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Freep Thursday April 16, 2009

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Thu Apr 16, 2009 10:28 pm    Post subject: Freep Thursday April 16, 2009 Reply with quote
Usually, only basics are required. Not this one!
Code:
Puzzle: FP041609
+-------+-------+-------+
| . . 6 | . 7 . | . . 2 |
| . . 8 | . 4 . | 9 . . |
| . 9 . | 2 . . | . 8 . |
+-------+-------+-------+
| . 7 . | . . 6 | . . . |
| 5 . . | 3 . 7 | . . 8 |
| . . . | 1 . . | . 7 . |
+-------+-------+-------+
| . 6 . | . . 1 | . 2 . |
| . . 9 | . 3 . | 5 . . |
| 7 . . | . 6 . | 8 . 4 |
+-------+-------+-------+

Sudoku Susser takes five chains and two XY-wings! There is a simpler way!

Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Thu Apr 16, 2009 11:05 pm    Post subject: Reply with quote
Quote:
coloring 9's
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Thu Apr 16, 2009 11:35 pm    Post subject: Reply with quote
I found a one step solution also that was similar but different that Norm.
Quote:
A Kraken x-wing on <9> in r19c46 with fin in r9c8 that deletes <9> in r6c6.

Ted
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Fri Apr 17, 2009 12:11 am    Post subject: Reply with quote
I found Norm's solution. The coloring deletes <9> in R7C5, as I recall.

Keith
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