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VH090717

 
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Thu Sep 07, 2017 5:28 am    Post subject: VH090717 Reply with quote
Code:
 *-----------*
 |..8|7.3|.5.|
 |...|.5.|.4.|
 |.4.|6.9|..7|
 |---+---+---|
 |.59|...|.7.|
 |..4|9.5|8..|
 |.2.|...|93.|
 |---+---+---|
 |4..|3.1|.2.|
 |.9.|.6.|...|
 |.6.|2.7|5..|
 *-----------*


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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
PostPosted: Thu Sep 07, 2017 8:50 am    Post subject: Reply with quote
Hi everyone,

Code:

+-----------+------------+----------+
| 26   1 8  | 7  4   3   | 26  5 9  |
| 9    7 26 | 18 5   28  | 126 4 3  |
| 5    4 3  | 6  12  9   | 12  8 7  |
+-----------+------------+----------+
| 168  5 9  | 18 3   268 | 4   7 12 |
| 17   3 4  | 9  127 5   | 8   6 12 |
| 1678 2 67 | 4  17  68  | 9   3 5  |
+-----------+------------+----------+
| 4    8 5  | 3  9   1   | 7   2 6  |
| 27   9 27 | 5  6   4   | 3   1 8  |
| 3    6 1  | 2  8   7   | 5   9 4  |
+-----------+------------+----------+

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Quote:
XY-Wing 2,6,8 in r2c36,r6c6 and -6 in r6c3


Ciao Gianni
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Thu Sep 07, 2017 1:50 pm    Post subject: Reply with quote
Hi everyone

[(2)R1C7-(2)R23C7=(2)R3C5-(2=8)R2C6 and (2)R1C7-(2=6)R1C1-(6)R46C1=(6)R8C3-(6=8)R6C6]=>contradiction two singles 8 in column 6=>-2R1C7=>stte
or
AIC (2)R8C3=(2)R8C1-(2)R1C1=(2)R2C3-(2)R2C6=(2-6)R4C6=(6)R4C1-(6)R1C1=(6)R1C7-(6)R2C7=(6-2)R2C3=>-2R2C3=>stte

R1C7=2 and R2C3=2 are in any case biunivoca.

Ciao a Tutti
Paolo
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Sep 07, 2017 3:41 pm    Post subject: Reply with quote
Code:

+-----------+------------+----------+
| 26   1 8  | 7  4   3   | 26  5 9  |
| 9    7 26 | 18 5   28  | 126 4 3  |
| 5    4 3  | 6  12  9   | 12  8 7  |
+-----------+------------+----------+
| 168  5 9  | 18 3   268 | 4   7 12 |
| 17   3 4  | 9  127 5   | 8   6 12 |
| 1678 2 67 | 4  17  68  | 9   3 5  |
+-----------+------------+----------+
| 4    8 5  | 3  9   1   | 7   2 6  |
| 27   9 27 | 5  6   4   | 3   1 8  |
| 3    6 1  | 2  8   7   | 5   9 4  |
+-----------+------------+----------+

Play this puzzle online at the Daily Sudoku site

XY-Wing (17-2) pivot r5c1 with both pincers transported
Transport from r8c1 to r2c3; from r5c9 to r4c6=> -2r2c6
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