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Puzzle NR_002

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Apr 28, 2009 9:42 am    Post subject: Puzzle NR_002 Reply with quote
Code:
 +-----------------------+
 | 4 3 7 | 8 . . | 1 . 9 |
 | 9 8 . | . . 6 | . . . |
 | 5 . 6 | . . . | . . 8 |
 |-------+-------+-------|
 | 6 . . | 5 . 7 | . . . |
 | . . . | . 8 . | 9 . 6 |
 | . 9 . | 6 . 1 | 7 . . |
 |-------+-------+-------|
 | 8 . . | . 2 9 | . 1 7 |
 | . . . | . . . | 8 . . |
 | 1 . 9 | . 6 . | 2 . . |
 +-----------------------+

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: Tue Apr 28, 2009 1:23 pm    Post subject: Reply with quote
I don't think I have ever seen so many identical bivalue cells and opportunities for same three digits in an xy-wing.

I did solve the puzzle as follows:
Quote:
Remote Pair 34 deletes both digits from r5c8, making it a 5,
xy-wing 234 with pivot 24 at r6c9 deletes 3 at r8c1, but transporting the 3 from r6c1 to r4c8 also deletes the 3 from r9c8 and completes the puzzle.

Definitely a different, fun puzzle for me........

Ted
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Tue Apr 28, 2009 1:47 pm    Post subject: Reply with quote
A monster! Shocked
Quote:
easily spotted the remote pair then struggled through an x-wing and a kite followed by a w-wing 43 by 3 and
a jelly 4 which cracked it.
Hope someone sees an easier path
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat May 02, 2009 12:35 am    Post subject: Reply with quote
I used a few XY-Wings, including pincer transport, Remote Pairs, two simple colorings and what I think some call a Mixed W-Wing.
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