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Set J Puzzle 88 -- VH+

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Sat Feb 21, 2009 12:04 pm    Post subject: Set J Puzzle 88 -- VH+ Reply with quote

Last puzzle in this set.

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

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, finned/Sashimi X-Wing

Advanced: Multiple Colors, Swordfish, M-Wing, W-Wing, XY-Chain

Extreme: Jellyfish, (but mostly) Chain
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wapati



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

PostPosted: Sat Feb 21, 2009 3:32 pm    Post subject: Reply with quote

I used a skyscraper and an xyz.

I saw a finned swordfish ( and a 2-string-kite) that also works as a first step but the xyz is still needed after. Here is the big fish. The kite does this same elimination, a different one than the sky does, BTW.

Code:
.-----------------.-------------.-----------------.
| 1    8     59   | 7    59  2  | 3     4     6   |
| 3    246   24   | 8    59  16 | 25   #1259  7   |
|*59   26    7    | 3    4   16 | 258  *1259  58-9|
:-----------------+-------------+-----------------:
| 2    59    3    | 1    8   7  | 4     6     59  |
| 8    1     6    |*59   2   4  | 7    *59    3   |
|*459  7     459  |*59   6   3  | 1     8     2   |
:-----------------+-------------+-----------------:
| 45   3     1    | 246  7   9  | 2568  25    58  |
| 7    29    8    | 26   1   5  | 269   3     4   |
| 6    2459  2459 | 24   3   8  | 259   7     1   |
'-----------------'-------------'-----------------'


The sword makes this my favorite of the ones posted today. Very Happy
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sun Feb 22, 2009 6:52 am    Post subject: Reply with quote

Code:
.------------------.------------------.------------------.
| 1     8     59   | 7     59    2    | 3     4     6    |
| 3     246   24   | 8     59    16   | 25    1259  7    |
| 59    26    7    | 3     4     16   | 258   1259  589  |
:------------------+------------------+------------------:
| 2     59    3    | 1     8     7    | 4     6     59   |
| 8     1     6    | 59    2     4    | 7     59    3    |
| 459   7     459  | 59    6     3    | 1     8     2    |
:------------------+------------------+------------------:
| 45    3     1    | 246   7     9    | 2568  25    58   |
| 7     29    8    | 26    1     5    | 269   3     4    |
| 6     2459  2459 | 24    3     8    | 259   7     1    |
'------------------'------------------'------------------'

this chain also takes care of it in one step.
(5=2)r2c7 - (2)r2c3 = (2)r9c3 - (2=9)r8c2 - (9)r8c7 = (9)r9c7; r9c7 <> 5
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Marty R.



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

PostPosted: Sun Feb 22, 2009 11:28 pm    Post subject: Reply with quote

Two W-Wings on different pairs of 59 cells and an XYZ-Wing on 245 to finish.
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