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Puzzle 10/03/16

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Tue Mar 16, 2010 4:33 pm    Post subject: Puzzle 10/03/16 Reply with quote

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

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Wed Mar 17, 2010 2:31 am    Post subject: Reply with quote

Two steps.

Quote:
Two perspectives of the same UR 36 in 23c68:
Looking in row2, no outside digits 3 or 6 exist,
Looking in row 3, only the 6 in r3c3,
Thus r3c3 must be 6 to prevent the deadly pattern.

or

x-wing on 3 overlay on the UR deletes 6 in r3c68 thereby forcing r3c3=6.

An ER on 5 with hinge in box 4 and strong link in r36c6 completes the puzzle.

Ted
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Marty R.



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

PostPosted: Wed Mar 17, 2010 3:32 pm    Post subject: Reply with quote

I'm sure I had unnecessary moves because there was a quad or quint which went unseen for quite a while.

M-Wing (59)
Kite (9)
ER (4)
Type 4 UR (36)
Coloring (5)
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Wendy W



Joined: 04 Feb 2008
Posts: 144

PostPosted: Wed Mar 17, 2010 8:29 pm    Post subject: Reply with quote

First thing I spotted was X-wing on 4. Then I had to do something with those 59 doubles all over the grid, so I ran two chains. That left me with XYZ-wing 145, XY-wing 159 and finally XYZ-wing 145 for the win. Phew!
Hope all of you are enjoying wonderful spring weather like we are here in Pennsylvania!
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