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Puzzle 10/03/18

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Thu Mar 18, 2010 4:30 pm    Post subject: Puzzle 10/03/18 Reply with quote
Code:
 +-----------------------+
 | 5 8 7 | . . 2 | . 1 . |
 | 4 . . | . . . | . . 2 |
 | 3 . 2 | . . . | 7 . 8 |
 |-------+-------+-------|
 | . . . | 3 . . | . . . |
 | . . . | . 8 1 | . . . |
 | 7 . . | . 4 6 | 2 . 1 |
 |-------+-------+-------|
 | . . 4 | . . 8 | . . . |
 | 6 . . | . . . | . 3 4 |
 | . 3 8 | . . 4 | . 2 5 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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Mogulmeister



Joined: 03 May 2007
Posts: 1151
PostPosted: Thu Mar 18, 2010 6:30 pm    Post subject: Reply with quote
Quote:
Instead of the X-wing on 5s, there is an AIC which eliminates the 9 in r9c1 pincers at r5c1 and r9c5

(9=2)r5c1-r5c4=(2-5)r4c5=r3c5-r3c6=(5-9)r8c6=(9)r9c5
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Mar 19, 2010 3:27 pm    Post subject: Reply with quote
I used an X-Wing (5), flightless XY-Wing (569) and an XY-Chain.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Fri Mar 19, 2010 8:50 pm    Post subject: Reply with quote
I found an ALS 259 in r67c2 that made a deletion but while looking for another possible deletion, I found a conflicting chain that solved the puzzle in one step.

(2)r5c1 - r5c4 = (2-5)r4c5 = r3c5 - (5=9)r3c6 - r8c6 = r8c3 - r79c1 = r5c1: r5c1<>2.

Ted
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Mogulmeister



Joined: 03 May 2007
Posts: 1151
PostPosted: Fri Mar 19, 2010 9:20 pm    Post subject: Reply with quote
We went down similar routes Ted. Smile
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Wendy W



Joined: 04 Feb 2008
Posts: 144
PostPosted: Fri Mar 19, 2010 9:59 pm    Post subject: Reply with quote
X-wing on 5; two separate skyscrapers, both on 9; XY-wing 129.
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