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Jan 07 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1019
Location: Rimini, Italy
PostPosted: Sat Jan 06, 2018 11:33 pm    Post subject: Jan 07 VH Reply with quote
Hi everyone,

Code:

+------------+----------+---------+
| 8   39  39 | 6  4  7  | 2  5 1  |
| 7   2   1  | 5  9  8  | 6  3 4  |
| 6   5   4  | 3  2  1  | 8  9 7  |
+------------+----------+---------+
| 23  6   8  | 12 13 9  | 4  7 5  |
| 123 4   39 | 7  5  6  | 13 8 29 |
| 5   139 7  | 4  8  23 | 13 6 29 |
+------------+----------+---------+
| 13  7   6  | 9  13 4  | 5  2 8  |
| 9   18  2  | 18 6  5  | 7  4 3  |
| 4   38  5  | 28 7  23 | 9  1 6  |
+------------+----------+---------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 2,3,9 in r4c1,r5c39 and -2 in r5c1
or
XYZ-Wing 1,2,3 in r4c1,r5c17 and -3 in r5c3


Ciao Gianni
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immpy



Joined: 06 May 2017
Posts: 574
PostPosted: Sun Jan 07, 2018 4:45 am    Post subject: Reply with quote
I played a BUG+2 on (3). One of the two tri-candidate cells must contain the 3. Therefore, r4c1<>3 (=2); and r5c3<>3 (=9). stte

Cheers, immpy...
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Jan 07, 2018 6:07 am    Post subject: Reply with quote
Code:
┌─────────────────┬─────────────────┬─────────────────┐
│   8    39    39 │   6     4     7 │   2     5     1 │
│                 │                 │                 │
│   7     2     1 │   5     9     8 │   6     3     4 │
│                 │                 │                 │
│   6     5     4 │   3     2     1 │   8     9     7 │
├─────────────────┼─────────────────┼─────────────────┤
│  23     6     8 │  12    13     9 │   4     7     5 │
│                 │                 │                 │
│ 123     4    39 │   7     5     6 │  13     8    29 │
│                 │                 │                 │
│   5   139     7 │   4     8    23 │  13     6    29 │
├─────────────────┼─────────────────┼─────────────────┤
│  13     7     6 │   9    13     4 │   5     2     8 │
│                 │                 │                 │
│   9    18     2 │  18     6     5 │   7     4     3 │
│                 │                 │                 │
│   4    38     5 │  28     7    23 │   9     1     6 │
└─────────────────┴─────────────────┴─────────────────┘


Flightless XY-Wing (39-2) pivot r5c3
transport 2 from r5c9 to r6c6 via r6c9=> -2r4c4
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