 . 1 |
 | . . . | . . 3 | . 6 . |
 | . . . | . 1 . | . 2 8 |
 |-------+-------+-------|
 | 5 4 . | 1 . . | . . 9 |
 | . 6 2 | . 4 7 | . . 5 |
 | 1 . 7 | 2 . 9 | 6 8 . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== =====

Can be solved with ...

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

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

VH: BUG+1, Remote Pair, UR Type 1, X-Wing, XY-Wing

Advanced: 2-String Kite, Empty Rectangle, Skyscraper, UR Type 2, XYZ-Wing

Extreme: finned X-Wing, M-Wing, W-Wing, XY-Chain

Extreme+: Swordfish, Jellyfish, (but mostly) Chain
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Marty R.



Joined: 12 Feb 2006
Posts: 5181
Location: Rochester, NY, USA

PostPosted: Wed Jan 07, 2009 2:08 am    Post subject: Reply with quote

This was my first "N" puzzle, which I believe is solvable with one step. Alas, it took me two: an ER and XY-Wing. Embarassed
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Wed Jan 07, 2009 4:33 am    Post subject: Reply with quote

Marty R. wrote:
... which I believe is solvable with one step.

The first few introductory puzzles had single-stepper solutions!

Most of the Set N puzzles need multiple VH steps. A few will be marked as needing an Advanced step as well.

Your Advanced ER step bypassed at least two VH steps in this puzzle. That's perfectly acceptable!
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cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Wed Jan 07, 2009 1:15 pm    Post subject: Reply with quote

Quote:
Alas, it took me two

Alas, it took me 6 - two URs, two ERs, two xy wings

Could someone please post a quick reply. I now show up on all three topics (daily, others and DAJ) - looks like there's only me doing them.
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wapati



Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.

PostPosted: Wed Jan 07, 2009 2:20 pm    Post subject: Reply with quote

Shortest path I see is an xy-wing and also one of ER, skyscraper, kite or second xy-wing. There is an obvious UR but it doesn't solve much.
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