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Mar 19 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Sun Mar 18, 2018 11:07 pm    Post subject: Mar 19 VH Reply with quote
Hi everyone,

Code:

+----------+-------------+----------+
| 8 3   2  | 6  49   49  | 7 5  1   |
| 9 4   6  | 7  1    5   | 3 28 28  |
| 5 7   1  | 2  8    3   | 4 6  9   |
+----------+-------------+----------+
| 7 258 3  | 45 2456 468 | 1 9  245 |
| 6 25  4  | 1  79   79  | 8 3  25  |
| 1 9   58 | 3  245  48  | 6 24 7   |
+----------+-------------+----------+
| 2 1   9  | 8  3    467 | 5 47 46  |
| 3 58  7  | 45 456  2   | 9 1  468 |
| 4 6   58 | 9  57   1   | 2 78 3   |
+----------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 4,5,8 in r4c4,r6c36 and -5 in r4c2,r6c5
or
XYZ-Wing 2,4,5 in r4c4,r6c58 and -4 in r6c6


Ciao Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Mar 19, 2018 5:06 am    Post subject: Reply with quote
Code:
┌────────────────────┬────────────────────┬────────────────────┐
│    8      3      2 │    6     49     49 │    7      5      1 │
│                    │                    │                    │
│    9      4      6 │    7      1      5 │    3     28     28 │
│                    │                    │                    │
│    5      7      1 │    2      8      3 │    4      6      9 │
├────────────────────┼────────────────────┼────────────────────┤
│    7    258      3 │   45   2456    468 │    1      9    245 │
│                    │                    │                    │
│    6     25      4 │    1     79     79 │    8      3     25 │
│                    │                    │                    │
│    1      9     58 │    3    245     48 │    6     24      7 │
├────────────────────┼────────────────────┼────────────────────┤
│    2      1      9 │    8      3    467 │    5     47     46 │
│                    │                    │                    │
│    3     58      7 │   45    456      2 │    9      1    468 │
│                    │                    │                    │
│    4      6     58 │    9     57      1 │    2     78      3 │
└────────────────────┴────────────────────┴────────────────────┘


Flightless XY-Wing (24-8) pivot r6c8, with pincer transport
Transport 8 from r6c6 to r9c3 => -8r9c8
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immpy



Joined: 06 May 2017
Posts: 571
PostPosted: Mon Mar 19, 2018 1:25 pm    Post subject: Reply with quote
....OR an XYZ-wing 2-45 pivoted @r6c5 ... r6c6<>4 (=8!).

cheers all...immp
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Mon Mar 19, 2018 10:45 pm    Post subject: Reply with quote
Hi everyone

Code:

+----------+-------------+----------+
| 8 3   2  | 6  49   49  | 7 5  1   |
| 9 4   6  | 7  1    5   | 3 28 28  |
| 5 7   1  | 2  8    3   | 4 6  9   |
+----------+-------------+----------+
| 7 258 3  | 45 2456 468 | 1 9  245 |
| 6 25  4  | 1  79   79  | 8 3  25  |
| 1 9   58 | 3  245  48  | 6 24 7   |
+----------+-------------+----------+
| 2 1   9  | 8  3    467 | 5 47 46  |
| 3 58  7  | 45 456  2   | 9 1  468 |
| 4 6   58 | 9  57   1   | 2 78 3   |
+----------+-------------+----------+

Play this puzzle online at the Daily Sudoku site

When the 2 at r2c8 is true, the 4 at r6c8 is both true and false, so 2 at r2c8 must be false:
chain1 = (2)r2c8 – 2r6c8=4r6c8
chain 2 = (2)r2c8 –8 r2c8=8r9c8-8r9c3=8r6c3-8r6c6=4r6c6-4r6c8=>-2r2c8=>stte.

Ciao a Tutti
Paolo
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