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Daily Sudoku for 14/12/2018 - Diabolical

 
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Clement



Joined: 24 Apr 2006
Posts: 974
Location: Dar es Salaam Tanzania

PostPosted: Fri Dec 14, 2018 9:12 am    Post subject: Daily Sudoku for 14/12/2018 - Diabolical Reply with quote

Code:

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

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1833
Location: Northwest Arkansas USA

PostPosted: Fri Dec 14, 2018 10:06 pm    Post subject: Reply with quote

Code:
 *--------------------------------------------------------------------*
 |a138    9      6      |a58     4      7      | 2     a18     35     |
 | 5      2348   23     | 2689   1      2689   | 37     4789   34679  |
 | 1248   1248   7      | 25689  3      25689  | 45     1489   4569   |
 *----------------------+----------------------+----------------------|
 | 6-3    5      4      |b378    26    b38     | 1      279    279    |
 | 7      36     9      | 1      26     345    | 45     24     8      |
 | 12     12     8      |b57     9      45     | 6      3      457    |
 *----------------------+----------------------+----------------------|
 | 68     678    1      | 236    5      236    | 9      247    2347   |
 | 46     467    23     | 2369   8      2369   | 37     5      1      |
 | 9      23     5      | 4      7      1      | 8      6      23     |
 *--------------------------------------------------------------------*
[(3=5)r1c148-(5=3)b5p137]-3r4c1; ste
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immpy



Joined: 06 May 2017
Posts: 234

PostPosted: Sat Dec 15, 2018 2:22 pm    Post subject: Reply with quote

SUPERB PUZZLE Clement!! And indeed diabolical; I lost count on the steps I needed. Every tool in the tool-kit was needed at some point. Kudos to arkietech for his elegant solution.
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Clement



Joined: 24 Apr 2006
Posts: 974
Location: Dar es Salaam Tanzania

PostPosted: Sat Dec 15, 2018 3:25 pm    Post subject: Daily Sudoku for 14/12/2018 - VH Reply with quote

Code:

+---------------------+-----------------------+----------------------+
|e138      9       6  | 8-5       4     7     | 2     18      f35    |
| 5        2348    23 | 2689      1     2689  | 37    4789     34679 |
| 1248     1248    7  | 25689     3     25689 | 45    1489     4569  |
+---------------------+-----------------------+----------------------+
|d36       5       4  | 678       26    38    | 1     279      279   |
| 7       c36      9  | 1        c26    345   |b45   b24       8     |
| 12       12      8  | a57       9     45    | 6     3       b47-5  |
+---------------------+-----------------------+----------------------+
| 68       678     1  | 236       5     236   | 9     247      2347  |
| 46       467     23 | 2369      8     2369  | 37    5        1     |
| 9        23      5  | 4         7     1     | 8     6        23    |
+---------------------+-----------------------+----------------------+

(5=7)r6c4 - (7=452)r5c78|r6c9 - (2=63)r5c25 - (3)r4c1 = r1c1 - (3=5)r1c9 => -5r1c4, r6c9; stte
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