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Puzzle 10/01/29 (C)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Sat Jan 30, 2010 1:13 am    Post subject: Puzzle 10/01/29 (C) Reply with quote

Something to chew on!

Code:
 +-----------------------+
 | 6 1 . | . . 3 | . . . |
 | 9 8 3 | 4 5 . | . 1 . |
 | . 5 4 | 1 . . | 3 . . |
 |-------+-------+-------|
 | . 2 1 | 8 3 . | . . . |
 | . 4 . | 7 . . | 2 3 . |
 | 3 . . | . . 4 | . . . |
 |-------+-------+-------|
 | . . 7 | . 4 . | 5 . . |
 | . 6 . | . 7 . | . 9 . |
 | . . . | . . . | . . 4 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

PostPosted: Sat Jan 30, 2010 3:03 pm    Post subject: Reply with quote

I used:
Quote:
xy-wing 765
w-wing 69
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tlanglet



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

PostPosted: Sun Jan 31, 2010 2:16 pm    Post subject: Reply with quote

This puzzle took me for a walk in the country.

xy-wing -567 with vertex in r4c9,

an unusual flightless xyz-wing 1-69 in r5c5:
(1)r5c5 - (1=6)r5c9 - r5c3 = r6c3; r6c5<>6,
(6)r5c5; r6c5<>6,
(9)r5c5 - (6)r4c6; r6c5<>6.,

xy-wing -369 with vertex in r9c5,
ER 6,
W-wing 69.

After reading the post by Dan, I realize I had three useless steps but one was different and fun.

Ted
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