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Jan 05 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
PostPosted: Thu Jan 04, 2018 11:15 pm    Post subject: Jan 05 VH Reply with quote
Hi everyone,

Code:

+----------+----------+-----------+
| 7  49 56 | 3  16 29 | 14 8   25 |
| 3  49 8  | 5  17 29 | 6  14  27 |
| 2  1  56 | 67 4  8  | 57 3   9  |
+----------+----------+-----------+
| 9  7  4  | 8  5  6  | 3  2   1  |
| 5  3  2  | 1  9  7  | 8  6   4  |
| 8  6  1  | 2  3  4  | 57 9   57 |
+----------+----------+-----------+
| 1  8  7  | 4  2  3  | 9  5   6  |
| 46 2  9  | 67 8  5  | 14 147 3  |
| 46 5  3  | 9  67 1  | 2  47  8  |
+----------+----------+-----------+

Play this puzzle online at the Daily Sudoku site

Quote:
BUG+1 and r8c8=4
or
XY-Wing 1,4,7 in r2c58,r9c8 and -7 in r9c5


Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Fri Jan 05, 2018 6:06 am    Post subject: Reply with quote
Code:
┌─────────────────┬─────────────────┬─────────────────┐
│   7    49    56 │   3    16    29 │  14     8    25 │
│                 │                 │                 │
│   3    49     8 │   5    17    29 │   6    14    27 │
│                 │                 │                 │
│   2     1    56 │  67     4     8 │  57     3     9 │
├─────────────────┼─────────────────┼─────────────────┤
│   9     7     4 │   8     5     6 │   3     2     1 │
│                 │                 │                 │
│   5     3     2 │   1     9     7 │   8     6     4 │
│                 │                 │                 │
│   8     6     1 │   2     3     4 │  57     9    57 │
├─────────────────┼─────────────────┼─────────────────┤
│   1     8     7 │   4     2     3 │   9     5     6 │
│                 │                 │                 │
│  46     2     9 │  67     8     5 │  14   147     3 │
│                 │                 │                 │
│  46     5     3 │   9    67     1 │   2    47     8 │
└─────────────────┴─────────────────┴─────────────────┘


Kite(4) hinged b9

4r9c1=r1c7
4r9c1 - (4=6)r8c1-(6=7)r8c4-r3c4==r3c7-r6c7=r6c9
4r1c7-(4=295)r1c269-(5=7)r6c9=> 7r6c9
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
PostPosted: Fri Jan 05, 2018 3:55 pm    Post subject: Jan 5 VH Reply with quote
Chain: R9C5,R9C8,R2C8,R2C5,R3C4: -6R8C4

Early Earl
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Sat Jan 06, 2018 2:29 pm    Post subject: Reply with quote
Another XY-Wing solves it.....

14 (-7) pivoted @r2c8...r9c5<>7 (=6)! stte

Cheers....

immpy
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