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Jun 20 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Sat Jun 20, 2015 10:35 am    Post subject: Jun 20 VH Reply with quote

After Basics:
Code:

+----------+----------+------------+
| 46  8 59 | 67  1 57 | 2  3   459 |
| 36  1 59 | 236 4 35 | 8  569 7   |
| 346 2 7  | 36  9 8  | 16 156 45  |
+----------+----------+------------+
| 7   4 2  | 9   3 1  | 5  8   6   |
| 1   3 8  | 4   5 6  | 7  29  29  |
| 5   9 6  | 8   7 2  | 3  4   1   |
+----------+----------+------------+
| 8   7 3  | 1   6 4  | 9  25  25  |
| 2   6 1  | 5   8 9  | 4  7   3   |
| 9   5 4  | 37  2 37 | 16 16  8   |
+----------+----------+------------+

Play this puzzle online at the Daily Sudoku site

A 'classic' solution:
Quote:
X-Wing on 5 c36 followed by 496
XY-wing pivot r2c8
Alternative is the one-step UR on 16....
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kuskey



Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH

PostPosted: Sat Jun 20, 2015 3:09 pm    Post subject: Jun 20 VH Reply with quote

A T1UR in 16 in r39 will do it in one step.
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Sat Jun 20, 2015 3:14 pm    Post subject: Reply with quote

Hey Hugh, you missed the basic locked 5's in row 3 which eliminates the 5 from r1c9 and r2c8 leaving the one-step XY 496 (its pivot is actually in r1c9) which removes the 6 from r2c1.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Sat Jun 20, 2015 3:36 pm    Post subject: Reply with quote

I missed the locked 5s too. Nevertheless, it's fun to do a two-stepper on these puzzles.
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Sun Jun 21, 2015 6:29 pm    Post subject: a 1 stepper using a w wing Reply with quote

The W Wing in 36 boxes 1 and 2 acting on 6 in row 1 give3s a solution without sorting out the 5s in box 3!
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