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Set NNP Puzzle 88

 
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Tue Jan 20, 2009 9:48 am    Post subject: Set NNP Puzzle 88 Reply with quote

Set No_Name_Please Embarassed

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

Play this puzzle online at the Daily Sudoku site

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

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, 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, Multiple Colors, M-Wing, W-Wing, XY-Chain

VH+AE: multi-step VH plus one Advanced and/or one Extreme step.

Extreme+: Swordfish, Jellyfish, (but mostly) Chain
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Tue Jan 20, 2009 8:40 pm    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 8      13     9     | 36     5      4     | 2      7      136   |
| 4      13     7     | 3689   2369   23689 | 36     1369   5     |
| 5      6      2     | 1      7      39    | 8      39     4     |
:---------------------+---------------------+---------------------:
| 1      89     5     | 2      36     3678  | 367    4      369   |
| 2      89     6     | 3578   4      13578 | 357    138    139   |
| 7      4      3     | 5689   169    15689 | 56     168    2     |
:---------------------+---------------------+---------------------:
| 9      2      1     | 57     8      57    | 4      36     36    |
| 6      5      8     | 4      139    139   | 19     2      7     |
| 3      7      4     | 69     1269   1269  | 19     5      8     |
'---------------------'---------------------'---------------------'

w-wing {3,6} in rows 1 and 2 eliminates a number of 6's in rows 1 and 2
leaves this grid
Code:
.---------------------.---------------------.---------------------.
| 8      13     9     | 6      5      4     | 2      7      13    |
| 4      13     7     |L38     239    2389  |L36     1369   5     |
| 5      6      2     | 1      7      39    | 8      39     4     |
:---------------------+---------------------+---------------------:
| 1      89     5     | 2      36     3678  | 367    4      369   |
| 2      89     6     | 3578   4      13578 | 357    138    139   |
| 7      4      3     |L58     169    15689 |L56     168    2     |
:---------------------+---------------------+---------------------:
| 9      2      1     | 57     8      57    | 4      36     36    |
| 6      5      8     | 4      13     13    | 9      2      7     |
| 3      7      4     | 9      26     26    | 1      5      8     |
'---------------------'---------------------'---------------------'

the marked xy-loop makes a number of eliminations. it eliminates all other 3's in row 2
6's in column 7
5's in r6
8's in column 4

after the dust settles, a xyz-wing finishes it
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Marty R.



Joined: 12 Feb 2006
Posts: 5180
Location: Rochester, NY, USA

PostPosted: Wed Jan 21, 2009 5:59 am    Post subject: Reply with quote

I used two W-Wings on 36 (different pairs), a Finned X-Wing on 3 and a Type 2 UR on 57 finished it off.
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