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Salsa #4 -- Advanced

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Sat Jan 31, 2009 1:17 pm    Post subject: Salsa #4 -- Advanced Reply with quote

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

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 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: Sat Jan 31, 2009 8:19 pm    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 1      6      7     | 238    238    4     | 5      9      238   |
| 5      8      29    | 1      67     239   | 67     4      23    |
| 3      29     4     | 5      67     289   | 1678   1678   128   |
:---------------------+---------------------+---------------------:
| 89     4      1     | 7      2389   6     | 38     238    5     |
| 6      39     5     | 2389   1      238   | 4      238    7     |
| 2      7      38    | 4      38     5     | 16     16     9     |
:---------------------+---------------------+---------------------:
| 7      23     2368  | 2368   5      1238  | 9      138    4     |
| 4      5      23689 | 23689  2389   1238  | 1378   1378   18    |
| 89     1      389   | 389    4      7     | 2      5      6     |
'---------------------'---------------------'---------------------'

skyscraper on 9 removes 9 from r9c4 and r8c3
w-wing {3,8}... (3=8)r9c4 - (8)r9c1 = (8)r4c1 - (8=3)r6c3; r9c3 <> 3
extended w-wing {2,3}...w-wing is in red...
(8=3)r6c5 - (3)r1c5 = (3)r2c6 -
(3=2)r2c9 - (2)r2c3 = (2)r3c2 - (2=3)r7c2 - (3)r5c2 = (3)r6c3; r6c3 <> 8
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Wed Feb 04, 2009 4:45 pm    Post subject: Reply with quote

This was one of those bend-but-don't break puzzles that I enjoy. I used an assortment of moves with the finishing blow being a W-Wing with pincer transport.
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