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Extreme 011320

 
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immpy



Joined: 06 May 2017
Posts: 322

PostPosted: Mon Jan 13, 2020 10:15 am    Post subject: Extreme 011320 Reply with quote

Hello all, many ways to choose and solve this one.
Enjoy the puzzle....

Code:

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

Play this puzzle online at the Daily Sudoku site

cheers...immp
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Clement



Joined: 24 Apr 2006
Posts: 1027
Location: Dar es Salaam Tanzania

PostPosted: Thu Feb 27, 2020 5:37 pm    Post subject: Extreme 011320 Reply with quote

Two Steps for me
Code:

+-------------------+-------------------------+------------------------+
| 6      15     3   | 1457     2        147   | 145       8        9   |
| 8      4      129 | 6       a59       19    | b125      7        3   |
| 59     7      129 | 8        3459     1349  | 6         1245     145 |
+-------------------+-------------------------+------------------------+
| 1      3      459 | 247      6        24789 | 24579     2459     458 |
| 49     8      7   | 234      349      5     | 12349     12349    6   |
| 2      6      459 | 347      1        34789 | 34579     3459     458 |
+-------------------+-------------------------+------------------------+
| 7      2      14  | 9        34-5     6     | 8         1345     145 |
| 3      9      8   | d145     7        14    | c145      6        2   |
| 45     15     6   | 1234     8        1234  | 1349      1349     7   |
+-------------------+-------------------------+------------------------+

Step 1: (5)r2c5 = r2c7 - r8c7 = (5)r8c4 => - 5r7c5
Code:

+-------------------+-------------------------+------------------------+
| 6     b15    3    | b147     2       a147   | b145      8        9   |
| 8      4     1259 | 6        59      a19    | 125       7        3   |
| 59     7     129  | 8        3459    a1349  | 6         1245     145 |
+-------------------+-------------------------+------------------------+
| 1      3     459  | 247      6        24789 | 24579     2459     458 |
| 49     8     7    | 234      349      5     | 12349     12349    6   |
| 2      6     459  | 347      1        34789 | 34579     3459     458 |
+-------------------+-------------------------+------------------------+
| 7      2     145  | 9        34       6     | 8         1345     145 |
| 3      9     8    | 5        7       d4-1   | c14       6        2   |
| 45     15    6    | 1234     8        1234  | 1349      1349     7   |
+-------------------+-------------------------+------------------------+

Step 2: (1)r123c6 = (154)r1c247 - (4)r8c7 = (4)r8c6 => - 1r8c6; btte
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