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[ArkieTech]

Code: Select all

 *-----------*
 |6..|5..|.32|
 |.91|...|...|
 |.5.|2..|.17|
 |---+---+---|
 |...|.31|...|
 |..9|4.7|1..|
 |...|65.|...|
 |---+---+---|
 |17.|..2|.5.|
 |...|...|32.|
 |82.|..4|..1|
 *-----------*


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[Marty R.]

Code: Select all

+-----------+-----------+--------------+
| 6  48 7   | 5  1   89 | 489  3   2   |
| 2  9  1   | 7  48  3  | 4568 46  45  |
| 3  5  48  | 2  489 6  | 489  1   7   |
+-----------+-----------+--------------+
| 47 68 268 | 89 3   1  | 2457 479 459 |
| 5  3  9   | 4  2   7  | 1    8   6   |
| 47 1  28  | 6  5   89 | 247  479 3   |
+-----------+-----------+--------------+
| 1  7  3   | 89 689 2  | 46   5   49  |
| 9  46 46  | 1  7   5  | 3    2   8   |
| 8  2  5   | 3  69  4  | 67   679 1   |
+-----------+-----------+--------------+


Play this puzzle online at the Daily Sudoku site

Skyscraper on 8, c26.

(6=8)r4c2-r1c2=r1c6-(9=8)r6c6-->r4c4, r6c3<>8

Is that notation OK? I was trying to do it without including r8c2 since that cell isn't part of the pattern when viewing the grid.

[ArkieTech]

Code: Select all

+-----------+-----------+--------------+
| 6  48 7   | 5  1   89 | 489  3   2   |
| 2  9  1   | 7  48  3  | 4568 46  45  |
| 3  5  48  | 2  489 6  | 489  1   7   |
+-----------+-----------+--------------+
| 47 68 268 | 89 3   1  | 2457 479 459 |
| 5  3  9   | 4  2   7  | 1    8   6   |
| 47 1  28  | 6  5   89 | 247  479 3   |
+-----------+-----------+--------------+
| 1  7  3   | 89 689 2  | 46   5   49  |
| 9  46 46  | 1  7   5  | 3    2   8   |
| 8  2  5   | 3  69  4  | 67   679 1   |
+-----------+-----------+--------------+


Play this puzzle online at the Daily Sudoku site

Skyscraper on 8, c26.

(6=8)r4c2-r1c2=r1c6-(9=8)r6c6-->r4c4, r6c3<>8

Is that notation OK? I was trying to do it without including r8c2 since that cell isn't part of the pattern when viewing the grid.

You don't need the 6 or the 9

8r4c2=r1c2-r1c6=8r6c6 => -8r4c4,r6c3; stte