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Puzzle NR 09/12/23

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Dec 23, 2009 4:20 pm    Post subject: Puzzle NR 09/12/23 Reply with quote
Last puzzle from the current NR file.

Code:
 +-----------------------+
 | 5 9 . | 7 . 4 | . . 8 |
 | 7 3 2 | . . 1 | 5 . . |
 | . 4 . | . 2 . | . . . |
 |-------+-------+-------|
 | 2 . . | . . 7 | 8 . . |
 | . . 7 | . 8 . | 9 . . |
 | 8 5 . | 9 . 2 | 7 . . |
 |-------+-------+-------|
 | . 2 . | 4 7 8 | . . 9 |
 | . . . | . . . | . . . |
 | 4 . . | . . . | 1 . . |
 +-----------------------+

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 Dec 23, 2009 10:35 pm    Post subject: Reply with quote
A short fun puzzle.
Quote:
UR 16. To prevent the DP, r4c4=3 or r5c4=5. Thus, UR16[(3)r4c4 = (5)r5c4]r45c24 - (5=6)r5c6 - (6=3)r8c6; r89c4<>3
type 2 UR 78 in r89c28 deletes 2 in r5c8, r89c9
x-wing 6 in r37c17,
BUG+3 forces r7c7=6 to complete the puzzle.

Ted Very Happy
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Wed Dec 23, 2009 11:27 pm    Post subject: Reply with quote
I used two steps:
Quote:
w-wing 36
x-wing 6
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Dec 24, 2009 5:26 am    Post subject: Reply with quote
X-Wing (6)
Type 3 UR (16)
W-Wing (36)
Type 1 UR (36)
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Thu Dec 24, 2009 5:33 am    Post subject: Reply with quote
UR type 2 {78} r89c28
UR type 1 {36} r89c36
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