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Puzzle 10/01/12 (C)

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Jan 12, 2010 6:52 pm    Post subject: Puzzle 10/01/12 (C) Reply with quote
4-stepper

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

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: Wed Jan 13, 2010 1:40 am    Post subject: Reply with quote
Three steps:
Quote:
xyz-wing 138
xyz-wing 812
xy-wing 213


Two steps:
Quote:
xyz-wing 138
(1=7)r1c9-(7)r1c5=(7-4)r2c5=(4)r2c6-(4)r7c6=(4-8)r7c3=(8-3)r4c3=(3)r1c3-(3=2)r2c1-(2=1)r2c4
=> r1c456,r2c9<>1
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