Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Image alternate text: single sentence per line #2179

Merged
merged 1 commit into from
Jun 10, 2024
Merged

Image alternate text: single sentence per line #2179

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
28 changes: 25 additions & 3 deletions exercises/killer-sudoku-helper/description.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,17 @@ In a 3-digit cage with a sum of 7, there is only one valid combination: 124.
- 1 + 2 + 4 = 7
- Any other combination that adds up to 7, e.g. 232, would violate the rule of not repeating digits within a cage.

![Sudoku grid, with three killer cages that are marked as grouped together. The first killer cage is in the 3×3 box in the top left corner of the grid. The middle column of that box forms the cage, with the followings cells from top to bottom: first cell contains a 1 and a pencil mark of 7, indicating a cage sum of 7, second cell contains a 2, third cell contains a 5. The numbers are highlighted in red to indicate a mistake. The second killer cage is in the central 3×3 box of the grid. The middle column of that box forms the cage, with the followings cells from top to bottom: first cell contains a 1 and a pencil mark of 7, indicating a cage sum of 7, second cell contains a 2, third cell contains a 4. None of the numbers in this cage are highlighted and therefore don't contain any mistakes. The third killer cage follows the outside corner of the central 3×3 box of the grid. It is made up of the following three cells: the top left cell of the cage contains a 2, highlighted in red, and a cage sum of 7. The top right cell of the cage contains a 3. The bottom right cell of the cage contains a 2, highlighted in red. All other cells are empty.][one-solution-img]
![Sudoku grid, with three killer cages that are marked as grouped together.
The first killer cage is in the 3×3 box in the top left corner of the grid.
The middle column of that box forms the cage, with the followings cells from top to bottom: first cell contains a 1 and a pencil mark of 7, indicating a cage sum of 7, second cell contains a 2, third cell contains a 5.
The numbers are highlighted in red to indicate a mistake.
The second killer cage is in the central 3×3 box of the grid.
The middle column of that box forms the cage, with the followings cells from top to bottom: first cell contains a 1 and a pencil mark of 7, indicating a cage sum of 7, second cell contains a 2, third cell contains a 4.
None of the numbers in this cage are highlighted and therefore don't contain any mistakes.
The third killer cage follows the outside corner of the central 3×3 box of the grid.
It is made up of the following three cells: the top left cell of the cage contains a 2, highlighted in red, and a cage sum of 7.
The top right cell of the cage contains a 3.
The bottom right cell of the cage contains a 2, highlighted in red. All other cells are empty.][one-solution-img]

## Example 2: Cage with several combinations

Expand All @@ -31,7 +41,13 @@ In a 2-digit cage with a sum 10, there are 4 possible combinations:
- 37
- 46

![Sudoku grid, all squares empty except for the middle column, column 5, which has 8 rows filled. Each continguous two rows form a killer cage and are marked as grouped together. From top to bottom: first group is a cell with value 1 and a pencil mark indicating a cage sum of 10, cell with value 9. Second group is a cell with value 2 and a pencil mark of 10, cell with value 8. Third group is a cell with value 3 and a pencil mark of 10, cell with value 7. Fourth group is a cell with value 4 and a pencil mark of 10, cell with value 6. The last cell in the column is empty.][four-solutions-img]
![Sudoku grid, all squares empty except for the middle column, column 5, which has 8 rows filled.
Each continguous two rows form a killer cage and are marked as grouped together.
From top to bottom: first group is a cell with value 1 and a pencil mark indicating a cage sum of 10, cell with value 9.
Second group is a cell with value 2 and a pencil mark of 10, cell with value 8.
Third group is a cell with value 3 and a pencil mark of 10, cell with value 7.
Fourth group is a cell with value 4 and a pencil mark of 10, cell with value 6.
The last cell in the column is empty.][four-solutions-img]

## Example 3: Cage with several combinations that is restricted

Expand All @@ -42,7 +58,13 @@ In a 2-digit cage with a sum 10, where the column already contains a 1 and a 4,

19 and 46 are not possible due to the 1 and 4 in the column according to standard Sudoku rules.

![Sudoku grid, all squares empty except for the middle column, column 5, which has 8 rows filled. The first row contains a 4, the second is empty, and the third contains a 1. The 1 is highlighted in red to indicate a mistake. The last 6 rows in the column form killer cages of two cells each. From top to bottom: first group is a cell with value 2 and a pencil mark indicating a cage sum of 10, cell with value 8. Second group is a cell with value 3 and a pencil mark of 10, cell with value 7. Third group is a cell with value 1, highlighted in red, and a pencil mark of 10, cell with value 9.][not-possible-img]
![Sudoku grid, all squares empty except for the middle column, column 5, which has 8 rows filled.
The first row contains a 4, the second is empty, and the third contains a 1.
The 1 is highlighted in red to indicate a mistake.
The last 6 rows in the column form killer cages of two cells each.
From top to bottom: first group is a cell with value 2 and a pencil mark indicating a cage sum of 10, cell with value 8.
Second group is a cell with value 3 and a pencil mark of 10, cell with value 7.
Third group is a cell with value 1, highlighted in red, and a pencil mark of 10, cell with value 9.][not-possible-img]

## Trying it yourself

Expand Down