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VH101217

 
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arkietech



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

PostPosted: Wed Oct 11, 2017 10:50 pm    Post subject: VH101217 Reply with quote

Code:
 *-----------*
 |4..|819|...|
 |..1|...|...|
 |9.7|3..|6.1|
 |---+---+---|
 |.5.|...|..8|
 |...|197|...|
 |3..|...|.9.|
 |---+---+---|
 |8.6|..1|5.4|
 |...|...|7..|
 |...|526|..3|
 *-----------*


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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 542
Location: Rimini, Italy

PostPosted: Thu Oct 12, 2017 7:53 am    Post subject: Reply with quote

Hi everyone,

Code:

+------------+------------+-------------+
| 4  6    35 | 8  1   9   | 23 357  257 |
| 25 238  1  | 67 67  245 | 89 3458 59  |
| 9  28   7  | 3  45  245 | 6  458  1   |
+------------+------------+-------------+
| 17 5    9  | 2  346 34  | 14 67   8   |
| 6  4    8  | 1  9   7   | 23 35   25  |
| 3  17   2  | 46 58  58  | 14 9    67  |
+------------+------------+-------------+
| 8  39   6  | 79 37  1   | 5  2    4   |
| 25 1239 35 | 49 348 348 | 7  16   69  |
| 17 179  4  | 5  2   6   | 89 18   3   |
+------------+------------+-------------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 4,6,9 in r68c4,r8c9 and -6 in r6c9


Ciao Gianni
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AjÚ Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy

PostPosted: Thu Oct 12, 2017 1:03 pm    Post subject: Reply with quote

Hi everyone

[(5)R2C9-(5)R2C1=(5)R8C1-(5=3)R8C3 and (5-9)R2C9=(9)R8C9-(9)R8C4=(9)R7C4-(9=3)R7C2]=>contradition-two singles 3 in box 7=>- 5R2C9=>solution.

Ciao a Tutti
Paolo
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immpy



Joined: 06 May 2017
Posts: 344

PostPosted: Fri Oct 13, 2017 10:19 pm    Post subject: Reply with quote

WOW! Great puzzle.
This one took me a while, and I made several mistakes along the way...back to the drawing board. I almost threw in the towel.
I finally spotted a W-Wing (25) connected by 2. r2c9<>5(=9). stte.
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