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NoName Puzzle 16 -- Advanced

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daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Thu Feb 12, 2009 12:37 am Post subject: NoName Puzzle 16 -- Advanced

Code:

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

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== Ratings are Accumulative

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

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Thu Feb 12, 2009 8:03 am Post subject:

Code:

.---------------------.---------------------.---------------------.
| 1235 1235 9 | 7 6 135 | 13 8 4 |
| 135 6 15 | 234 8 13459 | 139 1239 7 |
| 4 7 8 | 23 29 139 | 5 6 1239 |
:---------------------+---------------------+---------------------:
| 8 235 57 | 1 279 379 | 4 379 6 |
| 139 134 6 | 8 5 3479 | 2 1379 139 |
| 1239 1234 147 | 234 2479 6 | 1379 5 8 |
:---------------------+---------------------+---------------------:
| 15 145 2 | 6 3 47 | 8 179 159 |
| 7 8 35 | 9 1 2 | 6 4 35 |
| 6 9 134 | 5 47 8 | 137 1237 123 |
'---------------------'---------------------'---------------------'

Quote:

x-wing 7
x-wing 4
generalized M-wing {4,7} removes 7 from r4c5
lots of basics...
xy-wing removes 1 from r5c1 to finish it.

wapati

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

Posted: Thu Feb 12, 2009 1:44 pm Post subject:

I mostly followed Norm's path. Where he does an M-wing I do an xy-chain to remove 1 from r9c3 and then another xy-chain to remove the same 7 that he does. All else the same.

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