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17 09 2017

 
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Mon Sep 18, 2017 2:06 pm    Post subject: 17 09 2017 Reply with quote
Hi everyone


Code:

+-------+-------+-------+
| . 1 . | 7 . . | . 8 . |
| . 2 7 | . 1 8 | . . . |
| 5 . . | . . 9 | . . . |
+-------+-------+-------+
| 9 . . | . 6 . | . . 3 |
| . 3 5 | . . . | 6 4 . |
| 8 . . | . 9 . | . . 1 |
+-------+-------+-------+
| . . . | 5 . . | . . 8 |
| . . . | 9 8 . | 4 6 . |
| . 6 . | . . 7 | . 1 . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
After basics
Code:


+--------------------------+--------------------------+--------------------------+
| 36      1       9        | 7       5       34       | 23      8       246      |
| 36      2       7        | 346     1       8        | 5       9       46       |
| 5       8       4        | 236     23      9        | 1       37      67       |
+--------------------------+--------------------------+--------------------------+
| 9       47      2        | 1       6       45       | 8       57      3        |
| 1       3       5        | 8       7       2        | 6       4       9        |
| 8       47      6        | 34      9       345      | 27      257     1        |
+--------------------------+--------------------------+--------------------------+
| 247     9       1        | 5       24      6        | 237     237     8        |
| 27      5       3        | 9       8       1        | 4       6       27       |
| 24      6       8        | 23      234     7        | 9       1       5        |
+--------------------------+--------------------------+--------------------------+


[(7)R3C8-(7=5)R4C8-(5=4)R4C6 and (7-3)R3C8=(3)R7C8-(3)R7C7=(3)R1C7-(3=4)R1C6-(4)R4C6=(4)R4C2=>contradiction two singles 4 in line 4=>-7R3C8=>stte.

Ciao a Tutti

Paolo
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Ajò Dimonios



Joined: 01 May 2017
Posts: 339
Location: Sassari Italy
PostPosted: Mon Sep 18, 2017 5:17 pm    Post subject: Reply with quote
Hi everyone

Another solution

W-Wing 7/2 in R6C7,R8C9 connected by 2 in R1C79=>-7R7C7=>stte.

Ciao a Tutti

Paolo
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RobertRattley



Joined: 24 Jun 2007
Posts: 118
Location: Australia
PostPosted: Mon Sep 18, 2017 10:06 pm    Post subject: Reply with quote
xy wing 237
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