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Set NNP Puzzle 47 -- Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jan 28, 2009 9:08 pm    Post subject: Set NNP Puzzle 47 -- Advanced Reply with quote
Code:
 +-----------------------+
 | 4 . . | . . 8 | 7 1 6 |
 | . 2 . | . . . | 4 . 9 |
 | . . 6 | 1 . . | . 5 . |
 |-------+-------+-------|
 | . . 5 | 8 2 . | . . 1 |
 | . . . | 4 6 . | . 7 2 |
 | 2 . . | . . . | . . . |
 |-------+-------+-------|
 | 5 1 . | . . . | 8 . 7 |
 | 8 . 9 | . 1 . | . . . |
 | 7 3 . | 5 8 . | 1 . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings

Can be solved using steps from ...

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, XYZ-Wing

VH+: 2-String Kite, Empty Rectangle, Remote Pair, Skyscraper, Colors, UR Type 2

Advanced: finned/Sashimi X-Wing, Multiple Colors, Swordfish, M-Wing, W-Wing, XY-Chain

Extreme: Jellyfish, (but mostly) Chain
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Wed Jan 28, 2009 9:59 pm    Post subject: Reply with quote
Code:
.---------------------.---------------------.---------------------.
| 4      5      3     | 2      9      8     | 7      1      6     |
| 1      2      78    | 36     57     3567  | 4      38     9     |
| 9      78     6     | 1      4      37    | 2      5      38    |
:---------------------+---------------------+---------------------:
| 6      479    5     | 8      2      379   | 39     34     1     |
| 3      89     18    | 4      6      159   | 59     7      2     |
| 2      479    17    | 39     57     13579 | 6      348    358   |
:---------------------+---------------------+---------------------:
| 5      1      4     | 69     3      2     | 8      69     7     |
| 8      6      9     | 7      1      4     | 35     2      35    |
| 7      3      2     | 5      8      69    | 1      69     4     |
'---------------------'---------------------'---------------------'

x-wing 7
chain... (5=7)r6c5 - (7)r6c3 = (7)r2c3 - (7=8)r3c2 - (8=3)r3c9 - (3)r8c9 = (3-5)r8c7 = (5)r5c7; r5c6 <> 5
BUG+1 places 3 in r6c8
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wapati



Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
PostPosted: Fri Jan 30, 2009 4:11 pm    Post subject: Reply with quote
I couldn't avoid doing this as an advanced either.

My best was an ER on 3s followed by a 4 cell xy-chain eliminating some 7s.

It was fun trying ! Smile
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Feb 06, 2009 5:51 pm    Post subject: Reply with quote
I used an XYZ-Wing on 379, ERs on 7 and 3, two X-Wings on 7 and an XY-Chain.
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