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"Hard"

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Jun 28, 2008 7:51 pm    Post subject: "Hard" Reply with quote
By the rating scale used for this site's puzzles, this is a "hard", except for the last step.
Code:
Puzzle: M5909304sh(6)
+-------+-------+-------+
| 1 9 . | . 5 . | 3 . . |
| . 3 . | . . 8 | . . 7 |
| . 8 . | . . . | . . . |
+-------+-------+-------+
| . 6 . | . . . | . . 2 |
| 5 . . | . 1 . | . 4 . |
| 2 . . | . . 9 | . 7 3 |
+-------+-------+-------+
| . . . | . 2 4 | . 9 8 |
| . . 7 | . . . | . . . |
| . . . | . 6 3 | . . . |
+-------+-------+-------+
Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Jun 29, 2008 1:05 am    Post subject: Reply with quote
This grid seemed to be pretty cluttered for a (6) rating. Nevertheless, basics led to a BUG+1 pattern. There was also a W-Wing, two XY-Wings with pincer coloring and an M-Wing with pincer coloring, after which I stopped looking. I used the last one mentioned because it registered the highest on my fun meter.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Jun 29, 2008 5:54 am    Post subject: Reply with quote
Code:
.---------------.---------------.---------------.
| 1    9    6   | 2    5    7   | 3    8    4   |
| 4    3    5   | 1    9    8   | 2    6    7   |
| 7    8    2   | 4    3    6   | 19   5    19  |
:---------------+---------------+---------------:
|#39   6    4   | 38   7    5   |8-9   1    2   |
| 5    7    39  | 38   1    2   | 689  4   #69  |
| 2    1    8   | 6    4    9   | 5    7    3   |
:---------------+---------------+---------------:
| 36   5    13  | 7    2    4   | 16   9    8   |
|#69   2    7   | 59   8    1   | 4    3   #56  |
| 8    4    19  | 59   6    3   | 7    2    15  |
'---------------'---------------'---------------'


m-wing on {6,9} marked stong links on 6 the 9 is eliminated in r4c7
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