Logic Masters Deutschland e.V.

The only thing better than sandwiches is sandwiches inside of sandwiches, am I right?!

The Rules:

1. [Modified Sudoku]: Fill the grid with the numbers 1-7 and the letters R and C, such that every row, column, and box contains one each.
   • In every row, the letter R may not be between the 1 and 7.
   • In every column, the letter C may not be between the 1 and 7.
2. [Sandwich] Clues outside the grid represent the sum of the values of the cells sandwiched between the 1 and 7 in that row or column.
   • Cells containing R have a value equal to that Row's sandwich total.
   • Cells containing C have a value equal to that Column's sandwich total.
3. [Ambiguous Kropki]: Cells separated by a dot have a difference of values equal to 1 or a ratio of values equal to 2:1.

The Puzzle:

Try the puzzle using Sven's Sudokupad

For mobile users, try this version which uses the letters A for across and D for down.