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Daily Sudoku for 9/4/2016-Diabolical

 
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Clement



Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
PostPosted: Fri Apr 15, 2016 9:15 pm    Post subject: Daily Sudoku for 9/4/2016-Diabolical Reply with quote
Code:

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

Play this puzzle online at the Daily Sudoku site
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Sat Apr 16, 2016 8:08 am    Post subject: Reply with quote
Code:
+--------------------+-------------------+--------------+
| 8     2      19    | (13)   17(3)  6   | 579   59   4 |
| 3     49(1)  149   | 8(1)   5      178 | 279   29   6 |
| 7     6      5     | 4      2      9   | 1     8    3 |
+--------------------+-------------------+--------------+
| 149   8      13479 | 2      1379   137 | 3469  469  5 |
| 19    5      12379 | 6      1379   4   | 239   29   8 |
| 6     (49)   2349  | 58     (39)   58  | 2349  7    1 |
+--------------------+-------------------+--------------+
| 5     3      6     | 7      4      2   | 8     1    9 |
| 49-1  7      49-1  | 35(1)  8      135 | 456   456  2 |
| 2     (14)   8     | 9      6      5-1 | 45    3    7 |
+--------------------+-------------------+--------------+
Skyscraper[1r29c2, 1r28c4]=(1-3)r1c4=3r1c5-(3=9)r6c5-(9=4)r6c2-(4=1)r9c2 -> r9c2=1; stte
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Clement



Joined: 24 Apr 2006
Posts: 1113
Location: Dar es Salaam Tanzania
PostPosted: Sat Apr 16, 2016 2:26 pm    Post subject: Daily Sudoku for 9/4/2016-Diabolical Reply with quote
Considering the pair 29 in col8 and the triple 149 in BOX 4 or Col3, the grid after basics
Code:

+-------------+--------------+-----------+
| 8   2   19  | 13  137  6   | 79   5  4 |
| 3   149 149 | 18  5    178 | 279  2-9 6 |
| 7   6   5   | 4   2    9   | 1    8  3 |
+-------------+--------------+-----------+
| 149 8   37  | 2   1379 1*3*7 | 3469 46 5 |
| 19  5   237 | 6   1379 4   | 239  29 8 |
| 6   49  23  | 358 39   358 | 2349 7  1 |
+-------------+--------------+-----------+
| 5   3   6   | 7   4    2   | 8    1  9 |
| 149 7   149 | 135 8    13*5 | 456  46 2 |
| 2   14  8   | 9   6    1*5  | 45   3  7 |
+-------------+--------------+-----------+

A net
(9)r2c2 = r6c2 - (9=3)r6c5 - r4c6 = (3*)r8c6
............ǁ
.........(9-4)r6c2 = r6c7 - (4=5)r9c7 - (5=1*)r9c6 - (1*3*=7)r4c6 - r2c6 = r1c5 - (7=9)r1c7 => -9r2c8; stte
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
PostPosted: Sat Apr 16, 2016 5:05 pm    Post subject: Reply with quote
Rewriting Clement's solution :
Code:
+-----------------+-------------------+----------------+
| 8    2      1-9 | 13   13(7)  6     | (79)    5    4 |
| 3    14(9)  149 | 18   5      18(7) | 27-9    2-9  6 |
| 7    6      5   | 4    2      9     | 1       8    3 |
+-----------------+-------------------+----------------+
| 149  8      37  | 2    1379   (137) | 3469    46   5 |
| 19   5      237 | 6    1379   4     | 239     29   8 |
| 6    (49)   23  | 58   (39)   58    | 239(4)  7    1 |
+-----------------+-------------------+----------------+
| 5    3      6   | 7    4      2     | 8       1    9 |
| 49   7      149 | 135  8      135   | 456     46   2 |
| 2    14     8   | 9    6      (15)  | (45)    3    7 |
+-----------------+-------------------+----------------+
Kraken Cell (137)r4c6 -> [9r2c2==9r1c7]-9r1c1.r2c78=9r1c7; stte
||1r4c6-(1=5)r9c6-(5=4)r9c7-4r6c7=(4-9)r6c2=9r2c2
||3r4c6-(3=9)r6c5-9r6c2=9r2c2
||7r4c6-7r2c6=7r1c5-(7=9)r1c7
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bat999



Joined: 09 Jul 2015
Posts: 55
Location: UK
PostPosted: Mon Apr 18, 2016 12:24 am    Post subject: Reply with quote
Code:
.-----------------.-------------------.--------------.
| 8    2     19   | 13   137    6     |  79   5   4  |
| 3    149C  149  | 18B  5      178B  |  279   29  6 |
| 7    6     5    | 4    2      9     |  1     8   3 |
:-----------------+-------------------+--------------:
| 149  8     37   | 2    1379  a137aA |  3469  46  5 |
| 19   5     237  | 6    1379   4     |  239   29  8 |
| 6    49bC  23   | 58   39b    58    |  2349  7   1 |
:-----------------+-------------------+--------------:
| 5    3     6    | 7    4      2     |  8     1   9 |
| 49   7     149  | 135  8      135   |  456   46  2 |
| 2    1-4   8    | 9    6     b15    | b45    3   7 |
'-----------------'-------------------'--------------'
(1)r4c6 - (1=4)r9c67 - (4)r9c2
(3)r4c6 - (3=4)r6c25 - (4)r9c2
(7)r4c6 - (7=1)r2c46 - (1=4)r26c2 - (4)r9c2
=> -4 r9c2; stte
Cool
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