txt: ## dist_zef-coke-App-SudokuHelper.md
  # NAME
  
  sudoku - command-line sudoku utility
  
  # DESCRIPTION
  
  ```
  $ sudoku combo 6
  6
  1 5
  2 4
  1 2 3
  
  ```
  
  Display all combinations of sudoku digits that add to the given sum. Solutions
  displayed in order from shortest to longest, then in numerical order.
  
  ```
  $ sudoku combo 30 4
  6 7 8 9
  
  ```
  
  Display combinations that add to the given sum using the specified number of digits.
  
  ```
  $ sudoku combo -s 6
  6
  2 4
  
  $ sudoku combo --sandwich 9
  2 7
  3 6
  4 5
  2 3 4
  
  ```
  
  Display combinations that add to the given sum that are valid for sandwich suduko.
  That is, that exclude the digits 1 and 9.
  
  ```
  $ sudoku combo -x 10
  2 8
  3 1 6
  3 2 5
  4 1 2 3
  
  ```
  
  Display combinations where the number of digits in the combination is one of the
  digits. `-x` for x-sums variant, where the number outside the puzzle shows the
  total of the first `x` digits, where `x` is the first digit. The first digit of
  each row is the `x`.
  
  ```
  $ sudoku combo --sequence 13
  6 7
  
  ```
  
  Display only combinations where the digits form a sequence.
  