Logic Masters Deutschland e.V.

Sums of killer cages and sandwiches were deleted, and you only know some info about them.

Rules:

-Normal sudoku rules apply.
-Digits in a cage cannot repeat and must sum to the number in the top left corner of the cage (if given).
-Clues outside the grid give the sum of the digits between the 1 and 9 in that row/column.
-A ? means a single-digit number, and a ?? means a double digit number. Note that a single digit sum can be 0 for sandwich clues and also that ? and ?? aren't necessarily the same for all sandwich clues/killer cages.

Please note that an inequality is there to exclude a certain total from being possible for that clue.

Links:

F-puzzles
CTC